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银行科技贷款对创新质量的影响机制及效应研究

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电子科技大学学报（社科版） 2024年第1期26卷 31-43页

作者：俞立平金珍珍浙江工商大学杭州310018 南方科技大学深圳518000

银行科技贷款作为科技金融的重要组成部分之一,对企业创新质量的提高具有至关重要的作用。本文基于高科技产业面板数据,构建了银行科技贷款对创新质量的影响机制,并采用面板回归模型、面板门槛模型对其中的线性关系、非线性关系进行了... 详细信息

银行科技贷款作为科技金融的重要组成部分之一,对企业创新质量的提高具有至关重要的作用。本文基于高科技产业面板数据,构建了银行科技贷款对创新质量的影响机制,并采用面板回归模型、面板门槛模型对其中的线性关系、非线性关系进行了实证研究。研究发现,银行科技贷款总体上对创新质量产生正向影响。银行科技贷款水平较低时,其对创新质量的促进作用较大;企业创新质量水平较低时,银行科技贷款对创新质量的促进作用不足。随着企业研发经费投入水平由低到高,银行科技贷款对创新质量的贡献呈“u”型。因此,为实现企业创新质量的提高,应优化研发经费来源配置。

关键词：科技金融银行科技贷款创新质量

Femtosecond laser cataract surgery

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Eye and Vision 2015年第1期2卷 95-102页

作者： zoltan z.Nagy Colm McAlinden Department of Ophthalmology Semmelweis UniversityMaria u.39H-1085 BudapestHungary Flinders university Bedford ParkAdelaideSouth AustraliaAustralia School of Ophthalmology and Optometry Wenzhou Medical UniversityWenzhouZhejiangChina

Femtosecond laser(FSL)cataract surgery is in its infancy but is rapidly gaining popularity due to the improved consistency and predictability for corneal incisions and anterior *** enables subsequently less phacoemulsification energy and time to be employed,which has gains in terms of reduced corneal *** addition,the FSL allows better circularity of the anterior capsulotomy,capsule overlap,intraocular lens(IOL)placement and centration of the *** advantages have resulted in improved visual and refractive outcomes in the short *** rates are low which reduce with surgeon *** review article focuses on the Alcon LenSx system.

关键词： Femtosecond Cataract surgery Femtosecond laser Capsulorhexis Phacoemulsification Corneal incisions Corneal oedema Macular oedema

Decipher hydrocarbon generation and accumulation based on fluid inclusion and chronology:A case study from the upper Paleozoic buried-hills in Huanghua Depression,Bohai Bay Basin

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Petroleum Science 2023年第4期20卷 1998-2008页

作者： Li-Hong zhou Yong Li Feng-Ming jin jin-Feng Xie Xiu-Gang Pu Li-Xin Fu Da Lou Yang Tian PetroChina Dagang Oilfield Company Tianjin300280China State Key Laboratory of Coal Resources and Safe Mining and College of Geosciences and Surveying Engineering China University of Mining and TechnologyBeijing100083China

Deciphering hydrocarbon generation and accumulation stage is of significance to understand oil and gas evolution and seek exploration *** the upper Paleozoic buried-hills in the Huanghua Depression,Bohai Bay Basin,as a case study,hydrocarbon generation environment and detailed accumulation process are revealed by fluid inclusions observations,Laser Raman spectroscopy,Fourier Infrared spectroscopy,and K-Ar isotope *** results show that both oil and gas inclusion were captured in the quartz overgrowth,dissolved feldspar and calcite microfractures,showing blue to dark brown *** grains containing oil inclusions index(GOI)of oil,oil&gas and gas being 25%,65%,and 10%and the inclusions with abundant methyl groups and short chains,both indicate high thermal *** series of fluids inclusion is generally observed,evidenced by the concentrated homogenization temperature of 135-145℃ and salinity of 3%-15 w.t.%NaCl equiv,indicating one primary charging *** gas and gas&liquid inclusions mainly contain CH_(4),with also peaks indicating CO_(2) and N_(2.)The Carboniferous and Permian biomarkers show reducing environment with brackish water,with organic matter sources both from marine and *** relative content ofααα20RC_(27),ααα20RC_(28),andααα20RC_(29) exhibit source contributions both from algae and higher plants,and mainly of II2 to III *** coal derived gas and oil associated hydrocarbons are identified from most of the *** the fluid homogenization temperature and salinity,as well as the thermal evolution history,the hydrocarbon generated from the upper Paleozoic was concentrated at the end of the Eocene(40 Ma±),while the beginning of charging is 60 Ma±.The Wumaying Buried-hill is of only coal derived gas and has potential for inner coal measure natural gas *** results provide a detailed understanding of hydrocarbon accumulations in the study area,which can also be reference for impro

关键词： Petroleum accumulation Buried hills K–Ar isotope Fluid inclusions Huanghua depression Bohai Bay Basin

Periodic Algebras Generated by Groups

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Algebra Colloquium 2015年第4期22卷 541-554页

作者： S. Albeverio B.A. Omirov u.A. Rozikov Institut fur Angewandte Mathematik and HCM universitat Bonn Bonn Germany Institute of Mathematics 29 Do'rmon Yo'li str. 100125 Tashkent Uzbekistan

We consider algebras with basis numerated by elements of a group G. We fix a function f from G × G to a ground field and give a multiplication of the algebra which depends on f. We study the basic properties of such algebras. In particular, we find a condition on f under which the corresponding algebra is a Leibniz algebra. Moreover, for a given subgroup G of G we define a G-periodic algebra, which corresponds to a G-periodic function f, we establish a criterion for the right nilpotency of a G-periodic algebra. In addition, for （7 = z we describe all 2z- and 3z-periodic algebras. Some properties of nz-periodic algebras are obtained.

关键词： periodic algebra Leibniz algebra group

Iron Biomineralization Controls on Geophysical Signatures of Hydrocarbon Contaminated Sediments

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Journal of Earth Science 2015年第6期26卷 835-843页

作者： Estella A.Atekwana Gamal z.Abdel Aal Boone Pickens School of Geology Oklahoma State University Geology Department Faculty of Science Assiut University

The interpretation of geophysical data from mature hydrocarbon contaminated sites has relied on a conductive plume model where the conductivity of the subsurface contaminant volume is the result of microbial mediated changes in pore fluid chemistry. This conductive anomalous region is characterized by high total dissolved solids and occurs within the water table fluctuation zone where microbial activity is the maximum. Here we update this conductive plume model by providing new insights from recent laboratory investigations and geophysical data from hydrocarbon contaminated sites suggesting the unrecognized role of the impact that microbial-mediated metallic mineral precipitates have on geophysical signatures. We show that microbial redox processes（e.g., iron and sulfate reduction） during the biodegradation process involve mineralogical transformations and the precipitation of new minerals（e.g., magnetite, and pyrite） that can impact the electrical and magnetic properties of contaminated sediments. We provide examples from laboratory experiments and field studies and suggest that knowledge of the dominant redox processes occurring at hydrocarbon contaminated sites and the mineral phases formed is critical for a more robust interpretation of geophysical data associated with microbial-mediated changes at hydrocarbon contaminated sites. We also show that integration of both magnetic and electrical techniques may help reduce ambiguity in data interpretation.

关键词： hydrocarbon redox processes magnetic susceptibility bioremediation conductivity.

Wild Brassica and Its Close Relatives in Turkey,the Genetic Treasures

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Horticultural Plant Journal 2021年第2期7卷 97-107页

作者： Ali A.Donmez zubeyde ugurlu Aydın Xiaowu Wang Molecular Plant Systematic Laboratory(MOBIS) Department of BiologyFaculty of ScienceHacettepe UniversityAnkara 06800Turkey Key Laboratory of Biology and Genetic Improvement of Horticultural Crops of the Ministry of Agriculture Sino-Dutch Joint Laboratory of Horticultural GenomicsInstitute of Vegetables and FlowersChinese Academy of Agricultural SciencesBeijing 100081China

Brassica taxa occur naturally and are also cultivated in *** to their economic importance,several cultivars have been extensively cultivated in certain regions of the *** extensive cultivation for vegetable production of the other species of the genus,Brassica juncea has very limited *** native species of Brassica are known from restricted locations in Turkey with only a few *** them,Brassica elongata is distributed all over the Central and Eastern parts of the country and it prefers unfertile soils on *** the current data about the Brassica taxa would lead to new initiatives for Brassica research dealing with both the genetic structure and the origin of the *** characters of the genera closely related to Brassica have been discussed under the relevant ***,an overview for the Turkish Brassiceae tribe,both native and cultivated,has been presented and the relevant identification keys have been supplied for updating.

关键词： Brassica Brassiceae cultivation native Turkey

Subreflector model depending on elevation for the Tianma 65 m Radio Telescope

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Research in Astronomy and Astrophysics 2016年第8期16卷 9-16页

作者： zheng-Xiong Sun jin-Qing Wang Lan Chen Shanghai Astronomical Observatory Chinese Academy of Sciences Shanghai 200030 China Shanghai Institute of Technology Shanghai 201400 China

A subreflector adjustment system for the Tianma 65 m radio telescope, administered by Shanghai Astronomical Observatory, has been installed to compensate for gravitational deformation of the main re- flector and the structure supporting the subreflector. The position and attitude of the subreflector are variable in order to improve the efficiency at different elevations. The subreflector model has the goal of improving the antenna＇s performance. A new fitting formulation which is different from the traditional formulation is proposed to reduce the fitting error in the Y direction. The only difference in the subreflector models of the 65 m radio telescope is the bias of a constant term in the z direction. We have investigated the effect of movements of the subreflector on the pointing of the antenna. The results of these performance measure- ments made by moving the antenna in elevation show that the subreflector model can effectively improve the efficiency of the 65 m radio telescope at each elevation. An antenna efficiency of about 60% at the Ku band is reached in the whole angular range of elevation.

关键词： telescopes -- methods: observational -- methods: data analysis

Solar PV-Battery-Electric Grid-Based Energy System for Residential Applications: System Configuration and Viability

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Research 2019年第1期2019卷 486-502页

作者： V.Bagalini B.Y.zhao R.z.Wang u.Desideri university of Pisa DESTEC Largo Lucio LazzarinoPisa 56122Italy Institute of Refrigeration and Cryogenics Shanghai Jiao Tong UniversityShanghai 200240China

Distributed renewable energy share increase in electricity generation is creating challenges for the whole power system,due to its intermittent and nonprogrammable *** storage has the potential to solve those issues although its technical,economic,and environmental impact is up for *** paper presents a study about a PV-battery energy storage system installed in a gridconnected residential apartment in the Green Energy Laboratory at Shanghai Jiao Tong university,*** experimental results show how the presence of energy storage reduces the midday feed-in of excess PV power and the evening peak demand,providing benefits to the distribution network in terms of reduced voltage swings and peak *** the Chinese context,an economic analysis is carried out to assess the profitability of residential PV-battery systems,using the net present value as the economic indicator of an 18-year investment in which the battery pack is replaced twice(6 life years).The analysis shows that such system is not economically viable due to a combination of low electricity prices,valuable PV incentives,and high technology ***,considering a future scenario of doubled electricity tariff,halved export tariff,and falling technology costs(-66%battery and-17%PV and inverter),PV-battery investment becomes profitable and shows more resilience to future scenarios than PV-only investment.

关键词： battery Battery Solar

Electron mass enhancement and magnetic phase separation near the Mott transition in double-layer ruthenates

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Frontiers of physics 2018年第4期13卷 159-165页

作者： jin Peng X. M. Gu G. T. zhou W. Wang J. Y. Liu Yu Wang z. Q. Mao X. S. Wu Shuai Dong School of Physics Southeast University Nanjing 211189 China Collaborative Innovation Center of Advanced Microstrucutres Lab of Solid State Microstructures School of Physics Nanjing University Nanjing 210093 China Department of Physics and Engineering Physics Tulane University New Orleans LA 70118 USA

We present a detailed investigation of the specific heat of Ca3（Ru1-xMx）2O7 （M = Ti, Fe, Mn） single crystals. Depending on the dopant and doping level, three distinct regions are present： a quasi- two-dimensional metallic state with antiferromagnetic （AFM） order formed by ferromagnetic bilayers （AFM-b）, a Mott insulating state with G-type AFM order （G-AFM）, and a localized state with a mixed AFM-b and G-AFM phase. Our specific heat data provide deep insights into the Mort transitions induced by Ti and Mn doping. We observed not only an anomalous large mass enhancement, but also an additional term in the specific heat, i.e., C ∝ T2, in the localized region. The C ∝ T2 term is most likely due to long-wavelength excitations with both FM and AFM components. A decrease in the Debye temperature is observed in the G-type AFM region, indicating lattice softening associated with the Mott transition.

关键词： specific heat ruthenates Mort insulator phase separation