检索结果-南通市图书馆

Journal of Materials Science & Technology 2024年第2期169卷 105-114页

作者： Deqing He chunyu zhu Yutao Huo Zhonghao Rao School of Energy and Environmental Engineering Hebei University of TechnologyTianjin 300401China Hebei Key Laboratory of Thermal Science and Energy Clean Utilization Hebei University of TechnologyTianjin 300401China School of Low-carbon Energy and Power Engineering China University of Mining and TechnologyXuzhou 221116China

The sluggish redox reaction kinetics of lithium polysulfides(LiPSs)are considered the main obstacle to the commercial application of lithium-sulfur(Li-S)*** accelerate the conversion by catalysis and inhibit the shuttling of soluble LiPSs in Li-S batteries,a solution is proposed in this *** solution involves fabrication of N,S co-doped carbon coated In_(2)O_(3)/In_(2)S_(3)heterostructure(In_(2)O_(3)-In_(2)S_(3)@NSC)as a multifunctional host material for the *** In_(2)O_(3)-In_(2)S_(3)@NSC composite can reduce the Gibbs free energy for the conversion reactions of LiPSs,which results in superior *** synergy between different components in In_(2)O_(3)-In_(2)S_(3)@NSC and the unique 3D structure facilitate ion and electron transport in Li-S *** In_(2)O_(3)-In_(2)S_(3)@NSC/Li 2 S 6 cathode exhibits excellent rate capacity,with a capacity of 599 mAh g−1 at 5.5 C,and good cycle stability,with a capacity of 436 mAh g^(−1)after 1000 cycles at 1 ***,this study proposes a promising solution to improve the energy storage properties of Li-S batteries,which could potentially facilitate the commercialization of Li-S batteries.

关键词： Li-S battery Multifunctional host material Synergy Heterostructures Energy storage properties

MnO/N—C anode materials for lithium-ion batteries prepared by cotton-templated combustion synthesis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Green Energy & Environment 2017年第4期2卷 377-386页

作者： Cheng-Gong Han chunyu zhu Yoshitaka Aoki Hiroki Habazaki Tomohiro Akiyama Faculty of Engineering Hokkaido University

We herein report a facile one-pot synthesis of MnO/N-doped carbon(N—C) composites via a sustainable cotton-template glycineenitrate combustion synthesis to yield superior anode materials for Li ion batteries. MnO nanoparticles with several nanometers were well-embedded in a porous N-doped carbon matrix. It displays the unique characteristics, including the shortened Li^+-ion transport path, increased contact areas with the electrolyte solution, inhibited volume changes and agglomeration of nanoparticles, as well as good conductivity and structural stability during the cycling process, thereby benefiting the superior cycling performance and rate capability. This favorable electrochemical performance of obtained MnO/N—C composites via a one-pot biomass-templated glycine/nitrate combustion synthesis renders the suitability as anode materials for Li-ion batteries.

关键词： Biomass Cotton Manganese oxide Lithium ion battery Porous carbon

Combustion synthesis of YAG:Ce phosphors via the thermite reaction of aluminum

在线全文

学校读者我要写书评

暂无评论

Journal of Rare Earths 2018年第3期36卷 248-256页

作者： Junpei Ohyama chunyu zhu Genki Saito Miki Haga Takahiro Nomura Norihito Sakaguchi Tomohiro Akiyama Center for Advanced Research of Energy and Materials Hokkaido UniversityKita 13 Nishi 8KitakuSapporo 060-8628Japan Division of Applied Chemistry&Frontier Chemistry Center Faculty of EngineeringHokkaido University5apporoHokkaido 060-8628Japan Graduate School of Chemical Sciences and Engineering Hokkaido University SapporoHokkaido 060-8628Japan

Cerium-doped yttrium aluminum garnet（YAG：Ce） as a yellow phosphor for white light-emitting diodes（LEDs） was synthesized via a facile combustion method using Y2 O3, CeO2, Al2 O3, Al,and NaClO4 as raw materials. The combustion synthesis approach utilizes the strong exothermic oxidation of aluminum to realize a self-sustaining reaction. In this study, we investigated the effects of the ratios of Al2 O3 to AI,fluxes, and coprecipitated materials as raw materials on the luminescence properties of the synthesized YAG：Ce phosphors. When the amount of Al2 O3 x is varied, the combustion reaction proceeds at x ≤ 1.8,with x = 1.725 being the optimum condition for producing a high-performance product. When 5 wt%BaF2 is added, the luminescence intensity is significantly improved owing to a decrease of YAP（YAlO3）formation with improved uniformity. However, the addition of CaF2 and NaF does not improve the luminescence properties. To suppress the segregation of CeO2, we used the coprecipitated material Y2 O3-CeO2 as a raw material. Unlike with separate addition of Y2 O3 and CeO2, Ce ions are uniformly distributed in the coprecipitated material, resulting in improved luminescence properties. The combination of BaF2 and coprecipitated material significantly improves the internal quantum efficiency to83.0%, which is close to that of commercial phosphors.

关键词： Phosphor Yttrium aluminum garnet Combustion synthesis Flux Coprecipitated material Rare earths

Hyperspectral and multispectral remote sensing image fusion using SwinGAN with joint adaptive spatial-spectral gradient loss function

在线全文

学校读者我要写书评

暂无评论

International Journal of Digital Earth 2023年第1期16卷 3580-3600页

作者： chunyu zhu Shangqi Deng Jiaxin Li Ying Zhang Liwei Gong Liangbo Gao Na Ta Shengbo Chen Qiong Wu College of Geo-Exploration Science and Technology Jilin UniversityChangchunPeople’s Republic of China School of Mathematical Sciences University of Electronic Science and Technology of Chin1ChengduPeople’s Republic of China Key Laboratory of Computational Optical Imaging Technology Aerospace Information Research InstituteChinese Academy of SciencesBeijingPeople’s Republic of China College of Resources and Environment University of Chinese Academy of SciencesBeijingPeople’s Republic of China

Hyperspectral remote sensing image(HSI)fusion with multispectral remote sensing images(MSI)improves data ***,current fusion algorithms focus on local information and overlook long-range *** parameter of network tuning prioritizes global optimization,neglecting spatial and spectral constraints,and limiting spatial and spectral reconstruction *** study introduces SwinGAN,a fusion network combining Swin Transformer,CNN,and GAN ***’s generator employs a detail injection framework to separately extract HSI and MSI features,fusing them to generate spatial *** residuals are injected into the supersampled HSI to produce thefinal image,while a pure CNN architecture acts as the discriminator,enhancing the fusion ***,we introduce a new adaptive loss function that improves image fusion *** loss function uses L1 loss as the content loss,and spatial and spectral gradient loss functions are introduced to improve the spatial representation and spectralfidelity of the fused *** experimental results on several datasets demonstrate that SwinGAN outperforms current popular algorithms in both spatial and spectral reconstruction *** ablation experiments also demonstrate the rationality of the various components of the proposed loss function.

关键词： SwinGAN HSI MSI image fusion spatial gradient loss spectral gradient loss

Great Supply Shortage of High-Grade Precipitation-Process Silica White

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

China Chemical Reporter 2008年第7期19卷 19-19页

作者： zhu chunyu

Production technology tends to be well-developed China’s process technology for the produc-tion of precipitation-process silica white has made great progress in recent *** con-centrated sulfuric acid process has repl... 详细信息

关键词： Precipitation rubber silica replaced dilute tires

Current Situation and Prospect of White Carbon Black Industry in China

在线全文

学校读者我要写书评

暂无评论

中国橡胶 2011年第12期27卷 22-25页

作者： zhu chunyu

*** of Market Operation in 2010 Year 2010 is the ending year of the "11th Five-Year Plan".Under the effect of a series of central government policies including coping with the international financial crisis

关键词： Co 2010 Current Situation and Prospect of White Carbon Black Industry in China

CD147 facilitates cisplatin resistance in ovarian cancer through FOXM1 degradation inhibition

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Genes & Diseases 2024年第5期11卷 122-125页

作者： Miao Wang Lin Chen Yu Wang Tian Fan chunyu zhu Zhixian Li Lei Mou Hong Yang Airong Qian Yu Li School of Life Sciences Northwestern Polytechnical UniversityXi’anShaanxi 710072China Xi’an Key Laboratory of Stem Cell and Regenerative Medicine Institute of Medical ResearchNorthwestern Polytechnical UniversityXi’anShaanxi 710072China Department of Oncology Air Force Medical CenterPLABeijing 100142China Department of Obstetrics and Gynecology The First Affiliated Hospital of Air Force Medical UniversityXi’anShaanxi 710032China

Currently,the major therapy for patients with ovarian cancer includes post-cytoreductive surgery followed by chemotherapy of carboplatin or cisplatin plus *** rise of drug resistance is a substantial factor in cancer recurrence and mortality among ovarian cancer patients receiving cisplatin ***147 is widely expressed in a variety of cancer tissues1 and recognized as a drug target for its antibody drug Licartin which has been approved by China’s National Medicines and Pharmaceutical Administration.2 Even though many studies reported that CD147 is involved in the cisplatin resistance of varieties of cancers,3 its mechanism remains *** this investigation,we uncovered a distinctive mechanism by which CD147 regulates cisplatin resistance through the proteasomal degradation of the transcription factor FOXM1,which is associated with DNA damage repair,in ovarian cancer *** results suggest that targeting CD147 may have therapeutic implications for increasing cisplatin efficiency in the management of ovarian cancer.

关键词： FOXM1 cisplatin CD147

A point mutation resulting in a 13 bp deletion in the coding sequence of Cldf leads to a GA-deficient dwarf phenotype in watermelon

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Horticulture Research 2019年第1期6卷 121-132页

作者： Chunhua Wei chunyu zhu Liping Yang Wei Zhao Rongxue Ma Hao Li Yong Zhang Jianxiang Ma Jianqiang Yang Xian Zhang State Key Laboratory of Crop Stress Biology in Arid Areas College of HorticultureNorthwest A&F UniversityYanglingShaanxi 712100China

The dwarf architecture is an important and valuable agronomic trait in watermelon breeding and has the potential to increase fruit yield and reduce labor cost in crop ***,the molecular basis for dwarfism in watermelon remains largely *** this study,a recessive dwarf allele(designated as Cldf(Citrullus lanatus dwarfism))was fine mapped in a 32.88 kb region on chromosome 09 using F2 segregation populations derived from reciprocal crossing of a normal line M08 and a dwarf line *** annotation of the corresponding region revealed that the Cla015407 gene encoding a gibberellin 3β-hydroxylase functions as the best possible candidate gene for *** analysis showed that the fourth polymorphism site(a G to A point mutation)at the 3′AG splice receptor site of the intron leads to a 13 bp deletion in the coding sequence of Cldf in dwarf line N21 and thus results in a truncated protein lacking the conserved domain for binding *** addition,the dwarf phenotype of Cldf could be rescued by exogenous GA3 *** analysis suggested that the small multigene family GA3ox(GA3 oxidase)in cucurbit species may originate from three ancient lineages in *** these data support the conclusion that Cldf is a GA-deficient mutant,which together with the cosegregated marker can be used for breeding new dwarf cultivars.

关键词： dwarf breeding cultivar

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

论环境法律规范的有效性

社会科学 2011年第2期 91-97页

作者：朱春玉中国社会科学院法学研究所博士后北京100720

环境法律规范的有效性研究对于理性地分析现行的环境保护法律,具有重要意义;也能建立一个理论分析的框架,用以解释很多在以往看似支离破碎、毫无关联的问题。现行环境法律原则存在的问题包括:目的原则(环境保护和经济发展的二元论)之间... 详细信息

环境法律规范的有效性研究对于理性地分析现行的环境保护法律,具有重要意义;也能建立一个理论分析的框架,用以解释很多在以往看似支离破碎、毫无关联的问题。现行环境法律原则存在的问题包括:目的原则(环境保护和经济发展的二元论)之间的抵触;结构性法律原则(环境正义)的缺失;(纯粹)意识形态性法律原则(例如人权原则)没有发挥其在环境保护中应有的作用。此外,还存在环境法律规则的漏洞,环境法律规则之间的抵触,以及环境法律原则与环境法律规则的抵触。达致环境法律规范的体系有效性,应重视法律原则的提炼,环境法律规范的统一和秩序,环境法律规则与原则的协调以及环境问题作为环境法研究起始点的设定。

关键词：法律规范环境法律规范法律原则法律规则有效性

在线全文

学校读者我要写书评

暂无评论

环境法学体系的重构

中州学刊 2010年第5期 96-99页

作者：朱春玉郑州大学学报编辑部河南郑州450001

环境法学体系研究需要科学的方法论。运用拉卡托斯的"科学研究纲领方法论",可以对我国环境法学理论进行理性、客观的分析与评价,对环境法学体系进行重构,将环境法学的基本假设、立法原则以及法律制度放到一个统一的逻辑体系内。拉卡托... 详细信息

环境法学体系研究需要科学的方法论。运用拉卡托斯的"科学研究纲领方法论",可以对我国环境法学理论进行理性、客观的分析与评价,对环境法学体系进行重构,将环境法学的基本假设、立法原则以及法律制度放到一个统一的逻辑体系内。拉卡托斯认为科学研究纲领包括坚韧的"硬核"(基本假设)、"保护带"(广阔的辅助假说)和"启发法"(解题方法)。环境法学的基本假设是环境正义;关于自然的权利问题、动物的权利问题、可持续发展、代际(内)环境正义等的理论是环境法学的"保护带";环境法学的"解题方法"是达致环境正义的进路。

关键词：环境法学体系方法论逻辑统一