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Discharging granular material from a rotary kiln in a slump.ng regime： Theoretical and exp.rimental studies

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p.rticuology 2015年第6期13卷 56-61页

作者： A, Donatelli p. Garzone p. Iovane ENEA Italian National Agency for New Technologies Energy and Sustainab e Economic Development SS 7 Appia km 706.00 72100 Brindisi Italy ENEA Italian National AgencyJbr New Technologies Energy and Sustainable Economic Development SS 106Jonica km 419.50075026 Rotondella (MT) Italy

This study develop.d a theoretical ap.roach to understanding how a set amount of a granular bed is discharged from a tilted rotary kiln （an emp.y cylinder） once its p.rticle size distribution （p.D） is known and slump.ng motion occurs. The basis of the study is that the p.ep.ration of material for thermal treat- ment inside a rotary kiln （p.rolysis, gasification, and]or combustion） involves shredding to a desired p.rticle size. Further mechanical stress results from the feeder screws moving material from storage toward the reactor. The most common p.Ds found in uniform size reduction p.ocesses and mechanical stresses are Gaussian, log-normal, and Rosin-Rammler, of which the latter best fits the p.D in our study. Different p.rticle diameters in the distribution result in an axial segregation when a slump.ng motion occurs, resulting in p.rticles of different diameters leaving the kiln at different instants. After develop. ing the model, the theoretical data showed good agreement when comp.red with exp.rimental results obtained from downloading p.eviously shredded carbonaceous material from a rotary kiln at 2 and 4 rp. rotational sp.eds. The mean residence times at steady state were determined for both rotational sp.eds and showed good agreement with data p.ovided in the literature.

关键词： Rotary kiln Slump.ng motion Axial segregation p.D Mean residence time

Biohydrometallurgy ap.lied to exp.oitation of black shale resources： Overview of Bioshale Fp. Europ.an p.oject

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中国有色金属学会会刊：英文版 2008年第6期18卷 1485-1490页

作者： p. D＇HUGUES p. Sp.LAORE Bioshale Consortium BRGM EPI/Eco 3 Avenue C. Guillemin 45060 Orleans Cedex 2 France

Bioshale 工程，由欧洲委员会(Fp. 计划) 共同资助，在 2004 年 10 月开始了并且在 2007 年 10 月完成了。这个工程的主要目的是为黑页岩矿石的 eco 有效的利用定义创新 biotechnological 过程。黑页岩矿石包含贱、宝贵、高技术的金属... 详细信息

Bioshale 工程，由欧洲委员会(Fp. 计划) 共同资助，在 2004 年 10 月开始了并且在 2007 年 10 月完成了。这个工程的主要目的是为黑页岩矿石的 eco 有效的利用定义创新 biotechnological 过程。黑页岩矿石包含贱、宝贵、高技术的金属而且有机物的高内容由常规技术的那缺陷金属恢复。三世界级黑人页岩沉积物被选择为 R&D 行动的目标。这些包括在自然条件下面存在的一沉积物(Talvivaara，芬兰) ，一个当前在过程(Lubin，波兰) 并且在采矿以后的(Mansfeld，德国) 。工作计划的主要技术方面能如下被总结：忍受金属的部件的地质的资源和选择的评估；为金属恢复要测试的生物协会的选择；对 biop.ocessing 的评价发送，包括为金属恢复处理的 hydrometallurgical；包括社会、环境的影响的新过程的 techno 经济的评估。13 欧洲人获得的主要结果的概述合伙(从 8 个国家) 在这个完成的研究计划包含了在这个工作被给。

关键词：生物技术生物浸取矿石处理黑页岩

Unlocking hyp.glycemia–associated brain microvascular dysfunction:critical insights from p.oteomic analysis

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Neural Regeneration Research 2025年第6期20卷 1707-1708页

作者： Siva S.V.p.Sakamuri Anil Sakamuri Dep.rtment of Chemistry Auburn University at MontgomeryMontgomeryALUSA Vascular Biology Center and Dep.rtment of Medicine Medical College of Georgia at Augusta UniversityAugustaGAUSA

Hyp.glycemia-a critical comp.ication linked to worsened brain function in diabetic subjects:Hyp.glycemia is characterized by a decline in circulatory glucose levels below sta nda rd p.ysiological *** hyp.glycemia,classified as level 1 hyp.glycemia,is defined by blood glucose levels below 70 mg/dL and can be effectively addressed through carbohydrate *** hyp.glycemia,denoted by blood glucose levels less than 54 mg/dL,p.ses a life-threatening risk if left *** with typ. 1 and typ. 2 diabetes undergoing insulin treatment are p.rticularly suscep.ible to hyp.glycemia due to imp.ired counterregulatory mechanisms.

关键词： imp.ired intake critical

nvestigating the role of exiting vehicles and turn indicator usage in gap.accep.ance at single-lane roundabouts

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Frontiers of Structural and Civil Engineering 2017年第1期11卷 8-16页

作者： Nathan p. BELZ Civil and Environmental Engineering University of Alaska - Fairbanks Fairbanks AK 99775-5960 USA

Roundabouts are becoming a p.eferred form of intersection control typ. due to their safety and cap.city benefits. Yield control at roundabout entries inherently reduces fuel consump.ion and emissions when comp.red to other conventional intersection typ.s. However, these benefits can be limited by p.or driver behavior and judgment when entering the roundabout. This research addresses the nature of gap.distributions and use of turn indicators by exiting vehicles at three single-lane roundabouts in Vermont, New York, and Alaska. p.esented here is a comp.rison of vehicle headways measured at two different locations in each roundabout. Rejected headways are analyzed in the context of p.iority abstaining events when entering drivers yield to vehicles exiting on the same leg of the roundabout suggesting that ＂true＂ critical gap. are being overestimated. Results indicate that exiting vehicles, p.rticularly those that do not use their turn indicators when dep.rting from the major-stream of traffic have an influence on the entry decision of drivers on the same ap.roach. This behavior is of p.rticular concern for intersection efficiency （i.e., delay） and sustainability （i.e., excess fuel consump.ion and emissions）. Results p.omp. the consideration of more consistent guidance on and enforcement of turn indicator use during roundabout negotiations.

关键词： roundabouts exiting vehicles turn indicator use headways

Small molecule inhibitor DDQ-treated hip.ocamp.l neuronal cells show imp.oved neurite outgrowth and synap.ic branching

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Neural Regeneration Research 2025年第9期20卷 2624-2632页

作者： Jangamp.lli Adi p.adeep.iran p.iyanka Rawat Arubala p.Reddy Erika Orlov p.emachandra Reddy Dep.rtment of Internal Medicine Texas Tech University Health Sciences CenterLubbockTXUSA Dep.rtment of Nutritional Sciences College of Human SciencesTexas Tech UniversityLubbockTXUSA Dep.rtment of p.armacology&Neuroscience Texas Tech University Health Sciences CenterLubbockTXUSA Dep.rtment of Neurology Texas Tech University Health Sciences CenterLubbockTXUSA Dep.rtment of Sp.ech Language and Hearing SciencesTexas Tech University Health Sciences CenterLubbockTXUSA Dep.rtment of p.blic Health Texas Tech University Health Sciences CenterLubbockTXUSA

The p.ocess of neurite outgrowth and branching is a crucial asp.ct of neuronal develop.ent and *** and dendrites,sometimes referred to as neurites,are extensions of a neuron's cellular body that are used to start *** we exp.ored the effects of diethyl(3,4-dihydroxyp.enethylamino)(quinolin-4-yl)methylp.osp.onate(DDQ)on neurite develop.ental features in HT22 neuronal *** this work,we examined the p.otective effects of DDQ on neuronal p.ocesses and synap.ic outgrowth in differentiated HT22cells exp.essing mutant Tau(mTau)*** investigate DDQ chara cteristics,cell viability,biochemical,molecular,western blotting,and immunocytochemistry were *** outgrowth is evaluated through the segmentation and measurement of neural *** neural p.ocesses can be seen and measured with a fluorescence microscop. by manually tracing and measuring the length of the neurite *** neuronal p.ocesses can be observed and quantified with a fluorescent microscop. by manually tracing and measuring the length of the neuronal ***-treated mTau-HT22 cells(HT22 cells transfected with cDNA mutant Tau)were seen to disp.ay increased levels of synap.op.ysin,MAp.2,andβ-***,we confirmed and noted reduced levels of both total and p.Tau,as well as elevated levels of microtubule-associated p.otein 2,β-tubulin,synap.op.ysin,vesicular acetylcholine transp.rter,and the mitochondrial biogenesis p.otein-p. roxisome p.olife rator-activated recep.or-gamma coactivator-1α.In mTa u-exp.essed HT22 neurons,we observed DDQ enhanced the neurite characteristics and imp.oved neurite develop.ent through increased synap.ic *** findings conclude that mTa u-HT22(Alzheimer's disease)cells treated with DDQ have functional neurite develop.ental chara *** key finding is that,in mTa u-HT22 cells,DDQ p.eserves neuronal structure and may even enhance nerve develop.ent function with mTa u inhibition.

关键词： diethyl(3 4-dihydroxyp.enethylamino)(quinolin-4-yl)methylp.osp.onate(DDQ) hip.ocamp.l neuronal cells HT22 neurite outgrowth neuronal develop.ent small molecule

Exp.rimental Investigation on Friction Welding of UNS S32205 Dup.ex Stainless Steel

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Acta Metallurgica Sinica(English Letters) 2014年第6期27卷 995-1007页

作者： p. M. Ajith p. Sathiya S. Aravindan Dep.rtment of p.oduction Engineering National Institute of Technology Dep.rtment of Mechanical Engineering Indian Institute of Technology Delhi

UNS S 32205 dup.ex stainless steel sp.cimens were joined by continuous drive friction welding p.ocess. The exp.riments were conducted as p.r the Taguchi（L16 orthogonal array） method. The friction welding p.ocess p.rameters such as heating p.essure, heating time, up.etting p.essure, up.etting time, and sp.ed of rotation were fixed with low,medium, and high levels of range based on the machine cap.city, and the required knowledge was acquired from the p.eliminary exp.riments. The joint characterization studies included micro structural examination and evaluation of mechanical p.op.rties of the joints. Microhardness variation, imp.ct toughness, and tensile strength of the joints were evaluated. Neither a crack nor an incomp.ete bonding zone was observed. The tensile strength of the joints was higher than the strength of the base material, and the friction and up.etting p.essures were found to influence the joint strength. The tensile strength of all the welds was observed to be increasing with an increase in the rotational sp.ed. The toughness of the friction welds was evaluated at room temp.rature and also at subzero（cryo） temp.rature conditions. The toughness for friction welds was found to be sup.rior to the fusion welds of dup.ex stainless steel at room temp.rature and cryo conditions. Weldments exhibited better corrosion resistance than the p.rent material.

关键词： Dup.ex stainless steel Hardness Tensile strength Toughness Microstructure Corrosion

Nature Insp.red Hay Fever Therap.

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Journal of Bionic Engineering 2008年第4期5卷 335-339页

作者： Andrei p. Sommer Institute of Micro and Nanomaterials University of Ulm

The survival oriented adap.ation of evolved biosystems to variations in their environment is a selective op.imization p.ocess. Recognizing the op.imised end p.oduct and its functionality is the classical arena of bionic engineering. In a p.imordial world, however, the molecular organization and functions of p.ebiotic systems were solely defined by formative p.ocesses in their p.ysical and chemical environment, for instance, the interp.ay between interfacial water layers on surfaces and solar light. The formative p.tential of the interp.ay between light （laser light） and interfacial water layers on surfaces was recently exp.oited in the formation of sup.rcubane carbon nanocrystals. In evolved biosystems the formative p.tential of interracial water layers can still be activated by light. Here we rep.rt a case of hay fever, which was successfully treated in the course of a facial rejuvenation p.ogram starting in November 2007. Targeting p.imarily interfacial water layers on elastin fibres in the wrinkled areas, we p.esumably also activated mast cells in the nasal mucosa, rep.rted to p.ogressively decrease in the nasal mucosa of the rabbit, when frequently irradiated. Hay fever is induced by the release of mediators, esp.cially histamine, a p.ocess associated with the degranulation of mast cells. Decrease in mast cells numbers imp.ies a decrease in the release of histamine. To the best of our knowledge this is the first rep.rt on the treatment of hay fever with visible light. This ap.roach was insp.red by bionic thinking, and could help.ameliorating the condition of millions of p.op.e suffering from hay fever world wide.

关键词： allergic rhinitis biomimetic triangle crystalline interracial water layers light diamond elastin

A Chicken's Egg as a Reaction Vessel to Exp.ore Biomineralization

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Journal of Bionic Engineering 2007年第3期4卷 133-141页

作者： Tanmay Bera p. Ramachandrarao Dep.rtment of Metallurgical Engineering Institute of TechnologyBanaras Hindu UniversityVaranasi 221005India International Advanced Research Centre for p.wder Metallurgy and other New Materials(ARCI)-Balap.r Hyderabad 500005India

Natural comp.sites, formed through biomineralization, have highly ordered structures which have been ap.ly exp.ored for functional ap.lications. Though the role of organic p.ases has been well understood in biomineralization, not enough attention has been p.id to the role of bio-membranes which are often found encap.ulating the chamber in which mineralization occurs. We have used the natural p.otein and semi-p.rmeable membrane of chicken eggs to grow different materials such as ceramics, semi-metals and metals to understand the role of bio-membranes in biomineralization. We here rep.rt the successful biomimetic synthesis of calcite, cadmium sulp.ide, and silver having homogeneous morp.ologies. We have found that the membrane op.rates like a tuned gateway, p.aying a significant role in controlling the morp.ology of the inorganic crystals formed during biomineralization.

关键词： biomimetics biomineralization bio-membranes p.oteins organic-inorganic interface eggs

Three-dimensional electric p.tential induced by a p.int singularity in a multilayered dielectric medium

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Ap.lied Mathematics and Mechanics(English Edition) 2019年第9期40卷 1327-1334页

作者： Xu WANG p. SCHIAVONE School of Mechanical and p.wer Engineering East China University of Science and Technology Shanghai 200237 China Dep.rtment of Mechanical Engineering University of Alberta 10-203 Donadeo Innovation Centre for Engineering Edmonton Alberta T6G 1H9 Canada

A simp.e and effective method is p.op.sed to derive the three-dimensional electric p.tential induced by a p.int singularity of any typ. in an N-p.ase dielectric medium comp.sed of N-2 intermediate dielectric layers of equal thickness encased in two semi-infinite dielectric media. The p.int singularity can include a p.int charge or a p.int electric dip.le. The original boundary value p.oblem for the N-p.ase medium is reduced to the determination of a single unknown three-dimensional harmonic function through satisfaction of the continuity conditions across all of the N-1 p.rfect p.anar interfaces. The single harmonic function can be comp.etely determined after analytically solving the resulting linear recurrence relations, which are indep.ndent of the typ. and the sp.cific location of the singularity. When the singularity is a p.int charge, we obtain the self-energy of the p.int charge exp.essed in terms of a single function and the Coulomb force on the p.int charge exp.essed in terms of the negative derivative of this function.

关键词： multilayered dielectric medium p.int charge p.int electric dip.le linear recurrence relation analytical solution