检索结果-南通市图书馆

Longitudinal changes in body weight of breastfeeding mothers in the first year after delivery and its relationship with human milk composition:a combined longitudinal and cross-sectional cohort 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

Food Science and Human Wellness 2024年第1期13卷 254-264页

作者： Huijuan Ruan Yajie Zhang Qingya Tang Xuan Zhao Xuelin Zhao Yi Xiang wei geng Yi Feng wei Cai Department of Clinical Nutrition Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghai 200092China Shanghai Key Laboratory of Pediatric Gastroenterology and Nutrition Shanghai Institute of Pediatric ResearchShanghai 200092China Department of Pediatric Surgery Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghai 200092China

Objective:Postpartum weight retention(PPWR)is a common problem among women after childbirth.The main objectives of this study are to understand the changes in body weight of breastfeeding mothers during long-term follow-up and preliminarily explore the relationship between maternal body weight and human milk composition,including macronutrients,leptin,and adiponectin.Methods:The study included a longitudinal cohort(122 mothers),and a cross-sectional cohort(37 mothers).The human milk,maternal weight,and dietary surveys were collected in the longitudinal cohort at different follow-up time points(1-14 days postpartum,2-4 months postpartum,5-7 months postpartum,and 12-17 months postpartum).The maternal body weight was analyzed using the responses in the survey questionnaires.A milk analyzer based on the mid-infrared spectroscopy(MIRS)was used to determine milk composition,and nutrition analysis software evaluated dietary intakes.In the cross-sectional cohort,participating mothers were asked to provide blood and human milk samples and pertinent information related to maternal body composition.Maternal body composition was measured by bioelectrical impedance analysis(BIA),while ELISA analyzed leptin and adiponectin in milk and serum.Results:At 5-7 months postpartum,the PPWR of breastfeeding mothers was(2.46±3.59)kg.At 12-17 months postpartum,the PPWR was(0.98±4.06)kg.PPWR was found to be negatively correlated with milk fat content within 14 days postpartum and positively correlated at 2-4 months postpartum.In addition,the maternal weight and body muscle mass were positively correlated with leptin and adiponectin in milk.Plasma leptin was positively correlated with the mother’s body weight,body mass index(BMI),FAT percentage,and body fat mass,while plasma adiponectin did not correlate with any parameter.The results also indicate that the PPWR did not correlate with leptin and adiponectin in plasma or milk.Conclusions:Breastfeeding mothers may retain considerable weight gain one year after delivery.Human milk composition

关键词： Human milk Milk composition Body weight Body mass index(BMI) weight gain Postpartum weight retention

Command filtered integrated estimation guidance and control for strapdown missiles with circular field of view

在线全文

学校读者我要写书评

暂无评论

Defence Technology（防务技术） 2024年第5期35卷 211-221页

作者： wei Wang Jiaqi Liu Shiyao Lin Baokui geng Zhongjiao Shi School of Aerospace Engineering Beijing Institute of TechnologyBeijing 10081China China Research and Development Academy of Machinery Equipment Beijing 100089China Northwest Industries Group CO. Ltd.Xi'an 710043China

In this paper,an integrated estimation guidance and control(IEGC)system is designed based on the command filtered backstepping approach for circular field-of-view(FOV)strapdown missiles.The threedimensional integrated estimation guidance and control nonlinear model with limited actuator deflection angle is established considering the seeker's FOV constraint.The boundary time-varying integral barrier Lyapunov function(IBLF)is employed in backstepping design to constrain the body line-of-sight(BLOS)in IEGC system to fit a circular FOV.Then,the nonlinear adaptive controller is designed to estimate the changing aerodynamic parameters.The generalized extended state observer(GESO)is designed to estimate the acceleration of the maneuvering targets and the unmatched time-varying disturbances for improving tracking accuracy.Furthermore,the command filters are used to solve the"differential expansion"problem during the backstepping design.The Lyapunov theory is used to prove the stability of the overall closed-loop IEGC system.Finally,the simulation results validate the integrated system's effectiveness,achieving high accuracy strikes against maneuvering targets.

关键词： Integrated estimation guidance and control Circular field-of-view Time-varying integral barrier Lyapunov function Command filtered backstepping control Nonlinear adaptive control Extended state observer

维普期刊数据库博看期刊

Design and modification of metal sulfide-based catalysts for lithiumsulfur batteries

在线全文

学校读者我要写书评

暂无评论

Particuology 2024年第3期86卷 86-100页

作者： Yufei Zhao Chuannan geng Li Wang Haotian Yang wei Lv Quan-Hong Yang Nanoyang Group State Key Laboratory of Chemical EngineeringSchool of Chemical Engineering and TechnologyNational Industry-Education Integration Platform of Energy Storageand Collaborative Innovation Center of Chemical Science and Engineering(Tianjin)Tianjin UniversityTianjin300072China Shenzhen Geim Graphene Center Engineering Laboratory for Functionalized Carbon MaterialsTsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhen518055China Haihe Laboratory of Sustainable Chemical Transformations Tianjin300192China Joint School of National University of Singapore and Tianjin University International Campus of Tianjin UniversityFuzhou350207China

Metal sulfide(MS)have good conductivity,strong adsorption ability,and excellent catalytic activity for the conversion of sulfur species,and thus,show great promise as the catalysts in LieS batteries.However,the relationship between their properties and electrochemical performance is still unclear.Thus,further in-depth discussions are required to improve their design in Li-S batteries.This review systematically summarizes the basic structural and electrochemical properties of MSs and highlights the advantages that guarantee them as high-performance catalysts in Li-S batteries.Then,various modification strategies for MSs to enhance the catalytic activity,efficiency,and stability are also reviewed.At last,future opportunities for MS catalysts in Li-S batteries are proposed.

关键词： Lithium-sulfur battery Metal sulfide Catalysis

Point defects in 2-D liquid crystals with a singular potential: Profiles and stability

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China Mathematics 2024年

作者： Zhiyuan geng wei Wang Basque Center for Applied Mathematics School of Mathematical Sciences Zhejiang University

We study radial symmetric point defects with degreek2in the 2-D disk or R2in the Q-tensor framework with a singular bulk energy, which is defined by Bingham closure. First, we obtain the existence of solutions for the profiles of radial symmetric point defects with degreek2in the 2-D disk or R2. Then, we prove that the solution is stable for |k| = 1 and unstable for |k| > 1. Some identities are derived and utilized throughout the proof of existence and stability/instability.

关键词：

Damage evolution and removal behaviors of GaN crystals involved in double-grits grinding

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

International Journal of Extreme Manufacturing 2024年第2期6卷 469-484页

作者： Chen Li Yuxiu Hu Zongze wei Chongjun Wu Yunfeng Peng Feihu Zhang Yanquan geng State Key Laboratory of Robotics and System(HIT) Harbin Institute of TechnologyHarbin 150001People’s Republic of China Key Laboratory of Microsystems and Microstructures Manufacturing(HIT) Harbin Institute of TechnologyHarbin 150001People’s Republic of China College of Mechanical Engineering Donghua UniversityShanghai 201620People’s Republic of China Department of Mechanical and Electrical Engineering Xiamen UniversityXiamen 361005People’s Republic of China

Elucidating the complex interactions between the work material and abrasives during grinding of gallium nitride(GaN)single crystals is an active and challenging research area.In this study,molecular dynamics simulations were performed on double-grits interacted grinding of GaN crystals;and the grinding force,coefficient of friction,stress distribution,plastic damage behaviors,and abrasive damage were systematically investigated.The results demonstrated that the interacted distance in both radial and transverse directions achieved better grinding quality than that in only one direction.The grinding force,grinding induced stress,subsurface damage depth,and abrasive wear increase as the transverse interacted distance increases.However,there was no clear correlation between the interaction distance and the number of atoms in the phase transition and dislocation length.Appropriate interacted distances between abrasives can decrease grinding force,coefficient of friction,grinding induced stress,subsurface damage depth,and abrasive wear during the grinding process.The results of grinding tests combined with cross-sectional transmission electron micrographs validated the simulated damage results,i.***.amorphous atoms,high-pressure phase transition,dislocations,stacking faults,and lattice distortions.The results of this study will deepen our understanding of damage accumulation and material removal resulting from coupling between abrasives during grinding and can be used to develop a feasible approach to the wheel design of ordered abrasives.

关键词： grinding double-grits molecular dynamics damage material removal gallium nitride

Distinct clinical profiles and mutation landscapes of gliomas originating from the neocortex,mesocortex,and cerebellum

在线全文

学校读者我要写书评

暂无评论

Genes & Diseases 2024年第1期11卷 53-56页

作者： Ye Cheng Lei Zhang Xiaolong Wu Hiroaki Wakimoto Haoming geng Yukui wei geng Xu Xinru Xiao Jie Bai Yaming Wang Zeliang Hu Leiming Wang Qingtang Lian Department of Neurosurgery Xuanwu HospitalCapital Medical UniversityBeijing 100053China Brain Tumor Research Center Massachusetts General HospitalDepartment of NeurosurgeryHarvard Medical SchoolBostonMA02134USA Department of Pathology Xuanwu HospitalCapital Medical UniversityBeijing 100053China

Gliomas originating from anatomically and developmentally distinct brain regions have different clinical outcomes.However,the molecular landscape underlying this difference remains largelyunknown.We analyzed key molecular mutations via sequencing and correlated them with clinical characteristics in 180 adult patients with gliomas originating from the neocortex,mesocortex,and cerebellum.Cases of cerebellar origin had significantly longer survival than those of supratentorial origin,consistent with higher rates of mutation in key genes associated with supratentorial gliomas.

关键词： clinical cortex glioma

Translocation of telomerase reverse transcriptase coincided with ATP release in postnatal cochlear supporting cells

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Neural Regeneration Research 2024年第5期19卷 1119-1125页

作者： Yukai Zhang Keyong Tian wei wei Wenjuan Mi Fei Lu Zhenzhen Liu Qingwen Zhu Xinyu Zhang Panling geng Jianhua Qiu Yongli Song Dingjun Zha Department of Otolaryngology Xijing HospitalFourth Military Medical UniversityXi’anShaanxi ProvinceChina

The spontaneous bursts of electrical activity in the developing auditory system are derived from the periodic release of adenosine triphosphate(ATP)by supporting cells in the Kölliker’s organ.However,the mechanisms responsible for initiating spontaneous ATP release have not been determined.Our previous study revealed that telomerase reverse transcriptase(TERT)is expressed in the basilar membrane during the first postnatal week.Its role in cochlear development remains unclear.In this study,we investigated the expression and role of TERT in postnatal cochlea supporting cells.Our results revealed that in postnatal cochlear Kölliker’s organ supporting cells,TERT shifts from the nucleus into the cytoplasm over time.We found that the TERT translocation tendency in postnatal cochlear supporting cells in vitro coincided with that observed in vivo.Further analysis showed that TERT in the cytoplasm was mainly located in mitochondria in the absence of oxidative stress or apoptosis,suggesting that TERT in mitochondria plays roles other than antioxidant or anti-apoptotic functions.We observed increased ATP synthesis,release and activation of purine signaling systems in supporting cells during the first 10 postnatal days.The phenomenon that TERT translocation coincided with changes in ATP synthesis,release and activation of the purine signaling system in postnatal cochlear supporting cells suggested that TERT may be involved in regulating ATP release and activation of the purine signaling system.Our study provides a new research direction for exploring the spontaneous electrical activity of the cochlea during the early postnatal period.

关键词： apoptosis ATP release Ca2+transients cochlea mitochondrial function reactive oxygen species spontaneous electrical activity supporting cells

Greening the Belt and Road Initiative: Evidence from emergy evaluation of China’s provincial trade with ASEAN countries

在线全文

学校读者我要写书评

暂无评论

Fundamental Research 2024年第2期4卷 379-393页

作者： Xu Tian Joseph Sarkis wei Chen Yong geng Haozhi Pan Zuoxi Liu Sergio Ulgiati SJTU-UNIDO Joint Institute of Inclusive and Sustainable Industrial Development School of International and Public AffairsShanghai Jiao Tong UniversityShanghai 200030China Worcester Polytechnic Institute Worcester MA 01609-2280USA School of Geography and Environment Shandong Normal UniversityJinan 250358China School of International and Public Affairs Shanghai Jiao Tong UniversityShanghai 200030China Key Laboratory of Clean Energy of Liaoning School of Energy and EnvironmentShenyang Aerospace UniversityShenyang 110136China Department of Science and Technology Parthenope University of NapoliNaples 80143Italy School of Environment Beijing Normal UniversityBeijing 100875China

The Belt and Road Initiative(BRI)is a central policy within China’s regional development and foreign trade strategy.Traditional trade has typically depended on economic valuation of resources,while the embedded environmental value is rarely considered.This situation exists in most BRI trade evaluations.To address BRI environmental sustainability issues,we consider the role of pivotal Chinese provinces and their key trade partners(ASEAN countries)as an illustration for the environmental value of resource exchanges.Emergy accounting is used as the valuation tool for a sample period of seventeen years.Key results include:(1)Emergy valuations show sustainability of sample provinces decreased over time;(2)ASEAN countries such as Indonesia,Malaysia,Singapore,Thailand,and Vietnam play significant resource roles for provincial economic systems;(3)Diverse trends in trade between pivotal provinces and ASEAN countries resulted in an unbalanced trade structure from trade.Policy implications are proposed to promote a more globally sustainable and fair trade using BRI as an established trade policy.

关键词： International trade Emergy Belt and road initiative Environmental sustainability Province

Dual‑Atom Nanozyme Eye Drops Attenuate Inflammation and Break the Vicious Cycle in Dry Eye Disease

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano-Micro Letters 2024年第6期16卷 439-457页

作者： Dandan Chu Mengyang Zhao Shisong Rong Wonho Jhe Xiaolu Cai Yi Xiao wei Zhang Xingchen geng Zhanrong Li Xingcai Zhang Jingguo Li Henan Eye Hospital Henan Provincial People’s HospitalPeople’s Hospital of Zhengzhou UniversityZhengzhou 450003People’s Republic of China Department of Ophthalmology Mass Eye and EarMass General BrighamHarvard Medical SchoolBostonMA 02114USA School of Engineering and Applied Sciences Harvard UniversityCambridgeMA 02138USA College of Chemistry Zhengzhou UniversityZhengzhou 450001People’s Republic of China

Dry eye disease(DED)is a major ocular pathology worldwide,causing serious ocular discomfort and even visual impairment.The incidence of DED is gradually increasing with the highfrequency use of electronic products.Although inflammation is core cause of the DED vicious cycle,reactive oxygen species(ROS)play a pivotal role in the vicious cycle by regulating inflammation from upstream.Therefore,current therapies merely targeting inflammation show the failure of DED treatment.Here,a novel dual-atom nanozymes(DAN)-based eye drops are developed.The antioxidative DAN is successfully prepared by embedding Fe and Mn bimetallic single-atoms in N-doped carbon material and modifying it with a hydrophilic polymer.The in vitro and in vivo results demonstrate the DAN is endowed with superior biological activity in scavenging excessive ROS,inhibiting NLRP3 inflammasome activation,decreasing proinflammatory cytokines expression,and suppressing cell apoptosis.Consequently,the DAN effectively alleviate ocular inflammation,promote corneal epithelial repair,recover goblet cell density and tear secretion,thus breaking the DED vicious cycle.Our findings open an avenue to make the DAN as an intervention form to DED and ROSmediated inflammatory diseases.

关键词： Dry eye disease DAN Dual-atom nanozyme Vicious cycle NLRP3 inflammasome Nanomedicine