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Sir Syed Ahmad Khan
Lubna Irfan
Feb 19, 2020
The field of historical archaeology has been developed extensively in the modern period, specifically in the 20th century. Despite this, it is seen that the method and technique of historical archaeology has been put to use by...
Sir Syed Ahamd Khan Historical Archaeology Asar-us-Sanadeed Surveys Architecture Mughal history Delhi History of Delhi History
Published by: Department of History, University of Karachi
Abundance of Cu<sub>Zn</sub> + Sn<sub>Zn</sub> and 2Cu<sub>Zn</sub> + Sn<sub>Zn</sub> defect clusters in kesterite solar cells
Kesterite solar cells show the highest efficiency when the absorber layers (Cu ZnSnS [CZTS], Cu ZnSnSe [CZTSe] and their alloys) are non-stoichiometric with Cu / (Zn + Sn) ≈ 0.8 and Zn / Sn ≈ 1.2. The fundamental cause is so far...
Abundance of Cu<sub>Zn</sub> + Sn<sub>Zn</sub> and 2Cu<sub>Zn</sub> + Sn<sub>Zn</sub> defect clusters in kesterite solar cells
Kesterite solar cells show the highest efficiency when the absorber layers (Cu ZnSnS [CZTS], Cu ZnSnSe [CZTSe] and their alloys) are non-stoichiometric with Cu / (Zn + Sn) ≈ 0.8 and Zn / Sn ≈ 1.2. The fundamental cause is so far...
Political and Social Struggle of Ghazi-e-Millat Sardar Muhammad Ibrahim Khan
Although a few research studies are available on the Kashmir, Sardar Muhammad Ibrahim Khan, Freedom Movement of Kashmir and the establishment of Azad Kashmir Government. In this paper, an attempt has made to study and analyze...
Sardar Muhammad Ibrahim Khan Political and Social Struggle Freedom Movement Azad Kashmir History Political Science Kashmir Studies Pakistan Studies
Published by: Department of History, University of Karachi
Reversible Zn Metal Anodes Enabled by Trace Amounts of Underpotential Deposition Initiators
Yuhang Dai, Chengyi Zhang, Wei Zhang, Lianmeng Cui, Chumei Ye, Xufeng Hong, Jinghao Li, Ruwei Chen, Wei Zong, Xuan Gao, Jiexin Zhu, Peie Jiang, Qinyou An, Dan JL Brett, Ivan P Parkin, Guanjie He, Liqiang Mai
Mar 24, 2023
Routine electrolyte additives are not effective enough for uniform zinc (Zn) deposition, because they are hard to proactively guide atomic‐level Zn deposition. Here, based on underpotential deposition (UPD), we propose an...
Civil Society under Martial Rule
Contemporary discourse on civil society asserts democracy as a precondition for a successful working of civil society and a vibrant civil society for a smooth working of democracy. Yet there have been exceptions. On one hand...
Published by: Department of History, University of Karachi
Reversible Zn Metal Anodes Enabled by Trace Amounts of Underpotential Deposition Initiators.
Yuhang Dai, Chengyi Zhang, Wei Zhang, Lianmeng Cui, Chumei Ye, Xufeng Hong, Jinghao Li, Ruwei Chen, Wei Zong, Xuan Gao, Jiexin Zhu, Peie Jiang, Qinyou An, Dan JL Brett, Ivan P Parkin, Guanjie He, Liqiang Mai
Mar 24, 2023
Routine electrolyte additives are not effective enough for uniform zinc (Zn) deposition, because they are hard to proactively guide atomic-level Zn deposition. Here, based on underpotential deposition (UPD), we propose an...
Zn(II)- And Mg(II)-Complexes of a Tridentate {ONN} Ligand
The synthesis and characterization of two homoleptic Zn(II)- and Mg(II)-complexes based on a simple tridentate {NNO} ligand are reported. The production of biocompatible atactic poly(lactic acid) (PLA) under industrially...
Zn(II)- And Mg(II)-Complexes of a Tridentate {ONN} Ligand
The synthesis and characterization of two homoleptic Zn(II)- and Mg(II)-complexes based on a simple tridentate {NNO} ligand are reported. The production of biocompatible atactic poly(lactic acid) (PLA) under industrially...
Interactions between an aryl thioacetate-functionalized Zn(II) porphyrin and graphene oxide
Boyang Mao, David G. Calatayud, Vincenzo Mirabello, Benjamin J. Hodges, José Alberto Ribeiro Martins, Stanley W. Botchway, J. M. Mitchels, Sofia I. Pascu
Feb 02, 2016
The surface modification of graphene oxide (GO) is carried out via the supramolecular functionalization route using a Zn(II)-porphyrin which is soluble in common organic solvents on basis of long alkyl chains present at the...
The Aligarh Miracle
Social movements are considered to be a modern phenomenon but they have existed in the past as well. Aligarh movement initiated by Sir Sayyid Ahmed khan is a typical social movement from 19th century, aimed at modernization and...
Aligarh Movement Sir Sayyid Ahmed Khan middle class social movements deprivation theory resource mobilization political processes structural strain theory new social movement theory modernist reform Civil Society Social Movements and Aligarh Movement
Published by: Department of History, University of Karachi
From kesterite to stannite photovoltaics
Taizo Shibuya, Yosuke Goto, Yoichi Kamihara, Masanori Matoba, Kenji Yasuoka, Lee Burton, A Walsh
Jan 01, 2014
Kesterite semiconductors, particularly Cu 2ZnSnS4 (CZTS), have attracted attention for thin-film solar cells. We investigate the incorporation of Fe into CZTS to form the Cu 2(Zn,Fe)SnS4 solid-solution for tuning the lattice...
A high-performance free-standing Zn anode for flexible zinc-ion batteries.
Chenxi Gao, Jiawei Wang, Yuan Huang, Zixuan Li, Jiyan Zhang, Haoze Kuang, Shuhao Chen, Zanxiang Nie, Shuyi Huang, Wei Li, Yubo Li, Shunyu Jin, Yuanjiang Pan, Teng Long, Jikui Luo, Hang Zhou, Xiaozhi Wang
Jun 03, 2021
Zinc-ion batteries (ZIBs) have attracted significant attention owing to their high safety, high energy density, and low cost. ZIBs have been studied as a potential energy device for portable and flexible electronics. Here, a...
Interactions between an aryl thioacetate-functionalized Zn(II) porphyrin and graphene oxide
Boyang Mao, David G. Calatayud, Vincenzo Mirabello, Benjamin J. Hodges, José Alberto Ribeiro Martins, Stanley W. Botchway, J. M. Mitchels, Sofia I. Pascu
Feb 02, 2016
The surface modification of graphene oxide (GO) is carried out via the supramolecular functionalization route using a Zn(II)-porphyrin which is soluble in common organic solvents on basis of long alkyl chains present at the...
A New Sugarcane Cystatin Strongly Binds to Dental Enamel and Reduces Erosion.
AC Santiago, ZN Khan, MC Miguel, CC Gironda, A Soares-Costa, VT Pelá, AL Leite, JM Edwardson, MAR Buzalaf, F Henrique-Silva
Jan 16, 2019
Cu, Zn and As pollution of river insect, plant and water along the metal mine tailing in Waidani area, Okayama prefecture, Japan
Hiroyuki Ii
Aug 11, 2014
Comparing metal concentration and distribution for river insect larva in metal contaminated and not contaminated areas, dobsonfly was clarified to be an effective indicator for metal contamination. The Waidani area was selected...
From kesterite to stannite photovoltaics
Taizo Shibuya, Yosuke Goto, Yoichi Kamihara, Masanori Matoba, Kenji Yasuoka, Lee Burton, A Walsh
Jan 01, 2014
Kesterite semiconductors, particularly Cu 2ZnSnS4 (CZTS), have attracted attention for thin-film solar cells. We investigate the incorporation of Fe into CZTS to form the Cu 2(Zn,Fe)SnS4 solid-solution for tuning the lattice...
Synthesis of Li(I), Zn(II) and Mg(II) complexes of amine bis(phenolates) and their exploitation for the ring opening polymerisation of <em>rac</em>-lactide
In this paper a series of Mg(II), Li(I) and Zn(II) complexes based on two families of amine bis(phenolate)s have been prepared and structurally characterised. In the solid-state the Li(I) complexes form common Li4O4 cubes and...
Unexpected Migratory Insertion Reactions of M(alkyl)<sub>2</sub> (M = Zn, Cd) and Diamidocarbenes
The electrophilic character of free diamidocarbenes (DACs) allows them to activate inert bonds in small molecules, such as NH3 and P4. Herein, we report that metal coordinated DACs also exhibit...
Synthesis of Zn(II) and Al(III) complexes of diaminocyclohexane derived ligands and their exploitation for the ring opening polymerization of rac-lactide
Sarah Kirk, Paul McKeown, Mary Mahon, Gabriele Kociok-Kohn, Timothy Woodman, Matthew Jones
Dec 08, 2017
Two series of ligands based on diaminocyclohexane (DACH) have been prepared and successfully complexed to Al(III) and Zn(II) metal centres. Solution and solid-state studies reveal a tendency to form mono- or bis-ligated forms...
Highly Active Mg(II) and Zn(II) complexes for the ring opening polymerisation of lactide
A range of simple ethylenediamine based Zn(II) and Mg(II) complexes have been prepared and their structures determined via NMR spectroscopy and X-ray crystallography. Preparation of these complexes was also demonstrated to be...
Highly Active Mg(II) and Zn(II) complexes for the ring opening polymerisation of lactide
A range of simple ethylenediamine based Zn(II) and Mg(II) complexes have been prepared and their structures determined via NMR spectroscopy and X-ray crystallography. Preparation of these complexes was also demonstrated to be...
Nernst effect of epitaxial YBCO films doped with Ca and Zn
We report Nernst effect measurements for some crystalline films of Ca and
Zn-doped yttrium barium copper oxide grown by pulsed laser deposition. We argue
that our results and most of the published data for LSCO are consistent...
Re-partitioning of Cu and Zn isotopes by modified protein expression
Cu and Zn have naturally occurring non radioactive isotopes, and their isotopic systematics in a biological context are poorly understood. In this study we used double focussing mass spectroscopy to determine the ratios for...
Unexpected Migratory Insertion Reactions of M(alkyl)<sub>2</sub> (M = Zn, Cd) and Diamidocarbenes
The electrophilic character of free diamidocarbenes (DACs) allows them to activate inert bonds in small molecules, such as NH3 and P4. Herein, we report that metal coordinated DACs also exhibit...
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