维普中文期刊产品整合服务
337篇 您的检索式:作者名="YOHANNES"
    题名 作者 年代 出处 被引量
1可变流量NCPAP加氨茶碱治疗早产儿呼吸衰竭临床观察显示文摘目的探讨可变流量经鼻持续气道正压通气(VF-NCPAP)加氨茶碱治疗早产儿呼吸衰竭的疗效。方法将NICU收治的57例呼吸衰竭,早产儿分为:治疗组(VF-NCPAP加氨茶碱静注)23例、对照组A(传统NCPAP加氨茶碱静注)18例和对照组B(单用VF-NCPAP)16例。各自进行相应治疗,比较治疗后72 h内不同时间段呼吸参数改变及临床疗效。结果治疗8 h后,治疗组PaO2较对照组B上升明显,有显著的差异性(P<0.01);治疗组PaCO2较对照组A和对照组B下降明显,治疗组OI(PaO2/FiO2)较对照组B上升明显,均有显著的差异性(P<0.05)。治疗24 h后,治疗组PaO2较对照组A上升明显,有显著的差异性(P<0.05)。治疗48 h后,治疗组FiO2较对照组A和对照组B下降明显,有显著的差异性(P<0.05);治疗组OI较对照组A上升明显,有显著的差异性(P<0.01)。结论VF-NCPAP加氨茶碱治疗早产儿呼吸衰竭有较好的疗效,优于传统的NCPAP加氨茶碱或单用VF-NCPAP。金志鹏 王群思 Tweoldemdhin Yohannes 2005小儿急救医学2005,12,6:7
2Modified panel data regression model and its applications to the airline industry: Modeling the load factor of Europe North and Europe Mid Atlantic flights显示文摘This article conducts a stochastic analysis on the passenger load factor of the airline industry.Used to measure competence and performance of the airline,load factor is the percentage of seats filled by revenue passengers.It is considered a complex metric in the airline industry.Thus,it is affected by several dynamic factors.This paper applies advanced stochastic models to obtain the best fitted trend of load factor for Europe's North Atlantic(NA)and Mid Atlantic(MA)flights in the Association of European Airlines.The stochastic model's fit helps to forecast the load factor of flights within these geographical regions and evaluate the airline's demand and capacity management.The paper applies spectral density estimation and dynamic time effects panel data regression models on the monthly load factor flights of NA and MA from 1991 to 2013.The results show that the load factor has both periodic and serial correlations.Consequently,the author acknowledges that the use of an ordinal panel data model is inappropriate for a realistic econometric model of load factor.Therefore,to control the periodic correlation structure,the author modified the existing model was modified by introducing dynamic time effects.Moreover,to eradicate serial correlation,the author applied the Prais-Winsten methodology was applied to fit the model.In this econometric analysis,the study finds that AEA airlines have greater demand and capacity management for both NA and MA flights.In conclusion,this study prosperous in finding an effective and efficient dynamic time effects panel data regression model fit,which empowers engineers to forecast the load factor off AEA airlines.Yohannes Yebabe Tesfay 2016Journal of Traffic and Transportation Engineering(English Edition)2016,3,4:4
3Validation of agricultural non-point source (AGNPS) pollution model in Kori watershed, South Wollo, Ethiopia显示文摘Hassen Mohammed Fekadu Yohannes Gete Zeleke 2004International Journal of Applied Earth Observations and Geoinformation2004,,2:2
4Testing and evaluation of the agricultural non-point source pollution model (AGNPS) on Augucho catchment, western Hararghe, Ethiopia显示文摘Nigussie Haregeweyn Fekadu Yohannes 2002Agriculture, Ecosystems and Environment2002,,1:2
5Nanoscopy reveals surface-metallic black phosphorus显示文摘Black phosphorus(BP)is an emerging two-dimensional material with intriguing physical properties.It is highly anisotropic and highly tunable by means of both the number of monolayers and surface doping.Here,we experimentally investigate and theoretically interpret the near-field properties of a-few-atomic-monolayer nanoflakes of BP.We discover near-field patterns of bright outside fringes and a high surface polarizability of nanofilm BP consistent with its surface-metallic,plasmonic behavior at mid-infrared frequencies o1176 cm−1.We conclude that these fringes are caused by the formation of a highly polarizable layer at the BP surface.This layer has a thickness of~1 nm and exhibits plasmonic behavior.We estimate that it contains free carriers in a concentration of n≈1.1×10^(20) cm^(−3).Surface plasmonic behavior is observed for 10–40 nm BP thicknesses but absent for a 4-nm BP thickness.This discovery opens up a new field of research and potential applications in nanoelectronics,plasmonics and optoelectronics.Yohannes Abate Sampath Gamage Zhen Li Viktoriia Babicheva Mohammad H Javani Han Wang Stephen B Cronin Mark I Stockman 2016Light(Science & Applications)2016,5,1:2
6Species-specific allometric equations for improving aboveground biomass estimates of dry deciduous woodland ecosystems显示文摘Allometric equations are important for quantifying biomass and carbon storage in terrestrial forest ecosystems.However,equations for dry deciduous woodland ecosystems,an important carbon sink in the lowland areas of Ethiopia have not as yet been developed.This study attempts to develop and evaluate species-specific allometric equations for predicting aboveground biomass(AGB)of dominant woody species based on data from destructive sampling for Combretum collinum,Combretum molle,Combretum harotomannianum,Terminalia laxiflora and mixed-species.Diameter at breast height ranged from 5 to 30 cm.Two empirical equations were developed using DBH(Eq.1)and height(Eq.2).Equation 2 gave better AGB estimations than Eq.1.The inclusion of both DBH and H were the best estimate biometric variables for AGB.Further,the equations were evaluated and compared with common generic allometric equations.The result showed that our allometric equations are appropriate for estimating AGB.The development and application of empirical species-specific allometric equations is crucial to improve biomass and carbon stock estimation for dry woodland ecosystems.Amsalu Abich Tadesse Mucheye Mequanent Tebikew Yohanns Gebremariam Asmamaw Alemu 2019Journal of Forestry Research2019,30,5:2
7Effect of drip and furrow irrigation and plant spacing on yield of tomato at Dire Dawa, Ethiopia显示文摘Fekadu Yohannes Teshome Tadesse 1998Agricultural Water Management1998,,3:2
8Discovery and development of α7 nicotinic acetyl- choline receptor modulators 显示文摘MAZUROV A A SPEAKE J D YOHANNES D 2011J Med Chem2011,54,23:1
9Calcineurin controls growth,morphology,and pathogenicity in Aspergillus fumigatus显示文摘William J S Robert A C Yohannes G A 2006Eukaryotic Cell2006,5,7:1
10Predictors of drop-out from an outpatient cardiac rehabilitation programme显示文摘Yohannes A M Yalfani A Doherty P 0,,03:1
11Management of Malignant Extrinsic Compression of the Ureter by Simultaneous Placement of Two Ipsilateral Ureteral Stents显示文摘Rotariu P Yohannes P Alexianu M 0,,10:1
12Proteomics Analysis Identifies Molecular Targets Related to Diabetes Mellitus- associated Bladder Dysfunction显示文摘Elizabeth Yohannes Jinsook Chang George J Christ 2008Molecular & Cellular Proteomics2008,7,:1
13Depression and anxiety in chronic heart failure and chronic obstructive pulmonary disease:prevalence,relevance,clinical implications and management principles显示文摘Yohannes AM Willgoss TG Baldwin RC 0,,:1
14Polytluorene copolymer based bulk heterojunction solar cells 显示文摘YOHANNES T ZHANG Feng-ling SVENSSON M 2004Thin Solid Films2004,449,1:1
15Inorganic-organic hybrid materials: synthesis and crystal structures of the layered solids (M=Co, Ni) 显示文摘Khan M I Yohannes E Ayesh S 2003J Mol Struct2003,656,:1
16Management of malignant extrinsic compression of the ureter by simultaneousplacement of two ipsilateral ureteral stents 显示文摘Rotariu P Yohannes P Alexianu M 2001J Endourol2001,15,10:1
17Mechanisms of auxind ependent cell and tissue polarity显示文摘YOHANN BOUTT(E) YOSHIHISA IKEDA 2007Current Opinion in Plant Biology2007,,10:1
18Does laparoscopic ureterolithotomy replace shock-waveithotripsy or ureteroscopy for ureteral stones显示文摘ROFEIM O YOHANNES P BADLANI GH 2001Endourol2001,15,3:1
19Quality of life in elderly patients with COPD: Measurement and predictive factors 显示文摘Yohannes AM Roomi J Waters K 1998Respir Med1998,92,10:1
20Evolving practices in the manage-ment of acute kidney injury in the ICU (Intensive Care Uni0显示文摘YOHANNES S CHAWLA IS 2009Clin Nephrol2009,71,6:1
返回顶部 每页显示:
共17页 首页 上一页 第1页 下一页 末页 /17 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