synthesis of superheavy elements
Tài liệu LUBRICATION OF MACHINE ELEMENTS P1 pdf
Ngày tải lên :
27/01/2014, 16:20
... diameter
of
contact ellipse along
x
axis,
m
D
y
diameter
of
contact ellipse along
y
axis,
m
d
diameter
of
rolling element
or
diameter
of
journal,
m
d
a
overall diameter
of
ball ... bore diameter
of
ball bearing,
m
d
c
diameter
of
capillary tube,
m
df
inner-race diameter
of
ball bearing,
m
d
0
outer-race diameter
of
ball bearing,
m
d
0
diameter
of
orifice,
... middle
of
this century
two
distinct regimes
of
lubrication were generally recognized.
The first
of
these
was
hydrodynamic lubrication.
The
development
of the
understanding
of
this...
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Tài liệu LUBRICATION OF MACHINE ELEMENTS P2 pptx
Ngày tải lên :
27/01/2014, 16:20
... minimum value
of
H
f
occurs
at a
ratio
of
recess
radius
to
bearing
radius
R
0
IR
of
0.53.
All
bearing-pad configurations exhibit minimum values
of
H
f
when their ratios
of
recess ... establishing
the
definition
of
c
b
.
The
preload factor
m
p
is
given
by
c
-
c
b
m
=
p
c
A
preload
factor
of
zero corresponds
to
having
all of the pad
centers
of
curvature coinciding
... the
center
of the
bearing;
a
preload
factor
of 1.0
corresponds
to
having
all of the
pads touching
the
shaft.
Figures
2l.l6b
and
21.16c
illustrate these extreme situations. Values
of...
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Tài liệu LUBRICATION OF MACHINE ELEMENTS P3 pptx
Ngày tải lên :
27/01/2014, 16:20
... (^)''
8
where
d =
diameter
of
rolling element,
m
/
=
number
of
rows
of
rolling elements
n =
number
of
rolling elements
per row
(3
=
contact angle
f
c
=
coefficient
dependent
... a
range
of
nearly
two
orders
of
magnitude,
and the
dimensionless
load parameter
W
over
a
range
of one
order
of
magnitude. Situations equivalent
to
using materials
of
bronze, ... map
of
the
lubrication regimes
in the
form
of
dimensionless minimum-film-thickness parameter contours.
Some
of
these maps
are
shown
in
Figs.
21.72-21.74
on a
log-log grid
of the
...
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Tài liệu Management Information Systems A Synthesis of Transit Practice ppt
Ngày tải lên :
18/02/2014, 11:20
... effectively because a growing
number of managers are computer literate and understand many of
the basic hardware/software requirements of smaller agencies. More
often this approach is unsuccessful ... their
questionnaries. A profile of these two systems may provide insight
into the state of the practice of representative transit agencies. The
questionnaries are included in this synthesis as Appendixes ... contains the
definitions of the business entities, and an English description of the
relationships between them, cardinality of the relationships and
identification of the unique identifiers.
geographical...
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Tài liệu Báo cáo khoa học: Physico-chemical characterization and synthesis of neuronally active a-conotoxins docx
Ngày tải lên :
19/02/2014, 12:20
... the
mechanisms of incorporation of PTMs in the biosynthesis
of conopeptides. Appropriate methods of analysis need
to be addressed to ensure recognition of these PTMs,
if present, in the course of characterization ... the
structure of the naturally occurring peptide. However, the
limitation of scarcity of most conopeptides usually precludes
this. The possibility of activity of non-native disulfide-
bonded isomers of a-conotoxins ... identification of the PTM is usually
confirmed by synthesis of the modified a-conotoxin and
comparison with the natural peptide.
Identification of the nature of the C-terminus. The
identification of C-terminal...
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Tài liệu Báo cáo khoa học: "Japanese Dependency Parsing Using Co-occurrence Information and a Combination of Case Elements" pdf
Ngày tải lên :
20/02/2014, 12:20
... explanation
of the dependency structure T:
m(T ) : the number of verbs in T
v
i
(T ) : the i-th verb in T
c
i
(T ) : the number of case elements that mod-
ify the i-th verb in T
es
i
(T ) : the set of ... of case elements that modify the
i-th verb in T
rs
i
(T ) : the set of particles in the set of case el-
ements that modify the i-th verb in T
ns
i
(T ) : the set of nouns in the set of case ele-
ments ... accuracy of model (d) is comparable
to that of our model, we can conclude that the con-
sideration of the syntactic property of a verb does
not necessarily improve dependency analysis.
The accuracy of...
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Tài liệu Báo cáo Y học: The glucose-specific carrier of the Escherichia coli phosphotransferase system Synthesis of selective inhibitors and inactivation studies pptx
Ngày tải lên :
21/02/2014, 01:21
... for the preparation of C-6 aldehyde
derivatives of Glc [15]. The key step is the use of Collins
reagent for the selective oxidation of the primary trimethyl-
silyl ether of the fully silylated ... con-
sumption of NADH in the presence of
L
-lactate dehydro-
genase, but also formation of NADPH in the presence of
Glc6P dehydrogenase. This background activity must
therefore be due to phosphorylation of ... 0.13 g of 14 [37]. The
epoxide 14 (50 mg, 0.1 mmol) was debenzylated in 30 min
by following the same method as for 1d.23mgofa1:1
diastereomeric mixture of 3a was obtained.
Preparation of chloroacetyl...
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Tài liệu Báo cáo Y học: Dinucleoside polyphosphates stimulate the primer independent synthesis of poly(A) catalyzed by yeast poly(A) polymerase ppt
Ngày tải lên :
21/02/2014, 01:21
... doi:10.1046/j.1432-1033.2002.03253.x
Relative activity of Gp
n
Gs as effectors of the synthesis
of poly(A)
Based on the above results, the effect of several diguanosine
polyphosphates on the synthesis of poly(A) was comparat-
ively ... independent synthesis of poly(A)
In order to understand why dinucleoside polyphosphates
activated the primer independent synthesis of poly(A), the
effect of 0.01 m
M
Gp
4
GorAp
4
A on the synthesis of
poly(A) ... presence of 0.02 m
M
[a-
32
P]ATP. While confirming the adenylylation of these
compounds and the absence of synthesis of poly(A) by the
E.colipoly(A) polymerase, we did not observed adenyly-
lation of...
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Báo cáo khoa học: Heterologous synthesis of cytochrome c¢ by Escherichia coli is not dependent on the System I cytochrome c biogenesis machinery ppt
Ngày tải lên :
06/03/2014, 00:20
... the
latter.
Heterologous synthesis of PHCP by E. coli
The E. coli System I cytochrome c biogenesis machin-
ery, consisting of the Dsb and Ccm proteins, is respon-
sible for the synthesis of class I cytochromes ... and
propagation of all plasmids. The E. coli RI89, RI242 and
JCB387 strains were examined with regard to the synthesis
of exogenous PHCP and PH c
552
proteins. The RI89 strain
is a parental strain of RI242, ... plasmid. In addition, the
effects of Dsb proteins on cytochrome c synthesis
have not been examined to date.
In this study, we examined the heterologous synthesis
of cytochrome c proteins by E....
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Environmental Goods and Services A Synthesis of Country Studies pot
Ngày tải lên :
07/03/2014, 08:20
...
Services. In Nicaragua, the Ministry of Environment and Natural Resources (MARENA) has an Office of
Environmental Services that is in charge of identifying the benefits of trade in environmental goods ... in all of the studies is that information and data about the EG&S market are hard to
come by. For most authors, the lack of appropriate statistics makes the assessment of the size of domestic ... or no examples are given.
Imports of EG&S
Many of the studies include figures for imports of EG&S. Interestingly, EG&S imports account for 5-
10% of total imports in each country,...
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Báo cáo khoa học: Mycobacterium tuberculosis possesses a functional enzyme for the synthesis of vitamin C, L-gulono-1,4-lactone dehydrogenase doc
Ngày tải lên :
07/03/2014, 12:20
... characterization of l-gulonolactone oxidase from
chicken kidney microsomes. Biochemistry 21, 5076–
5082.
14 Loewus FA (1999) Biosynthesis and metabolism of
ascorbic acid in plants and of analogs of ascorbic ... the synthesis of vitamin C,
L-gulono-1,4-lactone dehydrogenase
Beata A. Wolucka
1
and David Communi
2
1 Laboratory of Mycobacterial Biochemistry, Pasteur Institute of Brussels, Institute of Public ... distinct member
of the family of l-gulono-1,4-lactone dehydrogenase ⁄
oxidases that have been characterized up to now, and
the first example of a specific, vitamin C biosynthetic
enzyme of bacterial...
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Báo cáo khoa học: Reconstruction ofde novopathway for synthesis of UDP-glucuronic acid and UDP-xylose from intrinsic UDP-glucose inSaccharomyces cerevisiae pptx
Ngày tải lên :
07/03/2014, 12:20
... biosynthesis
of glycosaminoglycan in mammals and of cell wall polysaccharides in
plants. Given the importance of these glycans to some organisms, the
development of a system for production of ... Jigami Synthesis of UDP-glucuronic acid and UDP-xylose
FEBS Journal 273 (2006) 2645–2657 ª 2006 The Authors Journal compilation ª 2006 FEBS 2653
Reconstruction of de novo pathway for synthesis of
UDP-glucuronic ... efficient production of UDP-GlcA and
UDP-Xyl via conversion of a large precursor pool of
UDP-Glc into the derivative molecules. Here, we
report the generation of yeast strains capable of produ-
cing...
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Báo cáo khóa học: A single mutation that causes phosphatidylglycerol deficiency impairs synthesis of photosystem II cores in Chlamydomonas reinhardtii pdf
Ngày tải lên :
07/03/2014, 15:20
... epistasy
of synthesis (CES) process [1], D1 and apoCP47 display
concerted rates of synthesis. In the absence of D1, the rate of
synthesis of apoCP47 is strongly reduced, while the rates of
synthesis of ... in
mf1
and
mf2
is due to a
decreased synthesis of two PSII core subunits
The strongly reduced accumulation of PSII could result
from a defect in the synthesis of any of the major PSII core
subunits ... attributed to a higher susceptibility of the
cores to proteolytic degradation or to their lower rate of
synthesis. When we studied the rates of synthesis of the
individual PSII subunits by 5 min...
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Báo cáo khoa học: "Analysis and Synthesis of the Distribution of Consonants over Languages: A Complex Network Approach" pptx
Ngày tải lên :
08/03/2014, 02:21
... extra-
ordinarily diverse range of phenomena including
the frequency of the use of words in human lan-
guage (Zipf, 1949), the number of papers scien-
tists write (Lotka, 1926), the number of hits on
web pages ... of Figure 3(b) comprises of the rest
of the consonants. The point marked as x in both
the figures indicates the breakpoint. Each of the
regime in both Figure 3(a) and (b) exhibit a power
law of ... the y-axis denotes the number of nodes
having a given degree expressed as a fraction of
the total number of nodes in V
L
.
It is evident from Figure 2 that the number of
consonants appearing in...
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