WorldWideScience

Sample records for product gases equals

  1. Chemical production from industrial by-product gases: Final report

    Energy Technology Data Exchange (ETDEWEB)

    Lyke, S.E.; Moore, R.H.

    1981-04-01

    The potential for conservation of natural gas is studied and the technical and economic feasibility and the implementation of ventures to produce such chemicals using carbon monoxide and hydrogen from byproduct gases are determined. A survey was performed of potential chemical products and byproduct gas sources. Byproduct gases from the elemental phosphorus and the iron and steel industries were selected for detailed study. Gas sampling, preliminary design, market surveys, and economic analyses were performed for specific sources in the selected industries. The study showed that production of methanol or ammonia from byproduct gas at the sites studied in the elemental phosphorus and the iron and steel industries is technically feasible but not economically viable under current conditions. Several other applications are identified as having the potential for better economics. The survey performed identified a need for an improved method of recovering carbon monoxide from dilute gases. A modest experimental program was directed toward the development of a permselective membrane to fulfill that need. A practical membrane was not developed but further investigation along the same lines is recommended. (MCW)

  2. An Algorithm to Solve the Equal-Sum-Product Problem

    OpenAIRE

    Nyblom, M. A.; Evans, C. D.

    2013-01-01

    A recursive algorithm is constructed which finds all solutions to a class of Diophantine equations connected to the problem of determining ordered n-tuples of positive integers satisfying the property that their sum is equal to their product. An examination of the use of Binary Search Trees in implementing the algorithm into a working program is given. In addition an application of the algorithm for searching possible extra exceptional values of the equal-sum-product problem is explored after...

  3. Low carbon fuel and chemical production from waste gases

    Energy Technology Data Exchange (ETDEWEB)

    Simpson, S.; Liew, F.M.; Daniell, J.; Koepke, M. [LanzaTech, Ltd., Auckland (New Zealand)

    2012-07-01

    LanzaTech has developed a gas fermentation platform for the production of alter native transport fuels and commodity chemicals from carbon monoxide, hydrogen and carbon dioxide containing gases. LanzaTech technology uses these gases in place of sugars as the carbon and energy source for fermentation thereby allowing a broad spectrum of resources to be considered as an input for product synthesis. At the core of the Lanzatech process is a proprietary microbe capable of using gases as the only carbon and energy input for product synthesis. To harness this capability for the manufacture of a diverse range of commercially valuable products, the company has developed a robust synthetic biology platform to enable a variety of novel molecules to be synthesised via gas fermentation. LanzaTech initially focused on the fermentation of industrial waste gases for fuel ethanol production. The company has been operating pilot plant that uses direct feeds of steel making off gas for ethanol production for over 24 months. This platform technology has been further successfully demonstrated using a broad range of gas inputs including gasified biomass and reformed natural gas. LanzaTech has developed the fermentation, engineering and control systems necessary to efficiently convert gases to valuable products. A precommercial demonstration scale unit processing steel mill waste gases was commissioned in China during the 2{sup nd} quarter of 2012. Subsequent scale-up of this facility is projected for the 2013 and will represent the first world scale non-food based low carbon ethanol project. More recently LanzaTech has developed proprietary microbial catalysts capable of converting carbon dioxide in the presence of hydrogen directly to value added chemicals, where-in CO{sub 2} is the sole source of carbon for product synthesis. Integrating the LanzaTech technology into a number of industrial facilities, such as steel mills, oil refineries and other industries that emit Carbon bearing

  4. Evaluation of the production of gases in the acetobutilic fermentation

    International Nuclear Information System (INIS)

    Duarte Torres, Alberto; Alarcon Granobles, John F; Pineros Forero, Edgar R

    1995-01-01

    The growing costs of the raw materials coming from the petroleum, base of the processes of acetone and butane, they have originated a renovated interest for the fermentative processes. These processes stopped to be applied in 1930 by their unfavorable economic conditions in comparison with the synthetic processes. The Institute of Biotechnology of the National University of Colombia, after considering that the country imports annually around 2500 tons of butanol and 80% of acetone, began in 1987 a program of development of the acetobutilic fermentation starting from cane molasses. In accordance with the study of economic pre feasible for the butanol and acetone production for fermentation, of Serrano and Pinzon, the gases constitute 83% of the total revenues received by sales, while the solvents, ethanol, butanol and acetone, only 16%, reason for which is necessary the evaluation of the gases produced in the fermentation

  5. Process for the removal of acid forming gases from exhaust gases and production of phosphoric acid

    Science.gov (United States)

    Chang, Shih-Ger; Liu, David K.

    1992-01-01

    Exhaust gases are treated to remove NO or NO.sub.x and SO.sub.2 by contacting the gases with an aqueous emulsion or suspension of yellow phosphorous preferably in a wet scrubber. The addition of yellow phosphorous in the system induces the production of O.sub.3 which subsequently oxidizes NO to NO.sub.2. The resulting NO.sub.2 dissolves readily and can be reduced to form ammonium ions by dissolved SO.sub.2 under appropriate conditions. In a 20 acfm system, yellow phosphorous is oxidized to yield P.sub.2 O.sub.5 which picks up water to form H.sub.3 PO.sub.4 mists and can be collected as a valuable product. The pressure is not critical, and ambient pressures are used. Hot water temperatures are best, but economics suggest about 50.degree. C. The amount of yellow phosphorus used will vary with the composition of the exhaust gas, less than 3% for small concentrations of NO, and 10% or higher for concentrations above say 1000 ppm. Similarly, the pH will vary with the composition being treated, and it is adjusted with a suitable alkali. For mixtures of NO.sub.x and SO.sub.2, alkalis that are used for flue gas desulfurization are preferred. With this process, better than 90% of SO.sub.2 and NO in simulated flue gas can be removed. Stoichiometric ratios (P/NO) ranging between 0.6 and 1.5 were obtained.

  6. Sampling of contaminants from product gases of biomass gasifiers

    Energy Technology Data Exchange (ETDEWEB)

    Staahlberg, P.; Lappi, M.; Kurkela, E.; Simell, P.; Oesch, P.; Nieminen, M. [VTT Energy, Espoo (Finland). New Energy Technologies

    1998-12-01

    Reliable sampling and analysis of products from biomass gasification are essential for the successful process development and economical operation of commercial gasifiers. One of the most important and most difficult analytical tasks is to characterise the emissions from the gasifiers. This report presents a review of the sampling and analytical systems employed and developed when doing research on coal and biomass gasification. In addition to the sampling systems published in the literature, experiences obtained in various biomass gasification R and D projects of VTT in 1985-1995 are described. The present sampling methods used for different gas contaminants at VTT are also briefly presented. This report focuses mainly on the measurement of tars, nitrogen compounds and sulphur gases. Isokinetic and non-isokinetic sampling train systems are described and, in addition, special sampling apparatus based on liquid-quenched probe and gas dilution is briefly outlined. Sampling of tars with impinger systems and sampling of heavy tars with filter techniques are described in detail. Separate sampling of particulates is briefly discussed. From inorganic compounds the sampling systems used for H{sub 2}S and other sulphur gases, NH{sub 3} and HCN and HCl are presented. Proper storage of the samples is also included in the report. (orig.) 90 refs.

  7. Impact of greenhouse gases on agricultural productivity in Pakistan

    International Nuclear Information System (INIS)

    Valasai, G.D; Harijan, K.; Uqaili, M.S.; Memon, H.R

    2005-01-01

    Pakistan is an agricultural developing country. About 68% of the country's population resides in rural areas and is mostly linked with agriculture. Agricultural sector contributes more than 25% to GDP, employees about 45% of the labour force and contributes significantly to export earnings of the country. Energy sector is the major source (80%) of emissions of Greenhouse Gases (GHGs). Agriculture and livestock sectors are also responsible for GHGs emissions. The emissions of GHGs results in acid rain and earth's temperature rise (global warming). The destabilization of the global climate destroys natural ecosystem and increases natural disasters, such as violent storms, floods, droughts etc. The acid rain and these natural disasters affect the agricultural productivity. The study indicates that the agricultural productivity per capita in Pakistan decreased continuously during the last two decades. The paper concludes that due to emissions of GHGs, the agricultural productivity is significantly affected in the country. The government should take concrete measures to minimize the emissions of GHGs for increasing the agricultural productivity and reducing other harmful impacts in the country. This paper presents the review and analysis of the effects of GHGs emissions on the agricultural productivity in Pakistan. (author)

  8. All Plasma Products Are Not Created Equal: Characterizing Differences Between Plasma Products

    Science.gov (United States)

    2015-06-01

    Research and the US Department of Defense. The pooling and solvent detergent treatment processes performed to manufacture the Octaplas and Kedrion products ...All plasma products are not created equal: Characterizing differences between plasma products Philip C. Spinella, MD, Elfaridah Frazier, PhD, Heather... products that may affect efficacy and safety. METHODS: Four different plasma products were analyzed to include fresh frozen plasma (FFP), liquid plasma

  9. Greenhouse Gases

    Science.gov (United States)

    ... Production of Hydrogen Use of Hydrogen Greenhouse Gases Basics | | Did you know? Without naturally occurring greenhouse gases, the earth would be too cold to support life as we know it. Without the greenhouse effect, ...

  10. 75 FR 39735 - Mandatory Reporting of Greenhouse Gases From Magnesium Production, Underground Coal Mines...

    Science.gov (United States)

    2010-07-12

    ... sectors of the economy, including fossil fuel suppliers, industrial gas suppliers, and direct emitters of... Part II Environmental Protection Agency 40 CFR Part 98 Mandatory Reporting of Greenhouse Gases From Magnesium Production, Underground Coal Mines, Industrial Wastewater Treatment, and Industrial...

  11. A fast inner product processor based on equal alignments

    Energy Technology Data Exchange (ETDEWEB)

    Smith, S.P.; Torng, H.C.

    1985-11-01

    Inner product computation is an important operation, invoked repeatedly in matrix multiplications. A high-speed inner product processor can be very useful (among many possible applications) in real-time signal processing. This paper presents the design of a fast inner product processor, with appreciably reduced latency and cost. The inner product processor is implemented with a tree of carry-propagate or carry-save adders; this structure is obtained with the incorporation of three innovations in the conventional multiply/add tree: The leaf-multipliers are expanded into adder subtrees, thus achieving an O(log Nb) latency, where N denotes the number of elements in a vector and b the number of bits in each element. The partial products, to be summed in producing an inner product, are reordered according to their ''minimum alignments.'' This reordering brings approximately a 20% savings in hardware-including adders and data paths. The reduction in adder widths also yields savings in carry propagation time for carry-propagate adders. For trees implemented with carry-save adders, the partial product reordering also serves to truncate the carry propagation chain in the final propagation stage by 2 log b - 1 positions, thus significantly reducing the latency further. A form of the Baugh and Wooley algorithm is adopted to implement two's complement notation with changes only in peripheral hardware.

  12. Endogeneous price leadership in a duopoly: equal products, unequal technology

    NARCIS (Netherlands)

    Dastidar, K.G.; Furth, D.

    2005-01-01

    In the present paper we study endogenous price leadership in the context of a homogeneous product Bertrand duopoly model in which the firms have different, strictly convex cost functions. In such a framework it is well known that a simultaneous move price choice game does not have an equilibrium in

  13. Thermal Oxidation of Tail Gases from the Production of Oil-furnace Carbon Black

    Directory of Open Access Journals (Sweden)

    Bosak, Z.

    2009-01-01

    Full Text Available This paper describes the production technology of oil-furnace carbon black, as well as the selected solution for preventing the emissions of this process from contaminating the environment.The products of industrial oil-furnace carbon black production are different grades of carbon black and process tail gases. The qualitative composition of these tail gases during the production of oil-furnace carbon black are: carbon(IV oxide, carbon(II oxide, hydrogen, methane, hydrogen sulfide, nitrogen, oxygen, and water vapor.The quantitative composition and lower caloric value of process tail gases change depending on the type of feedstock used in the production, as well as the type of process. The lower caloric value of process tail gases is relatively small with values ranging between 1500 and 2300 kJ m–3.In the conventional production of oil-furnace carbon black, process tail gases purified from carbon black dust are freely released into the atmosphere untreated. In this manner, the process tail gases pollute the air in the town of Kutina, because their quantitative values are much higher than the prescribed emissions limits for hydrogen sulfide and carbon(II oxide. A logical solution for the prevention of such air pollution is combustion of the process tail gases, i. e. their thermal oxidation. For this purpose, a specially designed flare system has been developed. Consuming minimum amounts of natural gas needed for oxidation, the flare system is designed to combust low caloric process tail gases with 99 % efficiency. Thus, the toxic and flammable components of the tail gases (hydrogen sulfide, hydrogen, carbon(II oxide, methane and other trace hydrocarbons would be transformed into environmentally acceptable components (sulfur(IV oxide, water, carbon(IV oxide and nitrogen(IV oxide, which are in compliance with the emissions limit values prescribed by law.Proper operation of this flare system in the production of oil-furnace carbon black would solve

  14. Oil and gas production equals jobs and revenue

    International Nuclear Information System (INIS)

    Aimes, L.A.

    1994-01-01

    The effects of oil and gas production on jobs and revenue are discussed. Some suggestions are presented that should provide the climate to increase jobs, add revenue and increase efficiency in state agencies within the producing states. Some of the ideas and suggestions are summarized. Some of these ideas include: how to extend the economic limits of marginal properties; how the states can encourage additional drilling without incurring loss of revenue; and the use of investment tax credits

  15. The production and utilization of by-product agricultural fertilizer from flue gases

    International Nuclear Information System (INIS)

    Frank, N.W.; Hirano, S.

    1992-01-01

    The electron-beam process is one of the most effective methods for removing SO 2 and NO X from industrial flue gases and producing a usable by-product. This paper surveys the potential for production and consumption of alternative, usable, commercial by-products, in conjunction with major reductions in the inventory of emissions of SO 2 and NO X . An examination is made of the important limitations in the annual consumptive use or price of and/or net revenues from commonplace, electric utility, by-product types such as gypsum, sulfuric acid, etc. A principal focus of the work is an analysis and quantification of the major large-scale, growing and profitable markets for utility solid wastes that can be generated in agricultural fertilizer forms, including ammonium sulfate and other compounds that are available through stack-gas cleaning operations at large, coal-fired boilers. Cost study data is arranged to define the impact of commercial by-product yield and revenue on the economics of full scale SO 2 and NO X emission reduction activity. (author)

  16. The production and utilization of by-product agricultural fertilizer from flue gases

    International Nuclear Information System (INIS)

    Frank, N.W.; Hirano, S.

    1991-01-01

    The electron-beam process is one of the most effective methods for removing SO 2 and NO x from industrial flue gases and producing a usable by-product. This flue gas treatment consists of adding a small amount of ammonia to the flue gas and irradiating the gas by means of an electron beam. This causes reactions which convert SO 2 and NO x to ammonium sulfate and ammonium nitrate. These salts are then collected from the flue gas by conventional collectors, such as a baghouse or electrostatic precipitator. This paper will describe the potential for production of the fertilizer and will analyze the market potential and consumption of the by-product. A principal focus of the work is an analysis and quantification of the major large-scale, growing and profitable markets for utility solid wastes that can be generated in the form of agricultural fertilizer. Cost study data is arranged to define the impact of commercial by-product field and revenue on the economics of full scale SO 2 and NO x emission reduction activity

  17. Hydrogen Production From catalytic reforming of greenhouse gases ...

    African Journals Online (AJOL)

    ADOWIE PERE

    a fixed bed stainless steel reactor. The 20wt%. ... catalytic activity for hydrogen production with the highest yield and selectivity of 32.5% and 17.6% respectively. © JASEM ... CO2 reforming of methane is however not fully developed ..... Design and preparation of .... catalytic nickel membrane for gas to liquid (GTL) process.

  18. Production of High Value Fluorine Gases for the Semiconductor Industry

    Energy Technology Data Exchange (ETDEWEB)

    Bulko, J. B.

    2003-10-23

    The chemistry to manufacture high purity GeF{sub 4} and WF{sub 6} for use in the semiconductor industry using Starmet's new fluorine extraction technology has been developed. Production of GeF{sub 4} was established using a tube-style reactor system where conversion yields as high as 98.1% were attained for the reaction between and GeO{sub 2}. Collection of the fluoride gas improved to 97.7% when the reactor sweep gas contained a small fraction of dry air (10-12 vol%) along with helium. The lab-synthesized product was shown to contain the least amount of infrared active and elemental impurities when compared with a reference material certified at 99.99% purity. Analysis of the ''as-produced'' gas using ICP-MS showed that uranium could not be detected at a detection limit of 0.019ppm-wt. A process to make WF{sub 6} from WO{sub 2}, and UF{sub 4}, produced a WOF{sub 4} intermediate, which proved difficult to convert to tungsten hexafluoride using titanium fluoride as a fluorinating agent.

  19. Fluoride production in RPCs operated with F-compound gases

    International Nuclear Information System (INIS)

    Aielli, G.; Camarri, P.; Cardarelli, R.; Di Ciaccio, A.; Di Simone, A.; Liberti, B.; Palummo, L.; Santonico, R.

    2006-01-01

    The Resistive Plate Chambers (RPC) are gaseous detectors widely used in LCH experiments for muon trigger systems and time of flight measurement due to their very good time resolution. Gas mixtures with a prevalence of HFC components are generally adjoint used to achieve a lower charge per count an consequently an higher rate capability. The decomposition of HFC under electrical discharge produces a significant concentration of fluorine ions F - that can be detected in the RPC exhausted gas. Due to the high chemical reactivity, this pollutant represents a possible cause of the inner surface damaging if it not quickly removed by the gas flow. In this paper various aspects of this phenomenology are investigated. We measured the F - production rate as a function of the detector counting rate and the working point (both in streamer and avalanche mode). The effect of the addition of 0.5% of SF 6 to the test mixture is also shown. We also extensively investigated the ratio between the F - production associated to a the time integral of the working current

  20. 48 CFR 1910.004-70 - Brand name products or equal.

    Science.gov (United States)

    2010-10-01

    ... 48 Federal Acquisition Regulations System 6 2010-10-01 2010-10-01 true Brand name products or... GOVERNORS ACQUISITION PLANNING SPECIFICATIONS, STANDARDS, AND OTHER PURCHASE DESCRIPTIONS 1910.004-70 Brand... below. (b) Citing brand name products. Brand name or equal purchase descriptions shall cite all brand...

  1. Energy inputs and greenhouse gases emissions in wheat production in Gorgan, Iran

    International Nuclear Information System (INIS)

    Soltani, Afshin; Rajabi, M.H.; Zeinali, E.; Soltani, Elias

    2013-01-01

    The objectives of this study were to analyze energy use and greenhouse gases (GHG) emissions in various wheat production scenarios in north eastern Iran and to identify measures to reduce energy use and GHG emissions. Three high-input, a low-input, a better crop management and a usual production scenarios were included. All activities and production processes were monitored and recorded. Averages of total energy input and output were 15.58 and 94.4 GJ ha −1 , respectively. Average across scenarios, GHG emissions of 1137 kg CO 2 -eq ha −1 and 291 kg CO 2 -eq t −1 were estimated. The key factors relating to energy use and GHG emissions were seedbed preparation and sowing and applications of nitrogen fertilizer. The better crop management production scenario required 38% lower nitrogen fertilizer (and 33% lower total fertilizer), consumed 11% less input energy and resulted in 33% more grain yield and output energy compared to the usual production scenario. It also resulted in 20% less GHG emissions per unit field area and 40% less GHG emissions per ton of grain. It was concluded that this scenario was the cleaner production scenario in terms of energy use and GHG emissions. Measures of improvement in energy use and GHG emission were identified. - Highlights: ► Wheat production scenarios were evaluated for energy use and greenhouse gases emission. ► A better crop management production scenario was the cleaner production scenario. ► Measures to reduce energy use and greenhouse gases emission were identified

  2. Thermally and Chemically responsive nanoporous materials for efficient capture of fission product gases.

    Energy Technology Data Exchange (ETDEWEB)

    Stroeve, Pieter; Faller, Roland

    2018-04-24

    The objective of this project was to develop robust, high-efficiency materials for capture of fission product gases such as He, Xe and Kr in scenarios relevant for both reactor fuels and reprocessing operations. The relevant environments are extremely harsh, encompassing temperatures up to 1500 °C, high levels of radiation, as well as potential exposures to highly-reactive chemicals such as nitric acid and organic solvents such as kerosene. The requirement for nanostructured capture materials is driven in part by the very short (few micron) diffusion distances for product gases in nuclear fuel.1-2 We achieved synthesis, characterization and detailed modeling of the materials. Although not all materials reviewed in this report will be feasible for the ultimate goal of integration in nuclear fuel, nevertheless each material studied has particular properties which will enable an optimized material to be efficiently developed and characterized.

  3. Apparatus for measuring the release of fission gases and other fission products by degassing

    Energy Technology Data Exchange (ETDEWEB)

    Stradal, Karl Alfred

    1970-10-15

    In gas-cooled high-temperature reactors, the fuel is, in general, inserted in the fuel elements in the form of small particles, which are, for example, coated with pyrolytic carbon. The purpose of this coating is to keep the fission products separate from the coolant gas. The further development of these coated particles makes it necessary to check the retention capacity. One possible method of doing this is the degassing test after irradiation in the reactor. An apparatus is described below, which was developed and installed in order to measure to a higher degree of sensitivity and in serial measurements the release of fission gases and sparingly volatile fission products.

  4. Hydrogen production by catalytic processing of renewable methane-rich gases

    Energy Technology Data Exchange (ETDEWEB)

    Muradov, Nazim; Smith, Franklyn; T-Raissi, Ali [Florida Solar Energy Center, University of Central Florida, Cocoa, FL 32922-5703 (United States)

    2008-04-15

    Biomass-derived methane-rich gases such as landfill gas (LFG), biogas and digester gas are promising renewable resources for near-future production of hydrogen. The technical and economical feasibility of hydrogen production via catalytic reforming of LFG and other methane-rich gases is evaluated in this paper. The thermodynamic equilibrium calculations and experimental measurements of reformation of methane-rich CH{sub 4}-CO{sub 2} mixtures over Ni-based catalyst were conducted. The problems associated with the catalyst deactivation due to carbon lay down and effects of steam and oxygen on the process sustainability were explored. Two technological approaches distinguished by the mode of heat input to the endothermic process (i.e., external vs autothermal) were modeled using AspenPlus trademark chemical process simulator and validated experimentally. A 5 kW{sub th} pilot unit for hydrogen production from LFG-mimicking CH{sub 4}-CO{sub 2} mixture was fabricated and operated. A preliminary techno-economic assessment indicates that the liquid hydrogen production costs are in the range of 3.00-7.00 per kilogram depending upon the plant capacity, the process heat input option and whether or not carbon sequestration is included in the process. (author)

  5. Catalytic dry reforming of waste plastics from different waste treatment plants for production of synthesis gases.

    Science.gov (United States)

    Saad, Juniza Md; Williams, Paul T

    2016-12-01

    Catalytic dry reforming of mixed waste plastics, from a range of different municipal, commercial and industrial sources, were processed in a two-stage fixed bed reactor. Pyrolysis of the plastics took place in the first stage and dry (CO 2 ) reforming of the evolved pyrolysis gases took place in the second stage in the presence of Ni/Al 2 O 3 and Ni-Co/Al 2 O 3 catalysts in order to improve the production of syngas from the dry reforming process. The results showed that the highest amount of syngas yield was obtained from the dry reforming of plastic waste from the agricultural industry with the Ni/Al 2 O 3 catalyst, producing 153.67mmol syngas g -1 waste . The addition of cobalt metal as a promoter to the Ni/Al 2 O 3 catalyst did not have a major influence on syngas yield. Overall, the catalytic-dry reforming of waste plastics from various waste treatment plants showed great potential towards the production of synthesis gases. Copyright © 2016 Elsevier Ltd. All rights reserved.

  6. Equality = Inequality

    DEFF Research Database (Denmark)

    Khaled, Rilla

    2011-01-01

    A number of design and development methods, including participatory design and agile software development, are premised on an underlying assumption of equality amongst relevant stakeholders such as designers, developers, product owners, and end users. Equality, however, is not a straightforwardly...... an ethnography conducted during the workshop, including location, cultural and classroom hierarchies, gender, “girl games”, stakeholders and boundaries, and risk mitigation....

  7. PROSPECTS FOR USE OF CONDENSED GASES AND SUPERCRITICAL FLUIDS IN PHYTOCHEMICAL PRODUCTION

    Directory of Open Access Journals (Sweden)

    Demyanenko DV

    2017-03-01

    Full Text Available In the given review article analysis of the literature and patent sources concerning main methods for intensification of extraction processes of medicinal vegetative raw materials – use of condensed gases and supercritical fluids (SCF on more acceptable extractants has been carried out for last 20 years. Urgency of the specified technologies consists in need for replacement of traditional extraction methods on power- and time-saving ones, and also in use of nontoxic, fire-proof and low-boiling solvents because the most of routine organic solvents (ethanol, methanol, acetone, chloroform, ethylacetate, etc. are toxic and/or flammable or expansive and rather hard to evaporate out from extracts obtained. The abovementioned trends are the most universal for intensification of extraction processes and sometimes purification of final or intermediate products acceptable for commercial scale of manufacture. The main advantages and disadvantages of the given methods are compared for different plant species and groups of biologically active substances (BAS. It has been shown that in most cases supercritical СО2 (SC-СО2 are inferior in its dissolving ability to number of condensed gases and, besides, such technology is much more expensive. The range of BAS taken with SC-СО2 is limited to mainly lipophilic compounds because of zero electrical dipole moment of SC-СО2 and its low polarity. As extractants alternative to SC-СО2 with higher dissolving ability SC - ethane, nitrogen monoxide, freons - R134а, R23, R32, R408 and number of others can be used. Also to enlarge range of extractable BAS it is possible to add different cosolvents, mainly ethanol or methanol in quantity up to 20%. At the same time in phytochemical production prospective alternatives to liquid or supercritical СО2 are certain condensed gases with wider range of physico-chemical properties: fluorinated derivatives of hydrocarbons (freons, liquid ammonia, dimethyl ether (DME

  8. Temperature influence on the fast pyrolysis of manure samples: char, bio-oil and gases production

    Science.gov (United States)

    Fernandez-Lopez, Maria; Anastasakis, Kostas; De Jong, Wiebren; Valverde, Jose Luis; Sanchez-Silva, Luz

    2017-11-01

    Fast pyrolysis characterization of three dry manure samples was studied using a pyrolyzer. A heating rate of 600°C/s and a holding time of 10 s were selected to reproduce industrial conditions. The effect of the peak pyrolysis temperature (600, 800 and 1000°C) on the pyrolysis product yield and composition was evaluated. Char and bio-oil were gravimetrically quantified. Scanning electron microscopy (SEM) was used to analyse the char structure. H2, CH4, CO and CO2 were measured by means of gas chromatography (GC). A decrease in the char yield and an increase of the gas yield were observed when temperature increased. From 800°C on, it was observed that the char yield of samples Dig R and SW were constant, which indicated that the primary devolatilization reactions stopped. This fact was also corroborated by GC analysis. The bio-oil yield slightly increased with temperature, showing a maximum of 20.7 and 27.8 wt.% for samples Pre and SW, respectively, whereas sample Dig R showed a maximum yield of 16.5 wt.% at 800°C. CO2 and CO were the main released gases whereas H2 and CH4 production increased with temperature. Finally, an increase of char porosity was observed with temperature.

  9. Temperature influence on the fast pyrolysis of manure samples: char, bio-oil and gases production

    Directory of Open Access Journals (Sweden)

    Fernandez-Lopez Maria

    2017-01-01

    Full Text Available Fast pyrolysis characterization of three dry manure samples was studied using a pyrolyzer. A heating rate of 600°C/s and a holding time of 10 s were selected to reproduce industrial conditions. The effect of the peak pyrolysis temperature (600, 800 and 1000°C on the pyrolysis product yield and composition was evaluated. Char and bio-oil were gravimetrically quantified. Scanning electron microscopy (SEM was used to analyse the char structure. H2, CH4, CO and CO2 were measured by means of gas chromatography (GC. A decrease in the char yield and an increase of the gas yield were observed when temperature increased. From 800°C on, it was observed that the char yield of samples Dig R and SW were constant, which indicated that the primary devolatilization reactions stopped. This fact was also corroborated by GC analysis. The bio-oil yield slightly increased with temperature, showing a maximum of 20.7 and 27.8 wt.% for samples Pre and SW, respectively, whereas sample Dig R showed a maximum yield of 16.5 wt.% at 800°C. CO2 and CO were the main released gases whereas H2 and CH4 production increased with temperature. Finally, an increase of char porosity was observed with temperature.

  10. Production of ethanol from refinery waste gases. Phase 2, technology development, annual report

    Energy Technology Data Exchange (ETDEWEB)

    Arora, D.; Basu, R.; Phillips, J.R.; Wikstrom, C.V.; Clausen, E.C.; Gaddy, J.L.

    1995-07-01

    Oil refineries discharge large volumes of H{sub 2}, CO, and CO{sub 2} from cracking, coking, and hydrotreating operations. This program seeks to develop a biological process for converting these waste gases into ethanol, which can be blended with gasoline to reduce emissions. Production of ethanol from all 194 US refineries would save 450 billion BTU annually, would reduce crude oil imports by 110 million barrels/year and emissions by 19 million tons/year. Phase II efforts has yielded at least 3 cultures (Clostridium ljungdahlii, Isolate O-52, Isolate C-01) which are able to produce commercially viable concentrations of ethanol from CO, CO{sub 2}, and H{sub 2} in petroleum waste gas. Single continuous stirred tank reactor studies have shown that 15-20 g/L of ethanol can be produced, with less than 5 g/L acetic acid byproduct. Culture and reactor optimization in Phase III should yield even higher ethanol concentrations and minimal acetic acid. Product recovery studies showed that ethanol is best recovered in a multi-step process involving solvent extraction/distillation to azeotrope/azeotropic distillation or pervaporation, or direct distillation to the azeotrope/azeotropic distillation or pervaporation. Projections show that the ethanol facility for a typical refinery would require an investment of about $30 million, which would be returned in less than 2 years.

  11. The production and certification of a plutonium equal-atom reference material: NBL CRM 128

    International Nuclear Information System (INIS)

    Crawford, D.W.

    1990-07-01

    This report describes the design, production, and certification of the New Brunswick Laboratory plutonium equal-atom certified reference material (CRM), NBL CRM 128. The primary use of this CRM is for the determination of bias corrections encountered in the operation of a mass spectrometer. This reference material is available to the US Department of Energy contractor-operated and government-operated laboratories, as well as to the international nuclear safeguards community. The absolute, or unbiased, certified value for the CRM's Pu-242/Pu-239 ratio is 1.00063 ± 0.00026 (95% confidence interval) as of October 1, 1984. This value was obtained through the quantitative blending of high-purity, chemically and isotopically characterized separated isotopes, as well as through intercomparisons of CRM samples with calibration mixtures using thermal ionization mass spectrometry. 32 tabs

  12. Report of working committee 2 production of manufactured gases; Rapport du comite de travail 2 production de gaz manufactures

    Energy Technology Data Exchange (ETDEWEB)

    Lau, F.S.

    2000-07-01

    The Committee's work during this triennium focused on 4 topic areas. They are: the potential of hydrogen in meeting long term energy demands, future development prospects for manufactured gas units/gasification of coal, biomass, and opportunity materials for the production of electricity and chemicals, recovery of methane from coal seams, and update on management of contaminated gas sites. This report presents the status and the potentials of present and future opportunities for the gas industry in the areas of manufactured gases including hydrogen and coal bed/mine methane. The idea of hydrogen as an energy carrier is getting increased attention these days for its promise of super clean emissions at the point of use. The development of fuel cells for stationary and mobile applications has highlighted the need of hydrogen production, storage and infrastructure. Hydrogen appears destined to be a major energy source of the future. The industry for gasification is growing, particularly for the production of electricity and chemicals from opportunity fuels, such as petroleum coke from refineries. Coal and biomass are also getting increased interests due to their promise of high efficiency and lower emissions. Methane from coal mines is also getting increased attention due not only to its environmental benefits but also to its favorable own economics. The future of the energy industry will be price and environmentally driven. A well-informed gas industry will be in a position to continue to play a major role in the future of the energy industry world-wide. (author)

  13. Production, consumption and transport of gases in deep geological repositories according to the Swiss disposal concept

    International Nuclear Information System (INIS)

    Diomidis, N; Cloet, V.; Leupin, O.X.; Marschall, P.; Poller, A.; Stein, M.

    2016-12-01

    In a deep geological repository for radioactive waste, in absence of oxygen and in presence of water, corrosion of various metals and alloys will lead to the formation of hydrogen. If present, organic materials may slowly degrade and generate carbon dioxide, methane and other gaseous species. Depending on local conditions, gaseous species can be consumed by chemical reactions and by microbial activity. If the resulting rate of gas generation exceeds the rate of migration of dissolved gas molecules in the pores of the engineered barriers or the host rock, the solubility limit of the gas will eventually be exceeded and the formation of a discrete gas phase will occur. Gases could continue to accumulate until the pressure becomes sufficient to be released in gaseous form. This report deals with the evolution of gas-related processes that can influence the long-term behaviour and safety of low- and intermediate-level waste (L/ILW) and high-level waste (HLW) repositories in Opalinus Clay. The main aim is to present a synthesis of processes and phenomena related to repository-produced gases and to assess their influence on repository performance. A current overview of gas sources, reactions and interactions, generation, consumption, and transport is provided. Furthermore, current scientific understanding is used to define safety function indicators and criteria, which are employed to evaluate the potential influence of repository-generated gas on safety-relevant properties of engineered and natural barriers. The assessment of gas generation, consumption and transport is addressed separately for the HLW and the L/ILW deep geological repositories. The employed methodology, which is common for both repository types, consists of the description and quantification of the potential gas sources, which include the waste, barrier components such as disposal canisters and other gas-generating repository components, and of the processes and reactions leading to the generation or

  14. Production, consumption and transport of gases in deep geological repositories according to the Swiss disposal concept

    Energy Technology Data Exchange (ETDEWEB)

    Diomidis, N; Cloet, V.; Leupin, O.X.; Marschall, P.; Poller, A.; Stein, M.

    2016-12-15

    In a deep geological repository for radioactive waste, in absence of oxygen and in presence of water, corrosion of various metals and alloys will lead to the formation of hydrogen. If present, organic materials may slowly degrade and generate carbon dioxide, methane and other gaseous species. Depending on local conditions, gaseous species can be consumed by chemical reactions and by microbial activity. If the resulting rate of gas generation exceeds the rate of migration of dissolved gas molecules in the pores of the engineered barriers or the host rock, the solubility limit of the gas will eventually be exceeded and the formation of a discrete gas phase will occur. Gases could continue to accumulate until the pressure becomes sufficient to be released in gaseous form. This report deals with the evolution of gas-related processes that can influence the long-term behaviour and safety of low- and intermediate-level waste (L/ILW) and high-level waste (HLW) repositories in Opalinus Clay. The main aim is to present a synthesis of processes and phenomena related to repository-produced gases and to assess their influence on repository performance. A current overview of gas sources, reactions and interactions, generation, consumption, and transport is provided. Furthermore, current scientific understanding is used to define safety function indicators and criteria, which are employed to evaluate the potential influence of repository-generated gas on safety-relevant properties of engineered and natural barriers. The assessment of gas generation, consumption and transport is addressed separately for the HLW and the L/ILW deep geological repositories. The employed methodology, which is common for both repository types, consists of the description and quantification of the potential gas sources, which include the waste, barrier components such as disposal canisters and other gas-generating repository components, and of the processes and reactions leading to the generation or

  15. Industrial gases

    International Nuclear Information System (INIS)

    Hunter, D.; Jackson, D.; Coeyman, M.

    1993-01-01

    Industrial gas companies have fought hard to boost sales and hold margins in the tough economic climate, and investments are well down from their 1989-'91 peak. But 'our industry is still very strong long term' says Alain Joly, CEO of industry leader L'Air Liquide (AL). By 1994, if a European and Japanese recovery follows through on one in the U.S., 'we could see major [investment] commitments starting again,' he says. 'Noncryogenic production technology is lowering the cost of gas-making possible new applications, oxygen is getting plenty of attention in the environmental area, and hydrogen also fits into the environmental thrust,' says Bob Lovett, executive v.p./gases and equipment with Air Products ampersand Chemicals (AP). Through the 1990's, 'Industrial gases could grow even faster than in the past decade,' he says. Virtually a new generation of new gases applications should become reality by the mid-1990s, says John Campbell, of industry consultants J.R. Campbell ampersand Associates (Lexington, MA). Big new oxygen volumes will be required for powder coal injection in blast furnaces-boosting a steel mill's requirement as much as 40% and coal gasification/combined cycle (CGCC). Increased oil refinery hydroprocessing needs promise hydrogen requirements

  16. CoJet technology for oxygen injection injection in EAFS - industrial gases supply and customers productivity improvements; Tecnologia CoJet para injecao de oxigenio em FEAS - fornecimento de gases e aumento da produtividade dos clientes

    Energy Technology Data Exchange (ETDEWEB)

    Marques, Izaias Lucas; Zagury, Pedro Athias [White Martins Gases Industriais Ltda., Rio de Janeiro, RJ (Brazil)

    2010-07-01

    PRAXAIR is one of the largest industrial gases producers of the World, being present in more than 40 countries and strongly connected to the steel industry. PRAXAIR has experience to supply products and services to all kinds of steel mills. Several technologies developed by the Company, such as CoJet (a system to coherent oxygen jet injection in EAF and BOF furnaces), Slag Splashing (splashing slag to cover BOF furnaces walls increasing refractory wear campaign life), AOD (a process for specialty steel production) and others, are currently in commercial operation in different parts of the world. In Brazil, Praxair is the owner of White Martins, the largest industrial gases company in South America, present in nine countries of the continent. Company's portfolio includes atmospheric gases, carbonic gas production, acetylene, hydrogen, specialty and health and care gases, mixtures for welding, gas seamless steel cylinders, applications equipment, and storage and gases transportation. The Company also operates a natural gas liquefaction unit. In addition to technologies and process, Praxair / White Martins can also supply solutions for measurement, control and gases injection, according to strict safety and quality standards. The present work has the objective to show the benefits of the CoJet EAF System, oxygen injectors positioned in the furnace walls. In 2009, two systems have been installed in South American mills and the results achieved will be following discussed. (author)

  17. Catalytic decomposition of nitrous oxide from nitric acid production tail gases. Investigation of inhibition effects. Executive summary

    International Nuclear Information System (INIS)

    Mul, G.; Perez-Ramirez, J.; Xu, Xiaoding; Oonk, H.; Yakovlev, A.

    2001-06-01

    Nitric acid production is an important source of nitrous oxide, one of the green-house gases. Catalytic decomposition of N2O in nitric acid tail-gases might be a possibility for emission reduction, but technology is not yet available. As a part of development of suitable catalytic systems, research was performed, aiming at: gaining an improved understanding of catalytic decomposition of N2O and the inhibiting effects of NO, NO2, H2O and O2; and preparing a 'go-no go' decision whether or not to proceed with subsequent re-search and development and if yes, to indicate what technology further development should aim for. Due to the presence of NOx and water in the nitric acid tail gases, catalytic decomposition proves not to be feasible at temperatures below 350C. At higher temperatures possibilities do exist and a number of promising catalysts are identified. These are active (80 - 100 % conversion) in the temperature range of 400 - 500C and under simulated tail gas conditions. Considering process conditions only (temperatures and composition of the tail-gases), the catalysts studied (pref. the Rh/Al2O3 types) could be in principle applied successfully in all Dutch nitric acid plants

  18. Degradation Mechanism of Poly(Ether-Urethane) Estane Induced by High Energy Radiation (III) : Radiolytic Gases and Water Soluble Products

    International Nuclear Information System (INIS)

    Dannoux, A.

    2006-01-01

    Within the framework of nuclear waste management, there is interest in the prediction of long-term behaviour of organic materials subjected to high energy radiation. Once organic waste has been stored, gases and low molecular products might be generated from materials irradiated by radionuclides. Long-term behaviour of organic material in nuclear waste has several common concerns with radiation ageing of polymers. But a more detailed description of the chemical evolution is needed for nuclear waste management. In a first approach, an extensive work on radiation ageing is used to identify the different processes encountered during the degradation of a polyurethane, including oxidation dose rate-effects and influence of dose on the oxidation mechanism. In a second approach, a study is performed to identify and quantify gases and possible production of water soluble chemical complexing agents which might enhance radionuclides migration away from the repository. In this work, we present results concerning the production of radiolytic gases and the formation of water soluble oligomers reached with leaching tests Films were made from a poly(ether-urethane) synthesized from methylene bis(p-phenyl isocyanate) (MDI) and poly(tetramethylene glycol) (PTMG) with 1,4 butanediol (BD) and were irradiated by high-energy electron beam to cover a wide doses range and by γ rays to determine the formation/consumption yields of gases. They were measured by mass spectrometry and gas-chromatography/mass spectrometry (GC/MS). The migration of water soluble oligomers in water was reached by measuring the weight loss versus leaching time. The identification of oligomers was performed by using a mass spectrometry with an electrospray ionisation interface (ESI-MS-MS). The analysis of radiolytic gases indicates the formation of H 2 , CO 2 and CO with respective radiolytic yields of 1, 0.5 and 0.3 molecule/100 eV. The consumption of O 2 is evaluated to 6 molecules/100 eV. For absorbed doses

  19. Isotope reversals in hydrocarbon gases of natural shale systems and well head production data

    Energy Technology Data Exchange (ETDEWEB)

    Berner, U.; Schloemer, S.; Stiller, E. [Bundesanstalt fuer Geowissenschaften und Rohstoffe (BGR), Hannover (Germany); Marquardt, D. [Rijksuniversiteit Utrecht (Netherlands)

    2013-08-01

    Relationships between gas geochemical signatures and the thermal maturity of source rocks containing aquatic organic matter are based on on pyrolysis experiments and have been successfully used in conventional hydrocarbon exploration since long. We demonstrate how these models can be applied to the evaluation of unconventional shale resources. For this purpose hydrocarbon gases have been extracted from low and high mature source rocks (type II kerogens) using laboratory desorption techniques. We determined the molecular composition of the gases as well as the carbon isotope ratios of methane to propane. In the extracted gases we observe an increase of {sup 13}C content in methane with increasing dry gas ratio (C1/{Sigma}C1-6). The carbon isotope ratios of ethane and propane initially increase with increasing dryness but start to become isotopically lighter above a dry gas ratio of 0.8. We show that oil-to-gas cracking explains the observed gas geochemical data, and that mixing between gases from different processes is a key factor to describe natural hydrocarbon systems of shales. However, data from published case studies using well head gases which show 'isotope roll-over' effects indicate that the isotopic reversal observed in well head samples deviate from those observed in natural shale systems in a fundamental way. We show that isotope reversals related to well head gases are best explained by an additional isotope fractionation effect induced through hydraulic fracturing and gas migration from the shale to the well head. Although, this induced isotope fractionation is an artifact which obscures isotopic information of natural systems to a large extend, we suggest a simple classification scheme which allows distinguishing between hot and cool spot areas using well head or mud line gas data. (orig.)

  20. From equality to 'equality'

    Directory of Open Access Journals (Sweden)

    Panov Slobodan

    2009-01-01

    Full Text Available Pursuant to lucid statement of a Serbian academician that the ideals of mankind have always been justice, freedom, virtues and that life was less noble, the work analyses whether there is both 'equality', as morosofo exist (stupid wise men, profitable altruists and evil humanists and admirers of freedom of monistic thinking. Is there a dialectics: from equality to 'equality'? At the time of profitable altruists, evil humanists and excellent actors of virtues, it is worthwhile to remember Nietzsche's attitude about the pose of morality: subordination to morality may be slavish, proud, sordid, and resigned. In theological literature it is said that both patriarchate and matriarchate are the same denial of thankful supplemental gifts to a man and a woman. There is no love and sacrifice in government. There is no fortune in slavery, but there is no happiness in mastery either. Can a 'hymn' of individualism, with empty concepts and legal formulations that encourage and sharpen the conflict of family members be an introductory tact of the dictatorship ballade? Is the projection of conflicts into a family and micro-environment a project against emotional solidarity, strength, independence, courage and will for freedom? If we cannot rely upon family are we strong enough to confront totalitarian in democratic?.

  1. Optimization of surface condensate production from natural gases using artificial intelligence

    Energy Technology Data Exchange (ETDEWEB)

    Al-Farhan, Farhan A.; Ayala, Luis F. [Petroleum and Natural Gas Engineering Program, The Pennsylvania State University 122 Hosler Building, University Park, PA 16802-5001 (United States)

    2006-08-15

    The selection of operating pressures in surface separators can have a remarkable impact on the quantity and quality of the oil produced at the stock tank. In the case of a three-stage separation process, where the operating pressures of the first and third stage (stock tank) are usually set by process considerations, the middle-stage separator pressure becomes the natural variable that lends itself to optimization. Middle-stage pressure is said to be optimum when it maximizes liquid yield in the production facility (i.e., CGR value reaches a maximum) while enhancing the quality of the produced oil condensate (i.e., API is maximized). Accurate thermodynamic and phase equilibrium calculations, albeit elaborate and computer-intensive, represent the more rigorous and reliable way of approaching this optimization problem. Nevertheless, empirical and quasi-empirical approaches are typically the norm when it comes to the selection of the middle-stage surface separation pressure in field operations. In this study, we propose the implementation of Artificial Neural Network (ANN) technology for the establishment of an expert system capable of learning the complex relationship between the input parameters and the output response of the middle-stage optimization problems via neuro-simulation. During the neuro-simulation process, parametric studies are conducted to identify the most influential variables in the thermodynamic optimization protocol. This study presents a powerful optimization tool for the selection of the optimum middle-stage separation pressure, for a variety of natural gas fluid mixtures. The developed ANN is able to predict operating conditions for optimum surface condensate recovery from typical natural gases with condensate contents between 10

  2. Measurement of the Residual Gases O2 and CO2 in Meat Products Packed in Modified Atmosphere

    Directory of Open Access Journals (Sweden)

    Jozef Čapla

    2013-02-01

    Full Text Available Nowadays, consumers have increased demand for quality and food safety and also rising demand for natural foods without chemical additives. There are many ways to presserve freshness of these products, one of them is modified atmosphere packaging, which can mean elimination and/or replacement surrounding the product before closing it in package with a mixture of gases other than the original ambient air atmosphere. for replacement of atmosphere are generally used three types of gases such as carbon dioxide, oxygen and nitrogen. this type of packaging is often used for meat and meat products, which belongs to foods that are under normal conditions perishable and for increasing the shelf life of meat products are also used various other preservation methods or their combinations. Packaging of meat and meat products in modified atmosphere is usually made with a high content of carbon dioxide, which has good bacteriostatic and fungistatic effect and is also an effective mean for increasing the shelf life of packaged products during storage and sale.

  3. Emissions of Non-CO2 Greenhouse Gases From the Production and Use of Transportation Fuels and Electricity

    OpenAIRE

    Delucchi, Mark

    1997-01-01

    The use of energy accounts for a major fraction of all anthropogenic emissions of greenhouse gases (IPCC, 1995) , and in most industrialized countries the use of transportation fuels and electricity accounts for a major fraction of all energy-related emissions. In the transportation sector alone, emissions of carbon dioxide (CO2) from the production and use of motor-vehicle fuels account for as much as 30% of CO2 emissions from the use of all fossil fuels (DeLuchi, 1991). The production and...

  4. Microbial production and consumption of greenhouse gases: methane, nitrogen oxides, and halomethanes

    Energy Technology Data Exchange (ETDEWEB)

    Rogers, J.E.; Whitman, W.B.

    1991-01-01

    The aim is to provide an overview of the biological processes that contribute to the increase in trace gases (CH[sub 4], N[sub 2]O, NO[sub x] and halocarbons) in the atmosphere. Physical and chemical processes are discussed as they relate to biological processes. It is an introduction to biological processes that contribute to changes in global climate and processes that can be influenced by biofeedback mechanisms as climate changes occur.

  5. Noble Gases

    Science.gov (United States)

    Podosek, F. A.

    2003-12-01

    The noble gases are the group of elements - helium, neon, argon, krypton, xenon - in the rightmost column of the periodic table of the elements, those which have "filled" outermost shells of electrons (two for helium, eight for the others). This configuration of electrons results in a neutral atom that has relatively low electron affinity and relatively high ionization energy. In consequence, in most natural circumstances these elements do not form chemical compounds, whence they are called "noble." Similarly, much more so than other elements in most circumstances, they partition strongly into a gas phase (as monatomic gas), so that they are called the "noble gases" (also, "inert gases"). (It should be noted, of course, that there is a sixth noble gas, radon, but all isotopes of radon are radioactive, with maximum half-life a few days, so that radon occurs in nature only because of recent production in the U-Th decay chains. The factors that govern the distribution of radon isotopes are thus quite different from those for the five gases cited. There are interesting stories about radon, but they are very different from those about the first five noble gases, and are thus outside the scope of this chapter.)In the nuclear fires in which the elements are forged, the creation and destruction of a given nuclear species depends on its nuclear properties, not on whether it will have a filled outermost shell when things cool off and nuclei begin to gather electrons. The numerology of nuclear physics is different from that of chemistry, so that in the cosmos at large there is nothing systematically special about the abundances of the noble gases as compared to other elements. We live in a very nonrepresentative part of the cosmos, however. As is discussed elsewhere in this volume, the outstanding generalization about the geo-/cosmochemistry of the terrestrial planets is that at some point thermodynamic conditions dictated phase separation of solids from gases, and that the

  6. Fuel gases

    International Nuclear Information System (INIS)

    Anon.

    1996-01-01

    This paper gives a brief presentation of the context, perspectives of production, specificities, and the conditions required for the development of NGV (Natural Gas for Vehicle) and LPG-f (Liquefied Petroleum Gas fuel) alternative fuels. After an historical presentation of 80 years of LPG evolution in vehicle fuels, a first part describes the economical and environmental advantages of gaseous alternative fuels (cleaner combustion, longer engines life, reduced noise pollution, greater natural gas reserves, lower political-economical petroleum dependence..). The second part gives a comparative cost and environmental evaluation between the available alternative fuels: bio-fuels, electric power and fuel gases, taking into account the processes and constraints involved in the production of these fuels. (J.S.)

  7. Extraction with supercritical gases

    Energy Technology Data Exchange (ETDEWEB)

    Schneider, G M; Wilke, G; Stahl, E

    1980-01-01

    The contents of this book derives from a symposium on the 5th and 6th of June 1978 in the ''Haus der Technik'' in Essen. Contributions were made to separation with supercritical gases, fluid extraction of hops, spices and tobacco, physicochemical principles of extraction, phase equilibria and critical curves of binary ammonia-hydrocarbon mixtures, a quick method for the microanalytical evaluation of the dissolving power of supercritical gases, chromatography with supercritical fluids, the separation of nonvolatile substances by means of compressed gases in countercurrent processes, large-scale industrial plant for extraction with supercritical gases, development and design of plant for high-pressure extraction of natural products.

  8. Plant for the production of activated carbon and electric power from the gases originated in gasification processes

    International Nuclear Information System (INIS)

    Ganan, J.; Turegano, J.P.; Calama, G.; Roman, S.; Al-Kassir, A.

    2006-01-01

    The development of the countries involves a high energy demand; however, the energetic resources used by the moment are not renewable. Events like the energetic crisis of 1973, the continuous geopolitic clashes in energetic resource-rich areas, and the global environmental deterioration as a consequence of the industrial activity taking place in last century, make obvious the need of searching new sources of energy [1]. One of these sources is the obtainment of energy from biomass exploitation. The use of this raw material involves advantages in the emission of low quantities of contaminants to the atmosphere and its renewable character. Until now, the main drawback of this source is its lack of viability when trying to obtain electric power from biomass, due to the use of systems composed of a boiler and a steam turbine (which offer low operative flexibility), which are not rentable in such a competitive market as it is, currently, the energetic one. Nowadays, the use of internal combustion engines, combined with biomass gasifiers, allows rapid connection-disconnection of the plant (aproximately of five minutes), which confers a big flexibility to the system and, as a consequence, a better exploitation of the plant in maximum energetic consumption hours. It also has the advantage of establishing a co-generation system since the gases are generated at a high temperature, 800 o C [2]. With this view, the aim of this work has focused in the re-design of a gasification plant for the production of activated carbons, from biomassic residues, for the energetic exploitation of the combustible gases produced during the pyrolytic process (H 2 , CO, CH 4 , C 2 H 2 , C 2 H 4 , C 2 H 6 ), since these gases are currently burnt in a torch in the plant. The idea of designing the activated carbon production plant arose from the need of managing the biomass residues (olive wastes) generated by the firm Euroliva-Azeites e Oleos Alimentares SA, located in Alto Alentejo, in the city

  9. Plant for the production of activated carbon and electric power from the gases originated in gasification processes

    Energy Technology Data Exchange (ETDEWEB)

    Ganan, J.; Turegano, J.P.; Calama, G. [Area de Engenharia. Escola Superior de Tecnologia e Gestao. Instituto Politecnico de Portalegre, Lugar da Abadesa, Apartado 148, 7301 Portalegre Codex (Portugal); Roman, S.; Al-Kassir, A. [Departamento de Ingenieria Quimica y Energetica, Universidad de Extremadura, Badajoz, 06071 (Spain)

    2006-01-15

    The development of the countries involves a high energy demand; however, the energetic resources used by the moment are not renewable. Events like the energetic crisis of 1973, the continuous geopolitic clashes in energetic resource-rich areas, and the global environmental deterioration as a consequence of the industrial activity taking place in last century, make obvious the need of searching new sources of energy [1]. One of these sources is the obtainment of energy from biomass exploitation. The use of this raw material involves advantages in the emission of low quantities of contaminants to the atmosphere and its renewable character. Until now, the main drawback of this source is its lack of viability when trying to obtain electric power from biomass, due to the use of systems composed of a boiler and a steam turbine (which offer low operative flexibility), which are not rentable in such a competitive market as it is, currently, the energetic one. Nowadays, the use of internal combustion engines, combined with biomass gasifiers, allows rapid connection-disconnection of the plant (aproximately of five minutes), which confers a big flexibility to the system and, as a consequence, a better exploitation of the plant in maximum energetic consumption hours. It also has the advantage of establishing a co-generation system since the gases are generated at a high temperature, 800 {sup o}C [2]. With this view, the aim of this work has focused in the re-design of a gasification plant for the production of activated carbons, from biomassic residues, for the energetic exploitation of the combustible gases produced during the pyrolytic process (H{sub 2}, CO, CH{sub 4}, C{sub 2}H{sub 2}, C{sub 2}H{sub 4}, C{sub 2}H{sub 6}), since these gases are currently burnt in a torch in the plant. The idea of designing the activated carbon production plant arose from the need of managing the biomass residues (olive wastes) generated by the firm Euroliva-Azeites e Oleos Alimentares SA

  10. Does environmental friendliness equal healthiness? Swiss consumers' perception of protein products.

    Science.gov (United States)

    Lazzarini, Gianna A; Zimmermann, Jasmin; Visschers, Vivianne H M; Siegrist, Michael

    2016-10-01

    Food production and consumption have major impacts on the environment. At the same time, changes in human diets worldwide are increasingly leading to health problems. Both issues are highly influenced by consumers' everyday food choices and could be addressed by reducing consumption of meat and other animal products. To promote sustainable food consumption, we need to know how consumers perceive the environmental friendliness and healthiness of food products, on which criteria they base their evaluations of environmental friendliness and healthiness, and how their estimations relate to life cycle assessments and nutrient profiling. We presented 30 protein products, which varied in provenance, production methods, and processing, to 85 participants from Switzerland. They were asked to sort the products once according to their perceived environmental friendliness and once according to their perceived healthiness. The mean distances between the products were compared to the products' life cycle assessments and nutrient profiles. The results showed that perceived environmental friendliness and healthiness are highly correlated. The main predictors of the products' perceived environmental friendliness were product category, presence of an organic label, and provenance; and for perceived healthiness, these predictors were product category, fat content, processing, and presence of an organic label. Environmental friendliness and healthiness estimations were significantly correlated to the life cycle assessments and the nutrient profiles of the products, respectively. Hence, to promote healthy and environmentally friendly food choices, motivators related to environmental friendliness and healthiness could be used in synergy. Awareness about meat's environmental impact should be increased and better information is needed for consumers to make an accurate environmental impact and healthiness assessments of protein products. Copyright © 2016 Elsevier Ltd. All rights reserved.

  11. Ergonomics at Volkswagen Brasil. Multidisciplinary work to equalize health, productivity and quality.

    Science.gov (United States)

    Filus, Rodrigo; Wruca, Rodrigo; Charleaux, Vanessa; Ortega, Auro; Ferreira, Claudio; Jesus, Leandro; Stramari, Anderson; Neufel, Michel; Maia, Uyara

    2012-01-01

    Following the technological developments and presented to the multidisciplinary processes as automakers, Volkswagen Brazil, represented by its ergonomists, through this paper, shows the importance of ergonomic efficiency of management applied to various levels of life of a product, since its creation to its final implementation on production lines.The preventive work of ergonomists during the processes leading to production of a vehicle is accomplished through assessments on a simulated system called the Digital Factory. Since the initial stages to final product delivery there is a need for a multidisciplinary aligning the concepts of ergonomics, productivity and quality of product. Industrial Engineering, Process Engineering, ergonomists and workers are involved in the analysis made through the Workshop's showing the importance of discussion between the various users of the systems. The processes of series are also equipped with a set of certifications flow of job and planned audits on items that describe processes and applied ergonomics.

  12. Condensating flue gases of light oil boilers: Influence on emissions and on the efficiency of the heat production

    International Nuclear Information System (INIS)

    Lehtinen, M.; Fogelholm, C.J.

    1995-01-01

    The aim of the research was to find out the influence of condensating the flue gases on emissions and on the efficiency of the heat production. The installations that were examined were a heat pump - boiler combination. Comparable research has not been done in Finland before. For the measurements the test instrument was installed in a laboratory hall. It consisted of a 45 kW boiler and a 10 kW (heating power) heat pump and a flow controlled room. The test instrument was equipped with thermal and current sensors and flue gas analysators. The fuel used in tests was a typical light fuel oil. Sulphur content of the oil was 0,03 percentage by weight Reduction of the emissions was researched in two ways, analysing the flue gases and the condensation water. Following compounds in the flue gases were measured: NO x , O 2 SO 2 , CO and CO 2 . Sulphur, metals and pH-value were analysed from the condensation water. The content of sulphur and metals in condense water were compared to content of the same components in oil. Reduction of the sulphur was under 30 %. As the balance limit for defining the efficiency was chosen the flow controlled room. Measurements were done with two different heat loads. At the first test drive average heat load was about 19 kW. Therefore the burner was on for about five minutes and off for about 15 minutes. The heat pump was running continuously. At the second test drive the average heat load was about 50 kW, therefore both the burner and the heat pump were on all the time The lower heat value of fuel was used on the efficiency calculation At the first test drive efficiency was 1,364 and at the second test drive efficiency was 1,048. Out door temperature was +12 deg C (author)

  13. Electronegative gases

    International Nuclear Information System (INIS)

    Christophorou, L.G.

    1981-01-01

    Recent knowledge on electronegative gases essential for the effective control of the number densities of free electrons in electrically stressed gases is highlighted. This knowledge aided the discovery of new gas dielectrics and the tailoring of gas dielectric mixtures. The role of electron attachment in the choice of unitary gas dielectrics or electronegative components in dielectric gas mixtures, and the role of electron scattering at low energies in the choice of buffer gases for such mixtures is outlined

  14. Does Education Raise Productivity and Wages Equally? The Moderating Roles of Age, Gender and Industry

    OpenAIRE

    Rycx, Francois; Saks, Yves; Tojerow, Ilan

    2015-01-01

    The labour market situation of low-educated people is particularly critical in most advanced economies, especially among youngsters and women. Policies aiming to increase their employability either try to foster their productivity and/or to decrease their wage cost. Yet, the evidence on the misalignment between education-induced productivity gains and corresponding wage cost differentials is surprisingly thin, inconclusive and subject to various econometric biases. We investigate this issue u...

  15. Greenhouse Gases

    Science.gov (United States)

    ... also produced by human activities. Some, such as industrial gases, are exclusively human made. What are the types ... Carbon dioxide (CO2) Methane (CH4) Nitrous oxide (N2O) Industrial gases: Hydrofluorocarbons (HFCs) Perfluorocarbons (PFCs) Sulfur hexafluoride (SF6 Nitrogen ...

  16. Is the demand-pull driver equally crucial for product vs process innovation?

    NARCIS (Netherlands)

    Dawid, Herbert; Pellegrino, Gabriele; Vivarelli, Marco

    2017-01-01

    While the extant innovation literature has provided extensive evidence of the so-called "demand-pull" effect, the possible diverse impact of demand evolution on product vs process innovation activities has not been yet investigated. This paper develops a formal model predicting a larger inducing

  17. Predicted versus observed cosmic-ray-produced noble gases in lunar samples: improved Kr production ratios

    International Nuclear Information System (INIS)

    Regnier, S.; Hohenberg, C.M.; Marti, K.; Reedy, R.C.

    1979-01-01

    New sets of cross sections for the production of krypton isotopes from targets of Rb, Sr, Y, and Zr were constructed primarily on the bases of experimental excitation functions for Kr production from Y. These cross sections were used to calculate galactic-cosmic-ray and solar-proton production rates for Kr isotopes in the moon. Spallation Kr data obtained from ilmenite separates of rocks 10017 and 10047 are reported. Production rates and isotopic ratios for cosmogenic Kr observed in ten well-documented lunar samples and in ilmenite separates and bulk samples from several lunar rocks with long but unknown irradiation histories were compared with predicted rates and ratios. The agreements were generally quite good. Erosion of rock surfaces affected rates or ratios for only near-surface samples, where solar-proton production is important. There were considerable spreads in predicted-to-observed production rates of 83 Kr, due at least in part to uncertainties in chemical abundances. The 78 Kr/ 83 Kr ratios were predicted quite well for samples with a wide range of Zr/Sr abundance ratios. The calculated 80 Kr/ 83 Kr ratios were greater than the observed ratios when production by the 79 Br(n,γ) reaction was included, but were slightly undercalculated if the Br reaction was omitted; these results suggest that Br(n,γ)-produced Kr is not retained well by lunar rocks. The productions of 81 Kr and 82 Kr were overcalculated by approximately 10% relative to 83 Kr. Predicted-to-observed 84 Kr/ 83 ratios scattered considerably, possibly because of uncertainties in corrections for trapped and fission components and in cross sections for 84 Kr production. Most predicted 84 Kr and 86 Kr production rates were lower than observed. Shielding depths of several Apollo 11 rocks were determined from the measured 78 Kr/ 83 Kr ratios of ilmenite separates. 4 figures, 5 tables

  18. Mixotrophic cultivation of microalgae using industrial flue gases for biodiesel production.

    Science.gov (United States)

    Kandimalla, Pooja; Desi, Sreekanth; Vurimindi, Himabindu

    2016-05-01

    In the present study, an attempt has been made to grow microalgae Scenedesmus quadricauda, Chlorella vulgaris and Botryococcus braunii in mixotropic cultivation mode using two different substrates, i.e. sewage and glucose as organic carbon sources along with flue gas inputs as inorganic carbon source. The experiments were carried out in 500 ml flasks with sewage and glucose-enriched media along with flue gas inputs. The composition of the flue gas was 7 % CO2, 210 ppm of NO x and 120 ppm of SO x . The results showed that S. quadricauda grown in glucose-enriched medium yielded higher biomass, lipid and fatty acid methyl esters (FAME) (biodiesel) yields of 2.6, 0.63 and 0.3 g/L, respectively. Whereas with sewage, the biomass, lipid and FAME yields of S. quadricauda were 1.9, 0.46, and 0.21 g/L, respectively. The other two species showed closer results as well. The glucose utilization was measured in terms of Chemical Oxygen Demand (COD) reduction, which was up to 93.75 % by S. quadricauda in the glucose-flue gas medium. In the sewage-flue gas medium, the COD removal was achieved up to 92 % by S. quadricauda. The other nutrients and pollutants from the sewage were removed up to 75 % on an average by the same. Concerning the flue gas treatment studies, S. quadricauda could remove CO2 up to 85 % from the flue gas when grown in glucose medium and 81 % when grown in sewage. The SO x and NO x concentrations were reduced up to 50 and 62 %, respectively, by S. quadricauda in glucose-flue gas medium. Whereas, in the sewage-flue gas medium, the SO x and NO x concentrations were reduced up to 45 and 50 %, respectively, by the same. The other two species were equally efficient however with little less significant yields and removal percentages. This study laid emphasis on comparing the feasibility in utilization of readily available carbon sources like glucose and inexpensive leftover carbon sources like sewage by microalgae to generate energy coupled with economical

  19. Diffusion of disintegration products of radioactive gases in circular and flat channels

    International Nuclear Information System (INIS)

    Ingham, D.B.

    1975-01-01

    The problem of steady state diffusion of the decaying products resulting from the disintegration of a radioactive gas flowing through circular and flat channels is presented. Axial diffusion is neglected and a small diffusion parameter is assumed. Results are obtained for the axial displacement and density distribution of atoms deposited on the walls when the laminar flow is Poiseuille and plug. These results can be used to determine diffusion coefficients of disintegration products. (author)

  20. Solar UV Irradiation-Induced Production of Greenhouse Gases from Plant Surfaces: From Leaf to Earth

    DEFF Research Database (Denmark)

    Mikkelsen, Teis Nørgaard; Bruhn, Dan; Ambus, Per

    2016-01-01

    -methane volatile organic compounds (NMVOC), NOx and N2O. This gas production, near or at the plant surface, is a new discovery and is normally not included in emission budgets (e.g. by the Intergovernmental Panel on Climate Change, IPCC) due to a lack of information with respect to validation and upscaling. For CH...

  1. Separation of the fission product noble gases krypton and xenon from dissolver off-gas in reprocessing HTGR-fuel

    Energy Technology Data Exchange (ETDEWEB)

    Bohnenstingl, J.; Djoa, S. H.; Laser, M.; Mastera, S.; Merz, E.; Morschl, P.

    1976-04-15

    This paper describes a process developed for the retainment and separation of volatile (3H, 129 +131I) and gaseous (85Kr, Xe) fission products from the off-gas produced during dissolution of HTGR-fuel. To prevent unnecessary dilution of liberated noble gases by surrounding atmosphere, a helium purge-gas cycle is applied to enable a coarse fractionating of krypton and xenon by cold-trapping at about 80 deg K after precleaning the gas stream. The process consists of the following steps: deposition of droplets and solid aerosols; chemisorption of iodine on silver impregnated silica gel; catalytic removal of nitrogen oxides and oxygen; drying of the process gas stream; final filtering of abraded solids; deposition of xenon in solid form at 80 deg K and low subpressure; deposition of krypton in solid form at 80 deg K after compression to about 6 bar; decontamination of 85krypton-containing xenon by batch distillation for eventual industrial utilization; and removal of nitrogen and argon enrichment during continuous operation in the purge-gas stream by inleaking air with charcoal. A continuously operating dissolver vessel, closed to the surrounding atmosphere, yields a very high content of noble gases, e.g., 0.35 vol % krypton and 2.0 vol % xenon. The presented off-gas treatment unit is operated in cold runs with 1/3 of the full capacity and can treat about 1 m3 STP/h helium, corresponding to a quantity of about 10,000 MW(e) HTGR-fuel reprocessing plant.

  2. Separation of the fission product noble gases krypton and xenon from dissolver off-gas in reprocessing HTGR-fuel

    International Nuclear Information System (INIS)

    Bohnenstingl, J.; Djoa, S.H.; Laser, M.; Mastera, S.; Merz, E.; Morschl, P.

    1976-01-01

    This paper describes a process developed for the retainment and separation of volatile ( 3 H, 129+131 I) and gaseous ( 85 Kr, Xe) fission products from the off-gas produced during dissolution of HTGR-fuel. To prevent unnecessary dilution of liberated noble gases by surrounding atmosphere, a helium purge-gas cycle is applied to enable a coarse fractionating of krypton and xenon by cold-trapping at about 80 0 K after precleaning the gas stream. The process consists of the following steps: deposition of droplets and solid aerosols; chemisorption of iodine on silver impregnated silica gel; catalytic removal of nitrogen oxides and oxygen; drying of the process gas stream; final filtering of abraded solids; deposition of xenon in solid form at 80 0 K and low subpressure; deposition of krypton in solid form at 80 0 K after compression to about 6 bar; decontamination of 85 Kr-containing xenon by batch distillation for eventual industrial utilization; and removal of nitrogen and argon enrichment during continuous operation in the purge-gas stream by inleaking air with charcoal. A continuously operating dissolver vessel, closed to the surrounding atmosphere, yields a very high content of noble gases, i.e., 0.35 vol % krypton and 2.0 vol % xenon. The presented off-gas treatment unit is operated in cold runs with 1 / 3 of the full capacity and can treat about 1 m 3 STP/h helium, corresponding to a quantity of about 10,000 MW/sub e/ HTGR-fuel reprocessing plant

  3. Method for the gasification of carbonaceous fuels for the production of reduction gases

    Energy Technology Data Exchange (ETDEWEB)

    Paschen, P; Pfeiffer, R; Rao, C

    1977-11-24

    For the gasification of solid, liquid or gaseous fuels to produce reduction gas, the fuel is led beneath the surface of a metallic melting bath together with an oxidating gasification agent. A sulfur-adsorbing slag should be maintained on the melting bath surface, so a desulfurated reduction gas is produced containing mainly CO and H/sub 2/ as used for metallurgical processes (i.e., direct reduction for the production of sponge iron).

  4. Development of a process for efficient use of CO2 from flue gases in the production of photosynthetic microorganisms.

    Science.gov (United States)

    González-López, C V; Acién Fernández, F G; Fernández-Sevilla, J M; Sánchez Fernández, J F; Molina Grima, E

    2012-07-01

    A new methodology to use efficiently flue gases as CO(2) source in the production of photosynthetic microorganisms is proposed. The CO(2) is absorbed in an aqueous phase that is then regenerated by microalgae. Carbonated solutions could absorb up to 80% of the CO(2) from diluted gas reaching total inorganic carbon (TIC) concentrations up to 2.0 g/L. The pH of the solution was maintained at 8.0-10.0 by the bicarbonate/carbonate buffer, so it is compatible with biological regeneration. The absorption process was modeled and the kinetic parameters were determined. Anabaena sp. demonstrated to tolerate pH (8.0-10.0) and TIC (up to 2.0 g/L) conditions imposed by the absorption step. Experiments of regeneration of the liquid phase demonstrated the feasibility of the overall process, converting CO(2) into organic matter. The developed process avoids heating to regenerate the liquid whereas maximizing the efficiency of CO(2) use, which is relevant to achieve the commercial production of biofuels from microalgae. Copyright © 2012 Wiley Periodicals, Inc.

  5. Evaluation of fission-product gases in program GAPCON series and FREG-3 to estimate the gap heat transfer coefficient

    International Nuclear Information System (INIS)

    Ohki, Naohisa; Harayama, Yasuo; Takeda, Tsuneo; Izumi, Fumio.

    1977-12-01

    In safety evaluation of a fuel rod, estimation of the stored energy in the fuel rod is indispensable. For this estimation, the temperature distribution in the fuel rod is calculated. Most important in determination of the temperature distribution is the gap heat transfer coefficient (gap conductance) between pellet surface and cladding inner surface. Under fuel rod operating condition, the mixed gas in the gap is composed of He, Xe and Kr. He is initial seald gas. Xe and Kr are fission-product gases, of which the quantities depend on the fuel burn-up. In program GAPCON series (GAPCON and GAPCON-THERMAL-1 and -2) and FREG-3, these quantities are given as a function of the irradiation time, power rating and neutron flux in estimation of the thermal conductivity of the mixed gas. The methods of calculating the quantities of Xe and Kr in the programs have been examined. Input of the neutron flux which influences F.P. gas production rates is better than the determination from the fuel-rod power rating. (auth.)

  6. Greenhouse gases reduction potential through consumer’s behavioral changes in terms of food-related product selection

    International Nuclear Information System (INIS)

    Yoshikawa, Naoki; Fujiwara, Natsumi; Nagata, Junko; Amano, Koji

    2016-01-01

    Highlights: • Greenhouse gases (GHG) reduction potential by shopping behavior change is analyzed. • Four scenarios related to food consumption is evaluated using life cycle assessment. • Total GHG reduction potential by four scenarios in Japan is 1367 kt-CO_2/year. • Potential reduces to 45% when considering feasible ratio of taking behavior change. • Contribution of seasonal production/consumption scenario is highest among scenarios. - Abstract: Sustainable consumption plays an important role in the mitigation of global warming and the conservation of energy. Promoting more environmentally responsible consumer behavior, especially through open communication between stakeholders, is one way to achieve low-carbon consumption. This study evaluates the potential for reducing greenhouse gas (GHG) emissions through behavioral transformation of consumers in terms of their daily shopping habits. In this context, the behavioral transformative actions pertain to certain foods and daily necessities, and are analyzed from a life cycle assessment perspective. We developed multiple product-selection scenarios to evaluate GHG emissions related to the daily purchase of commodities. Based on the life cycle assessment, we estimated the GHG emissions that result from the production and distribution of these commodities, pertaining to both the current product selection and to a possibly improved selection. The results of our study show that because of seasonal consumption patterns and energy conversion, there is a substantial potential to reduce GHG emissions resulting from out-of-season produce cultivation. The GHG reduction potential is not high for each individual commodity because diverse commodities are needed on a daily basis. However, various actions in combination could have substantial potential for reducing emissions.

  7. Anticipated changes in the emissions of green-house gases and ammonia from pork production due to shifts from fattening of barrows towards fattening of boars

    DEFF Research Database (Denmark)

    Dämmgen, Ulrich; Berk, Andreas; Otten, Caroline

    2013-01-01

    Greenhouse gases and of ammonia emissions from pork production will change when fattening of barrows switches towards to fattening of (intact) boars. The results of an accurate feeding experiment allow for the differentiation of the effects on emissions of gender (differentiating in boars, barrow...

  8. AIR POLLUTION FROM ANIMAL AND MUNICIPAL WASTEWATER: ASSESSMENT OF PRODUCTION AND RELEASE OF NOXIOUS GASES

    DEFF Research Database (Denmark)

    Dai, Xiaorong

    from animal manure (mixture of urine and feces) by hydrolysis of urinary urea catalyzed by microbial urease present in feces. To better understand the enzymatic process of ammonia formation in manure, experiments based on Michaelis-Menten kinetics were conducted to obtain accurate estimates...... of the kinetic parameters of urease activity of feces and manure from pig and cattle, and to investigate the effects of pH on animal fecal urease by individual ammonium generation rate determination at five pH levels. Investigating the gas production and release mechanisms is important not only for estimating...... characteristics of different types of wastes (e.g., the total nitrogen, total ammoniacal nitrogen, dry matter, and pH) had great influence on the releases of NH3, CO2, H2S, and SO2. The investigation of kinetic parameter showed that the maximum urease activity for pig feces is at around pH 7, while...

  9. Equality of e+e- production amplitudes for scalar-vector and pseudoscalar-axial heavy meson-antimeson pairs

    Science.gov (United States)

    Voloshin, M. B.

    2018-02-01

    The production of heavy meson-antimeson pairs of the type S V and P A in e+e- annihilation is considered, with P and V being the ground-state JP=0- and JP=1- (anti)mesons from the (1 /2 )-doublet and S and A standing for the excited JP=0+ and JP=1+ (anti)mesons from the (1 /2 )+doublet. It is argued that the production amplitudes in these two channels should be equal up to a higher (than one) order in the heavy quark mass (ΛQCD/MQ ) expansion, A (e +e-→S V ¯ )=A (e+e-→A P ¯ ) , including both the S -wave and the D -wave amplitudes. Given that the S V and P A thresholds are extremely close, the production cross section in both channels should be the same to a high degree of accuracy. In practice, this behavior can be studied for the processes e+e-→Ds 0(2317 )D¯s *+c .c . and e+e-→Ds 1(2460 )D¯ s+c .c . in the charm sector and e+e-→Bs 0B¯s *+c .c . and e+e-→Bs 1B¯ s+c .c . in the B sector.

  10. Properties of quantum self-gravitating gases

    International Nuclear Information System (INIS)

    Rumyantseva, E.N.

    1981-01-01

    Ways of development of the quantum field theory in the general relativity theory are under consideration. A direction, where consideration of quantum fields in strong nonstatic gravitational fields leads to such effects as particle production, is found out. Authors managed to explain properties of quantum self-gravitating gases on the base of an expansion the fugacity in power series for bose- and fermi gases. Expressions for fluctuations in statistical models of the Fridmann universe are presented. The spectrum density of relict neutrinos in Fridmann models is calculated. A characteristic low boundary of the neutrino energy spectrum constitutes 1 MeV. A number of neutrinos with such energies practically is equal to zero. A great number of neutrinos has energies 0 . It is precisely these neurinos, which are responsible for the closed state of the universe according to the built up model

  11. Increased spring flooding of agricultural fields will exhibit altered production of greenhouse gases

    Science.gov (United States)

    Paul, R. F.; Smith, C. M.; Smyth, E. M.; Kantola, I. B.; DeLucia, E. H.

    2013-12-01

    The U.S. Corn Belt currently is a net source of carbon dioxide and nitrous oxide to the atmosphere, but is also a sink of methane. Among the proposed effects of climate change in the North American Midwest region is an increase in the frequency and duration of spring flooding events. This would cause ponding in fields which may change the greenhouse gas balance of the region, especially by providing a suitable anoxic environment for the proliferation of methanogens, increasing methane emissions. To determine whether methanogenesis occurs in flooded agricultural soils of the Midwest and how other gas fluxes are affected, we installed collars into the ground of a research field located in central Illinois. The control group was maintained at the same conditions as the surrounding field. Two groups of collars were sustained with water flooding the headspaces via a drip irrigation system; one treatment was analyzed for gas fluxes of CH4, N2O, and CO2 evolving from the collars, and a separate treatment of flooded collars was used for soil sampling. Comparing flooded soils versus control we measured reduced N2O fluxes (-3.12 x 10-6 × 6.8 x 10-7 g N m-2 min-1), reduced CO2 fluxes (-6.13 x 10-3 × 9.3 x 10-4 g CO2 m-2 min-1), and increased methane fluxes (+2.72 x 10-6 × 5.8 x 10-7 g CH4 m-2 min-1). After only one week of treatment the flooded soils switched from being sinks to sources of methane, which continued across the duration of the experiment. These preliminary results indicate that methanogenesis occurs in flooded agricultural fields, and suggest including regional modeling into further study. Although the global warming potential of methane is 25 times greater than CO2, our measured rates of methane production were compensated by reductions in nitrous oxide and CO2 fluxes, reducing the total 100-year horizon global warming potential of the flooded soils we studied by 64.8%. This indicates that accounting for more frequent seasonal ponding would significantly

  12. Irritant gases

    NARCIS (Netherlands)

    Meulenbelt, J

    Acute inhalation injury can result from the use of household cleaning agents (e.g. chlorine, ammonia), industrial or combustion gases (e.g. sulfur dioxide, nitrogen oxides) or bioterrorism. The severity of the injury is to a great extent determined by the circumstances of exposure. If exposure was

  13. Desulphurization of exhaust gases in chemical processes

    Energy Technology Data Exchange (ETDEWEB)

    Asperger, K.; Wischnewski, W.

    1981-01-01

    The sulfur content of exhaust gases can be reduced by: desulphurization of fuels; modification of processes; or treatment of resultant gases. In this paper a few selected examples from the chemical industry in the German Democratic Republic are presented. Using modified processes and treating the resultant gases, the sulphuric content of exhaust gases is effectively reduced. Methods to reduce the sulfur content of exhaust gases are described in the field of production of: sulphuric acid; viscose; fertilizers; and paraffin.

  14. Incomplete equalization

    DEFF Research Database (Denmark)

    Holm, Anders; Jæger, Mads Meier; Karlson, Kristian Bernt

    2013-01-01

    improve access to lower-tier higher education for low-SES students. These findings point to an interesting paradox in that tracking has adverse effects at the micro-level but equalizes educational opportunities at the macro-level. We also discuss whether similar mechanisms might exist in other educational...

  15. Production of sulfur gases and carbon dioxide by synthetic weathering of crushed drill cores from the Santa Cruz porphyry copper deposit near Casa Grande, Pinal County, Arizona

    Science.gov (United States)

    Hinkle, M.E.; Ryder, J.L.; Sutley, S.J.; Botinelly, T.

    1990-01-01

    Samples of ground drill cores from the southern part of the Santa Cruz porphyry copper deposit, Casa Grande, Arizona, were oxidized in simulated weathering experiments. The samples were also separated into various mineral fractions and analyzed for contents of metals and sulfide minerals. The principal sulfide mineral present was pyrite. Gases produced in the weathering experiments were measured by gas chromatography. Carbon dioxide, oxygen, carbonyl sulfide, sulfur dioxide and carbon disulfide were found in the gases; no hydrogen sulfide, organic sulfides, or mercaptans were detected. Oxygen concentration was very important for production of the volatiles measured; in general, oxygen concentration was more important to gas production than were metallic element content, sulfide mineral content, or mineral fraction (oxide or sulfide) of the sample. The various volatile species also appeared to be interactive; some of the volatiles measured may have been formed through gas reactions. ?? 1990.

  16. Unjust Equalities

    DEFF Research Database (Denmark)

    Albertsen, Andreas; Midtgaard, Søren Flinch

    2014-01-01

    In the luck egalitarian literature, one influential formulation of luck egalitarianism does not specify whether equalities that do not reflect people’s equivalent exercises of responsibility are bad with regard to inequality. This equivocation gives rise to two competing versions of luck egalitar......In the luck egalitarian literature, one influential formulation of luck egalitarianism does not specify whether equalities that do not reflect people’s equivalent exercises of responsibility are bad with regard to inequality. This equivocation gives rise to two competing versions of luck....... The symmetrical view, we argue, is by far the more compelling, both by internal luck egalitarian standards and in light of the external rightist emphasis on choice and responsibility to which luck egalitarianism may partly be seen as a response. Our main case for the symmetrical view is that when some people...

  17. Equal Opportunities Questionnaire

    CERN Multimedia

    2007-01-01

    The initiative to promote Equal Opportunities at CERN started in 1993. The first Equal Opportunities Officer was appointed in 1996 followed by the creation of the Equal Opportunities Advisory Panel in 1998. Initially the concern was mainly the fair treatment of women in the work-place. Today the emphasis has evolved to ensuring that diversity is used to increase creativity and productivity in the work-place. In order to ensure that all aspects of Equal Opportunities and Diversity are covered, CERN’s Equal Opportunities team has prepared a survey to obtain your input. Your answers are confidential and will only be used for generating statistics. The questionnaire is on-line and can be accessed via: https://espace.cern.ch/EOQ. We hope that you will take a few minutes of your time to give your input and would be grateful if you could reply before 15/10/07. For further information about Equal Opportunities at CERN see: http://cern.ch/equal-opportunities The Equal Opportuni...

  18. Treatment and separation of radioactive fission products tritium, rare gases and iodine in nuclear fuel reprocessing plants

    Energy Technology Data Exchange (ETDEWEB)

    Schnez, H.

    1975-07-15

    Rare gases must be separated from the process off-gases of the head-end of the Purex and Thorex processes. To achieve high decontamination factors, the quantity of off-gas should be kept as low as possible. For rare gas separation, there are two possible methods of routing the off-gas: (a) the open flushing gas circuit, in which the purified off-gas (generally air) is passed off via the stack and (b) the closed circuit in which the off-gas (nitrogen or rare gases) is recycled to the dissolver after purification. Tritium must not be entrained into the second extraction cycle or be emitted with off-gases in the form of water vapor (HTO) or HT, but must remain completely in the aqueous phase. Most of the process water is recycled, as a result of which the tritium becomes concentrated in it. This tritiated water is then subjected to tritium rectification at a suitable point in the process. Iodine is very difficult to isolate to a small number of process stages. Present aim is to release the iodine in the dissolver stage into the off-gas, so as to prevent it being entrained into the extraction part. By the injection of hot nitrogen or water vapor into the dissolver or into iodine-containing condensates, all of the iodine is passed into the gaseous phase. Scrubbers can also be used together with iodine-containing condensates to adjust the scrubbing solution. Capital cost of separation plants account for 1 to 10 percent of the total cost of the reprocessing installation, and even more if a sophisticated tritium separation system is required. (DLC)

  19. Landfill gases and some effects on vegetation

    Science.gov (United States)

    Franklin B. Flower; Ida A. Leone; Edward F. Gilman; John J. Arthur

    1977-01-01

    Gases moving from refuse landfills through soil were studied in New Jersey. The gases, products of anaerobic decomposition of organic matter in the refuse, caused injury and death of peach trees, ornamentals, and commercial farm crops, and create possible hazards to life and property because of the entrance of combustible gases into residences. Remedial measures are...

  20. Equal Opportunities Questionnaire

    CERN Multimedia

    2007-01-01

    The initiative to promote Equal Opportunities at CERN started in 1993. The first Equal Opportunities Officer was appointed in 1996, which was followed by the creation of the Equal Opportunities Advisory Panel in 1998. Initially the concern was mainly the fair treatment of women in the work-place. Today the emphasis has evolved to ensuring that diversity is used to increase creativity and productivity in the work-place. In order to ensure that all aspects of Equal Opportunities and Diversity are covered, CERN’s Equal Opportunities team has prepared a survey to obtain your input. Your answers are confidential and will only be used for generating statistics. The questionnaire is on-line and can be accessed via: https://espace.cern.ch/EOQ. We hope that you will take a few minutes of your time to give your input and would be grateful if you could reply before 15/10/07. For further information about Equal Opportunities at CERN see: http://cern.ch/equal-opportunities The Equa...

  1. Diffusion coefficients gases, dissolved in fluid of NPPs circulation contours

    International Nuclear Information System (INIS)

    Piontkovskij, A.I.

    2000-01-01

    In article is brought analysis of diverse gases diffusion coefficients computation methods, dissolved in liquid. On the basis of this analysis and treatment of being equalizations for concrete gases and certain parameters offers universal diffusion coefficients determination dependence for diverse gases in wide range of parameters, circulation contours typical for work NPP

  2. Production, administration and disposal of cyclotron produced shortlived radioactive gases for positron emission tomography studies at the Austin Repatriation Medical Centre, Melbourne

    Energy Technology Data Exchange (ETDEWEB)

    Egan, G.F.; O`Keefe, G. [Austin Hospital, Heidelberg, VIC (Australia); Tochon-Danguy, H.J.; Midgley, S.; Phana, K.S.; Sachinidis, J.; Chan, J.G. [Melbourne Univ., Parkville, VIC (Australia). School of Physics

    1995-01-01

    Positron Emission Tomography (PET) Centre is operational at the Austin Repatriation Medical Centre, Melbourne. The major equipment consists of a 10 MeV cyclotron and a whole body PET scanner. Radioactive gases produced and used directly in clinical studies include [{sup 15}O]O{sub 2}, [{sup 15}O]CO, and [{sup 15}O]CO{sub 2}, whilst [{sup 11}C]CO{sub 2} is also produced for use in radiochemistry syntheses. Radioactivity delivery rates of 3.7, 3.3, and 1.6 GBq/min to the scanner suite have been achieved for [{sup 15}O]O{sub 2}, [{sup 15}O]CO{sub 2}, and [{sup 15}O]CO respectively, and batch productions of 36.3 GBq of [{sup 11}C]CO{sub 2} have been produced. The production. patient administration and disposal of the short-lived radioactive gases has been achieved in compliance with radiation protection principles. Radioactive gas doses of 1.7 GBq are administered to patients with less than 0.02 MBq/m{sup 3} leakage into the scanner suite. Less than 13 MBq of [ {sup 15}O]-labelled gases are released into the environment per patient study at a concentration of 0.018 MBq/m{sup 3}. Annually less than 2 GBq is expected to be released into the environment. The centre design and first four months` experience of radioactive gas production, administration and disposal is presented. 5 refs., 4 tab., 1 fig.

  3. Fuel gases in Algeria

    International Nuclear Information System (INIS)

    Arachiche, B.; Elandaloussi, H.

    1996-01-01

    For a country like Algeria, fuel gases represent an important economical challenge. To answer the increasing energy demand in the transportation sector, the use of fuel gases allows to preserve the petroleum reserves and to create specific industrial structures devoted to LPG-f (liquefied petroleum gas-fuel) and NGV (natural gas for vehicles). This paper presents the energy policy of Algeria, its reserves, production, and exportations of hydrocarbons and the internal rational use of energy sources according to its economic and environmental policy and to its internal needs. The energy consumption of Algeria in the transportation sector represents 2/3 of the petroleum products consumed in the internal market and follows a rapid increase necessary to the socio-economic development of the country. The Algerian experience in fuel gases is analysed according to the results of two successive experimentation periods for the development of NGV before and after 1994, and the resulting transportation and distribution network is described. The development of LPG-f has followed also an experimental phase for the preparation of regulation texts and a first statement of the vehicles conversion to LPG-f is drawn with its perspectives of development according to future market and prices evolutions. (J.S.)

  4. Magnetic transport apparatus for the production of ultracold atomic gases in the vicinity of a dielectric surface

    International Nuclear Information System (INIS)

    Haendel, S.; Marchant, A. L.; Wiles, T. P.; Hopkins, S. A.; Cornish, S. L.

    2012-01-01

    We present an apparatus designed for studies of atom-surface interactions using quantum degenerate gases of 85 Rb and 87 Rb in the vicinity of a room temperature dielectric surface. The surface to be investigated is a super-polished face of a glass Dove prism mounted in a glass cell under ultra-high vacuum. To maintain excellent optical access to the region surrounding the surface, magnetic transport is used to deliver ultracold atoms from a separate vacuum chamber housing the magneto-optical trap (MOT). We present a detailed description of the vacuum apparatus highlighting the novel design features; a low profile MOT chamber and the inclusion of an obstacle in the transport path. We report the characterization and optimization of the magnetic transport around the obstacle, achieving transport efficiencies of 70% with negligible heating. Finally, we demonstrate the loading of a hybrid optical-magnetic trap with 87 Rb and the creation of Bose-Einstein condensates via forced evaporative cooling close to the dielectric surface.

  5. Method of contacting solids and gases

    Energy Technology Data Exchange (ETDEWEB)

    1942-08-06

    A continuous method is described for contacting solids and gases. The process involves passing a confined stream of gases through an extended path including a treating zone and imposing a pressure on the stream of gases at least sufficient to overcome the resistence of said path to the flow of said gases. A solid in finely divided form is then introduced into said stream of gases, maintaining a vertical column of finely divided solid in fluidized state of a height which will produce a pressure at the column bottom at least equal to the gas pressure at the point of entry of the solids into the stream. The solids then pass from the bottom of the column into the stream.

  6. Quantum gases of Chromium: thermodynamics and magnetic properties of a Bose-Einstein condensate and production of a Fermi sea

    International Nuclear Information System (INIS)

    Naylor, B.

    2016-01-01

    This thesis presents experimental results performed with quantum gases of Chromium atoms. The specificity of Chromium resides in its large electronic spin s=3 and non negligible dipole-dipole interaction between atoms. We produced a new quantum gas, a Fermi sea of the "5"3Cr isotope. Optimization of the co-evaporation with the "5"2Cr bosonic isotope leads to 10"3 atoms at T/T_F = 0.66 ± 0.08. We obtained new results on thermodynamics of a spinor Bose gas. By 'shock cooling' a thermal multi-spin component gas, we find that the condensation dynamics is affected by spin changing collisions. We also demonstrate a new cooling mechanism based on the spin degrees of freedom when the Bose Einstein condensate (BEC) is in the lowest energy spin state. Dipolar interactions thermally populate spin excited states at low magnetic eld. The purification of the BEC is obtained by selectively removing these thermal atoms. Finally, we present spin dynamics experiments. In the first experiment, spin dynamics following the preparation of atoms in a double well trap in opposite stretch spin states allows the measurement of the last unknown scattering length of "5"2Cr: a_0 = (13.5+15-10) a_B (with a_B being the Bohr radius). We then present preliminary results performed in a 3D lattice and in the bulk, where spin excitation is performed by a spin rotation. We investigate for different experimental configurations which theory with or without quantum correlations fits best our data. (author)

  7. Use of Hesperaloe funifera for the production of paper and extraction of lignin for synthesis and fuel gases

    International Nuclear Information System (INIS)

    Sanchez, R.; Rodriguez, A.; Navarro, E.; Conesa, J.A.; Jimenez, L.

    2010-01-01

    In this work, we characterized Hesperaloe funifera; pulp and paper obtained by subjecting the plant raw material to soda, soda-anthraquinone, ethanolamine, ethyleneglycol and diethyleneglycol cooking. In addition, the solid fractions extracted by acidifying the cooking liquors, rich in lignin, were used to obtain synthesis and fuel gases. The contents in lignin, α-cellulose, holocellulose, hemicellulose, ethanol-benzene extractives, hot water solubles, 1% NaOH solubles and ash of H. funifera were found to be 7.3%, 40.9%, 76.5%, 35.6%, 4.0%, 13.5%, 29.5% and 5.9%, respectively. The mean fibre length, 4.19 mm, exceeds those for some non-wood materials. Hesperaloe pulp obtained by cooking with 10% NaOH and 1% anthraquinone at 155 o C for 30 min exhibited good values of yield (48.3%), viscosity (737 mL g -1 ), Kappa number (15.2), tensile index (83.6 Nm g -1 ), stretch (3.8%), burst index (7.34 kN g -1 ) and tear index (3.20 mNm 2 g -1 ). Acidification to pH 6 of the liquor resulting from the soda pulping of 500 g of plant raw material provided an amount of 13.90 g of lignin-rich solids pyrolysis of which gave a gas mixture containing 1.13% H 2 , 31.79% CO and 1.86% CH 4 by weight. Gasification of the same sample provided a mixture containing 0.18% H 2 , 24.50% CO and 17.75% CH 4 , also by weight.

  8. Production of ultrafine particles of high-temperature tetragonal WO3 by dc arc discharge in Ar-O2 gases

    International Nuclear Information System (INIS)

    Guo Yumei; Murata, Norihiko; Ono, Kazuya; Okazaki, Tsugio

    2005-01-01

    Ultrafine particles of WO 3 are successfully produced by dc arc discharge in Ar-O 2 gases. Particle sizes are distributed from 10 nm to 1 μm depending on production conditions: gas pressure, collection position and discharge current. Observations of the cooled particles by electron microscopy indicate that the WO 3 particles are tetragonal, a phase that is usually only stable above 725 deg. C. The octahedral crystals are bounded by eight {1 0 1} faces and occasionally truncated by {1 0 0} and/or {0 0 1} faces. This method of producing WO 3 by dc arc discharge therefore affords a high-temperature phase that is preserved upon cooling to room temperature

  9. Is all co-production created equal? Understanding drivers and outcomes across different users and forms of engagement

    Science.gov (United States)

    Browne, K.; Lemos, M. C.

    2017-12-01

    Despite a growing recognition of the importance of coproduced information in networks of decision-makers facing climate change, relatively little attention has been paid to how different types of users and forms of engagement (e.g. brokering and bridging of climate information) may yield different coproduction outcomes. In this study, we compare drivers and outcomes of co-production of a large network (twenty-five cases) of users within the scope of the Great Lakes Integrated Sciences and Assessments (GLISA), a boundary organization whose mission is to disseminate climate information in the Great Lakes Region. We focus especially on drivers of co-production within boundary organizations (e.g. embeddness, complementarity, financial and human resources and trust building and legitimacy) to explore different forms of engagement and models of brokering and bridging information. Our case studies span a wide range of users, including cities, businesses, academic and professional organizations and governmental agencies. We find that different kinds of resources and engagement matter in terms of desirable outcomes. In addition, while the supply of resources by boundary organizations is necessary to foster co-production, effective use and stable networks are often not achieved in the absence of sustained engagement and support.

  10. Throat gases against the CO2

    International Nuclear Information System (INIS)

    Michaut, C.

    2006-01-01

    The steel production needs carbon consumption and generates carbon dioxide, the main greenhouse gases. It represents about 6 % of the greenhouse gases emissions in the world. That is why the steel industry began last year a research program, Ideogaz, to reduce its CO 2 releases. The first results on the throat gases recovery seems very promising: it uses 25 % less of carbon. The author presents the program and the main technical aspects of the method. (A.L.B.)

  11. A Tale of Two Gases: Isotope Effects Associated with the Enzymatic Production of H2 and N2O

    Science.gov (United States)

    Yang, H.; Gandhi, H.; Kreuzer, H. W.; Moran, J.; Hill, E. A.; McQuarters, A.; Lehnert, N.; Ostrom, N. E.; Hegg, E. L.

    2014-12-01

    Stable isotopes can provide considerable insight into enzymatic mechanisms and fluxes in various biological processes. In our studies, we used stable isotopes to characterize both enzyme-catalyzed H2 and N2O production. H2 is a potential alternative clean energy source and also a key metabolite in many microbial communities. Biological H2 production is generally catalyzed by hydrogenases, enzymes that combine protons and electrons to produce H2 under anaerobic conditions. In our study, H isotopes and fractionation factors (α) were used to characterize two types of hydrogenases: [FeFe]- and [NiFe]-hydrogenases. Due to differences in the active site, the α associated with H2 production for [FeFe]- and [NiFe]-hydrogenases separated into two distinct clusters (αFeFe > αNiFe). The calculated kinetic isotope effects indicate that hydrogenase-catalyzed H2 production has a preference for light isotopes, consistent with the relative bond strengths of O-H and H-H bonds. Interestingly, the isotope effects associated with H2 consumption and H2-H2O exchange reactions were also characterized, but in this case no specific difference was observed between the different enzymes. N2O is a potent greenhouse gas with a global warming potential 300 times that of CO2, and the concentration of N2O is currently increasing at a rate of ~0.25% per year. Thus far, bacterial and fungal denitrification processes have been identified as two of the major sources of biologically generated N2O. In this study, we measured the δ15N, δ18O, δ15Nα (central N atom in N2O), and δ15Nβ (terminal N atom in N2O) of N2O generated by purified fungal P450 nitric oxide reductase (P450nor) from Histoplasma capsulatum. We observed normal isotope effects for δ18O and δ15Nα, and inverse isotope effects for bulk δ15N (the average of Nα and Nβ) and δ15Nβ. The observed isotope effects have been used in conjunction with DFT calculations to provide important insight into the mechanism of P450nor. Similar

  12. Microalgal biomass and lipid production in mixed municipal, dairy, pulp and paper wastewater together with added flue gases.

    Science.gov (United States)

    Gentili, Francesco G

    2014-10-01

    The aim of the study was to grow microalgae on mixed municipal and industrial wastewater to simultaneously treat the wastewater and produce biomass and lipids. All algal strains grew in all wastewater mixtures; however, Selenastrum minutum had the highest biomass and lipids yields, up to 37% of the dry matter. Nitrogen and phosphorus removal were high and followed a similar trend in all three strains. Ammonium was reduced from 96% to 99%; this reduction was due to algal growth and not to stripping to the atmosphere, as confirmed by the amount of nitrogen in the dry algal biomass. Phosphate was reduced from 91% to 99%. In all strains used the lipid content was negatively correlated to the nitrogen concentration in the algal biomass. Mixtures of pulp and paper wastewater with municipal and dairy wastewater have great potential to grow algae for biomass and lipid production together with effective wastewater treatment. Copyright © 2014 Elsevier Ltd. All rights reserved.

  13. Relativistic quantum thermodynamics of ideal gases in two dimensions.

    Science.gov (United States)

    Blas, H; Pimentel, B M; Tomazelli, J L

    1999-11-01

    In this work we study the behavior of relativistic ideal Bose and Fermi gases in two space dimensions. Making use of polylogarithm functions we derive a closed and unified expression for their densities. It is shown that both type of gases are essentially inequivalent, and only in the non-relativistic limit the spinless and equal mass Bose and Fermi gases are equivalent as known in the literature.

  14. Relativistic Quantum Thermodynamics of Ideal Gases in 2 Dimensions

    OpenAIRE

    Blas, H.; Pimentel, B. M.; Tomazelli, J. L.

    1999-01-01

    In this work we study the behavior of relativistic ideal Bose and Fermi gases in two space dimensions. Making use of polylogarithm functions we derive a closed and unified expression for their densities. It is shown that both type of gases are essentially inequivalent, and only in the non-relativistic limit the spinless and equal mass Bose and Fermi gases are equivalent as known in the literature.

  15. 75 FR 74773 - Mandatory Reporting of Greenhouse Gases: Additional Sources of Fluorinated GHGs

    Science.gov (United States)

    2010-12-01

    ...-mechanical systems (MEMS) manufacturing facilities. Fluorinated Gas Production....... 325120 Industrial gases... of Industrial Greenhouse Gases. Electrical Equipment Use General Stationary Fuel Combustion. Imports and Exports of Fluorinated Suppliers of Industrial Greenhouse GHGs Inside Pre-charged Equipment Gases...

  16. Fuel saving, carbon dioxide emission avoidance, and syngas production by tri-reforming of flue gases from coal- and gas-fired power stations, and by the carbothermic reduction of iron oxide

    International Nuclear Information System (INIS)

    Halmann, M.; Steinfeld, A.

    2006-01-01

    Flue gases from coal, gas, or oil-fired power stations, as well as from several heavy industries, such as the production of iron, lime and cement, are major anthropogenic sources of global CO 2 emissions. The newly proposed process for syngas production based on the tri-reforming of such flue gases with natural gas could be an important route for CO 2 emission avoidance. In addition, by combining the carbothermic reduction of iron oxide with the partial oxidation of the carbon source, an overall thermoneutral process can be designed for the co-production of iron and syngas rich in CO. Water-gas shift (WGS) of CO to H 2 enables the production of useful syngas. The reaction process heat, or the conditions for thermoneutrality, are derived by thermochemical equilibrium calculations. The thermodynamic constraints are determined for the production of syngas suitable for methanol, hydrogen, or ammonia synthesis. The environmental and economic consequences are assessed for large-scale commercial production of these chemical commodities. Preliminary evaluations with natural gas, coke, or coal as carbon source indicate that such combined processes should be economically competitive, as well as promising significant fuel saving and CO 2 emission avoidance. The production of ammonia in the above processes seems particularly attractive, as it consumes the nitrogen in the flue gases

  17. [Gases in vitreoretinal surgery].

    Science.gov (United States)

    Janco, L; Vida, R; Bartos, M; Villémová, K; Izák, M

    2012-02-01

    To evaluate the importance and benefits of using gases in vitreoretinal surgery. The gases represent a wide group of substances used in eye surgery for more than 100 years. The role of intraocular gases in vitreoretinal surgery is irreplaceable. Their use is still considered to be the "gold standard". An important step in eye surgery was the introduction of expanding gases--sulfur hexafluoride and perfluorocarbons into routine clinical practice. The most common indications for the use of intraocular gases are: retinal detachment, idiopathic macular hole, complications of vitreoretinal surgery and others. The introduction of intraocular gases into routine clinical practice, along with other modern surgical techniques resulted in significant improvement of postoperative outcomes in a wide range of eye diseases. Understanding the principles of intraocular gases use brings the benefits to the patient and physician as well. Due to their physical and chemical properties they pose far the best and most appropriate variant of intraocular tamponade. Gases also bring some disadvantages, such as difficulties in detailed fundus examination, visual acuity testing, ultrasonographic examination, difficulties in application of intravitreal drugs or reduced possibility of retina laser treatment. The gases significantly change optical system properties of the eye. The use of gases in vitreoretinal surgery has significantly increased success rate of retinal detachment surgery, complicated posterior segment cases, trauma, surgery of the macula and other diseases.

  18. Fluidized bed pyrolysis of HDPE: A study of the influence of operating variables and the main fluid dynamic parameters on the composition and production of gases

    Energy Technology Data Exchange (ETDEWEB)

    Martinez, Lidia; Aguado, Alicia; Moral, Alberto [CARTOF Centro Tecnologico, Valladolid (Spain). Environmental Div.; Irusta, Ruben [CARTOF Centro Tecnologico, Valladolid (Spain). Environmental Div.; Valladolid Univ. (Spain). Dept. of Chemical Engineering and Environmental Technology

    2011-02-15

    In the present work, a preliminary study of the pyrolysis process of high density polyethylene (HDPE) in a fluidized bed is investigated in order to determine the influence between the fluid dynamic properties of the bed reactor and the amount and composition of the gases produced. As is known, fluidized bed technology is a very interesting option to apply in the pyrolysis field due to i) the lack of moving parts in the hot region that facilitates the maintenance of equipment, ii) the high surface area to volume ratio available in the bed, and iii) the high heat transfer coefficient reached which governs the reaction products. But, heat and mass transfer coefficients are strongly affected by the fluid dynamic properties of the bed. During the pyrolysis of HDPE, a fluid dynamic characterization of the bed particles that consist of char-coated sand of HDPE has been carried out. Parameters such as the minimum fluidizing velocity (u{sub mf}), terminal velocity (u{sub t}), bed height (h{sub f}), bed voidage ({epsilon}{sub f}), fraction of the bed occupied by bubbles ({delta}), bubble diameter (d{sub b}), bubble velocity (u{sub b}), the mass transfer coefficients between the bubble and the cloud (K{sub bc}) and between the cloud and the emulsion (K{sub ce}) were determined. Subsequently, the influence of major operating variables and the fluid dynamic parameters on the composition and the gas yield of the pyrolysis of HDPE were studied. (author)

  19. Handbook of purified gases

    CERN Document Server

    Schoen, Helmut

    2015-01-01

    Technical gases are used in almost every field of industry, science and medicine and also as a means of control by government authorities and institutions and are regarded as indispensable means of assistance. In this complete handbook of purified gases the physical foundations of purified gases and mixtures as well as their manufacturing, purification, analysis, storage, handling and transport are presented in a comprehensive way. This important reference work is accompanied with a large number of Data Sheets dedicated to the most important purified gases.  

  20. Gases in molten salts

    CERN Document Server

    Tomkins, RPT

    1991-01-01

    This volume contains tabulated collections and critical evaluations of original data for the solubility of gases in molten salts, gathered from chemical literature through to the end of 1989. Within the volume, material is arranged according to the individual gas. The gases include hydrogen halides, inert gases, oxygen, nitrogen, hydrogen, carbon dioxide, water vapor and halogens. The molten salts consist of single salts, binary mixtures and multicomponent systems. Included also, is a special section on the solubility of gases in molten silicate systems, focussing on slags and fluxes.

  1. Modelos para ajuste da produção de gases em silagens de girassol e milho Models for fit of gas production in sunflower and corn silages

    Directory of Open Access Journals (Sweden)

    Renius Mello

    2008-02-01

    Full Text Available O objetivo deste trabalho foi identificar entre os modelos Brody, Von Bertalanffy, Gompertz, France, Logístico, Logístico modificado e Logístico bicompartimental, aquele que apresenta maior qualidade de ajuste à curva de produção cumulativa de gases em silagens de girassol e milho. Os critérios adotados foram: coeficiente de determinação, quadrado médio do resíduo, análise gráfica das curvas observadas e estimadas, análise gráfica de dispersão dos resíduos estudentizados, erro percentual médio, eficiência relativa e número de iterações para atingir a convergência. Os modelos Brody, France e Logístico bicompartimental apresentaram os maiores valores de coeficiente de determinação em ambos os substratos, e a diferença entre eles pode ser considerada desprezível. Estes modelos apresentaram, também, os menores valores de quadrado médio do resíduo em silagens de girassol, e a diferença entre eles foi considerada desprezível. Os modelos Brody e France apresentaram menor quadrado médio do resíduo em silagens de milho. Todos os modelos apresentaram dispersão positiva dos resíduos em ambos os substratos após 144 horas de incubação. O modelo Brody apresentou menor erro percentual médio e número de iterações em ambos os substratos. Os modelos Logístico bicompartimental e France apresentaram maior eficiência relativa, respectivamente, em silagens de girassol e milho. Assim, o modelo Logístico bicompartimental apresenta maior qualidade de ajuste à curva de produção de gases em silagens de girassol e milho.The aim of this work was to identify among the Brody, Von Bertalanffy, Gompertz, France, Logistic, Modified logistic and Dual-pool logistic models, the one that presents the highest quality of fit for cumulative gas production curve in sunflower and corn silages. The quality of fit was evaluated by coefficient of determination, residual mean square, graphic analysis of the observed and estimated curves

  2. ECONOMIC EQUALITY OR JUSTICE

    Directory of Open Access Journals (Sweden)

    Ekrem Tufan

    2017-12-01

    Full Text Available From the beginning of economic life, equality has been a matter for human. Intrinsically human has two legs: Selfish and Groupish. Our selfish side does not care equality while Groupish side cares. What about the justice? Does human wants justice more than equalities in economic life? In this research, we have applied a questionnaire to find these two questions answer. As a result we can report that respondents prefer equality rather than justice in negative outcomes. On the other hand, they tend to prefer justice if there is possibility for positive outcomes. We cannot give evidence about gender, education and age differences effect on equality and justice preference.

  3. Equal opportunities in diversity

    CERN Multimedia

    Laëtitia Pedroso

    2010-01-01

    Promoting equal opportunities at CERN and advising the Director-General on all related matters is the task of the Equal Opportunities Officer, Doris Chromek-Burckhart, and Tim Smith, chair of the Equal Opportunities Advisory Panel. Changes are being introduced: in future, the focus of their work will be broadened to cover all aspects of diversity promotion.   The term "equal opportunities" has always been broader in scope than the equal treatment of men and women but this is what it has traditionally been confined to in practice. "We wanted to change how people see our mission", explains Doris Chromek-Burckhart. The word "diversity" has much wider connotations than "equal opportunities" and makes it clearer that we are also dealing with differences in nationality, religion, age, culture and physical ability”. Getting away from the old clichés is vital to ensuring equal treatment for everyone. The diversit...

  4. Equal treatment of shareholders

    Directory of Open Access Journals (Sweden)

    Arsić Zoran

    2014-01-01

    Full Text Available Equal treatment of shareholders is regulated in Art.269 of Company Act (2011 of Republic of Serbia. Equal treatment of shareholders means that all shareholders are to be treated equally under same circumstances. Obligation to treat all shareholders equally rests on all company bodies, predominantly general meeting. The standard whether an action violates the principle of equal treatment of all shareholders regarding the main rights of shareholders (such as voting right etc. is the nominal value of shares, or the equal treatment per person regarding ancillary rights (such as right to speak in shareholders' meeting etc.. Any action deviating from this standard is unlawful if the unequal treatment is not justified on the facts. If the principle of equal treatment is violated by general meeting resolution, such resolution may be annulled by the court.

  5. Some Equalities Are More Equal Than Others: Quality Equality Emerges Later Than Numerical Equality.

    Science.gov (United States)

    Sheskin, Mark; Nadal, Amber; Croom, Adam; Mayer, Tanya; Nissel, Jenny; Bloom, Paul

    2016-09-01

    By age 6, children typically share an equal number of resources between themselves and others. However, fairness involves not merely that each person receive an equal number of resources ("numerical equality") but also that each person receive equal quality resources ("quality equality"). In Study 1, children (N = 87, 3-10 years) typically split four resources "two each" by age 6, but typically monopolized the better two resources until age 10. In Study 2, a new group of 6- to 8-year-olds (N = 32) allocated resources to third parties according to quality equality, indicating that children in this age group understand that fairness requires both types of equality. © 2016 The Authors. Child Development © 2016 Society for Research in Child Development, Inc.

  6. Equality of Opportunity and Equality of Outcome

    Science.gov (United States)

    Kodelja, Zdenko

    2016-01-01

    The report on the findings of extensive empirical research on equality of educational opportunities carried out in the United States on a very large sample of public schools by Coleman and his colleagues has had a major impact on education policy and has given rise to a large amount of research and various interpretations. However, as some…

  7. Kinetic theory of gases

    CERN Document Server

    Kauzmann, Walter

    2012-01-01

    Monograph and text supplement for first-year students of physical chemistry focuses chiefly on the molecular basis of important thermodynamic properties of gases, including pressure, temperature, and thermal energy. 1966 edition.

  8. AC BREAKDOWN IN GASES

    Science.gov (United States)

    electron- emission (multipactor) region, and (3) the low-frequency region. The breakdown mechanism in each of these regions is explained. An extensive bibliography on AC breakdown in gases is included.

  9. Reale Gase, tiefe Temperaturen

    Science.gov (United States)

    Heintze, Joachim

    Wir werden uns in diesem Kapitel zunächst mit der van der Waals'schen Zustandsgleichung befassen. In dieser Gleichung wird versucht, die Abweichungen, die reale Gase vom Verhalten idealer Gase zeigen, durch physikalisch motivierte Korrekturterme zu berücksichtigen. Es zeigt sich, dass die van derWaals-Gleichung geeignet ist, nicht nur die Gasphase, sondern auch die Phänomene bei der Verflüssigung von Gasen und den kritischen Punkt zu beschreiben.

  10. Gases in uranium exploration

    International Nuclear Information System (INIS)

    Wright, R.J.; Pacer, J.C.

    1981-01-01

    Interest continues to grow in the use of helium and radon detection as a uranium exploration tool because, in many instances, these radiogenic gases are the only indicators of deeply buried mineralization. The origin of these gases, their migration in the ground, the type of samples and measurement techniques are discussed. Case histories of comparative tests conducted on known uranium deposits at three geologically diverse sites in the United States of America are also presented. (author)

  11. Gender equality and meritocracy

    OpenAIRE

    Powell, Stina

    2016-01-01

    This thesis examines how gender equality measures and discourses are reconciled with notions of merit in academia. Gender equality is often defined as equal rights for women and men and has become a widely accepted political goal and vision. Meritocratic principles build on the assumption that everyone, regardless of gender, class, race and sexuality, has the same opportunities to advance provided they are sufficiently hardworking and intelligent. Meritocratic principles thus build on the ass...

  12. Asynchronous LMS adaptive equalization

    NARCIS (Netherlands)

    Bergmans, J.W.M.; Lin, M.Y.; Modrie, D.; Otte, R.

    2005-01-01

    Digital data receivers often operate at a fixed sampling rate 1/Ts that is asynchronous to the baud rate 1/T. A digital equalizer that processes the incoming signal will also operate in the asynchronous clock domain. Existing adaptation techniques for this equalizer involve an error sequence ek that

  13. Early Understanding of Equality

    Science.gov (United States)

    Leavy, Aisling; Hourigan, Mairéad; McMahon, Áine

    2013-01-01

    Quite a bit of the arithmetic in elementary school contains elements of algebraic reasoning. After researching and testing a number of instructional strategies with Irish third graders, these authors found effective methods for cultivating a relational concept of equality in third-grade students. Understanding equality is fundamental to algebraic…

  14. Is Equality Fair?

    Directory of Open Access Journals (Sweden)

    Arthur Tarasov

    2015-11-01

    Full Text Available This paper attempts to answer the question whether people consider decisions that lead to equal outcomes fair. I find that this is not always the case. In an experiment where subjects are given equal opportunities to choose how to divide money between each other in a two-player game, any strategy is perceived to be fair more than half the time, including the profit-maximizing strategy. The equal divisions that lead to equal outcomes are sometimes considered unfair by both players. Moreover, players frequently punished the others, whose decisions led to equal outcomes. I hypothesize that such punishments occur because people have different conceptions of what a fair outcome and fair punishment are

  15. Greenhouse Gases and Animal Agriculture

    Energy Technology Data Exchange (ETDEWEB)

    Takahashi, J. (ed.) [Department of Animal Science, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido (Japan); Young, B.A. (ed.) [The University of Queensland, Gatton, Queensland 4343 (Australia)

    2002-07-01

    Reports from interdisciplinary areas including microbiology, biochemistry, animal nutrition, agricultural engineering and economics are integrated in this proceedings. The major theme of this book is environmental preservation by controlling release of undesirable greenhouse gases to realize the sustainable development of animal agriculture. Technology exists for the effective collection of methane generated from anaerobic fermentation of animal effluent and its use as a biomass energy source. Fossil fuel consumption can be reduced and there can be increased use of locally available energy sources. In addition, promoting environmentally-conscious agriculture which does not rely on the chemical fertilizer can be realized by effective use of animal manure and compost products.

  16. Shale gases, a windfall for France?

    International Nuclear Information System (INIS)

    Tonnac, Alain de; Perves, Jean-Pierre

    2013-11-01

    After having recalled the definition and origin of shale gases, the different non conventional gases and their exploitation techniques (hydraulic fracturing and horizontal drilling) this report examines whether these gases are an opportunity for France. Some characteristics and data of the fossil and gas markets are presented and commented: world primary energy consumption, proved reserves of non conventional gases and their locations, European regions which may possess reserves of shale gases and coal-bed methane, origins of gas imports in France. The second part addresses shale gas deposits and their exploitation: discussion of the influence of the various rock parameters, evolution of production. The third part discusses the exploitation techniques and specific drilling tools. The issue of exploitation safety and security is addressed as well as the associated controversies: about the pollution of underground waters, about the fact that deep drillings result in pollution, about the risks associated with hydraulic fracturing and injections of chemical products, about the hold on ground and site degradation, about water consumption, about pollution due to gas pipeline leakage, about seismic risk, about noise drawbacks, about risks for health, about exploration and production authorization and license, and about air pollution and climate. The last part addresses the French situation and its future: status of the energy bill, recommendations made by a previous government, cancellation of authorizations, etc. Other information are provided in appendix about non conventional hydrocarbons, about shale gas exploitation in the USA, and about the Lacq gas

  17. Curiosities of arithmetic gases

    International Nuclear Information System (INIS)

    Bakas, I.; Bowick, M.J.

    1991-01-01

    Statistical mechanical systems with an exponential density of states are considered. The arithmetic analog of parafermions of arbitrary order is constructed and a formula for boson-parafermion equivalence is obtained using properties of the Riemann zeta function. Interactions (nontrivial mixing) among arithmetic gases using the concept of twisted convolutions are also introduced. Examples of exactly solvable models are discussed in detail

  18. Strongly interacting Fermi gases

    Directory of Open Access Journals (Sweden)

    Bakr W.

    2013-08-01

    Full Text Available Strongly interacting gases of ultracold fermions have become an amazingly rich test-bed for many-body theories of fermionic matter. Here we present our recent experiments on these systems. Firstly, we discuss high-precision measurements on the thermodynamics of a strongly interacting Fermi gas across the superfluid transition. The onset of superfluidity is directly observed in the compressibility, the chemical potential, the entropy, and the heat capacity. Our measurements provide benchmarks for current many-body theories on strongly interacting fermions. Secondly, we have studied the evolution of fermion pairing from three to two dimensions in these gases, relating to the physics of layered superconductors. In the presence of p-wave interactions, Fermi gases are predicted to display toplogical superfluidity carrying Majorana edge states. Two possible avenues in this direction are discussed, our creation and direct observation of spin-orbit coupling in Fermi gases and the creation of fermionic molecules of 23Na 40K that will feature strong dipolar interactions in their absolute ground state.

  19. Radiation effects in gases

    International Nuclear Information System (INIS)

    Leonhardt, J.W.

    1985-01-01

    Problems in the studies of radiation effects in gases are discussed. By means of ionization- excitation- and electron-capture yields various applications are characterized: ionization detectors, X-ray detectors, radionuclide battery, and radiation-induced chemical gas-phase reactions. Some new results of basic research in respect to the SO 2 oxidation are discussed. (author)

  20. The greenhouse effect gases

    International Nuclear Information System (INIS)

    2006-06-01

    This road-map proposes by the Group Total aims to inform the public on the greenhouse effect gases. It presents the greenhouses effect as a key component of the climate system, the impacts of the human activity, the foreseeable consequences of global warming, the Kyoto protocol and Total commitment in the domain. (A.L.B.)

  1. Late production of hydrocarbon gases in sedimentary basins: kinetic and isotopic study; Genese tardive des gaz hydrocarbures dans les bassins sedimentaires: etude cinetique et isotopique

    Energy Technology Data Exchange (ETDEWEB)

    Lorant, F.

    1999-06-23

    the mechanisms of cracking and the isotopic processes. Following this concept, a general class-compound model for the production and the degradation of oil and gas, including the calculation of the isotopic compositions, was set up. The kinetic scheme, based on that proposed by Behar et at. (1992), comprises 10 first-order reactions whose pre exponential factors (A) are not all the same. The various kinetic and isotopic parameters were determined on the basis of pyrolysis experiments performed on an immature Type II kerogen. The first simulations at low temperature show that this model can reproduce isotopic trends that are consistent with natural observations. However the current uncertainty on the isotopic parameters does not yet allow a confident utilization of the model to predict the {delta}{sup 13}C of hydrocarbon gases is the geological conditions. (author)

  2. Process of radioactive waste gases

    International Nuclear Information System (INIS)

    Queiser, H.; Schwarz, H.; Schroter, H.J.

    1975-01-01

    A method is described in which the radiation level of waste gases from nuclear power plants containing both activation and fission gases is controlled at or below limits permitted by applicable standards by passing such gases, prior to release to the atmosphere, through an adsorptive delay path including a body of activated carbon having the relation to the throughput and character of such gases. (U.S.)

  3. Coaxial transmission line - Equalization

    International Nuclear Information System (INIS)

    Bonnerue, J.L.; Fremont, Jacques; Haubtmann, Jack; Pillon, Gerard.

    1981-09-01

    The transmission of electrical signal through a coaxial line is not perfect and signal distortions are increased as much as the frequency spectrum is extended. We have designed and achieved passive filters (named equalizers) with transfer functions which are inverse of coaxial transfer functions. Doing so our attempt is to avoid definitive loss of information in the recorded data. The main feature of our equalization method lies in the fact it could be either an electrical or a numerical correction or both of them. Some examples in the use of this technique are also proposed [fr

  4. Gender equality revisited:

    DEFF Research Database (Denmark)

    Rostgaard, Tine; B. Eydal, G.

    2011-01-01

    The Nordic childcare policy model is often reviewed and even recommended internationally for its contribution to gender equality, high female labour force participation and, perhaps more indirectly, to a high fertility rate. Nordic childcare services and parental leave schemes have thus been...... portrayed in the literature as policies which have managed to facilitate a work–family model of dual earners and dual carers. However, the recent introduction of cash-for-care schemes seems to go against the Nordic dual earner/dual carer model and ideals of gender equality, in supporting parental (maternal...

  5. Gender equality mainstreaming: Implications for poverty reduction ...

    African Journals Online (AJOL)

    Gender equality mainstreaming: Implications for poverty reduction and sustainable development in Abia State of Nigeria. ... Empowerment of women when pursued beyond mere rhetoric and instrumentation, it will improve their wellbeing, self esteem, resource allocation, political voice and increased productivity generally.

  6. Entrepreneur for Equality

    DEFF Research Database (Denmark)

    Duncan, Russell

    Focuses on the first Republican Governor of the state of Georgia during the period of race adjustment and national reconstruction after the American Civil War. Bullock led the way to business connections in creating a New South, but he was best known for his steadfast efforts at human equality fo...

  7. Equal Educational Opportunity?

    Science.gov (United States)

    Morris, Lorenzo

    1980-01-01

    Holds that the "Bakke" decision simply reaffirmed an insufficient commitment to equal opportunities for Blacks in higher education. Reviews several studies, including research conducted at the Institute for the Study of Educational Policy (ISEP) that has focused on the social and economic context of educational discrimination. (GC)

  8. Fight For Equality

    Science.gov (United States)

    Mink, Patsy T.

    1973-01-01

    In this presentation to the annual conventions of the NAWDAC and the ACPA (Cleveland 1973) the author, a Congresswoman from Hawaii, deplores the practice of some counselors of directing women students into traditional women's courses. She urges college counselors and personnel workers to join in the struggle to achieve equal educational and…

  9. Equal Rights Monitor

    NARCIS (Netherlands)

    Saskia Keuzenkamp; Ko Oudhof

    2000-01-01

    Original title: Emancipatiemonitor 2000. How is the emancipation process of women in the Netherlands progressing? What has been achieved? Have women already achieved equality, and have men accepted the sharing of power and responsibility? Was the emancipation process mainly a phenomenon of

  10. 49 CFR 229.43 - Exhaust and battery gases.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 4 2010-10-01 2010-10-01 false Exhaust and battery gases. 229.43 Section 229.43... § 229.43 Exhaust and battery gases. (a) Products of combustion shall be released entirely outside the... conditions. (b) Battery containers shall be vented and batteries kept from gassing excessively. ...

  11. On Classical Ideal Gases

    Directory of Open Access Journals (Sweden)

    Laurent Chusseau

    2013-02-01

    Full Text Available We show that the thermodynamics of ideal gases may be derived solely from the Democritean concept of corpuscles moving in vacuum plus a principle of simplicity, namely that these laws are independent of the laws of motion, aside from the law of energy conservation. Only a single corpuscle in contact with a heat bath submitted to a z and t-invariant force is considered. Most of the end results are known but the method appears to be novel. The mathematics being elementary, the present paper should facilitate the understanding of the ideal gas law and of classical thermodynamics even though not-usually-taught concepts are being introduced.

  12. Light equalization radiography

    International Nuclear Information System (INIS)

    Kruger, R.A.; Reinecke, D.R.; Power, R.L.

    1989-01-01

    An electro-optical, radiographic film dodging technique has been developed that can restore lost image contrast on underexposed regions of radiographs. The device consists of a low-resolution x-ray camera and a scanning, light-exposure array. Both are controlled by a microcomputer. The theory of operation has been developed, and technical requirements for implementing light-equalization radiogrpahy have been defined. Initial clinical results with a prototype have been analyzed and compared with results of conventional films

  13. Not all digital word of mouth is created equal: Understanding the respective impact of consumer reviews and microblogs on new product success

    OpenAIRE

    Marchand, A.; Hennig-Thurau, T.; Wiertz, C.

    2017-01-01

    The expansion of the Internet and social media have triggered a differentiation of the word-of-mouth (WOM) concept, with consumer communication about brands and products now taking place in various settings and forms. Two important digital WOM types are microblogs and consumer reviews. To clarify their differential roles for product success, this study offers a theoretical framework of the influence of these two types of WOM, drawing from consumer information search theory and diffusion theor...

  14. Energy efficiency and greenhouse gases

    International Nuclear Information System (INIS)

    Hamburg, A.; Martins, A.; Pesur, A.; Roos, I.

    1996-01-01

    Estonia's energy balance for 1990 - 1994 is characterized by the dramatic changes in the economy after regaining independence in 1991. In 1990 - 1993, primary energy supply decreased about 1.9 times. The reasons were a sharp decrease in exports of electric energy and industrial products, a steep increase in fuel prices and the transition from the planned to a market-oriented economy. Over the same period, the total amount of emitted greenhouse gases decreased about 45%. In 1993, the decrease in energy production and consumption stopped, and in 1994, a moderate increase occurred (about 6%), which is a proof stabilizing economy. Oil shale power engineering will remain the prevailing energy resource for the next 20 - 25 years. After stabilization, the use of oil shale will rise in Estonia's economy. Oil shale combustion in power plants will be the greatest source of greenhouse gases emissions in near future. The main problem is to decrease the share of CO 2 emissions from the decomposition of carbonate part of oil shale. This can be done by separating limestone particles from oil shale before its burning by use of circulating fluidized bed combustion technology. Higher efficiency of oil shale power plants facilitates the reduction of CO 2 emissions per generated MWh electricity considerably. The prognoses for the future development of power engineering depend essentially on the environmental requirements. Under the highly restricted development scenario, which includes strict limitations to emissions (CO 2 , SO 2 , thermal waste) and a severe penalty system, the competitiveness of nuclear power will increase. The conceptual steps taken by the Estonian energy management should be in compliance with those of neighboring countries, including the development programs of the other Baltic states

  15. THE EQUALITY PRINCIPLE REQUIREMENTS

    Directory of Open Access Journals (Sweden)

    CLAUDIA ANDRIŢOI

    2013-05-01

    Full Text Available The problem premises and the objectives followed: the idea of inserting the equality principle between the freedom and the justice principles is manifested in positive law in two stages, as a general idea of all judicial norms and as requirement of the owner of a subjective right of the applicants of an objective law. Equality in face of the law and of public authorities can not involve the idea of standardization, of uniformity, of enlisting of all citizens under the mark of the same judicial regime, regardless of their natural or socio-professional situation. Through the Beijing Platform and the position documents of the European Commission we have defined the integrative approach of equality as representing an active and visible integration of the gender perspective in all sectors and at all levels. The research methods used are: the conceptualist method, the logical method and the intuitive method necessary as means of reasoning in order to argue our demonstration. We have to underline the fact that the system analysis of the research methods of the judicial phenomenon doesn’t agree with “value ranking”, because one value cannot be generalized in rapport to another. At the same time, we must fight against a methodological extremism. The final purpose of this study is represented by the reaching of the perfecting/excellence stage by all individuals through the promotion of equality and freedom. This supposes the fact that the existence of a non-discrimination favourable frame (fairness represents a means and a condition of self-determination, and the state of perfection/excellency is a result of this self-determination, the condition necessary for the obtaining of this nondiscrimination frame for all of us and in conditions of freedom for all individuals, represents the same condition that promotes the state of perfection/excellency. In conclusion we may state the fact that the equality principle represents a true catalyst of the

  16. Removing radioactive noble gases from nuclear process off-gases

    International Nuclear Information System (INIS)

    Lofredo, A.

    1977-01-01

    A system is claimed for separating, concentrating and storing radioactive krypton and xenon in the off-gases from a boiling water reactor, wherein adsorption and cryogenic distillation are both efficiently used for rapid and positive separation and removal of the radioactive noble gases, and for limiting such gases in circulation in the system to low inventory at all times, and wherein the system is self-regulating to eliminate operator options or attention

  17. Investigations on the applicability of pure gases in the transport of nuclear reaction products in a gas jet, and the use of this gas jet for radiochemical separation processes

    International Nuclear Information System (INIS)

    Aumann, D.C.; Presuhn, R.; Weismann, D.

    1975-01-01

    Earlier investigations on the effectivity of the transport of nuclear reaction products in a gas jet were continued where the transporting properties of ethylene and CO 2 in particular were examined in detail. By means of selected measurements, it is shown what influence the temperature of the gas bottle and that of the pressure releaser has on the transport yield. It is attempted from the results to explain the formation of aerosols in pure gases. The fission fragments of the spontaneous fission of Cf-252 are gamma-spectrometrically measured to determine the yields, or the total yield is determined by simple activity measurements. The determination of the isomeric ratio of Cs 138 m/g is described as an example of the possible application of a gas jet. Furthermore, an experiment for the search of super-heavy elements is suggested. (RB/LH) [de

  18. Investigations on the applicability of pure gases in the transport of nuclear reaction products in a gas jet, and the use of this gas jet for radiochemical separation processes

    International Nuclear Information System (INIS)

    Aumann, D.C.; Presuhn, R.; Weismann, D.

    1975-01-01

    Earlier investigations on the effectivity of the transport of nuclear reaction products in a gas jet were continued, the transporting properties of ethylene and CO 2 being particularly examined in detail. By means of selected measurements, it is shown what influence the temperature of the gas bottle and that of the pressure releaser has on the transport yield. It is attempted from the results to explain the formation of aerosols in pure gases. The fission fragments of the spontaneous fission of Cf-252 are gamma-spectrometrically measured to determine the yields, or the total yield is determined by simple activity measurements. The determination of the isomeric ratio of Cs 138 m/g is described as an example of the possible application of a gas jet. Furthermore, an experiment for the search of super-heavy elements is suggested. (RB/LH) [de

  19. Why the Equal Rights Amendment?

    Science.gov (United States)

    Denmark, Florence L.

    The Equal Rights Amendment proposes to ensure constitutional protection against all legislative sex discrimination. "Separate but Equal" standards, be they legal, social or psychological, are inevitably incompatable with equal protection under the law and act as a barrier to each individual's freedom for self determination. Equal rights,…

  20. Selective noble gases monitoring

    International Nuclear Information System (INIS)

    Janecka, S.; Jancik, O.; Kapisovsky, V.; Kubik, I.; Sevecka, S.

    1995-01-01

    The monitoring of leak releases from ventilation stack of NPP requires a system by several orders more sensitive then currently used radiometer Kalina, designed to cover the range up to a design-based accident. To reach this goal a noble gases monitor with a germanium detector (MPVG) has been developed. It enables nuclide selective monitoring of current value of volume activity of particular nuclides in ventilation stack and daily releases of noble gases (balancing). MPVG can be viewed as a system build of three levels of subsystem: measuring level; control level; presentation level. Measuring level consists of gamma-spectroscopy system and operational parameters monitoring unit (flow rate, temperature, humidity). Control level provides communication between presentation and measuring level, acquisition of operational parameters and power supply. The presentation level of MPVG enables: 1) the measured data storage in predetermined time intervals; 2) the presentation of measured and evaluated values of radiation characteristics. The monitored radionuclides - default set: argon-41, krypton-85m, krypton-87, krypton-88, krypton-89, xenon-131m, xenon-133, xenon-133m, xenon-135, xenon-135m, xenon-137 and xenon-138. The values of volume activities observed at maximum releases have been approximately ten times higher. In that case in balancing some other nuclides exceed corresponding detection limits: 88 Kr(67; 22) Bq/m 3 ; 85m Kr(17; 7) Bq/m 3 ; 135m Xe(7.1; 0.5) Bq/m 3 ; 138 Xe(5.9; 0.9) Bq/m 3 . (J.K.)

  1. Selective noble gases monitoring

    Energy Technology Data Exchange (ETDEWEB)

    Janecka, S; Jancik, O; Kapisovsky, V; Kubik, I; Sevecka, S [Nuclear Power Plants Research Institute, a.s., Trnava (Slovakia)

    1996-12-31

    The monitoring of leak releases from ventilation stack of NPP requires a system by several orders more sensitive then currently used radiometer Kalina, designed to cover the range up to a design-based accident. To reach this goal a noble gases monitor with a germanium detector (MPVG) has been developed. It enables nuclide selective monitoring of current value of volume activity of particular nuclides in ventilation stack and daily releases of noble gases (balancing). MPVG can be viewed as a system build of three levels of subsystem: measuring level; control level; presentation level. Measuring level consists of gamma-spectroscopy system and operational parameters monitoring unit (flow rate, temperature, humidity). Control level provides communication between presentation and measuring level, acquisition of operational parameters and power supply. The presentation level of MPVG enables: 1) the measured data storage in predetermined time intervals; 2) the presentation of measured and evaluated values of radiation characteristics. The monitored radionuclides - default set: argon-41, krypton-85m, krypton-87, krypton-88, krypton-89, xenon-131m, xenon-133, xenon-133m, xenon-135, xenon-135m, xenon-137 and xenon-138. The values of volume activities observed at maximum releases have been approximately ten times higher. In that case in balancing some other nuclides exceed corresponding detection limits: {sup 88}Kr(67; 22) Bq/m{sup 3}; {sup 85m}Kr(17; 7) Bq/m{sup 3}; {sup 135m}Xe(7.1; 0.5) Bq/m{sup 3}; {sup 138}Xe(5.9; 0.9) Bq/m{sup 3}. (J.K.).

  2. Universal relaxation times for electron and nucleon gases

    OpenAIRE

    Pelc, M.; Marciak-Kozlowska, J.; Kozlowski, M.

    2007-01-01

    In this paper we calculate the universal relaxation times for electron and nucleon fermionic gases. We argue that the universal relaxation time tau(i) is equal tau(i)=h/m square v(i) where v(i)=alpha(i)c and alpha(1)=0.15 for nucleon gas and alpha(2)=1/137 for electron gas, c=light velocity. With the universal relaxation time we formulate the thermal Proca equation for fermionic gases. Key words: universal relaxation time, thermal universal Proca equation.

  3. Predição da degradação da matéria seca pelo volume de gases utilizando a técnica in vitro semi-automática de produção de gases Prediction of dry matter degradation from volume of gas production using the in vitro semi-automatic gas production technique

    Directory of Open Access Journals (Sweden)

    Ú.T. Nogueira

    2006-10-01

    Full Text Available Estimou-se a degradação da matéria seca (DMS via produção de gases (PG por meio de equações. Foram agrupados dados de volume de gases e DMS de oito forrageiras (Brachiaria brizantha, Brachiaria decumbens, feno de Cynodon spp, silagem de milho, silagem de milheto, sorgo de corte, capim-elefante e cana-de-açúcar e de milho em grão. Os dados de DMS obtidos em laboratório foram comparados à DMS obtida pelas equações de regressão. Apesar dos altos coeficientes de determinação, os resultados demonstraram a impossibilidade de estimar a DMS via PG pelas equações geral, de dois e de três pontos.The dry matter degration (DMD was estimated through volume of gas produced (GP during the in vitro fermentation. The DMD from eight forages (Brachiaria brizantha, Brachiaria decumbens, cynodon hay, maize silage, Pennisetum glaucon, sorghum, elephant grass and sugarcane and corn grain were obtained and were compared with the DMD estimated using regression equations. The results showed the GP can not predict the DMD due to inocula effects, chemical composition of substrate or losses of particles of soluble material during filtration process.

  4. Equality Matters: The Critical Implications of Precisely Defining Equality

    Science.gov (United States)

    Faulkner, Valerie; Walkowiak, Temple; Cain, Chris; Lee, Carrie

    2016-01-01

    Equality is such an important concept for children to develop. In this article it is argued that a precise definition is needed to ensure that students are provided with a consistent "picture" of what it is that equality really means.

  5. Gender Summit 2011: Equality Research and Innovation Through Equality

    Czech Academy of Sciences Publication Activity Database

    Tenglerová, Hana

    2011-01-01

    Roč. 19, č. 2 (2011), s. 72-74 ISSN 1210-6658. [European Gender Summit 2011: Equality Research and Innovation Through Equality . Brusel, 07.11.2011-08.11.2011] R&D Projects: GA MŠk OK08007 Institutional research plan: CEZ:AV0Z70280505 Keywords : gender equality * science * policy Subject RIV: AO - Sociology, Demography

  6. 36 CFR 254.12 - Value equalization; cash equalization waiver.

    Science.gov (United States)

    2010-07-01

    ... 36 Parks, Forests, and Public Property 2 2010-07-01 2010-07-01 false Value equalization; cash... AGRICULTURE LANDOWNERSHIP ADJUSTMENTS Land Exchanges § 254.12 Value equalization; cash equalization waiver. (a..., either with or without adjustments of relative values as compensation for various costs, the parties to...

  7. Getting to Equal : Promoting Gender Equality through Human Development

    OpenAIRE

    World Bank

    2011-01-01

    To achieve gender equality and empower women, it is essential to invest in human development. The World Development Report 2012: Gender Equality and Development (hereafter WDR 2012) brings the best global evidence to bear on the relationship between gender equality and development. A central theme running through the report is how investments and outcomes in human development namely health...

  8. 48 CFR 852.211-73 - Brand name or equal.

    Science.gov (United States)

    2010-10-01

    ... 48 Federal Acquisition Regulations System 5 2010-10-01 2010-10-01 false Brand name or equal. 852... Brand name or equal. As prescribed in 811.104-71, insert the following clause: Brand Name or Equal (JAN 2008) (Note: As used in this clause, the term “brand name” includes identification of products by make...

  9. 48 CFR 1852.210-70 - Brand name or equal.

    Science.gov (United States)

    2010-10-01

    ... 48 Federal Acquisition Regulations System 6 2010-10-01 2010-10-01 true Brand name or equal. 1852... 1852.210-70 Brand name or equal. As prescribed in 1810.011-70(a), insert the following provision: Brand Name or Equal (DEC 1988) (a) As used in this provision, “brand name” means identification of products...

  10. TAXATION. FAIRNESS. EQUALITY

    Directory of Open Access Journals (Sweden)

    Morar Ioan Dan

    2014-12-01

    of the tax burden between them, depending on how the tax base, depending on the type of taxpayer and according to other criteria. Another coordinated taxation is part of contemporary consumerist polticilor new tax, taxing certain income, especially income individuals is marked by the overall objective of capitalist society, that consumption growth. Fiscal policies are policies the new contemporary consumerism. And this phenomenon influences the distribution of the tax burden among taxpayers, more or less fair. What is tax fairness and how we can quantify? Here's a question that I try to raspunt from equality before the law tax payers. Equality before the tax law is not a primary goal of modern tax policy, it losing ground to tax efficiency goals and its economic and social components. On the other hand though fiscal phenomenon can help to ensure social peace through taxation to keep Sean absolute size of the tax burden and the fact that all are equal before the law, tax law and within given social policies in broadly, social security or insurance in respect restrains can be promoted by themselves and less by fiscal policy.

  11. Kinetic Theory of Granular Gases

    Energy Technology Data Exchange (ETDEWEB)

    Trizac, Emmanuel [Center of Theoretical Biological Physics, UC San Diego, La Jolla, CA 92093-0374 (United States); Laboratoire de Physique Theorique et Modeles Statistiques, Campus Universitaire, 91405 Orsay (France)

    2005-11-25

    tangential and normal restitution coefficients, that are again velocity dependent. Th is seems to be the price of a consistent approach, which does not lend itself to much insight. In addition, the behaviour of driven systems is not addressed, whereas in the realm of granular media, force-free systems are the exception rather than the rule. The differences between constant {epsilon} and visco-elastic models is presumably less pronounced in the driven case. Study of driven systems also reveals that the rheology of granular gases is intrinsically non-Newtonian, which is a key feature. Finally, the powerful direct simulation Monte Carlo technique is not described, whereas it is an important tool, particularly relevant for the physics of the Boltzmann equation, and straightforward to implement in its simplest version. N Brilliantov and T Poeschel concentrate on the (equally relevant) molecular dynamics method instead. In conclusion, the book fills a gap in the field. The companion webpage from where molecular dynamics and symbolic algebra programs can be downloaded is also useful. (book review)

  12. Kinetic Theory of Granular Gases

    International Nuclear Information System (INIS)

    Trizac, Emmanuel

    2005-01-01

    coefficients, that are again velocity dependent. Th is seems to be the price of a consistent approach, which does not lend itself to much insight. In addition, the behaviour of driven systems is not addressed, whereas in the realm of granular media, force-free systems are the exception rather than the rule. The differences between constant ε and visco-elastic models is presumably less pronounced in the driven case. Study of driven systems also reveals that the rheology of granular gases is intrinsically non-Newtonian, which is a key feature. Finally, the powerful direct simulation Monte Carlo technique is not described, whereas it is an important tool, particularly relevant for the physics of the Boltzmann equation, and straightforward to implement in its simplest version. N Brilliantov and T Poeschel concentrate on the (equally relevant) molecular dynamics method instead. In conclusion, the book fills a gap in the field. The companion webpage from where molecular dynamics and symbolic algebra programs can be downloaded is also useful. (book review)

  13. Internationalisation and Equality

    Directory of Open Access Journals (Sweden)

    Louise Ackers

    2010-12-01

    Full Text Available This paper examines the “tension” in the debate around human resources in science between the promotion of internationalisation and mobility, on the one hand, and the promotion of equality and work-life balance, on the other. In an attempt to move away from the current polarity of mobility-immobility and understand the importance of viewing mobility as a continuum, the paper emphasises the contribution of new forms of mobility and particularly of short stays to the internationalisation process that has become so critical to career progression. It illustrates the specific opportunities that certain forms of short-stay mobility present both in terms of optimizing knowledge exchange processes and “internationalisation” but also to “potentially mobile” women and men with personal and caring obligations. Attention to the “far end” of the continuum draws attention to the role that “business visits” and on-going “travel” play in career enhancement. Migration research has rather neglected these forms of movement. Recent research on business travel would suggest that these forms of movement are highly gendered and present unique challenges to people with personal and caring responsibilities.

  14. Canonical partition functions: ideal quantum gases, interacting classical gases, and interacting quantum gases

    Science.gov (United States)

    Zhou, Chi-Chun; Dai, Wu-Sheng

    2018-02-01

    In statistical mechanics, for a system with a fixed number of particles, e.g. a finite-size system, strictly speaking, the thermodynamic quantity needs to be calculated in the canonical ensemble. Nevertheless, the calculation of the canonical partition function is difficult. In this paper, based on the mathematical theory of the symmetric function, we suggest a method for the calculation of the canonical partition function of ideal quantum gases, including ideal Bose, Fermi, and Gentile gases. Moreover, we express the canonical partition functions of interacting classical and quantum gases given by the classical and quantum cluster expansion methods in terms of the Bell polynomial in mathematics. The virial coefficients of ideal Bose, Fermi, and Gentile gases are calculated from the exact canonical partition function. The virial coefficients of interacting classical and quantum gases are calculated from the canonical partition function by using the expansion of the Bell polynomial, rather than calculated from the grand canonical potential.

  15. Use of gases in dairy manufacturing: A review.

    Science.gov (United States)

    Adhikari, Bhaskar Mani; Truong, Tuyen; Bansal, Nidhi; Bhandari, Bhesh

    2017-06-13

    Use of gases (air, carbon dioxide and nitrogen) has been practiced in the manufacture of dairy products (i.e., ice cream, whipped cream and butter) to improve their texture, mouthfeel and shelf-life extension. Many attempts have also been made to incorporate other gases such as hydrogen, nitrous oxide, argon, xenon, and helium into the dairy systems for various product functionalities such as whipping, foaming, texture, aroma enhancement, and therapeutic properties. The gases can be dissolved in aqueous and fat phases or remain in the form of bubbles stabilized by protein or fat particles. The gas addition or infusion processes are typically simple and have been used commercially. This review focuses on the use of various gases in relation to their individually physical properties along with their specific roles in manufacturing and controlling quality of dairy products. It also recaps on how gases are included in the dairy systems. The information is important in understanding of addition of specific gas(es) into food systems, particularly dairy products, that potentially provide intervention opportunities for modifying and/or creating innovative food structures and functionalities.

  16. Process for scavenging hydrogen sulfide from hydrocarbon gases

    International Nuclear Information System (INIS)

    Fox, I.

    1981-01-01

    A process for scavenging hydrogen sulfide from hydrocarbon gases utilizes iron oxide particles of unique chemical and physical properties. These particles have large surface area, and are comprised substantially of amorphous Fe 2 O 3 containing a crystalline phase of Fe 2 O 3 , Fe 3 O 4 and combinations thereof. In scavenging hydrogen sulfide, the iron oxide particles are suspended in a liquid which enters into intimate mixing contact with hydrocarbon gases; the hydrogen sulfide is reacted at an exceptional rate and only acid-stable reaction products are formed. Thereafter, the sweetened hydrocarbon gases are collected

  17. Economic Hazardous Gases Management for SOX Removal from Flue Gases

    International Nuclear Information System (INIS)

    Isaack, S.L.; Mohi, M.A.; Mohamed, S.T.

    1995-01-01

    Hazardous gases emerging from industries accumulate as pollutants in air and falls as acid rains resulting also in water and soil pollution. To minimize environmental pollution, the present process is suggested in order to desulfurize flue gases resulting from burning fuel oil in a 100/MWh steam power plant. The process makes use of the cheap Ca C O 3 powder as the alkaline material to sequistre the sulphur oxide gases. The resulting sulphur compounds, namely calcium sulphate and gypsum have a great market demand as reducing and sulphiting agents in paper industry and as an important building material. About 44000 ton of gypsum could be produced yearly when treating flue gases resulting from a 100 MWh unit burning fuel oil. Feasibility study shows that a great return on investment could be achieved when applying the process. 1 fig

  18. Avalanches in insulating gases

    International Nuclear Information System (INIS)

    Verhaart, H.F.A.

    1982-01-01

    Avalanches of charged particles in gases are often studied with the ''electrical method'', the measurement of the waveform of the current in the external circuit. In this thesis a substantial improvement of the time resolution of the measuring setup, to be used for the electrical method, is reported. The avalanche is started by an N 2 -laser with a pulse duration of only 0.6 ns. With this laser it is possible to release a high number of primary electrons (some 10 8 ) which makes it possible to obtain sizeable signals, even at low E/p values. With the setup it is possible to analyze current waveforms with a time resolution down to 1.4 ns, determined by both the laser and the measuring system. Furthermore it is possible to distinguish between the current caused by the electrons and the current caused by the ions in the avalanche and to monitor these currents simultaneously. Avalanche currents are measured in N 2 , CO 2 , O 2 , H 2 O, air of varying humidity, SF 6 and SF 6 /N 2 mixtures. Depending on the nature of the gas and the experimental conditions, processes as diffusion, ionization, attachment, detachment, conversion and secondary emission are observed. Values of parameters with which these processes can be described, are derived from an analysis of the current waveforms. For this analysis already published theories and new theories described in this thesis are used. The drift velocity of both the electrons and the ions could be easily determined from measured avalanche currents. Special attention is paid to avalanches in air becasue of the practical importance of air insulation. (Auth.)

  19. Noble gases solubility in water

    International Nuclear Information System (INIS)

    Crovetto, Rosa; Fernandez Prini, Roberto.

    1980-07-01

    The available experimental data of solubility of noble gases in water for temperatures smaller than 330 0 C have been critically surveyed. Due to the unique structure of the solvent, the solubility of noble gases in water decreases with temperature passing through a temperature of minimum solubility which is different for each gas, and then increases at higher temperatures. As aresult of the analysis of the experimental data and of the features of the solute-solvent interaction, a generalized equation is proposed which enables thecalculation of Henry's coefficient at different temperatures for all noble gases. (author) [es

  20. Virial Coefficients from Unified Statistical Thermodynamics of Quantum Gases Trapped under Generic Power Law Potential in d Dimension and Equivalence of Quantum Gases

    Science.gov (United States)

    Bahauddin, Shah Mohammad; Mehedi Faruk, Mir

    2016-09-01

    From the unified statistical thermodynamics of quantum gases, the virial coefficients of ideal Bose and Fermi gases, trapped under generic power law potential are derived systematically. From the general result of virial coefficients, one can produce the known results in d = 3 and d = 2. But more importantly we found that, the virial coefficients of Bose and Fermi gases become identical (except the second virial coefficient, where the sign is different) when the gases are trapped under harmonic potential in d = 1. This result suggests the equivalence between Bose and Fermi gases established in d = 1 (J. Stat. Phys. DOI 10.1007/s10955-015-1344-4). Also, it is found that the virial coefficients of two-dimensional free Bose (Fermi) gas are equal to the virial coefficients of one-dimensional harmonically trapped Bose (Fermi) gas.

  1. Virial Coefficients from Unified Statistical Thermodynamics of Quantum Gases Trapped under Generic Power Law Potential in d Dimension and Equivalence of Quantum Gases

    International Nuclear Information System (INIS)

    Bahauddin, Shah Mohammad; Faruk, Mir Mehedi

    2016-01-01

    From the unified statistical thermodynamics of quantum gases, the virial coefficients of ideal Bose and Fermi gases, trapped under generic power law potential are derived systematically. From the general result of virial coefficients, one can produce the known results in d = 3 and d = 2. But more importantly we found that, the virial coefficients of Bose and Fermi gases become identical (except the second virial coefficient, where the sign is different) when the gases are trapped under harmonic potential in d = 1. This result suggests the equivalence between Bose and Fermi gases established in d = 1 (J. Stat. Phys. DOI 10.1007/s10955-015-1344-4). Also, it is found that the virial coefficients of two-dimensional free Bose (Fermi) gas are equal to the virial coefficients of one-dimensional harmonically trapped Bose (Fermi) gas. (paper)

  2. Quotation systems for greenhouse gases

    International Nuclear Information System (INIS)

    Trong, Maj Dang

    2000-01-01

    The article surveys recommendations from a Norwegian committee for implementing at a national level, the Kyoto protocol aims for reducing the total emissions of greenhouse gases from the industrial countries through quotation systems

  3. Greenhouse gases and global warming

    International Nuclear Information System (INIS)

    1995-01-01

    From previous articles we have learned about the complexities of our environment, its atmosphere and its climate system. we have also learned that climate change and, therefore global warm and cool periods are naturally occurring phenomena. Moreover, all scientific evidence suggests that global warming, are likely to occur again naturally in the future. However, we have not yet considered the role of the rates of climate change in affecting the biosphere. It appears that how quickly the climate changes may be more important than the change itself. In light of this concern, let us now consider the possibility that, is due to human activity. We may over the next century experience global warming at rates and magnitudes unparalleled in recent geologic history. The following questions are answered; What can we learn from past climates? What do we know about global climates over the past 100 years? What causes temperature change? What are the greenhouse gases? How much have concentration of greenhouse gases increased in recent years? Why are increases in concentrations of greenhouse of concern? What is the e nhanced greenhouse effect ? How can human activity impact the global climate? What are some reasons for increased concentrations of greenhouse gases? What are fossil fuel and how do they transform into greenhouse gases? Who are the biggest emitters of greenhouse gases? Why are canada per capita emissions of greenhouse gases relatively high? (Author)

  4. Gender equality and equal opportunity mechanisms in Italy

    Directory of Open Access Journals (Sweden)

    Mršević Zorica

    2007-01-01

    Full Text Available As a country of Southern European mentality Italy may be taken as the nearest-to-the-Balkans model of the gender equality mechanisms and necessity of their existence. Italy also might be taken as a model of domain and methods of functioning of the gender equality mechanisms as well as their connections with the EU development funds. Besides the Italian Ministry for Rights and Equal opportunities and the National Committee, the attention was paid to the whole range of local mechanisms and legal regulations dealing with advancement of women’s employment and counteracting discrimination on the labor market. In the text are analyzed through the five chapters the Italian mechanisms/institutions for gender equality as located within the European institutional environment but also within the context of Italian recent history of struggle against gender based discrimination. It was stressed that the essence of the accumulated European institutional wisdom is in diversity of the gender equality bodies rather then in their uniformity. Although the Italian mechanisms for gender equality are part of the European institutional environment their aim is to meet the internal needs for advancement of gender equality. Besides, the mechanisms also meet the demands of the international standards comprised in the documents issued by the UN and the EU. In European countries these mechanisms are frequently established and function in the domains of the labor and employment regulations, but also are located within the human rights portfolios while somewhere are connected with the minority rights and equal opportunity implementation.

  5. Reframing Inclusive Education: Educational Equality as Capability Equality

    Science.gov (United States)

    Terzi, Lorella

    2014-01-01

    In this paper, I argue that rethinking questions of inclusive education in the light of the value of educational equality--specifically conceived as capability equality, or genuine opportunities to achieve educational functionings--adds some important insights to the current debate on inclusive education. First, it provides a cohesive value…

  6. Gender Equality & Work: Are We There Yet?

    Directory of Open Access Journals (Sweden)

    Indira Hasanovic

    2015-01-01

    Full Text Available Gender is a social construct that outlines the roles, behaviors, activities and features that a particular society believes are appropriate for men and women. Gender equality is necessary in order to ensure a fair and productive labor market. Even though, Bosnia and Herzegovina has established legal framework including gender equality laws, women are still facing barriers to participation in the labor market. This research paper will indicate what are the main challenges behind the low participation of women in the labor market. It will provide information on gender differences; the main challenges, and also emphasize gender stereotypes which are contributing the gendered division in labor market.

  7. Americans misperceive racial economic equality.

    Science.gov (United States)

    Kraus, Michael W; Rucker, Julian M; Richeson, Jennifer A

    2017-09-26

    The present research documents the widespread misperception of race-based economic equality in the United States. Across four studies ( n = 1,377) sampling White and Black Americans from the top and bottom of the national income distribution, participants overestimated progress toward Black-White economic equality, largely driven by estimates of greater current equality than actually exists according to national statistics. Overestimates of current levels of racial economic equality, on average, outstripped reality by roughly 25% and were predicted by greater belief in a just world and social network racial diversity (among Black participants). Whereas high-income White respondents tended to overestimate racial economic equality in the past, Black respondents, on average, underestimated the degree of past racial economic equality. Two follow-up experiments further revealed that making societal racial discrimination salient increased the accuracy of Whites' estimates of Black-White economic equality, whereas encouraging Whites to anchor their estimates on their own circumstances increased their tendency to overestimate current racial economic equality. Overall, these findings suggest a profound misperception of and unfounded optimism regarding societal race-based economic equality-a misperception that is likely to have any number of important policy implications.

  8. Medical Need, Equality, and Uncertainty.

    Science.gov (United States)

    Horne, L Chad

    2016-10-01

    Many hold that distributing healthcare according to medical need is a requirement of equality. Most egalitarians believe, however, that people ought to be equal on the whole, by some overall measure of well-being or life-prospects; it would be a massive coincidence if distributing healthcare according to medical need turned out to be an effective way of promoting equality overall. I argue that distributing healthcare according to medical need is important for reducing individuals' uncertainty surrounding their future medical needs. In other words, distributing healthcare according to medical need is a natural feature of healthcare insurance; it is about indemnity, not equality. © 2016 John Wiley & Sons Ltd.

  9. Radioactive gases monitor system: tritium, radon, noble gases

    International Nuclear Information System (INIS)

    Egey, J.Z.; Matatagui, E.

    2015-01-01

    A system for monitoring the radioactive gases tritium, radon and noble gases is described. We present the description of the sensor and the associated electronics that have been developed to monitor the presence of radioactive gases in air or other gaseous effluents. The system has a high sensitivity and a wide range of operation. The sensor is an ionization chamber, featuring the internal circulation of the gas to monitor and the associated electronics has a resolution better than 10 E-15A (fA). It allows the detection of the individual pulses that are produced during the alpha decay of radon and its daughter elements. The measurement system is made up of a commercial data acquisition system connected to a computer. The acquired data is presented on a graphical display and it is stored for later processing and analysis. We have a system that is of simple construction and versatile. Here we present the experimental results. (authors) [es

  10. Identity, equality, and education

    Directory of Open Access Journals (Sweden)

    Alejandro Cerletti

    2013-01-01

    Full Text Available our current world introduces itself as a unique and omnipresent world: the world of the globalized capitalism in which all the relationships, to a greater or lesser extent, have been commercialized, and everything (products and information can arrive to every corner of the planet. diversity is accepted as one more element of the (commercial or cultural merchandise’s circulation, and fits a homogeneous frame in which everything has an allocated place. some contributions from alain badiou are employed in this work in order to deal with this matter, trying to show its constitutive scheme, and to offer some alternative perspectives. the main interest is to display the possibility of thinking a world that makes space to all the possible worlds, and not a world that is the result of the mere planetary subjugation to the expansion of the capital, nor the simple “tolerant” acceptance of the “other”. the link among humans’ conception will be the basis to re-think the education matter in today’s world.

  11. Hythane (H2 and CH4) production from unsaturated polyester resin wastewater contaminated by 1,4-dioxane and heavy metals via up-flow anaerobic self-separation gases reactor

    International Nuclear Information System (INIS)

    Mahmoud, Mohamed; Elreedy, Ahmed; Pascal, Peu; Sophie, Le Roux; Tawfik, Ahmed

    2017-01-01

    Highlights: • Bio-hythane production from polyester wastewater via UASG reactor was assessed. • Impacts of influent contamination by 1,4-dioxane and heavy metals were discussed. • Maximum volumetric H 2 and CH 4 productions of 0.12 and 1.06 L/L/d were achieved. • Significant drop in CH 4 production was resulted at OLR up to 1.07 ± 0.06 gCOD/L/d. • Bioenergy recovery through UASG economically achieved a net profit of 10,231 $/y. - Abstract: A long-term evaluation of hythane generation from unsaturated polyester resin wastewater contaminated by 1,4-dioxane and heavy metals was investigated in a continuous up-flow anaerobic self- separation gases (UASG) reactor inoculated with mixed culture. The reactor was operated at constant hydraulic retention time (HRT) of 96 h and different organic loading rates (OLRs) of 0.31 ± 0.04, 0.71 ± 0.08 and 1.07 ± 0.06 gCOD/L/d. Available data showed that volumetric hythane production rate was substantially increased from 0.093 ± 0.021 to 0.245 ± 0.016 L/L/d at increasing OLR from 0.31 ± 0.04 to 0.71 ± 0.08 gCOD/L/d. However, at OLR exceeding 1.07 ± 0.06 gCOD/L/d, it was dropped to 0.114 ± 0.016 L/L/d. The reactor achieved 1,4-dioxane removal efficiencies of 51.8 ± 2.8, 35.9 ± 1.6 and 26.3 ± 1.6% at initial 1,4-dioxane concentrations of 1.14 ± 0.28, 1.97 ± 0.41 and 4.21 ± 0.30 mg/L, respectively. Moreover, the effect and potential removal of the contaminated by heavy metals (i.e., Cu 2+ , Mn 2+ , Cr 3+ , Fe 3+ and Ni 2+ ) were highlighted. Kinetic modelling and microbial community dynamics were studied, according to each OLR, to carefully describe the UASG performance. The economic analysis showed a stable operation for the anaerobic digestion of unsaturated polyester resin wastewater using UASG, and the maximum net profit was achieved at OLR of 0.71 ± 0.08 gCOD/L/d.

  12. Gases and carbon in metals

    International Nuclear Information System (INIS)

    Jehn, H.; Fromm, E.; Hoerz, G.

    1978-01-01

    This issue is part of a series of data on 'gases and carbon in metals'. The present survey includes results from papers dealing with gases and carbon in actinides and recommends critically selected data for each element. Firstly data od binary systems are presented, starting with hydrogen and followed by carbon, nitrogen, oxygen, and rare gases. Within one metal-metalloid system the data are listed under topics such as solubility limit, dissociation pressure of compunds, vapour pressure of volatile oxides, thermodynamic data, diffusion, transport parameters (effective valence, heat of transport), permeation of gases through metals, gas adsorption and gas desorption kinetics, compound formation, precipitation kinetics, and property changes. Following the data on binary systems, the data of ternary systems are presented, beginning with systems which contain one metal and two gases or one gas and carbon and continuing with systems with two metals and one gas or carbon. Within a ternary system the topics are arranged in the same way as in binary systems. (HB) [de

  13. Equality in Sport for Women.

    Science.gov (United States)

    Geadelmann, Patricia L.; And Others

    The subject of equal rights and opportunities for women in the field of physical education is discussed in nine articles. The major emphasis is on the legal aspects of sex discrimination. Defining equality, knowing the laws regarding enforcement, understanding the court procedures, and realizing the avenues for change are the essential tools…

  14. Governing Equality: Mathematics for All?

    Science.gov (United States)

    Diaz, Jennifer D.

    2013-01-01

    With the notion of governmentality, this article considers how the equal sign (=) in the U.S. math curriculum organizes knowledge of equality and inscribes cultural rules for thinking, acting, and seeing in the world. Situating the discussion within contemporary math reforms aimed at teaching mathematics for all, I draw attention to how the…

  15. Luck, Choice, and Educational Equality

    Science.gov (United States)

    Calvert, John

    2015-01-01

    Harry Brighouse discusses two conceptions of educational equality. The first is a type of equality of opportunity, heavily influenced by the work of John Rawls, which he calls the meritocratic conception. According to this conception, an individual's educational prospects should not be influenced by factors such as their social class background.…

  16. Addition of ash on drained forested peatlands in southern Sweden. Effects on forest production, fluxes of greenhouse gases and water chemistry; Tillfoersel av aska i tallskog paa dikad torvmark i soedra Sverige. Effekter paa skogsproduktion, avgaang av vaexthusgaser och vattenkemi

    Energy Technology Data Exchange (ETDEWEB)

    Sikstroem, Ulf; Ernfors, Maria; Jacobson, Staffan; Klemedtsson, Leif; Nilsson, Mats; Ring, Eva

    2006-04-15

    In Sweden, about one million tones of wood ashes are produced annually, of which about 250,000 - 300,000 tones originate from forest residues. Some of the ashes produced are deposited today. One alternative use is bringing back the ashes to the forest, recycling the mineral nutrients and base compounds. In bioashes, most essential mineral nutrients for plants are included, except for N, which is gasified at combustion. On most mineral soils in Sweden, plant available nitrogen is the nutrient limiting tree growth. On organic soils, tree growth is usually increased after addition of phosphorous and potassium. Thus, there is a potential for increased forest production on peatlands after ash fertilization. This can be a profitable measure. Nutrient compensation after harvesting involve ash addition with quite low doses. This is especially important in peatlands after whole-tree harvesting in order to prevent nutrient deficiency and reduced tree growth. However, there is a need for better knowledge concerning other environmental effects before ash addition can be put into large-scale practice. The general objective of this project is to study the effects of wood-ash addition on forest production and some other environmental variables on drained, forested peatlands. The studies concern tree growth, emissions of greenhouse gases and water chemistry (ground water and run off). An important issue addressed was if an expected increased accumulation of carbon (CO{sub 2}) due to increased tree growth can compensate for an expected increased emission of greenhouse gases (e.g. CO{sub 2} and CH{sub 4}) from the peat. In addition, the very effective greenhouse gas laughing gas (N2O), must be taken into consideration. In 2003, two field experiments were established in the county of Smaaland in south Sweden, where wood ashes from biofuels were applied. One experiment was designed as a randomized block experiment where effects on forest production and greenhouse gases (CO{sub 2}, CH

  17. Addition of ash on drained forested peatlands in southern Sweden. Effects on forest production, fluxes of greenhouse gases and water chemistry; Tillfoersel av aska i tallskog paa dikad torvmark i soedra Sverige. Effekter paa skogsproduktion, avgaang av vaexthusgaser och vattenkemi

    Energy Technology Data Exchange (ETDEWEB)

    Sikstroem, Ulf; Jacobson, Staffan; Ring, Eva [Skogforsk, Uppsala (Sweden); Ernfors, Maria; Klemedtsson, Leif [Goeteborg Univ. (Sweden). Dept. of Plant and Environmental Sciences; Nilsson, Mats [Swedish Univ. of Agricultural Sciences, Umeaa (Sweden)

    2006-04-15

    In Sweden, about one million tones of wood ashes are produced annually, of which about 250,000-300,000 tones originate from biofuels, e.g. forest residues. Some of the ashes produced are deposited today. One alternative use is bringing back the ashes to the forest, recycling the mineral nutrients and base compounds. In bioashes, most essential mineral nutrients for plants are included, except for N, which is gasified at combustion. On most mineral soils in Sweden, plant available nitrogen is the nutrient limiting tree growth. On organic soils, tree growth is usually increased after addition of phosphorous and potassium. Thus, there is a potential for increased forest production on peatlands after ash fertilization. This can be a profitable measure. Nutrient compensation after harvesting involve ash addition with quite low doses. This is especially important in peatlands after whole-tree harvesting in order to prevent nutrient deficiency and reduced tree growth. However, there is a need for better knowledge concerning other environmental effects before ash addition can be put into large-scale practice. The general objective of this project is to study the effects of wood-ash addition on forest production and some other environmental variables on drained, forested peatlands. The studies concern tree growth, emissions of greenhouse gases and water chemistry (ground water and run off). An important issue addressed was if an expected increased accumulation of carbon (CO{sub 2}) due to increased tree growth can compensate for an expected increased emission of greenhouse gases (e.g. CO{sub 2} and CH{sub 4}) from the peat. In addition, the very effective greenhouse gas laughing gas (N{sub 2}O), must be taken into consideration. In 2003, two field experiments were established in the county of Smaaland in southeast Sweden, where wood ashes from biofuels were applied. One experiment was designed as a randomized block experiment (273 Anderstorp) where effects on forest

  18. Dipolar quantum gases of erbium

    International Nuclear Information System (INIS)

    Frisch, A.

    2014-01-01

    Since the preparation of the first Bose-Einstein condensate about two decades ago and the first degenerate Fermi gas following four years later a plethora of fascinating quantum phenomena have been explored. The vast majority of experiments focused on quantum degenerate atomic gases with short-range contact interaction between particles. Atomic species with large magnetic dipole moments, such as chromium, dysprosium, and erbium, offer unique possibilities to investigate phenomena arising from dipolar interaction. This kind of interaction is not only long-range but also anisotropic in character and imprints qualitatively novel features on the system. Prominent examples are the d-wave collapse of a dipolar Bose-Einstein condensate of chromium atoms realized by the group in Stuttgart, the spin magnetization and demagnetization dynamics observed by groups in Stuttgart, Paris, and Stanford, and the deformation of the Fermi surface observed by our group in Innsbruck. This thesis reports on the creation and study of the first Bose-Einstein condensate and degenerate Fermi gas of erbium atoms. Erbium belongs to the lanthanide group of elements and has a large magnetic moment of seven Bohr magneton. In particular, this thesis describes the experimental apparatus and the sequence for producing a dipolar quantum gas. There is an emphasis on the production of the narrow-line magneto-optical trap of erbium since this represents a very efficient and robust laser-cooling scheme that greatly simplifies the experimental procedure. After describing the experimental setup this thesis focuses on several fundamental questions related to the dipolar character of erbium and to its lanthanide nature. A first set of studies centers on the scattering properties of ultracold erbium atoms, including the elastic and the inelastic cross section and the spectrum of Feshbach resonances. Specifically, we observe that identical dipolar fermions do collide and rethermalize even at low temperatures

  19. Process for separating radioactive gases

    International Nuclear Information System (INIS)

    Kimura, Shigeru; Awada, Yoshihisa.

    1976-01-01

    Object: To efficiently and safely separate and recover raw gases such as krypton which requires radioactive attenuation by a long term storage. Structure: A mixture of krypton and xenon is separated by liquefaction from raw gases at a first distillation column, using latent heat of liquid nitrogen. The krypton and xenon mixture separated by liquefaction at the first distillation column is separated into krypton and xenon, by controlling operation pressure of a second distillation column at about 3 - 5 atm., using sensible heat of low temperature nitrogen gas discharged from a top of the first distillation column and a condenser. (Aizawa, K.)

  20. The ideal gases of tachyons

    International Nuclear Information System (INIS)

    Mrowczynski, St.

    1984-01-01

    The formalism of statistical mechanics of particles slower than light has been considered from the point of view of the application of this formalism for the description of tachyons. Properties of ideal gases of tachyons have been discussed in detail. After finding general formulae for quantum, Bose and Fermi gases the classical limit has been considered. It has been shown that Bose-Einstein condensation occurs. The tachyon gas of bosons violates the third principle of thermodynamics. Degenerated Fermi gas has been considered and in this case the entropy vanishes at zero temperature. Difficulties of formulating covariant statistical mechanics have been discussed

  1. A microscope for Fermi gases

    International Nuclear Information System (INIS)

    Omran, Ahmed

    2016-01-01

    This thesis reports on a novel quantum gas microscope to investigate many-body systems of fermionic atoms in optical lattices. Single-site resolved imaging of ultracold lattice gases has enabled powerful studies of bosonic quantum many-body systems. The extension of this capability to Fermi gases offers new prospects to studying complex phenomena of strongly correlated systems, for which numerical simulations are often out of reach. Using standard techniques of laser cooling, optical trapping, and evaporative cooling, ultracold Fermi gases of 6 Li are prepared and loaded into a large-scale 2D optical lattice of flexible geometry. The atomic distribution is frozen using a second, short-scaled lattice, where we perform Raman sideband cooling to induce fluorescence on each atom while maintaining its position. Together with high-resolution imaging, the fluorescence signals allow for reconstructing the initial atom distribution with single-site sensitivity and high fidelity. Magnetically driven evaporative cooling in the plane allows for producing degenerate Fermi gases with almost unity filling in the initial lattice, allowing for the first microscopic studies of ultracold gases with clear signatures of Fermi statistics. By preparing an ensemble of spin-polarised Fermi gases, we detect a flattening of the density profile towards the centre of the cloud, which is a characteristic of a band-insulating state. In one set of experiments, we demonstrate that losses of atom pairs on a single lattice site due to light-assisted collisions are circumvented. The oversampling of the second lattice allows for deterministic separation of the atom pairs into different sites. Compressing a high-density sample in a trap before loading into the lattice leads to many double occupancies of atoms populating different bands, which we can image with no evidence for pairwise losses. We therefore gain direct access to the true number statistics on each lattice site. Using this feature, we can

  2. Equal opportunities group. His mission : accelerating equal opportunities at CERN

    CERN Multimedia

    Patrice Loïez

    2000-01-01

    L. to r.: Michel Mayoud, Christine Petit-Jean-Genaz, the Equal Opportunities Officer Sudeshna Datta-Cockerill, Elena Wildner, Anne-Sylvie Cerne, Karl-Heinz Kissler, the Chairman John Ellis and Eva-Maria Groniger-Voss

  3. Equal Pay for Equal Work in Academic Obstetrics and Gynecology.

    Science.gov (United States)

    Eichelberger, Kacey Y

    2018-02-01

    The most compelling data suggest women in academic obstetrics and gynecology earn approximately $36,000 less than male colleagues per year in regression models correcting for commonly cited explanatory variables. Although residual confounding may exist, academic departments in the United States should consider rigorous examination of their own internal metrics around salary to ensure gender-neutral compensation, commonly referred to as equal pay for equal work.

  4. Dis-Equality: Exploring the Juxtaposition of Disability and Equality

    Directory of Open Access Journals (Sweden)

    Bronagh Byrne

    2018-03-01

    Full Text Available The (inequality issues facing disabled people are extensive and long-enduring. The way(s in which equality is conceptualised has important consequences for understandings of disability. The ambiguity of what I call dis-equality theory is two-fold; the apparent failure of mainstream equality theorising in, firstly, embracing disability concepts at all, and secondly, in fully incorporating the logistics of disability, particularly in relation to the social construction of such. Practices of institutional and more complex forms of discrimination are part of those deeper structures of domination and oppression which maintain disabled people in positions of disadvantage. Everyday practices, in the ‘ordinary order of things’ (Bourdieu, 2000, continue to be misrecognised as natural and taken for granted. This article critically explores the complexity of dis-equality theorising utilising a Bourdieusian lens which explicitly incorporates complex and subtle forms of discrimination, and by examining the UN Convention on the Rights of Persons with Disabilities’ approach to equality. I argue that the way forward for dis-equality theorising in today’s rights based era must be one that considers the nuances of the ‘rules of the game’ (Young, 1990 if it is to be effective in challenging the inequalities to which disabled people have long been subject.

  5. PROMOTING GENDER EQUALITY TROUGH EQUAL LIFE STANDARD IN EU COUNTRIES

    Directory of Open Access Journals (Sweden)

    Aleksandar Dashtevski

    2018-06-01

    Full Text Available After the World War II, especially in the early fifties there is an expansion of gender rights. Women are massively employed all over the world in all sectors of social life, contributing to an increase in both their own standard of living and the standard in their own countries. As the importance and role of women grows, this is achieved with increasing respect for its rights. Gender means elimination of inequality and promote equality between women and men in all areas of social life. If we want to achieve gender equality as a whole, it is inevitable to achieve an economic consolidation of the two sexes. Economic strengthening is possible trough equal pay. Experience shows that payments are not equal when it comes to wages for men and women. Therefore, the EU is constantly working to regulate this area, with special regulations, which are mandatory for the member states, but should also be respected by countries that would like to join the union. This led to the promotion of gender equality through an equal life.

  6. Certifying Equality With Limited Interaction

    DEFF Research Database (Denmark)

    Brody, Joshua Eric; Chakrabarti, Amit; McGregor, Andrew

    2012-01-01

    The \\textsc{equality} problem is usually one's first encounter with communication complexity and is one of the most fundamental problems in the field. Although its deterministic and randomized communication complexity were settled decades ago, we find several new things to say about the problem...... cost bounds, we obtain new bounded-round randomized lower bounds for the \\textsc{or-equality} problem that have a direct-sum flavor. Such lower bounds were previously known only for deterministic protocols or one-round randomized protocols. The \\textsc{or-equality} problem is in turn closely related...

  7. Transport processes in ionized gases

    International Nuclear Information System (INIS)

    Kremer, G.M.

    1997-01-01

    Based on kinetic theory of gases and on the combined of Chapman-Enskog and Grad, the laws of Ohm, Fourier and Navier-Stokes are derived for a non-relativistic fully ionized gas. Moreover, the combined method is applied to the BGK model of the relativistic Boltzmann equation and the Ohm's law is derived for a relativistic fully ionized gas. (author)

  8. Stratospheric aerosols and precursor gases

    Science.gov (United States)

    1982-01-01

    Measurements were made of the aerosol size, height and geographical distribution, their composition and optical properties, and their temporal variation with season and following large volcanic eruptions. Sulfur-bearing gases were measured in situ in the stratosphere, and studied of the chemical and physical processes which control gas-to-particle conversion were carried out in the laboratory.

  9. Permeability of cork to gases.

    Science.gov (United States)

    Faria, David P; Fonseca, Ana L; Pereira, Helen; Teodoro, Orlando M N D

    2011-04-27

    The permeability of gases through uncompressed cork was investigated. More than 100 samples were assessed from different plank qualities to provide a picture of the permeability distribution. A novel technique based on a mass spectrometer leak detector was used to directly measure the helium flow through the central area of small disks 10 mm in diameter and 2 mm thick. The permeability for nitrogen, oxygen, and other gases was measured by the pressure rise technique. Boiled and nonboiled cork samples from different sections were evaluated. An asymmetric frequency distribution ranging 3 orders of magnitude (roughly from 1 to 1000 μmol/(cm·atm·day)) for selected samples without macroscopic defects was found, having a peak below 100 μmol/(cm·atm·day). Correlation was found between density and permeability: higher density samples tend to show lower permeability. However, boiled cork showed a mean lower permeability despite having a lower density. The transport mechanism of gases through cork was also examined. Calculations suggest that gases permeate uncompressed cork mainly through small channels between cells under a molecular flow regime. The diameter of such channels was estimated to be in the range of 100 nm, in agreement with the plasmodesmata size in the cork cell walls.

  10. Comparação de substratos com diferentes quantidades de carboidratos solúveis utilizando a técnica in vitro semi-automática de produção de gases Comparison among substrates with different soluble carbohydrates concentration using the in vitro semi-automatic gas production technique

    Directory of Open Access Journals (Sweden)

    U.T. Nogueira

    2006-08-01

    Full Text Available Estudou-se a diferença entre a produção de gases (PG e a degradação da matéria seca (DMS para substratos com diferentes quantidades de carboidratos solúveis avaliados pela técnica in vitro de produção de gases. Foram utilizados cinco substratos (cana-de-açúcar, silagem de milho, capim-colonião, milho em grão e ração comercial para vacas em lactação antes e após a retirada parcial dos carboidratos solúveis (lavados. A PG foi maior e a DMS menor para o material lavado. A concentração de carboidratos solúveis influenciou os resultados obtidos pela técnica de produção de gases.The difference between the gas production (GP and the dry matter degradation (DMD of substrates with different amounts of soluble carbohydrates using the in vitro gas production technique was studied. Five substrates (sugarcane, maize silage, Panicum maximum grass, corn grain, 20% CP commercial lactating cow ration and soybean meal and the same substrates with part of its soluble carbohydrate removed (washed materials were evaluated. The GP was higher and DMD was lower for washed materials than for the original materials. The carbohydrate concentration affects the results of the gas production technique.

  11. Non-equal-time Poisson brackets

    OpenAIRE

    Nikolic, H.

    1998-01-01

    The standard definition of the Poisson brackets is generalized to the non-equal-time Poisson brackets. Their relationship to the equal-time Poisson brackets, as well as to the equal- and non-equal-time commutators, is discussed.

  12. The Nordic Gender Equality Model

    OpenAIRE

    Teigen, Mari; Skjeie, Hege

    2017-01-01

    In this chapter, we investigate the descriptive premises involved in portrayals of a Nordic model of gender equality. Mainly, we focus on the equality dimensions that form the baseline in comparative welfare state research and research on political participation. We outline these dimensions as norms for economic equity and democratic parity. First, we examine whether and how descriptive statistics that assess these two dimensions currently rank Nordic countries compared with other European co...

  13. The Paradox of Equal Opportunities

    Directory of Open Access Journals (Sweden)

    Mitja Sardoč

    2014-06-01

    Full Text Available The basic assumption of the idea of equal opportunities is based on the assertion that all individuals competing for an advantaged social position should have equal opportunities, i.e., that each and every one of them should have fair opportunities to achieve a particular goal. Despite the fact that equal opportunities is one of the basic mechanisms for a just distribution of advantageous social positions, the idea of fair equality of opportunity remains divided between different competing political projects, e.g., egalitarian liberalism, libertarian political theory, multiculturalism, etc. This paper examines two basic dimensions of equal opportunities to which existing conceptions fail to offer a unanimous answer, i.e., a the issue of fairness and b the issue of the currency of fairness. The concluding part of this paper presents two basic paradoxes that determine both the direction of the discussion as well as the possible solutions to the achievement of fair equal opportunities as part of any process for competing for advantageous social positions.

  14. Incentives, health promotion and equality.

    Science.gov (United States)

    Voigt, Kristin

    2012-07-01

    The use of incentives to encourage individuals to adopt 'healthier' behaviours is an increasingly popular instrument in health policy. Much of the literature has been critical of 'negative' incentives, often due to concerns about equality; 'positive' incentives, however, have largely been welcomed as an instrument for the improvement of population health and possibly the reduction of health inequalities. The aim of this paper is to provide a more systematic assessment of the use of incentives from the perspective of equality. The paper begins with an overview of existing and proposed incentive schemes. I then suggest that the distinction between 'positive' and 'negative' incentives - or 'carrots' and 'sticks' - is of limited use in distinguishing those incentive schemes that raise concerns of equality from those that do not. The paper assesses incentive schemes with respect to two important considerations of equality: equality of access and equality of outcomes. While our assessment of incentive schemes will, ultimately, depend on various empirical facts, the paper aims to advance the debate by identifying some of the empirical questions we need to ask. The paper concludes by considering a number of trade-offs and caveats relevant to the assessment of incentive schemes.

  15. Human activities affecting trace gases and climate

    International Nuclear Information System (INIS)

    Braatz, B.; Ebert, C.

    1990-01-01

    The Earth's climate has been in a constant state of change throughout geologic time due to natural perturbations in the global geobiosphere. However, various human activities have the potential to cause future global warming over a relatively short amount of time. These activities, which affect the Earth's climate by altering the concentrations of trace gases in the atmosphere, include energy consumption, particularly fossil-fuel consumption; industrial processes (production and use of chlorofluorocarbons, halons, and chlorocarbons, landfilling of wastes, and cement manufacture); changes in land use patterns, particularly deforestation and biomass burning; and agricultural practices (waste burning, fertilizer usage, rice production, and animal husbandry). Population growth is an important underlying factor affecting the level of growth in each activity. This paper describes how the human activities listed above contribute to atmospheric change, the current pattern of each activity, and how levels of each activity have changed since the early part of this century

  16. Soliton Gases and Generalized Hydrodynamics

    Science.gov (United States)

    Doyon, Benjamin; Yoshimura, Takato; Caux, Jean-Sébastien

    2018-01-01

    We show that the equations of generalized hydrodynamics (GHD), a hydrodynamic theory for integrable quantum systems at the Euler scale, emerge in full generality in a family of classical gases, which generalize the gas of hard rods. In this family, the particles, upon colliding, jump forward or backward by a distance that depends on their velocities, reminiscent of classical soliton scattering. This provides a "molecular dynamics" for GHD: a numerical solver which is efficient, flexible, and which applies to the presence of external force fields. GHD also describes the hydrodynamics of classical soliton gases. We identify the GHD of any quantum model with that of the gas of its solitonlike wave packets, thus providing a remarkable quantum-classical equivalence. The theory is directly applicable, for instance, to integrable quantum chains and to the Lieb-Liniger model realized in cold-atom experiments.

  17. Noble Gases in Lakes and Ground Waters

    OpenAIRE

    Kipfer, Rolf; Aeschbach-Hertig, Werner; Peeters, Frank; Stute, Marvin

    2002-01-01

    In contrast to most other fields of noble gas geochemistry that mostly regard atmospheric noble gases as 'contamination,' air-derived noble gases make up the far largest and hence most important contribution to the noble gas abundance in meteoric waters, such as lakes and ground waters. Atmospheric noble gases enter the meteoric water cycle by gas partitioning during air / water exchange with the atmosphere. In lakes and oceans noble gases are exchanged with the free atmosphere at the surface...

  18. Perceptions of gender equality and attitudes toward equal ...

    African Journals Online (AJOL)

    The aim of this study was to explain consciousness of gender inequality in school sport and predict pro-equality attitudes among 1580 respondents (934 girls and 646 boys) from 45 Botswana secondary schools. Results of separate multiple regression models indicate that girls' sport participation is negatively correlated with ...

  19. Distributive Equality, Relational Equality and Preferences about Higher Education

    Science.gov (United States)

    Voigt, Kristin

    2017-01-01

    Are scenarios in which disadvantaged students prefer not to attend (certain) universities a concern from the perspective of an egalitarian theory of justice? I consider this question from the respective perspectives of two prominent approaches to equality: distributive theories, which focus on the fairness of inequalities in outcomes, and…

  20. Centrifugal separation of mixture gases

    International Nuclear Information System (INIS)

    Zhou, M.S.; Chen, W.N.; Yin, Y.T.

    2008-01-01

    An attempt for single centrifugal separation of mixtures with different molecular formula was presented in this paper. The mixtures of SF 6 and CCl 3 F, and SF 6 and CCl 4 were chosen as the processing gases, which were prepared in three mass ratios, 0.5, 0.8 and 0.2, respectively. The separating characteristics such as the overall separation factors and the variation of cuts were studied. (author)

  1. Desulfurization of waste gases of the incinerator after petroleum refining

    International Nuclear Information System (INIS)

    Samesova, D.; Ladomersky, J.

    2001-01-01

    Desulfurization of waste gases of the incinerator after petroleum refining was developed. Mixing of wastes with lime (10% of additive of total volume of waste) was proved before introduction into incinerator. Concentrations of CO, CO 2 , O 2 , NO 2 , SO 2 and temperature of combustion products were measured by automatic analyser

  2. The Europeanisation of gender equality

    DEFF Research Database (Denmark)

    Martinsen, Dorte Sindbjerg

    2007-01-01

    The paper examines the extent to which member states control the impact of European Union (EU) policies. It does so through an historical study of what is considered to be the ‘least likely case’ – the Europeanization of Danish gender equality. The analytical findings identify various and diverse...... effects of European integration over time on national policy, politics and law. Historically, the EU has had a major role in furthering and putting into effect equality rights – even in the ‘least likely’ case of Denmark. From a theoretical perspective, the paper argues that the study of Europeanization...

  3. Women, gender equality, and diabetes.

    Science.gov (United States)

    Hannan, Carolyn

    2009-03-01

    Discussion of women, gender equality, and diabetes should be placed in the context of United Nations mandates on women's health which highlight the need for equal access to information, prevention activities, services, and care across the life cycle. Gender differences and inequalities have been identified in relation to causes and consequences of diabetes and access to services and support between women and men, and among different groups of women. Appropriate gender-sensitive policy responses, including research and data collection, need to be developed. The recent United Nations resolution on diabetes provides an opportunity to strengthen the focus on women and diabetes.

  4. GAZVIL - Gases and gas mixtures for welding in protective medium

    International Nuclear Information System (INIS)

    Avram, I.; Constantin, N.; Cristescu, I.; Stefan, L.; Zamfirache, M.

    1996-01-01

    Gases and gas mixtures are used in machine building industry as protective environment in the welding by the procedures: MIG, MAG, TIG, plasma and micro-plasma. Also they are used in jet plasma production as well as controlled environment in materials heat treatments, passivation or protective procedures of equipment of chemical and petrochemical industries. Gases and gas mixtures are obtained in particular quality conditions while their purity is certified by specific methods making use of performing technology in laboratories to be qualified in the frame of the RELAR system

  5. STEM Equality and Diversity Toolkit

    Science.gov (United States)

    Collins, Jill

    2011-01-01

    In 2008, the Centre for Science Education at Sheffield Hallam University teamed up with VT Enterprise (now Babcock International) in their submission of a successful bid to deliver the national STEM (Science, Technology, Engineering and Maths) Subject Choice and Careers Project. An integral part of the bid was the promotion of equality and…

  6. Equal Potential: A Collective Fraud.

    Science.gov (United States)

    Gottfredson, Linda S.

    2000-01-01

    Critiques the College Board's report, "Reaching the Top," asserting that it illustrates collective fraud in the social sciences, which sustains an egalitarian fiction that intelligence is clustered equally across all human populations. Suggests that while the report omits certain popular falsehoods, it also omits crucial truths about…

  7. Equalizing Teachers' Pay in Louisiana

    Science.gov (United States)

    Cassimere, Raphael Jr.

    1977-01-01

    Suggests that the struggle for teacher salary equalization in Louisiana ended in success, but it was one chapter in a long struggle to gain the full citizenship that black teachers and their pupils dreamed would one day be theirs. (Author/AM)

  8. Equalization equations in reactant resolution

    Indian Academy of Sciences (India)

    Unknown

    given partitioning of the system in physical or functional space. The most frequently ... Then, the inter-reactant equilibrium is considered. The ... Global equilibrium. Even though the chemical potential in the case of global equilibrium is equalized by definition (see (1)), we repeat here the proof, for the current needs, using.

  9. A QUANTITATIVE STUDY OF THE EVOLUTION OF GASES FROM ELECTRON TUBES AND MATERIALS.

    Science.gov (United States)

    A continuous quantitative and qualitative gas analysis system has been designed, built and calibrated. The system incorporates an omegatron mass...processing and materials parameters as they affect the kinds and quantities of gases evolved by electron tubes. CO2, CO, and H2 in roughly equal

  10. Energy prices, equalization and federalism

    Energy Technology Data Exchange (ETDEWEB)

    Courchene, T.J. [Queen' s Univ., Kingston, ON (Canada). School of Policy Studies

    2005-10-01

    A rise in oil prices over the last 30 years has shaped the debate on the equalization formula as well as the nature of fiscal federalism. The oil shocks of 1973 and 1979 contributed to the creation of the National Energy Program (NEP) in 1980 and the Energy Pricing and Taxation Agreement (EPTA) between Ottawa and Alberta in 1981. The current surge in oil prices, to recent highs of $70 a barrel has resulted in a new debate on energy pricing, equalization and fiscal frameworks. This article presented a review of the history of oil and federalism, and proposed a remedy to the horizontal fiscal imbalance by allocating the fixed equalization pool in accordance with fiscal capacity disparities relating to non-resource revenues. An interprovincial revenue-sharing pool was suggested for resource revenues, agreed to and operated by the provinces. It was suggested that after the price spike in 1973 in which the price of oil tripled, a key part of the rationale for imposing export taxes on oil equal to the difference between domestic and world prices was that the federal government could subsidize oil imports into eastern Canada and maintain a uniform domestic price across the country. By continuing to subsidize imports and maintaining a domestic price below the world price, the government has been diverting potential energy revenues from energy-rich provinces and transferring them directly to Canadians in terms of subsidized energy prices. It was noted that energy price surges cannot send equalization payments soaring as they did before because of the 2004 Framework Agreement, in which the overall equalization will be increased to $10.9 billion. A 2-tier approach to equalization was presented, in which it was suggested that the $10.9 billion pool should be allocated with fiscal capacity disparities relating to non-resource revenues. The creation of a revenue sharing pool for resource revenues was recommended. It was suggested that the 2 approaches will result in a strategic

  11. Energy prices, equalization and federalism

    International Nuclear Information System (INIS)

    Courchene, T.J.

    2005-01-01

    A rise in oil prices over the last 30 years has shaped the debate on the equalization formula as well as the nature of fiscal federalism. The oil shocks of 1973 and 1979 contributed to the creation of the National Energy Program (NEP) in 1980 and the Energy Pricing and Taxation Agreement (EPTA) between Ottawa and Alberta in 1981. The current surge in oil prices, to recent highs of $70 a barrel has resulted in a new debate on energy pricing, equalization and fiscal frameworks. This article presented a review of the history of oil and federalism, and proposed a remedy to the horizontal fiscal imbalance by allocating the fixed equalization pool in accordance with fiscal capacity disparities relating to non-resource revenues. An interprovincial revenue-sharing pool was suggested for resource revenues, agreed to and operated by the provinces. It was suggested that after the price spike in 1973 in which the price of oil tripled, a key part of the rationale for imposing export taxes on oil equal to the difference between domestic and world prices was that the federal government could subsidize oil imports into eastern Canada and maintain a uniform domestic price across the country. By continuing to subsidize imports and maintaining a domestic price below the world price, the government has been diverting potential energy revenues from energy-rich provinces and transferring them directly to Canadians in terms of subsidized energy prices. It was noted that energy price surges cannot send equalization payments soaring as they did before because of the 2004 Framework Agreement, in which the overall equalization will be increased to $10.9 billion. A 2-tier approach to equalization was presented, in which it was suggested that the $10.9 billion pool should be allocated with fiscal capacity disparities relating to non-resource revenues. The creation of a revenue sharing pool for resource revenues was recommended. It was suggested that the 2 approaches will result in a strategic

  12. Radiolytic and thermal generation of gases from Hanford grout samples

    Energy Technology Data Exchange (ETDEWEB)

    Meisel, D.; Jonah, C.D.; Kapoor, S.; Matheson, M.S.; Mulac, W.A.

    1993-10-01

    Gamma irradiation of WHC-supplied samples of grouted Tank 102-AP simulated nonradioactive waste has been carried out at three dose rates, 0.25, 0.63, and 130 krad/hr. The low dose rate corresponds to that in the actual grout vaults; with the high dose rate, doses equivalent to more than 40 years in the grout vault were achieved. An average G(H{sub 2}) = 0.047 molecules/100 eV was found, independent of dose rate. The rate of H2 production decreases above 80 Mrad. For other gases, G(N{sub 2}) = 0.12, G(O{sub 2}) = 0.026, G(N{sub 2}O) = 0.011 and G(CO) = 0.0042 at 130 krad/hr were determined. At lower dose rates, N{sub 2} and O{sub 2} could not be measured because of interference by trapped air. The value of G(H{sub 2}) is higher than expected, suggesting segregation of water from nitrate and nitrite salts in the grout. The total pressure generated by the radiolysis at 130 krad/h has been independently measured, and total amounts of gases generated were calculated from this measurement. Good agreement between this measurement and the sum of all the gases that were independently determined was obtained. Therefore, the individual gas measurements account for most of the major components that are generated by the radiolysis. At 90 {degree}C, H{sub 2}, N{sub 2}, and N{sub 2}O were generated at a rate that could be described by exponential formation of each of the gases. Gases measured at the lower temperatures were probably residual trapped gases. An as yet unknown product interfered with oxygen determinations at temperatures above ambient. The thermal results do not affect the radiolytic findings.

  13. Reactions on carbonaceous materials with hydrogenating gases

    Energy Technology Data Exchange (ETDEWEB)

    Pier, M; Simon, W; Kronig, W

    1933-02-08

    A process is given for the production of valuable hydrocarbons by treatment of distillable carbonaceous materials with added hydrogenating gases under pressure in contact with catalysts. The process comprises adding to the initial materials before or during the said treatment organic sulphonic acids together with metals of groups 4 to 8 of the periodic system or compounds thereof, or free organic carboxylic acids which when inorganic salts are simultaneously present do not combine therewith to form complex ansolvo acids, or acid salts of strong acids or acid salts of heavy metals, lithium, magnesium, and aluminum, with the exception of aluminum hydrosilicates, or inorganic oxygen containing acids of sulfur or nitrogen or the anhydrides of said inorganic oxygen-containing acids.

  14. Electron beam processing of combustion flue gases

    International Nuclear Information System (INIS)

    1987-07-01

    This report contains the papers presented at the consultants' meeting on electron beam processing of combustion flue gases. The meeting provided an excellent opportunity for exchanging information and reviewing the current status of technology development. Characteristics of the electron beam processing recognized by the meeting are: capability of simultaneous removals of SO 2 and NO x , safe technology and simplicity of control, dry process without waste water to be treated, cost benefit of electron beam processing compared with conventional technology and the conversion of SO 2 and NO x to a by-product that can be used as agricultural fertilizer. A separate abstract was prepared for each of the 22 papers in this technical report

  15. Report of Committee H. Liquefied gases

    International Nuclear Information System (INIS)

    Miyata, Yoshiaki

    1997-01-01

    Committee H covers liquefied gases, both liquefied natural gas (LNG) and liquefied petroleum gas (LPG). In this triennium (1994-1997), Subcommittee H-1 and H-2 carried out a general survey of LNG and LPG respectively including supply and demand, world LNG trade, LPG production facilities, LNG liquefaction plants, LNG schemes existing or under construction and future projects. Additionally five working groups were set up to cover the following work items selected from among major topics that the liquefied gas industries are facing or concerned with. The topics for LNG are ''Operational aspects of liquefaction plants'', ''Cost reduction of LNG chains'', ''Evolution of major cryogenic equipment'' and those for LPG are ''New developments in future LPG utilization'' and ''LPG: An optimal fuel for developing countries''. It should be noted that, in addition to traditional surveys, Committee H also tried making a cost analysis of LNG chains for the first time, in ''Cost reduction of LNG chains''. (au)

  16. Method of extracting shale with hot gases

    Energy Technology Data Exchange (ETDEWEB)

    Hervier, M

    1874-12-05

    The raw rock is treated in a furnace composed of a series of compartments arranged in a circle around a hearth and communicating with one another by means of a chimney. The chargers receiving the rock communicate at the top directly with little cells in which terminate the chimneys for the circulation. These chambers are accessible to the combustion gases from the central hearth by means of flues. A damper, operated from outside, closes the chimney or flue at will. A grill is installed at the lower part of each chamber and supports the bituminous rocks to be treated, the rock being charged in at the top of the chamber. Each chamber is set on a reservoir of cast iron, the reservoir being slightly inclined toward the outside and receiving the liquid products separated from the rock.

  17. Mechanics of liquids and gases

    CERN Document Server

    Loitsyanskii, L G; Jones, W P

    1966-01-01

    Mechanics of Liquids and Gases, Second Edition is a 10-chapter text that covers significant revisions concerning the dynamics of an ideal gas, a viscous liquid and a viscous gas.After an expanded introduction to the fundamental properties and methods of the mechanics of fluids, this edition goes on dealing with the kinetics and general questions of dynamics. The next chapters describe the one-dimensional pipe flow of a gas with friction, the elementary theory of the shock tube; Riemann's theory of the wave propagation of finite intensity, and the theory of plane subsonic and supersonic flows.

  18. 48 CFR 1910.004-73 - Offer evaluation and award, brand name or equal descriptions.

    Science.gov (United States)

    2010-10-01

    ..., brand name or equal descriptions. 1910.004-73 Section 1910.004-73 Federal Acquisition Regulations System... 1910.004-73 Offer evaluation and award, brand name or equal descriptions. An offer may not be rejected for failure of the offered product to equal a characteristic of a brand name product if it was not...

  19. COLOUR IMAGE ENHANCEMENT BASED ON HISTOGRAM EQUALIZATION

    OpenAIRE

    Kanika Kapoor and Shaveta Arora

    2015-01-01

    Histogram equalization is a nonlinear technique for adjusting the contrast of an image using its histogram. It increases the brightness of a gray scale image which is different from the mean brightness of the original image. There are various types of Histogram equalization techniques like Histogram Equalization, Contrast Limited Adaptive Histogram Equalization, Brightness Preserving Bi Histogram Equalization, Dualistic Sub Image Histogram Equalization, Minimum Mean Brightness Error Bi Histog...

  20. Nearly equal β* at CESR

    International Nuclear Information System (INIS)

    Bagley, P.; Billing, M.; Krishnagopal, S.; Rubin, D.; Siemann, R.; Welch, J.

    1991-01-01

    Simulations suggest that in e + e - storage rings collisions of round beams (equal emittances and equal β * ) can produce tune shifts of 0.1 and very large luminosities. Further simulations show the same large vertical tune shifts even with very different horizontal and vertical emittances. Using a special CESR lattice with β h * = 32 cm, β v * = 20 cm, and zero horizontal and vertical dispersion at the interaction point, the author authors collided beams with horizontal emittance of 136 nm · rad and vertical emittance of about 9 nm · rad and vertical emittance of about 9 nm · rad. There were experimental complications involving the damping partition numbers, a near miss at a parasitic crossing point, and small orbit offsets at the main collision point. They have done a detailed analysis of these complications and discuss their effects on the observed saturated tune shift of 0.045 ± 0.010

  1. Testing of compact electrostatic precipitator for removal of hygroscopic ammonium salts from flue gases

    International Nuclear Information System (INIS)

    Iller, E.; Chmielewska, D.K.; Koczy, B.; Rygula, Cz.

    2002-01-01

    Among many new technologies for purification of flue gases the process using electron beam for simultaneous removal of SO 2 and NO x is developing successfully and is entering to industrial applications. The product being the mixture of ammonium sulfate and nitrate is formed during the process of pollution reduction. Solid particles of this product are hydroscopic aerosol with submicron size. Results of investigation of ammonium aerosol salts removal by electrostatic precipitator of special construction co-operating with irradiation purification of the flue gas installation placed in EC 'Kaweczyn' area have been presented in the report. Influence of different parameters on the efficiency is discussed as well. Maximum removal efficiency was equal to 99.7%. Particulate emission and aerosol particle sizes distribution in the electrostatic precipitator inlet and outlet were measured using universal cascade impactor Andersen Mark III. Chemical composition of the soluble part of the by-product collected in electrostatic precipitator was examined with ion chromatography. The insoluble part and water content of the samples was measured as well. (author)

  2. Discrimination and Equality of Opportunity

    OpenAIRE

    J. Ignacio García-Pérez; Antonio Villar

    2009-01-01

    This paper presents a measure of social discrimination based on the principle of equality of opportunity. According to this principle we only have to care about the inequality derived from people’s differential circumstances (and not about outcome differences due to people’s diverse degree of effort). We propose approaching the measurement of group discrimination as the “welfare loss” attributed to the inequality between social groups of similar characteristics. We also provide an empirical a...

  3. Office of Equal Opportunity Programs

    Science.gov (United States)

    Chin, Jennifer L.

    2004-01-01

    The NASA Glenn Office of Equal Opportunity Programs works to provide quality service for all programs and/or to assist the Center in becoming a model workplace. During the summer of 2004, I worked with Deborah Cotleur along with other staff members to create and modify customer satisfaction surveys. This office aims to assist in developing a model workplace by providing functions as a change agent to the center by serving as an advisor to management to ensure equity throughout the Center. In addition, the office serves as a mediator for the Center in addressing issues and concerns. Lastly, the office provides assistance to employees to enable attainment of personal and organizational goals. The Office of Equal Opportunities is a staff office which reports and provides advice to the Center Director and Executive Leadership, implements laws, regulations, and presidential executive orders, and provides center wide leadership and assistance to NASA GRC employees. Some of the major responsibilities of the office include working with the discrimination complaints program, special emphasis programs (advisory groups), management support, monitoring and evaluation, contract compliance, and community outreach. During my internship in this office, my main objective was to create four customer satisfaction surveys based on EO retreats, EO observances, EO advisory boards, and EO mediation/counseling. I created these surveys after conducting research on past events and surveys as well as similar survey research created and conducted by other NASA centers, program for EO Advisory group members, leadership training sessions for supervisors, preventing sexual harassment training sessions, and observance events. I also conducted research on the style and format from feedback surveys from the Marshall Equal Opportunity website, the Goddard website, and the main NASA website. Using the material from the Office of Equal Opportunity Programs at Glenn Research Center along with my

  4. Equal is as equal does: challenging Vatican views on women.

    Science.gov (United States)

    1995-01-01

    The authors of this piece are women from the Roman Catholic tradition who are critical of the Vatican position on women's rights. The Report of the Holy See in Preparation for the Fourth World Conference on Women reveals a religious fundamentalism that misuses tradition and anthropology to limit women's roles and rights. The Vatican is itself a self-proclaimed state that offers women neither opportunities nor protections within its own organization, and there is no evidence of women's participation in the preparation of its report. The Vatican document constructs a vision of women and men in which men are normative persons, whose dignity is conferred by their humanity, and women are the variant other, defined by and granted dignity by their reproductive and mothering functions. The Vatican document is anti-feminist. It criticizes the "radical feminists" of the 1960s for trying to deny sexual differences, and accuses today's Western feminists of ignoring the needs of women in developing countries while pursuing selfish and hedonistic goals. It makes no recognition of the work of feminists to improve the lives of women worldwide. The Vatican document claims to support women's equality, but it qualifies each statement of equality with a presumption of difference. The document defines women as vulnerable without naming men as responsible for the oppression and violence to which women are vulnerable. It ridicules as feminist cant the well-documented fact that the home is the setting of most violence against women. The Vatican decries the suffering families undergo as a result of cumpulsory birth control and abortion policies, while it would deny families sex education, contraceptives, and safe abortion, thereby making pregnancy cumpulsory. A new vision of social justice is needed, one that: 1) rests on a radical equality, in which both women and men are expected to contribute to work, education, culture, morality, and reproduction; 2) accepts a "discipleship of equals

  5. Equal pay for work of equal value in terms of the Employment Equity ...

    African Journals Online (AJOL)

    Lastly, this article seeks to ascertain whether the EEA (including the Employment Equity Regulations) provides an adequate legal framework for determining an equal pay for work of equal value claim. Keywords: Equal pay; Employment Equity Act; Equality Act; International Labour Organisation; Equal Pay Guide; Equal ...

  6. Optical Lattice Gases of Interacting Fermions

    Science.gov (United States)

    2015-12-02

    interacting Fermi gases has topological properties similar to the conventional chiral p- wave state. These include a non-zero Chern number and the...interacting cold gases with broad impacts on the interfaces with condensed matter and particle physics . Applications and experiments of some of the physics ...AFRL-AFOSR-VA-TR-2016-0016 Optical Lattice Gases of Interacting Fermions Wensheng Vincent Liu UNIVERSITY OF PITTSBURGH Final Report 12/02/2015

  7. Gender equality in primary immunisation

    Directory of Open Access Journals (Sweden)

    Deepak S Khismatrao

    2015-01-01

    Full Text Available Context: Immunization, a well-known and effective method of preventing childhood illnesses is basic service under primary health care. Most surveys in India measure primary immunization coverage and quality, but no "Gender Equality." Aims: Assess "Gender Equality" in primary immunization with reference to coverage, quality, and place of immunization. Settings and Design: Cross-sectional survey in a primary health center, Pune, Maharashtra using World Health Organization 30-cluster sampling method with 14 beneficiaries (7 girls and 7 boys to be selected from each cluster. Instead of 420 children, data collected for 345 children, as requisite numbers of children were not available in low population villages and also children whose mothers were not present during survey were excluded. Materials and Methods: Vaccination data collected from either records and/or history by mother. Children born on or between 13-09-2009 and 13-09-2010, were included. Statistical Analysis Used: SPSS 14.01 version with Chi-square as test of significance. Results: Of the study population, 171 (49.6% were females and 174 (50.4% males. A total of 64.1% children had immunization records with female proportion 69.0% and males 59.2%. Primary immunization coverage was 80.0%, with female proportion 82.5% and males 77.6%. One male child was completely unimmunized and remaining partially immunized, with unaware of schedule and illness of child being major reasons for partial immunization. There was no gender wise statistically significant difference observed in Primary Immunization with reference to coverage, quality, and place of immunization. Conclusions: Immunization coverage is nearing 85% benchmark with major contribution from Universal Immunization Program. Gender Equality observed in primary immunization. Preservation of immunization records by community and timely vaccinations are areas for improvement.

  8. Midwives, gender equality and feminism.

    Science.gov (United States)

    Walsh, Denis

    2016-03-01

    Gender inequality and the harmful effects of patriarchy are sustaining the wide spread oppression of women across the world and this is also having an impact on maternity services with unacceptable rates of maternal mortality, the continued under investment in the midwifery profession and the limiting of women's place of birth options. However alongside these effects, the current zeitgeist is affirming an alignment of feminism and gender equality such that both have a high profile in public discourse. This presents a once in a generation opportunity for midwives to self-declare as feminists and commit to righting the wrongs of this most pernicious form of discrimination.

  9. Educational Equality: Luck Egalitarian, Pluralist and Complex

    Science.gov (United States)

    Calvert, John

    2014-01-01

    The basic principle of educational equality is that each child should receive an equally good education. This sounds appealing, but is rather vague and needs substantial working out. Also, educational equality faces all the objections to equality per se, plus others specific to its subject matter. Together these have eroded confidence in the…

  10. Noble gases in nuclear medicine

    International Nuclear Information System (INIS)

    Calderon, M.; Burdine, J.A.

    1973-01-01

    Radioactive noble gases have made a significant contribution to diagnostic nuclear medicine. In the area of regional assessment of pulmonary function, 133 Xe has had its greatest clinical impact. Following a breath of 133 Xe gas, pulmonary ventilation can be measured using a scintillation camera or other appropriate radiation detector. If 133 Xe dissolved in saline is injected intravenously, both pulmonary capillary perfusion and ventilation can be measured since 90 percent of the highly insoluble xenon escapes into the alveoli during the first passage through the lungs. Radionuclide pulmonary function tests provide the first qualitative means of assessing lung ventilation and blood flow on a regional basis, and have recently been extended to include quantification of various parameters of lung function by means of a small computer interfaced to the scintillation camera. 133 Xe is also used in the measurement of organ blood flow following injection into a vessel leading into an organ such as the brain, heart kidneys, or muscles

  11. Gender equality and women empowerment.

    Science.gov (United States)

    Dargan, R

    1996-01-01

    This article lists 11 suggestions for empowering women that the government of India should take, if it has a sincere commitment to gender equality and women's empowerment grounded in social change and not just rhetoric: 1) education should be made compulsory for all female children and places held on a 50/50 basis in all technical institutions; 2) a uniform civil code should be adopted for all citizens regardless of cast, creed, and religion; 3) women should have an equal right to own property and receive inheritance; 4) the National Women's Commission should be enlarged, representative of diversity, and effective in making policy decisions related to welfare, education, recruitment, and promotion; 5) a State Women's Commission should be established with affiliates at the block, district, and division levels; 6) the National and State Women's Commission should be established as a Statutory Body with binding decisions mandating government action; 7) the National and State Women's Commissions should have transparent functions, be regulatory, and offer workshops and seminars for women; 8) state governments should not interfere in the functions of National and State Women's Commissions; 9) women should fill 50% of all Center and State government service posts and concessions should be made on minimum academic qualifications and completed years of service, until all positions are filled; 10) 50% of the seats of Parliament should be reserved for women in both the State Legislature, Council of Ministry Boards, Corporations, Committees, and Commissions; and 11) the Constitution should provide for women judges in courts of law.

  12. Gender Equality in Agricultural Education

    Directory of Open Access Journals (Sweden)

    N. Jayakumar

    2016-05-01

    “Increased women’s enrollment in agricultural courses” as one among the strategies when addressing gender issues in the education and training components of agricultural development projects. In this context the study was carried out to ascertain the representation of women and their academic achievement in agricultural education. The study revealed that almost equal representation was found for women in agricultural course and they were also provided better quality education in their schooling, in the form of English medium education and education in private schools. Recent trends for the past four years showed a higher percentage of enrollments of women in agricultural course than men. The growth rate was also higher for the female students. Women also showed a significantly higher percentage of academic achievement than men. These positive indicators provide sufficient signals for equality of women in agricultural course and have positive implications for development of the agricultural sector in future.

  13. Impact Delivery of Reduced Greenhouse Gases on Early Mars

    Science.gov (United States)

    Haberle, R. M.; Zahnle, K. J.; Barlow, N. G.

    2017-12-01

    Reducing greenhouse gases are the latest trend in finding solutions to the early Mars climate dilemma. In thick CO2 atmospheres with modest concentrations of H2 and/or CH4, collision induced absorptions can reduce the outgoing long wave radiation enough to provide a significant greenhouse effect. To raise surface temperatures significantly by this process, surface pressures must be at least 500 mb and H2 and/or CH4 concentrations must be at or above the several percent level. Volcanism, serpentinization, and impacts are possible sources for reduced gases. Here we investigate the delivery of such gases by impact degassing from comets and asteroids. We use a time-marching stochastic impactor model that reproduces the observed crater size frequency distribution of Noachian surfaces. Following each impact, reduced gases are added to the atmosphere from a production function based on gas equilibrium calculations for several classes of meteorites and comets at typical post-impact temperatures. Escape and photochemistry then remove the reduced greenhouse gases continuously in time throughout each simulation. We then conduct an ensemble of simulations with this simple model varying the surface pressure, impact history, reduced gas production and escape functions, and mix of impactor types, to determine if this could be a potentially important part of the early Mars story. Our goal is to determine the duration of impact events that elevate reduced gas concentrations to significant levels and the total time of such events throughout the Noachian. Our initial simulations indicate that large impactors can raise H2 concentrations above the 10% level - a level high enough for a very strong greenhouse effect in a 1 bar CO2 atmosphere - for millions of years, and that the total time spent at or above that level can be in the 10's of millions of years range. These are interesting results that we plan to explore more thoroughly for the meeting.

  14. Reduction of Climate Gases by Energy Efficiency

    International Nuclear Information System (INIS)

    Moe, N.

    1998-01-01

    Carbon dioxide cannot be depolluted in practice. However, there are two areas where measures can be taken to avoid CO 2 emissions: 1. Energy-efficiency. 2. Use of sustainable energy sources in energy production. It is characteristic that many measures which are good for the environment are also good from the point of view of cost efficiency, preparedness and employment. This is tru, for instance, of the greater use of biofuels instead of fossil fuels, collective heating systems as opposed to individual ones and economy measures - especially more efficient use of electricity. It is a question of thinking of the system as a whole. Methane is another factor which contributes to the greenhouse effect. Methane emissions can also be avoided, or reduced, by system-thinking. System-thinking is, for instance, not ro deposit combustible waste but to use it as an energy source. And why not produce electricity by using methane from existing landfill sites. Electrical energy is the most useful form of energy. Therefore, electricity should not, as a principal rule, be used for heating, or as process energy. The fact that energy-efficiency and emission of greenhouse gases are interrelated is shown in the following two examples. 1. Only about 25% of the energy content in extracted coal will reach the consumers as electricity when the production takes place in an ordinary, coal-fires condensing power station. 2. When district heating (room-heating and hot water) is produced in a modern heat-production plant by flue-gas condensation, about 90% of the energy is utilised for heating purposes. To obtain an overall picture of the amount of energy used for a purpose, e.g. heating or electricity, you must view the entire process from extraction to final use. Such a picture can show the energy efficiency and what losses arise. Efficiency measures can reduce the energy bill. They can also reduce pollution, greenhouse gases among other things. Examples will be given in this paper of energy

  15. Energies and damping rates of elementary excitations in spin-1 Bose-Einstein-condensed gases

    International Nuclear Information System (INIS)

    Szirmai, Gergely; Szepfalusy, Peter; Kis-Szabo, Krisztian

    2003-01-01

    The finite temperature Green's function technique is used to calculate the energies and damping rates of the elementary excitations of homogeneous, dilute, spin-1 Bose gases below the Bose-Einstein condensation temperature in both the density and spin channels. For this purpose a self-consistent dynamical Hartree-Fock model is formulated, which takes into account the direct and exchange processes on equal footing by summing up certain classes of Feynman diagrams. The model is shown to satisfy the Goldstone theorem and to exhibit the hybridization of one-particle and collective excitations correctly. The results are applied to gases of 23 Na and 87 Rb atoms

  16. Origin and Evolution of Reactive and Noble Gases Dissolved in Matrix Pore Water

    Energy Technology Data Exchange (ETDEWEB)

    Eichinger, F. [Hydroisotop GmbH, Schweitenkirchen (Germany); Rock-Water Interaction, Institute of Geological Sciences, University of Bern, Bern (Switzerland); Waber, H. N. [Rock-Water Interaction, Institute of Geological Sciences, University of Bern, Bern (Switzerland); Smellie, J. A.T. [Conterra AB, Stockholm (Sweden)

    2013-07-15

    Reactive and noble gases dissolved in matrix pore water of low permeable crystalline bedrock were successfully extracted and characterized for the first time based on drillcore samples from the Olkiluoto investigation site (SW Finland). Interaction between matrix pore water and fracture groundwater occurs predominately by diffusion. Changes in the chemical and isotopic composition of gases dissolved in fracture groundwater are transmitted and preserved in the pore water. Absolute concentrations, their ratios and the stable carbon isotope signature of hydrocarbon gases dissolved in pore water give valuable indications about the evolution of these gases in the nearby flowing fracture groundwaters. Inert noble gases dissolved in matrix pore water and their isotopes combined with their in situ production and accumulation rates deliver information about the residence time of pore water. (author)

  17. Unconventional gases: a North-American energy revolution not without consequences for Europe

    International Nuclear Information System (INIS)

    2011-01-01

    This paper gives a definition of the different existing unconventional gases (coal-bed methane, tight gases, shale gases), and outlines that, although these gases as well as the techniques to extract them have been well known for a long time, it is the combination of two of these techniques (hydraulic fracturing or fracking, and horizontal drilling) which enables the current technological development and the exploitation of these gases. It also outlines that the current situation in terms of natural resources favours such a development. It evokes projects in the United States, China, India, Europe, and more particularly in France, stressing that environmental issues and population density in Europe are obstacles to perform these drillings. The author questions the production cost issue and explains how these developments, notably in the USA, may change completely the world energetic landscape, and therefore entail a review of the European energy agenda. He explores the possible consequences of a durable decrease of gas prices

  18. Rare gases adsorption and separation on silver doped adsorbent

    International Nuclear Information System (INIS)

    Deliere, Ludovic

    2015-01-01

    The Comprehensive Nuclear-Test-Ban Treaty (CTBT) implements means for detecting nuclear tests in an International Monitoring System (IMS). The Commissariat a l'Energie Atomique et aux Energies Alternatives (CEA) has developed in the mid-90's, the SPALAX system (Systeme de Prelevement d'Air en Ligne avec l'Analyse des radioXenons). Xenon analysis, including radioactive isotopes from the fission reaction during the explosion, requires the development of highly efficient process for xenon concentration. In this work, the adsorption and diffusion phenomena of noble gases are studied in silver exchanged ZSM-5 zeolite. The 'experience/Monte Carlo simulation' coupling is used to determine the essential thermodynamic data on the adsorption of noble gases and to characterize the adsorption sites. The presence of a strong adsorption site, identified as silver nanoparticles and intervening at low concentration of noble gases (including xenon and radon) in some silver exchanged zeolites, achieves adsorption and selectivity performance to date unrivaled. These results allow considering their use in many critical applications in the field of capture and separation of rare gases: rare gas industrial production, reprocessing of spent fuel from gas, radon in air pollution control. (author) [fr

  19. Treating distillable carbonaceous materials with hydrocarbon gases, etc

    Energy Technology Data Exchange (ETDEWEB)

    1935-12-04

    A process is described for the treatment of distillable carbonaceous materials with hydrogen gases in the presence of hydrogen halides to recover valuable hydrocarbon products, characterized by the stable halide forming the treating medium for the hot-test gasesous product of this treatment with hydrogen gases in combination with an alkaline metal or alkaline earth, able to be decomposed by an inorganic acid soluble in water, capable of driving off hydrogen halide from their salts and also with salts of ammonia of the mentioned inorganic acids, the halide being converted into halide of ammonia and halogen, and the ammonia halide or hydrogen halide being returned to the process alone or together with the feed of carbonaceous materials with which it began.

  20. Comparison of natural gases accumulated in Oligocene strata with hydrous pyrolysis gases from Menilite Shales of the Polish Outer Carpathians

    Science.gov (United States)

    Kotarba, M.J.; Curtis, John B.; Lewan, M.D.

    2009-01-01

    This study examined the molecular and isotopic compositions of gases generated from different kerogen types (i.e., Types I/II, II, IIS and III) in Menilite Shales by sequential hydrous pyrolysis experiments. The experiments were designed to simulate gas generation from source rocks at pre-oil-cracking thermal maturities. Initially, rock samples were heated in the presence of liquid water at 330 ??C for 72 h to simulate early gas generation dominated by the overall reaction of kerogen decomposition to bitumen. Generated gas and oil were quantitatively collected at the completion of the experiments and the reactor with its rock and water was resealed and heated at 355 ??C for 72 h. This condition simulates late petroleum generation in which the dominant overall reaction is bitumen decomposition to oil. This final heating equates to a cumulative thermal maturity of 1.6% Rr, which represents pre-oil-cracking conditions. In addition to the generated gases from these two experiments being characterized individually, they are also summed to characterize a cumulative gas product. These results are compared with natural gases produced from sandstone reservoirs within or directly overlying the Menilite Shales. The experimentally generated gases show no molecular compositions that are distinct for the different kerogen types, but on a total organic carbon (TOC) basis, oil prone kerogens (i.e., Types I/II, II and IIS) generate more hydrocarbon gas than gas prone Type III kerogen. Although the proportionality of methane to ethane in the experimental gases is lower than that observed in the natural gases, the proportionality of ethane to propane and i-butane to n-butane are similar to those observed for the natural gases. ??13C values of the experimentally generated methane, ethane and propane show distinctions among the kerogen types. This distinction is related to the ??13C of the original kerogen, with 13C enriched kerogen generating more 13C enriched hydrocarbon gases than

  1. Greenhouse effect gases (GEI) by energy consumption; Gases efecto invernadero (GEI) por consumo de energia

    Energy Technology Data Exchange (ETDEWEB)

    Munoz Ledo C, Ramon; Bazan N, Gerardo [Instituto de Investigaciones Electricas, Cuernavaca, Morelos (Mexico)

    2003-07-01

    The purpose of this article is to present the calculation methodology of greenhouse effect gases (GEI) emissions that are produced by the power sector in Mexico, as well as to discuss its possible impact in the subject of climatic change and the possible mitigating actions to lower the amount of emissions that can be taken and, therefore, the possible climate changes. In Mexico GEI inventories have been made since 1991, year in which the National Inventory of Gases with Greenhouse Effect was obtained for year 1988. The GEI include carbon dioxide (CO2), carbon monoxide (CO), nitrogen oxides (NOx), methane (CH4), nitrous oxide (NO) and volatile organic carbides that are not methane (NMVOC) and are secondary products and harmful that are obtained from the processes that turn fuels into energy (combustion). The main sources of GEI are: fixed sources (industries, residences, commerce, public services and energy transformation, such as power generation); movable sources (that include all type of transport that uses fuel). The fuels that, by their volume and efficiency, generate more emissions of GEI are crude oil, natural gas and solid biomass (firewood-cane bagasse). Any effort to reduce these emissions is very important and remarkable if it affects the consumption of these fuels. [Spanish] El proposito de este articulo es presentar la metodologia de calculo de las emisiones de los gases con efecto invernadero (GEI) que son producidos por el sector energetico en Mexico, asi como discutir su posible impacto en las cuestiones de cambio climatico y las posibles acciones de mitigacion que se pueden realizar para abatir la cantidad de emisiones y, por ende, los posibles cambios de clima. En Mexico se han realizado inventarios de GEI desde 1991, ano en que se obtuvo el Inventario Nacional de Gases con Efecto Invernadero para el ano de 1988. Los GEI comprenden al dioxido de carbono (CO2), monoxido de carbono (CO), oxidos de nitrogeno (NOx), metano (CH4), oxido nitroso (N2O) y

  2. Algorithms for adaptive histogram equalization

    International Nuclear Information System (INIS)

    Pizer, S.M.; Austin, J.D.; Cromartie, R.; Geselowitz, A.; Ter Haar Romeny, B.; Zimmerman, J.B.; Zuiderveld, K.

    1986-01-01

    Adaptive histogram equalization (ahe) is a contrast enhancement method designed to be broadly applicable and having demonstrated effectiveness [Zimmerman, 1985]. However, slow speed and the overenhancement of noise it produces in relatively homogeneous regions are two problems. The authors summarize algorithms designed to overcome these and other concerns. These algorithms include interpolated ahe, to speed up the method on general purpose computers; a version of interpolated ahe designed to run in a few seconds on feedback processors; a version of full ahe designed to run in under one second on custom VLSI hardware; and clipped ahe, designed to overcome the problem of overenhancement of noise contrast. The authors conclude that clipped ahe should become a method of choice in medical imaging and probably also in other areas of digital imaging, and that clipped ahe can be made adequately fast to be routinely applied in the normal display sequence

  3. Klystron equalization for RF feedback

    International Nuclear Information System (INIS)

    Corredoura, P.

    1993-01-01

    The next generation of colliding beam storage rings support higher luminosities by significantly increasing the number of bunches and decreasing the spacing between respective bunches. The heavy beam loading requires large RF cavity detuning which drives several lower coupled bunch modes very strongly. One technique which has proven to be very successful in reducing the coupled bunch mode driving impedance is RF feedback around the klystron-cavity combination. The gain and bandwidth of the feedback loop is limited by the group delay around the feedback loop. Existing klystrons on the world market have not been optimized for this application and contribute a large portion of the total loop group delay. This paper describes a technique to reduce klystron group delay by adding an equalizing filter to the klystron RF drive. Such a filter was built and tested on a 500 kill klystron as part of the on going PEP-II R ampersand D effort here at SLAC

  4. The Equity-Equality Conflict

    DEFF Research Database (Denmark)

    Scheuer, Steen

    2013-01-01

    -for-performance systems) perceived as fair and when are they not? When can differences in contribution (equity) overrule the social norm of equality? Which contingent reward structure should be applied for teamwork members, if any? Which structure to motivate employees to a continuous search for smarter working......This article investigatesthe factors that determine workplace actors’ appeal to social norms of fairness in some situations and what ‘fairness’ is perceived as consisting of. When is a pay level considered as relativity fair, and when is it not? When are contingent pay systems (i.e. pay...... procedures and solutions? These are central concerns of motivation theory, where rational choice decisions are counterbalanced by endowment effectsor other fairness concerns. Management is placed in a dilemma between what is, e.g., an economically rational structure of incentives, on the one hand, and what...

  5. Process for the removal of acid forming gases from exhaust gases

    Science.gov (United States)

    Chang, S.G.; Liu, D.K.

    1992-11-17

    Exhaust gases are treated to remove NO or NO[sub x] and SO[sub 2] by contacting the gases with an aqueous emulsion or suspension of yellow phosphorus preferably in a wet scrubber. The pressure is not critical, and ambient pressures are used. Hot water temperatures are best, but economics suggest about 50 C is attractive. The amount of yellow phosphorus used will vary with the composition of the exhaust gas, less than 3% for small concentrations of NO, and 10% or higher for concentrations above say 1000 ppm. Similarly, the pH will vary with the composition being treated, and it is adjusted with a suitable alkali. For mixtures of NO[sub x] and SO[sub 2], alkalis that are used for flue gas desulfurization are preferred. With this process, 100% of the by-products created are usable, and close to 100% of the NO or NO[sub x] and SO[sub 2] can be removed in an economic fashion. 9 figs.

  6. 40 CFR 89.312 - Analytical gases.

    Science.gov (United States)

    2010-07-01

    ... determined to calibration gas tolerances by chromatographic analysis of total hydrocarbons plus impurities or.... (2) Mixtures of gases having the following chemical compositions shall be available: (i) C3H8 and... check gases shall contain propane with 350 ppmC ±75 ppmC hydrocarbon. The three oxygen interference...

  7. Greenhouse Gases Concentrations in the Atmosphere Along ...

    African Journals Online (AJOL)

    This study investigated effect of vehicular emission on greenhouse gases concentrations along selected roads of different traffic densities in Abeokuta, Ogun State, Nigeria. Nine roads comprised highway, commercial and residential were selected. Greenhouse Gases (GHGs) were determined from both sides of the roads by ...

  8. Specific heats of degenerate ideal gases

    OpenAIRE

    Caruso, Francisco; Oguri, Vitor; Silveira, Felipe

    2017-01-01

    From arguments based on Heisenberg's uncertainty principle and Pauli's exclusion principle, the molar specific heats of degenerate ideal gases at low temperatures are estimated, giving rise to values consistent with the Nerst-Planck Principle (third law of Thermodynamics). The Bose-Einstein condensation phenomenon based on the behavior of specific heat of massive and non-relativistic boson gases is also presented.

  9. Method for storing radioactive rare gases

    International Nuclear Information System (INIS)

    Watabe, Atsushi; Nagao, Hiroyuki; Takiguchi, Yukio; Kanazawa, Toshio; Soya, Masataka.

    1975-01-01

    Object: To safely and securely store radioactive rare gases for a long period of time. Structure: The waste gases produced in nuclear power plant are cooled by a cooler and then introduced into a low temperature adsorbing device so that the gases are adsorbed by adsorbents, and then discharged into atmosphere through the purifying gas discharge line. When the radioactive rare gases reach a level of saturation in the amount of adsorption, they are heated and extracted by a suction pump and heated by a heater. The gases are then introduced into an oxygen-impurity removing device and the purified rare gases containing no oxygen and impurities are cooled by a cooler and fed into a gas holder. When the amount of radioactive rare gases stored within the gas holder reaches a given level, they are compressed and sealed by a compressure into a storing cylinder and residual gases in the piping are sucked and recovered into the gas holder, after which the cylinder is removed and stored in a fixed room. (Kamimura, M.)

  10. Ethical Perspectives of Equal Opportunities

    Directory of Open Access Journals (Sweden)

    Traian PALADE

    2016-07-01

    Full Text Available This paper focuses on the analysis of the fair equality of the concept of opportunity from the perspective of the moral and reasonable justifications brought to support positive discrimination. Although contemporary democratic societies guarantee the absence of discrimination by securing the formal equality of opportunity, this seems to be insufficient to balance opportunities. The Rawlsian model has gained ground, by advancing a redistribution of the resources to support the disadvantaged ones, which is implemented through special measures. The compulsory quotas for admission to higher education or public institutions, addressed to some disadvantaged groups, are one of the effective means of implementing fairness. As this system has shattered the principle of reward judging by one‟s merits, and ending up as a form of inverse discrimination of the majority groups, it is necessary that we analyse the arguments and the boomerang effects of the special measures. The undertaking proposed by the present paper is structured around highlighting the ethical aspects, as well as the consequences resulting from the arguments in favour of positive discrimination. Do we have the moral obligation to make up for the past inequalities suffered by some groups? Does preferential treatment really ensure the genuine integration of such groups? Do special measures contribute in creating social justice? Without the claim of having responded definitively and exhaustively to these questions, this paper attempts to emphasise the ethical dilemma that raises when special measures favour one group or another, when a group is protected judging by only one criterion, or when only an implementation area is selected.

  11. Greenhouse effect of chlorofluorocarbons and other trace gases

    Science.gov (United States)

    Hansen, James; Lacis, Andrew; Prather, Michael

    1989-01-01

    A comparison is made of the radiative (greenhouse) forcing of the climate system due to changes of atmospheric chlorofluorocarbons and other trace gases. It is found that CFCs, defined to include chlorofluorocarbons, chlorocarbons, and fluorocarbons, now provide about one-quater of current annual increases in anthropogenic greenhouse climate forcing. If the growth rates of CFC production in the early 1970s had continued to the present, current annual growth of climate forcing due to CFCs would exceed that due to CO2.

  12. Inventory of greenhouse effect gases discharges associated to the production and use of the energy in the metropolitan zone of the valley of Mexico; Inventario de emisiones de gases de efecto invernadero asociados a la produccion y uso de la energia en la zona metropolitana del valle de Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Sheinbaum, Claudia [Secretaria del Medio Ambiente, Mexico, D.F. (Mexico)

    2001-07-01

    The Metropolitan Zone of the Valley of Mexico (ZMCM) consumed in 1996 nearly 635 of PJ in fuels and 76 PJ in electrical energy. In the fuel consumption, the transport sector participated with the 51.4%, followed by the industrial sector (21.6%), the residential one (16.6%), the electrical generation (9.5%), the commerce (0.8%) and the farming (0.2%). This proportion becomes patent in fuels since, the gasoline represents the 48.7% of the fuel consumption of the region, followed by the natural gas (21.4%), the liquefied petroleum gas (16.8%), diesel oil and gas oil (10.3%) and the rest is divided between fuel oil, diaphanous petroleum, kerosine and gas turbine fuel. The total emissions of this CO{sub 2} associated to the fuel consumption in the ZMCM ascended in 1996 to 34.9 Mtons of CO{sub 2}, which is equivalent to nearly 13% of the national emissions for that year. In a similar way to energy, transport represents the 54.9% of the CO{sub 2} emissions, followed by industry (21.3%), the residential sector (15.6%), the electric generation (8.2%) and the commercial and farming sector (1%). In the transport sector, stands out the importance of the private vehicle with the 38.4% of the emissions of this sector. With exception of sulfur oxides, the transport is the sector that contributes in a more important way to the discharges of greenhouse effect gases. Also, with exception of nitrogen oxides, the private vehicle is the one that contributes more to all the emissions. The vehicles previous to 1991 contribute with the emissions of this subsector in 24.5% of the CO{sub 2} emissions, between 54 and 59% of those of CO, between 22 and 25% to those of NO{sub x}, 50 and 51% to those of CH{sub 4}, 49 and 58% to those of NMVOC, 39% to those of N{sub 2}O and 24% to those of SO{sub 2}. In the case of nitrogen oxides, it calls the attention the loading vehicles of more than two axes with diesel engine, that contribute between 46 and 50% of the total emissions of this subsector

  13. Utilization of the noble gases in studies of underground nuclear detonations

    International Nuclear Information System (INIS)

    Smith, C.F.

    1973-01-01

    The Livermore Gas Diagnostics Program employs a number of rare gas isotopes, both stable and radioactive, in its investigations of the phenomenology of underground nuclear detonations. Radioactive gases in a sample are radiochemically purified by elution chromatography, and the separated gases are radioassayed by gamma-ray spectrometry and by internal or thin-window beta proportional counting. Concentrations of the stable gases are determined by mass-spectrometry, following chemical removal of the reactive gases in the sample. The most general application of the noble gases is as device fraction indicators to provide a basis for estimating totals of chimney-gas components. All of the stable rare gases, except argon, have been used as tracers, as have xenon-127 and krypton-85. Argon-37 and krypton-85 have proven to be of particular value in the absence of a good tracer material as reference species for studies of chimney-gas chemistry. The rate of mixing of chimney gases, and the degree to which the sampled gas truly represents the underground gas mixture, can be studied with the aid of the fission-product gases. Radon-222 and helium are released to the cavity from the surrounding rock, and are, therefore, useful in studies of the interaction of the detonation with the surrounding medium

  14. Is Primatology an equal-opportunity discipline?

    Directory of Open Access Journals (Sweden)

    Elsa Addessi

    Full Text Available The proportion of women occupying academic positions in biological sciences has increased in the past few decades, but women are still under-represented in senior academic ranks compared to their male colleagues. Primatology has been often singled out as a model of "equal-opportunity" discipline because of the common perception that women are more represented in Primatology than in similar fields. But is this indeed true? Here we show that, although in the past 15 years the proportion of female primatologists increased from the 38% of the early 1990s to the 57% of 2008, Primatology is far from being an "equal-opportunity" discipline, and suffers the phenomenon of "glass ceiling" as all the other scientific disciplines examined so far. In fact, even if Primatology does attract more female students than males, at the full professor level male members significantly outnumber females. Moreover, regardless of position, IPS male members publish significantly more than their female colleagues. Furthermore, when analyzing gender difference in scientific productivity in relation to the name order in the publications, it emerged that the scientific achievements of female primatologists (in terms of number and type of publications do not always match their professional achievements (in terms of academic position. However, the gender difference in the IPS members' number of publications does not correspond to a similar difference in their scientific impact (as measured by their H index, which may indicate that female primatologists' fewer articles are of higher impact than those of their male colleagues.

  15. Is Primatology an equal-opportunity discipline?

    Science.gov (United States)

    Addessi, Elsa; Borgi, Marta; Palagi, Elisabetta

    2012-01-01

    The proportion of women occupying academic positions in biological sciences has increased in the past few decades, but women are still under-represented in senior academic ranks compared to their male colleagues. Primatology has been often singled out as a model of "equal-opportunity" discipline because of the common perception that women are more represented in Primatology than in similar fields. But is this indeed true? Here we show that, although in the past 15 years the proportion of female primatologists increased from the 38% of the early 1990s to the 57% of 2008, Primatology is far from being an "equal-opportunity" discipline, and suffers the phenomenon of "glass ceiling" as all the other scientific disciplines examined so far. In fact, even if Primatology does attract more female students than males, at the full professor level male members significantly outnumber females. Moreover, regardless of position, IPS male members publish significantly more than their female colleagues. Furthermore, when analyzing gender difference in scientific productivity in relation to the name order in the publications, it emerged that the scientific achievements of female primatologists (in terms of number and type of publications) do not always match their professional achievements (in terms of academic position). However, the gender difference in the IPS members' number of publications does not correspond to a similar difference in their scientific impact (as measured by their H index), which may indicate that female primatologists' fewer articles are of higher impact than those of their male colleagues.

  16. The storage of greenhouse gases

    International Nuclear Information System (INIS)

    Herzog, H.; Kaarstad, O.; Eliasson, B

    2000-01-01

    Since 1850, that is to say the beginning of the industrial era,the concentration of carbon dioxide in the atmosphere has risen from 280 ppm to 370 ppm, this increase is mainly due to the combustion of fossil fuels. Today fossil fuels represent 85% of all the energy used in the world. Fearing progressive climatic changes, more and more governments become aware of the necessity of reducing the emission of greenhouse gases. A more efficient use of energy and the promoting of renewable energies and of the nuclear energy are the most evident solutions but they appear to be insufficient. A third solution is the storage of carbon dioxide in geological layers. This technique has been put into use since 1996 in Norway. An off-shore natural gas platform injects carbon dioxide in a geological reservoir situated 1000 meters below the ocean bed. The injection of CO 2 could be used in oil fields in order to facilitate the extraction of petroleum. Far more large and efficient reservoirs would be the oceans, they already hold up 40000 10 9 tons of dissolved CO 2 . Even if the double of the carbon dioxide accumulated in the atmosphere since 1850 were injected, the concentration of carbon in sea waters would rise by less than 2%. The safety of CO 2 storage and the impact on the environment of ocean injection sites are being studied. (A.C.)

  17. Greenhouse gases and emissions trading

    International Nuclear Information System (INIS)

    LeBlanc, A.; Dudek, D.J.

    1993-01-01

    Global cooperation is essential in cutting greenhouse-gas emissions, say Alice LeBlanc and Daniel J. Dudek of the Environmental Defense in New York City. The first step, they continue, is agreement among nations on an overall global limit for all greenhouse gases, followed by an allocation of the global limit among nations. The agreements must contain effective reporting and monitoring systems and enforcement provisions, they add. The Framework Convention on Climate Change, signed by most nations of the world in Brazil in 1992, provides the foundation for such an agreement, LeBlanc and Dudek note. open-quotes International emissions trading is a way to lower costs and expand reduction options for the benefit of all,close quotes they contend. Under such an arrangement, an international agency would assign allowances, stated in tons of carbon dioxide. Countries would be free to buy and sell allowances, but no country could exceed, in a given year, the total allowances it holds. By emitting less than its allowed amount, a country would accumulate more allowances, which it could sell. The authors claim such a system would offer benefits to the world economy by saving billions of dollars in pollution-reduction costs while still achieving emission limits established in an international agreement

  18. 49 CFR 236.792 - Reservoir, equalizing.

    Science.gov (United States)

    2010-10-01

    ... Reservoir, equalizing. An air reservoir connected with and adding volume to the top portion of the equalizing piston chamber of the automatic brake valve, to provide uniform service reductions in brake pipe...

  19. Analysis 1: SDG5, gender equal fisheries

    OpenAIRE

    Williams, Meryl J.

    2017-01-01

    What are the challenges in the path of achieving gender equality in fisheries and what should our priorities be? This article tries to identify these in the context of SDG 5, the Sustainable Development Goal on gender equality.

  20. 76 FR 53807 - Women's Equality Day, 2011

    Science.gov (United States)

    2011-08-29

    ... States to celebrate the achievements of women and recommit ourselves to the goal of gender equality in... Vol. 76 Monday, No. 167 August 29, 2011 Part IV The President Proclamation 8699--Women's Equality...

  1. 77 FR 52583 - Women's Equality Day, 2012

    Science.gov (United States)

    2012-08-29

    ... celebrate the achievements of women and recommit to realizing gender equality in this country. [[Page 52586... Equality Day, 2012 #0; #0; #0; Presidential Documents #0; #0; #0;#0;Federal Register / Vol. 77 , No. 168...

  2. The neural bases for valuing social equality.

    Science.gov (United States)

    Aoki, Ryuta; Yomogida, Yukihito; Matsumoto, Kenji

    2015-01-01

    The neural basis of how humans value and pursue social equality has become a major topic in social neuroscience research. Although recent studies have identified a set of brain regions and possible mechanisms that are involved in the neural processing of equality of outcome between individuals, how the human brain processes equality of opportunity remains unknown. In this review article, first we describe the importance of the distinction between equality of outcome and equality of opportunity, which has been emphasized in philosophy and economics. Next, we discuss possible approaches for empirical characterization of human valuation of equality of opportunity vs. equality of outcome. Understanding how these two concepts are distinct and interact with each other may provide a better explanation of complex human behaviors concerning fairness and social equality. Copyright © 2014 Elsevier Ireland Ltd and the Japan Neuroscience Society. All rights reserved.

  3. Promoting Racial Equality in the Nursing Curriculum.

    Science.gov (United States)

    Foolchand, M. K.

    1995-01-01

    Equality in nursing education and the profession can be promoted in the following ways: a working policy on racism and equal opportunities; curriculum content that explores stereotypes, values, attitudes, and prejudices; and multicultural health research, education, and promotion. (SK)

  4. Equality in the Framework of Justice

    OpenAIRE

    Aşik, Kübra

    2015-01-01

    This thesis assesses the relation between equality and justice by exploring and identifying the relation between equality and justice in Rawls's theory of justice, Sandel's communitarian account of Justice and Sen's capability approach. And these accounts of justice are evaluated from an egalitarian point of view. The main argument defended in the thesis is that justice requires equality. Accordingly, these three accounts of justice are evaluated by taking their understanding of equality into...

  5. Loudspeaker Equalization with Post-Processing

    Directory of Open Access Journals (Sweden)

    Ser Wee

    2002-01-01

    Full Text Available Loudspeaker equalization is an essential technique in audio system design. A well-known equalization scheme is based on the deconvolution of the desired equalized response with the measured impulse response of the loudspeaker. In this paper, a post-processing scheme is combined with the deconvolution-based algorithm to provide a better equalization effect. Computer simulation results are given to demonstrate the significant improvement that can be achieved using this method.

  6. Office of Diversity Management and Equal Opportunity

    Science.gov (United States)

    Opportunity Office of Diversity Management and Equal Opportunity Home About ODMEO Leadership Documents News Skip to main content (Press Enter). Toggle navigation Office of Diversity Management and Equal Opportunity Search Search ODMEO: Search Search ODMEO: Search Office of Diversity Management and Equal

  7. Transforming equality logic to propositional logic

    NARCIS (Netherlands)

    Zantema, H.; Groote, J.F.

    2003-01-01

    Abstract We investigate and compare various ways of transforming equality formulas to propositional formulas, in order to be able to solve satisfiability in equality logic by means of satisfiability in propositional logic. We propose equality substitution as a new approach combining desirable

  8. Sex, Money and the Equal Pay Act

    Science.gov (United States)

    Feldman, Edwin B.

    1973-01-01

    Institutions who justify a wage differential between male and female custodians on the basis that women typically do the lighter work, and men the heavier, can find themselves in trouble. The Equal Pay Act of 1963 requires that men and women get the same pay for equal work -- and all custodial work is substantially equal to the Labor Department.…

  9. Does 0.999... Really Equal 1?

    Science.gov (United States)

    Norton, Anderson; Baldwin, Michael

    2012-01-01

    This article confronts the issue of why secondary and post-secondary students resist accepting the equality of 0.999... and 1, even after they have seen and understood logical arguments for the equality. In some sense, we might say that the equality holds by definition of 0.999..., but this definition depends upon accepting properties of the real…

  10. Individualized Sex Equality in Transforming Finnish Academia

    Science.gov (United States)

    Lätti, Johanna

    2017-01-01

    This article examines the equality agenda in the context of Finnish university reform in the 21st century. In Finland, the academic regime went through an organizational transformation after the Universities Act in 2009. However, little attention has been paid to the questions of sex or equality. Since the policy influences on equality in…

  11. Injury done to vegetation by gases arising from certain manufacturing processes

    Energy Technology Data Exchange (ETDEWEB)

    Hamburger, S

    1884-04-29

    The question of damage done to vegetation by smoke and acid gases escaping from the chimneys of manufacturing establishments is comparatively of recent date, and complaints seem to have increased with the progress which industry has made in the last decades. Such complaints have principally been brought forward in districts where many manufactures were carried on, and the blame was always laid at the doors of chemical manufacturers, and especially the alkali makers, of whose works it was known that they gave rise to large quantities of acid gases. Lately this subject has been taken up by several unprejudiced investigators, and great credit is due to them for having shown that gases arising from other manufactures maybe equally noxious, and even more so. Much, however, still remains to be done in that direction. People somehow cling to their old belief, and every endeavor ought to be made to dispel that erroneous notion. That is the object of this paper.

  12. Method of removing oxides of sulfur and oxides of nitrogen from exhaust gases

    Science.gov (United States)

    Walker, Richard J.

    1986-01-01

    A continuous method is presented for removing both oxides of sulfur and oxides of nitrogen from combustion or exhaust gases with the regeneration of the absorbent. Exhaust gas is cleaned of particulates and HCl by a water scrub prior to contact with a liquid absorbent that includes an aqueous solution of bisulfite and sulfite ions along with a metal chelate, such as, an iron or zinc aminopolycarboxylic acid. Following contact with the combustion gases the spent absorbent is subjected to electrodialysis to transfer bisulfite ions into a sulfuric acid solution while splitting water with hydroxide and hydrogen ion migration to equalize electrical charge. The electrodialysis stack includes alternate layers of anion selective and bipolar membranes. Oxides of nitrogen are removed from the liquid absorbent by air stripping at an elevated temperature and the regenerated liquid absorbent is returned to contact with exhaust gases for removal of sulfur oxides and nitrogen oxides.

  13. Greenhouse gases study in Amazonia

    International Nuclear Information System (INIS)

    D'Amelio, Monica Tais Siqueira

    2006-01-01

    The Amazon plays an important role on the global carbon cycle, as changing as carbon storage, since Amazon Basin is the biggest area of tropical forest, around 50% of global. Natural's process, deforestation, and use land are CO 2 sources. The Amazon forest is a significant source of N 2 O by soil process, and CH 4 by anaerobic process like flooded areas, rice cultures, and others sources. This project is part of the LBA project (Large-Scale Biosphere Atmosphere Experiment in Amazonia), and this project is 'Vertical profiles of carbon dioxide and other trace gas species over the Amazon basin using small aircraft'. Since December 2000 vertical profiles of CO 2 , CH 4 , CO, H 2 , N 2 O and SF 6 have been measured above central Amazonia. The local sampling was over Tapajos National Forest, a primary forest in Para State, where had a CO 2 flux tower and an east impact area with sources like animals, rice cultivation, biomass burning, etc, to compare the influence of an impact area and a preserved area in the profiles. The Reserva Biologica de Cuieiras, at Amazon State, is the other studied place, where there already exists a CO 2 flux tower, and an east preserved area at this State, to compare with the Cuieiras. The sampling has been carried out on vertical profile from 1000 ft up to 12000 ft using a semi-automated sampling package developed at GMD/NOAA and a small aircraft. The analysis uses the MAGICC system (Multiple Analysis of Gases Influence Climate Change) which is installed at the Atmospheric Chemistry Laboratory (LQA) in IPEN (Instituto de Pesquisas Energeticas e Nucleares). The results showed that all gases studied, except H 2 gas, has been following the global trend. At the Para State, for the studied years, the Amazonian Forest performed as small CO 2 sink. To compare Wet and Dry Seasons, subtracted the Ascension concentration values in the period to remove the global influence. So that, in the 2004 and 2005 wet seasons and 2004 dry season comparison it was

  14. Emissions, activity data, and emission factors of fluorinated greenhouse gases (F-Gases) in Germany 1995-2002

    Energy Technology Data Exchange (ETDEWEB)

    Schwarz, Winfried [Oeko-Recherche, Buero fuer Umweltforschung und -beratung GmbH, Frankfurt am Main (Germany)

    2005-06-15

    Before the 1997 Kyoto Protocol on Climate Protection, the fluorinated greenhouse gases HFCs, PFCs, and SF6 (F-gases) aroused little public attention. Since then, the standards on surveying and reporting on national emissions have been rising constantly. Amongst others, the annual reporting to the UNFCCC secretariat makes detailed declarations on use and emissions of F-gases necessary, which have to be filled in specified formats for submission (Common Reporting Format = CRF). The scientific basis has been set out by the UNFCCC guidelines on reporting, in accordance with the instructions laid down in IPCC good practice guidance. Additionally, in Germany the Centralised System of Emissions (ZSE) shall provide a suitable tool to satisfy any quality needs of both activity data and emission factors. From 1995 onwards, activity data and emissions of each individual application sector shall be presented in a comprehensible and transparent way. Therefore, the way of data collection as well as the estimation methods applied must be well documented. Moreover, data has to be prepared for appropriate importation into ZSE. It is the objective of this study to provide the transparency demanded within 40 national application sectors of F-gases, for the period between 1995 and 2002. - Firstly, all the activity data as well as the emissions related to them are presented and commented. This applies to manufacturing of products, F-gases banked in operating systems, and decommissioning. - Secondly, the methodologies applied to calculate the emissions are described and all sources of information are revealed, e.g. literature, names of experts from the manufacturing industry, users, trade, and academia. - Thirdly, reliability and safety of data are discussed. - Fourthly, possible deviations from the IPCC default values are stated and given reasons for. Wherever this intensive reviewing of 40 sectors through eight years of reporting uncovers gaps or inconsistencies in previous reports

  15. Thermodynamics of ultracold Fermi gases

    International Nuclear Information System (INIS)

    Nascimbene, Sylvain

    2010-01-01

    Complex Hamiltonians from condensed matter, such as the Fermi-Hubbard model, can be experimentally studied using ultracold gases. This thesis describes a new method for determining the equation of state of an ultracold gas, making the comparison with many-body theories straightforward. It is based on the measurement of the local pressure inside a trapped gas from the analysis of its in situ image. We first apply this method to the study of a Fermi gas with resonant interactions, a weakly-interacting 7 Li gas acting as a thermometer. Surprisingly, none of the existing many-body theories of the unitary gas accounts for the equation of state deduced from our study over its full range. The virial expansion extracted from the high-temperature data agrees with the resolution of the three-body problem. At low temperature, we observe, contrary to some previous studies, that the normal phase behaves as a Fermi liquid. Finally we obtain the critical temperature for superfluidity from a clear signature on the equation of state. We also measure the pressure of the ground state as a function of spin imbalance and interaction strength - measure directly relevant to describe the crust of neutron stars. Our data validate Monte-Carlo simulations and quantify the Lee-Huang-Yang corrections to mean-field interactions in low-density fermionic or bosonic superfluids. We show that, in most cases, the partially polarized normal phase can be described as a Fermi liquid of polarons. The polaron effective mass extracted from the equation of state is in agreement with a study of collective modes. (author)

  16. Rare gases in Samoan xenoliths

    Science.gov (United States)

    Poreda, R. J.; Farley, K. A.

    1992-09-01

    The rare gas isotopic compositions of residual harzburgite xenoliths from Savai'i (SAV locality) and an unnamed seamount south of the Samoan chain (PPT locality) provide important constraints on the rare gas evolution of the mantle and atmosphere. Despite heterogeneous trace element compositions, the rare gas characteristics of the xenoliths from each of the two localities are strikingly similar. SAV and PPT xenoliths have 3He/ 4He ratios of11.1 ± 0.5 R A and21.6 ± 1 R A, respectively; this range is comparable to the 3He/ 4He ratios in Samoan lavas and clearly demonstrates that they have trapped gases from a relatively undegassed reservoir. The neon results are not consistent with mixing between MORB and a plume source with an atmospheric signature. Rather, the neon isotopes reflect either a variably degassed mantle (with a relative order of degassing of Loihi Honda et al. that the 20Ne/ 22Ne ratio in the mantle more closely resembles the solar ratio than the atmospheric one. 40Ar/ 36Ar ratios in the least contaminated samples range from 4,000 to 12,000 with the highest values in the 22 RA PPT xenoliths. There is no evidence for atmospheric 40Ar/ 36Ar ratios in the mantle source of these samples, which indicates that the lower mantle may have 40Ar/ 36Ar ratios in excess of 5,000. Xenon isotopic anomalies in 129Xe and 136Xe are as high as 6%, or about half of the maximum MORB excess and are consistent with the less degassed nature of the Samoan mantle source. These results contradict previous suggestions that the high 3He/ 4He mantle has a near-atmospheric heavy rare gas isotopic composition.

  17. Subnanosecond breakdown in high-pressure gases

    Science.gov (United States)

    Naidis, George V.; Tarasenko, Victor F.; Babaeva, Natalia Yu; Lomaev, Mikhail I.

    2018-01-01

    Pulsed discharges in high-pressure gases are of considerable interest as sources of nonequilibrium plasma for various technological applications: pollution control, pumping of laser media, plasma-assisted combustion, etc. Recently, attention has been attracted to the use of subnanosecond voltage fronts, producing diffuse discharges with radii of several millimeters. Such plasma structures, similar to pulsed glow discharges, are of special interest for applications due to quasi-uniformity of plasma parameters in relatively large gas volumes. This review presents the results of experimental and computational study of subnanosecond diffuse discharge formation. A description of generators of short high-voltage pulses with subnanosecond fronts and of discharge setups is given. Diagnostic methods for the measurement of various discharge parameters with high temporal and spatial resolution are described. Obtained experimental data on plasma properties for a wide range of governing factors are discussed. A review of various theoretical approaches used for computational study of the dynamics and structure of fast ionization waves is given; the applicability of conventional fluid streamer models for simulation of subnanosecond ionization waves is discussed. Calculated spatial-temporal profiles of plasma parameters during streamer propagation are presented. The efficiency of subnanosecond discharges for the production of reactive species is evaluated. On the basis of the comparison of simulation results and experimental data the effects of various factors (voltage rise time, polarity, etc.) on discharge characteristics are revealed. The major physical phenomena governing the properties of subnanosecond breakdown are analyzed.

  18. Balance of greenhouse gases emission in the life cycle of ethanol fuel; Balanco de emissao de gases de efeito estufa no ciclo de vida do etanol combustivel

    Energy Technology Data Exchange (ETDEWEB)

    Silva, Cinthia Rubio Urbano da [Universidade Estadual de Campinas (UNICAMP), SP (Brazil). Fac. de Engenharia Mecanica. Programa de Pos-Graduacao em Planejamento de Sistemas Energeticos; Walter, Arnaldo Cesar da Silva [Universidade Estadual de Campinas (UNICAMP), SP (Brazil). Fac. de Engenharia Mecanica

    2008-07-01

    The environmental focus of the use of biofuels is the reduction of green houses gases emissions through automobile exhaust; furthermore, the European Union has discussed the necessity of the requirement these reduction between 30 to 50% compared with the gasoline cycle. Inside this context, this paper joins and compares recent studies about green house gases emission balance of environmental life cycle of ethanol fuel derived form corn, wheat and sugar cane with the goal of recognize the reduction these emissions from the use of ethanol in function of the different alternatives of production. Results show that production of ethanol from sugar cane results higher reduction of green house gases emission compared with the gasoline. Ethanol from corn and ethanol from wheat meet, in the current conditions of Canadian production and use, the least requirement of 30% of saved emission. (author)

  19. The policy on gender equality in Denmark

    DEFF Research Database (Denmark)

    Agustin, Lise Rolandsen

    The briefing paper describes current Danish policies, practices and legislation within the area of gender equality. It addresses economic independence, reconciliation policies, participation in decision-making, gender-based violence and trafficking, gender stereotypes, and gender equality...... in development policies. The former liberal-conservative government (2001-2011) has focused on equal opportunities, gender equality as a means to economic growth, voluntary measures and freedom of choice. Increased attention has been paid in recent years to ethnic minorities and to men’s role in gender equality....

  20. Trust, Welfare States and Income Equality

    DEFF Research Database (Denmark)

    Bergh, Andreas; Bjørnskov, Christian

    2014-01-01

    The cross-country correlation between social trust and income equality is well documented, but few studies examine the direction of causality. We show theoretically that by facilitating cooperation, trust may lead to more equal outcomes, while the feedback from inequality to trust is ambiguous....... Using a structural equation model estimated on a large country sample, we find that trust has a positive effect on both market and net income equality. Larger welfare states lead to higher net equality but neither net income equality nor welfare state size seems to have a causal effect on trust. We...

  1. The evolution of minor active and toxic gases in repositories

    International Nuclear Information System (INIS)

    Biddle, P.; Rees, J.H.; Davies, A.A.; McGahan, D.J.; Rushbrook, P.E.

    1988-09-01

    This study has considered a number of toxic and active gases which could potentially form in relatively small amounts in a deep repository for radioactive wastes. It has been concluded that many of these would react under repository conditions or be highly soluble in groundwater. The minor amounts of the inert and relatively insoluble gas krypton-85 would dissolve in a small volume of repository water. The wide range of organic gases and vapours that could form in trace amounts has been shortened to a list of 21 by consideration of their toxicity, volatibility and extent of formation at a landfill site for non-radioactive waste. The amounts of the inert and inactive gas helium formed from α-particles and the decay of tritium will have only a very minor effect on the overall rate of gas production. (author)

  2. Iodine speciation in the hot cell effluent gases

    International Nuclear Information System (INIS)

    Lee, B.S.; Jester, W.A.; Olynyk, J.M.

    1990-01-01

    The various species of airborne radioiodine can affect the iodine source term of a severe core damage accident because of the different transport and deposition properties. also, the radiobiological hazardness may vary according to their chemical form. The purpose of the work reported in this paper was to characterize the various chemical forms of airborne radioiodine in hot cell effluent gases of a radiopharmaceutical production facility that produces medical radioisotopes from separated fission products of irradiated uranium targets. It is concluded that the methyl iodide is the youngest chemical species in terms of effective decay time age, and the hot cell filter bank is least efficient in removing the methyl iodide

  3. THE ASSISTANCE TO DEVELOP GLOBAL BRANCH OF LOW-TEMPERATURE INDUSTRIAL GASES

    OpenAIRE

    Лавренченко, Г. К.

    2014-01-01

    The Ukrainian Association of industrial gases manufacturers «UA-SIGMA» will be ten years in this year. The Association currently includes 33 companies from Ukraine, Russia and Kazakhstan. The main purpose of the Association — to develop scientific and technical recommendations to improve systems of air separation plants for the production of various low-temperature industrial gases, to ensure their safe and efficient operation. The Association provides training and skills development of cryog...

  4. Anaesthetic gases: environmental impact and alternatives

    African Journals Online (AJOL)

    Little consideration has been given to the environmental impact of anaesthetic gas .... our practice to select gases with a lower environmental impact is also ... is used as raw material for new anaesthetics. ... none in the pipeline.1. Conclusion.

  5. Voluntary reporting of greenhouse gases, 1995

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-07-01

    The Voluntary Reporting Program for greenhouse gases is part of an attempt by the U.S. Government to develop innovative, low-cost, and nonregulatory approaches to limit emissions of greenhouse gases. It is one element in an array of such programs introduced in recent years as part of the effort being made by the United States to comply with its national commitment to stabilize emissions of greenhouse gases under the Framework Convention on Climate Change. The Voluntary Reporting Program, developed pursuant to Section 1605(b) of the Energy Policy Act of 1992, permits corporations, government agencies, households, and voluntary organizations to report to the Energy Information Administration (EIA) on actions taken that have reduced or avoided emissions of greenhouse gases.

  6. Granular Gases: Probing the Boundaries of Hydrodynamics

    International Nuclear Information System (INIS)

    Goldhirsch, I.

    1999-01-01

    The dissipative nature of the particle interactions in granular systems renders granular gases mesoscopic and bearing some similarities to regular gases in the ''continuum transition regime'' where shear rates and/or thermal gradients are very large). The following properties of granular gases support the above claim: (i). Mean free times are of the same order as macroscopic time scales (inverse shear rates); (ii). Mean free paths can be macroscopic and comparable to the system's dimensions; (iii). Typical flows are supersonic; (iv). Shear rates are typically ''large''; (v). Stress fields are scale (resolution) dependent; (vi). Burnett and super-Burnett corrections to both the constitutive relations and the boundary conditions are of importance; (vii). Single particle distribution functions can be far from Gaussian. It is concluded that while hydrodynamic descriptions of granular gases are relevant, they are probing the boundaries of applicability of hydrodynamics and perhaps slightly beyond

  7. Greenhouse gases - observed tendencies contra scenarios

    International Nuclear Information System (INIS)

    Groenaas, Sigbjoern

    2006-01-01

    The article presents a study of the increase in greenhouse gases and concludes that it will be necessary to substantially reduce the CO2 concentrations in the atmosphere in order to avoid serious climatic changes

  8. Climate Change, Greenhouse Gases and Aerosols

    Indian Academy of Sciences (India)

    user

    their radiative properties are similar to the glass used in a green- house. Greenhouse gases in the Earth's atmosphere absorb 90% of the radiation emitted .... and wind speed and direction in each box is calculated using the physical laws gov-.

  9. Roadside management strategies to reduce greenhouse gases.

    Science.gov (United States)

    2010-06-01

    Californias Global Warming Solutions Act of 2006 (AB 32), Sustainable Communities and Climate Protection Act : (SB 375), and Executive Order S-14-08 direct Caltrans to develop actions to reduce greenhouse gases (GHGs). Air : pollution reduction is...

  10. Low energy (e,2e) studies of the noble gases in the perpendicular plane

    OpenAIRE

    Nixon , Kate L; Murray , Andrew James; Kaiser , Christian

    2010-01-01

    Abstract Detailed (e, 2e) studies of the electron impact ionization of the noble gases helium, neon, argon, krypton and xenon have been carried out from near threshold to intermediate energies, where the outgoing electrons carry equal energy from the interaction. The experiments were conducted in the perpendicular plane, where the outgoing electrons are both detected orthogonal to the incident electron beam. For electrons to emerge in this geometry they must undergo multiple scattering, in...

  11. High order harmonic generation in rare gases

    Energy Technology Data Exchange (ETDEWEB)

    Budil, Kimberly Susan [Univ. of California, Davis, CA (United States)

    1994-05-01

    The process of high order harmonic generation in atomic gases has shown great promise as a method of generating extremely short wavelength radiation, extending far into the extreme ultraviolet (XUV). The process is conceptually simple. A very intense laser pulse (I ~1013-1014 W/cm2) is focused into a dense (~1017 particles/cm3) atomic medium, causing the atoms to become polarized. These atomic dipoles are then coherently driven by the laser field and begin to radiate at odd harmonics of the laser field. This dissertation is a study of both the physical mechanism of harmonic generation as well as its development as a source of coherent XUV radiation. Recently, a semiclassical theory has been proposed which provides a simple, intuitive description of harmonic generation. In this picture the process is treated in two steps. The atom ionizes via tunneling after which its classical motion in the laser field is studied. Electron trajectories which return to the vicinity of the nucleus may recombine and emit a harmonic photon, while those which do not return will ionize. An experiment was performed to test the validity of this model wherein the trajectory of the electron as it orbits the nucleus or ion core is perturbed by driving the process with elliptically, rather than linearly, polarized laser radiation. The semiclassical theory predicts a rapid turn-off of harmonic production as the ellipticity of the driving field is increased. This decrease in harmonic production is observed experimentally and a simple quantum mechanical theory is used to model the data. The second major focus of this work was on development of the harmonic "source". A series of experiments were performed examining the spatial profiles of the harmonics. The quality of the spatial profile is crucial if the harmonics are to be used as the source for experiments, particularly if they must be refocused.

  12. Gases for an SSC muon detector

    International Nuclear Information System (INIS)

    Christophorou, L.G.; Datskos, P.G.; Carter, J.G.; Tennessee Univ., Knoxville, TN

    1990-01-01

    Recent measurements of electron drift velocities as a function of the density-reduced electric field E/N are reported for a number of unitary gases and the mixtures CO 2 /CH 4 and NH 3 /CF 4 /Ar. Calculated values of the mean electron energy as a function of E/N are also reported for unitary gases and mixtures of CO 2 /CH 4 . 7 refs., 5 figs

  13. Flux Jacobian Matrices For Equilibrium Real Gases

    Science.gov (United States)

    Vinokur, Marcel

    1990-01-01

    Improved formulation includes generalized Roe average and extension to three dimensions. Flux Jacobian matrices derived for use in numerical solutions of conservation-law differential equations of inviscid flows of ideal gases extended to real gases. Real-gas formulation of these matrices retains simplifying assumptions of thermodynamic and chemical equilibrium, but adds effects of vibrational excitation, dissociation, and ionization of gas molecules via general equation of state.

  14. Pseudogap phenomena in ultracold atomic Fermi gases

    OpenAIRE

    Chen, Qijin; Wang, Jibiao

    2014-01-01

    The pairing and superfluid phenomena in a two-component ultracold atomic Fermi gas is an analogue of Cooper pairing and superconductivity in an electron system, in particular, the high $T_c$ superconductors. Owing to the various tunable parameters that have been made accessible experimentally in recent years, atomic Fermi gases can be explored as a prototype or quantum simulator of superconductors. It is hoped that, utilizing such an analogy, the study of atomic Fermi gases may shed light to ...

  15. Is Primatology an Equal-Opportunity Discipline?

    Science.gov (United States)

    Borgi, Marta

    2012-01-01

    The proportion of women occupying academic positions in biological sciences has increased in the past few decades, but women are still under-represented in senior academic ranks compared to their male colleagues. Primatology has been often singled out as a model of “equal-opportunity” discipline because of the common perception that women are more represented in Primatology than in similar fields. But is this indeed true? Here we show that, although in the past 15 years the proportion of female primatologists increased from the 38% of the early 1990s to the 57% of 2008, Primatology is far from being an “equal-opportunity” discipline, and suffers the phenomenon of “glass ceiling” as all the other scientific disciplines examined so far. In fact, even if Primatology does attract more female students than males, at the full professor level male members significantly outnumber females. Moreover, regardless of position, IPS male members publish significantly more than their female colleagues. Furthermore, when analyzing gender difference in scientific productivity in relation to the name order in the publications, it emerged that the scientific achievements of female primatologists (in terms of number and type of publications) do not always match their professional achievements (in terms of academic position). However, the gender difference in the IPS members' number of publications does not correspond to a similar difference in their scientific impact (as measured by their H index), which may indicate that female primatologists' fewer articles are of higher impact than those of their male colleagues. PMID:22272353

  16. Analysis of electron interactions in dielectric gases

    International Nuclear Information System (INIS)

    Olivet, Aurelio; Duque, Daniel; Vega, Lourdes F.

    2007-01-01

    We present and discuss results concerning electron interactions processes of dielectric gases and their relationship with the macroscopic behavior of these gases, in particular, with their dielectric strength. Such analysis is based on calculating energies of reactions for molecular ionization, dissociative ionization, parent negative ion formation, and dissociative electron attachment processes. We hypothesize that the estimation of the required energy for a reduced number of processes that take place in electrically stressed gases could be related to the gas' capability to manage the electron flow during an electrical discharge. All calculations were done with semiempirical quantum chemistry methods, including an initial optimization of molecular geometry and heat of formation of the dielectric gases and all of species that appear during electron interaction reactions. The performance of semiempirical methods Austin model 1 and Parametric model 3 (PM3) was compared for several compounds, PM3 being superior in most cases. Calculations performed for a sample of nine dielectric gases show that electron attachment and detachment processes occur in different energy bands that do not overlap for any value of the dielectric strength. We have also analyzed the relationship between dielectric strength and two physical properties: electron affinity and ionization energy. Calculations performed for 43 dielectric gases show no clear correlation between them, although certain guidelines for the qualitative estimation of dielectric strength can still be assessed

  17. Gases and carbon in metals. Pt. 14

    International Nuclear Information System (INIS)

    Jehn, H.; Speck, H.; Hehn, W.; Fromm, E.; Hoerz, G.

    1981-01-01

    This issue is part of a series of data on 'Gases and Carbon in Metals' which supplements the data compilation in the book 'Gase und Kohlenstoff in Metallen' (Gases and Carbon in Metals), edited by E. Fromm and E. Gebhardt, Springer-Verlag, Berlin 1976. The present survey includes results from papers published after the copy deadline and recommends critically selected data. Furthermore, it comprises a bibliography of relevant literature. For each element, firstly data on binary systems are presented, starting with hydrogen and followed by carbon, nitrogen, oxygen, and rare gases. Within one metal-metalloid system the data are listed under topics such as solubility, solubility limit, dissociation pressure of compounds, vapour pressure of volatile oxides, thermodynamic data, diffusion, transport parameters (effective valence, heat of transport), permeation of gases through metals, gas absorption and gas desorption kinetics, compound formation kinetics, precipitation kinetics, and property changes. Following the data on binary systems, the data of ternary systems are presented, beginning with systems which contain one metal and two gases or one gas and carbon and continuing with systems with two metals and one gas or carbon. (orig./GE)

  18. Synergistic co-digestion of solid-organic-waste and municipal-sewage-sludge: 1 plus 1 equals more than 2 in terms of biogas production and solids reduction.

    Science.gov (United States)

    Aichinger, Peter; Wadhawan, Tanush; Kuprian, Martin; Higgins, Matthew; Ebner, Christian; Fimml, Christian; Murthy, Sudhir; Wett, Bernhard

    2015-12-15

    Making good use of existing water infrastructure by adding organic wastes to anaerobic digesters improves the energy balance of a wastewater treatment plant (WWTP) substantially. This paper explores co-digestion load limits targeting a good trade-off for boosting methane production, and limiting process-drawbacks on nitrogen-return loads, cake-production, solids-viscosity and polymer demand. Bio-methane potential tests using whey as a model co-substrate showed diversification and intensification of the anaerobic digestion process resulting in a synergistical enhancement in sewage sludge methanization. Full-scale case-studies demonstrate organic co-substrate addition of up to 94% of the organic sludge load resulted in tripling of the biogas production. At organic co-substrate addition of up to 25% no significant increase in cake production and only a minor increase in ammonia release of ca. 20% have been observed. Similar impacts were measured at a high-solids digester pilot with up-stream thermal hydrolyses where the organic loading rate was increased by 25% using co-substrate. Dynamic simulations were used to validate the synergistic impact of co-substrate addition on sludge methanization, and an increase in hydrolysis rate from 1.5 d(-1) to 2.5 d(-1) was identified for simulating measured gas production rate. This study demonstrates co-digestion for maximizing synergy as a step towards energy efficiency and ultimately towards carbon neutrality. Copyright © 2015 Elsevier Ltd. All rights reserved.

  19. Equal Opportunity Program Management for the Army Medical Department

    Science.gov (United States)

    2008-04-09

    applies to someone who has the physical, cultural, or linguistic characteristics of a national group. Personal Racism , Sexism , or Bigotry: The ...Management and Army Demographics and Statistics Departments. LTC Horrell arranged my VIP trip to the Defense Equal Opportunity Management Institute (DEOMI...harassment in the organization. Organizational productivity is maximized when illegal discrimination is eradicated. One theory of why discrimination

  20. The Myth of Social Equalization: Hispanics and Higher Education.

    Science.gov (United States)

    Mancuso-Edwards, Flora

    There is a popular and pervasive myth that higher education has been a potent social equalizer and great enfranchising vehicle for immigrants to the United States. Historic facts place the vast majority of yesterday's immigrants behind pushcarts or alongside mass production lines, waiting two or three generations before benefiting from the fruits…

  1. Predicting enhanced absorption of light gases in polyethylene using simplified PC-SAFT and SAFT-VR

    DEFF Research Database (Denmark)

    Haslam, Andrew J.; von Solms, Nicolas; Adjiman, Claire S.

    2006-01-01

    . For the case of ternary mixtures of two gases with PE, it is predicted that the less-volatile of the two gases acts to enhance the absorption of the more-volatile gas, while the more-volatile gas inhibits the absorption of the less-volatile gas. This general behaviour is also predicted in mixtures containing...... present during ethylene polymerisation in the gas-phase reactor (GPR) process. The two approaches are validated using experimental binary-mixture data for gas absorbed in PE, and predictions are made for mixtures of more components. For most cases studied both SAFT versions perform equally well...... more gases, such as typical reactor mixtures. The magnitude of the effect may vary considerably, depending on the relative proximity of the gas-mixture saturation pressure to the reactor pressure; for example it is predicted that the absorption of ethylene may be approximately doubled if diluent gases...

  2. Use of reactive gases with broad-beam radio frequency ion sources for industrial applications

    International Nuclear Information System (INIS)

    Schneider, St.; Jolly, T.W.; Kohlstedt, H.; Waser, R.

    2004-01-01

    Broad-beam ion sources are used for a number of important industrial etching and deposition applications, and the use of inductively coupled plasmas has greatly increased the feasibility of using beams of reactive gases, especially of chlorine and oxygen, but also of CO, CO 2 , CF 4 , CHF 3 , SF 6 , etc. In order to gain more understanding of the factors that affect the composition of beams of these gases, we have used a Hiden energy-dispersive quadrupole mass spectrometer to analyze the flux of ions and energetic particles produced by an Oxford Instruments 15 cm rf ion source. For all of the above gases, we have analyzed the effects of changing the operating conditions on the composition of the ion beam, and the fractional production of multiply charged ions; on the plasma potential (and the consequential divergence of the ion beam) and on the spread in energy of the ion beam. We discuss how these factors influence the correct use of the ion source in etching applications with these gases. It is important that the design of the ion source should be optimized for the process gases that are used. The source was originally optimized for use on argon. We discuss the effect of the design on the source's performance with the different gases, and we consider whether design changes would be appropriate for optimum performance on different gases

  3. Processes to remove acid forming gases from exhaust gases

    Science.gov (United States)

    Chang, S.G.

    1994-09-20

    The present invention relates to a process for reducing the concentration of NO in a gas, which process comprises: (A) contacting a gas sample containing NO with a gaseous oxidizing agent to oxidize the NO to NO[sub 2]; (B) contacting the gas sample of step (A) comprising NO[sub 2] with an aqueous reagent of bisulfite/sulfite and a compound selected from urea, sulfamic acid, hydrazinium ion, hydrazoic acid, nitroaniline, sulfanilamide, sulfanilic acid, mercaptopropanoic acid, mercaptosuccinic acid, cysteine or combinations thereof at between about 0 and 100 C at a pH of between about 1 and 7 for between about 0.01 and 60 sec; and (C) optionally contacting the reaction product of step (A) with conventional chemical reagents to reduce the concentrations of the organic products of the reaction in step (B) to environmentally acceptable levels. Urea or sulfamic acid are preferred, especially sulfamic acid, and step (C) is not necessary or performed. 16 figs.

  4. Iterative Estimation in Turbo Equalization Process

    Directory of Open Access Journals (Sweden)

    MORGOS Lucian

    2014-05-01

    Full Text Available This paper presents the iterative estimation in turbo equalization process. Turbo equalization is the process of reception in which equalization and decoding are done together, not as separate processes. For the equalizer to work properly, it must receive before equalization accurate information about the value of the channel impulse response. This estimation of channel impulse response is done by transmission of a training sequence known at reception. Knowing both the transmitted and received sequence, it can be calculated estimated value of the estimated the channel impulse response using one of the well-known estimation algorithms. The estimated value can be also iterative recalculated based on the sequence data available at the output of the channel and estimated sequence data coming from turbo equalizer output, thereby refining the obtained results.

  5. The Uneasy Marriage between Law and Equality

    Directory of Open Access Journals (Sweden)

    Pauline C. Westerman

    2015-02-01

    Full Text Available There are two ways in which the social ideal of equality has found expression in the law: in the principle of equal treatment and in the principle of non-discrimination. In this article the meaning of these two legal principles is analysed, in order to answer the question to what extent they can be said to contribute to equality in the sense of an equal distribution of collective resources. It is argued that whereas the first just requires decision-making to be rule-based, the second principle demands that rules should be based on sound categorical distinctions. Neither of the two can, however, sensibly be linked to equality as equal distribution. The article concludes that the only way to establish such a link is by adding to the principle of non-discrimination “financial resources” as a suspect ground.

  6. Telemedicine - a scientometric and density equalizing analysis.

    Science.gov (United States)

    Groneberg, David A; Rahimian, Shaghayegh; Bundschuh, Matthias; Schwarzer, Mario; Gerber, Alexander; Kloft, Beatrix

    2015-01-01

    As a result of the various telemedicine projects in the past years a large number of studies were recently published in this field. However, a precise bibliometric analysis of telemedicine publications does not exist so far. The present study was conducted to establish a data base of the existing approaches. Density-equalizing algorithms were used and data was retrieved from the Thomson Reuters database Web of Science. During the period from 1900 to 2006 a number of 3290 filed items were connected to telemedicine, with the first being published in 1964. The studies originate from 101 countries, with the USA, Great Britain and Canada being the most productive suppliers participating in 56.08 % of all published items. Analyzing the average citation per item for countries with more than 10 publications, Ireland ranked first (10.19/item), New Zealand ranked second (9.5/item) followed by Finland (9.04/item). The citation rate can be assumed as an indicator for research quality. The ten most productive journals include three journals with the main focus telemedicine and another five with the main focus "Information/Informatics". In all subject categories examined for published items related to telemedicine, "Health Care Sciences & Services" ranked first by far. More than 36 % of all publications are assigned to this category, followed by "Medical Informatics" with 9.72 % and "Medicine, General & Internal" with 8.84 % of all publications. In summary it can be concluded that the data shows clearly a strong increase in research productivity. Using science citation analysis it can be assumed that there is a large rise in the interest in telemedicine studies.

  7. Gender Equality and the Corporate Sector

    OpenAIRE

    Lisa Warth

    2009-01-01

    This paper focuses on how the commitment of businesses to promote gender equality within their organisations can be strengthened. A dual approach of encouraging voluntary measures and corporate social responsibility for gender equality on the one hand, and regulating and enforcing change through legislative reforms on the other hand are reviewed, focusing mainly on the European region. There are arguments for a business case for gender equality in terms of better financial performance and com...

  8. Scandinavian Approaches to Gender Equality in Academia

    DEFF Research Database (Denmark)

    Nielsen, Mathias Wullum

    2017-01-01

    This study investigates how Denmark, Norway, and Sweden approach issues of gender equality in research differently. Based on a comparative document analysis of gender equality activities in six Scandinavian universities, together with an examination of the legislative and political frameworks...... surrounding these activities, the article provides new insights into the respective strategies for governing and promoting the advancement of women researchers. In doing so, it exposes some interesting disparities among the cases and shows how Norwegian and Swedish gender equality activities revolve around...

  9. Gender Equality, Citizenship and Human Rights

    DEFF Research Database (Denmark)

    reflect upon challenges to gender equality, citizenship, and human rights in their respective societies; it combines theoretical insights with empirically grounded studies. The volume contextualises feminist political theory in China and the Nordic countries and subsequently puts it into a global......This comparative volume examines the ways in which current controversies and political, legal, and social struggles for gender equality raise conceptual questions and challenge our thinking on political theories of equality, citizenship and human rights. Bringing together scholars and activists who...

  10. Turbo Equalization Using Partial Gaussian Approximation

    DEFF Research Database (Denmark)

    Zhang, Chuanzong; Wang, Zhongyong; Manchón, Carles Navarro

    2016-01-01

    This letter deals with turbo equalization for coded data transmission over intersymbol interference (ISI) channels. We propose a message-passing algorithm that uses the expectation propagation rule to convert messages passed from the demodulator and decoder to the equalizer and computes messages...... returned by the equalizer by using a partial Gaussian approximation (PGA). We exploit the specific structure of the ISI channel model to compute the latter messages from the beliefs obtained using a Kalman smoother/equalizer. Doing so leads to a significant complexity reduction compared to the initial PGA...

  11. Equal rights as the center of democratization

    OpenAIRE

    Alan Gilbert

    2010-01-01

    Well-stated modern political or democratic theory is rights-based. Meaningful democracy rests as a precondition on the equal rights of citizens. This idea stems from Rousseau’s distinction between a general will*one which is impersonal and tends toward equality, that is, the equal basic rights of citizens*and a transitory will of all. For instance, absent equal basic rights, one might imagine a possible world in which what I have called a self-undermining series of wills of all, or the ...

  12. Measurements of waste tank passive ventilation rates using tracer gases

    International Nuclear Information System (INIS)

    Huckaby, J.L.; Olsen, K.B.; Sklarew, D.S.; Evans, J.C.; Remund, K.M.

    1997-09-01

    This report presents the results of ventilation rate studies of eight passively ventilated high-level radioactive waste tanks using tracer gases. Head space ventilation rates were determined for Tanks A-101, AX-102, AX-103, BY-105, C-107, S-102, U-103, and U-105 using sulfur hexafluoride (SF 6 ) and/or helium (He) as tracer gases. Passive ventilation rates are needed for the resolution of several key safety issues. These safety issues are associated with the rates of flammable gas production and ventilation, the rates at which organic salt-nitrate salt mixtures dry out, and the estimation of organic solvent waste surface areas. This tracer gas study involves injecting a tracer gas into the tank headspace and measuring its concentration at different times to establish the rate at which the tracer is removed by ventilation. Tracer gas injection and sample collection were performed by SGN Eurisys Service Corporation and/or Lockheed Martin Hanford Corporation, Characterization Project Operations. Headspace samples were analyzed for He and SF 6 by Pacific Northwest National Laboratory (PNNL). The tracer gas method was first demonstrated on Tank S-102. Tests were conducted on Tank S-102 to verify that the tracer gas was uniformly distributed throughout the tank headspace before baseline samples were collected, and that mixing was sufficiently vigorous to maintain an approximately uniform distribution of tracer gas in the headspace during the course of the study. Headspace samples, collected from a location about 4 in away from the injection point and 15, 30, and 60 minutes after the injection of He and SF 6 , indicated that both tracer gases were rapidly mixed. The samples were found to have the same concentration of tracer gases after 1 hour as after 24 hours, suggesting that mixing of the tracer gas was essentially complete within 1 hour

  13. Stakes and impact of non conventional gases on the market energy

    International Nuclear Information System (INIS)

    2010-04-01

    This article presents the content of a market study which aimed at describing the boom of the market of non conventional gases in the USA (definition, reasons for quick development, competitiveness, growth perspectives), at understanding how and why theses gases are the new playground of oil and gas companies (actors in presence, positions held by independent operators, ambitions of major companies, question of the development of a European sector of non conventional gases), and at anticipating the changes of the energy production market (the emergence of this market in the USA is an acceleration and imbalance factor of the world market of natural gas, and non conventional gases may change the deal on energy markets)

  14. Study of greenhouse gases emission factor for nuclear power chain of China

    International Nuclear Information System (INIS)

    Ma Zhonghai; Pan Ziqiang; Xie Jianlun; Xiu Binglin

    2001-01-01

    The Greenhouse Gases Emission Factor (GGEF) for nuclear power chain of China is calculated based on Life Cycle Analysis method and the definition of full energy chain. There is no greenhouse gases released directly from nuclear power plant. The greenhouse gases emission from nuclear power plant is mainly from coal-fired electricity supply to nuclear power plant for its normal operation and the production of construction materials those are used in the nuclear power plant. The total GGEF of nuclear power chain in China is 13.71 g-co 2 /kWh. It is necessary to regulate un-rational power source mix and to use the energy sources in rational way for reducing the greenhouse gas effect. Nuclear power for electricity generation is one of effective ways to reduce greenhouse gases emission and retard the greenhouse effect

  15. Soldagem TIG de elevada produtividade: influência dos gases de proteção na velocidade limite para formação de defeitos High productivity TIG welding: influence of shielding gases on the limit speed for defect formation

    Directory of Open Access Journals (Sweden)

    Mateus Barancelli Schwedersky

    2011-12-01

    objective of this paper is to provide support for a new analysis of the defects formation in high productivity TIG welding, since the theory based on the arc pressure does not fully contemplate what has been being observed in practice. In this work, tests were performed with different current levels using argon, helium and argon-hydrogen mixtures as shielding gas. The results show that, for the same average current, as the H2 content was increased, there were also gradual increases of melted area and melting efficiency. It was possible to show evidences that the mechanism of defects formation depends not only on the arc pressure, but on the balance between arc pressure and the quantity of molten metal, which depend on the melting efficiency provided by the used gas.

  16. Comment on "Synergistic co-digestion of solid-organic-waste and municipal-sewage-sludge: 1 plus 1 equals more than 2 in terms of biogas production and solids reduction" [Water Research 87, 416-423].

    Science.gov (United States)

    Insam, Heribert; Markt, Rudolf

    2016-05-15

    Co-digestion of organic waste and sewage sludge enhances biogas production and reduces the mass of remaining solids. This phenomenon of enhanced organic matter decomposition by adding labile substrate is known from other habitats like soils and sediments where it is called priming effect. It is thus suggested to adopt the term priming effect also in environmental biotechnology, and in particular for biomethanisation of wastewater sludges by the addition of energy-rich co-substrates. Copyright © 2016 Elsevier Ltd. All rights reserved.

  17. Measurements of 4 Atmospheric Trace Gases Outside Homes Adjacent to a Multiwell Pad During Drilling, Hydraulic Fracturing, and Production Phases, Using Low-Cost Sensors and Artificial Neural Network Quantification Techniques

    Science.gov (United States)

    Casey, J. G.; Ilie, A. M. C.; Coffey, E.; Collier-Oxandale, A. M.; Hannigan, M.; Vaccaro, C.

    2017-12-01

    In Colorado and elsewhere in North America, the oil and gas production industry has been growing alongside and in the midst of increasing urban and rural populations. These coinciding trends have resulted in a growing number of people living in close proximity to petroleum production and processing activities, leading to potential public health impacts. Combustion-related emissions from heavy-duty diesel vehicle traffic, generators, compressors, and production stream flaring can potentially lead to locally enhanced levels of nitrogen oxides (NOx), carbon monoxide (CO), and carbon dioxide (CO2). Venting and fugitive emissions of production stream constituents can potentially lead to locally enhanced levels of methane (CH4) and volatile organic compounds (VOCs), some of which (like benzene) are known carcinogens. NOx and VOC emissions can also potentially increase local ozone (O3) production. After learning of a large new multiwell pad on the outskirts of Greeley, Colorado, we were able to quickly mobilize portable air quality monitors outfitted with low-cost gas sensors that respond to CH4, CO2, CO, and O3. The air quality monitors were installed outside homes adjacent to the new multiwell pad several weeks prior to the first spud date. An anemometer was also installed outside one of the homes in order to monitor wind speed and direction. Measurements continued during drilling, hydraulic fracturing, and production phases. The sensors were periodically collocated with reference instruments at a nearby regulatory air quality monitoring site towards calibration via field normalization and validation. Artificial Neural Networks were employed to map sensor signals to trace gas mole fractions during collocation periods. We present measurements of CH4, CO2, CO, and O3 in context with wellpad activities and local meteorology. CO and O3 observations are presented in context with regional measurements and National Ambient Air Quality Standards for each. Wind speed and

  18. Diversity, equal opportunities and human rights.

    Science.gov (United States)

    McKimm, Judy; Webb, Helen

    2010-08-01

    Equality and diversity are central to education and health services, in terms of both employment and service delivery. Clinical teachers need to be able to support students and trainees around equality issues, have the confidence to challenge discriminatory practice and provide an inclusive and safe learning and teaching environment.

  19. The Many Faces of Equal Opportunity

    Science.gov (United States)

    Temkin, Larry S.

    2016-01-01

    The ideal of equality of opportunity plays an important role in contemporary social and political discourse, and it is one of the few ideals which most people, across the political spectrum, accept. In this article, I argue that the seemingly widespread agreement about the value of equal opportunity is more apparent than real. I distinguish…

  20. Some equalities and inequalities for fusion frames

    OpenAIRE

    Guo, Qianping; Leng, Jinsong; Li, Houbiao

    2016-01-01

    Fusion frames have some properties similar to those of frames in Hilbert spaces, but not all of their properties are similar. Some authors have established some equalities and inequalities for conventional frames. In this paper, we give some equalities and inequalities for fusion frames. Our results generalize and improve the remarkable results which have been obtained by Balan, Casazza and G?vruta etc.

  1. Detroit's Fight for Equal Educational Opportunity.

    Science.gov (United States)

    Zwerdling, A. L.

    To meet the challenge of equal educational opportunity, current methods of public school finance must be revised. The present financial system, based on State equalization of local property tax valuation, is inequitable since it results in many school districts, particularly those in large cities, having inadequate resources to meet extraordinary…

  2. Vocational Education and Equality of Opportunity.

    Science.gov (United States)

    Horowitz, Benjamin; Feinberg, Walter

    1990-01-01

    Examines the concepts of equality of opportunity and equality of educational opportunity and their relationship to vocational education. Traces the history of vocational education. Delineates the distinction between training and education as enumerated in Aristotelian philosophy. Discusses the role vocational education can play in the educative…

  3. The uneasy marriage between Law and Equality

    NARCIS (Netherlands)

    Westerman, Pauline C.

    2015-01-01

    There are two ways in which the social ideal of equality has found expression in the law: in the principle of equal treatment and in the principle of non-discrimination. In this article the meaning of these two legal principles is analysed, in order to answer the question to what extent they can be

  4. 78 FR 53231 - Women's Equality Day, 2013

    Science.gov (United States)

    2013-08-28

    ... Vol. 78 Wednesday, No. 167 August 28, 2013 Part IV The President Proclamation 9003--Women's Equality Day, 2013 Proclamation 9004--50th Anniversary of the March on Washington for Jobs and Freedom #0... 9003 of August 23, 2013 Women's Equality Day, 2013 By the President of the United States of America A...

  5. 34 CFR 108.6 - Equal access.

    Science.gov (United States)

    2010-07-01

    ... 34 Education 1 2010-07-01 2010-07-01 false Equal access. 108.6 Section 108.6 Education Regulations of the Offices of the Department of Education OFFICE FOR CIVIL RIGHTS, DEPARTMENT OF EDUCATION EQUAL... limited to, school-related means of communication, such as bulletin board notices and literature...

  6. Bose-Einstein condensation of atomic gases

    International Nuclear Information System (INIS)

    Anglin, J. R.; Ketterle, W.

    2003-01-01

    The early experiments on Bose-Einstein condensation in dilute atomic gases accomplished three longstanding goals. First, cooling of neutral atoms into their motional state, thus subjecting them to ultimate control, limited only by Heisenberg uncertainty relation. Second, creation of a coherent sample of atoms, in which all occupy the same quantum states, and the realization of atom lasers - devices that output coherent matter waves. And third, creation of gaseous quantum fluid, with properties that are different from the quantum liquids helium-3 and helium-4. The field of Bose-Einstein condensation of atomic gases has continued to progress rapidly, driven by the combination of new experimental techniques and theoretical advances. The family of quantum degenerate gases has grown, and now includes metastable and fermionic atoms. condensates have become an ultralow-temperature laboratory for atom optics, collisional physics and many-body physics, encompassing phonons, superfluidity, quantized vortices, Josephson junctions and quantum phase transitions. (author)

  7. Density Fluctuations in Uniform Quantum Gases

    International Nuclear Information System (INIS)

    Bosse, J.; Pathak, K. N.; Singh, G. S.

    2011-01-01

    Analytical expressions are given for the static structure factor S(k) and the pair correlation function g(r) for uniform ideal Bose-Einstein and Fermi-Dirac gases for all temperatures. In the vicinity of Bose Einstein condensation (BEC) temperature, g(r) becomes long ranged and remains so in the condensed phase. In the dilute gas limit, g(r) of bosons and fermions do not coincide with Maxwell-Boltzmann gas but exhibit bunching and anti-bunching effect respectively. The width of these functions depends on the temperature and is scaled as √(inverse atomic mass). Our numerical results provide the precise quantitative values of suppression/increase (antibunching and bunching) of the density fluctuations at small distances in ideal quantum gases in qualitative agreement with the experimental observation for almost non-trapped dilute gases.

  8. Method of processing radioactive rare gase

    International Nuclear Information System (INIS)

    Tagusagawa, Atsushi; Tuda, Kazuaki.

    1988-01-01

    Purpose: To obtain a safety processing method without using mechanical pumps or pressure-proof containers and, accordingly, with no risk for the leakage of radioactive rare gas. Method: A container filled with zeolige is inserted with a cover being opened into an autoclave. Meanwhile, krypton-containing gases are supplied to an adsorption tower filled with adsorbents, cooled, adsorbed and then heated to desorb adsorbed krypton. The krypton-containing gases are introduced due to the pressure difference to the autoclave thereby causing krypton to adsorb at ambient temperature to zeolite. Then, the inside of the autoclave is heated to desorb krypton and adsorbed moistures from zeolite and the pressure is elevated. After sending the gases under pressure to the adsorption tower, the zeolite-filled container is taken out from the autoclave, tightly closed and then transferred to a predetermined site. (Takahashi, M.)

  9. GREENHOUSE GASES AND MEANS OF PREVENTION

    Directory of Open Access Journals (Sweden)

    Dušica Stojanović

    2013-09-01

    Full Text Available The greenhouse effect can be defined as the consequence of increased heating of the Earth's surface, as well as the lower atmosphere by carbon dioxide, water vapor, and other trace amounts gases. It is well-known that human industrial activities have released large amounts of greenhouse gases in the atmosphere, about 900 billion tons of carbon dioxide, and it is estimated that up to 450 billion are still in the atmosphere. In comparison to greenhouse gases water vapor is one of the greatest contributors to the greenhouse effect on Earth. Many projects, as does the PURGE project, have tendences to build on the already conducted research and to quantify the positive and negative impacts on health and wellbeing of the population with greenhouse gas reduction strategies that are curently being implemented and should be increasingly applied in various sectors and urban areas, having offices in Europe, China and India.

  10. Dark lump excitations in superfluid Fermi gases

    Science.gov (United States)

    Xu, Yan-Xia; Duan, Wen-Shan

    2012-11-01

    We study the linear and nonlinear properties of two-dimensional matter-wave pulses in disk-shaped superfluid Fermi gases. A Kadomtsev—Petviashvili I (KPI) solitary wave has been realized for superfluid Fermi gases in the limited cases of Bardeen—Cooper—Schrieffer (BCS) regime, Bose—Einstein condensate (BEC) regime, and unitarity regime. One-lump solution as well as one-line soliton solutions for the KPI equation are obtained, and two-line soliton solutions with the same amplitude are also studied in the limited cases. The dependence of the lump propagating velocity and the sound speed of two-dimensional superfluid Fermi gases on the interaction parameter are investigated for the limited cases of BEC and unitarity.

  11. Dark lump excitations in superfluid Fermi gases

    International Nuclear Information System (INIS)

    Xu Yan-Xia; Duan Wen-Shan

    2012-01-01

    We study the linear and nonlinear properties of two-dimensional matter-wave pulses in disk-shaped superfluid Fermi gases. A Kadomtsev—Petviashvili I (KPI) solitary wave has been realized for superfluid Fermi gases in the limited cases of Bardeen—Cooper—Schrieffer (BCS) regime, Bose—Einstein condensate (BEC) regime, and unitarity regime. One-lump solution as well as one-line soliton solutions for the KPI equation are obtained, and two-line soliton solutions with the same amplitude are also studied in the limited cases. The dependence of the lump propagating velocity and the sound speed of two-dimensional superfluid Fermi gases on the interaction parameter are investigated for the limited cases of BEC and unitarity

  12. Process for gasifying fuels with the recovery of rich gases

    Energy Technology Data Exchange (ETDEWEB)

    Jahns, F

    1921-04-10

    A process for gasifying fuels with recovery of water-free, rich-in-tar gases in a ring-gas-producer characterized by hot-gas-stream arising from the gasification bed of a fresh chamber in the known way is divided. One part is conducted through an old chamber, the other part is led first during the drying through the fresh fuel and with the received water-vapor also through the old chamber and then during the carbonization with the carbonization products is led to the carbonization-gas conduit.

  13. Investigating tunable KRb gases and Bose-Einstein condensates

    DEFF Research Database (Denmark)

    Jørgensen, Nils Byg

    2015-01-01

    We present the production of dual-species Bose-Einstein condensates of 39K and 87Rb with tunable interactions. A dark spontaneous force optical trap was used for 87Rb to reduce the losses in 39K originating from light-assisted collisions in the magneto optical trapping phase. Using sympathetic...... for dual-species condensates with tunable interactions. Employing the dual-species condensates, the miscible to immiscible phase transition was investigated. By applying an empirical model, the transition was used to determine the background scattering length. Two species quantum gases with tunable...

  14. Process of producing carbonaceous materials; reaction with hydrogen gases

    Energy Technology Data Exchange (ETDEWEB)

    1933-01-13

    A process is described for the production of valuable hydrocarbons by treating distillable carbonaceous materials together with hydrogen gases, under pressure and in contact with catalysts, the process consisting in adding to the original materials, first or during treatment, organic sulfonic acids together with metals from the fourth or eighth groups of the periodic system or a combination of these, or organic carbosilicic acids or inorganic acids containing oxides of sulfur or nitrogen or the anhydrides of these inorganic acids or variation of these compounds.

  15. Justifications of Gender Equality in Academia

    DEFF Research Database (Denmark)

    Nielsen, Mathias Wullum

    2014-01-01

    and Swedish universities juxtapose arguments of utility, innovation, justice, and anti-discrimination, the Danish universities primarily refer to aspects of competitiveness, utility, and innovation when justifying activities on gender equality. The article suggests that the lack of justice......Gender equality in academia is often perceived as receiving more emphasis in Norway and Sweden than in Denmark. But how do the public research institutions in the three countries approach issues of gender equality differently? This study investigates how activities related to gender equality...... are articulated and justified in the policy statements of six Scandinavian universities. The analysis reveals some interesting disparities between the countries. In short, the Danish universities seem to be reluctant to deal with gender equality on the basis of rights-based assumptions. While the Norwegian...

  16. Investigations on the influence of NO/sub 2/ and SO/sub 2/ as well as a combination of the two gases on the production of precipitating antibodies in guinea pigs

    Energy Technology Data Exchange (ETDEWEB)

    Antweiler, K; Kompch, K H; Brockhaus, A

    1975-01-01

    The influence of nitrogen dioxide and sulfur dioxide, or a combination of the two, on the production pf precipitating antibodies was studied in guinea pigs. The gas concentration was 10 mg/cu m. Continuous exposure began 3 days before sensitization and lasted up to the testing date. Sensitization was done subcutaneously and intramuscularly with fresh chicken albumen plus complete Freund's adjuvant. Production of precipitating antibodies was tested by the double diffusion method of Ouchterlony. Total protein content was measured and an immunoelectrophoretic separation of the protein fractions was performed with polyvalent anti-guinea pig serum. The statistical evaluation of the results yielded no support for an interaction of NO/sub 2/ and SO/sub 2/, or their combination, in the concentration used on the formation of precipitating bodies.

  17. Influences of incubation temperature and various saccharides on the production of organic acids and gases by gut microbes of rainbow trout Oncorhynchus mykiss in a micro-scale batch culture.

    Science.gov (United States)

    Kihara, M; Sakata, T

    2001-08-01

    We studied the influence of incubation temperature and additional saccharides on the metabolism of hindgut microbes of the rainbow trout Oncorhynchus mykiss in a 50 microl-scale batch culture system. Intestinal contents of rainbow trout reared at 15 degrees C were incubated with glucose, lactosucrose, sodium alginate or colloidal chitin (each 10 g/l) at 15 degrees C or 25 degrees C for 12 h. Levels of organic acids at 0 h and 12 h of incubation were quantified with HPLC. We also monitored gas release from these cultures during incubation. The main product was iso-butyric acid, except for the cultures with colloidal chitin where no net production of organic acids was observed. We detected higher levels of iso-butyric acid in cultures with lactosucrose than in the other cultures. Net production of this acid was less in cultures with colloidal chitin than in blank cultures. The volume of released gas was larger when incubated at 25 degrees C than at 15 degrees C. Cultures with colloidal chitin released more gas than blank cultures when they were incubated at 15 degrees C. Cultures with sodium alginate released less gas than blank cultures irrespective of incubation temperature. These results indicate that the hindgut microbes of this carnivorous fish mainly produce branched-chain fatty acids, very likely by microbial digestion of nitrogenous materials rather than saccharides. However, additional saccharides affected production of branched-chain fatty acids. The influence of incubation temperature in the present study also suggested that the environmental temperature of host fish should affect microbial digestion in the fish gut.

  18. Emission of greenhouse gases from Danish agriculture

    International Nuclear Information System (INIS)

    Olesen, J.E.; Petersen, S.O.; Fenhann, J.V.; Andersen, J.M.; Jacobsen, B.H.

    2001-01-01

    The basis for inventories of methane and nitrous oxide emissions from Danish agriculture has been reviewed and re-evaluated. This has resulted in revised estimates for most of the sources. The revised estimates predict a decline in emissions of methane and nitrous oxide from Danish agriculture from 14.1 Mt CO 2 equivalents in 1990 to 10.6 Mt CO 2 equivalents in 2010. The new estimates give lower emission of methane (4% for 1990 and 15% for 2010), and almost unchanged emissions for nitrous oxide (1% smaller for 1990 and 3% higher for 2010) compared with previous estimates. Since nitrous oxide is a more potent greenhouse gas than methane, the revised estimates are almost identical to the old ones for 2010 when expressed as CO 2 equivalents. The old and the revised estimates give a decline in emissions in CO 2 equivalents from 1990 to 2010 of 23 and 24% respectively. For 1999 the estimated emissions of methane constituted 29% of the total emission of CO 2 equivalents in the form of methane and nitrous oxide. The contribution of nitrous oxide derived from nitrogen turnover in the field was almost 47% of the emission. All emission sources are estimated as the product of an activity and an emission factor. The estimates are associated with uncertainties in both the activities and the emission factors. The uncertainty in the activity data is rather small for most of the items, but probably somewhat larger for N fixation, grazing, and cultivation of organic soils and N leaching. The largest uncertainty is associated with the amount of crop residues, which also constitutes one of the largest contributions to the total greenhouse gas emissions. Emission factors for methane are relatively certain, whereas there are large uncertainties associated with the emission factors for nitrous oxide. This is partly due to the fact that the emission factors are based on emission data representing many different climatic conditions, soil types and crops. The large uncertainty in the

  19. Process for recovery of sulfur from acid gases

    Science.gov (United States)

    Towler, Gavin P.; Lynn, Scott

    1995-01-01

    Elemental sulfur is recovered from the H.sub.2 S present in gases derived from fossil fuels by heating the H.sub.2 S with CO.sub.2 in a high-temperature reactor in the presence of a catalyst selected as one which enhances the thermal dissociation of H.sub.2 S to H.sub.2 and S.sub.2. The equilibrium of the thermal decomposition of H.sub.2 S is shifted by the equilibration of the water-gas-shift reaction so as to favor elemental sulfur formation. The primary products of the overall reaction are S.sub.2, CO, H.sub.2 and H.sub.2 O. Small amounts of COS, SO.sub.2 and CS.sub.2 may also form. Rapid quenching of the reaction mixture results in a substantial increase in the efficiency of the conversion of H.sub.2 S to elemental sulfur. Plant economy is further advanced by treating the product gases to remove byproduct carbonyl sulfide by hydrolysis, which converts the COS back to CO.sub.2 and H.sub.2 S. Unreacted CO.sub.2 and H.sub.2 S are removed from the product gas and recycled to the reactor, leaving a gas consisting chiefly of H.sub.2 and CO, which has value either as a fuel or as a chemical feedstock and recovers the hydrogen value from the H.sub.2 S.

  20. Gases and vacua handbook of vacuum physics

    CERN Document Server

    Beck, A H

    2013-01-01

    Handbook of Vacuum Physics, Volume 1: Gases and Vacua presents three major topics, which are the fourth to sixth parts of this volume. These topics are the remarks on units of physical quantities; kinetic theory of gases and gaseous flow; and theory of vacuum diffusion pumps. The first topic aims to present concisely the significance of units of physical quantities, catering the need and interest of those who take measurements and make calculations in different fields of vacuum sciences. The technique and applications of this particular topic are also provided. The second main topic focuses sp

  1. Measuring Viscosities of Gases at Atmospheric Pressure

    Science.gov (United States)

    Singh, Jag J.; Mall, Gerald H.; Hoshang, Chegini

    1987-01-01

    Variant of general capillary method for measuring viscosities of unknown gases based on use of thermal mass-flowmeter section for direct measurement of pressure drops. In technique, flowmeter serves dual role, providing data for determining volume flow rates and serving as well-characterized capillary-tube section for measurement of differential pressures across it. New method simple, sensitive, and adaptable for absolute or relative viscosity measurements of low-pressure gases. Suited for very complex hydrocarbon mixtures where limitations of classical theory and compositional errors make theoretical calculations less reliable.

  2. Origins of geothermal gases at Yellowstone

    Science.gov (United States)

    Lowenstern, Jacob B.; Bergfeld, Deborah; Evans, William C.; Hunt, Andrew G.

    2015-01-01

    Gas emissions at the Yellowstone Plateau Volcanic Field (YPVF) reflect open-system mixing of gas species originating from diverse rock types, magmas, and crustal fluids, all combined in varying proportions at different thermal areas. Gases are not necessarily in chemical equilibrium with the waters through which they vent, especially in acid sulfate terrain where bubbles stream through stagnant acid water. Gases in adjacent thermal areas often can be differentiated by isotopic and gas ratios, and cannot be tied to one another solely by shallow processes such as boiling-induced fractionation of a parent liquid. Instead, they inherit unique gas ratios (e.g., CH4/He) from the dominant rock reservoirs where they originate, some of which underlie the Quaternary volcanic rocks. Steam/gas ratios (essentially H2O/CO2) of Yellowstone fumaroles correlate with Ar/He and N2/CO2, strongly suggesting that H2O/CO2 is controlled by addition of steam boiled from water rich in atmospheric gases. Moreover, H2O/CO2 varies systematically with geographic location, such that boiling is more enhanced in some areas than others. The δ13C and 3He/CO2 of gases reflect a dominant mantle origin for CO2 in Yellowstone gas. The mantle signature is most evident at Mud Volcano, which hosts gases with the lowest H2O/CO2, lowest CH4 concentrations and highest He isotope ratios (~16Ra), consistent with either a young subsurface intrusion or less input of crustal and meteoric gas than any other location at Yellowstone. Across the YPVF, He isotope ratios (3He/4He) inversely vary with He concentrations, and reflect varied amounts of long- stored, radiogenic He added to the magmatic endmember within the crust. Similarly, addition of CH4 from organic-rich sediments is common in the eastern thermal areas at Yellowstone. Overall, Yellowstone gases reflect addition of deep, high-temperature magmatic gas (CO2-rich), lower-temperatures crustal gases (4He- and CH4-bearing), and those gases (N2, Ne, Ar) added

  3. Itinerant Ferromagnetism in Ultracold Fermi Gases

    DEFF Research Database (Denmark)

    Heiselberg, Henning

    2012-01-01

    Itinerant ferromagnetism in cold Fermi gases with repulsive interactions is studied applying the Jastrow-Slater approximation generalized to finite polarization and temperature. For two components at zero temperature a second order transition is found at akF ≃ 0.90 compatible with QMC. Thermodyna......Itinerant ferromagnetism in cold Fermi gases with repulsive interactions is studied applying the Jastrow-Slater approximation generalized to finite polarization and temperature. For two components at zero temperature a second order transition is found at akF ≃ 0.90 compatible with QMC...

  4. Flammability characteristics of combustible gases and vapors

    Energy Technology Data Exchange (ETDEWEB)

    Zabetakis, M. G. [Bureau of Mines, Pittsburgh, PA (United States)

    1964-05-01

    This is a summary of the available limit of flammability, autoignition and burning-rate data for more than 200 combustible gases and vapors in air and other oxidants, as well as of empirical rules and graphs that can be used to predict similar data for thousands of other combustibles under a variety of environmental conditions. Spec$c data are presented on the paraffinic, unsaturated, aromatic, and alicyclic hydrocarbons, alcohols, ethers, aldehydes, ketones, and sulfur compounds, and an assortment of fuels, fuel blends, hydraulic fluids, engine oils, and miscellaneous combustible gases and vapors.

  5. Investigations into electrical discharges in gases

    CERN Document Server

    Klyarfel'D, B N

    2013-01-01

    Investigations into Electrical Discharges in Gases is a compilation of scientific articles that covers the advances in the investigation of the fundamental processes occurring in electrical discharges in gases and vapors. The book details the different aspects of the whole life cycle of an arc, which include the initiation of a discharge, its transition into an arc, the lateral spread of the arc column, and the recovery of electric strength after extinction of an arc. The text also discusses the methods for the dynamic measurement of vapor density in the vicinity of electrical discharges, alon

  6. Nanoclusters and Microparticles in Gases and Vapors

    CERN Document Server

    Smirnov, Boris M

    2012-01-01

    Research of processes involving Nanoclusters and Microparticleshas been developing fastin many fields of rescent research, in particular in materials science. To stay at the cutting edge of this development, a sound understanding of the processes is needed. In this work, several processes involving small particles are described, such as transport processes in gases, charging of small particles in gases, chemical processes, atom attachment and quenching of excited atomic particles on surfaces, nucleation, coagulation, coalescence and growth processes for particles and aggregates. This work pres

  7. Indoor air pollution caused by geothermal gases

    International Nuclear Information System (INIS)

    Durand, Michael

    2006-01-01

    This paper discusses the little-known but potentially serious indoor air quality problems that may occur where buildings are constructed on geothermal ground. The main problems are related to seepage of carbon dioxide, hydrogen sulphide, radon and other gases from soil cavities directly into indoor air through perforations in the structure. These gases present a health hazard, and hydrogen sulphide, which is particularly corrosive, may cause problems electrical and electronic systems. Counter-measures are not always effective, so developments in such areas should only be undertaken with a clear understanding of site-specific issues and their possible solutions. (author)

  8. Ultracold Dipolar Gases in Optical Lattices

    OpenAIRE

    Trefzger, C.; Menotti, C.; Capogrosso-Sansone, B.; Lewenstein, M.

    2011-01-01

    This tutorial is a theoretical work, in which we study the physics of ultra-cold dipolar bosonic gases in optical lattices. Such gases consist of bosonic atoms or molecules that interact via dipolar forces, and that are cooled below the quantum degeneracy temperature, typically in the nK range. When such a degenerate quantum gas is loaded into an optical lattice produced by standing waves of laser light, new kinds of physical phenomena occur. These systems realize then extended Hubbard-type m...

  9. Greenhouse gases from wastewater treatment — A review of modelling tools

    International Nuclear Information System (INIS)

    Mannina, Giorgio; Ekama, George; Caniani, Donatella; Cosenza, Alida; Esposito, Giovanni; Gori, Riccardo; Garrido-Baserba, Manel; Rosso, Diego; Olsson, Gustaf

    2016-01-01

    Nitrous oxide, carbon dioxide and methane are greenhouse gases (GHG) emitted from wastewater treatment that contribute to its carbon footprint. As a result of the increasing awareness of GHG emissions from wastewater treatment plants (WWTPs), new modelling, design, and operational tools have been developed to address and reduce GHG emissions at the plant-wide scale and beyond. This paper reviews the state-of-the-art and the recently developed tools used to understand and manage GHG emissions from WWTPs, and discusses open problems and research gaps. The literature review reveals that knowledge on the processes related to N_2O formation, especially due to autotrophic biomass, is still incomplete. The literature review shows also that a plant-wide modelling approach that includes GHG is the best option for the understanding how to reduce the carbon footprint of WWTPs. Indeed, several studies have confirmed that a wide vision of the WWPTs has to be considered in order to make them more sustainable as possible. Mechanistic dynamic models were demonstrated as the most comprehensive and reliable tools for GHG assessment. Very few plant-wide GHG modelling studies have been applied to real WWTPs due to the huge difficulties related to data availability and the model complexity. For further improvement in GHG plant-wide modelling and to favour its use at large real scale, knowledge of the mechanisms involved in GHG formation and release, and data acquisition must be enhanced. - Highlights: • The state of the art in GHG production/emission/modelling from WWTPs was outlined. • Detailed mechanisms of N_2O production by AOB are still not completely known. • N_2O modelling could be improved considering both AOB pathways contribution. • To improve protocols the regulatory framework among countries has to be equalized. • Plant-wide modelling can help modeller/engineer/operator to reduce GHG emissions.

  10. Greenhouse gases from wastewater treatment — A review of modelling tools

    Energy Technology Data Exchange (ETDEWEB)

    Mannina, Giorgio, E-mail: giorgio.mannina@unipa.it [Dipartimento di Ingegneria Civile, Ambientale, Aerospaziale, dei Materiali, Università di Palermo, Viale delle Scienze, 90100 Palermo (Italy); Ekama, George [Water Research Group, Department of Civil Engineering, University of Cape Town, Rondebosch, 7700 Cape (South Africa); Caniani, Donatella [Department of Engineering and Physics of the Environment, University of Basilicata, viale dell' Ateneo Lucano 10, 85100 Potenza (Italy); Cosenza, Alida [Dipartimento di Ingegneria Civile, Ambientale, Aerospaziale, dei Materiali, Università di Palermo, Viale delle Scienze, 90100 Palermo (Italy); Esposito, Giovanni [Department of Civil and Mechanical Engineering, University of Cassino and the Southern Lazio, Via Di Biasio, 43, 03043 Cassino, FR (Italy); Gori, Riccardo [Department of Civil and Environmental Engineering, University of Florence, Via Santa Marta 3, 50139 Florence (Italy); Garrido-Baserba, Manel [Department of Civil & Environmental Engineering, University of California, Irvine, CA 92697-2175 (United States); Rosso, Diego [Department of Civil & Environmental Engineering, University of California, Irvine, CA 92697-2175 (United States); Water-Energy Nexus Center, University of California, Irvine, CA 92697-2175 (United States); Olsson, Gustaf [Department of Industrial Electrical Engineering and Automation (IEA), Lund University, Box 118, SE-22100 Lund (Sweden)

    2016-05-01

    Nitrous oxide, carbon dioxide and methane are greenhouse gases (GHG) emitted from wastewater treatment that contribute to its carbon footprint. As a result of the increasing awareness of GHG emissions from wastewater treatment plants (WWTPs), new modelling, design, and operational tools have been developed to address and reduce GHG emissions at the plant-wide scale and beyond. This paper reviews the state-of-the-art and the recently developed tools used to understand and manage GHG emissions from WWTPs, and discusses open problems and research gaps. The literature review reveals that knowledge on the processes related to N{sub 2}O formation, especially due to autotrophic biomass, is still incomplete. The literature review shows also that a plant-wide modelling approach that includes GHG is the best option for the understanding how to reduce the carbon footprint of WWTPs. Indeed, several studies have confirmed that a wide vision of the WWPTs has to be considered in order to make them more sustainable as possible. Mechanistic dynamic models were demonstrated as the most comprehensive and reliable tools for GHG assessment. Very few plant-wide GHG modelling studies have been applied to real WWTPs due to the huge difficulties related to data availability and the model complexity. For further improvement in GHG plant-wide modelling and to favour its use at large real scale, knowledge of the mechanisms involved in GHG formation and release, and data acquisition must be enhanced. - Highlights: • The state of the art in GHG production/emission/modelling from WWTPs was outlined. • Detailed mechanisms of N{sub 2}O production by AOB are still not completely known. • N{sub 2}O modelling could be improved considering both AOB pathways contribution. • To improve protocols the regulatory framework among countries has to be equalized. • Plant-wide modelling can help modeller/engineer/operator to reduce GHG emissions.

  11. Method for rendering harmless sulfur dioxide-carrying gases and sulfur-carrying waste water from pyrolysis of oil shale

    Energy Technology Data Exchange (ETDEWEB)

    Aspegren, O E.A.; Eklund, A J

    1951-03-15

    A method is described for rendering harmless sulfur dioxide-carrying gases, which are formed in processes for the manufacture of solid, liquid, or gaseous products by pyrolysis of oil shale, and thereby to extract valuable products, characterized in that the sulfur dioxide-carrying gases are washed with a solution or sludge obtained by leaching wholly or partly burned-out residues from the pyrolysis.

  12. Movement of Landless Rural Workers and Training for Gender Equality

    Directory of Open Access Journals (Sweden)

    Jeniffer Ribeiro Pessôa

    2017-09-01

    Full Text Available The Landless Rural Workers Movement (MST was formed in 1984 with the main objective of fighting for agrarian reform in Brazil. With more than 30 years of history, the MST, in addition to organizing production and political intervention, has built an important educational work for the Landless and a formation focused on the change of values. Among these values ​​we highlight the struggle for gender equality. Thus, the main objective of this article is to present to the readers an analysis of the MST's gender policies, highlighting the connection of this type of policy with the formation of the Landless. The procedures adopted were documentary research and bibliographic research. For the collection of data, the official MST publications, texts prepared by its members and specialized literature on the subject were used. The analysis led us to conclude that the Movement, since its inception, has produced theoretical texts and developed practical actions trying to increase the participation of women in production, decision-making bodies and political coordination; Guarantee and expand the legal rights of women; Combat violence against women; And introduce gender equality in their formal education and training courses. To this end, the MST elaborated strategic proposals and created a Gender Sector focused on the promotion of gender equality and equal participation.

  13. Gas production, microbial synthesis by radio phosphorus and digestibility of babassu and mofumbo in sheep diets; Producao de gases, sintese microbiana pelo radiofosforo e digestibilidade do babacu e mofumbo em dietas de ovinos

    Energy Technology Data Exchange (ETDEWEB)

    Abdalla Filho, Adibe Luiz

    2015-06-01

    When food shortages in natural pastures is committed to animal nutrition, small ruminants can incorporate into their diets the leaves of other plants, such as trees and shrubs, many of them rich in secondary metabolites such as tannins and which still lack of studies about its effect on animal productivity. In order to verify the possibility of using leaves of Orbignya phalerata (Babassu) and Combretum leprosum (Mofumbo) in feed and to evaluate the effect of their inclusion in the sheep production system, two studies were conducted at the Animal Nutrition Laboratory of Centro de Energia Nuclear na Agricultura, Universidade de Sao Paulo, Piracicaba (LANA/CENA-USP). The first study evaluated the performance variables, biochemical and hematological parameters and also determined the microbial protein synthesis, nutrient apparent digestibility and enteric production of methane (CH4). The second study assessed the carcass characteristics, fatty acid profile and meat color of male sheep used in the first study. The experimental treatments were diets with forages to concentrate rate of 50:50, drawn up on the basis of using the leaves of the experimental plants replacing 30% of the Cynodon dactylon (Tifton-85) hay, resulting in three treatments: Control (no hay replacement), Babassu and Mofumbo. In the first study, there were used 24 Santa Ines sheep, in a randomized experimental design with eight repetitions for each treatment and 48 days of trial period. Also during this period, an in vitro microbial protein synthesis was performed using the radio phosphorus using five different inoculum of each studied treatment. After this period, for nine days, six animals from each treatment were allocated in metabolic cages for determining the nutrient apparent digestibility, microbial protein synthesis and nitrogen balance. Simultaneously it was quantified the enteric CH4 production in vivo. The Control group showed greater (P < 0.05) apparent digestibility of acid detergent fiber

  14. Periodic Discordance Between Vote Equality and Representational Equality in the United States

    Directory of Open Access Journals (Sweden)

    Sarah K. Cowan

    2015-08-01

    Full Text Available American democracy has two central values that are often in tension: vote equality, that each vote has equal influence, and representational equality, that each elected official represents equal numbers of people. The electoral standard of “one person, one vote” ensures representational equality, and that often ensures vote equality. This relationship fails, however, under certain demographic conditions, namely, when a large, non-enfranchised population resides unevenly across jurisdictions. Then, representational equality is preserved and vote equality is violated. Prior to women’s suffrage, for example, western states had relatively fewer women than the remainder of the country, contributing to gross vote inequality, though rectified through extension of the franchise. Given recent high rates of immigration to some states, I ask whether the two values are in tension. I find that they are, and quantify the electoral consequences of this disjuncture at 13 House seats in 2010.

  15. FINANCIAL EQUALIZATION TRANSFERS BETWEEN PUBLIC AUTHORITIES BUDGETS

    Directory of Open Access Journals (Sweden)

    Emilia Cornelia STOICA

    2015-07-01

    Full Text Available This paper presents financial balancing mechanisms that it is applied by the most of the states with competitive market economy, in order to ensure equity between local authorities, as well as the stability of the entire national tax and budgetary system. In this regard, it is described the concept of financial equalization and its structure according to two fundamental criteria: - equalization in accordance with the financial transfers orientation, distinguishing thus (1 horizontal equalization, which is carried out between local authorities and consists in assigning a part of the richest territorial collectivities resources to the disadvantaged ones; (2 vertical financial equalization, achieved through consolidated transfers the state / federal budget to the budgets by territorial administrative units, both for the operating budget section and for the development one; - financial equalization according to the regional or local disparities observed as a result of territorial-level analyzes: (1 financial equalization based on balancing public revenues of the administrative-territorial units, which tries to correct the differences between the financial resources of each local authority and (2 the financial balancing based on the costs, which aims to reduce differences between standard costs of public services per capita. Financial equalization mechanisms have as main objective the reduction as far as the total elimination of the regional or local disparities, which are also described in this article.

  16. Ação do extrato de própolis sobre a fermentação in vitro de diferentes alimentos pela técnica de produção de gases Effect of the propolis on the in vitro fermentation of different feedstuffs by the technique of gas production

    Directory of Open Access Journals (Sweden)

    Deolindo Stradiotti Júnior

    2004-08-01

    Full Text Available Dois experimentos foram realizados procurando-se avaliar in vitro a eficiência do extrato de própolis em inibir a produção de gases oriundos da fermentação ruminal de diferentes alimentos. No primeiro experimento, incubaram-se 100 mg de matéria seca de feno de brachiária moído, em ausência (0,2 mL de solução alcoólica a 70% em água ou presença de 0,2 mL de extrato de própolis (extração de 3 g de própolis em pedra triturada para cada 10 mL de álcool a 70%, durante dez dias, posteriormente diluída para 50% da mesma. O extrato de própolis, quando comparado ao tratamento controle, reduziu a produção final total e a produção final de gases para carboidratos fibrosos. A taxa de digestão específica para carboidratos fibrosos e carboidratos não-fibrosos foi superior, quando se utilizou o extrato de própolis. A redução da produção total de gases pode ser atribuída ao efeito da própolis em aumentar a concentração molar de propionato, com conseqüente diminuição da relação acetato:propionato. No experimento 2, procurou-se avaliar diferentes diluições de extrato de própolis (0; 13,7; 33,3; e 66,7%, em analogia à monensina sódica, adicionada para atingir 5,0 µM como concentração final nos tubos de incubação. Observou-se efeito significativo de tratamento, alimento e interação alimento:tratamento sobre o volume de gás proveniente dos carboidratos fibrosos e não-fibrosos. Não houve efeito do menor nível de própolis (13,7% sobre nenhuma das dietas avaliadas, tanto para volume final de gases oriundos dos carboidratos fibrosos quanto não-fibrosos. Entretanto, o maior nível (66,7% mostrou-se eficiente em todas as dietas, para ambos os carboidratos, inclusive suplantando a monensina, na maioria das vezes, quanto à menor produção final de gases.Two experiments were accomplished with the objective to evaluate the in vitro efficiency of the propolis extract to inhibit the gas production from ruminal

  17. Effective conversion of biomass tar into fuel gases in a microwave reactor

    Energy Technology Data Exchange (ETDEWEB)

    Anis, Samsudin, E-mail: samsudin-anis@yahoo.com [Department of Mechanical Engineering, Universitas Negeri Semarang, Kampus Sekaran, Gunungpati, 50229 Semarang, 8508101 (Indonesia); Zainal, Z. A., E-mail: mezainal@usm.my [School of Mechanical Engineering, Universiti Sains Malaysia, Engineering Campus, 14300 Nibong Tebal, Penang (Malaysia)

    2016-06-03

    This work deals with conversion of naphthalene (C{sub 10}H{sub 8}) as a biomass tar model compound by means of thermal and catalytic treatments. A modified microwave oven with a maximum output power of 700 W was used as the experimental reactor. Experiments were performed in a wide temperature range of 450-1200°C at a predetermined residence time of 0.24-0.5 s. Dolomite and Y-zeolite were applied to convert naphthalene catalytically into useful gases. Experimental results on naphthalene conversion showed that conversion efficiency and yield of gases increased significantly with the increase of temperature. More than 90% naphthalene conversion efficiency was achieved by thermal treatment at 1200°C and 0.5 s. Nevertheless, this treatment was unfavorable for fuel gases production. The main product of this treatment was soot. Catalytic treatment provided different results with that of thermal treatment in which fuel gases formation was found to be the important product of naphthalene conversion. At a high temperature of 900°C, dolomite had better conversion activity where almost 40 wt.% of naphthalene could be converted into hydrogen, methane and other hydrocarbon gases.

  18. Algal Biomass from Wastewater and Flue Gases as a Source of Bioenergy

    Directory of Open Access Journals (Sweden)

    Sandra Lage

    2018-03-01

    Full Text Available Algae are without doubt the most productive photosynthetic organisms on Earth; they are highly efficient in converting CO2 and nutrients into biomass. These abilities can be exploited by culturing microalgae from wastewater and flue gases for effective wastewater reclamation. Algae are known to remove nitrogen and phosphorus as well as several organic contaminants including pharmaceuticals from wastewater. Biomass production can even be enhanced by the addition of CO2 originating from flue gases. The algal biomass can then be used as a raw material to produce bioenergy; depending on its composition, various types of biofuels such as biodiesel, biogas, bioethanol, biobutanol or biohydrogen can be obtained. However, algal biomass generated in wastewater and flue gases also contains contaminants which, if not degraded, will end up in the ashes. In this review, the current knowledge on algal biomass production in wastewater and flue gases is summarized; special focus is given to the algal capacity to remove contaminants from wastewater and flue gases, and the consequences when converting this biomass into different types of biofuels.

  19. Gases vacuum dedusting and cooling

    Directory of Open Access Journals (Sweden)

    Alexey А. Burov

    2015-03-01

    Full Text Available Represented are the results of operating the ladle degassing vacuum plant (productivity: 120 tons of liquid steel with various dust collectors. The process gases’ cooling and dedusting, obtained in the closed loop buran study, provides opportunity to install a bag filter after that closed loop and its efficient use. Proven is the effectiveness of the cylindrical cyclone replacement with a multichannel (buran dust collector, based on a system of closed-loop (return coupling serially connected curved ducts, where the dusty gas flow rotation axis is vertically positioned. The system of closed-loop serially connected curvilinear channels creates preconditions for the emergence of a negative feedback at the curvilinear gas flow containing transit and circulating flows. These conditions are embodied with circulating flows connecting the in- and outputs of the whole system each channel. The transit flow multiple continuous filtration through the circulating dust layers leads to the formation and accumulation of particles aggregates in the collection chamber. The validity of such a dusty flow control mechanism is confirmed by experimental data obtained in a vacuum chamber. Therefore, replacing one of the two buran’s forevacuum pumps assemblies with the necessary number of curved channels (closed loop is estimated in a promising method.

  20. The trade-off between short- and long-lived greenhouse gases under uncertainty and learning

    International Nuclear Information System (INIS)

    Aaheim, H. Asbjoern; Brekke, Kjell Arne; Lystad, Terje; Torvanger, Asbjoern

    2001-01-01

    To find an optimal climate policy we must balance abatement of different greenhouse gases. There is substantial uncertainty about future damages from climate change, but we will learn more over the next few decades. Gases vary in terms of how long they remain in the atmosphere, which means that equivalent pulse emissions have very different climate impacts. Such differences between gases are important in consideration of uncertainty and learning about future damages, but they are disregarded by the conventional concept of Global Warming Potential We have developed a numerical model to analyze how uncertainty and learning affect optimal emissions of both CO 2 and CH 4 . In the model, emissions of these greenhouse gases lead to global temperature increases and production losses. New information about the severity of the climate problem arrives either in 2010 or in 2020. We find that uncertainty causes increased optimal abatement of both gases, compared to the certainty case. This effect amounts to 0.08 o C less expected temperature increase by year 2200. Learning leads to less abatement for both gases since expected future marginal damages from emissions are reduced. This effect is less pronounced for the short-lived CH 4 . (author)

  1. The trade-off between short- and long-lived greenhouse gases under uncertainty and learning

    Energy Technology Data Exchange (ETDEWEB)

    Aaheim, H. Asbjoern; Brekke, Kjell Arne; Lystad, Terje; Torvanger, Asbjoern

    2001-07-01

    To find an optimal climate policy we must balance abatement of different greenhouse gases. There is substantial uncertainty about future damages from climate change, but we will learn more over the next few decades. Gases vary in terms of how long they remain in the atmosphere, which means that equivalent pulse emissions have very different climate impacts. Such differences between gases are important in consideration of uncertainty and learning about future damages, but they are disregarded by the conventional concept of Global Warming Potential We have developed a numerical model to analyze how uncertainty and learning affect optimal emissions of both CO{sub 2} and CH{sub 4}. In the model, emissions of these greenhouse gases lead to global temperature increases and production losses. New information about the severity of the climate problem arrives either in 2010 or in 2020. We find that uncertainty causes increased optimal abatement of both gases, compared to the certainty case. This effect amounts to 0.08 {sup o}C less expected temperature increase by year 2200. Learning leads to less abatement for both gases since expected future marginal damages from emissions are reduced. This effect is less pronounced for the short-lived CH{sub 4}. (author)

  2. Equality Hypocrisy, Inconsistency, and Prejudice: The Unequal Application of the Universal Human Right to Equality

    Science.gov (United States)

    2015-01-01

    In Western culture, there appears to be widespread endorsement of Article 1 of the Universal Declaration of Human Rights (which stresses equality and freedom). But do people really apply their equality values equally, or are their principles and application systematically discrepant, resulting in equality hypocrisy? The present study, conducted with a representative national sample of adults in the United Kingdom (N = 2,895), provides the first societal test of whether people apply their value of “equality for all” similarly across multiple types of status minority (women, disabled people, people aged over 70, Blacks, Muslims, and gay people). Drawing on theories of intergroup relations and stereotyping we examined, relation to each of these groups, respondents’ judgments of how important it is to satisfy their particular wishes, whether there should be greater or reduced equality of employment opportunities, and feelings of social distance. The data revealed a clear gap between general equality values and responses to these specific measures. Respondents prioritized equality more for “paternalized” groups (targets of benevolent prejudice: women, disabled, over 70) than others (Black people, Muslims, and homosexual people), demonstrating significant inconsistency. Respondents who valued equality more, or who expressed higher internal or external motivation to control prejudice, showed greater consistency in applying equality. However, even respondents who valued equality highly showed significant divergence in their responses to paternalized versus nonpaternalized groups, revealing a degree of hypocrisy. Implications for strategies to promote equality and challenge prejudice are discussed. PMID:25914516

  3. Equality Hypocrisy, Inconsistency, and Prejudice: The Unequal Application of the Universal Human Right to Equality.

    Science.gov (United States)

    Abrams, Dominic; Houston, Diane M; Van de Vyver, Julie; Vasiljevic, Milica

    2015-02-01

    In Western culture, there appears to be widespread endorsement of Article 1 of the Universal Declaration of Human Rights (which stresses equality and freedom). But do people really apply their equality values equally, or are their principles and application systematically discrepant, resulting in equality hypocrisy? The present study, conducted with a representative national sample of adults in the United Kingdom ( N = 2,895), provides the first societal test of whether people apply their value of "equality for all" similarly across multiple types of status minority (women, disabled people, people aged over 70, Blacks, Muslims, and gay people). Drawing on theories of intergroup relations and stereotyping we examined, relation to each of these groups, respondents' judgments of how important it is to satisfy their particular wishes, whether there should be greater or reduced equality of employment opportunities, and feelings of social distance. The data revealed a clear gap between general equality values and responses to these specific measures. Respondents prioritized equality more for "paternalized" groups (targets of benevolent prejudice: women, disabled, over 70) than others (Black people, Muslims, and homosexual people), demonstrating significant inconsistency. Respondents who valued equality more, or who expressed higher internal or external motivation to control prejudice, showed greater consistency in applying equality. However, even respondents who valued equality highly showed significant divergence in their responses to paternalized versus nonpaternalized groups, revealing a degree of hypocrisy. Implications for strategies to promote equality and challenge prejudice are discussed.

  4. Land Governance, Gender Equality and Development

    DEFF Research Database (Denmark)

    Ravnborg, Helle Munk; Spichiger, Rachel; Broegaard, Rikke Brandt

    2016-01-01

    pursued in these reforms and examines the role played by donor cooperation. Despite significant progress in developing land legislation that upholds gender equality, implementation often does not follow suit, and women still face discrimination. Based on country case studies, the article identifies six......Most land governance reforms seek to enhance tenure security, encourage investments and thereby promote economic growth. Increasingly, land reforms attempt to secure women's and other vulnerable groups' access to land. This article reviews the extent to which gender equality in land tenure has been...... challenges, which should be addressed to achieve gender equality in land tenure....

  5. Fate of Gases generated from Nuclear Wastes

    Energy Technology Data Exchange (ETDEWEB)

    Srinivasulu, M.; Francis, A. J. [Pohang Univ. of Science and Technology, Pohang (Korea, Republic of); Francis, A. J. [Brookhaven National Laboratory, New York (United States)

    2013-05-15

    The backfill materials such as cement, bentonite or crushed rock are used as engineered barriers against groundwater infiltration and radionuclide transport. Gas generation from radioactive wastes is attributed to radiolysis, corrosion of metals, and degradation of organic materials. Corrosion of steel drums and biodegradation of organic materials in L/ILW can generate gas which causes pressure build up and has the potential to compromise the integrity of waste containers and release the radionuclides and other contaminants into the environment. Performance assessment therefore requires a detailed understanding of the source and fate of gas generation and transport within the disposal system. Here we review the sources and fate of various type of gases generated from nuclear wastes and repositories. Studies on modeling of the fate and transport of repository gases primarily deal with hydrogen and CO{sub 2}. Although hydrogen and carbon dioxide are the major gases of concern, microbial transformations of these gases in the subterranean environments could be significant. Metabolism of hydrogen along with the carbon dioxide results in the formation of methane, low molecular weight organic compounds and cell biomass and thus could affect the total inventory in a repository environment. Modeling studies should take into consideration of both the gas generation and consumption processes over the long-term.

  6. Electron-Atom Collisions in Gases

    Science.gov (United States)

    Kraftmakher, Yaakov

    2013-01-01

    Electron-atom collisions in gases are an aspect of atomic physics. Three experiments in this field employing a thyratron are described: (i) the Ramsauer-Townsend effect, (ii) the excitation and ionization potentials of xenon and (iii) the ion-electron recombination after interrupting the electric discharge.

  7. Acid dew point measurement in flue gases

    Energy Technology Data Exchange (ETDEWEB)

    Struschka, M.; Baumbach, G.

    1986-06-01

    The operation of modern boiler plants requires the continuous measurement of the acid dew point in flue gases. An existing measuring instrument was modified in such a way that it can determine acid dew points reliably, reproduceably and continuously. The authors present the mechanisms of the dew point formation, the dew point measuring principle, the modification and the operational results.

  8. Properties and Bibliography of GaSe

    Science.gov (United States)

    1994-02-01

    Musaev, A. E. Bakhyshev, N. M. Gasanly and L. G. Musaeva . (1975). "Anisotropy of the optical constants of GaS and GaSe near the absorption edge." Sov...Phys. Semiconductors. 9 94-95 Russian ref.: Fiz. Tekh. Poluprovodn. 9 142-145 (January 1975). Akhundov, G. A., L. G. Musaeva and M. D. Khomutova

  9. Mitigation of greenhouse gases from agriculture

    DEFF Research Database (Denmark)

    Schils, R.L.M.; Ellis, J. L.; de Klein, C. A. M.

    2013-01-01

    Models are widely used to simulate the emission of greenhouse gases (GHG). They help to identify knowledge gaps, estimate total emissions for inventories, develop mitigation options and policies, raise awareness and encourage adoption. These models vary in scale, scope and methodological approach...

  10. Noble gases as cardioprotectants - translatability and mechanism

    NARCIS (Netherlands)

    Smit, Kirsten F.; Weber, Nina C.; Hollmann, Markus W.; Preckel, Benedikt

    2015-01-01

    Several noble gases, although classified as inert substances, exert a tissue-protective effect in different experimental models when applied before organ ischaemia as an early or late preconditioning stimulus, after ischaemia as a post-conditioning stimulus or when given in combination before,

  11. Toxicity of pyrolysis gases from polyether sulfone

    Science.gov (United States)

    Hilado, C. J.; Olcomendy, E. M.

    1979-01-01

    A sample of polyether sulfone was evaluated for toxicity of pyrolysis gases, using the toxicity screening test method developed at the University of San Francisco. Animal response times were relatively short at pyrolysis temperatures of 600 to 800 C, with death occurring within 6 min. The principal toxicant appeared to be a compound other than carbon monoxide.

  12. Anaesthetic gases: environmental impact and alternatives ...

    African Journals Online (AJOL)

    Anaesthetic gases: environmental impact and alternatives. ... PROMOTING ACCESS TO AFRICAN RESEARCH ... to be small when compared to gaseous emissions from industrial and agricultural sources, the actual percentage contribution to climate change is small. ... EMAIL FREE FULL TEXT EMAIL FREE FULL TEXT

  13. Cold quantum gases with resonant interactions

    NARCIS (Netherlands)

    Marcelis, B.

    2008-01-01

    We study ultracold gases of alkali-metal atoms in the quantum degenerate regime. The interatomic interactions in these type of systems can be tuned using resonances induced by magnetic or electric fields. The tunability of the interactions, together with the possibility of confining the atoms with

  14. Teacher's Guide for Balloons and Gases.

    Science.gov (United States)

    Griffith, Joe H.; And Others

    This guide was developed to provide children with an opportunity to prepare and collect several common gases and to discover and work with some of their properties. The guide is divided into five major sections: (1) introduction, (2) materials, (3) activities, (4) balloons aloft, and (5) an appendix. The introduction provides information…

  15. Prediction of friction coefficients for gases

    Science.gov (United States)

    Taylor, M. F.

    1969-01-01

    Empirical relations are used for correlating laminar and turbulent friction coefficients for gases, with large variations in the physical properties, flowing through smooth tubes. These relations have been used to correlate friction coefficients for hydrogen, helium, nitrogen, carbon dioxide and air.

  16. Plant for removing radioactive rare gases

    International Nuclear Information System (INIS)

    An, Buzai; Kanazawa, Toshio

    1977-01-01

    The outline of the pilot plant to remove and recover radioactive rare gases generated from nuclear power plants, reprocessing installations for nuclear fuel, nuclear research installations, etc. is described below. Among the studies of various processes such as liquefaction and distillation, absorption into solvents, active carbon adsorption, diaphragm method, etc., the liquefaction and distillation process by rectification at low temperature has been positively developed. It is in the stage of practical application for removing rare gases in waste gases from reprocessing and nuclear power plants. This is the process with high safety and excellent rare gas removing capability. Further research and development have been also made for selective adsorption and desorption method at low temperature which is very efficient as there is no release of long life nuclides such as Krypton-85. Rare gases recovered by the above mentioned removal systems must be stored safely for a long time as their half lives are long and specific radioactivities are high. The study has been made continuously on the storage methods including adsorption in cylinders and remotely automatically sealing storing system. (Kobatake, H.)

  17. Optimization of conditions to produce nitrous gases by electrochemical reduction of nitric acid; Optimisation des conditions operatoires de production de vapeurs nitreuses par reduction electrochimique d`acide nitrique

    Energy Technology Data Exchange (ETDEWEB)

    Lemaire, M. [CEA Centre d`Etudes Nucleaires de Saclay, 91 -Gif-sur-Yvette (France)]|[CEA Centre d`Etudes de la Vallee du Rhone, 30 -Marcoule (France). Direction du Cycle du Combustible

    1996-11-22

    Gaseous nitrogen oxides (NO and NO{sub 2}) involved as oxidizing agents in nuclear fuel reprocessing can be an produced by electrochemical reduction of nitric acid. This could be an interesting alternative to the usual process because no wastes are generated. Voltammetric studies on a platinum electrode show that two reduction potential regions are observed in concentrated nitric acid solutions, between 0.05 V{sub S}HE and 0.3 V{sub S}HE and O.5 V{sub S}HE and 1 V{sub S}HE. The highest potential region reduction mechanism was studies by: classical micro-electrolysis methods; macro-electrolysis methods; infra-red spectroscopy couplet to electrochemistry. It was determined that the origin of nitric acid reduction is the electrochemical reduction of nitrous acid in nitric oxide which chemically reduces nitric acid. This reaction produces nitrous acid back which indicate an auto-catalytic behaviour of nitric acid reduction mechanism. Nitrogen dioxide evolution during nitric acid reduction can also be explained by an other chemical reaction. In the potential value of platinum electrode is above 0.8 V{sub S}HE, products of the indirect nitric acid reduction are nitrous acid, nitrogen oxide and nitrogen dioxide. Below this value nitric oxide can be reduced in nitrous oxide. Thus the potential value is the most important parameter for the nitrogen oxides production selectivity. However, owing to the auto-catalytic character of the reduction mechanism, potential value can be controlled during intentiostatic industrial electrolysis. (author). 91 refs.

  18. [Equality between men and women is a right].

    Science.gov (United States)

    1995-07-01

    Equality between men and women is one of the basic human rights. Investments in health, education, and family planning are the fundamental measures for promoting sexual equality. Promoting equality in turn is an investment in improving the health of women and children and the quality of human resources. By reducing pressure for large families, sexual equality creates conditions for faster economic growth. Women control most of the nonmonetary economy including subsistence agriculture, care of children, and domestic work, and they also play an important role in the monetary economy, although much of their work is unrecognized. The unfavorable condition of women limits their access to productive goods and social services. A strong inverse relationship exists between fertility and female education. More educated women have a greater probability of receiving prenatal care and of providing adequate care for their children. In many countries of Latin America, more than 20% of births are to adolescents. Adolescent pregnancies are often problematic, resulting in interrupted education, perpetuation of poverty, health complications, abortion, or even suicide. The problems of adolescent maternity are closely related to the inferior position of women. Education and family planning services are essential in breaking the vicious cycle. Access to employment for women contributes to reducing fertility, improves the position of women in the family, directly aids children, and reduces the woman's need to have many children for old age security. To establish conditions of equality between men and women, political actions must be taken to assure women equal social conditions and economic opportunities. Men must become more involved in family planning and in child care. The society as a whole must understand the social function of maternity.

  19. The EEOC's New Equal Pay Act Guidelines.

    Science.gov (United States)

    Greenlaw, Paul S.; Kohl, John P.

    1982-01-01

    Analyzes the new guidelines for enforcement of the Equal Pay Act and their implications for personnel management. Argues that there are key problem areas in the new regulations arising from considerable ambiguity and uncertainty about their interpretation. (SK)

  20. Economic growth and gender equality | IDRC - International ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    And conversely, does gender equality impact economic growth? ... change and growth in the economy on women's employment opportunities and the type ... sectors and their overall effect on development outcomes, such as economic growth ...

  1. Teaching the Economics of Equal Opportunities.

    Science.gov (United States)

    Ownby, Arnola C.; Rhea, Jeanine N.

    1990-01-01

    Focuses on equal opportunities--for education, pay, and with gender bias for individuals and business organizations. Suggests that business educators can expand the implications to include ethnic-based inequalities as well. (JOW)

  2. Adaptive histogram equalization and its variations

    NARCIS (Netherlands)

    Pizer, S.M.; Amburn, E.P.; Austin, J.D.; Cromartie, R.; Geselowitz, A.; Greer, Trey; Haar Romenij, ter B.M.; Zimmerman, J.B.; Zuiderveld, K.J.

    1987-01-01

    Adaptive histogram equalization (ahe) is a contrast enhancement method designed to be broadly applicable and having demonstrated effectiveness. However, slow speed and the overenhancement of noise it produces in relatively homogeneous regions are two problems. We report algorithms designed to

  3. Equal Access to Justice Act Payments

    Data.gov (United States)

    Social Security Administration — A dataset containing payment amounts made by the Social Security Administration for court-approved Equal Access to Justice Act (EAJA) payments for fiscal year 2010...

  4. Girls' Education and Gender Equality. Factsheet

    Science.gov (United States)

    Global Partnership for Education, 2016

    2016-01-01

    This brief fact sheet presents benefits of investing in gender equality, how the Global Partnership for Education (GPE) supports inclusive and equitable quality education, as well as the results it has achieved.

  5. Valuing Equality in Irish Social Care

    Directory of Open Access Journals (Sweden)

    Niall Hanlon

    2009-01-01

    Full Text Available In this article the author critiques Irish social care by presenting an equality perspective on practice. An equality perspective involves developing emancipatory practices, that is, ways of helping that provide egalitarian solutions and outcomes. Although emancipatory values are often contrasted with traditional social care values, the author seeks a pragmatic and integrated approach to emancipatory practices rather than a restatement of traditional dichotomies. Emancipatory practice begins with an appreciation of the nature and relevance of inequalities on the lives of diverse social care users. Building a commitment to equality within social care education and practice is an important step in altering many individual and institutional social care practices by focussing on equality processes and outcomes as central social care objectives. Using a well credited framework that outlines five dimensions of inequality (Baker, Lynch, Cantillon and Walsh, 2004, the author argues that social care educators and practitioners need to debate the issues raised and develop emancipatory practices.

  6. ECONOMIC GROWTH AND EQUALITY IN REDUCING POVERTY

    Directory of Open Access Journals (Sweden)

    Zaenal Muttaqin

    2016-02-01

    Full Text Available In some developing countries, the instrument to alleviate the poverty is by using the economic growth. So, the increasing in investment, infrastructure development, and macroeconomics stability always be priority from developing countries. In this article explain that economic growth is not the important factor to alleviate the poverty, because equality sometimes is more important rather than the economic growth. In this context, its measure by inequality growth trade off index (IGTI. This method is to measure the influence of economic growth to reducing the inequality, with this method every country can measure which one is better to reducing the poverty whether the economic growth or equality. With this method, Laos in 2000 show that economic growth is more important than equality, but in the same year in Thailand show that equality is more important than economic growth.DOI: 10.15408/sjie.v1i1.2592

  7. Multicultural Challenges - new gender equality dilemmas

    DEFF Research Database (Denmark)

    Siim, Birte

    In my research have been interested in exploring tensions between diversity and gender equality from a theoretical and comparative approach, looking at the Nordic welfare, citizenship and gender regimes from a cross-national European perspective. In this key-note presentation I draw on results...... and inspiration from a number of comparative research projects and networks. In the following I address three issues that have been central in academic debates: 1) The challenges from multiculturalism to gender equality, 2) gendering citizenship and migration and 3) Nordic feminist debates about diversity....... In the last section I argue that one solution to the new gender equality dilemma posed by increased diversity among women is a simultaneous re-framing of multiculturalism and gender equality....

  8. Causality, spin, and equal-time commutators

    International Nuclear Information System (INIS)

    Abdel-Rahman, A.M.

    1975-01-01

    We study the causality constraints on the structure of the Lorentz-antisymmetric component of the commutator of two conserved isovector currents between fermion states of equal momenta. We discuss the sum rules that follow from causality and scaling, using the recently introduced refined infinite-momentum technique. The complete set of sum rules is found to include the spin-dependent fixed-mass sum rules obtained from light-cone commutators. The causality and scaling restrictions on the structure of the electromagnetic equal-time commutators are discussed, and it is found, in particular, that causality requires the spin-dependent part of the matrix element for the time-space electromagnetic equal-time commutator to vanish identically. It is also shown, in comparison with the electromagnetic case, that the corresponding matrix element for the time-space isovector current equal-time commutator is required, by causality, to have isospin-antisymmetric tensor and scalar operator Schwinger terms

  9. Equality of Opportunity for Well-Being

    DEFF Research Database (Denmark)

    Mahler, Daniel Gerszon; Ramos, Xavier

    2017-01-01

    A growing literature has tried to measure the extent to which individuals have equal opportunities to acquire income. At the same time, policy makers have doubled down on efforts to go beyond income when measuring well- being. We attempt to bridge these two areas by measuring the extent to which...... individuals have equal opportunities to achieve a high level of well-being. We use the German Socio-Economic Panel to measure well-being in four different ways including incomes. This makes it possible to determine if the way well-being is measured matters for identifying who the opportunity......-deprived are and for tracking inequality of opportunity over time. We find that, regardless of how well-being is measured, the same people are opportunity-deprived and equality of opportunity has improved over the past 20 years. This suggests that going beyond income has little relevance if the objective is to provide equal...

  10. XPS and XAES measurements on trapped rare gases in transition metals

    International Nuclear Information System (INIS)

    Baba, Y.; Yamamoto, H.; Sasaki, T.A.

    1992-01-01

    Electronic structures of rare gases implanted in various transition metals have been investigated by means of an X-ray photoelectron spectroscopy (XPS) and X-ray-induced Auger electron spectroscopy (XAES). The Auger-parameter method is applied to the evaluation of electronic relaxation energy of rare gas atoms due to the surrounding metal potential. The extra-atomic relaxation energy of four kinds of rare gases (Ne, Ar, Kr, Xe) in the same metal matrix (Ti) increases with the atomic mass of the rare gases. On the other hand, the extra-atomic relaxation energy of the same rare gas (Xe) in different metal matrices ranges from 3.0 eV (in Mo). These values increase with the number of d-electrons in the metals. This tendency and the absolute values of the relaxation energies are in good agreement with those calculated for 3d transition metals referenced to their gas-phase values. Based on these results, it is concluded that the energetically implanted rare gases are trapped at the substitution site in the metal lattice as an isolated atom, and the trapped atoms feel the surrounding metal potential. It is also made clear that the potential affecting the implanted atom is d-like, and the relaxation energy of the implanted rare gas during the photoemission process is almost equal to those of the metal itself. (orig.)

  11. Projections of global emissions of fluorinated greenhouse gases in 2050

    Energy Technology Data Exchange (ETDEWEB)

    Gschrey, Barbara; Schwarz, Winfried [Oeko-Recherche Buero fuer Umweltforschung und -beratung GmbH, Frankfurt/Main (Germany)

    2009-11-15

    Emissions of fluorinated greenhouse gases are currently covered under the Montreal Protocol, which focuses on ozone-depleting substances such as CFCs (chlorofluorocarbons) and HCFCs (hydrochlorofluorocarbons), and under the Kyoto Protocol, which controls emissions of HFCs (hydrofluorocarbons), PFCs (perfluorocarbons) and SF{sub 6} (sulfur hexafluoride). This study bridges the gap between political regimes and their reporting systems by giving an overview of banks and emissions of all fluorinated gases in 2005, and projections of banks and emissions of fluorinated gases in 2050. The Montreal Protocol and its amendments will eventually result in the full phase out of CFCs and HCFCs. Developed countries have already completed the phase out of CFCs and will reach full phase out of HCFCs by 2020. Developing countries, in contrast, will phase out CFCs by 2010 and HCFCs by 2030. Although climate-friendly technology is available for most applications, the risk occurs that substitutes for ozone-depleting substances rely on HFCs, which cause global warming. This study determines global emissions of HFCs, PFCs and SF{sub 6} (Kyoto F-gases) in 2050 in a ''business-as-usual'' scenario. The global population is expected to increase to ca. 8.7 billion people, and high economic growth of 3.5% per year is assumed. Emissions in 2050 are quantified for each sector of application as well as for developed and developing countries based on growth rates of each sector. In 2050, total global emissions of fluorinated greenhouse gases are projected to amount to 4 GT CO{sub 2} eq. which equals ca. 5.9% of the total greenhouse gas emissions at this time. Compared to a relatively small share of F-gas emissions ranging around 1.3% of total greenhouse gas emissions in 2004, this percentage reflects an enormous increase. Relative to projected direct CO{sub 2} emissions alone, the 2050 F-gas emissions will even account for ca. 7.9%. In case of CO{sub 2} mitigation, this share

  12. Gender Equality, Intersectionality and Diversity in Europe

    DEFF Research Database (Denmark)

    Agustin, Lise Rolandsen

    . Drawing on discursive policy analysis, it addresses the interaction between policies, institutions and civil society actors in relation to gender equality, diversity and intersectionality at the European level. Rolandsen Agustín successfully integrates the concepts of diversity and gender equality...... into a contextualized approach to analyzing transnational intersectionality. This unique approach focuses on processes of institutionalization and mobilization, which are addressed in relation to the institutional setup of the EU, its policies and policymaking structures, as well as transnational civil society...

  13. Implementation of the Midway Image Equalization

    Directory of Open Access Journals (Sweden)

    Thierry Guillemot

    2016-06-01

    Full Text Available In this paper, we present the detailed algorithm of the Midway Image Equalization giving to a pair of images the same histogram while maintaining as much as possible their previous gray dynamics. The midway equalization is primarily designed for gray level images, but can be applied channel-wise to color images. This method is easy to implement, fast to compute, fully automatic and requires no parameter.

  14. Reforming Equalization: Balancing Efficiency, Entitlement and Ownership

    Directory of Open Access Journals (Sweden)

    Bev Dahlby

    2014-08-01

    Full Text Available In this paper, we provide an overview of the equalization grant system in Canada and the issues that have been raised concerning the reform of the fiscal transfer system. Any reforms to the equalization grant system have to balance three concerns — “efficiency” effects that arise through federal financing of transfers, and the incentive effects on provincial fiscal policies, “entitlement” to reasonably comparable public services at reasonably comparable levels of taxation, and “ownership” of resources and independence of fiscal policies by provincial governments. Five proposals for reform of the equalization system are discussed. With regard to the inclusion rate for resource revenues in equalization formula, we argue that the rate should be reduced from 50 per cent to 25 per cent and that ceiling on total equalization payments should be eliminated. We argue against the proposal to exempt from the calculation of equalization entitlements that are deposited in provincial sovereign wealth funds because this would not reduce total equalization entitlements in present value terms, it would be complex to implement if it extended to all forms of savings by provinces (such as debt reduction, and it would not alter the resource rich provinces’ incentives to save more of their resource revenues. We argue against a proposal to reduce CHT and CST to provinces with above average fiscal capacities because this would reduce their incentive to develop and tax their resources, and it would be counter to the purpose of these block grants, which is to reduce the vertical fiscal imbalance between the federal and the provincial governments. We review the Gusen (2012a proto-type model for incorporating variations in costs and needs in the computation of the equalization entitlements and argue that this procedure seems feasible and merits further analysis.

  15. Doing gender (in) equality in Swedish family farming

    OpenAIRE

    Andersson, Elias

    2014-01-01

    Economic and social conditions on Swedish farms have altered in recent decades, restructuring the sector, but the family farm is still the primary production unit. Sweden is often described as a role model in gender equality, but a gender-unequal situation in farming has been identified, posing a political challenge. This thesis critically assessed how gender inequalities are reproduced within Swedish family farming by analysing how the 'doing' of family farming, in terms of labour and ma...

  16. Petroleum Gases Market in Turkey

    International Nuclear Information System (INIS)

    Bumin, S.; Ozyoruk, B.

    2007-01-01

    We are at the beginning of a new millennium. At this stage, we are observing economic and social liberalization efforts and regional alliance projects throughout the world. In this very same process, we are also experiencing a more holistic concept called globalization, which covers rapid and simultaneous dissemination and integration of capital, labor, information and technology, world-wide. This globalization opened a new era where national market economies and local companies went into competition in the international arena. In this era, it became a necessity for the non-liberal economies to catch up with the developments in the international markets and be open to economic and political changes. These developments have brought along many radical economic and social changes throughout the world. Policies adopted in Turkey, with respect to the energy reform process, display a general tendency towards putting in place a legal framework that will support the implementation of good governance principles, and providing conformity with the relevant legislative infrastructure of both OECD and EU countries. Turkey has only limited reserves of oil and natural gas, but substantial reserves of coal, particularly lignite. Energy demand has grown at 4-5 % per annum over the past three decades and will continue to grow rapidly, which will require enormous investments in 2000 and 2020, with the most significant increase being that of natural gas. Because of its limited energy resources, Turkey is heavily dependent on imported oil and gas. There are major oil and gas pipelines going through Turkey and additional pipelines are being constructed or are being planned. There is some production of lignite which is used in power plants and industry. 73 % of the world's proven oil reserves and 72 % of the world's proven gas reserves are located in the surrounding regions of Turkey: Middle East, Caspian Region and Russia. This makes Turkey a crucial bridge between energy rich regions

  17. [Gender equality activity in the Bioimaging Society].

    Science.gov (United States)

    Suzaki, Etsuko

    2013-09-01

    Gender equality activity in the Bioimaging Society was initiated in 2005 when it joined the Japan Inter-Society Liaison Association Committee for Promoting Equal Participation of Men and Women in Science and Engineering (EPMEWSE). The Gender Equality Committee of the Bioimaging Society is acting on this issue by following the policy of the EPMEWSE, and has also been planning and conducting lectures at annual meetings of the society to gain the understanding, consents, and cooperation of the members of the society to become conscious of gender equality. Women's participation in the society has been promoted through the activities of the Gender Equality Committee, and the number of women officers in the society has since increased from two women out of 40 members in 2005 to five out of 44 in 2013. The activities of the Gender Equality Committee of the Japanese Association of Anatomists (JAA) have just started. There are more than 400 women belonging to the JAA. When these women members join together and collaborate, women's participation in the JAA will increase.

  18. Marriage equality is a mental health issue.

    Science.gov (United States)

    Kealy-Bateman, Warren; Pryor, Lisa

    2015-10-01

    We aim to review marriage equality in New Zealand and Australia and critically evaluate the health impact of such a legal change. We undertook a review of the literature using the search terms "marriage equality", "same sex marriage" and "gay marriage" in combination with "health", "wellbeing", "psych*", "mental illness" and "distress". This search included medical literature, legal literature and mass media. This review indicates that Lesbian, Gay, Bisexual, Transgender and Intersex (LGBTI) people disproportionately face negative health stressors and negative health events compared with the general population and this is related to the stress of being a stigmatised minority group. The evidence strongly supports the proposition that marriage equality is related to improved health outcomes. A diverse range of professional health groups advocate for the legislative progression to marriage equality. The authors found no evidence that marriage equality harms opposite-sex marriage. Marriage equality is still lacking in Australia and as a positive correlate of health should be strongly supported. © The Royal Australian and New Zealand College of Psychiatrists 2015.

  19. Mercury transformation and speciation in flue gases from anthropogenic emission sources: a critical review

    Science.gov (United States)

    Zhang, Lei; Wang, Shuxiao; Wu, Qingru; Wang, Fengyang; Lin, Che-Jen; Zhang, Leiming; Hui, Mulin; Yang, Mei; Su, Haitao; Hao, Jiming

    2016-02-01

    Mercury transformation mechanisms and speciation profiles are reviewed for mercury formed in and released from flue gases of coal-fired boilers, non-ferrous metal smelters, cement plants, iron and steel plants, waste incinerators, biomass burning and so on. Mercury in coal, ores, and other raw materials is released to flue gases in the form of Hg0 during combustion or smelting in boilers, kilns or furnaces. Decreasing temperature from over 800 °C to below 300 °C in flue gases leaving boilers, kilns or furnaces promotes homogeneous and heterogeneous oxidation of Hg0 to gaseous divalent mercury (Hg2+), with a portion of Hg2+ adsorbed onto fly ash to form particulate-bound mercury (Hgp). Halogen is the primary oxidizer for Hg0 in flue gases, and active components (e.g., TiO2, Fe2O3, etc.) on fly ash promote heterogeneous oxidation and adsorption processes. In addition to mercury removal, mercury transformation also occurs when passing through air pollution control devices (APCDs), affecting the mercury speciation in flue gases. In coal-fired power plants, selective catalytic reduction (SCR) system promotes mercury oxidation by 34-85 %, electrostatic precipitator (ESP) and fabric filter (FF) remove over 99 % of Hgp, and wet flue gas desulfurization system (WFGD) captures 60-95 % of Hg2+. In non-ferrous metal smelters, most Hg0 is converted to Hg2+ and removed in acid plants (APs). For cement clinker production, mercury cycling and operational conditions promote heterogeneous mercury oxidation and adsorption. The mercury speciation profiles in flue gases emitted to the atmosphere are determined by transformation mechanisms and mercury removal efficiencies by various APCDs. For all the sectors reviewed in this study, Hgp accounts for less than 5 % in flue gases. In China, mercury emission has a higher Hg0 fraction (66-82 % of total mercury) in flue gases from coal combustion, in contrast to a greater Hg2+ fraction (29-90 %) from non-ferrous metal smelting, cement and

  20. Purification of burned gases of domestic wastes; Moderna purificacion de gases quemados de las basuras domesticas

    Energy Technology Data Exchange (ETDEWEB)

    Gottschalk, J.; Buttman, P.; Johansson, T.

    1997-09-01

    The author presents the technology to reduce the emission from the burned gases purification of domestic wastes combustion. The technology was demonstrated in Hobec, Denmark, and developed in Germany. (Author)

  1. Biological processes for mitigation of greenhouse gases

    Energy Technology Data Exchange (ETDEWEB)

    Benemann, John R. [California Univ., Dept. of Plant and Microbial Biology, Berkeley, CA (United States)

    1999-07-01

    Biological processes driven by photosynthesis cycle through the atmosphere well over an order of magnitude more CO{sub 2} than is currently emitted from the combustion of fossils fuels. Already human activities control and appropriate almost half the primary photosynthetic productivity of the planet. Better management of natural and man-made ecosystems affords many opportunities for mitigation of greenhouse gases, through sink enhancements, source reduction and substitution of fossil fuels with biofuels. Biofuels can be recovered from most organic wastes, from agricultural and forestry residues, and from biomass produced solely for energy use. However, the currently low costs of fossil fuels limits the market for biofuels. Accounting for the greenhouse mitigation value of biofuels would significantly increase their contribution to world fuel suppliers, estimated to be currently equivalent to about 15% of fossil fuel usage. Another limiting factor in expanding the use of biofuels is the relatively low solar energy conversion efficiencies of photosynthesis. Currently well below 1% of solar energy is converted into biomass energy even by intensive agricultural or forestry systems, with peak conversion efficiencies about 2 to 3% for sugar cane or microalgae cultures. One approach to increase photosynthetic efficiencies, being developed at the University of California Berkeley, is to reduce the amount of light-gathering chlorophyll in microalgae and higher plants. This would reduce mutual shading and also increase photosynthetic efficiencies under full sunlight intensities. Estimates of the potential of photosynthetic greenhouse mitigation processes vary widely. However, even conservative estimates for biofuels substituting for fossil fuels project the potential to reduce a large fraction of current increases in atmospheric CO{sub 2} levels. Biofuels production will require integration with existing agronomic, forestry and animal husbandry systems, and improved

  2. 48 CFR 811.104-70 - Brand name or equal purchase descriptions.

    Science.gov (United States)

    2010-10-01

    ... 48 Federal Acquisition Regulations System 5 2010-10-01 2010-10-01 false Brand name or equal... Requirements Documents 811.104-70 Brand name or equal purchase descriptions. (a) The specification writer may use purchase descriptions that contain references to one or more brand name products only in...

  3. EVALUATION OF SIGNIFICANT ANTHROPOGENIC SOURCES OF RADIATIVELY IMPORTANT TRACE GASES

    Science.gov (United States)

    The report is an initial evaluation of significant anthropogenic sources of radiatively important trace gases. missions of greenhouse gases from human activities--including fossil fuel combustion, industrial/agricultural activities, and transportation--contribute to the increasin...

  4. 75 FR 57669 - Mandatory Reporting of Greenhouse Gases

    Science.gov (United States)

    2010-09-22

    ... Mandatory Reporting of Greenhouse Gases AGENCY: Environmental Protection Agency (EPA). ACTION: Final rule. SUMMARY: This action amends the Final Mandatory Reporting of Greenhouse Gases Rule to require reporters... Numbers GHG greenhouse gas GHGRP Greenhouse Gas Reporting Program HCFC hydrochlorofluorocarbon HFC...

  5. Geodesics in thermodynamic state spaces of quantum gases

    International Nuclear Information System (INIS)

    Oshima, H.; Obata, T.; Hara, H.

    2002-01-01

    The geodesics for ideal quantum gases are numerically studied. We show that 30 ideal quantum state is connected to an ideal classical state by geodesics and that the bundle of geodesics for Bose gases have a tendency of convergence

  6. If Canada is serious about reducing greenhouse gases, we need nuclear energy

    Energy Technology Data Exchange (ETDEWEB)

    Lemieux, C.

    2003-07-01

    Canada's energy options are reviewed in light of the need to find practical solutions to supply the nation's growing demand for power, coupled with equally pressing need to reduce greenhouse gas emissions to meet Kyoto commitments, and to do so without costing Canadians jobs and economic disaster. Among the options available -- renewable, hydro, fossil fuels, nuclear -- nuclear power is identified as the only one that promises to meet the growing demand for power without the practical, economic and environmental disadvantages associated with the alternatives. Based on Canadian experience with nuclear power in the past, it is pointed out that between 1971 and 2000 Canada, by using nuclear fuel, has averted the production of 32 million tonnes of acid gases, millions of tonnes of other pollutants and well over a billion tonnes of carbon dioxide, while producing only 14 per cent of its energy requirements from nuclear fuel. The principal argument made is that given our position as the world's leading supplier of uranium to electric utilities, the safety record of our CANDU reactors, and the fact that nuclear power is one of the cleanest large-scale energy source, nuclear power has the potential to make significant contribution to Canada's ability to meet its future energy requirements, and achieve the GHG emission reduction targets imposed by the Kyoto Agreement, without causing serious harm to the economy. The author goes as far as to say that without serious consideration being given to nuclear power, Canada has no chance even to come close to its Kyoto greenhouse emission targets without disastrous consequences to the economy.

  7. If Canada is serious about reducing greenhouse gases, we need nuclear energy

    International Nuclear Information System (INIS)

    Lemieux, C.

    2003-01-01

    Canada's energy options are reviewed in light of the need to find practical solutions to supply the nation's growing demand for power, coupled with equally pressing need to reduce greenhouse gas emissions to meet Kyoto commitments, and to do so without costing Canadians jobs and economic disaster. Among the options available - renewable, hydro, fossil fuels, nuclear -- nuclear power is identified as the only one that promises to meet the growing demand for power without the practical, economic and environmental disadvantages associated with the alternatives. Based on Canadian experience with nuclear power in the past, it is pointed out that between 1971 and 2000 Canada , by using nuclear fuel , has averted the production of 32 million tonnes of acid gases, millions of tonnes of other pollutants and well over a billion tonnes of carbon dioxide, while producing only 14 per cent of its energy requirements from nuclear fuel The principal argument made is that given our position as the world's leading supplier of uranium to electric utilities, the safety record of our CANDU reactors , and the fact that nuclear power is one of the cleanest large-scale energy source, nuclear power has the potential to make significant contribution to Canada's ability to meet its future energy requirements, and achieve the GHG emission reduction targets imposed by the Kyoto Agreement, without causing serious harm to the economy. The author goes as far as to say that without serious consideration being given to nuclear power, Canada has no chance even to come close to its Kyoto greenhouse emission targets without disastrous consequences to the economy. (author)

  8. Labor Market and Home Production: Are Men and Women Equal?

    Directory of Open Access Journals (Sweden)

    Regina Madalozzo

    2010-01-01

    Full Text Available Female labor market participation is one of the central investigation topics in feminist economics’ studies. Even after an increase in the labor market participation and the decrease in the wage gap between men and women, the latter still face great difficulties on being remunerated and promoted when compared to men. Neoclassical economic models cannot explain completely these differences without making use of strong hypothesis about individual preferences and family goals. This study has as the main objective to analyze difference on the housework participation as an influencer to different conditions in the labor market for men and women. Our results show that women still have a double work shift. Among our main conclusions, we can say that women benefit more from personal income increase than with labor market participation, because their bargain power within family increases and they can decrease their housework hours.

  9. Radiolytic generation of gases in reactors

    International Nuclear Information System (INIS)

    Ramshesh, V.; Venkateswarlu, K.S.

    1988-01-01

    Water or heavy water is used in different circuits in a reactor. Their most common use is as a moderator and/or as a coolant. Light water is used at other places such as in end shield, calandria vault etc., In the process they are exposed to intense ionizing radiation and undergo radiolytic degradation. The molecular produts of radiolysis are hydrogen, hydrogen peroxide and oxygen. As is commonly known if hydrogen is formed beyond a certain level, in the presence of oxygen it may lead to combustion or even explosion. Thus one should comprehend the basic principles of radiolysis and see whether the concentration of these gases under various conditions can be worked out. This report attempts to analyse in depth the radiolytic generation of gases in reactor systems. (author). 3 tabs

  10. Simulation of diffusion in concentrated lattice gases

    International Nuclear Information System (INIS)

    Kehr, K.W.

    1986-01-01

    Recently the diffusion of particles in lattice gases was studied extensively by theoretical methods and numerical simulations. This paper reviews work on collective and, in particular, on tracer diffusion. The diffusion of tagged particles is characterized by a correlation factor whose behavior as a function of concentration is now well understood. Also the detailed kinetics of the tracer transitions was investigated. A special case is the one-dimensional lattice gas where the tracer diffusion coefficient vanishes. An interesting extension is the case of tagged atoms with a different transition rate. This model allows to study various physical situations, including impurity diffusion, percolation, and diffusion in partially blocked lattices. Finally some recent work on diffusion in lattice gases under the influence of a drift field will be reported. (author)

  11. Functional renormalization and ultracold quantum gases

    International Nuclear Information System (INIS)

    Floerchinger, Stefan

    2010-01-01

    Modern techniques from quantum field theory are applied in this work to the description of ultracold quantum gases. This leads to a unified description of many phenomena including superfluidity for bosons and fermions, classical and quantum phase transitions, different dimensions, thermodynamic properties and few-body phenomena as bound state formation or the Efimov effect. The non-perturbative treatment with renormalization group flow equations can account for all known limiting cases by solving one single equation. It improves previous results quantitatively and brings qualitatively new insights. As an example, new quantum phase transitions are found for fermions with three spin states. Ultracold atomic gases can be seen as an interesting model for features of high energy physics and for condensed matter theory. The research reported in this thesis helps to solve the difficult complexity problem in modern theoretical physics. (orig.)

  12. Detecting Friedel oscillations in ultracold Fermi gases

    Science.gov (United States)

    Riechers, Keno; Hueck, Klaus; Luick, Niclas; Lompe, Thomas; Moritz, Henning

    2017-09-01

    Investigating Friedel oscillations in ultracold gases would complement the studies performed on solid state samples with scanning-tunneling microscopes. In atomic quantum gases interactions and external potentials can be tuned freely and the inherently slower dynamics allow to access non-equilibrium dynamics following a potential or interaction quench. Here, we examine how Friedel oscillations can be observed in current ultracold gas experiments under realistic conditions. To this aim we numerically calculate the amplitude of the Friedel oscillations which are induced by a potential barrier in a 1D Fermi gas and compare it to the expected atomic and photonic shot noise in a density measurement. We find that to detect Friedel oscillations the signal from several thousand one-dimensional systems has to be averaged. However, as up to 100 parallel one-dimensional systems can be prepared in a single run with present experiments, averaging over about 100 images is sufficient.

  13. Two-Dimensional Homogeneous Fermi Gases

    Science.gov (United States)

    Hueck, Klaus; Luick, Niclas; Sobirey, Lennart; Siegl, Jonas; Lompe, Thomas; Moritz, Henning

    2018-02-01

    We report on the experimental realization of homogeneous two-dimensional (2D) Fermi gases trapped in a box potential. In contrast to harmonically trapped gases, these homogeneous 2D systems are ideally suited to probe local as well as nonlocal properties of strongly interacting many-body systems. As a first benchmark experiment, we use a local probe to measure the density of a noninteracting 2D Fermi gas as a function of the chemical potential and find excellent agreement with the corresponding equation of state. We then perform matter wave focusing to extract the momentum distribution of the system and directly observe Pauli blocking in a near unity occupation of momentum states. Finally, we measure the momentum distribution of an interacting homogeneous 2D gas in the crossover between attractively interacting fermions and bosonic dimers.

  14. Comparing greenhouse gases for policy purposes

    International Nuclear Information System (INIS)

    Schmalensee, R.

    1993-01-01

    In order to derive optimal policies for greenhouse gas emissions control, the discounted marginal damages of emissions from different gases must be compared. The greenhouse warming potential (GWP) index, which is most often used to compare greenhouse gases, is not based on such a damage comparison. This essay presents assumptions under which ratios of gas-specific discounted marginal damages reduce to ratios of discounted marginal contributions to radiative forcing, where the discount rate is the difference between the discount rate relevant to climate-related damages and the rate of growth of marginal climate-related damages over time. If there are important gas-specific costs or benefits not tied to radiative forcing, however, such as direct effects of carbon dioxide on plant growth, there is in general no shortcut around explicit comparison of discounted net marginal damages. 16 refs

  15. Oxygen partial pressure sensor for gases

    International Nuclear Information System (INIS)

    Barbero, J.A.; Azcona, M.A.; Orce, A.

    1997-01-01

    Precise measurement of very low oxygen partial pressure is important in both laboratories and industries. Particularly in nuclear industry, it is relevant in the different steps of the nuclear fuel fabrication. It is presented an instrument which is handy and of easy construction, suitable for the measurement of oxygen partial pressure of gases, in the range of 10 -6 -1 atm. It is based on a solid electrolyte galvanic cell, using Yttria doped zirconia as a ceramic membrane. Through an indirect measurement and calibration, the instrument can be used to measure the content of free oxygen in liquids. It is a import feature in NPP instrumentation. The equipment was calibrated with mixtures of special nonreactive gases. (author). 5 refs

  16. Oxygen partial pressure sensor for gases

    Energy Technology Data Exchange (ETDEWEB)

    Barbero, J.A.; Azcona, M.A.; Orce, A. [Comision Nacional de Energia Atomica, San Carlos de Bariloche (Argentina). Centro Atomico Bariloche

    1997-10-01

    Precise measurement of very low oxygen partial pressure is important in both laboratories and industries. Particularly in nuclear industry, it is relevant in the different steps of the nuclear fuel fabrication. It is presented an instrument which is handy and of easy construction, suitable for the measurement of oxygen partial pressure of gases, in the range of 10{sup -6}-1 atm. It is based on a solid electrolyte galvanic cell, using Yttria doped zirconia as a ceramic membrane. Through an indirect measurement and calibration, the instrument can be used to measure the content of free oxygen in liquids. It is a import feature in NPP instrumentation. The equipment was calibrated with mixtures of special nonreactive gases. (author). 5 refs.

  17. Method for enhancing microbial utilization rates of gases using perfluorocarbons

    Science.gov (United States)

    Turick, C.E.

    1997-06-10

    A method of enhancing the bacterial reduction of industrial gases using perfluorocarbons (PFCs) is disclosed. Because perfluorocarbons (PFCs) allow for a much greater solubility of gases than water does, PFCs have the potential to deliver gases in higher concentrations to microorganisms when used as an additive to microbial growth media thereby increasing the rate of the industrial gas conversion to economically viable chemicals and gases. 3 figs.

  18. Domestic gender equality and childbearing in Sweden

    Directory of Open Access Journals (Sweden)

    Frances Goldscheider

    2013-12-01

    Full Text Available Background: Sweden, which is among the most gender-equal societies in the world, combines 'modern' family patterns such as unmarried cohabitation, delayed parenthood, high maternal labor force participation, and high break-up rates - all usually linked with low birth rates - with relatively high fertility. Sweden also has a high level of shared parental responsibility for home and children. Objective: After decades of late 20th century research showing that increasing gender equality in the workplace was linked with lower fertility, might gender equality in the home increase fertility? Methods: Using data from the Swedish Young Adult Panel Study (YAPS, we use Cox regression to examine the effects on first, second, and third births of 1 holding attitudes about sharing equally in the care of the home and children, and 2 actual sharing in these domestic tasks. Results: Our analysis shows that, measuring attitudes before the transition to parenthood and actual practice four years later, it is inconsistency between sharing attitudes and the actual division of housework that reduces the likelihood of continued childbearing, especially on second births among women. Conclusions: As women are most likely to confront an inconsistent situation, with egalitarian ideals in a household without equal sharing, it is clear that having a partner who does not share housework is depressing Swedish fertility.

  19. Investigating equality: The poverty and riches indices

    International Nuclear Information System (INIS)

    Eliazar, Iddo

    2016-01-01

    As noise is omnipresent, real-world quantities measured by scientists and engineers are commonly obtained in the form of statistical distributions. In turn, perhaps the most compact representation of a given statistical distribution is via the mean-variance approach: the mean manifesting the distribution’s ‘typical’ value, and the variance manifesting the magnitude of the distribution’s fluctuations about its mean. The mean-variance approach is based on an underlying Euclidean-geometry perspective. So very often real-world quantities of interest are non-negative sizes, and their measurements yield statistical size distributions. In this paper, and in the context of size distributions, we present an alternative to the Euclidean-based mean-variance approach: a mean-equality approach that is based on an underlying socioeconomic perspective. We establish two equality indices that score, on a unit-interval scale, the intrinsic ‘egalitarianism’ of size distributions: (i) the poverty equality index which is particularly sensitive to the existence of very small “poor” sizes; (ii) the riches equality index which is particularly sensitive to the existence of very large “rich” sizes. These equality indices, their properties, their computation, their application, and their connections to the mean-variance approach – are explored and described comprehensively.

  20. Role of buffer gases in optoacoustic spectroscopy

    International Nuclear Information System (INIS)

    Thomas III, L.J.; Kelly, M.J.; Amer, N.M.

    1978-01-01

    The dependence of an acoustically resonant optoacoustic signal on the molecular weight and thermodynamic and transport properpties of the buffer gas is reported. Our results show that careful selection of such gases can significantly increase the sensitivity and flexibility of optoacoustic spectroscopy. We also demonstrate that such thermodynamic quantities as γ (equivalentC/sub p//C/sub v/) and sound velocity can now be measured readily and accurately. Other potential applications are suggested

  1. Splitting of inviscid fluxes for real gases

    Science.gov (United States)

    Liou, Meng-Sing; Van Leer, Bram; Shuen, Jian-Shun

    1990-01-01

    Flux-vector and flux-difference splittings for the inviscid terms of the compressible flow equations are derived under the assumption of a general equation of state for a real gas in equilibrium. No necessary assumptions, approximations for auxiliary quantities are introduced. The formulas derived include several particular cases known for ideal gases and readily apply to curvilinear coordinates. Applications of the formulas in a TVD algorithm to one-dimensional shock-tube and nozzle problems show their quality and robustness.

  2. The Osher scheme for real gases

    Science.gov (United States)

    Suresh, Ambady; Liou, Meng-Sing

    1990-01-01

    An extension of Osher's approximate Riemann solver to include gases with an arbitrary equation of state is presented. By a judicious choice of thermodynamic variables, the Riemann invariats are reduced to quadratures which are then approximated numerically. The extension is rigorous and does not involve any further assumptions or approximations over the ideal gas case. Numerical results are presented to demonstrate the feasibility and accuracy of the proposed method.

  3. Effect of Greenhouse Gases Dissolved in Seawater.

    Science.gov (United States)

    Matsunaga, Shigeki

    2015-12-30

    A molecular dynamics simulation has been performed on the greenhouse gases carbon dioxide and methane dissolved in a sodium chloride aqueous solution, as a simple model of seawater. A carbon dioxide molecule is also treated as a hydrogen carbonate ion. The structure, coordination number, diffusion coefficient, shear viscosity, specific heat, and thermal conductivity of the solutions have been discussed. The anomalous behaviors of these properties, especially the negative pressure dependence of thermal conductivity, have been observed in the higher-pressure region.

  4. Paschen's law studies in cold gases

    OpenAIRE

    Massarczyk, R.; Chu, P.; Elliott, S. R.; Rielage, K.; Dugger, C.; Xu, W.

    2016-01-01

    The break-through voltage over small gaps has been investigated for differing gap distances, gas pressures, and gas temperatures in nitrogen, neon, argon and xenon gases. A deviation from Paschen's law at micro gap distances has been found. The breakthrough behavior of the fill gas in colder environments was tested as well. A significant shift of the curve relative to the results at room temperature was observed. The results can be explained by combining Paschen's law and the ideal gas law.

  5. Paschen's law studies in cold gases

    Science.gov (United States)

    Massarczyk, R.; Chu, P.; Dugger, C.; Elliott, S. R.; Rielage, K.; Xu, W.

    2017-06-01

    The break-through voltage behavior over small gaps has been investigated for differing gap distances, gas pressures, and gas temperatures in nitrogen, neon, argon and xenon gases. A deviation from Paschen's law at micro gap distances has been found. At lower temperatures, a significant shift of the curve relative to the results at room temperature was observed. This behavior can be explained by combining Paschen's law and the ideal gas law.

  6. Paschen's law studies in cold gases

    International Nuclear Information System (INIS)

    Massarczyk, R.; Chu, P.; Elliott, S.R.; Rielage, K.; Xu, W.; Dugger, C.

    2017-01-01

    The break-through voltage behavior over small gaps has been investigated for differing gap distances, gas pressures, and gas temperatures in nitrogen, neon, argon and xenon gases. A deviation from Paschen's law at micro gap distances has been found. At lower temperatures, a significant shift of the curve relative to the results at room temperature was observed. This behavior can be explained by combining Paschen's law and the ideal gas law.

  7. The effects of spin in gases

    International Nuclear Information System (INIS)

    Laloee, F.; Freed, J.H.

    1988-01-01

    Low-density gases, in which atoms are separated by large distances, have long provided an enjoyable playground for physicists. One might suppose the pleasure of the playground would by now have been exhausted by the very simplicity of low-density gases. Recent work by a number of investigators including the author shows that this is not the case low-density gases continue to serve up a rich variety of phenomena as well as counterintuitive surprises. In particular, the macroscopic properties of a gas composed of individual hydrogen or helium atoms can under special circumstances by changed dramatically by quantum-mechanical effects. According to quantum theory, the nucleus of an atom behaves in a way similar to a rotating top, which has angular momentum about its axis of rotation; that is, the nucleus has spin, known more precisely as spin angular momentum. If the atoms of a gas are spin-polarized, so that their nuclei all have their spins pointing in the same direction, the viscosity of the gas can be changed enormously and so can its ability to conduct heat. Quantum-mechanical correlations among the nuclei called spin waves, which up to now had been observed only in certain liquids and solids such as magnets, can also arise. The changes are large enough for one to say the quantum-mechanical effects have caused the gas to take on entirely new properties. In a certain sense it is amazing to think that polarizing the nuclear spins can have any effect on the macroscopic properties of the gas, since the nuclear spins are son weakly coupled to the outside world. Yet the observations are in full agreement with with theory. Moreover, because spin-polarized gases are still fairly simple systems, they can be understood in terms fundamental principles, something that is still not possible to do in the case of liquids and solids

  8. How to wrap up radioactive gases

    Energy Technology Data Exchange (ETDEWEB)

    Keller, C

    1982-04-01

    Operating nuclear power stations produces not only solid waste. Not so well known - but they should by no means be ignored - are the radioactive gases released during fission which somehow have to be retained and 'packaged'. Gas cylinders, such as those used for oxygen or compressed air, are unsuitable for this purpose. Ingenious chemical tricks have been thought up to press the gas - especially crypton-85 - into plastic material in which it remains captured right down to its molecular structure.

  9. Glass Membrane For Controlled Diffusion Of Gases

    Science.gov (United States)

    Shelby, James E.; Kenyon, Brian E.

    2001-05-15

    A glass structure for controlled permeability of gases includes a glass vessel. The glass vessel has walls and a hollow center for receiving a gas. The glass vessel contains a metal oxide dopant formed with at least one metal selected from the group consisting of transition metals and rare earth metals for controlling diffusion of the gas through the walls of the glass vessel. The vessel releases the gas through its walls upon exposure to a radiation source.

  10. Agreements on emission of greenhouse gases

    International Nuclear Information System (INIS)

    Aulstad, Johan Greger

    2001-01-01

    Agreements on emission of greenhouse gases is one of the instruments used by Norwegian authorities to meet their obligations with respect to the Climate Convention and the Kyoto Protocol. This book discusses the legal issues raised by these agreements. A main topic is how the industrial emissions conform to the Pollution Act. Does the Pollution Act apply to these emissions? What is the impact of the sanction rules in this act on the emissions? The book also deals with the following general questions that arise in connection with the application of public authority: (1) Can the administration grant concessions and permits in the form of agreements? (2) What commitments can be imposed on a private party by the administration by agreement? (3) Should the procedures set down in the Pollution Act and in the Public Administration Act be followed fully when the pollution authorities make agreements? Is the opportunity of the administration to reverse more restricted when they make agreements than when they make one-sided decisions? Although this discussion primarily deals with the emission of greenhouse gases, the reasoning and conclusions are relevant in many other types of agreements in which the public administration is one of the parties. The agreement that regulates the emissions of greenhouse gases from the Norwegian aluminium industry is described in a special section. The book also gives a brief account of how agreements are used in the Danish climate policy

  11. 30 CFR 75.322 - Harmful quantities of noxious gases.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 1 2010-07-01 2010-07-01 false Harmful quantities of noxious gases. 75.322... quantities of noxious gases. Concentrations of noxious or poisonous gases, other than carbon dioxide, shall... Governmental Industrial Hygienists in “Threshold Limit Values for Substance in Workroom Air” (1972). Detectors...

  12. 76 FR 73885 - Mandatory Reporting of Greenhouse Gases

    Science.gov (United States)

    2011-11-29

    ... Mandatory Reporting of Greenhouse Gases; Final Rule #0;#0;Federal Register / Vol. 76, No. 229 / Tuesday... 98 [EPA-HQ-OAR-2011-0147; FRL-9493-9] RIN 2060-AQ85 Mandatory Reporting of Greenhouse Gases AGENCY... the Mandatory Reporting of Greenhouse Gases Rule to correct certain technical and editorial errors...

  13. 76 FR 47391 - Mandatory Reporting of Greenhouse Gases

    Science.gov (United States)

    2011-08-04

    ... Mandatory Reporting of Greenhouse Gases; Proposed Rule #0;#0;Federal Register / Vol. 76, No. 150 / Thursday...-HQ-OAR-2011-0147; FRL-9443-1] RIN 2060-AQ85 Mandatory Reporting of Greenhouse Gases AGENCY... provisions in the Mandatory Reporting of Greenhouse Gases Rule to correct certain technical and editorial...

  14. Thermodynamics of Quantum Gases for the Entire Range of Temperature

    Science.gov (United States)

    Biswas, Shyamal; Jana, Debnarayan

    2012-01-01

    We have analytically explored the thermodynamics of free Bose and Fermi gases for the entire range of temperature, and have extended the same for harmonically trapped cases. We have obtained approximate chemical potentials for the quantum gases in closed forms of temperature so that the thermodynamic properties of the quantum gases become…

  15. On the Concept of Electrode to Discharge Phenomena in Surface Roughness With Reference Strongly Electronegative Gases

    DEFF Research Database (Denmark)

    McAllister, Iain Wilson

    1986-01-01

    The use of geometrically well-defined protrusions in studies es of the effects of electrode surface roughness upon the insulation strength of strongly electronegative gases is discussed. It is argued that, with respect to the roughness associated with production processes, the dimensions of artif...

  16. Thermodynamic model for swelling of unconfined coal due to adsorption of mixed gases

    NARCIS (Netherlands)

    Liu, J.; Peach, C.J.; Zhou, Hongwei; Spiers, C.J.

    2015-01-01

    Permeability evolution in coal seams during CO2-Enhanced Coalbed Methane (ECBM) production is strongly influenced by swelling/shrinkage effects related to sorption and desorption of both CO2 and CH4. Other gases, such as N2, have also been proposed for injection in ECBM operations. In addition,

  17. Passive smoking of cigarettes compared to inhalation of exhaust gases; Meeroken door uitlaatgassen

    Energy Technology Data Exchange (ETDEWEB)

    Van Doorn, R. [Afdeling Medische Milieukuinde, GGD Rotterdam en omstreken, Rotterdam (Netherlands)

    2002-09-01

    A comparison has been made between the consequences of inhaling exhaust gases and passive smoking of cigarettes. In both cases it concerns the inhalation of combustion products with irritating and toxic properties. [Dutch] Er is een vergelijking gemaakt tussen de gevolgen van het inademen van uitlaatgassen en het meeroken van sigaretten. In biede gevallen gaat het om verbrandingsproducten met irriterende en toxische eigenschappen.

  18. Dilemmas in the Danish approach to gender equality : gender equality without gender quota

    OpenAIRE

    ROLANDSEN AGUSTÍN, Lise; SIIM, Birte

    2015-01-01

    The paper addresses the dilemmas, contradictions and paradoxes in the Danish approach to gender quotas and gender equality and discusses the intersections of citizenship, democracy and gender justice. Gender research understands gender quota as a means to achieve equal rights, gender equality and gender parity. Gender theory has conceptualized gender parity as one step towards achieving gender justice in all arenas of social, political and economic life. The Danish cases illustrate that conte...

  19. Troubling gender equality: Revisiting gender equality work in the famous Nordic model countries

    OpenAIRE

    Edström, Charlotta; Brunila, Kristiina

    2016-01-01

    This article concerns gender equality work, that is, those educational and workplace activities that involve the promotion of gender equality. It is based on research conducted in Sweden and Finland, and focuses on the period during which the public sector has become more market-oriented and project-based all over the Nordic countries. The consequences of this development on gender equality work have not yet been thoroughly analysed. Our joint empirical analysis is based on discourse-analytic...

  20. Ethics, equality and evidence in health promotion

    DEFF Research Database (Denmark)

    Vallgårda, Signild

    2014-01-01

    Abstract Aim: The Danish National Board of Health has expressed its commitment to social equality in health, evidence-informed health promotion and public health ethics, and has issued guidelines for municipalities on health promotion, in Danish named prevention packages.The aim of this article...... is to analyse whether the Board of Health adheres to ideals of equality, evidence and ethics in these guidelines. Methods: An analysis to detect statements about equity, evidence and ethics in 10 health promotion packages directed at municipalities with the aim of guiding the municipalities towards evidence......-informed disease prevention and health promotion. Results: Despite declared intentions of prioritizing social equality in health, these intentions are largely absent from most of the packages.When health inequalities are mentioned, focus is on the disadvantaged or the marginalized. Several interventions...

  1. Channel Equalization Using Multilayer Perceptron Networks

    Directory of Open Access Journals (Sweden)

    Saba Baloch

    2012-07-01

    Full Text Available In most digital communication systems, bandwidth limited channel along with multipath propagation causes ISI (Inter Symbol Interference to occur. This phenomenon causes distortion of the given transmitted symbol due to other transmitted symbols. With the help of equalization ISI can be reduced. This paper presents a solution to the ISI problem by performing blind equalization using ANN (Artificial Neural Networks. The simulated network is a multilayer feedforward Perceptron ANN, which has been trained by utilizing the error back-propagation algorithm. The weights of the network are updated in accordance with training of the network. This paper presents a very effective method for blind channel equalization, being more efficient than the pre-existing algorithms. The obtained results show a visible reduction in the noise content.

  2. Experimental investigation of solid oxide fuel cells using biomass gasification producer gases

    Energy Technology Data Exchange (ETDEWEB)

    Norheim, Arnstein

    2005-07-01

    The main objective of this thesis is theoretical and experimental investigations related to utilisation of biomass gasification producer gases as fuel for Solid Oxide Fuel Cells (SOFC). Initial fundamental steps towards a future system of combined heat and power production based on biomass gasification and SOFC are performed and include: 1) Theoretical modeling of the composition of biomass gasification producer gases. 2) Experimental investigation of SOFC performance using biomass gasification producer gas as fuel. 3) Experimental investigation of SOFC performance using biomass gasification producer gas containing high sulphur concentration. The modeling of the composition of gasifier producer gas was performed using the program FactSage. The main objective was to investigate the amount and speciation of trace species in the producer gases as several parameters were varied. Thus, the composition at thermodynamic equilibrium of sulphur, chlorine, potassium, sodium and compounds of these were established. This was done for varying content of the trace species in the biomass material at different temperatures and fuel utilisation i.e. varying oxygen content in the producer gas. The temperature interval investigated was in the range of normal SOFC operation. It was found that sulphur is expected to be found as H2S irrespective of temperature and amount of sulphur. Only at very high fuel utilisation some S02 is formed. Important potassium containing compounds in the gas are gaseous KOH and K. When chlorine is present, the amount of KOH and K will decrease due to the formation of KCI. The level of sodium investigated here was low, but some Na, NaOH and NaCl is expected to be formed. Below a certain temperature, condensation of alkali rich carbonates may occur. The temperature at which condensation begins is mainly depending on the amount of potassium present; the condensation temperature increases with increasing potassium content. In the first experimental work

  3. Equal Work Require Equal Salary” – Part of the Principle of Equality Treatment between Men and Women

    Directory of Open Access Journals (Sweden)

    Carla Carmina Spiridon

    2009-12-01

    Full Text Available Enlarging the provisions of Universal Declaration of Human Rights, The Convention no. 111 from 1958 regarding discrimination in the field of employing manpower and practicing profession, , has pointed out the effect of discrimination: to suppress or to prejudice the equal opportunities or treatment in the field of employing manpower and practicing profession.

  4. All are equal, but some are more equal than others: Managerialism and gender equality in higher education in comparative perspective

    NARCIS (Netherlands)

    Teelken, J.C.; Deem, R.

    2013-01-01

    The main purpose of this paper is to investigate what impact new regimes of management and governance, including new managerialism, have had on perceptions of gender equality at universities in three Western European countries. While in accordance with national laws and EU directives, contemporary

  5. Equal task, equal exposure? Are men and women with the same tasks equally exposed to awkward working postures?

    NARCIS (Netherlands)

    Hooftman, W.E.; Beek, A.J. van der; Wal, B.G. van de; Knol, D.L.; Bongers, P.M.; Burdorf, A.; Mechelen, M. van

    2009-01-01

    The aim of the study was to determine whether men and woman with equal tasks perform these tasks in the same way. Video recordings of 37 male and 43 female workers in six task groups were observed, from which data regarding frequency and duration of exposure to awkward postures were derived. These

  6. All Are Equal, but Some Are More Equal than Others: Managerialism and Gender Equality in Higher Education in Comparative Perspective

    Science.gov (United States)

    Teelken, Christine; Deem, Rosemary

    2013-01-01

    The main purpose of this paper is to investigate what impact new regimes of management and governance, including new managerialism, have had on perceptions of gender equality at universities in three Western European countries. While in accordance with national laws and EU directives, contemporary current management approaches in universities…

  7. Environmental Isotope Characteristics of Landfill Leachates and Gases

    Science.gov (United States)

    Hackley, Keith C.; Liu, Chao-Li; Coleman, D.D.

    1996-01-01

    The isotopic characteristics of municipal landfill leachate and gases (carbon dioxide and methane) are unique relative to the aqueous and gaseous media in most other natural geologic environments. The ??13 C of the CO2 in landfills is significantly enriched in 13C, with values as high as +20??? reported. The ?? 13C and ??D values of the methane fall within a range of values representative of microbial methane produced primarily by the acetate-fermentation process. The ??D of landfill leachate is strongly enriched in deuterium, by approximately 30??? to nearly 60??? relative to local average precipitation values. This deuterium enrichment is undoubtedly due to the extensive production of microbial methane within the limited reservoir of a landfill. The concentration of the radiogenic isotopes, 14C and 3H, are significantly elevated in both landfill leachate and methane. The 14C values range between approximately 120 and 170 pMC and can be explained by the input of organic material that was affected by the increased 14C content of atmospheric CO2 caused by atmospheric testing of nuclear devices. The tritium measured in leachate, however, is often too high to be explained by previous atmospheric levels and must come from material buried within the landfill. The unique isotopic characteristics observed in landfill leachates and gases provide a very useful technique for confirming whether contamination is from a municipal landfill or some other local source.

  8. Regionally adaptive histogram equalization of the chest

    International Nuclear Information System (INIS)

    Sherrier, R.H.; Johnson, G.A.

    1986-01-01

    Advances in digital chest radiography have resulted in the acquisition of high-quality digital images of the human chest. With these advances, there arises a genuine need for image processing algorithms, specific to chest images. The author has implemented the technique of histogram equalization, noting the problems encountered when it is adapted to chest images. These problems have been successfully solved with a regionally adaptive histogram equalization method. Histograms are calculated locally and then modified according to both the mean pixel value of a given region and certain characteristics of the cumulative distribution function. The method allows certain regions of the chest radiograph to be enhanced differentially

  9. Trace substances in landfill gases. Evaluation and meaningful analysis. Spurenstoffe in Deponiegasen. Bewertung und sinnvolle Analyse

    Energy Technology Data Exchange (ETDEWEB)

    Eisenmann, R [Karlsruhe Univ. (T.H.) (Germany, F.R.). Engler-Bunte-Institut

    1989-06-01

    Many of the innumerable substances which may occur in landfill gases are to be considered as possibly dangerous; they lead to environmental problems due to their malodour or noxious combustion products. With respect to the evaluation of the traces of substances there is great unsecurity and often extreme requirements as to volume and quality of gas analyses have to be met. Generally it can be noticed that there are hazards emanating from landfill gases, but in comparison to other risks they are not excessive. The contribution shall help to clarify questions and furnish a basis for the practice-oriented and appropriate landfill gas analytics. (orig.).

  10. Low-cost process for hydrogen production

    Science.gov (United States)

    Cha, Chang Y.; Bauer, Hans F.; Grimes, Robert W.

    1993-01-01

    A method is provided for producing hydrogen and carbon black from hydrocarbon gases comprising mixing the hydrocarbon gases with a source of carbon and applying radiofrequency energy to the mixture. The hydrocarbon gases and the carbon can both be the products of gasification of coal, particularly the mild gasification of coal. A method is also provided for producing hydrogen an carbon monoxide by treating a mixture of hydrocarbon gases and steam with radio-frequency energy.

  11. Kinetic theory of nonideal gases and nonideal plasmas

    CERN Document Server

    Klimontovich, Yu L

    2013-01-01

    Kinetic Theory of Nonideal Gases and Nonideal Plasmas presents the fundamental aspects of the kinetic theory of gases and plasmas. The book consists of three parts, which attempts to present some of the ideas, methods and applications in the study of the kinetic processes in nonideal gases and plasmas. The first part focuses on the classical kinetic theory of nonideal gases. The second part discusses the classical kinetic theory of fully ionized plasmas. The last part is devoted to the quantum kinetic theory of nonideal gases and plasmas. A concluding chapter is included, which presents a shor

  12. Production of reduction gases: partial oxidation of hydrocarbons and coal

    Energy Technology Data Exchange (ETDEWEB)

    Tippmer, K

    1976-04-01

    After some general remarks on reduction gas and quality demands, the Texaco process of partial oxidation with scrubbing is dealt with. A comparison of current iron-sponge techniques shows that a heat demand below 3 M kcal/t Fe should be envisaged, which means that heavy fuel oil or coal should be used. The special features of oxygen generation, coal processing, demands made on fuel oil, gasoline, and natural gas, gas generation, soot recovery, hydrogen sulphide-carbon dioxide scrubbing, system Benfield HP process, recycle-carbon dioxide scrubbing, auxiliary steam system, gas preheating, recycle gas cooling and compression, process data and heat balances for natural gas (one-heat system) and heating fuel oil or naphtha (two-heat system) are given.

  13. The evolution of carbon-14 and tritium containing gases in a radioactive waste repository

    International Nuclear Information System (INIS)

    Jefferies, N.L.

    1990-04-01

    The principal processes which well lead to the formation of gases in a repository containing low- and intermediate-level radioactive waste have been identified as corrosion, microbiological activity and radiolysis. The largest contribution to gas production is from hydrogen, generated from anaerobic corrosion of metallic components of the waste. Substitution of the active isotopes carbon-14 and hydrogen-3 (tritium) into the bulk gases, H 2 CO 2 and CH 4 may result in a radiological hazard to man. The purpose of this paper is to assess the mechanisms by which C-14 and tritium in solid low- and intermediate-level wastes are partitioned into gases reduced by corrosion and microbial processes. (author)

  14. Efficiency of utilization of heat of moisture from exhaust gases of heat HRSG of CCGT

    Directory of Open Access Journals (Sweden)

    Galashov Nikolay

    2017-01-01

    Full Text Available The paper discusses the technology of utilizing the heat of exhaust gas moisture from heat recovery steam gases (HRSG of combined-cycle gas turbine (CCGT. Particular attention focused on the influence of the excess air factor on the trapping of the moisture of the exhaust gases, as in the HRSG of the CCGT its value varies over a wider range than in the steam boilers of the TPP. For the research, has been developed a mathematical model that allows to determine the volumes of combustion products and the amount of water vapor produced according to a given composition of the burned gas and determine the amount of moisture that will be obtained as a result of condensation at a given temperature of the flue gases at the outlet of the condensation heat exchanger (CHE. To calculate the efficiency of the HRSG taking into account the heat of condensation of moisture in the CHE an equation is derived.

  15. The emissions of greenhouse gases are reduced by a new proposal for trade of quotas

    International Nuclear Information System (INIS)

    2004-01-01

    The emission quota system will stimulate enterprises that do not currently have to pay a CO 2 tax and which are not subjected to any other political instrument to cut their emissions of greenhouse gases. Consequently, the main part of the total Norwegian emission of greenhouse gases will be covered by climate policy instruments. The quota system enters into force on January 1, 2005, from which date the EU quota system will also be in force. The quota system will comprise CO 2 emissions from oil refineries, iron and steel manufacturers, producers of cement, lime, glass and ceramic products, and certain energy plants. Not all firms that are obliged to obtain quotas will receive as many quotas as they are expected to need. Norway introduced a CO 2 tax in 1991 and is among the countries with the strongest and most extensive political instruments against emission of greenhouse gases

  16. Study of greenhouse gases reduction alternatives for the exploitation of non conventional oil sands in Canada

    Energy Technology Data Exchange (ETDEWEB)

    Bouchonneau, Deborah [Institut Francais du Petrole (IFP), Paris (France)

    2008-07-01

    High energy prices and greenhouse gases reduction represent the main challenges the current worldwide energetic situation has to face. As a consequence, paradox strategies can be highlighted: oil prices are sufficiently high to exploit non conventional oil resources, like extra heavy oils and oil sands. But the production of these resources emits larger GHG than the conventional oil path and implies other major environmental issues (water management, risks of soil pollution, destruction of the boreal forest), incompatible with the rules validated by the protocol of Kyoto. At the light of the new greenhouse gases reduction regulation framework announced by the Canadian Federal government, this work focuses on the study of greenhouse gases reduction alternatives applied to the non conventional oil sands exploitation in Canada. (author)

  17. Isotopic composition of carbon of natural gases in the sedimentary basins of Kamchatka and Chukotka

    Energy Technology Data Exchange (ETDEWEB)

    Lobkov, V.A.; Kudriavtseva, E.I.

    1981-01-01

    A study was carried out on the chemical and isotopic compositions of carbon of natural gases, which are prospective for oil and gas structures. An isotopic composition of the carbon of gases, covered by wells in possible oil and gas bearing basins (Eastern Kamchatka Central Kamchatka, Western Kamchatka, Anadyrsk, and Khatyrsk), created by terrigenic rock of the cretaceous, paleogenic, and neogenic ages, with dimensions of three to six kilometers, is presented. Investigation is made of the isotopic carbon of methane, ethane, and propane in 36 gas specimens. The plan of the distribution of the tested structures is shown, and an analysis is given of the chemical and isotopic composition of carbon of the prospected areas of Kamchatka and Chukotka and the interconnection of the isotopic composition of the carbon of methane with ethane and propane. A supposition is made concerning the existence of a single equilibrious volumetric system of CH/sub 4/--C/sub 2/H/sub 6/--C/sub 3/H/sub 8/--CO/sub 2/, in which ethane and propane are by-products, and owing to this, equilibrium establish according to this more slowly. The study of the isotopic composition of carbon of methane shows, that at various areas of depth formation of hydrocarbon gases is different. A conclusion is made that the gases formed at high temperatures. This points to a significant distance in the vertical migration of gases in the given region.

  18. Source placement for equalization in small enclosures

    DEFF Research Database (Denmark)

    Stefanakis, Nick; Sarris, J.; Cambourakis, G.

    2008-01-01

    ) but not with those that will deteriorate it (the "undesired" modes). Simulation results in rectangular rooms and in a car cavity show the benefits of source placement in terms of reduced overall error and increased spatial robustness in the equalization process. Additional benefits, which can be derived by proper...

  19. Caring Fathers and Gender (In)Equality?

    Czech Academy of Sciences Publication Activity Database

    Maříková, Hana

    2008-01-01

    Roč. 48, č. 162 (2008), s. 135-152 ISSN 1231-1413 R&D Projects: GA AV ČR IAA700280504 Institutional research plan: CEZ:AV0Z70280505 Keywords : fathering * gender in/equality * hegemonic masculinity * shared parenting Subject RIV: AO - Sociology, Demography Impact factor: 0.118, year: 2008

  20. Political Liberalism, Linguistic Diversity and Equal Treatment

    Science.gov (United States)

    Bonotti, Matteo

    2017-01-01

    This article explores the implications of John Rawls' political liberalism for linguistic diversity and language policy, by focusing on the following question: what kind(s) of equality between speakers of different languages and with different linguistic identities should the state guarantee under political liberalism? The article makes three…

  1. Gender Equality in Education: Definitions and Measurements

    Science.gov (United States)

    Subrahmanian, R.

    2005-01-01

    International consensus on education priorities accords an important place to achieving gender justice in the educational sphere. Both the Dakar 'Education for All' goals and the Millennium Development goals emphasise two goals, in this regard. These two goals are distinguished as gender parity goals [achieving equal participation of girls and…

  2. Reflections: The Worldwide Commitment to Educational Equality.

    Science.gov (United States)

    Meyer, John W.

    2001-01-01

    Comments on articles appearing in the 2001 theme issue of Sociology of Education. Considers the nature and impact of the widespread cultural commitment to educational equality. Discusses other aspects of education not emphasized in this issue, such as the implications of racial inequality, credentialism, and educational organization (CAJ)

  3. Equality, self‐respect and voluntary separation

    NARCIS (Netherlands)

    Merry, M.S.

    2012-01-01

    This paper argues that self‐respect constitutes an important value, and further, an important basis for equality. It also argues that under conditions of inequality‐producing segregation, voluntary separation in schooling may be more likely to provide the resources necessary for self‐respect. A

  4. Equalization in Aeronautical Telemetry Using Multiple Antennas

    Science.gov (United States)

    2014-04-01

    such an interval is assumed, although we won’t complicate the notation to make this explicit. 3In the traditional TR-STBC system, ρ = 1/2 is included...linear, with or without noise whitening ) with the usual performance-complexity tradeoffs. Here, we apply the approximate MMSE equalizer introduced in

  5. Emancipation and Equality: A Critical Genealogy

    NARCIS (Netherlands)

    Scott, Joan Wallach

    2012-01-01

    I have been suggesting that the deployment of the language of sexual emancipation and gender equality to dismiss Muslim claims for recognition as full members of the nation-states of Western Europe in which so many have now for so long resided, needs to be read not simply as Islamophobia (which

  6. Great Constitutional Ideas: Justice, Equality, and Property.

    Science.gov (United States)

    Starr, Isidore

    1987-01-01

    Examines the ideas of justice, equality, and property as they are represented in the Declaration of Independence, the U.S. Constitution and the Bill of Rights. Discusses how these ideas affect the way public schools operate and the lessons educators teach or don't teach about our society. Includes ideas for classroom activities. (JDH)

  7. Implementing Democratic Equality in Political Parties

    DEFF Research Database (Denmark)

    Bolleyer, Nicole; von Nostitz, Felix-Christopher; Little, Conor

    2015-01-01

    This article theorises and empirically assesses some important intra-organisational implications of maximising democratic equality in political parties both between followers and members and between members and elites. They include weak member commitment, passivity of the rank-and-file membership...

  8. Nonlinear Equalization of Microwave Photonic Links

    Science.gov (United States)

    2016-10-31

    1][2] [3] (2) 123 is a combinatorial factor describing the number of unique permutations of frequency indicies...nonlinear equalizer works on the entire Nyquist band and is synthesized directly from mathematical requirements instead of using best- fit methods

  9. Gender Equality in Academia: A Critical Reflection

    Science.gov (United States)

    Winchester, Hilary P. M.; Browning, Lynette

    2015-01-01

    Gender equality in academia has been monitored in Australia for the past three decades so it is timely to reflect on what progress has been made, what works, and what challenges remain. When data were first published on the gender composition of staff in Australian universities in the mid-1980s women comprised 20 per cent of academic staff and…

  10. Gender Equality Policies and Higher Education Careers

    Science.gov (United States)

    Berggren, Caroline

    2011-01-01

    Gender equality policies regulate the Swedish labour market, including higher education. This study analyses and discusses the career development of postgraduate students in the light of labour market influences. The principle of gender separation is used to understand these effects. Swedish register data encompassing information on 585…

  11. Educational Technology: A Presupposition of Equality?

    Science.gov (United States)

    Orlando, Joanne

    2014-01-01

    The work of philosopher Jacques Rancière is used conceptually and methodologically to frame an exploration of the driving interests in educational technology policy and the sanctioning of particular discursive constructions of pedagogy that result. In line with Rancière's thinking, the starting point for this analysis is that of equality--that…

  12. Leaky Zero-Forcing Adaptive Equalization

    NARCIS (Netherlands)

    Bergmans, J.W.M.; Lin, M.Y.

    2004-01-01

    Zero-forcing equalizer adaptation schemes are attractive because of their simplicity. We study their steady-state solution, and find that it is more poorly conditioned than that of least mean-square adaptation schemes. A simple yet effective solution to this problem, based on tap leakage, is

  13. Turbo Equalization for Digital Coherent Receivers

    DEFF Research Database (Denmark)

    Arlunno, Valeria; Caballero Jambrina, Antonio; Borkowski, Robert

    2014-01-01

    . In this paper, it is demonstrated that Turbo Equalization routines can be used to mitigate performance degradations stemming from optical fiber propagation effects both in optical fiber dispersion managed and unmanaged coherent detection links. The effectiveness of this solution is analyzed both numerically...

  14. All About Audio Equalization: Solutions and Frontiers

    Directory of Open Access Journals (Sweden)

    Vesa Välimäki

    2016-05-01

    Full Text Available Audio equalization is a vast and active research area. The extent of research means that one often cannot identify the preferred technique for a particular problem. This review paper bridges those gaps, systemically providing a deep understanding of the problems and approaches in audio equalization, their relative merits and applications. Digital signal processing techniques for modifying the spectral balance in audio signals and applications of these techniques are reviewed, ranging from classic equalizers to emerging designs based on new advances in signal processing and machine learning. Emphasis is placed on putting the range of approaches within a common mathematical and conceptual framework. The application areas discussed herein are diverse, and include well-defined, solvable problems of filter design subject to constraints, as well as newly emerging challenges that touch on problems in semantics, perception and human computer interaction. Case studies are given in order to illustrate key concepts and how they are applied in practice. We also recommend preferred signal processing approaches for important audio equalization problems. Finally, we discuss current challenges and the uncharted frontiers in this field. The source code for methods discussed in this paper is made available at https://code.soundsoftware.ac.uk/projects/allaboutaudioeq.

  15. Asynchronous zero-forcing adaptive equalization

    NARCIS (Netherlands)

    Bergmans, J.W.M.; Pozidis, H.; Lin, M.Y.

    2005-01-01

    Digital data receivers often operate at a fixed sampling rate 1/Ts that is asynchronous to the baud rate 1/T. A digital equalizer that processes the incoming signal will also be asynchronous, and its adaptation is commonly based on extensions of the LMS algorithm. In this paper, we develop and

  16. An Equal Employment Opportunity Sensitivity Workshop

    Science.gov (United States)

    Patten, Thomas H., Jr.; Dorey, Lester E.

    1972-01-01

    The equal employment opportunity sensitivity workshop seems to be a useful training device for getting an organization started on developing black and white change agents. A report on the establishment of such a workshop at the U.S. Army Tank Automotive Command (TACOM). Includes charts of design, characteristics, analysis of results, program…

  17. Blind equalization with criterion with memory nonlinearity

    Science.gov (United States)

    Chen, Yuanjie; Nikias, Chrysostomos L.; Proakis, John G.

    1992-06-01

    Blind equalization methods usually combat the linear distortion caused by a nonideal channel via a transversal filter, without resorting to the a priori known training sequences. We introduce a new criterion with memory nonlinearity (CRIMNO) for the blind equalization problem. The basic idea of this criterion is to augment the Godard [or constant modulus algorithm (CMA)] cost function with additional terms that penalize the autocorrelations of the equalizer outputs. Several variations of the CRIMNO algorithms are derived, with the variations dependent on (1) whether the empirical averages or the single point estimates are used to approximate the expectations, (2) whether the recent or the delayed equalizer coefficients are used, and (3) whether the weights applied to the autocorrelation terms are fixed or are allowed to adapt. Simulation experiments show that the CRIMNO algorithm, and especially its adaptive weight version, exhibits faster convergence speed than the Godard (or CMA) algorithm. Extensions of the CRIMNO criterion to accommodate the case of correlated inputs to the channel are also presented.

  18. Mapping Students' Spoken Conceptions of Equality

    Science.gov (United States)

    Anakin, Megan

    2013-01-01

    This study expands contemporary theorising about students' conceptions of equality. A nationally representative sample of New Zealand students' were asked to provide a spoken numerical response and an explanation as they solved an arithmetic additive missing number problem. Students' responses were conceptualised as acts of communication and…

  19. What Is Equality of Opportunity in Education?

    Science.gov (United States)

    Lazenby, Hugh

    2016-01-01

    There is widespread disagreement about what equality of opportunity in education requires. For some it is that each child is legally permitted to go to school. For others it is that each child receives the same educational resources. Further interpretations abound. This fact presents a problem: when politicians or academics claim they are in…

  20. CULTURE, TRADITION, CUSTOM, LAW AND GENDER EQUALITY

    African Journals Online (AJOL)

    JMaluleke

    2005-10-18

    Oct 18, 2005 ... CULTURE, TRADITION, CUSTOM, LAW AND GENDER EQUALITY .... supremacy (sections 1(c) and 2 of the Constitution), and provides that any law ... protecting polygamy as well as related practices such as 'spouse inheritance', .... This school of thought argues that the practice of virginity testing puts the.

  1. The Colour of Equality : Racial Classification and Natural Equality in Enlightenment Encyclopaedias

    NARCIS (Netherlands)

    Vartija, D.J.

    2018-01-01

    While it may seem obvious that human beings should be treated equally before the law and given equal opportunities to succeed, much of recorded history actually demonstrates the exact opposite: hierarchy and innate inequalities were generally seen as both natural and inevitable. It was only during

  2. Equal pay for work of equal value in terms of the Employment Equity ...

    African Journals Online (AJOL)

    Equal pay for work of equal value in terms of the Employment Equity Act 55 of 1998: lessons from the International Labour Organisation and the United Kingdom. ... Alternatively, you can download the PDF file directly to your computer, from where it can be opened using a PDF reader. To download the PDF, click the ...

  3. Troubling Gender Equality: Revisiting Gender Equality Work in the Famous Nordic Model Countries

    Science.gov (United States)

    Edström, Charlotta; Brunila, Kristiina

    2016-01-01

    This article concerns gender equality work, that is, those educational and workplace activities that involve the promotion of gender equality. It is based on research conducted in Sweden and Finland, and focuses on the period during which the public sector has become more market-oriented and project-based all over the Nordic countries. The…

  4. Module 11: Gender Equality & Social Exclusion Issues in Rural Development

    OpenAIRE

    Kenny, Michael

    2003-01-01

    1.1 Introduction 1.2 The Equality Argument 1.3 Equality and the Culture of Contentment 1.4 Rawls and the Theory of a Just Society 1.5 Equal Opportunities and the Equality Continuum 1.6 The Equality Context

  5. Avaliação das silagens de capim-elefante aditivadas com nabo forrageiro, pinhão manso e tremoço, pela técnica de produção de gases Evaluation of elephant grass silages with forage radish, jatropha and lupine cakes as additives by the gas production technique

    Directory of Open Access Journals (Sweden)

    Arnaldo Prata Neiva Júnior

    2010-08-01

    production technique. The experiment was developed in the Animal Nutrition Laboratory of the Center of Nuclear Energy in Agriculture (Center Centro de Energia Nuclear na Agricultura of São Paulo University (LANA/CENA/USP. As donors of rumen liquid, two sheep of the Santa Ines breed, males, adults and fitted with permanent rumen cannula were used. The donating animals' feeding consisted of cultivated grass forage and a supplementation ate the end of day with Tifton hay, commercial concentrate and mineral salt at will. The substrates were dried at 60ºC, ground in Willey type mill fitted with a sieve with perforations of 2 mm. The gases produced during the different fermentation periods (0, 4, 8, 12, 24, 36, 48, 72 and 96 h were measured with a transducer - pressure measurer. The experiment was set up according to a randomized block design in which the treatments were arranged in a split plot in time. The greatest values of gas production were found for the treatments where lupine cake was added when compared with the other cakes. That originated from the fact that lupine cake presented lower fiber content, enabling increased rumen fermentation and, hence, higher gas production in relation to other feeds with a greater ratio of structural carbohydrates (cell wall. The degradation rate of the soluble fraction of dry matter was lower for 8% TNF and 11% TPM in relation to the other silages studied. Significant differences were found for the TNF, TPM and TT at the different levels relative to the amount of gas in 96 h of incubation (P<0.05. In all the treatments, except in those TT was added, there was decrease (P<0.05 in the average degradability values of dry matter at 96 hours as the level of inclusion of the cakes was increased. The elephant grass silages added with forage radish and lupine cakes at the different levels presented higher rates of degradation and higher gas production than those added with Jatropha.

  6. Irradiation technologies used for combustion gases and diluted sulfurous gases decontamination

    International Nuclear Information System (INIS)

    Villanueva Z, Loreto

    1998-01-01

    A brief description of irradiation technology used for ambient decontamination is presented here. The system is adequate fort gas and liquid effluents and solid wastes. In particular, the characteristics and applications of the irradiation done with an electron beam to gas effluent is described, mainly to clean combustion gases and other industrial gases containing sulfur and nitrogen oxides, S O x and N O x , respectively. This technology permits the remove of these contaminants and the acquisition of a solid byproduct, an ammonia sulfate-nitrate, apt for fertilizer applications. (author)

  7. Gender Equality a case study of Sweden : Gender Equality Gender Equity and policies of combating inequality at workplace to make the society equal.

    OpenAIRE

    Sultan, Tipu

    2010-01-01

    The paper analyses Gender Equality, Gender Equity and policies of combating inequality at workplace to make the society equal as a case study of Sweden. The aim of paper is see the gender equality, gender equity, discrimination against women at workplace and to describe the policies combating inequality in the welfare state of Sweden. This work highlights the gender equality in terms of institutionalizing gender equality, gender equity, gender and pay gap, parental leave, gender and the pensi...

  8. Diffusive retention of atmospheric gases in chert

    Science.gov (United States)

    Pettitt, E.; Cherniak, D. J.; Watson, E. B.; Schaller, M. F.

    2016-12-01

    Throughout Earth's history, the volatile contents (N2, CO2, Ar) of both deep and shallow terrestrial reservoirs has been dynamic. Volatiles are important chemical constituents because they play a significant role in regulating Earth's climate, mediating the evolution of complex life, and controlling the properties of minerals and rocks. Estimating levels of atmospheric volatiles in the deep geological past requires interrogation of materials that have acquired and retained a chemical memory from that time. Cherts have the potential to trap atmospheric components during formation and later release those gases for analysis in the laboratory. However, cherts have been underexploited in this regard, partly because their ability to retain a record of volatile components has not been adequately evaluated. Before cherts can be reliably used as indicators of past levels of major atmospheric gases, it is crucial that we understand the diffusive retentiveness of these cryptocrystalline silica phases. As the first step toward quantifying the diffusivity and solubility of carbon dioxide and nitrogen in chert, we have performed 1-atmosphere diffusive-uptake experiments at temperatures up to 450°C. Depth profiles of in-diffusing gases are measured by nuclear reaction analysis (NRA) to help us understand the molecular-scale transport of volatiles and thus the validity of using chert-bound volatiles to record information about Earth history. Data collected to date suggest that at least some cherts are ideal storage containers and can retain volatiles for a geologically long time. In addition to these diffusion experiments, preliminary online-crush fast-scan measurements using a quadrupole mass spectrometer indicate that atmospheric volatiles are released upon crushing various chert samples. By coupling such volatile-release measurements made by mass spectrometry with diffusion experiments, we are uniquely able to address the storage and fidelity of volatiles bound in crustal

  9. Per capita emissions of greenhouse gases and international trade

    International Nuclear Information System (INIS)

    Karman, D.; Baptiste, S.

    1994-01-01

    The role played by international trade in Canada's emissions of greenhouse gases is investigated. Data used in the study include Environment Canada greenhouse gas emission estimates for 1990, a Statistics Canada input-output model linking greenhouse gas emissions to economic activity in different sectors, and monetary statistics on imports and exports. Subject to some simplifying assumptions, it is estimated that nearly 20% of Canada's greenhouse gas emissions can be attributed to the production of commodities destined for export to other countries. If the same greenhouse gas emission intensities are assumed for Canada's imports, the greenhouse gas emissions due to Canada's net trade is nearly 7% of the 660 megatonnes of CO 2 equivalent emissions for 1990. Commodities from natural resource exploitation head the list of greenhouse gas emissions attributed to international trade, as expected from their large export volumes and large greenhouse gas emission intensities. 4 refs., 1 fig

  10. Stopping power for heavy ions in gases: a comparative study

    International Nuclear Information System (INIS)

    Diwan, P.K.; Singh, Lakhwant; Singh, Gurinder; Shyam Kumar

    1999-01-01

    The accurate knowledge of stopping power for heavy ions in gases is of paramount importance in nuclear reaction studies for the identification of reaction products involving ΔE-E telescope detectors. In the present work, it has been calculated the stopping power values for different heavy ions, such as Ne, Ar, Cu, Kr and Ag in various gas absorbers like H 2 , He, N 2 , Ne, Ar, Kr and Xe in the energy domain ∼ 2.5-6 MeV/n using the SRIM-98 code recently developed by Ziegler and the formulations of Benton and Henke, Hubert et al, Mukherjee and Nayak and Northcliffe and Schilling. This study has been undertaken in order to establish the validity of various semiempirical formulations for gas targets

  11. Computer exergonomics of power plants without exhaust gases

    Energy Technology Data Exchange (ETDEWEB)

    Yantovskii, E I; Zvagolsky, K N; Gavrilenko, V A [Russian Academy of Sciences, Moscow (Russian Federation). Inst. for Energy Research

    1992-01-01

    The outlines and preliminary evaluations of some power cycles are presented. Instead of the external combustion, the internal one in artificial air, the mixture of oxygen in flue gases, is proposed. It seems to be a radical solution to the problem of atmospheric protection due to transfer of all the emissions to brine flows in the hydrolithosphere. The use of new, steam-like turbines with elevated temperatures as in modern gas turbines gives the hope to compensate the efficiency decline, caused by oxygen production. All the evaluations are restricted by the thermodynamics only, without any cost appraisal. Use is made of the exergy analysis branch, referred to as exergonomics. 11 refs., 7 figs., 2 tabs.

  12. Turnover and transport of greenhouse gases in a Danish wetland

    DEFF Research Database (Denmark)

    Jørgensen, Christian Juncher

    2011-01-01

    involving plants, soil and microorganisms. These processes are regulated by different physio-chemical drivers such as soil moisture content, soil temperature, nutrient and oxygen (O2) availability. In wetlands, the position of the free standing water level (WL) influences the spatiotemporal variation...... in these drivers, thereby influencing the net emission or uptake of greenhouse gas. In this PhD thesis the complex aspects in the exchange of N2O across the soil-atmosphere is investigated with special focus on the spatiotemporal variations in drivers for N2O production and consumption in the soil...... net N2O dynamics. Similarly, plant-mediated gas transport by the subsurface aerating macrophyte Phalaris arundinacea played a major part in regulating and facilitating emissions of greenhouse gases across the soil-atmosphere interface. It is concluded that the spatiotemporal distribution of dominating...

  13. Treatment and storage of radioactive gases from nuclear facilities

    International Nuclear Information System (INIS)

    Johannsen, K.H.; Schwarzbach, R.

    1980-01-01

    Treatment of exhaust air from nuclear facilities aimed at retaining or separating the radionuclides of iodine, xenon, and krypton as well as of tritium and carbon-14 and their storage are of special interest in connection with increasing utilization of nuclear power in order to reduce releases of radioactive materials to the atmosphere. The state of the art and applicability of potential processes of separating volatile fission and activation products from nuclear power stations and reprocessing plants are reviewed. Possibilities of ultimate storage are presented. An evaluation of the current stage of development shows that processes for effective separation of radioactive gases are available. Recent works are focused on economy and safety optimization. Long-term storage, in particular of extremely long-lived radionuclides, needs further investigation. (author)

  14. Apparatus for studying the diffusion of rare gases in stainless steel

    International Nuclear Information System (INIS)

    Stohr, J.A.; Alfille, L.

    1959-01-01

    This apparatus enables measurements to be carried out on the diffusion of gaseous fission products and of gases in general across thin metallic walls at high temperatures. This work was initially intended to solve the problems involved in systems for detecting the rupture of a fuel element can (D.R.G.) by the diffusion of fission products through the cans at high temperatures. The extension of the work to other fields is envisaged. (author) [fr

  15. Method for detecting trace impurities in gases

    Science.gov (United States)

    Freund, S.M.; Maier, W.B. II; Holland, R.F.; Beattie, W.H.

    A technique for considerably improving the sensitivity and specificity of infrared spectrometry as applied to quantitative determination of trace impurities in various carrier or solvent gases is presented. A gas to be examined for impurities is liquefied and infrared absorption spectra of the liquid are obtained. Spectral simplification and number densities of impurities in the optical path are substantially higher than are obtainable in similar gas-phase analyses. Carbon dioxide impurity (approx. 2 ppM) present in commercial Xe and ppM levels of Freon 12 and vinyl chloride added to liquefied air are used to illustrate the method.

  16. Positron scattering from noble gases future prospects

    Energy Technology Data Exchange (ETDEWEB)

    Jones, A C L; Caradonna, P; Makochekanwa, C; Slaughter, D S; Sullivan, J P; Buckman, S J [Centre for Antimatter-Matter Studies, Research School of Physics and Engineering, Australian National University, Canberra, ACT (Australia); Mitroy, J, E-mail: acj107@rsphysse.anu.edu.a [Faculty of Education Health and Science, Charles Darwin University, NT (Australia)

    2009-11-01

    Recent results for positron scattering from noble gases over an energy range from 0.5 to 60eV are presented. Measurements include the grand total ({sigma}{sub GT}), Ps formation ({sigma}{sub Ps}) and Grand total - Ps formation (({sigma}{sub GT}-P{sub s}) cross sections. Some preliminary DCS results will also be presented. Work on a formulation of modified effective range theory (MERT) is being undertaken to determine the value of the scattering length which may be useful for identifying a bound state. Plans for experiments on metal atoms will be outlined.

  17. Characteristic of combustion of Colombian gases

    International Nuclear Information System (INIS)

    Gil B, Edison; Maya, Ruben; Andres, Amel A.

    1996-01-01

    The variety of gas locations in the country, makes that the gas that will be distributed by the net of present gas pipeline a very different composition, what bears to that these they behave in a different way during its use. In this work the main characteristics of the combustion are calculated for the Colombian gases, basically the properties of the combustion and the characteristics of the smoke, as basic information for the design and operation of the gas teams and their certification. These properties were calculated with the special help software for combustion developed by the authors

  18. Effect of Greenhouse Gases Dissolved in Seawater

    Directory of Open Access Journals (Sweden)

    Shigeki Matsunaga

    2015-12-01

    Full Text Available A molecular dynamics simulation has been performed on the greenhouse gases carbon dioxide and methane dissolved in a sodium chloride aqueous solution, as a simple model of seawater. A carbon dioxide molecule is also treated as a hydrogen carbonate ion. The structure, coordination number, diffusion coefficient, shear viscosity, specific heat, and thermal conductivity of the solutions have been discussed. The anomalous behaviors of these properties, especially the negative pressure dependence of thermal conductivity, have been observed in the higher-pressure region.

  19. Gases and vacua handbook of vacuum physics

    CERN Document Server

    Beck, A H

    2013-01-01

    Handbook of Vacuum Physics, Volume 1: Gases and Vacua provides information on the many aspects of vacuum technology, from material on the quantum theoretical aspects of the complex semi-conductors used for thermionic and photo-electric emission to data on the performance of commercially available pumps, gauges, and high-vacuum materials. The handbook satisfies the need of workers using vacuum apparatuses or works on the diverse applications of high-vacuum technology in research and industry. The book is a compilation of long articles prepared by experts in vacuum technology. Sufficient theoret

  20. Mean free path in soccer and gases

    Energy Technology Data Exchange (ETDEWEB)

    Luzuriaga, J, E-mail: luzuriag@cab.cnea.gov.a [Centro Atomico Bariloche - CNEA, Instituto Balseiro UNC (8400), Bariloche (Argentina)

    2010-09-15

    The trajectories of the molecules in an ideal gas and of the ball in a soccer game are compared. The great difference between these motions and some similarities are discussed. This example could be suitable for discussing many concepts in kinetic theory in a way that can be pictured by students for getting a more intuitive understanding. It could be suitable for an introductory course in vacuum techniques or undergraduate courses in kinetic theory of gases. Without going into the slightly harder quantitative results, the analysis presented might be used for introducing some ideas of kinetic theory qualitatively to high school students.