检索结果-南通市图书馆

Efficacy of Huangma Ding or autologous platelet-rich gel for the diabetic lower extremity arterial disease patients with foot ulcers

引用

World Journal of Diabetes 2024年第5期15卷 923-934页

作者： Xue-Qin Wang Dan-Lan Pu Wei-Ling Leng Xiao-Tian Lei Jiang Juan Zou La Ding Yao Jia-Zhuang Xi Li Jian teng miao Qi-Nan Wu Endocrinology Department The People’s Hospital of Yubei District of Chongqing CityChongqing 401120China Department of Endocrinology Chongqing Yubei District People’s HospitalChongqing 400030China Endocrinology Department The First Affiliated Hospital of the Army Medical UniversityChongqing 400038China Endocrinology and Nephrology Department Chongqing University Cancer Hospital and Chongqing Cancer Institute and Chongqing Cancer HospitalChongqing 400016China Department of Endocrinology Dazu Hospital of Chongqing Medical UniversityThe People’s Hospital of DazuChongqing 402360China

BACKGROUND Diabetes foot is one of the most serious complications of diabetes and an important cause of death and disability,traditional treatment has poor efficacy and there is an urgent need to develop a practical treatment *** To investigate whether Huangma Ding or autologous platelet-rich gel(APG)treatment would benefit diabetic lower extremity arterial disease(LEAD)patients with foot *** A total of 155 diabetic LEAD patients with foot ulcers were enrolled and divided into three groups:Group A(62 patients;basal treatment),Group B(38 patients;basal treatment and APG),and Group C(55 patients;basal treatment and Huangma Ding).All patients underwent routine follow-up visits for six *** follow-up,we calculated the changes in all variables from baseline and determined the differences between groups and the relationships between *** The infection status of the three groups before treatment was the ***(PCT)improved after APG and Huangma Ding treatment more than after traditional treatment and was significantly greater in Group C than in Group *** regression analysis revealed that PCT was positively correlated with total amputation,primary amputation,and minor amputation *** ankle-brachial pressure and the transcutaneous oxygen pressure in Groups B and C were greater than those in Group *** major amputation rate,minor amputation rate,and total amputation times in Groups B and C were lower than those in Group *** Our research indicated that diabetic foot ulcers(DFUs)lead to major amputation,minor amputation,and total amputation through local infection and poor microcirculation and *** Ding and APG were effective attreating *** clinical efficacy of Huangma Ding was better than that of autologous platelet gel,which may be related to the better control of local infection by Huangma *** finding suggested that in patients with DFUs combined with coinfection,controll

关键词： Diabetic foot ulcer Huangma Ding Autologous platelet-rich gel Ankle-brachial index Transcutaneous oxygen partial pressure

来源：

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

基于混合分组扩张卷积的玉米植株图像深度估计

引用

华南农业大学学报 2024年第2期45卷 280-292页

作者：周云成刘忠颖邓寒冰苗腾王昌远沈阳农业大学信息与电气工程学院辽宁沈阳110866

【目的】研究面向玉米田间场景的图像深度估计方法,解决深度估计模型因缺少有效光度损失度量而易产生的精度不足问题,为田间智能农业机械视觉系统设计及导航避障等提供技术支持。【方法】应用双目相机作为视觉传感器,提出一种基于混合... 详细信息

【目的】研究面向玉米田间场景的图像深度估计方法,解决深度估计模型因缺少有效光度损失度量而易产生的精度不足问题,为田间智能农业机械视觉系统设计及导航避障等提供技术支持。【方法】应用双目相机作为视觉传感器,提出一种基于混合分组扩张卷积的无监督场景深度估计模型。设计一种混合分组扩张卷积结构及对应的自注意力机制,由此构建反向残差模块和深度估计骨干网络;并将光照不敏感的图像梯度和Gabor纹理特征引入视图表观差异度量,构建模型优化目标。以田间玉米植株图像深度估计为例,开展模型的训练和测试试验。【结果】与固定扩张因子相比,采用混合分组扩张卷积使田间玉米植株深度估计平均相对误差降低了63.9%,平均绝对误差和均方根误差则分别降低32.3%和10.2%,模型精度显著提高;图像梯度、Gabor纹理特征和自注意力机制的引入,使田间玉米植株深度估计平均绝对误差和均方根误差进一步降低3.2%和4.6%。增加浅层编码器的网络宽度和深度可显著提高模型深度估计精度,但该处理对深层编码器的作用不明显。该研究设计的自注意力机制对编码器浅层反向残差模块中不同扩张因子的卷积分组体现出选择性,说明该机制具有自主调节感受野的能力。与Monodepth2相比,该研究模型田间玉米植株深度估计的平均相对误差降低48.2%,平均绝对误差降低17.1%;在20 m采样范围内,估计深度的平均绝对误差小于16 cm,计算速度为14.3帧/s。【结论】基于混合分组扩张卷积的图像深度估计模型优于现有方法,有效提升了深度估计的精度,能够满足田间玉米植株图像的深度估计要求。

关键词：深度估计扩张卷积自注意力无监督学习玉米植株图像

来源：

维普期刊数据库博看期刊

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

基于RGB和深度双模态的温室番茄图像语义分割模型

引用

农业工程学报 2024年第2期40卷 295-306页

作者：张羽丰杨景邓寒冰周云成苗腾沈阳农业大学信息与电气工程学院沈阳110866 辽宁农业信息化工程技术研究中心沈阳110866

图像语义分割作为计算机视觉领域的重要技术,已经被广泛用于设施环境下的植物表型检测、机器人采摘、设施场景解析等领域。由于温室环境下未成熟番茄果实与其茎叶之间具有相似颜色,会导致图像分割精度不高等问题。该研究提出一种基于混... 详细信息

图像语义分割作为计算机视觉领域的重要技术,已经被广泛用于设施环境下的植物表型检测、机器人采摘、设施场景解析等领域。由于温室环境下未成熟番茄果实与其茎叶之间具有相似颜色,会导致图像分割精度不高等问题。该研究提出一种基于混合Transformer编码器的“RGB+深度”(RGBD)双模态语义分割模型DFST(depth-fusion semantic transformer),试验在真实温室光照情况下获得深度图像,对深度图像做HHA编码并结合彩色图像输入模型进行训练,经过HHA编码的深度图像可以作为一种辅助模态与RGB图像进行融合并进行特征提取,利用轻量化的多层感知机解码器对特征图进行解码,最终实现图像分割。试验结果表明,DFST模型在测试集的平均交并比可达96.99%,对比不引入深度图像的模型,其平均交并比提高了1.37个百分点;DFST模型对比使用卷积神经网络作为特征提取主干网络的RGBD语义分割模型Shape Conv,其平均交并比提高了2.43个百分点。结果证明,深度信息有助于提高彩色图像的语义分割精度,可以明显提高复杂场景语义分割的准确性和鲁棒性,同时也证明了Transformer结构作为特征提取网络在图像语义分割中也表现出了良好的性能,可为温室环境下的番茄图像语义分割任务提供解决方案和技术支持。

关键词：温室作物语义分割注意力机制设施环境番茄图像 RGBD Transformer

来源：

维普期刊数据库

同方期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Reversible CO_(2)-, Photo-and Thermo-Triple Responsive Supramolecular Chirality of Azo-containing Block Copolymer Assemblies Prepared by Polymerization-induced Chiral Self-assembly

引用

Chinese Journal of Polymer Science 2022年第1期40卷 56-66页

作者： Ya-Jing Sun Xiao-Xiao Cheng teng-Fei miao Hao-Tian Ma Wei Zhang Xiu-Lin Zhu Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application State and Local Joint Engineering Laboratory for Novel Functional Polymeric MaterialsCollege of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhou Industrial ParkSuzhou 215123China

Polymerization-induced chiral self-assembly(PICSA)is an efficient strategy that not only allows the construction of the supramolecular chiral assemblies in a controlled manner but also can regulate the morphology in ***,a series of azobenzene-containing block copolymer(Azo-BCP)assemblies with tunable morphologies and supramolecular chirality were obtained through the PICSA *** supramolecular chirality of Azo-BCP assemblies could be regulated by carbon dioxide(CO_(2))stimulus,and completely recovered by bubbling with Ar.A reversible morphology transformation and chiroptical switching process could also be achieved by the alternative 365 nm UV light irradiation and heatingcooling ***,the supramolecular chirality is thermo-responsive and a reversible chiral-achiral switching was successfully realized,which can be reversibly repeated for at least five *** work provides a feasible strategy for constructing triple stimuli-responsive supramolecular chiral nano-objects in situ.

关键词： Supramolecular chirality Polymerization-induced self-assembly Azobenzene CO_(2)responsiveness

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Construction of Supramolecular Chirality in Polymer Systems:Chiral Induction, Transfer and Application

引用

Chinese Journal of Polymer Science 2021年第11期39卷 1357-1375页

作者： Xiao-Xiao Cheng teng-Fei miao Lu Yin Wei Zhang Xiu-Lin Zhu State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials Jiangsu Key Laboratory of Advanced Functional Polymer Design and ApplicationCollege of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhou 215123China State Key Laboratory of Radiation Medicine and Protection Soochow UniversitySuzhou 215123China

Chirality,commonly found in organisms,biomolecules and nature such as L-amino acids and D-sugars,has been extensively studied in chemistry and biomedical ***,the demand for simple and efficient construction of chiral structures,especially chiral polymers,has been rapidly growing due to their potential applications in chemosensors,asymmetric catalysis and biological ***,most chiral polymers reported are prepared directly from chiral monomers/chiral catalysts,the corresponding strategies usually involve tedious and expensive design and ***,chirality induction strategies(such as circularly polarized light,chiral solvation and chiral gelation etc.)have been known to be highly versatile and efficient in producing chirality from achiral *** this feature article,the current research on chirality induction,transfer and application in achiral polymer systems is ***,this article discusses some basic concepts,seminal studies,recent advances,the structural design principles,as well as perspectives in the construction and applications of chiral polymers derived from achiral monomers,with the hope to attract more interest from researchers and further advance the development of chiral chemistry.

关键词： Chirality Chirality induction Achiral polymer Supramolecular chemistry Self-assembly

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

1D Fe3O4@CuSiO3 composites catalyzed decarboxylative A^3-coupling for propargylamine synthesis

引用

Chinese Chemical Letters 2020年第6期31卷 1558-1563页

作者： Fang Wang Huangdi Feng Huiqiong Li teng miao Tiantian Cao Min Zhang College of Chemistry and Chemical Engineering Shanghai University of Engineering ScienceShanghai 201620China

Highly active and stable magnetic copper catalysts were successfully achieved by magnetic induced Stober method and subsequent hydrothermal reaction with copper ions in alkaline *** high content of Cu2+as well as the unique structures of hierarchical copper silicate in the as-prepared catalysts endowed their outstanding catalytic *** decarboxylative A3-coupling of a-keto acid,amine and alkyne was realized with the low Fe3 O4@CuSiO3 loading.A range of propargylamines were produced in good to excellent yields under solvent-free ***,the catalyst can be easily separated from the final organic product with an external ***,this kind of catalyst could be recycled up to six times while maintaining its activity.

关键词： Magnetic copper catalyst Heterogeneous catalysis One-dimensional Decarboxylative coupling Propargylamines

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

An interactive design method for realistic fruit rot modeling and simulation

引用

International Journal of Modeling, Simulation, and Scientific Computing 2018年第5期9卷 45-58页

作者： Sheng Wu Boxiang Xiao teng miao Weiliang Wen Xinyu Guo Beijing Research Center for Information Technology in Agriculture Beijing 100097 P.R.China Beijing Academy of Agriculture and Forestry Science Beijing 100097 P.R.China Beijing Key Lab of Digital Plant Beijing 100097 P.R.China

This paper presents a general 3D method to simulate a rotting process in fruits using a visual model for the digital design of the *** global rot parameter and rot resistance parameter are used to control a dynamic simulation of a rotting *** rot resistance parameters of every point of a 3D fruit model are generated by an interactive designing method that is similar to the traditional sketch drawing *** construct a texture of a rot region on a fruit surface by resistance *** degree of rot that is used to control both shape and appearance of rotten fruit surface can be computed by tuning the resistance parameters and global rot *** derive an exponential function to calculate the depression displacement of geometric shape caused by the *** order to render a wrinkle on the rot region,we use a normal noise map to modify a normal vector of fruit model and use an isotropic ward BRDF model to represent an appearance of fruit in which the time-varying diffuse reflectance is derived from the real *** utilize a linear function to control the dynamic simulation processes including shape deformation and aging *** have evaluated our method by simulating the rotten apple and moldy *** results have shown that our method provides a dynamic,real-time and realistic simulation,and it is flexible,fast and of a general character for digital fruit design as a visualization model.

关键词： Digital design fruit rot rot deformation BRDF.

来源：

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

S-scheme heterojunction in photocatalytic hydrogen production

引用

Journal of Materials Science & Technology 2024年第2期169卷 82-104页

作者： teng Li Noritatsu Tsubaki Zhiliang Jin School of Chemistry and Chemical Engineering North Minzu UniversityYinchuan 750021China Department of Applied Chemistry Graduate School of EngineeringUniversity of ToyamaGofuku 3190Toyama 930-8555Japan

As an ideal secondary energy source,hydrogen has the title of clean energy and the product of its complete combustion is only water,which is not polluting to the *** hydrogen production technology is an environmentally friendly,safe,and low-cost strategy that requires only an inexhaustible amount of solar energy and water as *** paper provides a detailed and detailed review of S-scheme heterojunction photocatalysts for photocatalytic hydrogen production,mainly including TiO_(2)-based,Perovskite-based,CdS-based,Graphitic phase carbon nitride-based,COF-based graphdiyne-based,ZnO-based,and ZnIn_(2)S_(4)-based S-scheme heterojunction *** classification of S-scheme heterojunctions is ***’s more,various characterizations for direct verification of the charge migration mechanism of S-scheme heterojunctions are *** on the present study,the future potential challenges and future research trends for S-scheme heterojunctions in photocatalytic hydrogen evolution technology are pointed out,which provides feasible strategies for the development and design of S-scheme heterojunction photocatalysts in the field of photocatalytic hydrogen evolution.

关键词： S-scheme heterojunction Photocatalysis Charges migration Hydrogen evolution

来源：

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

An efficient parallel algorithm of variational nodal method for heterogeneous neutron transport problems

引用

Nuclear Science and Techniques 2024年第4期35卷 29-45页

作者： Han Yin Xiao-Jing Liu teng-Fei Zhang School of Nuclear Science and Engineering Shanghai Jiao Tong UniversityShanghai 2002040China

The heterogeneous variational nodal method(HVNM)has emerged as a potential approach for solving high-fidelity neutron transport ***,achieving accurate results with HVNM in large-scale problems using high-fidelity models has been challenging due to the prohibitive computational *** paper presents an efficient parallel algorithm tailored for HVNM based on the Message Passing Interface *** algorithm evenly distributes the response matrix sets among processors during the matrix formation process,thus enabling independent construction without *** the formation tasks are completed,a collective operation merges and shares the matrix sets among the *** the solution process,the problem domain is decomposed into subdomains assigned to specific processors,and the red-black Gauss-Seidel iteration is employed within each subdomain to solve the response matrix ***-to-point communication is conducted between adjacent subdomains to exchange data along the *** accuracy and efficiency of the parallel algorithm are verified using the KAIST and JRR-3 test *** results obtained with multiple processors agree well with those obtained from Monte Carlo *** parallelization of HVNM results in eigenvalue errors of 31 pcm/-90 pcm and fission rate RMS errors of 1.22%/0.66%,respectively,for the 3D KAIST problem and the 3D JRR-3 *** addition,the parallel algorithm significantly reduces computation time,with an efficiency of 68.51% using 36 processors in the KAIST problem and 77.14% using 144 processors in the JRR-3 problem.

关键词： Neutron transport Variational nodal method Parallelization KAIST JRR-3

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Distributed Source-Load-Storage Cooperative Low-Carbon Scheduling Strategy Considering Vehicle-to-Grid Aggregators

引用

Journal of Modern Power Systems and Clean Energy 2024年第2期12卷 440-453页

作者： Xiao Xu Ziwen Qiu teng Zhang Hui Gao School of Automation Nanjing University of Posts and TelecommunicationsNanjing210023China

The vehicle-to-grid(V2G)technology enables the bidirectional power flow between electric vehicle(EV)batteries and the power grid,making EV-based mobile energy storage an appealing supplement to stationary energy storage ***,the stochastic and volatile charging behaviors pose a challenge for EV fleets to engage directly in multi-agent *** unlock the scheduling potential of EVs,this paper proposes a source-load-storage cooperative low-carbon scheduling strategy considering V2G *** uncertainty of EV charging patterns is managed through a rolling-horizon control framework,where the scheduling and control horizons are adaptively adjusted according to the availability periods of ***,a Minkowski-sum based aggregation method is employed to evaluate the scheduling potential of aggregated EV fleets within a given scheduling *** method effectively reduces the variable dimension while preserving the charging and discharging constraints of individual ***,a Nash bargaining based cooperative scheduling model involving a distribution system operator(DSO),an EV aggregator(EVA),and a load aggregator(LA)is established to maximize the social welfare and improve the low-carbon performance of the *** model is solved by the alternating direction method of multipliers(ADMM)algorithm in a distributed manner,with privacy of participants fully *** proposed strategy is proven to achieve the objective of low-carbon economic operation.

关键词： Electric vehicle(EV) low-carbon scheduling mobile storage system Nash bargaining power flexibility alternating direction method of multipliers(ADMM).

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：