检索结果-南通市图书馆

Analysis on application law of dampness-removing traditional Chinese medicines in treatment of coronavirus disease 2019

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 Herbal Medicines 2021年第4期13卷 518-524页

作者： Er-wei Hao Zi-xia Su Yan-ling Gong Zheng-cai Du Xue Yang Chun-tao Huang xiao-tao hou Jia-gang Deng Guangxi Key Laboratory of Efficacy Study on Chinese Materia Medica Guangxi University of Chinese MedicineNanning 530001China Collaborative Innovation Center for Research on Functional Ingredients of Agricultural Residues Guangxi University of Chinese MedicineNanning 530200China Guangxi Key Laboratory of TCM Formulas Theory and Transformation for Damp Diseases Guangxi University of Chinese MedicineNanning 530001China Guangxi International Zhuang Medical Hospital Guangxi University of Chinese MedicineNanning 530201China

Objective:Coronavirus Disease 2019(COVID-19)has been diagnosed as an epidemic disease characterized by cold and dampness pathogens in TCM *** to many Chinese medicines with different functions were used in the treatment of COVID-19,it is very important to find the law of application of dampremoving traditional Chinese medicine with high frequency application,with view to providing a reference for the use and research of Chinese medicine to further control the ***:The publicly released diagnosis and treatment programs issued by the National Health Commission and Health Commission of provinces,autonomous regions and municipalities,and Chinese herbs prescription information in these were collected,a database was established,and Excel and Graphpad 8.0 software were used to analyze the frequency of use of various Chinese medicines,the frequency and property characters including five flavors(bitter,pungent,sweet,sour,and salty)and four natures(warm,hot,cool,and cold)and channel tropisms of Chinese medicine for removing ***:A total of 137 prescriptions of Chinese medicine for treating COVID-19 were collected,including178 TCMs showing functions of resolving phlegm,relieving cough and asthma,resolving dampness,clearing damp and inducing dieresis,clearing heat,tonifying deficiency,and relieving exterior syndrome,in which the TCMs with the first four functions that we called the dampness-removing TCMs,accounted for 35.78%.Also a number of TCMs in the rest functions showed *** first four functions were divided into subfunctions including aromatic resolving dampness,clearing heat and drying dampness,drying dampness and tonifying spleen qi,drying dampness and removing phlegm,inducing diuresis and relieving swelling,inducing diuresis and relieving exterior *** them,the most frequently used TCMs was Ephedrae Herba,followed by Citri Reticulatae Pericarpium,Pogostemonis Herba,Pinelliae Rhizoma,Poria,Scutellariae Radix,and

关键词： application law COVID-19 dampness-removing traditional Chinese medicine

Investigation of high rate mechanical flow followed by ignition for high-energy propellant under dynamic extrusion loading

在线全文

学校读者我要写书评

暂无评论

Defence Technology（防务技术） 2024年第2期32卷 336-347页

作者： Liying Dong Yanqing Wu Kun Yang xiao hou State Key Laboratory of Explosion Science and Technology Beijing Institute of TechnologyBeijing 100081China School of Aerospace Engineering Beijing Institute of TechnologyBeijing 100081China

Investigating the ignition response of nitrate ester plasticized polyether(NEPE) propellant under dynamic extrusion loading is of great significant at least for two cases. Firstly, it helps to understand the mechanism and conditions of unwanted ignition inside charged propellant under accident ***, evaluates the risk of a shell crevice in a solid rocket motor(SRM) under a falling or overturning scene. In the present study, an innovative visual crevice extrusion experiment is designed using a dropweight apparatus. The dynamic responses of NEPE propellant during extrusion loading, including compaction and compression, rapid shear flow into the crevice, stress concentration, and ignition reaction, have been firstly observed using a high-performance high-speed camera. The ignition reaction is observed in the triangular region of the NEPE propellant sample above the crevice when the drop weight velocity was 1.90 m/s. Based on the user material subroutine interface UMAT provided by finite element software LS-DYNA, a viscoelastic-plastic model and dual ignition criterion related to plastic shear dissipation are developed and applied to the local ignition response analysis under crevice extrusion conditions. The stress concentration occurs in the crevice location of the propellant sample, the shear stress is relatively large, the effective plastic work is relatively large, and the ignition reaction is easy to occur. When the sample thickness decreases from 5 mm to 2.5 mm, the shear stress increases from 22.3 MPa to 28.6 MPa, the critical value of effective plastic work required for ignition is shortened from 1280 μs to 730 μs, and the triangular area is easily triggering an ignition reaction. The propellant sample with a small thickness is more likely to stress concentration, resulting in large shear stress and effective work, triggering an ignition reaction.

关键词： NEPE propellant Crevice extrusion Shear flow Sample thickness Ignition reaction

Curved anisotropic polaritons

在线全文

学校读者我要写书评

暂无评论

Frontiers of physics 2024年第3期19卷 217-224页

作者： tao hou Yixiao Ge Shuwen Xue Huanyang Chen Department of Physics and Institute of Electromagnetics and Acoustics Xiamen UniversityXiamen 361005China Jiujiang Research Institute of Xiamen University Jiujiang 332000China

The curved surface has emerged as new research platform for understanding and manipulating novel electromagnetic behaviors in complex media. In this paper, we explore the anisotropic polaritons on the spherical surface based on Maxwell’s fish-eye metric through stereographic projection. Additionally, this phenomenon can be extended to spindle surface by conformal mapping. Our calculations and simulations demonstrate the elliptic and hyperbolic polaritons, excited by an electric dipole on the sphere, will self-focus or focus on the poles on the sphere affected by anisotropic permittivity. Furthermore, we reveal the optical singularity nature of the curved hyperbolic polaritons from the perspective of transformation optics by obtaining the equivalent optical refractive index profiles and the particle potential energy. Based on natural anisotropic materials and metamaterials, the curved polaritons have potential applications in curved surface focusing and chaos regulation. This work not only bridges the transformation optics and anisotropic polaritons at curved surface, but also provides a new route to surface optical field manipulation.

关键词： anisotropic polaritons transformation optics curved surface

Recent advances in the synthesis and application of N-heterocyclic carbene-based molecular cages

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 Chemistry 2024年第5期67卷 1510-1523页

作者： Qiongjie Chai Lixin Duan Yanzhe Ma Tianheng hou tao Tu Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Department of ChemistryFudan UniversityShanghai 200438China State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic ChemistryChinese Academy of SciencesShanghai 200032China

N-Heterocyclic carbene(NHC)-based cages have emerged as a prominent and dynamic research area within the research field of chemistry. Leveraging the distinctive electronic and steric properties of NHC ligands, the design, synthesis, and application of these corresponding cages have garnered substantial scholarly interest. In recent years, we have witnessed the successful fabrication of diverse NHC-based cages through a range of synthetic methodologies, which hold significant potential for applications in molecular recognition and catalysis. In this review, we delve into the foundational synthetic strategies that underlie the creation of NHC-based cages, employing approaches encompassing metal–NHC chelation, coordination assembly,and covalent bonding. Additionally, we compile the diverse applications of these cages within catalytic processes and molecular recognition. Lastly, we shed light on the current limitations of synthesis and outline future trends in the development of NHCbased cages.

关键词： N-heterocyclic carbene molecular cages supramolecular chemistry synthetic strategies applications

Constrained clustering with weak label prior

在线全文

学校读者我要写书评

暂无评论

Frontiers of Computer Science 2024年第3期18卷 117-132页

作者： Jing ZHANG Ruidong FAN Hong tao Jiacheng JIANG Chenping hou College of Sciences National University of Defense TechnologyChangsha 410073China

Clustering is widely exploited in data *** has been proved that embedding weak label prior into clustering is effective to promote its *** researches mainly focus on only one type of ***,in many real scenarios,two kinds of weak label prior information,e.g.,pairwise constraints and cluster ratio,are easily obtained or already *** to incorporate them to improve clustering performance is important but rarely *** propose a novel constrained Clustering with Weak Label Prior method(CWLP),which is an integrated *** the unified spectral clustering model,the pairwise constraints are employed as a regularizer in spectral embedding and label proportion is added as a constraint in spectral *** approximate a variant of the embedding matrix more precisely,we replace a cluster indicator matrix with its scaled *** of fixing an initial similarity matrix,we propose a new similarity matrix that is more suitable for deriving clustering *** for the theoretical convergence and computational complexity analyses,we validate the effectiveness of CWLP through several benchmark datasets,together with its ability to discriminate suspected breast cancer patients from healthy *** experimental evaluation illustrates the superiority of our proposed approach.

关键词： clustering weak label prior cluster ratio pairwise constraints

Remote sensing of air pollution incorporating integrated-path differential-absorption and coherent-Doppler lidar

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Defence Technology（防务技术） 2024年第1期31卷 594-601页

作者： Ze-hou Yang Yong Chen Chun-li Chen Yong-ke Zhang Ji-hui Dong tao Peng xiao-feng Li Ding-fu Zhou School of Physics Beijing Institute of TechnologyBeijing 100081China Southwest Institute of Technical Physics Chengdu 610041SichuanChina School of Optics and Photonics Beijing Institute of TechnologyBeijing 100081China

An innovative complex lidar system deployed on an airborne rotorcraft platform for remote sensing of atmospheric pollution is proposed and *** system incorporates integrated-path differential absorption lidar(DIAL) and coherent-doppler lidar(CDL) techniques using a dual tunable TEA CO_(2)laser in the 9—11 μm band and a 1.55 μm fiber *** combining the principles of differential absorption detection and pulsed coherent detection,the system enables agile and remote sensing of atmospheric *** static tests validate the system’s real-time detection capabilities,including the measurement of concentration-path-length product(CL),front distance,and path wind speed of air pollution plumes over long distances exceeding 4 *** experiments is conducted with the *** of the pollutant concentration and the wind field is carried out in an approximately 1 km slant range over scanning angle ranges from 45°to 65°,with a radial resolution of 30 m and10 *** test results demonstrate the system’s ability to spatially map atmospheric pollution plumes and predict their motion and dispersion patterns,thereby ensuring the protection of public safety.

关键词： Differential absorption LIDAR Coherent Doppler lidar Remoting sensing Atmospheric pollution

Boosting oxygen vacancies by modulating the morphology of Au decorated In_(2)O_(3)with enhanced CO_(2)hydrogenation activity to CH_(3)OH

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2024年第6期140卷 91-102页

作者： Ruxian hou Jiewen xiao Qian Wu Tianyu Zhang Qiang Wang Beijing Key Lab for Source Control Technology of Water Pollution College of Environmental Science and EngineeringBeijing Forestry UniversityBeijing 100083China Engineering Research Center for Water Pollution Source Control&Eco-remediation College of Environmental Science and EngineeringBeijing Forestry UniversityBeijing 100083China

CO_(2)hydrogenation to methanol has become one of the most promising ways for CO_(2)utilization,however,the CO_(2)conversion rate and methanol selectivity of this reaction still need to be improved for industrial *** we investigated the structure-activity relationship for CO_(2)conversion to methanol of In_(2)O_(3)-based catalysts by modulating morphology and decorating *** different Au/In_(2)O_(3)catalysts were prepared,their activity follow the sequence of Au/In_(2)O_(3)-nanosphere(Au/In_(2)O_(3)-NS)>Au/In_(2)O_(3)-nanoplate(Au/In_(2)O_(3)-NP)>Au/In_(2)O_(3)-hollow microsphere(Au/In_(2)O_(3)-HM).Au/In_(2)O_(3)-NS exhibited the best performance with good CO_(2)conversion of 12.7%,high methanol selectivity of 59.8%,and large space time yield of 0.32 g CH_(3)OH/(hr·gcat)at 300℃.The high performance of Au/In_(2)O_(3)-NS was considered as the presence of *** contributes to the creation of more surface oxygen vacancies,which further promoted the CO_(2)adsorption and facilitated CO_(2)activation to form the formate intermediates towards *** work clearly suggests that the activity of In_(2)O_(3)catalyst can be effective enhanced by structure engineering and Au decorating.

关键词： CO_(2)hydrogenation Methanol Au/In_(2)O_(3) Morphology Oxygen vacancies

A Preliminary Study on Anti-Colorectal Cancer Effect and Molecular Mechanism of Aegiceras Corniculatum Extract

在线全文

学校读者我要写书评

暂无评论

World Journal of Traditional Chinese Medicine 2023年第4期9卷 404-414页

作者： De‑Chao Tan xiao‑tao hou Hua Luo Yi‑Wei Chen Zheng‑Cai Du Jin‑Ling Xie Lin‑Yao Wei Chi-Teng Vong xiao‑Yan Wen Er‑Wei Hao Jia‑Gang Deng Guangxi Key Laboratory of Efficacy Study on Chinese Materia Medica Guangxi University of Chinese MedicineNanningChina Guangxi Collaborative Innovation Center of Research on Functional Ingredients of Agricultural Residues NanningChina Institute of Chinese Medical Sciences State Key Laboratory of Quality Research in Chinese MedicineUniversity of MacaoMacaoChina Sino‑Canada Joint Zebrafish Lab for Chinese Herbal Drug Screening Guangxi University of Chinese MedicineNanningChina Zebrafish Center for Advanced Drug Discovery Keenan Research Center for Biomedical ScienceLi Ka Shing Knowledge InstituteSt.Michael’s HospitalTorontoOntarioCanada

Objective:To study the inhibitory effects on colorectal cancer(CRC)and the underlying mechanism of the petroleum ether extract of Aegiceras corniculatum leaves(PACL).Materials and Methods:The effect of PACL on the proliferation of CRC cell lines DLD-1,HT-29,and SW480was measured by 3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium assay and colony-forming *** then,a wound-healing assay was used to measure the migration ability of three CRC *** cell cycle and apoptosis of three CRC cells were measured by PI/RNase staining and annexin V-FITC/double staining,respectively,and the intrinsic apoptosis pathway was studied by the Western *** anti-CRC effect of PACL in vivo was evaluated by HT-29 xenograft zebrafish ***:PACL inhibited cell viability and proliferation in DLD-1,HT-29,and SW480 cells in a dose-and time-dependent *** can inhibit cell migration in DLD-1and SW480 cells but not in the less mobile phenotype cell *** treatment resulted in cell cycle arrest of DLD-1 and HT-29 cells in the G2/M ***,PACL can induce apoptosis in all three CRC cells,which may be achieved by regulating the intrinsic apoptosis pathway mediated by mitochondria and the endoplasmic ***,the tumor sizes were decreased after treatment with PACL and PACL combined with fluorouracil in HT-29 xenograft zebrafish ***:These findings suggested that PACL may exert its anti-CRC effect by inducing apoptosis through the intrinsic apoptosis pathway and show a significant anti-CRC effect in vitro and in vivo,so it might be potentially developed as an anti-CRC agent.

关键词： Aegiceras corniculatum apoptosis cell cycle colorectal cancer zebrafish xenograft

Intelligent casting:Empowering the future foundry industry

在线全文

学校读者我要写书评

暂无评论

China Foundry 2024年第5期21卷 409-426页

作者： Jin-wu Kang Bao-lin Liu tao Jing hou-fa Shen School of Materials Science and Engineering Key Laboratory for Advanced Materials Processing TechnologyTsinghua UniversityBeijing 100084China

Emerging technological advances are reshaping the casting sector in latest *** technology is evolving towards intelligent casting paradigm that involves automation,greenization and intelligentization,which attracts more and more attention from the academic and industry *** this paper,the main features of casting technology were briefly summarized and forecasted,and the recent developments of key technologies and the innovative efforts made in promoting intelligent casting process were ***,the technical visions of intelligent casting process were also put *** key technologies for intelligent casting process comprise 3D printing technologies,intelligent mold technologies and intelligent process control *** future,the intelligent mold that derived from mold with sensors,control devices and actuators will probably incorporate the Internet of Things,online inspection,embedded simulation,decision-making and control system,and other technologies to form intelligent cyber-physical casting system,which may pave the way to realize intelligent *** is promising that the intelligent casting process will eventually achieve the goal of real-time process optimization and full-scale control,with the defects,microstructure,performance,and service life of the fabricated castings can be accurately predicted and tailored.

关键词： intelligent casting 3D printing intelligent mold process control cyber-physical casting system embedded simulation