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Triple three-dimensional MS/MS spectrum facilitates quantitative ginsenosides-targeted sub-metabolome characterization in notoginseng

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Acta Pharmaceutica Sinica B 2024年第9期14卷 4045-4058页

作者： Ke Zhang Jinru Jia Ting Li Wenjing Liu Pengfei tu {1.-Bo Wan jun Li Yuelin Song Modern Research Center for Traditional Chinese Medicine Beijing Research Institute of Chinese MedicineBeijing University of Chinese MedicineBeijing 100029China SCIEX china Beijing 100015China school of Pharmacy Henan University of Chinese MedicineZhengzhou 450046China State Key Laboratory of Quality Research in Chinese Medicine Institute of Chinese Medical SciencesUniversity of MacaoTaip1Macao 999078China

Although serving as the workhorse,MS/MS cannot fully satisfy the analytical requirements of quantitative sub-metabolome *** more information intrinsically correlates to more structural and concentration clues,here,efforts were devoted to comprehensively tracing and deciphering MS/MS behaviors through constructing triple three-dimensional(33D)-MS/MS ***-targeted metabolomics of notoginseng,one of the most famous edible medicinal plants,was employed as a *** authentic ginsenosides were deployed to build the correlations between 33D-MS/MS spectra and structure/concentration *** assaying ginsenosides with progressive concentrations using QTOF-MS to configure 1.t 3D spectrum,the generations of MS1.spectral signals,particularly multi-charged multimer anions,e.g.,[2Me2H]2e and[2Mt2HCOO]2e ions,relied on both concentration and the amount of sugar *** programming progressive collision energies to the front collision cell of Qtrap-MS device to gain 2nd 3D spectrum,optimal collision energy(OCE)corresponding to the glycosidic bond fission was primarily correlated with the masses of precursor and fragment ions and partially governed by the glycosidation *** quantitative relationships between OCEs and masses of precursor and fragment ions were utilized to build large-scale quantitative program for *** applying progressive exciting energies to the back collision chamber to build 3rd 3D spectrum,the fragment ion and the decomposition product anion exhibited identical dissociation trajectories when they shared the same molecular *** ginsenosides-focused quantitative metabolomics,significant differences occurred for sub-metabolome amongst different parts of *** differential ginsenosides were confirmatively identified by applying the correlations between 33D-MS/MS spectra and ***,33D-MS/MS spectrum covers all MS/MS behaviors and dramatically faci

关键词： Quantitative submetabolome characterization Ginsenosides Structural identification Notoginseng Full exciting energy ramp-MS3 spectrum

Influence of pore structure heterogeneity on channeling channels during hot water flooding in heavy oil reservoir based on CT scanning

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Petroleum science 2024年第4期21卷 2407-2419页

作者： Qing-jun Du Hao-Yu Zheng {1. Hou Yong-Ge Liu {1.-Fang Sun Dong Zhao State Key Laboratory of Deep Oil and Gas China University of Petroleum (East China) school of Petroleum Engineering China University of Petroleum (East China) Laboratory for Marine Mineral resources Qingdao National Laboratory for Marine Science and Technology Petroleum Exploration and Production Research Institute

Hot water flooding is an effective way to develop heavy oil reservoirs. However, local channeling channels may form, possibly leading to a low thermal utilization efficiency and high water cut in the reservoir. The pore structure heterogeneity is an important factor in forming these channels. This study proposes a method that mixes quartz sand with different particle sizes to prepare weakly heterogeneous and strongly heterogeneous models through which hot water flooding experiments are *** the experiments, computer tomography(CT) scanning identifies the pore structure and micro remaining oil saturation distribution to analyze the influence of the pore structure heterogeneity on the channeling channels. The oil saturation reduction and average pore size are divided into three levels to quantitatively describe the relationship between the channeling channel distribution and pore structure heterogeneity. The zone where oil saturation reduction exceeds 20% is defined as a channeling *** scanning area is divided into 1.0 equally sized zones based on the CT scanning images, and threedimensional(3D) distributions of the channeling channels are developed. Four micro remaining oil distribution patterns are proposed, and the morphology characteristics of micro remaining oil inside and outside the channeling channels are analyzed. The results show that hot water flooding is more balanced in the weakly heterogeneous model, and the oil saturation decreases by more than 20% in most zones without narrow channeling channels forming. In the strongly heterogeneous model, hot water flooding is unbalanced, and three narrow channeling channels of different lengths form. In the weakly heterogeneous model, the oil saturation reduction is greater in zones with larger pores. The distribution range of the average pore size is larger in the strongly heterogeneous model. The network remaining oil inside the channeling channels is less than outside the channeling channels,

关键词： Heavy oil Hot water flooding Pore structure Channeling channels CT scanning

Growth of Carbon Encapsulated Long Nickel Nanorods on Bulk Nickel Substrate

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Journal of Wuhan university of Technology(Materials {1.) 2011年第1期26卷 28-32页

作者：宾晓蓓 College of resources & {1. Engineering Wuhan University of Technology

Carbon nanotube encapsulated nickel nanorods were catalytic grown via pyrolysis of oil on a bulk nickel wire substrate. X-ray diffraction, scanning electron microscopy, high-resolution transmission electron microscopy and Raman spectroscopy were employed to characterize the as-prepared sample. The results show that, carbon nanotubes possess several microns in length, the filled metallic nickel nanorods with a uniform diameter of 35 nm were tightly encapsulated by the carbon capsules. The detailed formation mechanism for the carbon nanotubes encapsulated nickel nanorods were discussed briefly.

关键词： carbon nanotube nickel nanorod pyrolysis core-shell

Rapid lithium-ion insertion/extraction and migration behavior of Na_(2)WO_(4)-encapsulated lithium-rich layered oxide cathode

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Rare Metals 2024年第8期43卷 3647-3660页

作者： Yu-Shen Zhao Fan-Fan Wang jian-Cang Wang Peng-Fei Wang Ting-Feng Yi {1.-Hong Zhang school of Materials {1. and Engineering Northeastern UniversityShenyangShenyang 110819China Key Laboratory of Dielectric and Electrolyte Functional Material Hebei Province School of Resources and MaterialsNortheastern University at QinhuangdaoQinhuangdao 066004China Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology College of Chemistry and Chemical EngineeringLiaocheng UniversityLiaocheng 252059China

Due to the low cost,high working voltage and high storage capacity,Li-rich Mn-based layered compounds show promise as the cathode materials for lithiumion batteries(LIBs).However,the side reactions at the solid-liquid interface of the cathode will lead to rapid capacity decay and inferior rate ***,this article proposes a liquid-phase dispersion strategy to introduce a Na_(2)WO_(4)layer on the Li_(1.2)Ni_(0.1.)-Co_(0.1.)Mn_(0.54)O_(2) cathode,which can reduce the side effects between raw materials and electrolyte and promote the insertion/extraction rate of Li^(+),thus enhancing the material stability and rate *** a result,the capacity retention rate is 96.9%after 200 cycles under ***,the capacities are 1.7.5,1.9.5,1.1.1.and58.3 mAh·g^(-1.at 1.,2C,5C and 1.C,implying a superior fast charging *** exceptional performance can be ascribed to both the increased conductivity and enhanced structural stability of the cathode ***'s more,based on the investigation of ion insertion/extraction behavior in electrode materials and the ion migration kinetics in the electrolyte,this study suggests that coating Li-rich Mn-based materials with Na_(2)WO_(4)can be a promising strategy to improve their performance in LIBs.

关键词： Li-ion battery Coating Rate performance Li_(1.2)Ni_(0.1.)Co_(0.1.)Mn_(0.54)O_(2) Reaction kinetics

Mitigating growth-stress tradeoffs via elevated TOR signaling in rice

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Molecular Plant 2024年第2期17卷 240-257页

作者： Wei Li Jiaqi Liu Zeqi Li Ruiqiang Ye Wenzhen Chen Yuqing Huang Yue Yuan Yi Zhang Huayi Hu Peng Zheng Zhongming Fang Zeng Tao Shiyong Song Ronghui Pan jian Zhang Jumim {1. Jen Sheen Hao Du State Key Laboratory of Rice Biology College of Agriculture and BiotechnologyZhejiang UniversityYu-Hang-Tang Road No.866Hangzhou 310058China ZJU-Hangzhou Global Scientific and Technological Innovation Center Zhejiang UniversityHangzhou 311215China Hainan Institute of Zhe{1.g university Sanya 572025China National Key Laboratory of Plant Molecular Genetics CASCenter for Excellence in Molecular Plant SciencesShanghai lnstitute of Plant Physiology and EcologyChineseAcademy of SciencesShanghai 200032China Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region(Ministry of Education) College of Agricultural SciencesGuizhouUniversityGuiyang 550025China State Key Laboratory of Rice Biology and Breeding China National Rice Research InstituteHangzhou 311400China Department of Molecular Biology and Center for Computational and Integrative Biology Massachusetts General Hospitaland Department of GeneticsHarvard Medical SchoolBostonMA02114USA

Rice production accounts for approximately half of the freshwater resources utilized in agricul{1.re,result-ing in greenhouse gas emissions such as methane(CH4)from flooded paddy *** address this chal-lenge,environmentally friendly and cost-effective water-saving techniques have become widely adopted in rice ***,the implementation of water-saving treatments(WsTs)in paddy-field rice has been associated with a substantial yield loss of up to 50%as well as a reduction in nitrogen use efficiency(NUE).In this s{1.dy,we discovered that the target of rapamycin(TOR)signaling pathway is compromised in rice under *** profiling-coupled transcriptome sequencing(polysome-seq)analysis unveiled a substantial reduction in global translation in response to WST associated with the downregulation of TOR ***,biochemical,and genetic analyses revealed new insights into the impact of the positive TOR-S6K-RPS6 and negative TOR-MAF1.modules on translation repression under ***,ammonium exhibited a greater ability to alleviate growth constraints under WsT by enhancing TOR signaling,which simultaneously promoted uptake and utilization of ammonium and nitrogen *** further demonstrated that TOR modulates the ammonium transporter AMT1.1.as well as the amino acid permease APP1.and dipeptide transporter NPF7.3 at the translational level through the 5'untranslated ***,these findings reveal that enhancing TOR signaling could mitigate rice yield penalty due to WST by regulating the processes involved in protein synthesis and *** s{1.dy will contribute to the breeding of new rice varieties with increased water and fertilizer utilization efficiency.

关键词： target of rapamycin TOR water-saving rice low-carbon agriculture drought nitrogen use efficiency NUE

The First Isochronous Mass Measurements at CSRe

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原子核物理评论 2009年第S1期26卷 185-189页

作者： tu Xiao-lin1.2, XU Hu-shan1. , WANG Meng1. XIA Jia-wen1. MAO Rui-shi1. YUAN You-jin1. HU Zheng-guo1. LIU Yong1. ZHANG Hong-bin1. ZANG Yong-dong1.2, ZHAO Tie-cheng1. ZHANG Xue-ying1. FU Fen1. YANG {1.-cheng1. MAO Li-jun1. XIAO Chen1.2, XIAO Guo-qing1. ZHAO Hong-wei1. ZHAN Wen-long1.1.Institute of Modern Physics, Chinese Academy of sciences, Lanzhou 730000, china 2 Graduate school of Chinese Academy of sciences, Beijing 1.0049, china) Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China Graduate school of Chinese Academy of {1.s Beijing 100049China Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China

With the commissioning of the Cooler Storage Ring at the Heavy Ion Research Facility in Lanzhou (HIRFL-CSR),a pilot experiment operating the CSRe in isochronous mode to test the power of HIRFL-CSR for measuring the mass of the short-lived nucleus was performed in December of 2007. The fragments with A/q = 2 of 36Ar were injected into CSRe and their revolution frequencies were measured with a fast time pick-up detector with a thin foil in the circulating path of the ions. The preliminary result is presented. The result shows the potential of CSRe for mass measurements of short-lived nuclei.

关键词： radiotive ion beam mass time-of-flight HIRFL-CSR

Projected near-surface wind speed and wind energy over Central Asia using dynamical downscaling with bias-corrected global climate models

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Advances in Climate Change Research 2024年第4期15卷 669-679页

作者： Jin-Lin ZHA Ting CHUAN Yuan QIU jian WU De-Ming ZHAO Wen-Xuan FAN Yan-{1. LYU Hui-Ping jianG Kai-Qiang DENG Miguel ANDRES-MARTIN Cesar AZORIN-MOLINA Deliang CHEN Key Laboratory of Atmospheric environment and Processes in the Boundary Layer over the Low-Lati{1.de Plateau Region Department of Atmospheric ScienceYunnan UniversityKunming 650091China Key Laboratory of Regional Climate and environment for Temperate East Asia Institute of Atmospheric Physics Chinese Academy of SciencesBeijing 100029China Center for Energy&environmental Policy Research Beijing Institute of Technology Beijing 100081China Key Laboratory of Regional Sustainable Development Modeling Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101China International Research Center of Big Data for Sustainable Development Goals Beijing 100094China school of Atmospheric {1.s Sun Yat-sen Universityand Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai)Zhuhai 519082China Centro de Investigaciones Sobre Desertificacion Consejo Superior de Investigaciones Cientificas(CIDECSIC-UV-Generalitat Valenciana)ClimateAtmosphere and Ocean Laboratory(Climatoc-Lab)Moncada 46113Spain Regional Climate Group.Deparment of Earth sciences University of GothenburgGothenburg 40530Sweden

Wind energy development in Central Asia can help alleviate drought and fragile ***,current studies mainly used the global climate models(GCMs)to project wind speed and *** simulated biases in GCMs remain prominent,which induce a large uncertainty in the projected *** reduce the uncertainties of projected near-surface wind speed(NSW)and better serve the wind energy development in Central Asia,the Weather Research and Forecasting(WRF)model with bias-corrected GCMs was *** with the outputs of GCMs,dynamical downscaling acquired using the WRF model can better capture the high-and low-value centres of NSWS,especially those of Central Asia's ***,the simulated NSWS bias was also *** future changes in wind speed and wind energy,under the Representative Concentration Pathway 4.5(RCP4.5)scenario,NSWS during 2031.2050 is projected to decrease compared with that in *** magnitude of NSwS reduction during 2031.2050 willreach 0.1.m s^(-1..and the maximum reduction is projected to occur over the central and western regions(>0.2 m s^(-1.).Furthermore,future wind power density(WPD)can reveal nonstationarity and strong volatility,although a downward trend is expected during *** addition,the higher frequency of wind speeds at the turbine hub height exceeding 3.0 m s^(-1.can render the plain regions more suitable for wind energy development than the mountains from 2031.to *** study can serve as a guide in gaining insights into future changes in wind energy across Central Asia and provide a scientific basis for decision makers in the formulation of policies for addressing climate change.

关键词： Near-surface wind speed Wind power density Dynamical downscaling Central Asia WRF

A human-specific insertion promotes cell proliferation and migration by enhancing TBC1.8B expression

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science{1.(Life sciences) 2024年第4期67卷 765-777页

作者： Hui Zhao Lin-Lin Liu jian Sun Lian Jin Hai-Bing Xie jian-Bo Li Hui Xu Dong-Dong Wu Xiao-Lin Zhuang Min-Sheng Peng Ya-jun Guo Wei-Zhu Qian Newton OOtecko Wei-Jie Sun Liang-Hu Qu Jie He Zhao-Li Chen Rong Liu Ce-Shi Chen Ya-Ping Zhang State Key Laboratory for Conservation and Utilization of Bio-resource School of Life SciencesSchool of Ecology and Environmental ScienceYunnan UniversityKunming 650091China school of Forensic Medicine Kunming Medical UniversityKunming 650500China Academy of Biomedical Engineering Kunming Medical UniversityKunming 650500China The Third Affiliated Hospital Kunming Medical UniversityKunming 650118China Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of sciences and Yunnan Province Kunming Institute of ZoologyChinese Academy of SciencesKunming 650201China State Key Laboratory of Genetic resources and Evolution Yunnan Laboratory of Molecular Biology of Domestic AnimalsKunming Institute of ZoologyChinese Academy of SciencesKunming 650201China The Key Laboratory of Gene Engineering of the Ministry of Education State Key Laboratory for BiocontrolSun Yat-sen UniversityGuangzhou 510275China National Engineering Research Center for Antibody Medicine and Shanghai Key Laboratory of Cell Engineering and Antibody Shanghai 201203China Department of Thoracic Surgery Cancer Institute and HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100730China

Human-specific insertions play important roles in human phenotypes and *** we reported a 446-bp insertion(Insert-446)in intron 1. of the TBC1.8B gene,located on chromosome X,and traced its origin to a portion of intron 6 of the EBF1.gene on chromosome ***,Insert-446 was present in the human Neanderthal and Denisovans genomes,and was fixed in humans after human-chimpanzee *** have demonstrated that Insert-446 acts as an enhancer through binding transcript factors that promotes a higher expression of human TBC1.8B gene as compared with orthologs in *** addition,over-expression TBC1.8B promoted cell proliferation and migration through“a dual finger”catalytic mechanism(Arg538 and Gln573)in the TBC domain in vitro and knockdown of TBC1.8B attenuated tumorigenesis in *** of Insert-446 prevented cell proliferation and migration in cancer and {1. *** results reveal that the human-specific Insert-446 promotes cell proliferation and migration by upregulating the expression of TBC1.8B *** findings provide a significant insight into the effects of human-specific insertions on evolution.

关键词： human-specific insertion enhancer gene expression cell proliferation and migration

云南省金沙江流域生态环境建设的问题与对策研究——长江上游生态屏障建设重点地区调查报告之一

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西南师范大学学报（自然科学版） 2003年第3期28卷 487-491页

作者：杨庆媛汪军王锡桐王建文贺廷荣起春联西南师范大学资源环境科学学院重庆400715 西南农业大学经济贸易学院重庆400716 楚雄州水利局水土保持办公室云南楚雄675000 牟定县水电局水土保持办公室云南牟定675500

生态环境保护和建设是我国西部大开发的重要战略之一,云南省金沙江流域是长江上游生态脆弱地区,也是生态环境保护和建设的重点地区.在实地调研的基础上分析云南省金沙江流域地区的生态环境状况,探讨该区域生态环境建设中存在的主要问题... 详细信息

生态环境保护和建设是我国西部大开发的重要战略之一,云南省金沙江流域是长江上游生态脆弱地区,也是生态环境保护和建设的重点地区.在实地调研的基础上分析云南省金沙江流域地区的生态环境状况,探讨该区域生态环境建设中存在的主要问题,并提出了进一步加强该地区生态环境建设的对策建议.

关键词：云南金沙江流域生态环境建设长江上游生态环境保护生态屏障建设对策