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Twisted fiber microfluidics:a cutting-edge approach to 3D spiral devices

Microsystems & Nanoengineering 2024年第1期10卷 193-202页

作者： Shunsuke Kato Daniel W.carlson amy Q.Shen Yuanyuan Guo Department of Electrical Information and Physics EngineeringSchool of EngineeringTohoku UniversityAoba-kuSendai 980-8579 MiyagiJapan Micro/Bio/Nanofluidics Unit Okinawa Institute of Science and TechnologyOnnaKunigami-gun 904-0495 OkinawaJapan Frontier Research Institute for Interdisciplinary Sciences(FRIS) Tohoku UniversityAoba-kuSendai 980-0845 MiyagiJapan Graduate School of Biomedical Engineering Tohoku UniversityAoba-kuSendai 980-8579 MiyagiJapan Department of Physiology Graduate School of MedicineTohoku UniversityAoba-kuSendai 980-8575 MiyagiJapan

The development of 3D spiral microfluidics has opened new avenues for leveraging inertial focusing to analyze small fluid volumes,thereby advancing research across chemical,physical,and biological *** traditional straight microchannels rely solely on inertial lift forces,the novel spiral geometry generates Dean drag forces,eliminating the necessity for external fields in fluid ***,fabricating 3D spiral microfluidics remains a labor-intensive and costly endeavor,hindering its widespread ***,conventional lithographic methods primarily yield 2D planar devices,thereby limiting the selection of materials and geometrical *** address these challenges,this work introduces a streamlined fabrication method for 3D spiral microfluidic devices,employing rotational force within a miniaturized thermal drawing process,termed as *** innovation allows for rapid prototyping of twisted fiber-based microfluidics featuring versatility in material selection and heightened geometric *** validate the performance of these devices,we combined computational modeling with microtomographic particle image velocimetry(uTPiM)to comprehensively characterize the 3D flow *** results corroborate the presence of a steady secondary flow,underscoring the effectiveness of our *** 3D spiral microfluidics platform paves the way for exploring intricate microflow dynamics,with promising applications in areas such as drug delivery,diagnostics,and lab-on-a-chip systems.

关键词： thereby straight twisted

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The HIF-1α/PLOD2 axis integrates extracellular matrix organization and cell metabolism leading to aberrant musculoskeletal repair

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Bone Research 2024年第2期12卷 289-301页

作者： Heeseog Kang amy L.Strong Yuxiao Sun Lei Guo conan Juan Alec c.Bancroft Ji Hae choi chase A.Pagani Aysel A.Fernandes Michael Woodard Juhoon Lee Sowmya Ramesh Aaron W.James David Hudson Kevin N.Dalby Lin Xu Robert J.Tower Benjamin Levi center for Organogenesis Regeneration and TraumaDepartment of SurgeryUniversity of Texas SouthwesternDallasTX 75390USA Section of Plastic Surgery Department of SurgeryUniversity of MichiganAnn ArborMI 48109USA Quantitative Biomedical Research center Peter O’Donnell Jr.School of Public HealthUniversity of Texas SouthwesternDallasTX 75390USA Department of Orthopedics and Sports Medicine University of WashingtonSeattleWA 98195USA Division of chemical Biology and Medicinal chemistry College of PharmacyUniversity of Texas at AustinAustinTX 78712USA Department of Pathology Johns Hopkins UniversityBaltimoreMD 21218USA

While hypoxic signaling has been shown to play a role in many cellular processes,its role in metabolism-linked extracellular matrix(EcM)organization and downstream processes of cell fate after musculoskeletal injury remains to be ***(HO)is a debilitating condition where abnormal bone formation occurs within extra-skeletal *** andhypoxia-inducible factor 1α(HIF-1α)activation have been shown to promote ***,the underlying molecular mechanisms bywhich the HIF-1αpathway in mesenchymal progenitor cells(MPcs)contributes to pathologic bone formation remain to ***,we used a proven mouse injury-induced HO model to investigate the role of HIF-1αon aberrant cell ***-cell RNA sequencing(scRNA-seq)and spatial transcriptomics analyses of the HO site,we found that collagen EcM organizationis the most highly up-regulated biological process in *** mesenchymal cell-specific deletion of Hif1α(Hoxa11-creER^(T2);Hif1a^(fl/fl))significantly mitigated HO in ***-seq analysis of these Hoxa11-creER^(T2);Hif1a^(fl/fl)mice identified the PLOD2/LOXpathway for collagen cross-linking as downstream of the HIF-1αregulation of ***,our scRNA-seq data and mechanisticstudies further uncovered that glucose metabolism in MPcs is most highly impacted by HIF-1α*** a translational aspect,a pan-LOX inhibitor significantly decreased HO.A newly screened compound revealed that the inhibition of PLOD2 activity in MPcssignificantly decreased osteogenic differentiation and glycolytic *** suggests that the HIF-1α/PLOD2/LOX axis linked tometabolism regulates HO-forming MPc *** results suggest that the HIF-1α/PLOD2/LOX pathway represents a promisingstrategy to mitigate HO formation.

关键词： metabolism skeletal aberrant

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Storylines of family medicine Ⅲ:core principles—primary care,systems and family

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Family Medicine and community Health 2024年第S3期12卷 23-32页

作者： William B Ventres Leslie A Stone Timothy A Joslin John W Saultz Sommer Aldulaimi Paul R Gordon John c Lane Eric R Lee Jacob Prunuske Limor Gildenblatt Michael H Friedman colleen T Fogarty Susan H McDaniel Tessa Rohrberg amy Odom Family and Preventive Medicine University of Arkansas for Medical Sciences College of MedicineLittle RockArkansasUSA Family Medicine Oregon Health&Science UniversityPortlandOregonUSA Family and community Medicine University of Arizona Medical Center–South CampusTucsonArizonaUSA Family and community Medicine University of Arizona Medical Center–University CampusTucsonArizonaUSA UAMS West Regional campus Family Medicine Residency Program Fort SmithArkansasUSA Medical college of Wisconsin–central Wisconsin campus WausauWisconsinUSA Family and community Medicine Medical College of Wisconsin–Central Wisconsin CampusWausauWisconsinUSA Family Medicine Advocate Illinois Masonic Medical CenterChicagoIllinoisUSA Family Medicine Presence Saints Mary and Elizabeth Medical CenterChicagoIllinoisUSA Family Medicine University of Rochester Medical CenterRochesterNew YorkUSA Psychiatry and Family Medicine University of Rochester Medical CenterRochesterNew YorkUSA Family and community Medicine University of Kansas School of Medicine-WichitaWichitaKansasUSA Sparrow/Michigan State University Family Medicine Residency Program LansingMichiganUSA

Storylines of Family Medicine is a 12-part series of thematically linked mini-essays with accompanying illustrations that explore the many dimensions of family medicine,as interpreted by individual family physicians and medical educators in the USA and elsewhere around the ***‘Ⅲ:core principles—primary care,systems,and family’,authors address the following themes:‘continuity of care—building therapeutic relationships over time’,‘comprehensiveness—combining breadth and depth of scope’,‘coordination of care—managing multiple realities’,‘Access to care—intersectional,systemic,and personal’,‘Systems theory—a core value in patient-centered care’,‘Family-oriented practice—supporting patients’health and well-being’,‘Family physician as family member’and‘Family in the exam room’.May readers develop new understandings from these essays.

关键词： individual Storyline principles

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The outcomes and safety of patients undergoing endoscopic retrograde cholangiopancreatography combining a single-use cholangioscope and a single-use duodenoscope:A multicenter retrospective international study

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Hepatobiliary & Pancreatic Diseases International 2024年第1期23卷 71-76页

作者： Alessandro Fugazza Matteo colombo Michel Kahaleh V.Raman Muthusamy Bick Benjamin Wim Laleman carmelo Barbera carlo Fabbri Jose Nieto Abed Al-Lehibi Mohan Ramchandani amy Tyberg Haroon Shahid Avik Sarkar Dean Ehrlich Stuart Shermand cecilia Binda Marco Spadaccini Andrea Iannone Kareem Khalaf Nageshwar Reddy Andrea Anderloni Alessandro Repici Division of Gastroenterology and Digestive Endoscopy Humanitas Research Hospital-IRCCSVia Manzoni 5620089RozzanoMilanoItaly Gastroenterology Rutgers Robert Wood JohnsonNew BrunswickNew JerseyUSA Vatche and Tamar Manoukian Division of Digestive Diseases University of CaliforniaLos Angeles School of Medicine at UCLALos AngelesCaliforniaUSA Division of Digestive and Liver Disorders Indiana University School of MedicineIndianapolisINUSA Department of Gastroenterology and Hepatology University Hospitals LeuvenKU Leuven3000 LeuvenBelgium U.O.c.di Gastroenterologia ed Endoscopia Digestiva Ospedale Giuseppe MazziniASL TeramoItaly Gastroenterology and Digestive Endoscopy Unit Forlì-Cesena HospitalsAUSL RomagnaForlì-CesenaItaly Borland Groover clinic JacksonvilleFloridaUSA Department of Gastroenterology and Hepatology King Fahad Medical CityRiyadhSaudi Arabia Asian Institute of Gastroenterology HyderabadIndia Section of Gastroenterology Department of Emergency and Organ TransplantationUniversity of BariBari 70124Italy Department of Biomedical Sciences Humanitas UniversityVia Rita Levi Montalcini 420090Pieve EmanueleMilanItaly

Background: Duodenoscope-related multidrug-resistant organism(MDRO) infections raise concerns. Disposable duodenoscopes have been recently introduced in the market and approved by regulatory agencies with the aim to reduce the risk of endoscopic retrograde cholangiopancreatography(ERcP) associated infections. The aim of this study was to evaluate the outcome of procedures performed with single-use duodenoscopes in patients with clinical indications to single-operator cholangiopancreatoscopy. Methods: This is a multicenter international, retrospective study combining all patients who underwent complex biliopancreatic interventions using the combination of a single-use duodenoscope and a single-use cholangioscope. The primary outcome was technical success defined as ERcP completion for the intended clinical indication. Secondary outcomes were procedural duration, rate of cross-over to reusable duodenoscope, operator-reported satisfaction score(1 to 10) on performance rating of the single-use duodenoscope, and adverse event(AE) rate. Results: A total of 66 patients(26, 39.4% female) were included in the study. ERcP was categorized according to ASGE ERcP grading system as 47(71.2%) grade 3 and 19(28.8%) grade 4. The technical success rate was 98.5%(65/66). Procedural duration was 64(interquartile range 15-189) min, cross-over rate to reusable duodenoscope was 1/66(1.5%). The satisfaction score of the single-use duodenoscope classified by the operators was 8.6 ± 1.3 points. Four patients(6.1%) experienced AEs not directly related to the single-use duodenoscope, namely 2 post-ERcP pancreatitis(PEP), 1 cholangitis and 1 ***: Single-use duodenoscope is effective, reliable and safe even in technically challenging procedures with a non-inferiority to reusable duodenoscope, making these devices a viable alternative to standard reusable equipment.

关键词： Single-operator cholangioscopy Single-use duodenoscope Endoscopic retrograde cholangiopancreatography Indeterminate biliary stricture Difficult biliary stones

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Is the type of insufflation a key issue in gastro-intestinal endoscopy?

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World Journal of Gastroenterology 2014年第9期20卷 2193-2199页

作者： amy c Lord Stefan Riss Department of General Surgery Basingstoke and North Hampshire Hospital Basingstoke Hampshire RG24 9NA United Kingdom Department of General Surgery Medical University of Vienna A-1090 Vienna Austria

Endoscopic procedures continue to play an emerging role in diagnosing and treating upper and lower gastrointestinal (GI) disorders. In particular, the introduction of colonoscopy in bowel cancer screening has underlined its promising role in decreasing the incidence of colorectal cancer and reducing tumour related mortality. To achieve these goals patients need to contemplate endoscopic examinations as painless and fearless procedures. The use of carbon dioxide (cO2) as an alternative insufflation gas in comparison to air has been considered as an essential key to improving patients’ acceptance in undergoing endoscopic procedures. cO2 is absorbed quickly through the bowel mucosa causing less luminal distension and potentially less abdominal pain. However, its exact role has not been defined completely. In particular, the beneficial use of cO2 in upper GI endoscopy and in sedated patients is still conflicting. In the present review, we aimed to assess the current evidence for using cO2 in endoscopy and to evaluate its potential role in the future.

关键词： Gastrointestinal endoscopy colonoscopy Endoscopic retrograde cholangiopancreatography Insufflation gas carbon dioxide

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Sublethal effects of subzero temperatures on the light brown apple moth, Epiphyas postvittana: fitness costs in response to partial freezing

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Insect Science 2019年第2期26卷 311-321页

作者： amy c. Morey Robert c. Venette William D. Hutchison Department of Entomology University of Minnesota St. Paul Minnesota USA USDA. Forest Service Northern Research Station St. Paul Minnesota USA

Population responses to envir on mental extremes often dictate the bounds to species' distributions. However, population dynamics at, or near, those range limits may also be affected by sublethal effects. We exposed late instars and pupae of an invasive leafroller, Epiphyaspostvittana (Walker)(Lepidoptera: Tortricidae), to cold temperatures and measured the effects of exposure on subsequent survivorship, development, and reproduction. cold temperature was applied as acute exposure to -10 °c (a low, but not immediately lethal temperature for this species) or the onset of freezing (the peak of the supercooling point exotherm). Survival was defined as the ability to successfully eclose as an adult. We measured immature development times, pupal mass, and adult longevity as proxies of fitness in survivors. Additionally, surviving insects were mated with individuals that had not been exposed to cold to measure fertility. There was no difference between the proportion of larvae or pupae that survived acute exposure to -10 °c and those exposed to the control temperature. Approximately 17% of larvae and 8% of pupae survived brief periods with internal ice formation and continued development to become reproductively viable adults. Importantly, surviving the onset of freezing came with significant fitness costs but not to exposure to -10 °c;most insects that survived partial freezing had lower fertility and shorter adult lifespans than either the -10 °c or control group. These results are discussed within the context of forecasting invasive in sect distributions.

关键词： fertility invasive species partial freeze tolerance supercooling point

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cLUSTERING PATENTS USING NON-EXHAUSTIVE OVERLAPS

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Journal of Systems Science and Systems Engineering 2010年第2期19卷 162-181页

作者： charles V. TRAPPEY amy J.c. TRAPPEY chun-Yi WU Department of Management Science National Chiao Tung University Taiwan China Department of Industrial Engineering & Management National Taipei University of Technology Taiwan China Department of lndustrial Engineering & Engineering Management National Tsing Hua University Taiwan China

Patent documents are unique external sources of information that reveal the core technology underlying new inventions. Patents also serve as a strategic data source that can be mined to discover state-of-the-art technical development and subsequently help guide R＆D investments. This research incorporates an ontology schema to extract and represent patent concepts. A clustering algorithm with non-exhaustive overlaps is proposed to overcome deficiencies with exhaustive clustering methods used in patent mining and technology discovery. The non-exhaustive clustering approach allows for the clustering of patent documents with overlapping technical findings and claims, a feature that enables the grouping of patents that define related key innovations. Legal advisors can use this approach to study potential cases of patent infringement or devise strategies to avoid litigation. The case study demonstrates the use of non-exhaustive overlaps algorithm by clustering US and Japan radio frequency identification （RFID） patents and by analyzing the legal implications of automated discovery of patent infringement.

关键词： Data mining patent analysis patent infringement non-exhaustive overlap clustering ontology schema

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Neurovascular unit in diabetic retinopathy:pathophysiological roles and potential therapeutical targets

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Eye and Vision 2021年第3期8卷 135-153页

作者： Shen Nian amy c.Y.Lo Yajing Mi Kai Ren Di Yang Department of Pathology Xi’an Medical UniversityXi’anShaanxi ProvinceChina Department of Ophthalmology LKS Faculty of MedicineThe University of Hong KongHong KongHong Kong Institute of Basic Medicine Science Xi’an Medical UniversityXi’anShaanxi ProvinceChina Department of Biochemistry and Molecular Biology Xi’an Medical UniversityXi’anShaanxi ProvinceChina Department of Ophthalmology First Affiliated Hospital of Kunming Medical UniversityKunming Medical UniversityKunmingYunnan ProvinceChina

Diabetic retinopathy(DR),one of the common complications of diabetes,is the leading cause of visual loss in working-age individuals in many industrialized *** has been traditionally regarded as a purely microvascular disease in the ***,an increasing number of studies have shown that DR is a complex neurovascular disorder that affects not only vascular structure but also neural tissue of the *** of neural retina could precede microvascular abnormalities in the DR,leading to microvascular ***,disruption of interactions among neurons,vascular cells,glia and local immune cells,which collectively form the neurovascular unit,is considered to be associated with the progression of DR early on in the ***,it makes sense to develop new therapeutic strategies to prevent or reverse retinal neurodegeneration,neuroinflammation and impaired cell-cell interactions of the neurovascular unit in early stage ***,we present current perspectives on the pathophysiology of DR as a neurovascular disease,especially at the early *** novel treatments for preventing or reversing neurovascular injuries in DR are discussed as well.

关键词： Diabetic retinopathy Neurovascular unit Neurodegeneration Gliosis Inflammation treatment

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RE-ENGINEERING TRANSFORMER MAINTENANcE PROcESSES TO IMPROVE cUSTOMIZED SERVIcE DELIVERY

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Journal of Systems Science and Systems Engineering 2011年第3期20卷 323-345页

作者： amy J.c. TRAPPEY Yong SUN charles V. TRAPPEY Lin MA Department of Industrial Engineering and Engineering Management National Tsing Hua University Taiwan China Department of Industrial Engineering and Management National Taipei University of Technology Taiwan China School of Engineering Systems Queensland University of Technology Australia Department of Management Science National Chiao Tung University Taiwan China

The outage of a transformer in a power generation system will generally result in a shutdown of the entire system. consequentially, large amounts of revenue are lost to the plant owner with a substantial negative impact on the civil community and industrial customers. This paper analyzes the current maintenance practices （i.e., an as-is process model） of a transformer manufacturing company, which provides maintenance services to power generation plants and reports the major weaknesses in current business practices. The maintenance weaknesses include isolated processes and paper based information communication. These inefficient processes result in service delays, cost increases, and inappropriate responses to customers＇ specific requests and complaints. To improve the efficiency and flexibility of the entire transformer maintenance service system, an e-integration approach is implemented with three key tasks. First, the current business processes are re-engineered to provide an improved （to-be） business model. Then, we replace paper based documentation methods with an electronic filing system for efficient and cost-effective information exchange. Afterward, the improved process model is implemented as an Internet based system to enhance the interactions among the transformer manufacturer, end-users, and service contractors for customized maintenance services. The case study demonstrates that implementing the e-integration approach increases the efficiency and effectiveness of the customized maintenance services.

关键词： Business Processes Reengineering (BPR) asset maintenance power industry after-sales services transformers engineering

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SPEcIAL ISSUE EDITORIAL ON ADVANcES IN cOLLABORATIVE SYSTEMS ENGINEERING FOR PRODUcT DESIGN, PRODUcTION AND SERVIcE NETWORK

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Journal of Systems Science and Systems Engineering 2016年第2期25卷 139-141页

作者： amy J.c. Trappey Weiming Shen John Jianzhong cha Department of Industrial Engineering and Engineering Management National Tsing Hua University Taiwan China Integrated Manufacturing Technologies Institute National Research Council Canada Canada Department of Mechanical Engineering Beijing Jiaotong University China

From the perspectives of engineering （cE）, computer concurrent supported cooperative work （cScW）, product lifecycle management （PLM）, to collaborative supply chain and service network, collaborative systems engineering （cSE） has been extended and enriched in many research efforts. cSE is not just a technique or method but also a fundamental business philosophy and strategy.

关键词： perspectives concurrent engineering

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