Search | Engineering

Subscribe Submit

Home Journals Focus Achievement Fronts About Us 中文版

Resource Type

Journal Article 37

Conference Videos 5

Year

2023 5

2022 8

2021 9

2020 3

2019 2

2017 1

2016 1

2011 3

2010 1

2008 3

2006 2

2005 1

2002 1

2001 1

open ︾

Keywords

China 2

6G 1

Active learning 1

Automatic 1

Blockchain 1

CO2 pipeline 1

Chemistry 1

Chromium 1

Coherent integration 1

Future outlook 1

High-speed targets 1

Location rotation transform (LRT) 1

Maneuvering target 1

Manpower 1

Marxist philosophy 1

Mechanism 1

Methods and technical platform 1

Non-uniform fast Fourier transform (NuFFT) 1

OCGS 1

open ︾

Search scope:

排序： Display mode:

Hexavalent chromium in drinking water: Chemistry, challenges and future outlook on Sn(II)- and photocatalyst-based

Haizhou Liu, Xuejun Yu

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 5, doi: 10.1007/s11783-020-1267-4

Abstract: Abstract • Wide occurrence of Cr(VI) in US source drinking water. • A strong dependence of occurrence on groundwater sources. • Elucidate Redox and equilibrium chemistry of Cr(VI). • Sn(II)-based and TiO2-based reductive treatments hold extreme promise. • Key challenges include residual waste, Cr(VI) re-generation and socioeconomic drivers. Chromium (Cr) typically exists in either trivalent and hexavalent oxidation states in drinking water, i.e., Cr(III) and Cr(VI), with Cr(VI) of particular concern in recent years due to its high toxicity and new regulatory standards. This Account presented a critical analysis of the sources and occurrence of Cr(VI) in drinking water in the United States, analyzed the equilibrium chemistry of Cr(VI) species, summarized important redox reaction relevant to the fate of Cr(VI) in drinking water, and critically reviewed emerging Cr(VI) treatment technologies. There is a wide occurrence of Cr(VI) in US source drinking water, with a strong dependence on groundwater sources, mainly due to naturally weathering of chromium-containing aquifers. Challenges regarding traditional Cr(VI) treatment include chemical cost, generation of secondary waste and inadvertent re-generation of Cr(VI) after treatment. To overcome these challenges, reductive Cr(VI) treatment technologies based on the application of stannous tin or electron-releasing titanium dioxide photocatalyst hold extreme promise in the future. To moving forward in the right direction, three key questions need further exploration for the technology implementation, including effective management of residual waste, minimizing the risks of Cr(VI) re-occurrence downstream of drinking water treatment plant, and promote the socioeconomic drivers for Cr(VI) control in the future.

Keywords： Chromium Chemistry Treatment Future outlook

HTML PDF Collect

The Achievement and Outlook of Engineering Sciences and Technology in China

Du Xiangwan

Strategic Study of CAE 2008, Volume 10, Issue 1, Pages 5-8

Abstract:

This paper reviewed the achievements which have been made in the engineering fields of energy and environment, aviation, IT industry, manufacture, scientific instruments and experimental apparatus in 2007. The development trends of engineering sciences and technology were also analyzed.

Keywords： engineering technology development trend achievement and outlook

HTML PDF Collect

EGG PRODUCTION IN CHINA: CURRENT STATUS AND OUTLOOK

Frontiers of Agricultural Science and Engineering 2021, Volume 8, Issue 1, Pages 25-34

Abstract:

• China is now the largest egg production country worldwide

• Egg production in China is characterized by diversity in several aspects

• China is now capable of breeding new varieties, with more than 50% of the market share

• Policies have been implemented to ensure sustainable development of egg production

• Integrating crop-chicken-vegetable production system is established

Eggs are one of the most nutritious and affordable animal products worldwide. From 1985, egg production in China has retained the leading place in the world. A total of 33 Mt of eggs were produced in 2019 representing ˃ 40% of the world total production. Egg production in China is characterized by diversity in several aspects, including layer breeds, products and production systems. New breeds and synthetic lines are developed to improve the genetic potentials of egg production and feed efficiency of layers. In the past, layer farms were run mostly by small households with 100 to 1000 layers per farm. Over the past decades, egg production in China has developed toward standardization and expansion of production systems, and many of these modern intensive farms raise millions of layers. Although the Chinese egg products maintain strong competitiveness over other animal products and imported egg products, the egg industry will grow at a slower pace compared to the past. Chinese consumers are more concerned about the quality and safety of eggs and egg products, as well as the environmental issues related to animal production, which presents challenges for the Chinese egg industry.

HTML PDF Collect

Science Outlook of Qian Xuesen

Feng Guorui

Strategic Study of CAE 2001, Volume 3, Issue 9, Pages 9-15

Abstract:

This article briefly explains the science outlook of Qian Xuesen.

Keywords： Qian Xuesen science outlook Marxist philosophy

HTML PDF Collect

Decoding the Complexity of Scientific Development Outlook

Miao Dongsheng

Strategic Study of CAE 2005, Volume 7, Issue 8, Pages 1-8

Abstract:

By development outlook is meant one's basic view on social development.

Keywords： development outlook complexity OCGS unit of opposites

HTML PDF Collect

HIGH-PERFORMANCE COMPUTATION AND ARTIFICIAL INTELLIGENCE IN PESTICIDE DISCOVERY: STATUS AND OUTLOOK

Frontiers of Agricultural Science and Engineering 2022, Volume 9, Issue 1, Pages 150-154 doi: 10.15302/J-FASE-2021419

HTML PDF Collect

The outlook of blockchain technology for construction engineering management

Jun WANG, Peng WU, Xiangyu WANG, Wenchi SHOU

Frontiers of Engineering Management 2017, Volume 4, Issue 1, Pages 67-75 doi: 10.15302/J-FEM-2017006

Abstract: Current construction engineering management suffers numerous challenges in terms of the trust, information sharing, and process automation. Blockchain which is a decentralised transaction and data management technology, has attracted increasing interests from both academic and industrial aspects since 2008. However, most of the existing research and practices are focused on the blockchain itself (i.e. technical challenges and limitations) or its applications in the finance service sector (i.e. Bitcoin). This paper aims to investigate the potential of applying blockchain technology in the construction sector. Three types of blockchain-enabled applications are proposed to improve the current processes of contract management, supply chain management, and equipment leasing, respectively. Challenges of blockchain implementation are also discussed in this paper.

Keywords： Blockchain contract management supply chain management equipment leasing

HTML PDF Collect

GLOBAL GENOMIC PREDICTION IN HORTICULTURAL CROPS: PROMISES, PROGRESS, CHALLENGES AND OUTLOOK

Frontiers of Agricultural Science and Engineering 2021, Volume 8, Issue 2,

Abstract:

Horticultural crops are a major source of high value nutritious food, and new improved cultivars developed through breeding are required for sustainable production in the face of abiotic and biotic stresses, and to deliver novel, premium products to consumers. However, grower confidence in the performance of new germplasm, particularly across environmental variability, is important for commercial adoption and germplasm-environment matching to optimize production.

HTML PDF Collect

Solar Geoengineering to Reduce Global Warming—the Outlook Remains Cloudy

Sean O’Neill

Engineering 2022, Volume 9, Issue 2, Pages 6-9 doi: 10.1016/j.eng.2021.12.005

HTML PDF Collect

50 Years of Missile and Space Cause in China

Zhao Shaokui

Strategic Study of CAE 2006, Volume 8, Issue 11, Pages 39-47

Abstract: Under the guidance of the scientific outlook on development and system science theory, the paper brings

Keywords： China missile space scientific development outlook game thinking

HTML PDF Collect

Present situation and outlook of coal mine equipment technique and manufacture in China

Pu Jin

Strategic Study of CAE 2011, Volume 13, Issue 11, Pages 15-19

Abstract:

In recent years, Chinese coal mine equipment manufacturing technology is growing rapidly, and a group of technology and equipment that represent the world's advanced level have been used successfully in the coal mine. The high-output and high-efficiency records are continuously refreshed; for a long period of time in the future, coal will dominate the main structure of non-renewable energy and it is difficult to change. Safe and efficient coal mining technology and equipment will continue to play an important role in the coal industry. The coal mine equipment with the characteristics of complete, integration, automation, intelligentize, informationize and greenization will be widely promoted and applied.

Keywords： coal mine equipment scientific innovation technological development

HTML PDF Collect

Catalysis of semihydrogenation of acetylene to ethylene: current trends, challenges, and outlook

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 7, Pages 1031-1059 doi: 10.1007/s11705-021-2113-3

Abstract: Ethylene is an important feedstock for various industrial processes, particularly in the polymer industry. Unfortunately, during naphtha cracking to produce ethylene, there are instances of acetylene presence in the product stream, which poisons the Ziegler–Natta polymerization catalysts. Thus, appropriate process modification, optimization, and in particular, catalyst design are essential to ensure the production of highly pure ethylene that is suitable as a feedstock in polymerization reactions. Accordingly, carefully selected process parameters and the application of various catalyst systems have been optimized for this purpose. This review provides a holistic view of the recent reports on the selective hydrogenation of acetylene. Previously published reviews were limited to Pd catalysts. However, effective new metal and non-metal catalysts have been explored for selective acetylene hydrogenation. Updates on this recent progress and more comprehensive computational studies that are now available for the reaction are described herein. In addition to the favored Pd catalysts, other catalyst systems including mono, bimetallic, trimetallic, and ionic catalysts are presented. The specific role(s) that each process parameter plays to achieve high acetylene conversion and ethylene selectivity is discussed. Attempts have been made to elucidate the possible catalyst deactivation mechanisms involved in the reaction. Extensive reports suggest that acetylene adsorption occurs through an active single-site mechanism rather than via dual active sites. An increase in the reaction temperature affords high acetylene conversion and ethylene selectivity to obtain reactant streams free of ethylene. Conflicting findings to this trend have reported the presence of ethylene in the feed stream. This review will serve as a useful resource of condensed information for researchers in the field of acetylene-selective hydrogenation.

Keywords： selectivity hydrogenation acetylene ethylene palladium

HTML PDF Collect

The Current Situation and Outlook of Scattered Metals

Zou Jiayan,Chen Shaochun

Strategic Study of CAE 2002, Volume 4, Issue 8, Pages 86-93

Abstract:

This paper summarizes the present situation and outlook of scattered metals(gallium, indium, germanium

Keywords： scattered metals resources industry market

HTML PDF Collect

Economy-oriented strategy of appropriate technique

CHEN Xiaoyang, ZHONG Dekun

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 4, Pages 371-378 doi: 10.1007/s11709-008-0047-1

Abstract: From angle of economy this paper tries to establish the outlook on appropriate technique effect by reconsidering

Keywords： outlook relevant appropriate technique innovation situation

HTML PDF Collect

Status quo and outlook of reconfigurable research

Li Yufeng,Qiu Han,Lan Julong

Strategic Study of CAE 2008, Volume 10, Issue 7, Pages 82-89

Abstract:

Today, with new services and applications blooming on the internet, to enable traditional routers to offer enough capability and speed of upgrade along with these services and applications in time would become even harder than ever. Run-time reconfiguration (RTR), based on the Field Programmable Gate Array (FPGA), is a new promising technology that can configure the partial or total hardware logic resources of a system at run time. Based on the technology, reconfigurable routers can support dynamic reconfiguration of new hardware logic for the new service, while keeping the other services still run properly, hence can provide a new possible solution to the update problem of the traditional routers. After introducing the basic concepts of RTR and the current development of the FPGA, this paper summarizes the past major research efforts with respect to the reconfigurable router, as well as the current work on it. Research directions and open problems are also discussed from the point of view of reconfigurable network.

Keywords： internet reconfigurable router reconfigurable network programmable hardware