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
Ngày tải lên :
07/11/2012, 14:44
... 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...
- 53
- 1K
- 3
Tài liệu ADSORPTION OF ORGANIC COMPOUNDS doc
Ngày tải lên :
14/02/2014, 03:20
... 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...
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- 612
- 0
Tài liệu NOMENCLATURE OF ORGANIC COMPOUNDS docx
Ngày tải lên :
14/02/2014, 08:20
...
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...
- 15
- 605
- 0
DETERMINATION OF ORGANIC COMPOUNDS IN DRINKING WATER BY LIQUID-SOLID EXTRACTION AND CAPILLARY COLUMN GAS CHROMATOGRAPHY/MASS SPECTROMETRY pdf
Ngày tải lên :
22/03/2014, 14:20
... 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...
- 60
- 528
- 0
PREDICTION OF CHEMICAL REACTIVITY PARAMETERS AND PHYSICAL PROPERTIES OF ORGANIC COMPOUNDS FROM MOLECULAR STRUCTURE USING SPARC pptx
Ngày tải lên :
22/03/2014, 14:20
... 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...
- 158
- 631
- 0
Báo cáo khoa học: Reduced FAS transcription in clones of U937 cells that have acquired resistance to Fas-induced apoptosis ppt
Ngày tải lên :
23/03/2014, 06:20
... 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...
- 12
- 411
- 0
heats of hydrogenation experimental and computational hydrogen thermochemistry of organic compounds
Ngày tải lên :
01/04/2014, 10:53
... 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...
- 234
- 278
- 0
Tài liệu Glossary of Volatile Organic Compounds ppt
Ngày tải lên :
14/02/2014, 03:20
... 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...
- 11
- 451
- 0
ANALYSIS OF NAMES OF ORGANIC CHEMICAL COMPOUNDS BY USING PARSER COMBINATORS AND THE GENERATIVE LEXICON THEORY doc
Ngày tải lên :
05/03/2014, 20:20
... 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....
- 23
- 541
- 0
The Carbon and Global Warming Potential Impacts of Organic Farming: Does It Have a Significant Role in an Energy Constrained World? pptx
Ngày tải lên :
08/03/2014, 23:20
... 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...
- 41
- 524
- 1
DETERMINATION OF VOLATILE ORGANIC COMPOUNDS (VOC) IN CONSUMER PRODUCTS AND REACTIVE ORGANIC COMPOUNDS IN AEROSOL COATING PRODUCTS doc
Ngày tải lên :
14/03/2014, 20:20
... 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...
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- 0
Source Identification of Volatile Organic Compounds in Houston, Texas pdf
Ngày tải lên :
22/03/2014, 14:20
... 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...
- 10
- 602
- 0
Chemical evolution of volatile organic compounds in the outflow of the Mexico City Metropolitan area potx
Ngày tải lên :
28/03/2014, 20:20
... 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...
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- 0
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