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Investigation on Liquid Holdup in Vertical Zero Net-Liquid Flow

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Chinese journal of Chemical Engineering 2001年第3期9卷 284-290页

作者：刘磊 StuartL.scott NationalLab0ratoryofMultiphaseFlowinPowerEngineering Xi＇anJiaotongUniversityXi＇an710049China DepartmentofPetroleumEngineering TexasA＆MUniversityCollegeStationTX77843-3116U.S.A

Zero net-liquid flow (ZNLF) is a special case of upward gas-liquid two-phase flow. It is a phenomenon observed as a gas-liquid mixture flows in a conduit but the net liquid flow rate is zero. Investigation on the liquid holdup of ZNLF is conducted in a vertical ten-meter tube with diameter of 76 mm, both for Newtonian and nonNewtonian fluids. The gas phase is air. The Newtonian fluid is water and the non-Newtonian fluids are water-based guar gel solutions. The correlations developed for predicting liquid holdup on the basis of Lockhart-Martinelli parameter are not suitable to ZNLF. A constitutive correlation for the liquid holdup of vertical ZNLF was put forward by using the mass balance. It is found that the liquid holdup in ZNLF is dependent on both the gas flow rate and the flow distribution coefficient.

关键词： gas-liquid flow two-phase flow complex flow liquid holdup Newtonian fluid non-Newtonian fluid

Robust Filtration Techniques in Geometrical Metrology and Their Comparison

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International journal of Automation and computing 2013年第1期10卷 1-8页

作者： Shan Lou Wen-Han Zeng Xiang-Qian jiang Paul j. scott EPSRC Centre for Innovative Manufacturing in Advanced Metrology University of Huddersfield

Filtration is one of the core elements of analysis tools in geometrical metrology. Filtration techniques are progressing along with the advancement of manufacturing technology. Modern filtration techniques are required to be robust against outliers, applicable to surfaces with complex geometry and reliable in whole range of measurement data. A comparison study is conducted to evaluate commonly used robust filtration techniques in the field of geometrical metrology, including the two-stage Gaussian filter, the robust Gaussian regression filter, the robust spline filter and morphological filters. They are compared in terms of four aspects： functionality, mathematical computation, capability and characterization parameters. As a result, this study offers metrologists a guideline to choose the appropriate filter for various applications.

关键词： Geometrical metrology robust Gaussian regression filter robust spline filter morphological filters surface roughness

Investigation of genome structure of a cinnamyl alcohol dehydrogenase locus in a basal angiosperm hardwood species, Liriodendron tulipifera L., reveals low synteny

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journal of Systematics and Evolution 2011年第5期49卷 396-405页

作者： scott E.SCHLARBAUM Department of Forestry Wildlife and FisheriesInstitute of AgricultureThe University of Tennessee

Basal angiosperms contain a wide diversity of floral and growth forms and gave rise to the largest recent angiosperm *** none of the basal angiosperm genomes has been sequenced,examining large bacterial artificial chromosome(BAC) inserts remains the main approach to providing a first glimpse of the structure and organization of their *** this study,we sequenced a 126.9-kbp BAC contig harboring a cinnamyl alcohol dehydrogenase gene(LtuCAD1) in a basal angiosperm species,Liriodendron tulipifera L.,an important timber tree species with significant ecological and economic values.A key enzyme in lignin biosynthesis,CAD catalyzes the final step in the synthesis of *** carried out phylogenetic analyses of seven full-length CAD family genes(LtuCAD1-7) obtained from a comprehensive Liriodendron expressed sequence tag *** phylogenetic tree suggests that LtuCAD1 is the primary CAD gene involved in lignifications as it is the only Liriodendron CAD grouped with the bona fide CADs *** well as the LtuCAD1,the BAC contig contained fragmented sequences for one integrase,eight hypothetical proteins,two gag-pol polyproteins,one RNase H family protein,and one chromatin binding *** analysis with other angiosperm species suggests that the genomic segment in this BAC has undergone frequent *** study is our initial step in identifying and understanding lignin biosynthesis genes from basal angiosperm *** knowledge can help bridge the information gap between hardwood(angiosperm) and softwood(gymnosperm) species and benefit potential breeding and biotechnology application for enhanced production of biomass and digestibility in ***.

关键词： BAC contig cinnamyl alcohol dehydrogenase(CAD) gene order lignin biosynthesis synteny.

Numerical Study on the Influence Mechanism of Inlet Distortion on the Stall Margin in a Transonic Axial Rotor

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journal of Thermal Science 2012年第3期21卷 209-214页

作者： scott C.Morris Hessert Laboratory Department of Mechanical and Aerospace EngineeringUniversity of Notre Dame

A numerical study is conducted to investigate the influence of inlet flow condition on tip leakage flow (TLF) and stall margin in a transonic axial rotor.A commercial software package FLUENT,is used in the *** rotor investigated in this paper is ND_TAC rotor,which is the rotor of one-stage transonic compressor in the University of Notre *** varied inlet flow conditions are *** inlet boundary condition with hub distortion provides higher axial velocity for the incoming flow near tip region than that for the clean inflow,while the incoming main flow possesses lower axial velocity near the tip region at tip distortion inlet boundary *** the total pressure ratio curves for the three inlet flow conditions,it is found that the hub dis-torted inlet boundary condition improves the stall margin,while the tip distorted inlet boundary condition dete-riorates compressor *** axial location of interface between tip leakage flow (TLF) and incoming main flow (MF) in the tip gap and the axial momentum ratio of TLF to MF are further *** is demonstrated that the axial momentum balance is the mechanism for interface *** hub distorted inflow could de-crease the axial momentum ratio,suppress the movement of the interface between TLF and MF towards blade leading edge plane and thus enhance compressor stability.

关键词： Inlet distortion tip leakage flow stall margin axial momentum balance

Effect of particle shape and size on flow properties of lactose powders

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Particuology 2012年第2期10卷 203-208页

作者： Xiaowei Fu Deborah Huck Lisa Makein Brian armstrong Ulf Willen Tim Freeman Freeman Technology I Miller Court Severn Drive Tewkesbury Gloucestershire G1208DN UK Malvern Instruments Ltd Enigma Business Park Crovewood Rd. Malvern Worcestershire WRI4 IX.Z UK

The shape and size of particles are understood to affect the bulk behaviour of powders, though there are but few studies that present quantitative information on the relationship between particle shape and the flow properties of powder. This is due in part to the lack of techniques for rapidly determining both particle shape and the range of flow characteristics that describe the response of powders to the stress and shear experienced during their processing. This study presents data that quantifies the influence of particle shapejsize of three different lactose powders on their respective flow and bulk characteristics. Two of the samples differ in size but have similar shapes; the third sample is more spherical but similar in size to one of the other two samples, The results demonstrate that in addition to particle size, particle shape significantly affect the flow characteristics of a powder over a wide range of stress conditions.

关键词： ParticleShapeSizePowder flowFlowability

First experience with intracytoplasmic sperm injection for extreme oligozoospermia associated with Crohn's disease and 6-mercaptopurine chemotherapy

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Asian journal of Andrology 2003年第1期5卷 76-78页

作者： E.scott Sills Michael j.Tucker Division of Reproductive Endocrinology and Infertility Department of Obstetrics and Gynecology Atlanta Medical Center AtlantaGeorgia 30342USA

Aim: To describe the reproductive outcome following intracytoplasmic sperm injection (ICSI) for male factor infertility associated with Crohn's disease and 6-mercap-topurine (6-MP) chemotherapy. Methods: The male partner of a couple suffered from severe Crohn's disease and received a 3-month course of 6-MP for this condition. Two spontaneous conceptions were established before 6-MP, although post-chemotherapy semen analysis found the sperm concentration to be 8,000/mL. In vitro fertilization (IVF) with ICSI and embryo transfer was performed. Results: The woman underwent an uncomplicated controlled ovarian hyperstimulation sequence using a combined rec-FSH+hMG protocol, following late luteal phase pituitary downregulation. This culminated in the retrieval of 18 oocytes, 11 of which were fertilized with ICSI. She later delivered a normal male infant without urogenital anomaly. Four nontransferred blastocysts were cryopreserved. Conclusion: This report describes the first successful birth after ICSI for severe oligozoospermia associated with Crohn's disease and 6-MP therapy. We outline salient features of Crohn's disease, 6-MP pharmacology, and their relevance to human fertility.

关键词： 6-mercaptopurine chemotherapy infertility ICSI

A comparison of the relative efficiency of ICSI and extended culture with epididymal sperm versus testicular sperm in patients with obstructive azoospermia

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Asian journal of Andrology 2020年第2期22卷 222-226页

作者： scott j Morin Brent M Hanson Caroline R juneau Shelby A Neal jessica N Landis Richard T scott jr james M Hotaling Reproductive Medicine Associates of New jersey 140 Allen RoadBasking RidgeNJ 07920USA Division of Reproductive Endocrinology and Infertility Department of Obstetrics and GynecologySidney Kimmel Medical College at Thomas Jefferson University833 Chestnut StreetPhiladelphiaPA 19107USA Foundation for Embryonic Competence 140 Allen RoadBasking RidgeNJ 07920USA Division of Urology Department of SurgeryUniversity of Utah School of Medicine30 N 1900 ESalt Lake CityUT 84132USA Department of Obstetrics and Gynecology University of Utah School of Medicine30 N 1900 ESalt Lake CityUT 84132USA.An abbreviated version of this manuscript was published and presented as an abstract at the American Society for Reproductive Medicine(ASRM)2017 Scientific Congress.

This is a retrospective cohort study comparing blastocyst transfer outcomes following intracytoplasmic sperm injection utilizing epididymal versus testicular sperm for men with obstructive *** cases at a single center between 2012 and 2016 were *** approach was selected at the surgeon’s discretion and included microepididymal sperm aspiration or testicular sperm *** culture was exclusively utilized prior to *** primary outcome was live birth *** outcomes included fertilization rate,blastulation rate,euploidy rate,and implantation rate.A mixed effects model was ***-six microepididymal sperm aspiration cases and 93 testicular sperm extraction cases were *** live birth rate was equivalent(48.6%vs 50.5%,P=0.77).However,on mixed effects model,epididymal sperm resulted in a greater likelihood of fertilization(adjusted OR:1.37,95%CI:1.05–1.81,P=0.02)and produced a higher blastulation rate(adjusted OR:1.41,95%CI:1.1–1.85,P=0.01).As a result,the epididymal sperm group had more supernumerary blastocysts available(4.3 vs 3,Pjection following microepididymal sperm aspiration resulted in a greater number of usable blastocysts per ***,the true benefit of epididymal sperm may only be demonstrated via a comparison of cumulative pregnancy rates after multiple transfers from one cohort.

关键词： azoospermia intracytoplasmic sperm injection male infertility testicular sperm extraction

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畅通英语基础教程 2 第2版 2

Context-dependency in medicine:how neuronal excitability influences the impact of dopamine on cognition

丛书名：普通高等教育“十一五”国家级规划教材

2010年

作者：斯科特（H.Q.Mitchell-j.scott）《畅通英语》改编组

《畅通英语基础教程2（第2版）》以真实的交际型语言活动为基础，按照语言表达的难易程度分级编写，注重语言应用能力培养。从初级到中高级的英语学习全过程都有效地整合了听、说、读、写、译5种语言技能训练。该书布局系统全面、科学... 详细信息

ISBN: (纸本)9787040307498

《畅通英语基础教程2（第2版）》以真实的交际型语言活动为基础，按照语言表达的难易程度分级编写，注重语言应用能力培养。从初级到中高级的英语学习全过程都有效地整合了听、说、读、写、译5种语言技能训练。该书布局系统全面、科学合理，将功能、语法、词汇、语音和跨文化交际技能尽收其中，利于教师按照语言学习和应用的规律有效地安排教学内容与进度，既提高学习者兴趣，又锻炼学习者能力，使所学内容与涉外交流、人际交往的真实话题和场景紧密结合，反复强化，达到学、练、用合一的理想效果。《畅通英语基础教程2（第2版）》由四川大学石坚

关键词：技术学校英语教材

来源：畅想之星图书光盘版（南... 评论

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Neural Regeneration Research 2025年第11期20卷 3225-3226页

作者： Mahboubeh Ahmadi Nahid Rouhi javad Mirnajafi-Zadeh Bechara j.Saab Department of Physiology Faculty of Medical SciencesTarbiat Modares UniversityTehranIran Mobio Interactive Pte.Ltd. SingaporeRepublic of Singapore

Dopamine,often termed the"feel-good"neurotransmitter,plays a crucial role in myriad physiological and psychological brain *** dopamine is primarily associated with pleasure,reward,and motivation,its effects can be quite complex;and this complexity is further compounded when examining how dopamine functions in typical versus disease-affected neural *** pa rticula r,epilepsy,characte rized by heightened brain excitability,is linked to cognitive dysfunction,and dopamine is implicated in elements of both its pathology and *** has been successful in describing the synaptic abnormalities believed to contribute to memory issues in epilepsy,aiding in the search for effective therapies for what persists as a major medical issue.

关键词： dopamine epilepsy primarily