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Effects of hydrogel-encapsulated bacteria on the healing efficiency and compressive strength of concrete

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Journal of Road Engineering 2023年第2期3卷 156-170页

作者： Ricardo Hungria marwa m.Hassan momen mousa Bert S.Turner Department of Construction management Louisiana State UniversityBaton RougeLA 70803USA Department of Engineering Technology Sam Houston State UniversityHuntsvilleTX 77341USA

microbial-induced calcium carbonate precipitation is a promising technology for self-healing concrete due to its capability to seal *** main goal of this study was to evaluate the effects of adding hydrogelencapsulated bacteria on the compressive strength and the self-healing efficiency of *** achieve this objective,12 sets of mortar samples were prepared,including three different mineral precursors(magnesium acetate,calcium lactate,and sodium lactate),at two concentrations(67.76 and 75.00 mm/L),and under two different biological conditions(with and without bacteria).In addition,a set of plain mortar samples was prepared to serve as a *** each sample set,three mortar cubes and three beams were prepared and subjected to compression and flexural strength *** the compression tests,it was found that the sample containing calcium lactate along with yeast extract and bacteria displayed the best *** for the flexural tests,once cracked,the beams were subjected to 28 d of wet/dry cycles(16 h of water immersion and 8 h of drying),where the bottom crack width was monitored(at 0,3,7,14,28 d of wet/dry cycles).Once the sample with the highest healing efficiency was identified(the one containing calcium lactate and hydrogel-encapsulated bacteria),the study was scaled up to concrete *** sets of concrete cylinders(consisting of three control samples and three samples with bacteria along with calcium lactate)were tested under compression in order to evaluate the effect of the bacteria-precursor combination on the concrete mechanical *** samples that yielded the greatest compressive strength were the ones containing calcium lactate and bacteria,displaying an improvement of 17%as compared to the control ***,a flexural strength recovery analysis was performed on the concrete specimens revealing that the control showed better flexural strength recovery than the bacteriacontaining variant(41.5%vs.26.1%)after

关键词： Self-healing concrete Bioconcrete microbial induced calcium carbonate precipitation Precursor

Tensile and fracture properties of an mg-RE-Zn alloy at elevated temperatures

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Journal of Rare Earths 2014年第6期32卷 564-572页

作者： TROJANOVZuzanka DONI Tibor LUK Pavel PALEK Peter CHALUPOV mária TILLOV Eva BASTOVANSKY Ronald Faculty of mathematics and Physics Charles University Faculty of mechanical Engineering University of Zilina

magnesium alloy EZ10 （mg-RE-Zn） was deformed in tension at temperatures from 20 up to 520℃. A rapid decrease of the yield and tensile strength with temperature was observed at temperatures higher than 300 ℃. On the other hand, ductility of sam-ples rapidly increased in the same temperature range. Light microscopy and scanning electron microscopy was used to reveal the rea-son for these behaviours. Intermetallic particles in grain boundaries are responsible for excellent mechanical properties at lower tem-peratures. Diffusional processes occurring at temperatures higher than 300 ℃ significantly influenced the deformation mechanism as well as the fracture character.

关键词： magnesium alloy tension dislocation slip twinning dynamic recrystallization grain boundary sliding, fracture, cavitation rare

Physicians’Perspectives of Informed Consent for medical Procedures:A Qualitative Interview Study

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Journal of Health Science 2020年第1期8卷 9-26页

作者： Alfred P.minei Rachelyn Ann S.Arana sam O.Kaipu Jerry m.minei School of Law University of Papua New GuineaWaiganiPO Box 126National Capital DistrictPapua New Guinea Institute of Statistics College of Arts and SciencesUniversity of the Philippines Los BañosLaguna 4031Philippines Townsville Hospital TownsvillePO Box 670Townsville Queensland 4810Australia

This work is based on an on-going research on medical informed consent in Papua New Guinea(PNG)with 19 doctors from hospitals,health care centers and private medical establishments in the National Capital District and Central Province who voluntarily participated in the *** authors conducted an examination of doctors’understanding of informed consent for medical procedures through a qualitative interview study and we describe our *** saw a need to involved patients in decision-making about their care,ethical imperative and concerns about litigation and their complaints highlighted the issue of informed *** order for the patients to make an informed decision about medical procedure,the doctors involved in the proposed treatment should conduct the informed consent *** discussion should include the treatment,the risks and benefits of treatment,and alternative therapies with associated risks and *** studied doctors’perspectives of gaining informed consent for routine medical *** used qualitative study methods using structured interviews selected by purposive *** data collected were entered into a data base and were analyzed *** discussion is based on review of legal decisions,commentaries and our personal experience in studying medical malpractice *** have utilized case reports and several informative writings that have appeared in the world literature,as well as selections from vast amounts of material available in USA,UK,Australia,India and *** current informed consent processes do not appear to be ideal for many doctors in *** particular,there are inhibiting factors that affect patients from making medical informed decisions,doctors find time not enough to run discussions on informed consent,Department of Health does not have a standard informed consent form,patients complain about no consent form,and they have not signed consent *** are but some issues that affect patients wh

关键词： Health care professionals qualitative study consent form medical procedure litigation

Fabrication of a Low-Detection Glutamate Biosensor K3Fe（CN）6 mediated on Glutamate Oxidase Using Smart-Chips

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材料科学与工程（中英文B版） 2012年第1期2卷 30-39页

作者： m.m. Rahman Venture Business Laboratory ＆ Dept. of Electrical and Electronic Engineering Toyohashi University of Technology ToyohashiAichi 441-8580 Japan

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地下蒙特利尔:混凝土下的神话

世界建筑导报 2012年第3期27卷 13-17页

作者：克利斯朵夫·德伍尔夫 sam Chenennou Patrick Dorval Stephane Paquet

生活在蒙特利尔,你最终会面对这样一个问题:"地下城在那个方向?"你可能徜徉在这座城市的主要购物大街凯瑟琳大街上,这里H&m和Zara与脱衣舞俱乐部和热狗店并肩而立。或者,你可能在吃午饭的时候在最繁忙的麦吉尔地铁站穿梭于人群之中。无... 详细信息

生活在蒙特利尔,你最终会面对这样一个问题:"地下城在那个方向?"你可能徜徉在这座城市的主要购物大街凯瑟琳大街上,这里H&m和Zara与脱衣舞俱乐部和热狗店并肩而立。或者,你可能在吃午饭的时候在最繁忙的麦吉尔地铁站穿梭于人群之中。无论走在哪里,你都会遇到一些迷茫的游客,手里拿着免费的旅游地图,问你这个很难回答的问题。那么你最好让他们走进最近的商场或地铁站入口,然后跟他们解释,"就在那里,不过可能跟你想象的不一样。"蒙特利尔的任何一个导游都会首先告诉你,这座城市有一个32公里长的巨型建筑,

关键词：地下城庞特广场玛丽蒙特利尔加拿大城市规划师混凝土无机非金属材料神话民间文学

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法尔克大街屋顶改造，奥地利，维也纳

城市环境设计 2020年第4期 66-75页

作者： mathis Barz Robert Hahn Stefan Krüger max Pauly Karin sam Valerie Simpson Gerald Zugmann COOP HImmELBLAU Duccio malagamba

项目大事记/CHRONOLOGY设计/Design:1983深化设计/Design Development:1987施工/Construction:1988竣工/Completion:1988项目参数/PROJECT DATA建筑面积/Floor Area:400m2总体积/Cubage:2 400m3如果说我们曾遇到过什么建筑（设计）上的...

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Arbuscular mycorrhizal associations in different forest tree species of Hazarikhil forest of Chittagong, Bangladesh

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Journal of Forestry Research 2012年第1期23卷 115-122页

作者： P. P. Dhar m. A. U. mridha Department of Botany Dinajpur Govt. College Dinajpur-5200 Bangladesh Department of Botany University of Chittagong Chittagong-4331 Bangladesh

Biodiversity of arbuscular mycorrhizal （Am） colonization and Am fungal spores were studied in the roots and rhizosphere soils of ,4cacia catechu （L.f）. Wild., A. mangium Willd, Anthocephala cadamba miq., Artocarpus chaplasha Roxb., Chickrassia tabularis A. Juss., Swie- tenia macrophylla King., Tectona grandis L. from plantations; Albizia procera （Roxb.） Benth., ,4. falcataria L., Alstonia scholaris （L.） R. Br., ,4phanamixis polystachya （Wall.） Parker., Hydnocarpus kurzii （King.） Warb., Heynea trijuga Roxb., Lagerstroemia speciosa （L.） Pers., messua ferrea Linn., Podocarpus nerifolia Don., Swintonia floribunda Griff., Syzygiumfruticosum （Roxb.） DC., S. grandis （Wt.） Wal. from forest and nursery seedlings of A. polystachya, A. chaplasha, Gmelina arborea Roxb. and S. cuminii （L.） Skeels from Hazarikhil forest, Chittagong of Bangladesh. Roots were stained in aniline blue and rhiz0sphere soils were assessed by wet sieving and decanting methods. The range of Am colonization varied significantly from 10%-73% in the plantations sam- ples. maximum colonization was observed in A. mangium （73%） and minimum colonization was observed in C. tabularis （10%）. Vesicular colonization was recorded 15%-67% in five plantation tree species. The highest was in A. cadamba （67%） and the lowest was in T. grandis; A. chaplasha and C. tabularis showed no vesicular colonization. Arbuscular colonization was recorded 12%-60% in four plantation tree species. The highest was in .4. mangium （60%） and the lowest was in A. cadamba. Roots of Artocarpus chaplasha, C. tabularis and T. grandis showed no arbuscular colonization. Among 12 forest tree species, nine tree species showed Am colonization. The highest was in A. falcataria （62%） and the lowest was in S. fruticosum （10%）. Significant variation in vesicular colonization was recorded in seven forest tree species. The highest was in H. trijuga （52%） and the lowest was in L. speciosa 08%）. Hydnocarpus kurzii, m. ferrea, P. nerifolia S. fruticosum and S

关键词： Arbuscular mycorrhizal fungi root colonization spore popu-lation

Effectiveness of non-pyrimethamine-based regimens for toxoplasma encephalitis:A systematic and meta-synthesis study

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Asian Pacific Journal of Tropical medicine 2022年第3期15卷 106-113页

作者： David Susanto Arthur H.P.mawuntu Finny Warouw Windy m.V.Wariki Neurology Department Faculty of MedicineSam Ratulangi University/R.D.Kandou HospitalManadoIndonesia Department of Community medicine Faculty of MedicineSam Ratulangi UniversityManadoIndonesia

Objective:To examine the differences in effectiveness and side effects between pyrimethamine-based and non-pyrimethamine-based regimens for toxoplasma encephalitis since the availability of pyrimethamine in Indonesia is currently limited due to its withdrawal from the ***:A systematic review and meta-synthesis study that was carried out by following a protocol guided by the Preffered Reporting Items for Systematic Review and meta-analysis(PRISmA).Effectiveness measures included clinical improvement,mortality,and radiological *** evaluated selected articles narratively because of the limitations of *** risk of bias in RCTs was assessed using the Cochrane Risk of Bias tool for RCT(ROB 2.0)and cohort studies were assessed using the Risk of Bias In Non-Randomized Studies of Interventions(ROBINS-1)*** quality was assessed using the GradePro ***:We included two retrospective cohort studies and one *** outcome assessment in these three studies did not show significant difference in effectiveness between pyrimethamine-based and non-pyrimethamine-based regimens for toxoplasma encephalitis ***,drug side effects were consistently higher in the pyrimethamine-based ***:This study has a high risk of *** quality of the research also has a low recommendation ***,the results may be considered for application if a standard regimen is not available.

关键词： Toxoplasma encephalitis Alternative treatment Without pyrimethamine Systematic review meta-synthesis

Roles of Ubiquitination in the Control of Phosphate Starvation Responses in Plants

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Journal of Integrative Plant Biology 2013年第1期55卷 40-53页

作者： mónica Rojas-Triana Regla Bustos Ana Espinosa-Ruiz Salom Prat Javier Paz-Ares Vicente Rubio The samuel Roberts Noble Foundation Department of Plant Biology 2510 Sam Noble Parkway Ardmore CBGP (INIA-UPm) Departamento de Biotecnología Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria Campus de Montegancedo Centro Nacional de Biotecnología (CNB-CSIC) Darwin

Throughout evolution, plants have evolved sophisticated adaptive responses that allow them to grow with a limited supply of phos-phate, the preferential form in which the essential macronutrient phosphorus is absorbed by plants. most of these responses are aimed to increase phosphate availability and acquisition through the roots, to optimize its usage in metabolic processes, and to protect plants from the deleterious effects of phosphate deficiency stress. Regulation of these adaptive responses requires fine percep- tion of the external and internal phosphate levels, and a complex signal transduction pathway that integrates information on the phosphate status at the whole-plant scale. The molecular mecha-nisms that participate in phosphate homeostasis include transcriptional control of gene expression, RNA silencing mediated by microRNAs, regulatory non-coding RNAs of miRNA activity, phosphate transporter trafficking, and post-translational modification of proteins, such as phosphorylation, sumoylation and ubiquitination. Such a varied regulatory repertoire reflects the complexity intrinsic to phosphate surveying and signaling pathways. Here, we describe these regulatory mechanisms, emphasizing the increasing importance of ubiquitination in the control of phosphate starvation responses.

关键词： Phosphate homeostasis phosphate signaling phosphate starvation post-translational control ubiquitin.