检索结果-南通市图书馆

Performance measure for image fusion considering region information

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 Zhejiang University-Science A(Applied Physics & Engineering) 2007年第4期8卷 559-562页

作者： LIU Gang Lü xue-qin School of Power and Automation Engineering Shanghai University of Electric Power Shanghai 200093 China

An objective performance measure for image fusion considering region information is proposed. The measure not only reflects how much the pixel level information that fused image takes from the source image, but also considers the region information between source images and fused image. The measure is meaningful and explicit. Several simulations were conducted to show that it accords well with the subjective evaluations.

关键词： Image fusion Information fusion Image processing

Observation and measurement of applied anatomical features for thoracic intervertebral foramen puncture on computed tomography images

在线全文

学校读者我要写书评

暂无评论

World Journal of Clinical Cases 2021年第18期9卷 4607-4616页

作者： ran Wang Wei-Wei Sun Ying Han Xiao-xue Fan xue-qin Pan Shi-Chong Wang Li-Juan Lu Department of Pain Management Nanjing Drum Tower HospitalClinical College of Xuzhou Medical UniversityNanjing 210008Jiangsu ProvinceChina Department of Pain Management Nanjing Drum Tower HospitalThe Affiliated Hospital of Nanjing University Medical SchoolNanjing 210008Jiangsu ProvinceChina

BACKGROUND Thoracic intervertebral foramen puncture is the key step for interventional therapy on the thoracic nerve roots or dorsal root *** anatomical features of the thoracic spine are complex,and puncture injury to the pleura,blood vessels,spinal cord,and other tissues may cause serious *** spatial anatomical characteristics and related parameters for thoracic intervertebral foramen puncture remain poorly *** To observe and summarize the spatially applied anatomical characteristics for intervertebral foramen puncture on different vertebral *** A total of 88 patients(41 males and 47 females)who underwent thoracic minimally invasive interventional treatment at Nanjing Drum Tower Hospital from January 2019 to June 2020 were *** tomography images of 167 thoracic vertebral segments scanned in the prone position were *** width of the intertransverse space(D_(P)),the height of the rib neck/head above the lower transverse process(D_(R)),the width of the lateral border of the articular process/lamina(W_(P)),and the width of the posterior border of the vertebral body(W_(V))were *** the upper 1/3 of the intervertebral foramina,the horizontal inclination angle(α)from the lateral border of the articular process/lamina to the posterolateral border of the vertebral body was *** ratios D_(R)/D_(P) and W_(P)/W_(V) were *** intervertebral foramen parameters were compared between *** No rib head/neck occlusion(D_(R)/D_(P)>0)was found in the intertransverse spaces of T1-2 and *** incidence of occlusion for the upper thoracic segments(T1-5,n=138),middle thoracic segments(T5-9,n=116),and lower thoracic segments(T9-L1,n=80)were 76.81%,100%,and 82.50%,*** incidence of occlusion for the middle thoracic segments was significantly higher than that for the upper and lower thoracic segments(P1/2 occlusion(D_(R)/D_(P)>1/2)for the upper,mid

关键词： Thoracic intervertebral foramen Puncture Computed tomography Threedimensional reconstruction Rib

Influence of homodyne-based feedback control on the entropic uncertainty in open quantum system

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics B 2019年第7期28卷 137-143页

作者： Juju Hu qin xue College of Physics and Communication Electronics Jiangxi Normal University Nanchang 330022 China Key Laboratory of Photoelectronics and Telecommunication of Jiangxi Province Nanchang 330022 China

For an open quantum system containing two qubits under homodyne-based feedback control, we investigate the dynamical behaviors of quantum-memory-assisted entropic ***, we analyze the influence of feedback modes and coefficients on the entropic *** investigations show that the memory qubit should be placed in a non-dissipative channel if the single dissipative channel condition can be chosen, which helps reduce the entropic uncertainty of the *** the homodyne feedback control F =λσx(or F =λσy), due to different roles of the entangled qubits A and B, when they are subject to feedback control with different feedback coefficients λ, the exchange of feedback coefficients will cause variations of the entropic *** the feedback coefficient corresponding to the memory qubit B is larger(λB >λA), the steady value of the entropic uncertainty will be small, which is conducive to enhancing the robustness of the ***, for the feedback control F =λσz, the difference between the feedback coefficients has no effect on the steady values of the entropic uncertainty.

关键词： homodyne-based feedback control quantum-memory-assisted entropic uncertainties memory qubit open quantum system

3D printing of cell-delivery scaffolds for tissue regeneration Jianmin xue and others

在线全文

学校读者我要写书评

暂无评论

Regenerative Biomaterials 2023年第1期10卷 839-852页

作者： Jianmin xue Chen qin Chengtie Wu State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 200050People’s Republic of China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049People’s Republic of China

Tissue engineering strategy that combine biomaterials with living cells has shown special advantages in tissue regeneration and promoted the development of regenerative *** particular,the rising of 3D printing technology further enriched the structural design and composition of tissue engineering scaffolds,which also provided convenience for cell loading and cell delivery of living *** this review,two types of cell-delivery scaffolds for tissue regeneration,including 3D printed scaffolds with subsequent cell-seeding and 3D cells bioprinted scaffolds,are mainly *** devote a major part to present and discuss the recent advances of two 3D printed cell-delivery scaffolds in regeneration of various tissues,involving bone,cartilage,skin tissues *** two types of 3D printed cell-delivery scaffolds have some shortcomings,they do have generally facilitated the exploration of tissue engineering scaffolds in multiple tissue *** is expected that 3D printed cell-delivery scaffolds will be further explored in function mechanism of seeding cells in vivo,precise mimicking of complex tissues and even organ reconstruction under the cooperation of multiple fields in future.

关键词： cell-delivery 3D printing tissue regeneration

Zoledronate-loaded aluminum salt nanovaccines amplify cellular immune response by enhancing cross-presentation

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano Research 2025年第1期18卷 559-571页

作者： Chunting He Penghui He xue Tang Shuting Bai Ming qin Yunting Zhang Zhaofei Guo Guangsheng Du Xun Sun Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry West China School of PharmacySichuan UniversityChengdu 610041China

Being a Th2 stimulator,classic aluminum salt-based adjuvants only stimulate weak cellular immune responses that are required for vaccination against intracellular viruses or cancerous *** a thirdgeneration bisphosphonate,zoledronate(ZOL)can enhance antigen crosspresentation by inhibiting key enzymes of the mevalonate ***,we developed the subunit antigen ovalbumin(OVA)and ZOL co-loaded aluminum hydroxide nanoparticles(APN-OVA-ZOL)and investigated their capacity for inducing cellular immune responses against the *** results showed that the developed nanovaccines could successfully encapsulate OVA and ZOL,and enabled efficient lymph node *** by the mevalonate pathway inhibition effect of ZOL,APN-OVA-ZOL significantly promoted *** a result,APN-OVA-ZOL induced robust cellular immunity,including the activation of T and B *** a EG7-OVA tumor-bearing murine model,APN-OVA-ZOL significantly inhibited the tumor growth and prolonged mice *** work provided a strong empirical foundation indicating that zoledronate-loaded aluminum salt nanovaccines had a strong potency for cancer immunotherapy.

关键词： zoledronate(ZOL) mevalonate pathway antigen cross-presentation cellular immune responses

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

大肠杆菌志贺样毒素Ⅱ型基因的分子克隆

西南农业学报 2003年第3期16卷 86-89页

作者：冉雪琴吴拥军王嘉福贵州大学动物科学学院贵州贵阳550025 贵州大学生物与环境科学学院贵州贵阳550025

本文克隆了含大肠杆菌志贺样毒素Ⅱ型基因的2 0kbSau3AI酶切片断,对插入片段进行了核苷酸序列测定,1298bp的核苷酸序列包含2个完整的开放读框,其中SLTIIA亚基基因编码区长957bp,编码319个氨基酸多肽,SLTIIB亚基基因编码区长267bp,编码8... 详细信息

本文克隆了含大肠杆菌志贺样毒素Ⅱ型基因的2 0kbSau3AI酶切片断,对插入片段进行了核苷酸序列测定,1298bp的核苷酸序列包含2个完整的开放读框,其中SLTIIA亚基基因编码区长957bp,编码319个氨基酸多肽,SLTIIB亚基基因编码区长267bp,编码89个氨基酸多肽,与已知人源的SLTII基因核苷酸序列比较具有99%的同源性,与SLTI结构基因相比,A亚基同源序列为56 43%,B亚基为60 15%。

关键词：犊牛病原菌大肠杆菌志贺样毒素Ⅱ型基因基因克隆序列分析

Thermally activated delayed fuorescent small molecule sensitized fuorescent polymers with reduced concentration‑quenching for efcient electroluminescence

在线全文

学校读者我要写书评

暂无评论

Frontiers of Optoelectronics 2023年第1期16卷 41-48页

作者： qin xue Mingfang Huo Guohua Xie Department of Physical Science and Technology Central China Normal UniversityWuhan 430079China Sauvage Center for Molecular Sciences Hubei Key Lab on Organic and Polymeric Optoelectronic MaterialsDepartment of ChemistryWuhan UniversityWuhan 430072China Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhan 430074China

Thermally activated delayed fuorescence(TADF)small molecule bis-[3-(9,9-dimethyl-9,10-dihydroacridine)-phenyl]-sulfone(m-ACSO2)was used as a universal host to sensitize three conventional fuorescent polymers for maximizing the electroluminescent *** excitons were utilized via inter-molecular energy transfer and the non-radiative decays were successfully refrained in the condensed ***,the signifcant enhancement of the electroluminescent efciencies was *** instance,after doping poly(9,9-dioctylfuorene-co-benzothiadiazole)(F8BT)into m-ACSO2,the external quantum efciency(EQE)was improved by a factor of 17.0 in the solution-processed organic light-emitting device(OLED),as compared with the device with neat *** terms of the other well-known fuorescent polymers,i.e.,poly(para-phenylene vinylene)copolymer(Super Yellow,SY)and poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene](MEH-PPV),their EQEs in the devices were respectively enhanced by 70%and 270%,compared with the reference devices based on the conventional host 1,3-di(9H-carbazol-9-yl)benzene(mCP).Besides the improved charge balance in the bipolar TADF host,these were partially ascribed to reduced fuorescence quenching in the mixed flms.

关键词： Thermally activated delayed fuorescence(TADF) Organic light-emitting device(OLED) Sensitization Energy transfer Solution process

Comparison of Chain Structures between High-speed Extrusion Coating Polyethylene Resins by Preparative Temperature Rising Elution Fractionation and Cross-fractionation

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Polymer Science 2015年第11期33卷 1586-1597页

作者： Yan-hu xue Shu-qin Bo 姬相玲 State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied ChemistryChinese Academy of Sciences

Two polyethylene（PE） resins（samples A and B） are synthesized as high-speed extrusion coatings with similar minimum coating thickness and neck-in performance but different maximum coating speeds. Both samples are separated into seven fractions using preparative temperature rising elution fractionation. The microstructures of the original samples and their fractions are studied by high-temperature gel permeation chromatography, Fourier transform infrared spectroscopy, 13 C nuclear magnetic resonance spectroscopy, differential scanning calorimetry, and successive self-nucleation/annealing thermal fractionation. Compared with sample B, sample A has a broader MWD, more LCB contents, and less SCB contents. Moreover, sample A contains slightly more 30 ℃ and 50 ℃ fractions with lower molecular weights, and more fractions at 75 ℃ and 85 ℃ with higher molecular weight. The chain structure and its distribution in the two PE resins are studied in detail, and the relationship between the chain structure and resin properties is also discussed.

关键词： Polyethylene High-speed extrusion coating Chain structure TREF Cross-fractionation

Calibration Curve Establishment and Fractionation Temperature Selection of Polyethylene for Preparative Temperature Rising Elution Fractionation

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Polymer Science 2015年第7期33卷 1000-1008页

作者： Yan-hu xue Shu-qin Bo 姬相玲 State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied ChemistryChinese Academy of Sciences University of Chinese Academy of Sciences

A series of copolymers of ethylene with 1-hexene synthesized using a metallocene catalyst are selected and mixed. The blend is fractionated via preparative temperature rising elution fractionation（P-TREF）. All fractions are characterized via high-temperature gel permeation chromatography（GPC）, 13 C nuclear magnetic resonance spectroscopy（13C-NMR）, and differential scanning calorimetry（DSC）. The changes in the DSC melting peak temperatures of the fractions from P-TREF as a function of elution temperature are almost linear, thereby providing a reference through which the elution temperature of TREF experiments could be selected. Moreover, the standard calibration curve（ethylene/1-hexene） of P-TREF is established, which relates to the degree of short-chain branching of the fractions. The standard calibration curve of P-TREF is beneficial to study on the complicated branching structure of polyethylene. A convenient method for selecting the fractionation temperature for TREF experiments is elaborated. The polyethylene sample is fractionated via successive self-nucleation and annealing（SSA） thermal fractionation. A multiple-melting endotherm is obtained through the final DSC heating scan for the sample after SSA thermal fractionation. A series of fractionation temperatures are then selected through the relationship between the DSC melting peak temperature and TREF elution temperature.

关键词： TREF Calibration curve Fractionation temperature SSA Polyethylene