194 results
Search Results
2. The construction and evaluation of secretory expression engineering bacteria for the trans-Cry3Aa-T-HasA fusion protein against the Monochamus alternatus vector.
- Author
-
Xiaohong Han, Chenyan Huang, Huan Qi, Yukun Zhu, Xinran Hu, Yingxin Wen, Yirong Long, Lei Xu, and Feiping Zhang
- Subjects
CHIMERIC proteins ,PINEWOOD nematode ,TOXINS ,CONIFER wilt ,WESTERN immunoblotting ,BACTERIA ,ENGINEERING - Abstract
Pine wood nematode disease is currently the most deadly forest disease in China, and the Monochamus alternatus is its primary vector. Controlling the M. alternatus is crucial for managing pine wood nematode disease. This study, based on the selected HasA (pGHKW4) secretory expression vector, used electroporation to combine the genetically modified high-toxicity toxin Cry3Aa-T with the entomopathogenic bacterium Yersinia entomophaga isolated from the gut of the M. alternatus. The SDS-PAGE and Western blotting techniques were employed to confirm the toxin protein's secretion capability. The engineered bacteria's genetic stability and effectiveness in controlling M. alternatus were assessed for their insecticidal activity. The results of the SDSPAGE and Western blotting analyses indicate that the HasA system effectively expresses toxin protein secretion, demonstrates certain genetic stability, and exhibits high insecticidal activity against M. alternatus. This study constructed a highly toxic entomopathogenic engineered bacterial strain against M. alternatus larvae, which holds significant implications for controlling M. alternatus, laying the foundation for subsequent research and application of this strain. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
3. A Review of Deep Learning Applications in Tunneling and Underground Engineering in China.
- Author
-
Su, Chunsheng, Hu, Qijun, Yang, Zifan, and Huo, Runke
- Subjects
DEEP learning ,TUNNELS ,MACHINE learning ,SUBWAY tunnels ,INFORMATION technology ,UNDERWATER tunnels ,ENGINEERING - Abstract
With the advent of the era of big data and information technology, deep learning (DL) has become a hot trend in the research field of artificial intelligence (AI). The use of deep learning methods for parameter inversion, disease identification, detection, surrounding rock classification, disaster prediction, and other tunnel engineering problems has also become a new trend in recent years, both domestically and internationally. This paper briefly introduces the development process of deep learning. By reviewing a number of published papers on the application of deep learning in tunnel engineering over the past 20 years, this paper discusses the intelligent application of deep learning algorithms in tunnel engineering, including collapse risk assessment, water inrush prediction, crack identification, structural stability evaluation, and seepage erosion in mountain tunnels, urban subway tunnels, and subsea tunnels. Finally, it explores the future challenges and development prospects of deep learning in tunnel engineering. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
4. Recent development and engineering practices of space grid structures in China.
- Author
-
Luo, Yaozhi and Xue, Yu
- Subjects
- *
LARGE space structures (Astronautics) , *STRUCTURAL engineering , *STRUCTURAL engineers , *MAKERSPACES , *ENGINEERING - Abstract
Space grid structures are widely used in the field of structural engineering due to their good mechanical properties and simple construction procedures. This paper reviews the development of space grid structures and mainly introduces the development of space grid structures in China in recent years. Some typical applications of space grid structures are introduced and the technical developments are summarized. It shows that China not only has a large number of engineering applications of space grid structures, but also a rapid development of related technologies. Finally, some prospects for space grid structures are discussed. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
5. The development and engineering practice of building cable structures in China.
- Author
-
Chen, Zhihua
- Subjects
- *
DOMES (Architecture) , *CABLE structures , *ENGINEERING - Abstract
This paper introduces the development process of building cable structures in China over the past 70 years according to three stages: the initial, slow, and rapid development. It also summarizes the types of cable components and joints of building cable structures. The structural characteristics and representative projects of suspension, cable membrane, beam string (cable-supported), and cable dome structures are reviewed in this paper. Finally, the achievements and prospects of cable structures in China are discussed. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
6. From Industry 4.0 to Construction 4.0: barriers to the digital transformation of engineering and construction sectors.
- Author
-
Wang, Kaiyang, Guo, Fangyu, Zhang, Cheng, and Schaefer, Dirk
- Subjects
DIGITAL transformation ,EXPLORATORY factor analysis ,INDUSTRY 4.0 ,CONSTRUCTION project management ,CONSTRUCTION industry ,ENGINEERING ,PARTIAL least squares regression - Abstract
Purpose: The purpose of this study is to systematically identify, assess, and categorize the barriers to digital transformation (DT) in the engineering and construction sectors, and thus to better understand the impact and how these sectors might be overcome. Design/methodology/approach: This study adopted a sequential mixed qualitative and quantitative data collection and analysis approach. DT barriers were first identified from relevant literature and verified by an expert panel. Then, a questionnaire survey assessing the impacts of the identified DT barriers was distributed to construction professionals in China, and 192 valid responses were retrieved. Further, the data obtained were analyzed using ranking analysis, exploratory factor analysis (EFA), and partial least squares-structural equation modeling (PLS-SEM). Findings: Based on the ranking analysis, the top three barriers are "lack of industry-specific standards and laws," "lack of clear vision, strategy and direction for DT," and "lack of support from top management for DT." EFA enabled the grouping of the 26 barriers into 3 categories: (1) lack of laws and regulations (LLR), (2) lack of support and leadership (LSL), and (3) lack of resources and professionals (LRP). The PLS-SEM analysis revealed that LLR, LSL, and LRP were found to have significant negative impacts on DT. Originality/value: These findings contribute to the body of knowledge on DT in the construction industry and help construction firms and government bodies improve the understanding of these barriers to DT and put forward relevant policies and incentives, thus seizing the DT benefits as a way to enhance construction project management. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
7. Researchers at Huanggang Normal University Report Research in Engineering (Fault Diagnosis for Modular Multilevel Converter Switching Devices via Multimodal Attention Fusion).
- Subjects
FAULT diagnosis ,RESEARCH personnel ,UNIVERSITY research ,HIGH voltages ,ENGINEERING ,DIAGNOSIS methods - Abstract
Researchers at Huanggang Normal University in China have developed a novel multimodal attention fusion (MAF) model for fault diagnosis in modular multilevel converters (MMCs) used in high voltage direct current (HVDC) transmission projects. The MAF model combines time series and visual attention models to extract fault features from the internal circulating currents of the MMCs. The researchers found that the MAF model achieved fault diagnosis accuracies of 98.4% and 97.3% on two different datasets, outperforming existing methods. This research contributes to improving the security and reliability of MMCs in HVDC transmission systems. [Extracted from the article]
- Published
- 2023
8. Qingdao University of Technology Researcher Has Provided New Study Findings on Building Construction (The Application of Extended Reality Technology in Architectural Design Education: A Review).
- Subjects
ARCHITECTURAL education ,BUILDING design & construction ,ARCHITECTURAL design ,RESEARCH personnel ,TEACHER effectiveness - Abstract
A new study conducted by researchers at Qingdao University of Technology in China explores the use of extended reality (XR) technology in architectural education. The study examines the applications and outcomes of XR technology in construction education over the past five years and highlights its potential benefits and drawbacks. The research concludes that XR technology has a significant impact on teacher effectiveness, student motivation, reflection and improvement, and teacher-student communication. It suggests that XR technology may increasingly replace conventional teaching techniques in architectural classrooms. [Extracted from the article]
- Published
- 2023
9. Research on Tissue Engineering Detailed by Researchers at Affiliated Drum Tower Hospital of Nanjing University Medical School (Developing engineering technologies for the treatment of systemic lupus erythematosus).
- Subjects
TISSUE engineering ,RESEARCH personnel ,UNIVERSITY hospitals ,MEDICAL schools ,AUTOIMMUNE diseases ,SYSTEMIC lupus erythematosus ,ENGINEERING - Abstract
Researchers at the Affiliated Drum Tower Hospital of Nanjing University Medical School in China have conducted research on tissue engineering for the treatment of systemic lupus erythematosus (SLE), a complex autoimmune disease that affects multiple organs and tissues. The researchers highlight the need for novel treatments for SLE, as only a few new drugs have been approved for the disease since the 1950s. They discuss the potential of engineering technologies such as tissue engineering, organs-on-chips, and intelligent delivery systems, including engineered nanocarriers and cell-based therapies, in addressing the limited treatment options for SLE. The research aims to provide insights into the application and challenges of engineering technologies in SLE treatment. [Extracted from the article]
- Published
- 2023
10. New Engineering Study Findings Recently Were Published by Researchers at Yanshan University (Multi-Stage Information Spreading Model in Simplicial Complexes Driven by Spatiotemporal Evolution of Public Health Emergency).
- Subjects
RESEARCH personnel ,PUBLIC health ,ENGINEERING - Abstract
A recent study conducted by researchers at Yanshan University in China explores the impact of public health emergencies on the spread of information. The study focuses on the spatiotemporal evolution of public health emergencies and its effect on individuals' behaviors. The researchers analyze the dynamics of information spreading in simplicial complexes and find that the strength of interactions plays a significant role in expanding the impact and scale of information spread. The study also suggests that the worsening or improvement of public health emergencies in different regions can further enlarge the impact and scale of information spread. This research provides valuable insights into understanding the relationship between public health emergencies and information spreading. [Extracted from the article]
- Published
- 2023
11. Patent Application Titled "Polypeptide And Application Thereof In Bone Repair" Published Online (USPTO 20230357321).
- Subjects
PATENT applications ,PATENT offices ,INTERNET publishing ,TISSUE scaffolds ,TISSUE engineering - Abstract
A patent application titled "Polypeptide And Application Thereof In Bone Repair" has been published online by the US Patent and Trademark Office. The patent application, filed by inventors from Sichuan University in China, describes a polypeptide called GS18 that has been synthesized to promote bone repair. GS18 can be used in conjunction with tissue engineering scaffolds to treat various types of bone defects. The polypeptide has shown promising results in promoting osteogenesis and bone formation in pre-clinical studies. It is considered a low-cost and versatile therapeutic agent with potential clinical applications. [Extracted from the article]
- Published
- 2023
12. The little things matter: Chemists develop new sensor for microvolume pH detection.
- Subjects
SOIL pollution ,CHEMISTS ,DETECTORS ,RESEARCH personnel ,EARLY detection of cancer - Abstract
Scientists from Xi'an Jiaotong-Liverpool University in China have developed a new method for measuring pH in small volumes of samples. The current methods for measuring pH are not sensitive enough or too fragile for commercial use. The researchers have created a pH sensor using microfluidic channels and electrodes made of light-responsive layered materials and metals. This sensor can accurately detect minor variations in pH and has potential applications in various fields, including cancer detection and identifying contamination in soil. The team is currently seeking collaborations with industry developers to integrate the technology into lab equipment. [Extracted from the article]
- Published
- 2023
13. Study Findings from Dalian Minzu University Advance Knowledge in Electronics (BCAFL: A Blockchain-Based Framework for Asynchronous Federated Learning Protection).
- Subjects
ASYNCHRONOUS learning ,RESEARCH personnel ,COLLABORATIVE learning ,POISONING ,RESEARCH funding - Abstract
A study conducted by researchers at Dalian Minzu University in China has developed a blockchain-based framework called BCAFL for protecting asynchronous federated learning. The framework addresses the issue of low training efficiency in synchronous methods and incentivizes participation. It also introduces mechanisms to handle low-quality model providers and malicious party poisoning attacks, enhancing the reliability and efficiency of collaborative learning. In testing, BCAFL achieved an accuracy of approximately 90% in 20 rounds and reduced accuracy loss by 20% when subjected to data poisoning attacks. The research was funded by the Fundamental Research Funds For The Central Universities. [Extracted from the article]
- Published
- 2023
14. Crucial Development Technologies for Volcanic Hydrocarbon Reservoirs: Lessons Learned from Asian Operations.
- Author
-
Liu, Songxia, Zhang, Yaoyuan, Wu, Qilin, Ayers, Walter B., Wang, Yanquan, and Ott, William K.
- Subjects
HORIZONTAL wells ,HYDROCARBON reservoirs ,GAS condensate reservoirs ,GAS reservoirs ,PETROLEUM reservoirs ,DRAG (Hydrodynamics) ,VOLCANIC ash, tuff, etc. ,HYDRAULIC fracturing - Abstract
Oil and gas reservoirs in volcanic rocks are a particular type of unconventional reservoir and present unique challenges for exploration and production engineers. To help the oil industry understand volcanic reservoirs and solutions to complex development problems, we reviewed their key engineering technologies as well as their geological characteristics. The distinctive geological characteristics of volcanic hydrocarbon reservoirs are strong heterogeneity, low porosity and permeability, complex fracture systems, etc. The volcanic reservoir rock types in order of hydrocarbon abundance are basalt (38.5%), andesite (15.9%), volcaniclastic (12.1%), and rhyolite (11.5%). The porosity ranges from 0.1 to 70%, and permeability ranges from 0.0007 to 762 md. In some commercially developed volcanic reservoirs of China, the average porosity is 7.7–13%; the average permeability is 0.41–3.4 md. Engineers have applied a variety of adapted technologies to produce volcanic reservoir economically. Horizontal wells can increase production and reserves by 4–6 times those of vertical wells, and longer wells are preferred. Specialized hydraulic fracturing techniques are suggested, including small or mixed proppant size, second HF treatment after proppant slugging, high-viscosity frac fluid with high-temperature resistance, special fluid loss reducer, high pump pressure, Extreme Overbalance Perforating, limited-entry fracturing, matrix acidizing, etc. Water control measures include producing below critical rates, partial perforation or penetration, controlling hydraulic fracture height, using horizontal wells, implementing complete cementing job, etc. Well productivity evaluation should be conducted to understand well performance and appropriately allocate production rates among wells, using the modified AOF method and other productivity prediction models considering breakdown fracture gradient, gas slippage effect, non-Darcy effect, etc. Well sites need to be selected based on recognizing profitable lithologies, lithofacies, high porosity and permeability, relatively developed fracture systems, thick net pay zones, etc. The critical questions for the industry are how to enhance volcanic reservoir recovery with more efficient and economic hydraulic fracturing and water control techniques. This is one of the first papers systematically summarizing the engineering technologies and unique solutions to develop volcanic reservoirs. Further and more complete reviews can be carried out in the future, and more novel and effective techniques can be explored and tested in the field. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
15. Research on Suitability Evaluation of Urban Engineering Construction Based on Entropy Weight Hierarchy-Cloud Model: A Case Study in Xiongan New Area, China.
- Author
-
Gao, Yi-Hang, Han, Bo, Miao, Jin-Jie, Jin, Shuang, and Liu, Hong-Wei
- Subjects
ENTROPY ,RESEARCH evaluation ,URBAN planning ,URBAN growth ,ENGINEERING ,CONSTRUCTION projects - Abstract
The development of Xiongan New Area in Hebei Province, China, as a significant national choice, has considerable strategic significance for the integrated growth of Beijing, Tianjin, and Hebei. This paper proposes a cloud model for the suitability evaluation of the construction of Xiongan New Area based on entropy weight analysis, taking into account the geological conditions, groundwater environment, environmental geological problems, and other factors of the suitability of image city development. According to the research, the suitability evaluation findings for the project building employing the cloud model are in strong accord with those of the traditional model and have some application potential. The evaluation's findings indicate that the project construction in Xiongan New Area is acceptable, with suitable and relatively suitable sites making up 81.4% of the total area and excellent circumstances for project development, construction, and usage. This study offers helpful direction for Xiongan New Area's urban land-space design and serves as a useful point of comparison for studies looking at the viability of other deep Quaternary Plain region engineering buildings. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
16. Owner-based benefit evaluation of BIM applications in China's engineering projects.
- Author
-
Li, Xiaojuan, Zhang, Zhou, Jim, C.Y., Lai, Jiyu, and Chen, Xueqing
- Subjects
BUILDING information modeling ,LITERATURE reviews ,SHOPPING centers ,ENGINEERING ,CONSTRUCTION industry - Abstract
Purpose: This paper aims to establish a model to evaluate the benefits of building information modeling (BIM) from the owners' perspective. The model analyzes the correlation between five secondary benefit indicators and their subsystems: product, financial, organizational, management and strategic. The final key factors of BIM benefits provide a decision-making basis for owners to raise the efficiency of BIM application. Design/methodology/approach: Firstly, the authors combed 31 BIM-related literature and interviewed experts to identify 15 preliminary benefit indicators. The authors established a BIM benefit evaluation system based on relevant concepts, including two primary indicators, five secondary indicators and 15 tertiary indicators. Secondly, the authors analyzed the indicators by the extension theory of matter element analysis and a questionnaire survey of expert opinion. Finally, the new method was applied to a case study of a large shopping center in east China for empirical verification. Findings: A BIM benefit evaluation model, including a three-tiered hierarchy of primary, secondary and tertiary indicators, was constructed through literature review and expert opinions. The model determined the critical factors of BIM benefits, enhanced understanding of owner benefits and improved BIM application under the owners' leadership. Originality/value: At present, most studies focus on specific project stages or benefit indicators. This study developed an integrated BIM benefit evaluation system that targets owners. The findings could foster the development of China's construction industry, promote owner-led BIM application and advocate adopting the benefit evaluation method. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
17. Teaching system transformation of logistics engineering major from the perspective of smart economy: an empirical study from China.
- Author
-
He, Yang, Liu, Weihua, Shi, Xiaoran, and Gao, Peiyuan
- Subjects
COLLEGE majors ,EMPIRICAL research ,CHINA studies ,ENGINEERING ,LOGISTICS ,STUDENT participation - Abstract
The technology and service modes of logistics industry are changing greatly in smart economy, and innovation is becoming new development engine, which promotes the urgent transformation requirement of teaching system of logistics engineering majors in universities. Based on the data from logistics engineering majors in Chinese universities in 2021, a relevant study on the undergraduate logistics engineering major is carried out. Along with 'ability-motivation-opportunity' (AMO) theory, this paper analyses the influence of ability, motivation and opportunity on the transformation. The current situation of teaching system, the existing problems and the improvement measures are investigated. Based on the above analysis, this paper puts forward the relevant suggestions to promote the cultivation of innovative talents, mainly including planning and designing the training programme system for logistics engineering major, placing more emphasis on logistics practice courses, promoting undergraduate students' participation in various logistics contests, and increasing the level of teaching investment and guarantee. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
18. Overall Design of Xingguo Test Line of Suspended Permanent Maglev Monorail Transportation System.
- Author
-
LI Xiaofei and LI Jisheng
- Subjects
MAGNETIC levitation vehicles ,SYSTEMS engineering ,TEST design ,TRANSPORTATION engineering ,MANUFACTURING processes ,ENGINEERING ,INTELLIGENT transportation systems - Abstract
In order to promote the development and application process of suspended permanent maglev monorail transportation system, China has built suspended permanent maglev monorail transportation system engineering test line, Xingguo engineering test line, and the line has made useful explorations on many key technologies in the engineering process of the system. The key technical contents such as the overall layout of the test line, the suspension guidance and drive system, track beam and turnout, manufacturing process, which are different compared to the permanent maglev monorail transit and the conventional rubber wheel suspended monorail transit, are studied emphatically in this paper. The research shows that, under the premise of meeting the basic requirements of the test line, the reasonable overall layout reduces the land and engineering investment at the greatest extent. The innovative design of core systems, such as permanent maglev, realizes the stable suspension guidance and drive of the test line vehicles, and the design of key systems such as track beam bridge, turnout and processes lays the foundation for the safe operation of the test line. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
19. Microseismic Monitoring Technology Developments and Prospects in CCUS Injection Engineering.
- Author
-
Meng, Lingbin, Zheng, Jing, Yang, Ruizhao, Peng, Suping, Sun, Yuan, Xie, Jingyu, and Li, Dewei
- Subjects
- *
OPTICAL disks , *RESEARCH & development projects , *GREENHOUSE gas mitigation , *ENGINEERING - Abstract
CO2 geological storage projects are an essential tool for China to achieve the double carbon target of energy savings and emission reductions. In order to safely and effectively control the implementation of injection projects and monitor the dynamics of CO2 injection, multi-dimensional and multi-disciplinary monitoring tools are required. Among them, microseismic monitoring is a key technology for predicting reservoir dynamics and reflecting reservoir geomechanical behavior. Such monitoring has been carried out previously for reservoirs in other countries, but experimental projects are also gradually being developed in China. In this paper, we focus on the research and analysis results of microseismic monitoring of carbon storage projects in various work areas. For different reservoir conditions, we explore combinations of the monitoring implementation methods in China, comparing the differences in each work area. We propose a joint well and ground microseismic monitoring method and a multi-spatial and multi-physical field coupling research system for use in the implementation of domestic demo projects for the future research and development of microseismic monitoring of carbon storage projects. The monitoring program can meet the requirements for certain periodic repeated or continuous observations and can intelligently assess the risk and handle the alert behavior. The foundation is laid for the development of the future microseismic monitoring technology to achieve the goal of developing cost-controllable, permanent, and real-time monitoring equipment. The application of the monitoring system in China has been effective, and this experience can contribute to the development of injection engineering in the future. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
20. New Mathematical Biosciences and Engineering Study Findings Have Been Reported by Researchers at North University of China (A region-adaptive non-local denoising algorithm for low-dose computed tomography images).
- Subjects
COMPUTED tomography ,LIFE sciences ,ENGINEERING ,IMAGE denoising ,ALGORITHMS - Abstract
Keywords: Algorithms; Computed Tomography; Imaging Technology; Life Sciences; Mathematical Biosciences and Engineering; Technology EN Algorithms Computed Tomography Imaging Technology Life Sciences Mathematical Biosciences and Engineering Technology 2023 FEB 18 (NewsRx) -- By a News Reporter-Staff News Editor at Medical Imaging Week -- New research on mathematical biosciences and engineering is the subject of a new report. Algorithms, Computed Tomography, Imaging Technology, Life Sciences, Mathematical Biosciences and Engineering, Technology. [Extracted from the article]
- Published
- 2023
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.