Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học 'Respiratory Research cung cấp cho các bạn kiến thức về ngành y đề tài: Cell cycle G2/M arrest through an S phase-dependent mechanism by HIV-1 viral protein R...
We would like to draw attention to Hidden Markov Tree Models (HMTM), which are to our knowledge still unexploited in the ﬁeld of Computational Linguistics, in spite of highly successful Hidden Markov (Chain) Models. In dependency trees, the independence assumptions made by HMTM correspond to the intuition of linguistic dependency. Therefore we suggest to use HMTM and tree-modiﬁed Viterbi algorithm for tasks interpretable as labeling nodes of dependency trees.
This paper proposes a dependency parsing method that uses bilingual constraints to improve the accuracy of parsing bilingual texts (bitexts). In our method, a targetside tree fragment that corresponds to a source-side tree fragment is identiﬁed via word alignment and mapping rules that are automatically learned. Then it is veriﬁed by checking the subtree list that is collected from large scale automatically parsed data on the target side.
Dependency structures do not have the information of phrase categories in phrase structure grammar. Thus, dependency parsing relies heavily on the lexical information of words. This paper discusses our investigation into the effectiveness of lexicalization in dependency parsing. Speciﬁcally, by restricting the degree of lexicalization in the training phase of a parser, we examine the change in the accuracy of dependency relations. Experimental results indicate that minimal or low lexicalization is sufﬁcient for parsing accuracy. ...
The quality of phased array and synthetic aperture ultrasonic images is limited by several factors determined by the sound propagation physics and diffraction laws. Image quality is mainly determined by: Resolution, which depends on signal bandwidth (in the axial direction) and on the aperture extent (in the lateral direction); Dynamic range, which is bounded by the ratio of the main to the sidelobes level and is related to the smallest features detection capability.
Choice of Stationary Phase
Ideally for a reversed-phase separations, the retention factors (k) for all com-
ponents in a sample should lie between 1 and 10 to achieve separation in a
reasonable time. For a given stationary phase the k of a particular component
can be controlled by changing the solvent composition of the mobile phase.
However, the impact of eluent composition will depend on the type of sta-
tionary phase and the nature of the components in the mixture.
Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Arice calcium-dependent protein kinase is expressed in cortical root cells during the presymbiotic phase of the arbuscular mycorrhizal symbiosis
The sub-series Ternary Alloy Systems of the Landolt-Börnstein New Series provides reliable and
comprehensive descriptions of the materials constitution, based on critical intellectual evaluations of all
data available at the time and it critically weights the different findings, also with respect to their
compatibility with today’s edge binary phase diagrams. Selected are ternary systems of importance to
alloy development and systems which gained in the recent years otherwise scientific interest.
This is the third volume in the series “Tutorial in Mathematical Biosciences”.
These lectures are based on material which was presented in tutorials or developed
by visitors and postdoctoral fellows of the Mathematical Biosciences
Institute (MBI), at The Ohio State University. The aim of this series is to introduce
graduate students and researchers with just a little background in either
mathematics or biology to mathematical modeling of biological processes.
The first volume was devoted to mathematical neuroscience, which was the
focus of the MBI program in 2002–2003.
The cell cycle-dependent element (CDE) and the cell cycle genes homology
region (CHR) control the transcription of genes with maximum expression
phase and in mitosis. Promoters of these genes are repressed by pro-teins binding to CDE⁄CHR elements in G0 and G1 phases. Relief from
repression begins in S phase and continues into G2
phase and mitosis.
Another aspect to take into account in assigning priority is the geographical extent of the
impact, i.e. whether a particular problem, for example caused by a discharge of
wastewater, has only a local impact in an area of a few hundred meters along the river
or whether there is an impact in the entire river system downstream of the discharge.
The likely answer depends, for example, on the size of the discharge and the retention
time in the receiving water bodies, the degradability of the pollutant, and the occurrence
of sensitive species in the receiving water body. In addition, the...
Substitution oftrans-proline at three positions in ubiquitin
(residues 19, 37 and 38) produces significant context-dependent effects on protein stability (both stabilizing
and destabilizing) that reflect changes to a combination
of parameters including backbone flexibility, hydrophobic
interactions, solvent accessibility to polar groups and
intrinsic backbone conformational preferences. Kinetic
analysis of thewild-type yeast protein reveals a predominant
fast-folding phase which conforms to an apparent two-state folding model. ...
Information disposition and sanitization decisions occur throughout the system life cycle.
Critical factors affecting information disposition and media sanitization are decided at the start
of a system’s development. The initial system requirements should include hardware and
software specifications as well as interconnections and data flow documents that will assist the
system owner in identifying the types of media used in the system.
Mammalian G1 phase progression is regulated by G1 cyclin and cyclin-dependent kinases (cdks). Cdk4 or cdk6 is associated with D-type cyclins while cdk2 binds to cyclin E or cyclin A to become an independent and essential kinase [1,2]. Cdk3 is another putative G1 cdk, whose cyclin partners have not been identiﬁed . In vitro, cdk3 is an active kinase in association with either cyclin E or cyclin A [4,5].
With the development of the technology and the way in which human labour is getting minimized and the comforts increasing tremendously the use of electrical energy is ever increasing.... The AC voltages generated may be single phase or 3-phase depending on the power supplied. For low power applications single phase generators are preferable. The basic principles involved in the production of emf and the constructional details of the generators are discussed below.
Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học 'Respiratory Research cung cấp cho các bạn kiến thức về ngành y đề tài:"The mode of lymphoblastoid cell death in response to gas phase cigarette smoke is dose-dependent...
The type of deposit account to open depends on how you plan to
use the account. If you will need to gain access to your money on
a frequent basis, use a chequing or savings account. If you do not
need to use your money for a longer period, a time deposit
account may be best for you.
Interest rates will vary depending on the type of deposit account
opened by a consumer. This is because each type of account will
have its own terms and conditions. Generally, the longer you can
guarantee your funds are deposited in the bank’s account, the
higher the interest...
Using co-immunoprecipitation combined with MS analysis, we identified
the a¢ subunit of casein kinase 2 (CK2) as an interaction partner of the
atypical Rio1 protein kinase in yeast. Co-purification of Rio1p with CK2
from Dcka1 or Dcka2 mutant extracts shows that Rio1p preferentially
interacts with Cka2p in vitro.
-dependent (R)-2-hydroxyglutarate dehydrogenase (HGDH) cata-lyses the reduction of 2-oxoglutarate to (R)-2-hydroxyglutarate and belongs
to the D-2-hydroxyacid NAD
-dependent dehydrogenase (D-2-hydroxyacid
dehydrogenase) protein family. Its crystal structure was determined by
phase combination to 1.98 A˚
resolution. Structure–function relationships
obtained by the comparison of HGDH with other members of theD-2-hydroxyacid dehydrogenase family give a chemically satisfying view of the
substrate stereoselectivity and catalytic requirements for the hydride trans-fer reaction.