Liquid Nitrogen Temperature

Liquid Nitrogen Temperature Liquid nitrogen is very cold! At normal atmospheric pressure, nitrogen is a liquid between 63 K and 77.2 K (-346 °F and -320.44 °F). Over this temperature range, liquid nitrogen looks much like boiling water. Below 63 K, it freezes into solid nitrogen. Because liquid nitrogen in a usual setting is boiling, its usual temperature is 77 K. Liquid nitrogen boils into nitrogen vapor at room temperature and pressure. The cloud of vapor that you see isnt steam or smoke. Steam is invisible water vapor, while smoke is a product of combustion. The cloud is water that has condensed out of the air from exposure to the cold temperature around the nitrogen. Cold air cannot hold as much humidity as warmer air, so a cloud forms. Being Safe With Liquid Nitrogen Liquid nitrogen is not toxic, but it does present some hazards. First, as the liquid changes phase into a gas, the concentration of nitrogen in the immediate area increases. The concentration of other gases decreases, particularly near the floor, since cold gases are heavier than warmer gases and sink. An example of where this can present a problem is when liquid nitrogen is used to create a fog effect for a pool party. If only a small amount of liquid nitrogen is used, the temperature of the pool is unaffected and the excess nitrogen is blown away by a breeze. If a large amount of liquid nitrogen is used, the concentration of oxygen at the surface of the pool might be reduced to the point where it can cause breathing problems or hypoxia. Another hazard of liquid nitrogen is that the liquid expands to  174.6 times its original volume when it becomes a gas. Then, the gas expands another 3.7 times as it warms to room temperature. The total increase in volume is 645.3 times, which means vaporizing nitrogen exerts immense pressure on its surroundings. Liquid nitrogen should never be stored in a sealed container because it could burst. Finally, because liquid nitrogen is so very cold, it presents an immediate danger to living tissue. The liquid vaporizes so quickly a small amount will bounce off the skin on a cushion of nitrogen gas, but a large volume can cause frostbite. Cool Liquid Nitrogen Uses The quick vaporization of nitrogen means all of the element boils off when you make liquid nitrogen ice cream. The liquid nitrogen makes the ice cream cold enough to turn into a solid, but it doesnt actually remain as an ingredient. Another cool effect of the vaporization is that liquid nitrogen (and other cryogenic liquids) appear to levitate. This is due to the Leidenfrost effect, which is when a liquid boils so rapidly, its surrounded by a cushion of gas. Liquid nitrogen splashed onto the floor appears to skitter away just over the surface. There are videos where people throw liquid nitrogen out onto a crowd. No one is harmed because the Leidenfrost effect prevents any of the super-cold liquid from touching them.

Private Unions Assignment Example | Topics and Well Written Essays - 250 words

Private Unions - Assignment Example Different labor markets address this issue differently depending on the extent to which such unions are needed. On the same note, both employees and employers remain divided over these unions, especially in an economy where the government addresses worker concerns with or without worker unions. Due to the fact that the government monitors the welfare of both employees and employers in the various labor markets in the economy, legislations that seek to strengthen unions in terms of their position in the economy and number or registered members are not necessary. Whether or not an employee should join a union should be a personal decision. â€Å"Right to Work† States have granted employees the right to decide whether or not to join unions or even support them financially, although there are exceptions to the railway and airline industries (Freeman, 2008). This move is beneficial to employees since they cannot be forced into unions or make mandatory contributions to unions that they do not wish to be in. Employees can push for their own welfare, air their concerns, and also balance employer-employee power without necessary depending on a

Site Planning and Construction Method Essay Example | Topics and Well Written Essays - 1000 words

Site Planning and Construction Method - Essay Example For the construction of the art gallery these points were kept in mind while reaching the final design. Considering these points and a few other, the most suitable design suggested is a RCC frame structure. The columns and beams both the storey will be at same positions but the position of the partition walls for both the storey will have different positions. The partition walls for all the rooms except the entrance hall and the lobby will be of brickwork while that of the entrance hall and lobby will be of hollow PCC blocks. The location of the site dictates the orientation of the building. The building will face the Lower Ham Road while the lobby will be open at the south, the opening will face the south bank of Thames. The reduced level i.e. the plinth level of the building will be kept well above the boat house to facilitate the river view for the lobby. The construction plan firstly involves the planning of the program. The gradual execution of projects and activities and the allocation of time and resources to different activities will be done by using planning aiding software i.e. MS Project. In order to avoid conflicts and problems proper constraints and deadlines will be applied to the activities regarding time and resources (procurement as well as human resource. Excavation and Foundation: The excavation will be carried out using excavator while the geology of the site i.e. near the river requires deep foundations which will be done by drilling precast RCC piles Super Structure: As stated in the brief the super structure will be a frame structure with brickwork partition walls for all the rooms except the entrance hall and lobby which will utilize hollow PCC blocks in partition walls As shown in the plan of the ground floor, there’s a large window on the side of the lobby facing the river to facilitate the riverside view. The geometric staircase ensures lesser use of space but looks aesthetically good. The schedule of openings

Malunggay as an effective cooking oil Essay Example for Free

Malunggay as an effective cooking oil Essay Commercial cooking oil is an enormous need of people nowadays. These days, cooking oil is becoming expensive. Commoners, or people with insufficient finance, can no longer afford this necessity. Instead, they opt for oil with lesser quality simply because it’s cheaper. It’s very ghastly to do this because for one; your health could be affected, two; you could harbour diseases, and three; on the worst case scenario, it could lead to your death. To think that they would go to extreme lengths, such as that, just to provide oil. Going back to the topic prior to this, we think that although it may be costly, most cooking oils are of unsatisfactory standards especially in our nutrition. With that said, we all share the idea of wanting to solve this problem. We conducted a research about the effectivity of Moringa Olefeira, also known as â€Å"Malunggay†, when used as an ingredient for cooking oil. We chose Moringa Olefeira for a reason; gram for gram, â€Å"Malunggay† leaves contain: seven times the vitamin C in oranges, four times the Calcium in milk, four times the vitamin A in carrots, two times and the protein in milk and three times the Potassium in bananas. Using this so called â€Å"Wonder Vegetable† (according to the elderly), we could create a product that can be healthy and useful, and at the same time be sold in a reasonable price. Our main goal is aimed at the welfare of everyone. We hope that this experiment can be of great help to anyone who uses it. We gathered the data of this study from various references. We owe a massive and part of this study to literature and the internet; without them we wouldn’t have anything, even a problem, to begin with. 3 Statement of the Problem. Main Problem Can malunggay (Moringa Oleifera) leave extract be a potential material for formulating cheaper yet healthier commercial cooking oil? Specific Questions 1. At which concentration of malunggay (Moringa Oleifera) leaves extract will it be able to cook food? a. 10 mg/ml b. 20 mg/ml c. 25 mg/ml 2. How effective will it be on cooking safe and edible food? It can be inferred in terms of: a. Period or time of cooking b. Taste of the food cooked c. Nutrition facts or nutrients contained by the food 4. Significance of the Study People living in the community. The study will help the people in the community to manufacture useful cooking oil that can be alternatively used to cook food – which is a basic commodity. Malunggay is very common to the community so people can easily grow them and prepare it for extraction. In addition, unlike the commercial cooking oil we use, it is healthy and contains the nutrients of malunggay. The researchers. The researchers will benefit from the study because in would fulfil our curiosity. It will also encourage us to find other alternatives from malunggay -which is very abundant in our country- that can help us in our everyday lives. Environment. The environment profit from the study in the fact that cooking oil that is already used by people will just be thrown away in the streams and it will cause water pollution. Not like with the cooking oil made from malunggay, its chemical components can be easily dissolved in water. Manufacturers of commercial cooking oil. This study would help big companies as it lessen the production cost of cooking oil because it only uses malunggay. 5 Scopes and Limitations of the Study The study aims to produce budget-friendly and nutritious oil that can be used by people to cook their own food. In able to do this study, researchers must first collect Malunggay (Moringa Oleifera) around the community and prepare it for extraction in the laboratory or do it at home. After the extraction process, series of test must be done to prove and justify the effectivity of the product. It must cook food using stoves at normal cooking temperature that are normally used by households and the food must contain healthy nutrients that must be good to our body. This experiment also has its fair share of restrictions. And one of those restraints is when the researcher doesn’t have sufficient materials to create the said product, especially if they don’t have the main ingredient or, in this case, the malunggay. The person would have to plant or buy these materials, thus spending much time and cash. Speaking about money, another problem may occur if the researcher has a weak budget. An extra problem is if the researcher does not have enough knowledge to create and research about the problem. Another limitation of the study is when the researcher doesn’t have a place to create the product or when his surrounding isn’t fit for the making of the substance. The researcher must remember to take into account even the smallest detail of this project. The researcher must have great dedication in doing this study. He should love what he is doing and he need to make it as one of he’s passion. 6.

Benjamin Jerome Cayetano :: Essays Papers

Benjamin Jerome Cayetano "†¦ No matter what kind of origin you have, you can succeed and rise to unprecedented. The American dream is still alive, but it definitely takes hard work and a lot of luck." This is a statement of Benjamin Cayetano when he was asked to give encouraging words to other Filipino American politicians. A lot of luck and fortune and hard work played a role in the life of Benjamin Cayetano, who is the first governor in the United States who is of Filipino ancestry. Governor Cayetano is today's highest-ranking Filipino American in government office. Born on November 14, 1939 in Honolulu, Hawaii, Benjamin Jerome Cayetano was the son of Bonifacio Marcos Cayetano, who migrated from Urdaneta, Pangasinan to Hawaii in 1928 as a part of the first wave of Philippine laborers to work at the sugar cane plantations. At the age of 6, his father and his mother Eleanor divorced, leaving him and his 4 year old brother to take care of themselves on a latchkey existence, while his father went to work as a waiter. As a child, Cayetano grew up in the Kalihi District of Honolulu, a working class community dominated by a diverse group of immigrant families, such as Chinese, Japanese, and Filipinos. The Kalihi District is an environment where manliness and superiority were measured by one's ability to settle disputes by the use of violence rather than intellectual dialogues. Early childhood experiences in the Kalihi district were major influences to Cayetano's adulthood as he later became a feisty but effective lawyer. Benjamin Cayetano graduated from Farrington High School in Honolulu, Hawaii in 1968. After graduation at the age of 18, Cayetano married his high school sweetheart, Lorraine Gueco, who according to him was "a major influence in his rise from a life of want to a life of means and power." A year later, when his first son Brandon was born, he was forced to worked a series of blue-collar jobs. In this period of hardship, Cayetano worked as a metal packer in a junkyard, followed by other jobs as a truck driver, gas station attendant, rodman, apprentice electrician, and finally as a draftsman with Hawaii's Department of Transportation.

Deceit in Hunters in the Snow Essay

Tobias Wolff’s â€Å"Hunters in the Snow† centers on the actions and personalities of Kenny, Frank and Tub as they embark on a hunting trip during the winter. Each character faces problems (in character or otherwise) which they attempt to cover up through deception – the central theme in this short story – in order to accept their respective actions. The consequences of these cover ups profoundly change the power of each character over another. Furthermore, the characters don’t realize how their lies influence others around them. Kenny is a quintessential bully. His need for power over the other two causes him to assert control of any action be it driving or asking for permission to hunt on private grounds. In truth, he doesn’t even wish to ask for permission but is pressured by Frank to do so. Kenny’s seemingly flippant mannerisms also follow from his desire to be the alpha-male. He insults and mercilessly teases Frank and Tub about their insecurities. He pretends to desire to run over Tub after appearing an hour late and immediately silences any objection from Tub. However, he neither realizes how far he is pushing Tub nor the peril he is in. His stupid actions leading up to and after the murder of the old dog finally push Tub, who legitimately fears for his life, to retaliate. This immediately puts Kenny’s life at the hands of his bully victims and leaves a power vacuum to be filled. Tub’s main problem is his denial of the poor eating habits that he has. He adamantly tries to convince others that his problem is due to his glans despite acutely knowing that he gorges himself on unhealthy foods in solitude. The insecurity he feels about being found out causes him to become easily manipulated and bullied by Frank and Kenny. Moreover, the retaliation against Kenny only adds to the insecurity Tub has and he immediately searches for approval and protection against the consequence of shooting Kenny. Frank fills in this vacuum and manipulates Tub into siding with him. Frank himself faces the issue of adultery. His lust for another woman causes him to deceive himself into believing that this new female is the love of his life despite a small part of his conscience stating otherwise. He even goes as far as to perverse the beliefs of that small part by asserting that his reluctance is only due to the good that his wife had done him and the kids they had. Frank’s self-deception inadvertently acts on Tub’s insecurities, prompting Tub to open up about his problems to Frank. By deceiving himself to accept his adultery, Frank pushes Tub to accept the eating problems that Tub has by giving in to Tub’s urges. Frank is unaware that his acceptance of adultery has already influenced Tub to succumb to Tub’s desires (shown by the fact that Tub decides to open up to Frank). Each character has major issues that need to be corrected but prefer to deceive themselves and others than accept the truth and work towards correction. As such, Kenny lies in mortal peril, Frank gains newfound power in the group and over Tub, and Tub remains submissive to Frank’s wishes. Moreover, the newfound confidence in Frank leads him to ignore common sense in going back to retrieve vital directions to the hospital. The futures of these three characters is left hanging, however it is clear that the ending has each one moving down separate and erroneous paths.

The Ideas And Reforms Of Marx And Kuyper - 1142 Words

The nineteenth century was a time of wide-spread changes across Europe and America. Two great seminal thinkers, Karl Marx and Abraham Kuyper, examined the issue of poverty during this time through their books The Communist Manifesto and The Problem of Poverty respectively. Both philosophers exposed economic, political, and social problems of this period. The ideas and reforms of Marx and Kuyper proved to be so tectonic that they resulted in the greatest political upheaval of the nineteenth and twentieth centuries. While Marx wrote his book to rally society against capitalism for a socioeconomic change, Kuyper viewed poverty through a Christian lens and weighed the effect of society in regards to this issue. It is true both philosophers†¦show more content†¦In this case, the split is between the Bourgeoisie (the middle class) versus the Proletariat (the working class). Marx argued the capitalist Bourgeoisie abused the Proletariats by profiting from their work while the Prolet ariats were not receiving what they deserved (Marx, p. 30). Marx knew the wealth of the Bourgeoisie depended on the work of the Proletariat, but he predicted the underclass would get sick of being exploited and revolt. In fact, he encouraged the underclass to overthrow the capitalists and stand up for their rights with his views known as Marxism. Abraham Kuyper also acknowledged the unfairness of the social classes that had developed. He related the inequalities between men were due to the belief that â€Å"the stronger devours the weaker,† and declared they were living in an animalistic society rather than a humane one (Kuyper, p. 25). The desire for wealth and material things had overcome the desire for the Christian faith. Kuyper urged the people to carry out their responsibilities as Christians and work toward shrinking the division between rich and poor by giving to the poor. Both Marx and Kuyper recognized the negative effect capitalism had on society, but Marx aimed to eliminate the capitalists’ economic system while Kuyper endorsed a giving society. Though Marx and Kuyper agreed on the need to change the inequality between the different classes, their views regarding religion differed. Marx thoughtShow MoreRelatedThe Revolution Of The Middle Of A Revolution1292 Words   |  6 Pagesthe gap between the poor and the rich. Aware of the widening gap, Karl Marx wrote out against the problem. However, the problem was still around about fifty years later when Abraham Kuyper also addressed the problem. Both Marx and Kuyper agreed that poverty was a problem and need to be fixed. Each one took a different view on how to fix poverty, and both have their flaws, but in the end, both Karl Marx and Abraham Kuyper are calling for action to end poverty. The problem with poverty is thatRead MoreCommunist Manifesto And Abraham Kuyper s The Problem Of Poverty1385 Words   |  6 PagesKuyper’s The Problem of Poverty. Both Marx and Kuyper’s writings focus on the social struggle between the privileged, wealthy, and unprivileged, poor; however, Marx presents the struggle and his solution from an economic viewpoint while Kuyper presents the struggle and his solution from a religious viewpoint. Marx begins his presentation with a defining of both socio-economic groups then presents the political movement of Communism as a solution to the contrast. Kuyper, on the other hand, focuses hisRead MoreKuyper Against Marx1795 Words   |  8 Pagesbetter. Although Kuyper and Marx agreed that social conditions in the Industrial Age were not acceptable, they differed on the cause and solution to the poverty and despair in the modern world. Kuyper’s approach to the problem of poverty is like minimally invasive surgery, less dam aging but more time-intensive. Marx’s approach, however, is like amputation with no cauterization, quick but with little chance of recovery. Marx seeks to heal a wound by creating another; Kuyper seeks to heal through