1、Medline美國(guó)國(guó)立醫(yī)學(xué)圖書(shū)館出品的書(shū)目型數(shù)據(jù)庫(kù) 起始于1951年 生物醫(yī)學(xué)相關(guān)的3900多種期刊文獻(xiàn)。周更新4次CASREACT從1840年以來(lái)1000多萬(wàn)條單步和多步的反響；來(lái)源于期刊、專(zhuān)利；有機(jī)反響、有機(jī)金屬反響、無(wú)機(jī)反響、生化反響等；周新增600至1300個(gè)新反響。REGISTRY世界上最大的物質(zhì)數(shù)據(jù)庫(kù)2950萬(wàn)個(gè)有機(jī)和無(wú)機(jī)物質(zhì)；5700萬(wàn)個(gè)蛋白質(zhì)核酸序列；日更新4000多個(gè)新物質(zhì)。 CHEMCATS 來(lái)自全球734家化學(xué)品供給商的834 種產(chǎn)品目錄，包括產(chǎn)品價(jià)格信息和供給商聯(lián)絡(luò)方式；CHEMLIST來(lái)自19個(gè)國(guó)家和國(guó)際性組織的管制化學(xué)品清單 。Look for this icon

2、somewhere on the desktopLICENSE AGEEMENT 例一： 檢索 “制備可溶性納米管相關(guān)文獻(xiàn)信息獲取摘要信息通過(guò)Chemport鏈接全文去除重復(fù)信息引用的文獻(xiàn)被引用的情況涉及的物質(zhì)涉及的反響其他網(wǎng)絡(luò)資源的信息小結(jié)Analyze-研究課題的全面了解Refine-真正找到您感興趣的文獻(xiàn)Get related-對(duì)研究課題的拓展延伸例二例二 得到具備一定條件的結(jié)構(gòu)信息得到具備一定條件的結(jié)構(gòu)信息問(wèn)題：?jiǎn)栴}：存在多少種環(huán)結(jié)構(gòu)存在多少種環(huán)結(jié)構(gòu)X= F，Cl， Br，I 分別有多少種物質(zhì)分別有多少種物質(zhì)R1=H，OH，X分別有多少物質(zhì)分別有多少物質(zhì)R1= H，OH，XR2= O，

3、S檢索物質(zhì)的途徑p 主題檢索 Explore Research Topicp 文獻(xiàn)鏈接物質(zhì)。Get Related Substancep 物質(zhì)的名稱(chēng)、俗名、CAS Registry Number。 Locate Locate substancep 分子式。Explore Molecule Formulap 化學(xué)結(jié)構(gòu)式。 Explore Chemical Structure檢索過(guò)程重復(fù)基團(tuán)工具可變位置連接工具 Exact search 物質(zhì)的鹽 、同位素、混合物、聚合物 Substructure search 查詢物質(zhì)是目標(biāo)物質(zhì)的一局部 Similarity search結(jié)構(gòu)與查詢物質(zhì)相似，但不

4、相同 文獻(xiàn)的信息商品來(lái)源信息管制信息反響信息環(huán)骨架分析環(huán)骨架分析可變基團(tuán)分析可變基團(tuán)分析R基團(tuán)分析基團(tuán)分析 例三 檢索酸性鹵化物轉(zhuǎn)化為醛的反響官能團(tuán)之間的反響官能團(tuán)之間的反響原子鎖定工具反響原子標(biāo)記工具反響官能團(tuán)列表環(huán)鎖定工具反響位置標(biāo)記工具假設(shè)我們只想得到一步反響假設(shè)我們只想得到一步反響假設(shè)我們規(guī)定反響物必須是乙酰氯假設(shè)我們規(guī)定反響物必須是乙酰氯一般最正確在23個(gè)Concepts關(guān)鍵詞；最好使用介詞而不用Boolean運(yùn)算符，如AND 、OR、NOT；介詞能被識(shí)別； 識(shí)別常用縮寫(xiě)、復(fù)數(shù)、過(guò)去式等；不能用！或*刪減字符或通配符可用括號(hào)，括號(hào)內(nèi)為前詞的同義詞；檢索檢索tips-Research

5、Topic一般最正確在23個(gè)Concepts關(guān)鍵詞；最好使用介詞而不用Boolean運(yùn)算符，如AND 、OR、NOT；介詞能被識(shí)別； 識(shí)別常用縮寫(xiě)、復(fù)數(shù)、過(guò)去式等；不能用！或*刪減字符或通配符可用括號(hào)，括號(hào)內(nèi)為前詞的同義詞；檢索檢索tips-Research Topic 區(qū)分大小寫(xiě)； 輸入必須標(biāo)準(zhǔn)，否那么會(huì)自動(dòng)要求重輸； 輸入時(shí)不同元素之間可用空格隔開(kāi)，系統(tǒng)也會(huì)自動(dòng)分割； 輸入鹽類(lèi)，可分為酸堿組分以 . 相連； 聚合物那么輸入單體組成以括號(hào)加X(jué)，如 C8H8.C4H6)X；檢索檢索tips-Molecula Formula 檢索 tips不支持右鍵彈出剪切、復(fù)制、粘貼，請(qǐng)使用菜單可以隨時(shí)查看檢

6、索歷史，了解自己的檢索歷程檢索路線可以多多嘗試多使用Analysis & Refine 功能 研究課題的創(chuàng)新點(diǎn) 研究課題的國(guó)內(nèi)外開(kāi)展動(dòng)態(tài) 研究課題的開(kāi)展趨勢(shì) 某篇特定文獻(xiàn)，物質(zhì)，反響 某種物質(zhì)是否有人研究過(guò)，都涉及了哪些方面的研究 更多我想知道還不知道的信息一次查找超過(guò)100年化學(xué)、材料、生命科學(xué)等領(lǐng)域的資料，并可對(duì)結(jié)果再分析統(tǒng)計(jì)與進(jìn)階檢索更有物質(zhì)結(jié)構(gòu)查詢與反響檢索每天更新，緊跟世界研究熱點(diǎn)不僅僅是文獻(xiàn)檢索工具，更是科研過(guò)程中不可或缺的一局部總結(jié) SciFinder ScholarCHEMICAL ABSTRACTSChemical Abstracts is the premier abstr

7、acting service for the field of chemistry and related areas. This is a huge database with over 700,000 documents added each year. CA abstracts are summaries of scientific discoveries reported in the published literature. They are intended to help you decide whether the original document is of intere

8、st.Chemical Abstracts covers around 8,000 journals.CAS CHEMISTS CREATE ABSTRACTS FROM:* journal articles (74%)* chemical and chemical engineering patents (16%)* conference proceedings (5%)* technical reports * dissertations * books Many researchers unfamiliar with the content of the CAS databases as

9、sume that CA is strictly chemistry, and are astonished by the diversity of its coverage.Agricultural Sciences Biology and Life Sciences Engineering Sciences Food Sciences General Chemistry Geological Sciences Material Sciences Medical Sciences Physics Polymer ScienceAGRICULTURAL SCIENCESMore than 57

10、4,000 documents in the CAS database focus on agricultural sciences.Animal nutritionImmunochemistryAgrochemical bioregulatorsPesticidesPlant growth regulatorsEssential oils and cosmeticsPharmaceuticalsFertilizers, soils, plant nutritionBIOLOGY & LIFE SCIENCESMore than 21% of the document references i

11、n the CAS database focus on biology and the life sciences.AgricultureMolecular biologyFood engineering & BiotechnologyMicrobes, algae, and fungiFermentationBioindustrial methodsAnimal sciencePlant scienceENGINEERING SCIENCESApproximately 35% of the CAS database focuses on information of interest to

12、engineers.Geological chemistryPropellants and explosivesCoatings and inksPlastics manufacturingNuclear technologyTextiles and fibersApparatus and plant equipmentWaste treatment and disposalFOOD SCIENCESNearly 700,000 document references in the CAS database focus on food sciences.Plant biochemistryFo

13、od and feed chemistryGeneral physical chemistryMicrobes, algae and fungiNonmammalian biochemistryNeutraceuticalsAnimal nutritionGENERAL CHEMICAL INFORMATIONAll documents cited in the CAS database cover some aspect of chemistry.Biomolecules and synthetic analogsGeneral organic chemistryBenzene and it

14、s derivativesOrganometallic compoundsBiochemical methodsAliphatic compoundsHeterocyclic compoundsElectrochemistryGEOLOGICAL SCIENCESNearly 760,000 documents in the CAS databases focus on geological sciences.Geological chemistry and materialsAir pollutionNatural gas exploration, reservoirsFossil fuel

15、s, related productsMineralogical chemistryIndustrial hygieneNuclear technologyWater, groundwaterMATERIALS SCIENCESApproximately 10% of document references in the CAS databases focus on material sciences.Nuclear technologyCeramicsExtractive metallurgyPlastics fabrication and usesFerrous metals and al

16、loysNonferrous metals and alloysCement, concrete, and related building materialsPhysical properties of synthetic high polymersMEDICAL SCIENCESApproximately 18% of all documents in the CAS databases focus on the medical sciences.Pharmaceutical SciencesPhysiological chemistryToxicologyPathological bio

17、chemistryVeterinary medicineNutritionImmunochemistryRadiation biochemistryMEDLINE SciFinder Scholar also includes the MEDLINE database. The MEDLINE database contains more than 12 million references to journal articles in the life sciences with a concentration on biomedicine. MEDLINE indexes more tha

18、n 4300 journals.PHYSICSApproximately 23% of the CAS databases focus on physics.Surface chemistry and colloidsElectric phenomenaMass spectroscopyCrystallography and liquid crystalsThermodynamicsThermal propertiesNuclear phenomenaMagnetic phenomenaPOLYMER SCIENCEApproximately 15% of the document refer

19、ences in the CAS databases focus on polymer science and technology.PharmaceuticalsLeathers, fats, and waxesFossil fuels and derivativesPlastics manufacture and processingSurface chemistry and colloidsSynthetic elastomers and natural rubberChemistry of synthetic high polymersFORMAT AND COVERAGEPrint:

20、 Chemical Abstracts 1907- to dateElectronic: SciFinder Scholar 1907- to dateSCIFINDER SCHOLAR SciFinder Scholar is a desktop research tool designed especially for use by students and faculty to easily access the information in the Chemical Abstracts databases. Search by author name, research topic,

21、substance identifier, chemical structure, or chemical reaction. FULL TEXT ICONSciFinder Scholar provides full text capability via the ChemPortSM Connection. If full-text is available for a selected patent or journal article, a Computer icon will be present. Not every citation links to full text.CAS

22、Registry NumberEach CAS Registry Number (RN) is a unique numeric identifier that contain up to 9 digits, divided by hyphens into 3 parts. Each RN designates only one substance. It has no chemical significance and is a link to a wealth of information about a specific chemical substance. There are over 32,000,000 RNs. Searching by RN is very effective.CAS Registry Number CAS Registry Numb