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Zinc Application Affects Tissue Zinc Concentration and Seed Yield of Pea(Pisum sativum L.)

Pedosphere 2015年第2期25卷 275-281页

作者： Ejaz RAFIQUE Munazza YOUSRA Muhammad MAHMOOD-UL-HASSAN Sair SARWAR Tauseef TABASSAM tayyaba k.choudhary Land Resources Research Institute National Agricultural Research Centre

A 2-year field experiment was conducted to assess the effect of applied zinc(Zn) on the seed yield of pea(Pisum sativum L.) and to determine the internal Zn requirement of pea with emphasis on the seed and leaves as index *** experiment was carried out at two different locations(Talagang,Chakwal district and National Agricultural Research Centre(NARC),Islamabad) in the Potohar Plateau,Pakistan by growing three pea cultivars(Green feast,Climax,and Meteor).The soils were fertilized with 0,2,4,8,and 16 kg Zn ha^(-1) along with recommended basal fertilization of nitrogen(N),phosphorus(P),potassium(k),and boron(B).Zinc application increased seed yield significantly for all the three *** increase in the pea seed yield(2-year mean) was21%and 15%for Green feast,28%and 21%for Climax,and 34%and 26%for Meteor at Talagang and NARC,*** all cultivars,Zn concentrations in leaves and seed increased to varying extents as a result of Zn *** Zn requirement for near-maximum seed yield varied from 3.2 to 5.3 kg ha^(-1) for different *** concentrations of leaves and seeds appeared to be a good indicator of soil Zn *** critical Zn concentration range sufficient for 95%maximum yield(internal Zn requirement)was 42-53 mg kg^(-1) in the pea leaves and 45-60 mg kg^(-1) in the seeds of the three pea cultivars studied.

关键词： calcareous soils diagnostic criteria vegetable crops zinc fertiliser zinc uptake

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Effect of pollution on DNA damage and essential fatty acid profile in Cirrhinus mrigala from River Chenab

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Chinese Journal of Oceanology and Limnology 2017年第3期35卷 572-579页

作者： Bilal HUSSAIN tayyaba SULTANA Salma SULTANA k.A.AL-GHANIM Shahid MAHBOOB Department of Zoology Government College University Department of Zoology College of Science King Saud University

The objective of this study was to evaluate the effect of anthropogenic pollution on DNA damage and the fatty acid profile of the bottom dweller fish （Cirrhinus mr^gala）, collected from the River Chenab, in order to assess the effect of the toxicants on the quality of the fish meat. The levels ofCd, Hg, Cu, Mn, Zn, Pb, Cr and Sn and of phenols from this river were significantly higher than the permissible limits set by the USEPA. Comet assays showed DNA damage in Cirrhinus mr^gala collected from three different sampling sites in the polluted area of the river. Significant differences were observed for DNA damage through comet assay in fish collected from polluted compared to control sites. No significant differences were observed for DNA damage between farmed and fish collected from upstream. The micronucleus assay showed similar trends. Fish from the highly polluted sites showed less number of fatty acids and more saturated fatty acids in their meat compared to fish from less polluted areas. Several fatty acids were missing in fish with higher levels of DNA in comet tail and micronucleus induction. Long-chain polyunsaturated fatty acids, eicosapentaenoic acid （20：5n-3） was found missing in the fish from polluted environment while it was found in considerable amount in farmed fish 7.8±0.4%. Docosahexaenoic acid （22：6n-3） also showed significant differences as 0.1±0.0 and 7.0±0.1% respectively, in wild polluted and fanned fishes.

关键词： habitat fish comet assay micronucleus assay fatty acids

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Is tumor cell specificity distinct from tumor selectivity in vivo?A quantitative NIR molecular imaging analysis of nanoliposome targeting

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Nano Research 2021年第5期14卷 1344-1354页

作者： Girgis Obaid kimberley Samkoe kenneth Tichauer Shazia Bano Yeonjae Park Zachary Silber Sassan Hodge Susan Callaghan Mina Guirguis Srivalleesha Mallidi Brian Pogue tayyaba Hasan Wellman Center for Photomedicine Massachusetts General Hospital and Harvard Medical SchoolBostonMA02114USA Department of Bioengineering University of Texas at DallasRichardsonTX75080USA Thayer School of Engineering Dartmouth CollegeHanoverNH037551USA Armour College of Engineering Illinois Institute of TechnologyChicagoIL60616USA Division of Health Sciences and Technology Harvard University and Massachusetts Institute of TechnologyCambridgeMA02139USA

The significance and ability for receptor targeted nanoliposomes(tNLs)to bind to their molecular targets in solid tumors in vivo has been questioned,particularly as the efficiency of their tumor accumulation and selectivity is not always predictive of their efficacy or molecular *** study presents,for the first time,in situ near-infrared(NIR)molecular imaging-based quantitation of the in vivo specificity of tNLs for their target receptors,as opposed to tumor selectivity,which includes influences of enhanced tumor permeability and *** show that neither tumor delivery nor selectivity(tumor-to-normal ratio)of cetuximab and IRDye conjugated tNLs correlate with epidermal growth factor receptor(EGFR)expression in U251,U87,and 9L tumors,and in fact underrepresent their imaging-derived molecular specificity by up to 94.2%.Conversely,their in vivo specificity,which we quantify as the concentration of tNL-reported tumor EGFR provided by NIR molecular imaging,correlates positively with EGFR expression levels in vitro and ex vivo(Pearson’s r=0.92 and 0.96,respectively).This study provides a unique opportunity to address the problematic disconnect between tNL synthesis and in vivo *** findings encourage their continued adoption as platforms for precision medicine,and facilitates intelligent synthesis and patient customization in order to improve safety profiles and therapeutic outcomes.

关键词： molecular recognition receptors nanoparticles specificity cancer

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Thermophysical properties of dunite rocks as a function of temperature along with the prediction of effective thermal conductivity

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Natural Science 2010年第6期2卷 626-630页

作者： Aurang Zeb tayyaba Firdous Asghari Maqsood 不详

The thermal conductivity, thermal diffusivity and heat capacity per unit volume of dunite rocks taken from Chillas near Gilgit, Pakistan have been measured simultaneously using transient plane source technique. The temperature dependence of thermal transport properties is studied in the temperature range 83-303 k. Different relations for the estimation of thermal conductivity are also tested. Thermal conductivity data obey the modified Eucken’s law in the temperature range of measurements.

关键词： Dunite Density Porosity Thermal Conductivity Transient Plane Source (TPS) Technique

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Modulating the microenvironment structure of single Zn atom:ZnN_(4)P/C active site for boosted oxygen reduction reaction

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Chinese Journal of Catalysis 2022年第8期43卷 2193-2201页

作者： Syed Shoaib Ahmad Shah tayyaba Najam Jiao Yang Muhammad Sufyan Javed Lishan Peng Zidong Wei School of Chemistry and Chemical Engineering Chongqing UniversityChongqing 400044China key Laboratory of Luminescence Analysis and Molecular Sensing Ministry of EducationSchool of Materials and EnergySouthwest UniversityChongqing 400715China College of Chemistry and Environmental Engineering Shenzhen UniversityShenzhen 518060GuangdongChina School of Physical Science and Technology Lanzhou UniversityLanzhou 730000GansuChina School of Chemical Sciences The University of AucklandAuckland 1142New Zealand Ganjiang Innovation Academy Chinese Academy of SciencesGanzhou 341100JiangxiChina

The electronic structure of catalytic active sites can be influenced by modulating the coordination bonding of the central single metal atom,but it is difficult to ***,we reported the single Zn-atom incorporated dual doped P,N carbon framework(Zn-N_(4)P/C)for ORR via engineering the surrounding coordination environment of active *** Zn-N_(4)P/C catalyst exhibited comparable ORR activity(E_(1/2)=0.86 V)and significantly better ORR stability than that of Pt/C *** also shows respectable performance in terms of maximum peak power density(249.6 mW cm^(-2)),specific capacitance(779 mAh g^(-1)),and charge-discharge cycling stability for 150 hours in Zn-air *** high catalytic activity is attributed to the uniform active sites,tunable electronic/geometric configuration,optimized intrinsic activity,and faster mass transfer during ***,theoretical results exposed that the Zn-N_(4)P configuration is more electrochemically active as compared to Zn-N_(4) structure for the oxygen reduction reaction.

关键词： N-,P-doping Oxygen reduction reaction Zn-air battery Single-atom catalyst Microenvironment modulation

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