检索结果-南通市图书馆

Journal of Geoscience and Environment Protection 2022年第6期10卷 234-252页

作者： Assikohon Pulchérie Gouzile Martial Bama bi Yourou Guillaume Zamina Ellélé Aimé Yapi Gneneyougo Emile Soro bi tie albert goula tiembré Issiaka National Institute of Public Hygiene Abidjan C&#244 te d’Ivoire Félix Houphouë t Boigny University Abidjan C&#244 te d’Ivoire Nangui-Abrogoua University Abidjan C&#244 te d’Ivoire

Malaria, a febrile human disease transmitted by female anopheles whose ecology is linked to water, is a major public health problem in Côte d’Ivoire, more precisely in the Marahoué region located in the southwest of the country. In order to effectively control this disease, it is necessary to understand the etiology and the diffusion pattern of the vectors. This justifies this study, which proposes to determine the areas at risk of malaria transmission in order to carry out an effective fight against this disease in this region of Côte d’Ivoire. To achieve this, a combined approach of geographic information systems and multicriteria analysis was adopted. The analysis reveals that the south and northwest of the Marahoué region present a high risk for malaria transmission. This risk is linked to indicators such as climatic factors that cover 48.36% of the study area, environmental factors such as vegetation cover (NDVI), soil moisture (NDWI), altitude, hydrography (water point) and population that covers 55.29% of the area and land use. Also, the results indicated that 50.70% of the region has favorable conditions for malaria transmission. Overall, climatic and environmental indicators are the risk factors associated with the resurgence of malaria.

关键词： Mapping Palustrum Multicriteria Analysis Marahoué Ivory Coast

Comparative Study of the Physicochemical Quality of the Waters of the Méné River (Sassandra Watershed, Ivory Coast) in the Dry Season and in the Rainy Season

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 Environmental Protection 2024年第6期15卷 738-746页

作者： Konan Lopez Kouamé Gansso Valentin Akilinon Olivier Simon Mananga Kombo Gneneyougo Emile Soro bi Tié albert goula Science and Technology Department Alassane Ouattara University Bouak Ivory Coast Environmental Sciences Laboratory Nangui Abrogoua University Abidjan Ivory Coast

The study carried out on the waters of the Méné River led to an overall assessment of its water quality during the dry season and the rainy season. The analysis focused on eight (8) water samples taken from the river during a period of dry season (January-February) and a period of rainy season (June and September). The various physicochemical parameters were measured according to Afnor standardized methods. The readings of temperature, turbidity, pH and conductivity made it possible to account for the disturbances occurring in water quality. A temporal variation correlated with the seasons (dry or rainy) is noted. Turbidity depends on the concentration of suspended solids (SS) in the water and drained particles and therefore on the seasons. Just like the temperature, the conductivity changes with the season. The waters of the Méné River are generally acidic. The results obtained show that there is a low level of pollution by chlorides, phosphates, nitrites and nitrates. A slight pollution of the waters of Méné in organic matter (chemical oxygen demand values are less than 25 mg∙L−1 during dry season and 32.33 ± 4.73 mg∙L−1 during rainy season) was observed. The concentrations of metallic trace elements such as iron, manganese and aluminum indicate significant pollution of these waters by these elements. Overall, the waters of the Méné River are of satisfactory quality because all the physicochemical parameters analyzed have values below standards during the dry season as well as during the rainy season with the exception of COD and a few metallic trace elements.

关键词： Méné Physicochemical Parameters River Season Water Quality

Demonstration of controlled high-dimensional quantum teleportation

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China(Physics,Mechanics & Astronomy) 2024年第3期67卷 1-6页

作者： Min-Yu Lv Xiao-Min Hu Neng-Fei Gong tie-Jun Wang Yu Guo bi-Heng Liu Yun-Feng Huang Chuan-Feng Li Guang-Can Guo CAS Key Laboratory of Quantum Information University of Science and Technology of ChinaHefei 230026China CAS Centerfor Excellence in Quantum Information and Quantum Physics University of Science and Technology of ChinaHefei230026China Hefei National Laboratory University of Science and Technology of ChinaHefei 230088China State Key Laboratory of Information Photonics and Optical Communications School of ScienceBeijing University of Posts and TelecommunicationsBeijing 100876China

Controlled quantum teleportation(CQT), which is regarded as the prelude and backbone for a genuine quantum internet, reveals the cooperation, supervision, and control relationship among the sender, receiver, and controller in the quantum network within the simplest unit. Compared with low-dimensional counterparts, high-dimensional CQT can exhibit larger information transmission capacity and higher superiority of the controller's authority. In this article, we report a proof-of-principle experimental realization of three-dimensional(3D) CQT with a fidelity of 97.4% ± 0.2%. To reduce the complexity of the circuit, we simulate a standard 4-qutrit CQT protocol in a 9×9-dimensional two-photon system with high-quality operations. The corresponding control powers are 48.1% ± 0.2% for teleporting a qutrit and 52.8% ± 0.3% for teleporting a qubit in the experiment, which are both higher than the theoretical value of control power in 2-dimensional CQT protocol(33%). The results fully demonstrate the advantages of high-dimensional multi-partite entangled networks and provide new avenues for constructing complex quantum networks.

关键词： high dimension quantum information quantum teleportation quantum nonlocality

Rapid and controllable in-situ self-assembly of main-group metal nanofilms for highly efficient CO_(2)electroreduction to liquid fuel in flow cells

在线全文

学校读者我要写书评

暂无评论

Nano Research 2024年第6期17卷 5718-5725页

作者： Miao Wang Huaizhu Wang Yaoda Wang Junchuan Liang Mengfei Zhu Jiarui Li Zuoxiu tie Zhong Jin State Key Laboratory of Coordination Chemistry MOE Key Laboratory of Mesoscopic ChemistryMOE Key Laboratory of High Performance Polymer Materials and TechnologyJiangsu Key Laboratory of Advanced Organic MaterialsTianchang New Materials and Energy Technology Researc

The electrocatalytic reduction of CO_(2)is a promising pathway to generate renewable fuels and ***,its advancement is impeded by the absence of electrocatalysts with both high selectivity and ***,we present a scalable in-situ thermal evaporation technique for synthesizing series of bi,In,and Sn nanofilms on carbon felt(CF)substrates with a high-aspect-ratio *** resulting main-group metal nanofilms exhibit a homogeneously distributed and highly exposed catalyst surface with ample active sites,thereby promoting mass transport and ad-/desorption of reaction *** from the unique fractal morphology,the bi nanofilms deposited on CF exhibit optimal catalytic activities for CO_(2)electroreduction among the designed metal nanofilms electrodes,with the highest Faradaic efficiency of 96.9%for formate production at−1.3 V *** hydrogen electrode(RHE)in *** an industrially relevant current density of 221.4 mA·cm−2 in flow cells,the bi nanofilms retain a high Faradaic efficiency of 81.7%at−1.1 V(***)and a good long-term stability for formate ***,a techno-economic analysis(TEA)model shows the potential commercial viability of electrocatalytic CO_(2)conversion into formate using the bi nanofilms *** results offer a green and convenient approach for in-situ fabrication of stable and inexpensive thin-film catalysts with a fractal structure applicable to various industrial settings.

关键词： CO_(2)electroreduction non-noble metal nanofilms flow cells efficiency and selectivity techno-economic analysis

Comparative Study of the Physicochemical Quality of the Waters of the Méné River(Sassandra Watershed, Ivory Coast) in the Dry Season and in the Rainy Season

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

基于语言和视觉融合Transformer的指代图像分割

Journal of Environmental Protection（环境保护） 2024年第6期 738页

作者： Konan Lopez Kouamé Gansso Valentin Akilinon Olivier Simon Mananga Kombo Gneneyougo Emile Soro bi Tié albert goula

来源：博看期刊评论

在线全文

博看期刊

学校读者我要写书评

暂无评论

传感技术学报 2024年第7期37卷 1193-1201页

作者：段勇刘铁沈阳工业大学信息科学与工程学院辽宁沈阳110870

针对指代图像分割任务中存在语言表达歧义、多模态特征对齐不充分、对图像整体理解不全面等问题,提出一种基于Transformer特征融合与对齐的多模态深度学习模型。该模型使用优化的Darknet53图像特征提取骨干网络,加强了对全局特征理解能... 详细信息

针对指代图像分割任务中存在语言表达歧义、多模态特征对齐不充分、对图像整体理解不全面等问题,提出一种基于Transformer特征融合与对齐的多模态深度学习模型。该模型使用优化的Darknet53图像特征提取骨干网络,加强了对全局特征理解能力。使用了卷积神经网络结构、双向门控循环单元bi-GRU结构和自注意力机制相互结合的语言特征提取结构,挖掘深层次语义特征,消除语言表达的歧义性。构建了基于Transformer的特征对齐结构,以提升模型的分割细节和分割精度。最后,采用平均的交并比mIoU和在不同阈值的识别精度作为模型评估指标,通过实验证明所提模型可以充分融合多模态的特征,理解多模态特征的深层语义信息,模型识别结果更加准确。

关键词：深度学习指代图像分割自然语言处理注意力机制 Transformer模型

TanshinoneⅡA improves distribution and anti-tumor efficacy of pegylated liposomal doxorubicin via normalizing the structure and function of tumor vasculature in hepa1-6 hepatoma mice model

在线全文

学校读者我要写书评

暂无评论

Journal of Traditional Chinese Medicine 2018年第6期38卷 815-822页

作者： Zhang Ying tie MingHui bi Feng Wang Ke Department of Integrated Traditional Chinese and Western Medicine West China Hospital Sichuan University Department of Abdominal Oncology Cancer Center West China Hospital Sichuan University

OBJECTIVE: To investigate whether the Tandistribution and anti-tumor Ⅱef A could improve the ficacy of Pegylated Liposomal Doxorubicin(PLD) via normalizing the structure and function of vasculature in Hepa1-6 hepatoma mice ***: Hepa1-6 hepatoma-bearing mice were treated with TanⅡA for 14 d. Distribution and anti-tumor efficacy of PLD, and the structure and function of the tumor vasculature were evaluated using various ***: TanⅡ A significantly reduced the micro-vessel density(MVD). After Tan vascular walls were betteⅡr s A treatment,the tumor tructured, as the increased coverage of the pericytes and the promoted contact of the basement membrane and endothelial cell. Functional tests showed that tumor hypoxia was improved and the exudation amount of Evans blue in the parenchyma of the tumor decreased. In addition, mice treated with TanA had greater PLD penetration distance intratumoⅡrally. Furthermore, combined therapy of Tanibited tumor growth.ⅡA and PLD significantly inhCONCLUSION: This study suggests that Tanasculature andⅡ h A helps normalizing the tumor vas therapeutic potential in increasing the distribution of chemotherapy drug in the tumor.

关键词： Liver neoplasms,experimental TanshinoneⅡA Vascular normalization Pegylated liposomal doxorubicin

Heuristic Virtual Machine Allocation for Multi-tier Ambient Assisted Living Applications in a Cloud Data Center

在线全文

学校读者我要写书评

暂无评论

China Communications 2016年第5期13卷 56-65页

作者： Jing bi Haitao Yuan Ming tie Xiao Song School of Software Engineering Beijing University of TechnologyBeijing 100124China Beijing Engineering Research Center for IoT Software and Systems Beijing 100124China School of Software Engineering Beijing Jiaotong UniversityBeijing 100044China Science and Technology on Space Physics Laboratory Beijing 100076China Beijing Institute of Near space Vehicle's Systems Engineering Beijing 100076China School of Automation Science and Electrical Engineering Beihang UniversityBeijing 100191China

Cloud computing provides the essential infrastructure for multi-tier Ambient Assisted Living(AAL) applications that facilitate people's lives. Resource provisioning is a critically important problem for AAL applications in cloud data centers(CDCs). This paper focuses on modeling and analysis of multi-tier AAL applications, and aims to optimize resource provisioning while meeting requests' response time constraint. This paper models a multi-tier AAL application as a hybrid multi-tier queueing model consisting of an M/M/c queueing model and multiple M/M/1 queueing models. Then, virtual machine(VM) allocation is formulated as a constrained optimization problem in a CDC, and is further solved with the proposed heuristic VM allocation algorithm(HVMA). The results demonstrate that the proposed model and algorithm can effectively achieve dynamic resource provisioning while meeting the performance constraint.

关键词： ambient assisted living cloud computing resource provisioning virtual machine heuristic optimization

“感觉结构”的恒定与嬗变:近期小说中繁密的浮世绘画卷与精神叙事的潜力

在线全文

学校读者我要写书评

暂无评论

学术月刊 2024年第8期56卷 126-134页

作者：王宏图方铁复旦大学中文系上海200433 中国中福会出版社有限公司上海200031

对于世俗生活作繁密的浮世绘式描绘是张楚的新作《云落图》的醒目特性,鲜明体现了当今国人根深蒂固的“感觉结构”。它体现了自古以来儒道互补的思想观念,无法容纳超越现实的精神性叙事。毕飞宇的《欢迎来到人间》聚焦手术失利的医师傅... 详细信息

对于世俗生活作繁密的浮世绘式描绘是张楚的新作《云落图》的醒目特性,鲜明体现了当今国人根深蒂固的“感觉结构”。它体现了自古以来儒道互补的思想观念,无法容纳超越现实的精神性叙事。毕飞宇的《欢迎来到人间》聚焦手术失利的医师傅睿的精神拯救之路,但最终他寻觅到的只是暂时的超脱。而格非的《登春台》对主人公周振遐精神顿悟的展示要丰富、详尽得多,整部作品臻于传统文化孜孜以求的大圆之美,成为“中国式诗意”的范本。艾伟的《镜中》与《登春台》有着异曲同工之妙,向世人提供了一条貌似可行的精神拯救之路。但要孵化出新型、富有震撼力的中国式审美经验,还需要作家不懈的探索。

关键词：近期小说感觉结构浮世绘画卷精神叙事

Fracture Mechanism of the Formation with a Natural Flaw Under a Single-Tooth Cutting

在线全文

学校读者我要写书评

暂无评论

Acta Mechanica Solida Sinica 2020年第5期33卷 719-730页

作者： Siqi Li Wei Li tie Yan Fuqing bi Huan Zhao Xin Ling Institute of Petroleum Engineering Northeast Petroleum UniversityDaqing163318HeilongjiangChina The Fifth Oil Production Plant of Daqing Oilfield Daqing163513HeilongjiangChina

The process of a single-tooth cutting formation is taken as the representative to analyze the fracture mechanism of the formation with natural flaws under the PDC drill *** modeling of the stress field distribution of the formation under a single tooth is proposed ***,the modeling of the stress intensity factor K,T-stress and the initiation angleθof the flaw under two far-field compressive loads in two cases are presented based on the mode-II ***,the results of theoretical calculations and simulations are given and *** on the analysis undertaken,it can be concluded that the confinement ratioλapplying on the flaw changes nonlinearly with the variation inα+φ.The relationship between the dimensionless ratioβx/βy of T-stress and the rotational polar angleφis a parabola with an upward *** the direction of the cutting force is consistent with the flaw,the stress intensity factor K and the initiation angleθat the tip of the flaw reach the *** addition,the angle between the cutting force and the flaw weakens the T-stress and inhibits the crack initiation and propagation of the *** results of numerical simulations show good agreement with theoretical calculations.

关键词： Single-tooth cutting Stress field Stress intensity factor Initiation angle Extended finite element