检索结果-南通市图书馆

在线全文

学校读者我要写书评

暂无评论

碳金融协同监管的法律构造

海南金融 2024年第6期 13-23页

作者：胡宇婷康京涛西安财经大学法学院陕西西安710100

碳金融市场能否稳健运行攸关“双碳”目标实现。当前我国碳金融监管的制度框架不能满足碳市场现实需要,存在监管主体架构不合理、监管规范间衔接不适、监管工具选择单一、履约责任体系不健全等问题。为此,我国碳金融监管应以共同责任、... 详细信息

碳金融市场能否稳健运行攸关“双碳”目标实现。当前我国碳金融监管的制度框架不能满足碳市场现实需要,存在监管主体架构不合理、监管规范间衔接不适、监管工具选择单一、履约责任体系不健全等问题。为此,我国碳金融监管应以共同责任、绿色环保、风险预防与发展并行为法律原则,建立碳金融协同监管体制。监管主体方面,成立碳金融监管委员会,明确监管主体的职责、权限,构建协同高效的监管组织。监管规范方面,协调碳金融规范与政策、法律之间的关系,扩大监管覆盖面。监管工具方面,增强监管工具协同度,协同运用命令控制型手段与激励性监管手段。

关键词：碳金融协同监管金融监管监管体制低碳经济监管创新

一种基于低温共烧陶瓷技术的一分二功率分配器设计方法

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

化工自动化及仪表 2024年第2期51卷 192-198,364页

作者：胡雨婷侯明李小珍徐开心张杨昆明理工大学信息工程与自动化学院昆明学院信息工程学院

从小型化的要求出发,提出一种一分二等分功率分配器设计方法。以Wilkinson功率分配器结构为基础,将传统功率分配器中的直线型传输线改为螺旋线型传输线。采用低温共烧陶瓷(LTCC)技术进行小型化功率分配器设计,建模时利用立体叠层结构对... 详细信息

从小型化的要求出发,提出一种一分二等分功率分配器设计方法。以Wilkinson功率分配器结构为基础,将传统功率分配器中的直线型传输线改为螺旋线型传输线。采用低温共烧陶瓷(LTCC)技术进行小型化功率分配器设计,建模时利用立体叠层结构对功率分配器内部的传输线进行布局,内部不同金属层之间使用垂直通孔连接,使得该功率分配器尺寸与传统平面结构功率分配器相比大幅减小。在HFSS软件中完成三维模型建立与电磁仿真,并对设计完成的功率分配器进行加工测试,最终得到该功率分配器回波损耗优于19 dB,插入损耗优于3.5 dB,中心频率2.8 GHz处隔离度优于35 dB,具有较好的隔离度,满足一分二等分功率分配器的性能要求,并且LTCC功率分配器尺寸仅3.18 mm×1.58 mm×0.911 mm。

关键词：一分二等分功率分配器 LTCC 螺旋线结构回波损耗插入损耗中心频率隔离度

在线全文

学校读者我要写书评

暂无评论

湖北省优质稻适宜栽培期的区划研究

长江流域资源与环境 2024年第8期33卷 1821-1832页

作者：杨青青穆麒麟刘越胡玉婷刘洋旋严鹏陈龙周田小海黄永平长江大学农学院湖北荆州434025 荆州农业气象试验站湖北荆州434020 主要粮食作物产业化湖北省协同创新中心湖北荆州434025

湖北省优质稻灌浆期常在高温下完成,品质和产量显著降低。开展优质稻气候适宜性区划,规划优质稻在不同地区的合理灌浆期,是发展优质稻的一项基础工作。在前期研究基础上,以湖北省75个国家级气象观测站1991~2020年的逐日气象资料,采用5d... 详细信息

湖北省优质稻灌浆期常在高温下完成,品质和产量显著降低。开展优质稻气候适宜性区划,规划优质稻在不同地区的合理灌浆期,是发展优质稻的一项基础工作。在前期研究基础上,以湖北省75个国家级气象观测站1991~2020年的逐日气象资料,采用5d滑动平均法确定各地水稻灌浆期的高温、缓温和适温等3类适宜界限日期;以各地缓温和适温栽培期时长为主指标,采用模糊聚类统计方法完成湖北省不同区域优质稻适宜栽培期类型划分,并对不同区域影响优质稻的主要气象资源条件进行了比较分析。结果表明,不同区域适宜栽培期的季节分布和时间长短各不相同,湖北省全域上适于优质稻灌浆的时间普遍较短,是其发展优质稻的一个重大缺陷。湖北省优质稻适宜栽培期可分为4个区域,分别为鄂西山地短季优质稻区,鄂西北适温高光优质稻区,鄂中东高温秋短优质稻区和鄂东南高温秋长优质稻区。该区划图在地理上呈现出由东南向西北的鱼鳞状次第衔接分布。其中,前二区域适于和较适于优质稻。不同区域发展优质稻在气候上的差异,主要可以归结为气温及其适宜性栽培期限和日照时数及光热熵等参数的差异。总之,湖北省优质稻产业应将抗热避热和区域合理布局作为其技术发展的重点。

关键词：优质稻栽培期区划灌浆期气象学

Pyridine-regulated Sb@InSbS_(3)ultrafine nanoplates as high-capacity and long-cycle anodes for sodium-ion batteries

在线全文

学校读者我要写书评

暂无评论

Rare Metals 2024年第5期43卷 2080-2092页

作者： Jia-Ying Ren Xiang-Lin yu Chang-Miao Chen Xin-yu hu ting Yang Ming Zhang College of Materials Science and Engineering and College of Science Central South University of Forestry and TechnologyChangsha 410004China College of Semiconductors(College of Integrated Circuits) Changsha Semiconductor Technology and Application Innovation Research InstituteHunan UniversityChangsha 410082China

Sb-based materials exhibit considerable potential for sodium-ion storage owing to their high theoretica ***,the bulk properties of Sb-based materials always result in poor cycling and rate *** overcome these issues,pyridine-regulated Sb@InSbS_(3)ultrafine nanoplates loaded on reduced graphene oxides(Sb@InSbS_(3)@rGO)were designed and *** the synthesis process,pyridine was initially adopted to coordinate with In^(3+),and uniformly dispersed In_(2)S_(3)ultrafine nanoplates on reduced graphene oxide were generated after ***,partial In^(3+)was exchanged with Sb^(3+),and Sb@InSbS_(3)@rGO was obtained by using the subsequent annealing *** unique structure of Sb@InSbS_(3)@rGO effectively shortened the transfer path of sodium ions and electrons and provided a high *** the anode in sodium-ion batteries,the Sb@InSbS_(3)@rGO electrode demonstrated a significantly higher reversible capacity better stability(445 m Ah·g^(-1)at 0.1 A·g^(-1)after 200 cycles and 212 mAh·g^(-1)at 2 A·g^(-1)after 1200 cycles),and superior rate(210 mAh·g^(-1)at 6.4 A·g^(-1))than the electrode without pyridine(355 mAh·g-1at 0.1 A·g-1after 55 cycles and 109 mAh·g^(-1)at 2 A·g^(-1)after 770 cycles)Furthermore,full cells were assembled by using the Sb@InSbS_(3)@rGO as anode and Na_(3)V_(2)(PO_(4))_(3)as cathode which demonstrated good cycling and rate performances and exhibited promising application *** results indicate that adjusting the microstructure of electrode materials through coordination balance is A·good strategy for obtaining high-capacity,high-rate,and longcycle sodium storage performances.

关键词： Sodium-ion battery Sb-based anode material Pyridine coordination Reduced size nanostructure Half/full cell

Two-dimensional bimetallic selenium-containing metal-organic frameworks and their calcinated derivatives as electrocatalysts for overall water splitting

在线全文

学校读者我要写书评

暂无评论

Frontiers in Energy 2024年第3期18卷 378-389页

作者： Zhao-ting SHANG Tang-ming LI Bing-qian hu Min LIU Wang-ting LU Fan yu yun ZHENG Key Laboratory of Optoelectronic Chemical Materials and Devices of Ministry of Education College of Optoelectronic Materials and TechnologyJianghan UniversityWuhan 430056China Institute of New Energy Materials and Engineering School of Materials Science and EngineeringFuzhou UniversityFuzhou 350108China Department of Chemical Engineering University of WaterlooWaterlooOntario N2L 3G1Canada

The use of two-dimensional(2D)layered metal-organic frameworks(MOFs)as self-sacrificial templates has been proven to be a successful method to create high-efficiency Selenium(Se)-containing electrocatalysts for overall water ***,two strategies are then utilized to introduce Se element into the Co–Fe MOF,one being the etching of as-prepared MOF by SeO_(2) solution,and the other,the replacing of SCN−with SeCN−as the construction *** electrochemical activity of the pristine 2D MOF and their calcinated derivatives for catalyzing the hydrogen evolution reaction(HER)and oxygen evolution reaction(OER)is evaluated and further *** is found that the effect of introducing Se on improving electrochemical catalytic activity is significant for the HER ***,the calcinated derivative in the replacing method exhibits an overpotential of 235 mV for HER and 270 mV for OER at a current density of 10 mA/*** comparing the two methods of introducing Se element into MOF,similar electrocatalytic activity can be achieved on the their calcinated *** high electrochemical performance of 2D CoFe-MOF derivatives may be resulted from the unique 2D hierarchical porous structure and strong synergistic effect between different components in the material.

关键词： 2D MOF selenium(Se)-containing materials hydrogen evolution reaction(HER) oxygen evolution reaction(OER)

Changes in extreme high temperature warning indicators over China under different global warming levels

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

Science China Earth Sciences 2024年第6期67卷 1895-1909页

作者： yuxia ZHANG Ying SUN ting hu Chinese Academy of Meteorological Sciences Beijing 100081China National Climate Center Laboratory for Climate StudiesChina Meteorological AdministrationBeijing 100081China

High temperature warning indicators play a pivotal role in meteorological departments,serving as crucial criteria for issuing warnings that guide both social production and daily *** their importance,limited studies have explored the relationship between different global warming levels and changes in high temperature warning *** this study,we analyze data from 2,419 meteorological stations over China and utilize the Coupled Model Intercomparison Project Phase 6(CMIP6)models to examine historical changes in high temperature warning indicators used by the China Meteorological *** evaluate model performance and estimate future changes in these indicators using an annual cycle bias correction *** results indicate that since 1961,the number of high temperature days(TX35d and TX40d)and length of season(TX40d and TX40l)with daily maximum temperature reaching or exceeding 35℃ and 40℃ have increased over *** intensity of high temperatures(TXx)has strengthened and the geographical extent affected by high temperatures has *** 2022,the occurrence of 40℃ high temperatures surges,with Eastern China experiencing a two-day increase in TX40d and an extended seasonal length in TX40l by over five *** CMIP6 models have underestimated the high temperature indictors associated with 35℃ during historical periods,notable difference is not observed between the models and observations for TX40d and TX40l,given their rare ***,future projections,after bias correction,indicate that the increasing trends for 35℃ and 40℃ high temperature days and length of season become more pronounced than the raw projection,suggesting a more severe increase than that anticipated *** global warming intensifies,the high temperature days and length of season are projected to increase non-linearly,while the intensity of high temperatures is expected to increase *** every 1℃ increase in global temperature,the intensity is

关键词： Extreme high temperatures Meteorological warning CMIP6 Global warming levels Future projection

Calculation model of mass action concentrations for CaO-MgO-SiO_2-Al_2O_3-Cr_2O_3 penta-slag

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2010年第2期21卷 229-233页

作者： Guo, hua hu, yu ting Cang, Da Qiang Jin, Yi Wang, Li Xin Cheng, Xiang Li Bai, Hao Zong, Yan Bing Univ Sci & Technol Beijing Sch Met & Ecol Engn Beijing 100083 Peoples R China Taiyuan Iron & Steel Co Ltd Taiyuan 030003 Peoples R China

Two calculation models of mass action concentrations for CaO-MgO-SiO_2-Al_2O_3-Cr_2O_3 penta-slag was presented whether 3CaO·Cr_2O_3·3SiO_2 was existence or *** mass action concentration of each element structure was *** the models results were compared with experimental *** final results illustrated the model without 3CaO·Cr_2O_33SiO_2 was suit for *** model could response the element structure of slag as well.

关键词： Slag Cr_2O_3 Co-existence theory Thermodynamic calculation model

Uniform lithium deposition induced by copper phthalocyanine additive for durable lithium anode in lithium-sulfur batteries

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2024年第5期35卷 447-452页

作者： ting hu yuxuan Guo Yixuan Meng Ze Zhang Ji yu Jianxin Cai Zhenyu Yang Key Laboratory of Jiangxi Province for Environment and Energy Catalysis School of Chemistry and Chemical EngineeringNanchang UniversityNanchang 330031China

Copper phthalocyanine(CuPc)is adopted as an electrolyte additive to stabilize lithium anode for lithiumsulfur(Li-S)*** with a planar molecular structure and lithiophilic N-containing group,is likely to be adsorbed on the surface of Li anode to form a coating layer,which can restrict the direct contact between Li anode and solvents,and guide the uniform deposition of Li^(+)*** Li||Li symmetric cells demonstrate a stable cycle performance,and Li||Cu cells show high Coulombic *** Li-S batteries,the formed stable solid-electrolyte interface(SEI)film containing copper sulfides can protect Li anode from the polysulfide corrosion and side reactions with the electrolyte,leading to the compact and smooth surface morphology of Li ***,the Li-S batteries with CuPc additive deliver much higher capacity,better cycle performance and rate capability as compared to the one without CuPc additive.

关键词： Copper phthalocyanine Electrolyte additive Stable SEI film Stabilized Li anode Lithium-sulfur batteries

Identification and functional analysis of CG3526 in spermatogenesis of Drosophila melanogaster

在线全文

学校读者我要写书评

暂无评论

Insect Science 2024年第1期31卷 79-90页

作者： Qihao hu Yanhong Xiao Runnan Wei ting Tang Liang Wen yuzhen Lu Xiao-Qiang yu Guangdong Provincial Key Laboratory of Insect Developmental Biology and Applied Technology Guangzhou Key Laboratory of Insect Development Regulation and Application ResearchInstitute of Insect Science and TechnologySchool of Life SciencesSouth China Normal UniversityGuangzhou510631 China

Spermatogenesis is a critical part of reproduction in insects;however,its molecular mechanism is still largely *** this study,we identified a testis-specific gene CG3526 in Drosophila *** analysis showed that CG3526 contains a zinc binding domain and 2 C2H2 type zinc fingers,and it is clustered to the vertebrate really interesting new gene(RING)family E3 ubiquitin-protein *** CG3526 was knocked down by RNA interference(RNAi),the testis became much smaller in size,and the apical tip exhibited a sharp and thin end instead of the blunt and round shape in the control *** importantly,compared to the control flies,only a few mature sperm were present in the seminal vesicle of C587-Gal4>CG3526 RNAi *** staining of the testis from CG3526 RNAi flies showed that the homeostasis of testis stem cell niche was disrupted,cell distribution in the apical tip was scattered,and the process of spermatogenesis was not ***,we found that the phenotype of CG3526 RNAi flies’testis was similar to that of testis of Stat92E RNAi flies,the expression level of CG3526 was significantly downregulated in the Stat92EF06346 mutant flies,and the promoter activity of CG3526 was upregulated by *** together,our results indicated that CG3526 is a downstream effector gene in the JAK-STAT signaling pathway that plays a key role in the spermatogenesis of Drosophila.

关键词： CG3526 JAK-STAT spermatogenesis STAT92E testis