检索结果-南通市图书馆

Synthesis and characterization of the natural active ingredient tetrahydroberberine:(C20H22NO4)·(CH3COOH)·Cl

在线全文

学校读者我要写书评

暂无评论

Synthesis and characterization of the natural active ingredi...

试论“五四”前后学术界对“进化史观”的反省——以章太炎、梁启超、柳诒徴的史学思想为例

中国晶体学会第六届学术年会暨会员代表大会——第六届全国晶型药物研发技术学术研讨会

作者： yu-nan Zhang Da-jun Zhang yu Zhang Institute of Pharmacy in Heilongjiang Province Jiamusi University

Tetrahydroberberine(THB),also known as canadine and xanthopuccine,is a naturally occurring alkaloid that occurs in widely distributed shrubs,both deciduous and evergreen,of the genus Berberis and

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

首都师范大学学报（社会科学版） 2006年第S2期 65-71页

作者：于楠首都师范大学历史系

五四前后,章太炎、梁启超、柳诒徵在不同的历史、社会境遇下,分别运用:佛教、新康德主义、《易传》等理论资源,对以“进化论”为核心的现代性思想进行了严肃的批评。这些批评形成了一道独特的思想景观,在深入分析这些思想家的批评过程中... 详细信息

五四前后,章太炎、梁启超、柳诒徵在不同的历史、社会境遇下,分别运用:佛教、新康德主义、《易传》等理论资源,对以“进化论”为核心的现代性思想进行了严肃的批评。这些批评形成了一道独特的思想景观,在深入分析这些思想家的批评过程中,我们能看到中国近代思想史的丰富性和多样性。

关键词：章太炎梁启超柳诒徵进化史观

Design of a motorised plasma delivery system for ultra-precision large optical fabrication

在线全文

学校读者我要写书评

暂无评论

International Journal of Extreme Manufacturing 2020年第4期2卷 101-106页

作者： Hui Zhou Adam Bennett Marco Castelli Renaud Jourdain Jiang Guo nan yu Surface Engineering and Precision Institute Cranfield UniversityBedfordUnited Kingdom Manufacturing Technology Centre(MTC) CoventryUnited Kingdom Key Laboratory for Precision and Non-traditional Machining Technology of Ministry of Education Dalian University of TechnologyDalianPeople’s Republic of China Centre of Micro/nano Manufacturing Technology University College DublinDublinIreland

A unique plasma figuring(PF)process was created and demonstrated at Cranfield University for manufacturing extremely large *** atmospheric pressure processing is faster and more cost-effective than other finishing processes;thus,providing an important alternative for large optical *** industrial scale manufacturing of thousands of ultra-precision metre-scale optics requires a robust PF machine:this requirement is achieved by making the plasma delivery system(PDS)performance *** this study,a dedicated PDS for large optical manufacturing was proposed to meet the industrial *** PDS is based on an L-type radiofrequency(RF)network,a power supply,and an inductively coupled plasma ***,the complexities of these technologies require an in depth understanding of the integrated components that from the PDS.A smart control system for the modified PDS was *** novel control system aims to make the characterization process deterministic:by automating the tuning of critical electrical components in the RF network,which is achieved by the use of in-line *** paper describes the main design *** PDS was tested with a good correlation between capacitance and RF *** robust PDS design enables a stable discharge of plasma with a low deviation of RF signals during the total15 hours’test.

关键词： plasma figuring inductively coupled plasma RF network plasma delivery system

同方期刊数据库

Antimicrobial activities of essential oil from Artemisiae argyi leaves

在线全文

学校读者我要写书评

暂无评论

Journal of Forestry Research 2006年第4期17卷 332-334页

作者： WANG Wei ZHANG Xue-ke WU nan FU yu-jie ZU yuan-gang Key Laboratory of Forest Plant Ecology Northeast Forestry University Hexing Road 26 150040 Harbin P.R.. China

A study was conducted to determine the antimicrobial activities of essential oil from Artemisiae argyi leaves. The sample of the essential oil was analyzed by GC-MS. From 18 compounds representing the oils, Eucalyptole （18.42%）, Spathulenol （14.32）, 4-Methyl-1-（1-methylethyl）-3-cyclohexen-1-ol （3.10%）, 3-Carene （2.64%） appeared as the main components. The screening of antimicrobial activity of the essential oil was evaluated using agar diffusion and broth microdilution methods. Gram-positive bacterial were more sensitive than gram-negative bacterial of the 8 microorganisms, and Staphylococcus aureus ATCC 6538 showed the lowest MIC （0.3125%） and MBC （0.625%）. In the disc diffusion assay, Staphylococcus epidermidis ATCC 49134 and Bacillus subtilis ATCC 6633 showed obvious inhibitory activity. Survival curve showed that, 2MIC ofArtemisiae argyi essential oil had a lethal effect on Candida albicans within the first 1 h. Results presented here suggest that the essential oil of Artemisiae argyi leaves possesses antimicrobial properties, and provides scientific foundations for exploition ofArtemisiae argyi.

关键词： Artemisiae argyi leaves Essential oil Antimicrobial activity

在线全文

学校读者我要写书评

暂无评论

三种模型级联的比较

原子能科学技术 2014年第11期48卷 1921-1927页

作者：张宇楠曾实清华大学工程物理系北京100084

模型级联在多组分同位素分离的级联理论研究中有着重要的地位。本文介绍了级联研究中三种常用的模型级联,即Q级联、准理想级联和相对丰度匹配级联,包括模型的背景和意义、基本性质、实际应用等。通过对比三种模型中一些关键参数的解析... 详细信息

模型级联在多组分同位素分离的级联理论研究中有着重要的地位。本文介绍了级联研究中三种常用的模型级联,即Q级联、准理想级联和相对丰度匹配级联,包括模型的背景和意义、基本性质、实际应用等。通过对比三种模型中一些关键参数的解析表达式以及分离特性,说明了三者具有很大的相似性和内在联系。对比结果表明,相对丰度匹配级联是准理想级联的一种特例,而Q级联虽是一连续流量级联,但类似于准理想级联,其各组分分流比近似为常数,且二者的分离特性均以相似的规律取决于一虚拟组分分子量M*,二者也可视为同一类级联形式。

关键词：同位素分离模型级联相似性

Recurrent fever and cutaneous nodules: leprosy masquerading as anti-neutrophil cytoplasmic antibodies associated vasculitis

在线全文

学校读者我要写书评

暂无评论

Chinese Medical Journal 2020年第16期133卷 2004-2006页

作者： Sheng-nan yu Jing Wang Rui Zheng Yi Liu Department of Rheumatology and Immunology Sichuan University West China HospitalChengduSichuan 610041China Department of Rheumatology and Immunology The First People’s Hospital of Yunnan ProvinceKunmingYunnan 650032China Department of Clinical Laboratory The First People’s Hospital of Yunnan ProvinceKunmingYunnan 650032China

To the Editor:In September of 2016,a 26-year-old farmer from yunnan Province with no medical or drug history exhibited painless cutaneous nodules on his *** the nodules gradually appeared on his limbs,face,and *** half a month,he had moderate to high-grade fever(39.5°C)and numbness of *** reported no coughing,diarrhea,arthralgia,and *** was no similar illness in his *** tests in a local hospital showed elevated white blood cell and neutrophil *** tests for infection were *** cytoplasmic antibodies(ANCA)and myeloperoxidase ANCA(MPO-ANCA)were *** computed tomography of chest was *** on the clinical and laboratory manifestations,he was diagnosed as ANCA-associated vasculitis(AAV)and was initially treated with intravenous methylprednisolone 80 mg/day and cyclophosphamide(0.4 g/2 weeks)for four times in the local *** the course of the treatment,fever and skin nodules were temporarily relieved,but reoccurred when prednisone tapered to 20 to 30 mg/*** recurrent fever,skin nodules,and numbness of limbs had lasted for 2 years,and thus,he was referred to the Sichuan University West China Hospital.

关键词： initially nodules neutrophil

Phosphorylation of MtRopGEF2 by LYK3 mediates MtROP activity to regulate rhizobial infection in Medicago truncatula

在线全文

学校读者我要写书评

暂无评论

Journal of Integrative Plant Biology 2021年第10期63卷 1787-1800页

作者： Mingxing Wang Huan Feng Peng Xu Qiujin Xie Jinpeng Gao Yanzhang Wang Xiaowei Zhang Jun Yang Jeremy DMurray Fengli Sun Chunyan Wang Ertao Wang nan yu College of Life and Environment Sciences Shanghai Normal UniversityShanghai 200234China National key Laboratory of Plant Molecular Genetics Center for Excellence in Molecular Plant SciencesInstitute of Plant Physiology and Ecologythe Chinese Academy of SciencesShanghai 200032China University of Chinese Academy of Sciences Beijing 100039China College of Forestry Northwest A&F UniversityYangling 712100China College of Agronomy Northwest A&F UniversityYangling 712100China

The formation of nitrogen-fixing no dules on legume roots requires the coordination of infection by rhizobia at the root epidermis with the initiation of cell divisions in the root *** infection,rhizobia attach to the tip of elongating root hairs which then curl to entrap the ***,the mechanism of root hair deformation and curling in response to symbiotic signals is still ***,we found that small GTPases(MtRac1/MtROP9 and its homologs)are required for root hair development and rhizobial infection in Medicago *** results show that the Nod factor receptor LYK3 phosphorylates the guanine nucleotide exchange factor MtRopGEF2 at S73 which is critical for the polar growth of root *** turn,phosphorylated MtRopGEF2 can activate *** MtRac1 was found to localize at the tips of root hairs and to strongly interact with LYK3 and *** together,our results support the hypothesis that MtRac1,LYK3,and NFP form a polarly localized receptor complex that regulates root hair deformation during rhizobial infection.

关键词： guanine nucleotide exchange factor ROP GTPase root hair deformation rhizobial infection

Full-order sliding mode control of uncertain chaos in a permanent magnet synchronous motor based on a fuzzy extended state observer

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2015年第11期24卷 157-162页

作者：陈强南余荣郑恒火任雪梅 College of Information Engineering Zhejiang University of Technology School of Automation Beijing Institute of Technology

A full-order sliding mode control based on a fuzzy extended state observer is proposed to control the uncertain chaos in the permanent magnet synchronous motor. Through a simple coordinate transformation, the chaotic PMSM model is transformed into the Brunovsky canonical form, which is more suitable for the controller design. Based on the fuzzy control theory, a fuzzy extended state observer is developed to estimate the unknown states and uncertainties, and the restriction that all the system states should be completely measurable is avoided. Thereafter, a full-order sliding mode controller is designed to ensure the convergence of all system states without any chattering problem. Comparative simulations show the effectiveness and superior performance of the proposed control method.

关键词： permanent magnet synchronous motor chaotic system sliding mode control fuzzy extended stateobserver

Adipose-derived stem cells in diabetic foot care:Bridging clinical trials and practical application

在线全文

学校读者我要写书评

暂无评论

World Journal of Diabetes 2024年第6期15卷 1162-1177页

作者： Song-Lu Tseng Lin Kang Zhu-Jun Li Li-Quan Wang Zi-Ming Li Tian-Hao Li Jie-yu Xiang Jiu-Zuo Huang nan-Ze yu Xiao Long Department of Plastic and Reconstructive Surgery Chinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100730China Department of Plastic and Reconstructive Surgery Peking Union Medical College HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100730China Biomedical Engineering Facility Institute of Clinical MedicinePeking Union Medical College HospitalChinese Academy of Medical Sciences BeijingBeijing 100021China

Diabetic foot ulcers(DFUs)pose a critical medical challenge,significantly impairing the quality of life of ***-derived stem cells(ADSCs)have been identified as a promising therapeutic approach for improving wound healing in *** extensive exploration of the mechanical aspects of ADSC therapy against DFU,its clinical applications remain *** this review,we aimed to bridge this gap by evaluating the use and advancements of ADSCs in the clinical management of *** review begins with a discussion of the classification and clinical management of diabetic foot *** then discusses the current landscape of clinical trials,focusing on their geographic distribution,reported efficacy,safety profiles,treatment timing,administration techniques,and dosing ***,the review discusses the preclinical strategies to enhance ADSC *** review shows that many trials exhibit biases in study design,unclear inclusion criteria,and intervention *** conclusion,this review underscores the potential of ADSCs in DFU treatment and emphasizes the critical need for further research and refinement of therapeutic approaches,with a focus on improving the quality of future clinical trials to enhance treatment outcomes and advance the field of diabetic wound care.

关键词： Adipose-derived stem cells Diabetic foot ulcers Wound healing Clinical