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The adsorption effect of aquaculture residual feed on heavy metals and its impact on microbial metabolism of feed

Ecological Processes 2024年第2期13卷 246-259页

作者： Sufeng Wang Zijng Wang wen Zhang jingshan li Mingyang lin li Chen State Key Laboratory of Metastable Materials Science and Technology Hebei Key Laboratory of Heavy Metal Deep-Remediation in Water and Resource Reuse Yanshan University Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province College of Biology and Environmental EngineeringZhejiang Shuren University Hebei Ocean & Fisheries Science Research Institute

Background Intensive and large-scale aquaculture has a high biological density, and a large amount of artificial feed must be provided. As a result, residual feed would be discharged into natural water bodies with water exchange. Due to heavy metal pollution in surface water, residual feed may adsorb heavy metals in the water, affecting the subsequent microbial degradation of feed and the restoration of the water environment. The combined ecological impacts of these two types of pollution urgently need to be *** This study explored the adsorption effect of residual feed on heavy metals and its impact on microbial degradation of residual feed. The results showed that both the insoluble component（mainly fiber, ash, and ether extract, abbreviated as FAE） and soluble component（soluble protein and starch） of the feed had adsorption effects on heavy metals. As the salinity increased, the adsorption capacity of Cu2+and Cd2+decreased, while the adsorption effect on Pb2+was not changed significantly. The adsorption of heavy metals by residual feed could affect the biological degradation of residual feed. The residual feed could adsorb heavy metals and bacterial cells simultaneously, forming FAE-B（bacteria）-S（starch）-Pr（protein）-metal adsorption complex. This adsorption effect could reduce the negative impact of heavy metals on microbial degradation of residual feed. The simulated degradation experiments in actual water bodies also confirmed this. However, the accumulation of heavy metals in residual feed may bring negative effects, such as being consumed by aquatic organisms and entering the food *** The results of this study provide a basis for the collection and centralized treatment of residual feed in aquaculture, as well as the control and remediation of residual feed pollution in natural water bodies.

关键词： Residual feed Adsorption complex Feed pollution Heavy metal

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Dietary cooking oils and cardiometabolic measurements in an elderly Chinese population

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Journal of Geriatric Cardiology 2024年第6期21卷 642-650页

作者： Xin-Yu WANG Chao-Ying MIAO Xiao-Fei YE wen-Yuan-Yue WANG jia-Bo ZHU Yi ZHOU Yan li ji-Guang WANG School of Public Health Shanghai Jiao Tong University School of MedicineShanghaiChina Department of Cardiovascular Medicine Centre for Epidemiological Studies and Clinical TrialsThe Shanghai Institute of HypertensionRuijin HospitalShanghai Jiao Tong University School of MedicineShanghaiChina

OBJECTIVE To investigate three features of dietary cooking oil intake,namely,the consumption,cooking style,and composition of fatty acids in relation to several cardiometabolic measurements in an elderly Chinese *** The elderly(≥65 years)participants for this study were recruited from two community health centers in the urban area of Shanghai.A questionnaire was administered to collect information on dietary oil consumption(low,medium and high)and cooking styles(fry or stir-fry ***)and the composition of fatty acids(poly-unsaturated ***-unsaturated).The cardiometabolic measurements included anthropometry,blood pressure,fasting plasma glucose and serum *** The 1186 study participants had a mean age of 70.9±5.4 *** mean dietary oil consumption was 35.0 g/d,being low(lic and diastolic blood pressure and serum low-density lipoprotein cholesterol,and the dietary intake of oils rich in mono-unsaturated fat acids was significantly(P≤0.02)and positively associated with diastolic blood pressure,serum triglycerides,total cholesterol and low-density lipoprotein cholesterol,and the prevalence of hypertriglyceridemia and *** This study showed that both the consumption and composition of fatty acids of the dietary oils mattered with regard to sev

关键词： cooking elderly unsaturated

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Epidemiology of congenital diaphragmatic hernia among 24 million Chinese births:a hospital-based surveillance study

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World Journal of Pediatrics 2024年第7期20卷 712-722页

作者： Zhi-Yu Chen jing Tao wen-li Xu Yu-Yang Gao wen-Yan li Zhen liu jia-Yuan Zhou li Dai National Center for Birth Defects Monitoring West China Second University HospitalSichuan UniversityNo.17 Section 3 RenminnanluChengdu 610041China The Joint Laboratory for Pulmonary Development and Related Diseases West China Institute of Women and Children’s HealthWest China Second University HospitalSichuan UniversityChengduChina Key Laboratory of Birth Defects and Related Diseases of Women and Children Ministry of EducationSichuan UniversityChengduChina NHC Key Laboratory of Chronobology Sichuan UniversityChengduChina Med‑X Center for Informatics Sichuan UniversityChengduChina

Background The prevalence of congenital diaphragmatic hernia(CDH)varies across countries,with limited information available on its epidemiology in *** study aimed to investigate the prevalence,time trends,and perinatal outcomes of CDH in China,as well as its associated malformations and potential associations with maternal and infant *** This study included all birth and CDH cases from the Chinese Birth Defects Monitoring Network between 2007 and 2019,with CDH cases classified as either isolated or *** employed the joinpoint regression model to calculate the trends of prevalence and the annual percent change,with Poisson regression used for adjusted prevalence rate ratios.A P value≤0.05 was considered statistically *** A total of 4397 CDH cases were identified among 24,158,029 births in the study period,yielding prevalence rates of 1.82,1.13 and 0.69 per 10,000 for overall,isolated,and associated CDH,*** prevalence of each type of CDH increased over *** prevalence of overall CDH varied significantly by infant sex(male ***,1.91/10,000 vs.1.63/10,000),maternal residence(urban ***,2.13/10,000 vs.1.45/10,000),maternal age(lies were the most common malformations associated with *** with associated CDH had a higher risk of premature birth and perinatal death than those with isolated *** The increasing prevalence and high perinatal mortality rate of CDH highlight the need for further etiological,epidemiological,and clinical studies among the Chinese population.

关键词： China Congenital diaphragmatic hernia Epidemiology Prevalence

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Remote ischemic conditioning prevents ischemic cerebrovascular events in children with moyamoya disease:a randomized controlled trial

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World Journal of Pediatrics 2024年第9期20卷 925-934页

作者： Shuang-Feng Huang jia-li Xu Chang-Hong Ren Nathan Sim Cong Han Yi-Qin Han wen-Bo Zhao Yu-Chuan Ding Xun-Ming ji Si-jie li Department of Neurology Xuanwu HospitalCapital Medical UniversityNo 45Changchun StreetXicheng DistrictBeijing100053China Department of Rehabilitation Medicine Beijing Shijitan Hospital Affiliated to Capital Medical UniversityBeijingChina Beijing Institute of Brain Disorders Capital Medical UniversityNo.10XitoutiaoYou’anmenwaiFengtai DistrictBeijing100053China Beijing Key Laboratory of Hypoxic Conditioning Translational Medicine Xuanwu HospitalCapital Medical UniversityBeijingChina Department of Neurosurgery Wayne State UniversityDetroitMIUSA Department of Neurosurgery The Fifth Medical CentreChinese PLA General HospitalBeijingChina Department of Emergency Xuanwu HospitalCapital Medical UniversityBeijingChina

Background Moyamoya disease(MMD)is a significant cause of childhood stroke and transient ischemic attacks(TIAs).This study aimed to assess the safety and efficacy of remote ischemic conditioning(RIC)in children with *** In a single-center pilot study,46 MMD patients aged 4 to 14 years,with no history of reconstructive surgery,were randomly assigned to receive either RIC or sham RIC treatment twice daily for a *** primary outcome measured was the cumulative incidence of major adverse cerebrovascular events(MACEs).Secondary outcomes included ischemic stroke,recurrent TIA,hemorrhagic stroke,revascularization rates,and clinical improvement assessed using the patient global impression of change(PGIC)scale during ***-related adverse events were also recorded,and cerebral hemodynamics were evaluated using transcranial *** All 46 patients completed the final follow-up(23 each in the RIC and sham RIC groups).No severe adverse events associated with RIC were ***-Meier analysis indicated a significant reduction in MACEs frequency after RIC treatment[log-rank test(Mantel-Cox),P=0.021].At 3-year follow-up,two(4.35%)patients had an ischemic stroke,four(8.70%)experienced TIAs,and two(4.35%)underwent revascularization as the qualifying *** clinical improvement rate in the RIC group was higher than the sham RIC group on the PGIC scale(65.2%vs.26.1%,P<0.01).No statistical difference in cerebral hemodynamics post-treatment was *** RIC is a safe and effective adjunct therapy for asymptomatic children with *** was largely due to the reduced incidence of ischemic cerebrovascular events.

关键词： Asymptomatic moyamoya disease Children Remote ischemic conditioning Stroke

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Rapid chemical recycling of waste polyester plastics catalyzed by recyclable catalyst

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Green Chemical Engineering 2024年第2期5卷 257-265页

作者： Yu-ji Luo jia-Yin Sun Zhi li School of Physical Science and Technology ShanghaiTech UniversityShanghai201210China

Waste plastics are serious environmental threats due to their low degradability and low recycling *** and efficient waste plastics recycling technologies are urgently demanded for a sustainable ***,we report a rapid,closed-loop,and streamlined process to convert polyesters such as poly(ethylene terephthalate)(PET)back to its purified *** trifluoromethanesulfonic acid or metal triflates as the recyclable catalyst,polyesters such as PET can be completely depolymerized by simple carboxylic acids within 1 *** coupling this acidolysis with a subsequent hydrogenolysis process,the consumed carboxylic acid was recovered and the closed-loop of PET depolymerization could be *** catalysts and depolymerization agents are fully recycled while only PET and hydrogen are consumed.

关键词： Chemical recycling Waste polyester plastics Acidolysis Recyclable catalyst

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Feedback of Efficient Shock Acceleration on Magnetic-field Structure Inside Young Type Ia Supernova Remnants

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Research in Astronomy and Astrophysics 2024年第6期24卷 234-244页

作者： Jun-Yu Shen Bi-wen Bao li Zhang Department of Astronomy Key Laboratory of Astroparticle Physics of Yunnan ProvinceYunnan UniversityKunming 650091China Key Laboratory of Statistical Modeling and Data Analysis of Yunnan Province Yunnan UniversityKunming 650091China

Using an effective adiabatic index γ_(eff) to mimic the feedback of efficient shock acceleration,we simulate the temporal evolution of a young type Ia supernova remnant (SNR) with two different background magnetic field(BMF) topologies:a uniform and a turbulent *** density distribution and magnetic-field characteristics of our benchmark SNR are studied with two-dimensional cylindrical magnetohydrodynamic *** γ_(eff)is considered,we find that:(1) the two-shock structure shrinks and the downstream magnetic-field orientation is dominated by the Rayleigh–Taylor instability structures;(2) there exists more quasi-radial magnetic fields inside the shocked region;and (3) inside the intershock region,both the quasi-radial magnetic energy density and the total magnetic energy density are enhanced:in the radial direction,with γ_(eff)=1.1,they are amplified about 10–26 times more than those with γ_(eff)=5/*** in the angular direction,the total magnetic energy densities could be amplified about 350 times more than those with γ_(eff)=5/3,and there are more grid cells within the intershock region where the magnetic energy density is amplified by a factor greater than 100.

关键词： methods:numerical ISM:magnetic fields ISM:supernova remnants magnetohydrodynamics(MHD)

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Quantitative characterization of fusion state of virgin and aged asphalt using nano-ferrous ferric oxide tracer

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Journal of Traffic and Transportation Engineering(English Edition) 2024年第3期11卷 467-480页

作者： Qiang li Song liu Huameng wen Zhou Zhou College of Civil Engineering Nanjing Forestry UniversityNanjing 210037China School of Transportation Southeast UniversityNanjing 211189China

The exact evaluation of the fusion rate of virgin and aged asphalt is essential to optimize the performance of the recycled asphalt *** fusion rate index was developed by tracing the distribution of tracer asphalt,which contains nano-ferrous ferric oxide(nano-Fe_(3)O_(4))*** fusion simulation tests were performed on three types of asphalt to obtain different fusion states,and fatigue tests were performed to evaluate the influence of the fusion rate on the fatigue life of the recycled *** was found that the tracer asphalt containing 4%nano-Fe_(3)O_(4)shows the optimal trace effect,and the developed fusion rate index can quantitatively characterize the influence of different factors on the fusion state of the recycled *** fusion state is closely related to the fatigue performance of recycled asphalt,and the fusion rate index can fairly evaluate its fatigue *** relationship between the fusion rate and the fatigue life of recycled asphalt depends on the factors that cause the fusion rate *** the influence of the amount of rejuvenator,the fatigue life of recycled asphalt grows exponentially with increasing fusion rate due to enhancement of molecular motion as well as a supplement of lightweight *** the influence of heat preservation treatment,fatigue life increases linearly with increasing fusion *** proposed fusion rate index can be utilized to quantitatively characterize the fusion state of virgin and aged asphalt,thus providing a simple way to guide the practical application of recycled asphalt.

关键词： Recycled asphalt Rejuvenator Tracing technique Fusion rate Fatigue

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Highly active and durable La_(0.6) Ca_(0.4)(CrMnFeCo_(2)Ni)O_(3) high entropy perovskite oxide as electrocatalyst for oxygen evolution reaction in alkaline media

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Journal of Materials Science & Technology 2024年第1期168卷 71-78页

作者： Xiaoqiang ji Fan Yang Yunzhu Du jing li jianguo li Qiaodan Hu Shanghai Key Laboratory of Materials Laser Processing and Modification School of Materials Science and EngineeringShanghai Jiao Tong UniversityShanghai 200240China School of Mechanical Engineering Shanghai Jiao Tong UniversityShanghai 200240China

Oxygen evolution reaction(OER)is the imperative reaction for many energy storage and conversion devices such as recharge-able metal-air batteries and electrochemical water splitting[1].OER is a complex 4-electron process with sluggish kinetics and therefore requires electrocatalysts to overcome the high *** oxide(RuO_(2))and iridium oxide(IrO_(2))catalysts can promote the OER process remarkably[2-4],however,their ex-tremely high cost,natural scarcity,and long-term instability con-strain their scale-up application in clean-energy technologies[5,6].It is crucial to develop inexpensive,highly efficient,and durable electrocatalysts for OER.

关键词： entropy alkaline perovskite

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Vibration Reduction by a Partitioned Dynamic Vibration Absorber with Acoustic Black Hole Features

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Chinese Journal of Mechanical Engineering 2024年第4期37卷 120-134页

作者： Xiaoning Zhao Chaoyan Wang Hongli ji jinhao Qiu li Cheng State Key Laboratory of Mechanics and Control of Mechanical Structures Nanjing University of Aeronautics and AstronauticsNanjing 210016China Nanjing Institute of Information Technology Nanjing 210016China Department of mechanical Engineering Hong Kong Polytechnic UniversityKowloon 999077Hong KongChina

Vibration quality is a vital indicator for assessing the progress of modern *** dynamic vibration absorber(DVA)based on the acoustic black hole(ABH)feature is a new passive control method that manipulates *** offers efficient energy focalization and broad-spectrum vibration suppression,making it highly promising for applications in large equipment such as aircraft,trains,and *** previous advancements in ABH-DVA development,certain challenges remain,particularly in ensuring effective coupling with host structures during *** address these issues,this study proposes a partitioned ABH-featured dynamic vibration absorber(PABH-DVA)with partitions in the radial direction of the *** employing a plate as the host structure,simulations and experiments were conducted,demonstrating that the PABH-DVA outperforms the original symmetric ABH-DVA in terms of damping *** study also calculated and compared the coupling coefficients of the two ABH-DVAs to uncover the mechanism behind the enhanced *** results revealed that the PABH-DVA exhibits more coupled modes,occasionally with lower coupling coefficients than the symmetric *** influence of frequency ratio and modal mass was further analyzed to explain the reasons behind the PABH-DVA's superior damping ***,the study discussed the impact of the number of slits and their *** research further explains the coupling mechanism between the ABH-DVA and the controlled structure,and provides new ideas for the further application of ABH in engineering.

关键词： Acoustic black hole Vibration control Dynamic vibration absorber Coupling analysis

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Combined UAMP and MF Message Passing Algorithm for Multi-Target Wideband DOA Estimation with Dirichlet Process Prior

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Tsinghua Science and Technology 2024年第4期29卷 1069-1081页

作者： Shanwen Guan Xinhua Lu ji li Rushi Lan Xiaonan Luo Guangxi Key Laboratory of Image and Graphic Intelligent Processing Guilin University of Electronic TechnologyGuilin 541004China Guilin Huigu Institute of AI Industrial Technology Guilin 541004China School of Information Engineering Nanyang Institute of TechnologyNanyang 473000China

When estimating the direction of arrival (DOA) of wideband signals from multiple sources, the performance of sparse Bayesian methods is influenced by the frequency bands occupied by signals in different directions. This is particularly true when multiple signal frequency bands overlap. Message passing algorithms (MPA) with Dirichlet process (DP) prior can be employed in a sparse Bayesian learning (SBL) framework with high precision. However, existing methods suffer from either high complexity or low precision. To address this, we propose a low-complexity DOA estimation algorithm based on a factor graph. This approach introduces two strong constraints via a stretching transformation of the factor graph. The first constraint separates the observation from the DP prior, enabling the application of the unitary approximate message passing (UAMP) algorithm for simplified inference and mitigation of divergence issues. The second constraint compensates for the deviation in estimation angle caused by the grid mismatch problem. Compared to state-of-the-art algorithms, our proposed method offers higher estimation accuracy and lower complexity.

关键词： wideband direction of arrival(DOA)estimation sparse Bayesian learning(SBL) unitary approximate message passing(UAMP)algorithm Dirichlet process(DP)

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