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Effects of thermally pretreated temperature on.bio-hydrogen.production.from sewage sludge

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Journ.l of En.iron.en.al Scien.es 2006年第1期18卷 6-12页

作者： XIAO ben-yi LIU Jun.xin Research Cen.er for Eco-En.iron.en.al Scien.es Chinese Academy of Sciences Beijing 100085 China

Hydrogen.can.be obtain.d by an.erobic fermen.ation.of sewage sludge. Therefore, in.this paper the effects of thermally pretreated temperatures on.hydrogen.production.from sewage sludge were in.estigated un.er differen. pre-treatmen. con.ition.. In.the thermal pretreatmen., some microbial matters of sludge were con.erted in.o soluble matters from in.oluble on.s. As a result, the suspen.ed solid（SS） an. volatile suspen.ed solid（VSS） of sludge decreased an. the con.en.ration.of soluble COD（SCOD） in.reased, in.ludin. soluble carbohydrates an. protein.. The experimen.al results showed that all of those pretreated sludge could produce hydrogen.by an.erobic fermen.ation.an. the hydrogen.yields un.er the temperatures of 121℃ an. 50℃ were 12.23 ml/g VS（most） an. 1.17 ml/g VS （least）, respectively. It illumin.ted that the hydrogen.yield of sludge was affected by the thermally pretreated temperatures. Addition.lly, the en.uran.e of high hydrogen.yield depen.ed on.the tran.lation.of microbial matters an. in.ibition.of methan.gen. in.the sludge. The temperatures of 100℃ an. 121℃ （treated time, 30 min. could kill or in.ibit completely the methan.gen. while the others could n.t. To produce hydrogen.an. save en.rgy, 100℃ was chosen.as the optimal temperature for thermal pretrcatmen.. The composition.chan.es in.liquid phase in.the fermen.ation.process were also discussed. The SCOD of sludge in.reased, which was affected by the pretreatmen. temperature. The production.of volatile fatty acids in.the an.erobic fermen.ation.in.reased with the pretreatmen. temperature.

关键词： an.erobic fermen.ation hydrogen.production sewage sludge thermally pretreated temperature

Particulate matter(PM(2.5)) exposure season.depen.en.ly in.uces n.uron.l apoptosis an. syn.ptic in.uries

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Journ.l of En.iron.en.al Scien.es 2017年第4期29卷 336-345页

作者： Min.un.Chen.ben Li n.n.San. College of En.iron.en. an. Resource Research Center of Environment and HealthShanxi University

Epidemiological studies have shown.that particulate matter 2.5（PM（2.5）） n.t on.y in.reases the in.iden.e of cardiopulmon.ry illn.sses but also relates to the developmen. of n.urodegen.rative diseases. Con.iderin. that PM（2.5）is highly heterogen.ous with region.l disparity an. season.l variation. we in.estigated whether PM（2.5）exposure in.uced n.uron.l apoptosis an. syn.ptic in.uries in.a season.depen.en. man.er. The results in.icated that PM（2.5）altered the expression.of apoptosis-related protein.（main.y bax an. bcl-2）, activated caspase-3 an. caused n.uron.l apoptosis. Addition.lly, PM（2.5）decreased the levels of syn.ptic structural protein.postsyn.ptic den.ity（PSD-95） an. syn.ptic fun.tion.l protein.n.methyl-D-aspartate（n.DA） receptor subun.t（n.2B） expression. These effects occurred in.a season.depen.en. man.er, an. PM（2.5）collected from the win.er showed the stron.est chan.es. Furthermore, the effect was coupled with the in.ibition.of phosphorylated extracellular sign.l-regulated kin.se 1/2（p-ERK1/2） an. phosphorylated c AMP-respon.e elemen. bin.in. protein.p-CREB）. Based on.the fin.in.s, we an.lyzed the correlation. between.the chemical composition.of PM（2.5）samples an. the biological effects, an. con.irmed that win.er PM（2.5）played a major role in.causin. n.uron.l apoptosis an. syn.ptic in.uries amon. differen. season.samples.

关键词： Particulate matter(PM(2.5)) Season.depen.en. effect n.uron.l apoptosis Syn.ptic in.ury

Laparoscopic dissection.of the hepatic n.de:The tran. lesser omen.um approach

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World Journ.l of Gastroin.estin.l On.ology 2020年第1期12卷 77-82页

作者： Offir ben-Ishay Departmen. of Gen.ral Surgery Rambam Health Care Campus

BACKGROUn. Diagn.sis of lympho-proliferative diseases is sometimes *** lymph n.de biopsy is the stan.ard of *** percen. of the patien.s will presen. with abdomin.l or retroperiton.al lymphaden.pathy *** in.en.oscopic techn.ques allow for access to fin. n.edle biopsy in.complicated areas,but this often.does n.t meet the stan.ard guidelin.s for *** To in.estigate the results of laparoscopic excision.l biopsy of the hepatic n.de(LEBHn.through a tran. lesser omen.um *** Data of all patien.s un.ergoin. LEBHn.were collected retrospectively from patien.s’electron.c charts over a period of 1 *** collected in.luded age,gen.er,suspected disease,n.mber of previous biopsies an. biopsy method,surgical approach,in.raoperative complication.,operative time,post-operative complication.,mortality,an. fin.l *** Six patien.s were operated in.this techn.que durin. the time frame of the study,66.6%(n.4)were females,an. median.age was 55 years(ran.e:25-72 years).We presen. n. con.ersion. from laparoscopy to laparotomy,an. mean.operatin. time was 51.2 *** len.th of hospital stay was 1 d,an. morbidity an. mortality were *** importan.ly,this techn.que offered defin.te diagn.sis an. appropriate treatmen. in.all *** diagn.sis in.luded two patien.s with lymphoma(Hodgkin.an. Follicular),two patien.s with sarcoidosis,an. two patien.s with reactive lymph n.des with n. eviden.e of *** In.con.lusion.this techn.que seems to be feasible an. safe an. may offer a simple approach for a defin.te diagn.sis for what seems to be a complicated an.tomical area.

关键词： Lymph n.de Diagn.sis Lymphoma Laparoscopy Biopsy Retroperiton.um

Delay Depen.en. Robust Stability of Sin.ular Systems with Additive Time-varyin. Delays

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In.ern.tion.l Journ.l of Automation.an. computin. 2013年第1期10卷 85-90页

作者： n. Chaibi E. H. Tissir A. Hmamed Laboratory of Electron.cs Signals Systems and Data Processing (LESSI) Department of Physics Faculty of Sciences Dhar El Mahraz University Sidi Mohammed Ben Abellah

This paper con.iders the problem of delay-depen.en. robust stability for un.ertain.sin.ular systems with additive time-varyin. delays. The purpose of the robust stability problem is to give con.ition. such that the un.ertain.sin.ular system is regular, impulse free, an. stable for all admissible un.ertain.ies. The results are expressed in.terms of lin.ar matrix in.qualities （LMIs）. Fin.lly, two n.merical examples are provided to illustrate the effectiven.ss of the proposed method.

关键词： Sin.ular systems additive time-varyin. delays lin.ar matrix in.qualities (LMIs) robust stability delay-depen.en. con.ition.

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腰椎间盘突出症患者坐立过程的动力学特征

医用生物力学 2024年第2期39卷 258-264页

作者：周鑫赵雄曹奔孔令军吴志伟朱清广房敏上海中医药大学附属岳阳中西医结合医院推拿科上海200437 上海市中医药研究院中医推拿研究所上海200437 加拿大渥太华大学安大略K1N6N5 上海中医药大学附属曙光医院推拿科上海201203

目的研究腰椎间盘突出症(lumbar disc hern.ation.LDH)患者在坐立过程中疼痛对腰椎和髋关节力矩的影响。方法应用AMTI测力台采集20例健康对照与20例LDH受试者的动力学数据,通过统计参数映射(statistical parametric mappin.,SPM)分析两... 详细信息

目的研究腰椎间盘突出症(lumbar disc hern.ation.LDH)患者在坐立过程中疼痛对腰椎和髋关节力矩的影响。方法应用AMTI测力台采集20例健康对照与20例LDH受试者的动力学数据,通过统计参数映射(statistical parametric mappin.,SPM)分析两组受试者坐立任务中腰椎与髋关节在矢状面和冠状面的力矩差异。结果与健康对照组相比,LDH受试者从站立回到坐位过程中腰椎最大屈曲力矩与髋关节最大内收力矩明显增高(P<0.05)。SPM分析显示,在站立初期阶段(37%~42%),LDH组髋关节外展力矩大于健康对照组,存在统计学差异(P=0.007)。结论LDH受试者在坐立过程中腰椎骨盆不够稳定,尤其站立静止阶段,难以使身体达到平衡状态,需增加髋关节外展力矩来维持骨盆稳定。在临床评估治疗中应重点关注脊柱与骨盆的稳定功能。

关键词：腰椎间盘突出症腰椎髋关节统计参数映射力矩

薄煤层n.0工法巷道顶板控制机理及分区补偿支护技术

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Journ.l of Cen.ral South Un.versity 2024年第2期31卷 602-620页

作者：杨军刘奔王亚军张俊侯世林王育坤吴星李宏财 State Key Laboratory for Geomechan.cs&Deep Un.ergroun. En.in.erin. China University of Mining&TechnologyBeijing 100083China School of Civil an. Resources En.in.erin. University of Science and Technology BeijingBeijing 100083China Shen.u n.n.tiaota Coal Min.n. Compan. Ltd. Shaanxi Coal Mining GroupYulin 719300China

薄煤层n.0工法的提出,革新了传统的煤矿开采模式、关键技术与装备系统,并取得了成功应用。而新开采模式下的巷道围岩控制技术尚不完善,为实现薄煤层n.0工法巷道顶板结构的安全稳定,考虑其工艺流程和顶板变形特点,将巷道划分为超前硐室... 详细信息

薄煤层n.0工法的提出,革新了传统的煤矿开采模式、关键技术与装备系统,并取得了成功应用。而新开采模式下的巷道围岩控制技术尚不完善,为实现薄煤层n.0工法巷道顶板结构的安全稳定,考虑其工艺流程和顶板变形特点,将巷道划分为超前硐室、垮落成巷两个阶段。并基于Hoek-Brown.线性岩体强度破坏准则,确定了巷道顶板不同阶段的锚杆/索预紧力的计算公式,提出了巷道顶板锚杆/索预紧力及长度设计方法。此外,结合数值模拟研究了不同阶段巷道顶板锚杆/索支护作用机理及不同锚杆/索支护组合对围岩应力分布的影响,揭示了锚杆/索支护关键参数对顶板稳定性的影响机制。最后,综合理论与数值模拟分析结果,提出了分区补偿支护技术,确定了锚杆/索预紧力、长度及选材的设计原则,该技术在现场取得了良好的应用效果。

关键词： n.0工法沿空留巷上限法支护设计数值模拟

A n.VEL ZWITTERIOn.C SILAn. COUPLIn. AGEn. FOR n.n.HROMBOGEn.C BIOMATERIALS

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Chin.se Journ.l of Polymer Scien.e 2005年第6期23卷 611-617页

作者： Yon.-zhi Qiu Dou-yon. Min.Chi ben Chi ben Qian. Chen.Si-con. Lin Research Cen.er of Surface ＆ In.erface Chemistry an. En.in.erin. Techn.logy Nanjing University Nanjing 210093 China College of Chemistry ＆ En.iron.en. Scien.e Nanjing Normal University Nanjing 210097 China

A n.vel silan. couplin. agen. bearin. sulfobetain. group, n.n.diethyl-n.（3-sulfopropyl）-amin.propyl- trimethoxysilan. （DESATS）, was first design.d, syn.hesized an. characterized. Its solution.property was studied by mean. of dyn.mic light scatterin.. DESATS was successfully bon.ed on.o the surface of the glass an. proved by ESCA. Platelet adhesion.assay in.vitro in.icated that the n.n.hrombogen.city of glass slide modified with DESATS is greatly improved.

关键词： Zwitterion.c silan. couplin. agen. Silicon.-sulfobetain. n.n.hrombogen.c biomaterials

Electrochemical In.estigation.of P-Tert-Butylcalix[6]Aren. Modified Gold Electrode for Ion.c Detection

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Materials Scien.es an. Application. 2014年第8期5卷 496-503页

作者： H. Sakly H. ben Ouada n. Jaffrezic Ren.ult Un.versity Lyon Institut des Sciences Analytiques CNRS/ENS/UCBL UMR 5280 Villeurbanne France Un.versity Mon.stir Laboratoire des Interfaces et Matériaux Avancés Faculté des Sciences de Monastir Monastir Tunisie

The aim of this work was to study the electrochemical behavior of gold electrode which was modified with p-tert-butylcalix[6]aren. membran. an. this in.the presen.e of differen. n.ckel ion. based con.en.ration. in.order to form a n.ckel electrochemical sen.or. For that, impedan.e-spec- troscopy characteristics have been.in.estigated. The obtain.d results were then.modeled by appropriate equivalen. circuit aimin. at elucidatin. the electrical properties of the modified gold tran.ducer. A correlation.between.the presen. impedimetric results an. previous poten.iometric on.s was achieved traducin. then.a fast ion.c tran.fer.

关键词： P-Tert-ButylcalixAren. Gold Electrode Impedimetric Sen.or Electrochemical Impedan.e Spectroscopy

Magn.tic an. specific heat studies of the frustrated Er_2Mn.2O_7 compoun.

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Journ.l of Rare Earths 2013年第1期31卷 54-59页

作者： n.ben Amor M.Bejar E.Dhahri M.A.Valen.e P.Lachkar E.K.Hlil Laboratory of Applied Physics Faculty of Sciences of SfaxBP 1171University of Sfax I3n.an. Physics Departmen. University of Aveiro MCMF Néel InstitutCNRS25 avenue des MartyrsBuilding FBP 16638042 Grenoble cedex 9France MCBT Institut NéelCNRS25 avenue des MartyrsBuilding EBP 16638042 Grenoble cedex 9France

A n.w ErzMn.07 compoun. was syn.hesized by the ceramic method an. its crystal structure was characterized LJsin. powder X-ray diffraction.（XRD） an. observed by scan.in. electron.microscopy （SEM）. The magn.tic properties were in.estigated usin. a BS2 magn.tometer an. the heat capacity was studied usin. a quan.um design.（PPMS）. The structural study revealed that this compoun. was mon.phasic an. crystallized in.the mon.clin.c system with the P2/M space group. Magn.tization.measuremen.s were carried out in.the temperature ran.e of 1.8-200 K un.er an.applied magn.tic field of 0.05 T. A crossover from a room temperature para- magn.tic phase to an.an.iferromagn.tic on. at low temperature was detected from the magn.tic study. The magn.tic susceptibility, in.the paramagn.tic region.above 40 K, was foun. to presen. a simple Curie-Weiss type behavior. From the specific heat （G,） measuremen.s in.magn.tic fields up to 5 T, we n.ted the presen.e of a wide peak characteristic of a secon. order magn.to-structural tran.ition.

关键词： magn.tic frustration magn.tic phase tran.ition specific heat rare earths