Dinesh Tripathi

Publications : 11
Aldex : 10
H-index : 6
Citations : 301


physics

A Refinement of an Inequality due to Ankeny and Rivilin

Dinesh Tripathi

Jan 1, 2020
Let $p(z)= \sum_{\nu =0}^n a_\nu z^\nu$ be a polynomial of degree $n$, $ M(p,R):= \max_{|z|=R \ge 0} |p(z)|,$ and $M(p,1):=M(p)$. Then by well-known result due to Ankeny and Rivlin \cite{Ankeny}, we have \begin{eqnarray*} M(p. R)\le \left(\frac{R^n+1}{2} \right) M(p), ~~~R\ge 1. \end{eqnarray*} In this paper, we sharpen and generalizes the above inequality by using a result due to Govil \cite{Govi...

mathematics

A note on Eneström–Kakeya theorem for a polynomial with quaternionic variable

Dinesh Tripathi

Jan 1, 2020 in Arabian Journal of Mathematics
In this paper, we present certain results concerning the location of the zeros of polynomials with quaternionic variable which generalize and refine some known Eneström–Kakeya type bounds for the zeros of polynomials.

hepatology

Terutroban, a TP-receptor antagonist, reduces portal pressure in cirrhotic rats

Eugenio Rosado et 7 al.

Aug 7, 2013 in Hepatology
Increased production of vasoconstrictive prostanoids, such as thromboxane A2 (TXA2), contributes to endothelial dysfunction and increased hepatic vascular tone in cirrhosis. TXA2 induces vasoconstriction by way of activation of the thromboxane‐A2/prostaglandin‐endoperoxide (TP) receptor. This study investigated whether terutroban, a specific TP receptor blocker, decreases hepatic vascular tone and...

hepatology

Increased number and function of endothelial progenitor cells stimulate angiogenesis by resident liver sinusoidal endothelial cells (SECs) in cirrhosis through paracrine factors

Savneet Kaur, Shiv K. Sarin et 7 al.

Dec 1, 2012 in Journal of Hepatology
BACKGROUND & AIMS Recent studies have shown a pathological role of angiogenesis in the progression of chronic liver diseases (CLDs). The present study focused on numbers and angiogenic functions of circulating endothelial progenitor cells (EPCs) in patients with cirrhosis. METHODS Circulating EPCs were counted by flow-cytometry, and correlated with different parameters of liver disease. They we...

Association between Lipid Profile and Ovarian Cancer in women of North India

Sunita Tiwari et 7 al.

Jul 30, 2015 in International Journal of Biomedical Research

Blood-Brain Barrier Dysfunction in Ischemic Stroke: Targeting Tight Junctions and Transporters for Vascular Protection

Wazir Abdullahi et 3 al.

Jun 27, 2018 in American Journal of Physiology-Cell Physiology
The blood-brain barrier (BBB) is a physical and biochemical barrier that precisely controls cerebral homeostasis. It also plays a central role in the regulation of blood-to-brain flux of endogenous and exogenous xenobiotics and associated metabolites. This is accomplished by molecular characteristics of brain microvessel endothelial cells such as tight junction protein complexes and functional exp...

physics

Thermal conductivity, coefficient of linear thermal expansion and mechanical properties of LDPE/Ni composites

Dinesh Tripathi, Tapas Kumar Dey

Feb 9, 2013 in Indian Journal of Physics
Thermophysical and mechanical properties of low density polyethylene (LDPE) filled with nickel powder (10 μm) is reported. The composites are characterized by XRD, SEM, DSC and TGA. XRD analysis indicates that Ni affects the crystallinity of LDPE, whereas, scanning electron micrographs reveals formation of Ni clusters/conducting chains especially for high filler concentration. The DSC and TGA data...

mathematics

Some Inequalities for the Derivative of Polynomials

Sunil Hans, Babita Tyagi et 2 al.

Jan 1, 2014 in Journal of Mathematics
If is a polynomial of degree , having no zeros in , then Aziz (1989) proved , where . In this paper, we consider a class of polynomial of degree , defined as and present certain generalizations of above inequality and some other well-known results.

Bioengineering, Vol. 10, Pages 131: Primary Hepatocyte Isolation and Cultures: Technical Aspects, Challenges and Advancements

Impreet Kaur, Shiv Sarin et 6 al.

Jan 18, 2023 in Bioengineering
Bioengineering, Vol. 10, Pages 131: Primary Hepatocyte Isolation and Cultures: Technical Aspects, Challenges and Advancements Bioengineering doi: 10.3390/bioengineering10020131 Authors: Impreet Kaur Ashwini Vasudevan Preety Rawal Dinesh Tripathi Seeram Ramakrishna Savneet Kaur Shiv Sarin Hepatocytes are differentiated cells that account for 80% of the hepatic volume and perform all major functions...

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