56,863 research outputs found
Abnormal prothrombin (DES-y-Carboxy Prothrombin) in hepatocellular carcinoma
Des-γ-carboxy prothrombin (DCP), a protein induced by vitamin K absence or antagonist-II (PIVKA-II) was measured by an enzyme immunoassay (E-1023) using anti-DCP monoclonal antibody in 92 patients with various hepatobiliary diseases. Thirty-six of the 38 patients (94.7%) with hepatocellular carcinoma (HCC) had abnormal DCP levels greater than 0.1 arbitrary unit (AU)/ml, but only 18 of the 35 patients (51.4%) had AFP greater than 100 ng/ml (suspicious levels for HCC). There was no correlation between plasma or serum DCP and serum alpha-fetoprotein (AFP) levels. Serum alpha fetoprotein was elevated (above 20 ng/ml) in 23 of the 35 patients (65.7%), and DCP was elevated in all of the remaining 12 patients with normal AFP. DCP levels returned to normal levels following curative hepatic resection or orthotopic liver transplantation for HCC. DCP is a useful tumor marker in the diagnosis and postoperative monitoring of patients with HCC
Domination Cover Pebbling: Structural Results
This paper continues the results of "Domination Cover Pebbling: Graph
Families." An almost sharp bound for the domination cover pebbling (DCP) number
for graphs G with specified diameter has been computed. For graphs of diameter
two, a bound for the ratio between the cover pebbling number of G and the DCP
number of G has been computed. A variant of domination cover pebbling, called
subversion DCP is introducted, and preliminary results are discussed.Comment: 15 page
The Determination of Dendrite Coherency Point Characteristics Using Three New Methods for Aluminum Alloys
The aim of this work is to give an overview of existing methods and to introduce three new methods for the determination of the Dendrite Coherency Point (DCP) for AlSi10Mg alloys, as well as to compare the acquired values of DCP based on a thermal analysis and on the analysis of cooling curves working with only one thermocouple. Additionally, the impact of alloying and contaminant elements on the DCP will be also studied. The first two proposed methods employ the higher order derivatives of the cooling curves. The DCP was determined as the crossing point of the second and third derivative curves plotted versus time (method 1) or that of the temperature (method 2) with the zero line just after the maximum liquidus temperature. The third proposed method is based on the determination of the crossing point of the third solid fraction derivative curve with the zero line, corresponding to a minimum of the second derivative. A Taguchi design for the experiments was developed to study the DCP values in the AlSi10Mg alloy. The DCP temperature values of the test alloys were compared with the DCP temperatures predicted by the previous methods and the influence of the major and minor alloying elements and contaminants over the DCP. The new processes obtained a correlation factor r2 from 0.954 and 0.979 and a standard deviation from 1.84 to 2.6 °C. The obtained correlation values are higher or similar than those obtained using previous methods with an easier way to define the DCP, allowing for a better automation of the accuracy of DCP determination. The use of derivative curves plotted versus temperature employed in the last two proposed methods, where the test samples did not have an influence over the registration curves, is proposed to have a better accuracy than those of the previously described methods.This work has been partially funded by the Basque Government through the ETORGAI
programme ZE-2016/00018 and from the European Union’s Seventh Programme for research, technological
development and demonstration under grant agreement No. 296024
Double coset problem for parabolic subgroups of braid groups
We provide the first solution to the double coset problem (DCP) for a large
class of natural subgroups of braid groups, namely for all parabolic subgroups
which have a connected associated Coxeter graph. Update: We succeeded to solve
the DCP for all parabolic subgroups of braid groups.Comment: 8 pages. Update remark adde
Extension of the B3LYP - Dispersion-Correcting Potential Approach to the Accurate Treatment of both Inter- and Intramolecular Interactions
We recently showed that dispersion-correcting potentials (DCPs),
atom-centered Gaussian-type functions developed for use with B3LYP (J. Phys.
Chem. Lett. 2012, 3, 1738-1744) greatly improved the ability of the underlying
functional to predict non-covalent interactions. However, the application of
B3LYP-DCP for the {\beta}-scission of the cumyloxyl radical led a calculated
barrier height that was over-estimated by ca. 8 kcal/mol. We show in the
present work that the source of this error arises from the previously developed
carbon atom DCPs, which erroneously alters the electron density in the C-C
covalent-bonding region. In this work, we present a new C-DCP with a form that
was expected to influence the electron density farther from the nucleus. Tests
of the new C-DCP, with previously published H-, N- and O-DCPs, with
B3LYP-DCP/6-31+G(2d,2p) on the S66, S22B, HSG-A, and HC12 databases of
non-covalently interacting dimers showed that it is one of the most accurate
methods available for treating intermolecular interactions, giving mean
absolute errors (MAEs) of 0.19, 0.27, 0.16, and 0.18 kcal/mol, respectively.
Additional testing on the S12L database of complexation systems gave an MAE of
2.6 kcal/mol, showing that the B3LYP-DCP/6-31+G(2d,2p) approach is one of the
best-performing and feasible methods for treating large systems dominated by
non-covalent interactions. Finally, we showed that C-C making/breaking
chemistry is well-predicted using the newly developed DCPs. In addition to
predicting a barrier height for the {\beta}-scission of the cumyloxyl radical
that is within 1.7 kcal/mol of the high-level value, application of
B3LYP-DCP/6-31+G(2d,2p) to 10 databases that include reaction barrier heights
and energies, isomerization energies and relative conformation energies gives
performance that is amongst the best of all available dispersion-corrected
density-functional theory approaches
Long term measurement network for FIFE
The objectives were: to obtain selected instruments which were not standard equipment on the Portable Automated Mesometeorological (PAM) and Data Control Platform (DCP) stations; to assist in incorporation of these instruments onto the PAM and DCP stations; to help provide routine maintenance of the instruments; to conduct periodic instrument calibrations; and to repair or replace malfunctioning instruments when possible. All of the objectives were or will be met soon. All instruments and the necessary instrument stands were purchased or made and were available for inclusion on the PAM and DCP stations before the beginning of the IFC-1. Due to problems beyond control, the DCP stations experienced considerable difficulty in becoming operational. To fill some of the gaps caused by the DCP problems, Campbell CR21-X data loggers were installed and the data collected on cassette tapes. Periodic checks of all instruments were made, to maintain data quality, to make necessary adjustments in certain instruments, to replace malfunctioning instruments, and to provide instrument calibration. All instruments will be calibrated before the beginning of the 1988 growing season as soon as the weather permits access to all stations and provides conditions that are not too harsh to work in for extended periods of time
Mining Frequent Neighborhood Patterns in Large Labeled Graphs
Over the years, frequent subgraphs have been an important sort of targeted
patterns in the pattern mining literatures, where most works deal with
databases holding a number of graph transactions, e.g., chemical structures of
compounds. These methods rely heavily on the downward-closure property (DCP) of
the support measure to ensure an efficient pruning of the candidate patterns.
When switching to the emerging scenario of single-graph databases such as
Google Knowledge Graph and Facebook social graph, the traditional support
measure turns out to be trivial (either 0 or 1). However, to the best of our
knowledge, all attempts to redefine a single-graph support resulted in measures
that either lose DCP, or are no longer semantically intuitive.
This paper targets mining patterns in the single-graph setting. We resolve
the "DCP-intuitiveness" dilemma by shifting the mining target from frequent
subgraphs to frequent neighborhoods. A neighborhood is a specific topological
pattern where a vertex is embedded, and the pattern is frequent if it is shared
by a large portion (above a given threshold) of vertices. We show that the new
patterns not only maintain DCP, but also have equally significant semantics as
subgraph patterns. Experiments on real-life datasets display the feasibility of
our algorithms on relatively large graphs, as well as the capability of mining
interesting knowledge that is not discovered in prior works.Comment: 9 page
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