Search | Engineering

订阅投稿

首页工程期刊工程焦点工程成就工程前沿关于我们 English

资源类型

期刊论文 31

会议视频 1

年份

2023 4

2021 5

2020 2

2019 2

2018 1

2017 1

2016 4

2015 2

2014 1

2012 2

2010 3

2007 1

2003 1

展开︾

关键词

商用车 2

新能源 2

CO₂ 捕集 1

催化裂化 1

充/换电站 1

内球配位 1

再生 1

军民商一体化 1

冬季奥林匹克运动会 1

动力总成 1

单乙醇胺 1

发动机 1

发展趋势 1

吸附 1

外部性 1

异构烷烃 1

既有商品住宅 1

模型验证 1

民用航空运输；商用飞机；低碳发展；高效化；智慧化 1

展开︾

检索范围：

排序：展示方式：

Chemical characteristics of fine particulate matter emitted from commercial cooking

Bing PEI,Hongyang CUI,Huan LIU,Naiqiang YAN

《环境科学与工程前沿（英文）》 2016年第10卷第3期页码 559-568 doi: 10.1007/s11783-016-0829-y

摘要： The chemical characteristics of fine particulate matter (PM ) emitted from commercial cooking were explored in this study. Three typical commercial restaurants in Shanghai, i.e., a Shanghai-style one (SHS), a Sichuan-style one (SCS) and an Italian-style one (ITS), were selected to conduct PM sampling. Particulate organic matter (POM) was found to be the predominant contributor to cooking-related PM mass in all the tested restaurants, with a proportion of 69.1% to 77.1%. Specifically, 80 trace organic compounds were identified and quantified by gas chromatography/mass spectrometry (GC/MS), which accounted for 3.8%–6.5% of the total PM mass. Among the quantified organic compounds, unsaturated fatty acids had the highest concentration, followed by saturated fatty acids. Comparatively, the impacts of other kinds of organic compounds were much smaller. Oleic acid was the most abundant single species in both SCS and ITS. However, in the case of SHS, linoleic acid was the richest one. ITS produced a much larger mass fraction of most organic species in POM than the two Chinese cooking styles except for monosaccharide anhydrides and sterols. The results of this study could be utilized to explore the contribution of cooking emissions to PM pollution and to develop the emission inventory of PM from cooking, which could then help the policy-makers design efficient treatment measures and control strategies on cooking emissions in the future.

关键词： commercial cooking PM_2.5 chemical characteristics organic matter

HTML PDF 收藏

Comparison of CNT-PVA membrane and commercial polymeric membranes in treatment of emulsified oily wastewater

Gang Yi, Xinfei Fan, Xie Quan, Shuo Chen, Hongtao Yu

《环境科学与工程前沿（英文）》 2019年第13卷第2期 doi: 10.1007/s11783-019-1103-x

摘要：

CNT-PVA membrane was fabricated and compared with polymeric membranes.

The separation performance was evaluated by homemade and cutting fluid emulsions.

The three membranes show similar oil retention rates.

CNT-PVA membranes have higher permeation fluxes compared with polymeric membranes.

CNT-PVA membrane shows higher fouling resistance.

关键词： Oily wastewater Microfiltration Carbon nanotube membrane Commercial polymeric membrane

HTML PDF 收藏

Effectiveness of ten commercial maize cultivars in inducing Egyptian broomrape germination

Xiaoxin YE,Jinnan JIA,Yongqing MA,Yu AN,Shuqi DONG

《农业科学与工程前沿（英文）》 2016年第3卷第2期页码 137-146 doi: 10.15302/J-FASE-2016098

摘要： Egyptian broomrape (EB), , is a devastating root parasite, causing enormous crop losses around the world. Maize has the potential to influence the growth of other plants through releasing certain allelochemicals and is able to induce germination of at least three broomrape species. To determine whether maize could be used as a trap crop for EB, 10 maize cultivars were tested for their ability to induce EB germination. The results showed that maize cultivars can induce EB germination, and that germination rates in a cut-root experiment and a hydroponic experiment were consistent. Maize cvs Changcheng 799 and Zhengdan 958 induced the highest EB germination rates, while cvs Luyu 13 and Zhengyu 203 were the least effective. These four maize cultivars were further studied in a pot experiment. Rhizosphere soil, rhizosphere soil extracts, root extracts and shoot extracts from these cultivars were all able to induce EB germination, with cv. Changcheng 799 inducing the highest germination rates. Root extracts generally induced higher germination rates than shoot extracts. It is suggested that Changcheng 799 could be planted as a trap crop for control of EB.

关键词： allelopathy Egyptian broomrape maize seed germination trap crop

HTML PDF 收藏

Approaching the commercial threshold of solar water splitting toward hydrogen by III-nitrides nanowires

《能源前沿（英文）》 doi: 10.1007/s11708-023-0870-z

摘要： Approaching the commercial threshold of solar water splitting toward hydrogen by III-nitrides nanowires

关键词： threshold solar water splitting hydrogen III

HTML PDF 收藏

A method to predict cooling load of large commercial buildings based on weather forecast and internal

Junbao JIA,Jincheng XING,Jihong LING,Ren PENG

《能源前沿（英文）》 2016年第10卷第4期页码 459-465 doi: 10.1007/s11708-016-0424-8

摘要： Considering the fact that customers of large commercial buildings have the characteristics of the higher density and randomness, this paper presented an air-conditioning cooling load prediction method based on weather forecast and internal occupancy density. The multiple linear feedback regression model was applied to predict, with precision, the air conditioning cooling load. Case analysis showed that the largest mean relative error of hourly and the daily predicting cooling load maximum were 18.1% and 5.14%, respectively.

关键词： commercial building load prediction multiple linear regression

HTML PDF 收藏

DEVELOPMENT OF AN AUTOMATIC WEIGHING PLATFORM FOR MONITORING BODYWEIGHT OF BROILER CHICKENS IN COMMERCIAL

《农业科学与工程前沿（英文）》 2023年第10卷第3期页码 363-373 doi: 10.15302/J-FASE-2023510

摘要：

● An automatic weighing system for monitoring bodyweight of broilers was developed.

关键词： automatic weighing weight monitoring floor housing uniformity precision poultry farming

HTML PDF 收藏

Comparison between two commercial uranium resins and a uranyl sulphate imprinted resin based on self-assembling

LIU Yaochi, XU Wei, XU Weijian, LIU Hanmao, ZHANG Xiaowen

《化学科学与工程前沿（英文）》 2007年第1卷第4期页码 327-331 doi: 10.1007/s11705-007-0059-8

摘要： In recent years, resins prepared via molecular imprinting technology have received considerable attention owing to their recognition and selective adsorption. This paper deals with the comparative investigation between a uranyl sulphate imprinted ion-exchange based on self-assembling molecular imprinting technology and two kinds of commercial uranium resins (the medium pore resin D263 and strong base resin 201×7). The studies were focused on their kinetics performance, adaptability toward pH, and performance of saturation and elution in laboratory-scale column. The results show that the imprinted ion exchange resin has the fast kinetics, high adaptability toward pH, and good adsorption and elution performance.

关键词： saturation molecular imprinting imprinting technology adaptability commercial

HTML PDF 收藏

The size distribution of airborne bacteria and human pathogenic bacteria in a commercial composting plant

《环境科学与工程前沿（英文）》 2021年第15卷第3期 doi: 10.1007/s11783-020-1356-4

摘要：

•Bacterial concentrations from eight stages were 10⁴–10⁵copies/m³.

关键词： Size distribution Airborne bacteria Biological diversity Human pathogenic bacteria Composting plants

HTML PDF 收藏

DSM in an area consisting of residential, commercial and industrial load in smart grid

Balasubramaniyan SARAVANAN

《能源前沿（英文）》 2015年第9卷第2期页码 211-216 doi: 10.1007/s11708-015-0351-0

摘要： With the latest introduction of the demand side management (DSM) in smart grids, the power distribution units are able to modify the load schedules of the consumers. This involves a co-operative interaction of the utility and the consumers so as to achieve customer load modifications in which the customer, utility and society all are benefited. The interaction is performed with the help of the devices known as the smart meter. This paper shows the use of game theory and logical mathematical expressions in order to achieve the objectives. The objectives are to minimize the peak to average ratio (PAR) and the energy cost. The outcome of the game between supplier and customers helps to shape the load profile. The design proposed in this paper is very user-friendly and is based on simple logarithmic programming computations. In this paper, residential, commercial and industrial types of loads are taken into account. A basic 24 h load schedule along with the fluctuating prices at each hour of the day is forecasted by the supplier of the various shiftable and non-shiftable loads and then that schedule is conveyed to the user. The users are encouraged to shift their high load devices to off-peak hours which will not only reduce their electricity costs but also substantially reduce the PAR in the load demand.

关键词： demand side management (DSM) smart grids peak to average ratio (PAR) smart meters and logarithmic price function

HTML PDF 收藏

燃料电池商用车产业发展现状与展望

谭旭光, 余卓平

《中国工程科学》 2020年第22卷第5期页码 152-158 doi: 10.15302/J-SSCAE-2020.05.019

摘要：

面对全球严峻的节能减排与能源紧缺形势，国内外都将燃料电池汽车作为汽车行业的未来战略方向，高能耗高排放的商用车技术变革更显迫切。本文分析了国内外燃料电池汽车产业的发展动态，梳理了主要国家在燃料电池汽车开发和推广过程中所采取的各项举措，总结了我国燃料电池汽车产业发展的优势与面临的问题。研究表明，基于国家级产业引导政策，燃料电池汽车发展路线应以商用车为主；针对制约燃料电池商用车发展的因素，建议通过顶层设计，出台产业专项规划以明确产业发展的方向、目标和重点；强化燃料电池关键共性技术研发突破，解决制约产业快速发展的瓶颈问题，推动燃料电池汽车产业高质量发展。

关键词：燃料电池商用车氢能新能源

HTML PDF 收藏

电动商用车系统工程技术体系及关键技术研究

孙逢春,何洪文

《中国工程科学》 2018年第20卷第1期页码 59-67 doi: 10.15302/J-SSCAE-2018.01.009

摘要：

发展新能源汽车是世界共识，以纯电驱动为特点的新能源汽车被确定为我国的战略性新兴产业和“中国制造2025”重点领域。本文对我国电动商用车发展的历程和技术路线、特点等进行了综述，结合北京奥运会“零排放区24 h不间断安全运行”的需求背景，系统提出并明确了“电动商用车系统工程”的内涵，就其三大核心组成要素“电动商用车平台、充/换电站、运营监控”及其关键技术，分别进行了研究分析。最后，针对我国新能源汽车2020年500万辆级规模应用和2022年北京冬季奥林匹克运动会–25 ℃环境下的应用需求，探讨了电动商用车系统工程体系化升级的抓手，目标是真正实现纯电动商用车“性能优越、技术无短板、推广应用无禁区”。

关键词：电动商用车充/换电站运营监控系统工程冬季奥林匹克运动会

HTML PDF 收藏

潍柴商用车动力系统创新发展及未来展望

谭旭光

《中国工程科学》 2019年第21卷第3期页码 122-126 doi: 10.15302/J-SSCAE-2019.03.008

摘要：

本文从四个阶段系统介绍了潍柴20年发展走过的自主创新历程；结合商用车动力系统核心技术研发，阐述了对商用车动力系统创新发展的理解和典型经验；从高效低排放内燃机、新能源和智能网联技术等方面，对商用车未来发展进行了展望，分享了潍柴在传统能源、新能源方面的未来规划和做法。

关键词：自主创新发动机商用车动力总成新能源

HTML PDF 收藏

既有居住建筑节能改造外部性及其量化研究

赵琰,刘晓君

《中国工程科学》 2014年第16卷第10期页码 100-105

摘要：

既有商品住宅节能改造具有一定程度的外部性，阻碍了节能改造的深入开展。通过分析节能改造外部性的产生原因和外部性表现，建立外部性测算方法，为外部性内部化，构建节能改造外部性偿还机制提供必要依据。采用经济学理论与方法对既有商品住宅节能改造外部性的产生和表现等进行了分析，在识别外部性供体与受体的基础上，提出了节能改造外部性的测算方法。通过案例分析论证了外部性测算方法的适用性。结果表明，应减轻或消除外部性对节能改造的影响，采取必要手段将节能改造外部性内部化，构建统一的节能改造外部性测算方法，建立节能改造外部性偿还与节能量交易机制。

关键词：既有商品住宅节能改造外部性测算