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Journal of minerals and materials characterization and Engineering 2011年第15期10卷 1391-1407页

作者： m.c. menkiti O.D. Onukwuli Department of chem.c.l Engineering Nnamdi Azikiwe University Awka Nigeria.

This work investigates the influence of pH variation on coag-flocculation kinetics and performance of chitin Derived coag-flocculant (cDc) in removal of Suspended and Dissolved Particles (SDP) from.c.al washery effluent (cWE) medium. Key parameters such as rate constant Km, half life t1/2,, and pH etc. were investigated. The best coag-flocculation performance is recorded at Km, of 0.007 l/***, t1/2, of 0.0362min, pH of 8, dosage of 100mg/l and efficiency E(%) of 99.933. minimum efficiency (%) > 94.00 was achieved at 30 minutes of coagflocculation, establishing cDc as an effective water treatment agent at the conditions of the experiment.

关键词： coal effluent coag-flocculation coagulation chitin chitosan

coag-Flocculation Studies of Afzelia Bella coagulant (ABc) in coal Effluent Using Single and Simulated multi Angle Nephelometry

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Journal of minerals and materials characterization and Engineering 2011年第3期10卷 279-298页

作者： m.c. menkiti O.D. Onukwuli Department of chem.c.l Engineering Nnamdi Azikiwe University Awka Nigeria.

Following the need for the use of environmentally friendly, renewable resource in industrial processes, this work explores the potential of an effective application in pilot scale of Afzelia bella seed as a coag-flocculant. The study evaluates the coag-flocculation efficiency and functional kinetic parameter response to varying pH and dosage of coal washery effluent and ABc respectively. The maximum.c.ag-flocculation performance is recorded at rate constant, K of 3.3333 x 10-3m3/kg.s, dosage of (0.3 and 0.2kg/m3);pH of 2 and coagulation period, τ1/2of 28.1216 s while the minimum is recorded at K of 1.6667 x 10-4m3/kg.s, dosage of 0.2kg/m3, pH of 10 and τ1/2 of 562.365 s. The least value of coag-flocculation efficiency, E (%)>89.00. Simulated and unsimulated values of rate constants Ks and K respectively are in close agreement, validating the concept of perikinetics. The potential of ABc as an effective organic coag-flocculant has been established. The results confirm that theory of rapid coagflocculation holds for the aggregation of coal washery effluent using ABc and at the conditions of the experiment.

关键词： Afzelia bella coag-flocculation coal effluent kinetics nephelometry.

Amphiphilic AIEgen-polymer aggregates:Design,self-assembly and biomedical applications

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Aggregate

Aggregate 2022年第1期3卷 75-92页

作者： Shoupeng cao Jingxin Shao Loai K.E.A.Abdelmohsen Jan c.m.van Hest Bio-Organic chemistry Institute for Complex Molecular SystemsEindhoven University of TechnologyEindhovenThe Netherlands

Aggregation-induced emission(AIE)is a phenomenon in which fluorescence is enhanced rather than quenched upon molecular *** fluorogens(AIEgens)are flexible,conjugated systems that are limited in their dynam.c. when assembled,which improves their fluorescent *** intriguing feature has been incorporated in many different molecular assemblies and has been extended to nanoparticles composed of amphiphilic polymer building *** integration of the fascinating AIE design principle with versatile polymer chemistry opens up new frontiers to approach and solve intrinsic obstacles of conventional fluorescent materials in nanoscience,including the aggregation-caused quenching ***,this integration has drawn significant attention from the nanomedicine community,due to the additional advantages of nanoparticles comprising AIEgenic molecules,such as emission brightness and fluorescence *** this regard,a range of AIEgenic amphiphilic polymers have been developed,displaying enhanced emission in the self-assembly/aggregated *** assemblies are regarded as attractive nanomaterials with inherent fluorescence,which display promising features in a biomedical context,for instance in biosensing,cell/tissue imaging and tracking,as well as(photo)*** this review,we describe recent strategies for the design and synthesis of novel types of AIEgenic amphiphilic polymers via facile approaches including direct conjugation to natural/synthetic polymers,polymerization,post-polymerization and supramolecular host−guest *** self-assembly behavior and biomedical potential will be discussed.

关键词： aggregation-induced emission amphiphilic polymers biomedical applications nanomotors supramolecular self-assembly

Growth of Free-standing Non-polar GaN on LiAlO2 Substrates by Hydride Vapor Phase Epitaxy

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Growth of Free-standing Non-polar GaN on LiAlO2 Substrates b...

Follow-up in patients with a burn-related emergency department visit:a feasibility study

第15届全国晶体生长与材料学术会议

作者： mitch m.c. chou Department of materials Science & Opto-electronic Engineering National Sun Yat-Sen University

Free-standing single crystalline gallium nitride (GaN) film was grown on LiAlO2 substrate by Hydride Vapor Phase Epitaxy(HVPE), HVPE is most effective method of fabricating a GaN substrate owing to its fast GaN growth rate. In our laboratory, LiAlO2 single crystal grown by czochralski(cz) method. Fortunately, we have developed 2-inch (100) oriented LiAlO2 wafer. After the growth, GaN was separated from LiAlO2 substrate and became free-standing. By X-ray diffraction pattern and SEm image, we found that GaN had greater part m-plane (10-10) and less c-plane (0001) orientations. Optical properties examined by room temperature photoluminescence spectra exhibit showed a strong UV emission peak at around 363 nm and a negligible yellow band emission. more experiments are performed to improve the quality of GaN single crystal.

关键词：

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Burns & Trauma 2017年第4期5卷 260-267页

作者： H. Goei B. F. m. Wijnen S. mans m. A. c. de Jongh c. H. van der Vlies S. Polinder N. E. E. van Loey m. E. van Baar Association of Dutch Burn centres Burn Centre Maasstad Hospital PO Box 9100 3007 AC Rotterdam the Netherlands Department of Plastic Reconstructive and Hand Surgery MOVE Research Institute VU University Medical Centre Amsterdam the Netherlands Association of Dutch Burn centres Burn Centre Maasstad Hospital PO Box 9100 3007 AC Rotterdam the Netherlands Department of Health Services Research CAPHRI School of Public Health and Primary Care Maastricht University 6200 MD Maastricht the Netherlands Trauma centre Brabant Elisabeth-TweeSteden Hospital Tilburg the Netherlands Burn centre Maasstad Hospital Rotterdam the Netherlands Department of Public Health Erasmus Medical Centre Rotterdam the Netherlands Association of Dutch Burn centres Red Cross Hospital Beverwijk the Netherlands Association of Dutch Burn centres Burn Centre Maasstad Hospital PO Box 9100 3007 AC Rotterdam the Netherlands Department of Public Health Erasmus Medical Centre Rotterdam the Netherlands

Background:Data on epidemiology, costs, and outcomes of burn-related injuries presenting at emergency departments (EDs) are scarce. To obtain such information, a questionnaire study with an adequate response rate is imperative. There is evidence that optimized strategies can increase patient participation. However, it is unclear whether this applies to burn patients in an ED setting. The objective of this feasibility study was to optimize and evaluate patient recruitment strategy and follow-up methods in patients with burn injuries presenting at EDs. methods:In a prospective cohort study with a 6-month follow-up, patients with burn-related injuries attending two large EDs during a 3-month study period were included. Eligible patients were quasi-randomly allocated to a standard or optimized recruitment strategy by week of the ED visit. The standard recruitment strategy consisted of an invitation letter to participate, an informed consent form, a questionnaire, and a franked return envelope. The optimized recruitment strategy was complemented by a stamped returned envelope, monetary incentive, sending a second copy of the questionnaire, and a reminder by telephone in non-responders. Response rates were calculated, and questionnaires were used to assess treatment, costs, and health-related quality of life. Results:A total of 87 patients were included of which 85 were eligible for the follow-up study. There was a higher response rate at 2 months in the optimized versus the standard recruitment strategy (43.6%vs. 20.0%;OR=3.1 (95%cI 1.1–8.8)), although overall response is low. Non-response analyses showed no significant differences in patient, burn injury or treatment characteristics between responders versus non-responders. conclusions:This study demonstrated that response rates can be increased with an optimized, but more labor-intensive recruitment strategy, although further optimization of recruitment and follow-up is needed. It is feasible to assess epidemiology, tr

关键词： Burns Emergency department Recruitment strategy Response rate Health care survey methods

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评《个人健康——社会价值》

世界社会科学 1990年第3期 77-78页

作者： m.c.克利涅尔 ,孙舟

本书给医学社会学这个还未完全确定对象和概念体系的知识领域注入了独特的内容。这门学科的理论研究状况的多面性,是由于缺乏对社会学的深入研究。今天,哲学家、经济学家,临床医师、社会卫生学专家对健康的社会方面表现出了日益浓厚的兴... 详细信息

本书给医学社会学这个还未完全确定对象和概念体系的知识领域注入了独特的内容。这门学科的理论研究状况的多面性,是由于缺乏对社会学的深入研究。今天,哲学家、经济学家,临床医师、社会卫生学专家对健康的社会方面表现出了日益浓厚的兴趣,于是大大地扩展了问题的研究领域。依据各门学科所取得的重大研究成果,这部专著就确立新知识领域的方法论地位进行了尝试,而且作者们就一系列广泛的问题进行了

关键词：个人健康医学社会学医疗社会学保健

competition for shelter between four invasive gobiids and two native benthic fish species

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current Zoology 2011年第6期57卷 844-851页

作者： N. van KESSEL m. DORENBOScH m.R.m. DE BOER R.S.E.W. LEUVEN G. van DER VELDE Radboud University Nijmegen Institute for Water and Wetland Research Department of Animal Ecology and Ecophysiology EO. Box 9010 6500 GL Nijmegen The Netherlands Radboud University Nijmegen Institute for Water and Wetland Research Department of Environmental Science P.O. Box 9010 6500 GL Nijmegen The Netherlands Natuurbalans - Limes Divergens P.O. Box 31070 6503 CB Nijmegen The Netherlands Netherlands Institute of Ecology （NIOO - KNAW） EO. Box 50 6700 AB Wageningen The Netherlands Netherlands centre for Biodiversity Naturalis EO. Box 9517 2300 RA Leiden The Netherlands

Recent invasions by non-native gobiid fish species that are ongoing in the Western European rivers Rhine and meuse, will lead to interactions with native benthic fish species. Since both non-native gobiids and native benthic species are bottom dwelling species with a preference for shelter during at least part of their life cycle, it is likely that competition for shelter will occur between these non-native and native species when shelter is a limiting factor. To investigate the importance of this m.c.a- nism for species replacements, various habitat choice experiments were conducted between two common native benthic fish spe- cies （cottus perifretum and Barbatula barbatula） and four invasive non-native gobiid species （Proterorhinus semilunaris, Neogo- bius melanostomus, N. kessleri and N. fluviatilis）. The first series of single specimen experiments determined the habitat choice of each individual fish species. In a second series of competition experiments, shifts in habitat choice in comparison with the previ- ously observed habitat choice, were determined when a native benthic fish species co-occurred with non-native gobiid species. Native c. perifretum displayed a significant shift in habitat choice in co-occurrence with the gobiids N. kessleri or P. semilunaris. c. perifretum was outcompeted and moved from the available shelter place to less preferred habitat types. During the competition experiments no change in habitat choice of B. barbatula was shown. Our study therefore suggests that competition for shelter is likely to occur in rivers invaded by N. kessleri and P. semilunaris at sites where shelter is limiting

关键词： Bullhead Exotic species Habitat choice Invasive gobies Rivers Rhine and meuse Stone loach

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再论成吉思汗在历史上的作用

世界民族 1989年第6期 22-30页

作者： m.c.卡皮查魏良弢苏联科学院通讯院士、苏联科学院东方学研究所所长

关于成吉思汗(铁木真)在世界历史上和蒙古利亚本身历史上的作用问题,许多世纪以来一直引起学者们的注意。世界上用多种语言写过他,并且还在写着他。在乌兰巴托定期召开的国际蒙古学会议证明,人们对于成吉思汗及其继承者的时代有着巨大... 详细信息

关于成吉思汗(铁木真)在世界历史上和蒙古利亚本身历史上的作用问题,许多世纪以来一直引起学者们的注意。世界上用多种语言写过他,并且还在写着他。在乌兰巴托定期召开的国际蒙古学会议证明,人们对于成吉思汗及其继承者的时代有着巨大的兴趣。在中国正显示出对于蒙古统治亚洲史的相当注意,中国蒙古史学会和中国元史学会经常召开自己的学术会议,不仅有国内学者参加,而且还邀请国外蒙古学家参加,一起讨论有关成吉思汗王朝的历史问题。现有的历史著作,其中颇大部分的一个特点是明显分为辩解赞扬和贬低打倒两大派。

关键词：成吉思汗蒙古国蒙古人民蒙古秘史铁木历史上世界历史部落联盟札木合军队

Bile leakage after loop closure vs clip closure of the cystic duct during laparoscopic cholecystectomy:A retrospective analysis of a prospective cohort

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World Journal of Gastrointestinal Surgery 2020年第1期12卷 9-16页

作者： Sandra c Donkervoort Lea m Dijksman Aafke H van Dijk Emile A clous marja A Boermeester Bert van Ramshorst Djamila Boerma Department of Surgery Onze Lieve Vrouwe GasthuisAmsterdam 1090 HMNetherlands Department of Research and Epidemiology St.Antonius HospitalNieuwegein 3435 CMNetherlands Department of Surgery Academic Medical CentreAmsterdam 1105 AZNetherlands

BAcKGROUND Laparoscopic cholecystectomy(Lc)is one of the most frequently performed surgical *** stump leakage is an underestimated,potentially life threatening complication that occurs in 1%-6%of the *** a secure cystic duct occlusion technique during Lc,bile leakage becomes a preventable *** To investigate the effect of polydioxanone(PDS)loop closure of the cystic duct on bile leakage rate in Lc *** In this retrospective analysis of a prospective cohort,the effect of PDS loop closure of the cystic duct on bile leakage complication was compared to patients with conventional clip *** regression analysis was used to develop a risk score to identify bile leakage *** rate was assessed for categories of patients with increasing levels of bile leakage *** Of the 4359 patients who underwent Lc,136(3%)underwent cystic duct closure by a PDS ***,loop closure patients had significantly more complicated biliary disease compared to the clipped closure *** the loop closure cohort,zero(0%)bile leakage occurred compared to 59 of 4223(1.4%)clip closure *** patients at increased bile leakage risk(risk score≥1)rates were 1.6%and up to 13%(4/30)for clip closure patients with a risk score≥*** risk increase paralleled a stepwise increase of actual bile leakage complication for clip closure patients,which was not observed for loop closure *** cystic duct closure with a PDS loop during Lc may reduce bile leakage in patients at increased risk for bile leakage.

关键词： Laparoscopic cholecystectomy cystic duct occlusion Bile leak Endo-loop

Droplet m.c.oreactor for high-throughput fluorescence-based measurements of single catalyst particle acidity

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m.c.osystems & Nanoengineering 2023年第2期9卷 101-111页

作者： Jeroen c.Vollenbroek Anne-Eva Nieuwelink Johan G.Bomer Roald m.Tiggelar Albert van den Berg Bert m.Weckhuysen mathieu Odijko BIOS Lab on a chip Group MESA+InstituteUniversity of TwenteHallenweg 157522 NH EnschedeThe Netherlands inorganic chemistry and catalysis Debye Institute for Nanomaterials ScienceUtrecht UniversityUniversiteitsweg 993584 CG UtrechtThe Netherlands NanoLab cleanroom MESA+InstituteUniversity of TwenteHallenweg 157522 NH EnschedeThe Netherlands

The particles of heterogeneous catalysts differ greatly in size,morphology,and most importantly,in *** these catalyst particles in batch typically results in ensemble averages,without any information at the level of individual catalyst *** date,the study of individual catalyst particles has been rewarding but is stll rather slow and often ***,these valuable in-depth studies at the single particle level lack statistical ***,we report the development of a droplet m.c.oreactor for high-throughput fluorescence-based measurements of the acidities of individual particles in fluid catalytic cracking(Fcc)equilibrium.c.talysts(EcAT).This method combines systematic screening of single catalyst particles with statistical *** oligomerization reaction of 4-methoxystyrene,catalyzed by the Bronsted acid sites inside the zeolite domains of the EcAT particles,Was performed on-chip at 95 ℃.The fluorescence signal generated by the reaction products inside the EcAT particles was detected near the outlet of the *** high-throughput acidity screening platform was capable of detecting~1000 catalyst particles at a rate of 1 catalyst particle every 2.4 *** number of detected catalyst particles was representative of the overall catalyst particle population with a confidence level of 95%.The measured fluorescence intensities showed a clear acidity distribution among the catalyst particles,with the majority(96.1%)showing acidity levels belonging to old,deactivated catalyst particles and a minority(3.9%)exhibiting high acidity *** latter are potentially of high interest,as they reveal interesting new physicochem.c.l properties indicating why the particles were still highly acidic and reactive.

关键词： catalyst acidity particle