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Journal of Energy Chemistry 2024年第6期93卷 1-7,I0001页

作者： You Liu Lishuang Zheng Kuanxiang Zhang Kun Xu Weicheng Xie Jue Zhang yulu tian tianyuan Liu Hanzhong Xu Ruoming Ma Wei Huang Jiahui Chen Jusheng Bao Chen Chen Yongsheng Zhou Xuchun Wang Junming Chen Jungan Wang College of Chemistry and Materials Engineering Anhui Science and Technology UniversityBengbu 233000AnhuiChina Anhui Province Quartz Sand Purification and Photovoltaic Glass Engineering Research Center Chuzhou 233100AnhuiChina Triumph Photovoltaic Materials Co.Ltd BengbuAnhuiChina National Laboratory of Solid State Microstructures School of PhysicsNanjing UniversityNanjing 210009JiangsuChina JinkoSolar Holding Co.Ltd HainingZhejiangChina

Perovskite solar cells(PSCs)have emerged as a promising photovoltaic technology because of their high light absorption coefficient,long carrier diffusion distance,and tunable ***,PSCs face challenges such as hysteresis effects and stability *** this study,we introduced a novel approach to improve film crystallization by leveraging 4-tert-butylpyridine(TBP)molecules,thereby enhancing the performance and stability of *** findings demonstrate the effective removal of PbI_(2)from the perovskite surface through strong coordination with TBP ***,by carefully adjusting the concentration of the TBP solution,we achieved enhanced film crystallinity without disrupting the perovskite *** TBP-treated perovskite films exhibit a low defect density,improved crystallinity,and improved carrier *** a result,the PSCs manufactured with TBP treatment achieve power conversion efficiency(PCE)exceeding 24%.Moreover,we obtained the PCE of 21.39%for the 12.25 cm^(2)module.

关键词： 4-tert-butylpyridine Film crystallization Perovskite solar cells Power conversion efficiency Stability improvement

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常益长高速铁路本跨线列车开行模式设计

铁道运营技术 2024年第1期30卷 1-4页

作者：田宇璐湖南铁路科技职业技术学院湖南株洲412000

以常益长高速铁路为研究对象,为提升沿线旅客服务质量需对列车开行模式进行设计。针对沿线既有线列车存在的开行频率低、通达范围小、运行时间长等问题,提出常益长高速铁路适合采用本线及跨线列车结合的列车开行模式,采用多要素分析法,... 详细信息

以常益长高速铁路为研究对象,为提升沿线旅客服务质量需对列车开行模式进行设计。针对沿线既有线列车存在的开行频率低、通达范围小、运行时间长等问题,提出常益长高速铁路适合采用本线及跨线列车结合的列车开行模式,采用多要素分析法,对拟开行的本线及跨线列车起讫点、列车等级、列车编组、列车开行频率等要素进行设计,确保列车开行模式能够适应旅客出行需求,为列车开行方案和运行图的合理编制奠定基础。

关键词：常益长高速铁路本跨线列车开行模式

希夏邦马峰地区含绿柱石花岗伟晶岩的地球化学及年代学研究

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岩石学报 2024年第5期40卷 1548-1564页

作者：杨雷贺一凡王佳敏侯康师田雨露成都理工大学地球科学学院行星科学国际研究中心成都610059 南京大学内生金属矿床成矿机制研究国家重点实验室南京210023 中国科学院地质与地球物理研究所岩石圈演化国家重点实验室北京100029

喜马拉雅淡色花岗岩是印度和欧亚板块碰撞造山过程中的重要产物,在造山带演化和高原隆升的相关研究中受到高度关注。近年来的研究发现其经历过高度结晶分异且与超大型锂-铍-铷-铯等稀有金属矿床紧密相关。本文报道了与希夏邦马峰淡色花... 详细信息

喜马拉雅淡色花岗岩是印度和欧亚板块碰撞造山过程中的重要产物,在造山带演化和高原隆升的相关研究中受到高度关注。近年来的研究发现其经历过高度结晶分异且与超大型锂-铍-铷-铯等稀有金属矿床紧密相关。本文报道了与希夏邦马峰淡色花岗岩相关的含绿柱石伟晶岩的矿物学、地球化学和年代学资料。这些伟晶岩中的绿柱石普遍呈自形,多数被包裹在长石和石英等主要造岩矿物中,显示出岩浆结晶的特点。矿物化学显示绿柱石的元素变化以通道-八面体替代和通道-四面体替代为主。希夏邦马伟晶岩中绿柱石地球化学组成与铍成矿伟晶岩中绿柱石相当,相对喜马拉雅锂成矿伟晶岩中的绿柱石具有更低的Li_(2)O、Cs_(2)O和Na/Li比,显示出寄主岩石以铍矿化为主。这与全岩地球化学显示的伟晶岩高铍低锂的特点相一致。除此之外,伟晶岩中铷、铯、锡等稀有金属元素也发生了明显的富集。伟晶岩中稀有金属元素与Rb/Sr比之间的强正相关性表明它们的富集主要受控于分离结晶作用。独居石U-Th-Pb年代学分析表明这些伟晶岩主要形成于ca.18~17Ma,与希夏邦马淡色花岗岩岩体的年龄相一致。同时,伟晶岩中的独居石还记录了ca.25~23Ma和ca.21Ma两期年龄,代表了区域上其他两期淡色花岗岩岩浆事件。在喜马拉雅中部地区,普遍发育这三个阶段的淡色花岗岩岩浆事件以及稀有金属成矿作用,进一步表明了淡色花岗岩的形成与分异演化对伟晶岩成矿的贡献。

关键词：喜马拉雅希夏邦马淡色花岗岩绿柱石分离结晶稀有金属成矿

青钱柳发酵物对2型糖尿病合并肝损伤大鼠糖脂代谢及肠道菌群的调节作用

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食品与发酵工业 2024年第12期50卷 220-226页

作者：刘恭孝谢磊甄学静寇静张任强周书伊田雨露陕西中医药大学医学技术学院陕西咸阳712000

为探究发酵青钱柳防治2型糖尿病(type 2 diabetes mellitus,T2DM)合并肝损伤的作用机制,该实验用冠突散囊菌对青钱柳进行接种发酵,并以高脂高糖饲料持续喂养加链脲佐菌素注射的方式建立T2DM合并肝损伤大鼠模型,设置了正常组、模型组以... 详细信息

为探究发酵青钱柳防治2型糖尿病(type 2 diabetes mellitus,T2DM)合并肝损伤的作用机制,该实验用冠突散囊菌对青钱柳进行接种发酵,并以高脂高糖饲料持续喂养加链脲佐菌素注射的方式建立T2DM合并肝损伤大鼠模型,设置了正常组、模型组以及不同剂量组,并采用降糖药物二甲双胍作为阳性对照组,对比青钱柳发酵物在防治糖尿病合并肝损伤的效果。结果表明,青钱柳发酵物能显著降低T2DM合并肝损伤大鼠的空腹血糖和改善葡萄糖耐受,并能显著降低血清中总胆固醇、甘油三酯、低密度脂蛋白胆固醇、谷丙转氨酶及谷草转氨酶水平,缓解模型大鼠的肝脏损伤。同时研究发现,高剂量组能显著提高大鼠肠道菌群的多样性,上调厚壁菌门/拟杆菌门比值,维持肠道中菌群结构稳定;增加肠道中乳酸菌Lactobacillu s等益生菌的丰度,降低Escherichia-Shigella等致炎微生物的丰度。综上所述,青钱柳发酵物能有效改善T2DM合并肝损伤大鼠的糖脂代谢,促使肠道中有益菌的增生,缓解肠道微生物菌群失衡,巩固肠道的防御功能。

关键词：青钱柳发酵 2型糖尿病肝损伤肠道菌群

Acute and chronic toxic effects of Pb^(2+)on polychaete Perinereis aibuhitensis:Morphological changes and responses of the antioxidant system

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Journal of Environmental Sciences 2014年第8期26卷 1681-1688页

作者： yulu tian Hongjun Liu Qixiang Wang Jian Zhou Xuexi Tang College of Marine Life Sciences Ocean University of China Marine Biology Institute of Shangdong Province

Perinereis aibuhitensis was used to assess adverse biological effects caused by acute and chronic Pb2＋exposure in artificial seawater under controlled laboratory conditions. In 96-hr acute toxicity experiments,the morphological changes showed a positive time/dose-dependent tendency,and the 96-hr LC50 value of Pb2＋was 686.41 mg/L. The responses of enzymatic and non-enzymatic antioxidants in tissues including catalase（CAT）,peroxidase（POD）,superoxide dismutase（SOD）,glutathione peroxidase（GSH-PX）,malondialdehyde（MDA） and the content of total soluble protein（TSP）,were investigated on days 1,4,7 and 10 after Pb2＋exposure under chronic toxicity testing. Results showed that the activation of the antioxidant system in P. aibuhitensis depended on the Pb2＋concentration and the duration of exposure ***,POD and SOD activities were induced on the first day of the exposure and decreased to the control level on day 10 after exposure. Therefore,these two indexes could be used to indicate oxidative stress associated with P. aibuhitensis exposure to Pb2＋.

关键词： Perinereis aibuhitensis Toxicity Antioxidant system Pb2+

Robust Frequency Estimation Under Additive Symmetric α-Stable Gaussian Mixture Noise

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Intelligent Automation & Soft Computing 2023年第4期36卷 83-95页

作者： Peng Wang yulu tian Bolong Men Hailong Song Beijing Orient Institute of Measurement and Test Beijing10083China University of Science&Technology Beijing Beijing10083China

Here the estimating problem of a single sinusoidal signal in the additive symmetricα-stable Gaussian(ASαSG)noise is *** ASαSG noise here is expressed as the additive of a Gaussian noise and a symmetricα-stable distributed *** the probability density function(PDF)of the ASαSG is complicated,traditional estimators cannot provide optimum *** on the Metropolis-Hastings(M-H)sampling scheme,a robust frequency estimator is proposed for ASαSG ***,to accelerate the convergence rate of the developed algorithm,a new criterion of reconstructing the proposal covar-iance is derived,whose main idea is updating the proposal variance using several previous samples drawn in each *** approximation PDF of the ASαSG noise,which is referred to the weighted sum of a Voigt function and a Gaussian PDF,is also employed to reduce the computational *** computer simulations show that the performance of our method is better than the maximum likelihood and the lp-norm estimators.

关键词： Additive symmetricα-stable Gaussian mixture metropolis-hastings algorithm robust frequency estimation probability density function approximation

Assessment of gully erosion susceptibility using different DEM-derived topographic factors in the black soil region of Northeast China

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International Soil and Water Conservation Research 2023年第1期11卷 97-111页

作者： Donghao Huang Lin Su Lili Zhou yulu tian Haoming Fan College of Water Conservancy Shenyang Agricultural UniversityShenyang110866China College of Forestry Shenyang Agricultural UniversityShenyang110866China Key Laboratory of Soil Erosion Control and Ecological Restoration in Liaoning ProvinceShenyang110866China College of Urban and Environmental Sciences Northwest UniversityXi'an710127China

As a primary sediment source,gully erosion leads to severe land degradation and poses a threat to food and ecological ***,identification of susceptible areas is critical to the prevention and control of gully *** study aimed to identify areas prone to gully erosion using four machine learning methods with derived topographic *** topographic attributes(elevation,slope aspect,slope degree,catchment area,plan curvature,profile curvature,stream power index,and topo-graphic wetness index)were derived as feature variables controlling gully occurrence from digital elevation models with four different pixel sizes(5.0 m,12.5 m,20.0 m,and 30.0 m).A gully inventory map of a small agricultural catchment in Heilongjiang,China,was prepared through a combination of field surveys and satellite *** topographic attribute dataset was randomly divided into two portions of 70%and 30%for calibrating and validating four machine learning methods,namely random forest(RF),support vector machines(SVM),artificial neural network(ANN),and generalized linear models(GLM).Accuracy(ACC),area under the receiver operating characteristic curve(AUC),root mean square error(RMSE),and mean absolute error(MAE)were calculated to assess the performance of the four machine learning methods in predicting spatial distribution of gully erosion susceptibility(GES).The results suggested that the selected topographic attributes were capable of predicting GES in the study catchment area.A pixel size of 20.0 m was optimal for all four machine learning *** RF method described the spatial relationship between the feature variables and gully occurrence with the greatest accuracy,as it returned the highest values of ACC(0.917)and AUC(0.905)at a 20.0 m *** RF was also the least sensitive to resolutions,followed by SVM(ACC=0.781-0.891,AUC=0.724-0.861)and ANN(ACC=0.744-0.808,AUC=0.649-0.847).GLM performed poorly in this study(ACC=0.693-0.757,AUC=0.608-0.703).Ba

关键词： Gully erosion Machine learningmethods Topographicattribute Pixel size Northeast China

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石油企业油气操作成本的确定方法及应用研究

现代工业经济和信息化 2024年第7期14卷 187-189,194页

作者：胡燕高安琪田雨露中国石化石油勘探开发研究院北京100083

以评价石油企业大量勘探开发项目经济效益为目标,研究了经济评价中的重要参数——操作成本。以往直接根据吨油操作成本历史趋势采用经验法取值,对于参数不详尽的区块不细分成本构成,取值方法粗犷、不够精细,针对这一问题,从可变成本和... 详细信息

以评价石油企业大量勘探开发项目经济效益为目标,研究了经济评价中的重要参数——操作成本。以往直接根据吨油操作成本历史趋势采用经验法取值,对于参数不详尽的区块不细分成本构成,取值方法粗犷、不够精细,针对这一问题,从可变成本和固定成本的构成出发,探讨一种确定操作成本的方法,并以某地区断块油藏单口井作为典型案例进行测算。

关键词：操作成本石油企业方法

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Robust Frequency Estimation Under Additive Mixture Noise

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Computers, Materials & Continua 2022年第7期72卷 1671-1684页

作者： Yuan Chen yulu tian Dingfan Zhang Longting Huang Jingxin Xu School of Computer and Communication Engineering University of Science&Technology BeijingBeijing100083China School of Automation Science and Electrical Engineering Beihang UniversityBeijing100191China School of Information Engineering Wuhan University of TechnologyWuhan430070China Department of Energy and Public Works Queensland4702Australia

In many applications such as multiuser radar communications and astrophysical imaging processing,the encountered noise is usually described by the finite sum ofα-stable(1≤α<2)*** this paper,a new parameter estimator is developed,in the presence of this new heavy-tailed *** the closed-formPDF of theα-stable variable does not exist exceptα=1 andα=2,we take the sum of the Cauchy(α=1)and Gaussian(α=2)noise as an example,namely,additive Cauchy-Gaussian(ACG)*** probability density function(PDF)of the mixed random variable,can be calculated by the convolution of the Cauchy’s PDF and Gaussian’s *** of the complicated integral in the PDF expression of the ACG noise,traditional estimators,e.g.,maximum likelihood,are analytically not *** obtain the optimal estimates,a new robust frequency estimator is devised by employing the Metropolis-Hastings(M-H)***,to guarantee the fast convergence of the M-H chain,a new proposal covariance criterion is also devised,where the batch of previous samples are utilized to iteratively update the proposal covariance in each sampling *** simulations are carried out to indicate the superiority of the developed scheme,when compared with several conventional estimators and the Cramér-Rao lower bound.

关键词： Frequency estimation additive cauchy-gaussian noise voigt profile metropolis-hastings algorithm cramér-rao lower bound

Cenozoic potassic volcanic rocks from the Keluo and Wudalianchi volcanic districts,northeast China:origin from the new sub-continental lithospheric mantle(SCLM)metasomatized by potassium-rich fluids from delaminated lower crust

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Frontiers of Earth Science 2022年第4期16卷 989-1004页

作者： Fanchao MENG yulu tian Yaoqi ZHOU Jiaqi LIU Gengchao ZUO Qing DU School of Geosciences China University of Petroleum(East China)Qingdao 266580China Pilot National Laboratory for Marine Science and Technology(Qingdao) Qingdao 266061China Shandong Provincial Key Laboratory of Deep Oil and Gas China University of Petroleum(East China)Qingdao 266580China Institute of Geology Chinese Academy of Geological SciencesBeijing 100037China

A series of Cenozoic potassium-rich volcanic rocks developed in the Xiaoguli-Keluo-Wudalianchi-Erkeshan districts,northeast *** source region and potassium-rich mechanism of the potassic rocks remain highly *** this paper,the major elements,trace elements,and Sr-Nd-Pb isotopes of the volcanic rocks in Keluo(KL)and Wudalianchi(WDLC)volcanic districts were analyzed *** results show that the volcanic rocks are characterized by high K2O(4.36wt.%-6.13wt.%),remarkable enrichment in LREEs and LILEs,as well as the strong fractionation of *** isotopic characteristics with high 87Sr/86Sr(0.704990-0.705272),low 143Nd/144Nd(0.512306-0.512417),low 206Pb/204Pb(16.546-17.135)and 207Pb/204Pb(15.002-15.783)of the volcanic rocks suggest the involvement of EM-I-type *** the basis of the geochemical characteristics,the potassium-rich volcanic magma originated from the new SCLM forming after delamination of the ancient SCLM,with metasomatism of the potassium-rich fluids released from the ancient lower crust during the Late *** proposed genetic model assumes the source which represented by a phlogopite-bearing garnet peridotite(with modal garnet in the range of 2%-10%)experienced very low degrees(i.e.,~0.5)of partial *** Cenozoic,the lithosphere in northeast China was affected by the extension and decompression of continental rift,and the metasomatized SCLM underwent low degree partial melting,resulting in the formation of potassium-rich primitive basaltic magma.

关键词： northeast China Keluo-Wudalianchi volcanic districts Cenozoic potassic volcanic rocks petrogenesis sub-continental lithospheric mantle