báo cáo khoa học: "Blue shift of CdSe/ZnS nanocrystal-labels upon DNA-hybridization" ppt
báo cáo khoa học: "Blue shift of CdSe/ZnS nanocrystal-labels upon DNA-hybridization" ppt
... [16].
BioMed Central
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Journal of Nanobiotechnology
Open Access
Research
Blue shift of CdSe/ZnS nanocrystal-labels upon DNA-hybridization
Jürgen ... surface of the particles
was exchanged with mercaptopropionic acid (MPA). 10
ml (0.1 molar) of a solution of MPA in dimethylforma-
mide (DMF) were added to solid QDs, precipita...
Tài liệu Báo cáo khoa học: Survival mechanisms of pathogenic Mycobacterium tuberculosis H37Rv ppt
... of ingested
pathogen
Release of digested
material by exocytosis
Fig. 1. Detailed structure of a macrophage
showing a typical process of phagocytosis.
Phagosome
Lysosome
Inhibition of fusion of ... pro-
teins of mycobacteria have a profound influence on its
pathogenicity. It was found that the disruption of an
erp gene of M. tuberculosis encoding a secretory pro-
tein effects...
Báo cáo khoa học: The binding of IMP to Ribonuclease A pptx
... the
free enzyme. With the exception of a shift of the side
chain of Gln69 (constituent of the B
2
subsite) and a
movement by 3.0 A
˚
of the Arg85 (the sole compo-
nent of the P
-1
subsite [12]) side ... similar man-
ner to AMP would place the carbonyl O6 of IMP 3.1–
3.5 A
˚
away from Od1 of Asn67, Oe1 of Gln69, and
Od1 of Asn71 in the B
2
. At the pH of the crystalli...
Báo cáo khoa học: "Intelligent Selection of Language Model Training Data" ppt
... per-
plexity of 124, obtained with a model built from
36% of the Gigaword corpus. Klakow’s method
is even more effective, with an optimum perplex-
ity of 111, obtained with a model built from 21%
of the ... language
model trained on I, of a text segment s drawn from
N. Let H
N
(s) be the per-word cross-entropy of s
according to a language model trained on a ran-
dom sample of N....
Báo cáo khoa học: "A Corpus of Scope-disambiguated English Text" ppt
... sourcing. The number of scopal terms per
sentence is 3.9, out of which 95% are NPs and the
rest are scopal operators. Table (1) shows the per-
centage of different types of NP in the corpus. ... similarity
of two DAGs corresponding to two different scop-
ings of a single sentence, we borrow the notion of
transitive closure from graph theory. The transitive
closure (TC) of...
Báo cáo khoa học: Solution structure of human proinsulin C-peptide ppt
... ps
at an initial temperature of 3000 K. The system was then
slowly cooled to a temperature of 0 K in 25 K steps over a
period of 5 ps. At 0 K, a final stage of 150 steps of Powell
minimization was ... Ramachan-
dran plot of the experimental structures. The unambig-
uous absence of an NOE between the H
a
proton of
Asp4 and the H
N
proton of Val7 (expected always to
exist in a...
Báo cáo khoa học: " A Type of Program for Mechanical Translation" ppt
... this particular part of the program.
Secondly, the method of effecting change of
word order appears to be applicable only to
subsections of languages where permutation of
target language ... of the
space available by means of stem-ending split-
ting. Apart from these faults, there were two
inherent drawbacks of the above type of program.
The use of separate condi...
Báo cáo khoa học: "Semantic Representation of Negation Using Focus Detection" pptx
... USA.
Laurence R. Horn. 1989. A Natural History of Negation.
University Of Chicago Press.
Rodney D. Huddleston and Geoffrey K. Pullum. 2002.
The Cambridge Grammar of the English Language.
Cambridge University ... se-
quence of words (POS tags) from the beginning of
the VP until the main verb. Features (15–16) check
for POS tags as the presence of certain tags usually
signal that th...
Báo cáo khoa học: "Bootstrapped Training of Event Extraction Classifiers" ppt
... variety of techniques have been explored
for weakly supervised training of event extrac-
tion systems, primarily in the realm of pattern or
rule-based approaches (e.g., (Riloff, 1996; Riloff
and ... effect of the coreference prop-
agation step described in Section 4.1.3 as part of
training data creation. Without this step, the per-
formance of the bootstrapped system yields an F
s...
Báo cáo khoa học:Spectrophotometric Determination of Allopurinol in Tablet Formulation ppt
... Ionization of catechol in the presence of allopurinol and (b) blue color
complex formation.
3. RESULTS AND DISCUSSION
3.1 Optimization of Experimental Conditions
3.1.1 Effect of the order of ...
III C+A+F 0.750
Journal of Physical Science, Vol. 19(2), 23–30, 2008 27
3.1.2 Effect of the amount of Fe(II) and catechol
In order to select the best volume of Fe...