维普中文期刊产品整合服务
21篇 您的检索式:作者名="Demetra"
    题名 作者 年代 出处 被引量
1地肤子抑菌活性成分筛选显示文摘以最小抑菌浓度为指标,采用二倍稀释法分别测试地肤子乙醇提取物中的石油醚相、乙酸乙酯相、正丁醇相和水相萃取物对4株细菌和5株植物病原菌的抑制作用;再对抑菌活性较强的萃取物进行分离纯化,通过二倍稀释法测试所分离化合物的抑菌活性,并对其结构进行表征。结果表明,正丁醇相萃取物的抑菌活性最强,从中分离得到3个化合物,其中化合物Ⅰ的抑菌活性较强,对大肠杆菌具有显著的抑制作用,其最小抑菌浓度为31.3μg·mL-1,经1 HNMR、IR及高分辨质谱等鉴定化合物Ⅰ为齐墩果酸。齐墩果酸有较强的抑菌活性,是地肤子抑菌活性的物质基础。闫梦茹 张文博 罗国平 Demetra Simion 王小宁 陈程 2019化学与生物工程2019,36,2:15
2Toxicity and heavy metal contamination of surficial sediments from the bay of Thessaloniki(Northwestern Aegean Sea) Greece显示文摘Konstantinos Zabetoglou Demetra Voutsa Constantini Samara 2002Chemosphere2002,49,:1
3The 2001 National Household Travel Survey: A look into the travel patterns of older Americans显示文摘Demetra V. Collia Joy Sharp Lee Giesbrecht 2003Journal of Safety Research2003,,4:1
4Drawing on a Theoretical Model to Study Students’ Understandings of Fractions显示文摘Charalambos Y. Charalambous Demetra Pitta-Pantazi 2007Educational Studies in Mathematics2007,,3:1
5A novel non-chemical nematicide for the control of root-knot nematodes显示文摘Ioannis O Giannakou Demetra P A 2004Applied Soil Ecology2004,6979,:1
6The 2001 National Household Travel Survey: A look into the travel patterns of older Americans显示文摘Demetra V. Collia Joy Sharp Lee Giesbrecht 2003Journal of Safety Research2003,,4:1
7Drawing on a Theoretical Model to Study Students’ Understandings of Fractions显示文摘Charalambos Y. Charalambous Demetra Pitta-Pantazi 2007Educational Studies in Mathematics2007,,3:1
8Pharmacological Profiling of Recombinant Tissue Factor Pathway Inhibitor显示文摘Walter Jeske Debra Hoppensteadt Demetra Callas Michael Koza Jawed Fareed 1996Semin Thromb Hemost1996,,02:1
9Teaching history using a Virtual Reality Modeling Language model of Erechtheum显示文摘Demetra Eggarxou Sarantos Psycharis 2007International Journal of Education and Development using Information and Communication Technology (IJEDICT)2007,3,3:1
10Toxicity and heavy metal contamination of surfical sediments from the Bay of Thessaloniki (Northwestern Aegean Sea) Greece 显示文摘Konstantinos Z Demetra V Constantini S 2002Chemosphere2002,49,:1
11Comparison of the pain experienced by infertile women undergoing hysterosalpingo contrast sonography or radiographic hysterosalpingography显示文摘Demetra Socolov Iuliana Boian Lucian Boiculese Bogdan Tamba Ivona Anghelache-Lupascu Razvan Socolov 2010International Journal of Gynecology and Obstetrics2010,,3:1
12Toxicity and heavy metal contamination of surficial sediments from the Bay of Thessaloniki (Northwestern Aegean Sea) Greece显示文摘Konstantinos Zabetoglou Demetra Voutsa Constantini Samara 2002Chemosphere2002,49,:1
13Quantitative analysis of the relationship between microRNA?124a, -34band -203 gene methylation and cervical oncogenesis显示文摘Anca Botezatu Cristina Goia-Rusanu Iulia Iancu Irina Huica Adriana Plesa Demetra Socolov Carmen Ungureanu Gabriela Anton 2011Molecular Medicine Reports2011,,1:1
14Quantitative analysis of CryIA(b) expression in Bt maize plants, tissues, and silage and stability of expression over successive generations显示文摘Patricia L. Fearing Devon Brown Demetra Vlachos Moez Meghji Laura Privalle 1997Molecular Breeding1997,,3:1
15Toxicity and heavy metal contamination of surficial sediments from the BaY of Thessaloniki (Northwestern Aegean Sea)Greece显示文摘Konstantinos Zabetoglou Demetra Voutsa Constantini Samara 2002Chemosphere2002,49,10:1
16Ornithine transcarbamylase and arginase I deficiency are responsible for diminished urea cycle function in the human hepatoblastoma cell line HepG2显示文摘Demetra Mavri-Damelin Simon Eaton Leonard H. Damelin Myrddin Rees Humphrey J.F. Hodgson Clare Selden 2006International Journal of Biochemistry and Cell Biology2006,,3:1
17Toxicity and heavy metal contamination of surficial sediments from the Bay of Thessaloniki (Northwestern Aegean Sea) Greece显示文摘Konstantinos Z Demetra V Constantini S 2002Chemosphere2002,,49:1
18Value of anti‐HBc screening of blood donorsfor prevention of HBV infection: results of a 3‐year prospective study in Northwestern Greece显示文摘Eleptheria?K.Zervou Georgios?N.Dalekos Demetra?S.Boumba Epameinondas?V.Tsianos 2002Transfusion2002,,5:1
19The evolution of tachinid pollination in Neotinea ustulata is related to floral cuticular composition and the combined high relative production of(Z)-11-C23/C25enes显示文摘Among terrestrial orchids,and particularly among the subtribe Orchidinae,flies are underrepresented as pollinators.The European Neotinea ustulata,which developed specialized pollination by tachinid flies,is known to produce high relative concentrations of the floral cuticular alkenes(Z)-11-tricosene and(Z)-11-pentacosene(referred to as(Z)-11-C23/C25enes),which seem to be uncommon among orchid flowers.If the evolution of tachinid pollination is related to that of(Z)-11-C23/C25enes,we can expect that closely related species have a different floral chemical pattern and significantly small or no production of(Z)-11-C23/C25enes,independently of their pollinator guild identity(e.g.,bees,flies,moths).We chemically compared the floral cuticular composition among Neotinea species,performed electrophysiological analyses,reconstructed the phylogenetic Orchidinae tree,and identified the evolutionary history of pollinator guild and(Z)-11-C23/C25enes production within the Orchidinae.Neotinea ustulata has evolved a markedly different floral cuticular composition compared to other Neotinea and produces both compounds((Z)-11-C23/C25enes)in high relative quantities(i.e.,above 8%in combination),which are detectable by tachinid antennae.Moreover,most Orchidinae taxa have minimal or no production of these alkenes,independently of the identity of their pollinator guild.Our ancestral reconstruction suggested that(Z)-11-C23/C25enes production was an evolutionary exaptation in Neotinea,whereas tachinid pollination was a unique evolutionary innovation for N.ustulata.Floral cuticular composition and,in particular,the combined production of(Z)-11-C23/C25enes at relatively high concentrations is intimately linked to the evolution of tachinid pollination within the Orchidinae.Carlos Martel Demetra Rakosy Pedro E.Romero Jana Jersáková Manfred Ayasse 2023Journal of Systematics and Evolution2023,61,3:0
20HOMOSEXUAL'S STEREOTYPE v. FATHER'S STEREOTYPE: A DISCUSSION ON PERSONAL INTERVIEWS显示文摘Demetra Fr. Sorvatzioti 2011US-China Law Review2011,8,9:0
返回顶部 每页显示:
共2页 首页 上一页 第1页 下一页 末页 /2 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费