Race in America since the 1960s Essay Example for Free

Race in America since the 1960s Essay America has come a long way since the dark days when slavery marred the continent. The journey to equality was not always a smooth one, and only in the last half-century have African-Americans been granted their complete rights and freedoms. Now that they have these equal rights, they are taking their place to take advantage of their equal opportunities, but there still seems to be a glass ceiling preventing their further progress. White Americans still cite racial progress in many areas, while the reality remains that much of this progress is illusion. With the election of Barack Obama as the President of the United States, it seems safe to say that racial relations in the country have certainly improved in the past fifty years. In the 1950s, many African-Americans could not even vote in many parts of the country, with racist leaders and citizens doing everything in their power to deny this most basic of rights. Once desegregation took effect and was enforced by the federal government, it seemed that African-Americans had finally achieved equality. However, this was largely a myth based on the horrible conditions they once faced, and the current conditions still often view them as a marginalized race. Couple this with the massive influx of Latin Americans into the U. S. , and race relations are just as explosive as they were in the 1960s. One program designed to aid racial equality is affirmative action, which has been both a blessing and a curse for minorities. Originally conceived as a means to redress discrimination, affirmative action has created racial preferences that have instead promoted discrimination. And rather than fostering harmony and integration, these preferences have divided many businesses and college campuses across the country. In no other area of public life is there a greater disparity between the rhetoric of preferences and the reality than with affirmative action. Many have cited lesser qualified applicants hired or accepted to colleges based on race, not qualifications or need. If preferences were truly meant to remedy disadvantage, they would be given on the basis of disadvantage, not on the basis of race, so that a poor, qualified white student would stand a better chance of being admitted than the under-qualified son of a black doctor. This illustrates a problem with the idealism of affirmative action and how remedying some racial issues have merely created unfairness in other areas. Instead of a remedy for disadvantage, many supporters now claim that preferences promote diversity. This same push for diversity also has led colleges like Stanford University to create racially segregated dormitories, racially segregated freshman orientation programs, racially segregated graduation ceremonies and curricular requirements in race theory and gender studies (Sacks Thiel, 1996). But if diversity was really the goal, then preferences would be given on the basis of unusual characteristics, not on the basis of race. The underlying assumption—that only minorities can add certain ideas or perspectives—is offensive not merely because it is untrue but also because it implies that all minorities think a certain way. While affirmative action is a noble effort, it is perhaps antiquated. Today, while African-Americans enjoy greater freedom and equality, Latinos have come to represent the current racial crisis. Many conservative Americans demand that they learn English, adopt American culture, and assimilate or leave. Additionally, Middle Eastern Americans are finding life equally difficult and face often violent retributions for crimes that they did not commit. This xenophobic behavior may be largely from the scares encouraged by global terrorism, but may also be representative of the fact that not much has really changed except the language used to discuss race. The only way to truly understand the state of race in America and make a balanced assessment is to measure the equality of each race. The sad state is that many of the minorities in America are still marginalized, make less money, and have far less influence politically than the dominant white culture. Progressive and liberal legislation may continue to chip away at long held racial prejudices, but Americans cannot achieve complete equality unless it is an endeavor equally valued by all. Unfortunately, as history has shown, those in power will be reticent to relinquish that power, and those in power in America are still largely male, largely white, and largely though subtly fearful of difference. With a president with parent that are black and white, much of the racial future of America rests with a man that represents better than anyone the progress made in the past fifty years, as well as the distance left to travel until true racial harmony is achieved.

Using Thin Layer Chromatography To Monitor Reactions Environmental Sciences Essay

Using Thin Layer Chromatography To Monitor Reactions Environmental Sciences Essay Thin layer chromatography (TLC) is a very useful technique for monitoring reactions. It can also be used to determine the proper solvent system for performing separations using column chromatography. TLC stationary phases are usually alumina or silica. They are polar for standard experiments or non-polar for reverse phase chromatography. The mobile phase is a solvent whose polarity is chosen by the person conducting the experiment. In most laboratory work standard phase silica plates are used. Different compounds will travel different distances up the plate depending on the polarity of the components of the mixture. The more polar compounds will be more attracted to the polar silica gel and travel shorter distances on the plate. Mon-polar substances will spend more time in the mobile phase and as a result will travel larger distances on the plate. The measure of the distance a compound travels is called the retention factor (Rf ) value. The retention factor, or Rf, is defined as the distance traveled by the compound divided by the distance traveled by the solvent. For example, if a compound travels 2.1 cm and the solvent front travels 2.8 cm, the Rf is 0.75: The Rf for a compound is a constant from one experiment to the next only if the chromatography conditions below are also constant: solvent system adsorbent thickness of the adsorbent amount of material spotted temperature Since these factors are difficult to keep constant from experiment to experiment, relative Rf values are generally considered. Relative Rf means that the values are reported relative to a standard, or it means that you compare the Rf values of compounds run on the same plate at the same time. 1.1 Thin Layer Chromatography There have been a numbered of important milestones in the evolution of chromatography in the last 100 years. Each of these milestones has signalled the start of an important branch of chromatography. Some examples of these are; partition chromatography (1941), gas chromatography (1951-1952), high performance liquid chromatography (mid- 1960s), capillary electrophoresis (1980) and capillary electrochromatography (past decade). In all the chromatographic techniques mentioned, separation is carried out in a column. However, it is also possible to carry out separations on a planar surface. Two examples of this are paper chromatography (1944) and thin-layer chromatography (1937-1938). Thin-layer chromatography (TLC) replaced paper chromatography as the most popular, routine chromatographic technique. TLC was first used in 1937 to 1938 by Nikolai A. Izmailov and Maria S. Shraiber at the Institute of Experimental Pharmacy of the State University of Kharkov. At the time Izmailov was the head of the institute and Shraiber was his graduate student. They were searching for a method for the rapid analysis of galenic pharmaceutical preparations (plant extracts). As classical column chromatography would have taken too much time they felt that if the absorbent would be prepared in the form of a thin-layer on a glass plate. They believed that it would behave like a column but the characterization time would be much shorter. They coated microscope slides with a suspension of various adsorbents (calcium, magnesium and aluminium oxides). They deposited one drop of the sample solution on this layer and added one drop of the same solvent used in a column to develop separation. The test was a success as the separated sample components appeared as concentric rings that fluoresced in various colour s under a UV lamp. They showed that the sequence of the concentric multicoloured rings on the plate would have been identical to the sequence of coloured rings obtained on a normal chromatographic column. They called this technique spot chromatography and the result on the microscope slides ultrachromatograms. The paper on this experiment was published in a Russian pharmaceutical journal that was practically unknown outside the then Soviet Union. Its abstract was included in a Russian review journal and through it in chemical Abstracts. It was then read by M. OL. Crowe of the New York State Department of Health. He then adapted the technique for his own use. Crowe prepared the adsorbent layer in a Petri dish, added a drop of the sample solution in the centre and then added the developing solvent dropwise until sufficient separation was obtained. In 1947 T.I. Williams described a further improvement of the method of Izmailov and Shraiber in his textbook on chromatography. He prepared the adsorbent-coated glass plates in the form of a sandwich. The adsorbent layer was covered by 2 glass plates and had a small hole which the sample drops could be applied through. Meinhard and Hall made the next major step in the development of TLC at the University of Wisconsin. They used corn starch, which acted as a binder, to hold the coating on the glass plate and added a small amount of Celite powder to the adsorbent particles to improve the consistency of the layer. They called this surface chromatography. They used it to separate inorganic ions. Modern TLC started 50 years ago with the work Department of Agriculture Fruit and Vegetable laboratory in Southern California. He investigated the flavour components of the juices of citrus fruits. However, he stated that very large volumes had to be processed because the amount of flavour material was extremely small. Another problem was in finding an analytical method for the investigation of the juice concentrate composition. He followed the method of Meinhard and Hall that he read in Chemical Abstracts. However, instead of adding just a drop of the developing solvent he developed the plates as in paper chromatography. The plates were developed in a closed chamber and one side was dipped into the solvent. The solvent then ascended through the plate by capillary action. It carried with it the sample components and they were separated as a result. The experiments carried out were published and are considered the start of modern TLC. Egon Stahl was responsible for TLC becoming a universally accepted technique. He was also the first to use the term thin-layer chromatography to characterize the technique. This choice of name was almost immediately accepted. Stahl investigated various essential oils and obtained good results using adsorbent-coated glass plates. However, neither the method nor the adsorbent to be used had been optimized. Also, the adsorbents had to be modified and treated before they could be used for the coating of plates. Stahl started investigating the operational parameters and the adsorbent preparations. In the spring of 1958 his efforts were fulfilled as the necessary basic instrumentation, made by Desaga and silica gel G according to Stahl for TLC, made by E. Merck were both introduced at the international Achema exhibition of chemical equipment in Frankfurt. Stahl also published an article outlining the use of the system and a wide range of applications. Because of this standardized method TLC became a widely used laboratory technique. He also went on to publish a TLC handbook in 1962. Although TLC had a wide application it was still thought to be a qualitative technique for the analysis of simple mixtures. As a result advances were directed toward improving the technique. Instrumentation which permitted more precise spotting of the sample onto the plates and the quantitative evaluation of the separated spots was developed. Faster analysis and higher separation power was also achieved. As a result of the higher performance ability the name was change to high-performance TLC (HPTLC) by R.E. Kaiser, who was instrumental in its development. The particle size and range of the adsorbent was the main difference between TLC and HPTLC. The silica gel for TLC had broad particle sizes of 10-60 µm with an average of 20 µm whereas HPTLC has an average of only 5 µm. the HPTLC plates were also smaller in comparison with TLC plates, 10 x 10cm and 20 x 20cm respectively. The improved method and design allowed reduction in the diameter of the starting spots. These improvements lowered the analysis time and increased the efficiency. Problems arose with flow rate which Kaiser overcame by applying pressure to the TLC plate. This in turn led to forced-flow TLC. Due to the constant condensation-evaporation process associated with developing TLC plates in developing chambers problems can be encountered because of the changing velocity of the mobile phase. To overcome this forced-flow TLC (FFTLC) was developed by Tyihà ¡k, Mincsovics and Kalà ¡sz. In this method the spotted plates (dry) are placed into a pressurized development chamber. The stationary-phase layer is tightly covered and sealed on its side by an elastic membrane and pressurized by an inert gas or water filling up the cushion above the layer. The mobile phase is delivered via a pump at a constant velocity through a slit in the membrane to the stationary phase. There are various configurations which can be handled using this method. TLC is a very simple technique. As a result very little instrumentation is needed. Application of samples to the stationary-phase is carried out using a micropipette or syringe. The developing chambers are simple glass structures. Detection is carried out by visual inspection or made visible by spraying the plate with reagent. Also, a wide variety of precoated plates are available so coating equipment isnt needed. In more advanced systems the samples may be spotted by automated loading devices (dosimeters). This allows the application of small and uniform sample spots. More sophisticated developing chambers are also available (FFTLC). The plates can be scanned by densitometers and quantitatively analysed using absorbance or fluorescence measurements. Chromatograms with peaks of the individual separated spots recorded against the length of the plate are produced with such analyses. Their area is also a proportion to the amount present. More complex systems can also be created by combining TLC systems with other systems such as mass spectrometry and Fourier transform infrared. 1.2 Ink Analysis Ink analysis is a very important forensic procedure. It can reveal useful information about questioned document. Modern inks contain many substances which are aimed at improving the ink. The most important component of the ink is the colouring material. It comes in the form of a dye, pigment or a combination of both. Dyes are soluble in the liquid body of the ink, also known as the vehicle. Pigments are finely ground multi-molecular granules that are insoluble in the vehicle. The vehicles composition affects the flowing and drying characteristics of the ink and can consist of oils, solvents and resins. 1.3 Chromatography Studies Djozan et al developed a new and fast method for the differentiation of inks on a questioned document. They designed specific image analysis software for evaluating thin layer chromatograms. They sampled forty-one blue ballpoint pens which were purchased from their local markets in Iran (Table 1). They first wrote a circle of diameter 5 mm uniformly by pen on a paper. One fourth of this was then punched out for extraction. They carried out extraction in 1 ml glass tubes and added 0.1 ml of methanol. This was then vigorously shaken for 1 min. the ink component was then fully dissolved in methanol. The supernatant methanoic solutions were then used to spot the TLC plates. A blank sample of paper with equal dimensions was also treated in the same way. Table 1. List of blue ballpoint pens studied List of blue ballpoint pens studied 1 Cello pyramid 0.7 mm fine TC ball 2 OBA 3 AIHAO 4 Bic 01 5 Cenator 6 PARKER 7 A.T.CROSS FINE 8 Pelikan STICK 918 9 Marvy SB-10 1.0 mm 10 Bic 02 11 PIANO crystal 12 My pen 2001 PENS High Quality Bluce CE 13 AIBA 14 STAEDTLER Stick 430M A IRAN 15 Reynolds Medium 048 France 16 EIFEL Elegance 17 CASPIAN STICK 2001 M 18 STABILO liner 308 19 FABER-CASTELL 1.0 mm Medium (transparent) 20 BIC 08 21 Bocheng A-100 22 SCHNEIDER TOPS 505 M Germany 23 FIBER-CASTELL 1.0 mm Medium 24 MILAN PI 1 mm 25 Reform 26 PAPER = MATE FLEXGRIP ultra MED 27 PARKER UK 28 CANDID-DINI 2853 29 STABILO-galaxy 818 M 30 No name 31 No name 32 Zebra Rubber 101 33 SANFORD SAGA 34 Bensia 35 Girls 36 EUROPEN 37 PARS swiss Refill 606 38 STAEDTLER stick 430 M TBRITAIN 39 Lus HF 500 40 No name 41 STABILO bill 508 TLC analysis was carried out on Merck (Darmstadt, Germany) 20 cm x 20 cm silica gel 60 TLC plates without fluorescent indicator. The plates were activated at 60  °C for 20 min and immediately spotted after cooling in a desiccator. The plates were developed in a developing chamber. The mobile phase used was: ethyl acetate/ absolute ethanol/ distilled water (70:35:30, v/v/v). Chromatographic development of the plates was carried out at room temperature for 40 min. All mobile phases were prepared daily with analytical grade chemicals. Enough was prepared to supply the tank for each run. The plates were air-dried after development. The separated compounds were visible on the plate by their natural colour and the plates were scanned into a computer using an office scanner. An IBM compatible PC (Pentium IV) with a 2.6 GHz microprocessor, 256 MB random access memory (RAM) and a hard disk with 40 GB capacity for external storage was used for processing the colour images. The computer was equipped with an on-board graphic card (NviDiA Geforce 7300LE) and a scanner (CanoScan 4200F) was connected to the computer for scanning (300 dpi) TLC plates as digital images. The images were saved as bmp files. Matlab (Version 6.5, The Math Works, Inc.) was used to write a new program to process the previously saved images. Previous studies indicated that Pyridine is the solvent used with ballpoint pen inks. Djozan et al preformed extraction with different solvents using various extraction modes. These modes were immersion of paper into solvent and simple agitation for 1 min, ultra-sound assisted extraction and micro-wave assistance extraction. The results showed that the immersion of paper into methanol or pyridine and simple agitation resulted in complete extraction of the inks from paper (Table 2). Table 2. List of solvents used for extraction of ink components from paper Solvent Solubility of ink colours Ethyl acetate Ethanol Acetic acid Acetone Butanol 1,2-Dichloroethane Butyl acetate Tetrachloroethane Acetyl acetate Cyclohexane Methanol Pyridine Slightly Slightly Slightly Slightly Slightly Slightly Slightly Slightly Slightly Slightly Soluble Soluble No improvement was found using ultra-sound or micro-wave assisted extraction. Methanol was chosen as the extraction solvent due to the safety of the solvent. The selection of the plate was down to the fact that silica gel plates provided the best resolution of dye spots. They selected five mobile phases (Table 3) and found that ethyl acetate/ absolute ethanol/ distilled water (70:35:30, v/v/v) was effective in separating nearly all the dye mixtures. The spot capacity obtained was more than 15. Table 3. Different solvent systems used to develop plate Solvent System Ratio Spot capacity Butanol:ethanol:H2O Ethyl acetate:cyclohexane:methanol:NH3 Ethyl acetate:Butanol:NH3 Ethyl acetate:ethanol:H2O Toluene:acetone:ethanol:NH3 50:15:10 70:15:10:5 60:35:5 70:35:30 30:60:7:2 9 5 10 15 5 Fig. 1. Typical TLC results of 10 different ink samples (Djozan et al, 2008) Fig. 1. shows a typical chromatogram that they achieved in their experiment. To confirm complete separation of all components in the studied sample, two-dimensional (2D) TLC was carried out using various solvent systems. The results proved that the one-dimensional (1D) TLC is able to provide sufficient separation. The first stage carried out was colour image normalization. A function of the input images was computed that is invariant to confounding scene properties but was discriminative with respect to desired scene information. The calculation is as follows: Stage 2 is to compute a colour image profile. The intensity profile of an image is the set intensity values taken from regularly spaced points along a line segment in an image the intensity values are interpolated for points that dont fall on the centre pixel they computed an intensity profile for r, g and b images along the line passing through the centre of the image on the chromatographic development straight of each ink spot. Fig. 2. RGB characteristic of an ink after TLC (Djozan et al, 2008) In stage 3 the colour image profiles were correlated. The intensity profiles were considered as sequences and the normalized cross-correlation of sequences were computed. Cross-correlation is a measure of similarity of two signals. It is used to find features in an unknown signal and compared to a known signal. It is calculated as follows for discrete functions: Eq. (1) For image-processing applications in which the brightness of the images can be due to lighting and exposure conditions, the images can be first normalized. It is calculated as follows: Eq. (2) Stage 4 involved computing image similarity. The weighted mean of and were computed as follows: Eq. (3) The ability of the method to differentiate between various blue ballpoint pens was evaluated by comparing the similarity of different inks according to Eq. (3). Fig. 3. Screen shot of Matlab software running (Djozan et al, 2008) Fig. 4. All possible combination of comparing inks with TLC-IA (Djozan et al, 2008) In 2006 Liu et al published a paper on the classification of black gel pen inks by ion-pairing high-performance liquid chromatography. They stated that black gel inks usually contain several dye components. These components all have different colours and are mixed together proportionally to give the black colour. They used reverse-phase ion-pairing high performance chromatography (RP-IP-HPLC). It was done in such a manner as the dyes couldnt be reversed on the C18 column due to their high polarities. The maximum UV absorption bands of the black gel pen inks obtained were between 500 and 700 nm. The wavelength of the detector was set to 580 nm as most of the dyes had a maximum UV adsorption near 580 nm. They investigated the influence of both volatile and non-volatile ion-pairing reagents on the HPLC analysis of black gel pen ink dyes. All the reagents had different alkyl chain, ammonium acetate, triethylamine (TEA), tributylamine (TBA), dihexylamine (DHA) and tetrabutylammonium bromide (TBABr). The results revealed that the dyes were nearly not retained using ammonium acetate or TEA as the ion-pairing reagent. Using TBABr, TBA and DHA as the ion-pairing reagent, individually, the dyes were separated. TBABr was selected as the ion-pairing reagent as the retention times were shorter than the others and sharper peaks were obtained. They also investigated the buffer solution concentrations and the effect of pH on the separation. The optimum result was: 40 mmol/L TBABr buffer solution (pH 7) with acetonitrile as the organic modifier for IP-HPLC analysis and an identical proportion of the buffer and acetonitrile (v/v = 40:60) at a flow rate of 1.0 mL/min. these optimum conditions were used to separate 50 dye-based black gel pen inks by IP-HPLC. Liu et al carried out another study on ion-pairing HPLC in 2006. This time, however, they studied the degradation of blue gel pen dyes and also used electrospray tandem mass spectrometry. They used ion-pairing reversed phase liquid chromatography as the inorganic compounds they were analysing have weak retention on the ordinary reversed stationary phases when separating on HPLC. This is due to their high polarities. The UV detector was set at 580 nm for the analysis as most dyes have a normal maximum absorption near 580 nm. The UV absorptions of the fluorescence whitening reagents in paper are usually below 500 nm and they had no interference for the detection of the gel pen dyes at 580 nm. Fig. 5. Chromatograms of blue gel pen inks using different ion pairing reagents (Liu et al, 2006) The tested various mobile phases: eluent A: eluent B (acetonitrile) = 50:50 (v/v); eluent A was the buffer of ion pairing reagent with concentration of 40 mmol Là ¢Ã‹â€ Ã¢â‚¬â„¢1 (pH 7.0), and the ion pairing reagent was (a) ammonium acetate, (b) TEA acetate, (d) TBA acetate, (e) DHA acetate and (f) TBABr, respectively. (c) Ammonium carbonate as eluent A (40 mmol Là ¢Ã‹â€ Ã¢â‚¬â„¢1, pH 9.5) and eluent A:eluent B (acetonitrile) = 50:50 (v/v). they found that 10 mmol-1 TBA acetate (pH 7.0) was suitable ion-pairing agent for the purpose and ink samples stored in different conditions were analyzed by IP-HPLC. Significant changes of ink composition were observed. The noticed that the natural aged inks had the similar but weaker degradation trend than the light aged inks. They used HPLC-MS/MS with ammonium carbonate as ion-pairing reagent to obtain the information of the light aged inks and their photodegradation mechanism. In 1994, Varshney et al analysed ink from typed script of electronic typewriters by HPTLC. They used script from seven electronic typewriters. They used the resultant Rf values and in-situ visible spectra of each resolved band of all the chromatograms indicated that the same chemical composition is being used in six typewriter ribbon inks. However, the seventh one is completely different. Fig. 6. Wavelength maxima values of in-situ visible spectrum bands of electronic typewriter scripts (Varshney et al, 1994) Fig. 6. shows the densitograms obtained after scanning and integration of the chromatograms of tracks of individual typewriters and blank paper. The seven electronic typewriter inks could be categorised into two groups after analysis. The first group resolved the sample to four bands including the base. The second group did not resolve the samples at all with the solvent systems used. Several varieties of blue ballpoint pen inks were analysed by HPLC and IR spectroscopy by Kher et al in 2006. The chromatographic data extracted at four wavelengths (254, 279, 370 and 400 nm) was analyzed individually and at a combination of these wavelengths by the soft independent modeling of class analogies (SIMCA) technique. They used principal components analysis (PCA) to estimate the separation between the pen samples. Linear discriminant analysis (LDA) measured the probability with which an observation could be assigned to a pen class. The best resolution was obtained by HPLC using data from all four wavelengths together, differentiating 96.4% pen pairs successfully using PCA and 97.9% pen samples by LDA. PCA separated 60.7% of the pen pairs and LDA provided a correct classification of 62.5% of the pens analyzed by IR. They stated that HPLC coupled with chemometrics provided a better discrimination of ballpoint pen inks compared to IR. Kher et al effectively combined LDA and PCA to classify the HPLC and IR data. PCA gives a general idea of how different a given pair of pens is, whereas LDA can quantify the predictive ability of a generated classification model. The two techniques of PCA and LDA were shown to be complimentary to each other. The PCA and LDA results indicated that although IR cannot differentiate between all classes of pen inks, it can still provide a reasonable discrimination, which can be enhanced further by improving the quality of the spectra. The analysis of such an enhanced IR data with chemometric analyses would provide a valuable non-destructive tool for forensic analyses. Raman Spectroscopy Studies Mazzella and Buzini used Raman spectroscopy to analyse blue gel pen inks in 2004. They sampled 55 blue gel pens. They first separated them into two groups using a preliminary solubility test in methanol. They discovered that 36 were pigmented inks, which arent soluble in methanol, and 19 were dye-based inks, which are soluble in methanol. They applied Raman spectroscopy to the 36 pigmented blue gel inks. Raman spectroscopy is a non-destructive technique. Spectra were first obtained using the 514.5 nm argon ion laser which proved the observation of 4 different groups. They then used the 830 nm NIR diode laser and divided the inks into three groups. They then combined the two lasers and a separation into 5 groups was obtained. They then attempted to identify the pigments contained in the gel by comparison to standard pigments. Two main pigments were detected in the analysed samples: PB15 and PV23. PB 15 is pigment blue 15 and belongs to the class of phthalocyanines. PV23 is the pigment violet 23 and belongs to the class oxazines. The argon laser allowed the detection of a mixture of PB 15 and PV 23. This was a better result than using the NIR diode laser. The results showed that the same gel pen ink (same model and brand) from different geographical locations showed the same Raman spectra. However, it was stated that the Raman technique obtained low discriminating values. 2. Materials and Method 2.1 Materials: Blue ballpoint pens Merck silica gel 60 TLC plates (20 cm x 20 cm) Methanol Ethyl acetate Ethanol (absolute) Paper Dessicator Developing chamber Puncher Glass tubes (0.1 ml) Capillary tubes 2.2 Experimental 13 blue ball-point pens (Table 1) were bought from a number of different shops in the town. A circle with a diameter of 5mm was written by the pen on paper. One fourth of it was punched out for extraction. The samples are placed in 1 ml glass tubes. 0.1ml of methanol was added and vigorously shaken for 1 min. The ink component was fully dissolved in methanol. The supernatant methanoic solutions were used for spot application on TLC plate. A blank of paper only is also treated as was a control which was a permanent marker. TLC analyses were preformed using Alugram 20 cm x 10 cm silica gel/UV plates (Macherey-Nagel). The plates were activated at 60 °C for 20 min and immediately after, cooled in a desiccator, and spotted. The plates were developed in a horizontal developing chamber. The solvent system included: ethyl acetate/absolute ethanol/ distilled water (70:35:30, v/v/v). Development was preformed at room temperature for 40 min. All mobile phases were prepared daily. After develo pment the plates were air-dried. All 13 different pens were tested in triplicate. Retention factors were calculated using the results from the plates and photographs taken using a digital camera were loaded onto the computer and analysed using image analysis software. Table 1: List of pens analysed Number Description 1 No Brand (blue) 2 Pilot G-207 3 BIC ReAction 4 BIC Medium (Bought in Tesco) 5 BIC Medium (Bought in Dunnes) 6 No Brand (Purple) 7 Staedtler Stick 430M 8 Roller Pen 9 Papermate 1.2M 10 Scripto Stick Pen 11 Papermate Write Bros. 12 Comfort Touch 13 No Brand (Tesco Click Pen) 3. Results and Discussion Before carrying out the experiment it needed to be researched. This research pointed out the importance of the correct solvent to remove the ink from the document. Djozan et al used methanol as their choice of solvent after considering other solvents (Table 2). They stated that Pyridine was the reported solvent used with ball-point pen inks. However, they carried out extractions with different solvents using various extraction modes. They realised that immersion of the paper into methanol with agitation resulted in complete extraction of the inks from the paper. Methanol was also chosen because of its safety. Table 2: List of solvents used for the extraction of ink components from paper Solvent Solubility of ink colours Ethyl acetate Slightly Ethanol Slightly Acetic Acid Slightly Acetone Slightly Butanol Slightly 1,2-Dichloroethane Slightly Butyl acetate Slightly Tetrachloroethane Slightly Acethyl acetate Slightly Cyclohexan Slightly Methanol Soluble Oyridine Soluble Different concentrations of the solvent system (Table 3) were analysed to see which gave the greater separation. It was found that the concentration given by Djozan et al, (ethyl acetate, ethanol, and water (70:35:30, v/v/v)) gave the best results. The Alugram silica Gell/UV plates were also found to work better than the suggested, Merck silica gel 60, plates without fluorescent indicator. Table 3: Concentrations of solvent system investigated Number Solvent system 1 ethyl acetate, ethanol, water (70:35:30, v/v/v) 2 ethyl acetate, ethanol, water (70:30:35, v/v/v) 3 ethyl acetate, ethanol, water (70:25:40, v/v/v) 4 ethyl acetate, ethanol, water (70:40:25, v/v/v) Table 4: Retention factors for all separated components pen spot 1 spot 2 spot 3 spot 4 spot 5 Solvent RF1 RF2 RF3 RF4 RF5 1.1 70 73 0.958904 1.2 70 73 0.958904 1.2 70 73 0.958904 2.1 62 69 73 0.849315 81.24194 2.2 62 69 73 0.849315 81.24194 2.3 62 69 73 0.849315 81.24194 3.1 57 60 62 70 0.814286

Marijuana Should Be Legalized for Medicinal Purposes Essay -- Argument

Marijuana Should Be Legalized for Medicinal Purposes How would most Americans react if the law allowed the use of heroin, LSD, or amphetamines for medical purposes? Many of us would react in disbelief mainly because of the effects of these powerful and addictive drugs. However, in Arizona the law permits the use of heroin, LSD, and amphetamines for medicinal purposes, yet the medicinal use of marijuana remains illegal in the United States ("Facts"). Because marijuana is categorized as a Schedule 1 drug under the federal Controlled Substance Act ("Issues"), physicians cannot legally prescribe it. The national debate on the effectiveness of marijuana as medicine is divided between those who advocate marijuana's medicinal value and those who dismiss the claim that marijuana poses any medicinal value. Although many regard the use of medicinal marijuana as a hoax, there is evidence to the contrary that helps to create a substantial argument as to marijuana's ability to provide effective relief from certain symptoms of disease. Patients of t erminal or critical illnesses should be allowed, under the care and supervision of a physician, the option of using marijuana for medicinal purposes. First and foremost, the medical value of marijuana is primarily a means of relief from the symptoms associated with diseases themselves and their treatments, not a cure. Therefore, its therapeutic values are not based on a particular disease, but rather the symptoms such as nausea, vomiting, and anorexia caused by loss of appetite and chronic pain. The exact reason why marijuana relieves such symptoms is not known but most likely lies in its organic composition and ingredients. Marijuana is made up of over 400 organic chemicals, 60 of which are... ...arijuana: the struggle for legalization." CNN Interactive. 1 Dec. 2013. http://www.cnn.com/HEALTH/9702/weed.wars/issues/background/index.html. * "What is the treatment cost of medical marijuana vs. the cost of Merinol?" 2 Dec. 2013. http://medicalmarijuanaprocon.org/bin/procon/procon.cgi?database. * "Clinical Pharmacology of Marijuana." Workshop on the Medical Utility of Marijuana. 1 Dec. 2013. http://www.nih.gov/news/medmarijuana/MedicalMarijuana.htm#clinical. * "Medical Value and Use: Do many physicians support medical marijuana?" Medical Marijuana procon. 1 Dec. 2013. http://www.medicalmarijuanaprocon.org/bin/procon/procon.cgi?database=5-B-Subs-1.db&co * "Medical Value and Use: What are the benefits and risks of Merinol vs. marijuana?" Medical Marijuana procon. 2 Dec. 2013. http://www.medicalmarijuanaprocon.org/bin/procon/procon.cgi?database

Comparing Women in Raisin In the Sun, House On Mango Street, and Yellow

Roles of Women in A Raisin In the Sun, The House On Mango Street, and A Yellow Raft In Blue Water      Ã‚  Ã‚   A Raisin In the Sun, The House On Mango Street, and A Yellow Raft In Blue Water all contain strong, defined images of women. These women control and are controlled. They are oppressed and liberated. Standing tall, they are confident and independent. Hunched low, they are vulnerable and insecure. They are grandmothers, aunts, mothers, wives, lovers, friends, sisters and children. Although they span a wide range of years and roles, a common thread is woven through all of their lives, a thread which confronts them day in and day out. This thread is the challenge they face as minority women in America to find liberation and freedom from lives loaded down with bondage. These women fight to live and in their living they display their strengths and their weaknesses. They demonstrate the opposition many women face being viewed as the inferior sex as well as discrimination against their ethnicity. In this struggle Hansberry, Dorris and Cisneros depict women attempting to find con fidence and security in the society around them. Comparing and contrasting the novels A Raisin In the Sun, The House On Mango Street, and A Yellow Raft In Blue Water, three principal images of women emerge: their strength, bondage and liberation. These images combine to depict the struggle of many minority women, regardless of their ethnic background, and shapes the character they draw from society.    "Now--you say after me, in my mother's house there is still God...There are some ideas we ain't going to have in this house. Not long as I am at the head of this family" (Hansberry 51). From Mama's ardent statement in A Raisin In the Sun, addressed to ... ... in the past has held them down. Finding strength in this new liberation they will be released to assist others in gaining their freedom and becoming whole individuals. We take courage and inspiration from the lives of Beneatha, Esperanza, Mama, Evelyn, Rayona and others as they display the struggle toward true womanhood and the strength to "come back. For the ones who cannot leave as easily as you" (Cisneros 105).    Works Cited: Blicksilver, Edith. The Ethnic American Woman. Kenall/Hunt Publishing; Iowa, 1978. Cisneros, Sandra. The House on Mango Street. New York: Vintage Books, 1991. Dorris, Michael. Yellow Raft on Blue Water. New York: H. Holt, 1987. Hansberry, Lorraine. A Raisin in the Sun. Literature and Its Writers: An Introduction to Fiction, Poetry, and Drama. Eds. Ann Charters and Samuel Charters. Boston: Bedford Books, 1997. 1829-96.

Bruce Dawe Essay

The Second World War changed many things: the face of Europe, the balance of world power, and, perhaps less notably, the perception of the common Australian. From Federation day to the 1940s, most poets wrote about the ideal ‘aussie’; the strong, silent outback-dweller; the Man from Snowy River or the Man who went to Ironbark. The 1950s were a time of change, and Australian Literature changed too, from aggrandizing the increasingly rare ‘Dundee’s, to noting the average Australian living in suburbia with the other four-fifths of the population. This essay will cite specific examples of poems of a man commonly regarded as Australia’s greatest living poet from 1950 to 1990. Through Bruce Dawe’s poetry the true Australian persona has arisen to global knowledge. One of Bruce Dawes most famous poems, written in the 1950s, is Enter Without So Much As Knocking. In this poem he highlights the plight of a ‘modern’ man who slowly comes to realize and embrace the faà §ade surrounding suburban life and its incessant consumerism. â€Å"Well-equipped, smoothly-run, economy-size† These terms give the feeling of mass production – just as well-equipped, smoothly-run, economy-size cars; these sorts of households must have been very common. Again the fact that these people lack individuality is being focused on and it is disputed whether this is correct. The rest of the family are presented as stereotypes. Whereas in the days of The Man From Snowy River, where individuality, rebelliousness and going against the grain are commonplace and celebrated as courageous, in this world, it would seem ‘inefficient’. The poem itself is discussing a man’s journey from birth to death and how all around him life is interpreted by material possessions. A famous quote from this poem shows the change that mechanized and money hungry living brings to man. â€Å"Anyway, pretty soon he was old enough to be realistic like every other godless money-hungry back-stabbing miserable so-and-so†. This is a dramatic transformation from the poems of war and outback mateship, of jumping on a grenade to save your friends in the foxhole. Now, â€Å"It’s Number One every time for this chicken, hit wherever you see a head and kick whoever’s down†. Clearly, Dawe is conscious of the changes affecting Australian persona. Bruce Dawe often uses humour to devastating effect. In Pigeons also are a way of life, a city councilor is mocked for his petty-mindedness, highlighting the utter bureaucracy that society and everyday life has become. â€Å"The problem was, he brooded overmuch, and took things personally that were not meant, so that each juvenile delinquency of nature seemed an outrage aimed at him† This quote encapsulates the trivial nature of the councilor, that he considered nature juvenile, and that he was too puffed-up in his self importance to respect habits that have and will outlast him, his city and certainly his civilization. This is done to bring to light the incredible conceit of man in relation to the environment. Whereas the bushman lived off the land, respecting it, modern man destroys it contemptuously to make room for suburbs and cities, and it’s men like this who are responsible. Homo Suburbiensis is a poem about a man, a regular man, with a garden that represents his escape from the demands of his existence. â€Å"Homo Suburbiensis† uses one man’s escape from his life to represent our universal need to contemplate and resolve our own uncertainties in life in our own special place. This poem speaks about suburbia, and escaping from it into nature, Bruce Dawe illuminates the plight of this man and how the tolls of modern life are affecting him. â€Å"One constant in a world of variables† represents how this small garden in is his only avenue for escaping into order, his order. Whereas the outback is constantly described as freedom, this man’s only freedom is a small vegetable patch. A little known poem from the 1980s era of Bruce’s writings, Looking Down from Bridges, takes a look back at the world of his childhood, from the perspective of nostalgia. â€Å"Looking down we see an earlier world living on in the interstices of the present, like green wheat in the gutters of the bulk feed store or the odd shy weatherboard holding out between factories† This citation details the vision of the past through the mind’s eye to childhood, showing the simplicities of an earlier time where there were fewer factories, where â€Å"troops of tiny children tentatively skipping† played in the street. This is Bruce where he is his most grandfatherly, regaling tales  of how life used to be, and how it has changed, from small wooden houses with bush on either side to sprawling conurbation without room to breathe or, in the children’s case, to play in the streets. ‘Life-cycle’, is one of his well-known poems that dramatises how the common ‘Aussie bloke’ is influenced by football. It ridicules the fact that football for people has become like a religion. Not speaking of a specific event, this poem describes the general cycle of life of a resident of suburban Australia. From birth people are encouraged to barrack for their teams, and build a life around football. This ‘religion’ is implied on the ‘innocent monsters’ by their parents and surroundings. â€Å"they are wrapped in the club-colours, laid in beribboned cots, having already begun a lifetime’s barracking† Dawe is showing that this will be the purpose of the child’s life. He will grow up living and breathing football, and worshipping it without giving a second thought to the true purpose of life. Using simple structure and simple language, he is able to best convey his morals to the common people that it affects. Gently mocking people with his vibrant expression of the game, with Christian symbolism he compares it to the bible – highlighting that it is, but shouldn’t be regarded of the same importance as Christianity. â€Å"They will forswear the Demons, cling to the saints and behold their team going up the ladder into Heaven† Dawe describes the actual important things in life – marriage, proposals, as just a sidetrack to football, done quickly in between games. Football is the focus of these people’s lives – anything else is merely a diversion to football and should be taken care of quickly so that they can get back to the game. â€Å"- the reckless proposal after the one-point win, the wedding and the honeymoon after the grand-final†¦Ã¢â‚¬  We almost begin to pity these poor people, to whom living their lives has taken second place in importance to football. By using triumphant words such as ‘behold’ ‘passion’ and ’empyrean’ Dawe is showing great sarcasm, as he did with the Christian symbolism. It is like he is asking the readers why football is now as important to the Australians as their religion, and highlighting the fact that it is not supposed to be like this. From this  quote: â€Å"having seen in the six-foot recruit from Eaglehawk their hope of salvation† Bruce Dawe purposefully makes the last word of the poem salvation, this word, generally associated with heaven, and the fact that living a good, Christian life will supposedly lead to our salvation and we will go to heaven, not hell. But it is not from God that these people gain their salvation – they see salvation in the recruit, the strong football player who has come to play for their team and could bri ng the team victory. With that Dawe makes obvious the skewed priorities of these people, and how futile and pointless their existence is. ‘Carn, carn’ they cry, from birth unto death, never knowing anything else, never living. As is evident, Bruce Dawe truly has highlighted the changes in Australian literature. Changes brought about by himself, for he is truly the most influential Australian Poet of this century. By departing from the common norm of Outback mythology to discuss the curve of a man’s life, his passion for sport and the ways in which suburbia has taken over Australian lives, he earns his title of the ‘People’s Poet’. Bruce Dawe has changed the perception of the average Australian worldwide.

Horticulture and Landscape Architecture

Fee Penn Interview Report Campus design is an art consisting of multiple and overlapping designs like determining the locations of teaching buildings, residence halls and so on. As a landscape architecture student, I am interested in this topic. I interviewed professor David Michael Barbarism, who is an assistant professor of landscape architecture in Purdue University. Proof. Barbarism earned a bachelor's of landscape architecture from Virginia Tech and a master of science from the department of landscape architecture at State University of New York Environmental School ofForestry. Before he came to Purdue, he worked in design firms from NYC and Washington D. C where he did a lot of different types of landscape designs including campus design. The day I interviewed Proof. Barbarism was a nice day with warm sunshine and blooming flowers everywhere, Purdue campus seemed to wake up from the dead winter. Nice weather leads to a nice mood, as does a nice campus design. When I asked Proof . Barbarism how Virginia Tech campus influenced his study life, he smiled and shared his story with me happily.He said the first time he walked around in Virginia Tech, he just fell in love with it and noticed that this place was the very place he wanted to go without even learning about the programs. He thought the campus Just felt right to him. It had a consistent style, a great level of public students' space from big wide open areas to little shelter private gathering areas. These were all what he thought a college should be like. From his point of view, campus landscape really has an unimaginable effect on students' lives. Proof. Barbarism did some campus design project when he was working for design firms.When I asked the key points when designing a campus, he thought a few seconds and figured out two main points which were a sense of scale and a sense of place. He explained that a sense of scale should bring comforts to people, for example, a sense of enclosure enough to feel like you are not standing in the middle a big field. The designer should leave enough space to let tons of students to walk between teaching buildings during the ten-minute break. When talking about a sense of place, he used a very effective example which I easily understood.He said to me:† k, meet me at the bell tower, you know where we meet? † The answer was obviously positive. In fact, that's the sense of place, the bell tower has its own location and it's very different from the other places. Both a sense of place and a sense of scale were the two key points he mentioned for campus design. After asking some questions about his experience being a student and a landscape architect, we shared some different opinions on Purdue campus design. We reached agreements on some issues. For example, we both thought State Street was kind of annoying because it cut the campus into two pieces.I remember the first time I arrived in Purdue in August, I let this campus was Just the n orth side of State Street. Proof. Barbarism nodded his head when I was talking and added his comments that there should be a special entry sign on State Street to let people know they were arriving in Purdue campus. We both thought State Street should be a good connection between the north and the south parts instead of being an awkward cut line of the whole campus. When talking about the locations of residence halls, we held different opinions.From my perspectives, Purdue should place the residence halls around teaching alluding so that students can have only a 5-minute walk to class Just like Hawkins Hall. However, Proof. Barbarism didn't agree with me. He shifted his chair, thought a few seconds and put some important points which I hadn't thought of before. He said the reason why many campus put academic areas separated from living areas was because their different functions. Purdue clustered most of the residence halls because they shared some facilities like dining courts, lau ndry systems and open space for fun.On the other hand, academic areas need a quite academic atmosphere tit libraries and laboratories. Considering these two different functions, it was better to separate residence halls and teaching buildings Just like what Purdue had done. Though we had different ideas of where to place residence halls, we had the same idea with respect to making the campus more pedestrian-oriented especially the way from residence halls to teaching buildings. Proof. Barbarism told me his first impression of Purdue campus was that it's an automobile-oriented campus. In fact, I couldn't agree more. There are not any interesting views along the street.I Just walk own the street and the only thing could stop me is the crossing. We both think the next step Purdue should consider is the design of State Street corridor. State Street is very important not only because it's a very busy street but also because driving though gives a quick view of Purdue campus especially fo r drivers who Just pass by. This street might be driver's first impression of Purdue campus. The discussion was so involving that I almost lost track of time. Finally, Proof. Barbarism told me the good news was that most of the improvements we talked about will show up in the future master plans.Purdue amp's designers are trying their best to improve the whole environment. He said what we should do was Just to wait and see. Thanks to Proof. Barbarism for his time to let me think about campus design with him together. I learned a lot about not only some specific terms of campus design but also some logical thinking methods to judge things like where to put residence halls. I need to take all factors into consideration and think it not only as a student but also as one of the other people who work or play on campus. We critique Purdue because we love Purdue. I am so proud to witness the growth of our Purdue campus.

Managing Individual Performance Essay

Abstract This paper will discuss how managing individual performance have affected my personal and professional development. It will also briefly identify and discuss several written works on Maslow’s Hierarchy of Needs as well as the Myers-Briggs Type Indicator. Also this paper will discuss my experience through the Managing Individual Performance simulation and results improvement. Managing Individual Performance A good manager can motivate employees and equally to go the extra mile, and complete the unachievable, despite their limitations. As a leader and manager of people, it pays to understand what is important to each team member. Understanding motivation helps me to put my emotions and actions in perspective. Contemporary motivational theories recommend that managers should realize individual differences, evaluating needs correctly and addressing these through the right interventions. Criteria a team leader use when selecting members of a team Team leaders or managers must ensure that the teams and their projects have the ability to survive. To maintain the team’s viability, I included the following elements: proper membership, interpersonal skills, each member should be a contributor, a clear charter or purpose, achievable, noticeable results, understand and agreed-upon ground rules, and intensive teambuilding up front. The changes needed to improve team effectiveness across the organization do not involve individual teams, but rather the systems that support them. These systems include the following: organizational structure,  motivation, promotion and performance appraisal criteria, and compensation. In addition, Jeff Cowell and Jerry Michaelson (2000), recommend â€Å"in selecting team members, and prepare a draft charter† (p11). It is very important to prepare a draft charter where you can briefly describe the team’s purpose, and you can see candidates interest. Team selection in the simulation I selected the team in the following order: first, Michelle Levy for the build case files position, because she is a natural problem solver with good communication skills, and an investigative nature of collecting facts. My second selection was Lisa Srafford holding the moderate self-help groups. She has conflict management skills, ability to facilitate groups meeting and very patient in stressful situations. My third selection was Tony Wu to perform follow-ups. Tony has capability to interpret reported data, good observation skills, and his bachelors in business make him more capable in accounting for external factors. My last team member, Daniel Nichols, trainer with knowledge and domineering attitude, was selected to supervise confrontation sessions. His Master in Business Administration (MBA), prepared him to have good communication skills, excellent conflict management, and with his strong personality made him capable of build mutual respect, discipline, and motivation to victims while handling sensitive personal issues. Factors I need to consider in order manage my team effectively There are many factors in order to manage a team effectively. McShane-Von Glinow (2002) gives us six of the important elements â€Å"reward systems, communication systems, physical space, organizational environment, organizational structure, and leadership† (p232). Reward systems indicate that people tend to work more effectively when they are partly rewarded for their performance. Communication systems, maintain valuable information and feedback between team members. Physical space, with a good layout will improve communication between team members. Organizational environment and structure, where team members have secure resources for their performance. Last but not least, the most important factor is leadership to maintain the ongoing support from all executives to provide the right coaching,  motivation, and all elements mentioned. Individual’s personality play a role in the team’s success Kreitner (2003) describe personality as â€Å"the relatively stable pattern of behaviors and consistent internal states that explain a person’s behavioral tendencies† (p84). Personality has both internal which represent the thoughts, values, and genetic characteristics, and external elements are the observable behaviors. Also personality has recover credibility in organizations in the last years, the reason is that some personality habits predict some work-related behaviors and emotions under certain conditions, and stress reactions. Besides individual personality play a role in the team’s success because this help people find the jobs that best suit them and their company’s needs. Personality preference in the MBTI assessment and how this may affect the way an employee carries his or her tasks. Depending on the job description, you can find personality preference in the Myers-Briggs Type Indicator (MBTI). We have 16 distinct types. Some job description prefer ISFJs people with a high sense of duty, others prefer ENTJs because they are considered natural leaders. For example, corporate executives tend to be ESTJs, meaning that they are more extroverted, sensing, thinking and judging types, and so on. These types indicate a person’s preference. All of this may affect the way an employee carries his or her tasks because these types do not indicate the way he or she behaves all the time. I think that these indicators can limit the creativity and decision making besides limiting good people to perform a specific job in determinate area. Maslow’s Hierarchy of Needs, how it affects motivation and my team choice. McShane-Von Glinow (2002), described Maslow’s Hierarchy of Needs as â€Å"a content motivation theory of five instinctive needs arranged in a hierarchy, whereby people are motivated to fulfill a higher need as a lower one becomes gratified†(p133). From the bottom those are physiological, safety, belongingness, self-esteem, and the top is self-actualization. People have different levels of motivation, and they may fit one of those levels. As a leader you have to measure the needs of each member of your team, because  when you have to motivate or reward them, you can select the wrong level. According to Maslow the lowest needs are initially most important, but higher need become more important as the lower ones are satisfied. Maslow’s model may not predict employee needs as well as scholars initially expected. Team selection and how that falls on Maslow’s Hierarchy of Needs During the simulation, I selected the best people for the different positions. It was an 8 months project. I had my first situation during the second month. I failed at motivating one of my team members, giving me the wrong results. The same situation was present in month 4 with other team members. After I repeated the simulation and learn more about my team members needs, I overcame those situations successfully. Team selection performance, expectations and  factors in selecting strategies to motivate my team Money and other financial rewards are a fundamental part of the employment relationship. Also public recognition, awards, and membership will help employees to have better performance. It is important to know the different levels of needs mentioned before. You have to know what kind of an employee need have in that moment. Some of the factors include task performance, competencies, job status and seniority. Results improvement after running the simulation again I repeat the simulation three times, and definitely each time my results improved significantly. My weakness was motivating my team members with the inappropriate reward, giving as a result to the decrease in the team performance. Application of the lesson learned at my workplace Job design involves assigning task to a job and distributing work throughout the organization. Job specialization, which subdivides work into separate jobs for different people, increase work efficiency because employees achieve the tasks quickly, less training, and matching more closely with the jobs best suited to their skills. Although, reduce stress, problems, increase product or service quality, and decrease costs. Leadership is the process of influencing oneself to establish the right direction and  motivation needed to perform a task. Also I have to include personal goal setting, constructive thought, design the right rewards, self-monitoring, and self-reinforcement. Better knowledge of the needs of each team members will help leaders to make the right decisions without affecting the individual performance. Leaders require a process of observation, reflection, and evaluation. It necessitates that we take time periodically to think about what has happened. Were there conflicts? How were they handled? What has gone well and why has it? What has not gone well and why? Could we have done better? Most importantly, we must develop the skill of asking ourselves what steps we can take to be more effective either in our current team or as a member of future teams. As I said in the beginning, a good manager motivates people to achieve the impossible without limitations. This become possible only with a clear understanding of each individual needs with the help of all motivational theories recommended. This understanding is implemented though optimal intervention. Also evaluating needs correctly and addressing these though are the right interventions. References Bagraim, J. (2001). Organizational psychology and workplace control: the instrumentality of Corporate culture. South African Journal of Psychology; Sep2001, Vol.31, Issue 3 p43. Bower, M. (2003). Company philosophy:† the way we do things around here† McKinsey Quarterly; 2003 Issue 2, p110, 8p.3c. [University of Phoenix Special Edition Series]. Cowell, J., Michaelson, J. (2000). Flawless Teams. Executive Excellence, 17(3), 11.[University of Phoenix Special Edition Series] Kreitner, R. (2003). Organizational Behavior, Sixth Edition. New York: McGraw-Hill McShane-Von, G. (2003). Organizational Behavior, Second Edition. New York: McGraw-Hill