Importance Of Employee Productivity

Importance Of Employee Productivity Abstract Employee productivity is very important for the success of the company in todays global competitive environment. Organizations now realized that key asset is the human capital. Employees get stress in the working environment and this slows down their productivity. There are different factors like poor air quality, open space, noise pollution, temperature, lighting, interior together effect the productivity of employees. The objective of the repot is to increase the productivity in the workplace with a particular focus on the design and interior of the office. The design of the office gives solution to all the elements which contribute in the slow productivity of employees. Environmentally responsible material and furnishings were selected to protect the health and well-being of both employees and global ecosystems. Introduction This is the era of globalization. The business environment in America is growing by giving tough competition to each other in all aspects (Marilyn, 2001). To stay in the market and deal with these changing trends, the organization or firms are focusing on internal operations like productivity, team work, and resources. They now realized that their key asset is human capital. Around 50% of North Americans work in offices, and a large percentage of these work in open-plan offices. Because people spend up to 90% of their time indoors, and much of it in their workplaces, the physical environment in offices should be carefully designed and managed. The physical conditions that tenant experience are important determinants of satisfaction, comfort, well-being, and effectiveness. Changes in modern business practices have considerably changed the way we work in the office (Kate Charles etal). When doing modern knowledge work, employees are required to analyze and integrate complex information , create new ideas, learn new skills continuously, and work in collaboration with colleagues. According to Marilyn (2001) the employees recognized their power and are now searching for new ways of giving their maximum productivity. Companies have come to realize the importance of comfort in the workplace environment in order to retain quality personnel, increase productivity, and maintain a competitive edge (Luparello, 2004). It is very important to increase comfort level of employees in order to increase profit for organization, firm and corporations. Another study was done by Ernesto (1997) in which he analyzed that on an individual level, most people experience some degree of stress in their daily lives and in their workplaces. To deal with this growing problem of work-related stress, employers must identify the specific sources of stress and take clear measures to address them (Allie, 1996). Good workplace design can make a big difference in staff satisfaction, attraction, motivation, and retention. It can also affect the level of knowledge and skills of workers, how innovative and creating they are, and how they respond to business and technological change. Poor workplace design, by contrast, is linked to lower business performance and higher level of stress experienced by employees (Amble, 2005). Vangen (1999) notes that the design of the workplace may be a significant driver in reducing employee stress. Consequently, by addressing such issues as poor acoustics, poor lighting, and poor indoor air quality, employers can go a long way towards reducing workplace stress. Karen (2004) during his research noticed that companies will look toward designs that will provide, open, technologically advanced, flexible, comfortable, and secure spaces-all the necessary components to attract and retain high caliber employees and maximize productivity. Welch (1996) focused on stress re duction issues. There are numerous, well-studied strategies that employers can apply, including anti-stress seating zones, ergonomic furniture, physical fitness centers (DiNubile Sherman, 1999). Knisley (2005) gave the idea that lighting level must be separated for individual workstation so they can perform better. However, it is important to note that this area of study is still in its relative infancy, and there is much research to be done on the subject (Beehr, 1998). An office building must have flexible and technologically advance working environment that are safe, healthy, comfortable, aesthetically pleasing, and accessible. It must be able to accommodate the specific space and equipment needs of the tenant. Special attention should be made to the selection of interior of the office. Karen (2004) during his research noticed that companies will look toward designs that will provide, open, technologically advanced, flexible, comfortable, and secure spaces-all the necessary comp onents to attract and retain high caliber employees and maximize productivity. Aims and Objectives The core objective of this repot is: To increase the productivity in the workplace with a particular focus on the office design. To explore interior design techniques that may reduce employee stress and enhance productivity while using environmentally responsible materials and furnishings Justification It is very important to understand the work place environment where workers are exposed to stress. Therefore, all the workers involved in the business are the major constituent of an organization. As the time passes workers gain experience and became more important tool of the organization. It is evident from different researches done in past that poor working environment is one of the cause of stress. It is very important to give them healthy work environment so they remain more useful for longer period. Office design has a direct correlation with high efficiency of workers. According to a report by the Rocky Mountain Institute in Boulder (Training, 1997), employees could do a much better job if employers paid attention to the work environment. Factors increasing workers productivity The following factors will reveal the way in which the physical, technological, and logical systems work together to promote work process and increase employee productivity while decreasing their stress: Open space and productivity Nowadays, there is a blurring of the hierarchy in the organization, and people are working in a more collaborative environment. Evidence abounds that a more open environment can facilitate team members contributions to productivity. Work spaces are designed to increase informal interaction, not just to save cost and space (Wah, 1998). One of the ways to enhance an open environment and increase interaction between employees is by using the cubicle, which was introduced in the 1970s. However, one problem with using a cubicle is that employees may feel some level of stress due to lack of privacy (Bencivenga, 1998). At the same time, the need for occasional privacy can be accommodated in a variety of ways: separate telephone rooms, conference rooms, and glass walls that can be shaded if necessary (Asirvatham, 1999). Indoor air quality In practical terms, poor air quality can make it harder to concentrate and work effectively leading to symptoms such as headaches, drowsiness or eye, nose or throat irritation. The indoor air quality is determined, to a large extent, by the buildings ventilation system. Researchers have recorded that approximately one third of all employee sick leaves are due to symptoms caused by poor air quality (Mendell et al, 1999). A single source of contamination, in the form of a contaminated carpet, was found to have a marked impact on the typing speed and error rate of occupants in an office building (Wargocki et al, 2002). Evidence indicates that, while the physical attributes of the workplace such as air quality and lighting can have an impact on the productivity of occupiers, it has been known for some time that what might be termed the psychosocial aspects of the working environment can also be significant contributors (or inhibitors) towards greater productivity. These aspects may relat e to the ability to interact with colleagues, the degree of social equity and community in the workplace and the provision of a stimulating visual environment. Access to windows and view, opportunities for interaction and control of ones immediate environment are some of the factors that contribute to improved workplace satisfaction. A substantial portion of the US population suffers from communicable respiratory illness, allergy, asthma symptoms, and symptoms of sick building syndrome. There is evidence that changes in the building design, operation, and maintenance can significantly reduce these illnesses. A decrease in these health problems would lead to lower health costs: a reduction in sick leave, and shorter periods of illness, which might increase work productivity. These benefits can be economically translated into billions of dollars (Fisk, 2000). Lighting Daylight provides important benefits to workers, including better visual acuity, a connection to nature, and enhanced productivity (Means, 2002). According to the Steelcase Workplace Index survey (released Dec. 1, 1999), 56% of the office workers responding said that poor lighting in the workplace caused them tired or watery eyes, while another 30% said it caused headaches Therefore, daylight was used throughout the office to promote productivity. In addition, a combination of indirect and direct electrical lighting was used to provide an even, glare-free ambiance, while task lighting was added to increase light levels for specific tasks (Steffy, 2002). Slater (1984) found that task lighting had the greatest impact on performance compared with down lighting and side lighting. The design of office environments must place emphasis on providing each occupant with access to natural light and views to the outside. Knisley (2005) found that in todays dynamic workplace, employees are shifti ng among a variety of tasks during a typical day. A high light level is needed for reading documents with small text, a medium light is more appropriate for meetings, and an even lower level is required for keyboard tasks on a computer. In addition, each employees personal light requirements may differ based on age, vision, or preference. The open office area would have pendant ambient lighting that would provide primarily indirect lighting but also some direct lighting to create an even, glare-free environment. In addition, task lighting will be added to each desk as needed. Lighting in conference rooms would be manually dimmable to provide light adjustment that supports different activities. Accent lighting will be installed to emphasize certain decorative features on the walls. In addition, daylight sensors would be installed to control electrical lighting level based on daylight contribution and thereby maximize efficiency. The following discusses some specific solutions for the lighting: In addition, a study conducted by the Commission for Architecture the Built Environment and the British Council for Offices found that even simple things such as good lighting and adequate daylight can reduce absenteeism by 15 per cent and increase productivity by between 2.8 per cent and 20 per cent (Amble, 2005). Windows have also been found to play an important role in employee stress. There is a relationship between lack of windows in the workplace and employees feelings of job dissatisfaction, depression, and tension. A view of natural elements such as trees, vegetation, plants, and foliage was found to buffer the negative impact of job stress (Leather Di Beals, 1998). Control noise levels. Cooper, Dewe, and ODriscoll (2001) suggest that poor noise conditions can have a severe impact on a workers physical health and psychological well-being.Unpredictable noise has been found to increase arousal levels but such noises also require more attention and cause distraction. Telephones ringing, doors banging, mobile phones ringing and coworkers shouting across the room could all be termed unpredictable noise, unless they occur with such frequency as to become the norm. Technical Connectivity Technology has become an indispensable tool for business and industry. Given that technology is driving a variety of changes in the organizational and architectural forms of office buildings. The design made must include easy access to this technology. Temperature It should not be too surprising to learn that performance levels of workers, whether in the office or factory environment, drop off when it gets too hot or too cold yet that is the finding of many research projects conducted over extended periods of time. In other words, there is an optimum temperature or band of temperatures to maximize performance. This is true particularly when considering the effects of temperature on physical performance although the link is less evident when considering effects on mental performance. To put it another way, the band of temperature that secures optimum mental performance is wider. Despite this finding, building management systems are typically operated to achieve a narrow spread of acceptable temperatures in the office environment. Wyon (1974) found that typewriting speeds were approximately 40-50% slower when temperatures rose from 200C to 240C. In a later study, Wyon et al (1979) concluded that certain office-based tasks can be improved by tem peratures up to 260C. Interestingly, when other tests were performed (assessing creativity, spelling, vocabulary and manual dexterity), the researchers found no material difference in performance as the temperature levels changed within a broad range. What the above research shows, if anything, is that the ideal temperature for a specific office-based activity may not be ideal for another activity or, occupiers are more resilient than is imagined and can cope adequately with a range of temperatures The vast majority of health research has focused on Building Related Illnesses (BRI) and the relationship to indoor air quality and the thermal environment. Occurrences of Building Related Illness can be very costly to an organization, especially when symptoms are associated with reduced work performance, absenteeism, or temporary abandonment of the building. Not surprisingly, one of the driving forces behind the sustainable design movement is the improvement of indoor air quality Use mobile furniture Adjustable and mobile furniture is a good option for growing businesses with limited space; you can easily reconfigure cubicles and workstations and rearrange your office to accommodate growth, partition departments, or separate equipment areas and other noisy parts of the office. Mobile furniture was selected to provide flexibility in accommodating team meetings and gatherings of different sizes and to adjust more easily to future changes (Sterk, 2005). The furniture should be extremely durable to avoid early replacement Relaxation, and exercise rooms An important component of stress management programs is relaxation centers that are analogous to fitness centers (Ernesto, 1997). The purpose of these facilities is to provide employees with an area, equipment, and qualified staff to encourage learning and practicing stress management and relaxation techniques. Special relaxation rooms are also mentioned by Stevens (2001). These rooms are totally enclosed and soundproof Therefore, the design strategy included support spaces such as meditation, exercise, and relaxation rooms. These rooms would provide employees with comfortable, stress-free venues to enhance creativity and productivity. The meditation room would have a view to the outside landscaping as suggested by Leather Di Beals (1998), who found that a view of natural elements such as trees, plants, and foliage could buffer the negative impact of job stress. Both the meditation and relaxation rooms would also be insulated and soundproof to limit noise distractions. Conclusion Based on the research cited in this study, it is clear that the stress levels, health, and productivity of people in their workplace can be greatly influenced by the environment and physical work space they occupy on a daily basis. It is important to continue to educate the business community regarding the direct benefits of providing an improved work environment. Good working environments can help employers recruit and retain well-qualified employees, and any improvements in the well-being of employees are in the best interests of the employers themselves. Before embarking on a design project, the designers must review the literature to identify the design theories and research that will guide design decisions (i.e. researchbased design). In this project there were two areas of interest: 1). reducing stress among employees and 2). Creating greater productivity for the company. Of equal importance is the need to educate the community about the benefits of using environmentally respon sible furnishing and finishing materials, which are now widely available. Increased use of these materials not only benefits the individuals in the workplace, it contributes to protection of global ecosystems. The research that supports this study suggests that a company that provides a well-designed work environment not only enhances the wellbeing of its employees but also increases productivity and may ultimately reduce its healthcare costs. Furthermore, it will set an example in the community as an environmentally responsible employer and member of that community. Recommendations An outcome of the research includes a series of recommendations targeted the designs of work place. Hire professional designers or engineers to ensure compliance with safety standards and codes. Provide designs in accordance with good practice as well as applicable building, fire, health codes and regulations. Conduct preliminary hazard analysis and design reviews to eliminate or mitigate hazards in work place. Provide engineering controls in place rather than rely on personal protective equipment or administrative work procedures to prevent mishaps. To reduce auditory distractions, put fax machines, copiers and other noisy office equipment in a separate area surrounded by cubicle walls Try to keep noisier employees, such as customer service representatives or salespeople who spend a lot of time on the phone, away from those who require quiet work spaces. Consider using panel systems, carpeting and ceiling tiles to absorb sound and provide privacy. During the planning stage, identify all necessary technological systems (e.g., voice/cable/data systems such as audio/visual systems, speaker systems, Internet access, Consider and accommodate for wireless technologies

Research question †How many molecules are there in a liquid drop? Essay

Variables – Independent variable – The nature of the liquid drop. Dependent variable – Mass of liquid drop. Constants – * Concentration of the liquids * The volume of a drop * Temperature of the liquids Hypotheses and prediction – The heavier the liquid used i.e. a liquid with a high relative molar mass, the more the number of molecules per drop. I predict this as the RMM (relative molar mass) is the measure of the mass of molecules that make up a mole of a substance, and hence the higher the mass is, the more the number of molecules there have to be. Thus, the liquid would have more number of molecules per unit volume as compared to one with a lower RMM, keeping in mind the same concentration is taken. Apparatus – 1. Measuring scale, in grams (à ¯Ã‚ ¿Ã‚ ½ 0.01 g) 2. Dropper 3. Beaker, 50 ml 4. Distilled water 5. Glycerine 6. Ethanol 7. Ethylene glycol 8. Tissue paper Methodology – 1. We collected the apparatus needed and measured the mass of the 50 ml beaker. We called it m1. 2. Using a dropper, we put 20 drops of water in the beaker. We measured the mass of the beaker + water, and called it m2. The mass of the 20 drops of water was found by subtracting m1 from m2. The answer was divided by 20 to find out the mass of one drop of water. 3. We repeated step 2, with water, using 40, 60, 80 and 100 drops. This made the experiment more accurate i.e. gave a more precise mass of the water drop. 4. then, we repeated steps 3 and 4 with the three other liquids – ethanol, glycerine and ethylene glycol. 5. Values were noted down. Further calculations were made using the mole equation – Number of moles = And, also using Avogadro’s constant, where the number of molecules in one mole of a substance is 6.023 à ¯Ã‚ ¿Ã‚ ½ 10à ¯Ã‚ ¿Ã‚ ½Ãƒ ¯Ã‚ ¿Ã‚ ½. Controlling, varying and monitoring the variables – > The independent variable was varied by using not one, but four different types of liquid. These were – distilled water, glycerine, ethanol and ethylene glycol. These liquids have different relative molecular masses. > The change of the dependent variable were monitored by using a measuring scale to observe the change in the masses of the same number of drops when different liquids were tried. > The controlled variables were kept constant:- (a) All the four liquids had the same concentration of 1 mol/dmà ¯Ã‚ ¿Ã‚ ½. This was necessary as a change in the concentration produces a change in the number of moles of the liquid in the drop. (b) The drops were all of the same sizes, and hence of the same volume. the volume was kept constant by using the same dropper for each trial, and furthermore, by applying the same pressure (from the fingers) to the bulb of the dropper. (c) The temperature of the liquid was necessary to keep constant as even trivial changes in temperatures can make a liquid expand or contract, changing its volume. The experiment was carried out at room temperature, for all trials. The temperature of the surroundings was unchanged throughout the experiment i.e. the temperature of the air conditioner was not altered. Collecting relevant and sufficient data – Before the experiment, several trials were executed in order to get a gist of the experiment and recognize and amend any errors. Examples of errors include applying different amounts of pressure on the dropper bulb, giving us drops of different volumes. We also noticed that sometimes, more or less drops were added than needed, due to not observing well or counting the number of drops being put into the beaker carefully. We corrected this by paying more attention to the number of drops being put into the beaker. These errors were made right and taking trials before the experiment ensured we had a more precise, accurate and relevant experiment. We also decided to take the mass as the dependent variable, instead of volume, as we were provided with a measuring scale which was much more accurate (à ¯Ã‚ ¿Ã‚ ½ 0.01 g) as compared to even the most accurate measuring cylinder (10 ml, à ¯Ã‚ ¿Ã‚ ½ 0.1 ml). This reduced the overall uncertainty of the equipment used and hence the general error of the experiment, and made the data more relevant and certain. On the other hand, it was made sure sufficient data was collected as we took five different trials (20, 40, 60, 80 and 100 drops) for each of the four liquids, just to average it down and get the mass of one drop (for each liquid). Furthermore, we measured the masses of high numbers of drops ex:- 60, 80, 100 drops etc. as the higher the number of drops, the lesser the error uncertainty. The standard deviations of the averages of each set of drops has not been calculated, as it isn’t the final value needed (i.e. the average mass of one drop is the final value needed). I have rounded off those averages to three decimal places (instead of one) as the values are very small. The average mass of one drop has been rounded off to the same number of places as the standard deviation, that is two significant figures. The calculations are shown on the following page. Calculations – * The averages have been calculated the following way:- For example, taking the values for water = = = = 0.0634 = 6.3 à ¯Ã‚ ¿Ã‚ ½ 10à ¯Ã‚ ¿Ã‚ ½Ãƒ ¯Ã‚ ¿Ã‚ ½ (to one dp) * The standard deviation for the averages have been found out in the following way:- 1. First the average of the values have been found. Taking the example of the values of water the average is 6.3 à ¯Ã‚ ¿Ã‚ ½ 10à ¯Ã‚ ¿Ã‚ ½Ãƒ ¯Ã‚ ¿Ã‚ ½ g (0.0634 g). 2. Then, the difference between each reading and the average was found. That is: 0.058 – 0.0634 = -0.0054 0.059 – 0.0634 = -0.0044 0.065 – 0.0634 = 0.0016 0.067 – 0.0634 = 0.0036 0.068 – 0.0634 = 0.0046 3. Next, these differences were squared (in order to remove any negative signs): (-0.0054)à ¯Ã‚ ¿Ã‚ ½ = 2.916 à ¯Ã‚ ¿Ã‚ ½ 10à ¯Ã‚ ¿Ã‚ ½5 (-0.0044)à ¯Ã‚ ¿Ã‚ ½ = 1.936 à ¯Ã‚ ¿Ã‚ ½ 10à ¯Ã‚ ¿Ã‚ ½5 (0.0016)à ¯Ã‚ ¿Ã‚ ½ = 2.56 à ¯Ã‚ ¿Ã‚ ½ 10à ¯Ã‚ ¿Ã‚ ½6 (0.0036)à ¯Ã‚ ¿Ã‚ ½ = 1.296 à ¯Ã‚ ¿Ã‚ ½ 10à ¯Ã‚ ¿Ã‚ ½5 (0.0046)à ¯Ã‚ ¿Ã‚ ½ = 2.116 à ¯Ã‚ ¿Ã‚ ½ 10à ¯Ã‚ ¿Ã‚ ½5 4. These squares were then added, and the sum was divided by (n – 1), where â€Å"n† is the number of values. = 2.13 à ¯Ã‚ ¿Ã‚ ½ 10à ¯Ã‚ ¿Ã‚ ½5 5. Finally, the square root of this number gives the standard deviation of the average: = à ¯Ã‚ ¿Ã‚ ½ 4.615 à ¯Ã‚ ¿Ã‚ ½ 10à ¯Ã‚ ¿Ã‚ ½Ãƒ ¯Ã‚ ¿Ã‚ ½ However, this value is always rounded off to one significant figure (hence, so is the average value) giving – à ¯Ã‚ ¿Ã‚ ½ 0.2 s. 6. This method was used to get the standard deviation of the rest of the four averages as well. * The number of moles of the liquid contained in the drop was calculated by the formula = Number of moles = . The relative molar masses of the four liquids were taken from literature values – Water – 18 ; Glycerine – 92 ; Ethanol – 46 and Ethylene Glycol – 62. (www.wikipedia.com) * The number of molecules present in the drop was found out by using Avogadro’s formula which states – Number of molecules = Number of moles of the substance à ¯Ã‚ ¿Ã‚ ½ (6.023 à ¯Ã‚ ¿Ã‚ ½ 10à ¯Ã‚ ¿Ã‚ ½Ãƒ ¯Ã‚ ¿Ã‚ ½) Data processing – Graph 1 – This graph shows us two things – the mass of the liquid drop as well as the number of molecules each drop contains – of four different liquids, which are placed on the X axis. Comparing this graph, and literature values, we can see there is an indirect relationship between the mass of the drop and the number of molecules. This relationship is most importantly affected by the relative molar mass (RMM) of the liquid. A higher RMM means a lesser number of moles in a given volume, as is seen in the case of glycerine, where the number of molecules is seen to be relatively lesser when compared to its mass; and other values. This means that glycerine’s molecules are heavy, large or more dense. Whereas in the case of water, the number of molecules is seen to be much higher as compared its mass – which suggests that water has a lower RMM, relatively, and hence is â€Å"lighter†, or smaller, on the whole. This graph also shows us anomalous results regarding the mass of the ethylene glycol drop. Technically, the ethylene glycol drop should have a greater mass as when compared to ethanol, as it has a greater RMM (value got from literature data) and a lesser number of molecules. This could have been due to errors in the volume of the liquid drop (for example), which have been explained in the evaluation. Conclusion – Thus, we can conclude by stating that the hypothesis has been proved wrong i.e. as the relative molecular mass of a liquid increases, or the mass of the liquid drop increases, the number of molecules it contains decreases. This is because the relative molar mass is a measure of the mass of one mole of a substance (relative to 1/12 of the mass of carbon 12), and one mole of any substance consists of the same number of molecules – 6.023 à ¯Ã‚ ¿Ã‚ ½ 10à ¯Ã‚ ¿Ã‚ ½Ãƒ ¯Ã‚ ¿Ã‚ ½. However, one mole of a substance may differ in mass from one mole of another substance. This is solely because of the mass of the particles contained in that one mole of the substance. A compound which has i) many atoms ii) heavy atoms (in one molecule), will have a higher relative molar mass than a molecule of a compound which has lesser atoms or lighter ones (or both). In this experiment, we are not measuring the number of molecules in one mole of these for substances, but in one drop. hence, the volume remains constant here. Thus, the only way a drop of a substance (of the same volume as the other three drops) will have more number of molecules than any other will be by the liquid having a lower RMM, so that more number of particles would fit in that drop. Taking the example of water, its mass is relatively lower as compared to the number of molecules it contains. This simply suggests that a water molecule will either have lesser atoms, or lighter atoms, or both. On the other hand, the molecule of glycerine is fairly heavy, with an RMM of 92 (whereas the RMM of water is 18) and we can see by the graph that the number of molecules it has is relatively lower than that of water’s however the mass of the drop is higher than that of water’s. This shows that glycerine molecules are heavier than water molecules. Thus, as the mass of the drop increases, the number of molecules it contains decreases. Errors and observations – > Glycerine doesn’t dissolve in water, hence it was difficult to clean the dropper and the measuring cylinder containing it. > Ethanol, being an alcohol, was volatile. Thus, it easily evaporated. This could have been the reason why the mass of the ethanol drop was lower than expected. > Any slight changes in the room temperature would have caused an error to the volume of the drop, since it is so small in volume, ex:- opening of the laboratory door, changing of the temperature of the air conditioner, opening of the windows. However, it was made sure as far as it could to avoid these changes. > The same dropper was used for each liquid, in order to try to maintain the volume of the drops. This could have resulted in the liquids mixing up, hence altering the mass values. > Minute air particles like dust and dirt could have affected the experiment by changing the mass of the drops. > The readings taken towards the end of the laboratory session were slightly heavier (due to some liquid still remaining in the instrument). > The angle with which the dropper was held made a difference to the size of the drop i.e. if the drop was held vertically, the drops flowed faster and were heavier. Whereas if the dropper was held more horizontally, the speed of the flow of the drops was slower and the size was smaller. > After filling the dropper, the first drops were slightly heavier as compared to the last ones due to the extra pressure being applied to them from the liquid above. > Air bubbles were trapped in the liquids. > Glycerine had the largest and most viscous drops whereas water had the smallest and least viscous drops. > Sometimes, drops were added to a measuring cylinder which already contained drops, intentionally. For example, if a measuring cylinder had 20 drops of water, 20 more drops were added and then the mass for 40 drops of water was measured. In case there were any errors for the first 20 drops, they could have carried on for the next 20 drops. > The liquids could have been slightly impure, as they were all being used for the same experiment (some could have mixed). This would have made a difference to the mass. Evaluation – 1. In order to clean the glycerine left from the sides of the dropper etc, a substance which dissolves glycerine could have been used, for example alcohol. 2. Since ethanol was volatile, the experiment could have been carried out in an area where there was no straight wind. The ethanol bottle could have been kept shut for most of the time, and the masses could have been taken down quickly. 3. The room temperature could have been well monitored by maintaining a constant temperature (of the air conditioner) and strictly ensuring that the windows or the door weren’t opened. 4. Extra care and hygiene could be taken to ensure that the liquids didn’t mix up. This could be done by making sure that attention is paid to the lab while performing it and the volunteers aren’t distracted. To make sure the dropper was well cleaned for each trial, liquids which dissolved the liquids being used could have been applied. Another way could be to find another dropper with the exactly same diameter as the one being used. This would decrease the errors by a great deal. 5. To ensure dust particles didn’t fall into the liquids, a conical flask could be used. 6. After each trial, it should be made sure that the beaker is cleaned well and wiped well too, by tissue paper. In order to ensure that there is no extra liquid remaining, the mass of the beaker could be checked before adding the drops. 7. One set angle (of the dropper) should be used, for example the dropper could held at approximately 45à ¯Ã‚ ¿Ã‚ ½ to the laboratory surface table for all trials. The pressure applied to the bulb should also be monitored. 8. When the dropper is full, the experiment could be carried out more slowly and the number of drops be carefully monitored. This would make sure that the size of the drops was not too large, and that the number of drops being added to the beaker were carefully monitored. 9. To decrease the number of air bubbles, the bottles which contained the four liquids could be shut for most of the time and not moved around much. It should also be made sure that the dropper was full with sufficient liquid so that there would be very less air bubbles, or none at all. 10. To avoid carry-on errors, each trial could be performed after cleaning the beaker with water and wiping it well with tissue, each time. These would be the improvements I would add to my experiment in case I perform it again. I would also like to use more, different liquids, in order to get a broader idea of the experiment.

Early Onset Of Alzheimer s Disease - 1742 Words

Eaten Alive Dementia is the general term for a decline in mental ability severe enough to interfere with daily life. The most common form of dementia is Alzheimer s. Alzheimer s disease literally eats and attacks the human brain (Overview). It is a progressive disease that causes the brain cells to degenerate and die, which causes memory loss and affects other important mental functions (Mayo). Today in America, over five million Americans are living with Alzheimer s disease and someone develops Alzheimer s disease every 67 seconds in the United States. (Overview). A form of Alzheimer s diseases is early onset. Early onset Alzheimer s disease is defined as someone diagnosed under the age of 65. Early onset is commonly found in people in their 40s and 50s. Five percent or around 200,000 of Americans living with Alzheimer s have early onset form. The only cause known to early onset Alzheimer s disease is genetics (Overview). There are many signs to look for in Alzheimer s disease. The most common signs include: memory loss, challenges when planning and solving problems, confusion with time and place, misplacing items, and having a difficult time completing everyday tasks. A person with Alzheimer s disease will also begin to show signs of poor judgement. Some people withdraw from social and/or work events, which can be a sign of mood and personality change. Risk factors of Alzheimer s include: age, environment, and genetics/family history. 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Karunanidhi Muthuvel - Free Essay Example

Sample details Pages: 2 Words: 649 Downloads: 1 Date added: 2017/09/21 Category Advertising Essay Type Argumentative essay Tags: Political Essay Did you like this example? Karunanidhi Muthuvel is the Chief Minister of Tamil Nadu. He is one of the founder members of Dravida Munnetra Kazhagam, political party in the state of Tamil Nadu. He is also the head of DMK from the death of C. N. Annadurai in 1969 till date. He has been the Chief Minister of Tamil Nadu five times (1969-71, 1971-74, 1989-91, 1996-2001 and 2006-date). He holds the record of winning every election that he fought in his political career spanning over 60 years. He led the UPA inTamil Nadu and Pondicherry to win all the 40 Lok Sabha seats in the 2004 Lok Sabha Elections. He was born in an Isai Vellalar caste as Dakshinamurthy to Thiru Muthuvelar and Thirumathi Anjugam Ammaiyar on June 3, 1924 at Thirukkuvalai in the Tanjore District, (now Tiruvarur) [Tamil Nadu], India. His mother was a temple dancer. Coming from a humble and poor family the clan of Karunanidhi have made it to the top of Tamilnadu politics. He took Over as Chief Minister 13 May 2006 after his coalition defeat ed his main opponent J. Jayalalithaa in the May 2006 elections. He currently represents the constituency of Chepauk in Central Chennai in theTamil Nadu state Legislative Assembly. He has been elected to the Tamil Nadu Legislative Assembly for 11 times and once to the now abolished Tamil Nadu Legislative Council. Karunanidhi began his career as a scriptwriter in the Tamil film industry. He is known for his wit and oratorical skills, qualities which helped his rapid rise as a popular politician. He was famous for writing historical and social (reformist) stories which propagated the socialist and rationalist ideals of the Dravidian movement to which he belonged. Karunanidhi entered politics at the age of 14 inspired listening to a speech by Alagiriswami of the Justice Party by whom he was greatly influenced in 1932 and participated in Anti-Hindi agitations. He founded an organisation for the local youth of his locality. He circulated a hand written newspaper called Manavar Nesan to its members. Later he founded a student organisation calledTamil Nadu Tamil Manavar Manram which was the first student wing of the Dravidan Movement. Karunanidhi involved himself and the student community in social work with other members he would visit the nearby hutments to do all that was possible within his limit. Here he started a newspaper for its members which grew into Murasoli newspaper which is the DMK partys official newspaper. Karunanidhi has been arrested several times in long political career fighting for public causes this including against price increase, Anti-Hindi Agitation, for Eelam Tamils and other political activities. [citation needed]He has been arrested over 14 times. Even in jail he set up a shadow government, and allocated responsibilities to everyone of his cadres. During his periods in jail (he was incarcerated more than seven times between 1953 and 1965), Karunanidhi read and wrote extensively in prison. Karunanidhi led a struggle in a bid was instrumental in the Kallakudi struggle to rename Dalmiapuram railway Station. Karunanidhi was entrusted with the task of organizing the struggle. The cadres were divided into three batches, and Karunanidhi led the batch which lay down on the railway station, blocking the train by putting his head on the rail and made powerful slogan udal mannukku, uyir tamilukku (Body to soil and Life to Tamil) that attracted many to join him. They were promptly arrested, the second group also met the same fate. When the third group lead by Kannadasan took its turn chaos broke, the police resorted to firing leading to the death of two. Karunanidhi was lodged in Thiruchirapalli Central Jail. Karunanidhi was first elected to the Tamil Nadu assembly in 1957 from the Kulithalai assembly constituency in the Thiruchirapalli district. He became the DMK treasurer in 1961 and deputy leader of opposition in 1962 and when the DMK came to power in 1967, he became the minister for public works. When Annadura i died in 1969. Karunanidhi became the Chief Minister. He has held various positions in the Tamil Don’t waste time! Our writers will create an original "Karunanidhi Muthuvel" essay for you Create order