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Safety Hazard Related To Welding
Safety Hazard Related To Welding
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The welder is in a potentially hazardous environment in that acetylene though not especially toxic, it could contain impurities that are harmful such as traces of phosphates and arsine when generated from calcium carbide. This procedure is extremely flammable whereby its danger is related with instability particularly when it is pressurized. Unlike all the other ordinary flammables these are extremely exothermic reactions that do not need any oxygen to proceed. With extreme violence acetylene can explode if the absolute pressure of the gas exceeds the safe limit which is 101 k Pagage should thus not be exceeded (Puskar, 2013).
Prolonged exposure to the strong nail-polish remover could cause adverse effects to the human body namely; siderosis, metal fumes fever, system disorders, irritation of respiratory and much more. Ventilation measures should thus be put in place and could involve dilution ventilation which comprises fans such as roof exhaust fans and wall fans using large amounts of air to dilute contaminants to the concentrations below prescribed limits. The most appropriate method of controlling welding fumes and gases is the combination of general dilution ventilation and local exhaust (Reese, 2012).
For all welding and cutting operations, the welder must wear protective clothing as well as hearing protection. The welder should also ensure that his gloves are dry at all times especially when using the torch tip as grease is flammable and contact between the two could burn his hands (Swartz, 2001). References
Puskar, J. R. (2013). Fuel and combustion systems safety: What you don’t know can kill you!
Hoboken, N.J: Wiley.
Swartz, G. (2001). Job Hazard Analysis: A Guide to Identifying Risks in the Workplace.
Lanham: Government Institutes.
Two-Variable Inequalities
Two-Variable Inequalities
Anna Askew
MAT 222 Week 2 Assignment
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Two-Variable Inequalities
Two-variable inequalities, just like the name suggests, are inequalities that have two variables and take the form of Ax + By > C. The inequality symbol can either be less than, greater than, greater than or equal to, or less than or equal to. Since we are dealing with equality, the graphs and solutions demonstrate a range of possible answers that would work in the given situation. Two-variable inequalities can be in navigation to guide the captains of the ships. This concept can be applied by ship operators to know the number of products they can ship during a trip.
All of the possibilities for the number of refrigerators and the number of TVs that will fit into an 18-wheeler are as shown in the graph below.
An equality that describes the shaded region can be derived using the data presented.
The diagram is showing the number of refrigerators on the x axis and the number of TVs on the y axis. There are two points on the graph, (110, 0) and (0, 330), so we can compute the slope of this line as follows (Dugopolski, 2013):
m = (Y1 – Y2) / (X1 – X2)
= (0 – 330) / (110 – 0)
= -330/110
= -3
This gradient will help form a linear inequality as follows:
Y1 – Y2 = m(X1 – X2)start with the point-slope form
Y1 – 0 = -3 (X1 – 110) substituting -3 for the gradient and (110, 0) for x and y
Y1 = -3X1 + 330use the distributive property
Y1 + 3X1 ≤ 330inert the less than or equal symbol after adding 3X1 to both sides
The graph has a solid line and not a dotted line; this is why the inequality symbol includes an equal to bar.
The next question asks if the truck will hold 71 refrigerators and 118 TVs.
This will form a point (71, 118) which is called a test point and is used to make sure the shading will fall on correct side of the line. To determine this we substitute it into the previously formed inequality as follows:
Y1 + 3X1 ≤ 330
118 + 3*71 ≤ 330
118 + 213 ≤ 330
331 ≤ 330this statement is false therefore the truck cannot hold 71 refrigerators and 118 TVs.
The next question is asking it the truck can hold 51 refrigerators and 176 TVs
This is another test point and its solution is similar to the previous one.
Y1 + 3X1 ≤ 330
176 + 3*51 ≤ 330
176 + 153 ≤ 330
329 ≤ 330the statement is true and so the truck can carry the load
The next problem requires a maximum to be found which can be calculated as follows:
Y1 + 3X1 ≤ 330
Y1 +3*60 ≤ 330replace X1 with 60
Y1 ≤ 150the maximum number of televisions is 110
The next problem also requires a maximum to be found which can be calculated as follows:
Y1 + 3X1 ≤ 330
200 + 3X1 ≤ 330replace Y1 with 200
3X1 ≤ 130subtract 200 from both sides
X1 ≤ 43.3333divide both sides by 3. Maximum number of refrigerators is 43
In summary, two-variable inequalities can be used to calculate how many items can fit in a given space. At times, one may have a storage or carriage space but lack the accuracy of determining how many of what items can fit. With the knowledge of two-variable inequalities they can be able to predict this. I have learnt that variable inequalities are very useful in many sectors. People who deal in transit business will find this concept very useful.
Reference
Dugopolski, M. (2012). Elementary and intermediate algebra (4th ed.). New York, NY: McGraw-Hill Publishing.
Macro-eco-questions, Global Economics
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Global Economics
BUSINESS SCHOOL- LEVEL ONE STUDY
There are 6 very simple questions in this assignment and everyone should get HD (80%-90%) of the total 50 marks.
Question 1: Refer to the line chart below and discuss the possible economic reasons for those differences between the five countries. (120 words) 9 marks
Your answer should be here:
According to World Bank statistics by 2012 among the five countries listed above China topped the group with about 1.351 trillion people. Though they prove to have advantage of a pool of workforce among the other countries viz-a-viz the less physical capital in the country make them to second last in the graph.
Equally Indonesia seconds in the group in respect to population rating with 246.9M people as per to World Bank data by 2012 versus the less physical capital present in the country making them to slag behind among the five countries as per to GDP per capita comparison.
The third in population rating among the five countries according to 2012 World Bank statistics is Russia with a population of approximately 143.5M, though with a higher capability of human capital makes it to be ahead of China and Indonesia in GDP per capita comparison.
Australia proves much higher in the second of the five countries GDP per capita comparison because it enjoys a great level of physical capital in form of capital stock and at par level of human capital with great education and skills to propel economic growth consequently raising the Australian Gross Domestic product at the same time enjoying the privilege to have the most manageable population viz-a-viz its natural resources.
The UK stands out among the group to top the graph in comparison of the GDP per capita since it has the most effective and efficient technology among the five countries. Apart from this, it has invested so much of its resources in nurturing the human capital of its population through appropriate education and skills acquisition of greater man-power provision. Further the capital stock base of rates highest among the countries against a manageable population of about 62.23M.
Question 2: Refer to the line chart below and discuss the possible economic reasons for those differences between the five countries. (120 words) 9 marks
Your answer should be here:
China is achieving so much growth in the GDP growth as from the peak of its economic transformation from 2005 to be on the top of scale henceforth in comparison among the five countries. She has hugely expanded her physical capital base of the stock of their capital by marshalling resources in and without its borders. It has invested in its huge labour force by enhancing the educational levels of the population and better and appropriate skills acquisition to ensure effectiveness in its human capital. Technology-wise they have made a greater step in investing in modern machines, merchandise for effectiveness and efficiency in operations.
United Kingdom shows a relatively steady GDP growth with exhaustion of its skills and educational personnel to a point of less progressive economic growth. There is less innovation resulting to almost stagnant rate in economic growth in the period 2009-2012. The human capital is giving as sign of reaching its peak.
Indonesia portrays lack of development of new knowledge through carrying out of research and development (R&D). The low levels of technological advancement make them to slag extremely behind the five countries.
Russia and Australia almost tie in the same position due to less physical capital in the form of capital stock to enable conversion of such resources into economic productivity to add into the national gross value
Question 3: Refer to the line chart below and discuss the possible economic reasons for those differences between the five countries. (120 words) 9 marks
Your answer should be here:
The increasing technological prowess in China results to a steady positive GDP growth for nearly two decades. The deflections in the Chinese GDP growth have been manageable due to availability of human capital to propel economic progress.
The economic instability in Russia is as a result of political instability in the country as a result of waging civil wars causing extreme values in its GDP growth rate with negative figures and positive figures simultaneously.
The growth in technological progress and build of productive human capital to facilitate production processes and also the 1998 economic recession in Indonesia has been its major drawbacks to economic development.
Australia’s less of investment in huge human capital in the educational and skills acquisition to propel the economic undertakings.
Question 4: Refer to the line chart below and discuss the possible economic reasons for those differences between the five countries. (120 words) 9 marks
Your answer should be here:
The economic recession in Russia back caused the high inflationary gap experienced in the period 1994 and below.
The political stability relative across the other four nations has resulted to a more subjectively similar inflationary gap. The consumer Purchasing Power Parity (PPP) across the nations have shown a less deflection from year 2000 and beyond in its scope as the nations manage the balance of trade deficit to stabilize the local currency versus the foreign currency exchange rates.
Question 5: Refer to the line chart below and discuss the possible economic reasons for those differences between the five countries. (120 words) 9 marks
Your answer should be here:
The Chinese economic prowess in the technological advancement has resulted to efficiency in the production and timely operational levels. This modern technological improvement has resulted to high rate of raw material processing and thus absorption of experts and other line of labour force to the grid system of employment
Indonesia experiences fluctuating levels of stable employment so much due to lack of investment in the productiveness of production through reliable human capital empowerment.
The Russians economy shows high margin of unemployment with a wide deflecting stands due prioritizing in military stability rather than economic empowerment of its people. The less physical capital to put into production with other factors of production to enable economic development and thus facilitate eradication of unemployment in the nation is building up the gap between the citizens employed and the ones unemployed.
Question 6: Why you might want to use more than one chart to present variables in the above five questions? (100 words) 5marks
Clarity-different graphs presentation offers a vivid evaluation and clear analysis of the variables for effective deductions.
Verifiability-the different graphs representation enable emphasis and prioritization on what aspect of the economic development to tackle at what specific time.
Speed –the time taken to make sense of what a chart presents is of importance. The shorter the time the more effective a process is. This enables in completion of a task in record time scheduled.
Precision-the exactness in what scope and limit of the economy to scrutinize enables delegation of duties and tasks to the personalities with the specific expertise the particular area requires. This enables assigning personalities in the line they best fit for efficiency purposes in the general outcome of the whole task.
Bibliography:
Boyes, W. J., & Melvin, M., 2013. Economics. Australia, Cengage Learning South-Western.
Greenhalgh, C. A., Layard, R., & Oswald, A. J., 1983. The Causes of unemployment. Oxford,Clarendon Press.
International Monetary Fund. 1998. World economic outlook: a survey. Washington, D.C.,International Monetary Fund.
International Monetary Fund Staff. 1989. World Economic Outlook, October 1989 A Surveyby the Staff of the International Monetary Fund. Washington, International MonetaryFund. http://www.elibrary.imf.org/view/IMF081/A0248-9781451944433/A02489781451944433/A0248-9781451944433.xml.
Nafziger, E. W., & Nafziger, E. W., 2005. Economic development. New York, CambridgeUniversity Press.
World Bank. 2012. World Development Indicators 2012. Washington, D.C., The World Bank.http://site.ebrary.com/id/10555108.