维普中文期刊产品整合服务
138篇 您的检索式:作者名="Furn"
    题名 作者 年代 出处 被引量
1Ophiolites of the Central Asian Orogenic Belt:Geochemical and petrological characterization and tectonic settings显示文摘We present a compilation of published data(field,petrography,ages and geochemistry)from 73 ophiolitic complexes of the Central Asian Orogenic Belt.The ophiolitic complexes,ranging in age from Neoproterozoic to Triassic.have been geochemically classified as subduction-related and subductionunrelated categories applying recent,well-established discrimination diagrams.The subductionunrelated category is further subdivided into Mid-Ocean Ridge type(MOR),a common rift-drift stage and Plume type,and the subduction-related category is subdivided into Backarc(BA),Forearc(FA).Backarc to Forearc(BA-FA)and Volcanic Arc(VA)types.The four subduction-related types define highly different geochemical features,with the BA and FA types defining end members showing subduction influence of 10%-100%and 90%-100%subduction influence,respectively,and the two other types(BAFA and VA)define values between the two end members.The subduction-related category comprises79%of the examined ophiolites,of which the BA type ophiolites is by far the dominant group,followed by the BA-FA type,and with FA and VA types as subordinate groups.The Neoproterozoic and Ordovician complexes exhibit the highest,whereas those of Silurian age exhibit the lowest subduction-influence.Of the remaining 21%subduction-unrelated ophiolites,the MOR type dominates.Both the subductionrelated and subduction-unrelated types,in particular the latter,are commonly associated with alkaline basalts taken to represent ocean island magmatism.Harzburgite,dunite,gabbro and basalt are the common lithologies in all ophiolite types,whereas the BA-FA,FA and VA types generally contain intermediate to felsic rocks,and in the FA type boninites occur.The subduction-related ophiolites types generally show low metamorphic grade,whereas greenschist.amphibolite and blueschist grades occur in the subduction-unrelated and BA types.The highly different subduction contribution(from 0 to 100%in the MOR and FA,respectively),attest to variable dips of the subducting slab,as well as variable flux of subduction-related elements into the mantle above subducting slabs,from where the ophiolite magmas got their geochemical fingerprints.As most MOR ophiolites get subducted to the deep mantle,the subduction-related ophiolites have become a dominant ophiolitic type on Earth’s surface through all times supporting the idea about the early start of Plate Tectonics.Harald Furnes Inna Safonova 2019Geoscience Frontiers2019,10,4:15
2Four billion years of ophiolites reveal secular trends in oceanic crust formation显示文摘We combine a geological,geochemical and tectonic dataset from 118 ophioiite complexes of the major global Phanerozoic orogenic belts with similar datasets of ophiolites from 111 Precambrian greenstone belts to construct an overview of oceanic crust generation over 4 billion years.Geochemical discrimination systematics built on immobile trace elements reveal that the basaltic units of the Phanerozoic ophiolites are dominantly subduction-related(75%),linked to backarc processes and characterized by a strong MORB component,similar to ophiolites in Precambrian greenstone sequences(85%).The remaining 25%Phanerozoic subduction-unrelated ophiolites are mainly(74%) of Mid-Ocean-Ridge type(MORB type),in contrast to the equal proportion of Rift/Continental Margin,Plume,and MORB type ophiolites in the Precambrian greenstone belts.Throughout the Phanerozoic there are large geochemical variations in major and trace elements,but for average element values calculated in 5 bins of 100 million year intervals there are no obvious secular trends.By contrast,basaltic units in the ophiolites of the Precambrian greenstones(calculated in 12 bins of 250 million years intervals),starting in late Paleo- to early Mesoproterozoic(ca.2.0-1.8 Ga),exhibit an apparent decrease in the average values of incompatible elements such as Ti,P,Zr,Y and Nb,and an increase in the compatible elements Ni and Cr with deeper time to the end of the Archean and into the Hadean.These changes can be attributed to decreasing degrees of partial melting of the upper mantle from Hadean/Archean to Present.The onset of geochemical changes coincide with the timing of detectible changes in the structural architecture of the ophiolites such as greater volumes of gabbro and more common sheeted dyke complexes,and lesser occurrences of ocelli(varioles) in the pillow lavas in ophiolites younger than 2 Ga.The global data from the Precambrian ophiolites,representative of nearly 50%of all known worldwide greenstone belts provide significant clues for the operation of plate tectonic processes in the Archean.Harald Furnes Maarten de Wit Yildirim Dilek 2014Geoscience Frontiers2014,5,4:13
3Conversion of laparoscopic colorectal resection for cancer: What is the impact on short-term outcomes and survival?显示文摘Laparoscopic resection for colon and rectal cancer is associated with quicker return of bowel function, reduced postoperative morbidity rates and shorter length of hospital stay compared to open surgery, with no differences in long-term survival. Conversion to open surgery is reported in up to 30% of patients enrolled in randomized control trials comparing open and laparoscopic colorectal resection for cancer. In this review, reasons for conversion are anatomical-related factors, disease-related-factors and surgeon-related factors. Body mass index, local tumour extension and co-morbidities are independent predictors of conversion. The current evidence has shown that patients with converted resection for colon cancer have similar outcomes compared to patients undergoing a laparoscopic completed or open resection. The few studies that have assessed the outcomes after conversion of laparoscopic rectal resection reported significantly higher rates of complications and longer length of hospital stay in converted patients compared to laparoscopically treated patients. No definitive conclusions can be drawn when converted and open rectal resections are compared. Early and pre-emptive conversion appears to have more favourable outcomes than reactive conversion; however, further large studies are needed to better define the optimal timing of conversion. With regard to long-term oncologic outcome, overall and disease-free survival in the case of conversion in laparoscopic colorectal cancer surgery seems to be worse than those achieved in patients in whom resection was successfully completed by laparoscopy. Although a worse long-term oncologic outcome has been suggested, it remains difficult to draw a proper conclusion due to the heterogeneity of the long-term outcomes as well as the inclusion of both colon and rectal cancer patients in most of the studies. Therefore, we discuss the currently available evidence of the impact of conversion in laparoscopic resection for colon and rectal cancer on both short-term outcomes and long-term survival.Marco E Allaix Edgar JB Furnée Massimiliano Mistrangelo Alberto Arezzo Mario Morino 2016World Journal of Gastroenterology2016,22,37:11
4Paleoarchean bedrock lithologies across the Makhonjwa Mountains of South Africa and Swaziland linked to geochemical,magnetic and tectonic data reveal early plate tectonic genes flanking subduction margins显示文摘The Makhonjwa Mountains, traditionally referred to as the Barberton Greenstone Belt, retain an iconic Paleoarchean archive against which numerical models of early earth geodynamics can be tested. We present new geologic and structural maps, geochemical plots, geo- and thermo-chronology, and geophysical data from seven silicic, mafic to ultramafic complexes separated by major shear systems across the southern Makhonjwa Mountains. All reveal signs of modern oceanic back-arc crust and subductionrelated processes. We compare the rates of processes determined from this data and balance these against plate tectonic and plume related models. Robust rates of both horizontal and vertical tectonic processes derived from the Makhonjwa Mountain complexes are similar, well within an order of magnitude, to those encountered across modern oceanic and orogenic terrains flanking Western Pacific-like subduction zones. We conclude that plate tectonics and linked plate-boundary processes were well established by 3.2-3.6 Ga. Our work provides new constraints for modellers with rates of a 'basket' of processes against which to test Paleoarchean geodynamic models over a time period close to the length of the Phanerozoic.Maarten de Wit Harald Furnes Scott MacLennan Moctar Doucouré Blair Schoene Ute Weckmann Uma Martinez Sam Bowring 2018Geoscience Frontiers2018,9,3:4
5Short term results of complete (D3) vs. standard (D2) mesenteric excision in colon cancer shows improved outcome of complete mesenteric excision in patients with TNM stages I-II显示文摘K. E. Storli K. S?ndenaa B. Furnes I. Nesvik E. Gudlaugsson I. Bukholm G. E. Eide 2014Techniques in Coloproctology2014,,6:3
6Haplotype frequency distribution and linkage disequilibrium analysis of single nucleotide polymorphisms at the human FMO3 gene locus显示文摘Hao DC Sun J Furnes B Schlenk D Hou ZF Zhang YP 2006Biochem Genet2006,44,78:1
7Biodistribution of rhenium-188 Lipiodol infused via the hepatic artery of rats with hepatic tumours显示文摘Shyh-Jen Wang Wan-Yu Lin Min-Nan Chen Bor-Tsung Hsieh Lie-Hang Shen Zei-Tsan Tsai Gann Ting Furn F. Knapp 1996European Journal of Nuclear Medicine1996,,1:1
8Paleogene tuf faceous intervals, Grane Field (Block 25/11), Norwegian North Sea: Their depositional, petrographical, geochemical character and regional implications显示文摘Haaland H J Furnes H Martinsen O J 2000Marine and Petroleum Geology2000,17,:1
9Allele and genotype frequencies of polymorphic FMO3 gene in two genetically distinct populations显示文摘Hao D Sun J Furnes B Schlenk D Li M Yang S 2007Cell Biochem Funct2007,25,4:1
10Stability of Human Methanogenic Flora Over 35 Years and a Review of Insights Obtained From Breath Methane Measurements显示文摘Michael D. Levitt Julie K. Furne Michael Kuskowski John Ruddy 2006Clinical Gastroenterology and Hepatology2006,,:1
11257 ankle arthroplasties performed in Norway between 1994 and 2005显示文摘Bj?rg-Tilde S Fevang Stein A Lie Leif I Havelin Johan G Brun Arne Skredderstuen Ove Furnes 2007Acta Orthopaedica2007,,5:1
12Ship collisions with offshore platforms显示文摘Olav Furnes Jфrgen Amdahl Norway0,,:1
13Observed and computed M2 tidal currents in the North Sea显示文摘Davies A M Furnes G K 1980Phys Oceanogr1980,10,:1
14Ophiolite genesis and global tectonics: Geochemical and tectonic fingerprinting of ancient oceanic lithosphere 显示文摘DILEK H FURNES D 2011Geological Society of America Bulletin2011,123,34:1
15The use of probiotics in pediatric gastroenterology:a review of the literature and recommendations by Latin-American experts显示文摘Cruchet S Furnes R Maruy A 2015Pediatr Drugs2015,17,3:1
16The guanylate cyclase-C signaling pathway is down-regulated in inflammatory bowel disease显示文摘? ystein Brenna Torunn Bruland Marianne W. Furnes Atle van Beelen Granlund Ignat Drozdov Johanna Emg? rd Gunnar Br? nstad Mark Kidd Arne K. Sandvik Bj? rn I. Gustafsson 2015Scandinavian Journal of Gastroenterology2015,,10:1
17Free and acid-labile hydrogen sulfide concentrations in mouse tissues:anomalously high free hydrogen sulfide in aortic tissue显示文摘LEVITT M D ABDEL-REHIM M S FURNE J 2011Antioxid Redox Signal2011,15,:1
18Ophiolite genesis and global tectonics:Geochemical and tectonic fingerprinting of ancient oceanic lithosphere显示文摘Dilek Y Furnes H 2011GSA Bulletin2011,123,34:1
19Relationship between GHb concentration and erythrocyte survival determined from breath carbon monoxide concentration显示文摘Virtue MA Furne JK Nuttal FQ 2004Diabetes Care2004,27,4:1
20Anfioxidant defences in the first life phases of the sturgeon Acipenser naccarii显示文摘Diaz M E Furne M Trenzado C E 2010Aquaculture2010,307,:1
返回顶部 每页显示:
共7页 首页 上一页 第1页 下一页 末页 /7 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