Academic literature on the topic 'Put-out chemicals'
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Journal articles on the topic "Put-out chemicals"
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Lofstedt, Ragnar. "Chemical Control Policy in Sweden, What is Next?" European Journal of Risk Regulation 5, no. 3 (2014): 351–58. http://dx.doi.org/10.1017/s1867299x00003871.
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Sweden has long been seen as a pioneer in the area of chemical control policy. In 1995 it put forward a so called “generation goal” which called for a phasing out of all human made chemicals within a 25 year period. The Swedish Government took up the challenge of how to best reach this goal by putting forward a number of environmental quality objectives, which were approved by the Swedish Parliament in 1999. What has happened since then? Will Sweden reach its proposed generation goal? This paper addresses these two questions.
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Y. Rajaa Vikhram, G., Rakshit Agarwal, Rohan Uprety, and V. N.S. Prasanth. "Automatic Weed Detection and Smart Herbicide Sprayer Robot." International Journal of Engineering & Technology 7, no. 3.6 (2018): 115. http://dx.doi.org/10.14419/ijet.v7i3.6.14952.
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The ordinary method for murdering weeds (unwanted plants) in a harvest manor is to shower herbicides all over the estate. This outcomes in defilement of the sustenance crops and furthermore the yield turns out to be less as a portion of the production plants pass on alongside the weeds. In this way, there is a requirement for a brilliant weed control framework. In this venture, a picture handling calculation is utilized to take pictures of the manor columns at consistent interims and after recognizing the weeds in the captured image, the weed killer chemical is showered specifically and just o
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Venegoni, Ivan, Annamaria Votta, Enrico Bellandi, Francesco Pipia, and Mauro Alessandri. "Copper Catalysis Effect Investigation for TiW Etch Process on Patterned Wafers." Solid State Phenomena 314 (February 2021): 282–88. http://dx.doi.org/10.4028/www.scientific.net/ssp.314.282.
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The use of various H2O2 based chemistries for TiW etch was studied on single wafer and wet bench tools. The focus of the investigation was put on the different behaviors of these chemicals on blanket and patterned wafers. The results of the etch rate tests showed much higher values on the wafers where copper was exposed, leading to the hypothesis that the etch rate on TiW should be driven by the catalysis effect of the transition metal on the H2O2 decomposition reaction. Additional optical inspections, ToF SIMS, SEM and TEM analyses were carried out to confirm this hypothesis and find the best
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Kaguchia, SM, SM Gitahi, CL Thoruwa, JK Birgen, and JK Birgen. "Bioefficacy of Selected Plant Extracts against Sitophilus zeamais on Post-Harvest Management of Zea mays." Journal of Phytopharmacology 7, no. 4 (2018): 384–91. http://dx.doi.org/10.31254/phyto.2018.7406.
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Maize (Zea mays L.) is the most important cereal crop in Kenya with 90% of the total population relying on it as the main staple food. Post-harvest loss in maize is caused by insect pests such Sitophilus zeamais and Larger grain borer and the can sometimes be up to 90 percent. Synthetic chemicals are used to manage weevil infestation in maize. However, chemical residues have been detected on the stored maize prior to consumption. Additionally, continuous uses of synthetic chemicals have led to development of pest resistance reducing their effectiveness. This study therefore sought to evaluate
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Sravan Kumar P, Akila CR, Vinaya B, and Dinesh Babu J. "Variation of the antioxidant activity with the extraction method and solvent selection." International Research Journal of Pharmaceutical and Applied Sciences 10, no. 4 (2020): 39–42. http://dx.doi.org/10.26452/irjpas.v10i4.1383.
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Extraction is a significant step in the processing of the crude drug to get its chemical constituents out and keep them of high and exportable quality. The plants have various chemical constituents that are responsible for various activities in which antioxidant activity is the important one. There is another step that is crucial in the extraction process that is the selection of the suitable for extraction. Various solvents are used for extraction. They too range from the highly non-polar solvents like benzene and chloroform to the highly polar solvents like Ethanol and distilled water. So, i
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Bagdatlı, M. Cüneyt, and Ahmet Mahmut KILIÇ. "OCCUPATIONAL SAFETY RISK ANALYSIS OF ORGANIZED INDUSTRIAL ENTERPRISES IN NEVSEHIR PROVINCE OF TURKEY BY FINE-KINNEY METHOD." International Journal of Engineering Technologies and Management Research 7, no. 7 (2020): 33–41. http://dx.doi.org/10.29121/ijetmr.v7.i7.2020.722.
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This research has been carried out within the scope of the solutions proposed for the evaluation of occupational safety risk analysis in 10 selected enterprises by random sampling in Organized Industrial Zone of Nevşehir province, Turkey and elimination of risk factors towards the results obtained. In scope of the study, Fine – Kinney method were used as risk assessment methods in each of the food, metal processing, machining and plastic firms. At the end of the study, a total of 122 risk factors have been identified in the whole enterprises. Commonly risks arising from falling from heights, f
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Agahiu, A. E., and S. E. Akogu. "Utilization of Herbicide by Farmers in Kogi State, Nigeria." Journal of Agriculture and Crops, no. 58 (August 15, 2019): 117–22. http://dx.doi.org/10.32861/jac.58.117.122.
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A survey experiment was conducted during the 2018 cropping season to assess the utilization of herbicides by farmers in Kogi state. The study was carried out through the use of structured questionnaires administered to nine hundred (900) farmers across five (5) Local Government Areas (LGAs), (three villages per LGA and 20 farmers in each village were sampled) in each of the three senatorial districts of the state.Results showed that farmers across the three senatorial districts were mostly males (79%), married (78.7%) illiterates (55.31%) and aged (41-60 years). Very few farmers had post secon
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Esakki Muthu, K., and K. Rajamannar. "A Study on Impact of Make in India in Indian Foreign Direct Investment." Shanlax International Journal of Economics 8, no. 2 (2020): 54–58. http://dx.doi.org/10.34293/economics.v8i2.1878.
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That impact of globalization on employment can be a Central concern of current political current economic climate. For the “Make in India” promotion, the Government of India has diagnosed twenty-five precedence sectors that will be offered properly. Foreign direct investment (FDI) in India has received a the spian enhancement from instigating the Make in India scheme, as per the most recent Economic Survey. The investment climate in India has improved. Intending to attract and promote FDI, the Government of India (GoI) has put in place a policy framework on FDI, which is transparent, predictab
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Nganga, PK, and CR Vogl. "Quality perception of organically grown tomatoes (Lycopersicon esculentum Mill.) in Vienna, Austria." International Journal of Agricultural Research, Innovation and Technology 5, no. 2 (2016): 16–20. http://dx.doi.org/10.3329/ijarit.v5i2.26263.
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Austria is one of the major organic tomato producing countries for local and export marketing. These tomatoes are produced in parts of Austria especially around Vienna where their production system has to meet stringent organic quality standards in both local and international markets. These quality standards may put considerable strain on farmers and are normally formulated without famers participation so may not be wholly representative of the farmers quality interpretation. The aim of this paper is therefore to determine the Austrian organic tomatoes growers perception and practice of qu
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JAMES, PETER. "Protein identification in the post-genome era: the rapid rise of proteomics." Quarterly Reviews of Biophysics 30, no. 4 (1997): 279–331. http://dx.doi.org/10.1017/s0033583597003399.
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Most advances in biology can usually be traced back to the development of a new technique: the recent explosion in sequence information in the databases arose from the pioneering work on separation methods by Frederick Sanger which paved the way for the development of protein (Sanger, 1945) and DNA/RNA (Maxam & Gilbert, 1977; Sanger, 1981) sequencing and culminated in the receipt of two Nobel prizes by Sanger. The initial phase of sequence database expansion was slow due to the tedious and slow nature of protein sequencing. Peptide sequencing was carried out manually and the complete analy
Dissertations / Theses on the topic "Put-out chemicals"
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Číhalová, Martina. "Přepracování některých nebezpečných chemických látek a odpadů." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2011. http://www.nusl.cz/ntk/nusl-216780.
Full textBooks on the topic "Put-out chemicals"
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Öhrström, Lars. The Last Alchemist in Paris. Oxford University Press, 2013. http://dx.doi.org/10.1093/oso/9780199661091.001.0001.
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This is a book about discovery and disaster, exploitation and invention, warfare and science - and the relationship between human beings and the chemical elements that make up our planet. Lars Ohrstrom introduces us to a variety of elements from S to Pb through tales of ordinary and extraordinary people from around the globe. We meet African dictators controlling vital supplies of uranium; eighteenth-century explorers searching out sources of precious metals; industrial spies stealing the secrets of steel-making. We find out why the Hindenburg airship was tragically filled with hydrogen, not h
Book chapters on the topic "Put-out chemicals"
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Berry, Chris. "Taming the Hydra: Funding the Lithium Ion Supply Chain in an Era of Unprecedented Volatility." In Energy Storage Battery Systems - Fundamentals and Applications [Working Title]. IntechOpen, 2020. http://dx.doi.org/10.5772/intechopen.92891.
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The lithium ion supply chain is set to grow in both size and importance over the coming decade due to government-led efforts to decarbonize economies and declining costs of lithium ion batteries used in electronics and transportation. With forecasts of demand for lithium chemicals alone forecast to grow by three times later this decade, at least $10B USD is needed to flow into the upstream supply chain to ensure an efficient and timely build-out. Significant additional capital is needed for other portions of the supply chain such as other raw materials, cathode or anode production, and battery cell manufacturing. Recent exogenous shocks such as the US-China trade war and coronavirus disease 2019 (COVID-19) pandemic have made securing adequate capital for the supply chain a difficult challenge. Without the steady stream of funding for new mine and chemical conversion capacity, widespread adoption of electric vehicles (EVs) could be put at risk. This paper discusses the current structure of the lithium ion supply chain with a focus on raw material production and the need for and challenges associated with securing adequate capital in an industry that has, to date, not experienced such a robust growth profile.
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Kaur, Tejinder, and Praveen P. Balgir. "Ancient Pediocin to Innovative Antimicrobial." In Advances in Medical Diagnosis, Treatment, and Care. IGI Global, 2021. http://dx.doi.org/10.4018/978-1-7998-0307-2.ch009.
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Multi-drug resistance among patients suffering from infectious diseases has reached such proportions as to render them ineffective. WHO has to put out advisories time and again as to regulate their use. The presently available antibiotics are targeted at inhibiting vital biochemical pathways of pathogens, like nucleotide, protein, or cell wall synthesis in a very specific manner. Antibiotics have been rendered ineffective due to chemical modification, gene mutation, or transport mechanisms employed by pathogens. The novel approach to this problem can be naturally occurring antimicrobial peptides like bacteriocins produced by food grade bacteria. Pediocins produced by pediococcal strains have been found to inhibit a broad spectrum of pathogens by mechanisms that are robust enough to withstand development of resistance. Thus, these pediocins are attractive molecular precursors to develop novel antimicrobials. However, their application as such poses challenges that can be overcome with developing innovative technologies of chemical modifications and delivery strategies.
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"Stereohedrons and Partition of n-Dimensional Space." In Chemical Compound Structures and the Higher Dimension of Molecules. IGI Global, 2018. http://dx.doi.org/10.4018/978-1-5225-4108-0.ch007.
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The process of hierarchical filling of space by p-dimensional regular polytopes is considered under the condition of large-scale discrete increase in the size of polytopes and preservation of their shape (scaling process). It is shown that the polytopic prismahedrons are a concrete realization of the stereohedrons. The polytopic prismahedrons have the necessary properties for translational filling of spaces of higher dimension without slits face to face. Moreover, it is proved that the polytopic prismahedrons forming such fillings can have common elements of any dimension included in the polytope. On the basis of the research carried out in spaces of higher dimension, a new paradigm for describing a discrete world has been put forward.
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Netzer, Falko P., and Claudine Noguera. "Growth of Oxide thin Films and Nanoparticles: Methods of Fabrication." In Oxide Thin Films and Nanostructures. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780198834618.003.0002.
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This chapter outlines the fabrication methods of oxide thin films, from the oxidation of the outer layers of bulk elemental solids to thin film deposition methodologies. The classical theories treating the thermal oxidation of metals and silicon are reviewed. A particular focus is put on the oxidation of alloy single crystal surfaces to generate ultrathin oxide films and the formation of surface oxides, the latter as precursor layers for thicker bulk-type oxide phases. The diverse deposition techniques to grow epitaxial thin oxide films are introduced, with a classification into physical and chemical methods for the ease of presentation; the benefits and disadvantages of the different methods are pointed out. The synthesis of oxide nanoparticles is discussed in the gas phase and in liquid phase environments. The fundamental concepts of nucleation and growth of thin films and nanoparticles are introduced, including the classical capillary approach and atomistic descriptions.
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McFarland, Ben. "Unfolding the Periodic Table." In A World From Dust. Oxford University Press, 2016. http://dx.doi.org/10.1093/oso/9780190275013.003.0007.
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Our starting point is not hidden, nor is it far off. It is not an extreme place like Mono Lake or Freswick Castle, but it is a central concept expressed on a single page. The periodic table is the center of chemistry, and therefore of this book. You can spot it at a distance from its vaguely cathedral-like shape. You can see the chemical symbols that it contains on magnets and T-shirts and restaurant signs. Its regular columns are not quite symmetric, but that is because it has been twisted out of its natural shape by the contingencies of history. Rearrange it just a little and a simple mathematical pattern appears. To see this pattern, imagine that the periodic table is made out of beads on an abacus, arranged in the familiar U shape. Then push all the beads to the left: … Row 1 = H- He Row 2 = Li- Be- B- C- N- O- F- Ne Row 3 = Na- Mg- Al- Si- P- S- Cl- Ar Row 4 = K- Ca- Sc- Ti- V- Cr- Mn- Fe- Co- Ni- Cu- Zn- Ga- Ge- As- Se- Br- Kr Row 5 = Rb- Sr- Y- Zr- Nb- Mo- Tc- Ru- Rh- Pd- Ag- Cd- In- Sn- Sb- Te- I- Xe … By row, there are 2, 8, 8, 18, and 18 elements. The pattern continues in the rows below, but it is obscured by the fact that on most tables 14 elements have been moved out of the sixth and seventh rows. On the table here I have put them where they belong. These rows have 32 elements each. This can be simplified even more. The rows increase, first by 2, then by 6 more (2 + 6 = 8), then by 10 more (2 + 6 + 10 = 18), then by 14 (2 + 6 + 10 + 18 = 32). The series 2, 6, 10, 14 is the doubles of counting up by odd numbers: 1, 3, 5, 7. Put another way, each row is equal to 2n + 1 with n = integers from 0.
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Rickard, David. "Acid Earth." In Pyrite. Oxford University Press, 2015. http://dx.doi.org/10.1093/oso/9780190203672.003.0011.
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The atmosphere and much of the rivers, lakes, and oceans of the Earth are oxygenated. Any pyrite that comes into contact with these environments becomes unstable and breaks down. The process is called oxidation. It is an exothermic process and, as described in Chapter 5, this process was thought to heat the Earth. It is the opposite of reduction, which we discussed with regard to the microbial formation of sulfide from sulfate in Chapter 6. The counterintuitive concept important here is that oxidation is a chemical process that does not necessarily need oxygen. This idea—that you can oxidize things in the absence of oxygen—is one that most natural scientists are aware of but that they need a couple of nudges occasionally to remind themselves about. This means that pyrite oxidizes not only in oxygenated environments—although that is what we are most familiar with—but also in oxygen-free environments. Among the products of pyrite oxidation are large quantities of acid. Although this happens naturally during rock weathering, the intervention of humankind has led to an enormous increase in the exposure of pyrite to the atmosphere. This has produced contamination of the atmosphere, groundwater, and watercourses on a regional scale. It has also increased the amount of uncontrolled coal burning in coal seams, coal mines, and coal waste tips worldwide, making whole towns uninhabitable and laying waste to large areas. In this chapter I consider in more detail what exactly the process of pyrite oxidation is and how it affects the Earth’s environment today, as well as the problems it stores up for humanity in the future. In chemical terms, oxidation does not mean just the addition of oxygen. Oxidation is a reaction that involves the removal of one or more electrons from a compound because of a chemical reaction. One of the most familiar oxidation reactions is combustion, where substances burn in air to produce heat. The way to put out such a fire is to restrict oxygen access using a chemical foam or fire blanket. Since this reaction with oxygen was the best known, the process was called originally called oxidation.
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Morrow, Gary W. "Bioorganic Reactions." In Bioorganic Synthesis. Oxford University Press, 2016. http://dx.doi.org/10.1093/oso/9780199860531.003.0005.
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It is not essential to have a background in enzymology or biochemistry to gain at least an introductory-level understanding of many biosynthetic processes, so this book does not deal with enzymology or enzyme structure or function in any significant way, even though much of the chemistry we will be examining depends almost entirely on enzyme catalysis. Nevertheless, we will refer to enzyme catalysis and the names of specific enzymes throughout the text as we examine biosynthetic processes and reactions in significant detail. So what exactly are enzymes? Simply put, enzymes are naturally occurring proteins that catalyze various biochemical reactions in living systems. As we will see, many of the reactions they catalyze are familiar organic reactions, but have specific purposes and target structures. Generally speaking, enzymes catalyze organic reactions by lowering transition state energies or raising ground state energies of reactants in much the same way as nonenzymatic catalysts in laboratory chemical reactions, though in the case of enzyme catalysis, rate enhancements of as much as 1023 have been reported, far exceeding rate enhancements currently achievable by conventional chemical means. Understanding the interaction of enzymes and substrates (reactants) to form an enzyme–substrate complex (E–S complex) is fundamental to having some appreciation for how enzymes carry out their work. While overly simplistic, the “lock-and-key” model of enzyme–substrate interaction provides an intuitive context for understanding the remarkable substrate specificity of enzyme-mediated reactions. Thus, so-called enzyme active sites or binding sites (the “lock”) will only accept certain specific substrate structures (the “key”), with shape, conformation, intermolecular forces, and other factors determining the lock-and-key fit. Enzymes not only catalyze specific kinds of reactions, they can act specifically on certain compounds or classes of compounds or functional groups, often showing remarkable selectivity and stereospecificity, especially in the recognition and/or introduction of chirality centers in organic molecules. In terms of nomenclature, enzyme names always end with an ase suffix and are typically named in accordance with the substrate they act upon and/or the kind of reaction process they catalyze.
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Lane, Belden C. "Justice: The Meramec River at Times Beach and Mohandas Gandhi." In Backpacking with the Saints. Oxford University Press, 2015. http://dx.doi.org/10.1093/oso/9780199927814.003.0025.
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The spring-fed Meramec River wanders for 218 miles through six Missouri counties before it flows into the Mississippi eighteen miles south of St. Louis. It cuts across the northeastern corner of the Ozark Plateau, carving out bluffs of white dolomite limestone along its way. The stream passes by Onondaga Cave, Meramec State Park, and Meramec Caverns, becoming a lazy river fed by smaller tributaries and floated by weekend adventurers. Overhanging sycamores and cottonwoods crowd its banks. Springs and caves invite floaters to tie up their canoes and explore. Mussel beds are plentiful, as are crappie, rainbow trout, and channel cat. The name “Meramec,” in fact, comes from an Algonquin word meaning “ugly fish” or “catfish.” I’ve put the kayak into the water at the river’s Allenton access south of I-44 near Eureka, Missouri. Paddling eight miles downstream, I’ve stopped for the night just past the old Route 66 bridge near Times Beach. Today Times Beach is a ghost town, but it’s still remembered as the site of the worst environmental disaster in Missouri history. In the early 1970s, the country’s largest civilian exposure to dioxin (TCDD) occurred here along the banks of the Meramec. Waste oil containing the toxic chemical used in making Agent Orange was spread on the town streets in order to keep down the dust. The Environmental Protection Agency ended up buying out the entire town and incinerating everything. All that’s left of Times Beach today is what locals refer to as the “town mound,” a long raised embankment of incinerated dirt covered with grass. Since 1999, the site has been turned into Route 66 State Park, commemorating the Mother Road of public highways, begun in 1926. Historic Route 66 was the first of America’s cross-country highways, extending from Chicago to Los Angeles. It crossed the Meramec River at this point. Known as “The Main Street of America,” the road symbolized the nation’s fascination with the automobile and the movement west. “Get your kicks on Route Sixty- Six” crooned Nat King Cole in his R & B classic of the 1940s. Today the old concrete bridge over the river goes nowhere.
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Atkins, Peter. "Two Hands Clapping: Redox Reactions." In Reactions. Oxford University Press, 2011. http://dx.doi.org/10.1093/oso/9780199695126.003.0009.
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I promised in Reactions 3 and 4 to lead you to the promised land of the modern understanding of oxidation and reduction reactions. This is the section where these two great chemical rivers flow together and acquire great explanatory power and wide applicability. I have already shown that one great class of reactions, those between acids and bases (Reaction 2), takes place by the transfer of one fundamental particle, the proton. I shall now show you that oxidation and reduction reactions all take place by the transfer of another fundamental particle, in this case the proton’s cousin, the electron. Don’t be put off by the thought that in this unification of two great rivers I am embarking on a highly abstract, distant-from-reality account. All I am doing is looking for and presenting the essential step that is involved in these reactions. This is a bit like looking for the core idea of many sports, which is to get a projectile to move into a particular location, be it soccer, baseball shooting, darts, archery, or billiards. I hope you will begin to appreciate in the course of this chapter that when chemists carry out their reactions by stirring, boiling, and mixing, all they are doing is encouraging fundamental particles, in this case electrons but in Reaction 2 protons, to migrate from where they are found to where the chemist wants them to be. Industry does the same coaxing on a massive scale. My aim here is to show you that everything I discussed in Reactions 3 and 4 boils down to the consequences of the transfer of electrons from one species to another. You have already caught a glimpse of that process as we stood together perilously deep inside the blast furnace in Reaction 4 and saw that O2– ions transfer electrons to Fe3+ ions to bring about the reduction of the ore to the metal. Tighten your intellectual seat belt. I intend to develop the very sparse view that oxidation is the loss of electrons and reduction is their gain. That is the austere message to take from this chapter, but I will cloak it in velvet.
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Atkins, Peter. "Green Chemistry: Photosynthesis." In Reactions. Oxford University Press, 2011. http://dx.doi.org/10.1093/oso/9780199695126.003.0032.
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Each square metre of the Earth receives up to 1 kW of solar radiation, with the exact intensity depending on latitude, season, time of day, and weather. A significant amount of this energy is harnessed by the almost magical process we know as ‘photosynthesis’ in which water and carbon dioxide are combined to form carbohydrates. Thus, from the air and driven by sunlight, vegetation plucks vegetation. That new vegetation is at the start of the food chain, for its metabolism is used to forge protein and, in our brains, drive imagination. There is probably no more important chemical reaction on Earth. A large proportion of solar radiation is absorbed by the atmosphere. Ozone and oxygen molecules absorb a lot of ultraviolet radiation, and carbon dioxide and water molecules absorb some of the infrared radiation. As a result, plants, algae, and some species of bacteria have to make do with what gets through and evolved apparatus that captures principally visible radiation. The early forms of these organisms stumbled into a way to use the energy of visible radiation, which arrives in the packets we call photons, to extract hydrogen atoms from water molecules and use them and carbon dioxide to build carbohydrate molecules, which include sugars, cellulose, and starch. The oxygen left over from splitting up water for its hydrogen went to waste. Most of the oxygen currently in the atmosphere has been generated and is maintained by photosynthesis since Nature first stumbled on the process about 2 billion years ago and thereby caused the first great pollution. That pollution, in Nature’s characteristically careless and wholly thoughtless and unplanned way, was to turn out to be to our great advantage. Photosynthesis begins in the organelle (a component of a cell) known as a ‘chloroplast’, so you need to poke around inside one if you are to understand what is going on. I shall focus on the light harvesting and the accompanying ‘light reactions’. What follows them, the so called ‘dark reactions’ in which the captured energy is put to use to string CO2 molecules together into carbohydrates, is controlled in a highly complex way by enzymes.
Conference papers on the topic "Put-out chemicals"
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Wang, Junjun, Lin Xue, Zhen Ruan, Peiying Wu, and Lei Zhang. "Consideration of Pressure Vessels Codes and Standards for Fire Emergency Rescue in China: Now and Future." In ASME 2018 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/pvp2018-84059.
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As of the end of 2015, more than 20 transportable pressure vessel leakage accidents were put out every day by fire forces in China. Accidents put out by fire forces are primarily handled in accordance with codes and standards. This paper investigates and analyzes the codes and standards systems for pressure vessel and fire emergency rescue (FER) in China. Existing codes and standards for pressure vessel leakage do not include FER, which results in the firefighters being encumbered when addressing these accidents. Treatment methods for hazardous chemicals are included in the FER codes and stand
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Wei, Xinyu, Hongbin Ma, Xiaowei Xiong, Duanjie Yang, and Zhaorong Shang. "Study on the Nonradioactive Environmental Impact Assessments for Chinese Nuclear Power Plants." In 2013 21st International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/icone21-16121.
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In China, the radioactive environmental impact assessment (EIA) for nuclear power plants (NPPs) had been carried out in detail due to the specific characteristic of radiation and the social universal attention. However, the nonradioactive environment impact assessment for NPP doesn’t get enough attention. This should be improved, since the operation of NPPs could cause some serious nonradioactive environment impacts. Based on the investigation of EIA for American NPPs, the following suggestions were put forward for Chinese EIA: (1) the laws and regulations in China need to be revised for the E
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Pathak, Kedar, and Kendrick Aung. "Numerical Simulations of Dynamics of a Tunnel Fire." In ASME 2004 Heat Transfer/Fluids Engineering Summer Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/ht-fed2004-56154.
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Study of fire in a tunnel is very important for fire safety. Increasing concerns over terrorism put a lot of focus on the fires in tunnels as they are used extensively in mass transit systems all over the world. A lot of experiments have been carried out to study the fire hazard, smoke movement, and the effects of ventilation on fire behavior. In this paper, dynamics of a ventilated tunnel fire have been simulated using Computational Fluid Dynamics (CFD) Software, CFX 5.6, from Ansys Inc. Simulations considers different models of turbulence and radiation heat transfer. Combustion of methane is
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Hassig, Santiago, Dayana Serrano, Cristina Villacres, et al. "Methodology to Remediate and Evaluate Surface Flowline Capacity with Coiled Tubing Cleanouts." In SPE Annual Technical Conference and Exhibition. SPE, 2021. http://dx.doi.org/10.2118/206215-ms.
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Abstract Customers in Ecuador inject the byproduct formation water from production wells into injector wells. A limited injection rate bottlenecks production, which is economically undesirable. Two major contributors limit injection capacity: reservoir injectivity and flowline pressure losses. In the latter case, paraffins, asphaltenes, and scale, collectively referred to as "schmoo," progressively build in the flowline and reduce the internal diameter, limiting flow rate capacity. One cost-effective method to remediate flowlines with significant deposits is coiled tubing (CT) cleanouts. This
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Yu, Xichong, Chunsheng Wang, Qingping Li, et al. "Wax Deposition Prediction and Control in Waxy Crude Oil Tieback Flowlines for South China Sea Deepwater Oil Development." In ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/omae2018-77129.
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Crude oils are generally very complex chemical systems consisting predominantly of hundreds to thousands of hydrocarbon compounds from simple low-molecular-weight paraffin to high-molecular-weight waxes. There are many factors effecting wax deposition such as the fluid composition, pressure and temperature and so on. Wax deposition is complex dynamic process related to transient heat and mass transfer, therefore it is very difficult to predict wax deposition velocity accumulation amounts on the wall in waxy crude oil tieback flowlines. There exist many waxy crude oil tieback flowlines for Sout
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Lemm, Thomas C. "DuPont: Safety Management in a Re-Engineered Corporate Culture." In ASME 1996 Citrus Engineering Conference. American Society of Mechanical Engineers, 1996. http://dx.doi.org/10.1115/cec1996-4202.
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Attention to safety and health are of ever-increasing priority to industrial organizations. Good Safety is demanded by stockholders, employees, and the community while increasing injury costs provide additional motivation for safety and health excellence. Safety has always been a strong corporate value of DuPont and a vital part of its culture. As a result, DuPont has become a benchmark in safety and health performance. Since 1990, DuPont has re-engineered itself to meet global competition and address future vision. In the new re-engineered organizational structures, DuPont has also had to re-