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Some New Measures of Fuzzy Directed Divergence and Their Generalization
Om Parkash,P. K. Sharma 한국수학교육학회 2005 純粹 및 應用數學 Vol.12 No.4
There exist many measures of fuzzy directed divergence corresponding to the existing probabilistic measures. Some new measures of fuzzy divergence have been proposed which correspond to some well-known existing probabilistic measures. The essential properties of the proposed measures have been developed which contains many existing measures of fuzzy directed divergence.
O.P. Thakur,Lakshman Pandey,Devendra Kumar,Om Parkash 한양대학교 세라믹연구소 2004 Journal of Ceramic Processing Research Vol.5 No.2
Dielectric properties are strongly dependent on crystallization conditions, which determined the amount of SrTiO3 and secondary crystalline phases and the microstructure of the glass ceramics. Earlier reports confirm that the crystallization of the SrTiO3 phase in borosilicate (without an alkali oxide additive) as well as in aluminosilicate glassy matrix is found to be complex and difficult. Glass ceramics with varying amounts of alkali oxide (K2O) have been prepared in the strontium titanate borosilicate glass system. The glasses were crystallized in the temperature range 1073-1325 K. It is observed that the pure strontium titanate (SrTiO3) phase can be crystallized at higher temperature by choosing an optimum amount of alkali oxide (K2O). Dielectric characteristics of glass ceramic samples were measured with respect to frequency (0.1 kHz to 1 MHz) and temperature (300 to 500 K). The value of the dielectric constant is higher when Sr2B2O5 crystallizes as a primary phase while it decreases significantly when SrTiO3 crystallizes as a major crystalline phase. The temperature coefficient of the dielectric constant (TCε) becomes negative as the SrTiO3 phase crystallized out in the glass ceramics and the value of the dielectric constant increases with a higher crystallization temperature and time which finally decides the amount of the SrTiO3 phase. Attempts have also been made to correlate the observed dielectric behavior with the electrical contribution of various crystalline phases, residual glassy matrix, crystal-glass interface region and electrode contribution using the impedance spectroscopic technique.
Singh, Bhupendra,Bhardwaj, Aman,Gautam, Sandeep K.,Kumar, Devendra,Parkash, Om,Kim, In-Ho,Song, Sun-Ju Elsevier 2017 Journal of Power Sources Vol.345 No.-
<P><B>Abstract</B></P> <P>Here we present a report on synthesis and characterization of tetravalent metal pyrophosphate (TMP) and alkali carbonate (A<SUB>2</SUB>CO<SUB>3</SUB>; A = Li and/or Na) composites. The TMP-carbonate composites are prepared by mixing indium-doped tin pyrophosphate or yttrium-doped zirconium pyrophosphate with Li<SUB>2</SUB>CO<SUB>3</SUB> or an eutectic mixture of Li<SUB>2</SUB>CO<SUB>3</SUB>-Na<SUB>2</SUB>CO<SUB>3</SUB> in different wt.% ratios. The phase composition, microstructure and electrical conductivity of the sintered specimen are analyzed. In addition, the effect of different TMP and A<SUB>2</SUB>CO<SUB>3</SUB> phases is investigated. A maximum ionic conductivity of 5.5 × 10<SUP>−2</SUP> S cm<SUP>−1</SUP> at 630 °C is observed in this study with a Sn<SUB>0.9</SUB>In<SUB>0.1</SUB>P<SUB>2</SUB>O<SUB>7</SUB>-Li<SUB>2</SUB>CO<SUB>3</SUB> composite. Based on the literature data, TMP-carbonate composites can be considered to be primarily a proton and oxygen-ion co-ionic conductor and, therefore, have strong potential as electrolytes in fuel cells in 500–700 °C range.</P> <P><B>Highlights</B></P> <P> <UL> <LI> New tetravalent metal pyrophosphate (TMP)-alkali carbonate composites are reported. </LI> <LI> TMP-carbonate composites sintered at 750 °C are dense. </LI> <LI> SIP21-L10 composite showed max. conductivity of 5.5 × 10<SUP>−2</SUP> S cm<SUP>−1</SUP> at 630 °C. </LI> <LI> Conductivity of TMP-carbonate is comparable to ceria-carbonate composites. </LI> </UL> </P>
Masood Muhammad Karim,Adeel Ur Rehman,Faisal Wasim Ismail,Om Parkash 대한소화기내시경학회 2024 Clinical Endoscopy Vol.57 No.2
LETTER TO THE EDITOR
Biological and Medicinal Properties of Grapes and Their Bioactive Constituents: An Update
Yadav, Mukesh,Jain, Shalini,Bhardwaj, Aarti,Nagpal, Ravinder,Puniya, Monica,Tomar, Radha,Singh, Vinod,Parkash, Om,Prasad, G.B.K.S.,Marotta, Francesco,Yadav, Hariom The Korean Society of Food Science and Nutrition 2009 Journal of medicinal food Vol.12 No.3
The grape is one of the most valued conventional fruits, worldwide. Although most of the parts of the grapevine are useful, primarily, the grape is considered as a source of unique natural products not only for the development of valuable medicines against a number of diseases, but also for manufacturing various industrial products. Over the last few decades, apart from the chemistry of grape compounds, considerable progress has been made towards exploring the biological activities of various grape-derived constituents. Today, it is well established that in addition to serving as food, the grape is a major source of several phytochemicals. The main biologically active and well-characterized constituent from the grape is resveratrol, which is known for various medicinal properties in human diseases. This review discusses the roles of various grape-derived phytochemicals in relation to various diseases.
Biological and Medicinal Properties of Grapes and Their Bioactive Constituents: An Update
Mukesh Yadav,Shalini Jain,Aarti Bhardwaj,Ravinder Nagpal,Monica Puniya,Radha Tomar,Vinod Singh,Om Parkash,G.B.K.S. Prasad,Francesco Marotta,Hariom Yadav 한국식품영양과학회 2009 Journal of medicinal food Vol.12 No.3
The grape is one of the most valued conventional fruits, worldwide. Although most of the parts of the grapevine are useful, primarily, the grape is considered as a source of unique natural products not only for the development of valuable medicines against a number of diseases, but also for manufacturing various industrial products. Over the last few decades, apart from the chemistry of grape compounds, considerable progress has been made towards exploring the biological activities of various grape-derived constituents. Today, it is well established that in addition to serving as food, the grape is a major source of several phytochemicals. The main biologically active and well-characterized constituent from the grape is resveratrol, which is known for various medicinal properties in human diseases. This review discusses the roles of various grape-derived phytochemicals in relation to various diseases.