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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 | 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 |
| 4 | Diagnostic accuracy of tests for Helicobacter pylori in an Alaska Native population显示文摘AIM:To evaluate the accuracy of two non-invasivetests in a population of Alaska Native persons. Highrates of Helico bacter pylori(H. pylori) infection,H. pylori treatment failure,and gastric cancer in this population necessitate documentation of infection status atmultiple time points over a patient's life.METHODS:In 280 patients undergoing endoscopy,H. pylori was diagnosed by culture,histology,rapidurease test,13C urea breath test(UBT) ,and immuno-globulin G antibodies to H. pylori in serum. The performances of 13C-UBT and antibody test were compared to a gold standard defined by a positive H. pylori testby culture or,in case of a negative culture result,bypositive histology and a positive rapid urease test.RESULTS:The sensitivity and specificity of the 13C-UBT were 93% and 88%,respectively,relative to thegold standard. The antibody test had an equivalents ensitivity of 93% with a reduced specificity of 68%.The false positive results for the antibody test were as-sociated with previous treatment for an H. pylori infection [relative risk(RR) = 2.8]. High levels of antibodiesto H. pylori were associated with chronic gastritis and male gender,while high scores in the 13C-UBT testwere associated with older age and with the H. pyloribacteria load on histological examination(RR = 4.4) .CONCLUSION:The 13C-UBT out performed the anti-body test for H. pylori and could be used when a non-invasive test is clinically necessary to document treatment out come or when monitoring for reinfection. | Dana L Bruden Michael G Bruce Karen M Miernyk Julie Morris Debby Hurlburt Thomas W Hennessy Helen Peters Frank Sacco Alan J Parkinson Brian J McMahon | 2011 | World Journal of Gastroenterology2011，17，42： | 3 |
| 5 | Genetic transformation of major wine grape cultivars of Vitis vinifera L显示文摘 | Iocco P Franks T Thomas M R | | 0，，： | 1 |
| 6 | Chimerism in grapevines:implications for eultivar identity,ancestry and genetic improvement显示文摘 | Franks T Botta R Thomas M R | 2002 | Theor Appl Genet2002，104，： | 1 |
| 7 | Chimerism in grapevines: implications for cultivar identity, ancestry and genetic improvement 显示文摘 | FRANKS T BOTTA R THOMAS M R | 2002 | Theoretical and Applied Genetics2002，104，： | 1 |
| 8 | The CXCL1 rs4074 A allele is associated with enhanced CXCL1 responses to TLR2 ligands and predisposes to cirrhosis in HCV genotype 1-infected Caucasian patients显示文摘 | Hans Dieter Nischalke Cordula Berger Carolin Luda Tobias Müller Thomas Berg Martin Coenen Benjamin Kr?mer Christian K?rner Jonel Trebicka Frank Grünhage Frank Lammert Jacob Nattermann Tilman Sauerbruch Ulrich Spengler | 2011 | Journal of Hepatology2011，，4： | 1 |
| 9 | Response of tree phenology to climate change across Europe显示文摘 | Frank M Chmielewski Thomas R | 2001 | Agricultural and Forest Meteorology2001，108，2： | 1 |
| 10 | Transgenic grapevines status and future显示文摘 | THOMAS M R LOCCO P FRANKS T | 2000 | Acta Hort2000，528，： | 1 |
| 11 | A review of calibration techniques for freehand 3D ultrasound systems显示文摘 | Laurence M Thomas L Frank L | 2005 | Ultrasound in Medicine & Biology2005，31，5： | 1 |
| 12 | Experimental Lung Transplantation: Impact of Preservation Solution and Route of Delivery显示文摘 | Thorsten Wittwer Ulrich F.W. Franke Antonia Fehrenbach Matthias Ochs Tim Sandhaus Alex Schuette Stefan Richter Niels Dreyer Lars Knudsen Thomas Müller Harald Schubert Joachim Richter Thorsten Wahlers | 2005 | Journal of Heart and Lung Transplantation2005，，8： | 1 |
| 13 | Current concepts in multi-detector row CT evaluation of the coronary arteries: principles, techniques, and anatomy 显示文摘 | Harpreet K Thomas G Frank M | 2003 | Radiographics2003，23，4： | 1 |
| 14 | Current concepts in multi detector row CT evaluation of the coronary arteries:principles,techniques,and anatomy显示文摘 | Harpreet K Thomas G Frank M Rich PM Blank L | 2003 | Radiographics2003，23，10： | 1 |
| 15 | UWB signal propagation at the human head 显示文摘 | Thomas Z Gabriel M Frank A | 2006 | IEEE Trans Micro- wave Theory Tech2006，54，4： | 1 |
| 16 | Clinical report--probiotics and prebiotics in pediatrics 显示文摘 | DAN W THOMAS M D FRANK R | 2010 | Pediatrics2010，126，10： | 1 |
| 17 | Clones or no clones:genetic structure of riparian Populus euphratica forests in Central Asia显示文摘Many riparian(Tugai) forests growing along rivers in arid and hyper-arid regions of Central Asia are dominated by the Euphrates poplar(Populus euphratica). Besides generative reproduction, which is only possible upon flooding events and at a distance to the groundwater of less than 2 m, this phreatophytic tree species also reproduces vegetatively by forming clones that can cover land surface areas of several hectares. Along a gradient of groundwater distances, we investigated whether the fraction of clones in P. euphratica stands(1) increases with increasing distance to the water table;(2) is higher if supplied with water via river cut-offs; and(3) approaches 100% at a short distance to the groundwater, but at high salt concentrations in the upper soil layers, which would prevent germination and establishment of seedlings. AFLP(Amplified Fragment Length Polymorphism) analyses were conducted on leaf samples taken from mature P. euphratica trees growing at the fringes of the Taklimakan Desert in stands with different distances(2–12 m) to the groundwater at two plots at the middle and the lower reaches of the Tarim River and in a stand close to Ebinur Lake, Xinjiang, China. Genetic diversity was large among plots, but considerably smaller within plots. We found the highest genetic diversity(caused by regeneration from seeds) at plots that have a short distance to the groundwater or are supplied with additional water. There was no significant relationship between groundwater distance and clonal fraction. All investigated trees at the saline Ebinur Lake site belonged to one single clone. Our results demonstrate that the genetic pattern of this widespread species is not easily predictable even over small distances as it is a result of a complex interplay of stand history and dispersal of propagules(pollen, seeds, and vegetative diaspores) by wind and water. In conservation and restoration schemes, P. euphratica stands with a high genetic diversity and stands that grow at short distances to the water table and are regularly subjected to flooding(which favors generative over clonal reproduction) should be prioritized. | Katja KRAMP Thomas SCHMITT Petra LANG Michael JESCHKE Philipp SCHAFERI Dustin KULANEK ZHANG Ximing YU Ruide Frank M THOMAS | 2018 | Journal of Arid Land2018，10，5： | 1 |
| 18 | Response of tree phenology to climate change across europe显示文摘 | Frank M Chmielewski Thomas R | 2001 | Agricultural and Forest Meteorology2001，108，2： | 1 |
| 19 | Response of tree phenology to climate change across Europe显示文摘 | FRANK M CHMIELEWSKI THOMAS R | 2001 | Agricultural and Forest Meteorology2001，108，2： | 1 |
| 20 | Current concepts in multidetector row CT evalution of the coronary arteries Principles techniques and anatomy显示文摘 | Harpreet K Thomas G Frank M | 2003 | Radiographices2003，23，： | 1 |
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