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Effects of experimental season of prescribed fire and nutrient addition on structure and function of previously grazed grassland

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Journal of Plant Ecology 2018年第4期11卷 576-584页

作者： Elizabeth h.Boughton Patrick J.Bohlen Julia h.maki MacArthur Agro-ecology Research Center 300 Buck Island Ranch RoadLake PlacidFL 33852USA University of Central Florida Biology 4110 Libra DriveOrlandoFL 32816USA School of Natural Resources and Environment University of Florida103 Black HallPO Box 116455GainesvilleFL 32611USA

Aims Understanding the drivers of grassland structure and function fol-lowing livestock removal will inform grassland restoration and ***,we investigated the effects of fire and nutri-ent addition on structure and function in a subtropical semi-native grassland recently released from grazing in south-central *** examined responses of soil nutrients,plant tissue nutrients,bio-mass of live,standing dead and litter,and plant species composi-tion to experimental annual prescribed fire applied during different seasons(wet season *** season),and nutrient additions(N,P and N+P)over 9 *** Experimental plots were set up in a randomized block split-plot design,with season of prescribed fire as the main treatment and nutrient addition as the subplot *** cover data were collected annually from 2002 to 2011 and plant tissue and plant biomass data were collected in 2002-2006 and *** nutrients were analyzed in 2004,2006 and *** Findings Soil total phosphorus(P)levels increased substantially with P addition but were not influenced by prescribed *** of P and N led to increased P and N concentrations in live plant tissues,but prescribed fire reduced N in live *** of tissue N were higher in all plots at the beginning of the exper-iment,an effect that was likely due to grazing activity prior to removal of *** tissue N steadily declined over time in all plots,with annually burned plots declining faster than unburned *** fire was an important driver of standing dead and litter biomass and was important for main-taining grass biomass and percent *** addition was also important:the addition of both N and P was associated with greater live biomass and woody *** of grazing,lack of prescribed fire,and addition of N+P led to a reduction of grass biomass and a large increase in biomass of a woody *** prescribed fire promoted N loss from the system by reducing

关键词： grassland nutrient enrichment nutrient limitation prescribed fire productivity

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带钢在线磁探伤检测系统

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国外钢铁 1994年第7期19卷 50-53页

作者： maki,h 白明华

一种在线高速的（１０００－ｆｐｍ）超高灵敏度的磁检测系统已经研制出来，并被用于检测罐头盒原料的微缺陷。

关键词：带钢在线检测磁探伤系统

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分子发光温度计

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低温与特气 1988年第3期6卷 64-67页

作者： Michael Petrin August h.maki 钟国林中国测试技术研究院

本文描述了一种温度计,它利用发光发射的分子传感器测量20K 以下低温温区的温度。借助光致激发,分子传感器将从两个具有光学上能够分辨的支能级受激自旋态上发出光来。由于迅速的自旋一点阵弛豫,则两个支能级处在热平衡状态下。因此,我... 详细信息

本文描述了一种温度计,它利用发光发射的分子传感器测量20K 以下低温温区的温度。借助光致激发,分子传感器将从两个具有光学上能够分辨的支能级受激自旋态上发出光来。由于迅速的自旋一点阵弛豫,则两个支能级处在热平衡状态下。因此,我们可把它当作一个双能级的辐射器,其相对发光强度按玻耳兹曼粒子数方程隋温度变化。文中还描述了一种装置,它使用光子计数法,可测量这两个能级的发光强度比。然后再用此比值算出传感器及其环境的温度。该装置采用远距离光导纤维传感读数。由于它监测的是两个发射带的强度比,所以,与激发源的起伏或者检测系统效率的起伏没有关系。这种温度测量技术是以确定系统的光子物理学及热力学性质为基础的,所用分子传感器无需单独进行校准,只需确定装置的响应曲线。

关键词：温度计分子传感器温度测量技术光子计数法热力学性质光致激发平衡状态温度变化玻耳兹曼发光强度光导纤维系统效率响应曲线强度比能级光发射自旋态辐射器粒子数装置发射带激发源物理学起伏低温

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^(95)Zr(n,γ)^(96)Zr的间接测量

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原子核物理评论 2017年第3期34卷 420-424页

作者：颜胜权李志宏王友宝 K.Nishio h.maki 苏俊李云居 I.Nishinaka K.hirose 韩银录郭冰曾晟连钢陈永寿柳卫平中国原子能科学研究院北京102413 日本原子力研发机构

^(95)Zr(n,γ)^(96)Zr是稳定燃烧的恒星中合成^(96)Zr的唯一途径,对研究恒星演化和重元素合成具有重要的意义。由于^(95)Zr半衰期为64 d,直接测量^(95)Zr(n,γ)^(96)Zr截面极为困难,因此,本工作采用替代比率法间接测量^(95)Zr(n,γ)^(96... 详细信息

^(95)Zr(n,γ)^(96)Zr是稳定燃烧的恒星中合成^(96)Zr的唯一途径,对研究恒星演化和重元素合成具有重要的意义。由于^(95)Zr半衰期为64 d,直接测量^(95)Zr(n,γ)^(96)Zr截面极为困难,因此,本工作采用替代比率法间接测量^(95)Zr(n,γ)^(96)Zr截面。本工作测量了^(94)Zr(^(18)O,^(16)Oγ)^(96)Zr和^(90)Zr(^(18)O,^(16)Oγ)^(92)Zr反应,得到了复合核^(96)Zr*和^(90)Zr*衰变到γ道的几率比,并利用截面已知的^(91)Zr(n,γ)^(92)Zr截面乘以实验所测比率,得到了En=0～8 Me V能区的^(95)Zr(n,γ)^(96)Zr中子俘获截面。

关键词：替代比率法中子俘获截面不稳定核

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Neuroinflammation as a therapeutic target in huntington's disease

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Neural Regeneration Research 2025年第3期20卷 817-818页

作者： Andrea Kwakowsky Thulani h.Palpagama Center for Brain Research and Department of Anatomy and Medical Imaging Faculty of Medical and Health SciencesUniversity of AucklandAucklandNew Zealand Pharmacology and Therapeutics School of MedicineGalway Neuroscience CentreUniversity of GalwayGalwayIreland

In 1872, George huntington presented his essay “On Chorea” to the Meigs and Mason Academy of Medicine and, in doing so, detailed a disease that would later bear his name. huntington's disease(hD) is a genetic, neurodegenerative disease that manifests as the loss of motor control,cognitive impairment,and mood and psychiatric changes in paents.

关键词： huntington inflammation Medicine

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Glial response in the midcingulate cortex in huntington’s disease

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Neural Regeneration Research 2025年第1期20卷 207-208页

作者： Thulani h.Palpagama Andrea Kwakowsky Center for Brain Research and Department of Anatomy and Medical Imaging Faculty of Medical and Health SciencesUniversity of AucklandAucklandNew Zealand Pharmacology and Therapeutics School of MedicineGalway Neuroscience CenterUniversity of GalwayGalwayIreland

huntington’s disease(hD)is a genetic disease characterized by the progressive degeneration of the striatum and *** can present with a variety of symptoms that can broadly be classified into motor symptoms,inclusive of choreatic movements and rigidity,mood and psychiatric symptoms,such as depression and apathy,and cognitive symptoms,such as cognitive *** causal mutation underlying hD results from an expansion of a CAG repeat sequence on the IT15 gene,resulting in the formation and accumulation of a mutant huntingtin protein.

关键词： huntington degeneration cortex

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Comparative chemical sensor for detection of chromium(Ⅵ) in aqueous solution

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Optoelectronics Letters 2025年第1期21卷 21-27页

作者： Sura h.AL-REKABI A.A.ALWAhIB Electrical Technique Department Al Suwayrah Technical Institute Middle Technical University Laser and Optoelectronics Department University of Technology-Iraq

A process for purifying aqueous solutions containing heavy and toxic metals such as chromium（Cr） has been investigated. One of the extremely harmful pollutants in rivers and seawater is the heavy metal ions due to their direct impacts on human, animals and plants are hexavalent Cr（Ⅵ）. Consequently, highly sensitive sensor to detect Cr is essential. Surface plasmon resonance（SPR） technique has attracted huge research interest in detecting heavy metals specifically. In this study, three types of prism-based SPR sensor, gold（Au）/silver（Ag）, Au/polyaniline（PANI） and Au/titanium dioxide（TiO2） nanostructured films, are investigated as potential sensing material to detect the presence of Cr（Ⅵ） ions in water. The base Au layer with thickness of 48.3 nm is deposited on a glass slide for all sensors. For Au/Ag, Au/PANI nanofibers and Au/TiO2sensor films, the Cr（Ⅵ） concentration is varied from 1 ppm to 15 ppm with sensitivity of 0.270 °ppm-1, 0.082 °ppm-1and 0.039 °ppm-1, respectively. Based on these results, the Au/PANI nanofibers are the most sensitive to Cr（Ⅵ） among the tested sensing materials.

关键词： Titanium dioxide

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Does mesenchymal stem cell’s secretome affect spinal sensory circuits?Implication for pain therapies

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Neural Regeneration Research 2025年第1期20卷 181-183页

作者： Francesco Ferrini Esri h.Juárez Adalberto Merighi Department of Veterinary Sciences University of TurinGrugliascoTOItaly Department of Psychiatry and Neuroscience UniversitéLavalQuébec CityQCCanada

Mesenchymal stem cells(MSCs)are multipotent adult stem cells of mesodermal origin that can be isolated from various tissues,including bone marrow,tooth pulp,adipose tissue,and umbilical *** have gained significant attention in regenerative medicine due to their ability to modulate the immune system and favor tissue *** enrich the medium in which they are cultivated with a broad range of bioactive molecules,including growth factors,cytokines,chemokines,enzymes,nucleic acids,and extracellular vesicles that collectively compose the MSC *** increasing number of pre-clinical studies suggest that delivering in vivo an MSC-conditioned medium(i.e.,the medium collected from MSC cultures after at least 3 days of exposure)exerts neuroprotective and anti-inflammatory effects in a variety of neurological conditions.

关键词： protective clinical collective

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多普勒超声心动图估测的收缩压评估肺高血压

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中华高血压杂志 2019年第12期27卷 1219-1219页

作者： Sawada N Kawata T Daimon M Nakao T hatano M maki h Kimura K hirokawa M Ishiwata J Xu B Yatomi Y Komuro I 刘青(译) 刘莉(审校) 不详

Int heart J,2019,60(4):836-844.肺高血压定义为右心导管检查(right heart catheterization,RhC)评估的静息时平均肺动脉压≥25 mm hg(1 mm hg=0.133 kPa)。多普勒超声心电图推导的肺动脉收缩压(Doppler echocardiography-derived pulmonary arterial systolic pressure,sPAPEChO)或三尖瓣反流压力梯度(tricuspid regurgitation pressure gradient,TRPG)广泛用于筛查肺高血压。

关键词：肺高血压多普勒超声心动图收缩压

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应用双弛豫对比剂显示孤立性淋巴管成像的初步临床经验

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国际医学放射学杂志 2018年第2期 233-233页

作者： B.Ripley G.J.Wilson N.Lalwani N.Briller P.C.Neligan J.h.maki 杜锐莉 Department of Radiology VA Puget Sound Health Care System Seattle Wash University of Washington School of Medicine

摘要目的比较双弛豫对比剂(DARC)MR淋巴成像与常规MR淋巴管成像,评估两者在继发性淋巴水肿病人的孤立性淋巴系统图像中的临床应用价值。材料与方法该回顾

关键词：淋巴管 MR 孤立性对比剂

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