Comparisons between New and Traditional NDT Devices and Control Methods for Construction Quality of Highway Subgrade

Author(s):  
P. Xu ◽  
F. M. Wang ◽  
X. L. Li ◽  
Y. C. Cai
2012 ◽  
Vol 226-228 ◽  
pp. 1386-1389
Author(s):  
Wen Tao Rong

Construction quality is one of the main reasons which lead to the failure of cement deep mixing pile. In order to ensure the construction quality of cement deep mixing pile and control its construction process, the influence of four construction parameters such as slurry conveying capacity, drilling and hoisting speed, agitation shaft rotation speed and remixing times on pile quality are analyzed. At last key reasons to ensure the construction quality of cement deep mixing pile are pointed out. Pile quality and construction efficiency should be considered when construction parameters being optimized. The research results provide reference for construction of cement deep mixing piles in the future.


2020 ◽  
Vol 2 (3) ◽  
pp. 84
Author(s):  
Wending Zhang

<p>Mechanical and electrical installation is a very important construction technology in construction engineering. From the perspective of the construction unit, whether the installation technology and procedure are scientific and reasonable will have a direct impact on the final quality of the project, and it is also closely related to the personal and property safety of the residents. Based on this, construction organizers should construct and perfect a standardized installation construction quality management system, clarify management regulations, and control key technical points, so as to comprehensively improve the quality of electromechanical installation projects and improve the project qualification rate. This article will describe the construction technology and quality control strategy of electromechanical installation engineering, aiming to lay a theoretical foundation for the improvement of engineering qualification rate and construction quality.</p>


Author(s):  
Luan Vítor Nascimento ◽  
Geovane de Almeida Nogueira ◽  
Tatianne Raianne Costa Alves ◽  
Maria Bruna Medeiros Araújo ◽  
Jeferson Luiz Dallabona Dombroski ◽  
...  

Sanitary and quality of seeds of three native species (Aroeira, Jucá, and Mofumbo) from the Caatinga biome, Brazil, and different control methods of microorganisms in seeds were evaluated. We used 500 seeds of each species, 100 for each treatment: control, superficial disinfestation, Enzimatic II, Captana and Mancozebe. Seeds were distributed in Petri dishes containing potato-dextrose-agar culture medium and stored in incubator type Biochemical Oxygen Demand at 28 ± 2 °C for five days. For germination tests, 100 seeds were arranged in germitest paper previously sterilized and moistened with sterilized distilled water, and incubated for 19 (mofumbo), 20 (jucá), and 25 (aroeira) days in incubators at 28 ± 2 °C. Aspergillus flavus, A. niger, A. ochraceus, Lasiodiplodia sp., Penicillium sp. and Rhizopus sp. are associated with the studied seeds. Captana reduced the incidence of Aspergillus and Penicillium in the seeds, being the most efficient in controlling the microfauna associated with these seeds. Enzimatic II also proved to be an efficient control for Aspergillus spp. There was no interference of the tested products on seed germination.


2020 ◽  
pp. 1-8
Author(s):  
Nina Szczepanik-Ścisło

This paper summarises the indoor air quality of a sports hall built in the passive standard. The sanitary conditions within the object were measured and analysed to identify whether the standards were met and if the test object was safe for occupants. This paper summarises the indoor air quality of a sports hall built in the passive standard. The sanitary conditions within the object were measured and analysed to identify whether the standards were met and if the test object was safe for occupants. This paper summarises the indoor air quality of a sports hall built in the passive standard. The sanitary conditions within the object were measured and analysed to identify whether the standards were met and if the test object was safe for occupants. This paper summarises the indoor air quality of a sports hall built in the passive standard. The sanitary conditions within the object were measured and analysed to identify whether the standards were met and if the test object was safe for occupants. This paper summarises the indoor air quality of a sports hall built in the passive standard. The sanitary conditions within the object were measured and analysed to identify whether the standards were met and if the test object was safe for occupants. This paper summarises the indoor air quality of a sports hall built in the passive standard. The sanitary conditions within the object were measured and analysed to identify whether the standards were met and if the test object was safe for occupants. This paper summarises the indoor air quality of a sports hall built in the passive standard. The sanitary conditions within the object were measured and analysed to identify whether the standards were met and if the test object was safe for occupants.


2020 ◽  
Author(s):  
Anna Bacevich ◽  
Anatoliy S. Dzjuba ◽  
Irina E. Kaukhova ◽  
Alexandra Tretiakov

Transfer of technologies is a logical, controllable and documented procedure of transfer of technology and control methods of medicine from the developer to the producer or from one producer to another [1]. A lot of departments of the enterprise involved in this process, their organization and coordination of work determines the character, timeliness and completeness of the transfer that has a direct influence on the quality of products. The task of the company in transfer of technologies is to preserve the quality of products and compliance with GxP rules, while material resources, time and space of the enterprise are economizing. Transfer of technologies divides into a preparatory stage and two main stages. The universal algorithm of the project of transfer of technology for the introducing a new drug at the operating enterprise is developed, the system of the organization of control and risk assessment of project activity is defined.


2013 ◽  
Vol 357-360 ◽  
pp. 1543-1547
Author(s):  
Chuan Li Wang ◽  
Shu Qing Sun ◽  
Jian Zhong Xia ◽  
Bo Qian ◽  
Yong Sheng Li ◽  
...  

High pressure jet grouting piles have a wide range of application in the engineering field. However, nowadays the increasing construction depth leads to an increasing difficulty of construction,which involves that the quality of construction is much more difficult to control. In this paper, some examples are given of the Luoyuan ultra-deep high pressure jet grouting piles. These examples are described with the used construction quality control methods and preventive recommendations for work construction quality detection methods. That is why this paper has an important guiding significance for similar projects.


Author(s):  
Russell L. Steere ◽  
Eric F. Erbe ◽  
J. Michael Moseley

We have designed and built an electronic device which compares the resistance of a defined area of vacuum evaporated material with a variable resistor. When the two resistances are matched, the device automatically disconnects the primary side of the substrate transformer and stops further evaporation.This approach to controlled evaporation in conjunction with the modified guns and evaporation source permits reliably reproducible multiple Pt shadow films from a single Pt wrapped carbon point source. The reproducibility from consecutive C point sources is also reliable. Furthermore, the device we have developed permits us to select a predetermined resistance so that low contrast high-resolution shadows, heavy high contrast shadows, or any grade in between can be selected at will. The reproducibility and quality of results are demonstrated in Figures 1-4 which represent evaporations at various settings of the variable resistor.


Author(s):  
Margaret Jane Radin

Boilerplate—the fine-print terms and conditions that we become subject to when we click “I agree” online, rent an apartment, or enter an employment contract, for example—pervades all aspects of our modern lives. On a daily basis, most of us accept boilerplate provisions without realizing that should a dispute arise about a purchased good or service, the nonnegotiable boilerplate terms can deprive us of our right to jury trial and relieve providers of responsibility for harm. Boilerplate is the first comprehensive treatment of the problems posed by the increasing use of these terms, demonstrating how their use has degraded traditional notions of consent, agreement, and contract, and sacrificed core rights whose loss threatens the democratic order. This book examines attempts to justify the use of boilerplate provisions by claiming either that recipients freely consent to them or that economic efficiency demands them, and it finds these justifications wanting. It argues that our courts, legislatures, and regulatory agencies have fallen short in their evaluation and oversight of the use of boilerplate clauses. To improve legal evaluation of boilerplate, the book offers a new analytical framework, one that takes into account the nature of the rights affected, the quality of the recipient's consent, and the extent of the use of these terms. It goes on to offer possibilities for new methods of boilerplate evaluation and control, and concludes by discussing positive steps that NGOs, legislators, regulators, courts, and scholars could take to bring about better practices.


Author(s):  
V. V. Agafonov ◽  
V. Yu. Zalyadinov ◽  
M. E. Yusupov ◽  
N. S. Bikteeva

Sustainability of mining companies is of of high concern. The problem is specifically acute at companies that are monotownor monosettlement-forming. Sustainability of a mine depends in many ways on product quality and production resource-intensity. This article discusses formation of mineral quality indexes in terms of an open pit chrysotile mine. The studies took into account specific features of operation procedures implemented by each structural division of the mine. The analysis has found managerial and technological inconsistencies which affect quality and marketable product output, as well as efficiency of the mine in whole. The background for efficiency enhancement at a company is, by the authors’ opinion, consolidation of personnel subject to the single development strategy, namely: improvement of production and control efficiency, as well as use of available reserves and resources by means of better setup for production. The proposed approaches to planning mining operations and forming mineral quality allow higher quality of processing stock. In addition, a new model proposed for interaction between structural divisions of a mining company ensures improvement of general production indexes.


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