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82篇 您的检索式:作者名="Hertwig"
    题名 作者 年代 出处 被引量
1睾丸主要血管或睾丸网旁取精点与取精成功率不具显著相关性:以220例非梗阻性无精子症患者行传统或显微睾丸取精术为例显示文摘采用传统与显微睾丸取精术相结合方式对220例梗阻性无精症患者行精子提取术,如果传统手术方式未见精子即为阴性取精位点,然后选取2—3个阴性取精位点行显微睾丸取精术。术中通过手术显微镜评价睾丸血管系统,同时记录阳性取精位点与睾丸血供的关系。总的精子获取率为58-2%,早期应用传统手术方式精子获取率为46.8%,而后行显微睾丸取精术则精子获取率增加11.7%。故显微睾丸取精术的应用可显著增加精子获取率(P=0.017),且在睾丸网或睾丸主要血管处并不能显著增加阳性取精位点。J Ullrich Schwarzer Heiko Steinfatt Heiko Steinfatt Manfred Schleyer Frank M Kōhn Klaus Fiedler2, Irene von Hertwig Gottfried Krüsmann Wolfgang Würfel 2013Asian Journal of Andrology2013,15,6:5
2Cathodoluminescence Microscopy of Zircon in HP-and UHPMetamorphic Rocks: A Fundamental Technique for Assessing the Problem of Inclusions versus Pseudo-Inclusions显示文摘This paper shows how a faulty approach to the study of mineral inclusions in zircon can lead to misleading interpretations of the geological context.We present and discuss two well-documented examples.Zircon grains separated from HP metamorphic jadeitite of the Rio San Juan Complex,Dominican Republic,and from UHP pyrope quartzite of the Dora Maira Massif,northern Italy,were studied using cathodoluminescence(CL)techniques,in combination with mineral inclusion and age data.In general,zircon from both localities shows inherited magmatic core domains with oscillatory zoning and metamorphic rims.The magmatic cores of zircon from the jadeitite yield ages of 115–117 Ma and host jadeite and omphacite which are of metamorphic origin and formed at about 78 Ma.Zircon from lawsonite blueschist,representing the country rock of the jadeitite,contains domains with oscillatory zoning that are nearly identical in age to the zircon cores from the adjacent jadeitite,and also contains younger metamorphic minerals such as lawsonite,albite,phengite(Si3.68),chlorite,and omphacite.Similar observations were made on the magmatic cores of zircon from the pyrope quartzite.These are about 275 Ma in age and host pyrope,phengite(Si3.55),talc,and kyanite,all of which formed during UHP metamorphism at about 35 Ma.Zircon from the biotite-phengite-gneiss country rock(metagranite)shows oscillatory zoning and yields ages that are identical to those of the magmatic cores of zircon from pyrope quartzite,which thus reflect granitic intrusion ages.The country-rock zircon also encloses metamorphic minerals with ages of about 35 Ma.Such minerals are,for example,garnet and phengite,as well as a polymineralic assemblage of clinopyroxene+garnet+phengite+quartz,that point to formation at UHP metamorphic conditions around 40 kbar/750℃.Based on these examples we suggest an effective approach centered on key evidence from CL studies to show that magmatic domains of zircon may actually contain pseudo-inclusions which were not entrapped during an early stage of formation,but were instead introduced during later metamorphic or metasomatic events along microcracks representing pathways for fluid influx.Cathodoluminescence microscopy is thus an excellent tool for avoiding such pitfalls by allowing distinction between true inclusions and pseudo-inclusions in zircon.Hans-Peter Schertl Andreas Hertwig Walter VMaresch 2019Journal of Earth Science2019,30,6:3
3Communicating statistical information显示文摘Hoffrage U Lindsey S Hertwig R 2000Science2000,290,:1
4Transparent MgF2-films by sol-gel coating: Synthesis and optical properties 显示文摘Kruger H Kemnitz E Hertwig A 2008Thin Solid Films2008,516,12:1
5Relativistic effects on bonding in cationic transition-metal-carbene complexes: a density - functional study 显示文摘HEINEMANN C HERTWIG R H WESENDRUP R 1995J Am Chem Soc1995,117,1:1
6The priori- ty heuristic:Making choices without trade-offs 显示文摘Brandstatter E Gigerenzer G Hertwig R 2006Psychological Review2006,113,2:1
7The priority heuristic:Making choices without trade-offs显示文摘Brandst(a)tter E Gigerenzer G Hertwig R 0,,02:1
8Shape control of adaptive composite reflectors显示文摘Paradies R Hertwig M 1999Composites Part B:Engineering1999,30,1:1
9The anglotensinogen gene 285T vadant is associated with an increased risk of restenosis after pereutaneous translu-minal coronary angioplasty:显示文摘Volzke Ht Hertwig S Rettig R 2000Clin Sei(Coleh)2000,99,1:1
10Performance and design of a turbulent bed cooling tower显示文摘Barile R G Dengler J L Hertwig T A 1974AICHE Symposium Series1974,70,138:1
11The priority heuris- tic :making choices without trade-offs 显示文摘Brandstatter E Gigerenzer G Hertwig R 2006Psychological Re- view2006,113,2:1
12Defining the structer of the general stress regulon of Bacillus subtilis using targeted microarray analysis and random forest classification显示文摘Nannapaneni P Hertwig F Depke M 2012Microbiology2012,158,3:1
13Role of needle guage and tip configuration in production of lumbar puncture headache 显示文摘Lambert DH Hurley R J Hertwig L 1997Reg Anesth1997,22,1:1
14An improved design of cone penetrometer显示文摘Armbruster K Hertwig A Kutzbach H D 1990Journal of Agricultural Engineering Research1990,46,:1
15Metabolic acidity or alkalinity of foods显示文摘Hertwig R 1929Sci- ence1929,69,1791:1
16Communicating statistical information显示文摘Hoffrage U Lindsey S Hertwig R 2000Science2000,290,5500:1
17Light dependence of catalase synthesis and degradation in leaves and the influence of interfering stress conditions 显示文摘Hertwig B Streb P Feierabend J 1992Plant Physiol1992,100,4:1
18Shiga toxin- producing Escherichia coli O104: H4: a new challenge for microbiology显示文摘Muniesa M Hammerl JA Hertwig S 2012Appl Environ Microbiol2012,78,12:1
19The angiotensinogen gene 235T variant is associated with an increased risk of restenosis after percutaneous transluminal coronary angioplasty显示文摘 Hertwig S Retting R 2000Clin Sci2000,99,1:1
20What biological silage additives can do显示文摘Robowsky K D Hertwig F Nenbert G 1993DLG Itteilungen Agri Inform1993,,5:1
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