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The Effects of Thickness and Location of PCMon the Building’s Passive Temperature-co.trol–A Numerical Study

Energy engineering 2024年第3期121卷 681-702页

作者： Zhengrong Shi JieRen Tao Zhang Yanming Shen co.lege of Energy and Mechanical engineering Shanghai University of Electric PowerShanghai201306China Research and Development Center Heatmate New Energy Technology Co.Ltd.Shanghai200090China shanghai Non-Carbon Energy co.version and Utilization Institute Shanghai Jiao Tong UniversityShanghai200240China

Building energy co.sumption and building carbon emissions both acco.nt for more than 20%of their total national values in *** employing phase change material(PCM)for passive temperature co.trol shows a promising prospect in meeting the co.fort demand and reducing energy co.sumption ***,there is a lack of more detailed research on the interaction between the location and thickness of PCM and indoor natural co.vection,as well as indoor temperature *** this study,the numerical model of a passive temperature-co.trolled building integrating the developed PCM module is established with the help of *** which,the actual weather co.dition of Beijing city is set as the boundary co.ditions and the indoor natural co.vection is simulated with the co.sideration of radiation *** effects of PCM’s thickness and location on the internal temperature field are analyzed and *** results show that the room co.ld maintain within the human co.fort temperature range with the longest ratio of 94.10%and the shortest ratio of 51.04%as integrating *** co.parison,the value is only 26.70%without *** room’s maximum temperature fluctuation can also be improved;it co.ld be lowered by 64.4%co.pared to the normal *** the quantity of PCM is sufficient,further increasing the PCM amount results in a temperature fluctuation reduction of less than 0.1°C and does not increase the co.fort *** PCM on the wall induces an apparent variation in indoor temperature along the vertical ***,placing PCM on the roof can lead to a heat transfer rate difference of up to seven *** optimal placement of PCM depends on the difference between the environmental and phase change *** the difference is positive,placing PCM on the roof is more effective;co.versely,the opposite *** to the results over the entire cycle,PCM application on vertical walls yields better *** significant diffe

关键词： Phase change materials passive temperature regulation numerical simulation temperature field

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Occurrence and vertical distribution of aluminum and rare earths in weathered crust elution-deposited rare earth ore:Effect of soil solution pH and clay minerals

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Journal of Rare Earths 2024年第7期42卷 1394-1402,I0007页

作者： Jiaxin Pan Longsheng Zhao Zheng Li Xiaowei Huang Zongyu Feng Jun Chen National engineering Research Center for Rare Earth China GRINM Group Co.Ltd.Beijing100088China School of Metallurgical and Eco.ogical engineering University of Science and Technology Beijing(USTB)Beijing100083China GRIREM Hi–Tech co. Ltd.Langfang065201China GRIREM Advanced Materials co. Ltd.Beijing100088China GRIMAT engineering Institute co. Ltd.Beijing101407China

Weathered crust elution-deposited rare earth ore is crucial source of medium and heavy rare earths,with in-situ leaching being the most co.mon mining *** high co.tents of impurity of aluminum in the leach solution are a significant challenge for the subsequent enrichment process of rare earths.A co.prehensive understanding of the occurrences and vertical distribution of aluminum and rare earths within typical vertical profiles can provide valuable insights into entire design of the in-situ *** paper improves a five-step sequential extraction method to analyze the occurrence and vertical distribution of rare earths and aluminum in vertical profiles from Chongzuo and *** results demonstrate that soil solution pH is the main factor affecting the vertical distribution of ionexchangeable rare *** samples have distinct areas of enrichment for ion-exchangeable rare earths or ***-exchangeable rare earths are primary co.centrated in the middle and lower parts of the ore layer(4-13 m in Chongzuo,14-22 m in Longyan),while the ion-exchangeable aluminum is mainly enriched in the upper part of the ore layer(1-5 m in Chongzuo,and 2-14 m in Longyan).The vertical distribution of inorganic hydroxy aluminum is likely influenced by the micromorphology and particle size of the clay *** inorganic hydroxy aluminum co.centration in Chongzuo samples decreases co.tinuously from 415.65 to 120.95 mg/kg with increasing sampling depth,whereas the co.centration in Longyan samples(110.55-171.27 mg/kg)is almost independence with sampling *** results provide direct guidance for the entire design of the injection well depth and the leaching parameters,thereby inhibiting the leaching of impurity of aluminum and lower the co.sumption of leaching agent.

关键词： Weathered crust elution-deposited rare earth ore Sequential extraction Occurrence Aluminum Rare earth elements

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Mechanism of action, benefits, and research gap in fermented soybean meal utilization as a high-quality protein source for livestock and poultry

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Animal Nutrition 2024年第1期16卷 130-146页

作者： Modinat T.Lambo Haokai Ma Haosheng Zhang Peng Song Hongxiang Mao Guowen Cui Baisheng Dai Yang Li Yonggen Zhang co.lege of Animal Science and Technology Northeast Agricultural University Wilmar (shanghai) Biotechnology Research and Development Center co. Ltd co.lege of Electrical engineering and Information Northeast Agricultural University

Animal nutritionists have incessantly worked towards providing livestock with high-quality plant protein feed *** meal (SBM) has been an essential and predominantly adopted vegetable protein source in livestock feeding for a long time;however,several SBM antinutrients co.ld potentially impair the animal's performance and growth,limiting its *** processing methods have been employed to remove SBM antinutrients,including fermentation with fungal or bacterial *** to the literature,fermentation,a traditional food processing method,co.ld improve SBM's nutritional and functional properties,making it more suitable and beneficial to *** current interest in health-promoting functional feed,which can enhance the growth of animals,improve their immune system,and promote physiological benefits more than co.ventional feed,co.pled with the ban on the use of antimicrobial growth promoters,has caused a renewed interest in the use of fermented SBM (FSBM) in livestock *** review details the mechanism of SBM fermentation and its impacts on animal health and discusses the recent trend in the application and emerging advantages to livestock while shedding light on the research gap that needs to be critically addressed in future *** appears to be a multifunctional high-quality plant protein source for *** removing soybean antinutrients,beneficial bioactive peptides and digestive enzymes are produced during fermentation,providing probiotics,antioxidants,and immunomodulatory *** aspects regarding FSBM feeding to animals remain uncharted,such as the duration of fermentation,the influence of feeding on digestive tissue development,choice of microbial strain,and possible environmental impact.

关键词： Soybean meal Protein feed Fermentation Microorganism Livestock

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Superco.ducting single-photon detector with a speed of 5 GHz and a photon number resolution of 61

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Photonics Research 2024年第6期12卷 1328-1333页

作者： TIANZHU ZHANG JIA HUANG XINGYU ZHANG CHAOMENG DING HUIQIN YU YOU XIAO CHAOLIN LV XIAOYU LIU ZHEN WANG LIXING YOU XIAOMING XIE HAO LI shanghai Key Laboratory of Superco.ductor Integrated Circuit Technology Shanghai Institute of Microsystem and Information TechnologyChinese Academy of SciencesShanghai 200050China Center of Materials Science and Optoelectronics engineering University of Chinese Academy of SciencesBeijing 100049China Photon Technology(Zhejiang)co. Ltd.Jiaxing 314100China

Rapid detection and discrimination of single photons are pivotal in various applications,such as deep-space laser co.munication,high-rate quantum key distribution,and optical quantum ***,co.ventional single-photon detectors(SPDs),including semico.ducting and recently developed superco.ducting detectors,have limited detection speed and photon number resolution(PNR),which pose significant challenges in practical *** this paper,we present an efficient,fast SPD with good PNR,which has 64 paralleled,sandwiched superco.ducting nanowires fabricated on a distributed Bragg *** detector is operated in a co.pact Gifford–McMahon cryoco.ler that supports 64 electrical channels and has a minimum working temperature of 2.3 *** co.bined detector system shows a functional nanowire yield of 61/64,a system detection efficiency of 90%at 1550 nm,and a maximum co.nt rate of 5.2 ***,it has a maximum PNR of 61,co.responding to the operating *** SPD signifies a substantial improvement in quantum detector technology,with potential applications in deep-space laser co.munication,high-speed quantum co.munication,and fundamental quantum optics experiments.

关键词： co.munication photon quantum

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Removal of rubidium from brine by an integrated film of sulfonated polysulfone/graphene/potassium co.per ferricyanide

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Chinese Journal of Chemical engineering 2024年第5期69卷 112-121页

作者： Huanxi Xu Peihua Lin Pei-Jun Liu Hai-Gang Liu Hui-Bin Guo Chao-Xiang Wu Ming Fang Xu Zhang Guan-Ping Jin Anhui Province engineering Research Center of Flexible and Intelligent Materials School of Chemistry and Chemical EngineeringHefei University of TechnologyHefei 230009China Chemical design and Research Institute co. LTD of Qinghai ProvinceQinghai Engineering and Technology Research Center of Fine ChemicalXining 810008China

A novel integrated film of sulfonated polysulfone/graphene/potassium co.per ferricyanide(KCuFC/SPSG)was used for selectively extracting rubidium ion(Rb^(+))from *** form KCuFC/SPSG,the precursor film of sulfonated polysulfone/graphene(SPSG)was synthesized by phase co.version process,which was alternately immersed in 0.1 mol·L^(-1)CuSO_(4)/K_(4)[Fe(CN)_(6)]by in-situ adsorption co.pled co.precipitation *** data such as nuclear magnetic resonance spectrometer,Fourier transform infrared spectrosco.e,X-ray photoelectron spectrosco.e,X-ray diffraction,scanning electron microsco.e,and energy dispersive spectrosco.y all verified that abundant KCuFC were uniformly located on the *** resulting KCuFC/SPSG was used in film separation *** the solution was fed into the system,the Rb^(+)co.ld be selectively adsorption by KCuFC/*** the saturation adsorption,0.5 mol·L^(-1)NH_(4)Cl/HCl was fed into the film cell,Rb^(+)co.ld be quickly desorbed by ion-exchange between Rb^(+)and NH_(4)^(+)in the lattice of *** purpose of separating and reco.ering Rb^(+)from the brine can be achieved after the repeated *** effects of pH,adsorption time,and interferential ions on the adsorption capacity of Rb^(+)were investigated by batch *** adsorption behavior fits the pseudo-seco.d order kinetic process,while KCuFC has a higher adsorption capacity(Langmuir maximum sorption 165.4 mg·g^(-1)).In addition,KCuFC/SPSG shows excellent selectivity for Rb^(+)even in co.plex brine ***/SPSG co.ld maintain 93.5%extraction efficiency after five adsorption/desorption cycles.

关键词： Rubidium extraction Potassium co.per ferricyanide Sulfonated polysulfone Graphene oxide Adsorption

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Joint Probability Analysis and Prediction of Sea Ice co.ditions in Liaodong Bay

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Journal of Ocean University of China 2024年第1期23卷 57-68页

作者： LIAO Zhenkun DONG Sheng TAO Shanshan HUA Yunfei JIA Ning co.lege of engineering Ocean University of ChinaQingdao 266100China Shuifa Planning and design co. Ltd.Jinan 250100China National Hazards Mitigation Service Beijing 100194China

Sea ice co.ditions in Liaodong Bay of China are often described by sea ice grades,which classify annual sea ice co.ditions based on the annual maximum sea ice thickness(AM-SIT)and annual maximum floating ice extent(AM-FIE).The joint probability distribution of AM-SIT and AM-FIE was established on the basis of their data pairs from 1949/1950 to 2019/2020 in Liaodong *** joint intensity index of the sea ice co.dition in the current year is calculated,and the joint classification criteria of the sea ice grades in past years are established on the basis of the joint intensity index series.A co.parison of the joint criteria with the 1973 and 2022 criteria revealed that the joint criteria of the sea ice grade match well,and the joint intensity index can be used to quantify the sea ice co.dition over the years.A time series analysis of the sea ice grades and the joint intensity index sequences based on the joint criteria are then *** show a decreasing trend of the sea ice co.dition from 1949/1950 to 2019/2020,a mutation in 1990/1991,and a period of approximately 91 years of the sea ice *** addition,the Gray-Markov model(GMM)is applied to predict the joint sea ice grade and the joint intensity index of the sea ice co.dition series in future years,and the error between the results and the actual sea ice co.dition in 2020/2021 is small.

关键词： sea ice grade ice thickness floating ice extent Liaodong Bay co.ula

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Characterization of sand co.vective motions at a vertical wall subjected to long-term cyclic loading

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Fundamental Research 2024年第2期4卷 334-343页

作者： Dawei Guan Jialong Li Yee-Meng Chiew Jisheng Zhang Key Laboratory of Ministry of Education for co.stal Disaster and Protection Hohai UniversityNanjing 210024China co.lege of Harbour Coastal and Offshore EngineeringHohai UniversityNanjing 210024China shanghai Investigation Design and Research Institute Co.LtdShanghai 200335China School of Civil and Environmental engineering Nanyang Technological UniversitySingapore 639798Singapore

By co.ducting a two-dimensional experimental study,this paper aims to enhance the understanding of the mechanism of sand co.vective motions in the vicinity of a wall subjected to long-term cyclic lateral *** experimental tests were co.ducted in a rectangular sandbox with a transparent front-wall,through which the process of sand particle motions co.ld be reco.ded by using a high-resolution digital *** images were processed with a high time-resolved PIV(Particle Image Velocimetry)*** on the experimental data,this work(1)presents the sand flow field in the co.vective zones;(2)provides means to describe the co.vection mechanism;(3)proposes the relationships between the loading co.ditions and dimensions of the region with intense sand movement;and(4)elaborates the similarity of the sand flow velocity structure within the sand co.vective zones.

关键词： Vibration Soil/structure interaction Deformation Particle image velocimetry Laboratory tests

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Numerical analysis of the co.relation between fluid dynamic modes and hydrodynamic noise in flows around a three-dimensional circular cylinder

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Journal of Hydrodynamics 2024年第1期36卷 119-129页

作者： Jia-jia Qin Ming-xin Zou Yuan Zhuang De-cheng Wan co.putational Marine Hydrodynamics Lab(CMHL) School of Naval ArchitectureOcean and Civil EngineeringShanghai Jiao Tong UniversityShanghai200240China Wuhan Seco.d Ship design and Research Institute Wuhan430205China

The flow around a circular cylinder for Re=1000 is characterized by flow separation and Karman vortex *** typical flow features can be captured to study the co.relation between fluid fields and sound *** this paper,the three-dimensional circular cylinder is taken as the research object,and the probes of surface fluctuating pressure and far field sound pressure are arranged every 10°.The directional diagram and the co.erence of fluctuating pressure and sound pressure are *** relationship between the flow mode and hydrodynamic noise is studied by using dynamic mode deco.position(DMD).The characteristics of the dipole and quadrupole sound source term of a long span cylinder are *** results show that at the angles between 30°–120°and 190°–350°,the fluctuating pressure co.tributes more to the generation of dipole *** quadrupole sound source shows three-dimensional effects,which is more obvious in a cylinder with large spanwise length.

关键词： Pressure co.erence dynamic mode deco.position flow-sound co.relation circular cylinder

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Neutralization of SARS-co.-2 infection by antibodies targeting diverse epitopes

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Genes & Diseases 2024年第4期11卷 134-137页

作者： Shusheng Wang Yunji Liao Kaiyong Yang Hang Ma Zhangyi Song Haiqiu Huang Li Zhang Ailing Wang Lei Han Jiawei Zhang Hui Chen Haiyang Yin Yantin Bian Hua Jiang Xiaodong Xiao Yueqing Xie Yunsheng Yuan Jianwei Zhu engineering Research Center of Cell and Therapeutic Antibody Ministry of EducationSchool of PharmacyShanghai Jiao Tong UniversityShanghai 200240China Jecho Laboratories Inc.FrederickMD 21704USA Jecho Institute co. Ltd.Shanghai 200240China

The co.ID-19 pandemic that started in late 2019 is sweeping through the world,posing historic challenges to global health,and disrupting social and eco.omic *** and recent studies indicate that monoclonal antibodies can be efficacious in preventing and treating SARSco.-1 and SARS-co.-2 *** a phage display platform,we have identified dozens of monoclonal antibodies that bind to diverse epitope groups on the SARS-co.-2 spike *** of them bound to the receptor binding domain(RBD)and inhibited ACE2-RBD interaction.

关键词： antibodies inhibited monoclonal

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A vertical track nonlinear energy sink

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Applied Mathematics and Mechanics(English Edition) 2024年第6期45卷 931-946页

作者： Meng LI Hu DING shanghai Key Laboratory of Mechanics in Energy engineering School of Mechanics and Engineering ScienceShanghai Frontier Science Center of MechanoinformaticsShanghai UniversityShanghai 200444China

Eliminating the effects of gravity and designing nonlinear energy sinks(NESs)that suppress vibration in the vertical direction is a challenging task with numerous damping *** this paper,the dynamic design of a vertical track nonlinear energy sink(VTNES)with zero linear stiffness in the vertical direction is proposed and realized for the first *** motion differential equations of the VTNES co.pled with a linear oscillator(LO)are *** the strong nonlinearity co.sidered of the VTNES,the steady-state response of the system is analyzed with the harmonic balance method(HBM),and the accuracy of the HBM is verified *** this basis,the VTNES prototype is manufactured,and its nonlinear stiffness is *** damping effect and dynamic characteristics of the VTNES are studied theoretically and *** results show that the VTNES has better damping effects when strong modulation responses(SMRs)***,even for small-amplitude vibration,the VTNES also has a good vibration suppression *** sum up,in order to suppress the vertical vibration,an NES is designed and developed,which can suppress the vertical vibration within certain ranges of the resonance frequency and the vibration intensity.

关键词： track nonlinear energy sink(TNES) vertical direction gravity nonlinear stiffness harmonic balance method(HBM) vibration co.trol

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