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1Field Relationships,Geochemistry,Zircon Ages and Evolution of a Late Archaean to Palaeoproterozoic Lower Crustal Section in the Hengshan Terrain of Northern China显示文摘The Hengshan complex forms part of the central zone of the North China Craton and consists predominantly of ductilely-deformed late Archaean to Palaeoproterozoic high-grade, partly migmatitic, granitoid orthogneisses, intruded by mafic dykes of gabbroic composition. Many highly strained rocks were previously misinterpreted as supracrustal sequences and represent mylonitized granitoids and sheared dykes. Our single zircon dating documents magmatic granitoid emplacement ages between 2.52 Ga and 2.48 Ga, with rare occurrences of 2.7 Ga gneisses, possibly reflecting an older basement. A few granitic gneisses have emplacement ages between 2.35 and 2.1 Ga and show the same structural features as the older rocks, indicating that the main deformation occurred after ~2.1 Ga. Intrusion of gabbroic dykes occurred at~1920 Ma, and all Hengshan rocks underwent granulite-facies metamorphism at 1.88-1.85 Ga, followed by retrogression, shearing and uplift.We interpret the Hengshan and adjacent Fuping granitoid gneisses as the lower, plutonic, part of a late Archaean to early Palaeoproterozoic Japan-type magmatic arc, with the upper, volcanic part represented by the nearby Wutai complex. Components of this arc may have evolved at a continental margin as indicated by the 2.7 Ga zircons. Major deformation and HP North China Craton collided to form the Trans-North China orogen. Shear zones in the Hengshan are interpreted as major lower crustal discontinuities post-dating the peak of HP metamorphism, and we suggest that they formed during orogenic collapse and uplift of the Hengshan complex in the late Palaeoproterozoic (<1.85 Ga).A. KRONER S.A. WILDE P.J. O'BRIEN LI Jianghai C.W. PASSCHIER N.P. WALTE LIU Dunyi 2005Acta Geologica Sinica(English Edition)2005,79,5:91
2多模态语篇分析的进展与前沿显示文摘1990年代以来,功能语言学与语篇分析的多模态转向使多模态语篇分析成为语言学与传播学研究的热点之一。近年来,多模态研究逐渐从将语言学理论简单应用于图像、手势等非语言符号的分析,转向对多模态表意资源的跨学科系统阐释与实证研究。因此,具有独特理论体系和分析方法的多模态研究正成为一个新兴的人文学科。一方面,融合语言学、传媒学、认知心理学等学科的跨学科理论体系正在形成并被应用于阐释动态语篇等更复杂的符号与行为体系;另一方面,应用电脑模拟、语料库检索等数字技术的新型研究工具和方法迅速发展。多模态分析的理论与方法也逐渐被应用于课堂教学、广告传媒、法庭辩论等各种社会行为和语篇的研究。冯德正 张德禄 Kay O'Halloran 2014当代语言学2014,16,1:112
3Evaluation of diagnostic findings and scoring systems in outcome prediction in acute pancreatitis显示文摘AIM: To determine factors related to disease severity, mortality and morbidity in acute pancreatitis. METHODS: One hundred and ninety-nine consecutive patients were admitted with the diagnosis of acute pancreatitis (AP) in a 5-year period (1998-2002). In a prospective design, demographic data, etiology, mean hospital admission time, clinical, radiological, biochemical findings, treatment modalities, mortality and morbidity were recorded. Endocrine insuffi ciency was investigated with oral glucose tolerance test. The relations between these parameters, scoring systems (Ranson, Imrie and APACHE Ⅱ) and patients' outcome were determined by using invariable tests and the receiver operating characteristics curve. RESULTS: One hundred patients were men and 99 were women; the mean age was 55 years. Biliary pancreatitis was the most common form, followed by idiopathic pancreatitis (53/ and 26/, respectively). Sixty-three patients had severe pancreatitis and 136 had mild disease. Respiratory rate > 20/min, pulse rate > 90/min, increased C-reactive protein (CRP), lactate dehydrogenase (LDH) and aspartate aminotransferase (AST) levels, organ necrosis > 30/ on computed tomography (CT) and leukocytosis were associated with severe disease. The rate of glucose intolerance, morbidity and mortality were 24.1/, 24.8/ and 13.6/, respectively. CRP > 142 mg/L, BUN > 22 mg/dL, LDH > 667 U/L, base excess > -5, CT severity index > 3 and APACHE score > 8 were related to morbidity and mortality. CONCLUSION: APACHE Ⅱ score, LDH, base excess and CT severity index have prognostic value and CRP is a reliable marker for predicting both mortality and morbidity.Ekrem Kaya Adem Dervi■o■lu Cafer Polat 2007World Journal of Gastroenterology2007,13,22:64
4Metabolic reprogramming in macrophages and dendritic cells in innate immunity显示文摘Beth Kelly Luke AJ O'Neill 2015Cell Research2015,25,7:70
5基于IMRT时代的第八版AJCC/UICC鼻咽癌临床分期建议显示文摘目的准确的分期系统对癌症的治疗至关重要。随着癌症分期和治疗方法的演变,需要不断评价分期的适用性和改进性。方法基于第7版AJCC/UICC分期回顾性分析香港和中国大陆2个肿瘤中心收治的1609例接受调强放射治疗的首诊无转移鼻咽癌患者临床资料,所有患者治疗前均行核磁共振分期评估。结果无其他T3、T4期解剖结构受侵患者中,伴有咀嚼肌间隙(翼内肌和/或翼外肌)侵犯、椎前肌侵犯及咽旁间隙侵犯的三组患者之间0s相近。伴广泛软组织(上述侵犯结构以外的软组织)受侵患者OS与伴有颅内侵犯或颅神经侵犯相似。仅2%患者锁骨上窝以上淋巴结转移者直径〉6cm,其0s率与下颈淋巴结转移者类似。用下颈(环状软骨尾侧缘水平以下)代替锁骨上窝并不影响N分期之间的风险差异性。采用推荐的T、N分期,T。N。、T。N,期0s相近。结论经AJCC/UICC分期筹备委员会审阅后,建议第8版分期应将翼内肌/翼外肌从T。降到T:期,增加椎前肌为L期,用下颈取代锁骨上窝,将淋巴结最大直径〉6cm合并归为N,期,将T。、N,期统一归为Ⅳ。期。这些改变不仅使得相邻分期间风险差异性更好,而且使得临床实践性与全球适用性之间达到最佳平衡。潘建基 Wai Tong Ng 宗井凤 Lucy L.K.Chan Brian O' Sullivan 林少俊 Henry C.K.Sze 陈韵彬 Horace C.W.Choi 郭巧娟 Wai Kuen Kan 肖友平 Xu Wei Quynh Thu Le Christine M.Glastonbury A.Dimtrios Colevas Randal S.Weber Jatin P.Shah Anne W.M.Lee 2016中华放射肿瘤学杂志2016,25,3:65
6Liver immunology and its role in inflammation and homeostasis显示文摘当一个非免疫学的机关首先从事了新陈代谢的、滋养的存储和 detoxification 活动,人的肝通常被察觉。然而,我们现在知道健康的肝也是复杂免疫学的一个地点活动象非造血的房间人口一样由一个多样的有免疫力的房间全部剧目调停了。在疾病得非的肝,新陈代谢并且织物改变功能要求发炎的元素。在有到饮食、微生物引起的产品的常规暴露的联合,这发炎为过多的有免疫力的激活创造潜力。在这复杂微型环境,肝的免疫系统容忍无害的分子当同时对可能的传染代理人仍然保持警惕时,恶意的房间或纸巾损坏。在到由病原体或织物损坏的挑战的适当有免疫力的激活之上,解决发炎的机制是必要的维持肝动态平衡。清除 ‘ 的失败; dangerous’刺激或调整适当地激活的有免疫力的机制导致病理学的发炎和纤维变性,肝硬化和最终的肝失败的进步发展描绘的破坏织物动态平衡。肝的煽动性的机制因此在健康的成年的肝有角色的一个系列;他们是必要的维持织物和机关动态平衡并且 dysregulated,肝病理的关键司机与长期的感染, autoimmunity 和恶意被联系。在这评论,我们在正常的肝动态平衡探索发炎和煽动性的调停人的变化感觉并且求婚作为一条治疗学的途径肝特定的有免疫力的规定小径指向治疗肝疾病。Mark W Robinson Cathal Harmon Cliona O'Farrelly 2016Cellular & Molecular Immunology2016,13,3:65
7Viral and host causes of fatty liver in chronic hepatitis B显示文摘AIM: To investigate the viral and host causes of fatty liver in chronic hepatitis B patients and the role of fat deposits in liver damage.METHODS: A total of 164 patients (113 males and 51 females, average age 35±11.3 years, and range 10-62 years) with previously untreated chronic hepatitis B were included in the study. The patients were divided into two groups depending on the result of liver biopsy: group without steatosis (100 patients with <5% hepatosteatosis) and group with steatosis (64 patients with >5% hepatosteatosis). The groups were compared in terms of gender, body mass index (BMI), liver enzymes (ALT, AST, ALP, GGT), cholesterol, triglyceride, HBeAg, viral load, and histological findings. In the group with steatosis, the patients were subdivided depending on the degree of steatosis into mild group (45 patients with 5-24% steatosis), and severe group (19 patients with >25% steatosis). RESULTS: In the group of chronic hepatitis B with steatosis, the mean age, BMI, cholesterol, and triglyceride levels were significantly higher than those in the group without steatosis (P<0.05). Steatosis was found in 53 (46.9%) of male patients and 11 (22%) of female patients (P<0.05). No significant difference was found in the positivity of ALT, AST, ALP, GGT, HBeAg, viral load, histological activity index (HAI) and stage between the two groups (P>0.05). In the group with severe steatosis, the BMI was significantly higher than that in the group with mild steatosis (P<0.05). No significant difference was found in the other parameters between the groups (P>0.05). CONCLUSION: Steatosis in chronic hepatitis B appears to be a result of metabolic factors of the host rather than the effect of viruses. Steatosis is unrelated to the HAI and degree of fibrosis, which are considered as the histological indicators of liver damage.Emin Altiparmak Seyfettin K(o|¨)klü Mesut Yalinkilic Osman Yüksel Bahattin Cicek Ertugrul Kayacetin Tülin Sahin 2005World Journal of Gastroenterology2005,11,20:52
8Report of an international workshop to standardize baseline evaluation and response criteria for primary CNS lymphoma.显示文摘Abrey LE Batchelor TT Ferreri A J Gospodarowicz M Pulczynski EJ Zucca E Smith JR Korfel A Soussain C DeAngelis LM Neuwelt EA O′Neill BP Thiel E Shenkier T Graus F van den Bent M Seymour JF Poortmans P Armitage JO Cavalli F 2005中国神经肿瘤杂志2005,3,3:53
9华夏南部可能存在Grenville期造山作用:来自基底变质岩中锆石U-Pb定年及Lu-Hf同位素信息显示文摘对华夏地块南部粤中增城和赣南鹤仔3个基底变质岩的地球化学和碎屑锆石年代学研究表明,它们的原岩都是形成于晚新元古代的沉积岩.3个变质沉积岩都主要由新元古代早期(1.0~0.9Ga)的碎屑物质组成,并混有少量中元古代和新元古代中晚期(0.8~0.6Ga)的碎屑物,说明沉积物主要来源于一个遭受过Gondwana大陆聚合事件影响的Grenville期造山带.碎屑锆石的Hf同位素成分显示这些Grenville期锆石可能是造山旋回早期形成的弧与古老大陆碰撞产生的岩浆结晶的.结合华夏地块其他地区~1.0Ga年龄锆石的分布及形态学特征,本文认为华夏地块的南缘很可能曾经存在或者极其靠近一个Grenville期的造山带.而这期造山作用的时代与东印度以及东南极的Grenville造山带一致,且同样受到Gondwana大陆聚合事件的影响.因此,从Rodinia超大陆裂解到Gondwana超大陆聚合期间,华南地块很可能位于澳大利亚西部而与东印度和东南极相邻.王丽娟 于津海 O’Reilly S.Y. Griffin W.L. 孙涛 魏震洋 舒良树 蒋少涌 2008科学通报2008,53,14:52
10稻麦精准变量施肥机排肥性能分析与试验显示文摘为提高基于近地光谱技术的稻麦精准变量施肥机排肥性能稳定性,改善变量施肥控制精度,建立了外槽轮式变量施肥机离散元仿真模型,运用离散单元法和EDEM 2.2软件对施肥机排肥过程进行性能分析和数值模拟,研究不同排肥器结构和施肥控制策略对施肥机排肥稳定性的影响,并通过台架试验和田间试验验证仿真模型的准确性。结果表明:改进后的排肥器施肥量变异性系数明显减小,标准差减小14.59 g,变异系数降低9.9%;采用转速优先控制策略,当槽轮开度为19.34 mm时,排肥量稳定性系数最佳为1.09%;采用开度优先控制策略,当槽轮转速为55.75 r/min时,排肥量变异性系数最小为1.85%;与验证试验结果相比,误差最大为14.06%。结果验证了离散元仿真方法分析颗粒运动过程的准确性,表明所设计改进的排肥器能够提高施肥机排肥稳定性,满足稻麦精准变量施肥要求。施印炎 陈满 汪小旵 ODHIAMBO M O 章永年 丁为民 2017农业机械学报2017,48,7:56
11血管性认知损害诊断的进一步规范化:血管性认知损害分类共识研究组指南显示文摘引言血管性认知损害(vascular cognitive impairment,VCI)诊断共识的缺乏(体现为多种不同评估方案的使用),妨碍了对其理解和治疗的推进.多个国家的大量临床医生和研究人员参与了2个阶段血管性认知损害分类共识研究(Vascular Impairment of Cognition Classification Consensus Study,VICCCS),旨在就VCI的诊断原则(VICCCS-1)和诊断方案(VICCCS-2)达成一致意见.本文提供了VICCCS-2的相关内容.方法使用VICCCS-1达成的原则和已发表的诊断指南作为在线德尔菲(Delphi)调查的参考基点,以期对VCI的临床诊断达成共识.结果共进行了6轮调查,每轮有65~79名专家参与,他们就VICCCS修订的轻度和重度VCI的诊断指南达成共识,并肯定了美国国立神经疾病与卒中研究所-加拿大卒中网(National Institute of Neurological Disorders and Stroke–Canadian Stroke Network,NINDS-CSN)发布的神经心理学评估方案和对影像学检查的推荐意见.讨论VICCCS-2建议规范化应用NINDS-CSN推荐的神经心理学和影像学评估方案诊断VCI,以促进研究协作.Olivia A. Skrobot Sandra E. Black Christopher Chen Charles DeCarli Timo Erkinjuntti Gary A. Ford Rajesh N. Kalaria John O'Brien Leonardo Pantoni Florence Pasquier Gustavo C. Roman Anders Wallin Perminder Sachdev Ingmar Skoog the VICCCS group Yoav Ben-Shlomo Anthony P. Passmore Seth Love Patrick G. Kehoe 朱婷珂 徐俊 2018国际脑血管病杂志2018,26,4:58
12Different profiles of cytokine expression during mild and severe acute pancreatitis显示文摘AIM:To study secretion patterns of proand anti-in-flammatory cytokines, and activation of various cellular subsets of leukocytes in peripheral blood.METHODS: We have conducted a prospective obser-vational study. One hundred and eight patients with a diagnosis of acute pancreatitis and onset of the disease within last 72 h were included in this study. The mRNA expression of 25 different types of cytokines in white blood cells was determined by quantitative real time polymerase chain reaction. Levels of 8 different cytokines in blood serum were measured by enzymelinked immunosorbent assay. Clinical data and cytokine expression results were subjected to statistical analysis.RESULTS: Severe and necrotizing acute pancreatitis (AP) is characterized by the significant depletion of circulating lymphocytes. Severe acute pancreatitis is as-sociated with a typical systemic inflammatory response syndrome and over-expression of pro-inflammatory cy-tokines [interleukin (IL)-6, IL-8, macrophage migration inhibitory factor (MIF)]. Serum IL-6 and MIF concentra-tions are the best discriminators of severe and necrotiz-ing AP as well as possible fatal outcome during the early course of the disease. CONCLUSION: Deregulation of cellular immune sys-tem is a key event leading to severe and necrotizing AP. IL-6 and MIF could be used as early predictors of complications.Zilvinas Dambrauskas Nathalia Giese Antanas Gulbinas Thomas Giese Pascal O Berberat Juozas Pundzius Giedrius Barauskas Helmut Friess 2010World Journal of Gastroenterology2010,16,15:49
13Finding of ancient materials in Cathaysia and implication for the formation of Precambrian crust显示文摘在 Nanxiongarea 从帕拉片麻岩为 56 由岩屑形成的锆石标明日期的 U-Pb,北广东省,显示在 Cathaysiahinterland 的最近的 Neoproterozoic 沉积由众多的 Grenvillian 和 Neoarchaean 组成碎屑状的材料,以及 someMesoproterozoic 岩屑。次要的 Paleoarchaean (3.76 Ga ) 和 Mesoarchaean (3.0—3.2 Ga ) 锆石,是在华南的最旧的锆石,第一也在沉积被发现,建议卡赛西亚·布洛克可以包含很旧的材料。thirty-sevenzircons 的 Hf 同位素作文表明这些碎屑状的材料有不同起源。次要的锆石从产生从的岩浆结晶相对少年外壳,当大多数锆石的父母岩浆从古老的外壳被导出时。U-Pb 标明日期和这些锆石的 Hf 同位素分析的集成建议在 Cathaysia 块的少年外壳的产生主要发生在 2.5 点—2.6Ga。Mesoarchaean (3.0—3.3 Ga ) ,迟了的 Paleoproterozoic (~ 1 .8 Ga ) 和 Paleoarchaean (~ 3 .7 Ga ) 可以也是外壳的生长的重要事件。Grenvillian magmatism 是极其强烈的,但是它主要涉及与少年外壳的很少形成古老的外壳的部件再循环。~ 2 .1 Ga Hf 模型年龄的 Themarked 存在和有结晶化的锆石的缺席在~ 2 .1 Ga 变老建议许多锆石的父母岩浆可能从由 Neoarchaean 和迟了的 Paleoproterozoic 材料组成的混合来源被导出。YU JinHai Y S O'REILLY WANG LiJuan W L GRIFFIN JIANG ShaoYong WANG RuCheng XU XiSheng 2007Chinese Science Bulletin2007,52,1:47
14瑞舒伐他汀对存在亚临床动脉粥样硬化的低危人群颈动脉内膜中层厚度进展的影响——METEOR试验显示文摘背景:动脉粥样硬化往往在机体出现症状之前就已有所进展。目前,我们尚不清楚Framingham风险评分(Framinghaln risk score,FRS)较低的轻中度亚临床动脉粥样硬化中年人群是否能从治疗中获益。 目的:评价为期2年的他汀类药物治疗能否减缓颈动脉内膜中层厚度(carotid intimamedia thickness,CIMT)继续增厚或使粥样斑块消退。 设计、地点及参试者:“瑞舒伐他汀对内膜中层厚度影响的测评研究(Measuring Effects on Intima-Media Thickness:an Evaluation of Rosuvastatin,METEOR)”是2002年8月至2006年5月在美国及欧洲61个基层医疗中心开展的一项随机、双盲、安慰剂对照研究,共纳入984名参试者,有的参试者仅以年龄(平均年龄,57岁)为冠心病的危险因素,有的参试者10年内FRS低于10%、CIMT重庞增厚(1.2~3.5mm)、LDL胆固醇水平有所升高(平均值,154mg/dL)。 干预:参试者服用40mg瑞舒伐他汀或安慰剂。 主要观测指标:12个颈动脉位点最大CIMT的变化率(经B超检测);颈总动脉位点、颈动脉窦位点及颈内动脉位点最大CIMT的变化,颈总动脉位点平均CIMT的变化。仅在瑞舒伐他汀组中评估CIMT的消退情况。 结果:瑞舒伐他汀组参试者LDL胆固醇平均(SD)水平由基线时的155(24.1)mg/dL降至78(27.5)mg/dL,平均降低49%(与安慰剂组相比P〈0.001)。瑞舒伐他汀组12个颈动脉位点最大CIMT的变化值为-0.0014(95%CI,-0.0041~0.0014)mm/y,安慰剂组12个颈动脉位点最大CIMT的变化值为Q0131(95%CI,Q0087~Q0174)mm/y(P〈0.001)。瑞舒伐他汀组颈总动脉位点最大CIMT的变化值为-0.0038(95%CI,-0.0064~-0.0013)mm/y(P〈0.001),颈动脉窦位点最大CIMT的变化值为-0.0040(95%CI,-0.0090~0.0010)mm/y(P〈0.001),颈内动脉位点最大CIMT的变化值为0.0039(95%CI,-0.0009~0.0088)mm/y(P=0.02)。瑞舒伐他汀组颈总动脉位点平均CIMT的变化值为0.0004(95%CI,-0.0011~0.0019)mm/y(P〈0.001)。P值均为与安慰剂组相比。总的来说,瑞舒伐他汀具有良好的耐受性,很少引发严重的心血管不良事件(在2年内有6名参试者[0.86%]出现8起不良事件[1.1%])。 结论:对于FRS低于10%的亚临床动脉粥样硬化中年人群而言,瑞舒伐他汀能够在2年内显著降低最大CIMT的进展速率,与安慰剂相比差异具有统计学显著性。但是,瑞舒伐他汀无法诱导病变消退。今后,我们仍需开展大型远期试验来明确上述研究结果的临床意义.John R. Crouse Ⅲ Joel S. Raichlen Ward A. Riley Gregory W. Evans Mike K. Palmer Daniel H. O' Leary Diederick E. Grobbee Michiel L. Bots 李军(译) 2007美国医学会杂志(中文版)2007,26,4:44
15东准噶尔盆地巴塔玛依内山组火山岩锆石U-Pb年代及Hf同位素研究显示文摘对准噶尔盆地陆梁隆起东部三参1井所钻巴塔玛依内山组玄武岩,开展了详细锆石内部结构研究基础上的U-Pb年代学、微量元素和Hf同位素系统分析.结果显示,所有锆石都属岩浆成因,都有一致的稀土配分型式,都具明显的Ce正异常(δCe=5.06~134)、Eu负异常(δEu=0.06~0.55)和重稀土元素富集特征.25颗锆石中,谐和年龄主要分成3组,分别是(300.4±1.3)Ma(n=11),(339.2±2.7)Ma(n=3)和(392.0±1.7)Ma(n=8);此外,还有3颗近谐和年龄锆石,它们的206Pb/238U年龄分别是(510±7),(488±6)和(453±6)Ma.最小的谐和年龄为(300.4±1.3)Ma,可以代表巴塔玛依内山组火山岩的形成时代(如晚阶段年龄).其他年龄如早泥盆世、奥陶纪等,与盆地周缘岛弧火山岩(富集Pb)和蛇绿岩的时代一致,而且这些年龄锆石都具有正的εHf(t)值(+3.6^+10.5),推测所研究火山岩穿越的盆地基底,可能与由早古生代-中古生代的残余洋壳和岛弧地体组成有关.晚石炭世锆石的εHf(t)值变化于+17.1^+4.2,显示该玄武岩主要来源于软流圈地幔或亏损岩石圈地幔熔融作用,熔体在上升-侵位过程中混染了少量较古老基底物质组分.由于这些玄武岩是后碰撞幔源岩浆直接加入到地壳的物质表现,推测东准噶尔地区晚石炭世已经有了大规模的陆壳垂向生长过程.苏玉平 郑建平 Griffin William L 汤华云 O'Reilly Suzanne Y 林向洋 2010科学通报2010,55,30:50
16层状复合金属氢氧化物:结构、性质及其应用显示文摘本文评述层状复合金属氢氧化物(layered double hydroxides,LDH s)的化学及其应用。层状复合金属氢氧化物具有结合紧密的氢氧化物层和处于层间的阴离子,其比较突出的化学性质是可逆的阴离子交换和热分解性质。不过,因为受到氢氧化物层的局限,处于层间的阴离子表现出的特殊化学性质近年来也越来越受到重视。利用上述三个方面的性质,人们发掘了层状复合金属氢氧化物在材料(包括有机无机复合材料)制备、离子交换与有害阴离子脱除、异构体化学分离、化学反应控制、阻燃材料、活性分子储存与缓释、局部化学反应合成、催化剂及催化剂载体等方面的应用。雷立旭 张卫锋 胡猛 Dermot O'Hare 2005无机化学学报2005,21,4:37
17Formation history and protolith characteristics of granulite facies metamorphic rock in Central Cathaysia deduced from U-Pb and Lu-Hf isotopic studies of single zircon grains显示文摘The petrochemical as well as zircon U-Pb and Lu-Hf isotopic studies of granulite facies metamorphic rock from the Taoxi Group in eastern Nanling Range, Central Cathaysia indicate that its protolith is the sedimentary rock with low maturation index. The clastic materials are mostly from middle Neoproterozoic (~736 Ma) granitoid rocks with minor Neoarchaean and Paleoproterozoic rocks. The timing of this Neoproterozoic magmatism is in agreement with the second period of magmatism widespread surrounding the Yangtze Block. Hf isotopic data indicate that the Neoproterozoic granitoids resulted from the recycled Paleoproterozoic mantle-derived crustal materials. The sedimentary rock was deposited in Late Neoproterozoic Era, and carried into low crust in Early Paleozoic. The partial melting of the meta-sedimentary rock took place at about 480 Ma and subsequently granulite facies metamorphism occurred at ca. 443 Ma. The zircons forming during this time interval (Early Paleozoic) show large Hf isotope variations, and their -Hf(t) values increase from -13.2 to +2.36 with decreasing age, suggesting the injection of mantle-derived materials during partial melting and metamorphism processes in the Early Paleozoic. Calculation results show that this metamorphic rock, if evolved to Mesozoic, has similar isotopic composition to the nearby Mesozoic high Si peraluminous granites, implying that this kind of granulite facies metamorphic rock is probably the source material of some Mesozoic peraluminous granitoids in eastern Nanling Range.YU Jinhai ZHOU Xinmin Y. S. O'Reilly ZHAO Lei W. L. Griffin WANG Rucheng WANG Lijuan CHEN Xiaomin 2005Chinese Science Bulletin2005,50,18:35
18Management of hilar cholangiocarcinoma in the North of England: Pathology, treatment, and outcome显示文摘AIM: To assess the management and outcome of hilar cholangiocarcinoma (Klatskin tumor) in a single tertiary referral center.METHODS: The notes of all patients with a diagnosis of hilar cholangiocarcinoma referred to our unit for over an 8-year period were identified and retrospectively reviewed. Presentation, management and outcome were assessed.RESULTS: Seventy-five patients were identified. The median age was 64 years (range 34-84 years). Male to female ratio was 1:1. Eighty-nine percent of patients presented with jaundice. Most patients referred were under Bismuth classification 3a, 3b or 4. Seventy patients required biliary drainage, 65 patients required 152percutaneous drainage procedures, and 25 had other complications. Forty-one patients had 51 endoscopic drainage procedures performed (15 failed). Of these,36 subsequently required percutaneous drainage. The median number of drainage procedures for all patients was three, 18 patients underwent resection (24%), nine had major complications and three died post-operatively.The 5-year survival rate was 4.2% for all patients, 21%for resected patients and 0% for those who did not undergo resection (P = 0.0021). The median number of admissions after diagnosis in resected patients was two and three in non-resected patients (P<0.05).Twelve patients had external-beam radiotherapy, seven brachytherapy, and eight chemotherapy. There was no significant benefit in terms of survival (P = 0.46) or hospital admissions.CONCLUSION: Resection increases survival but carries the risk of significant morbidity and mortality.Percutaneous biliary drainage is almost always necessary and endoscopic drainage should be avoided if possible.SD Mansfield O Barakat RM Charnley BC Jaques CB O'Suilleabhain PJ Atherton D Manas 2005World Journal of Gastroenterology2005,11,48:37
19土壤保持耕作——全球农业可持续发展优先领域显示文摘从农业活动对全球变化以及对农业可持续发展的影响进而导致全球性土壤保持需求的迫切性增加出发,追踪了国外土壤保持耕作领域的研究和发展动态;对中国该领域研究发展现状和研究水平,从时间、深度、方法、生产应用等方面与国外进行了比较分析。中国是一个水土流失和耕地退化严重的农业大国,而从全球统计数字来看,中国土壤保持耕作面积目前仅占全球保持耕作面积的0.2%,仅占全国耕地面积的0.1%,其现状与中国耕地资源和环境的继续退化以及对土壤保持耕作需求的增加极不相符。加强中国土壤保持耕作系统研究和土壤保持耕作“节能固碳”长期建设不仅对中国而且对全球变化及农业可持续发展具有重大意义。鉴于中国土壤保持耕作领域研究和发展所存在的不足和所面临的更大挑战,以及该领域研究涉及到复杂的农业系统“耕作管理-生物过程-环境变化”相互作用及其系统能流-碳流循环过程,尤其农业生态系统碳汇/源估量尚存在诸多不确定性因素等科学问题,有必要运用综合的系统性研究分析方法,借助国外长期试验和理论研究经验,以及系统模型模拟研究手段等多学科和交叉学科知识,加速提升中国土壤保持耕作领域的科研实力和水平,为实现碳汇/源科学调控管理、减缓农业对温室效应贡献、促进农业可持续发展提供科学依据。王小彬 蔡典雄 华珞 Hoogmoed W B Oenema O Perdok U D 2006中国农业科学2006,39,4:35
20AGNP精神科治疗药物监测共识指南:2011显示文摘治疗药物监测(Therapeutic drug monitoring,TDM),如通过定量测定血清或血浆药物浓度指导用药剂量优化,已经成为对患者进行精神药物治疗的很有价值的工具。在患者用药依从性难以判断、药物耐受性不佳、治疗剂量下无效以及可能存在药代动力学药物-药物相互作用等情况下,测定药物浓度是很有用的。在精神科,有可能明显获益于TDM的主要患者群体包括儿童、孕妇、老年患者、智力障碍患者、涉及司法的患者、已知或怀疑携带药代动力学相关基因变异的患者,以及合并躯体疾病影响药代动力学的患者。然而,只有将TDM充分整合到临床治疗过程中去,才能发挥其优化药物治疗的潜在优势。为了促进TDM的合理应用,神经精神药理学与药物精神病学协会(Arbeitsgemeinschaft für Neuropsychopharmakologie und Pharmakopsychiatrie,AGNP)的TDM专家组在2004年发表了精神药物治疗药物监测指南。之后,随着知识不断更新,又有许多可能需要进行TDM的新药上市。因此,本次更新将神经精神药物的种类扩展到了128种,并将其TDM必要性划分为从'强烈推荐'到'可能有用'的四个等级。经过大量细致且全面的文献检索与分门别类的汇总整理,将基于循证医学理念的'治疗参考浓度范围'和'剂量相关参考浓度范围'呈现给大家。本共识指南引入了'实验室警戒浓度'的新概念,即实验室需要马上告知治疗医生的药物浓度上限。本共识指南还给出了诸如药物作为细胞色素P450酶的底物和抑制剂的性质,代谢物与母药浓度比值的常见范围,以及与结果解释相关的内容,还提供了何时将TDM与遗传药理学检测相结合的建议。遵循本指南,有助于改善许多患者精神药物治疗的效果,特别是那些存在药代动力学异常的患者。TDM是一门交叉学科,有时针对看起来不一致的数据,需要多学科坦诚地讨论,只有这样,患者才能从这种合作中获益。Hiemke C Baumann P Bergemann N Conca A Dietmaier O Egberts K Fric M Gerlach M Greiner C Gründer G Haen E Havemann-Reinecke U Jaquenoud Sirot E Kirchherr H Laux G Lutz UC Messer T Müller MJ Pfuhlmann B Rambeck B Riederer P Schoppek B Stingl J Uhr M Ulrich S Waschgler R Zernig G 李文标(译) 果伟(译) 阮灿军(译) 贺静(译) 汤宜朗(审校) 王传跃(审校) 2016实用药物与临床2016,19,10:37
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