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Performance assessment of Alccofine with silica fume,fly ash and slag for development of high strength mortar

Frontiers of Structural and Civil Engineering 2022年第5期16卷 576-588页

作者： shivang d.jayswal Mahesh MUNGULE Civil Engineering department Institute of InfrastructureTechnologyResearch and Management(IITRAM)Ahmedabad 380026India

Previous studies on concrete have identified silica fume(SF)as the most effective supplementary material,whereas fly ash(FA)and slag have been identified as economical materials with long term strength *** of blended cement mortar referred to as blended mortar(BM)requires similar *** present study explores the application of Alccofine(AL)as supplementary material and compares its performance with conventional materials namely SF,FA and ground granulated blast furnace slag(GGBS).The mortar specimens with binder to fine-aggregates(b/f)ratio of 1:2 are prepared at water to binder(w/b)ratios of 0.4 and *** strength values and stress-strain curve for control and BM specimens are obtained at 7,28,56,and 90 d curing *** assessment based on strength activity index,k-value method and strength estimation model confirms that AL,despite lower pozzolanic activity,contributes to strength gain,due to reduced dilution *** of stress-strain curves suggests that the effect of w/b ratio is more dominant on the elastic modulus of BM specimens than on control *** observations from the study identify enhanced strength gain,improved elastic modulus and higher energy absorption as key contributions of AL making it a potential supplementary material.

关键词： Alccofine high strength mortar efficiency factor dilution effect

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Hybrid silver nanoparticles:Modes of synthesis and various biomedical applications

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Electron 2024年第2期2卷 196-218页

作者： Priyanka Singh shivang Singh Balaji Maddiboyina SaiKrishna Kandalam Tomasz Walski Raghvendra A.Bohara Centre for Interdisciplinary Research D.Y.Patil Educational SocietyKolhapurIndia department of Internal Medicine Rauta Hospital Pvt.LtdGaighatUdayapurNepal department of Medical and Scientific Communications Scientific Writing ServicesFreyr Global Regulatory Solutions&ServicesHyderabadTelanganaIndia INSERM U 1066 ‘Micro et Nanomédecines Biomimétiques-MINT’AngersFrance UniversitéAngers UMR-S1066AngersFrance department of Biomedical Engineering Wroclaw University of Science and TechnologyWroclawPoland University of Galway

In the present day,there is a growing trend of employing new strategies to synthesize hybrid nanoparticles,which involve combining various functionalities into a single nanocomposite *** modern methods differ significantly from the traditional classical approaches and have emerged at the forefront of materials *** fabrication of hybrid nanomaterials presents an unparalleled opportunity for applica-tions in a wide range of areas,including therapy to *** focus of this review article is to shed light on the different modalities of hybrid nanoparticles,providing a concise description of hybrid silver nano-particles,exploring various modes of synthesis and classification of hybrid silver nanoparticles,and highlighting their ***-tionally,we discussed core-shell silver nanoparticles and various types of core and shell combinations based on the material category,such as dielectric,metal,or *** two primary classes of hybrid silver nanoparticles were also ***,various hybrid nanoparticles and their methods of synthesis were discussed but we emphasize silica as a suitable candidate for hybridization alongside metal *** choice is due to its hydrophilic surface qualities and high surface charge,which provide the desired repulsive forces to minimize aggregation between the metal nanoparticles in the liquid *** shell encapsulation also provides chemical inertness,robustness and the adaptability to the desired hybrid ***,among all the materials used to coat metal nanoparticles;silica is highly approved.

关键词： biomedical applications hybrid silver nanoparticles polyvinylpyrrolidone silica shell surface enhanced Raman spectroscopy

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Effect of AgI on Conduction Mechanism in Silver-Vanadate Superionic Glasses

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New Journal of Glass and Ceramics 2011年第3期1卷 112-118页

作者： Poonam Sharma d.K. Kanchan Meenakshi Pant Manish S. jayswal Nirali Gondaliya 不详

A quaternary super-ionic glass system xAgI: (95-x) [Ag2O:2V2O5]: 5TeO2, where 40 ≤ x ≤ 65 in steps of 5, has been pre- pared by melt quenching technique. The prepared glass samples are characterized by X-ray, FTIR and dSC studies. As revealed by the FTIR spectra, the oxyanion network is not affected by the addition of AgI. The frequency dependence of the electrical conductivity for various glass compositions at different temperatures has been analyzed in terms of Jon- scher’s universal power law. The measurements reveal that the conductivity increases from σ = 7.62 × 10–7 S/cm to 1.15 × 10–4 S/cm with increasing AgI content. The temperature dependent conductivity obeys the Arrhenius relationship. The impedance and modulus studies indicate the non-debye type of the frequency dispersion for all the glass samples.

关键词： Conductivity Glass Transition Temperature Infrared Spectra Impedance Modulus

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The Effect of Mixed Iodide Salts on the Conductivity Behavior in Ag2O-V2O5-B2O3 Superionic Glass System

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New Journal of Glass and Ceramics 2011年第3期1卷 125-129页

作者： Poonam Sharma d.K. Kanchan Nirali Gondaliya Meenakshi Pant Manish S. jayswal 不详

A superionic mixed metal iodide glass system [(PbI2 –CuI ) - Ag2O- V2O5- B2O3] has been prepared by splat quenching technique. The prepared glass samples are characterized by X-ray diffraction (XRd) and differential scanning calo- rimetry (dSC). The effect of mixed metal iodide salts concentration on electrical properties has been investigated by the complex impedance spectroscopy (CIS). AC conductivity analysis is carried out in the frequency range of 2MHz-1Hz at different temperatures and an enhancement in the conductivity with iodide salts is the main feature of the observed re- sults with an anomaly at 20 mole % of PbI2 –CuI.

关键词： Iodide Salts Ag-Ion Conductors XRd Impedance

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MAPK信号通路与骨质疏松关系的研究进展

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中国矫形外科杂志 2014年第23期22卷 2161-2164页

作者：张波耿彬谭小义姜金陈聪 Chandan Kumar jayswal 吴卓夏亚一兰州大学第二临床医学院骨科兰州730000

该综述介绍了MAPK信号通路(ERK1/2、JNK、P38和ERK5)与骨质疏松相关因子的关系,明确了MAPK信号通路参与骨质疏松的发生与发展。通过药物干预RANKL、OPG、1,25(OH)2d3、PTH、BMP、TGF-β、IL-1、IL-6、TNF-α和雌激素等因子而作用于MAPK... 详细信息

该综述介绍了MAPK信号通路(ERK1/2、JNK、P38和ERK5)与骨质疏松相关因子的关系,明确了MAPK信号通路参与骨质疏松的发生与发展。通过药物干预RANKL、OPG、1,25(OH)2d3、PTH、BMP、TGF-β、IL-1、IL-6、TNF-α和雌激素等因子而作用于MAPK信号通路,可提高骨质疏松的治疗效果。但IL6和TNF-α调节MAPK信号通路参与骨质疏松发生发展的作用还不清楚。骨质疏松发病机制复杂,多种相关信号通路之间存在交互和交叉的作用,以及ERK5通路在骨质疏松中发挥的作用还有待进一步研究。

关键词：信号传导通路 MAPK 骨质疏松

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