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Plasmon-induced dual-wavelength operation in a Yb^(3+) laser

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Light(Science & Applications) 2019年第1期8卷 1042-1050页

作者： Laura Sanchez-Garcia Mariola O.Ramirez Rosa Maria Sole joan j.carvajal Francesc Diaz Luisa E.Bausa Deparment Fisica de Materiales Instituto Nicolas Cabrera and Condensed Matter Physics Center(IFIMAC)Universidad Autonoma de Madrid28049 MadridSpain Universitat Rovira i Virgili Departament Quimica Fisica i InorganicaFisica i Cristal·lografia de Materials i Nanomaterials(FiCMA-FiCNA)-EMaSE-43007 TarragonaSpain

Expanding the functionalities of plasmon-assisted lasers is essential for emergent applications in nanoscience and ***,we report on a novel ability of plasmonic structures to induce dual-wavelength lasing in the near-infrared region in a Yb^(3+) solid-state *** means of the effects of disordered plasmonic networks deposited on the surface of a Yb^(3+)-doped nonlinear RTP crystal,room-temperature dual-wavelength lasing,with a frequency difference between the lines in the THz range,is *** dual-wavelength laser is produced by the simultaneous activation of two lasing channels,namely,an electronic-and a phonon-terminated laser *** latter is enabled by the out-of-plane field components that are generated by the plasmonic structures,which excite specific Raman ***,multiline radiation at three different wavelengths is demonstrated in the visible spectral region via two self-frequency conversion processes,which occur in the vicinities of the plasmonic *** results demonstrate the potential of plasmonic nanostructures for inducing drastic modifications in the operational mode of a solid-state laser and hold promise for applications in a variety of fields,including multiplexing,precise spectroscopies,and THz radiation generation via a simple and cost-effective procedure.

关键词： laser lasing dual

Assembly and electrochemical testing of renewable carbon-based anodes in SIBs:A practical guide

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journal of Energy Chemistry 2022年第12期75卷 457-477,I0012页

作者： Darío Alvira Daniel Antorán joan jManyà Aragón Institute of Engineering Research(I3A) Thermochemical Processes GroupUniversity of ZaragozaEscuela Politécnica Superior22071 HuescaSpain

Sodium-ion batteries(SIBs)are considered as a promising candidate to replace lithium-ion batteries(LIBs)in large-scale energy storage *** sodium resources and similar working principles make this technology attractive to be implemented in the near ***,the development of high-performance carbon anodes is a focal point to the upcoming success of SIBs in terms of power density,cycling stability,and *** knowledge in electrochemical and physicochemical techniques is required to properly evaluate the anode performance and move it in the right *** review aims at providing a comprehensive guideline to help researchers from different backgrounds(e.g.,nanomaterials and thermochemistry)to delve into this *** main components,lab configurations,procedures,and working principles of SIBs are ***,a detailed description of the most used electrochemical and physicochemical techniques to characterize electrochemically active materials is provided.

关键词： Sodium-ion battery Anode Hard carbon Electrochemical techniques Carbon characterization

Prediction of environment variables in precision agriculture using a sparse model as data fusion strategy

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Information Processing in Agriculture 2022年第2期9卷 171-183页

作者： L.Mancipe-Castro R.E.Gutierrez-carvajal Multimedia Engineering Program/Universidad Militar Nueva Granada Bogota 110111Colombia

Precision agriculture seeks to optimize production processes by monitoring and analyzingenvironmental variables. For example, establishing farming actions on the crop requiresanalyzing variables such as temperature, ambient humidity, soil moisture, solar irradiance,and Rainfall. Although these signals might contain valuable information, it is vital to mixup the monitored signals and analyze them as a whole to provide more accurate information than analyzing the signals separately. Unfortunately, monitoring all these variablesresults in high costs. Hence it is necessary to establish an appropriate method that allowsthe infer variables behavior without the direct measurement of all of *** paper introduces a multi-sensor data fusion technique, based on a sparse representation, to find the most straightforward and complete linear equation to predict and understand a particular variable behavior based on other monitored environmental variablesmeasurements. Moreover, this approach aims to provide an interpretable model that allowsunderstanding how these variables are combined to achieve such results. The fusion strategy explained in this manuscript follows a four-step process that includes 1. data cleaning,2. redundant variable detection, 3. dictionary generation, and 4. sparse regression. Thealgorithm requires a target variable and two highly correlated signals. It is essential to pointout that the developed method has no restrictions to specific variables. Consequently, it ispossible to replicate this method for the semiautomatic prediction of multiple critical environmental *** a case study, this work used the SML2010 data set of the UCI machine learning repository to predicted the humidity’s derivative trend function with an error rate lower than 17%and a mean absolute error lower than 6%. The experiment results show that even thoughsparse model predictions might not be the most accurate compared to those of linearregression (LR), support vector m

关键词： Precision agriculture Multi-sensor data fusion Sparse representation Inference of variables Humidity

脊髓切片中运动神经元的膜片箝技术研究:一种分析药物作用的高效工具(英文)

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Acta Pharmacologica Sinica 2000年第6期21卷 29-37页

作者： joan j KENDIG CA 94305 Department of Anesthesia Stanford University School of Medicine USA

AIM: To develop a tool for detailed analysis of spirally acting anesthetic and analgesic agents. METHODS: Studies were done on visually identified motor neurons in 400 uuuuuuuum thick spinal cord slices from 14-23 d old rats using patch clamp techniques. Ethanol was used as a prototype general anesthetic agent. RESULTS: Cell bodies in the ventrolateral horn identified as motor neurons by retrograde fluorescent labeling had a mean dimension of 32 ± 5 /Mm (x ± s, n = 25). Mean resting potential was - 62. 8 ± 2. 4 mV; input resistance was 44±24 MΩ (n = 19). Threshold was -44± 7 mV, and action potential amplitude 101 ± 9 mV from baseline. Ethanol concentrations at and below 50-200 mmol/L decreased motor neuron excitability to the injected current; there was no effect on resting potential, but a variable reversible increase in input resistance. Ethanol re-versibly depressed the excitatory postsynaptic potential, with a dose-response relationship similar to that previously observed for the population e

关键词：脊髓运动神经元乙醇醇类全身麻醉突触后机制

Quantifying water quality and flow in multi-branched urban estuaries for a rainfall event with mass balance method

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Water Science and Engineering 2020年第4期13卷 317-328页

作者： joan Cecilia Casila Gubash Azhikodan Katsuhide Yokoyama College of Engineering and Agro-Industrial Technology University of the Philippines Los BanosLos Banos 4031Philippines Department of Civil and Environmental Engineering Tokyo Metropolitan UniversityTokyo 192-0397Japan

In this study,field observations were conducted after a heavy rainfall event in the Sumida and Shakujii rivers in Tokyo,*** flow dynamics and fluxes of salt,suspended sediment(SS),and dissolved oxygen(DO)were investigated with the mass balance *** fractions of fresh water and saltwater in seaward and landward flows were *** maximum salt flux in the Shakujii River was 53.8 kg/s during the flood tide,and those in the Sumida River were 680.3 kg/s at the upstream station and 703.7 kg/s at the downstream *** trends of SS and DO fluxes were similar in both *** the Shakujii River,the highest SS(3.1 kg/s)and DO(0.4 kg/s)fluxes appeared during the flood tide after *** the Sumida River,the maximum SS fluxes(6.1 and 6.3 kg/s at the upstream and downstream stations,respectively)and DO fluxes(1.15 and 1.21 kg/s at the upstream and downstream stations,respectively)appeared during the ebb *** mass balance method was used to estimate discharge,salinity,SS concentration,and DO concentration at a station with missing *** results show that the estimated salinity and SS concentration had a significant correlation with the on-site observations,with correlation coefficients(R)of 0.950 and 0.835,respectively,but not for DO concentration(R?0.638).The disparity between the computed and measured data may be explained by the differences in velocity,salinity,topography,sedimentation,and the presence of organic *** analysis based on the advective salt transport components found a lower salt flux per unit width in the Shakujii River(0.36 kg/(m·s))in comparison with that in the Sumida River(2.88 kg/(m·s)).This indicates a higher probability for salt retention in the Shakujii River.©2020 Hohai *** and hosting by Elsevier *** is an open access article under the CC BY-NC-ND license(http://***/licenses/by-nc-nd/4.0/).

关键词： Mass balance Water quality Flow Salt transport Sumida River Shakujii River Estuary

Roadmap for Managing SARS-CoV-2 and Other Viruses in the Water Environment for Public Health

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Engineering 2022年第5期8卷 139-144页

作者： Gang Liu jiuhui Qu joan Rose Gertjan Medema Key Laboratory of Drinking Water Science and Technology Research Centre for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China Department of Fisheries and Wildlife Michigan State UniversityEast LansingMI 48823USA KWR Water Research Institute Nieuwegein 3433 PENetherlands Sanitary Engineering Department of Water ManagementFaculty of Civil Engineering and GeosciencesDelft University of TechnologyDelft 2628 CNNetherlands

The water sector needs to address viral-related public health issues,because water is a virus carrier,which not only spreads viruses(e.g.,via drinking water),but also provides information about the circu-lation of viruses in the community(e.g.,via sewage).It has been widely reported that waterborne viral pathogens are abundant,diverse,complex,and threatening the public health in both developed and developing ***,there is great potential for viral monitoring that can indicate biosafety,treatment performance and community *** developments in technology have been rising to meet the emerging challenges over the past *** the current coronavirus disease 2019(COVID-19)pandemic caused by severe acute respiratory syndrome coronavirus 2(SARS-CoV-2),the world’s attention is directed to the urgent need to tackle the most challenging public health issues related to waterborne *** on critical analysis of the water viral knowledge progresses and gaps,this article offers a roadmap for managing COVID-19 and other viruses in the water environments for ensur-ing public health.

关键词： Virus Water environment Viral indicators Sewage surveillance Biosafety

Bulbocavernosus muscle area as a novel marker for hypogonadism

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Asian journal of Urology 2017年第1期4卷 3-9页

作者： Nikhil Gupta Maria carvajal Michael jurewicz Bruce R.Gilbert Hofstra-Northwell School of Medicine Smith Institute for UrologyNew Hyde ParkNYUSA

Objective:Late-onset hypogonadism,or androgen deficiency in the aging male,is a significant cause of morbidity in older *** men in the low normal or equivocal range for low testosterone level exhibit signs and symptoms of *** testosterone is an imperfect maker for hypogonadism as symptoms vary greatly within the low to low normal range in addition to variations among testosterone *** ultrasound can be effectively used to examine the bulbocavernosus muscle(BCM),an androgenized tissue that may be impacted by androgen receptor ***:This study was a retrospective analysis of men who underwent perineal ultrasound for *** ultrasound data were used to calculate the area of the BCM and correlate it with indices of hypogonadismin symptomatic men including free and total testosterone and dual-energy X-ray absorptiometry(DEXA).Results:The results demonstrate that there is a significant correlation between total and free testosterone and BCM area in hypogonadal *** between BCM area and total testosterone showed R^2=0.061 and p=0.0187 and comparison between BCM area and free testosterone showed R^2=0.0957 and p=*** addition,low BCM was also correlated with DEXA results showing osteoporosis and osteopenia(R^2=0.2239,p=0.0027).Conclusion:There has been recent controversy over the safety of testosterone replacement *** might be particularly important in men with hypogonadal symptoms but a low normal testosterone *** study investigated the use of perineal ultrasound to measure BCM as a surrogate marker for poor androgenized men presenting with hypogonadism.

关键词： Testosterone replacement therapy Hypogonadism Bulbocavernosus Bulbospongiosus Perineal ultrasound DEXA DXA

Numerical simulation of a short flexible pipe subject to forced motion and vortex-induced vibration

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Acta Oceanologica Sinica 2009年第6期28卷 70-83页

作者： CHEN Zhengshou KIM Wu-joan CHOI Yoon-rak Engineering College Ocean University of China Qingdao 266100 China Department of Naval Architecture ＆ Marine Engineering Mokpo National University Mokpo534-729 Korea School of Naval Architecture ＆ Ocean Engineering University of Ulsan Ulsan 680-749 Korea

A series of numerical sinmlations about a small scale （aspect ratio： 63.2） flexible pipe undergoing forced harmonious oscillation and vortex-induced vibration （VIV） have been taken into account. The wake hydrodynamics and pipe deformation were accomplished by ANSYS MFX solution strat- egy designed for fluid-structure interaction （FSI） problem with well-performed LES model. The configuration of structured mesh, multi-domain design, different mesh stiffness admeasured by User Fortran ensured that the numerical task was competent to deal with large deformation related to this case. The introduction of instantaneous amplitude definition and modeless component decom- position method （Chen and Kim, 2008） was helpful to reveal much more information from modal analysis. Most results from numerical simulation are generally consistent with those from model test （Choi and Hong, 2000） via the comparison between them. As supplementary to model test, visualization of the vortex wake was also provided. It has been proved that the forced oscillation doesn＇t only excite a complicated dumbbell-like wake pattern around the outer thimble, but also results in inner flow inside the PVC pipe. The velocity of the inner flow increases with the frequency of forced oscillation.

关键词： force oscillation vortex-induced vibration (VIV) fluid-structure interaction (FSI) ANAYS MFX instantaneous amplitude

Analysis of a ten step protocol to decrease postoperative spinal wound infections

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World journal of Orthopedics 2018年第11期9卷 271-284页

作者： Hossein Elgafy Craig j Raberding Megan L Mooney Kyle A Andrews joan M Duggan Department of Orthopedics and Infectious Diseases University of Toledo Medical Center

AIM To define a ten-step protocol that reduced the incidence of surgical site infection in the spine surgery practice of the senior author and evaluate the support for each step based on current *** In response to unexplained increased infection rates at our institution following spine surgery,a ten-step protocol was implemented:(1) preoperative glycemic management based on hemoglobin A1 c(HbA1 c);(2) skin site preoperative preparation with 2% chlorhexidine gluconate disposable cloths;(3) limit operating room traffic;(4) cut the number of personnel in the room to the minimum required;(5) absolutely no flash sterilization of equipment;(6) double-gloving with frequent changing of outer gloves;(7) local application of vancomycin powder;(8) re-dosing antibiotic every 4 h for prolonged procedures and extending postoperative coverage to 72 h for high-risk patients;(9) irrigation of subcutaneous tissue with diluted povidone-iodine solution after deep fascial closure; and(10) use of Dura Prep skin preparation at the end of a case before skin closure. Through an extensive literature review,the current data available for each of the ten steps was *** Use of vancomycin powder in surgical wounds,routine irrigation of surgical site,and frequent changing of surgical gloves are strongly supported by the literature. Preoperative skin preparation with chlorhexidine wipes is similarly supported. The majority of current literature supports control of HbA1 c preoperatively to reduce risk of infection. Limiting the use of flash sterilization is supported,but has not been evaluated in spine-specific surgery. Limiting OR traffic and number of personnel in the OR are supported although without level 1 evidence. Prolonged use of antibiotics postoperativelyis not supported by the literature. Intraoperative use of Dura Prep prior to skin closure is not yet *** The ten-step protocol defined herein has significantly helped in decreasing surgical site

关键词： Wound infections Spine Ten step protocol Surgical site infections