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基于灰色关联分析模拟月壤抗压强度性能试验

吉林大学学报（工学版） 2024年第7期54卷 2015-2025页

作者：汪恩良任志凤王储刘君巍刘兴超田野邹猛卢孜筱张伟伟姜生元东北农业大学水利与土木工程学院哈尔滨150030 星壤水冰分析测试联合实验室哈尔滨150030 中国空间技术研究院北京空间飞行器总体设计部北京100094 哈尔滨工业大学宇航空间机构及控制研究中心哈尔滨150001 哈尔滨商业大学轻工学院哈尔滨150028 吉林大学工程仿生教育部重点实验室长春130022 国家纳米科学中心北京100190

在月球南极永久阴影区内探测水冰物质是我国嫦娥七号的重要任务,为此在地球环境下开展模拟研究,制备极区含水模拟月壤测试样本,并对其月壤模拟物进行超低温条件下的力学特性测试,分析含水率、相对密实度、温度、加载速率及基材配比与抗... 详细信息

在月球南极永久阴影区内探测水冰物质是我国嫦娥七号的重要任务,为此在地球环境下开展模拟研究,制备极区含水模拟月壤测试样本,并对其月壤模拟物进行超低温条件下的力学特性测试,分析含水率、相对密实度、温度、加载速率及基材配比与抗压强度变化规律。结果明:冻结月壤模拟物的抗压强度随着含水率的增加而增大,随着密实度的增加而增大,随温度降低而增大,受加载速率变化的影响较小,受不同基材配比影响的抗压强度排序为:100%斜长岩密实度>温度>配比>加载速率。本文进行了含水月壤制备及力学特性测试,提出了更加系统规范的实施方案,作为极区含水月壤特性的研究基础,为后续月壤模拟研究提供了理论依据及参考。

关键词：地面力学含水月壤模拟物抗压强度灰色关联理论关联度

Giant nonlinear Hall effect in twisted bilayer WSe2

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National Science Review 2023年第4期10卷 97-104页

作者： Meizhen Huang Zefei Wu Jinxin Hu Xiangbin Cai en Li Liheng An Xuemeng Feng Ziqing ye Nian Lin Kam Tuen Law Ning Wang Department of Physics and Center for Quantum Materials The Hong Kong University of Science and Technology William Mong Institute of Nano Science and Technology The Hong Kong University of Science and Technology

The recently discovered nonlinear Hall effect(NHe) in a few non-interacting systems provides a novel mechanism for generating second-harmonic electrical Hall signals under time-reversal-symmetric conditions. Here, we introduce a new approach to engineering an NHe by using twisted moiré *** found that the twisted WSe2bilayer exhibited an NHe when the Fermi level was tuned to the moiré flat bands. When the first moiré band was half-filled, the nonlinear Hall signal exhibited a sharp peak with a generation efficiency that was at least two orders of magnitude greater than those obtained in previous experiments. We discuss the possible origins of the diverging generation efficiency in twisted WSe2based on resistivity measurements, such as moiré-interface-induced correlation effects and mass-diverging-type continuous Mot transition. This study demonstrates not only how interaction effects can combine with Berry curvature dipoles to produce novel quantum phenomena, but also the potential of NHe measurements as a new tool for studying quantum criticality.

关键词： nonlinear Hall effect moiré superlattice twisted bilayer WSe2 continuous Mott transition electron-electron correlation effect

Probing the Progenitor of High-z Short-duration GRB 201221D and its Possible Bulk Acceleration in Prompt emission

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Research in Astronomy and Astrophysics 2022年第7期22卷 176-190页

作者： Hao-Yu Yuan Hou-Jun Lü ye Li Bin-Bin Zhang Hui Sun Jared Rice Jun Yang en-Wei Liang Guangxi Key Laboratory for Relativistic Astrophysics Department of PhysicsGuangxi UniversityNanning 530004China Purple Mountain Observatory Chinese Academy of SciencesNanjing 210008China Key Laboratory of Modern Astronomy and Astrophysics(Nanjing University) Ministry of EducationNanjing 210093China Key Laboratory of Space Astronomy and Technology National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100101China Department of Mathematics and Physical Science Southwestern Adventist UniversityKeeneTX 76059USA

The growing observed evidence shows that the long-and short-duration gamma-ray bursts(GRBs) originate from massive star core-collapse and the merger of compact stars,*** 201221 D is a short-duration GRB lasting~0.1 s without extended emission at high redshift z=*** analyzing data observed with the Swift/BAT and Fermi/GBM,we find that a cutoff power-law model can adequately fit the spectrum with a soft e=113keV,and isotropic energy e=1.36× *** order to reveal the possible physical origin of GRB 201221 D,we adopted multi-wavelength criteria(e.g.,Amati relation,ε-parameter,amplitude parameter,local event rate density,luminosity function,and properties of the host galaxy),and find that most of the observations of GRB 201221 D favor a compact star merger ***,we find that α is larger than 2+βin the prompt emission phase which suggests that the emission region is possibly undergoing acceleration during the prompt emission phase with a Poynting-flux-dominated jet.

关键词： (stars:)gamma-ray burst:individual(GRB 201221D) stars:massive acceleration of particles

青海东昆仑八宝山盆地高原含气泥页岩储层关键参数评价

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长江大学学报（自然科学版） 2024年第1期21卷 38-48页

作者：佘刚叶志红张程恩李兴文袁莎莎王少卿中国石油集团测井有限公司长庆分公司陕西西安710200 中国石油集团测井有限公司吐哈分公司新疆鄯善838200 中国石油集团测井有限公司青海分公司甘肃敦煌736200 中国石油集团测井有限公司华北分公司河北任丘062552

青海东昆仑八宝山盆地三叠系八宝山组为一套高原陆相碎屑岩及火山岩沉积,目前对于高原陆相泥页岩缺少有效的测井评价方法。参考传统页岩气评价思路,挖掘研究区重点井常规及成像测井响应特征与岩心实验数据的关系,对储层关键参数进行评价... 详细信息

青海东昆仑八宝山盆地三叠系八宝山组为一套高原陆相碎屑岩及火山岩沉积,目前对于高原陆相泥页岩缺少有效的测井评价方法。参考传统页岩气评价思路,挖掘研究区重点井常规及成像测井响应特征与岩心实验数据的关系,对储层关键参数进行评价:(1)基于常规测井曲线,利用相关性分析优选9个岩性敏感因子,通过最优化算法求取6种主要矿物含量;(2)利用基于常规曲线的多元线性回归、电阻率-声波时差重叠、体积模型、铀含量计算等多方法进行总有机碳含量(w(TOC))计算及方法优选;(3)基于矿物体积模型进行变骨架的基质孔隙度计算、利用微电成像进行裂缝拾取及裂缝参数评价、利用PoroTex图像处理技术刻画溶蚀孔缝发育程度、基于阵列声波波场分离技术进行斯通利波界面反射、幅度衰减计算及渗透率反演;(4)岩心实验刻度测井,优选关键地质参数,构建吸附气、游离气及总含气量计算模型;(5)基于阵列声波岩石力学静态转换参数及矿物体积模型,优选适宜研究区的岩石脆性及可压裂性评价方法。结果表明,基于测井的储层关键参数多方法优选结果取得了较高的精度,建立的研究区储层品质评价标准解决了八宝山盆地高原含气泥页岩储层评价的难题,取得了较好的应用效果。

关键词：东昆仑八宝山盆地含气泥页岩储层评价

Inhibition of ammonia-oxidizing bacteria promotes the growth of ammonia-oxidizing archaea in ammonium-rich alkaline soils

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Pedosphere 2022年第4期32卷 532-542页

作者： Chang YIN Xiaoping FAN Hao CHen Mujun ye Guochao YAN Tingqiang LI Hongyun PenG Shengzhe e Zongxian CHe Steven AWAKeLIN Yongchao LIANG Key Laboratory of environment Remediation and ecological Health Ministry of EducationCollege of Environmental&Resource SciencesZhejiang UniversityHangzhou 310058China Institute of Soil and Fertilizer and Water-Saving Agriculture Gansu Academy of Agricultural SciencesLanzhou 730070China Scion Research P.O.Box 29237Christchurch 8011New Zealand

Disparities in the substrate affinity and tolerance threshold for ammonia have been believed to play a key role in driving niche differentiation between ammonia-oxidizing archaea (AOA) and bacteria (AOB);however, recent surveys argue that direct competition between AOA and AOB is also important in this phenomenon. Accordingly, it is reasonable to predict that diverse AOA lineages would grow in ammonium (NH_(4)^(+))-rich alkaline arable soils if AOB growth is suppressed. To test this hypothesis, a microcosm study was established using three different types of alkaline arable soils, in which a high NH_(4)^(+) concentration (200 μg N g^(-1) dry soil) was maintained by routinely replenishing urea and the activities of AOB were selectively inhibited by 1-octyne or 3,4-dimethylpyrazole phosphate (DMPP). Compared with amendment with urea alone, 1-octyne partially retarded AOB growth, while DMPP completely inhibited AOB. Both inhibitors accelerated the growth of AOA, with significantly higher ratios of abundance of AOA to AOB observed with DMPP amendment across soils. Nonmetric multidimensional scaling analysis (NMDS) indicated that different treatments significantly altered the community structures of both AOA and AOB and AOA OTUs enriched by high-NH_(4)^(+) amendment were taxonomically constrained across the soils tested and closely related to Nitrososphaera viennensis en76 and N. garnensis. Given that these representative strains have been demonstrated to be sensitive to high ammonia concentrations, our results suggest that it is the competitiveness for ammonia, rather than disparities in substrate affinity and tolerance threshold for ammonia, that drives niche differentiation between these phylotypes and AOB in NH_(4)^(+)-rich alkaline soils.

关键词： community structure 3,4-dimethylpyrazole phosphate niche differentiation 1-octyne substrate affinity tolerance threshold

瓦尼桑黄固体发酵产物的化学成分及其生物活性研究

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天然产物研究与开发 2024年第4期36卷 607-615页

作者：吴椰高鹤萍毛燕妍黄明慧徐帮邹坤刘呈雄汪蕾三峡大学生物与制药学院天然产物研究与利用湖北省重点实验室(中国轻工业功能酵母重点实验室) 三峡大学第一临床医学院宜昌443002

对瓦尼桑黄(Sanghuangporus vaninii)固体发酵产物的化学成分及生物活性进行研究。采用超声提取、柱层析以及半制备高效液相色谱等方法分离纯化,通过波谱数据鉴定了化合物的结构,并对所得单体化合物进行体外抗氧化活性、α-葡萄糖苷酶... 详细信息

对瓦尼桑黄(Sanghuangporus vaninii)固体发酵产物的化学成分及生物活性进行研究。采用超声提取、柱层析以及半制备高效液相色谱等方法分离纯化,通过波谱数据鉴定了化合物的结构,并对所得单体化合物进行体外抗氧化活性、α-葡萄糖苷酶和黄嘌呤氧化酶抑制活性筛选。从瓦尼桑黄固体发酵产物中分离得到17个化合物,分别为(2Z,4e)-γ-ionylideneacetic acid(1)、phellinulin e(2)、phellinulin F(3)、phellinulin G(4)、phellinulin J(5)、phellinulin L(6)、phellinulin M(7)、phellinulin N(8)、elgonenes D(9)、咖啡酸(10)、hispidin(11)、3-hydroxyhispidin(12)、原儿茶酸(13)、4-(3-ethoxy-4-hydroxyphenyl)but-3-en-2-one(14)、丁子香酚(15)、亚油酸甲酯(16)、硬脂酸(17),其中化合物1~9为首次从瓦尼桑黄中分离得到。活性测试结果显示化合物10~13表现出良好的抗氧化活性,对DPPH自由基的半数抑制浓度(IC_(50))分别为16.45、37.52、82.71、50.46μg/mL,对ABTS自由基的IC_(50)值分别为1.43、2.26、34.55、21.60μg/mL,对羟基自由基的IC_(50)值分别为38.43、49.46、86.74、69.16μg/mL。化合物10、11还对黄嘌呤氧化酶表现出良好的抑制作用,IC_(50)值分别为28.73和44.80μg/mL。化合物17具有一定的α-葡萄糖苷酶抑制活性,其IC_(50)值2.31μg/mL。

关键词：瓦尼桑黄化学成分体外抗氧化活性 α-葡萄糖苷酶黄嘌呤氧化酶

A Real-time Monitoring System Based on ZigBee and 4G Communications for Photovoltaic Generation

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CSee Journal of Power and energy Systems 2020年第1期6卷 52-63页

作者： Kun Xia Jiawen Ni Yanhong ye Po Xu Yiming Wang University of Shanghai for Science and Technology Shanghai 200093China Ningbo Ginlong New energy Tech Corporation Zhejiang 315712China

A novel real-time monitoring system for photovoltaic(PV)generation is presented in this *** of Things(IoT)integrated with cloud servers and terminal applications allow the remote monitoring of centralized or distributed pho-tovoltaic *** proposed system could realize the net-working communication of multiple nodes based on ZigBee,and upload the operational data to the cloud server via a 4G communications ***,the server selects three-phase current as the sample sets from the uploaded data to set up a composite current characteristic combining wavelet packet en-ergy with waveform parameter,and establishes a fault diagnosis model based on the probabilistic neural network to analyze the health status of the PV inverter *** method requires little sampling frequency without an extra signal and saves the cost of local devices by placing online diagnostics on the *** addition,the user could query and store the running information of the PV systems through the personal computer-side web or mobile phone with remote *** article presents the hardware design of ZigBee and the 4G module,and composition of the diagnosis model for open circuit failure of the PV inverter through the cloud server,building the user software at the application *** final experimental results show that the proposed system has better communication performance and higher diagnostic accuracy in real-time monitoring.

关键词： Data visualization fault diagnosis IoT network photovoltaic system wireless remote monitoring

Debaryomyces hansenii supplementation in low fish meal diets promotes growth,modulates microbiota and enhances intestinal condition in juvenile marine fish

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Journal of Animal Science and Biotechnology 2024年第1期15卷 253-276页

作者： Ignasi Sanahuja Alberto Ruiz Joana P.Firmino Felipe e.Reyes-López Juan B.Ortiz-Delgado eva Vallejos-Vidal Lluis Tort Dariel Tovar-Ramírez Isabel M.Cerezo Miguel A.Moriñigo Carmen Sarasquete enric Gisbert Aquaculture Program Institute of Agrifood Research and Technology(IRTA)La Rapita 43540Spain Centro de Biotecnologia Acuicola Universidad de Santiago de ChileSantiagoChile Instituto de Ciencias Marinas de Andalucia(ICMAN-CSIC) Avda.Republica Saharaui no 2Campus Universitario Rio San PedroPuerto RealCadiz 11510Spain Nucleo de Investigaciones Aplicadas en Ciencias Veterinarias y Agronomicas Facultad de Medicina Veterinaria y AgronomiaUniversidad de Las AmericasSantiagoChile Department of Cell Biology Physiologyand ImmunologyUniversitat Autonoma de BarcelonaBarcelonaSpain Centro de Investigaciones Biologicas del Noroeste SC CIBNORLa PazMexico Department of Microbiology Instituto de Biotecnologia Y Desarrollo Azul(IBYDA)Faculty of SciencesUniversity of Malaga29010 MalagaSpain SCBI Bioinformatic UnitUniversity of Malaga29590 MalagaSpain

Background The development of a sustainable business model with social acceptance,makes necessary to develop new strategies to guarantee the growth,health,and well-being of farmed *** hansenii is a yeast species that can be used as a probiotic in aquaculture due to its capacity to i)promote cell proliferation and differen-tiation,ii)have immunostimulatory effects,iii)modulate gut microbiota,and/or iv)enhance the digestive *** provide inside into the effects of *** on juveniles of gilthead seabream(Sparus aurata)condition,we inte-grated the evaluation of the main key performance indicators coupled with the integrative analysis of the intestine condition,through histological and microbiota state,and its transcriptomic *** After 70 days of a nutritional trial in which a diet with low levels of fishmeal(7%)was supplemented with 1.1%of ***(17.2×10^(5) CFU),an increase of ca.12%in somatic growth was observed together with an improve-ment in feed conversion in fish fed a yeast-supplemented *** terms of intestinal condition,this probiotic modu-lated gut microbiota without affecting the intestine cell organization,whereas an increase in the staining intensity of mucins rich in carboxylated and weakly sulphated glycoconjugates coupled with changes in the affinity for certain lectins were noted in goblet *** in microbiota were characterized by the reduction in abundance of several groups of Proteobacteria,especially those characterized as opportunistic *** microarrays-based transcrip-tomic analysis found 232 differential expressed genes in the anterior-mid intestine of ***,that were mostly related to metabolic,antioxidant,immune,and symbiotic *** Dietary administration of *** enhanced somatic growth and improved feed efficiency param-eters,results that were coupled to an improvement of intestinal condition as histochemical and transcriptomic tools *** probiotic ye

关键词： Debaryomyces hansenii Intestine condition Low fish meal diet Microbiota Transcriptomics yeast probiotic

IDH1基因在肝内胆管癌细胞HuCCT1增殖与迁移中的作用及其初步机制

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解放军医学杂志 2024年第2期49卷 194-203页

作者：林美佳雷宇清叶洲杰朱丽萍王心睿黄雄飞福建医科大学基础医学院病理学系福建福州350004 国家卫健委非人灵长类生育调节技术评价重点实验室/福建省妇幼保健院福建福州350000 福建医科大学妇儿临床医学院福建福州350004 福建省儿童医院心脏外科福建福州350011 福建省妇幼保健院福建福州350001 福建省儿童医院福建福州350011 福建医科大学附属医院福建省妇幼保健院医学研究中心福建福州350001 福建医科大学消化道恶性肿瘤教育部重点实验室福建福州350108

目的探讨异柠檬酸脱氢酶1(IDH1)在肝内胆管癌(iCCA)细胞HuCCT1增殖与迁移中的作用及其可能的分子机制。方法采用CRISPR/Cas9基因编辑技术构建IDH1基因敲除的HuCCT1细胞(HuCCT1^(IDH1-/-));CCK-8法和克隆形成实验检测IDH1野生型HuCCT1(Hu... 详细信息

目的探讨异柠檬酸脱氢酶1(IDH1)在肝内胆管癌(iCCA)细胞HuCCT1增殖与迁移中的作用及其可能的分子机制。方法采用CRISPR/Cas9基因编辑技术构建IDH1基因敲除的HuCCT1细胞(HuCCT1^(IDH1-/-));CCK-8法和克隆形成实验检测IDH1野生型HuCCT1(HuCCT1^(WT))细胞和HuCCT1^(IDH1-/-)细胞的增殖能力;细胞划痕和Transwell实验检测细胞的迁移和侵袭能力;Western blotting检测细胞上皮间质转化(eMT)相关蛋白e-钙黏蛋白(e-cadherin)、N-钙黏蛋白(N-cadherin)、波形蛋白(Vimentin)、基质金属蛋白酶-9(MMP-9)、Wnt3a、β-连环蛋白(β-catenin)的表达水平。生物信息学方法分析上述两种HuCCT1细胞的转录组测序结果,Western blotting验证转录组信息通路相关蛋白的表达。结果与HuCCT1细胞比较,HuCCT1^(IDH1-/-)细胞增殖和克隆形成数目明显减少(Pentin、MMP-9和调控G_(2)/M期增殖相关基因Cyclin A2、Cyclin B1及CDK1 mRNA表达水平降低(Pe-cadherin的CDH1 mRNA表达水平升高(Pestern blotting检测结果显示,HuCCT1^(IDH1-/-)细胞中e-cadherin表达水平升高(Perin、Vimentin及MMP-9蛋白表达水平降低(PeGs);基因本体论(GO)分析显示上述DeGs显著富集在炎症反应、细胞信号转导和细胞代谢等生物学过程;KeGG通路分析显示上述DeGs显著富集在Wnt、MAPK、Rap1、Hippo、TNF等与肿瘤细胞增殖和侵袭转移密切相关的信号通路。Western blotting验证结果显示,与HuCCT1^(WT)比较,HuCCT1^(IDH1-/-)细胞Wnt信号通路的Wnt3a和β-catenin蛋白表达水平降低(PeMT过程,其机制可能与激活Wnt/β-catenin信号通路有关。

关键词：肝内胆管癌异柠檬酸脱氢酶1 细胞迁移细胞侵袭转录组