Critical Psychology and freedom Term Paper Example | Topics and Well Written Essays - 1500 words

Critical Psychology and freedom - Term Paper Example Freedom means being out of external coercion from all aspects of life. In most cases this coercion comes from the government. Globalization has been brought about by individuals desire to live better and to be free. The importance of a globalized world is the mobility associated with it across the world. The key attraction to globalization is freedom as suggested by Micklethwait and Wooldridge (2000). The nature of globalization overcomes the barriers associated with where to invest, what to buy or where to go thus giving individuals the chance to make choice. This freedom associated with globalization is in terms of social, political and economic freedom. In the case of political freedom, globalization provides for the best opportunities good governance and democracies. Globalization brings economic freedom in terms of free market competition for goods and services. Social freedom means that individuals are free to move to all parts of world and interact freely without any kind of r estriction. However some scholars According to Nikolas Rose, Freedom and its value is becoming principle of most of the political endeavor and projects. The free world where the individuals dwell is triumphed with free market economy brought about by globalization according to Rudnycky (2010). The aspect of freedom according to Nikolas Rose underpins individual’s perception of how they want to be organized, ruled and understood in respect to their predicament. In the past, freedom in all spects of life was seen to eradicate social stability, order and ethics of work, civility and the value of the family. Today with the growth of globalization, freedom is valued as it brings about social mobility. Individuals have desired to be free and are always on the motive of getting liberation. However political freedom appears to be paradoxical and is almost theoretical rather than practical. According to Rose, this is because the world today is characterized by the opposition existing between freedom and government. As suggested by Baum (2000), the value of current politics has been defined by the value of liberalism. A state which is liberal is limited in that the practices of the government are restricted by individual liberty. With the issue of globalization freedom is understood as practical, material, governmental and technical. The principle of individual freedom is only moral aspect which has led to growing and advanced civilization. Protecting and enhancing citizens’ freedom secures the state’s wealth, productivity, health and its welfare. Nikolas Rose argues that freedom has been the governments’ objective. It is also perceived as governments’ instrument and means of promoting the intervention of various governing technologies. According to Zygmunt Bauman, Freedom refers to a situation whereby the motives of the individual shape their actions and the desired results of the outcome. Just like Rose, Bauman is against the idea th at freedom existing universally. Bauman argues that freedom in the modern world is constructed as a social creation and capitalism development resulting from privileges and power. In his discussion on the concept of freedom Bauman uses three different themes as suggested by Oksala (2005). One of these themes is relational concept freedom which implies that freedom to one individual is lack of freedom t anther individual. Secondly is the issue of the influence capitalism has on modern freedoms. Finally, he underscores the idea of government’

The Importance of Entrepreneurship and Enterprise in the UK Essay - 1

The Importance of Entrepreneurship and Enterprise in the UK - Essay Example ameters which tend to change continuously, however when all appropriate preparation has been made, entrepreneurship can lead to a significant development of the commercial market involved. However, in order to ensure the success of their efforts, entrepreneurs should try to follow strictly the principles of the commercial market avoiding risk in cases that there are no limits for the achievement of a particular plan. The existence of alternative plan of action has to be considered as necessary in order for the entrepreneurship to survive on a long term basis. Entrepreneurship should be considered as a fundamental activity that helps the market to be developed. However, in order for this activity to lead to positive outcomes it is necessary that the participants (entrepreneurs) follow a specific plan of action which has to be characterized by the thorough analysis of the market, the appropriate design of strategic plan and the rapid reaction to the opportunities appeared. Of course in any case the existence of risk creates a series of uncertainties for any potential entrepreneurship. But if all appropriate steps of action are followed they are little chances for the entrepreneurship to end up to a failure. This paper examines the characteristics of entrepreneurship as a unique commercial activity and tries to identify all the appropriate ‘qualities’ of a good entrepreneur as they can be observed both in the field of theory but also in practice. For this reason, the relevant literature review has been followed with a few examp les of successful entrepreneurs in UK as they have been evaluated and awarded in a relevant awarding scheme involving entrepreneurial activities in UK. Entrepreneurship has been defined through a variety of terms in order to respond to the needs of the market as they have been observed by theorists throughout years. At a first level, Thornton (1999, 19) refers to entrepreneurship as ‘the creation of new organizations which occurs as a

Fetal Heart Rate and Defects Essay Example for Free

Fetal Heart Rate and Defects Essay Electronic fetal heart monitoring is commonly used for tracking how well the baby is doing within the contracting uterus and for detecting signs of fetal distress. External fetal heart monitoring is performed by attaching external transducers to the mothers abdomen with elastic straps. The transducers use Doppler ultrasound to detect fetal heart motion, and the information is sent to the fetal heart monitor which calculates and records the fetal heart rate on a continuous strip of paper. More modern fetal heart monitors have incorporated microprocessors and mathematical procedures to improve the fetal heart rate signal and the accuracy of the recording. An echocardiography can be used before birth to accurately identify many heart defects. The mother can be treated with medications that may restore normal heart rhythm in the fetus if the test shows that a fetus’s heart is beating too fast or too slow (Emitting Waves, R.C., n.d.). The fetal heart starts as a tube which folds and fuses in a complex structure that results in a muscular pump with four chambers and four valves. It is not surprising that small errors in development can lead to a wide variety of structural abnormalities in the 4 chambers, the 4 heart valves, the veins and great arteries. During fetal monitoring, a nurse will evaluate the strip for continuity and adequacy for interpretation, identify the baseline fetal heart rate and presence of variability, determine whether there are accelerations or decelerations from the baseline, identify patterns of uterine contraction, and correlate accelerations and decelerations with the uterine contractions. This will allow the nurse to determine whether the fetal heart rate recording is reassuring, non-reassuring, or ominous (Childrens Heart Federation, n.d). Fetal Heart Rate and Defects The normal fetal heart rate is between 110 to 180 beats per minutes (BPM), but can vary. Fluctuations of the fetal heart rate (usually associated with fetal movement) during different periods of the day are common and often rise above 160, going as high as 180 to 190 and are considered normal. Listening to a normally beating heart using a fetal ultrasound Doppler as early as 8 weeks can offer reassurance and cut down on a lot of stress and help assure that the developing fetus is healthy. While miscarriage occurs in only about 15 percent of apparently normal pregnancies, it only occurs in about 1 percent of pregnancies where a normal heartbeat has been seen or heard (Medscape, n.d). Recent studies conclude that changes in pregnant womens heart rate and blood pressure due to chronic stress and anxiety can have an effect on the fetal heart rate. The study did not report any negative effects on fetal health but confirmed that emotional based changes in a womans cardiovascular activity c an have real-time effects† on a fetus. A previous study has shown that stress during pregnancy can cause an increase in the risk of low-birth weight and premature birth. More importantly, increased evidence suggests that pregnancy stress can actually affect the babys behavior and functioning later in life (NT: Detection Rate CHD, n.d.). The ability for expectant mothers to listen to the fetal heart rate with a fetal Doppler offers a safe method of early fetal bonding which was previously only available at prenatal appointments with a medical professional. With its approval for in home by the FDA expecting parents have increasingly been opting to rent or purchase fetal Dopplers to help relieve some of the stress associated with the unknowns of early and late pregnancy. Fetal Doppler rentals are currently available through many online retailers at very affordable rates. Fetal heart rate monitoring is the process of checking the condition of a baby during labor and delivery by monitoring his or her heart rate with special equipment. Electronic fetal heart rate monitoring (EFM) was first introduced at Yale University in 1958. Since then, continuous EFM has been widely used in the detection of fetal compromise and the assessment of the influence of the intrauterine environment on fetal welfare (Evans and Niswander, 2000). There are two methods of fetal heart monitoring in labor. External fetal monitoring is done through the skin and is not meant to be invasive. Sensitive electrodes (connected to monitors) are placed on your abdomen over conducting jelly. The electrodes can sense the fetal heart rate (FHR) and the presence and duration of uterine contractions. Usually, the results of this test are continuous and are printed out, or they appear on a computer screen. Internal fetal monitoring involves placing a electrode directly on the fetal scalp through the cervix. The health care provider may use this method of monitoring your baby if external monitoring is not working well, or the information is inconclusive. Both types of tests are performed to evaluate fetal heart rate and variability between beats, especially in relation to uterine contractions. The tests also indicate the frequency and strength of uterine contractions (Belmont, 1998). Fortunately, fetal heart monitoring tests can detect numerous abnormal situations or conditions during pregnancy, such as reduced blood flow to the developing baby (cord compression), block of electrical signals within the heart muscle, causing an altered heart beat (fetal heart block), incorrect positioning of the baby (fetal malposition), too little oxygen supply to the developing baby, suggest the presence of infection, too little oxygen exchange between the uterus and the placenta, fetal distress, placenta abruption, and severe anemia in the developing baby. Most common heart defects, such as holes between the chambers (atrial septal defect, ventricular septal defect) and even more complex conditions such as transposition of the great arteries and tetralogy of Fallot, can be successfully managed after birth (Belmont, 1998). Many of the aforementioned situations detected during a fetal heart monitoring could mean that the baby has a congenital heart defect. There are many types of congenital heart defects which is why it is so important that the fetal heart monitoring be done before and during labor. A fetal heart defect means that the baby will be born with a problem in the hearts structure. Learning of the childs congenital heart defect can help to understand his or her condition and what you can expect in the coming months and years. Some congenital heart defects are simple and dont need treatment. Other congenital heart defects in children are more complex and may require several surgeries performed over a period of several years. Heart-related complications can be temporary or may affect the child long-term (Emitting Waves, R.C, n.d.). One examples of a congenital heart defect is pulmonary atresia, which is when no pulmonary valve exists, so blood cant flow from the right ventricle into the pulmonary artery and on to the lungs. The right ventricle acts as a blind pouch that may stay small and not well developed. The tricuspid valve is often poorly developed, too. An opening in the atrial septum lets blood exit the right atrium, so venous (bluish) blood mixes with the oxygen-rich (red) blood in the left atrium. The left ventricle pumps this mixture of blood into the aorta and out to the body. Pulmonary atresia occurs in about one out of every 10,000 live births (Pulmonary Atresia, n.d.). Another type of congenital heart defect is congenital heart block, when detected at or before birth in a structurally normal heart, is strongly associated with autoantibodies reactive with certain proteins. In this defect, the hearts electrical signal doesnt pass from the hearts own natural pacemaker in the atrium to the lower chambers. When this occurs, an independent pacemaker in the lower chambers takes over. The ventricles can contract and pump blood, but at a slower rate than the atrial pacemaker. Complete heart block is most often caused in adults by heart disease or as a side effect of drug toxicity. Heart blocks can be present at birth (Belmont, 1998). Continuous lumbar epidural anesthesia is commonly used for analgesic treatment during labor and delivery; It is still a matter of controversy whether epidural anesthesia has direct or indirect side effects on the fetus. It has been reported that local anesthetics can cause changes in the fetal heart rate patterns in the sense of direct myocardial side effects (Evans and Niswander, 2000). It is apparent that there are marked cardiovascular changes that occur in the fetus with a congenital heart defect compared with the normal healthy fetus. Without the use of fetal heart monitoring tests, we would be unable to determine if the fetus has a congenital heart defect which could drastically delay treatment of the condition. Treatment varies widely with the type of disease, the effect that pregnancy has on the disease, and the effect that the disease has on pregnancy. If it is the fetus that has a problem, serial ultrasounds may be performed. Fetal heart rate monitoring may be necessary, or amniocentesis may be required. In addition, it may be essential to give the mother medications to act on the baby (Belmont, 1998). Summary A fetal heart defect is an abnormality in any part of the heart that is present in an unborn child. Approximately 35,000 infants are born with heart defects each year in the United States. An echocardiography can be used before birth to accurately identify many heart defects. The mother can be treated with medications that may restore normal heart rhythm in the fetus if the test shows that a fetus’s heart is beating too fast or too slow. In most cases, scientists do not know what makes a baby’s heart develop abnormally, but genetic and environmental factors appear to play roles.

Sea Water Injection System

Sea Water Injection System In order to improve the oil recovery in an oil field the injection of sea water is used to increase the pressure inside the reservoir and enhance the oil production. The graph given in Figure 1 is a typical seawater injection system, before the injection process, water must have a treatment to decrease the corrosion rate caused by seawater in pipe lines, surface and downhole injection equipments. The treatment is based in a mechanical de-aeration process and chemical scavenger injection to decrease the concentration of oxygen in seawater. Figure 1. Seawater Injection System In a normal operation of the seawater injection system the conditions of the process are 150,000 barrels per day, pipe diameter of 8 inches at 25  °C, however in terms of corrosion parameters the data is provided in table 1, this table shows that the mechanical deaeration process reduce the most quantity of Oxygen concentration in seawater. Table 1. Concentration of Oxygen in normal operation Concentration of O2 in different Units PPB mg/l mole/m3 Feed Seawater 7,000 7 0.22 After mechanical de-aeration process 100 0.1 0.003 After scavenger dosage 10 0.01 0.0003 With the data provided, the corrosion rate in normal operation condition is 0.0454mm/year (the calculation step by step including unit conversion are shown in the appendix) hence the corrosion rate is far less than the company acceptable value which is 0.1 mm/year, and it means that the system is working properly. It has been found that the mechanical de-aeration equipment requires repair, and it will be out of operation for between one and three months. Water system Injection without a mechanical de-aeration process: Calculating the limit current density with the following equation: Concentration of Oxygen only with the addition of Scavenger dosing = 6.910 ppm K is the mass transfer coefficient and it calculations and unit conversions are shown in the appendix. Calculating the Corrosion Rate: Assuming the main component of the pipe Iron therefore n= 2 M= 55.84 g/mol Density: 7.87 g/cm3 Now we can compare the corrosion rate of each case and determine the implications of operating the system without the mechanical de-aeration. Hence the corrosion rate will increase 502 times without the mechanical de-aeration. Based on this result it is obvious that the most important process for oxygen removal is the mechanical deareation. The company request the assessment in a technically and economically point of view three operational solutions during the repair of the mechanical de-aeration equipment. For the given acceptable corrosion rate less than 0.1 mm/year, a corrosion rate value of 0.09 mm/year was used to calculate the implications of the possible solutions. a. Decreasing the Flow Rate Assuming an acceptable corrosion Rate of 0.09 mm/year, From the equation above we can reach the Current density: With current density we can reach mass transfer coefficient k: Now we can reach the new Sh number: With Sh number we can obtain Re number: This value of Reynolds number means that we are in the transition regime between laminar flow and turbulent flow. Now we can reach the flow rate: From the technical point of view and based on the concepts of fluids mechanics, decreasing the flow volume to 260 barrels per day will generate a laminar flow (Re less than 3000) on the pipe, in other words it means that the velocity will not be in the required optimum range of 1.5 m/s to 2.5 m/s, according to Streeter. Doing the calculations the velocity will reach a very slow value of 0.014 m/s in the pipe, which is by far lower than the minimum value of 1 m/s. Therefore technically, the reduction of flow rate to reach an acceptable corrosion rate is not a possible solution. In addition, this kind of diminution of the flow rate (577 times lower than the original) would have impacts on the oil well. Specifically, it would not be able to maintain the pressure at the desired level and therefore would have a big impact on oil production leading to money loss. b. Increasing the amount of scavenger Assuming an acceptable corrosion Rate of 0.09 mm/year From the equation below we can reach the concentration of Oxygen that we need to contain in the water in order to have an acceptable corrosion rate Using Sodium sulfate as scavenger the following reaction will proceed: Hence form the stoichiometry of the reaction the relation between the compounds will be 2 moles of Scavenger and 1 mole of Oxygen. Therefore the amount of scavenger Sodium sulfate needed is: => In an injection flow rate of 150,000 bbl/day Based on scavengers calculations we need to provide the system with a high amount of scavenger to reduce the oxygen concentration that gives an acceptable corrosion rate, it is up to 1.3 ton per day, it is nearly 80 times more than amount of scavenger used in normal operation, which is about 17 kg per day. On the economically point of view, if the scavenger will substitute mechanical de-aeration for a month, the need of scavenger will be approximately 40 ton per month. By using the commercial price of scavenger 0.64 USD/kg (https://www.icis.com), it will cost around 832 USD/day and scaling it to a month it will cost nearly 24,960 USD/month. c. Corrosion Inhibitor Corrosion inhibitor compound will reduce the corrosion rate by preventing both anodic and cathodic reactions. Anodic inhibitor will be adsorbed onto metal surface to form protective film and prevent metal dissolution while cathodic inhibitor will minimize O2 reduction reaction by forming non-conducting film on metal surface. And in technical terms it could be the solution of the problem. However, from the calculations, we know that corrosion rate without the mechanical deareation is 22.5 mm/year and the aim is to decrease the corrosion rate below 0.1 mm/year. Based on the corrosion inhibitor risk category that is proposed by Hedges (2000), if the expected uninhibited corrosion rate is graeter than 6 mm/year inhibition is unlikely to provide integrity for the full field life. Therefore corrosion control of the system could not be efficient with a only corrosion inhibitor because of the high requirement of availability. Based on the results of the three possible options, on the economically point of view decreasing the injection flow rate will impact in the production of oil, and decreasing the main product (oil) of the industry it will have terrible effects in the oil company. Therefore in the corrosion engineering point of view the most accurately solution is to increase the amount of scavenger (Na2SO3) in order to reach a corrosion rate of 6 mm/year and then with the addition of corrosion inhibitors the corrosion rate can be reduce to an acceptable value of less than 0.1 mm/year. The dosage of O2 scavenger has to be interrupted for 8 hours per week for the injection of the biocide. During this time if there was not the corrosion inhibitor, the Corrosion rate would be 22.5 mm/yr. but if the Corrosion inhibitor inhibition rate is 98.5% (as from 6mm/yr to 0.09mm/yr), the corrosion rate would be: Therefore the Corrosion rate would be: The Corrosion rate is slightly above the required norm (0.002 mm/yr), but in the worst case scenario, 3 months with no deaerator, due to the fact the Corrosion rate with the mechanical deaerator is 0.0454 mm/yr which is 0.0546 mm/year less than the required standard. So, in a year perspective the slightly more amount of Corrosion will be not significant and the system will work properly. Also, the amount of Na2SO3 needed to reach a CR of 6 mm/year is 905 Kg/day and it will cost around 580 USD/day. Finally, in order to choose the ideal corrosion inhibitor laboratory tests must be performed in the same seawater that will be used. In situ tests would help to assure the quality of the results. Streeter, Victor L. Handbook of fluid mechanics. McGraw-Hill, ed 1 (1961). Hedges, B. (2000) The Corrosion Inhibitor Availability Model, NACE International, Paper 00034. Water system Injection with a mechanical de-aeration process and Oxygen scavenger addition: Considering the water system injection above and the following data we can reach a corrosion rate value in the next steps. Data provided: Pipe Diameter: = 8 inch, therefore the Area A = 50.26 in2 = 0.032429 m2 Volume Flow Rate: = 150000 bbl/d Initial Oxygen Concentration = 7 ppm Concentration of Oxygen After Mechanical De-aeretion = 100 ppb Concentration of Oxygen After Scavenger dosing = 10 ppb Kinematic Viscosity: 1.05 X 10-6 m2/s Schmidt number = 505 Calculation of Re number: Calculation of Sh Number: In turbulent Flow calculation of Diffusion coefficient: From Sh number we can reach the mass transfer coefficient k: Now calculating the limit current density with the following equation: Concentration of Oxygen after mechanical de-aeration and Scavenger dosing = 0.01 ppm Calculating the Corrosion Rate: Assuming the main component of the pipe Iron therefore: n= 2 MFe: 55.84 g/mol à Ã‚ : 7.87 g/cm3 For 8 hours per week, the O2 scavenger dosing is interrupted for biocide to be injected. So, there is an Availability of : => The Corrosion rate at a concentration of 0.1ppm of O2 is: Water system Injection without a mechanical de-aeration process: Calculating the limit current density with the following equation: Concentration of Oxygen only with the addition of Scavenger dosing = 6.910 ppm Calculating the Corrosion Rate: Assuming the main component of the pipe Iron therefore n= 2 M= 55.84 g/mol Density: 7.87 g/cm3 Now we can compare the corrosion rate of each case and determine the implications of operating the system without the mechanical de-aeration. Hence the corrosion rate will increase 502 times without the mechanical de-aeration. Evaluation of the following operational solutions: Decrease the flow rate of water: Assuming an acceptable corrosion Rate of 0.09 mm/year From the equation above we can reach the Current density: With current density we can reach mass transfer coefficient k Now we can reach the new Sh number: With Sh number we can obtain Re number: This value of Reynolds number means that we are in the transition regime between laminar flow and turbulent flow. Now we can reach the flow rate: Increasing the amount of scavenger: Assuming an acceptable corrosion Rate of 0.09 mm/year From the equation above we can reach the Current density: From the equation below we can reach the concentration of Oxygen that we need to contain in the water in order to have an acceptable corrosion rate Using Sodium sulfate as scavenger the following reaction will proceed: Hence form the stoichiometry of the reaction the relation between the compounds will be 2 moles of Scavenger and 1 mole of Oxygen. Therefore the amount of scavenger Sodium sulfate needed is: Hence we need: In an injection flow rate of 150000 barrels per day

Womens Reproductive Rights and Marital Rights :: Womens Issues Compare Contrast

Women's Reproductive Rights and Marital Rights: A Comparison of Twenty Countries As early as 1871, Elizabeth Cady Stanton recognized that suffrage alone would not guarantee women’s emancipation. Rather, she noted that in order for a woman to be a truly equal and independent citizen, she must possess the ability to control her own circumstances. "The pride of every man is that he is free to carve out his own destiny. A woman has no such pride" (DuBois, 1981:140). Through this recognition she acclaimed that women must have the ability to control their own lives, namely the ability to choose and control the uses of their bodies. Yet, in the present world, there exists a dramatic variation from state to state regarding women’s control over their bodies in reproductive and marital issues. Why is it that in countries such as Canada and the United States, women are able to prosecute their husbands for rape, yet in countries such as Sudan, females are genitally mutilated with no recourse; in Brazil, violence against women is difficult to prosecute; and in India many woman have no choice concerning their marriage partner? What accounts for this variation? Is the source of this variation rooted in the political participation of women or does the variation stem from socio-economic modernization? Is bodily control determined by the ideological affiliations of parties within the state? This paper seeks to answer these questions using cross-national data drawn from twenty countries. Three Theories on the Status of Women For a woman, effective control over her reproductive, bodily and marital choices is a prerequisite for achieving choice in other areas of her life. Due to technological advances, reproductive control is possible. However, for this control to become a reality, women need access to information and medical services. Access to these materials is often obstructed by state policies, ignorance, religious restrictions, economic impediments as well as other factors. For instance, in Ireland abortion and abortion counseling are illegal as a result of a constitutional amendment passed in 1983, whereas in Norway women have uninhibited access to abortion (United Nations,1989). The degree of control that a woman possesses over her bodily and marital choices varies greatly from one country to another. According to the literature on women in politics and women in development, a number of variables may account for this cross-national variation in levels of control (Bystydzienski, 1995; Haussman, 1992 ; Hazou, 1992; Kardam, 1991; Leahy, 1986; Meyer, 1987; Scott, 1995).

Legal Provisions Concerned with Business Units :: Business Management Companies Essays

Legal Provisions Concerned with Business Units Our client is in the process of forming a company. She wishes to avoid personal liability upon any contracts she may enter into on behalf of the proposed company. Our job is to design a report to explain the legal provisions concerned with the formation, management and dissolution of business units. The report will identify the relevant legal principles, which can influence the choice of business unit. Explain the differences in the regulatory approach adopted for partnerships and registered companies and describe the procedures for the dissolution of business units. At the end of the report we will advise our client what type of company would be best suited to her needs. There will also be a presentation to go with the report highlighting the main points. 2.TYPES OF COMPANY There are many different types of business unit. Each is formed by a group of people with a common aim. Britain has what is known as a mixed economy where goods and services are supplied by both private and public sector organisations, as shown in the following diagram: Private Enterprise Sole Trader Partnerships Limited Companies Co-operatives Private Public Retail Producer Public Enterprise Public corporations Government Departments Local Authorities The private sector/enterprise is the term used to describe all businesses which are owned by individuals or groups of individuals and run essentially for profit. About half of all trading in Britain is controlled by private sector organisations. The other half known as the public sector/enterprise are businesses which are owned and controlled by the government or Local Authorities and run for the benefit of the country. The sector this report is concerned with is the Private Sector. 2.1 SOLE TRADER This is the oldest, simplest and therefore most common form of business unit. A sole trader is one who conducts their business by themselves either using their own name or a business name. This is somebody who is self-employed and who usually starts a business with capital from their savings or by borrowing from friends or a bank. Capital is the money which every business needs to enable it to set up and operate, for example to buy premises, equipment, stock and pay wages. The main advantage is that you can be flexible. You don’t need to discuss with others (e.g. partners and directors) how you are going to run the business. You also have less paperwork. A sole trader is not necessarily a one-person business and may have many employees or branches. However, the business is owned by one person and it is they who receive the profits. ADVANTAGES DISADVANTAGES - Business affairs can be kept private except for completing tax

Six Major Classes of Nutrients

There are six major classes of nutrients:  carbohydrates,  fats,  minerals,  protein,  vitamins, and  water. These nutrient classes can be categorized as either  macronutrients  (needed in relatively large amounts) or  micronutrients  (needed in smaller quantities). The macronutrients include carbohydrates (including  fiber), fats, protein, and water. The micronutrients are minerals and vitamins. The macronutrients (excluding fiber and water) provide structural material (amino acids from which proteins are built, and lipids from which cell membranes and some signaling molecules are built) and  energy.Some of the structural material can be used to generate energy internally, and in either case it is measured in  Joules  or  kilocalories  (often called â€Å"Calories† and written with a capital  Cto distinguish them from little ‘c' calories). Carbohydrates and proteins provide 17  kJ approximately (4  kcal) of energy per gram, while fa ts provide 37  kJ (9  kcal) per gram. ,[17]  though the net energy from either depends on such factors as absorption and digestive effort, which vary substantially from instance to instance.Vitamins, minerals, fiber, and water do not provide energy, but are required for other reasons. A third class of dietary material, fiber (i. e. , non-digestible material such as cellulose), is also required,[citation needed]  for both mechanical and biochemical reasons, although the exact reasons remain unclear. Molecules of carbohydrates and fats consist of carbon, hydrogen, and oxygen atoms. Carbohydrates range from simple  monosaccharides  (glucose, fructose, galactose) to complexpolysaccharides  (starch).Fats are  triglycerides, made of assorted  fatty acid  monomers  bound to a  glycerol  backbone. Some fatty acids, but not all, are  essential  in the diet: they cannot be synthesized in the body. Protein molecules contain nitrogen atoms in addition to carbon, ox ygen, and hydrogen. The fundamental components of protein are nitrogen-containing  amino acids, some of which are  essential  in the sense that humans cannot make them internally.Some of the amino acids are convertible (with the expenditure of energy) to glucose and can be used for energy production, just as ordinary glucose, in a process known as gluconeogenesis. By breaking down existing protein, some glucose can be produced internally; the remaining amino acids are discarded, primarily as urea in urine. This occurs normally only during prolonged starvation. Other micronutrients include  antioxidants  and  phytochemicals, which are said to influence (or protect) some body systems.Their necessity is not as well established as in the case of, for instance, vitamins. Most foods contain a mix of some or all of the nutrient classes, together with other substances, such as toxins of various sorts. Some nutrients can be stored internally (e. g. , the fat soluble vitamins), wh ile others are required more or less continuously. Poor health can be caused by a lack of required nutrients or, in extreme cases, too much of a required nutrient. For example, both salt and water (both absolutely required) will cause illness or even death in excessive amounts.