检索结果-南通市图书馆

Hydrocarbon indication in Rio Bonito Formation sandstone:Implication for CO_(2)storage in são paulo,Brazil

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Energy Geoscience 2024年第1期5卷 331-341页

作者： Richardson M.Abraham-A Haline V.Rocha saulo B.de Oliveira Colombo C.G.Tassinarri Orlando C.da silva Institute of Energy and Environment University of São PauloSão PauloBrazil Research Centre for Greenhouse Gas Innovation University of São PauloSão PauloBrazil

são paulo state has witnessed CO_(2)storage-based investigations considering the availability of suitable geologic structures and proximity to primary CO_(2)source sinks related to bioenergy and carbon capture and storage(BECCs)*** current study presents the hydrocarbon viability evaluations and CO_(2)storage prospects,focusing on the sandstone units of the Rio Bonito *** objective is to apply petrophysical evaluations with geochemical inputs in predicting future hydrocarbon(gas)production to boost CO_(2)storage within the study *** study used data from eleven wells with associated wireline logs(gamma ray,resistivity,density,neutron,and sonic)to predict potential hydrocarbon accumulation and fluid mobility in the investigated *** samples(shale and carbonate)obtained from depths>200 m within the study location have shown bitumen *** geochemistry data of the Rio Bonito Formation shale beds suggest they are potential hydrocarbon source rocks and could have contributed to the gas accumulations within the sandstone *** drilled well data,e.g.,CB-1-sp and TI-1-sp,show hydrocarbon(gas)presence based on the typical resistivity and the combined neutron-density responses at depths up to 3400 m,indicating the possibility of other hydrocarbon members apart from the heavy oil(bitumen)observed from the near-surface rocks *** the three-dimensional(3-D)model,the free fluid indicator(FFI)is more significant towards the southwest and southeast of the area with deeper depths of occurrence,indicating portions with reasonable hydrocarbon recovery rates and good prospects for CO_(2)injection,circulation and permanent ***,future studies based on contemporary datasets are required to establish the hydrocarbon viability further,foster gas production events,and enhance CO_(2)storage possibilities within the region.

关键词： paranáBasin Hydrocarbon indication sandstone reservoirs Rio Bonito Formation CO_(2)storage Hydrocarbon recovery factor Fluid injection rate

累积叠轧焊Al/Mg/Al多层复合材料的腐蚀行为

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Transactions of Nonferrous Metals society of China 2024年第1期34卷 122-138页

作者： Ismail BENCHERIFA Khadidja ABIB Khereddine ABDEL YAZID Baya ALILI Djamal BRADAI Laboratory of Metallic and semiconducting Materials(LMsM) Department of Mechanical EngineeringUniversity of BiskraB.P.14507000BiskraAlgeria Laboratory of Materials physics Faculty of PhysicsUniversity of Sciences and Technology-Houari Boumediene(U.S.T.H.B.)P.O.Box 32El-AliaBab-EzzouarDZ-16111AlgiersAlgeria Center for Development of Advanced Technologies CDTACitédu 20 août 1956Baba-Hassen16303 AlgiersAlgeria

研究累积叠轧焊(ARB)Al1050/AZ31/Al1050多层复合材料的腐蚀行为,腐蚀介质为3.5%Na Cl(质量分数)溶液,分析测试手段包括动电位极化测试(pDp)、电化学阻抗谱(EIs)、扫描电子显微镜(sEM-EDs)、拉曼光谱和X射线衍射(XRD)等。为了深入研究Al... 详细信息

研究累积叠轧焊(ARB)Al1050/AZ31/Al1050多层复合材料的腐蚀行为,腐蚀介质为3.5%Na Cl(质量分数)溶液,分析测试手段包括动电位极化测试(pDp)、电化学阻抗谱(EIs)、扫描电子显微镜(sEM-EDs)、拉曼光谱和X射线衍射(XRD)等。为了深入研究Al1050/AZ31/Al1050多层复合材料的耐腐蚀性和腐蚀产物,对ARB制备的Al1050/Al1050/Al1050多层复合材料进行了相似的测试作为对比。动电位极化曲线和电化学阻抗谱显示,ARB应变水平会显著影响腐蚀速率。与Al1050/Al1050/Al1050样品相比,Al1050/AZ31/Al1050多层复合材料具有更高的腐蚀速率和更低的极化电阻。AZ31层对腐蚀过程起主导作用。拉曼和XRD分析结果表明主要腐蚀产物为Mg(OH)2,且不含任何氯化合物(如(Mg(OH)_(2))·MgCl_(2))。

关键词：累积叠轧焊 Al1050/AZ31/Al1050 多层复合材料腐蚀金属间化合物

secure symbol level precoding for cell-free network based on band-region constraint of the eavesdropper’s receiving signal

在线全文

学校读者我要写书评

暂无评论

High Technology Letters 2024年第3期30卷 304-309页

作者： LI Zewen JIN Yong FU Chunling pENG Xin HU Zhentao school of Artifical Intelligence Henan UniversityZhengzhou 450000P.R.China school of physics and Electronics Henan UniversityKaifeng 475000P.R.China

A symbol level secure precoding scheme based on band-region constraint of the eavesdropper’s receiving signal is proposed to enhance the energy efficiency of cell-free multiple-input multiple-output(MIMO)networks in the presence of an eavesdropper while guaranteeing the quality of service(Qos)of user and the security of ***,to lighten its high computational complexity,original problem is divided into several cascade sub-problems firstly,and then those sub-problems are handled by combining Lagrangian dual function and improved Hooke-Jeeves method *** ex-periment with other secure symbol-level precoding schemes demonstrate that proposed scheme can achieve the lower power consumption with almost same symbol error rate and Qos of user.

关键词： cell-free symbol-level precoding(sLp) physical layer security(pLs) multi-ple-input multiple-output(MIMO) band-region constraint

Reduction of photodynamic damage of blood vessels in the protected region by(–)-epigallocatechin gallate

在线全文

学校读者我要写书评

暂无评论

Journal of Innovative Optical Health sciences 2024年第3期17卷 93-104页

作者： Tianlong Chen Yi shen Li Lin Huiyun Lin Xuejiao song Defu Chen Buhong Li MOE Key Laboratory of OptoElectronic science and Technology for Medicine Fujian Provincial Key Laboratory of Photonics TechnologyFujian Normal UniversityFuzhou 350117P.R.China Key Laboratory of Flexible Electronics and Institute of Advanced Materials Nanjing Technology UniversityNanjing 211800P.R.China school of Medical Technology Beijing Institute of TechnologyBeijing 100081P.R.China

photodynamic therapy(pDT)has been increasingly used in the clinical treatment of neoplastic,inflammatory and infectious skin ***,the generation of reactive oxygen species(ROs)may induce undesired side effects in normal tissue surrounding the treatment lesion,which is a big challenge for the clinical application of *** date,(–)-Epigallocatechin gallate(EGCG)has been widely proposed as an antiangiogenic and antitumor agent for the protection of normal tissue from ROs-mediated oxidative *** study evaluates the regulation ability of EGCG for photodynamic damage of blood vessels during hematoporphyrin monomethyl ether(Hemoporfin)-mediated *** quenching rate constants of EGCG for the triplet-state Hemoporfin and photosensitized 1O2 generation are determined to be 6.8×10^(8)M^(−1)s^(−1),*** vasoconstriction of blood vessels in the protected region treated with EGCG hydrogel after pDT is lower than that of the control region treated with pure hydrogel,suggesting an efficiently reduced photodamage of Hemoporfin for blood vessels treated with *** study indicates that EGCG is an efficient quencher for triplet-state Hemoporfin and 1O2,and EGCG could be potentially used to reduce the undesired photodamage of normal tissue in clinical pDT.

关键词： (–)-Epigallocatechin gallate(EGCG) photodynamic therapy hemopor¯n singlet oxygen blood vessel vasoconstriction.

Deep neural network based on multi-level wavelet and attention for structured illumination microscopy

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Innovative Optical Health sciences 2024年第2期17卷 12-23页

作者： Yanwei Zhang song Lang Xuan Cao Hanqing Zheng Yan Gong school of Biomedical Engineering(suzhou)Division of Life sciencesand Medicine University of science and Technology of China Hefei Anhui230026P.R.China suzhou Institute of Biomedical Engineering and Technology Chinese Academy of sciences suzhou Jiangsu 215163P.R.China school of physical science and Technology suzhou University of science and Technology suzhou Jiangsu 215009P.R.China

structured illumination microscopy(sIM)is a popular and powerful super-resolution(sR)technique in biomedical ***,the conventional reconstruction algorithm for sIM heavily relies on the accurate prior knowledge of illumination patterns and signal-to-noise ratio(sNR)of raw *** obtain high-quality sR images,several raw images need to be captured under high fluorescence level,which further restricts sIM’s temporal resolution and its *** learning(DL)is a data-driven technology that has been used to expand the limits of optical *** this study,we propose a deep neural network based on multi-level wavelet and attention mechanism(MWAM)for *** results show that the MWAM network can extract high-frequency information contained in sIM raw images and accurately integrate it into the output image,resulting in superior sR images compared to those generated using wide-field images as input *** also demonstrate that the number of sIM raw images can be reduced to three,with one image in each illumination orientation,to achieve the optimal tradeoff between temporal and spatial ***,our MWAM network exhibits superior reconstruction ability on low-sNR images compared to conventional sIM *** have also analyzed the adaptability of this network on other biological samples and successfully applied the pretrained model to other sIM systems.

关键词： super-resolution reconstruction multi-level wavelet packet transform residual channel attention selective kernel attention

Moderate Deviations for parameter Estimation in the Fractional Ornstein–Uhlenbeck processes with periodic Mean

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Mathematica sinica,English series 2024年第5期40卷 1308-1324页

作者： Hui JIANG shi Min LI Wei Gang WANG school of Mathematics Nanjing University of Aeronautics and AstronauticsNanjing 210016P.R.China The people's Bank of China Operations Ofice of Nanjing Branch Nanjing 210016P.R.China school of statistics and Mathematics Zhejiang Gongshang UniversityHangzhou 310018P.R.China

In this paper,we study the asymptotic properties for the drift parameter estimators in the fractional Ornstein-Uhlenbeck process with periodic mean function and long range *** Cremér-type moderate deviations,as well ... 详细信息

关键词： Cramér-type moderate deviation fractional Ornstein-Uhlenbeck process parameter estimation multiple Wiener-Ito integrals

Three-dimensional morphological and fluorescent imaging of zebrafish with a continuous-rotational light-sheet microscope

在线全文

学校读者我要写书评

暂无评论

Journal of Innovative Optical Health sciences 2024年第2期17卷 59-66页

作者： Dongmin Zhang Guang Yang Yao Tan Chong Chen Jie Zhang Hui Li school of Biomedical Engineering(suzhou)Division of Life sciences and Medicine University of science and Technology of China Hefei 230041 P.R.China suzhou Institute of Biomedical Engineering and Technology Chinese A cademy of sciences suzhou Jiangsu 215163P.R.China

Light-sheet fluorescence microscopy(LsFM)has been widely used to image the three-dimensional(3D)structures and functions of various millimeter-size bio-specimen such as ***,the sample adsorption and scattering cause shading of the light-sheet illumination,preventing the even 3D image of thick ***,we report a continuous-rotational light-sheet microscope(CR-LsM)that enables simultaneous 3D bright-field and fluorescence *** a high-accuracy rotational stage,CR-LsM records the outline projections and the fluorescent images of the sample at multiple rotation ***,3D morphology and fluorescent structure were reconstructed with a developed *** CR-LsM,zebrafish’s whole-fish contour and blood vessel structures were obtained simultaneously.

关键词： Light-sheet microscope zebrafish blood vessels morphology

Modeling and Analysis of Vibration Characteristics of Rectangular plate with Circular Through Hole Under Complex Boundary Conditions

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Transactions of Nanjing University of Aeronautics and Astronautics 2024年第4期41卷 515-525页

作者： TANG Tianyi HE Yijie WU Jiajun DONG Menglong WANG Gang NI Junfang school of Mechanical and Electrical Engineering Soochow UniversitySuzhou 215131P.R.China

This paper presents a method to study the free vibration of a plate with circular *** circular hole is regarded as a virtual small plate in which the mass density and Young's modulus are ***,the free vibration problem of the circular hole plate can be transformed into the free vibration problem of the equivalent rectangular plate with non-uniform *** model is derived from the spectral geometry method(sGM),and the displacement of the plate with circular holes is expanded by the modified Fourier *** springs are added to the boundary of the plate to simulate the boundary conditions of simply supported and fixed *** accuracy of this method is verified by comparison with the finite element calculation *** relationship between modal numerical solutions of plates with circular holes and boundary conditions and geometry of the plate is studied.

关键词： round hole plate spectral geometry method(sGM) energy method virtual spring

Acoustofluidics-enhanced biosensing with simultaneously high sensitivity and speed

在线全文

学校读者我要写书评

暂无评论

Microsystems & Nanoengineering 2024年第3期10卷 335-346页

作者： Yuang Li Yang Zhao Yang Yang Wenchang Zhang Yun Zhang sheng sun Lingqian Zhang Mingxiao Li Hang Gao Chengjun Huang Institute of Microelectronics of the Chinese Academy of sciences Beijing 100029P.R.China University of Chinese Academy of sciences Beijing 101408P.R.China Department of Medicine Brigham and Women’s HospitalHarvard Medical SchoolBostonMA 02115USA

simultaneously achieving high sensitivity and detection speed with traditional solid-state biosensors is usually limited since the target molecules must passively diffuse to the sensor surface before they can be *** techniques have been applied to shorten the diffusion time by continuously moving molecules through the biosensing ***,the binding efficiencies of the biomolecules are still limited by the inherent laminar flow inside microscale *** this study,focused traveling surface acoustic waves were directed into an acoustic microfluidic chip,which could continuously enrich the target molecules into a constriction zone for immediate detection of the immune reactions,thus significantly improving the detection sensitivity and *** demonstrate the enhancement of biosensing,we first developed an acoustic microfluidic chip integrated with a focused interdigital transducer;this transducer had the ability to capture more than 91%of passed ***,polystyrene microbeads were pre-captured with human IgG molecules at different concentrations and loaded for detection on the *** representative results,~0.63,2.62,11.78,and 19.75 seconds were needed to accumulate significant numbers of microbeads pre-captured with human IgG molecules at concentrations of 100,10,1,and 0.1 ng/mL(~0.7 pM),respectively;this process was faster than the other methods at the hour level and more sensitive than the other methods at the nanomolar *** results indicated that the proposed method could significantly improve both the sensitivity and speed,revealing the importance of selective enrichment strategies for rapid biosensing of rare molecules.

关键词： fluid continuously simultaneous