检索结果-南通市图书馆

Mass and Heat Transfer Enhancement of Chemical Heat Pumps

在线全文

学校读者我要写书评

暂无评论

Journal of Thermal Science 1993年第3期2卷 228-230页

作者： gui-ping lin Xiu-Gan Yuan Refrigeration and air Conditioning Institute, Beijing University of Aeronautics and Astronautics, Beijing 100083, China Refrigeration and air Conditioning Institute Beijing University of Aeronautics and Astronautics Beijing China

An inert additive, expanded graphite (EG), has been prepared and used to enhance the heat and mass transfer process of chemical heat pumps. The effects of mixing ratio and mixing method on the chemical reaction time a... 详细信息

关键词： chemical heat pump solid-gas reaction heat and mass transfer enhancement inert additive expanded graphite

The　Feasibility　Study　of　the　Waste　Heat　Air－Conditioning　System　for　Automobile

在线全文

学校读者我要写书评

暂无评论

Journal of Thermal Science 1994年第2期3卷 126-129页

作者： gui-ping lin Xiu-gan Yuan Zhi-guang Mei(Air-Conditioning and Refrigeration Institute, Beijing University of Aeronautics and Astronautics, Beijing 100083) Air-Conditioning and Refrigeration Institute Beijing University of Aeronautics and Astronautics Beijing

In this paper, the feasibility of application of a solid-absorption system using ammonia and chlorides as working pair to automobile air-conditioning system is investigated. This system has the advantages of minimum environmental problem and utilizing waste heat from the automobile engine as thermal energy input. Analyses show that the main problem associated with the application of solid-absorption system is the size of the reactors. Techniques to solve this problem are discussed.

关键词： air-conditioning waste heat automobile.

Offload Strategy for Edge Computing in Satellite Networks Based on Software Defined Network

在线全文

学校读者我要写书评

暂无评论

Computers, Materials & Continua 2025年第1期82卷 863-879页

作者： Zhiguo Liu Yuqing gui lin Wang Yingru Jiang Communication and Network Laboratory Dalian UniversityDalian116622China College of Environment and Chemical Engineering Dalian UniversityDalian116622China

Satellite edge computing has garnered significant attention from researchers;however,processing a large volume of tasks within multi-node satellite networks still poses considerable *** sharp increase in user demand for latency-sensitive tasks has inevitably led to offloading bottlenecks and insufficient computational capacity on individual satellite edge servers,making it necessary to implement effective task offloading scheduling to enhance user *** this paper,we propose a priority-based task scheduling strategy based on a Software-Defined Network(SDN)framework for satellite-terrestrial integrated networks,which clarifies the execution order of tasks based on their ***,we apply a Dueling-Double Deep Q-Network(DDQN)algorithm enhanced with prioritized experience replay to derive a computation offloading strategy,improving the experience replay mechanism within the Dueling-DDQN ***,we utilize the Deep Deterministic Policy Gradient(DDPG)algorithm to determine the optimal resource allocation strategy to reduce the processing latency of *** results demonstrate that the proposed d3-DDPG algorithm outperforms other approaches,effectively reducing task processing latency and thus improving user experience and system efficiency.

关键词： Satellite network edge computing task scheduling computing offloading

Observation of acoustic hybrid topological phases induced by the p-d orbital interactions

维普期刊数据库评论

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(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 132-139页

作者： Xiao Xiang Feng Gao Yu-gui Peng Peng Wu Zong-lin Li Xue-Feng Zhu School of Physics and Innovation Institute Huazhong University of Science and Technology

In spinless systems,growing attention has recently been attracted to synthetic gauge fields,which redefine the fundamental crystal symmetries by utilizing the projective algebraic ***,synthetic gauge fields have been commonly investigated in single orbital systems,and explorations on hybrid orbitals remain elusive in ***,we report the experimental observation of hybrid topological phases induced by hybrid synthetic gauge flux,which is formed by the interaction between p and d orbitals embedded in acoustic *** breaking the translation symmetries of Lxand/or Ly,we unambiguously demonstrate the first-order M?bius edge states and higher-order corner *** work establishes a platform for seeking exotic topological phases induced by hybrid-orbitals interactions and initializing the framework of hybrid-orbitalsrelated topological *** applications can be anticipated in scenarios such as high-quality sensing and robust wave trapping due to the stepwise energy distribution of the hybrid topological phase.

关键词： topological insulator synthetic gauge field projective symmetry corner states

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

轨道约束对铁路桥梁纵向地震反应特性的影响

铁道学报 2002年第5期24卷 124-128页

作者：黄艳阎贵平刘林北方交通大学土木建筑工程学院北京100044

采用非线性弹簧单元模拟道床的纵向位移阻力关系,建立了地震作用下桥梁与轨道共同作用的线桥一体化模型,分析轨道约束对铁路桥梁纵向抗震性能的影响。研究表明,在地震中当桥墩刚度相近时,轨道约束对桥墩是有利的;当桥墩刚度相差较大时,... 详细信息

采用非线性弹簧单元模拟道床的纵向位移阻力关系,建立了地震作用下桥梁与轨道共同作用的线桥一体化模型,分析轨道约束对铁路桥梁纵向抗震性能的影响。研究表明,在地震中当桥墩刚度相近时,轨道约束对桥墩是有利的;当桥墩刚度相差较大时,轨道约束对刚度较大桥墩有时是不利的。文章还分析了道床阻力、桥梁跨数等因素对桥梁抗震的影响。

关键词：影响铁路桥梁轨道约束纵向地震反应

Heart rate variability biofeedback decreases blood pressure in prehypertensives by improving autonomic function and baroreflex

在线全文

学校读者我要写书评

暂无评论

Heart rate variability biofeedback decreases blood pressure ...

中国生理学会第23届全国会员代表大会暨生理学学术大会

作者： gui-ping lin,Shu-Zhen WANG,Sheng WANG,Si-Juan CHEN,Yan ZHAO,Ting-Huai WANG~* Department of Physiology,Zhongshan Medical School,Sun Yat-Sen University,Guangzhou 510080,China

＜正＞Prehypertension（blood pressure（BP） ranged 120/80-139/89 mmHg） is a new category designated by the Seventh Report of the Joint National Committee on Prevention,Detection,Evaluation and Treatment of High Blood Pressure（JNC-7） in *** with prehypertension are at risk of hypertension and cardiovascular diseases,while the efficient intervention still *** biofeedback（HRV-BF）,also known as respiratory sinus arrhythmia（RSA） biofeedback,involves slowing the breathing rate to the frequency at which amplitude of HRV is *** indicates that HRV-BF increases HRV and baroreflex sensitivity（BRS） while reducing related pathological symptoms,suggesting a potentially beneficial effect on ***,little is known about this intervention on *** this study,we investigated the effects of HRV-BF on prehypertension and explored its mechanisms.43 prehypertensives were recruited and classified into three categories:HRV biofeedback group,slow abdominal breathing group and control *** groups were assessed with noninvasive blood pressure（BP）,BRS,Respiration and Galvanic Skin Response（GSR） at pre-intervention,the entire process of each sessions,5-week post-intervention and 3-month *** showed that the incidence of prehypertension was as high as 14.5%even in young college *** with prehypertension were lower in BRS（7.5±5.2 ms/mmHg） and HRV（lgSDNN=1.62±0.13 ms,lgTP=8.02±0.55 ms2） than those with normal blood pressure （BRS=18.4±7.4ms/mmHg,lgSDNN=1.79±0.10ms,lgTP=8.68±0.85 ms2）.HRV biofeedback reduced blood pressure （from 131.7±8.7 / 79.3±4.7 mmHg to 118.9+7.3 mmHg / 71.9±4.9 mmHg,P＜0.01）,increased BRS（from 7.0±5.9 ms/mmHg to 15.8±5.3 ms/mmHg,P＜0.01） and increased HRV（lgSDNN from 1.61±0.11 to 1.75±0.05 ms, and lgTP from 8.07±0.54 to 9.08±0.41 ms2,P＜0.01）.These effects were more obvious than slow breathing group,and remained at least three ***-BF significantly increased vagus-associated HRV indic

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

《庄子》精神生态隐喻的英译叙事重构

东北师大学报（哲学社会科学版） 2025年第1期 134-142页

作者：周桂君林琳东北师范大学外国语学院吉林长春130024 沈阳化工大学外国语学院辽宁沈阳110142

隐喻言说是《庄子》话语特色之一,其中不乏体现主体与其生存环境同构互动的精神生态隐喻。本文对此种隐喻进行界定并提出识别程序,选取《庄子》精神生态隐喻英译实例,探究何种叙事重构方法能将《庄子》原文有关精神生态的隐喻叙事内容... 详细信息

隐喻言说是《庄子》话语特色之一,其中不乏体现主体与其生存环境同构互动的精神生态隐喻。本文对此种隐喻进行界定并提出识别程序,选取《庄子》精神生态隐喻英译实例,探究何种叙事重构方法能将《庄子》原文有关精神生态的隐喻叙事内容更好地被译入语读者群接受并认可,进而将原文的精神生态内涵在异域文化中得以传递。《庄子》精神生态隐喻主要有喻体源于自然意象和非自然意象等两类。前者的英译可遵照选择性采用的诗化叙事重构方法,后者的英译宜采取人物事件再定位的语境重构策略。聚焦《庄子》中精神生态隐喻的译介叙事重构研究,可对以生态思想外译为导向的《庄子》英译实践与研究提供参考。

关键词：精神生态隐喻隐喻识别叙事重构选择性采用人物事件再定位

维普期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

CDM在太阳能光伏发电产业中的应用研究

建筑科学 2008年第4期24卷 44-48页

作者：王侃宏王丽辉崔坚桂林平河北工程大学河北邯郸056038 西北综合勘探设计研究院陕西西安710003

本文从太阳能光伏发电系统的组成和运行方式入手,以河北省太阳能利用状况为基础,分析了太阳能光伏发电产业面临的一系列障碍和清洁发展机制(CDM)项目的引入对避免这些障碍的作用。其次,以邯郸市1座1 MW太阳能光伏并网发电站为例,计算了... 详细信息

本文从太阳能光伏发电系统的组成和运行方式入手,以河北省太阳能利用状况为基础,分析了太阳能光伏发电产业面临的一系列障碍和清洁发展机制(CDM)项目的引入对避免这些障碍的作用。其次,以邯郸市1座1 MW太阳能光伏并网发电站为例,计算了其年减排量,并对发电收益、CDM项目收益和发电站成本进行了比较及论证。结果表明河北省太阳能有很大的利用空间,应用太阳能光伏发电技术有利于减少温室气体的排放,CDM项目的实施有助于光伏产业的发展。

关键词：太阳能光伏发电清洁发展机制减排

傅里叶变换红外光谱结合化学计量学方法对白酒基酒的快速定性和定量分析

在线全文

学校读者我要写书评

暂无评论

光谱学与光谱分析 2017年第9期37卷 2756-2762页

作者：孙宗保辛新邹小波吴建峰孙莹石吉勇唐群勇沈丹萍桂翔林斌江苏大学食品与生物工程学院江苏镇江212013 江苏今世缘酒业股份有限公司江苏涟水223411 江苏大学农业工程研究院江苏镇江212013

白酒基酒等级的准确评判对白酒的质量控制至关重要,是白酒分级储存和勾兑的重要依据。目前白酒基酒分级是在生产车间班组工人初步分级基础上,通过专业评酒人员的人工感官审评结合气相色谱法测定主要酯类物质含量最终确定白酒基酒的等级... 详细信息

白酒基酒等级的准确评判对白酒的质量控制至关重要,是白酒分级储存和勾兑的重要依据。目前白酒基酒分级是在生产车间班组工人初步分级基础上,通过专业评酒人员的人工感官审评结合气相色谱法测定主要酯类物质含量最终确定白酒基酒的等级。人工感官审评和气相色谱分析方法繁琐,耗时费力,很难实现实时快速检测。红外光谱技术具有快速分析、无损检测及灵敏度高和重现性好等优点,在食品品质检测领域得到广泛应用。运用傅里叶变换红外光谱(FTIR)和衰减全反射(ATR)技术结合化学计量学方法对不同等级白酒基酒及其主要酯类化合物进行快速定性和定量分析。采用线性判别(LDA)和误差反向传播人工神经网络(BPANN)分析模型对不同等级白酒基酒进行判别,线性判别分析训练集和测试集总体识别率均达到100%,BPANN分析训练集和测试集总体识别率均在95%以上。采用区间偏最小二乘法(siPLS)对四种主要酯类化合物进行定量分析,己酸乙酯、乳酸乙酯、乙酸乙酯和丁酸乙酯含量的训练集模型相关系数分别为0.986 4,0.991 5,0.970 2和0.951 4,测试集模型的相关系数分别为0.982 4,0.961 9,0.905 2和0.808 0。结果表明,傅里叶变换红外光谱技术结合化学计量学方法能有效实现不同等级白酒基酒的准确判别,同时基酒中主要酯类化合物的快速检测定量模型效果良好,能满足白酒生产中的分析检测要求,为白酒基酒等级的快速判别提供一种客观而准确的分析方法,有效提升白酒的智能化生产水平。

关键词：红外光谱白酒基酒化学计量学等级酯类化合物