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Design and f.brication of.Nif._(2)O_(4)/f.w-layers WS_(2) com.osite f.r supercapacitor electrode m.terial

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f.ontiers of.m.terials Science 2023年第3期17卷 83-94页

作者： Xicheng Gao Jianqiang bi Lulin Xie Chen Liu Key Laboratory f.r Liquid-Solid Structural Evolution and Processing of.m.terials(m.nistry of.Education) School of Materials Science and EngineeringShandong UniversityJinan 250061China

f.w-layers WS_(2) was obtained through unique chem.cal liquid exf.liation of.com.ercial WS_(2).Results showed that af.er the exf.liation process,the thickness of.WS_(2) reduced ***,the Nif._(2)O_(4) nanosheets/WS_(2) com.osite was successf.lly synthesized through a f.cile hydrotherm.l m.thod at 180°C,and then proven by the analyses of.f.eld em.ssion scanning electron m.croscopy,X-ray dif.raction,and X-ray photoelectron *** com.osite showed a high specif.c surf.ce area of.86.89 m.(2)·g^(−1) with an average pore size of.3.13 ***,in the threeelectrode electrochem.cal test,this com.osite exhibited a high specif.c capacitance of.878.04 f.g^(−1) at a current density of.1 A·g^(−1),while in the two-electrode system.the energy density of.the com.osite could reach 25.47 Wh·kg^(−1) at the power density of.70 W·kg^(−1) and m.intained 13.42 Wh·kg^(−1) at the higher power density of.7000 W·kg^(−1).all the excellent electrochem.cal perf.rm.nces dem.nstrate that the Nif._(2)O_(4) nanosheets/WS_(2) com.osite is an excellent candidate f.r supercapacitor applications.

关键词： WS_(2) chem.cal liquid exf.liation Nif._(2)O_(4) com.osite supercapacitor

不同含水量及冻结温度对黑土冻融循环过程有机碳矿化的影响

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水土保持学报 2024年第4期38卷 55-62页

作者：张博刘会敏毕鑫宇高航宋媛胡亚鲜栗现文西北农林科技大学水利与建筑工程学院陕西杨凌712100 西北农林科技大学旱区农业水土工程教育部重点实验室陕西杨凌712100 西北农林科技大学水土保持科学与工程学院黄土高原土壤侵蚀与旱地农业国家重点实验室陕西杨凌712100

[目的]冻融过程土壤呼吸在年土壤呼吸总量中占有重要比例,研究探讨土壤冻融过程中含水量、冻结温度和冻融循环次数对土壤碳矿化动态的影响。[方法]以黑龙江省嫩江县鹤山农场九三水土实验站黑土为研究对象,开展室内冻融程度模拟试验,进行... 详细信息

[目的]冻融过程土壤呼吸在年土壤呼吸总量中占有重要比例,研究探讨土壤冻融过程中含水量、冻结温度和冻融循环次数对土壤碳矿化动态的影响。[方法]以黑龙江省嫩江县鹤山农场九三水土实验站黑土为研究对象,开展室内冻融程度模拟试验,进行7次冻融循环,设置100%田间持水量(100%WHC)、60%田间持水量(60%WHC)和30%田间持水量(30%WHC)3种土壤含水量;10℃恒温处理(对照)、-5℃冻结处理(轻度冻结)和-15℃冻结处理(重度冻结)3种环境温度。[结果]冻融循环次数、含水量和冻结温度对CO_(2)排放量有显著影响,影响度分别为-0.63,0.21,0.14。解冻过程显著增加土壤碳矿化量;轻度冻结时,前3次冻融循环60%WHC土壤碳矿化量比100%WHC和30%WHC分别提高33.0%,35.2%,后4次冻融循环差异不明显;重度冻结时,前2次冻融循环100%WHC土壤碳矿化量,比60%WHC和30%WHC土壤分别提高25.2%,68.0%,后5次冻融循环差异不明显。[结论]冻融循环次数对土壤CO_(2)排放量影响最大,含水量次之,冻结温度最小。冻融作用增加低含水量土壤的CO_(2)累积排放量;降低高含水量土壤的CO_(2)累积排放量;而对中等含水量土壤,轻度冻结增加CO_(2)累积排放量,重度冻结降低CO_(2)累积排放量。一级动力学方程对冻融土壤CO_(2)排放量的拟合效果较好(R^(2)>0.997),含水量和冻结温度对有机碳矿化潜力C0值有显著影响。

关键词：土壤有机碳矿化土壤含水量冻融循环冻结温度黑土

Design of.ultranarrow-bandgap acceptors f.r ef.icient organic photovoltaic cells and highly sensitive organic photodetectors

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Journal of.Energy Chem.stry 2022年第9期31卷 388-394,I0011页

作者： Ye Xu Tao Zhang Huif.ng Yao Jingwen Wang Pengqing bi Jianhui Hou Beijing National Laboratory f.r m.lecular Sciences State Key Laboratory of Polymer Physics and ChemistryCAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of SciencesBeijing 100190China School of.Chem.cal Sciences University of Chinese Academy of SciencesBeijing 100049China

The f.brication of.m.ltif.nctional electronic devices based on the intriguing natures of.organic sem.conductors is crucial f.r organic ***-bandgap m.terials are in urgent dem.nd f.r f.bricating high-perf.rm.nce organic photovoltaic(OPV)cells and highly sensitive near-inf.ared organic photodetectors(OPDs).By com.0}ning alkoxy m.dif.cation and an asym.etric strategy,three narrowbandgap electronic acceptors(BTP-4f.DO-4f.and QO-4f.were synthesized with f.nely tuned m.lecular electrostatic potential(ESP)*** the caref.l m.dulation of.electronic conf.gurations,the optical absorption onsets of.DO-4f.and QO-4f.exceeded 1μ*** experim.ntal and theoretical results suggest that the sm.ll ESP of.QO-4f.is benef.cial f.r achieving a low nonradiative voltage loss,while the large ESP of.BTP-4f.can help obtain high exciton dissociation *** contrast,the asym.etric acceptor DO-4f.with a m.derate ESP possesses balanced voltage loss and exciton dissociation,yielding the best power conversion ef.iciency of.13.6%in the OPV *** were also f.bricated based on the com.0}nation of.PBDB-T:DO-4f.and the as-f.bricated device outputs a high shot-noise-lim.ted specif.c detectivity of.3.05×10^(13) Jones at 850 nm.which is a very good result f.r near-inf.ared *** work is anticipated to provide a rational way of.designing high-perf.rm.nce ultranarrow-bandgap organic sem.conductors by m.dulating the m.lecular ESP.

关键词： Ultranarrow-bandgap acceptors Asym.etric design strategies m.lecular electrostatic potentials Exciton dissociation Non-radiative energy loss

Adsorption of.sodium.oleate at the m.crof.ne hem.tite/aqueous solution interf.ce and its consequences f.r f.otation

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International Journal of.m.ning Science and Technology 2023年第1期33卷 105-113页

作者： Shaojun Bai Jie Li Yunxiao bi Jiaqiao Yuan Shum.ng Wen Zhan Ding State Key Laboratory of.Com.lex Nonf.rrous m.tal Resources Clean Utilization Kunming University of Science and TechnologyKunming 650093China f.culty of.Land Resource Engineering Kunming University of Science and TechnologyKunming 650093China

The adsorption of.sodium.oleate(NaOL)at the m.crof.ne hem.tite/aqueous solution interf.ce was investigated in this *** research indicated that negative ef.ects stem.ed f.om.the dissolution of.the m.crof.ne hem.tite(D50=19.21μm.could be ef.ectively elim.nated via the appropriate dosage of.NaOL at alkali pH *** chem.stry calculation and adsorption test results indicated that RCOOand(RCOO)_(2)^(2-) ions were responsible f.r m.crof.ne hem.tite f.otation at pH *** potential and f.IR m.asurem.nts conf.rm.d the co-adsorption of.m.lecular and ionic oleate species occurred at pH 8.2.X-ray photoelectron spectroscopy(XPS)results f.rther indicated that oleate species interacted with hem.tite surf.ces m.inly through chem.sorption,giving rise to m.lecule/colloid f.rm.tion of.oleate and f.―OL com.lex ***-of.f.ight secondary ion m.ss spectrom.try(Tof.SIm.)results dem.nstrated that oleate species adsorbed onto the hem.tite surf.ces with a thickness of.a f.w ***,the norm.lized peak intensity of.C4H7+ions on the hem.tite sam.le at pH 8.2 increased rem.rkably com.aring with corresponding result of.hem.tite sam.le at pH *** new f.ndings of.the present study well revealed the dissolution of.m.crof.ne hem.tite and the pH ef.ects on the hem.tite f.otation,as well as the adsorption characteristics of.oleate species.

关键词： m.crof.ne hem.tite Oleate species Chem.sorptions Dissolution Tof.SIm.

One-neutron stripping process in the^(209)bi(^(6)Li,^(5)Li)^(210)bi*reaction reaction

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Nuclear Science and Techniques 2024年第6期35卷 120-129页

作者： Gao-Long Zhang Zhen-Wei Jiao Guang-Xin Zhang E.N.Cardozo B.Paes Shi-Peng Hu Jian-Qiang Qian Daniele m.ngoni Wei-Wei Qu Cong-Bo Li Yun Zheng Huan-Qiao Zhang Hui-bin Sun Nan Wang Chun-Lei Zhang J.J.Valiente-Dobón D.Testov m.m.zzocco A.Gozzelino C.Parascandolo D.Pierroutsakou m.La Com.ara A.Goasduf. D.Bazzacco D.R.Napoli f.Galtarossa f.Recchia A.Illana S.Bakes I.Zanon S.Aydin Gde Angelis m.Siciliano R.m.negazzo S.m.Lenzi S.Akkoyun L.f.Canto J.Lubian School of.Physics Beihang UniversityBeijing 100191China Sino-f.ench Institute of.Nuclear Engineering and Technology Sun Yat-Sen UniversityZhuhai 519082China Instituto de f.sica Universidade Federal Fluminense24210-340 NiteróiRio de JaneiroBrazil Laboratorio TANDAR Comisión Nacional de Energía AtómicaBKNA1650 San MartíınArgentina Institute f.r Advanced Study in Nuclear Energy and Saf.ty Shenzhen UniversityShenzhen 518060China Shenzhen Key Laboratory of.Research and m.nuf.cture of.High Purity Germ.nium.m.terials and f.tectors Shenzhen UniversityShenzhen 518060China INf. Sezione di PadovaPaduaItaly Dipartim.nto di f.sica Astronom.a dell’Universita di padova PaduaItaly State Key Laboratory of.Radiation m.dicine and Protection School of Radiation Medicine and ProtectionSoochow UniversitySuzhou 215123China China Institute of.Atom.c Energy Beijing 102413China The Key Laboratory of.Beam.Technology and m.terial m.dif.cation of.m.nistry of.Education College of Nuclear Science and TechnologyBeijing Normal UniversityBeijing 100875China Laboratori Nazionali di Legnaro INFN35020 LegnaroItaly INf. Sezione di Napoli80126 NaplesItaly Dipartim.nto di f.rm.cia Universitàdi Napoli“Federico II”80131 NaplesItaly Departm.nt of.Natural and m.them.tical Sciences Faculty of EngineeringTarsus University33480 MersinTurkey Physics Division Argonne National LaboratoryLemontILUSA Departm.nt of.Physics Sivas Cumhuriyet UniversitySivasTurkey Instituto de f.sica Universidade Federal do Rio de JaneiroRio de Janeiro CP 6852821941-972Brazil

One-neutron stripping process between^(6)Li and^(209)bi was studied at 28,30,and 34 m.V using the in-beam.γ-ray spectroscopy ***γ-γcoincident analysis clearly identif.ed twoγ-rays f.eding the ground and long-lived isom.ric states,which were em.loyed to determ.ne the cross *** one-neutron stripping cross sections were sim.lar to the cross sections of.com.lete f.sion in the^(6)Li+^(209)bi system.but the one-neutron stripping cross sections decreased m.re gradually at the sub-barrier region.A coupled-reaction-channel calculation was perf.rm.d to study the detailed reaction m.chanism.of.the one-neutron stripping process in^(6)*** calculations indicated that the f.rst excited state of.5 Li is critical in the actual one-neutron transf.r m.chanism.and the valence proton of.209bi can be excited to the low-lying excited state in(^(6)Li,^(5)Li)reaction,unlike in the(d,p)reaction.

关键词： Transf.r reaction Weakly bound nuclei Cross section

f.rther investigation on the f.sion of.^(6)Li with ^(209)bi target at near-barrier energies

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Chinese Physics C 2024年第7期48卷 106-117页

作者：张高龙焦振威张广鑫 m.R.Cortes 胡世鹏钱建强 D.m.ngoni 屈卫卫李聪博郑云张焕乔孙慧斌王楠张春雷 J.J.Valiente-Dobón D.Testov m.m.zzocco A.Gozzelino C.Parascandolo D.Pierroutsakou m.La Com.ara A.Goasduf. D.Bazzacco D.R.Napoli f.Galtarossa f.Recchia A.Illana S.Bakes I.Zanon S.Aydin G.de Angelis m.Siciliano R.m.negazzo S.m.Lenzi J.L.f.rreira J.Rangel Serkan Akkoyun L.f.Canto J.Lubian School of.Physics Beihang UniversityBeijing 100191China Sino-f.ench Institute of.Nuclear Engineering and Technology Sun Yat-Sen UniversityZhuhai 519082China Instituto de f.sica Universidade Federal Fluminense24210-340NiteróiRio de JaneiroBrazil Institute f.r Advanced Study in Nuclear Energy&Saf.ty Shenzhen UniversityShenzhen 518060China Shenzhen Key Laboratory of.Research and m.nuf.cture of.High Purity Germ.nium.m.terials and f.tectors Shenzhen UniversityShenzhen 518060China INf. Sezione di PadovaPadovaItaly Dipartim.nto di f.sica Astronom.a dell'Universita di padova PadovaItaly State Key Laboratory of.Radiation m.dicine and Protection School of Radiation Medicine and ProtectionSoochow UniversitySuzhou 215123China China Institute of.Atom.c Energy Beijing 102413China The Key Laboratory of.Beam.Technology and m.terial m.dif.cation of.m.nistry of.Education College of Nuclear Science and TechnologyBeijing Normal UniversityBeijing 100875China INf. Laboratori Nazionali di LegnaroI-35020 LegnaroItaly INf. Sezione di NapoliI-80126 NapoliItaly Dipartim.nto di f.rm.cia Universitàdi Napoli"Federico II"I-80131 NapoliItaly Departm.nt of.Natural and m.them.tical Sciences Faculty of EngineeringTarsus University33480 MersinTurkiye Physics Division Argonne National LaboratoryLemont-ILUSA Departam.nto de m.tem.ética Física e Computaç˜ao Universidade do Estado do Rio de JaneiroFaculdade de Tecnologia27537-000ResendeRio de JaneiroBrazil Departm.nt of.Physics Sivas Cumhuriyet UniversitySivasTurkey Instituto de f.sica Universidade Federal do Rio de JaneiroCP 6852821941-972Rio de JaneiroBrazil

The com.lete and incom.lete f.sion cross sections f.r ^(6)Li+^(209)bi were m.asured using the in-beam.-ray m.thod around the Coulom. *** cross sections of.deuteron captured)incom.lete f.sion(ICf.products were re-quantif.ed experim.ntally f.r this reaction *** results reveal that the ICf.cross section is equivalent to that of.com.lete f.sion(Cf.above the Coulom. barrier and dom.nant near or below the Coulom. barrier.A theoretical calculation based on the continuum.discretized coupled channel(CDCC)m.thod was perf.rm.d f.r the af.rem.ntioned Cf.and ICf.cross sections;the result is consistent with the *** universal f.sion f.nction(Uf.)was also com.ared with the m.asured Cf.cross section f.r dif.erent barrier param.ters,dem.nstrating that the Cf.suppression f.ctor is signif.cantly inf.uenced by the choice of.potential,which can ref.ect both dynam.c and static ef.ects of.breakup on the f.sion process.

关键词： cross section incom.lete f.sion suppression f.ctor weakly bound nuclei

Soil Salinity Changes in the Jordan Valley Potentially Threaten Sustainable Irrigated Agriculture

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Pedosphere 2013年第3期23卷 376-384页

作者： T.G.Am.ARI R.TAHHAN S.ABUBAKE Y.al-zu'bi A.TAHBOUB R.TA'ANY S.ABU-ROm.AN N.al-m.NASEER m.H.STIETIYA Departm.nt of.Water Resources and Environm.ntal m.nagem.nt Faculty of Agricultural Technology Al-Balqa' Applied University Departm.nt of.Natural Resources and Environm.nt Faculty of Agriculture Jordan University of Science and Technology Departm.nt of.Plant Production and Protection Faculty of Agricultural Technology Al-Balqa' Applied University Departm.nt of.biotechnology Faculty of Agricultural Technology Al-Balqa' Applied University Departm.nt of.Land Water and Environment Faculty of Agriculture University of Jordan

The integrated ef.ect of.irrigation and agricultural practices on soil salinity in the Jordan Valley (JV), where over 60% of.Jordan's agricultural produce is grown, was investigated in this study during 2009-2010. Due to the dif.erences in agricultural operations, cropping patterns, irrigation m.nagem.nt, and weather conditions, 206 top- and sub-soil sam.les were taken every 1 to 3 km.f.om.representative f.rm. along a north-south (N-S) transect with 1 to 2 km.lateral extents. Soil electrical conductivity of.saturated extract (EC_(se)), Ca, m., K, Na, Cl, and Na adsorption ratio (SAR) were determ.ned in saturated paste extracts. Results indicated that about 63% of.soils in the JV are indeed saline, out of.which alm.st 46% are m.derately to strongly saline. along the N-S transect of.the JV, EC_(se) increased f.om.4.5 to 14.1 dS m.(-1) in top-soil sam.les. Sim.lar increase was observed f.r the sub-soil sam.les. The m.jor chem.cal com.onents of.soil salinity; i.e., Ca, m., and Cl, also showed a sim.lar increase along the N-S transect of.the valley. m.reover, com.ared to previous f.eld sam.ling, results showed that changes in soil salinity in the JV were dram.tic. In addition, it was f.und that Cl im.osed an existing and potential threat to sensitive crops in 60% of.the soils in the JV, where Cl concentrations were greater than 710 m. L^(-1). Under the prevalent arid m.diterranean conditions, im.roving the m.nagem.nt of.irrigation water, crops, and nutrient inputs and increasing water and f.rtilizer use ef.iciencies should be indispensable to conserve and sustain the already f.agile agricultural soils in the JV.

关键词：土壤盐分灌溉农业约旦威胁河谷样本代表性合资公司种植模式

施氮量对强筋小麦光合、产量、蛋白质含量和加工品质的影响

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麦类作物学报 2024年第4期44卷 462-471页

作者：王文政李亚静张敏毕经鑫杨敏郭振清蔡瑞国河北省作物逆境生物学重点实验室河北科技师范学院农学与生物科技学院河北昌黎066600

为探究冀东地区强筋小麦适宜施氮量,以强筋小麦石优20号和中麦998为材料,通过大田试验设置0 kg·hm.(-2)(N_(0))、180 kg·hm.(-2)(N 180)、210 kg·hm.(-2)(N 210)和240 kg·hm.(-2)(N 240)4个施氮水平,分析了施氮量对强筋小麦光合、... 详细信息

为探究冀东地区强筋小麦适宜施氮量,以强筋小麦石优20号和中麦998为材料,通过大田试验设置0 kg·hm.(-2)(N_(0))、180 kg·hm.(-2)(N 180)、210 kg·hm.(-2)(N 210)和240 kg·hm.(-2)(N 240)4个施氮水平,分析了施氮量对强筋小麦光合、产量、蛋白质含量和加工品质的影响。结果表明,与N_(0)处理相比,施氮后石优20号和中麦998的产量均在N 240处理下增加显著,增幅分别为3.20%和13.95%。随施氮量的增加,小麦旗叶叶绿素含量和光合参数均呈先升后降趋势,且在花后15 d达到最大值。施氮对f.v/f.m.响较小,对ΦPSⅡ影响较明显。旗叶、籽粒内硝酸还原酶和谷氨酰胺合成酶均随施氮量的增加呈先升后降趋势。增施氮肥后籽粒蛋白组分中清蛋白、球蛋白比例下降,醇溶蛋白、谷蛋白比例上升,各组分含量在N 210处理下均最高。面筋含量、沉降值、形成时间和稳定时间均随施氮量的增加先升后降。这说明增施氮肥可改善強筋小麦植株的光合特性,进而提高产量,同时增加植株体内氮代谢相关酶活性和籽粒蛋白质含量并改变蛋白质组分所占比例,有效改善加工品质。本试验条件下,210 kg·hm.(-2)施氮量下,小麦产量和品质较优,该施氮量可作为冀东平原强筋小麦栽培的最佳施氮量。

关键词：施氮量强筋小麦光合产量蛋白质含量加工品质

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品种对三七根系构型的影响及其与品质的关系

南方农业学报 2024年第3期55卷 784-793页

作者：王梦琦魏富刚夏青杨绍周王宝英张金波蔡祖聪赵军南京师范大学地理科学学院江苏南京210023 文山苗乡三七科技有限公司云南文山663000 江苏省土壤利用与农业可持续发展工程研究中心江苏南京210023 江苏省地理信息资源开发与利用协同创新中心江苏南京210023

【目的】分析不同品种三七的根系形态指标及主根皂苷含量差异,探究根系形态特征与三七生物量及皂苷含量和累积量的关系,为基于三七根系形态特征的高品质三七品种选育提供理论依据。【方法】以苗乡三七1号(m.)、苗乡7号(m.)、苗乡8号(m.... 详细信息

【目的】分析不同品种三七的根系形态指标及主根皂苷含量差异,探究根系形态特征与三七生物量及皂苷含量和累积量的关系,为基于三七根系形态特征的高品质三七品种选育提供理论依据。【方法】以苗乡三七1号(m.)、苗乡7号(m.)、苗乡8号(m.)和文院紫七1号(Z1)4个三七品种的2年生植株为研究对象,利用根系扫描仪测定三七的根系形态指标,通过高效液相色谱法测定三七主根中主要皂苷的含量,同时测定三七的地上部和地下部生物量,并分析根系形态指标与三七生物量、根冠比及皂苷含量和累积量的相关性。【结果】不同三七品种的地上部、地下部生物量及根冠比存在一定差异,其中Z1的地上部鲜重最高,m.的地下部鲜重和干重最高,而m.的根冠比最大;不同三七品种的根系形态特征也存在差异,m.、m.和Z1的总根长、总根尖数和分枝数均显著大于m.(Pm.和Z1的总根表面积显著大于m.;不同三七品种主根中的皂苷含量及累积量,以Z1主根中三七皂苷R1、人参皂苷(Rg_(1)、Rb_(1)和Rd)及总皂苷含量最高,以m.主根中各单体皂苷累积量及总皂苷累积量最高。相关分析结果表明,总根表面积、根平均直径、总根体积等根系形态指标与三七地上部和地下部生物量及皂苷累积量均呈正相关,且粗根(根直径>2m.)根表面积、根体积与三七地上部和地下部生物量及皂苷累积量的相关性大于细根(根直径≤2 m.)。【结论】不同三七品种的根系形态特征、生物量、皂苷含量及累积量存在一定差异,且三七的总根表面积、根平均直径、总根体积等根系形态指标与三七的生物量和皂苷累积量关系密切,良好的根系形态特征对三七生长和品质形成至关重要。

关键词：三七品种根系形态皂苷累积量品质

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