检索结果-南通市图书馆

Ultra-homogeneous Cu_(2-x)Se nanoparticles as near-infraredⅡplasmonic phototheranstics for photothermal/chemodynamic synergistic therapy of liver cancer

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Particuology 2023年第5期76卷 23-31页

作者： Bei Li Jing Li Yi Fu xiwen Ye Maodi Xie Lei Feng Xiaoya Niu Zhen You Division of Biliary Surgery Department of General SurgeryWest China HospitalSichuan UniversityChengdu610041China Research Center for Biliary Diseases West China HospitalSichuan UniversityChengdu610041China Department of Operating Room West China Hospital of Sichuan UniversityChengdu610041China Department of Physiology and Pathophysiology School of Basic Medical SciencesPeking UniversityBeijing100191China West China-Washington Mitochondria and Metabolism Center West China Hospital of Sichuan UniversityChengdu610041China

Laser mediated photothermal/chemodynamic co-therapy is widely applied for anti-cancer treatment due to its good therapeutic ***,the laser wavelength for effectively targeting deep tumor tissues can decide whether or not it is a key premise of irradiation *** this study,a super-homogenous and highly dispersive spherical nanoparticle Cu_(2-x)Se was prepared,which displayed a strong surface plasmon resonance(SPR)peak in the near-infrared region(NIR)-Ⅱand high Fenton catalytic *** results of in vitro experiments showed that Cu_(2-x)Se nanoparticles exhibited high photothermal conversion efficiency under the excitation of NIR-Ⅱlaser irradiation,which significantly improved its ability to produce *** a tumor-bearing mouse model,the combination of Cu_(2-x)Se and photothermal/chemodynamic co-therapy guided by the real-time photoacoustic imaging in the NIR-Ⅱcould effectively inhibit tumor growth and exhibit good in vivo/in vitro *** summary,this Cu_(2-x)Se nanoparticle-based NIR-Ⅱlaser-mediated photothermal/chemodynamic co-therapy strategy is expected to provide a new option for the diagnosis and treatment of liver cancer.

关键词： NIR-Ⅱ Cu_(2-x)Se Photothermal therapy Chemodynamic therapy Liver cancer

Identification of potential prognostic microRNA biomarkers for predicting survival in patients with hepatocellular carcinoma

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Cancer Biology & Medicine 2018年第S1期15卷 1-2页

作者： xiwen Liao Tao Peng The First Affiliated Hospital of Guangxi Medical University NanningChina

Objective:The aim of this study was to identify potential prognostic microRNA(miRNA)biomarkers for hepatocellular carcinoma(HCC)along with prognosis prediction based on a dataset from The Cancer Genome Atlas(TCGA).Met... 详细信息

关键词： Identification microRNA carcinoma

Tolerance to Zn deficiency and P-Zn interaction in wheat seedlings cultured in chelator-buffered solutions

在线全文

学校读者我要写书评

暂无评论

Journal of Arid Land 2011年第3期3卷 206-213页

作者： WenXuan MAI XiaoHong TIAN Willam Jeffery GALE xiwen YANG XinChun LU College of Resources and Environment Northwest A＆F University Yangling 712100 China Xinjiang Institute of Ecology and Geography Chinese Academy of Sciences Urumqi 830011 China Graduate University of Chinese Academy of Sciences Beijing 100049 China

Zinc deficiency is a common constraint for wheat production in the regions with limited precipitation,particularly in the regions with high levels of available phosphate （P） in *** experiments were conducted using chelator-buffered nutrient solutions to characterize differences in tolerance to Zn deficiency among three winter wheat （Triticum aestivum L）.genotypes and to investigate the relationship between P and Zn nutrition in wheat *** indices,Zn efficiency,relative shoot-to-root ratio,total Zn uptake in shoot,and shoot dry weight were used to compare the tolerance to Zn deficiency among three wheat *** results indicated that the four indices could be used in breeding selection for Zn uptake-efficient *** genotype H6712 was the most tolerant to Zn deficient,followed by M19,and then ***,H6712 had the highest Zn uptake efficiency among the three *** addition of P to the growth medium increased Zn uptake and translocation from roots to *** Zn content of the wheat plant was 43% higher with 0.6 mmol/L P treatment than that of control with 0 mmol /L P *** Zn translocation ratios from roots to shoots were increased by 16% and 26% with 0.6 mmol/L P treatment and 3 mmol/L P treatment,respectively,compared with 0 mmol/L P *** contrast,high Zn concentrations in the growth medium inhibited P translocation from roots to shoots,but the inhibitive effects were not ***-six percent of P taken up by wheat plants was translocated to the wheat shoots at 0 μmol/L Zn treatment,while the percent was 60% at 3 μmol/L Zn *** result may be due to the fact that the wheat plants need more P than Zn.

关键词： chelator-buffered solution tolerance to Zn deficiency P and Zn interaction

DNA barcoding in herbal medicine: Retrospective and prospective

在线全文

学校读者我要写书评

暂无评论

Journal of Pharmaceutical Analysis 2023年第5期13卷 431-441页

作者： Shilin Chen Xianmei Yin Jianping Han Wei Sun Hui Yao Jingyuan Song xiwen Li Institute of Herbgenomics Chengdu University of Traditional Chinese MedicineChengdu611137China Key Laboratoryof Beijing for Identification and Safety Evaluation of Chinese Medicine Instituteof Chinese Materia MedicaChina Academyof Chinese Medical SciencesBeijing100700China State Key Laboratory of Southwestern Chinese Medicine Resources Chengdu University of Traditional Chinese MedicineChengdu611137China Institute of Medicinal Plant Development Chinese Academy of Medical Sciences&Peking Union Medical CollegeBeijing100193China

DNA barcoding has been widely used for herb identification in recent decades,enabling safety and innovation in the field of herbal *** this article,we summarize recent progress in DNA bar-coding for herbal medicine to provide ideas for the further development and application of this *** importantly,the standard DNA barcode has been extended in two ***,while conventional DNA barcodes have been widely promoted for their versatility in the identification of fresh or well-preserved samples,super-barcodes based on plastid genomes have rapidly developed and have shown advantages in species identification at low taxonomic ***,mini-barcodes are attractive because they perform better in cases of degraded DNA from herbal *** addition,some mo-lecular techniques,such as high-throughput sequencing and isothermal amplification,are combined with DNA barcodes for species identification,which has expanded the applications of herb identification based on DNA barcoding and brought about the post-DNA-barcoding ***,standard and high-species coverage DNA barcode reference libraries have been constructed to provide reference se-quences for species identification,which increases the accuracy and credibility of species discrimination based on DNA *** summary,DNA barcoding should play a key role in the quality control of traditional herbal medicine and in the international herb trade.

关键词： Herbal identification Super-barcode Mini-barcode Meta-barcoding Cutting-edgebarcoding

Extraterrestrial artificial photosynthetic materials for in-situ resource utilization

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

National Science Review 2021年第8期8卷 108-133页

作者： Liuqing Yang Ce Zhang xiwen Yu Yingfang Yao Zhaosheng Li Congping Wu Wei Yao Zhigang Zou Eco-Materials and Renewable Energy Research Center(ERERC) Jiangsu Key Laboratory for Nano TechnologyNational Laboratory of Solid State MicrostructuresSchool of PhysicsNanjing University Collaborative Innovation Center of Advanced Microstructures College of Engineering and Applied SciencesNanjing University Kunshan Innovation Institute of Nanjing University Macau Institute of Systems Engineering Macau University of Science and Technology School of Science and Engineering The Chinese University of Hong Kong Qian Xuesen Laboratory of Space Technology China Academy of Space Technology Wuhan National Laboratory for Optoelectronics Huazhong University of Science and Technology

Aerospace milestones in human history, including returning to the moon and manned Martian missions,have been implemented in recent years. Space exploration has become one of the global common goals, and to ensure the survival and development of human beings in the extraterrestrial extreme environment has been becoming the basic ability and technology of manned space exploration. For the purpose of fulfilling the goal of extraterrestrial survival, researchers in Nanjing University and the China Academy of Space Technology proposed extraterrestrial artificial photosynthesis(EAP) technology. By simulating the natural photosynthesis of green plants on the Earth, EAP converts CO/HO into fuel and Oin an in-situ,accelerated and controllable manner by using waste COin the confined space of spacecraft, or abundant COresources in extraterrestrial celestial environments, e.g. Mars. Thus, the material loading of manned spacecraft can be greatly reduced to support affordable and sustainable deep space exploration. In this paper, EAP technology is compared with existing methods of converting CO/HO into fuel and Oin the aerospace field, especially the Sabatier method and Bosch reduction method. The research progress of possible EAP materials for in-situ utilization of extraterrestrial resources are also discussed in depth. Finally,this review lists the challenges that the EAP process may encounter, which need to be focused on for future implementation and application. We expect to deepen the understanding of artificial photosynthetic materials and technologies, and aim to strongly support the development of manned spaceflight.

关键词： solar energy extraterrestrial survival artificial photosynthesis CO_2 reduction oxygen evolution

Biological composite fibers with extraordinary mechanical strength and toughness mediated by multiple intermolecular interacting networks

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Nano Research 2022年第10期15卷 9192-9198页

作者： Sikang Wan Wenhao Cheng Jingjing Li Fan Wang xiwen Xing Jing Sun Hongjie Zhang Kai Liu State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China University of Science and Technology of China Hefei 230026China Department of Biotechnology College of Life Science and TechnologyJinan UniversityGuangzhou 510632China Institute of Organic Chemistry Ulm UniversityAlbert-Einstein-Allee 1189081 UlmGermany Department of Chemistry Tsinghua UniversityBeijing 100084China

Numerous strategies involving multiple cross-linking networks have been applied for fabricating robust *** by this,the development of mechanically strong and tough biological fibers by the incorporation of intermolecular linking networks is becoming ***,we present a versatile strategy for the fabrication of protein-saccharide composite fibers through protein-initiated double interacting *** types of lysine-rich bioengineered proteins were introduced and the present multiple cross-linking interactions including electrostatic forces and covalent bonds significantly enhanced the mechanical properties of as-obtained composite *** stark contrast to pristine saccharide or other polymer fibers,the as-obtained composite fibers exhibited outstanding mechanical performance,showing a breaking strength of~768 MPa,Young’s modulus of~24 GPa,and toughness of~69 MJ∙m^(–3),***,this established approach has great potentials to fabricate new generation renewable biological fibers with high performance.

关键词： biomaterial composite fiber protein intermolecular networks mechanical performance

Single-wall carbon nanotube-containing cathode interfacial materials for high performance organic solar cells

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China Chemistry 2021年第4期64卷 565-575页

作者： Fei Pan Song Bai Tianhao Liu Dianyong Tang Xian Wei xiwen Chen Menglan Lv Yongfang Li School of Chemical Engineering Guizhou Institute of TechnologyGuiyang 550003China Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing 100190China Chongqing Engineering Laboratory of Targeted and Innovative Therapeutics International Academy of Targeted Therapeutics and InnovationChongqing University of Arts and SciencesChongqing 402160China Guangzhou Polyforte Chemical Technology Co.LTD Guangzhou 510520China School of Chemical Science University of Chinese Academy of SciencesBeijing 100049China School of Chemistry and Chemical Engineering Guizhou UniversityGuiyang 550025China

Water/alcohol soluble cathode interfacial materials(CIMs)are playing important roles in optoelectronic devices such as organic light emitting diodes,perovskite solar cells and organic solar cells(OSCs).Herein,n-doped solution-processable single-wall carbon nanotubes(SWCNTs)-containing CIMs for OSCs are developed by dispersing SWCNTs to the typical CIMs perylene diimide(PDI)derivatives PDIN and *** Raman and X-ray photoelectron spectroscopy(XPS)measurement results illustrate the ndoped behavior of SWCNTs by PDIN/PDINO in the blend *** blended and n-doped SWCNTs can tune the work function and enhance the conductivity of the PDI-derivative/SWCNT(PDI-CNT)composite CIMs,and the composite CIMs can regulate and down-shift the work function of cathode,reduce the charge recombination,improve the charge extraction rate and enhance photovoltaic performance of the *** power conversion efficiency(PCE)of 17.1%and 17.7%are obtained for the OSCs based on PM6:Y6 and ternary PM6:Y6:PC_(71) BM respectively with the PDI-CNTcomposites *** results indicate that the ndoped SWCNT-containing composites,like other n-doped nanomaterials such as zero dimensional fullerenes and two dimensional graphenes,are excellent CIMs for OSCs and could find potential applications in other optoelectronic devices.

关键词： organic solar cells cathode interfacial materials n-doped single wall carbon nanotubes silver electrode

Geochronology and Geochemistry of Late Devonian I- and A-Type Granites from the Xing’an Block,NE China:Implications for Slab Break-off during Subduction of the Hegenshan-Heihe Ocean

在线全文

学校读者我要写书评

暂无评论

Journal of Earth Science 2022年第1期33卷 150-160页

作者： Zheng Ji Wenchun Ge Hao Yang Yanlong Zhang Yu Dong Junhui Bi xiwen Liu College of Earth Sciences Jilin UniversityChangchun 130061China Tianjin Center China Geological SurveyTianjin 300170China Jilin Provincial Water Resources and Hydropower Consultative Company Changchun 130021China

We present detailed geochronological,geochemical,and zircon Hf isotopic data for Late Paleozoic granitic rocks from Handagai and Zhonghe plutons in the Xing’an Block,NE China,aiming to provide constraints on their origin and tectonic *** zircon U-Pb ages indicate they were formed in the Late Devonian(ca.379 Ma) immediately after a striking 50 Ma magmatic lull(ca.430-380 Ma) in the Xing ’ an *** and geochemical features suggest that the Handagai monzogranites and Zhonghe alkali-feldspar granites are I- and A-type granites,respectively,although both of them have high-K calc-alkaline features and positive zircon ε_(Hf)(t) values(+3.47 to +10.77).We infer that the Handagai monzogranites were produced by partial melting of juvenile basaltic crustal materials under a pressure of duction-related extensional *** break-off of the Hegenshan-Heihe oceanic plate may account for the subduction-related extensional setting,as well as the transformation of arc magmatism from the Early-Middle Devonian lull to the Late Devonian-Early Carboniferous flare-up in the Xing’an Block.

关键词： Late Devonian granitoids geochemistry slab break-off Hegenshan-Heihe Ocean Xing’an Block

Feature Enhancement Network for Object Detection in Optical Remote Sensing Images

在线全文

学校读者我要写书评

暂无评论

Journal of Remote Sensing 2021年第1期2021卷 197-210页

作者： Gong Cheng Chunbo Lang Maoxiong Wu Xingxing Xie xiwen Yao Junwei Han School of Automation Northwestern Polytechnical UniversityXi’an 710129China

Automatic and robust object detection in remote sensing images is of vital significance in real-world applications such as land resource management and disaster ***,poor performance arises when the state-of-the-art natural image detection algorithms are directly applied to remote sensing images,which largely results from the variations in object scale,aspect ratio,indistinguishable object appearances,and complex background *** this paper,we propose a novel Feature Enhancement Network(FENet)for object detection in optical remote sensing images,which consists of a dual Attention Feature Enhancement(DAFE)module and a Context Feature Enhancement(CFE)***,the DAFE module is introduced to highlight the network to focus on the distinctive features of the objects of interest and suppress useless ones by jointly recalibrating the spatial and channel feature *** CFE module is designed to capture global context cues and selectively strengthen class-aware features by leveraging image-level contextual information that indicates the presence or absence of the object *** this end,we employ a context encoding loss to regularize the model training which promotes the object detector to understand the scene better and narrows the probable object categories in *** achieve our proposed FENet by unifying DAFE and CFE into the framework of Faster *** the experiments,we evaluate our proposed method on two large-scale remote sensing image object detection datasets including DIOR and DOTA and demonstrate its effectiveness compared with the baseline methods.

关键词： Remote image disaster