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河北唐山达瑞威尔阶(Darriwilian)牙形刺生物地层的新认识

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古生物学报 2014年第1期53卷 1-15页

作者：王志浩 bergstrom S m 甄勇毅张元动吴荣昌中国科学院南京地质古生物研究所南京210008 School of earth Sciences Division of Earth HistoryThe Ohio State UniversityColumbusOhio 43210USABergstrom Geological Survey of New South wales Division of Resources&Energy NSw Trade&Investment W.B.Clarke Geoseience Centre947-953 Londonderry RdLondonderryNSW 2753Australia 中国科学院资源地层学与古地理学重点实验室南京210008

本文作者对河北唐山赵各庄剖面的北庵庄组(原称下马家沟组)和马家沟组(原称上马家沟组)较系统地采集了牙形刺样品,通过对所获之牙形刺标本和安太库等(1983)在同一剖面所描述的牙形刺动物群仔细研究,得到一些新的认识、分带及对比意见。... 详细信息

本文作者对河北唐山赵各庄剖面的北庵庄组(原称下马家沟组)和马家沟组(原称上马家沟组)较系统地采集了牙形刺样品,通过对所获之牙形刺标本和安太库等(1983)在同一剖面所描述的牙形刺动物群仔细研究,得到一些新的认识、分带及对比意见。唐山赵各庄剖面不仅具有丰富各异的地方型分子,如Aurilobodus leptosomatus,Loxodus dissectus,Tangshanodus tangshanensis,Rhipidognathus maggolensis,***,Triangulodus changshanensis和erraticodon tangshanensis外,尚有一些分布广泛和具地层意义的重要分子,如histiodella holodentata,eoplacognathus pseudoplanus和eoplacognathus suecicus等。根据这些重要分子和牙形刺分带原则,本文对安太庠等(1983)的牙形刺分带重新修订,即将北庵庄组的Aurilobodus leptosomatus-Loxodus dissectus带和Tangshanodus tangshanensis带修正为histiodella holodentata-Tangshanodus tangshanensis带,并由下而上可划分为Rhipidognathus maggolensis和***两地方型亚带;将马家沟组的eoplacognathus suecicus-Acontiodus?linxiensis带和Plectodina onychodonta带修正为eoplacognathus suecicus带,并由下而上又可划分为Acontiodus?linxiensis和Plectodina onychodonta两个地方型牙形刺亚带。因此,唐山地区的北庵庄组产牙形刺的部分和马家沟组可与华南的牯牛潭组和新疆塔里木盆地的大湾沟组对比,归入奥陶纪达瑞威尔阶(Darriwilian),从而改变了过去将北庵庄组产牙形刺的层位,即所谓的Aurilobodus leptosomatus-Loxodus dissectus带和Tangshanodus tangshanensis带与华南区大坪阶(Dapingian)的大湾组相对比的认识。

关键词：达瑞威尔阶牙形刺生物地层新认识唐山河北

Associations of accelerometry-measured and self-reported physical activity and sedentary behavior with skeletal muscle energetics:The Study of muscle,mobility and Aging(SOmmA)

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Journal of Sport and health Science 2024年第5期13卷 621-630页

作者： Yujia(Susanna)Qiao Terri L.blackwell Peggy m.Cawthon Paul m.Coen Steven R.Cummings Giovanna Distefano Samaneh Farsijani Daniel e.Forman bret h.Goodpaster Stephen b.Kritchevsky Theresa mau Frederico G.S.Toledo Anne b.Newman Nancy w.Glynn Department of epidemiology School of Public HealthUniversity of PittsburghPittsburghPA 15261USA San Francisco Coordinating Center California Pacific Medical Center Research InstituteSan FranciscoCA 94143USA Department of epidemiology and biostatistics University of CaliforniaSan FranciscoCA 94143USA Translational Research Institute AdventHealthOrlandoFL 32804USA Department of medicine(Geriatrics and Cardiology) University of Pittsburghand GeriatricsResearchEducationand Clinical Center(GRECC)VA Pittsburgh Healthcare SystemPittsburghPA 15261USA Department of Internal medicine Section on Gerontology and Geriatric MedicineWake Forest School of MedicineWinston-SalemNC 27109USA Division of endocrinology and metabolism Department of MedicineUniversity of PittsburghPittsburghPA 15261USA

background:Skeletal muscle energetics decline with age,and physical activity(PA)has been shown to offset these declines in older ***,many studies reporting these effects were based on self-reported PA or structured exercise ***,we examined the associations of accelerometry-measured and self-reported PA and sedentary behavior(Sb)with skeletal muscle energetics and explored the extent to which PA and sedentary behavior would attenuate the associations of age with muscle ***:As part of the Study of muscle,mobility and Aging,enrolled older adults(n=879),810(age=76.4±5.0 years old,mean±SD;58%women)had maximal muscle oxidative capacity measured ex vivo via high-resolution re spirometry of permeabilized myofibers(maximal oxidative phosphorylation(maxOXPhOS))and in vivo by ^(31)phosphorus magnetic resonance spectroscopy(maximal adenosine triphosphate(ATP_(max))).Accelerometry-measured sedentary behavior,light activity,and moderate-to-vigorous PA(mVPA)were assessed using a wrist-worn ActiGraph GT9X over 7 ***-reported sedentary behavior,mVPA,and all PA were assessed with the Community healthy Activities model Program for Seniors(ChAmPS)*** regression models with progressive covariate adjustments evaluated the associations of sedentary behavior and PA with muscle energetics,as well as the attenuation of the age/muscle energetics association by mVP A and sedentary *** a sensitivity analysis,we also examined activPAL-measured daily step count and time spent in sedentary behavior and their associations with muscle ***:every 30 min/day more of ActiGraph-measured mVPA was associated with 0.65 pmol/(s×mg)higher maxOXPhOS and 0.012 mm/s higher ATP_(max)after adjusting for age,site/technician,and sex(pht activity was not associated with maxOXPhOS or ATP_(max).meanwhile,every 30 min/day spent in ActiGraph-measured sedentary behavior was associated with 0.39 pmol/s×mg lower maxOXPhOS and0.

关键词： Aging exercise mitochondria

新型磁性异质结材料的制备及其光降解染料废水的性能

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高校化学工程学报 2023年第4期37卷 679-688页

作者：邵燕郭明孙雨婷吴荣晖胡智燕浙江农林大学化学与材料工程学院浙江杭州311300 浙江农林大学环境与资源学院浙江杭州311300

为了解决光催化剂在光生电子与空穴中分离效率低且难以回收利用的问题,以钛碳化铝(Ti_(3)AlC_(2))为原料,通过LiF+hCl刻蚀法、共沉淀法、溶剂热法和异种电荷静电自组装,获得具有磁分离性能的新型异质结光催化材料AmhNTs/TiO_(2)-Ti_(3)C... 详细信息

为了解决光催化剂在光生电子与空穴中分离效率低且难以回收利用的问题,以钛碳化铝(Ti_(3)AlC_(2))为原料,通过LiF+hCl刻蚀法、共沉淀法、溶剂热法和异种电荷静电自组装,获得具有磁分离性能的新型异质结光催化材料AmhNTs/TiO_(2)-Ti_(3)C_(2)T_(x)(h&m),对其进行结构表征,并选取偶氮类染料甲基橙(mO)为污染物模型,考察模拟太阳光下h&m的降污性能及降解机理。结果表明:制备的异质结h&m融合了二维层状与一维管状的结构特征,提高电子的传导输送,具有良好的光催化活性和磁回收性,且对mO有较好的降解性能,为构筑新型磁性无机异质结光催化材料和染料的光降解提供有价值的参考。

关键词：埃洛石二维过渡金属碳化物光催化磁分离原位氧化

Neurophysiological basis of penile erection

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Acta Pharmacologica Sinica 2007年第6期28卷 751-755页

作者： Fernanda b m PRIVIeRO Romulo LeITe R Clinton webb Cleber e TeIXeIRA Department of Physiology medical College of Georgia 1120 15th StreetCA 3101 AugustaGA30912-3000USA

Penile erection involves a complex interaction between the central nervoussystem and local *** is a neurovascular event modulated by psychologicaland hormonal *** discovery of nitric oxide (NO) as an intercellular mes-senger or neurotransmitter paved the way for identifying important mechanismsunderlying physiological and pathophysiological events in the penis,in additionto providing the knowledge for the development of new therapeutics based on anovel concept of molecule and cell *** the fact that sinusoidalendothelial cells also produce and release NO in response to chemical and possi-bly physical stimuli,roles of neurogenic NO in penile erection appear to be moreattractive and convincing,since the pharmacological neuromodulation representsan essential step to attaining penile *** dysfunction (eD) is causedby a variety of pathogenic factors,particularly impaired formation and action ***,a thorough knowledge of the physiology of erection is essential forfuture pharmacological innovations in the field of male eD,particularly targetingNO or intracellular cyclic GmP,which represent the most promising therapeuticapproach to treat patients with eD.

关键词： nitric oxide penile erection erectile dys function nitrergic nerves

Nonlinear branched flow of intense laser light in randomly uneven media

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matter and Radiation at extremes 2023年第2期8卷 25-32页

作者： K.Jiang T.w.huang C.N.wu m.Y.Yu h.Zhang S.Z.wu h.b.Zhuo A.Pukhov C.T.Zhou S.C.Ruan College of Applied Sciences Shenzhen UniversityShenzhen 518060People’s Republic of China Shenzhen Key Laboratory of Ultraintense Laser and Advanced material Technology Center for Advanced Material Diagnostic Technologyand College of Engineering PhysicsShenzhen Technology UniversityShenzhen 518118People’s Republic of China Institut für Theoretische Physik I Heinrich-Heine-Universität Düsseldorf40225 DüsseldorfGermany

branched flow is an interesting phenomenon that can occur in diverse *** is usually linear in the sense that the flow does not alter the properties of the *** flow of light on thin films has recently been *** is therefore of interest to know whether nonlinear light branching can also ***,using particle-in-cell simulations,we find that in the case of an intense laser propagating through a randomly uneven medium,cascading local photoionization by the incident laser,together with the response of freed electrons in the strong laser fields,triggers space–time-dependent optical *** resulting branching pattern depends dramatically on the laser *** is,the branching here is distinct from the existing linear *** observed branching properties agree well with theoretical analyses based on the helmholtz *** branched propagation of intense lasers potentially opens up a new area for laser–matter interaction and may be relevant to other branching phenomena of a nonlinear nature.

关键词： laser intense flow

Sjgren-Larsson综合征成年同胞的表型可变性

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世界核心医学期刊文摘（神经病学分册） 2006年第6期2卷 18-19页

作者： Lossos A. Khoury m. Rizzo w.b. 邱伟庆 Department of Neurology Hadassah University Hospital PO Box 12000 Jerusalem 91120 Israel Dr.

background: Sjgren-Larsson syndrome (SLS) is an early childhood-onset disorder with ichthyosis, mental retardation, spastic paraparesis, macular dystrophy, and leukoencephalopathy caused by the deficiency of fatty aldehyde dehydrogenase due to mutations in the ALDh3A2 gene (the gene that encodes microsomal fatty aldehyde dehydrogenase). Cerebral proton magnetic resonance spectroscopy in those with SLS demonstrates an abnormal white matter peak at 1.3 ppm, consistent wit h long-chain fatty alcohol accumulation. Objective: To define the clinical cour se and proton magnetic resonance spectroscopic findings of SLS in adults. Design and Setting: Case series in a tertiary care center. Patients: Six siblings of a consanguineous Arab family with early childhood-onset SLS who carry the 682C→T mutation in the ALDh3A2 gene were reinvestigated in adulthood. Results: The 6 affected siblings ranged in age from 16 to 36 years. All exhibited the typical c linical and imaging manifestations of SLS, but their severity markedly varied. N eurological involvement was apparently nonprogressive, and its severity showed n o correlation with age. Cerebral proton magnetic resonance spectroscopy showed a lipid peak at 1.3 ppm, with decreasing intensity in the older siblings. Conclus ion: These observations document significant clinical variability and the nonpro gressive neurological course of SLS in adult siblings with the same ALDh3A2 geno type, and demonstrate possible correlation of proton magnetic resonance spectros copic changes with age, suggesting unknown pathogenic mechanisms to compensate f or the responsible biochemical defect in this disease.

关键词：可变性综合征同胞质子磁共振波谱乙醛脱氢酶表型成年智力发育迟缓临床病程三级医疗中心

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工作面无线电波透视实测场强成像分析及应用

岩土力学 2010年第S1期31卷 435-440页

作者：吴荣新刘盛东肖玉林徐翀安徽理工大学地球与环境学院安徽淮南232001 中国矿业大学深部岩土力学与地下工程国家重点实验室江苏徐州221008 淮南矿业集团安徽淮南232001

为提高坑透数据解释效果,通过对工作面无线电波透视磁场强度的理论分析与公式推导,表明在正常煤层范围,场强值的变化主要受观测点几何位置控制;而在观测点场强路径穿过地质异常区时,主要影响因素为地质异常区内路径长及电磁波能量吸收... 详细信息

为提高坑透数据解释效果,通过对工作面无线电波透视磁场强度的理论分析与公式推导,表明在正常煤层范围,场强值的变化主要受观测点几何位置控制;而在观测点场强路径穿过地质异常区时,主要影响因素为地质异常区内路径长及电磁波能量吸收系数值。将场强值h与观测点路径长R的乘积命名为m,则正常煤层段m可视为常量,而在地质异常存在范围,m值显著降低。将工作面划分为若干小单元,进行m值层析成像反演,可求取工作面各单元m值,再除以工作面平均宽度,得到各单元格场强值,从而获得工作面实测场强成像图。张集矿探测表明,该方法较好地反映了工作面内地质异常区的平面分布情况,回采验证探测结果可靠。作为新的解释手段,正在实际坑透探测中广泛应用。

关键词：无线电波透视实测场强吸收系数层析成像地质异常

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光动力学疗法的单态氧剂量评估

中国科学（G辑） 2007年第B10期37卷 153-160页

作者：李步洪 m.T.JARVI e.h.mORIYAmA b.C.wILSON 医学光电信息科学与技术教育部重点实验室福建师范大学物理与光电信息科技学院福州350007 Department of medical biophysics University of Toronto and Ontario Cancer InstituteToronto M5G 2M9Canada

光动力学疗法(Photodynamic Therapy,PDT)是一种治疗肿瘤等疾病的一种新疗法.简要介绍了用于PDT剂量学研究的主要方法,重点阐述了利用单态氧(1O2)在1270nm的近红外发光进行PDT疗效评估的优点.利用新型光电倍增管和时间分辨光谱技术开发... 详细信息

光动力学疗法(Photodynamic Therapy,PDT)是一种治疗肿瘤等疾病的一种新疗法.简要介绍了用于PDT剂量学研究的主要方法,重点阐述了利用单态氧(1O2)在1270nm的近红外发光进行PDT疗效评估的优点.利用新型光电倍增管和时间分辨光谱技术开发了一个用于PDT剂量评估的高灵敏度1O2发光检测系统.实验测量了玫瑰红的近红外发光光谱,三重态玫瑰红和1O2在水溶液中的寿命分别为(2.77±0.17)和(3.15±0.14)μs,结果表明所开发的1O2发光检测系统具有很高的灵敏度和测量精度.离体细胞实验结果进一步表明:细胞的存活率与PDT治疗过程中所产生的累积1O2发光光子数呈正相关,所开发的1O2发光检测系统适用于PDT剂量学研究.

关键词：光动力学疗法剂量单态氧发光细胞存活率 PpIX

3D Printing Technology for Tapered Optical Fiber Protection with Gas Sensing Possibilities

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Photonic Sensors 2020年第4期10卷 298-305页

作者： Kaleb Roncatti de SOUZA Jonas h.OSÓRIO Juliana b.CARVALhO beatriz mota LImA Cristiano m.b.CORDeIRO Gleb wataghin Physics Institute State University of CampinasCampinas 13083-970Brazil

we present a new procedure for protecting micro-optical fibers(tapered fibers)by using the 3-dimensional(3D)printing technology.A standard single-mode optical fiber was tapered down to the diameter of 1mm and embedded in a polymeric matrix obtained by an additive manufacturing *** show that the proposed structure protects the fiber taper against environmental humidity while keeping permeability to gas flow and the possibility of the realization of gas detection *** our knowledge,this is the first time 3D printed casings were applied to protect fiber tapers from humidity *** envisage this new approach will allow the development of new fiber taper devices to better resist in humid environments.

关键词： 3D printing additive manufacturing optical fiber tapered fibers sensing