检索结果-南通市图书馆

Light(Advanced Manufacturing) 2024年第1期5卷 3-18页

作者： Huaping Tang Chaofeng Gao Shiheng Zhang Xiaojing Xiong Sheng Cao Xiaopeng Wu Yunjie Bi jeremy Heng Rao Institute of Advanced Additive Manufacturing Ji Hua LaboratoryFoshanGuangdong528200China Department of Mechanical Engineering College of EngineeringShantou UniversityShantouGuangdong515063China School of Materials Science and Engineering Northeastern UniversityShenyang 110819China

The effects of direct aging treatment(at 300°C for 5 hours)on selective laser melted(SLMed)Al-4.5Mn-1.5Mg-0.9Sc-0.2Zr alloy were investigated in this work,with the microstructure,fatigue behaviors,and fracture characteristics examined to determine the primary cause of fatigue crack *** results revealed that the microstructure of the investigated alloy comprised fine equiaxed and columnar *** aging treatment,a significant number of nano-scaled Al3(Sc,Zr)precipitates were dispersed within the grains,leading to a substantial increase in *** yield strength improved from 431 MPa to 568 MPa,representing an increase of more than 32%,while the fatigue strength improved from 180 MPa to 220 MPa after aging ***,the fracture toughness decreased significantly from 25.1 MPa·√m to 12.3 MPa·√*** results of the fatigue fracture characteristics indicate that the Mn-rich phase and the formation of defects such as pores and poor powder fusion are the sources of fatigue *** direct aging treatment can significantly increase the yield strength,decrease the rate of fatigue crack propagation,and thus improve the fatigue performance,it deteriorates the fracture toughness,and thus shortens the fatigue life of the alloy as well.

关键词： Selective laser melting Al-Mn-Sc alloys High-cycle fatigue

Implications of de Facto Reuse on Future Regulatory Developments for Beaufort-Jasper Water & Sewer Authority in Okatie, South Carolina, USA

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Environmental Protection 2024年第2期15卷 173-192页

作者： Tricia H. Kilgore Shubhashini Oza jeremy Hatfield Katherine Y. Bell Department of Technology and Innovation Beaufort-Jasper Water & Sewer Authority Okatie SC USA Department of Research and Innovation Brown and Caldwell Charlotte NC USA Department of Digital Solutions Brown and Caldwell Cleveland OH USA Department of Research and Innovation Brown and Caldwell Nashville TN USA

A significant portion of the national water supply can be attributed to de facto or unplanned potable reuse, though the extent of its contribution is difficult to estimate. Fortunately, the contribution of Water Resource Recovery Facility (WRRF) effluent to waters that supply drinking water treatment plants has been documented by some communities. In the United States (US), among the top 25 most impacted drinking water treatment plants by upstream WRRF, 16% of the influent flow to the drinking water treatment plant under average streamflow and up to 100% under low-flow conditions is WRRF effluent. Currently, the full extent of de facto reuse in the US may be much higher because of population growth. The scenario is no different for Beaufort-Jasper Water and Sewer Authority (BJWSA) in South Carolina, US, with contributions to the Savannah River originating from numerous WRRF and other upstream dischargers. South Carolina coastal utilities such as BJSWA are considering direct and indirect potable reuse options, driven by disposal limitations and challenges. Currently, South Carolina does not have a framework, guidelines, or regulations for reuse, but discussions have started among the regulated community. In addition to understanding the extent of de facto reuse, the state will need to develop standards and best practices to enable future adoption of planned potable reuse solutions to water resources challenges. Such guidance should address human health risk management and technical considerations regarding treatment in addition to other factors, including source control, storage, fail-safe operation, monitoring, non-cost factors, and public acceptance. This study conducted a mapping assessment specific to BJWSA, sampled at four locations on Savannah River, and observed that de facto reuse is approximately 4.6% to 5.9% during low-flow months and is within the range generally observed nationwide. When coupled with evidence that planned potable reuse can improve human h

关键词： Water Reuse De Facto Reuse Planned Potable Reuse Water Recycling Wastewater Derived Contaminants

Metal to insulator transition for conducting polymers in plasmonic nanogaps

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Light(Science & Applications) 2024年第1期13卷 23-32页

作者： Yuling Xiong Rohit Chikkaraddy Charlie Readman Shu Hu Kunli Xiong Jialong Peng Qianqi Lin jeremy J.Baumberg NanoPhotonics Centre Cavendish LaboratoryDepartment of PhysicsUniversity of CambridgeCambridgeCB30HEUK School of Physics&Astronomy University of BirminghamEdgbastonBirminghamUK College of Advanced Interdisciplinary Studies and Hunan Provincial Key Laboratory of Novel Nano-Optoelectronic Information Materials and Devices National University of Defense TechnologyChangshaChina Hybrid Materials for Opto-Electronics Group Department of Molecules and MaterialsMESA+Institute for NanotechnologyMolecules Center and Center for Brain-Inspired Nano SystemsFaculty of Science and TechnologyUniversity of TwenteEnschedeNetherlands

Conjugated polymers are promising material candidates for many future applications in flexible displays, organic circuits, and sensors. Their performance is strongly affected by their structural conformation including both electrical and optical anisotropy. Particularly for thin layers or close to crucial interfaces, there are few methods to track their organization and functional behaviors. Here we present a platform based on plasmonic nanogaps that can assess the chemical structure and orientation of conjugated polymers down to sub-10 nm thickness using light. We focus on a representative conjugated polymer, poly(3,4-ethylenedioxythiophene) (PEDOT), of varying thickness (2-20 nm) while it undergoes redox in situ. This allows dynamic switching of the plasmonic gap spacer through a metal-insulator transition. Both dark-field (DF) and surface-enhanced Raman scattering (SERS) spectra track the optical anisotropy and orientation of polymer chains close to a metallic interface. Moreover, we demonstrate how this influences both optical and redox switching for nanothick PEDOT devices.

关键词： transition insulator conjugated

A prospective cohort of men with localized prostate cancer on active surveillance protocol in Hong Kong,China:what did we learn?

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Asian Journal of Andrology 2024年第3期26卷 245-249页

作者： Xiaobo Wu Ivan Ching-Ho Ko Cindy Yeuk-Lam Hong Samuel Chi-Hang Yee jeremy Yuen-Chun Teoh Samson Yun-Sang Chan Ho-Man Tam Chi-Kwok Chan Chi-Fai Ng Peter Ka-Fung Chiu SH Ho Urology Centre Department of SurgeryFaculty of MedicineThe Chinese University of Hong KongHong KongChina

This study aimed to report the outcomes of active surveillance(AS)in the management of low-risk prostate cancer(PCa).It recruited87 men who were prospectively followed up according to the Prostate Cancer Research International Active Surveillance(PRIAS)protocol with local adaptation at SH Ho Urology Centre,Prince of Wales Hospital,Hong Kong,*** investigated the predictorsof disease progression and found that baseline prostate-specific antigen density(PSAD)and the presence of the highest ProstateImaging-Reporting and Data System(PI-RADS)score 5 lesion on magnetic resonance imaging(MRI)are significantly correlatedwith disease ***,men with PSAD>0.2 ng ml^(−2)or PI-RADS 4 or 5 lesions had significantly worse upgradingfree survival compared to those with PSAD≤0.2 ng ml−2 and PI-RADS 2 or 3 *** study concludes that AS is a safe andeffective management strategy for selected patients to defer radical treatment and that most disease progression can be detectedafter the first repeated *** combination of PSAD>0.2 ng ml^(−2)and PI-RADS 4 or 5 lesions may serve as a useful predictorof early disease progression and provide a guide to optimize follow-up protocols for men in different risk groups.

关键词： active surveillance cohort localized prostate cancer

Capturing CO2 Emissions in the George C. Wallace Tunnel: A Case Study

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Intelligent Control and Automation 2024年第3期15卷 83-94页

作者： Gabe Canitz Cole Ciesta Klint Green Justin Sanders Jason Valencia jeremy Willingham Daniel Fonseca Department of Mechanical Engineering The University of Alabama Tuscaloosa AL USA

This paper describes the design of a ventilation system to be paired with a carbon capture system. The ventilation system utilizes the geometry of the George C. Wallace tunnel, located in the City of Mobile, Alabama, USA to capture and redirect emissions to a direct air capture (DAC) device to sequester 25% of the total CO2 mass generated from inside the tunnel. The total CO2 mass rate for the westbound traffic between the week-day hours of 7 a.m. and 6 p.m. has been estimated between 2,300 to 3,000 lbs./hr. By sequestering these emissions, the overall surrounding air quality was shown to be improved to a level that mirrors that from the pre-US industrial era of 270 ppm.

关键词： CO2 Capture Tunnel Ventilation Air Flow Analysis Jet Fan Sizing

为歌剧盛装打扮去听高音演唱一定要穿高级时装?

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

空中英语教室（高级版．彭蒙惠英语） 2024年第8期 14-15,41,42页

作者： jeremy Reynolds 不详

在英国皇家歌剧院看到的观众和观赏匹兹堡歌剧团表演的观众有所不同。在英国皇家歌剧院,处处充斥着浮华光鲜的贵气。在灯光的映衬下,燕尾服的缎面翻领和钻石耳环耀眼夺目,多层大厅无处不在的玻璃和镜子闪闪发亮——这里就是一个看与被... 详细信息

在英国皇家歌剧院看到的观众和观赏匹兹堡歌剧团表演的观众有所不同。在英国皇家歌剧院,处处充斥着浮华光鲜的贵气。在灯光的映衬下,燕尾服的缎面翻领和钻石耳环耀眼夺目,多层大厅无处不在的玻璃和镜子闪闪发亮——这里就是一个看与被看的炫耀空间。

关键词：高级时装闪闪发亮耀眼夺目看与被看翻领燕尾服匹兹堡钻石

Performance in the Fundamentals of Laparoscopic Surgery: Does it reflect global rating scales in the Objective Structured Assessment of Technical Skills in porcine laparoscopic surgery?

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Asian Journal of Urology 2024年第3期11卷 443-449页

作者： Ho Yee Tiong Wei Zheng So jeremy Yuen-Chun Teoh Shuji Isotani Gang Zhu Teng Aik Ong Eddie Shu-Yin Chan Peggy Sau-Kwan Chu Kittinut Kijvikai Ming Liu Bannakji Lojanapiwat Michael Wong Anthony Chi-Fai Ng Yong Loo Lin School of Medicine Department of SurgeryNational University of SingaporeSingapore S.H.Ho Urology Centre Department of SurgeryThe Chinese University of Hong KongHong KongChina Department of Urology Juntendo University Graduate School of MedicineTokyoJapan Department of Urology National University HospitalSingapore Department of Urology Beijing United Family HospitalBeijingChina Department of Surgery University of Malaya Specialist CentreKuala LumpurMalaysia Division of Urology Department of SurgeryTuen Mun HospitalHong Kong Department of Urology Ramathibodi HospitalMahidol UniversitySalayaThailand Department of Urology Beijing HospitalBeijingChina Department of Urology Chiangmai Ram HospitalChiang MaiThailand International Urology Fertility&Gynaecology CentreSingapore

Objective:To correlate the utility of the Fundamentals of Laparoscopic Surgery(FLS)manual skills program with the Objective Structured Assessment of Technical Skills(OSATS)global rating scale in evaluating operative ***:The Asian Urological Surgery Training and Educational Group(AUSTEG)Laparoscopic Upper Tract Surgery Course implemented and validated the FLS program for its usage in laparoscopic surgical ***’basic laparoscopic skills were assessed using three different training models(peg transfer,precision cutting,and intra-corporeal suturing).They also performed live porcine laparoscopic surgery at the same *** surgery skills were assessed by blinded faculty using the OSATS rating ***:From March 2016 to March 2019,a total of 81 certified urologists participated in the course,with a median of 5 years of post-residency *** differences in task time did not reach statistical significance,those with more surgical experience were visibly faster at completing the peg transfer and intra-corporeal suturing FLS ***,they took longer to complete the precision cutting task than participants with less *** OSATS scores correlated weakly with all three FLS tasks(peg transfer time:r=0.331,r^(2)=0.110;precision cutting time:r=0.240,r^(2)=0.058;suturing with intracorporeal knot time:r=0.451,r^(2)=0.203).Conclusion:FLS task parameters did not correlate strongly with OSATS globing rating scale *** FLS task models demonstrated strong validity,it is important to assimilate the inconsistencies when benchmarking technical proficiency against real-life operative competence,as evaluated by FLS and OSATS,respectively.

关键词： TheFundamentalsof Laparoscopic Surgery The Objective Structured Assessment of Technical Skills Laparoscopic training Surgical education Surgical training Urological laparoscopic surgery

Comment on: Effect of intubation in patients with functional epiphora after endoscopic dacryocystorhinostomy

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Ophthalmology(English edition) 2024年第8期17卷 1576-1576页

作者： Mansooreh Jamshidian-Tehrani Hossein Ghahvehchian Christopher J Compton jeremy D Clark Nicole L West Mohsen Bahmani Kashkouli Department of Ophthalmology Eye Research CenterThe Five Senses Health InstituteRassoul Akram HospitalIran University of Medical SciencesTehran ***Iran Department of Ophthalmology and Visual Sciences University of Louisville School of MedicineLouisville 40202KentuckyUSA

Dear Editor,We read with interest the article by Han et al[1]in which they retrospectively assessed the effect of bicanalicular intubation for functional epiphora after a failed endoscopic dacryocystorhinostomy(DCR).They confirmed the post-DCR“functional obstruction”based on fluorescein dye disappearance(FDDT)and irrigation test[1].

关键词： intubation assessed endoscopic

Utilization of RNA sequencing to investigate olfactory dysfunction in chronic rhinosinusitis without nasal polyps:A pilot study

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Otorhinolaryngology-Head and Neck Surgery 2024年第1期10卷 29-36页

作者： Jorge A.Gutierrez III jeremy L.Barth Rodney J.Schlosser Thomas S.Edwards Timothy L.Smith Zachary M.Soler Department of Otolaryngology-Head and Neck Surgery Medical University of South CarolinaCharlestonSouth CarolinaUSA Department of Regenerative Medicine&Cell Biology Medical University of South CarolinaCharlestonSouth CarolinaUSA Department of Otolaryngology-Head and Neck Surgery Oregon Health&Science UniversityPortlandOregonUSA

Objectives:Prior research on olfactory dysfunction in chronic rhinosinusitis(CRS)has focused on patients with polyps and suggests that direct inflammation of the olfactory cleft mucosa plays a contributory *** purpose of this study was to evaluate gene expression in superior turbinate mucosal specimens,comparing normosmic and dysosmic CRS patients without polyps(CRSsNP).Methods:Tissue samples were obtained from the superior turbinates of patients with CRSsNP at the time of endoscopic sinus *** subsequently underwent RNA sequencing and functional analysis to investigate biological pathways associated with differentially expressed genes between dysosmic(n=7)and normosmic(n=4)***:Differential gene expression analysis comparing dysosmic and normosmic CRSsNP patients showed upregulation of 563 genes and downregulation of 327 *** stringent criteria for multiple comparisons,one upregulated gene(Immediate Early Response 3[IER3])had an false discovery rate(FDR)correction adjustedP value considered statistically significant(P<0.001,fold change 2.69).Reactome functional analysis revealed eight biological pathways significantly different between dysosmic and normosmic patients(P<0.05,FDR correction)including IL-4 and IL-13 signaling,IL-10 signaling,and rhodopsin-like ***:RNA sequencing of the superior turbinates in patients with CRSsNP can provide valuable information regarding biological pathways and genes involved in olfactory *** study supports literature suggesting that Type 2 inflammation may play a role in olfactory dysfunction in at least some patients with *** study also prompts questions regarding the role of IL-10,rhodopsin-like receptors,andIER3 in the pathogenesis of olfactory dysfunction.

关键词： chronic rhinosinusitis without nasal polyps olfactory dysfunction RNA sequencing

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

进步时代到韧性时代的大转型

清华大学教育研究 2024年第1期45卷 1-5页

作者：杰里米·里夫金张婧妍(译) 赵琳(校) 华盛顿特区经济趋势基金会美国清华大学教育研究院北京100084

病毒频频来袭,气候持续变暖,地球正趋于再野化(Rewild)。长久以来,人类骄傲地认为可以迫使自然界适应我们这个物种,如今却发现,人类面临着的是被迫适应这个捉摸不透的自然界的“羞耻”命运。对于发生在周遭的混乱不安,我们仍时常毫无对策。

关键词：进步时代羞耻对策