检索结果-南通市图书馆

A cell wall invertase modulates resistance to fusarium crown rot and sharp eyespot in common wheat

Journal of Integrative Plant Biology 2023年第7期65卷 1814-1825页

作者： Guoguo Lv Yixiao Zhang Lin Ma Xiangning Yan Mingjie Yuan Jianhui Chen Yongzhen Cheng Xi Yang qi qiao Leilei Zhang Mohsin Niaz Xiaonan Sun qijun Zhang Shaobin Zhong Feng Chen National Key Laboratory of Wheat and Maize Crop Science/CIMMYT‐China Wheat and Maize Joint Research Center/Agronomy College Henan Agricultural UniversityZhengzhou 450000China Department of Plant Pathology North Dakota State UniversityFargoNorth DakotaUSA

Fusarium crown rot(FCR) and sharp eyespot(SE)are serious soil-borne diseases in wheat and its relatives that have been reported to cause wheat yield losses in many areas. In this study, the expression of a cell wall invertase gene, TaCWI-B1,was identified to be associated with FCR resistance through a combination of bulk segregant RNA sequencing and genome resequencing in a recombinant inbred line population. Two biparental populations were developed to further verify TaCWI-B1 association with FCR *** lines and ethyl methanesulfonate(EMS) mutants revealed TaCWI-B1 positively regulating FCR resistance. Determination of cell wall thickness and components showed that the TaCWI-B1-overexpression lines exhibited considerably increased thickness and pectin and cellulose contents. Furthermore, we found that TaCWI-B1 directly interacted with an alphagalactosidase(TaGAL). EMS mutants showed that TaGAL negatively modulated FCR resistance. The expression of TaGAL is negatively correlated with TaCWI-B1 levels, thus may reduce mannan degradation in the cell wall, consequently leading to thickening of the cell wall. Additionally, TaCWI-B1-overexpression lines and TaGAL mutants showed higher resistance to SE;however, TaCWI-B1 mutants were more susceptible to SE than *** study provides insights into a FCR and SE resistance gene to combat soil-borne diseases in common wheat.

关键词： cell wall thickness common wheat fusarium crown rot sharp eyespot TaCWI gene

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

THE INFLUENCE OF MAXWELL STRESS ON THE FRACTURE MECHANICS OF 2D PIEZOELECTRIC MATERIALS BASED ON THE PS MODEL

THE INFLUENCE OF MAXWELL STRESS ON THE FRACTURE MECHANICS OF...

引用

2016年全国压电和声波理论及器件应用研讨会

作者： Yu-hao LI Lu-qiao qi Cun-fa GAO State Key Laboratory of Mechanics and Control of Mechanical Structures Nanjing University of Aeronautics and Astronautics

ISBN: (纸本)9781509011902

Background, Motivation and Objective Piezoelectric materials have widespread applications in modern technology. However, piezoelectric materials have their drawbacks which are their inherent brittleness and low fracture toughness. Hence, much attention has been devoted to the failure analysis of piezoelectric materials for the last several decades. This paper considers the influence of Maxwell stress on a straight but non-linear polarization saturation(PS) crack in a 2D piezoelectric material under combined mechanical and electric loadings at infinity. The non-linear piezoelectric fracture mechanics model, which is the PS model, is adopted in this paper. We also assume the crack to be the electrically semi-permeable. Statement of Contribution/Methods Based on the Stroh’s formalism and the dislocation modelling of a crack, we derive the relationships among the strip zone, the applied mechanical and electric loadings, the intensity factors of stresses and electric displacement and the local J-integral. The implicit expression of size of the electrically yielded zone and the electric displacement in the crack cavity are given. It is the first time that the Maxwell stress is taken into consideration in the non-linear PS model for a crack. Results Numerical results are given to discuss the effects of Maxwell stress on the intensity factors of stresses, the electric displacement and the size of the electrically yielded zone, respectively. The normalized stress intensity factor always increases as the applied mechanical loadings or the applied electric loadings increase. The electric displacement in the crack cavity decreases with the increased mechanical loading and the size of the electrically yielded zone increases with the mechanical loading. Discussion and Conclusions It is found that the Maxwell stress can relieve the crack growth under a given mechanical and electric loading. The effect of Maxwell stress on piezoelectric medium fracture is significant. Especially fo

关键词： Piezoelectric fracture Maxwell stress Polarization saturation(PS) model Semi-permeable crack Stress intensity factor

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Self-growth of gold nanostructures based on cell and cell vesicles for combinatorial therapy against tumor

Self-growth of gold nanostructures based on cell and cell ve...

引用

2018年第十二届中国药物制剂大会

作者：章丹 Xianya qin Tingting Wu qi qiao Zhiping Zhang Tongji School of Pharmacy Huazhong University of Science and Technology

Gold nanoparticles（AuNP） of various structures have been widely studied and applied in drug delivery, photothermal therapy（PTT）, theranostic and so on. With tunable surface functionalities, efficient light-to-heat conversion, good photostability, low toxicity and well-defined physicochemical properties [1]. Gold ions can be reduced taking advantages of the cellular environment, proteins and membranes. In this basis, we designed biomimetic AuNP vesicles exploiting cells or extracellular vesicles. The gold nanoparticles can be grown into different structures based on different method of preparing vesicles. The biomimetic AuNP vesicles can maintain the properties of AuNP for PTT and the bioinformation of cells for enhanced biocompatibility and further application on immunological therapy against tumor. As shown in Fig. 1 A, AuNP were intracellularly generated and then were shed outside the cells as AuNP entrapped vesicels with size around 40 nm. With extruded extracellular vesicles, AuNP were grown on the surface of the vesicles and formulated the nanoclusters（Fig. 1 B）. The biomimetic AuNP vesicles possessed excellent photothermal transduction ability（Fig. 2 A）. And the AuNP@B16 F10 displayed an outstanding antitumor therapeutic effect as shown in Fig. 2 B. This work provides a promising modality for cancer therapy.

关键词： self-growth gold nanostructures vesicles combinatorial therapy cancer therapy

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

EFFECTS OF MAXWELL STRESSES ON THE MOVING CRACK IN PIEZOELECTRIC MATERIAL

EFFECTS OF MAXWELL STRESSES ON THE MOVING CRACK IN PIEZOELEC...

引用

2016年全国压电和声波理论及器件应用研讨会

作者： Lu-qiao qi Yu-hao LI Cun-fa GAO State Key Laboratory of Mechanics and Control of Mechanical Structures Nanjing University of Aeronautics and Astronautics

Background, Motivation and Objective In fracture mechanics of electric dielectrics, the Maxwell stresses have great influence on electric fields of cavity with vacuum、air or liquid. Thus, the problems of Maxwell stress in piezoelectric solids have aroused great interest. In recent years, some analytical researches have been focused on the Maxwell stress, e.g., see the works of Gao et al.(2004), Mc Meeking and Landis(2005), Ricoeur and Kuna(2009), Bustamante et al.(2009), Zhang and Wang(2014), Wang(2014). However, all the above studies are for the cases of static cracks. It is well known that the moving crack properties are quite different with the static ones. Yoffe(1951) studied the tip fields of a crack moving with a constant length for all the time. She came to the conclusion that there is a critical velocity of about 0.6 times of the shear wave velocity, at which the crack tends to curve and branch out. And at lower velocities, the initial growth is expected to occur along the line of the crack. There are many analytical researches focused on the propagation crack in traditional materials, e.g., Chen, et al.(1997,1998), Gao, et al.(2001), Li and Chen(2008), Kwon and Lee(2000), Soh, et al.(2002), Chen, et al.(2013). But, to the best of my knowledge, the effects of the Maxwell stress on the moving crack in a piezoelectric solid have not been studied well. Statement of Contribution/Methods In this paper, a plane problem of a moving crack with constant velocity in piezoelectric materials is investigated systematically. The electrically semi-permeable crack boundary condition is adopted. Based on the extended Stroh formalism, the closed-form expression of electric displacement in the moving crack, the electrostatic fields and dynamic stress and dynamic electric intensity factors are obtained. Results Analytical results are presented and numerical solutions for PZT-5H material are also given graphically. The influence of Maxwell stresses and the speed of the crack and

关键词： Maxwell stress Moving crack Critical velocity Plane problem

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

“道德视景”与“感时忧国”:夏志清《中国现代小说史》再审视

引用

四川大学学报（哲学社会科学版） 2022年第2期 113-123页

作者：乔琦邓艮西安外国语大学中国语言文学学院西安710128

夏志清《中国现代小说史》受“新批评”派及利维斯《伟大的传统》之影响,早已是学界老生常谈的事实。但为什么是“新批评”和“大传统”,亦即新批评和大传统如何影响着夏氏的选择和批评判断,以及这种“影响”在什么意义上才是有效的,却... 详细信息

夏志清《中国现代小说史》受“新批评”派及利维斯《伟大的传统》之影响,早已是学界老生常谈的事实。但为什么是“新批评”和“大传统”,亦即新批评和大传统如何影响着夏氏的选择和批评判断,以及这种“影响”在什么意义上才是有效的,却缺少追问。从道德的形式到形式的道德,夏氏孜孜矻矻于小说史对“道德视景”的呈现,在其持久的道德热情背后,映射出的是一个华人知识分子有关家国和文化传统的道德焦虑及其孤悬海外的道德身影。当我们对这部问世已60年的著作重审细读可以发现,夏氏认同、珍视中国现代小说“感时忧国”的大传统,正是其当年孤悬海外、反观故国时,以学术研究的形式而“感忧”的道德生活与道德抉择,以小说史的写作来完成对自身生命“不完整”的补偿和深切拥抱。

关键词：夏志清《中国现代小说史》 “形式”的道德道德视景感时忧国

来源：

维普期刊数据库博看期刊

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Copy number variation profile-based genomic typing of premenstrual dysphoric disorder in Chinese

引用

Journal of Genetics and Genomics 2021年第12期48卷 1070-1080页

作者： Hong Xue Zhenggang Wu Xi Long Ata Ullah Si Chen Wai-Kin Mat Peng Sun Ming-Zhou Gao Jie-qiong Wang Hai-Jun Wang Xia Li Wen-Jun Sun Ming-qi qiao Shandong University of Traditional Chinese Medicine JinanShandong 250355China Division of Life Science and Applied Genomics Center Hong Kong University of Science and TechnologyHong KongChina School of Basic Medicine and Clinical Pharmacy China Pharmaceutical UniversityNanjingJiangsu 210009China HKUST Shenzhen Research Institute NanshanShenzhen 518057China Guangzhou HKUST Fok Ying Tung Research Institute Science and Technology BuildingNansha Information Technology ParkNanshaGuangzhou 511458China

Premenstrual dysphoric disorder(PMDD) affects nearly 5% of women of reproductive age. Symptomatic heterogeneity, together with largely unknown genetics, has greatly hindered its effective treatment. In the present study, analysis of genomic sequencing-based copy number variations(CNVs) called from 100 kb white blood cell DNA sequence windows by means of semisupervized clustering led to the segregation of patient genomes into the D and V groups, which correlated with the depression and invasion clinical types,respectively, with 89.0% consistency. Application of diagnostic CNV features selected using the correlation-based machine learning method enabled the classification of the CNVs obtained into the D group, V group, total patient group, and control group with an average accuracy of 83.0%. The power of the diagnostic CNV features was 0.98 on average, suggesting that these CNV features could be used for the molecular diagnosis of the major clinical types of PMDD. This demonstrated concordance between the CNV profiles and clinical types of PMDD supported the validity of symptom-based diagnosis of PMDD for differentiating between its two major clinical types, as well as the predominantly genetic nature of PMDD with a host of overlaps between multiple susceptibility genes/pathways and the diagnostic CNV features as indicators of involvement in PMDD etiology.

关键词： Clinical subtyping Genomic sequencing Machine learning Recurrent copy number variation Replication phase Semisupervized

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Improved Corrosion Resisting Property of Magnetism Iron Fiber by SiO<sub>2</sub>Coating

引用

Journal of Surface Engineered Materials and Advanced Technology 2012年第3期2卷 163-166页

作者： Dongying Niu Jinku Yu qi qiao Dongdong Wang Runhai Liu State Key Laboratory of Metastable Materials Science and Technology Yanshan University Qinhuangdao China.

To improve the oxidation resistance property of iron fibers, a SiO2 coated iron fiber was prepared by sol-gel method, and its microstructure, element and phase composition, antioxidation property, and crystallization were characterized by scanning electron microscopy, thermal gravimetric analysis, X-ray diffraction and 3% CuSO4 solution dripping. It was found that the surface of the iron fiber can be fully covered with SiO2 by using Sol-Gel method. Our results also indicated that the time of iron begin to be corrupted in 3% CuSO4 solution drip increased from 30 s to 240 s, and the temperature increased from 200?C to 310?C. In addition, the oxidation and antioxidation mechanisms of the SiO2 coated iron fiber have also been discussed in this work.

关键词： Corrosion Resistance Anti-Oxidation Sol-Gel Method SiO2

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

荀彧“失语”与赤壁之败及曹操用人之变

引用

河北学刊 2016年第5期36卷 192-197页

作者：乔凤岐许昌学院魏晋文化研究中心河南许昌461000

赤壁之战后,曹操觉察到谋士荀彧叔侄在战前不再献策而"失语"之因,在于他们忠于汉室而希望自己战败,在意识到这一问题的严重性后,他遂实施了"除旧布新"的用人新政:一方面逐步翦除集团中已显露出拥汉心理及可能存在拥汉心理者;另一方面,... 详细信息

赤壁之战后,曹操觉察到谋士荀彧叔侄在战前不再献策而"失语"之因,在于他们忠于汉室而希望自己战败,在意识到这一问题的严重性后,他遂实施了"除旧布新"的用人新政:一方面逐步翦除集团中已显露出拥汉心理及可能存在拥汉心理者;另一方面,三下求才之令,重新构建忠于曹氏代汉的人才集团,侧重于任用寒人并限制性地任用士族。因此,赤壁之败是曹操用人方略的分水岭:此前,表面上还能依从汉朝以德为先的用人老路;而此后,就公开"唯才是举"了。其本质是唯拥护曹氏代汉之才是举,但曹丕即位后抛弃其父限制性使用士族的方略,遂为曹魏的败亡埋下了制度上的祸根。

关键词：荀彧失语赤壁之败曹操用人之变

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

The free-exploratory paradigm as a model of trait anxiety in Kunming mice:test-retest reliability

The free-exploratory paradigm as a model of trait anxiety in...

引用

第十二届全国青年药学工作者最新科研成果交流会

作者： SUN Shi-guang SUN Rong ZHANG Hui-yun qiao ming-qi College of Pharmacy Shandong University of Traditional Chinese Medicine Department of Pharmacy Second Affiliated Hospital of Shandong University of Traditional Chinese Medicine Shandong Provincial Hospital of Integrated Medicine Shandong Academy of Chinese Medicine Key Laboratory of the Classical Theory of Traditional Chinese Medicine of Ministry of Education Shandong University of Traditional Chinese Medicine

The free exploratory paradigm has been proposed as a model of trait *** definition,trait anxiety does not vary from moment to moment,therefore any model used to evaluate it needs to give the same results in sequential *** aim of this study was to evaluate the test-retest reliability of free-exploratory paradigm in *** behavior of drug-naive,adult,male,Kunming mice was measured in the free-exploratory apparatus on two occasions,either one week apart（Experiment I） or four weeks apart（Experiment II）.The following parameters were evaluated:percentage of time spent in the novel compartment（Ntime%）;percentage of novel compartment units visited（Ncross%）;percentage of number of rears in the novel compartment（Nrear%）;and attempts to enter the novel compartment（Attempts）.Subsequently,the intraclass correlation coefficient（ICC） and the Kappa index（k） were calculated for each of these *** of the parameter Nrear%in Experiment I showed the acceptable values of ICC（0.755） and κ（0.520）,respectively,indicating good and fair reliability with a one-week inter-trial *** in Experiment n,both ICC and k of all the parameters failed to show a reasonable test/retest concordance,suggesting that with a four-week inter-trial interval,the reliability may diminish,or even ***,our results still bring further support to free-exploratory paradigm as an animal model of trait anxiety.

关键词： free-exploratory paradigm trait anxiety animal model test-retest reliability Kunming mice

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Concept to devices:from plasmonic light trapping to upscaled plasmonic solar modules[Invited]

引用

Photonics Research 2013年第1期1卷 22-27页

作者： Baohua Jia Xi Chen Jhantu Kumar Saha qi qiao Yongqian Wang Zhengrong Shi Min Gu Centre for Micro-Photonics Faculty of Engineering and Industrial SciencesSwinburne University of TechnologyPO Box 218HawthornVictoria 3122Australia Suntech Power Holdings Co. Ltd.9 Xinhua RoadNew DistrictWuxiJiangsu Province 214028China

The concept of using plasmonic nanostructures to manage light in solar cells has offered an unprecedented potential for dramatically increased solar energy conversion efficiency that breaks the previously predicated efficiency *** the past decade,intensive research efforts have been focused on this ***,nanoplasmonic solar cells still remained in the laboratory *** facilitate the transformation of the nanoplasmonic solar cell concept to a viable high-efficiency technology solution for the solar industry,it is essential to address key fundamental as well as practical challenges including the detrimental absorption of metallic nanostructures,narrow-band absorption enhancement in the active layer,the high cost and scarcity of noble metals,and the expensive and complicated plasmonic nanomaterial fabrication and integration *** this paper,after a brief review of our main results in nanoplasmonic solar cells,we present our strategies for using innovative photonic methods to overcome these challenges and demonstrate a large-area(173 cm2)broadband plasmonic thin-film solar minimodule with an efficiency of 9.5%resulting from the enhanced plasmonic light scattering enabled by silver lumpy nanoparticles with an ultralow nanoparticle coverage density of 5%.

关键词： light trapping absorption

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：