检索结果-南通市图书馆

Selenium Differentially Regulates Flavonoid Accumulation and Antioxidant Capacities in Sprouts of Twenty Diverse Mungbean(Vigna radiata(L.)Wilczek)Genotypes

引用

Phyton-International Journal of Experimental Botany 2024年第3期93卷 611-625页

作者： Fenglan Zhao Jizhi Jin meng Yang Franklin Eduardo Melo Santiago jianping Xue Li Xu Yongbo Duan Anhui Provincial Engineering Laboratory for Efficient Utilization of Featured Resource Plants College of Life SciencesHuaibei Normal UniversityHuaibei235000China Department of Soil Science Federal Institute of PiauiUruçuíPiauí64860-000Brazil The Second Affiliated Hospital of Guizhou University of Traditional Chinese Medicine Guiyang550003China

Seed germination with selenium(Se)is promising for producing Se-biofortiﬁed ***(Vigna radiata(L.)Wilczek)sprout is freshly eaten as a salad dressed with sauce,making it superior for Se biofortiﬁ*** the Se safety range for the human body is extremely narrow,it is imperative to evaluate the genotypic responses of mungbean sprouts to *** study evaluated the Se enrichment capacity and interaction withﬂavonoids and antioxidant systems in sprouts of 20 mungbean *** treatment was done by immersing mung-bean seeds in 20μM sodium selenite solution for 8 ***,the biomass,Se amounts,ﬂavonoid(particularly vitexin and isovitexin)contents,antioxidant capacity,and key biosynthetic gene expressions were *** Se content was 2.0-7.0μg g^(-1) DW among the 20 mungbean *** treatment differentially affected the biomass,totalﬂavonoid,vitexin,isovitexin,antioxidant enzyme activities,and antioxidant capacities of the mungbean *** germplasms showed increased biomass(p<0.05),the highest increasing by 127%,but 13 did not phenotypically respond to Se *** and six germplasms showed varied levels of vitexin and isovitexin increment after Se treatment,the highest measuring 2.67-and 2.87-folds for vitexin and isovitexin,*** mungbeanﬂavonoid biosynthesis genes,chalcone synthase(VrCHS)and chalcone isomerase(VrCHI)were signiﬁcantly up-regulated in the germplasms with increased vitexin and isovitexin levels(p<0.05).Moreover,Se enrichment capacity was signiﬁcantly correlated with the vitexin,isovitexin,and antiox-idant *** conclusion,mungbean sprouts could be a useful Se-biofortiﬁed food,but the Se enrichment capacity and nutritional response must be determined for each germplasm before commercialization.

关键词： Antioxidant capacity gene expression genotypic variation isovitexin vitexin selenium

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

Comparison of mantle-derived matierals from different spatiotemporal settings:Implications for destructive and accretional processes of the North China Craton

引用

Chinese Science Bulletin 2009年第19期54卷 3397-3416页

作者： ZHENG jianping State Key Laboratory of Geological Processes and Mineral Resources China University of Geosciences Wuhan 430074 China

Cratonic destruction or lithospheric thinning beneath North China makes it as one of the most ideal areas for the studying on the formation and evolution of continent. However, the mechanism, time, range and dynamic setting of the destruction, even the lithospheric status before the destruction, are contentious. The comparison among mantle xenoliths in the volcanic rocks from different captured times (e.g. Paleozoic, Mesozoic and Cenozoic) and locations (e.g. intra-plate or its rim, the translithospheric Tanlu fault or the North-South Gravity Line), and peridotitic massifs within the Sulu-Dabie ultrahigh-pressure metamorphism belt along the southern margin of the North China Craton, indicates that (1) the cratonic lithosphere is heterogeneous in structure and composition, and contains mantle weak zones; and (2) the Mesozoic-Cenozoic lithospheric thinning process is complex, including lateral spreading of lithosphere, interaction between melt and peridotite, non-even asthenospheric erosion (huge lithospheric thinning), and the limited lithospheric accretion and thus thickening, which resulted in the final replacement of the refractory cratonic lithosphere by juvenile fertile mantle. In early Mesozoic, the integrity of the North China Craton was interrupted, even destroyed by subduction and collision of the Yangtze block. The mantle wedge of the North China Craton was also metasomatized and modified by melt/fluids revealed from the subducted Yangtze continent. Lithospheric mantle extension and tectonic intrusion of the North China Craton also occurred, accompanied by the asthenospheric upwelling that due to the detachement of the subducted Yangtze continent (orogenic root). During early Cretaceous-early Tertiary, the huge thinning of lithosphere was triggered by the upwelling astheno- sphere due to the subduction of the Pacific plate. Since late Tertiary, the cooling of the upwelling asthenosphere resulted in the replacement of the mantle in existence by the newly acc

关键词：火山岩石中生代新生代调查地球物理学

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

Geological Features of the Eastern Sector of the Bangong Co-Nujiang River Suture Zone:Tethyan Evolution

引用

Acta Geologica Sinica(English Edition) 2000年第2期74卷 229-235页

作者： WANG jianping Regional Geological Survey Party Henan Bureau of Geology and Mineral Exploration and DevelopmentPingdingshan 467021Henan

According to an analysis of the geological features in the eastern sector of the Bangong Co-Nujiang River suture zone, the Tethyan evolution can be divided into three stages. (1) The Embryo-Tethyan stage (Pz1): An immature volcanic arc developed in Taniantaweng (Tanen Taunggyi) Range, indicating the existence of an Embryo-Tethyan ocean. (2) The Palaeo-Tethyan stage (C-T2: During the Carboniferous the northern side of the Taniantaweng Range was the main domain of the Palaeo-Tethyan ocean, in which developed flysch sediments intercalated with bimodal volcanic rocks and oceanic tholeiite, and Pemian-Early Triassic are granites were superimposed on the Taniantaweng magmatic are; on the southern side the Dêngqên-Nujiang zone started secondary extension during the Carboniferous, in which the Nujiang ophiolite developed, and the Palaeo-Tethyan ocean closed before the Middle Triassic. (3) The Neo-Tethyan stage (T3-E): During the Late Triassic the Dêngqên zone developed into a relatively matural ocean basin, in which the Dêngqên ophiolite was formed. By the end of the Triassic intraocean subduction occurred, and the ocean domain was reduced gradually, and collided and closed by the end of the Early Jurassic, forming the Yazong mélange; then the Tethyan ocean was completely closed.

关键词： Bangong Co-Nujiang River suture zone Tethyan evolution Embryo-Tethys Palaeo-Tethys Neo-Tethys

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

Calcium carbonate promotes the formation and stability of soil macroaggregates in mining areas of China

引用

Journal of Integrative Agriculture 2024年第3期23卷 1034-1047页

作者： Junyu Xie Jianyong Gao Hanbing Cao Jiahui Li Xiang Wang Jie Zhang Huisheng meng jianping Hong Tingliang Li Minggang Xu College of Resources and Environment Shanxi Agricultural UniversityTaigu 030801China Shanxi Province Key Laboratory of Soil Environment and Nutrient Resources Taiyuan 030031China College of Land Science and Technology China Agricultural UniversityBeijing 100193China

We studied changes in the concentrations of aggregate-cementing agents after different reclamation times and with different fertilization regimes,as well as the formation mechanism of aggregates in reclaimed soil,to provide a theoretical basis for rapid reclamation of soil fertility in the subsidence area of coal mines in Shanxi Province,*** this study,soil samples of 0–20 cm depth were collected from four fertilization treatments of a longterm experiment started in 2008:no fertilizer (CK),inorganic fertilizer (NPK),chicken manure compost (M),and50%inorganic fertilizer plus 50%chicken manure compost (MNPK).The concentrations of cementing agents and changes in soil aggregate size distribution and stability were *** results showed that the formation of>2 mm aggregates,the aggregate mean weight diameter (MWD),and the proportion of>0.25 mm water-stable aggregates (WR_(0.25)) increased significantly after 6 and 11 years of *** concentration of organic cementing agents tended to increase with reclamation time,whereas free iron oxide (Fed) and free aluminium oxide(Ald) concentrations initially increased but then *** general,the MNPK treatment signi?cantly increased the concentrations of organic cementing agents and CaCO_(3),and CaCO_(3) increased by 60.4%at 11 years after ***,CaCO_(3) had the greatest effect on the stability of aggregates,promoting the formation of>0.25 mm aggregates and accounting for 54.4%of the variance in the proportion and stability of the *** was concluded that long-term reclamation is bene?cial for improving soil *** MNPK treatment was the most effective measure for increasing maize grain yield and concentration of organic cementing agents and CaCO_(3).

关键词： reclamation time manure combined with inorganic fertilizer soil aggregate stability cementing agents CaCO_(3)

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

Neural adaptive control for a ground experiment of the space proximity operation in a six-degree-of freedom micro-gravity simulation system

引用

Chinese Journal of Aeronautics 2020年第9期33卷 2420-2433页

作者： Chong SUN jianping YUAN Zhanxia ZHU School of Astronautics Northwestern Polytechnical UniversityXi'an 710100China Research and Development Institute of Northwestern Polytechnical University in ShenZhen Shenzhen518057China

In this study,a neural adaptive controller is developed for a ground experiment with a spacecraft proximity *** the water resistance in the experiment is highly nonlinear and can significantly affect the fidelity of the ground experiment,the water resistance must be estimated accurately and compensated using an active force *** this problem,a novel control algorithm combined with Chebyshev Neural Networks(CNN)and an Active Disturbance Rejection Control(ADRC)is ***,the CNN algorithm is used to estimate the water *** advantage of the CNN estimation is that the coefficients of the approximation can be adaptively changed to minimize the estimation *** with the ADRC algorithm,the total disturbance is compensated in the experiment to improve the *** dynamic model of the spacecraft proximity maneuver in the experiment is *** ground experiment of the proximity maneuver that considers an obstacle is provided to verify the efficiency of the proposed *** results demonstrate that the proposed method outperforms the pure ADRC method and can achieve close-to-real-time performance for the spacecraft proximity maneuver.

关键词： Active disturbance rejection control Adaptive controller Ground experiment Micro-gravity Obstacle avoidance Spacecraft proximity

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

Tandem engineering for CO_(2)electrolysis toward multicarbon products

引用

Nano Research 2023年第7期16卷 8670-8683页

作者： Tinghui Yang Min Kuang jianping Yang State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringDonghua UniversityShanghai 201620China

Electrocatalysis of CO_(2)toward multicarbon(C_(2+))products have multifaceted applications in the energy and chemical industries,offers an attractive route to mitigate carbon emissions and abate the depletion of fossil ***,the productivity of CO_(2)-to-C_(2+)products suffers from a low selectivity and reaction rate owing to the difficulty in C-C coupling and the multiple electronproton transfer ***,numerous tandem catalysts have been developed to improve the selectivity and formation rate of CO_(2)-to-C_(2+)products via coupled multiple reaction steps,exhibiting high industrial *** review summarized recent progresses in the formation of C_(2+)products from CO_(2)electrolysis on tandem *** this review,we highlight the cooperative regulation strategy of tandem catalysts formed by introducing different types of new components and reveal the relationships between*CO intermediate mass transport and the selectivity of C_(2+)***,theoretical insight into the tandem catalytic mechanisms underlying the enhanced C_(2+)selectivity is also ***,the remaining challenges and opportunities for the electrocatalytic CO_(2)toward C_(2+)products are discussed.

关键词： CO_(2)electrolysis tandem catalysts mass transports spillovers multicarbon compounds

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

DNA replication licensing control and rereplication prevention

引用

Protein & Cell 2010年第3期1卷 227-236页

作者： Chonghua Li jianping Jin Department of Biochemistry and Molecular Biology The University of Texas Medical School at HoustonHoustonTX 77030USA The Graduate School of Biomedical Sciences The University of Texas Health Science Center at HoustonHoustonTX 77030USA

Eukaryotic DNA replication is tightly restricted to onlyonce per cell cycle in order to maintain genome *** use multiple mechanisms to control the assemblyof the prereplication complex (pre-RC), a process knownas replication licensing. This review focuses on theregulation of replication licensing by posttranslationalmodifications of the licensing factors, including phosphorylation, ubiquitylation and acetylation. These modifications are critical in establishing the pre-RCcomplexes as well as preventing rereplication in each cellcycle. The relationship between rereplication and diseases, including cancer and virus infection, is discussedas well.

关键词： DNA replication licensing rereplication protein modification

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

Vector mode based optical direct detection orthogonal frequency division multiplexing transmission in short-reach optical link

引用

Frontiers of Optoelectronics 2019年第1期12卷 41-51页

作者： jianping LI Zhaohui LI Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications Institute of Photonics TechnologyJinan UniversityGuangzhou 510632China State Key Laboratory of Optoelectronic Materials and Technologies and School of Electronics and Information Technology Sun Yat-sen UniversityGuangzhou 510275China

As one solution to implement the largecapacity space division multiplexing(SDM)transmission systems,the mode division multiplexing(MDM)has gained much attention *** vector mode(VM),which is the eigenmode of the optical fiber,has also been adopted to realize the optical communications including the transmission over free-space optical(FSO)and optical fiber *** the concerns on the short-reach optical interconnects,the low cost and high integration technologies should be *** detection(DD)with higher-order modulation formats in combination of MDM technologies could offer an available trade-off in system performance and *** review demonstrations of FSO and fiber high-speed data transmission based on the VM MDM(VMDM)*** special VMs,cylindrical vector beams(CVB),have been generated by the q-plate(QP)and characterized *** then they were used to implement the VMDM transmission with direct-detection orthogonal frequency division multiplexing(DD-OFDM).These demonstrations show the potential of VMDM-DD-OFDM technology in the large-capacity short-reach transmission links.

关键词： space division multiplexing (SDM) mode division multiplexing (MDM) few-mode fiber (FMF) vector mode (VM) cylindrical vector beam (CVB) orthogonal frequency division multiplexing (OFDM) direct detection (DD) optical interconnect

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

Failure mechanisms of roadways with non-coplanar axial direction and stress space:True triaxial test and mechanical analysis

引用

International Journal of Mining Science and Technology 2024年第12期34卷 1711-1725页

作者： Zongyu Ma jianping Zuo School of Mechanics and Civil Engineering China University of Mining and Technology-BeijingBeijing 100083China International Innovation Center for Mining Rock Mechanics China University of Mining and Technology-BeijingBeijing 100083China

The axial direction of a roadway often forms a certain spatial angle with the in-situ stress *** in the spatial angles can lead to differences in the stress environment in which the roadway is *** forms of failure characteristics occur in the *** order to study the failure mechanism with different spatial characteristics,rock-like material specimens with holes in 9 different horizontal and vertical angles were *** true triaxial test system was used to carry out the test with the same loading *** results show that the horizontal angle a and vertical angle β have a significant effect on the specimen strength,specimen rupture angle,and the form of spalling failure in the *** spatial angle leads to the formation of asymmetric heterotype V-notches in both sides within the *** asymmetry is evident in both the depth and extent of *** strength of the specimen increases and then decreases with increasing vertical angle β.The rupture angle increases and then decreases with increasing horizontal angle a and increases with the increase of the vertical angle β.The stress analytical model of the specimen under three-dimensional compression was *** distribution of principal stresses around the holes was theoretically *** is found that the presence of spatial angle changes the distribution of principal stresses around the hole from symmetric to asymmetric *** shift of the principal stresses is responsible for the change from a V-notch to a heterotype V-notch.

关键词： Spatial roadways Failure mode Heterotype V-notch Asymmetric failure

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

TRANSIENT-STATE RESPONSE OF WAVE PROPAGATION IN MAGNETO-ELECTRO-ELASTIC SQUARE COLUMN

引用

Acta Mechanica Solida Sinica 2008年第6期21卷 491-499页

作者： jianping Wei Xianyue Su LTCS and Department of Mechanics and Aerospace Engineering Peking University Beijing 100871 China

This is a continued work in studying the wave propagation in a magneto-electroelastic square column （MEESC）. Based on the analytic dispersive equation, group velocity equation and steady-state response obtained in our previous paper ＇Steady-state response of the wave propagation in a magneto-electro-elastic square column＇ published in CME, the dynamical behavior of MEESC was studied in this paper. The unlimited column is an open system. The transientstate response in the open system subjected by arbitrary external fields was derived when the propagating wave pursuing method was introduced.

关键词： magneto-electro-elastic square column open system transient-state response propagating wave pursuing method

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

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：