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Nucleation and Growth Processes During Molecular-Beam Epitaxy of Ternary Compounds

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Chinese Physics Letters 1996年第11期13卷 855-858页

作者： MAO hui-bing Department of Materials Science Fudan UniversityShanghai 200433

In this letter the effect of the different migration rates of two kinds of cations on the nucleation and growth processes during molecular-beam epitaxy of ternary systems was studied in detail by Monte Carlo *** AlGaAs ternary system,in which the migration rate of cation Ga is larger than that of Al,there are three types of nucleation:Ga-Ga,Al-Ga and Al-Al,which show different characteristics in the growth processes.

关键词： ternary simulation Ternary

N_2O emissions from a cultivated Andisol after application of nitrogen fertilizers with or without nitrification inhibitor under soil moisture regime

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Journal of Environmental Sciences 2004年第5期16卷 735-737页

作者： FANXiao-hui HaruoTsuruta InstituteofSoilScience ChineseAcademyofSciencesNanjing210008China NationalInstituteofAgro-EnvironmentalSciences Kannondai3-1-1Tsukuba305Japan

The aim of this work was to examine the emission of N 2O from soils following addition of nitrogen fertilizer with a nitrification inhibitor(+inh) or without the nitrification inhibitor(-inh) at different soil water regime. Higher soil moisture contents increased the total N 2O emissions in all treatments with total emissions being 7 times larger for the CK and >20 times larger for the fertilizer treatments at 85% WFPS(soil water filled pore space) than at 40% WFPS. The rates of N 2O emissions at 40% WFPS under all treatments were small. The maximum emission rate at 55% WFPS without the nitrification inhibitor(-inh) occurred later (day 11) than those of 70% WFPS (-inh) samples (day 8). The inhibition period was 4—22 d for 55% WFPS and 1—15 d for 70% WFPS comparing the rates of N 2O emissions treated (+inh) with (-inh). The maximum emission rates at 85% WFPS were higher than those at the other levels of soil water content for all treatments. The samples(+inh) released less N 2O than (-inh) samples at the early stage. Nevertheless, N 2O emissions from (+inh) samples lasted longer than in the (-inh) treatment. Changes in mineral N at 55%, 70% and 85% WFPS followed the same pattern. NH + 4-N concentrations decreased while NO - 3-N concentrations increased from the beginning of incubation. NH + 4-N concentrations from 40% WFPS treatment declined more slowly than those of the other three levels of soil water content. Nitrification was faster in the (-inh) samples with 100% NH + 4-N nitrified after 22 d(50% WFPS) and 15 d(70% and 85% WFPS). N 2O emissions increased with soil water content. Adding N-fertilizer increased emissions of N 2O. The application of the nitrification inhibitor significantly reduced total N 2O emissions from 30.5%(at 85%WFPS) to 43.6%(at 55% WFPS).

关键词： N 2O emission nitrification inhibitor soil water content upland soil samples

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蓝碳交易认证及运行机制的挑战与应对

北京科技大学学报（社会科学版） 2025年第1期41卷 61-68页

作者：朱晖赵佳齐大连海洋大学海洋法律与人文学院大连116023

重启全国温室气体自愿减排交易市场是蓝碳纳入自愿碳市场的重要契机,但蓝碳交易制度体系仍处在初步发展阶段,缺乏完善的配套措施。我国蓝碳交易制度仍然存在交易规则功能缺失、定价机制失范、交易方式欠缺和核查监管机制不足等问题。为... 详细信息

重启全国温室气体自愿减排交易市场是蓝碳纳入自愿碳市场的重要契机,但蓝碳交易制度体系仍处在初步发展阶段,缺乏完善的配套措施。我国蓝碳交易制度仍然存在交易规则功能缺失、定价机制失范、交易方式欠缺和核查监管机制不足等问题。为保证蓝碳交易在法律规制下运行,构建公开、透明、可预期的蓝碳交易机制,应实现蓝碳交易的功能完善、规范定价机制,同时推动交易方式多元发展、健全核查机构监管机制以优化蓝碳交易运行机制,从而搭建蓝碳交易纳入自愿碳市场的规则体系。

关键词：蓝碳 CCER 交易规则定价机制监管机制

A bioinspired strategy for assembling graphene oxide sheets into high-performance graphene films

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Science China Chemistry 2018年第12期61卷 1475-1476页

作者： hui-Ming Cheng Tsinghua-Berkeley Shenzhen Institute Tsinghua University Shenyang National Laboratory for Materials Science Institute of Metal Research Chinese Academy of Sciences

Since 2004,graphene has attracted intense attention from the scientific and industrial communities due to its extraordinary properties,such as ultrahigh strength and remarkable electrical *** production of high-quality gra- phene materials can be achieved by chemical vapor deposition and chemical exfoliation,and their applications have been widely explored [1-3].

关键词： bioinspired strategy assembling graphene oxide sheets graphene films

Stochastic Resonance for a SQUID with Dichotomous Resistance

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Chinese Physics Letters 2014年第3期31卷 30-33页

作者： LI Jing-hui Faculty of Science Ningbo University Ningbo 315211

We investigate the response to the ac current for a superconducting quantum interference device （SQUID） with a dichotomous resistance. It is shown that, for some suitably selected parameters＇ values, stochastic resonance appears for the amplitude of the stationary average voltage of the SQUID versus the correlation time of the dichotomous noise. Our result can provide some useful insights for the investigation of the response of the SQUID （especially for the ones with the nano junctions） to the temporal-periodic signal （including the input ac current, the irradiation microwave, the detected temporal-periodic signal, and the added ac voltage）.

关键词： SUPERCONDUCTING quantum interference devices RESEARCH STOCHASTIC resonance SIGNAL-to-noise ratio -- Research LINEAR systems PHYSICS research

Control of Fractal Erosion of Safe Basins in a Holmes-Duffing System via Delayed Position Feedback

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Chinese Physics Letters 2011年第1期28卷 36-38页

作者： SHANG hui-Lin School of Mechanical and Automation Engineering Shanghai Institute of Technology Shanghai 200235

A linear delayed position feedback control is applied to control the erosion of safe basins in a Holmes-Duffing system. The conditions of fractal erosion of the safe basin of the controlled system on the basis that the range of time delay leading to good control is obtained by the Melnikov method. It is found that the increasing time delay can reduce the basin erosion under a weak and positive feedback g^in. Then the evolutions of safe basins with time delay are presented in detail by the fourth Runge-Kutta and Monte-Carlo methods, which shows that the safe basin of the controlled Holmes Dulling system can be expanded, and its fractal can be reduced by the increasing time delay. These results suggest that delayed position feedbacks can be used as a good approach to control the erosion of safe basins.

关键词： Computational physics Statistical physics and nonlinear systems

BIFURCATION AND DYNAMICS OF THIN SLIPPING FILMS UNDER THE INFLUENCE OF INTERMOLECULAR FORCES

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Journal of Hydrodynamics 2006年第2期18卷 248-252页

作者： HU Guo-hui Shanghai Institute of Applied Mathematics and Mechanics Shanghai University Shanghai 200072 China

The effects of the Born repulsive force on the stability and dynamics of ultra-thin slipping films under the influences of intermolecular forces are investigated with bifurcation theory and numerical simulation. Results show that the repulsive force has a stabilizing effect on the development of perturbations, and can suppress the rupture process induced by the van der Waals attractive force. Although slippage will enhance the growth of disturbances, it does not have influence on the linear cutoff wave number and the final shape of the film thickness as time approaches to infinity.

关键词： ultra-thin film dewetting Navier slip boundary condition

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深度学习在心力衰竭检测中的应用综述

计算机科学与探索 2025年第1期19卷 65-78页

作者：王永威魏德健曹慧姜良山东中医药大学智能与信息工程学院

随着生物医学技术的发展，利用生物信号进行心力衰竭的早期诊断已成为提高患者生存率和降低治疗成本的关键策略。在此背景下，深度学习技术的迅猛发展为心力衰竭检测开辟了新路径。系统地综述了深度学习在心力衰竭检测中的最新进展和应... 详细信息

随着生物医学技术的发展，利用生物信号进行心力衰竭的早期诊断已成为提高患者生存率和降低治疗成本的关键策略。在此背景下，深度学习技术的迅猛发展为心力衰竭检测开辟了新路径。系统地综述了深度学习在心力衰竭检测中的最新进展和应用。概述了心力衰竭检测涉及的主要生物医学信号和公开数据集。详细分析了深度学习在心力衰竭诊断领域的应用及其发展，特别是对卷积神经网络和长短期记忆网络处理心电图、心率变异性、心音等关键生物医学信号的能力进行了深入分析，总结了这些技术的优势、局限性，并对各类模型性能进行了比较。探讨了通过融合多种人工智能技术所构建的混合模型在提升检测精度和模型泛化能力方面的潜力，以及如何利用模型的可解释性来增加检测过程的透明度，提升医生的信任度。最后总结了当前研究存在的不足，并对未来研究方向提出展望，强调了跨学科合作在推动心力衰竭检测技术进步中的重要性。

关键词：心力衰竭生物医学信号深度学习卷积神经网络循环神经网络混合模型

Construction of Ni single-atom coordinated with doped N and S elements for mild hydrogenation of methyl acrylate to methyl propionate

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Nano Research 2025年第1期18卷 217-224页

作者： Taolue Sun Chen Jian Gang Wang hui Zhao Guoliang Zhang Zengxi Li Chunshan Li State Key Laboratory of Mesoscience and Engineering CAS Key Laboratory of Green Process and EngineeringBeijing Key Laboratory of Ionic Liquids Clean ProcessInstitute of Process EngineeringChinese Academy of SciencesBeijing 100190China School of Chemical Engineering University of Chinese Academy of SciencesBeijing 100049China huizhou Institute of Green Energy and Advanced Materials Huizhou 516081China Advanced Energy Science and Technology Guangdong Laboratory Huizhou 516081China

Although the nickel-based catalyst is able toexhibit comparative catalytic activity to noble metal formethyl acrylate hydrogenation,it requires strict reactioncondition,which can be improved by regulation ofcoordination *** this study,we constructed akind of Ni single-atom coordinated with N and S(Ni-NSC)through the pyrolysis of organic Ni-based precursors at600℃.The existence and fine structure of Ni single-atom were confirmed by the spherical electron microscopicobservation in combination with the X-ray absorption spectroscopy(XAS)*** addition,the catalytichydrogenation assessment suggested that the as-prepared Ni-NSC catalyst exhibited higher activity and stability than theNi/NSC supported catalyst prepared by incipient wetness impregnation *** remarkable catalytic activity was dueto the high dispersion and density of Ni single-atom and weak adsorption energy of intermediates on these Ni sites.

关键词： methyl acrylate mild hydrogenation Ni single-atom coordination environment adsorption energy