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    题名 作者 年代 出处 被引量
1都兰花岗岩锆石SHRIMP定年及柴北缘超高压带花岗岩年代学格架显示文摘柴北缘超高压带东端都兰地区花岗岩锆石SHRIMP U-Pb定年结果表明,野马滩东岩体的年龄为(406.6±3.5)Ma,巴立给哈滩西岩体的年龄分别为(407.3±4.3)和(397±6)Ma,水文站北岩体的年龄分别为(404.5±4.0)和(397.0±3.7)Ma,水文站南岩体的年龄为(380.5±5.0)Ma,察察公麻岩体的年龄分别为(382.5±3.6)和(372.5±2.8)Ma.从年龄上看,这些花岗岩明显地分为两期:早期的为407-397 Ma,晚期的为383-373 Ma.它们主要为准铝质-弱过铝质的石英闪长岩、花岗闪长岩和二长花岗岩.岩石地球化学研究表明,大多数样品为钙碱性系列,少数样品为钙性或碱钙性系列,其中,早期花岗岩的87Sr/86Sr比值(0.7082-0.7110)和模式年龄(T2DM=1.41-1.90 Ga)高于晚期花岗岩(0.7072-0.7091,T2DM=1.07-1.38 Ga),但晚期花岗岩的εNd(t)值(0.6- -3.0)高于早期花岗岩(-3.2- -9.3),表明早期花岗岩可能起源于早中元古代的大陆壳;而晚期花岗岩起源于晚中元古代玄武质地壳.结合区域地质构造特征,可以认为,早期花岗岩的形成与俯冲板块的断离并折返有关,而晚期花岗岩的形成与造山带岩石圈地幔拆沉作用有关.吴才来 郜源红 李兆丽 雷敏 秦海鹏 李名则 刘春花 Ronald B FROST Paul T ROBINSON Joseph L WOODEN 2014中国科学:地球科学2014,44,10:27
2Role of liver transplantation in the management of hepatoblastoma in the pediatric population显示文摘Hepatoblastoma(HB) is the most common primary liver tumor in children and accounts for two-thirds of all malignant liver neoplasms in the pediatric population. For patients with advanced HB(unresectable or unresponsive to chemotherapy), combined treatment with chemotherapy and liver transplantation is an excellent option. The etiology of HB is mostly obscure because of its extreme rarity although some inherited syndromes and very low birth weight have been associated with it. The prognosis for children with HB has significantly improved in the past three decades thanks to advancements in chemotherapy, surgical resection and postoperative care. In 2002 a surgical staging system called pretreatment extent of disease(PRETEXT) was designed to allow a universal, multidisciplinary approach to patients with HB. Between one-third to two-thirds of patients initially present with unresectable tumors or distant metastases, but up to 85% of these tumors become operable after neoadjuvant chemotherapy. Patients with PRETEXT categories 1, 2, and some 3 are referred for neoadjuvant chemotherapy followed by surgical resection with the goal of complete tumor removal. Classic treatments regimens include a combination of cisplatin, fluorouracil, and vincristine or cisplatin and doxorubicin. Liver transplantation is the only treatment option for unresectable HB. In 2010 the pediatric end-stage liver disease, a pediatric-specific scoring system that determines a patient's ranking on the liver transplant list, began to award additional 'exception' points for patients with HB. We analyzed the Standard Transplant Analysis and Research dataset to assess the impact of changes in exception point criteria for HB on outcomes after liver transplantation at Texas Children's Hospital in Houston, Texas. We found that patients who were listed for transplantation with current HB exception criteria experienced a shorter waitlist time but survival was similar between the two eras.Saira Khaderi Jacfranz Guiteau Ronald T Cotton Christine O'Mahony Abbas Rana John A Goss 2014World Journal of Transplantation2014,4,4:23
3Zircon SHRIMP U-Pb dating of granites from Dulan and the chronological framework of the North Qaidam UHP belt, NW China显示文摘Zircon SHRIMP dating of granites from Dulan,east segment of North Qaidam UHP belt shows that they are 406.6±3.5 Ma for Yematan-E,407.3±4.3 and 397±6 Ma for Balijiehatan-W,404.5±4.0 and 397.0±3.7 Ma for Shuiwenzhan-N,380.5±5.0 Ma for Shuiwenzhan-S,382.5±3.6 and 372.5±2.8 Ma for Chachagongma.These granites from Dulan represent the products of the third and fourth periods of Paleozoic magmatism in North Qaidam.Geochemically,the granitoids with metalumious to weak peratuminous are quartz diorite,granodiorite,and granite in composition and mainly belong to calc-alkaline series,a few samples to calc or alkali-calc series.The third period of granites is a rock association of granodiorite+granite,with initial 87Sr/86Sr ratios from 0.7082 to 0.7110 and T2DM model ages from 1.41–1.90 Ga;and the fourth period of granites is a rock association of quartz diorite+granodiorite+granite,with initial 87Sr/86Sr ratios from 0.7072 to 0.7091 and T2DM model ages from 1.07–1.38 Ga.Therefore,the third period of granites has higher initial 87Sr/86Sr ratios and T2DM model ages.On the contrary,the fourth period of granites has Nd(t)values from 0.6 to-3.0,higher than that of the third granite with Nd(t)values-3.2 to-9.3.Thus,the data comparison indicates that the third granites may derive from Paleo-proterzoic continental crust with mantle material whereas the fourth granites may derive from the Meso-proterzoic basalt crust with continental material.Combined with regional geology,we thought that the third granites were formed relative to plate exhumation and the fourth granites to delamination of the lithospheric mantle.WU CaiLai GAO YuanHong LI ZhaoLi LEI Min QIN HaiPeng LI MinZe LIU ChunHua Ronald B FROST Paul T ROBINSON Joseph L WOODEN 2014Science China Earth Sciences2014,57,12:21
4Nationwide trends and predictors of inpatient mortality in 83884 transjugular intrahepatic portosystemic shunt显示文摘AIM: To evaluate and validate the national trends and predictors of in-patient mortality of transjugular intrahepatic portosystemic shunt(TIPS) in 15 years.METHODS: Using the National Inpatient Sample which is a part of Health Cost and Utilization Project, we identified a discharge-weighted national estimate of 83884 TIPS procedures performed in the United States from 1998 to 2012 using international classification of diseases-9 procedural code 39.1. The demographic, hospital and co-morbility data were analyzed using a multivariant analysis. Using multi-nominal logistic regression analysis, we determined predictive factors related to increases in-hospital mortality. Comorbidity measures are in accordance to the Comorbidity Software designed by the Agency for Healthcare Research and Quality.RESULTS: Overall, 12.3% of patients died during hospitalization with downward trend in-hospitalmortality with the mean length of stay of 10.8 ± 13.1 d. Notable, African American patients(OR = 1.809 vs Caucasian patients, P < 0.001), transferred patients(OR = 1.347 vs non-transferred, P < 0.001), emergency admissions(OR = 3.032 vs elective cases, P < 0.001), patients in the Northeast region(OR = 1.449 vs West, P < 0.001) had significantly higher odds of inhospital mortality. Number of diagnoses and number of procedures showed positive correlations with in-hospital death(OR = 1.249 per one increase in number of procedures). Patients diagnosed with acute respiratory failure(OR = 8.246), acute kidney failure(OR = 4.359), hepatic encephalopathy(OR = 2.217) and esophageal variceal bleeding(OR = 2.187) were at considerably higher odds of in-hospital death compared with ascites(OR = 0.136, P < 0.001). Comorbidity measures with the highest odds of in-hospital death were fluid and electrolyte disorders(OR = 2.823), coagulopathy(OR = 2.016), and lymphoma(OR = 1.842).CONCLUSION: The overall mortality of the TIPS procedure is steadily decreasing, though the length of stay has remained relatively constant. Specific patient ethnicity, location, transfer status, primary diagnosis and comorbidities correlate with increased odds of TIPS in-hospital death.Edward Wolfgang Lee Andrew Kuei Sammy Saab Ronald W Busuttil Francisco Durazo Steven-Huy Han Mohamed M El-Kabany Justin P Mc Williams Stephen T Kee 2016World Journal of Gastroenterology2016,22,25:7
5Proposed international clinical diabetic retinopathy and diabetic macular edema disease severity scales显示文摘C.P Wilkinson Frederick L Ferris Ronald E Klein Paul P Lee Carl David Agardh Matthew Davis Diana Dills Anselm Kampik R Pararajasegaram Juan T Verdaguer 2003Ophthalmology2003,,9:4
6Proposed international clinical diabetic retinopathy and diabetic macular edema disease severity scales显示文摘C.P Wilkinson Frederick L Ferris Ronald E Klein Paul P Lee Carl David Agardh Matthew Davis Diana Dills Anselm Kampik R Pararajasegaram Juan T Verdaguer 2003Ophthalmology2003,,9:2
7Chemical and pharmacological evaluation of Hypericum perforation extracts显示文摘KEY WORDS Hypericum perforation; High pressure liquid chromatography; serotonin uptake inhibitors; tree radicals; antioxidants; hyperforin; hypericin; quercetin; rutinABSTRACTAIM: To determine the concentrations of chemical characteristic to extracts of leaves and flowers of Hypericum perforatnm (St John’s wort) in a number of selected samples and, following chemical characterization, to investigate the effects of these extracts on several pharmacological properties including effects of the extracts on inhibition of 5-hydroxytryptamine (5-HT) uptake and on an-tioxidant properties. METHODS: The samples were analyzed for the presence of characteristic chemicals by high performance liquid chromatography (HPLC) directly coupled to ultraviolet wavelength absorbance and positive or negative mode electrospray mass spectrometric detection. The effects of extracts on 5-HT uptake were determined by quantifying 3H-5-HT incorporation into rat hip-pocampal prisms. Estimates of effects of extracts on free radicalB Duff SLOLEY Liana J URICHUK LING Lei GU Lie-Dong Ronald T COUTTS Peter K T PANG Jacqueline J SHAN 2000Acta Pharmacologica Sinica2000,21,12:2
8Ethanol inhibition of N-methyl-D-aspartate receptor is reduced by site-directed mutagenesis of a transmembrane domain phenylalanine residue显示文摘 Mirshahi T Woodward J J 2001J Biol Chem2001,276,44:1
9Hyperspectral vegetation indices and their relationship with agricuhural crop characteristics 显示文摘PRASD S T RONALD B S EDDY D P 2000Remote Sensing Environment2000,71,2:1
10A variable cluster of ethylene response factor-like genes regulates metabolic and developmental acclimation responses to submergence in rice显示文摘FUKAO T XU K N RONALD P C 2006Plant Ce112006,18,8:1
11TcpF is a soluble colonization factor and protective antigen secreted by E1 Tor and classical O1 and O139 Vibrio Cholerae serogroups显示文摘THOMAS J K RONALD K T 2005Infect Immun2005,73,8:1
12Role of c-Src and focal adhesion kinase in progression and metastasis of estrogen receptorpositive breast cancer 显示文摘Maricarmen D Richard D Ronald T 2006Biochem Biophys Res Commun2006,341,1:1
13A Schur complement inequality for certain P-matrices显示文摘Markham T L Ronald L Smith 1998Linear Algebra Appl1998,281,:1
14Asymptotic waveform evaluation for timing analysis显示文摘Pillage L T Rohrer Ronald A 1990IEEE Transactions on Computer aided Design of Integrated Circuits and Systems1990,9,4:1
15Block adaptive quantization of Magellan SAR data显示文摘Ronald K William J T K 1989IEEE Transactions Geoscience and Remote Sensing1989,27,4:1
16Pollution loads in urban runoff and sanitary wastewater 显示文摘AMIR T RONALD L D 2004Science of the Total Environment2004,327,:1
17Submer- gence Tolerant Rice: SUBI's Journey from Landrace to Modem Cultivar显示文摘BAILEY-SERRES J FUKAO T RONALD P 2010Rice2010,3,23:1
18Mycorrhizal fungi enhance accumulation and tolerance of chromium in sunflower (Hellanthus annuus ) 显示文摘Fred T D Jeffrey D P Ronald J N 2001Journal of Plant Physiology2001,158,6:1
19Using assessment centre methods for measuring undergraduate business student outcomes 显示文摘RONALD E R BRONSTON T M DEIDRA J S 2003Journal of Management Inquiry2003,,12:1
20Heavy metal flocculation by phosphonomethylated-polyethyleneimine and calcium ions 显示文摘Ronald R N Kenji W Kenji T 2003Separation Science and Technology2003,38,10:1
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