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Communications in Theoretical physics 2015年第1期63卷 91-100页

作者： Soufiene Bettaibi Ezeddine Sediki Frdric Kuznik Sauro Succi UR: Rayonnement Thermique Facult des Sciences de Tunis Universit de Tunis El Manar 2092 Tunis Tunisia INSA-Lyon CETHIL F-69621 Villeurbanne France Universit de Lyon CNRS UMR5008 F-69622 Villeurbanne France Research director IAC-CNR Rome Via dei Taurini 19 00185 Roma

The goal of this article is to study numerically the mixed convection in a differentially heated rid-driven cavity with non-uniform heating of the bottom wall. The velocity field is solved by a hybrid scheme with multiple relaxation time Lattice Boltzmann （MRT-LBM） model, while the temperature field is obtained by resolution of the energy balance equation using the finite difference method （FdM）. First, the model is checked and validated using data from the riterature. Validation of the present resuJts with those available in the literature shows a good agreement. A good efficiency in time simulation is confirmed. Thereafter, the model has been applied to mixed convection in a driven cavity with non-uniform heating wall at the fixed Grashof number Gr = 106. It is found that, the heat transfer is weakened as the Richardson number is augmented. For Gr = 106, we note the appearance of secondary vortices at different positions of the cavity corners.

关键词： lattice Boltzmann method (LBM) finite difference method (FdM) heated Lid-driven cavity mixed convection non-uniform heating wall

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A quantitative understanding of lac repressor＇s binding specificity and flexibility

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Frontiers of Electrical and Electronic Engineering in China 2015年第2期10卷 69-80页

作者： Zheng Zuo Yiming Chang Gary d. Stormo department of Genetics and Center for Genomic Sciences and Systems Biology School of Medicine Washington University St.Louis MO 63108 USA

Lac repressor, the first discovered transcriptional regulator, has been shown to confer multiple modes of binding to its operator sites depending on the central spacer length. Other homolog members in the LacI/GalR family （purr and YcjW） cannot bind their operator sites with similar structural flexibility. To decipher the underlying mechanism for this unique property, we used Spec-seq approach combined with site-directed mutagenesis to quantify the dNA binding specificity of multiple hybrids of lacI and purR. We find that lac repressor＇s recognition di-residues YQ and its hinge helix loop regions are both critical for its structural flexibility. Also, specificity profiling of the whole lac operator suggests that a simple additive model from single variants suffice to predict other multivariant sites＇ energy reasonably well, and the genome occupancy model based on this specificity data correlates well with in vivo iac.repressor binding profile.

关键词： lac repressor binding flexibility Spec-seq ionic strength

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用于跟踪机动目标的交互式加速度补偿算法

指挥控制与仿真 1996年第4期 21-29页

作者： G·A·瓦特森 ,W·d·布莱亚 ,陈爱元

两级卡尔曼估计器研究针对在有随机偏差的情况下的状态估计,通过把目标加速度视为一偏差向量,用于对机动目标的跟踪。此时,目标加速度作为一个偏差,第一级估计器包含了一个常速机动模型,由其估计出目标位置和速度,而第二级估计器则估计... 详细信息

两级卡尔曼估计器研究针对在有随机偏差的情况下的状态估计,通过把目标加速度视为一偏差向量,用于对机动目标的跟踪。此时,目标加速度作为一个偏差,第一级估计器包含了一个常速机动模型,由其估计出目标位置和速度,而第二级估计器则估计目标加速度。当目标机动被检测出时,则该加速度估计用于修正第一级估计器中的估计。本文介绍的交互式加速度补偿算法(iac.能克服对两级估计器明显机动检测的要求。此iac.法被视为是一个具有两个加速度模型的两级估计器:零加速度的等速度模型和等加速度模型。交互式多模型算法(IMM)用于计算加速度估值,以补偿等速滤波器的估值。仿真结果表明,iac.法的跟踪性能和IMM算法的性能相当,而计算量大约是IMM算法的50%。

关键词：机动目标跟踪性能算法 IMM 加速度估计滤波器电子设备

对两个22q11缺失综合征家族遗传分析:心外表征的重要性

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世界核心医学期刊文摘（儿科学分册） 2005年第8期1卷 26-27页

作者： Shooner K.A. Rope A.F. Hopkin R.J. d.W. Benson 虎小毅 Cardiology ML 70 42 Children's Hospital Medical Center 3333 Burnet Ave Cincinnati OH 45229 - 3039 United States Dr.

Objectives: Cardiovascular malformations (CVMs) are reported to be common (～ 75% ) in patients with deletion 22q11.2 (del22q11) syndrome. To better underst and why deletions go unrecognized, we characterized the phenotype in deleted ind ividuals in two large kindreds with particular emphasis on the presence or absen ce of CVM. Study design: After the diagnosis of del22q11 in two unrelated proban ds with CVM, we sequentially evaluated family members with clinical evaluation a nd cytogenetic analysis. Results: del22q11 was identified in 13 individuals; all exhibited characteristic dysmorphic facial features, but a CVM was present in o nly 6 of 13 (46% ) individuals. Conclusions: We speculate that in the absence o f CVM, diagnosis of del22q11 is hampered by a failure to recognize extracardiac.features of the del22q11 syndrome spectrum. The data highlight the need for prim ary care physicians and specialists to familiarize themselves with the extracard iac.stigmata of del22q11 to ensure timely diagnosis in all family members.

关键词：家族遗传 q11 染色体缺失遗传学分析先证者表型特征接诊医师心血管畸形同质异形临床评估

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Composition of Cachacas produced from Five Varieties of Sugarcane and the Correlation of the presence of dhurrin in the Cane with That of Ethyl Carbamate in the product

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American Journal of plant Sciences 2019年第2期10卷 339-350页

作者： Francielli d’Carlos Cravo Wilder douglas Santiago Allan da Silva Lunguinho Richard Bispo Barbosa Renan Elan da Silva Oliveira Gabriela Fontes Alvarenga Stephano daniel Santos Rafaella Hilda Zaniti Souza Ellen Cristina de Souza Katia Julia de Almeida Josefina Aparecida de Souza david Lee Nelson Maria das Gracas Cardoso department of Food Science Federal University of LavrasC.P.LavrasMinas GeraisBrazil department of Chemistry Federal University of LavrasC.P.LavrasMinas GeraisBrazil pro-Reitoria de pesquisa e pos-Graduacao Federal University of Vales de Jequitinhonha and MucuriDiamantinaMGBrazil

The present work sought to characterize the cyanogenic glycoside dhurrin in five sugarcane varieties and to determine its possible relationship with the formation of ethyl carbamate in cachaca. For each variety, methanol, ethyl acetate and hexane extracts were prepared and submitted to thin layer chromatography. Chromatographic spots were revealed with iodine vapors. The physical and chemical parameters of the spirits produced from the five different varieties of sugar cane and by different production processes were within the legal limits. Although not exceeding the limit for ethyl carbamate, a significant variation in the final concentration of this compound was observed for each sample analyzed. The Rf values for the dhurrin standard and for the sugarcane variety Sp 83-2847 were equal, similar to those for Sp 80-3280 and CTC 11 and different from the Rf values for the RB 86-7515 and iac.86-2480 samples.

关键词： Cachaca Ethyl Carbamate Quality Glycosides Cyanide dhurrin

表现为磨玻璃密度结节的非侵袭性肺腺癌和侵袭性肺腺癌的HRCT鉴别诊断特征

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国际医学放射学杂志 2016年第6期 698-698页

作者： Y.Zhang Y.Shen J.W.Qiang J.d.Ye J.Zhang R.Y.Zhao 王欣悦 department of Radiology Jinshan Hospital & Shanghai Medical CollegeFudan University

摘要目的探讨对表现为磨玻璃密度结节的肺原位腺癌(AIS)、微侵袭性腺癌(MIA)和侵袭性腺癌(iac.鉴别诊断有价值的HRCT特征,进而选择可进行亚肺叶切除术的病

关键词：肺腺癌原位腺癌磨玻璃密度结节 HRCT 侵袭性鉴别诊断

对缺血性脑卒中病人颅内动脉钙化的测量可以提高无症状冠心病的预测率

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国际医学放射学杂志 2013年第6期 577-577页

作者： S.S.Ahn H.S.Nam J.H.Heo Y.d.Kim S.K.Lee K.H.Han 李桂来 department of Radiology Gachon University Gil Medical Center 1198 Guwol-dongNamdong-Gu Incheon 405-760Korea

摘要目的旨在研究缺血性脑卒中病人颅内动脉钙化(iac.和冠状动脉钙化(CAC)之间的关联,并评估iac.无症状冠状动脉疾病(CAd)的预测值。方法这项回顾性研究

关键词：缺血性脑卒中 CAd 无症状颅内动脉冠心病冠状动脉病病人