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An assessment of steady-state conditions in single slug horizontal pneumatic conveying

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Particuology 2021年第5期19卷 187-195页

作者： A.Lavrinec O.Orozovic H.Rajabnia k.williams M.G.Jones G.E.klinzing Centre for Bulk Solids and Particulate Technologies The University of NewcastleNSW 2308Australia Department of Chemical and Petroleum Engineering The University of PittsburghPA 15261USA

This study used a 3D coupled CFD–DEM model to assess how slugs tend towards steady state in single slug horizontal pneumatic *** slug length,inlet velocity and initial stationary layer fractions were systematically varied for a total of 72 *** made observation that slugs tend towards a steady state was confirmed via a theoretical *** derivation shows that slugs move towards their steady state lengths *** allowed for a calculation of a characteristic time scale which is a measure of how quickly a slug tends towards the steady *** theoretical estimate which is a function of slug porosity,steady length,velocity and stationary layer fraction has good agreement with simulated results.A link between steady slug length and solids loading ratio was also shown.

关键词： Pneumatic conveying Dense phase Slug flow Steady state

Surgery for metastatic pancreatic neuroendocrine tumors: a narrative review

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Hepatobiliary Surgery and Nutrition 2023年第1期12卷 69-83页

作者： Jelani k.williams Jason L.Schwarz Xavier M.keutgen Division of General Surgery and Surgical Oncology Department of SurgeryUniversity of Chicago MedicineChicagoILUSA

Background and Objective:Pancreatic neuroendocrine tumors(PanNETs)are derived from the islet cells of the pancreas and have been increasing in *** of these tumors are nonfunctional although some can secrete hormones and lead to hormone-specific clinical *** is the mainstay of treatment for localized tumors,however,surgical resection is controversial in metastatic *** narrative review seeks to summarize the current literature surrounding surgery,specifically in the controversial area of metastatic PanNETs,review current treatment paradigms,and understand the benefits of surgery in this group of ***:Authors searched PubMed using the terms“surgery pancreatic neuroendocrine tumor”,“metastatic neuroendocrine tumor”,and“liver debulking neuroendocrine tumor”from January 1990 to June *** English language publications were *** Content and Findings:There is no consensus among the leading specialty organizations regarding surgery for metastatic *** considering surgery for metastatic PanNETs,tumor grade and morphology,location of the primary tumor,extra-hepatic or extra-abdominal disease,as well as liver tumor burden and metastatic distribution should be *** the liver is the most common site of metastasis and liver failure is the most common cause of death in patients with hepatic metastases,attention is centered here on debulking and other ablative *** transplantation is rarely used for hepatic metastases but could be beneficial in a small subset of *** studies have demonstrated improvement in survival and symptoms after surgery for metastatic disease,but the lack of prospective randomized control trials significantly limits analysis of surgical benefits in patients with metastatic ***:Surgery is the standard of care for localized PanNETs,while it remains controversial in metastatic *** studies have shown a survival and symptomatic be

关键词： Pancreatic neuroendocrine tumors(PanNETs) liver tumor burden hepatic metastasis liver debulking DOTATATE

Gaia Journeys: a museum-based immersive performance exploration of the Earth

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International Journal of Digital Earth 2009年第1期2卷 44-58页

作者： k.C.Yu k.williams D.Neafus L.Gaston G.Downing Department of Space Sciences Denver Museum of Nature&ScienceDenverColoradoUSA Remedy Arts LLC New York CityNYUSA Dept.Music&Entertainment Industry Studies University of Colorado at DenverDenverColoradoUSA xRez Studios Los AngelesCaliforniaUSA

Gaia Journeys is a collaborative multimedia musical and virtual reality art performance conceived by author williams,with the aid of staff at the Denver Museum of Nature&*** by astronauts who spoke of seeing a border-less world from orbit,Gaia Journeys’chief goal was to deliver this experience to museum audiences via photo-realistic virtual depictions of the Earth(from orbit as well as via spherical photographic panoramas taken from the ground)choreographed to live musical *** Journeys took place in the high resolution digital‘fulldome’Gates Planetarium,withwilliams playing the violin and keyboards,enhancing a previously recorded backing track,while visuals were generated with SCISS AB’s *** eight tracks of audio were three-dimensionally spatialised to the 16.4 sound system of the Gates Planetarium,providing an immersive sound experience to match the *** audience feedback was generally positive,with great interest in repeat or similar future *** visitor evaluations suggest the potent power of the new class of digital planetaria for displaying virtual globe datasets to the public,via both multimedia entertainment like Gaia Journeys as well as traditional lectures.

关键词： digital planetarium museums immersive displays virtual reality musical performance

Effects of 7 years of field weathering on biochar recalcitrance and solubility

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Biochar 2019年第3期1卷 237-248页

作者： Elizabeth k.williams Davey L.Jones Hannah R.Sanders Gabriel V.Benitez Alain F.Plante University of Pennsylvania PhiladelphiaPAUSA Bangor University BangorUK The University of Western Australia PerthAustralia University of Minnesota MinneapolisMNUSA

How weathering affects the physiochemical properties of biochar and its long-term carbon(C)sequestration potential remains *** this study,we measured changes in biochar recalcitrance and solubility after 7 years of weathering in a cultivated *** recalcitrance and biodegradability of weathered and unweathered hardwood biochar mixtures were determined by thermal analysis(differential scanning calorimetry)and evolved gas *** in biochar solubility and the chemical composition of biochar-derived dissolved organic carbon(DOC)were determined by repeated laboratory leaching and UV-Vis *** surface carbon-oxidation state(Cox)of biochar increased by 117.6-158.2%with weather-ing in the field,and there was an average of 0.9-1.2%decrease in biochar C contents per ***,thermal indices of biochar recalcitrance and biodegradability,which suggested intermediate C sequestration potential,were not significantly different between weathered and unweathered *** O:C ratio increased with weathering suggesting an increase in biodegradability,however,both weathered and unweathered biochars were still estimated to have half-lives of over 1000 ***-soluble organic carbon(WSOC)concentrations from the unweathered biochar rapidly decreased during laboratory leaching to levels similar to the field-weathered biochars,and aromaticity(SUVA_(254))of WSOC increased from 5.9%in the unweathered biochar to 42%aromaticity in the biochars weathered for 7 *** conclude that during short-term(years)weathering under field conditions,there is continued solubilization of increasingly aromatic biochar-C compounds,however,this accounts for a relatively small proportion of biochar C such that there is little-to-no change in biochar stability or C sequestration potential after field application.

关键词： Biochar Pyrogenic organic matter Thermal analysis Carbon sequestration Dissolved pyrogenic organic matter

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同一屋檐下

疯狂英语（阅读版） 2006年第3期 38-41页

作者： Susan k.williams 任来枫

当我在长春藤缠绕的宿舍大楼踱步时——我指的是我几年前曾就读的大学里的宿舍大楼,偶尔会听到一些让我深有感触的谈话片段。“我想有自己的公寓,这样我就可以远离我妈了。”“哥们,那房子我一刻也待不下去了,我爸妈快把我逼疯了。”

关键词：统计学专业技能父母避孕套权利测试能力曲解事实养育细节

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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

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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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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...

Artificial intelligence analysis of videos to augment clinical assessment:an overview

International Conference:Technology Transfer in Biological Control:From Research to Practice

作者： D.J.DAIGLE W.J.CONNICk M.LOVISA k.williams C.D.BOYETTE M.WATSON USDA ARSSRRCP.O.Box 19687New OrleansLA 70179USA

"Pesta" granules in which fungal propagules are encapsulated in a wheat gluten matrix were prepared in pound quantities by twin-screw extrusion. The *** these granules were compared to the *** laboratory *** the dough formulation of wheat flour,clay filler,fungus,and water,low water concentration reduced the viability of Colletotrichum

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Neural Regeneration Research 2024年第4期19卷 717-718页

作者： David C.Wong Stefan williams University of Leeds Leeds Teaching Hospitals Trust LeedsUK

Observation is a fundamental part of the practice of clinical *** of movement is particularly important for the *** such as Parkinson’s disease,multiple sclerosis,stroke,epilepsy,and many others affect a person’s movement in characteristic *** some conditions,changes in the patient’s voice can be included in this-changes in sound caused by changes in the movements of *** clinician’s detection of a characteristic abnormality,and their judgment of its severity,plays a central role in both diagnosis and the assessment of prognosis or response to ***,that practice depends upon a limited resource of experienced *** addition,these experts are limited by human visual judgment,which cannot reliably or precisely detect and measure small or subtle changes in movement(williams et al.,2023).

关键词： clinical epilepsy diagnosis

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