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Large scale manufacture of magnetic polymer particles using membranes and microfluidic devices

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China Particuology 2007年第1期5卷 26-42页

作者： Richard A. williams Institute of Particle Science and Engineering School of Process Environmental and Materials Engineering University of Leeds Clarendon Road Leeds LS2 9JT United Kingdom

Magnetic polymer particles have found applications in diverse areas such as biomedical treatments, diagnosis and separation technology. These applications require the particles to have controlled sizes and narrow size distributions to gain better control and reproducibility in use. This paper reviews recent developments in the preparation of magnetic polymer particles at nano- and micro-scales by encapsulating magnetic components with dissolved or in situ formed polymers. Particle manufacture using emulsification and embedment methods produces magnetic polymer particles at micro-scale dimensions. However, the production of particles in this range using conventional emulsification methods affords very limited control over particle sizes and polydispersity. We report on alternative routes using membrane and microfluidics emulsification techniques, which have a capability to produce monodisperse emulsions and polymer microspheres （with coefficients of variation of less than 10%） in the range from submicrometer to a few 100 μm. The performance of these manufacturing methods is assessed with a view to future applications.

关键词： Magnetic polymer particles Membrane emulsification Microfluidics emulsification Large scale manufacture

Effective management : a multimedia approach / Chuck.williams.

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Fibonacci Type Semigroups

2002年

作者： Chuck.williams.

来源：畅想之星图书光盘版（南... 评论

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畅想之星图书光盘版（南通市图书馆镜像）

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Algebra Colloquium 2014年第4期21卷 647-652页

作者： Gerald williams Department of Mathematical Sciences University of Essex Colchester Essex C04 3SQ UK

We study “Fibonacci type” groups and semigroups. By establishing asphericity of their presentations we show that many of the groups are infinite. We combine this with Adjan graph techniques and the classification of the finite Fibonacci semigroups （in terms of the finite Fibonacci groups） to extend it to the Fibonacci type semigroups.

关键词： Fibonacci group Fibonacci semigroup cyclic presentation asphericity Adjangraph

Effect of nanoparticle(Pd, Pd/Pt, Ni) deposition on high temperature hydrogenation of Ti-V alloys in gaseous flow containing CO

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Progress in Natural Science:Materials International 2017年第1期27卷 93-98页

作者： S.Suwarno M.williams J.k.Solberg V.A.Yartys Department of Mechanical Engineering Institut Teknologi Sepuluh Nopember Department of Materials Science and Engineering NTNU Institute for Energy Technology University of the Western Cape

The hydrogenation properties of Ti-V hydrides coated with nanoparticles have been studied in gaseous mixtures of argon and hydrogen with and without additions of 1% CO. Nanoparticles of Pd, Ni, and co-deposited Pd/Pt with particle sizes of;0–60 nm were formed by electroless deposition on the hydride surfaces. The alloy resistance to CO could be significantly improved by particle deposition. Large amounts of hydrogen were absorbed in a CO-containing gas when Ni and Pd/Pt deposition had been applied, while pure Pd deposition had no positive effect. Ni was found to have a stronger effect than those of Pd/Pt and Pd, possibly because of the size effect of Ni nanoparticles.

关键词： Metal hydride Titanium Vanadium Nanoparticle Palladium Nickel Platinum Carbon monoxide

Landmarks in the application of electrical tomography in particle science and technology

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Particuology 2010年第6期8卷 493-497页

作者： Richard A.williams Institute of Particle Science and Engineering School of ProcessEnvironmental and Materials EngineeringUniversity of LeedsLeedsWest YorkshireLS2 9JTUK

Selected milestones in the development and use of electrical tomography in powder conveying, slurry processing and multi-phase flow are highlighted. The ability to map concentration in opaque mixtures under process-realistic conditions was a major innovation for the method and has had far reaching implications. Subsequent developments have enabled velocity information to be abstracted resulting in the ability to measure component flux and motion.

关键词： Computational fluid dynamics Fault condition and maloperation Flow measurement Flow regime identification Particle concentration Process control Process safety

肌肉浸润性尿路上皮癌：基因突变状态与转移模式和生存的相关性

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国际医学放射学杂志 2020年第4期 489-490页

作者： F.Alessandrino k.williams A.H.Nassar R.Gujrathi S.G.Silverman G.Sonpavde 胡婕 Department of Imaging Dana Farber Cancer InstituteHarvard Medical School

肌肉浸润性尿路上皮癌(MIUC)具有高基因异质性和高突变频率的特点。最近研究证明了常见的突变基因与临床生物学行为存在的相关性。但MIUC基因突变状态与转

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双螺杆挤出机在弹性体连续加工中的改进

橡塑技术与装备 2001年第6期27卷 17-20页

作者： Walter A.Ploski Rodney k.williams 田秀玲

介绍了螺杆设计上的最新改进，该项技术可使大多数产品的生产率提高超过100%，在对胶料提供同等分散力的条件下，克服了原先在一批料连续加工中碰到的温度限制。并用具体实例阐述了在EPDM(三元乙丙胶)防水卷材胶料、EPDM汽车挡风胶条和... 详细信息

介绍了螺杆设计上的最新改进，该项技术可使大多数产品的生产率提高超过100%，在对胶料提供同等分散力的条件下，克服了原先在一批料连续加工中碰到的温度限制。并用具体实例阐述了在EPDM(三元乙丙胶)防水卷材胶料、EPDM汽车挡风胶条和含氟弹性体胶料的加工过程中所取得的进展。

关键词：弹性体双螺杆挤出机连续加工 EPDM 乙丙橡胶

Genetics of anorexia nervosa:An overview of genome-wide association studies and emerging biological links

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Journal of Genetics and Genomics 2022年第1期49卷 1-12页

作者： Clara de Jorge Martinez Gull Rukh Michael J.williams Santino Gaudio Samantha Brooks Helgi BSchi oth Department of Neuroscience Functional PharmacologyUppsala UniversityUppsalaSweden Department of Biomedicine and Prevention University of Rome Tor VergataRomeItaly School of Psychology Faculty of HealthLiverpool John Moores UniversityUK Department of Psychology School of Human and Community DevelopmentUniversity of the WitwatersrandJohannesburgSouth Africa Institute for Translational Medicine and Biotechnology Sechenov First Moscow State Medical UniversityMoscowRussia

Anorexia nervosa(AN) is a complex disorder with a strong genetic component. Comorbidities are frequent and there is substantial overlap with other disorders. The lack of understanding of the molecular and neuroanatomical causes has made it difficult to develop effective treatments and it is often difficult to treat in clinical practice. Recent advances in genetics have changed our understanding of polygenic diseases,increasing the possibility of understanding better how molecular pathways are intertwined. This review synthetizes the current state of genetic research providing an overview of genome-wide association studies(GWAS) findings in AN as well as overlap with other disorders, traits, pathways, and imaging results. This paper also discusses the different putative global pathways that are contributing to the disease including the evidence for metabolic and psychiatric origin of the disease.

关键词： Anorexia nervosa Genome-wide association studies Genetic variants Psychiatry

Producing Pesta,a delivery system for biocontrol agents,by twin-screw extrusion

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Producing Pesta,a delivery system for biocontrol agents,by t...