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Characteristics of life-cycle carbon dioxide emissions of arterial highway maintenance and the influencing factors

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Advances in Climate Change Research 2024年第4期15卷 751-765页

作者： Yao WANG Yuan-Qing WANG shu-juan JI Si-Jia SUN shu-Hong ma Ya-Nan GAO Key Laboratory of Transport Industry of management Control and Cycle Repair Technology for Traffic Network Facilities in Ecological Security Barrier Area Chang'an UniversityXi'an 710064China Guangzhou Aids to Navigation Office Southem Navigation Service CenterMaritime Safety AdministrationGuangzhou 51000China

With the focus of highway development transitioning from construction to maintenance,a comprehensive understanding of the characteristics and influencing factors of carbon dioxide(CO_(2))emissions from highway maintenance activities is crucial for formulating effective strategies to promote the low-carbon development of road ***,the quantitative relationships between CO_(2) emissions from highway maintenance schemes and factors such as pavement deterioration,traffic volume,and road grade remain unclear owing to a lack of compre-hensive,multi-category,and real *** real maintenance data from 340 arterial highway segments in China,this study conducts the life cycle assessment(LCA)to estimate CO_(2) emissions from maintenance activities and examines the primary emission sources among various structural layers and ***,multiple linear regression(MLR)analysis is conducted to investigate the impact of traffic volume,road grade,and pavement deterioration on CO_(2) emissions from maintenance projects,and factors influencing the early-stage degradation of pavement *** results demonstrate that average CO_(2) emissions from heavy rehabilitation projects are 6.97 times higher than those from medium rehabilitation *** from heavy rehabilitation projects exhibit a significantly negative linear relationship with the riding quality index(RQI)before maintenance(pmaintenance(pmaintenance(pmaintenance(p<0.05).The early-stage d

关键词： Life cycle assessment(LCA) Arterial highway maintenance Emission factor Pavement performance Traffic volume

Left-Right Non-Linear Dynamical Higgs

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Communications in Theoretical Physics 2016年第12期65卷 643-662页

作者： Jing shu juan Yepes State Key Laboratory of Theoretical Physics and Kavli Institute for Theoretical Physics China Institute of Theoretical Physics Chinese Academy of Sciences

All the possible CP-conserving non-linear operators up to the p^4-order in the Lagrangian expansion are analysed here for the left-right symmetric model in the non-linear electroweak chiral context coupled to a light dynamical Higgs. The low energy effects will be triggered by an emerging new physics field content in the nature, more specifically,from spin-1 resonances sourced by the straightforward extension of the SM local gauge symmetry to the larger local group SU(2)_L × SU(2)_R× U(1)_(B-L). Low energy phenomenology will be altered by integrating out the resonances from the physical spectrum, being manifested through induced corrections onto the left handed operators. Such modifications are weighted by powers of the scales ratio implied by the symmetries of the model and will determine the size of the effective operator basis to be used. The recently observed diboson excess around the invariant mass 1.8 TeV–2 TeV entails a scale suppression that suggests to encode the low energy effects via a much smaller set of effective operators.

关键词： left-right model nonlinear invariance CP symmetry SU(2)×SU(2)×U(1) effective Lagrangian Higgs couplings

LONG-TIME BEHAVIOR OF FINITE DIFFERENCE SOLUTIONS OF A NONLINEAR SCHRODINGER EQUATION WITH WEAKLY DAMPED

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Journal of Computational mathematics 2001年第4期19卷 393-406页

作者： Fa-yong Zhang shu-juan Lu Department of mathematics Heilongjiang UniversityHarbin 150080China Department of mathematics Beijing University of Aeronautics&AstronauticsBeijing 100083China

A weakly demped Schrodinger equation possessing a global attractor are considered. The dynamical properties of a class of finite difference scheme axe analysed. The exsitence of global attractor is proved for the discrete system. The stability of the difference scheme and the error estimate of the difference solution are obtained in the autonomous system case. Finally, long-time stability and convergence of the class of finite difference scheme also are analysed in the nonautonomous system case.

关键词： global attractor nonlinear Schrodinger equation finite difference method stibility and convergence

Effect of Nitric Oxide on the Interaction Between Mitochondrial malate Dehydrogenase and Citrate Synthase

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Journal of Integrative Agriculture 2014年第12期13卷 2616-2624页

作者： LIU Yu-chen WANG juan SU Pei-ying ma Chun-mei ZHU shu-hua College of Chemistry and material Science Shandong Agricultural University Department of Horticultural and Forest Engineer Heze University Tai’an Tumor Prevention and Treatment Hospital

Mitochondrial malate dehydrogenase （mMDH） and citrate synthase （CS） are sequential enzymes in Krebs cycle. mMDH, CS and the complex between mMDH and CS （mMDH＋CS） were treated with nitric oxide solution. The roles of notric oxide （NO） on the secondary structures and the interactions between mMDH and CS were studied using circular diehroism （CD） and Fourier transform surface plasmon resonance （FT-SPR）, respectivley. The effects of NO on the activities of mMDH, CS and mMDH＋CS were also studied. And the regulations by NO on mMDH and CS were simulated by PyMOL software. The results of SPR conifrmed that strong interaction between mMDH and CS existed and NO could signiifcantly regulate the interaction between the two enzymes. NO reduced the mass percents ofα-helix and increased that of random in mMDH, CS and mMDH＋CS. NO increased the activities of CS and mMDH＋CS, and inhibited the activity of mMDH. Graphic simulation indicated that covalent bond was formed between NO and Asn242 in active site of CS. However, there was no direct bond between NO and mMDH. The increase in activity of mMDH＋CS complex depended mostly on the interaction between NO and CS. All the results suggested that the regulations by NO on the activity and interaction between mMDH and CS were accord with the changes in mMDH, CS and mMDH＋CS caused by NO.

关键词： Krebs cycle nitric oxide surface plasmon resonance protein-protein interaction citrate synthase malate dehydrogenase

Dynamic adsorption of Xe on a fixed-bed adsorber at 77 K

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Nuclear Science and Techniques 2017年第8期28卷 89-96页

作者： Bin Long Jun-Li Li Qun-shu Wang shu-juan Feng Guo-Qing Zhou Tian-Cheng Feng Yan-Jie Tian Huai-Cheng ma Key Laboratory of Particle and Radiation Imaging of Ministry of Education Department of Engineering PhysicsTsinghua University Beijing 100084 China Northwest Institute of Nuclear Technology Xi'an 710024China

In designing a fixed-bed adsorber, it is vital to understand dynamic adsorption properties of the unit. Temperature is an important effect on adsorbent performance, as the dynamic adsorption coefficients tend to increase with decreasing temperature. To minimize the volume of the fixed-bed adsorber, the dynamic adsorption characteristics of Xe were studied at 77 K by employing a variety of adsorbents under different operational conditions. The carbon molecular sieve performed better than that of activated carbon. Both operational conditions and the presence of gaseous impurities were found to affect the adsorption properties.

关键词：固定床吸附器动态吸附性能动态吸附特性操作条件吸附系数碳分子筛 TEM 吸附量

The momentum distributions of triatomic molecular ion H_(3)^(2+) by intense laser pulses

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Communications in Theoretical Physics 2023年第6期75卷 112-119页

作者： Zhi-Xian Lei shu-juan Yan Xin-Yu Hao Pan ma Sheng-Peng Zhou Jing Guo Institute of Atomic and Molecular Physics Jilin UniversityChangchun 130012China

We investigate theoretically the photoionization of triatomic molecular ion H_(3)^(2+) by numerically solving the two-dimensional time-dependent Schrödinger equations under Bohn-Oppenheimer *** results show that the photoelectron momentum distributions(PMDs)of H_(3)^(2+) with different initial states are strongly dependent on the laser ellipticities and molecular orbital symmetry,and the PMDs of degenerate electronic states E^(±)are mirror ***,for degenerate electronic states E^(±),vortex structures appear in the PMDs by the counter-rotating circularly polarized laser pulses as the time delay between the two pulses increases,which can be explained by multicenter ionization and ultrafast photoionization model.

关键词： momentum distribution ringlike molecules intense laser fields

Distributed Reduced-order Optimal Fusion Kalman Filters for Stochastic Singular Systems

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自动化学报 2006年第2期32卷 286-290页

作者： SUN shu-Li ma Jing Department of Automation Heilongjiang University Harbin 150080

Based on the optimal fusion algorithm weighted by matrices in the linear minimum variance (LMV) sense, a distributed full-order optimal fusion Kalman filter (DFFKF) is given for discrete-time stochastic singular systems with multiple sensors, which involves the inverse of a high-dimension matrix to compute matrix weights. To reduce the computational burden, a distributed reduced-order fusion Kalman filter (DRFKF) is presented, which involves in parallel the inverses of two relatively low-dimension matrices to compute matrix weights. A simulation example shows the effectiveness.

关键词：多传感器信息融合 Kalman滤波随机奇异系统

Causes of epigastric pain and vomiting after laparoscopic-assisted radical right hemicolectomy-superior mesenteric artery syndrome

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World Journal of Gastrointestinal Surgery 2023年第2期15卷 193-200页

作者： juan Xie Jiao Bai Ting Zheng Jian shu ma-Li Liu Department of Radiology The Affiliated Hospital of Southwest Medical UniversityLuzhou 646000Sichuan ProvinceChina

BACKGROUND Superior mesenteric artery syndrome(SmaS)is a rare condition causing functional obstruction of the third portion of the *** SmaS following laparoscopic-assisted radical right hemicolectomy is even less prevalent and can often be unrecognized by radiologists and *** To analyze the clinical features,risk factors,and prevention of SmaS after laparoscopic-assisted radical right *** We retrospectively analyzed clinical data of 256 patients undergoing laparoscopicassisted radical right hemicolectomy in the Affiliated Hospital of Southwest Medical University from January 2019 to may *** occurrence of SmaS and its countermeasures were *** the 256 patients,SmaS was confirmed in six patients(2.3%)by postoperative clinical presentation and imaging *** six patients were examined by enhanced computed tomography(CT)before and after *** who developed SmaS after surgery were used as the experimental group.A simple random sampling method was used to select 20 patients who underwent surgery at the same time but did not develop SmaS and received preoperative abdominal enhanced CT as the control *** angle and distance between the superior mesenteric artery and abdominal aorta were measured before and after surgery in the experimental group and before surgery in the control *** preoperative body mass index(BMI)of the experimental group and the control group was *** type of lymphadenectomy and surgical approach in the experimental and control groups were *** differences in angle and distance were compared preoperatively and postoperatively in the experimental group *** differences in angle,distance,BMI,type of lymphadenectomy and surgical approach between the experimental and control groups were compared,and the diagnostic efficacy of the significant parameters was assessed using receiver operating characteristic *** In the experimental gro

关键词： Right hemicolectomy Superior mesenteric artery syndrome X-ray computed tomography

ZnO Additive Boosts Charging Speed and Cycling Stability of Electrolytic Zn–Mn Batteries

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Nano-Micro Letters 2024年第4期16卷 293-304页

作者： Jin Wu Yang Tang Haohang Xu Guandie ma Jinhong Jiang Changpeng Xian maowen Xu shu‑juan Bao Hao Chen Institute for Clean Energy&Advanced materials School of Materials and EnergySouthwest UniversityChongqing 400715People’s Republic of China

Electrolytic aqueous zinc-manganese(Zn–Mn) batteries have the advantage of high discharge voltage and high capacity due to two-electron reactions. However, the pitfall of electrolytic Zn–Mn batteries is the sluggish deposition reaction kinetics of manganese oxide during the charge process and short cycle life. We show that, incorporating ZnO electrolyte additive can form a neutral and highly viscous gel-like electrolyte and render a new form of electrolytic Zn–Mn batteries with significantly improved charging capabilities. Specifically, the ZnO gel-like electrolyte activates the zinc sulfate hydroxide hydrate assisted Mn^(2+) deposition reaction and induces phase and structure change of the deposited manganese oxide(Zn_(2)Mn_(3)O_8·H_(2)O nanorods array), resulting in a significant enhancement of the charge capability and discharge efficiency. The charge capacity increases to 2.5 mah cm^(-2) after 1 h constant-voltage charging at 2.0 V vs. Zn/Zn^(2+), and the capacity can retain for up to 2000 cycles with negligible attenuation. This research lays the foundation for the advancement of electrolytic Zn–Mn batteries with enhanced charging capability.

关键词： Electrolytic aqueous zinc-manganese batteries Electrolyte pH value ZnO electrolyte additive Fast constant-voltage charging ability