classes of organic compounds that have unpleasant odors
Metaphor, based on the association of similarity, is one of the two basic types of semantic transference that have been an interest for many linguistic researchers
... role of metaphor in description of emotion in poetic discourse 2 It is clear that between the two there is a highly complex relation of grammatical metaphor because a number of transformations have ... metaphors, which have to do with alternative ways of construing reality, and interpersonal metaphor, which offer alternative possibilities of expressing modal meanings (metaphors of modality), ... of units at the next rank below, and so on, until we arrive at the units of the lowest rank, which have no internal constituent structure. Rank is thus a theory of the global distribution of...
Ngày tải lên: 07/11/2012, 14:44
Tài liệu ADSORPTION OF ORGANIC COMPOUNDS doc
... intensity and frequency of appearance of taste and odor compounds, the presence of organics that compete for adsorption sites,and the concentration of these compounds that is acceptable in the ... (DCP) was introduced to the influent of a column ADSORPTION OF ORGANIC COMPOUNDS 13.7 FIGURE 13.4 Nonlinear isotherm for a het- erogeneous mixture of organic compounds. (Source: Randtke and Snoeyink, ... characteristics that affect isotherms include surface area, pore size distribution, and surface chem- q max bC e ᎏ 1 + bC e 1 ᎏ n ADSORPTION OF ORGANIC COMPOUNDS 13.3 CHAPTER 13 ADSORPTION OF ORGANIC COMPOUNDS Vernon...
Ngày tải lên: 14/02/2014, 03:20
Tài liệu NOMENCLATURE OF ORGANIC COMPOUNDS docx
... A carbon atom on the end of a chain that is double bonded to another carbon atom be bonded to two hydrogen atoms. A carbon atom in the middle of a chain of that is double bonded to another ... acetamide) A summary of the functional group compounds, their structures and names is listed in tables on the next two pages. 1 NOMENCLATURE OF ORGANIC COMPOUNDS ©2010, 2003, 1980, ... rights reserved. Organic chemistry is the chemistry of carbon compounds. Carbon has the ability to bond with itself to form long chains and, as a result, millions of compounds from simple...
Ngày tải lên: 14/02/2014, 08:20
DETERMINATION OF ORGANIC COMPOUNDS IN DRINKING WATER BY LIQUID-SOLID EXTRACTION AND CAPILLARY COLUMN GAS CHROMATOGRAPHY/MASS SPECTROMETRY pdf
... degrees of freedom n = number of replicates S = standard deviation of replicate analyses 13.2 Problem Compounds RF (A x ) (Q is ) (A is ) (Q x ) 525.2-20 identifications. If fewer than 99% of the compounds ... abundance of the quantitation ion of the analyte x A = integrated abundance of the quantitation ion internal is standard Q = quantity of analyte injected in ng or concentration units x Q = quantity of ... use of very small volumes of organic solvent and very small quantities of pure analytes, thereby eliminating the potential hazards to both the analyst and the environment involved with the use of...
Ngày tải lên: 22/03/2014, 14:20
PREDICTION OF CHEMICAL REACTIVITY PARAMETERS AND PHYSICAL PROPERTIES OF ORGANIC COMPOUNDS FROM MOLECULAR STRUCTURE USING SPARC pptx
... expert chemist would do. Physical organic chemists have established the types of structural groups or atomic arrays that impact certain types of reactivity and have described, in “mechanistic” ... March 2003 PREDICTION OF CHEMICAL REACTIVITY PARAMETERS AND PHYSICAL PROPERTIES OF ORGANIC COMPOUNDS FROM MOLECULAR STRUCTURE USING SPARC By S.H. Hilal and S.W. Karickhoff Ecosystems Research ... all the organic molecules reported in the IUPAC series were included. The only compounds that were removed for this test were those that: 1. Form covalent hydrates. These include many of the...
Ngày tải lên: 22/03/2014, 14:20
Báo cáo khoa học: Reduced FAS transcription in clones of U937 cells that have acquired resistance to Fas-induced apoptosis ppt
... cell surface receptor that is important for the mediation of cell death, and is one of eight different death receptors that have been char- acterized to date [1]. The role of the Fas ligand (FasL) and ... addition, methylation-specific PCR of a CpG region in the first intron of FAS revealed no methylations in any of the clones (Fig. 5C). Methylation-specific PCR of suppres- sor of cytokine signalling 1 (SOCS-1) ... the function of cytotoxic T lymphocytes and in the control of immune cell homeostasis [2,3]. Oligomerization of Fas via binding of its cognate ligand (FasL) induces a signalling cascade that culminates...
Ngày tải lên: 23/03/2014, 06:20
descriptions of selected accidents that have occurred at nuclear reactor potx
Ngày tải lên: 31/03/2014, 14:20
heats of hydrogenation experimental and computational hydrogen thermochemistry of organic compounds
... experimental heats of hydrogenation have had an importance far out of proportion to the small number of research groups engaged in their measurement. Much of our quantitative understanding of such concepts ... grand mean of two experimental sets of results consisting of 9 pairs of hydrogenations (sample and standard), 18 hydrogenations in all. The uncertainties are the arithmetic mean of twice the ... grand mean of two experimental sets of results consisting of 9 pairs of hydrogenations (sample and standard), 18 hydrogenations in all. The uncertainties are the arithmetic mean of twice the...
Ngày tải lên: 01/04/2014, 10:53
Estimation of emissions of nonmethane organic compounds from a closed landfill site using a landfill gas emission model
Ngày tải lên: 05/09/2013, 16:11
Tài liệu Glossary of Volatile Organic Compounds ppt
... water that contains it or from eating certain foods, such as meat, chicken, eggs, or fish, that contain it. Health effects There is no evidence that moderate use of common household products that ... Two natural sources of benzene are volcanoes and forest fires. Benzene is a natural part of crude oil, gasoline, and cigarette smoke. Benzene is one of the major components of JP-8 fuel. Industry ... in the mid-1960s. Route of exposure Levels of carbon tetrachloride are found in air, water, and soil because of past and present releases. Most carbon tetrachloride that escapes to the environment...
Ngày tải lên: 14/02/2014, 03:20
ANALYSIS OF NAMES OF ORGANIC CHEMICAL COMPOUNDS BY USING PARSER COMBINATORS AND THE GENERATIVE LEXICON THEORY doc
... chemistry that studies the carbon based chemical compounds. Carbon (C) is the main element that appears in the formation of organic compounds. The atoms that most frequently appear in these compounds, ... Upper Bound of a subset X of S if a is an upper bound of X and, for all upper bounds a' of X, we have a ≤ a'. 2.6. Xymtec Xymtec is a demarcation package that combines files of style ... presented here is a very useful automatic Organic Chemistry instructor specialized in the analysis of names of organic chemical compounds and in the generation of their chemical structure pictures....
Ngày tải lên: 05/03/2014, 20:20
The Carbon and Global Warming Potential Impacts of Organic Farming: Does It Have a Significant Role in an Energy Constrained World? pptx
... and organic wheat production and delivery in the US. The GWP of a 1 kg loaf of organic wheat bread was found to be about 30 g CO 2 e less than that for a conventional loaf. However, when the organic ... study of 15 organic dairy farms in Ontario found that farm nutrient (NPK) loading (imports-exports) and risk of off-farm losses to air and water are greatly reduced under commercial organic ... higher levels of soil organic matter on organic farms, but also reported on numerous studies that did not find convincing evidence of differences, largely they believe because of methodological...
Ngày tải lên: 08/03/2014, 23:20
DETERMINATION OF VOLATILE ORGANIC COMPOUNDS (VOC) IN CONSUMER PRODUCTS AND REACTIVE ORGANIC COMPOUNDS IN AEROSOL COATING PRODUCTS doc
... fraction of non-exempted volatile organic compounds in the non-propellant portion. n = number of non-exempted volatile organic compounds in the non-propellant portion. WL = weight (gm) of the ... fraction of water in the non-propellant portion. EL = weight fraction of exempt compounds in the non-propellant portion. WP = weight (gm) of propellant. EP = weight (gm) of exempt compounds ... in a product and the presence of any compounds prohibited by ARB regulations (“prohibited compounds ). Components of the product that do not meet the definition of a VOC or are exempted by ARB...
Ngày tải lên: 14/03/2014, 20:20
Source Identification of Volatile Organic Compounds in Houston, Texas pdf
... the Houston area. Introduction Volatile organic compounds (VOC) are organic chemicals that easily vaporize at room temperature. Many VOCs have been found to have adverse effects on air quality and ... evaporations of some VOCs. The influence of temperature on pollutants is more complex than that of wind speed because increasing tem- perature will not only speed up the vaporization of VOCs but also ... The principle of the PTR-MS is the reaction of organic species in ambient air with H 3 O + ions, generated from thehollow cathode discharge of watervapor, to produce the protonated organic species...
Ngày tải lên: 22/03/2014, 14:20
Chemical evolution of volatile organic compounds in the outflow of the Mexico City Metropolitan area potx
... E. C. Apel et al.: Chemical evolution of volatile organic compounds Fig. 14. Results of a MM model run to test of the sensitivity of the model to specific compounds. The model was initialized with T0 ... on the characterization of volatile organic compounds (VOCs) in the MCMA, both on the ground and aloft and on the emission, transport, and transformation of VOCs downwind of the metropolitan area. Measurable ... the distributions of VOC chemical classes. A box model with Published by Copernicus Publications on behalf of the European Geosciences Union. 2354 E. C. Apel et al.: Chemical evolution of volatile organic compounds detailed...
Ngày tải lên: 28/03/2014, 20:20
