scholarly journals Application of elbow inlet Revit modeling in BIM technology research of pumping station

2019 ◽  
Vol 136 ◽  
pp. 03030
Author(s):  
Yu Chengtao

With the development of computer technology and BIM technology in water conservancy engineering construction promotion and application. Many previously intractable problems have been solved by the introduction of new technology. BIM technology not only has a powerful information processing capability, but also provides the conditions for solving the problem of building refinement in the construction process. Revit software was used for modeling and parametric management in the project of Paihekou, which solved the problems of accurate calculation, three-dimensional view and fine template making

2014 ◽  
Vol 580-583 ◽  
pp. 2239-2243
Author(s):  
Jun Yi Shao ◽  
Dong Wang

Composite inorganic fiber spray technology was based on high-strength interfacial agent, then sprayed an appropriate mixed proportion of ultrafine diameter (D <4μm) composite inorganic fibers, adhesives, cement and other raw materials through a dedicated spray equipment on the building roof (ceiling) or flank, which formed a homogeneous, porous, durable and eco-friendly cover layer. The key technology is combined composite inorganic fiber sprays’ adhesive, mixing, porous, insulation and acoustic fireproof mechanism with three key technology working principles " high-strength interfacial agent sector coverage ", " composite inorganic fibers + adhesive multiple mixed spray " and " continuous overall seamless fireproof insulating layer ", to achieve integrate engineering effects of insulation, fastness, energy-efficient, sound-absorbing and homogeneous coverage. The new technology solves acoustic insulation problems of public buildings with fireproof requirements as: underground garage ceiling, elevator shafts and fire passage, etc.


2013 ◽  
Vol 427-429 ◽  
pp. 2851-2854 ◽  
Author(s):  
Yu Ping Qin

The virtual reality is an advanced technology in the modern man-made environment. A three-dimensional virtual reality world is produced by computer simulation to make users feel as if they were personally on the scene. By building the virtual model and virtual construction process, construction control and management based on the virtual reality system can be used to improve efficiency of project management and construction, ensure construction progress, save cost, improve safety and reduce engineering risk, so as to provide guidance for engineering construction.


2020 ◽  
Vol 198 ◽  
pp. 03027
Author(s):  
Zhang Wuchen ◽  
Wu Gaofeng ◽  
Wang Gang ◽  
Xing Lin ◽  
Li Mingfu

This paper puts forward some thoughts on the fine management of power transmission and transformation engineering construction with the help of three-dimensional technology, and discusses the installation, quality acceptance and construction organization deepening application of steel components in power transmission and transformation engineering construction.The physical 3D model is established by scanning technology, and the accuracy of machining components is checked by comparing the design model with the physical model. The construction process is simulated by the three-dimensional engineering management platform, and the problems existing in the actual construction are found, and the optimization of the construction organization design is carried out through the platform.


2012 ◽  
Vol 459 ◽  
pp. 450-453
Author(s):  
Hong Yuan Zhang ◽  
Ying Hong Liu

Water conservancy and hydropower projects are the important parts of national capital construction. Since the reform and opening up, it has been 30 years,construction trade develops fast and the construction market takes initial shape.Butwith the constant development of the reform and opening up and national economy,higher request is put forward in construction engineering and construction trade, withmany characteristics of large investment, long time, high construction difficulty, complicated technology and engineering participants in water conservancy and hydropower construction project, and many unforeseen factors occur in construction process. The engineering project is a high-risk construction process, and participants of engineering construction face all kinds of risks inevitably, so if we do not guard against it, this will cause the engineering construction not to go on smoothly, even cause serious consequences. Therefore, the risk management of engineering project is particularly important. To study the risk of construction projects, and to strengthen the risk management of construction engineering project, which can adapt to the objective demand of international construction market, and are good for national capital construction and national economic development.


2020 ◽  
Author(s):  
Hongfeng Sheng ◽  
Weixing Xu ◽  
Bin Xu ◽  
Hongpu Song ◽  
Di Lu ◽  
...  

UNSTRUCTURED The retrospective study of Taylor's three-dimensional external fixator for the treatment of tibiofibular fractures provides a theoretical basis for the application of this technology. The paper collected 28 patients with tibiofibular fractures from the Department of Orthopaedics in our hospital from March 2015 to June 2018. After the treatment, the follow-up evaluation of Taylor's three-dimensional external fixator for the treatment of tibiofibular fractures and concurrency the incidence of the disease, as well as the efficacy and occurrence of the internal fixation of the treatment of tibial fractures in our hospital. The results showed that Taylor's three-dimensional external fixator was superior to orthopaedics in the treatment of tibiofibular fractures in terms of efficacy and complications. To this end, the thesis research can be concluded as follows: Taylor three-dimensional external fixation in the treatment of tibiofibular fractures is more effective, and the incidence of occurrence is low, is a new technology for the treatment of tibiofibular fractures, it is worthy of clinical promotion.


2021 ◽  
Vol 11 (8) ◽  
pp. 3635
Author(s):  
Ioannis Liritzis ◽  
Pantelis Volonakis ◽  
Spyros Vosinakis

In the field of cultural heritage, three-dimensional (3D) reconstruction of monuments is a usual activity for many professionals. The aim in this paper focuses on the new technology educational application combining science, history, and archaeology. Being involved in almost all stages of implementation steps and assessing the level of participation, university students use tools of computer gaming platform and participate in ways of planning the virtual environment which improves their education through e-Learning. The virtual 3D environment is made with different imaging methods (helium-filled balloon, Structure for motion, 3D repository models) and a developmental plan has been designed for use in many future applications. Digital tools were used with 3D reconstructed buildings from the museum archive to Unity 3D for the design. The pilot study of Information Technology work has been employed to introduce cultural heritage and archaeology to university syllabuses. It included students with a questionnaire which has been evaluated accordingly. As a result, the university students were inspired to immerse themselves into the virtual lab, aiming to increasing the level of interaction. The results show a satisfactory learning outcome by an easy to use and real 3D environment, a step forward to fill in needs of contemporary online sustainable learning demands.


Pharmaceutics ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 358 ◽  
Author(s):  
Chiara R. M. Brambilla ◽  
Ogochukwu Lilian Okafor-Muo ◽  
Hany Hassanin ◽  
Amr ElShaer

Three-dimensional (3D) printing is a recent technology, which gives the possibility to manufacture personalised dosage forms and it has a broad range of applications. One of the most developed, it is the manufacture of oral solid dosage and the four 3DP techniques which have been more used for their manufacture are FDM, inkjet 3DP, SLA and SLS. This systematic review is carried out to statistically analyze the current 3DP techniques employed in manufacturing oral solid formulations and assess the recent trends of this new technology. The work has been organised into four steps, (1) screening of the articles, definition of the inclusion and exclusion criteria and classification of the articles in the two main groups (included/excluded); (2) quantification and characterisation of the included articles; (3) evaluation of the validity of data and data extraction process; (4) data analysis, discussion, and conclusion to define which technique offers the best properties to be applied in the manufacture of oral solid formulations. It has been observed that with SLS 3DP technique, all the characterisation tests required by the BP (drug content, drug dissolution profile, hardness, friability, disintegration time and uniformity of weight) have been performed in the majority of articles, except for the friability test. However, it is not possible to define which of the four 3DP techniques is the most suitable for the manufacture of oral solid formulations, because the selection is affected by different parameters, such as the type of formulation, the physical-mechanical properties to achieve. Moreover, each technique has its specific advantages and disadvantages, such as for FDM the biggest challenge is the degradation of the drug, due to high printing temperature process or for SLA is the toxicity of the carcinogenic risk of the photopolymerising material.


2017 ◽  
Vol 8 (2) ◽  
pp. 196-202 ◽  
Author(s):  
Kirsten Rose-Felker ◽  
Joshua D. Robinson ◽  
Carl L. Backer ◽  
Cynthia K. Rigsby ◽  
Osama M. Eltayeb ◽  
...  

Background: Computed tomographic angiography (CTA) and echocardiography (echo) are used preoperatively in coarctation of the aorta to define arch hypoplasia and great vessel branching. We sought to determine differences in quantitative measurements, as well as surgical utility, between modalities. Methods: Infants (less than six months) with both CTA and echo prior to coarctation repair from 2004 to 2013 were included. Measurements were compared and correlated with surgical approach. Three surgeons reviewed de-identified images to predict approach and characterize utility. Computed tomographic angiography radiation dose was calculated. Results: Thirty-three patients were included. No differences existed in arch measurements between echo and CTA ( z-score: −2.59 vs −2.43; P = .47). No differences between modalities were seen for thoracotomy ( z-score: −2.48 [echo] vs −2.31 [CTA]; P = .48) or sternotomy ( z-score: −3.13 [echo] vs −3.08 [CTA]; P = .84). Computed tomographic angiography delineated great vessel branching pattern in two patients with equivocal echo findings ( P = .60). Surgeons rated CTA as far more useful than echo in understanding arch hypoplasia and great vessel branching in cases where CTA was done to resolve anatomical questions that remain after echo evaluation. Two of three surgeons were more likely to choose the surgical approach taken based on CTA (surgeon A, P = .02; surgeon B, P = .01). Radiation dose averaged 2.5 (1.6) mSv and trended down from 2.9 mSv (1.8 mSv; n = 20) to 1.6 mSv (0.5 mSv; n = 7) ( P = .06) with new technology. Conclusion: Although CTA and echo measurements of the aorta do not differ, CTA better delineates branching and surgeons strongly prefer it for three-dimensional arch anatomy. We recommend CTA for patients with anomalous arch branching patterns, diffuse or complex hypoplasia, or unusual arch morphology not fully elucidated by echo.


2015 ◽  
Vol 43 (2) ◽  
Author(s):  
Ritsuko Kimata Pooh ◽  
Asim Kurjak

AbstractRecent development of three-dimensional (3D) high definition (HD) ultrasound has resulted in remarkable progress in visualization of early embryos and fetuses in sonoembryology. The new technology of HDlive assesses both structural and functional developments in the first trimester with greater reliably than two-dimensional (2D) ultrasound. The ability to visualize not only fetal face, hands, fingers, feet, and toes, but also amniotic membranes, is better with volumetric ultrasound than 2D ultrasound. In this article, detailed and comprehensive structures of normal and abnormal fetuses depicted by 3D HDlive are presented, including various faces of Down’s syndrome and holoprosencephaly, as well as low-set ear and finger/toe abnormalities from the first trimester. Three-dimensional HDlive further “humanizes” the fetus, enables detailed observation of the fetal face in the first trimester as shown in this article, and reveals that a small fetus is not more a fetus but a “person” from the first trimester. There has been an immense acceleration in understanding of early human development. The anatomy and physiology of embryonic development is a field where medicine exerts greatest impact on early pregnancy at present, and it opens fascinating aspects of embryonic differentiation. Clinical assessment of those stages of growth relies heavily on 3D/four-dimensional (4D) HDlive, one of the most promising forms of noninvasive diagnostics and embryological phenomena, once matters for textbooks are now routinely recorded with outstanding clarity. New advances deserve the adjective “breathtaking”, including 4D parallel study of the structural and functional early human development.


2014 ◽  
Vol 935 ◽  
pp. 151-154 ◽  
Author(s):  
Sivakumar Naganathan ◽  
Charan Singh Jasbir Singh ◽  
Yim Wil Shen ◽  
Peng Eng Kiat ◽  
Sivadass Thiruchelvam

Nanotechnology can be used for design and construction processes in many areas since nanotechnology generated products have many unique characteristics. These characteristics can significantly fix current construction problems, and may change the requirement and organization of the construction process. This paper reviews the basic concept of nanotechnology, different types of nanomaterial and their manufacturing process as well as the applications of nanotechnology in different fields such as concrete, pavement engineering, construction materials. Use of nanotechnology is found to offer high performing and efficient materials. Specific application areas include water and waste water treatment, construction materials etc. The use of nanotechnology in civil engineering is still in infancy stage. The production methods, pollutions caused to human health, manufacturing difficulties, performance are the issues to be addressed in order to use the nanotechnology in civil engineering.


Sign in / Sign up

Export Citation Format

Share Document