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环境分权对区域工业绿色发展影响的空间溢出效应研究

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生态经济 2025年第1期41卷 201-209,229页

作者：王晗阚萧江苏师范大学公共管理与社会学院江苏徐州221116

在理论机制分析的基础上,基于2005—2020年我国30个省份的面板数据,采用Super-SBM模型测度了区域工业绿色发展水平,进而采用空间计量模型等方法检验了环境分权对区域工业绿色发展的影响。研究发现:(1)在考虑空间溢出效应的前提下,环境... 详细信息

在理论机制分析的基础上,基于2005—2020年我国30个省份的面板数据,采用Super-SBM模型测度了区域工业绿色发展水平,进而采用空间计量模型等方法检验了环境分权对区域工业绿色发展的影响。研究发现:(1)在考虑空间溢出效应的前提下,环境分权对区域工业绿色发展具有显著的抑制作用,但空间影响程度较为有限。使用工具变量处理内生性问题后,上述核心结论依然成立。(2)环境行政分权、环境监察分权及环境监测分权对工业绿色发展在影响方向或强度上存在显著差异。(3)进一步分析表明,财政分权、地方政府竞争程度的提升,强化了环境分权对工业绿色发展的抑制作用。(4)相比于东部地区,环境分权及其细分指标在中部和西部地区的边际效应更强;相比于2005—2012年,2013—2020年环境分权及细分指标的边际效应有所减弱。因此,建议建立跨级环境治理协作机制,强化数据透明度和公信力,明确权责匹配原则以及在环保垂管体制下细化环境分权政策。

关键词：环境分权工业绿色发展空间溢出效应区域异质性

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聚氯乙烯消雾型无滴膜的研制

齐齐哈尔大学学报（自然科学版） 2003年第2期19卷 18-20页

作者：李志军周晓光王雅珍黑龙江金鹤王塑料制品有限责任公司齐齐哈尔161000 齐齐哈尔齐塑塑料制品有限责任公司齐齐哈尔161000 齐齐哈尔大学齐齐哈尔161006

本文阐述了消雾剂的消雾机理,确定了消雾剂的品种及用量,介绍了聚氯乙烯消雾型无滴膜的配方设计、生产工艺及其优于普通无滴膜的多项性能指标。

关键词：聚氯乙烯消雾型无滴膜研制

Block diagonalization coordinated transmission with zero-forcing in MIMO broadcast

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The Journal of China Universities of Posts and Telecommunications 2011年第3期18卷 27-33页

作者： wang ya-chen MA xiao-feng LI Ye Shandong Computer Science Center Jinan 250014 China Shandong Provincial Key Laboratory of Computer Network Jinan 250014 China

This work has investigated coordinated multiple-input multiple-output （MIMO） transmission schemes in an interference-limited cellular downlink. It has proposed a novel block diagonalization （BD） coordinated transmission scheme, which combines with zero-forcing （ZF） criterion. In the scheme, the BD technique has advantages in suppressing multi-user interference while the ZF technique enables to mitigate interference among spatial data streams for a user. Based on the proposed coordinated scheme, an efficient power allocation is also put forward. The analyses show that the ergodic capacity of the proposed coordinated scheme is that of the MIMO channel with the maximum transmit power at each transmitter. Computer simulations demonstrate the effectiveness of the proposed coordinated scheme and its corresponding power allocation.

关键词： BD cellular systems coordinated transmission MIMO power allocation ZF

An Explicit Lower Bound for Blow Up Time in a Class of Nonlinear Wave Equations with Nonlinear Damping and Source Terms

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Acta Mathematicae Applicatae Sinica 2021年第1期37卷 148-154页

作者： xiao-ming PENG ya-dong SHANG Xue-qin wang School of Statistics and Mathematics Guangdong University of Finance and EconomicsGuangzhou 510320China School of Mathematics and Information Science Guangzhou UniversityGuangzhou 510006China College of Mathematics and Informatics South China Agricultural UniversityGuangzhou 510642China

This paper deals with an initial boundary value problem for a class of nonlinear wave equation with nonlinear damping and source terms whose solution may blow up in finite *** explicit lower bound for blow up time is ... 详细信息

关键词： lower bound blow up nonlinear wave equation nonlinear damping nonlinear source

Features of the new climate normal 1991-2020 and possible influences on climate monitoring and prediction in China

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Advances in Climate Change Research 2023年第6期14卷 930-940页

作者： xiao-Juan wang ya TUO xiao-Fan LI Guo-Lin FENG College of Electronic and Information Engineering Changshu Institute of TechnologySuzhou 215100China Deparment of Amospheric and Oceanic Sciences&Institute of Atmospheric Sciences Fudan UniversityShanghai 200433China Hebei Climate Center/China Meteorological Administration Xiong'an Atmospheric Boundary Layer Key Laboratory/Key Laboratory of Meteorology and Ecological Environment of Hebei Province Shijiazhuang 050021China Laboratory for Climate Studies National Climate Research Center China Meteorological AdministrationBeijing 10o081China

An update on the climate norms each decade is recommended by the World Meteorological Organization(WMO)partly to keep pace with conditions as climate changes over *** accordance with such update,this study documents the features of the new climate normal defined for 1991-2020 and its impacts on climate monitoring and prediction in *** on-site observation and model prediction datasets,our analysis reveals that the new normal of national average precipitation of China during winter and summer is respectively 3.0 and 10.8 mm higher than that of the period *** a result,precipitation observations during 1961-2020 consistently fall below the new *** adjustment of thresholds for precipitation extremes with new climate normals results in a decrease of extreme precipitation occurrence by 0.2-0.8 d on average over the winter and summer seasons during ***,the application of new climate normals induces more pronounced negative temperature anomalies across most areas of *** adjustments of extreme temperature thresholds have led to an increased occurrence of extremely cold days by 1-2 d on average over 1961-2020,while the frequency of extremely hot days decreases by more than 1.4 ***,it is implied that with the development of global warming,the baselines for temperature and precipitation are *** application of the new climate normal may result in the omission of relative threshold based extreme events,promoting increased focus on climate risk reduction ***,the average anomaly sign consistency rates(Pcs)of precipitation and temperature anomaly predictions,relative to the new normal and produced by the Beijing Climate Center,are consistently lower than those relative to the old *** decrease in Pcs implies new challenges for climate prediction,especially for temperature prediction.

关键词： Climate normal Temperature Precipitation Extreme climate event Prediction

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氯化汞雌激素样作用及其机制的实验研究

中国职业医学 2004年第4期31卷 10-12页

作者：陈小玉王亚东吴逸明许东徐玉宝郑州大学公共卫生学院劳动卫生与卫生毒理学教研室河南郑州450052

目的　评价氯化汞 (HgCl2 )的雌激素样作用及其作用机制。方法　从体内和体外两个水平 ,观察不同浓度的HgCl2 对MCF 7人乳腺癌细胞增殖作用、去卵巢SD大鼠子宫的诱导增生作用、过氧化物活力的变化及对雌激素结合雌激素受体的影响。结果... 详细信息

目的　评价氯化汞 (HgCl2 )的雌激素样作用及其作用机制。方法　从体内和体外两个水平 ,观察不同浓度的HgCl2 对MCF 7人乳腺癌细胞增殖作用、去卵巢SD大鼠子宫的诱导增生作用、过氧化物活力的变化及对雌激素结合雌激素受体的影响。结果　 10 -6～ 10 -9mol/L的HgCl2 均可引起MCF 7人乳腺癌细胞增殖 ,10 -7mol/L的HgCl2 使MCF 7人乳腺癌细胞增殖达最大。每天 0 0 4、0 2 0及 1 0 0mg/kg连续 3d腹腔注射HgCl2 能刺激大鼠子宫增生和过氧化物酶活力增加 ;但HgCl2 不影响雌二醇 (E2 )与雌激素受体结合。结论　HgCl2 可能通过雌激素受体介导而表现出雌激素样作用 ,但不与E2 竞争结合雌激素受体。

关键词：氯化汞人乳腺癌细胞子宫增重过氧化物酶雌激素受体

A new bisbenzylisoquinoline alkaloid from Plumulanelumbinis

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Chinese Chemical Letters 2016年第12期27卷 1755-1758页

作者： xiao-xiao Zhang Shuang-ChengMa Peng Mao ya-Dan wang Beijing University of Chinese Medicine Beijing 100029 China National Institutes for Food and Drug Control Beijing 100050 China Shaanxi Momentum Pharmaceutical Co. LTD Xi'an 710075 China

One new bisbenzylisoquinoline alkaloid, neferine N-oxide （1）, along with three known compounds, neferine （2）, liensinine （3）, and isoliensinine （4）, were isolated from Plumulanelumbinis - the embryo of the seed of Nelumbonucifera. Their structures were elucidated by extensive spectroscopic analysis （MS, UV, IR, NMR）, and the absolute configurations were determined by experimental circulardichroism （CD） spectra. Compound 1 is a new naturally occurring bisbenzylisoquinoline alkaloid with an N-oxide functionality, and the CD spectrum of （1R, 1＇R） neferine is first reported. The antioxidant activities of compounds 1-4 were evaluated using the ORAC assay, which illustrated that all these compounds showed the different levels of oxygen radical absorbance capacity.

关键词： Plumulanelumbinis Bisbenzylisoquinoline alkaloid Neferine N-oxide ORAC assay Antioxidative activity

Role of nutrition in diabetes mellitus and infections

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World Journal of Clinical Cases 2025年第3期13卷 1-8页

作者： Xue-Lu Yu Li-Yun Zhou xiao Huang Xin-Yue Li Ming-Ke wang Ji-Shun yang Naval Medical Center of PLA Naval Medical UniversityShanghai 200052China

In this editorial,we have commented on the article that has been published in the recent issue of World Journal of Clinical *** authors have described a case of unilateral thyroid cyst and have opined that the acute onset of infection may be linked to diabetes mellitus(DM).We have focused on the role of nutrition in the association between DM and *** with DM are at a high risk of infection,which could also be attributed to nutrition-related *** interventions for patients with diabetes are mainly based on a low-calorie diet,which can be achieved by adhering to a low-carbohydrate ***,dietary fiber supplementation is recommended to maintain the diversity of the gut ***,high-quality protein can prevent the increased risk of infection due to *** of vitamins C,vitamins A,vitamins D,and folic acid improves blood sugar control and facilitates immune *** deficiencies augment the risk of infection,but the relationship with diabetes is mostly U-shaped and a good intake should be maintained.

关键词： Diabetes mellitus Infection Macronutrients Vitamins Minerals

On the Motion of Shear-Thinning Heat-Conducting Incompressible Fluid-Rigid System

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Acta Mathematicae Applicatae Sinica 2018年第3期34卷 534-552页

作者： ya-zhou CHEN Qiao-lin HE xiao-ding SHI Teng wang xiao-ping wang Faculty of Science Beijing University of Chemical Technology Beijing 100029 China School of Mathematics Sichuan University Sichuan 610065 China College of Applied Sciences Beijing University of Technology Beijing100124 China Department of Mathematics Hong Kong University of Science and Technology H.K. China

The full Navier-Stokes-Fourier system with mixed boundary condition that describes the motion of shear-thinning and incompressible viscous fluid in a rotating multi-screw extruder is investigated. The viscosity is assumed to depend on the shear rate and the temperature. The global existence of suitable weak solutions is established. The fictitious domain method which consists in filling the moving rigid screws with the surrounding fluid and taking into account the boundary conditions on these bodies by introducing a well-chosen distribution of boundary forces is used.

关键词： shear-thinning heat-conducting incompressible fluid suitable weak solution