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Porous solid inspired hyper-crosslinked polymer liquids with highly efficient regeneration for gas purification

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Science China Materials 2022年第7期65卷 1937-1942页

作者： Stefan j.d.smith Colin d.Wood Paul H.M.Feron Hamidreza Mahdavi Roger j.Mulder Cara M.doherty Matthew R.Hill Xavier Mulet CSIRO Manufacturing Private Bag 10Clayton SouthVIC 3169Australia department of Chemical Engineering Monash UniversityClaytonVIC 3800Australia Australian Resources Research Centre KensingtonWA 6155Australia CSIRO Energy P.O.Box 330NewcastleNSW 2300Australia

Separation media that combine the desired material properties within a single material for a given process remain an ongoing challenge for the gas separations in *** integration of porous solid adsorbents is difficult due to their limited volumetric capacity,whereas issues of volatility and high regeneration temperatures exist for liquid amines and physical ***,we report a family of polymer liquids inspired by hyper-crosslinked polymers(HCPs),a class of highly swellable network *** with a chemically similar porous solid,the HCP-liquids demonstrate good volumetric capacity and improved selectivity of carbon dioxide over *** appears to be enhanced by intramolecular swelling of the HCP-liquids at elevated pressures,while guests are strongly rejected from the HCP-liquids at slightly elevated temperatures,leading to highly efficient *** of adsorption and specific heat capacity of the HCP-liquids are also low,further suggesting favourable process *** being easily prepared at scale,the presented HCP-liquids represent a promising step towards a material with the requisite properties to replace conventional scrubbing solvents to drastically reduce the footprint and energy needs of gas separations.

关键词： hyper-crosslinked polymers swellable network efficient regeneration porous liquids gas sorption

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遥感图象判读仪器介绍

云南林业调查规划 1980年第2期 53-54页

作者： j.d.smith 李芝喜云南林学院

引言遥感图象的判读,特别是地球资源卫星图象的判读,基本上是依赖于遥感图象分析和增强的仪器。水文学家、地质学家、土地利用规划工作者和农林业专家们,有些人就正在从被增强的图象的使用中得到了相当的好处。因此每一个学员在遥感训... 详细信息

引言遥感图象的判读,特别是地球资源卫星图象的判读,基本上是依赖于遥感图象分析和增强的仪器。水文学家、地质学家、土地利用规划工作者和农林业专家们,有些人就正在从被增强的图象的使用中得到了相当的好处。因此每一个学员在遥感训练当中,要求熟悉各种图象增强仪器和它们的使用方法。大家也会对这些仪器的使用感到特别浓厚的兴趣。在下面介

关键词：遥感图象仪器观察器立体镜投影器投影仪视差地球资源卫星地球物理卫星扫描点重氮胶片光谱资料

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矿山尾矿充填料的压缩—渗滤试验

矿业工程 1982年第8期 45-49+44页

作者： R.j.Mitchell j.d.smith 熊宠民加拿大史密斯工程联合公司加拿大史密斯工程联合公司

研制了一种压缩-渗滤试验装置,可用来确定水力充填料的側限应力、孔隙度和渗滤速度相互之间的关系。这种装置也可用于评定充填料的内部脱水特性以及部分饱和对渗滤速度的影响。本文介绍了这种试验装置、试验步骤和典型试验数据。

关键词：渗滤饱和度渗滤管孔隙度孔隙率试验装置充填料

Underlying solvent-based factors that influence permanent porosity in porous liquids

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Nano Research 2022年第4期15卷 3533-3538页

作者： Hamidreza Mahdavi Huacheng Zhang Lauren K.Macreadie Cara M.doherty durga Acharya Stefan j.dsmith Xavier Mulet Matthew R.Hill department of Chemical Engineering Monash UniversityClaytonVIC 3800Australia CSIRO Manufacturing Private Bag 10Clayton SouthVIC 3169Australia School of Chemistry University of SydneySydney 2006Australia

Porous liquids(PLs)offer the potential to combine the ready handling and mature industry status of liquid absorbents,with the high permanent porosity of metal organic *** be functional,these nanocomposites need to satisfy a number of performance parameters,such as stability and viscosity of the porogen-solvent combination,avoiding solvent penetration into metal organic framework(MOF)pores,suitable capacities,and kinetics for gas *** this work,we systematically investigate the component materials to elucidate the parametric space where stable photoluminescence(PL)can be *** this situation,deeper conclusions were able to be drawn with regard to the influence of hydrophobicity/philicity on the properties of the resulting *** imidazolate frameworks(ZIFs)were combined with a range of solvents varying in steric bulk,to deliver CO_(2)sorption capacities as high as 4.2 mmol·g^(-1)at 10 *** findings may have broader implications for future investigations of this tantalising field of nanocomposites.

关键词： zeolitic imidazolate frameworks porous liquids permanent porosity gas sorption

公众报告对于腰背部疼痛者进行MRI检查的作用

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国际医学放射学杂志 2015年第5期 472-473页

作者： C.M.Ganduglia M.Zezza j.d.smith S.d.john L.Franzini 李伟 department of Management Policy and Community HealthUniversity of Texas School of Public Health

摘要目的为了判断在医疗保险中心指南和医疗服务部门公共报告倡议发出后在医疗保险以及私人医疗保险人群中对于腰背疼痛病人保守治疗前进行MRI检查的比率是否有改变。材料与方法研究获得伦理委员会批准,并豁免知情同意。针对来自医疗保... 详细信息

摘要目的为了判断在医疗保险中心指南和医疗服务部门公共报告倡议发出后在医疗保险以及私人医疗保险人群中对于腰背疼痛病人保守治疗前进行MRI检查的比率是否有改变。材料与方法研究获得伦理委员会批准,并豁免知情同意。针对来自医疗保险及德克萨斯商业保险参与者[德克萨斯蓝十字盾(BCBSTX)]的收费服务索赔数据进行回顾

关键词：腰背部疼痛保守治疗 MRI 医疗保险医疗费用保险社会保险

A new view of the local Universe

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Science China(Physics,Mechanics & Astronomy) 2024年第3期67卷 167-168页

作者： Lister Staveley-smith International Centre for Radio Astronomy Research(ICRAR) University of Western AustraliaCrawley WA 6009Australia ARC Centre of Excellence for All Sky Astrophysics(ASTRO 3d) Crawley WA 6009Australia

The distribution and kinematics of gas in and around dark matter halos, the formation of stellar populations from the gravitational collapse of gas clouds, and the interaction of stars and their remnants with interste... 详细信息

关键词： galaxies stars galactic

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Competitive interactions and coexistence of sympatric flagship carnivores in Asia

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Integrative Zoology 2024年第2期19卷 183-199页

作者： Zhilin LI jiayu LU Xiaoyi SHI Li’an dUO james L.d.smith Tianming WANG Tianjin Key Laboratory of Conservation and Utilization of Animal diversity College of Life SciencesTianjin Normal UniversityTianjinChina department of Fisheries Wildlife and Conservation BiologyUniversity of MinnesotaSt.PaulMinnesotaUSA Ministry of Education Key Laboratory for Biodiversity Science and Engineering College of Life SciencesBeijing Normal UniversityBeijingChina National Forestry and Grassland Administration Key Laboratory for Conservation Ecology of Northeast Tiger and Leopard BeijingChina

Understanding the competition and coexistence of flagship carnivores is key to creating strategies for their conservation in the face of global carnivore *** studies exploring the dynamics and competition between tigers(Panthera tigris)and leopards(***)span decades,there is a lack of understanding regarding the factors that influence their coexistence mechanisms on a broad scale,as well as the drivers determining their exploitative and interference *** gathered a comprehensive list of research papers among which 36 papers explored the interspecific interactions between tigers and leopards and tested the influence of biotic and abiotic factors on the coexistence mechanisms along three dimensions using multiple response variables regression models;we also tested the influence of ecological drivers determining the exploitative or interference competition between tigers and *** and ungulate density were the most important predictors in regulating the coexistence *** and leopards exhibited more positive relations/higher overlaps as elevation increased in the spatial *** addition,they showed a higher dietary overlap in the prey-rich *** determined that interference competition between tigers and leopards was less frequently observed in habitats with dense tree cover and homogeneous vegetation ***,studies with multiple metrics would promote the detection of interference *** study provides new insight into the competitive interactions and coexistence mechanisms of tigers and leopards on a broad ***-makers and managers should pay more attention to the factors of elevation,prey abundance,and habitat structures for the conservation of tigers and leopards.

关键词： carnivores coexistence mechanisms competitive interactions exploitative competition interference competition

Facile synthesis of intra-nanogap enhanced Raman tags with different shapes

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Nano Research 2024年第9期17卷 8415-8423页

作者： Sanjun Fan Brian T.Scarpitti Zhewen Luo Abigail E.smith jian Ye Zachary d.Schultz department of Chemistry and Biochemistry The Ohio State UniversityColumbusOhio 43210USA School of Biomedical Engineering Shanghai Jiao Tong UniversityShanghai 200030China

Hot spot engineering in plasmonic nanostructures plays a significant role in surface-enhanced Raman scattering(SERS)for bioanalysis and cell ***,creating stable,reproducible,and strong SERS signals remains challenging due to the potential interference from surrounding chemicals and locating SERS-active analytes into hot-spot ***,we developed a straightforward approach to synthesize intra-gap nanoparticles encapsulating 4-nitrobenzenethiol(4-NBT)as a reporter molecule within these gaps to avoid outside *** made three kinds of intra-gap nanoparticles using nanorods,bipyramids,and nanospheres as cores,in which the nanorods based intra-gap nanoparticles exhibit the highest SERS *** advantage of our method is the ease of preparation of high-yield and stable intra-gap nanoparticles characterized by a short incubation time(10 min)with 4-NBT and quick synthesis without requiring an additional step to centrifuge for the purification of core *** intense localized field in the synthesized hot spots of these plasmonic gap nanostructures holds great promise as a SERS substrate for a broad range of quantitative optical applications.

关键词： hot spot engineering surface enhanced Raman scattering intra-gap nanoparticles 4-nitrobenzenethiol

Comparisons of oxbow lake fish assemblages in relation to bigheaded carp establishment in the lower White River, Arkansas

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Ecological Processes 2024年第1期13卷 188-205页

作者： Michael A.Eggleton Cody j.Salzmann joseph E.Kaiser Shannon C.F.smith department of Aquaculture and Fisheries University of Arkansas at Pine Bluff Arkansas Game and Fish Commission Virginia Institute of Marine Science

Background Since the late 1990s, bigheaded carps(largely silver carp [Hypophthalmichthys molitrix] but also bighead carp [H. nobilis]) have established throughout the lower Mississippi River basin. Using previously studied oxbow lakes in the lower White River basin, Arkansas, we compared current(2017, “post-carp” establishment) fish assemblages to historical(2002, “pre-carp” establishment) fish assemblages. Fish assemblages were comprehensively assessed using multiple gears, including boat electrofishing, mini-fyke nets, and experimental small-mesh gill *** T-tests suggested that fish assemblage indices of richness, diversity, evenness, and dominance were often greater(P during the post-carp period as reflected by boat electrofishing and experimental gill nets. However, all indices were generally similar(P > 0.05) between the pre-carp and post-carp period with fish assemblages depicted using mini-fyke nets. Nonmetric multidimensional scaling analyses indicated that fish assemblages differed structurally between pre-carp and post-carp periods. Assemblage differences were linked to both small and large abundance changes for more than 20 species. Abundances of gizzard shad(dorosoma cepedianum), emerald shiner(Notropis atherinoides), pugnose minnow(Opsopoeodus emiliae), crappies(Pomoxis spp.), bluegill(Lepomis macrochirus), orangespotted sunfish(L. humilis), and yellow bass(Morone mississippiensis) declined between the pre-carp and postcarp periods. Conversely, abundances of weed shiner(N. texanus), pallid shiner(Hybopsis amnis), longear sunfish(L. megalotis), buffalofishes(Ictiobus spp.), and gars(Lepisosteus spp.) generally increased during the same *** Although not possible to conclude assemblage shifts were entirely related to bigheaded carps due to the absence of an appropriate reference system where carps did not establish, the wide establishment of these carps is one of the most pervasive changes to have occurred in the lower White

关键词： Bigheaded carp Silver carp Aquatic nuisance species Fish assemblage Oxbow lake Large river