79 research outputs found
Minimum Convex and Differentiable Cost Flow Problem with Time Windows
This paper presents a new version of the Minimum Cost Flow Problem (MCFP). This version is the Minimum Convex and Differentiable Cost Flow Problem with Time Windows (MCDCFPTW). Given a directed graph G=(V,A), where V is a set of vertices, A is a set of arcs. Each vertex i has a time-window [ai,bi] within which the vertex i may be visited with a non-negative service time ti where,ai<ti<bi. Each arc (i,j) is associated with thre
Phenomenology of strangeness production at high energies
The strange-quark occupation factor () is determined from the
statistical fit of the multiplicity ratio in a wide range
of nucleon-nucleon center-of-mass energies (). From this
single-strange-quark-subsystem, was parametrized as a
damped trigonometric functionality and successfully implemented to the hadron
resonance gas model, at chemical semi-equilibrium. Various particle ratios
including , , and
are well reproduced. The phenomenology of
suggests that, the hadrons ( raises) at
GeV seems to undergo a phase transition to a mixed
phase ( declines), which is then derived into partons (
remains unchanged with increasing ), at GeV.Comment: 6 pages, 2 figures, accepted for publication in EP
SYNTHESIS AND CHARACTERIZATION OF AMINO-BASED CARBOXYMETHYL CHITOSAN AND ITS ADSORPTION FEATURES TOWARDS CU (II) AND ZN (II) IONS
This work was supported by the Program 211 of the Government of the Russian Federation, RFBR grants 17-03-00641 and 18-29-12129mk, the State Task from the Ministry of the Education and Science of the Russian Federation
Detection of Cancer Stem Cells in Colorectal Cancer: Histopathological and Immunohistochemical Study
BACKGROUND: Growing evidence supports the notion that the onset of tumorigenesis could occur through cancer stem cells (CSCs). These tumour cells show low proliferative rates, high self-renewal capacity, propensity to differentiate into active proliferating tumour cells & resistance to chemoradiotherapy thus, possibly causing local recurrences & metastasis formation. CD44 has been used as a marker to isolate CSCs from colorectal carcinoma (CRC).AIM: To investigate the immunohistochemical expression of cancer stem cells marker (CD44) in CRC and correlate its expression with the clinicopathological aspects, TNM staging and modified Dukes’ classification.MATERIALS AND METHODS: Tumour biopsies from colectomy specimens of 60 patients with CRC were stained with hematoxylin-eosin for histological evaluation then immunostained with monoclonal antibodies against CD44 which was detected in term of negative or positive expression.RESULTS: CD44 was demonstrated in 58.3% (35/60) of cases and showed statistically significant correlation with tumour site and histological type (p-value < 0.05). However, CD44 showed statistically insignificant inverse correlation with tumour invasiveness (T), lymph node status (N), grade, TNM stage grouping and modified Dukes’ classification, while it was directly correlated with distant metastasis (M) (p-value > 0.05). Chi-square /Fisher exact test proportion independence and the p-value are set significant at 0.05 level.CONCLUSION: the CD44 rate of expression is higher in the colon than rectum and in adenocarcinoma than mucinous and undifferentiated carcinoma. CD44 showed statistically insignificant relation with T, N, M, grade, TNM stage grouping and modified Dukes’ classification
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