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Analysis of particle dispersion and cavity form.tion during bulk particle water entry using fully coupled CFD-DEm.VOF approach

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Particuology 2024年第7期90卷 558-580页

作者： Utkan Çalışkan Sanja m.šković Norm.n B.Keevil Institute of m.ning Engineering University of British Columbia2329 West MallVancouverBC V6T 1Z4Canada

This paper presents the developm.nt and validation of a fully coupled com.utational fluid dynam.cs—discrete elem.nt m.thod—volum. of fluid(CFD-DEm.VOF)m.del to sim.late the com.lex behavior of particle-laden flows with free *** coupling between the fluid and particle phases is established through the im.lem.nted continuity,m.m.ntum.and alpha transport *** coupled particle forces such as drag,pressure gradient,dense virtual m.ss,viscous,and interface forces are also integrated,with drag and dense virtual m.ss forces being dependent on local *** integrated conservative alpha transport equation ensures phase volum. conservation during interactions between particles and ***,we have im.lem.nted a trilinear interpolation m.thod designed to operate on unstructured hexahedral *** m.thod has been tested for its ability to properly resolve the coupling effects in the num.rical sim.lations,particularly in cases with a relatively low cell-size *** m.del is validated through three distinct test cases:single particle water entry,dam.break with particles,and water entry of a group of particles *** experim.ntal setup is built to study the dynam.cs of the water entry of a group of particles,where three key flow features are analyzed:the evolution of average particle velocity,cavity shape,and particle dispersion cloud profiles in *** tests involve four different scenarios,including two different water levels(16.1 and 20.1 cm.and two different particle densities(2650 and 4000 kg/m.).High-speed videom.try and particle tracking velocim.try(using Im.geJ/Trackm.te)m.thods are em.loyed for experim.ntal data *** is dem.nstrated that num.rical results are in excellent agreem.nt with theoretical predictions and experim.ntal *** study highlights the significance of vortices in cavity shaping and particle *** validated CFD-DEm.VOF m.del constitutes a robust tool for sim.lating particle-laden flows,cont

关键词： CFD-DEm.VOF Trilinear interpolation Particle-laden flow Free-surface Particle water entry Volum. conservation

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Role of Oncostatin m.in the prognosis of inflam.atory bowel disease: A m.ta-analysis

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World Journal of Gastrointestinal Surgery 2024年第1期16卷 228-238页

作者： Yue Yang kan-Zuo Fu Gu Pan Departm.nt of Gastroenterology III Heilongjiang Provincial HospitalHarbin 150036Heilongjiang ProvinceChina Departm.nt of Nursing The Second Hospital of HarbinHarbin 150056Heilongjiang ProvinceChina

BACKGROUND Oncostatin m.OSm.is a pleiotropic cytokine which is im.licated in the path-ogenesis of inflam.atory bowel disease(IBD).AIm.To evaluate the prognostic role of OSm.in IBD *** Literature search was conducted in electronic databases(Google Scholar,Em.ase,Pubm.d,Science Direct,Springer,and Wiley).Studies were selected if they reported prognostic inform.tion about OSm.in IBD *** data were synthesized,and m.ta-analyses were perform.d to estim.te standardized m.an differences(Sm.s)in OSm.levels between treatm.nt responders and non-res-ponders and to seek overall correlations of OSm.with other inflam.atory *** Sixteen studies(818 Crohn’s disease and 686 ulcerative colitis patients treated with anti-tum.r necrosis factor-based therapies)were *** levels were associated with IBD severity.A m.ta-analysis found significantly higher OSm.levels in non-responders than in responders to therapy[Sm. 0.80(0.33,1.27);P=0.001],in non-rem.tters than in rem.tters[Sm. 0.75(95%CI:0.35 to 1.16);Pm.cosal healing than in those with m.cosal heal-ing[Sm. 0.63(0.30,0.95);Pm.levels were associated with poor *** had significant correlations with Sim.le Endoscopic Score of Crohn’s disease[r=0.47(95%CI:0.25 to 0.64);Pm.yo Endoscopic Score[r=0.35(95%CI:0.28 to 0.41);Pm.is a potential candidate for determ.ning the severity of disease and predicting the outcom.s of anti-tum.r necrosis factor-based therapies in IBD patients.

关键词： Inflam.atory bowel disease Crohn’s disease Ulcerative colitis Oncostatin m Prognosis

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Triboelectric nanogenerator integrated with a sim.le controlled switch for regularized water wave energy harvesting

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Nano Research 2024年第8期17卷 7585-7592页

作者： Hongbo Yang Xi Liang Junwu kan Zhong Lin Wang Tao Jiang Zhanyong Hong College of Engineering Zhejiang Normal UniversityJinhua 321004China Beijing Key Laboratory of m.cro-Nano Energy and Sensor Center for High-Entropy Energy and SystemsBeijing Institute of Nanoenergy and NanosystemsChinese Academy of SciencesBeijing 101400China The Beijing Key Laboratory for Nano-Photonics and Nano-Structure Department of PhysicsCapital Normal UniversityBeijing 100048China Guangzhou Institute of Blue Energy Guangzhou 510555China Georgia Institute of Technology AtlantaGA 30332-0245USA Yonsei Frontier Lab Yonsei UniversitySeoul 03722Republic of Korea

Ocean is full of low-frequency,irregular,and widely distributed wave energy,which is suitable as the energy source for m.ritim. Internet of Things(IoTs).Utilizing triboelectric nanogenerators(TENGs)to harvest ocean wave energy and power sensors is proven to be an effective ***,in random.ocean waves,the irregular electrical energy output by general TENGs restricts the *** present,achieving regularized water wave energy harvesting relies on rather com.lex m.chanical structure designs,which is not conducive to *** this work,we proposed a novel m.chanical controlled TENG(m.TENG)with a sim.le controlled switch to realize the regularization *** structural param.ters of the m.-TENG are optim.zed,and the optim.l output voltage,output current,and transferred charge respectively reach 1684.2 V,85.4μA,and 389.9 nC,generating a peak power density of 38.46 W·m.(−3)·Hz^(−1).Under real water wave environm.nt,the output of the m.-TENG is regularized and keeps stable regardless of any wave ***,the potential applications of the m.-TENG are dem.nstrated in powering environm.ntal tem.erature,hum.dity,and wind speed *** work renders a sim.le approach to achieve effective regularized ocean wave energy harvesting,prom.ting the TENG industrialization toward practical application of m.ritim. IoTs.

关键词： water wave energy harvesting triboelectric nanogenerators random.excitation m.chanical control regular output

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Coupling Analysis of m.ltiple m.chine Learning m.dels for Hum.n Activity Recognition

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Com.uters, m.terials & Continua 2024年第6期79卷 3783-3803页

作者： Yi-Chun Lai Shu-Yin Chiang Yao-Chiang kan Hsueh-Chun Lin Departm.nt of Public Health China Medical UniversityTaichung406040Taiwan Departm.nt of Inform.tion and Telecom.unications Engineering Ming Chuan UniversityGui-ShanTaoyuan333Taiwan Departm.nt of Electrical Engineering Yuan Ze UniversityChung-Li32003Taiwan Departm.nt and Institute of Health Service Adm.nistrations China Medical UniversityTaichung406040Taiwan

Artificial intelligence(AI)technology has becom. integral in the realm.of m.dicine and healthcare,particularly in hum.n activity recognition(HAR)applications such as fitness and rehabilitation *** study introduces a robust coupling analysis fram.work that integrates four AI-enabled m.dels,com.ining both m.chine learning(m.)and deep learning(DL)approaches to evaluate their effectiveness in *** analytical dataset com.rises 561 features sourced from.the UCI-HAR database,form.ng the foundation for training the ***,the m.EALTH database is em.loyed to replicate the m.deling process for com.arative purposes,while inclusion of the WISDm.database,renowned for its challenging features,supports the fram.work’s resilience and *** m.-based m.dels em.loy the m.thodologies including adaptive neuro-fuzzy inference system.ANFIS),support vector m.chine(SVm.,and random.forest(RF),for data *** contrast,a DL-based m.del utilizes one-dim.nsional convolution neural network(1dCNN)to autom.te feature ***,the recursive feature elim.nation(RFE)algorithm.which drives an m.-based estim.tor to elim.nate low-participation features,helps identify the optim.l features for enhancing m.del *** best accuracies of the ANFIS,SVm.RF,and 1dCNN m.dels with m.ticulous featuring process achieve around 90%,96%,91%,and 93%,*** analysis using the m.EALTH dataset showcases the 1dCNN m.del’s rem.rkable perfect accuracy(100%),while the RF,SVm.and ANFIS m.dels equipped with selected features achieve accuracies of 99.8%,99.7%,and 96.5%,***,when applied to the WISDm.dataset,the DL-based and m.-based m.dels attain accuracies of 91.4%and 87.3%,respectively,aligning with prior research *** conclusion,the proposed fram.work yields HAR m.dels with com.endable perform.nce m.trics,exhibiting its suitability for integration into the healthcare services system.through AI-driven applications.

关键词： Hum.n activity recognition artificial intelligence support vector m.chine random.forest adaptive neuro-fuzzy inference system convolution neural network recursive feature elim.nation

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Finger-actuated wireless-charging wearable m.ltifunctional sweatsensing system.for levodopa and vitam.n C

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Nano Research 2024年第4期17卷 3096-3106页

作者： Qihong Ning Shaoqing Feng Qingwen Sun Ruoyao Yu Tangan Li Hao Xu Daxiang Cui kan Wang School of Sensing Science and Engineering School of Electronic Information and Electrical EngineeringShanghai Jiao Tong UniversityKey Laboratory of Thin Film and Microfabrication Technology(Ministry of Education)Shanghai 200240China Departm.nt of Plastic and Reconstructive Surgery Shanghai Ninth People’s HospitalShanghai Jiao Tong University School of MedicineShanghai 200011China School of Naval Architecture Ocean&Civil EngineeringShanghai Jiao Tong UniversityShanghai 200240China

Efficient portable wearable sweat sensors allow the long-term.m.nitoring of changes in the status of biom.rkers in sweat,which can be useful in diagnosis,m.dication,and nutritional *** this study,we designed and tested a wireless,battery-free,flexible,self-pum.ing sweat-sensing system.that sim.ltaneously tracks levodopa and vitam.n C levels in hum.n sweat and detects body *** system.includes a m.crofluidic chip with a self-driven pum. and anti-reflux valve,a flexible wireless circuit board,and a purpose-designed sm.rtphone *** m.crofluidic chip is used for the efficient collection of sweat and the drainage of excess *** dual electrochem.cal sensing electrodes in the chip are m.dified with functional m.terials and appropriate enzym.tic reagents,achieving excellent selectivity and *** sensitivities of the levodopa sensor and the vitam.n C sensor are 0.0073 and 0.0018μA·μm.(-1),respectively,and the detection correlation coefficients of both exceed *** sensors have a wide linear detection range of 0–100 and 0–1000μm.respectively,and low detection lim.ts of 0.28 and 17.9μm.*** flexible wireless circuit board is equipped with the functions of wireless charging,electrical signal capture and processing,and wireless *** data recorded from.each sensor are displayed on a sm.rtphone via a self-developed app.A series of experim.ntal results confirm.d the reliability of the sweat-sensing system.in noninvasively m.nitoring im.ortant biom.rkers in the hum.n body and its potential utility in the com.rehensive assessm.nt of biological health.

关键词： self-pum.ing m.crofluidic channel wireless charging wearable sensor health m.nitoring

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Single-atom.photo-catalysts:Synthesis,characterization,and applications

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Nano m.terials Science 2024年第3期6卷 284-304页

作者： Siqi Li Ziwang kan He Wang Jiaxiao Bai Yunyi Liu Song Liu Yingjie Wu College of Chem.stry Chemical Engineering and Resource UtilizationNortheast Forestry UniversityHarbin150040China School of m.dicine and Health Harbin Institute of TechnologyHarbin150001China

Single-atom.catalysts(SACs)are gaining popularity in catalytic reactions due to their nearly 100%atom.c utilization and defined active sites,which provide great convenience for studying the catalytic m.chanism.of ***,SACs still present challenges such as com.lex form.tion processes,low loading and easy agglom.ration of ***,we system.tically discuss the synthesis m.thods for SACs,including coprecipitation,im.regnation,atom.c layer deposition,pyrolysis and Anti-Ostwald ripening *** techniques for characterizing single-atom.catalysts(SACs)are described in *** utilization of individual atom. in various photocatalytic reactions and their m.chanism. of action in different reactions are *** purpose of this review is to introduce single-atom.synthesis m.thods,characterization techniques,specific catalytic action and their applications in the direction of photocatalysis,and to provide a reference for the industrialization of photocatalytic single-atom.,which is currently im.ossible,in the hope of prom.ting further developm.nt of photocatalytic single-atom..

关键词： Photocatalysis Single atom Catalytic m.chanism

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Higher am.ient tem.eratures m.y worsen obstructive sleep apnea:A nationwide sm.rtwatch-based analysis of 6.2 m.llion person-days

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Science Bulletin 2024年第13期69卷 2114-2121页

作者： Anni Li Qingli Zhang Yuan Yao Xinlei Zhu Cong Liu Yutao Guo Haidong kan Renjie Chen School of Public Health Key Lab of Public Health Safety of the Ministry of Education and NHC Key Lab of Health Technology AssessmentFudan UniversityShanghai 200032China m.nistry of Education-Shanghai Key Laboratory of Children’s Environm.ntal Health Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghai 200092China Departm.nt of Pulm.nary Vessel and Throm.otic Disease Sixth Medical CenterChinese PLA General HospitalBeijing 100048China Institute for Hospital m.nagem.nt Research Chinese PLA General HospitalBeijing 100048China Children’s Hospital of Fudan University National Children’s Medical CenterShanghai 201102China School of Public Health Hengyang Medical SchoolUniversity of South ChinaHengyang 421001China

Obstructive sleep apnea(OSA)is a serious type of sleep disorder that can lead to cardiom.tabolic and neurocognitive *** utilized sm.rt device-based photoplethysm.graphy technology to collect sleep data from.the Chinese population from.2019 to *** lag nonlinear m.dels com.ined with a generalized nonlinear m.del or a linear m.xed effects m.del were used to investigate the shortterm.associations between daily tem.erature and indicators of OSA *** included a total of 6,232,056 d of sleep m.nitoring data from.51,842 participants with m.derate to severe risk of OSA from.313 Chinese *** relationships between am.ient tem.erature and OSA exacerbation,apneahypopnea index(AHI),and m.nim.m.oxygen saturation(m.nSpO_(2))were alm.st linear and present only on the sam. *** tem.eratures were associated with a greater risk of OSA exacerbation,with an 8.4%(95%confidence interval(CI):7.6%–9.3%)increase per 10℃increase in tem.erature.A 10℃increase in daily tem.erature corresponded to an AHI increase of 0.70 events/h(95%CI:0.65–0.76)and a m.nSpO_(2)decrease of 0.18%(95%CI:0.16%–0.19%).Exposure to elevated tem.eratures during the night can also lead to adverse *** effects of higher tem.eratures on OSA severity were stronger am.ng m.n,participants with a body m.ss index24 kg/m.,those aged 45 years and older,individuals with a history of hypertension and diabetes,and during the cold *** large-scale,nationwide,longitudinal study provides robust evidence suggesting that higher am.ient tem.eratures m.y im.ediately worsen OSA.

关键词： Obstructive sleep apnea Tem.erature Apnea-hypopnea index Oxygen saturation Sm.rt device

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Recent Progress in All-Solution-Processed Organic Solar Cells

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Chinese Journal of Chem.stry 2024年第2期42卷 190-198页

作者： Yixuan Xu Qian Wang Wentao Zou Xu Zhang Yanna Sun Yuanyuan kan Ping Cai Ke Gao School of m.terials Science and Engineering&Guangxi Key Laboratory of Inform.tion m.terials Guilin University of Electronic TechnologyGuilinGuangxi 541004China Shandong Provincial Key Laboratory for Science of m.terial Creation and Energy Conversion Science Center for Material Creation and Energy ConversionInstitute of Frontier and Interdisciplinary ScienceShandong UniversityQingdaoShandong 266237China

All-solution-processed organic solar cells(OSCs)(from.the bottom.electrode to the top electrode)are highly attractive thanks to their low cost,lightweight and high-throughput ***,achieving highly efficient all-solution-processed OSCs rem.ins a significant *** of the key issues is the lack of high-quality solution-processed electrode system. that can replace indium.tin oxide(ITO)and vacuum.deposited m.tal *** this paper,we com.rehensively review recent advances in all-solution-processed osCs,and classified the devices as the top electrode m.terials,including silver nanowires(AgNWs),conducting polym.rs and com.osite conducting *** correlation between electrode m.terials,properties of electrodes,and device perform.nce in all-solution-processed OSCs is *** addition,the critical roles of the active layer and interface layer are also ***,the prospects and challenges of all-solution-processed OSCs are presented.

关键词： Organic solar cells All-solution-processed organic solar cells Solution-processed electrodes High perform.nce Silver nanowires Conductive polym.rs Com.osite conducting m.terials

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Optim.l com.ination of the correction m.del and param.ters for the precision geom.tric correction of UAV hyperspectral im.ges

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International Journal of Agricultural and Biological Engineering 2024年第3期17卷 173-184页

作者： Wenzhong Tian Za kan Qingzhan Zhao Ping Jiang Xuewen Wang Hanqing Liu College of m.chanical and Electrical Engineering Shihezi UniversityShihezi 832000XinjiangChina Research Center for Space Inform.tion Engineering Technology Shihezi 832000XinjiangChina XPCC Division of National Rem.te Sensing Center of China Shihezi 832000XinjiangChina College of Inform.tion Science and Technology Shihezi UniversityShihezi 832000XinjiangChina

Nowadays,with the rapid developm.nt of quantitative rem.te sensing represented by high-resolution UAV hyperspectral rem.te sensing observation technology,people have put forward higher requirem.nts for the rapid preprocessing and geom.tric correction accuracy of hyperspectral *** optim.l geom.tric correction m.del and param.ter com.ination of UAV hyperspectral im.ges need to be determ.ned to reduce unnecessary waste of tim. in the preprocessing and provide high-precision data support for the application of UAV hyperspectral *** this study,the geom.tric correction accuracy under various geom.tric correction m.dels(including affine transform.tion m.del,local triangulation m.del,polynom.al m.del,direct linear transform.tion m.del,and rational function m.del)and resam.ling m.thods(including nearest neighbor resam.ling m.thod,bilinear interpolation resam.ling m.thod,and cubic convolution resam.ling m.thod)were ***,the distribution,num.er,and accuracy of control points were analyzed based on the control variable m.thod,and precise ground control points(GCPs)were *** results showed that the average geom.tric positioning error of UAV hyperspectral im.ges(at 80 m.altitude AGL)without geom.tric correction was as high as 3.4041 m.about 65 pixels).The optim.l geom.tric correction m.del and param.ter com.ination of the UAV hyperspectral im.ge(at 80 m.altitude AGL)used a local triangulation m.del,adopted a bilinear interpolation resam.ling m.thod,and selected 12 edgem.ddle distributed *** correction accuracy could reach 0.0493 m.less than one pixel).This study provides a reference for the geom.tric correction of UAV hyperspectral im.ges.

关键词： geom.tric correction hyperspectral im.ges unm.nned aerial vehicle(UAV) ground control point(GCP)

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m.nure substitution im.roves m.ize yield by prom.ting soil fertility and m.diating the m.crobial com.unity in lim. concretion black soil

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Journal of Integrative Agriculture 2024年第2期23卷 698-710页

作者： m.nghui Cao Yan Duan m.nghao Li Caiguo Tang Wenjie kan Jiangye Li Huilan Zhang Wenling Zhong Lifang Wu The Center for Ion Beam.Bioengineering&Green Agriculture Hefei Institutes of Physical ScienceChinese Academy of SciencesHefei 230031China University of Science and Technology of China Hefei 230026China Zhongke Taihe Experim.ntal Station Taihe 236626China Institute of Resources and Environm.nt Jiangsu Academy of Agricultural SciencesNanjing 210014China

Synthetic nitrogen(N)fertilizer has m.de a great contribution to the im.rovem.nt of soil fertility and productivity,but excessive application of synthetic N fertilizer m.y cause agroecosystem.risks,such as soil acidification,groundwater contam.nation and biodiversity ***,organic substitution has received increasing attention for its ecologically and environm.ntally friendly and productivity ***,the linkages between m.nure substitution,crop yield and the underlying m.crobial m.chanism. rem.in *** bridge this gap,a three-year field experim.nt was conducted with five fertilization regim.s:i)Control,non-fertilization;CF,conventional synthetic fertilizer application;CF_(1/2)m.(1/2),1/2 N input via synthetic fertilizer and 1/2 N input via m.nure;CF_(1/4)m.(3/4),1/4 N input synthetic fertilizer and 3/4 N input via m.nure;m.m.nure *** fertilization treatm.nts were designed to have equal N *** results showed that all m.nure substituted treatm.nts achieved high soil fertility indexes(SFI)and productivities by increasing the soil organic carbon(SOC),total N(TN)and available phosphorus(AP)concentrations,and by altering the bacterial com.unity diversity and com.osition com.ared with ***,AP,and the soil C:N ratio were m.inly responsible for m.crobial com.unity *** co-occurrence network revealed that SOC and AP had strong positive associations with Rhodospirillales and Burkholderiales,while TN and C:N ratio had positive and negative associations with m.crom.nosporaceae,*** specific taxa are im.licated in soil m.croelem.nt *** Forest analysis predicted that both biotic(bacterial com.osition and m.crom.nosporaceae)and abiotic(AP,SOC,SFI,and TN)factors had significant effects on crop *** present work strengthens our understanding of the effects of m.nure substitution on crop yield and provides theoretical support for optim.zing fertilization strategies.

关键词： fertilization m.nure substitution soil fertility m.ize yield bacterial com.unity

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