Assignment Example | Topics and Well Written Essays - 500 words - 91

Assignment Example In the opinion of court â€Å"pain and suffering† and â€Å"mental suffering† are core elements of damage. In that regard, they lead to personal injury as well as malicious prosecution cases. Therefore, failure of the insurer to owner the insurance contract caused the plaintiff to suffer emotionally due to the that she was in dare need money to support her family, thus inviting the â€Å"compromise† of her claim. The issue is whether the plaintiff who is the beneficiary of the estate. That is insurance policy cover of her deceased husband suffered any loss after as a result of denial compensation by the insurer on her bide thereof. The court also adopted objective standard to measure the severe emotional distress suffered by plaintiff due to the variation of mental consequences suffered by individuals in justification of their decision. This case is governed by Illinois law as abases in determining the matter at hand in recover the damages suffered by plaintiff due to a sever distress. There are also some cases of this similar which have been handle by the supreme court of Illinois, it now become prudent to make such presumption based on references thereto. The information in paragraph 8 has been organized in way that produce a clear picture in elaborating the issue and facts that would substantiate the matter alleged. The connector; â€Å"as to the reason that† has been used to transition from one element of other parts of the paragraph to another. The California court case of Siliznoff, Crisci, and Fletcher, are very precedence in determining the alleged act of insurer in law of tort. In these cases the judgment was affirmed by the supreme court of California where a damage of $25,000 was paid in compensation of mental suffering caused by insurance company in their refusal to owner the settlement within the limit of the liability policy. The objective of procuring the insurance

The Extraction of Aluminium Essay Example for Free

The Extraction of Aluminium Essay The metal aluminium is a very important to many of the worlds industries how ever it requires a special process called electrolysis to extract it form other metals which is commonly found with. As i mentioned aluminium is an extremely useful metal and has many uses which we depend on in our daily lifes which are any thing from packaging to being used in transportation. This means that we have to to be able to extract aluminium, as it is extremely rare to find aluminium as a free metal. In fact, it is know to combine with over 270 other metals. Extraction is a major problem for aluminium and there is no ideal solution. However there are many not so perfect solutions that are currently being practiced today. In this essay I will look into some of the limitations and benefits of the current extraction techniques. I will also look at some of the economic and environmental effects the extraction of aluminium has. When aluminium is extracted from the other metals it must go through processes called electrolysis. Aluminium is not an easy metal to extract from other metals it is found in nature with, therefore it takes a lot of electricity to extract aluminium. Because it is such an energy consuming processe researchers have found ways to cut down the energy usage by adding different compounds to the aluminium. The most common way to do this is to add molton cryolite to the molton aluminium. With adding molton cryolite to the molton aluminium alone it effectively lowers the temperature needed extract from 2000à ¯Ã‚ ¿Ã‚ ½C to 950à ¯Ã‚ ¿Ã‚ ½C, that is more than a 50% decrease in the required temperature 2. However due to the fact that the oxygen reacts with the carbon positive electrodes this can cause an inconvenience. When oxygen (O) reacts with carbon (C) it forms carbon dioxide (CO2). When the carbon dioxide forms it eats away the positive electrode over time. As the positive electrodes are eaten away they must be replaced on a frequent and regular basis, this is a negatieve inconvenience that further adds to the cost of producing aluminum which is already high form the large amount of energy that is needed 3. In the remainder of this essay I will look at the aluminium electrolysis plant located in Reydarfjordur, Iceland. I will look at some of the environmental and economic consequences of this plant run by Alcoa. When a new plant or factory is created it can either be good or a bad thing and have both positive and negative effects on the economy and the environnent. With this plant in Reydarfjordur it has a great effect on the economy as it brings many new jobs to this not yet developed region of Iceland. In order to build this plant it requires around 1800 temporary jobs. After the plant is in a running and stable condition it will require about 450 people on a daily basis as well as another 300 jobs that will be indirectly created 1. As jobs in the eastern Iceland or Reydarfjordur area have been steadily decreasing over time this will hopefully boost the employment rate and provide jobs for many. When extracting aluminium there is no environmentally friendly solution however many new plants, including the Alcoa plant in Reydarfjordur have much lower emissions than others that are older or less environmentally friendly. The new plan for the Alcoa plant in Reydarfjordur has significantly lower emission rates than other Alcoa plants which are all within local standards. Alcoa claims they are a large supporter of sustainable development and for this plant alone they have over 60 experts looking in to and implementing ways to preserve our environment. This new factory meets and exceeds all European Union and Icelandic emissions requirements, this is the first step to creating a sustainable plant. In fact, a recent study regarding this factory shows Alcoa factory located in Iceland had 35% lover CO2 emissions than other leading aluminum plants. As well as having lower CO2 emissions they also boast 40% less PFC emissions and a 80% lower nitrogen oxide emissions 1. Bibliography: 1. Alcoa. Acoa. 2 Feb. 2008 http://www.alcoa.com/iceland/en/info_page/reydarfjordur.asp. 2. Various. Alumiumum. Wikipedia. 1 Feb. 2008. 2 Feb. 2008 http://en.wikipedia.org/wiki/Aluminium. 3. Extraction of AL. BBC. 2 Feb. 2008 http://www.bbc.co.uk/schools/gcsebitesize/chemistry/usefulproductsrocks/electrolysisrev3.shtml.

Vegetable Oils Determining Degree Of Unsaturation And Viscosity Biology Essay

Vegetable Oils Determining Degree Of Unsaturation And Viscosity Biology Essay Oil is an integral part of everyones life. Life without oil is not possible, especially in cooking. But there is a limit to which how much oil can be used for the purpose of cooking. The health factors have to be considered. There are different types of oil that are used for cooking and eating purposes. But how many of them are actually safe for health? How many of them do not cause any health problems like high cholesterol etc which in turn leads to diseases like heart attacks? This topic is definitely worthy for investigation because a lot can be found out by determining the iodine number of different oils. For example, the degree of unsaturation is the main thing that can be found out by performing the experiment of Iodine Value. From the degree of unsaturation, we can determine the boiling points of the oils and their effect on the human body. Though my experiment is only for four oils, namely, mustard oil, olive oil, coconut oil and canola oil, there is great scope for investigation even in these oils. The main purpose of this investigation is to establish the relationship between the degree of unsaturation in the oil and the viscosity of the oil Vegetable or Cooking oil is used on an everyday basis. Vegetable oil is purified fat of plant origin which is liquid at room temperature.There are many different kinds of vegetable oils, some of them are: Olive oil, Sunflower oil, Soybean oil, Sesame oil, Coconut oil, Peanut oil, Corn oil etc. Fats and oils are esters of triglycerols and fatty acids. When an oil is unsaturated, it means that the fatty acids consist of a long chain hydrocarbon that have carbon-carbon double bonds. The degree of unsaturation can be determined by finding out the amount of mass that is used to overcome the carbon-carbon double bonds.The amount of iodine that reacts is used to find the iodine number of the oil and this is used to indicate the degree of unsaturation in the oil. The higher the iodine number the greater the unsaturation. Unsaturated oils are less stable than saturated oils. They keep less well than the saturated oils. This is because the carbon carbon double bond in the unsaturated oils react with the oxygen in the air. This may lead to discolouration to the surface of the oil, decrease in the nutrient oil and they also lead to rancidity. They are more prone to hydrogenation and to hydrolysis. Oils are very important to our body, they provide energy because they contain proportionately less oxygen than carbohydrates and they release more energy when they are oxidised.They also provide the structural components of the cell membrane. They also help in the production of steroid hormones like progesterone and testosterone. Unsaturated oils are very harmful to health. They damage the immune system, cause hormonal imbalances and many other problems. They pose a major health risk. Unsaturated oils get rancid when exposed to air; that is called oxidation, Free radicals are produced in the process. This process is accelerated at higher temperatures. The free radicals produced in this method react with parts of cells, such as molecules of DNA and protein and may become attached to those molecules, causing abnormalities of structure and function. The greater the degree of unsaturation of the oil, the better it is for the body. This is because, as mentioned above, the greater the degree of unsaturation the lower the melting point. The average body temperature of the human body is around 98.8.F. Any oil below this temperature is extremely good for the body. This is because the oil wont linger in the stomach for a very long time, because if it stays in the stomach for a very long time, then it can make the body sick. Also, oils below this temperature helps in dissolving the fat that is already present in the body instead of further accumulating the amount of fat in the body. These oils do not clog up the arteries and they do not become hostile plaques. If the oil has less degree of unsaturation or is saturated, then it has a higher melting point, this is because the Vander Waal forces are stronger when compared to the oils that have a greater degree of unsaturation. This would require more energy to overcome the intermolecular forces causing a higher melting point. Now, since the oil will have to burn at a higher temperature, the body temperature has to rise to above the average body temperature to that specific temperature. If it does not reach to that particular temperature for the oil to burn, it can cause indigestion and clogged arteries. They help raise a persons high density lipoproteins (HDL). HDL carries cholesterol from the blood back to the liver. The liver then breaks down the cholesterol so that it can be eliminated from the body. This helps the excess cholesterol from being deposited in the arteries. Word Count: 572 EXPERIMENT A- DETERMINING THE IODINE VALUE OF THE OILS Design 2.1.1 Aim: Finding the iodine number to determine the degree of unsaturation of various different vegetable oils Iodine Number: it is the measure of the degree of the unsaturation in oils and fats. It is expressed in terms of centigrams of iodine absorbed per gram of sample( percentage by weight of iodine absorbed) 2.1.2 Apparatus: Iodine Flasks, 250 ml Micro Beaker, I ml Burette, 50 ml Beakers, 250 ml 2.1.3 Chemicals Required: De ionized Water Carbon Tetrachloride Iodine monochloride(Wijs solution) Potassium Iodide solution Starch Solution Aqueous Thiosulphate standard solution 2.1.4 Oils required: Olive Oil Mustard Oil Coconut Oil Canola Oil 2.1.5 Procedure: One 250 ml iodine flask was labeled BLANK and the other iodine flask was labeled SAMPLE A sample of oil was collected in a 50 ml beaker of known weight and was weighed in an analytical weighing balance in order to obtain the weight of the oil to 4 decimal places Subsequently, 20 ml of Carbon Tetrachloride was added to the beaker, stirred and this solution was transferred to an Iodine Flask. 5 ml of Wijs Solution was transferred to the iodine flask using a microbeaker The Iodine flask was covered with an airtight lid and was kept away in the dark for 45 minutes After 45 minutes, 10 ml of Potassium Iodide solution was poured into the lid of the Iodine Flask The lid was slowly raised allowing a minimum air gap to prevent any iodine vapours formed as a result of the previous reactions, thus allowing the Potassium Iodide to drip slowly into the iodine flask 100 ml of water was added to the flask in a similar way and stirred so that the excess iodine was dissolved The solution was then titrated with Na2 ­S2O3 solution and when it turned to a straw color, approximately 5ml of starch solution was added which made the solution turn into a blue-black solution The titration was resumed drop by drop until the solution turned colorless. The volume of Na2 ­S2O3 was noted( both in the beginning of the titration and at the end of the titration) The above procedure was carried out without the oil to obtain the BLANK value The experiment was repeated thrice with the same oil The same procedure was carried out with another sample of oil Calculations Formula for the calculation for the Iodine Value of any oil Where: B Volume of Na2 ­S2O3 required for the BLANK sample S Volume of Na2 ­S2O3 required by the SAMPLE sample S Normality of the Thiosulphate Solution (N) W Mass of the oil taken (g) 2.2 DATA COLLECTION DATA COLLECTION OLIVE OIL Initial Volume (ml) ±0.05 ml Final Volume (ml) ±0.05 ml Reading 1 0 13.9 Reading 2 0 14.3 Reading 3 0 14.1 Volume of the BLANK sample = 28.6 ml Mass of the oil = 0.2407 gm MUSTARD OIL Initial Volume (ml)  ±0.05 ml Final Volume (ml)  ±0.05 ml Reading 1 0 9.4 Reading 2 0 9.1 Reading 3 0 8.9 Volume of the BLANK sample = 28.6 ml Mass of the oil: 0.2527 gm COCONUT OIL Initial Volume (ml)  ±0.05 ml Final Volume (ml)  ±0.05 ml Reading 1 0 26.5 Reading 2 0 27.3 Reading 3 0 26.8 Volume of the BLANK sample = 28.6 ml Mass of the oil: 0.2808 gm CANOLA OIL Initial Volume (ml)  ±0.05 ml Final Volume (ml)  ±0.05 ml Reading 1 0 6.0 Reading 2 0 5.2 Reading 3 0 5.5 Volume of the BLANKsample = 28.6 ml Mass of the oil = 0.2771 gm 2.3 DATA PROCESSING OLIVE OIL Average Values Initial Volume= = 0 ml Final Volume = = 14.1 ml Calculation of the Iodine Value =78.98 MUSTARD OIL Average Values Initial Volume = = 0ml Final Volume = = 9.1 Calculation of the Iodine Value: = 101.2 COCONUT OIL Average Values Initial Volume = = 0ml Final Volume = = 26.9ml Calculation of the Iodine Value: = 9.937 CANOLA OIL Average Values Initial Volume = = 0ml Final Volume = = 5.6ml Calculation of the Iodine Value: = 108.8 Error Propagation Blank Value= 28.6 ml Error in the BLANK:  ±0.05 ml OLIVE OIL: Value of the SAMPLE: 14.1ml Error in SAMPLE :  ±0.05 ml (BLANIK-SAMPLE) = (28.6-14.1) = 14.5 ml Error in (BLANK- SAMPLE) =  ±(0.05+0.05)=  ±0.1 ml Percentage error in (BLANK SAMPLE) = 0.69% Percentage error in mass = 0.02% Therefore % error in Iodine Value: 0.02+0.69 = 0.71 % Value of Iodine Number = 78.98 Error in Iodine Number =  ±0.56 Iodine Number of Olive Oil = 78.98 ±0.56 MUSTARD OIL Value of the SAMPLE: 9.1ml Error in SAMPLE :  ±0.05 ml (BLANK-SAMPLE) = (28.6-9.1) = 19.5 ml Error in (BLANK- SAMPLE) =  ±(0.05+0.05)=  ±0.1 ml Percentage error in (BLANK SAMPLE) = 0.51% Percentage error in mass = 0.02% Therefore % error in Iodine Value: 0.02+0.51 = 0.53 % Value of Iodine Number = 101.2 Error in Iodine Number =  ±0.54 Iodine Number of Mustard Oil = 101.2 ±0.54 COCONUT OIL Value of the SAMPLE: 26.9 Error in SAMPLE :  ±0.05 ml (Blank-Sample) = (28.6-26.9) = 1.7 ml Error in (Blank- Sample) =  ±(0.05+0.05)=  ±0.1 ml Percentage error in (Blank Sample) = 5.8% Percentage error in mass = 0.02% Therefore % error in Iodine Value: 0.02+5.8 = 5.82 % Value of Iodine Number = 9.937 Error in Iodine Number =  ±0.59 Iodine Number of Olive Oil = 9.937 ±0.59 CANOLA OIL Value of the SAMPLE: 5.6ml Error in SAMPLE :  ±0.05 ml (Blank-Sample) = (28.6-5.6) = 23 ml Error in (Blank- Sample) =  ±(0.05+0.05)=  ±0.1 ml Percentage error in (Blank Sample) = 0.43% Percentage error in mass = 0.02% Therefore % error in Iodine Value: 0.02+0.43 = 0.45 % Value of Iodine Number = 108.8 Error in Iodine Number =  ±0.49 Iodine Number of Olive Oil = 108.8 ±0.49 EXPERIMENT B- DETERMINING -THE VISCOSITY OF THE VEGETABLE OILS 3.1 Design 3.1.1 Hypothesis: To determine the viscosity of the following oils: Olive Oil Canola Oil Mustard Oil Coconut oil 3.1.2 Apparatus required: Viscometer 25ml density bottle Weighing balance Pipette 3.1.3 Chemicals Required: Olive Oil- 25 ml Mustard Oil- 25 ml Canola Oil- 25 ml Coconut oil- 25ml Distilled water- 25 ml 3.2 Procedure: Part A: Determination of the Density The oils were added up to the brim of a 25 ml density bottle of a known weight. The bottle was covered using a lid. And the excess oil was dipped off from the side of the lids. The density bottle was then cleaned. The bottle and the oil together were weighed in order to get the mass of the oil that is going to be used in the process of the experiment With the help of this calculated weight and a predetermined volume of 25 ml , the density of the oil could be calculated. The above process was carried out for all the oils and the water as well Part B: Determination of time taken in order to flow down a viscometer A Viscometer consists of a U-Tube with 2 reservoirs. 100 ml of the oil was added to the opening as indicated The oil was then pipetted up on the other side until the lower meniscus reached the level marked as A. It was held at this point by using a finger which covered the opening. As soon as the finger was released the oil flowed down and the at the same time a timer was started. The oil flowed through the reservoir and as soon as the lower meniscus reached the level marked at B, the timer was stopped and the time was noted. The above procedure was carried out for all the other oils and was carried out for water as well With the help of the above data, the viscosity of the oil , relative to the viscosity of the water could be calculated. 3.3 Data Collection and Processing Density of the Samples: Name of Sample Mass of 25ml gravity bottle( ± 0.00005 g) Mass of 25 ml density bottle + sample ( ± 0.00005g) Mass of the Sample ( ±0.0005 g) Density of the sample( Mass of the sample/25) Olive Oil 17.2358 g 40.2675 23.0317 0.9213 Canola Oil 17.2358 g 40.2872 23.0514 0.9221 Mustard Oil 17.2358 g 40.0860 22.8502 0.9140 Coconut Oil 17.2358 g 40.2733 23.0375 0.9215 Water 17.2358 g 42.3569 25.1211 1.0048 Time Taken Name of the Sample Time Taken( ± 0.5 sec) Olive Oil 8659 Canola Oil 6144 Mustard Oil 7628 Coconut Oil 9952 Water 151 Calculations Formula for the calculation of the relative velocity Ã…Å  1 = D1 ÃÆ'- t1 Ã…Å  2 D2 ÃÆ'- t2 Where, Where: Ã…Å  1 = Viscosity of Oil Ã…Å  2 = Viscosity of water Clearly, Ã…Å  1 = Relative Viscosity of Oil with respect to water Ã…Å  2 D1 = Density of oil D2 = Density of water t1 = Time required for the oil to flow between 2 marked points on the viscometer t2 = Time required for water to flow between 2 marked points on the viscometer 3.4 CALCULATIONS From the above observations we can find the viscosity of the oils. Olive Oil = [0.9213  ± (2 ÃÆ'- 10-6)] ÃÆ'- (8659  ± 0.5) = 52.27  ± 0.2 - [1.0048  ± (2 ÃÆ'- 10-6)] ÃÆ'- (151  ± 0.5) Canola Oil = [0.9221  ± (2 ÃÆ'- 10-6)] ÃÆ'- (6144  ± 0.5) = 37.33  ± 0.2 [1.0048  ± (2 ÃÆ'- 10-6)] ÃÆ'- (151  ± 0.5) Mustard Oil = [0.9140  ± (2 ÃÆ'- 10-6)] ÃÆ'- (7628  ± 0.5) = 45.95  ± 0.2 [1.0048  ± (2 ÃÆ'- 10-6)] ÃÆ'- (151  ± 0.5) Coconut Oil = [0.9215  ± (2 ÃÆ'- 10-6)] ÃÆ'- (9952  ± 0.5) = 60.44  ± 0.2 - [1.0048  ± (2 ÃÆ'- 10-6)] ÃÆ'- (151  ± 0.5) ANALYSIS From the above graphs, we see that there is an inverse relationship shared between the degree of unsaturation and the value of the viscosity Unsaturated oils are those that have carbon carbon double bonds because it lacks hydrogen atoms. Poly unsaturated oils are those that contain more than one carbon double bond. They are also called the polyunsaturated fatty acids or PUFAs and sometimes, they are also known as Essential fatty acids The degree of unsaturation can be found out by finding out the amount of mass that is used to overcome the carbon-carbon double bonds.The amount of iodine that reacts is used to find the iodine number of the oil and this is used to indicate the degree of unsaturation in the oil. A carbon double bond consists of one à Ã†â€™ bond and one à Ã¢â€š ¬ bond. à Ã†â€™ bonds are formed by the end on interaction of the electrons in a s-orbital. When they react they produce a bond in which the electron density is at its greatest on the internuclear axis ( imaginary line joining the nuclei) and is symmetric about it. à Ã¢â€š ¬ bond is formed by the side on interaction of the electrons of the p-orbitals at right angles to the internuclear axis. This bond has low electron density on the inter nuclear axis . The electron density for this type of bond is at the highest on the sides opposite to the internuclear axis. The presence of the double bond in the hydrocarbon chain makes the short. And hence there is greater number of electrons causing greater amount of repulsive forces. This is called the Bayers strain. The more the number of double bonds the greater the strain and shorter the length of the hydrocarbon. These types of hydrocarbon chain undergo addition reactions faster when compared to those that are longer with less number of double bonds. When they undergo addition reaction they get relived of the stress and the strain causing the length of the hydrocarbon to expand. Hence, the greater mass of Iodine use, the greater the number of carbon double bonds and greater the Iodine number and greater the degree of unsaturation. Therefore, greater the iodine number greater the degree of unsaturation The carbon in the double bond is sp2 hybridized. Hence the shape is trigonal planar and the molecule comes into one plane. Therefore, the molecules in a double bonded carbon are spaced out. When the carbon bond is saturated, that is, having only single bonds, the bonds are sp3 hybridized. The shape therefore is tetrahedral and hence molecules become spread in two planes. As a result, the molecules become more tightly packed, thus becoming denser. Therefore, lesser the amount of double bonds, the more tightly it will be packed when it becomes saturated and hence it will become more denser. This brings out a relationship between the iodine value, the degree of unsaturation and the viscosity. Greater the iodine value, greater the degree of unsaturation and lower the value of the viscosity. Greater the degree of unsaturation, lower the melting point. This is because in unsaturated oils there are carbon-carbon double bonds. The presence of these double bonds makes the hydrocarbon chain less straight. This weakens the strength of the Van Der Waals forces because there is less contact between the chains. Therefore, greater the degree of unsaturation, lower the melting point. Also, unsaturated oils are less stable than those that are saturated. Therefore, greater the degree of unsaturation, the less stable it is. CONCLUSION From the above experiment and analysis, we observe various number of things. Greater the Iodine value of the oil, greater the degree of unsaturation and lower the viscosity. Using this analysis, we can say that Canola Oil has the highest iodine value, that is, and the least Viscosity value, that is . This means that Canola Oil is the safest to cook and use because it provides a lot of health benefits when compared to the sample of the other oils. Mustard oil, which has an iodine value of and Viscosity value of is the comes second in the four oils that have been used for the experiment. Olive oil, that has an iodine value of and a viscosity value of is not recommended to use because out of the four oils that are were used for the experiment this falls under the third category. Coconut oil is very hazardous for the health because its iodine value is and the viscosity value is. It is recommended not to use coconut oil for cooking purposes. Sources of Error Error might have occurred when transferring the oil from one beaker to another. This might have lead to minor errors occurring in the process of the experiment The analytical balance did measure the mass of the oil to an accuracy of four significant figures, but there were few disturbance like noise and the shaking of the table around the analytical balance that made the digit in the balance to waver between one number to another. There might be some ICl (Iodine Monochloride) left behind when it was transferred from the beaker to the Iodine Flask. After the one hour in the dark, KI was to be added to the iodine flask by opening the lid slowly and making the KI to drip slowly into the flask. During this short period where the lid of the flask was opened, there might have been chances where the iodine vapors could have escaped from the reaction in the Iodine Flask causing errors in the experiment. During the process of titration, there are chances that there was excess amount of Sodium Thiosulphate was added for the color to turn colorless. This might have caused the wrong reading being taken which in turn can lead to the wrong calculation that can increase the difference between the original Iodine value and experimentally calculated Iodine Value While measuring the amount of starch solutions, Wijs solution etc, to be added in the process of the experiment, there are chances of parallax errors that could have caused errors in the process of the experiment There are chances that the apparatus had some tiny unwanted particles that might have been mixed with the other chemicals causing errors in the experiment While measuring the volume of the sodium thiosulphate used for the experiment from the burette, there are chances that there was a tiny difference between the reading that was recorded and the actual reading. The solution f Potassium Iodide was prepared in the lab by diluting the KI powder into water. Therefore, there might have been an error in the diluting the Potassium Iodide like for example, adding extra Potassium Iodide powder or adding extra amount of water. In some of the apparatus, there were readings that were not very clear. This might have caused errors in the experiment. For the experiment to determine the Viscosity of the oils, the experiment had to be carried out in similar atmospheric conditions. There could have been variations in the chemistry lab hence leading to errors in the experiment. Evaluation: To reduce the weighing error, the sample should be weighed repeatedly. This will reduce the random errors caused because of the weighing. This will also give an accurate mass that will reduce the errors in the experiment. While transferring chemicals, care should be taken so as to avoid the chemicals from spilling Repeated measurements could have been conducted while measuring the BLANK value and the SAMPLE value. This would have reduced the random as well as systematic errors that are caused by incorrect readings and unclear readings in the apparatus. The apparatus used in the lab for the process of experimentation should be of good quality so as to minimize the errors and increase the accuracy in the experiment.

How does breastfeeding affect a babys physical development

How does breastfeeding affect a babys physical development Breastfeeding is deemed by many, as being the most important nourishment for a child. Breastfeeding provides a better and more balanced form of nutrition for the babies. Breast milk contains the accurate amount and quality of nutrients that perfectly lay within the babys primary dietary needs (Canadian Paediatric Society). To protect, promote, and keep the practice of breastfeeding alive the following research question is going to be looked at in depth throughout the report; how does breastfeeding affects and aids a babys physical development? There are countless physical benefits of breastfeeding for a baby. However the main focus of this report will be looking at the link to digestion, obesity, and dental health of the child. Breast milk is the best food for babies, the reason being is, it provides the exact combination of fats, protein, vitamins, minerals and enzymes required at various stages of growth of the new born (Kristen Burgess). Along with these features the most important part is that it is easily digestible for an infant (Leena Palande, 2010). A babys digestive system is immature and cow milk and other proteins found in formulas are heavy on the digestive system. Breast milk posses as a less load on the infants digestive system since a babys less developed digestive system requires highly absorbable nutrients. Human proteins are also more digestible as compared to the cow or other proteins that are found in the formula. Breast milk assists in proper maturity of the babys gastrointestinal tract; the stomach and the intestine as a functional unit (Jon Ahrendsen). Breast milk includes a particular protein called immunoglobulin, which operates like a defensive sealant in the digestive tract. Breas t milk also possesses a unique substance known as epidermal growth factor (EGF). It encourages the development of the cells lining in the babys intestines in addition to other surface cells, for instance the cells of the skin. These are some of the qualities of the breast milk which aid to develop the babys digestive track in a health and a strong way. Secondly, studies have found out that there is a reduced risk of being obese, among the breastfed children. Its best results were observed amongst teenagers, which show that the obesity-reducing effect of  breastfeeding  expands numerous years into a childs life. One more research revealed that the threat of becoming overweight was decreased by four percent for every month of  breastfeeding. This influence stables past nine months of  breastfeeding. The protecting benefit of  breastfeeding  is possibly caused through a number of factors. Firstly, infant formula includes approximately twice the amount of protein per serving as breast milk. This surplus quantity of protein might motivate insulin discharge in an unhealthy way. Secondly, the biological reaction to breast milk is different from that of formula. When nourishing a baby, the mothers milk encourages the babys liver to discharge a protein that aids to normalize metabolism (Breastfeeding Medicine). Feeding formula a s an alternative to breast milk, multiplies the babys concentrations of insulin in a persons blood, delays the insulin reaction, and even childhood is linked to the adverse concentrations of leptin, a hormone that slows down the hunger and restrains the body fat. Other than that premature introduction of solids (before 6 months) to the babies might also increase the danger of childhood obesity. Lastly breastfeeding also has one of its significant impacts on the dental health of the baby. Studies have found out that breast milk contains high levels of protecting chemicals and manufactures comparatively little acid in the mouth. Amongst breastfed children, the longer the period of nursing the lower risk of malocclusion; an undesirable relative positioning of the upper and lower teeth when the jaw is closed. Breast-fed kids have an enhanced overall dental health. Ones Breastfed have comparatively well-built teeth which are in good shape as well. They hardly ever require orthodontic work; the region of dentistry worried about the avoidance and correction of irregularities of the teeth, for example braces. In general children who are breastfed possess better dental health than those of formula-fed children (Target Woman). The main reason behind this benefit is the nutrients included in the breast-milk as well as the exceptional sucking action requisite by the breastfeeding. This benefit has a very long term effect on the baby. Breastfeeding reduces the risk of tooth decay. There are fewer chances of cavities  among the breastfed infants. One of the finest treatments for childrens tooth decay requires the mother to continue breastfeeding, at the same time enhancing her diet (American Academy of Pediatric Dentistry). As the babies jaw muscles are energetically exercising while suckling, their steady pulling promotes the development of well-built jaws in addition to straight, healthy teeth.  Suckling at the breast is great for a babys tooth and jaw growth (Leslie Burby). All of the above facts clearly prove that breastfed infants are to a benefit when it comes to having healthy teeth. These were some of the thousands of significant influences of breastfeeding on a baby. It is very clear through the reports and studies that have been carried out throughout the world that breastfeeding does play an extremely important role; in the development of the digestive system, in reducing the risk of obesity and in providing a better dental health to the baby. Almost all of these affects do stay into a childs life for a long period of time. These qualities are incredibly essential for a babys successful development. Although physical development of a child is such an extremely important topic, but still there is not a huge study done on this topic in particular. As the above research has been done through numerous different web sites, peer reviewed articles and books. It is highly suggested that there should be a much more firmed research done, from the perspective of the physical effects of breastfeeding on the child. In specific, as there are so many benefits of breastfeedi ng on the child, why not the government banned formula for the mothers who chose not to breastfeed their children. Work sited Davis, J N,  Weigensberg, M J,  Shaibi, G Q,  Crespo, N E,  Kelly, L A,  Lane, C J,  Ã‚  Goran, M I  (April 2007).  Influence of breastfeeding on obesity and type 2 diabetes risk factors in Latino youth with a family history of type 2 diabetes.  Ã‚  Ã‚  Diabetes Care. Canadian Paediatric Society , PS. (n.d.).  breastfeeding. Retrieved fromhttp://www.cps.ca/caringforkids/pregnancybabies/Breastfeeding Jon Ahrendsen, JA. (n.d.).  advantages of breastfeeding. Retrieved from http://www.breastfeeding.com/all_about/all_about_more Target Woman, TW. (n.d.).  Benefits of breastfeeding. Retrieved from http://www.targetwoman.com/articles/benefits-breastfeeding.html Kristen Burgess, KB. (n.d.).  Why breastfeed my baby?. Retrieved from http://www.naturalbirthandbabycare.com/why-breastfeed.html Leena Palande, LP. (2010, nov 18).  Advantages of breastfeeding. Retrieved from http://www.buzzle.com/articles/advantages-of-breastfeeding.htm American Academy of Pediatric Dentistry, AAPD. (n.d.).  Breast milk andcavities.Retrievedfromhttp://www.curetoothdecay.com/Baby_Bottle_Tooth_Decay/breast_milk_cavities.htm Leslie Burby, LB. (n.d.).  101 reasons to breastfeed. Retrieved from http://www.asnatureintended.info/breastfeeding.html Evenhouse, E.,  Ã‚  Reilly, S.  (Dec 2005).  Improved estimates of the benefits of breastfeeding using sibling comparisons to reduce selection bias.  Ã‚  Ã‚  Health Services Research.   Breastfeeding Medicine (May 2010). Early childhood: breastfeeding, solving the problem of childhood obesity within a generation, an excerpt from the white house task force on childhood obesity: report to the president.  

Mobile Phones Essay -- Technology

In their relatively short period of widespread use since their introduction in 1978 (Agar, 2003), handheld mobile telephones have had a significant impact across the globe on a social and economic level, however the long term impact of their use is difficult to predict. Despite this, mobile use in Australia has rapidly grown to rate of almost 130 phones per 100 people (MNO Directory, 2011), one of the highest in the world. Increasingly, consumers are purchasing smart phones, which have the same capabilities as computers in terms of internet access and processing power (Macmillan, 2007). These modern â€Å"smart phones† also allow for advanced features, such as mobile high-speed access to the internet and social media, and the ability to create, consume and share multi media all from the one device. This always on connectivity has, however, raised concerns regarding the outcomes of constant exposure to mobile phone radiation, but despite the potential risks, Australians continu e to use mobile telephones and their various features more than ever before. The use of social networking applications, such as Facebook and Twitter, on mobile devices has been rapidly rising, and it has been estimated that there are 925 million users of mobile social networking worldwide in 2012 (Meyers, 2008). With modern smart phones being able to access the internet in almost the same way as a desktop computer, the mobile phone has changed from a communication device, to something that constantly connects people with not only other people, but provides a constant source of new information and media. While current research suggests that use of the internet use can strengthen social contact, community engagement and attachment (Ellison, 2007), certain exper... ...ederal Communications Commission"FAQS - Wireless Phones". n.d.. http://www.fcc.gov/encyclopedia/faqs-wireless-phones#evidence (accessed 14/05/2012). Garnell, C. "Apps: the future of tech or a passing fad?". April 2011. http://www.techradar.com/news/software/applications/apps-the-future-of-tech-or-a-passing-fad--941212 (accessed 14/05/2012). MacMillan English Dictionary for Advanced Learners. 2ed. Macmillan, 2007. Macrae, F. "Mobile phones CAN increase cancer risk: Shock finding by major study". The Daily Mail, 2011. Meyers, J. US Mobile Social Networking and the Millennial Generation. Scottsdale: InStat, 2008. MNO Directory"Australia Mobile Market Q1 2008 - Q1 2011, PDF Report". 2011. http://mnodirectory.com/Australia.htm (accessed 15/05/2012). Sigman, A. "Decline In Face-to-Face Contact Linked to Biological Changes in Humans". Biologist, 2009, 2.

The Things they carried Portfolio :: essays research papers

Am Literature  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   Tarriq Hansrajh 06/07/05  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   4th Entry #1: In my pockets: Cell phone – 5oz Keys – 2oz Wallet – 3oz In my backpack: Spanish book – 5lbs Trig book – 9lbs 4 1 inch binders – 12lbs USHAP notebook – 1lb Other misc. items – 1.5lbs Total Weight: 29lbs 10oz This estimate does not surprise me at all because when I think about all the work that we have to do I remember all the textbooks that we have to carry around. In addition sometimes I come home with my back aching, but that’s usually only when I carry my USHAP notebook with me as well Am Literature  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚   Tarriq Hansrajh 06/07/05  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  4th Entry #2: â€Å"Rat† Kiley was born Bob Kiley on April 7 1939 in Albany, New York to Marie and Charlie Kiley. At age 11 Bob was given the nickname â€Å"Rat† by one of his friends when they were walking home from school one day when apparently Bob fell into a large open dumpster and when he emerged he had a few strings of spaghetti sticking out of the back of his pants. The nickname stuck with him all the way to his adulthood. Rat graduated from Creekside High School in 1957. He did not want to attend college right away but wanted to work in one of the factories in his home town to earn some money to pay for college. Even then his co-workers called him â€Å"Rat†. Two years later he had managed to save ten thousand dollar to put toward his college tuition but unfortunately he was drafted just like the rest of the men his age who were not attending college. When he was in Vietnam Rat encountered many terrible situations and was faced with severe heart ache when his best fri end Curt Lemon is killed by a landmine. Rat was devastated by this terrible event and felt an extreme sense of loneliness especially when he wrote a letter to Curt’s sister and she never responded. Rat fought through the rest of the war seeing too many tragedies that are too horrible to mention here and when he returned to his family in 1973, two years before the war ended they found his behavior very strange. They found that he was not the same person that he was before and eventually the found that he had gone completely insane. Rat would mumble things to himself and would scream as if he saw his friend Curt being killed right in front of him.

Boston matrix analysis for BHP Billiton Group

Abstract The paper provides an analysis of BHP Billiton Group based on the Boston matrix. It is indicated that this matrix is a solid marketing tool to determine the financial performance of organisations. It focuses on companies’ market share and market growth. As a result of the implementation of the Boston matrix analysis to BHP Billiton Group, it is concluded that the company is at the position of a cash cow on the matrix. This finding has significant practical implications, and thus recommendations to use certain strategies are provided. Introduction The Boston Matrix represents a marketing tool, which is commonly used to conduct product portfolio analysis and management. This instrument was introduced by the Boston Consulting Group in the 1970s (Stern and Deimler, 2006). The Boston Matrix mainly focuses on the dimensions of market share and market growth, as these aspects are considered important to identify the areas in which companies need to utilise resources in order to optimise their profit generation capacity (Kotler, 2006). The matrix indicates a focus on a product management perspective as an integral part of the analytical process. Market share refers to the percentage of the total market, which is attained by organisations. This value can be measured by considering the percentage of revenue or unit volume. It is usually assumed that a high market share suggests significant financial benefits to a company. Market growth relates to the attractive parameters identified in a particular market (Schermerhorn, 2013). Businesses are usually grouped into four major categories: dogs, cash cows, question marks and stars. Dogs are companies that encounter the challenges of low market share and low market growth, while cash cows tend to have a high market share in low growing markets (Kotler, 2006). Question marks have a low market share in high growing markets. Stars represent the ideal situation for organisations because they tend to have a high market share in a rapidly growing industry (Stern and Deimler, 2006). These elements are reported by Stern and Deimler (2006) to generate sufficient cash and extensive opportunities for development. By applying the Boston matrix analysis to the performance of BHP Billiton Groups, it appears that specific information and trends from the company’s segments should be considered. The iron ore segment of the organisation has been following a star strategy by focusing sales in Australia due to its intention to decrease production costs, which would help the corporation obtain a bigger share of the market. This may happen even though growth in Chinese steel output significantly decreases (BHP Billiton Ltd., 2013). BHP Billiton Groups has a high market share in the Chinese location but low growth, which reflected in the price drops. This in turn decreased the revenues from the company’s associated segments. According to this dimension, the corporation has been following a cash cow strategy. The iron ore segment of the organisation is facing persistent challenges related to the decline of iron price, workers strike as well as strengthening Australian dollar (BHP Billiton Lt d., 2013). The copper segment is also affected by copper prices. As a result, the organisation has been following a question mark strategy by indicating a low market share in China due to the overall decline in copper revenues. Yet, the strategy of the company is to maintain a high market growth because of its positive production outlook in the respective segment. Similarly, the coal segment is negatively affected by low coal prices and rising cost. However, the corporation’s coals continue to be recognised as the most highly valued, supporting strong long-term margins, implying that BHP Billiton Groups has been following a star strategy in the Chinese and Australian locations (BHP Billiton Ltd., 2013). Future supply growth in the coal segment indicates that it is predominantly Australian, which directly sets the organisation at the position of a star on the Boston matrix. The fact that the outlook for the petroleum segment looks good is important to predict that the company may return to its position as a star on the Boston matrix. One of the expectations in this context is that total shale production is most likely to rise in the future (Stern and Deimler, 2006). In terms of the company’s geographical locations, it seems that geographic factors limit competition for the organisation. The company operates in more than 100 geographical locations across the world. The company’s market share is high due to its diversified portfolio of services. Moreover, its market growth is relatively high (Grant, 2013). Therefore, BHP Billion is pursuing a star marketing strategy considering the mentioned aspects. With regards to the company’s aluminium segment, it can be argued that BHP Billiton is pursuing a star marketing strategy, considering its both high market share and high market growth. For instance, the corporation’s total aluminium production for the fiscal year of 2013 is approximately 1.2 Mt (BHP Billiton Ltd., 2013). This means that the company’s market share is extremely high in this segment, which along with its high market growth in markets of Western Europe and Asia makes the corporation in a winning star position on the Boston matrix. The manganese segment of the company shows its adoption of a star strategy because approximately 80% of its production is sold directly in countries, such as China, India and South Korea (Grant, 2013). This aspect implies that BHP Billiton has both high market share in the mentioned markets and high market growth. It can be argued that BHP Billiton Group’s share prices were relatively low in 2012. This aspect prompted the company to follow a question mark strategy because despite its low market share, the provision of various natural resources took place in a high growing market (Schemerhorn, 2013). However, at the end of 2012, the corporation gradually started expanding its share prices by representing an adequate price-to-earnings (P/E) ratio. This means that the group has focused on following a star strategy in its main segments. Yet, it is challenging to estimate the market price for each product due to the extensive diversity of the company’s products (Grant, 2013). Another challenge associated with the quantification of returns is the categorisation of returns in different currencies. As previously indicated, BHP Billiton Group placed importance on location when it comes to making investments. In the United States, the corporation has been extensively concerned to adhere to a star strategy on the Boston matrix by distributing crude petroleum (BHP Billiton Ltd., 2013). It is essential to note that the company relies on its current strength of occupying a leading position in global commodities prices that are related to the health of the international economy. This suggests the potential of the corporation to predominantly follow a star strategy, which would guarantee it a better position compared to other organisations operating in the same industry sector (Grant, 2013). Nonetheless, the company is unable to predict currency assessments, which may lead to the adoption of a cash cow or a question mark strategy according to the Boston matrix. It has been indicated that certain flaws in the global economy negatively affect the performance of the corporation in the sen se of decreasing its market share in certain segments. For instance, such flaws may lead to a reduced demand for commodities, which may directly reflect in lower prices and reduced profitability of the company. The diverse portfolio of assets provided by BHP Billiton Group has assumed a solid market position of the company in its major segments. It is important to note that the corporation occupies a leading position in the trade of uranium in Australia after Olympic Dam Mine as well as of other natural assets, such as silver and copper (BHP Billiton Ltd., 2013). This places the company at a quite favourable position regarding its trade activities and thus it is more likely to adopt a star strategy in its home country. The fact that the corporation is a leading producer of nickel globally is indicative of the high market share it has in different segments and in different locations across the world (Stern and Deimler, 2006). As a result of the application of the Boston matrix analysis to the performance of BHP Billiton Group, it can be suggested that the company has the potential to make a substantial impact on the global delivery of natural assets. Its position as a star in most of its seg ments and in most locations shows solid management and leadership practices present at the organisation. It is important to note that the major purpose of the Boston matrix analysis is to help BHP Billiton Group decide which of its business units should be kept as well as in which areas it can invest further (Grant, 2013). There are different strategies to be applied considering that the organisation is in the position of a cash cow on the Boston matrix. One of these strategies is to hold in order to maintain its sales or market share (Schermerhorn, 2013). Another strategy that can be utilised is to defend its position regardless of the challenges the company faces with regards to its market share and projected market growth (Kotler, 2006). BHP Billiton Group can also implement a strategy, which is identified as ‘milk’, implying that the company is expected to use the cash it generated in the fiscal year to return to its position as a star on the matrix from the period of 2011 to 2012 (BHP Billiton Ltd., 2013). The fact that the company is at the position of a cash cow means that its profitability ratios have significantly declined. For instance, the organisation’s net profit margin, operating profit margin, ROE and ROA deteriorated in the period from 2011 to 2012 and from 2012 to 2013. It can be suggested that the company should seriously rethink its position in the market so as to try its best to restore its star position from the past (Schermerhorn, 2013). The application of the Boston matrix analysis to BHP Billiton Group’s performance yields significant conclusions about the company’s challenges and opportunities that can be addressed. Conclusion This paper has provided an analysis of BHP Billiton Group’s financial performance based on the Boston matrix. It has been indicated that the organisation is currently at the position of a cash cow on the matrix considering its high market share and low growing market (Kotler, 2006). Certain strategies have been provided so that the organisation can implement them in order to improve its position and return to the status of a star, which represents an ideal combination of a high market share and fast growing market (Grant, 2013). References BHP Billiton Ltd. (2013). Stock Analysis on Net [online]. Available at: http://www.stock-analysis-on.net/NYSE/Company/BHP-Billiton-Ltd/Financial-Statement/Income-Statement [Accessed: 14 August 2014]. Grant, R. M. (2013). Contemporary Strategy Analysis. New York: Wiley. Kotler, P. (2006). Marketing Management. New York: Pearson Education. Schermerhorn, J. R. (2013). Exploring Management. New York: Wiley. Stern, C. W. and Deimler, M. S. (2006). The Boston Consulting Group on Strategy: Classic Concepts and New Perspectives. New York: Wiley.