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| 1 | 沙漠-绿洲过渡带四种多年生植物水分关系特征显示文摘沙漠 -绿洲过渡带地区植被的可持续性在防止绿洲沙漠化的过程中非常重要。对过渡带主要植物种骆驼刺 (Alhagisparsifolia Shap)、多枝柽柳 (Tamarix ramosissima L ebed.)、胡杨 (Populus euphratica Oliv.)和头状沙拐枣 (Calligonum caput-medusae Schrenk.)水分关系的研究表明 :4种植物的水分恢复状况良好 ,清晨水势一直较高 ,水分亏缺并不严重。渗透势和正午水势的降低幅度不大 ,变化比较平稳 ,更像是一种生长过程中的结果 ,植物的水分胁迫状况并不明显。 4种植物的水势和渗透势都高于典型的荒漠植物 ,属于中生植物的范围。水分参数的变化显示在同样的环境节律下 ,四种植物在水分生理的变化特征上有一致性。一直很高的 RWCp 值表明植物不能适应剧烈的水分损失和较低的水分含量 ,植物需要稳定充足的水分供应来适应塔克拉玛干极端气候条件下的生长环境。植物对环境胁迫也有各自不同的生理适应特点 ,胡杨的ΔΠ值大 ,能忍受较多的水分损失维持气孔的开放 ;骆驼刺的Ψp 值最高 ,水分亏缺的平衡与恢复效果明显 ;C4 植物头状沙拐枣能维持较高的水势和渗透势 ,而盐土植物多枝柽柳能忍受水势的很大降低。夏季一次性灌溉对骆驼刺、多枝柽柳和胡杨水分状况的改善基本没有影响 ,对头状沙拐枣有一定的帮助。植物? | 李向义 张希明 何兴元 曾凡江 Andrea FOETZKI Frank M THOMAS | 2004 | 生态学报2004,24,6: | 49 |
| 2 | 塔干南缘骆驼刺植被水分关系的研究(英文)显示文摘对塔克拉玛干沙漠———绿洲过渡带骆驼刺 (AlhagisparsifoliaShap .)水分关系的研究表明 :骆驼刺在夏季保持了正的膨压 ,一直较高较稳定的清晨水势说明植物水分恢复状况良好 ,植物得到了较好的水分供应 ;在 7月 ,干旱胁迫造成的水分亏缺并未影响植株正常的蒸腾作用 ,因而干旱引起的水分胁迫并未威胁到植被的存在。骆驼刺对干旱胁迫的水分生理适应主要体现在叶水平上 ,表现为饱和枝条的渗透势 (Πo)和膨压消失点的渗透势 (Πp)的差值 (ΔΠ)和相对含水量 (RWC)在膨压消失点间更大的变化、渗透调节的产生、较高较稳定的饱和枝条水分与干物质之比 (WCsat)和膨压消失点的相对含水量 (RWCp) ,以及较低的共质体水在总水分中的相对含量 (RWCsym)。但形态学上的特征 ,主要表现为深而发达的根系和蒸腾面积的减少 ,才是骆驼刺适应极端干旱环境的主要途径。非定期的夏季一次性灌溉对地下水位很低地区的骆驼刺植被水分状况的恢复没有帮助。 | 李向义 张希明 曾凡江 Andrea FOETZKI Frank M .THOMAS 李小明 Michael RUNGE 何兴元 | 2002 | Acta Botanica Sinica2002,44,10: | 22 |
| 3 | 报告随机对照试验的CONSORT声明修订版:说明与详述(一)显示文摘有充分的证据表明目前随机对照试验(RCT)的报告质量不尽如人意。最近的方法学调查表明,不恰当的报告及试验设计将使治疗措施的效果产生偏倚。这种系统偏差正严重损害RCT本可摒弃系统偏差的特征。RCT中的系统偏差反映出了科学性差,而科学性差会严重影响正确的伦理标准。科学家和编辑们共同制定了CONSORT(试验报告统一标准,ConsolidatedStandardsofReportingTrials,)声明以提高RCT报告质量。CONSORT声明由清单和流程图组成,作者可用来报告RCT。许多优秀期刊和重要国际性编辑组织已经采用CONSORT声明。CONSORT声明为作者提高临床试验报告质量提供指南,使得评价和解释RCT结果更方便。此文旨在增强大家对CONSORT声明的理解、应用和传播,并对每个清单项目的意义和原理进行了说明。很多项目都列出优秀报告的示例,并尽可能参考相关的经验性研究,还列出几个流程图的示例。CONSORT声明的说明和详述文件在以下网址可找到:http://www.consort-statement.org,这是提高随机对照试验报告质量的有益资源。 | Douglas G.Altman Kenneth F.Schulz David Moher Matthias Egger Frank Davidoff Diana Elbourne Peter C.Gφtzsch Thomas Lang the CONSORT Group 刘雪梅 | 2005 | 中国循证医学杂志2005,5,9: | 19 |
| 4 | 风力发电机中轴承的过电流问题显示文摘介绍了异步电动机中寄生电流的起因和影响,同时指出了双馈发电机与异步电动机在这方面的区别。讨论了轴承的一般电气性能,并展示了轴承损伤内部机理的最新研究成果。 | Zika Thomas Buschbeck Frank Preisinger Gerwin Martin Groschl 王勇 赵明 | 2008 | 电机与控制应用2008,35,9: | 13 |
| 5 | Aquaporin-8 expression is reduced in ileum and induced in colon of patients with ulcerative colitis显示文摘AIM: To study susceptibility genes which may play a potential role in the pathogenesis and etiology of inflammatory bowel disease (IBD). METHODS: To identify potential susceptibility genes we performed global gene expression profiling in patients with IBD and control specimens. For determination of an intrinsic gene expression profile in ulcerative colitis (UC) and Crohn’s disease (CD) compared to normal subjects, mucosal biopsies of non-inflamed regions of the colon and the terminal ileum were subjected to DNA microarray analysis. Real-time RT-PCR and immunohistochemistry were used for verification of selected regulated candidate genes and a genetic analysis was performed. RESULTS: We could show that aquaporin-8 (AQP8) mRNA and protein levels were significantly increased in the colon of UC patients compared to controls. Genetic analysis of the six exons and the promoter region of AQP8, however, revealed no mutations or polymorphisms in IBD patients. CONCLUSION: Our results suggest that upregulation of AQP8 in the colon of UC patients represents a secondary phenomenon which may, due to altered water exchange of the distal intestinal mucosa, disturb the physiologic colonic mucus barrier and thus lead to chronic infla- mmation and ulceration. | Alexandra Zahn Christoph Moehle Thomas Langmann Robert Ehehalt Frank Autschbach Wolfgang Stremmel Gerd Schmitz | 2007 | World Journal of Gastroenterology2007,13,11: | 13 |
| 6 | Increased liver stiffness in alcoholic liver disease:Differentiating fibrosis from steatohepatitis显示文摘AIM:To test if inflammation also interferes with liver stiffness (LS) assessment in alcoholic liver disease (ALD) and to provide a clinical algorithm for reliable fibrosis assessment in ALD by FibroScan (FS).METHODS:We first performed sequential LS analysis before and after normalization of serum transaminases in a learning cohort of 50 patients with ALD admitted for alcohol detoxification. LS decreased in almost all patients within a mean observation interval of 5.3 d. Six patients (12%) would have been misdiagnosed with F3and F4 fibrosis but LS decreased below critical cut-off values of 8 and 12.5 kPa after normalization of trans-aminases. RESULTS:Of the serum transaminases,the decrease in LS correlated best with the decrease in glutamic oxaloacetic transaminase (GOT). No significant chang-es in LS were observed below GOT levels of 100 U/L. After establishing the association between LS and GOT levels,we applied the rule of GOT < 100 U/L for reliable LS assessment in a second validation cohort of 101 patients with histologically confi rmed ALD. By ex-cluding those patients with GOT > 100 U/L at the time of LS assessment from this cohort,the area under the receiver operating characteristic (AUROC) for cirrhosis detection by FS improved from 0.921 to 0.945 while specificity increased from 80% to 90% at a sensitivity of 96%. A similar AUROC could be obtained for lower F3 fibrosis stage if LS measurements were restricted to patients with GOT < 50 U/L. Histological grading of inflammation did not further improve the diagnostic accuracy of LS.CONCLUSION:Coexisting steatohepatitis markedly increases LS in patients with ALD independent of fibrosis stage. Postponing cirrhosis assessment by FS during alcohol withdrawal until GOT decreases to < 100 U/mL signif icantly improves the diagnostic accuracy. | Sebastian Mueller Gunda Millonig Lucie Sarovska Stefanie Friedrich Frank M Reimann Maria Pritsch Silke Eisele Felix Stickel Thomas Longerich Peter Schirmacher Helmut Karl Seitz | 2010 | World Journal of Gastroenterology2010,16,8: | 10 |
| 7 | Differential treatment and early outcome in the interventional endoscopic management of pancreatic pseudocysts in 27 patients显示文摘瞄准:胰腺的假包囊(PPC ) 仅仅在腹的疼痛的情况中作为胰腺炎的复杂并发症被接近,感染,流血,并且压缩到胃肠道或胆汁的树上。方法:从 02/01/2002 到 05/31/2004,经历了 interventional 的有征兆的 PPC 的所有连续病人内视镜的途径在这飞行员盒子系列研究被评估:组(Gr ) 我主要经皮(外部) ,指导超声的排水。Gr。II 主要的指导 EUS 的胰囊肿胃吻合术。Gr。包括 intracystic necrosectomy 的 III-EUS-guided 胰囊肿胃吻合术。结果:( = “列在后面在上面”:n = 27 ) :Gr。我(n = 9;33.3%) :没有抱怨(n = 3 ) ;变化一进内部排水外部(n = 4 ) ;复杂并发症:(a) 流血(n = 1 ) 在 ICU 由 3 d 列在后面,在 40 d 以后的分泌物;(b) 腐败吃惊(n = 1 ) 由 ICU 和几剖腹术列在后面规划洗室年龄和 necrosectomy,在 74 d 以后的死亡。Gr。II (n = 13;48.1%) :没有抱怨(n = 11 ) ;外部排水(n = 2 ) ;从 13 个盒子的复杂并发症 / 问题:第二分开的假包囊(n = 1 ) 与外部排水(自从与主要内部排水的没有通讯) ;剩余包囊的感染(n = 1 )+ 追随者外部排水;自发的 PPC 穿孔(n = 1 ) 用片断并且随后的胰囊肿胃吻合术的开始的 + 追随者闭合为 2 d 的 ICU。Gr。III (n = 5;18.5%) :在所有病人的没有抱怨,在要求的一般水准二内视镜的过程(变化, 2-6 ) 。结论:胰腺的假包囊的 Interventional 内视镜的管理关于复杂并发症率(11.1%) 和死亡(3.7%) 是有与外科和可接受的结果相比的低侵略海角的一种合理其他的治疗选择,作为由这些证明起始的学习结果。 | Uwe Will Conrad Wegener Kai-Ivo Graf Igor Wanzar Thomas Manger Frank Meyer | 2006 | World Journal of Gastroenterology2006,12,26: | 9 |
| 8 | Influence of groundwater depth on species composition and community structure in the transition zone of Cele oasis显示文摘The paper analyzes the hypothesis that the distribution of dominant plant species and characteristics of plant communities are related to groundwater depth. The results showed that variations of groundwater depth impacted distributions and characteristics of dominant plant communities. However, besides groundwater depth, the community composition and species diversity were also influenced by physiognomy of the habitat. Based on the similarity coefficient, the differences between dominant plant communities were significant at different groundwater depths. Compared with other results relating to desert vegetation and groundwater depth, variations of community distribution were similar at the large spatial scale. However, in this extremely arid region, there were significant differences in community type and community succession when compared with other arid regions, especially in relationship to deep groundwater depth. With groundwater depth from deep to shallow, communities transformed with the sequence of Alhagi communities, Tamarix spp. communities, Populus communities, Phragmites communities, and Sophora communities. At groundwater depth of less than 6.0 m, the community type and composition changed, and the species diversity increased. Among these dominant species, Tamarix exhibited the biggest efficiency in resource utilization according to niche breadth, which means it possessed the best adaptability to environmental conditions at the oasis margins. | Frank M. THOMAS | 2010 | Journal of Arid Land2010,2,4: | 9 |
| 9 | Genome-wide MicroRNA Expression Profiles in COPD: Early Predictors for Cancer Development显示文摘Chronic obstructive pulmonary disease(COPD) significantly increases the risk of developing cancer. Biomarker studies frequently follow a case-control set-up in which patients diagnosed with a disease are compared to controls. Longitudinal cohort studies such as the COPD-centered German COPD and SYstemic consequences-COmorbidities NETwork(COSYCONET) study provide the patient and biomaterial base for discovering predictive molecular markers. We asked whether microRNA(miRNA) profiles in blood collected from COPD patients prior to a tumor diagnosis could support an early diagnosis of tumor development independent of the tumor type. From 2741 participants of COSYCONET diagnosed with COPD, we selected 534 individuals including 33 patients who developed cancer during the follow-up period of 54 months and 501 patients who did not develop cancer, but had similar age, gender and smoking history. Genome-wide miRNA profiles were generated and evaluated using machine learning techniques. For patients developing cancer we identified nine miRNAs with significantly decreased abundance(two-tailed unpaired t-test adjusted for multiple testing P < 0.05), including members of the miR-320 family. The identified mi RNAs regulate different cancer-related pathways including the MAPK pathway(P = 2.3 x 10^(-5)). We also observed the impact of confounding factors on the generated miRNA profiles, underlining the value of our matched analysis. For selected miRNAs, qRT-PCR analysis was applied to validate the results. In conclusion, we identified several miRNAs in blood of COPD patients, which could serve as candidates for biomarkers to help identify COPD patients at risk of developing cancer. | Andreas Keller Tobias Fehlmann Nicole Ludwig Mustafa Kahraman Thomas Laufer Christina Backes Claus Vogelmeier Caroline Diener Frank Biertz Christian Herr Rudolf A. Jorres Hans-Peter Lenhof Eckart Meese Robert Bals | 2018 | Genomics, Proteomics & Bioinformatics2018,16,3: | 9 |
| 10 | 报告随机对照试验的CONSORT声明修订版:说明与详述(三)显示文摘 | Douglas G.Altman Kenneth F.Schulz David Moher Matthias Egger Frank Davidoff Diana Elbourne Peter C.GФtzsch Thomas Lang 刘雪梅 | 2005 | 中国循证医学杂志2005,5,11: | 8 |
| 11 | 报告随机对照试验的CONSORT声明修订版:说明与详述(二)显示文摘 | Douglas G. Altman Kenneth F. Schulz David Moher Matthias Egger Frank Davidoff Diana Elbourne Peter C. Gtzsch Thomas Lang 刘雪梅 | 2005 | 中国循证医学杂志2005,5,10: | 8 |
| 12 | 报告随机对照试验的CONSORT声明修订版:说明与详述(四)显示文摘Douglas G. Altman1, Kenneth F. Schulz2, David Moher3, Matthias Egger4, Frank Davidoff5, Diana Elbourne6, Peter C. Gtzsch7, Thomas Lang8 for the CONSORT | Douglas G. Altman Kenneth F. Schulz David Moher Matthias Egger Frank Davidoff Diana Elbourne Peter C. Gtzsch Thomas Lang 刘雪梅 | 2005 | 中国循证医学杂志2005,5,12: | 7 |
| 13 | 报告随机对照试验的CONSORT声明修订版:说明与详述(六)显示文摘 | Douglas G.Altman Kenneth F.Schulz David Moher Matthias Egger Frank Davidoff Diana Elbourne Peter C.Gφtzsche Thomas Lang 姚巡 | 2006 | 中国循证医学杂志2006,6,2: | 7 |
| 14 | Dielectric metasurfaces for distance measurements and three-dimensional imaging显示文摘Ultrathin metasurfaces have shown the capability to influence all aspects of light propagation.This has made them promising options for replacing conventional bulky imaging optics while adding advantageous optical properties or functionalities.We demonstrate that such metasurfaces can also be applied for single-lens three-dimensional(3-D)imaging based on a specifically engineered point-spread function(PSF).Using Huygens’metasurfaces with high transmission,we design and realize a phase mask that implements a rotating PSF for 3-D imaging.We experimentally characterize the properties of the realized double-helix PSF,finding that it can uniquely encode object distances within a wide range.Furthermore,we experimentally demonstrate wide-field depth retrieval within a 3-D scene,showing the suitability of metasurfaces to realize optics for 3-D imaging,using just a single camera and lens system. | Chunqi Jin Mina Afsharnia RenéBerlich Stefan Fasold Chengjun Zou Dennis Arslan Isabelle Staude Thomas Pertsch Frank Setzpfandt | 2019 | Advanced Photonics2019,1,3: | 7 |
| 15 | Correlation analysis of dual-energy CT iodine maps with quantitative pulmonary perfusion MRI显示文摘AIM:To correlate dual-energy computed tomography(DECT) pulmonary angiography derived iodine maps with parameter maps of quantitative pulmonary perfusion magnetic resonance imaging(MRI).METHODS:Eighteen patients with pulmonary perfusion defects detected on DECT derived iodine maps were included in this prospective study and additionally underwent time-resolved contrast-enhanced pulmonary MRI [dynamic contrast enhanced(DCE)-MRI].DCE-MRI data were quantitatively analyzed using a pixel-by-pixel deconvolution analysis calculating regional pulmonary blood flow(PBF),pulmonary blood volume(PBV) and mean transit time(MTT) in visually normal lung parenchyma and perfusion defects.Perfusion parameterswere correlated to mean attenuation values of normal lung and perfusion defects on DECT iodine maps.Two readers rated the concordance of perfusion defects in a visual analysis using a 5-point Likert-scale(1 = no correlation,5 = excellent correlation).RESULTS:In visually normal pulmonary tissue mean DECT and MRI values were:22.6 ± 8.3 Hounsfield units(HU);PBF:58.8 ± 36.0 mL/100 mL per minute;PBV:16.6 ± 8.5 mL;MTT:17.1 ± 10.3 s.In areas with restricted perfusion mean DECT and MRI values were:4.0 ± 3.9 HU;PBF:10.3 ± 5.5 mL/100 mL per minute,PBV:5 ± 4 mL,MTT:21.6 ± 14.0 s.The differences between visually normal parenchyma and areas of restricted perfusion were statistically significant for PBF,PBV and DECT(P < 0.0001).No linear correlation was found between MRI perfusion parameters and attenuation values of DECT iodine maps(PBF:r = 0.35,P = 0.15;PBV:r = 0.34,P = 0.16;MTT:r = 0.41,P = 0.08).Visual analysis revealed a moderate correlation between perfusion defects on DECT iodine maps and the parameter maps of DCE-MRI(mean score 3.6,k 0.45).CONCLUSION:There is a moderate visual but not statistically significant correlation between DECT iodine maps and perfusion parameter maps of DCE-MRI. | Jan Hansmann Paul Apfaltrer Frank G Zoellner Thomas Henzler Mathias Meyer Gerald Weisser Stefan O Schoenberg Ulrike I Attenberger | 2013 | World Journal of Radiology2013,5,5: | 6 |
| 16 | 报告随机对照试验的CONSORT声明修订版:说明与详述(一)显示文摘 | Douglas G. Altman Kenneth F. Schulz David Moher Matthias Egger Frank Davidoff Diana Elbourne Peter C. Gφtzsch Thomas Lang 刘雪梅 秦莉 林东涛 邓长安 李静 吴泰相 李幼平 | 2006 | 中国实用内科杂志:临床前沿版2006,26,2: | 6 |
| 17 | Camouflage Patterning in Maize Leaves Results from a Defect in Porphobilinogen Deaminase显示文摘玉米叶子从导致沿着叶的长轴穿的同种细胞的房间系的极化的房间部门被生产。我们利用了这个 stereotypical 部门模式识别形成违背同种细胞的房间系的叶绿体色素沉着部门的许多异种。这里,我们描述 camouflage1 (cf1 ) 异种,开发 nonclonal,在它的叶子的 yellowgreen 部门。我们由标注的 transposon 克隆 cf1 基因并且决定它编码 porphobilinogen 脱氨基酶(PBGD ) ,在叶绿素和 heme 早工作的酶生合成。当 PBGD 生物化学地被描绘了时,在这基因的可行变化都没在植物被报导。调查在里面 PBGD 的 vivo 功能,我们描绘了 cf1 异种。组织学的分析表明 cf1 黄扇区显示捆鞘的新奇显型房间特定的死亡。轻移动的实验决定经常的光压制了 cf1 部门形成,黑暗 / 轻的转变被要求仅仅在叶开发的一有限时间期间导致黄部门,和那种部门形式。生物化学的实验决定 cf1 异种叶子减少了 PBGD 活动和在绿、黄的区域的酶底层的增加的层次。而且, cf1 黄区域在过氧化氢酶活动显示了减小。一个阀值模型被假设向 cf1 解释上色并且合并光合的细胞区别,清除的反应的氧种,和 PBGD 功能。 | Mingshu Huanga Thomas L. Slewinski R. Frank Baker , Diane Janick-Buckner Brent Buckner Gurmukh S. Johal David M. Braun | 2009 | Molecular Plant2009,2,4: | 6 |
| 18 | 报告随机对照试验的CONSORT声明修订版:说明与详述(七)显示文摘第18条通过报告所有所做的分析,探讨各种可能影响结果的因素,包括亚组分析和校正分析,并指出哪些分析是既定的,哪些是临时增加的举例 另一个有趣的发现是,是否使用维生素A治疗与随之表现出的疾病严重程度有一定联系。使用维生素A治疗的住院患者的转归较未使用维生素A的门诊患者稍好。虽然该结果来自研究方案既定的亚组分析,但两组差异无统计学意义(α=0.05) | Douglas G.Altman Kenneth F.Schulz David Moher Matthias Egger Frank Davidoff Diana Elbourne Peter C.Gotzsche Thomas Lang 孙丁 | 2006 | 中国循证医学杂志2006,6,3: | 5 |
| 19 | Early combined immunosuppression or conventional management in patients with newly diagnosed Crohn’s disease: an open randomised trial显示文摘 | Geert D’Haens Filip Baert Gert van Assche Philip Caenepeel Philippe Vergauwe Hans Tuynman Martine De Vos Sander van Deventer Larry Stitt Allan Donner Severine Vermeire Frank J Van De Mierop Jean-Charles R Coche Janneke van der Woude Thomas Ochsenkühn Ad A | 2008 | The Lancet2008,,9613: | 5 |
| 20 | Sensory reinnervation of free flaps in reconstruction of the breast and the upper and lower extremities显示文摘There is long-standing debate about sensate versus non-sensate free microvascular flaps among microsurgeons. The principle of connecting not only the vascular supply, but also sensitive nerves, in free tissue transfer is attractive. However, increased operating time and partial spontaneous innervation led to the common decision to restrict microsurgical tissue transfer to the vascular anastomosis and to leave the nerves 'untreated'. Nevertheless, in special cases such as breast reconstruction or extremity reconstruction, the question about sensory nerve coaptation of the flaps remains open. We present our experience with free microvascular tissue transfer for breast and extremity reconstruction and compare the data with previous literature and conclude that most free flap surgeries do not benefit from nerve coaptation. | Nektarios Sinis Androniki Lamia Helml Gudrun Thomas Schoeller Frank Werdin | 2012 | Neural Regeneration Research2012,7,29: | 4 |