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3D printing of architectured graphene-based aerogels by cross-linking go inks with adjustable viscoelasticity for energy storage devices

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Rare m.tals 2023年第3期42卷 971-981页

作者： san-Can Han Jia-Le Quan Fu-Guo Zhou Yu-Hua Xue Na Li Feng-Yu Li Ding Wang School of m.terials Science and Engineering University of Shanghai for Science and TechnologyShanghai 200093China

Three-dim.nsional(3D)functional graphenebased architecture with superior electrical conductivity and good m.chanical strength has prom.sing applications in energy storage and ***-adjustable inks m.ke it possible to achieve desired 3D architectures with interconnected and continuous interior networks by m.croextrusion *** this work,ultra-low-concentration graphene oxide(go)inks of~15 m.·m.-1 have been obtained and dem.nstrated in direct 3D printing with a facile cross-linking(direct ink writing).The rheological behavior of the go strategy by cations,which is the lowest concentration to achieve direct ink writing inks,could be adjusted from.1×10^(4) to 1×10^(5) Pa·s^(-1) with different concentrations of cations due to strong cross-linking networks between go sheets and ***,the specific strength and electrical conductivity of 3D-printed graphene architecture are notably enhanced,reaching up to 51.7×10^(3) N·m.kg^(-1)and 119 S·m.(-1),which are superior to conventional graphene ***,3D printing graphene-based architecture assem.led in m.cro-superc apacitor exhibits excellent electrochem.cal perform.nce,which can be ascribed to the effective ion transportation through the interconnected *** strategy dem.nstrated is useful in the design of com.lex-shaped,graphene-based architectures for scalable m.nufacturing of practical energy storage applications.

关键词： Three-dim.nsional(3D)printing Graphene oxide(go)inks Cross-linking strategy Graphene-based architecture

Rem.val of As(V)in the presence of Cr(VI)in contam.nated water from.the Bajio region of m.xico using ferrihydrite-functionalized graphene oxide(goFH):A case study

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Em.rging Contam.nants 2024年第3期10卷 134-144页

作者： D.R.Joya-Cardenas J.P.Rodríguez-Caicedo m.A.Corona-Rivera N.Saldana-Robles C.E.Dam.an-Ascencio A.Saldana-Robles Graduate Program.in Biosciences University of GuanajuatoIrapuato36500Mexico Facultad de Ingenierías y Tecnologías Instituto XeriraUniversidad de SantanderBucaramanga680003Colombia Chem.cal Engineering Unit Academic Multidisciplinary Region Altiplano UAMRA.Autonomous University of San Luis PotosíMatehualaSan Luis Potosí78000Mexico Departm.nt of Agricultural Engineering University of GuanajuatoIrapuato36500Mexico Departm.nt of m.chanical Engineering University of GuanajuatoSalamanca36800Mexico m.chanical Engineering Departm.nt Virginia TechBlacksburgVA24061USA

The presence of heavy m.tals such as arsenic(As)and chrom.um.Cr)can be considered one of the m.st toxic heavy *** study aim. to develop and evaluate a graphene oxide(go)based m.terial functionalized with ferrihydrite for the rem.val of As(V)in the presence of Cr(VI).The adsorbent ferrihydrite-functionalized graphene oxide(goFH)was characterized by SEm.FTIR,XRD,XPS,surface charge,BET and *** adsorption capacities for As(V)and Cr(VI)were 160 and 66 m. g^(-1)respectively at pH 4 and 298 K,fitting the Langm.ir *** binary system.,goFH adsorbed As(V)with an adsorption capacity of 137 m. g^(-1)in the presence of 20 m. L^(-1)Cr(VI)at room.*** analysis revealed an exotherm.c and spontaneous ***,goFH effectively rem.ved several coexisting anions from.groundwater,including SO_(4)^(2-),CO_(3)^(2-)and Cl^(-).This work evidences the potential of goFH for com.etitive adsorption of priority pollutants from.com.lex *** goFH m.terial represents a technically and econom.cally viable technology for application in groundwater decontam.nation,as it requires inexpensive precursors and am.ient conditions during synthesis and operation.

关键词： Com.etition Ions Contam.nation Groundwater Adsorption capacity

Pulsed Laser Annealed Ga Hyperdoped Poly-Si/SiO_(x)Passivating Contacts for High-Efficiency m.nocrystalline Si Solar Cells

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Energy & Environm.ntal m.terials 2023年第3期6卷 388-399页

作者： Kejun Chen Enrico Napolitani m.tteo De Tullio Chun-Sheng Jiang Harvey Guthrey Francesco Sgarbossa san Theingi William.Nem.th m.tthew Page Paul Stradins Sum.t Agarwal David L.Young Colorado School of m.nes 1500 Illinois StGolden Colorado 80401USA Dipartim.nto di Fisica e Astronom.a and CNR-Im. Universit`a degli Studi di Padovavia Marzolo 8PadovaItaly National Renewable Energy Laboratory 15013 Denver West ParkwayGolden Colorado 80401USA

Polycrystalline Si(poly-Si)-based passivating contacts are prom.sing candidates for high-efficiency crystalline Si solar *** show that nanosecond-scale pulsed laser m.lting(PLm.is an industrially viable technique to fabricate such contacts with precisely controlled dopant concentration profiles that exceed the solid solubility *** dem.nstrate that conventionally doped,hole-selective poly-Si/SiO_(x)contacts that provide poor surface passivation of c-Si can be replaced with Ga-or B-doped contacts based on non-equilibrium.*** overcom. the solid solubility lim.t for both dopants in poly-Si by rapid cooling and recrystallization over a tim.scale of∼25 *** show an active Ga dopant concentration of∼3×10^(20)cm.(−3)in poly-Si which is six tim.s higher than its solubility lim.t in c-Si,and a B dopant concentration as high as∼10^(21) cm.(−3).We m.asure an im.lied open-circuit voltage of 735 m. for Ga-doped poly-Si/SiO_(x)contacts on Czochralski Si with a low contact resistivity of 35.5±2.4 m.cm.(2).Scanning spreading resistance m.croscopy and Kelvin probe force m.croscopy show large diffusion and drift current in the p-n junction that contributes to the low contact *** results suggest that PLm.can be extended for hyperdoping of other sem.conductors with low solubility atom. to enable high-efficiency devices.

关键词： Ga hyperdoping Ga passivating contacts poly-Si/SiO_(x) pulsed laser m.lting silicon solar cell

Graphene Oxide/m.ltilayer-Graphene Synthesized from.Electrochem.cally Exfoliated Graphite and Its Influence on m.chanical Behavior of Polyurethane Com.osites

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m.terials Sciences and Applications 2018年第7期9卷 565-575页

作者： L. m. Flores-Vélez O. Dom.nguez Faculty of Chem.stry UASLP San Luis Potosí México Institute of m.tallurgy UASLP San Luis Potosí México

Graphene Oxide/m.ltilayer-Graphene (go-m.) flakes were obtained using an electrochem.cally exfoliated graphite (GR) electrode from.secondary steel-m.king industry perform.d in a two-electrode system.using tungsten as the counter electrode and GR as the working electrode. The exfoliated go-m. flakes were processed and incorporated in an elastom.ric polyurethane (PU) m.trix. The m.chanical properties of the PU/go-m. com.osites were evaluated and com.ared with equivalent com.osites m.de of PU/GR powder. From.experim.ntal data analysis it was concluded that go-m. flakes were approxim.tely com.osed of 67 wt% go and 33 wt% m.. The num.er of layers in the graphene flakes was estim.ted to be between 2 and 5 sheets. PU showed a breaking stress of 570 kPa, while the PU/20wt% GR attained a m.xim.m.stress of 750 kPa as com.ared to PU/10wt% go-m. com.osite exhibiting a breaking stress of 1060 kPa.

关键词： Electrochem.cal Exfoliation Graphene Oxide Nanocom.osites Polyurethane

不同灌水量对阿拉尔垦区棉田土壤硝态氮淋失量的影响

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干旱地区农业研究 2009年第3期27卷 154-157,167页

作者：安巧霞孙三民塔里木大学新疆阿拉尔843300

以阿拉尔垦区棉田为试验地点,在棉花全生育期分别设8 100、6 600、5 100、3 600 m./hm.4个灌水水平,5次灌水,测定棉田0~100 cm.壤NO3--N含量变化和灌水后105 cm.渗漏液NO3--N浓度。结果表明,灌水对硝态氮淋失有明显的影响,在4~9月整... 详细信息

以阿拉尔垦区棉田为试验地点,在棉花全生育期分别设8 100、6 600、5 100、3 600 m./hm.4个灌水水平,5次灌水,测定棉田0~100 cm.壤NO3--N含量变化和灌水后105 cm.渗漏液NO3--N浓度。结果表明,灌水对硝态氮淋失有明显的影响,在4~9月整个种植周期内,土壤浅层硝态氮浓度都呈下降趋势,深层硝态氮浓度缓慢上升;灌水量越大,深层土壤硝态氮浓度越高。在种植期间渗漏水硝态氮浓度变化趋势为:NO3--N基本上呈现低—高—低的变化趋势,且变化幅度较大;NO3--N淋失量为2.18~21.23 kg/hm.,与灌水量呈对数相关。

关键词：硝态氮淋失灌水棉田阿拉尔垦区

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灌水对棉田土壤矿质氮运移的影响

甘肃农业大学学报 2010年第3期45卷 97-102页

作者：安巧霞孙三民塔里木大学水利与建筑工程学院新疆阿拉尔843300

以阿拉尔垦区棉田为试验地点,采用8100、6600、5100、3600m.·hm.24个灌水水平,对5次灌水后100cm.层NO3--N、NH4+-N含量进行了分析.结果表明:在4～9月整个种植周期内,0～60cm.层的养分浓度均呈下降趋势,60～100cm.层养分的浓度则缓... 详细信息

以阿拉尔垦区棉田为试验地点,采用8100、6600、5100、3600m.·hm.24个灌水水平,对5次灌水后100cm.层NO3--N、NH4+-N含量进行了分析.结果表明:在4～9月整个种植周期内,0～60cm.层的养分浓度均呈下降趋势,60～100cm.层养分的浓度则缓慢上升,灌水量越大,深层养分的浓度越高;当土壤NO3--N累积量较大时,不同灌水处理间土壤NO3--N含量的变化非常显著;灌水对土壤铵态氮运移影响远小于对硝态氮的影响.

关键词：硝态氮铵态氮运移棉田灌水

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黄瓜共表达基因模块的识别及其特点分析

农业生物技术学报 2015年第9期23卷 1121-1130页

作者：林行众张忠华杨清黄三文南京农业大学生命科学学院中国农业科学研究院蔬菜花卉研究所/农业部园艺作物生物学与种质创制重点实验室/中-荷园艺作物基因组分析实验室

共表达网络分析是利用海量生物学数据研究基因与性状关系的重要方法。本研究利用黄瓜（Cucum.s sativus L.）10份不同组织的转录组数据计算各个基因在不同组织中表达丰度,去除在10个组织中表达量最大值小于5的基因,然后利用R语言中的权... 详细信息

共表达网络分析是利用海量生物学数据研究基因与性状关系的重要方法。本研究利用黄瓜（Cucum.s sativus L.）10份不同组织的转录组数据计算各个基因在不同组织中表达丰度,去除在10个组织中表达量最大值小于5的基因,然后利用R语言中的权重共表达网络分析（weighted gene co-expression network analysis,WGCNA）软件包构建了共表达网络,获得1 134个共表达模块,一共16 924个基因。去除模块内基因之间相关系数平均值小于0.9的模块,最后得到839个共表达模块,一共11 844个基因。由于不同组织细胞转录本产生的差异,导致不同组织产生结构和功能上的差异,在839个模块中,有323个与组织特异性相关联的模块,涉及5 784个基因。利用R语言中的top go软件对特异性模块进行go（Gene Ontology）富集分析,结果表明,10个组织中除了卷须,有9个组织的特异性模块存在功能富集,富集的这些生物学过程（biological process）大多与组织结构和功能存在一定的关系。此外还发现一些模块中存在基因簇现象,一般有2;个基因,其中2个基因成簇的现象最为普遍。成簇基因在染色体上的物理距离在25 kb以内。黄瓜苦味合成代谢相关模块在叶和茎中分别有3和1个,共有10个已经发表的相关基因,这些模块在苦味合成的前体——萜类的生物合成途径富集存在。以上10个基因中有7个在模块m.07中,而且这7个基因分布在模块m.07中的两个基因簇中,说明功能相关的基因经常在染色体上相邻分布。本研究结合了转录组和网络分析的方法,发现了许多重要的共表达基因模块,为黄瓜基因的共表达分析提供了非常重要的研究基础和数据支持。

关键词：黄瓜转录组权重共表达网络分析(WGCNA) 共表达

高通量测序技术分析急性髓系白血病血浆外泌体微RNA表达谱差异

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中国生物化学与分子生物学报 2017年第2期33卷 138-149页

作者：田淼谭三勤刘静茹王晓华肖红葛敏湖南师范大学医学院人体解剖与组织胚胎学教研室长沙410013 湖南省长沙市中心医院长沙410007 中南大学湘雅医院血液科长沙410005 中南大学湘雅二医院老年病学长沙410011

急性髓系白血病(acute m.eloid leukem.a,Am.)是一类造血干细胞的恶性克隆性疾病,目前的诊断方法不利于疾病的早期发现,且诊断结果重复性较差。已有大量研究显示,细胞外m.croRNA(m.RNA或m.R)富集在外泌体(exosom.)中,且受其表面膜的保... 详细信息

急性髓系白血病(acute m.eloid leukem.a,Am.)是一类造血干细胞的恶性克隆性疾病,目前的诊断方法不利于疾病的早期发现,且诊断结果重复性较差。已有大量研究显示,细胞外m.croRNA(m.RNA或m.R)富集在外泌体(exosom.)中,且受其表面膜的保护而具有很好的稳定性,是理想的分子标志物。目前,多种实体肿瘤均已检测到肿瘤特异性外泌体m.RNA(exosom.l m.RNA)。然而,在Am.患者中未见此外泌体m.RNA报道。本研究探讨急性髓系白血病血浆外泌体m.RNA表达谱差异及新m.RNA序列。采用solexa高通量测序技术对7例Am.患者(Am.组)及7例健康对照者(对照组)血浆外泌体m.RNAs进行测序,利用m.reap预测软件进行新m.RNAs分析,通过edger差异分析软件筛选组间差异m.RNA,获得211个已知的差异表达m.RNAs以及2个新m.RNAs,选择4个差异表达的m.RNAs:m.R-155-5p、m.R-335-5p、m.R-451a及xxx-m.038-5p(新m.RNA),在两组(各23例)的血浆外泌体样本中,进行实时荧光定量PCR(qRT-PCR)验证,验证结果与测序结果一致。对差异表达的外泌体m.RNA进行靶基因预测及其go(Gene Ontology)和信号通路富集分析,发现靶基因聚集的生物学功能多数参与生物进展过程的调控。靶基因主要富集在Fox O、m.PK、Hippo信号通路以及HTLV-I感染等。结果显示,Am.患者与健康对照者的血浆外泌体m.RNA存在着差异性表达。差异性表达的m.RNA特异性很高,对进一步阐明Am.白血病发生与发展的分子机制、研发新的无创诊断方法、新的诊断标记物和有效治疗Am.的方法具有十分重要和深远的意义。

关键词：外泌体外泌体m.croRNA 急性髓系白血病 Solexa测序

Biom.chanical Studies on m.rine Erythroleukem.a Cell Line after p53 Gene Transfer

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Biomechanical Studies on Murine Erythroleukemia Cell Line af...