|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | 新疆膜下滴灌棉田暗管排盐的数值模拟与分析Ⅰ:模型与参数验证显示文摘新疆地区广泛应用膜下滴灌技术进行棉花种植,易在膜下浅层根区(0~40 cm)形成淡化区域,而深部根系层(40~60 cm)却始终处于积盐状态,具有较大的积盐和返盐隐患。为了更为便捷地探索节水、高效的暗管排盐模式,在开展蓄水淋洗条件下暗管(埋深60 cm、间距500 cm)排水、排盐田间试验和分析建立相应数值模型的基础上,利用HYDRUS软件和田间试验数据对所建立的数值模型和水盐运动参数进行了校验,结果表明模拟值与实测值之间整体吻合较好,剖面土壤含水量分布的最大均方根差(RMSE)和最小决定系数(R2)分别为0.025 cm^3/cm^3和0.88,含盐量分布的最大RMSE和最小R2分别为2.74 g/kg和0.93,基本在可接受范围之内。尽管剖面土壤脱盐率可达77.5%,但绝大部分盐分都被淋洗至暗管以下土层,暗管排盐量十分有限,仅占60 cm以上土体盐分总量的11.7%,因此有必要探索膜下滴灌棉田暗管排盐的改进模式或方法,以有效提高其排盐效率。本文所建立的数值模型和相关水盐运动参数可以较好地描述暗管排水、排盐过程中的土壤水盐动态,并进一步用于当地膜下滴灌棉田不同暗管排盐模式的数值模拟与分析,从而为新疆膜下滴灌棉田高效排盐模式的探索提供科学依据。 | 李显溦 左强 石建初 BENGAL Alon 王数 | 2016 | 水利学报2016，47，4： | 43 |
| 2 | 新疆膜下滴灌棉田暗管排盐的数值模拟与分析Ⅱ:模型应用显示文摘为了降低新疆地区盐碱棉田根区土壤盐分含量,尤其是排走长期使用膜下滴灌技术造成的下部根系层(40~60 cm)累积盐分,针对当地实际情况设计了2种改进排盐模式,分别是淋洗防渗排盐模式(情景1)和暗管局部冲洗排盐模式(情景2),利用经过校验的模型和参数对不同模式下暗管排水、排盐动态过程进行模拟。情景1在暗管下方铺设一定宽度(L_f,分别设定为20、50、100、250和500 cm)的防渗材料以增加汇流面积,提高排水、排盐量;情景2先通过暗管直接供水湿润周围土壤,达到设定时间(T_i,分别设定为0.25~10 d的9种情形)后停止供水,然后再通过暗管进行排水、排盐,以期利用较小的冲洗定额达到排盐的目的。对情景1进行模拟时,以0~40 cm和40~60 cm土壤含盐量分别低于3 g/kg和6 g/kg作为结束淋洗的标准进行对比分析,结果表明:当暗管处于非饱和区域、下方无防渗处理(传统暗管排盐模式)时,其排盐率仅为9.8%,单方水的排盐效率约1.86 kg/m^3;在暗管下方进行防渗处理有利于增加暗管排盐量,排盐率可达11.9%~32.1%,排盐效率可提高至2.27~3.15 kg/m^3;然而,随着Lf增加,施工难度和成本均会大幅上升,尤其是当Lf>100 cm,单方水排盐效率的提高程度却较为有限,因此建议Lf在100 cm以内。而采用暗管供水进行局部冲洗(情景2)时,即使在暗管下方进行防渗处理,其单方水的排盐效率最高也不超过0.6 kg/m^3,整体表现并不理想,在新疆地区使用不太现实。 | 李显溦 左强 石建初 BENGAL Alon 王数 | 2016 | 水利学报2016，47，5： | 25 |
| 3 | 计算机导航下颌无牙颌不翻瓣种植手术和即刻负重显示文摘当今,尽量减少种植手术中的创伤已经成为了一条金标准,于是计算机导航手术技术开始逐渐兴起。尽管不翻瓣的种植手术有很多临床上的优势,但是由于不是在直视下操作,不翻瓣手术仅局限于一些简单的没有皮质骨板穿通危险的病例。本文结合下颌无牙颌病例,阐述了在计算机导航下采用的不翻瓣种植手术的治疗方案。同时介绍了图像引导种植系统(IGI,DenX Advanced Dental System)。IGI系统可以实时地显示钻针的图像,使得整个不翻瓣种植手术的过程都在监控之下。有术中准确的导航系统的保证,可以精确的实施术前制定的治疗计划,这对于牙弓缺乏参照标志的无牙颌来讲尤其具有价值。根据术前数字化治疗计划.种植体植入的位置可以十分精确,因此可以在术前制作固定的临时修复体并进行即刻负重。这种全新的手术方法使得在完全监控下行不翻瓣种植手术成为了可能,同时减小了种植修复的难度。 | Nardy Casap Eyal Tarazi Alon Wexler Uri Sonnenfeld Joshua Lustmann 朱一博(译) 林野(校) | 2005 | 中国口腔医学继续教育杂志2005，8，4： | 12 |
| 4 | The association between orthostatic hypertension and all-cause mortality in hospitalized elderly persons显示文摘BackgroundLittle 在长期的死亡上对 orthostatic 高血压(OHT ) 和它的效果的流行被知道在老。我们评估了 OHT 的流行,它在 1852 个病人的就医的老 patients.MethodsOut 的死亡上的效果在 31/12/1999 和 31/12/2000 之间承认了到一个尖锐衰老老人病房,有一个平均数的 474 个病人(48% 男性) 81.5 ± 变老;6.8 年在这研究被注册。血压(BP ) 在一个仰卧、站的位置在日子期间被测量三次。有在站之上的收缩或心脏舒张的 BP 层次的至少一增加的病人与 OHT 被诊断。病历,物理考试和实验室参数从医药记录被检索。死亡数据直到 18 th 2014 年 6 月从 Interior.ResultsFour 的部的计算机化的系统被检索 107 个病人(86%) 与 OHT 被诊断。没有 OHT,那些有一个更低的身体团索引并且是更可能的男性,吸烟者,与 OHT 与那些相比有 Parkinsons 疾病和更少的充血的心失败的更高的率。有 OHT 的病人让更好的幸存没有 OHT,比那些评价(P = 0.024 ) 。为有 OHT 的在那些的死亡的危险比率(HR ) 适应了年龄,多重风险因素是:0.67 [95% 信心间隔(CI ) :0.51 − 0.87 ] 并且 0.73 (95% CI:0.55 − 0.97 ) 分别地;一个类似的趋势被有 OHT 的老病人有的 gender.ConclusionHospitalized 在敏感分析注意更好的幸存率比那些没有 OHT。 | Avraham Weiss Yichayaou Beloosesky Alon Grossman Agata Shlesinge Nira Koren-Morag Ehud Grossman | 2016 | Journal of Geriatric Cardiology2016，13，3： | 10 |
| 5 | Synthetic aperture-based on-chip microscopy显示文摘Wide field-of-view(FOV)and high-resolution imaging requires microscopy modalities to have large space-bandwidth products.Lensfree on-chip microscopy decouples resolution from FOV and can achieve a space-bandwidth product greater than one billion under unit magnification using state-of-the-art opto-electronic sensor chips and pixel super-resolution techniques.However,using vertical illumination,the effective numerical aperture(NA)that can be achieved with an on-chip microscope is limited by a poor signal-to-noise ratio(SNR)at high spatial frequencies and imaging artifacts that arise as a result of the relatively narrow acceptance angles of the sensor’s pixels.Here,we report,for the first time,a synthetic aperture-based on-chip microscope in which the illumination angle is scanned across the surface of a dome to increase the effective NA of the reconstructed lensfree image to 1.4,achieving e.g.,,250-nm resolution at 700-nm wavelength under unit magnification.This synthetic aperture approach not only represents the largest NA achieved to date using an on-chip microscope but also enables color imaging of connected tissue samples,such as pathology slides,by achieving robust phase recovery without the need for multi-height scanning or any prior information about the sample.To validate the effectiveness of this synthetic aperture-based,partially coherent,holographic on-chip microscope,we have successfully imaged color-stained cancer tissue slides as well as unstained Papanicolaou smears across a very large FOV of 20.5 mm^(2).This compact on-chip microscope based on a synthetic aperture approach could be useful for various applications in medicine,physical sciences and engineering that demand high-resolution wide-field imaging. | Wei Luo Alon Greenbaum Yibo Zhang Aydogan Ozcan | 2015 | Light(Science & Applications)2015，4，1： | 4 |
| 6 | Research progress on solid-fueled Scramjet显示文摘The solid-fueled Scramjet is an interesting option for supersonic combustion ramjet.It shows significant advantages such as simple fuel supply and compactness,avoiding the complex system of tanks and pipelines that encountered in liquid-fueled Scramjets.The solid-fueled Scramjet could be the simplest air-breathing engine for the hypersonic flight regime.This paper presents a comprehensive and systematic review of the research progress on solid-fueled Scramjet in various institutes and universities.It summarizes a progress overview of three types of the solid-fueled Scramjet,which covers a wealth of landmark numerical and experimental results.Based on this,several relevant key technologies are proposed.Several inherent scientific issues are refined,such as the mixing mechanism of multi-phase flow and supersonic airflow,ignition and combustion mechanism of the condensed phase in a supersonic airflow,and coupling mechanism of gas and solid phase in a supersonic flow.Finally,the historical development trend is clarified,and some recommendations are provided for future solid-fueled Scramjet. | Xiang ZHAO Zhixun XIA Likun MA Chaolong LI Chuanbo FANG Benveniste NATAN Alon GANY | 2022 | Chinese Journal of Aeronautics2022，35，1： | 4 |
| 7 | Stability management of high speed axial flow compressor stage through axial extensions of bend skewed casing treatment显示文摘This paper presents the experimental results to understand the performance of moderately loaded high speed single stage transonic axial flow compressor subjected to various configurations of axial extensions of bend skewed casing treatment with moderate porosity.The bend skewed casing treatment of 33%porosity was coupled with rectangular plenum chamber of depth equal to the slots depth.The five axial extensions of 20%,40%,60%,80%and 100%were used for the experimental evaluations of compressor performance.The main objective was to identify the optimum extension of the casing treatment with reference to rotor leading edge which results in maximum stall margin improvements with minimum loss in the stage efficiency.At each axial extension the compressor performance is distinctive.The improvement in the stall margin was very significant at some axial extensions with 4%–5%penalty in the stage efficiency.The compressors stage shows recovery in terms of efficiency at lower axial extensions of 20%and 40%with increase in the peak stage efficiency.Measurements of flow parameters showed the typical behaviors at near stall flow conditions.Hot wire sensor was placed at the rotor upstream in the tip region to capture the oscillations in the inlet axial and tangential velocities at stall conditions.In the absence of casing treatment the compressor exhibit abrupt stall with very high oscillations in the inlet axial and tangential velocity of the flow.The extents of oscillations reduce with bend skewed casing treatment.Few measurements were also performed in the plenum chamber and salient results are presented in this paper. | Dilipkumar Bhanudasji Alone S.Satish Kumar Shobhavathy M.Thimmaiah Janaki Rami Reddy Mudipalli A.M.Pradeep Srinivasan Ramamurthy Venkat S.Iyengara | 2016 | Propulsion and Power Research2016，5，3： | 3 |
| 8 | Numerical estimation of choice of the regularization parameter for NMR T2 inversion显示文摘Nuclear Magnetic Resonance(NMR) T_2inversion is the basis of NMR logging interpretation.The regularization parameter selection of the penalty term directly influences the NMR T_2 inversion result.We implemented both norm smoothing and curvature smoothing methods for NMR T_2 inversion,and compared the inversion results with respect to the optimal regularization parameters(α_(opt)) which were selected by the discrepancy principle(DP),generalized cross-validation(GCV).S-curve,L-curve.and the slope of L-curve methods,respectively.The numerical results indicate that the DP method can lead to an oscillating or oversmoothed solution which is caused by an inaccurately estimated noise level.The α_(opt) selected by the L-curve method is occasionally small or large which causes an undersmoothed or oversmoothed T_2 distribution.The inversion results from GCV,S-curve and the slope of L-curve methods show satisfying inversion results.The slope of the L-curve method with less computation is more suitable for NMR T_2inversion.The inverted T_2 distribution from norm smoothing is better than that from curvature smoothing when the noise level is high. | You-Long Zou Ran-Hong Xie Alon Arad | 2016 | Petroleum Science2016，13，2： | 2 |
| 9 | 何种要求是为权利?——权利与理由关系的探究显示文摘一、导论言论自由经常与保护国家安全相冲突,前者传统上被划归为是一项个人权利,后者则是一项并非立基于权利(right-based)之上的重要关切(concern)。同样,正当程序、宗教自由以及平等保护被划归为个人权利,不受犯罪的侵害、公共秩序的维持、经济繁荣以及家庭价值的增进被划归为并非立基于权利之上的关切。[1]更为一般地说,有些要求(demands)被划归为权利,而其他有价值的要求却并未被划归为权利。 | Alon Harel 瞿郑龙(译) 张梦婉(译) | 2013 | 法理学论丛2013，，1： | 2 |
| 10 | VEGF acts as a survival facter for newly formed retinal vessels and implications for retinophathy of prematurity显示文摘 | Alon T Hemo I Itin A | 1995 | Nat Med1995，1，： | 2 |
| 11 | Technique and Outcomes of Robot-assisted Retroperitoneoscopic Partial Nephrectomy: A Multicenter Study显示文摘 | Jim C. Hu Eric Treat Christopher P. Filson Ian McLaren Siwei Xiong Sevan Stepanian Khaled S. Hafez Alon Z. Weizer James Porter | 2014 | European Urology2014，，： | 2 |
| 12 | Payout policy in the 21st century显示文摘 | Alon Brav John R. Graham Campbell R. Harvey Roni Michaely | 2005 | Journal of Financial Economics2005，，3： | 2 |
| 13 | Induction of neuronal and myelin-related gene expression by IL-6-receptor/IL-6: A study on embryonic dorsal root ganglia cells and isolated Schwann cells显示文摘 | Pei-Lin Zhang Alon M. Levy Levana Ben-Simchon Shalom Haggiag Judith Chebath Michel Revel | 2007 | Experimental Neurology2007，，2： | 2 |
| 14 | Activist arbitrage: A study of open-ending attempts of closed-end funds显示文摘 | Michael Bradley Alon Brav Itay Goldstein Wei Jiang | 2009 | Journal of Financial Economics2009，，1： | 2 |
| 15 | Intensification of Statin Therapy Results in a Rapid Reduction in Atherosclerotic Inflammation: Results of A Multi-Center FDG-PET/CT Feasibility Study显示文摘 | Ahmed Tawakol Zahi A. Fayad Robin Mogg Achilles Alon Michael T. Klimas Hayes Dansky Sharath S. Subramanian Amr Abdelbaky James H.F. Rudd Michael E. Farkouh Irene O. Nunes Chan R. Beals Sudha S. Shankar | 2013 | Journal of the American College of Cardiology2013，，： | 2 |
| 16 | Relationship between homocysteine and coronary artery disease. Results from a large prospective cohort study显示文摘 | Alon Schaffer Monica Verdoia Ettore Cassetti Paolo Marino Harry Suryapranata Giuseppe De Luca | 2014 | Thrombosis Research2014，，： | 2 |
| 17 | Functional Defecation Disorders in Children: Comparing the Rome II with the Rome III Criteria显示文摘 | Rosa Burgers Alon D. Levin Carlo Di Lorenzo Marcel G.W. Dijkgraaf Marc A. Benninga | 2012 | The Journal of Pediatrics2012，，4： | 2 |
| 18 | Payout policy in the 21st century显示文摘 | Alon Brav John R. Graham Campbell R. Harvey Roni Michaely | 2005 | Journal of Financial Economics2005，，3： | 2 |
| 19 | A stranger in a strange land: Micro political risk and the multinational firm显示文摘 | Ilan Alon Theodore T. Herbert | 2008 | Business Horizons2008，，2： | 2 |
| 20 | Broad patterns of gene expression revealed by clustering analysis of tumor and normal colon tissues probed by oligonucleotide arrays 显示文摘 | Barkai N Notterman DA | 1999 | Proc Natl Acad Sci U S A1999，96，12： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员