Yoga Essay -- essays research papers

The term Yoga has a few meanings. It's both a school of thought in the Hindu religion, and a system of mental and physical exercise developed by this school. All forms of yoga originated in India. People who follow this school, and practice any form of yoga are called yogis, or yogins. Students study under prolonged and careful guidance of the teacher, known as the guru. The first syllable 'gu,'; in Sanskrit means light; the second syllable, 'ru'; means light. A guru is a spiritual teacher who leads the pupil from darkness to light. Literally, yoga means 'the union of mind and body.'; In Sanskrit, the language of India, yoga means discipline. Many people in western countries practice some form of yoga exercise in hope of improving their health, and achieving peace of mind. Various forms of yoga have become popular in Europe and the United States. Transcendental Meditation is a simplified version of the yoga of Hinduism. Bhakti-Yoga involves the dedication of all actions and thoughts to a chosen God. Hatha-Yoga, stresses difficult bodily postures and breathing techniques. It has become very popular as a method of gaining and improving health. Certain people also study this form of yoga because of the control they develop over certain bodily functions. A new concept in fitness combines gentle stretching with techniques from Hatha Yoga to perform the most effective, relaxing ways of exercising. It is called Yogacise. There are other forms of yoga that are practiced in India. T...

Immigrant assimilation Essay

Immigrant assimilation is a well known process in which a group of immigrations change their culture in order to adapt with the dominant society, which are the native people of a certain country. In the United States, this process had been widespread since the early 1800s, where immigrants gradually become similiar with natives. There are two kinds of assimilations. The first one is that immigrants are becoming more similar over time in norms, and behaviors, while the second one , the racialor ethnic disadvantage model states that mostly black immigrants or other races that are discriminated have no chance to assimilate. An example of this model is discrimination to job opportunities. There were three theoretical explanation referring to assimilation. In 1845 Ralph Emerson referred to assimilitaion as the main idea for imigrants of changing themselves in an equal way, because not only the europians, but also the other races can contribute to the new formed citizens. Mead and Kwan stu died a person’s treatment in society for what he truly is and not categorizing people in racial minorities. Robert Park interpretated assimilitation as a process in which people share experiences together and in this way help the immigrants to be part of the american mainstream life. He viewed this process as the end of the stage of race cycle. After World War 1, he and Thomas, after some studies of immigrants in Chicago,explained that it will be easier if immigrant groups were left to make this process happen slowly and not being forced to change because of the feeling discriminated. It has been proved that people were more efficient this way, and assimilation shows inwhat direction are these people actually moving or changing. The third theory shows Gordon’s points of view. He explained assimilation through acculuration, which according to him is a one way process where the minority integrates with the majority. He also focused on the generational change because he noticed that the first generation of people that were born somewhere else in the world were less assimilated than the second one, their children. The measurable aspects of assimilation are socioeconomic status, spatial concentration, language attainment, and intermarriage. The first one refers to education, wealth, and occupation. The second one is defined by residential patterns, while the third one indicated their first language, and the last one is defined by race or ethnicity. I agree on Gordon’s statement about the generation change and the segmented assimilation theory which focuses on the notion that people adapt in different ways with their life in the United States, depending on their social and economic factors. Immigrants come from diverse backgrounds, and their children known as second generation immigrants, have another experience regarding cultural conflict compared to their parents and that of mainstream american society. These second generation immigrants seem to assimilate into society easier. Three major groups including Hispanics, African Americans, and Asian Americans make up the population of second generation immigrants in the United States. Latinos have resulted really successful in businesses in LA and Miami, and a lot of new students are enrolled in schools. In contrast to their parents, second generation Hispanics are more likely to intermarry with members of other racial groups. The second generation immigrants of African Americans seem to be more aware of racial discrimination. In addition, the assimilation into black society and black culture in the U.S. by these children is hindered by their parents’ oppositional stance to American black culture, contributing to identity conflict. A considering percentage of the Asian population in the U.S. can be categorized as a second generation immigrants. Again, we can see the segmented assimilation theory in practice here because the cultural assimilation of second generation Asians is diverse, where many are highly educated, which results that asians have achieved a lot and consist on middle class families. The second generation of immigrants are truly part of the society and should not be considered foreign. In conlusion, immigrant assimilation is a complex process in which immigrants not only fully integrate themselves into a new country, but also lose a lot of aspects of their native cultures. The most common route to economic well-being for the young adults is to join the mainstream. This meticulously researched project shows that immigrant youths in fact fare better than both their parents and their native counterparts. This second generation advantage reflects the systematic differences between immigrant and native groups For example, adult children of immigrants are more likely to live at home in multigenerational households than native bourns. Moreover, the presence of extended family members could allow for more working adults to pool income together, and thus make more resources available per child.

Calculating Concentrations with Units and Dilutions

Calculating the concentration of a chemical  solution  is a basic skill all students of chemistry must develop early in their studies. What is concentration? Concentration refers to the amount of solute that is dissolved in a solvent. We normally think of a solute as a solid that is added to a solvent (e.g., adding table salt to water), but the solute could easily exist in another phase. For example, if we add a small amount of ethanol to water, then the ethanol is the solute, and the water is the solvent. If we add a smaller amount of water to a larger amount of ethanol, then the water could be the solute! How To Calculate Units of Concentration Once you have identified the solute and solvent in a solution, you are ready to determine its concentration. Concentration may be expressed several different ways, using percent composition by mass, volume percent, mole fraction, molarity, molality, or normality. Percent Composition by Mass (%)This is the mass of the solute divided by the mass of the solution (mass of solute plus mass of solvent), multiplied by 100.Example:Determine the percent composition by mass of a 100 g salt solution which contains 20 g salt.Solution:20 g NaCl / 100 g solution x 100 20% NaCl solutionVolume Percent (% v/v) Volume percent or volume/volume percent most often is used when preparing solutions of liquids. Volume percent is defined as:v/v % [(volume of solute)/(volume of solution)] x 100%Note that volume percent is relative to the volume of the solution, not the volume of solvent. For example, wine is about 12% v/v ethanol. This means there is 12 ml ethanol for every 100 ml of wine. It is important to realize liquid and gas volumes are not necessarily additive. If you mix 12 ml of ethanol and 100 ml of wine, you will get less than 112 ml of solution.As another example, 70% v/v rubbing alcohol may be prepared by taking 700 ml of isopropyl alcohol and adding su fficient water to obtain 1000 ml of solution (which will not be 300 ml).Mole Fraction (X) This is the number of moles of a compound divided by the total number of moles of all chemical species in the solution. Keep in mind, the sum of all mole fractions in a solution always equals 1.Example:What are the mole fractions of the components of the solution formed when 92 g glycerol is mixed with 90 g water? (molecular weight water 18; molecular weight of glycerol 92)Solution:90 g water 90 g x 1 mol / 18 g 5 mol water92 g glycerol 92 g x 1 mol / 92 g 1 mol glyceroltotal mol 5 1 6 molxwater 5 mol / 6 mol 0.833x glycerol 1 mol / 6 mol 0.167Its a good idea to check your math by making sure the mole fractions add up to 1:xwater xglycerol .833 0.167 1.000Molarity (M) Molarity is probably the most commonly used unit of concentration. It is the number of moles of solute per liter of solution (not necessarily the same as the volume of solvent!).Example:What is the molarity of a s olution made when water is added to 11 g CaCl2 to make 100 mL of solution? (The molecular weight of CaCl2 110)Solution:11 g CaCl2 / (110 g CaCl2 / mol CaCl2) 0.10 mol CaCl2100 mL x 1 L / 1000 mL 0.10 Lmolarity 0.10 mol / 0.10 Lmolarity 1.0 MMolality (m) Molality is the number of moles of solute per kilogram of solvent. Because the density of water at 25 °C is about 1 kilogram per liter, molality is approximately equal to molarity for dilute aqueous solutions at this temperature. This is a useful approximation, but remember that it is only an approximation and doesnt apply when the solution is at a different temperature, isnt dilute, or uses a solvent other than water.Example:What is the molality of a solution of 10 g NaOH in 500 g water? (Molecular weight of NaOH is 40)Solution:10 g NaOH / (40 g NaOH / 1 mol NaOH) 0.25 mol NaOH500 g water x 1 kg / 1000 g 0.50 kg watermolality 0.25 mol / 0.50 kgmolality 0.05 M / kgmolality 0.50 mNormality (N) Normality is equal to the gr am equivalent weight of a solute per liter of solution. A gram equivalent weight or equivalent is a measure of the reactive capacity of a given molecule. Normality is the only concentration unit that is reaction dependent.Example:1 M sulfuric acid (H2SO4) is 2 N for acid-base reactions because each mole of sulfuric acid provides 2 moles of H ions. On the other hand, 1 M sulfuric acid is 1 N for sulfate precipitation, since 1 mole of sulfuric acid provides 1 mole of sulfate ions.Grams per Liter (g/L)This is a simple method of preparing a solution based on grams of solute per liter of solution.Formality (F)A formal solution is expressed regarding formula weight units per liter of solution.Parts per Million (ppm) and Parts per Billion (ppb)Used for extremely dilute solutions, these units express the ratio of parts of solute per either 1 million parts of the solution or 1 billion parts of a solution.Example:A sample of water is found to contain 2 ppm lead. This means that for every mill ion parts, two of them are lead. So, in a one gram sample of water, two-millionths of a gram would be lead. For aqueous solutions, the density of water is assumed to be 1.00 g/ml for these units of concentration. How To Calculate Dilutions You dilute a solution whenever you add solvent to a solution. Adding solvent results in a solution of lower concentration. You can calculate the concentration of a solution following a dilution by applying this equation: MiVi MfVf where M is molarity, V is volume, and the subscripts i and f refer to the initial and final values. Example:How many milliliters of 5.5 M NaOH are needed to prepare 300 mL of 1.2 M NaOH? Solution:5.5 M x V1 1.2 M x 0.3 LV1 1.2 M x 0.3 L / 5.5 MV1 0.065 LV1 65 mL So, to prepare the 1.2 M NaOH solution, you pour 65 mL of 5.5 M NaOH into your container and add water to get 300 mL final volume