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Variation Characteristics of Root Traits of Different Alfalfa Cultivars under Saline-Alkaline Stress and their Relationship with Soil Environmental Factors

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Phyton-International Journal of Experimental Botany 2024年第1期93卷 29-43页

作者： Tian-Jiao Wei Guang Li yan-ru cui Jiao Xie Xing-Ai Gao Xing Teng Xin-Ying Zhao Fa-Chun Guan Zheng-Wei Liang Northeast Agricultural Research Center of China Jilin Academy of Agricultural SciencesChangchun130033China Northeast Institute of Geography and Agroecology Chinese Academy of SciencesChangchun130102China

Soil salinization is the main factor that threatens the growth and development of plants and limits the increase of *** is of great significance to study the key soil environmental factors affecting plant root traits to reveal the adaptation strategies of plants to saline-alkaline-stressed soil *** this study,the root biomass,root morphological parameters and root mineral nutrient content of two alfalfa cultivars with different sensitivities to alkaline stress were analyzed with black soil as the control group and the mixed saline-alkaline soil with a ratio of 7:3 between black soil and saline-alkaline soil as the saline-alkaline treatment *** the same time,the correlation analysis of soil salinity indexes,soil nutrient indexes and the activities of key enzymes involved in soil carbon,nitrogen and phosphorus cycles was carried *** results showed that compared with the control group,the pH,EC,and urease(URE)of the soil surrounding the roots of two alfalfa cultivars were significantly increased,while soil total nitrogen(TN),total phosphorus(TP),organic carbon(SOC),andα-glucosidase activity(AGC)were significantly decreased under saline-alkaline *** was no significant difference in root biomass and root morphological parameters of saline-alkaline tolerant cultivar GN under saline-alkaline *** number of root tips(RT),root surface area(RS)and root volume(RV)of AG were reduced by 61.16%,44.54%,and 45.31%,respectively,compared with control *** ratios of K^(+)/Na^(+),Ca^(2+)/Na^(+)and Mg^(2+)/Na^(+)of GN were significantly higher than those of AG(p<0.05).The root fresh weight(RFW)and dry weight(RDW),root length(RL),RV and RT of alfalfa were positively regulated by soil SOC and TN,but negatively regulated by soil pH,EC,and URE(p<0.01).Root Ca^(2+)/Na+ratio was significantly positively correlated with soil TN,TP and SOC(p<0.01).The absorption of Mg and Ca ions in roots is significantly negatively regulated by soilβ-glucosidase ac

关键词： Saline-alkaline stress alfalfa root traits soil environmental factors correlation analysis

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DEFB126 polymorphisms and association with idiopathic asthenozoospermia in China

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Asian Journal of Andrology 2022年第6期24卷 607-614页

作者： Jiao-Yu He Jian-Ying Peng Qiu-Fu Li Xiao-Li Lin yan-ru cui Shi-Yu Ma Shi-Yun Fan Yi-Ran Liu Zhi-Lin Song Jun-Hang Deng Xia Wei Xian-Ping Ding Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education College of Life SciencesSichuan UniversityChengdu 610065China Chongqing Nanchuan Biotechnology Research Institute Bio-resource Research and Utilization Joint Key Laboratory of Sichuan and ChongqingChongqing 400000China

Idiopathic asthenozoospermia,a common factor in male infertility,is characterized by altered sperm motility function in fresh *** theβ-defensin 126(DEFB126)protein is associated with asthenozoospermia,DEFB126 gene polymorphisms have not been extensively ***,the association between DEFB126 gene polymorphisms and asthenozoospermia requires further *** was performed by semen analysis,karyotype analysis,and Y microdeletion detection,and 102 fertile men and 106 men with asthenozoospermia in Chengdu,China,were selected for DEFB126 gene sequence *** nucleotide mutations and two nucleotide deletions in the DEFB126 gene were ***11467417(317-318 del/del),rs11467497(163-166 wt/del),c.152T>C,and c.227A>G were significantly different between the control and asthenozoospermia groups,likely representing high-risk genetic factors for asthenozoospermia among ***126 expression was not observed in sperm with rs11467497 homozygous deletion and was unstable in sperm with rs11467417 homozygous *** rs11467497 four-nucleotide deletion leads to truncation of DEFB126 at the carboxy-terminus,and the rs11467417 binucleotide deletion produces a non-stop messenger RNA(mRNA).The above deletions may be responsible for male hypofertility and infertility by reducing DEFB126 affinity to sperm *** on in silico analysis,the amino acids 51M and 76K are located in the highly conserved domain;c.152T>C(M51T)and c.227A>G(K76R)are predicted to be damaging and capable of changing alternative splice,structural and posttranslational modification sites of the RNA,as well as the secondary structure,structural stability,and hydrophobicity of the protein,suggesting that these mutations are associated with asthenozoospermia.

关键词： β-defensin 126 idiopathic asthenozoospermia in silico analysis single-nucleotide polymorphisms

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血清免疫球蛋白E水平与梅尼埃病前庭功能的相关性研究

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中国现代医学杂志 2022年第17期32卷 21-26页

作者：崔彦儒郑艳秋高伟内蒙古医科大学附属医院耳鼻咽喉头颈外科内蒙古自治区呼和浩特010059

目的探讨血清免疫球蛋白E水平与梅尼埃病前庭功能的相关性。方法选取2018年1月—2021年1月内蒙古医科大学附属医院收治的梅尼埃病患者52例作为研究组,同期该院30例体检健康的志愿者作为对照组。比较两组研究对象的临床资料、血清免疫球... 详细信息

目的探讨血清免疫球蛋白E水平与梅尼埃病前庭功能的相关性。方法选取2018年1月—2021年1月内蒙古医科大学附属医院收治的梅尼埃病患者52例作为研究组,同期该院30例体检健康的志愿者作为对照组。比较两组研究对象的临床资料、血清免疫球蛋白E[总免疫球蛋白E(TIgE)、特异性免疫球蛋白E(SIgE)]水平、前庭功能[前庭功能减数值、语音声级、听性脑干反映(ABR)Ⅰ~Ⅴ波间歇期、眼肌前庭诱发肌源性电位(oVEMP)、颈肌前庭诱发肌源性电位(cVEMP)]。比较不同临床分期梅尼埃病患者血清免疫蛋白E水平和前庭功能指标的差异。分析梅尼埃病患者血清免疫蛋白E水平与前庭功能的相关性。绘制受试者工作特征(ROC)曲线,以ROC曲线下面积(AUC)评估血清免疫球蛋白E水平对梅尼埃病患者听力异常严重程度的预测价值。结果研究组血清TIgE、SIgE水平高于对照组(P<0.05);研究组前庭功能减数值、语音声级、ABRⅠ~Ⅴ波间歇期、oVEMP及cVEMP电位值高于对照组(P<0.05)。临床分期Ⅳ期的梅尼埃病患者的血清TIgE和SIgE水平、前庭功能减数值、语音声级、ABRⅠ~Ⅴ波间歇期、oVEMP和cVEMP电位值高于Ⅰ期、Ⅱ期、Ⅲ期患者(P<0.05),Ⅲ期高于Ⅰ期、Ⅱ期(P<0.05),Ⅱ期高于Ⅰ期(P<0.05)。Pearson相关性分析结果显示,梅尼埃病患者TIgE水平与语音声级呈正相关(r=0.583,P=0.007),SIgE水平与前庭功能减数值、语音声级、ABRⅠ~Ⅴ波间歇期、oVEMP电位值、cVEMP电位值呈正相关(r=0.643、0.796、0.589、0.538和0.608,P=0.000、0.000、0.008、0.005和0.002);血清TIgE、SIgE及两者联合预测MD患者听力异常严重程度的敏感性分别为64.29%(95%CI:0.441,0.807)、75.00%(95%CI:0.548,0.886)、64.29%(95%CI:0.441,0.807),特异性分别为75.00%(95%CI:0.530,0.894)、70.83%(95%CI:0.488,0.866)、95.83%(95%CI:0.769,0.998),AUC分别为0.681(95%CI:0.537,0.803)、0.789(95%CI:0.653,0.890)、0.864(95%CI:0.739,0.947)。结论MD患者血清免疫球蛋白E水平与梅尼埃病患者前庭功能相关,且血清TIgE、SIgE两者联合对梅尼埃病患者听力异常严重程度的预测价值较高。

关键词：梅尼埃病血清免疫球蛋白E 前庭功能减数值语音声级听性脑干反应前庭诱发肌源性电位

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海南岛周边浅海砂矿资源潜力浅析

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海洋通报 2017年第4期36卷 458-467页

作者：潘燕俊崔汝勇林明坤陈飞胡邦琦海南省海洋地质调查研究院海南海口570206 青岛海洋地质研究所山东青岛266071 海南省九三四地质大队海南海口570206

海南岛拥有全国最为丰富的滨海锆钛砂矿资源,然而,随着长期大规模矿产的开发,陆域滨海砂矿资源已日渐枯竭。海南岛四面环海,海岸线漫长,多为砂质海岸,沙滩宽广,特别有利于海洋砂矿的形成。本文总结了近年来海南岛周边浅海砂矿资源勘查... 详细信息

海南岛拥有全国最为丰富的滨海锆钛砂矿资源,然而,随着长期大规模矿产的开发,陆域滨海砂矿资源已日渐枯竭。海南岛四面环海,海岸线漫长,多为砂质海岸,沙滩宽广,特别有利于海洋砂矿的形成。本文总结了近年来海南岛周边浅海砂矿资源勘查现状和勘查成果,分析了区内砂矿的地质特征,从物源、气候与水动力条件、海岸类型与地貌类型、第四纪沉积作用和海平面变化等5个方面综合分析砂矿的成矿条件,阐述了浅海砂矿的成矿控制因素。在此基础上,结合历史调查资料,从成矿的有利因素进行系统分析,认为万宁市东澳南后海至田头港一带、东方感城至乐东莺歌海一带、文昌铺前湾至景心角一带和临高马袅至东英一带等4个浅海区具有较好的砂矿资源潜力,它们可作为今后该区砂矿勘查的重要靶区。

关键词：海南岛浅海砂矿资源潜力

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Lipid levels and insulin resistance markers in patients with colorectal cancer:Propensity score matching analysis

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World Journal of Gastrointestinal Oncology 2025年第1期17卷 130-142页

作者： Ren-Hao Hu Dong-Yi yan Ke-Hui Zhang Di Zhang Xi-Mao cui Xiao-Hua Jiang Shun Zhang Department of Gastrointestinal Surgery Shanghai East HospitalSchool of MedicineTongji UniversityShanghai 200120China School of Medicine Tongji UniversityShanghai 200092China Department of Emergency Medicine Shanghai East HospitalSchool of MedicineTongji UniversityShanghai 200120China

BACKGROUND Colorectal cancer(CRC)is a prevalent malignant neoplasm characterized by subtle early *** To investigate the correlation among serum lipid profiles,the triglyceride-glucose(TyG)index,and the atherosclerotic index(AI)in patients with ***,it explored the clinical diagnostic utility of combining serum lipids with cancer antigens in the context of *** A retrospective analysis encompassed 277 patients with CRC and 1034 healthy *** Following propensity score matching,patients with CRC exhibited significantly reduced levels of serum triglyceride(TG),total cholesterol(TC),high-density lipoprotein cholesterol,and low-density lipoprotein cholesterol(LDL-C),as well as a diminished TyG ***,they displayed elevated AI levels compared to their healthy *** in advanced stages exhibited lower serum levels of TG,TC,and LDL-C compared to those in early *** with positive lymph node metastasis demonstrated reduced levels of TG,LDL-C,and the TyG *** operating characteristic analysis revealed that the combination of the TyG index,carcinoembryonic antigen,and carbohydrate antigen 19-9 yielded the highest positive prediction rate for CRC at 75.3%.CONCLUSION Preoperative serum lipid profiles exhibit a robust association with patients with *** concurrent assessment of multiple serum lipids and cancer antigens effectively enhances the diagnostic accuracy for CRC.

关键词： Colorectal cancer Serum lipids Triglyceride-glucose index Atherosclerotic index Diagnostic marker

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双壁波纹钢管混凝土构件短柱轴压力学性能

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哈尔滨工业大学学报 2025年第1期57卷 56-64页

作者：路博崔燕方勇王玉银李豪哈尔滨工业大学土木工程学院哈尔滨150090 结构工程灾变与控制教育部重点实验室(哈尔滨工业大学) 哈尔滨150090 深圳市市政设计研究院有限公司广东深圳518029

为改善空心钢筋混凝土柱(HRC)的使用与受力性能,提出一种双壁波纹钢管混凝土(CFDCST)构件。本文共进行了4个大尺寸双壁波纹钢管混凝土短柱与2个空心钢筋混凝土短柱的轴压试验,关键试验参数为试件类型与波纹钢管类型。分析构件的破坏模式... 详细信息

为改善空心钢筋混凝土柱(HRC)的使用与受力性能,提出一种双壁波纹钢管混凝土(CFDCST)构件。本文共进行了4个大尺寸双壁波纹钢管混凝土短柱与2个空心钢筋混凝土短柱的轴压试验,关键试验参数为试件类型与波纹钢管类型。分析构件的破坏模式,对比不同参数下构件的承载力、峰值应变、延性系数等关键力学指标,获得荷载-波纹钢管应变关系曲线以揭示试件的约束机理并验证外波纹钢管类型的影响。试验结果表明:外波纹钢管可为夹层混凝土提供约束作用,且螺旋角越小,外波纹钢管的约束作用越强;内波纹钢管则主要为夹层混凝土内壁提供有效支撑,以保持截面的完整性。名义约束效应系数与空心率相近时,由于咬口滑移影响,大螺旋角双壁波纹钢管混凝土比小螺旋角双壁波纹钢管混凝土的峰值应力、峰值应变与延性系数分别降低15.5%、21.8%与16.7%。在总用钢量相近的情况下,小螺旋角双壁波纹钢管混凝土柱的承载力、峰值应变与延性系数分别比空心钢筋混凝土柱提高10.6%、36.2%与50.0%。基于试验结果,检验了3种典型承载力公式的适用性,并提出了相应设计建议。

关键词：组合结构空心钢筋混凝土波纹钢管双壁构件约束机理

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Phase stability and hardness of some ternary Ti-Zr based shape memory alloys

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International Journal of Smart and Nano Materials 2011年第4期2卷 272-282页

作者： yan Li Zhifang ru yan cui Kun Luo School of Materials Science and Engineering Beihang UniversityBeijing 100191China Beijing Key Laboratory for Advanced Functional Materials and Thin Film Technology Beihang UniversityBeijing 100191China Key Laboratory of Aerospace Materials and Performance(Ministry of Education) School of Materials Science and EngineeringBeihang UniversityBeijing 100191China

The phase stability and hardness of Ti–30Zr–M(M=Nb,V,Cr,Mo,Fe,Ni and Al)shape memory alloys were investigated by structural observations,d-electron alloy design and microhardness *** microscopy and X-ray diffraction results show that Nb,V,Cr,Mo and Fe are allβ-stability elements in Ti–30Zr–M alloys with the effect enhanced by the presence of *** composition of the least stableβ-phase alloy values of Nb,V,Cr,Mo and Fe in Ti–30Zr alloys are 12%,9%,5%,3%and 2%,respectively,indicating an increasing sequence of theβ-stability *** and Al showα-stability or moderate effects and the addition of Ni induces the appearance of(Ti,Zr)_(2)Ni phase in Ti–30Zr–5/15Ni *** on the d-electron alloy design method,the bond order of Ti and alloying atoms(Bo)and the metal d-orbital energy level(Md)are calculated to build the Bo–Md diagram of Ti–30Zr–M alloys associated with the phase structure *** microhardness of Ti–30Zr alloy is increased by addition of a small amount of the alloying element,except for *** is a drop of the microhardness of each Ti–30Zr–M alloys whenβphase appears by the addition of more alloying elements.

关键词： Ti-Zr shape memory alloy microstructure martensitic transformation d-electron alloy design

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Transport of nanodimers through chemical microchip

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Communications in Theoretical Physics 2020年第1期72卷 130-134页

作者： Shun Zhan ru-Fei cui Li-yan Qiao Jiang-Xing Chen Department of Physics Hangzhou Dianzi UniversityHangzhou310018China Department of Physics Zhejiang UniversityHangzhou310018China

We propose a new microfluid chip for transporting micro and nano *** device consists of chemical stripe pathways full of fuel species,which can be realized in experiments by chemical surface reactions that form spatiotemporal patterns.A mesoscopic model is constructed to simulate the transport dynamics of nanodimers passing through the *** is found that the increases of the volume fraction and radius of the dimer both decrease the first reach time although the underlying mechanisms are different:the volume fraction affects the probability of touching and entering the chip while the radius determines the self-propulsion within the *** transport efficiency is influenced by the size of the particles.

关键词： microchip catalytically sphere dimers chemical pathway multiparticle collision dynamics transport

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基于机器学习的不同地幔端元来源玄武岩判别及其元素地球化学特征研究

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岩石学报 2025年第1期41卷 339-350页

作者：崔岩王彦飞孟凡超刘浩毅刘展飞山东科技大学地球科学与工程学院青岛266590 中国科学院地质与地球物理研究所中国科学院油气资源研究重点实验室北京100029 中国科学院大学北京100049 中国科学院地球科学研究院北京100029 中国石油大学(华东)地球科学与技术学院青岛266580

地幔地球化学是固体地球科学研究的重要组成部分,认识和识别地幔不均一性对于探讨地幔内部物质循环、揭示地球演化规律具有重要意义。目前国际上公认的地幔端元划分方案主要依赖于幔源岩浆岩的同位素数据,但在实际应用中具有一定的局限... 详细信息

地幔地球化学是固体地球科学研究的重要组成部分,认识和识别地幔不均一性对于探讨地幔内部物质循环、揭示地球演化规律具有重要意义。目前国际上公认的地幔端元划分方案主要依赖于幔源岩浆岩的同位素数据,但在实际应用中具有一定的局限性。相较于同位素数据,主、微量元素数据的数量更大,实际应用前景更广阔。从数据分析的角度看,幔源岩浆岩的主微量元素有27个指标,远多于常用的Sr、Nd、Pb同位素指标,变量数目的增加可能会提高分类判断的精度,但是也会给分类带来两个问题:一是建模所需的样本数量大大增加;二是传统的二维、三维图版法不再适用。针对上述问题,本文从数据和方法两个层面入手:首先从全球共享地球化学数据库GEOROC和PetDb获取数据;然后采用机器学习方法建立判别模型,最终获得了基于元素特征的玄武岩地幔端元类型逻辑回归模型。该模型不仅具有很好的分类效果,而且有助于分析和总结来自不同地幔端元的玄武岩的元素地球化学特征。该研究对地幔不均一性的精细识别及与其相关的研究工作具有一定的促进作用。

关键词：玄武岩地幔端元划分主、微量元素地球化学数据库机器学习

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An efficient lossy link localization approach for wireless sensor networks

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Frontiers of Information Technology & Electronic Engineering 2017年第5期18卷 689-707页

作者： Wen-yan cui Xiang-ru MENG Bin-feng yanG Huan-huan yanG Zhi-yuan ZHAO College of Information and Navigation Air Force Engineering UniversityXi'an 710077China Department of Electronic Engineering Tsinghua UniversityBeijing 100084China PLA of 94543 lining 272000China

Network fault management is crucial for a wireless sensor network(WSN) to maintain a normal running state because faults(e.g., link failures) often occur. The existing lossy link localization(LLL) approach usually infers the most probable failed link set first, and then gives the fault hypothesis set. However, the inferred failed link set contains many possible failures that do not actually occur. That quantity of redundant information in the inferred set can pose a high computational burden on fault hypothesis inference, and consequently decreases the evaluation accuracy and increases the failure localization time. To address the issue, we propose the conditional information entropy based redundancy elimination(CIERE), a redundant lossy link elimination approach, which can eliminate most redundant information while reserving the important information. Specifically, we develop a probabilistically correlated failure model that can accurately reflect the correlation between link failures and model the nondeterministic fault propagation. Through several rounds of mathematical derivations, the LLL problem is transformed to a set-covering problem. A heuristic algorithm is proposed to deduce the failure hypothesis set. We compare the performance of the proposed approach with those of existing LLL methods in simulation and on a real WSN, and validate the efficiency and effectiveness of the proposed approach.

关键词： Lossy link localization Redundancy eliminating algorithm Set-covering Wireless sensor networks(WSNs) Network diagnosis

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