检索结果-南通市图书馆

Antimicrobial and antispasmodic activity of leaf extract and fractions of Stachytarpheta cayennensis

Asian pacific Journal of Tropical Medicine 2010年第3期3卷 189-192页

作者： Okoye TC Akah pa Okoli co Ezike AC Mbaoji FN Department of Pharmacology & Toxicology Faculty of Pharmaceutical SciencesUniversity of Nigeria

Objective:To investigate the antimicrobial activity of the methanol leaf extract(ME),n-hexane fraction(HF),ethylacetate fraction(EF) and methanol fraction(MF),of Stachytarpheta cayennensis ***(verbenaceae) as well as to ascertain the antispasmodic effects of the ME and the various fractions(HF,EF and MF) on acetylcholine(Ach) and histamine(H) induced contractions on isolated guinea pig ***:The in vitro agar well diffusion method was used for the antimicrobial studies while the isolated tissue method was employed for the antispasmodic test. Organisms used were all clinical isolates of Bacillus subtilis,Staphylococcus aureus,Pseudomonas aeruginosa,Salmonella paratyphi,Candida albicans and Aspergillus ***:The extract and fractions exhibited dose dependent inhibition against all the bacteria tested and also exhibited insignificant antifungal activity against Candida albicans and Aspergillus *** minimum inhibitory concentration(MIC) of the extract and fractions(mg/mL) on Bacillus subtilis, Staphylococcus aureus,Pseudomonas aeruginosa and Salmonella paratyphi respectively were ME 5.62,14.12,22.38,2.11;EF 1.25,6.30,9.40,9.40 and MF 3.98,8.81,39.80,*** n-hexane fraction exhibited MIC of 1.07 mg/mL against only Bacillus *** extract and fractions exhibited significant(Pcontractions induced by acetylcholine and histamine on isolated guinea pig *** of the extract and fractions(μg/mL) which evoked 50%inhibition of maximal response exhibited by Ach were ME 0.64,HF 0.16,EF 0.08 and MF 0.15,while that of histamine included ME 5.12,HF 0.16,EF 0.04 and MF *** phytochemical studies on the extract and fractions indicated the presence of carbohydrates,alkaloids,saponins,flavonoids,steroids and ***: The extract and fractions of Stachytarpheta cayennensis possessed both antibacterial and antispasmodic effects confirming the claimed use in folkloric medicine

关键词： Antimicrobial Antispasmodic Stachytarpheta cayennensis Acetylcholine Histamine

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

Liquid biopsies in primary and secondary bone cancers

引用

Cancer Drug Resistance 2022年第3期5卷 541-559页

作者： Argia ucci Nadia Rucci ma.co Ponzetti Department of Biotechnological and Applied Clinical Sciences University of L’AquilaL’Aquila 67100Italy

Liquid biopsies are a powerful tool to non-invasively analyze tumor phenotype and progression as well as drug *** the bone oncology field,liquid biopsies would be particularly important to develop,since standard biopsies can be very painful,dangerous(e.g.,when found in proximity to the spinal cord),and hard to *** this review,we explore the recent advances in liquid biopsies in both primary(osteosarcoma and Ewing sarcoma)and secondary bone cancers(breast,prostate,and lung cancer-induced bone metastases),presenting their current role and highlighting their unexpressed potential,as well as the barriers limiting their possible adoption,including costs,scalability,reproducibility,and isolation *** discuss the use of circulating tumor cells,cell-free circulating tumor DNA,and extracellular vesicles for the purpose of improving diagnosis,prognosis,evaluation of therapy resistance,and driving therapy decisions in both primary and secondary bone malignancies.

关键词： Liquid biopsy bone metastasis osteosarcoma Ewing sarcoma extracellular vesicles minimal residual disease drug resistance

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

Design of Slant-Form Tool in Precision Reuse of Digital paper Display

引用

Journal of materials Science & Technology 2011年第9期27卷 846-850页

作者： pai-Shan pa Department of Digital content Design Graduate School of Toy and Game Design National Taipei University of Education Taipei 10667 Taiwan China

A reuse fabrication module using micro electroetching as a precision machining process with a new design of a slant-form tool to remove the defective indium-tin-oxide （ITO） nanostructure from the optical polyethyleneterephthalate （PET） surfaces of digital paper display is presented in current studies. The low yield of ITO thin film deposition is an important factor in optoelectronic semiconductor production. The adopted precision reuse process requires only a short period of time to remove the ITO nanostructure easily and cleanly, which is based on technical and economical considerations and is highly efficient. In the current experiment, a large inclined angle of the cathode and a small end radius of the anode take less time for the same amount of ITO removal. A higher feed rate of the optical PET diaphragm combines with enough electric power to drive fast micro electroetching. A small rotational diameter of the anode accompanied by a small width of the cathode corresponds to a higher removal rate for the ITO nanostructure. A pulsed direct current can improve the effect of dreg discharge and is advantageous to couple this current with the fast feed rate of the workpiece. This improvement is associated with an increase in current rating. High rotational speed of the slant-form tool can improve the effect of dregs discharge and is advantageous to associate with the fast feed rate of the workpiece （optical PET diaphragm）.

关键词： Reuse fabrication Slant-Form Digital paper display Optical polyethyleneterephthalate (PET) diaphragm Indium-tin-oxide (ITO) nanostructure Micro electroetching

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

Aerobic Enantioselective Epoxidation of Styrene Analogues Induced by (β-Diketone)-iron( Ⅲ ) complex

引用

Chinese Chemical Letters 2005年第11期16卷 1467-1470页

作者： Qing Fang CHENG Xing You XU Wei Xing ma Shu Jie YANG Tian pa YOU Department of Chemical Technology Huaihai Institute of Technology Lianyungang 222005 Meterials Chemistry Laboratory Nanjing University of Science and Technology Nanjing 210094 Department of Chemistry University of Science and Technology of China Hefei 230026

Tris（d,d-dicampholylmethanato） iron （Ⅲ） complex, Fe（dcm）3, was found to be an excellent catalyst for asymmetric oxygenation of styrene analogues into the corresponding epoxides. Good chemical yields and higher enantioselectivity were obtained with combined use of molecular oxygen and an aldehyde at 30℃, Some factors influencing enantioselectivity were discussed.

关键词： Epoxidation oliefin asymmetric catalysis (β-diketone)-iron (Ⅲ) complex.

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

Selective removal technology using chemical etching and excimer assistance in precision recycle of color filter

引用

Transactions of Nonferrous Metals Society of China 2011年第A01期21卷 210-214页

作者： pai-shan pa Digital content Design Graduate School of Toy and Game Design National Taipei University of Education Taipei City 10671 China

color filters are produced using semiconductor production techniques although problems with low yield remain to be addressed. This study presents a new means of selective removal using excimer irradiation, chemical etching, or electrochemical machining on the fifth generation TFT LCDs. The selective removal of microstructure layers from the color filter surface of an optoelectronic flat panel display, as well as complete removal of the ITO thin-films, RGB layer, or resin black matrix (BM) layer from the substrate is possible. Individual defective film layers can be removed, or all films down to the Cr layer or bare glass can be completely eliminated. Experimental results demonstrate that defective ITO thin-films, RGB layers, or the resin BM layer can now be recycled with a great precision. When the ITO or RGB layer proves difficult to remove, excimer light can be used to help with removal. During this recycling process, the use of 225 nm excimer irradiation before chemical etching, or electrochemical machining, makes removal of stubborn film residues easy, effectively improving the quality of recycled color filters and reducing fabrication cost.

关键词： chemical etching excimer light selective removal technology display color filter

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 effective round ball tool in electrochemistry process as novel reuse fabrication technology

引用

中国有色金属学会会刊：英文版 2012年第S3期22卷 825-830页

作者： P.S.pa Department of Digital content Design Graduate School of Toy and Game DesignNational Taipei University of Education

A reuse fabrication module using micro electrochemistry (MECM) with a round-ball tool to remove the defective In2O3 SnO2 thin film from the surfaces of digital paper display was *** etching effect improves that the number of the round-balls decreases for promoting the concentration of electric power and increasing discharge *** a small size of the round-ball tool takes less time for the same amount of In2O3 SnO 2 layer removal since the effect of MECM is easily developed for supplying of sufficient electrochemical power.A higher feed rate of the poly ethylene terephthalate (PET) diaphragm combines with enough electric power to drive fast etching rate.A pulsed direct current can improve the effect of dreg discharge and is advantageous to couple this current with the fast feed rate of the *** the ultra-precise etching of In2O 3 SnO2,the optoelectronic semiconductor industry can effectively reuse the defective products,reducing production *** precision etching process is of high efficiency and requires only a short period of time to remove the In2O3 SnO2 nanostructures.

关键词： thin film round-ball tool In2O3SnO2 micro electrochemistry digital paper display

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

Effective tool design of three-rank form as precision removal-process of ITO thin-films

引用

中国有色金属学会会刊：英文版 2009年第B09期19卷 232-237页

作者： pai-shan pa Digital content Design Graduate School of Toy and Game DesignNational Taipei University of Education

A new effective tool design of three-rank form of electroremoval was present using a precision recycle system offering faster performance in removing the indium-tin-oxide(ITO) thin-films on color filter surface of displays. Higher electric power is not required since the three-rank form tool is adopted as a feeding mode to reduce the response area. The low yield of ITO persists throughout the entire semiconductor production process. By establishing a recycle process of ultra-precise removal of the thin-film nanostructure, defective products in the optoelectronic semiconductors industry can be effectively recycled, decreasing both production costs and pollution. A 5th generation TFT-LCD was used. The design features of the removal processes for the thin-films and the tool design of three-rank form were of major interest. For the precision removal processes, a pulsed current can improve the effect of dreg discharge and contributes to the achievement of a fast workpiece (displays' color filter) feed rate, but raises the current rating. High flow velocity of the electrolyte with a high rotational speed of the tool electrodes elevates the ITO removal effect. A displays' color filter with a fast feed rate is combined with enough electric power to provide highly effective removal. A small thickness of the rank and a small arc angle of the negative-electrode correspond to a higher removal rate for ITO-film. An effective three-rank form negative-electrode provides larger discharge mobility and better removal effect. It only needs a short period of time to remove the ITO easily and cleanly.

关键词：工具设计薄膜材料 ITO

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

Enterprise Modeling According to Enterprise Architects

Enterprise Modeling According to Enterprise Architects

引用

作者： ma?gorzata pańkowska Department of Informatics University of Economics

In the context of enterprise modeling, this paper is to explain business modeling. The enterprise modeling has been developed to support different stakeholders in their decision-making processes. managers, auditors, enterprise architects, and business developers have particular expectations concerning the enterprise and they need conceptual modeling. Beyond that, business units, i.e., customers, producers, cooperators, and suppliers are interested in the conceptual modeling and enterprise models. In this paper, author argues that conceptual modeling is necessary for enterprise management, and particularly for internal auditing. Author uses the enterprise architecture approach, presents enterprise architecture frameworks;discusses enterprise modeling methods, languages, and tools to reveal the opportunity to apply conceptual modeling for enterprise management. This paper aims to present the application of Assurance map, tasks and goal modeling in an integrated conceptual model.

关键词： Enterprise Modeling Enterprise management Assurance map iStar Goal Modeling Language Archimate

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

In vivo antiplasmodial activities of ethanolic exract and fractions of Eleucine indica

引用

Asian pacific Journal of Tropical Medicine 2012年第9期5卷 673-676页

作者： Ettebong EO Nwafor pa Okokon JE Department of Pharmacology and Toxicology Faculty of PharmacyP.M.B.1017University of UyoUyoNigeria

Objective:To evaluate the in rivo antiplasmodial activities of the extract and fractions(n-hexane. chloroform,***) of the whole plant in Plasmodium berghei berghei infected ***:Oral administrations of the extract(200.400,and 600 my/kg) of Eleacine indica and fractions(400 mg/kg) were screened in the *** and curative tests. Chloroquine(5 mg/kg).pyrimethamine(1.2 mg/kgi and artesunate(5 mg/kgi were used as controls. Results:The extract showed significant[Pmalarial activity which confirms the ethnobotanical use of this plant as a malarial remedy and opens a new highway to further investigate its potentials in the on-going fight against malaria.

关键词： Antimalarial activity Alkaloid Plasmodium berghei berghei Eleucine indica

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

Evaluation of the anticonvulsant and muscle relaxant effects of the methanol root bark extracts of Annona senegalensis

引用

Asian pacific Journal of Tropical Medicine 2010年第1期3卷 25-28页

作者： Okoye TC Akah pa Omeke CP Department of Pharmacology and Toxicology Faculty of Pharmaceutical SciencesUniversity of Nigeria

Objective:To investigate the potentials of the root bark of Annona（A.） senegalensis in the control of seizure and related hypnotic and motor incoordination effects in mice using experimental ***:The methanol extract（ME） of the root bark of *** was studied in mice using pentylenetetrazole（PTZ） induced convulsions,phenobarbitone induced sleeping time and motor coordination test on rota-rod *** toxicity and lethality（LD50） lest as well as phytochemical analysis were also carried ***:The extract（200,400,800 mg/ kg） exhibited a non- dose dependent significant（P50 of 1 2%mg/kg,while the phytochemical studies showed the presence of alkaloids, resins,glycosides,carbohydrate,reducing sugar,flavonoids,terpenoids,saponins and tannins. conclusion:The extract of A senegalensis possessed anticonvulsant activity with pronounced hypnotic and muscle relaxant effects.

关键词： Annona senegalensis Hypnosis Anticonvulsant Muscle relaxant

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

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：