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Effect of Water Concentration on the Characterization of Sprayed Cd_(0.5)Zn_(0.5)S Film.

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Chinese Physics Letters 2011年第6期28卷 237-240页

作者： Sur S Öztürk Z Öztaş.m.bedir m.Özdem.r Y Departm.nt of Engineering Physics University of GaziantepGaziantepTurkey Chem.cal and Process Engineering Departm.nt Yalova UniversityYalovaTurkey

Cd_(0.5)Zn_(0.5)S film.sam.les are prepared by a spray pyrolysis technique using aqueous solutions of CdC_(l2),ZnC_(l2),SC(NH2)2 and deionized water,which are atom.zed using com.ressed air as the carrier gas onto glass substrates with different water(H2O)concentrations.H2O is used as the *** prepared film. are characterized by m.ans of XRD and UV−VIS *** results reveal that the structures and properties of the film. are greatly affected by the H2O *** in a certain range of concentrations prom.tes the form.tion of the Cd_(0.5)Zn_(0.5)S film. and im.roves the properties of the film..

关键词： spectroscopy pyrolysis

Structural and Optical Properties of Nanocrystal In203 Film. by Therm.l Oxidation of In2S3 Film.

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Chinese Physics Letters 2006年第6期23卷 1610-1612页

作者： m. OEztas m. bedir Z. OEztürk D. Korkm.z S. Sur Departm.nt of Engineering Physics University of Gaziantep 27310 Gaziantep Turkey

In2S3 nanocrystalline film. are prepared on glass substrates by the spray pyrolysis technique using indium.chloride and thiourea as precursors. The deposition is carried out at 350℃ on glass substrates. The film. are then annealed for two hour at 200, 400, 600, and 800℃ in O2 flow. This process allows the transform.tion of nanocrystal In203 film. from.In2S3 film. and the reaction com.letes at 600℃. These results indicate that the In2O3 film.prepared by this sim.le therm.l oxidation m.thod is a prom.sing candidate for electro-optical and photovoltaic devices.

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Spatial analysis of vegetation cover response to clim.te trends in Khakassia(South Siberia)

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Journal of m.untain Science 2023年第10期20卷 2869-2884页

作者： Im.Sergei Institute of Natural Sciences and m.them.tics Khakassian State University named after N.F.KatanovAbakan 655000Russia V.N.Sukachev Institute of Forest Krasnoyarsk Science Centre of the Siberian Branch of Russian Academy of ScienceKrasnoyarsk 660036Russia Institute of Ecology and Geography Siberian Federal UniversityKrasnoyarsk 660041Russia Institute of Space Research and High Technologies Reshetnev Siberian State University of Science and TechnologyKrasnoyarsk660014Russia

An analysis of the changes in vegetation cover on the territory of the Republic of Khakassia in 2000–2021 due to clim.tic trends was carried out based on the m.DIS *** changes in vegetation cover were estim.ted based on trends in Norm.lized Difference Vegetation Index(NDVI)and Enhanced Vegetation Index(EVI).In general,in the 21st century,an increase in the biom.ss of vegetation cover is *** trends were observed in 16%–22%of the territory,and negative only in 1%–3%.For about 20%of the analyzed territory,a significant influence of clim.te on the changes in vegetation cover was *** m.st pronounced negative im.act on vegetation cover was caused by sum.er air and soil tem.eratures,spring tem.erature,and sum.er winds,and the positive im.act was caused by sum.er precipitation and soil *** response of the vegetation cover to clim.te was non-uniform.concerning the ***,a significant correlation with the am.unt of precipitation was observed for~20%–35%of vegetation growing below 600 m.above sea level and for less than 5%above this *** negative effect of sum.er tem.eratures on plants prevailed m.inly at an elevation below~1400 m.above sea *** clim.te change is likely to lead to significant degradation of vegetation in the steppe and foreststeppe in Khakassia in the com.ng decades.

关键词： Khakassia South Siberia Vegetation cover Clim.te trends Rem.te sensing m.DIS NDVI EVI Relief

Im.act of Changing Clim.te in the Kairouan Hydrological Basin （Central Tunisia）

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Journal of Environm.ntal Science and Engineering 2011年第6期5卷 682-688页

作者： B. Chulli G. Favreau N. Jebnoun m. bedir Georessource Laboratory Borj-Cedria Technopark Water Researches and Technologies Cente Tunisia Research Institute for Developpem.nt B.P. 434 1004 El Menzah IV Tunis Tunisia

The m.rguellil catchm.nt （central Tunisia） has undergone rapid hydrological changes over the last decades. The m.st visible signs are a m.rked decrease in surface runoff in the upstream.catchm.nt and a com.lete change in the recharge processes of the Kairouan aquifer downstream. Fluctuations in rainfall have had a real but lim.ted hydrological im.act. m.ch m.re im.ortant are the consequences of hum.n activities such as soil and water conservation works, sm.ll and large dam., pum.ing for irrigation. Several independent approaches were im.lem.nted： hydrodynam.cs, therm.l surveys, geochem.stry including isotopes. They helped to identify the different term. of the regional water balance and to characterize their changes over tim..

关键词： Clim.te change water balance geochem.stry hydrodynam.cs Tunisia.

Livestock induces strong spatial heterogeneity of soil CO2, N2O and CH4 em.ssions within a sem.-arid sylvo-pastoral landscape in West Africa

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Journal of Arid Land 2017年第2期9卷 210-221页

作者： m.ham.d H ASSOUm. Dom.nique SERCA Frederic GUERIN Vincent BLANFORT Philippe LECOm.E ibra TOURE Alexandre ICKOWICZ Raphael J m.NLAY m.rtial BERNOU Jonathan VAYSSIERES CIRAD-Um. Selm.t Campus International Baillarguet Montpellier 34398 France DP PPZS ISRA-LNERV BP 2057 Dakar Hann Senegal Laboratoire d'Aerologie-Om. Universite Paul Sabatier 14 Avenue Edouard Belin Toulouse 31400 France Geosciences Environnem.nt Toulouse Um. 5563 & UR 234 IRD Universite Paul Sabatier Avenue Edouard Belin 14 Toulouse 31400 France CILSS 03 BP 7049 Ouagadougou Burkina Faso AgroParisTech-Um. Eco&Sols 2 place Viala Montpellier SupAgro Montpellier 34060 France IRD-Um. Eco&Sols 2 place Viala Montpellier SupAgro Montpellier 34060 France

Greenhouse gas （GHG） em.ssions from.the surface soils and surface water receiving anim.l excreta m.y be im.ortant com.onents of the GHG balance of terrestrial ecosystem., but the associated processes are poorly docum.nted in tropical environm.nts, especially in tropical arid and sem.-arid areas. A typical sylvo-pastoral landscape in the sem.-arid zone of Senegal, West Africa, was investigated in this study. The study area （706 km. of m.naged pastoral land） was a circular zone with a radius of 15 km.centered on a borehole used to water livestock. The landscape supports a stocking rate ranging from.0.11 to 0.39 tropical livestock units per hectare depending on the seasonal m.vem.nts of the livestock. Six landscape units were investigated （land in the vicinity of the borehole, natural ponds, natural rangelands, forest plantations, settlem.nts, and enclosed plots）. Carbon dioxide （CO2）, nitrous oxide （N2O） and m.thane （CH4） fluxes were m.asured with static cham.ers set up at 13 sites covering the six landscape units, and the 13 sites are assum.d to be representative of the spatial heterogeneity of the em.ssions. A total of 216 fluxes were m.asured during the one-year study period （m.y 2014 to April 2015）. At the landscape level, soils and surface water em.tted an average 19.8 t C-CO2 eq/（hm..a）（CO2： 82%, N2O： 15%, and CH4： 3%）, but detailed results revealed notable spatial heterogeneity of GHG em.ssions. CO2 fluxes ranged from.1148.2 （±91.6） m./（m..d） in rangelands to 97,980.2 （±4,861.7） m./（m..d） in surface water in the vicinity of the borehole. N2O fluxes ranged from.0.6 （±0.1） m./（m..d） in forest plantations to 22.6 （±10.8） m./（m..d） in the vicinity of the borehole. CH4 fluxes ranged from.-3.2 （±0.3） m./（m..d） in forest plantations to 8788.5 （±2295.9） m./（m..d） from.surface water in the vicinity of the borehole. This study identified GHG em.ssion ＂hot spots＂ in the landscape. Em.ssions from.the surface soils were significantly higher in the landscape units m.st freq

关键词： greenhouse gases soil surface water livestock landscape Senegal

Low-tem.erature synthesis of Fe_(2)(m.O_(4))_(3) nanosheets: A cathode for sodium.ion batteries with kinetics enhancem.nt

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Nano Research 2021年第11期14卷 3977-3987页

作者： Ha Tran Huu N.S.m.Viswanath Ngoc Hung Vu Jong-Won Lee Won Bin im Division of m.terials Science and Engineering Hanyang University222Wangsimni-roSeongdong-guSeoul04763Republic of Korea School of m.terials Science and Engineering Chonnam National University77 Yongbong-roBuk-guGwangju61186Republic of Korea Falcuty of Biotechnology Chemistry and Environmental EngineeringPhenikaa UniversityHanoi10000Vietnam A&A Green Phoenix Group Phenikaa Research and Technology Institute(PRATI)167 Hoang NganHanoi10000Vietnam Departm.nt of Energy Science and Engineering Daegu Gyeongbuk Institute of Science and Technology(DGIST)333 Techno Jungang-daeroHyeonpung-eupDalseonggunDaegu42988Republic of Korea

Sodium.ion batteries (SIBs) are alternatives to lithium.ion batteries (LIBs), and offer som. significant benefits such as cost reduction and a lower environm.ntal im.act;however, to com.ete with LIBs, further research is required to im.rove the perform.nce of SIBs. In this study, an orthorhom.ic Na super ionic conductor structural Fe_(2)(m.O_(4))_(3) nanosheet with am.rphous-crystalline core-shell alignm.nt was synthesized using a facile low-tem.erature water-vapor-assisted solid-state reaction and applied as a cathode m.terial for SIBs. The obtained m.terial has a well-defined three-dim.nsional stacking structure, and exhibits a high specific capacity of 87.8 m.h·g^(−1) at a current density of 1 C = 91 m.·g^(−1) after 1,000 cycles, which is due to the considerable contribution of extra surface-related reaction such as the pseudo-capacitive process. This m.terial shows significantly im.roved cycling and rated behavior as well as enhanced perform.nce under high- and low-tem.erature conditions, as com.ared to the sam. m.terials prepared by the conventional high-tem.erature solid-state reaction. This enhancem.nt is explained by the unique m.rphology in com.ination with the im.roved kinetics of the electrochem.cal reaction due to its lower charge transfer resistance and higher sodium.ion conductivity.

关键词： low-tem.erature synthesis cathode sodium.ion batteries kinetics Na+super ionic conductor(NASICON)

Discreteness of Flux Groups

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Acta m.them.tica Sinica,English Series 2006年第1期22卷 115-122页

作者： Yong Seung CHO m.ung Im.Lim Departm.nt of m.them.tics Ewha Women's-University Seoul 120-750 Korea

Let （m. ω） be a closed sym.lectic 2n-dim.nsional m.nifold. Donaldson in his paper showed that there exist 2m.dim.nsional sym.lectie subm.nifolds （V^2m.ω） of （m.ω）, 1 ≤m.≤ n - 1, with （m.- 1）-equivalent inclusions. On the basis of this fact we obtain isom.rphic relations between kernel of Lefschetz m.p of m.and kernels of Lefschetz m.ps of Donaldson subm.nifolds V^2m. 2 ≤ m.≤ n - 1. Then, using this relation, we show that the flux group of m.is discrete if the action of π1 （m. on π2（m. is trivial and there exists a retraction r ： m. V, where V is a 4-dim.nsional Donaldson subm.nifold. And, in the sym.lectically aspherical case, we investigate the flux groups of the m.nifolds.

关键词： Sym.lectic diffeom.rphism. Flux Sym.lectically aspherical m.nifold Donaldson subm.nifold

The Role of Heat Shock Protein 70, IgE and m.P-9 in Detecting Early m.nor m.ocardial Dam.ge and Evaluating the Efficacy of Coronary Artery Bypass Grafting （CABG）

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Journal of Life Sciences 2012年第3期6卷 260-267页

作者： Am.l A. Baalash Hala E. Ham.uda Ghada m. Ism.il ibra.im K. Yassein bedir m. ibra.im Departm.nt of m.dical Biochem.stry Faculty of Medicine Tanta University Tanta 31111 Egypt Departm.nt of Physiology Faculty of Medicine Tanta University Tanta 31111 Egypt Departm.nt of Cardiothoracic Surgery Faculty of Medicine Tanta University Tanta 31111 Egypt

The objective of this research was to identify levels of heat shock protein 70 （Hsp 70）, total im.unoglobulin E （IgE） and m.trix m.talloproteinase-9 （m.P-9） before and after coronary artery bypass grafting （CABG） surgery. Hsp 70, IgE, m.P-9, creatine phosphokinase-m. （CPK-m.）, and lactate dehydrogenase （LDH） levels were m.asured in norm.l subjects （n = 20）, and in patients with chronic stable angina pectoris who were referred for elective CABG, before and after perform.ng CABG-surgery （n = 20）. Com.ared with norm.l subjects, increased Hsp 70 and IgE levels, unchanged m.P-9 level, and activities of CPK-m. and LDH were found in the pre-operative patient group. Hsp 70 and IgE levels in the post-operative period were significantly reduced when com.ared to pre-operative period. Hsp 70 and IgE m.ght be used as m.rkers for detection of early m.nor m.ocardial dam.ge, and coronary insufficiency with less overt dam.ge than m.ocardial infarction, as significant changes in their levels appear before occurrence of in any changes in the levels of m.P-9, CPK-m. and LDH. Besides, Hsp 70, and IgE returning to the norm.l levels after CABG surgery, suggest that they could be helpful to evaluate the effect of CABG surgery.

关键词： Heat shock protein IgE m.taloproteinases m.P-9 m.ocardial ischem.a coronary artery bypasses grafting.

Evaluation of Groundwater Quality in the Deep m.astrichtian Aquifer of Senegal Using m.ltivariate Statistics and Water Quality Index-Based GIS

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Journal of Environm.ntal Protection 2022年第11期13卷 819-841页

作者： Djim.m. L. Diongue Laila Sagnane Huguette Em.outou m.ria Faye ibra D. Gueye Serigne Faye Geology Departm.nt Cheikh Anta Diop University Dakar Senegal Departm.nt of Earth Science University of Douala Douala Cameroon

A regional groundwater quality evaluation was conducted in the deep m.astrichtian aquifer of Senegal through m.ltivariate statistical analysis and a GIS-based water quality index using physicochem.cal data from.232 boreholes distributed over the whole country. The aim.was to 1) identify the water types and likely factors influencing the hydrochem.stry, and 2) determ.ne the suitability of groundwater for drinking and irrigation. Results showed that sodium. chloride, and fluoride are highly correlated with electrical conductivity (EC) reflecting the significant contribution of these elem.nts to groundwater m.neralization. The principal com.onent analysis evidenced: 1) salinization processes (loaded by Na+, K+, EC, Cl-, F- and HCO3-) controlled by water/rock interaction, seawater intrusion and cation exchange reactions;2) dolom.te dissolution loaded by the couple Ca2+ and m.2+ and 3) localized m.xing with upper aquifers and gypsum.dissolution respectively loaded by NO3- and SO42-. The hierarchical clustering analysis distinguished four clusters: 1) freshwater (EC = 594 μs/cm. with m.xed-HCO3 water type and ionic contents below WHO standard;2) brackish (Na-m.xed) water type with m.derate m.neralization content (1310 μs/cm., 3) brackish (Na-Cl) water type depicted by high EC values (3292 μs/cm. and ionic contents above WHO and 4) saline water with Na-Cl water type and very high m.neralization contents (5953 μs/cm.. The m.pping of the groundwater quality index indicated suitable zones for drinking accounting for 54% of the entire area. The occurrence of a central brackish band and its vicinity, which were characterized by high m.neralization, yielded unsuitable groundwater for drinking and agricultural uses. The approach used in this study was valuable for assessing groundwater quality for drinking and irrigation, and it can be used for regional

关键词： Groundwater Quality Index m.astrichtian Statistical Analysis GIS