Winter Construction Technology of Steel Structure in Northeast China

2014 ◽  
Vol 638-640 ◽  
pp. 1596-1599
Author(s):  
Jin Ping Hu ◽  
Cheng Chun Cui ◽  
Jia Zhen Huo
Keyword(s):  
Northeast China ◽  
Great Influence ◽  
Steel Structure ◽  
Negative Temperature ◽  
Construction Technology ◽  
Paint Coating ◽  
Structure Engineering ◽  
Technical Measures

The construction environment under negative temperature has a great influence on the quality of steel structure in winter, especially the negative temperature welding construction of steel structure. Based on the building steel structure engineering, this paper discussed the construction technology and technical measures of steel structure under negative temperature in northeast China in winter, such as the installing construction, the welding construction, the paint coating construction and so on.

Study on Mass Concrete Construction Technology of Raft Foundation in Yantai Ocean Development Center

2014 ◽  
Vol 919-921 ◽  
pp. 1421-1425 ◽  
Author(s):  
Jian Zhu ◽  
Yan Bin Zhang ◽  
Xu Feng Du ◽  
Yong Jiang
Keyword(s):  
Temperature Rise ◽  
Mass Concrete ◽  
Construction Technology ◽  
High Rise ◽  
High Rise Building ◽  
Initial Stage ◽  
Building Project ◽  
Development Center ◽  
Technical Measures

Mass concrete is widely being used in the construction field, especially for the foundation of super high-rise building. In the initial stage of pouring completion of mass concrete, lots of heat generated from the cement hydration will lead to a high temperature inside of concrete. When the temperature difference between the inner and outer of concrete exceeds the limited value, thermal stress will be greater than the tensile strength of concrete, which may cause hazardous penetrating cracks of the structure. To ensure the safety and durability of concrete structure, necessary measures should be taken to control the temperature rise and construction quality of concrete. Taking a super high-rise building project as an example, this paper introduces several effective solutions to resolve above problems. The technical measures such as enhancing the concrete quality, controlling temperature rise, strengthening temperature monitoring would be detailed illustrated. Meanwhile, valuable suggestions achieved from this practical project are proposed in order to guide the structural design and on-site construction of similar projects.

Defect Identification and Quality Control of Steel Structure Installation Projects Based on Fishbone Diagram

2013 ◽  
Vol 340 ◽  
pp. 104-108
Author(s):  
Guang Feng Wang
Keyword(s):  
Quality Control ◽  
Steel Structure ◽  
Engineering Technology ◽  
Defect Identification ◽  
Quality Problem ◽  
Fishbone Diagram ◽  
Structure Engineering

With the increasing popularization of the application of steel structure in the construction field of China, quality problem has become a major challenge of steel structure. Therefore, how to better control the quality of steel structure has been a very important issue in China now. In this paper, combined with the characteristics of steel structure engineering technology, how to better control the quality of steel structure installation projects is discussed and analyzed in depth.

Construction Technology of Steel Structure Roof in Terminal Building of a Civil Airport

2011 ◽  
Vol 368-373 ◽  
pp. 169-172
Author(s):  
Yan Feng ◽  
Hui Min Li ◽  
Cheng He ◽  
Chun Feng
Keyword(s):  
Complex Structure ◽  
Steel Structure ◽  
Construction Technology ◽  
Construction Technique ◽  
Structure Selection ◽  
Technical Measurements

Steel structure project of an airport building is full of characters as complex forming, super long structure, complex structure selection, and bearings or joint. In this paper, the author describes the construction technique of roof steel structure in the project of a terminal building from the perspectives of construction division, construction sequences, and erection and technical measurements. It can assure the safety and quality of construction.

INFLUENCE OF BIOSTIMULANTS ON THE IMMUNE PROTECTION OF CHICKENS

2019 ◽  
Keyword(s):  
Growth And Development ◽  
Digestive System ◽  
Great Influence ◽  
Egg Laying ◽  
Growth Spurt ◽  
Immune Protection ◽  
Internal Organs ◽  
State Growth ◽  
Active Peak

Among the animals of different species chickens react in greater numbers and more noticeable to a va-riety of growth biostimulators. There are great improvements on their general state, growth spurts and development of internal organs is quicker when they are injected with small portions. Such stimulation has a great influence not only on growth and development of chickens in their first period of life but also on health and productivity later on. The most active peak of reaction is when chicken is two months old. Their internal organs, especially the digestive system, develop earlier, their genitals appear earlier and they begin egg-laying much earlier too, when chickens are being fed those biostimulants. Slaughter meat yield becomes more and quality of meat improves with the influence of stimulators. A major disease pre-vention and healing effect can be reached, since most of the biostimulants raise immune system and re-sistance of the organism. It can be the only thing to justify their usage on animals. Tests show that the most typical growth spurt of birds is from fifteen to twenty percent in normal conditions. Growth spurts are also accompanied with the rise of resistance to different infections and activation of different physio-logical processes. Growth spurts can be twice or more than written here, but those spurts are usually short-timed and often accompanied with the dysfunction of different organs

Analysis of Electromagnetic Inverse Model of Resistance Spot Welding

2010 ◽  
Vol 160-162 ◽  
pp. 974-979
Author(s):  
Nai Feng Fan ◽  
Zhen Luo ◽  
Yang Li ◽  
Wen Bo Xuan
Keyword(s):  
Resistance Spot Welding ◽  
Regularization Method ◽  
Spot Welding ◽  
Influence Factors ◽  
Great Influence ◽  
Welding Process ◽  
Inverse Model ◽  
Resistance Spot ◽  
Inversion Theory

Resistance spot welding (RSW) is an important welding process in modern industrial production, and the quality of welding nugget determines the strength of products to a large extent. Limited by the level of RSW quality monitor, however, RSW has rarely been applied to the fields with high welding quality requirements. Associated with the inversion theory, in this paper, an electromagnetic inverse model of RSW was established, and the analysis of influence factors, such as the layout of the probes, the discrete program and the regularization method, was implemented as well. The result shows that the layout of the probe and the regularization method has great influence on the model. When the probe is located at the y direction of x-axis or the x direction of y-axis and Conjugate Gradient method is selected, a much better outcome can be achieved.

scholarly journals A MODEL BASED ON FUZZY LINGUISTIC INFORMATION TO EVALUATE THE QUALITY OF DIGITAL LIBRARIES

2010 ◽  
Vol 09 (03) ◽  
pp. 455-472 ◽  
Author(s):  
F. J. CABRERIZO ◽  
J. LÓPEZ-GIJÓN ◽  
A. A. RUÍZ ◽  
E. HERRERA-VIEDMA
Keyword(s):  
Digital Libraries ◽  
User Satisfaction ◽  
Information Access ◽  
Great Influence ◽  
Linguistic Information ◽  
Model Based ◽  
Global Quality ◽  
Fuzzy Linguistic ◽  
The Web

The Web is changing the information access processes and it is one of the most important information media. Thus, the developments on the Web are having a great influence over the developments on others information access instruments as digital libraries. As the development of digital libraries is to satisfy user need, user satisfaction is essential for the success of a digital library. The aim of this paper is to present a model based on fuzzy linguistic information to evaluate the quality of digital libraries. The quality evaluation of digital libraries is defined using users' perceptions on the quality of digital services provided through their Websites. We assume a fuzzy linguistic modeling to represent the users' perception and apply automatic tools of fuzzy computing with words based on the LOWA and LWA operators to compute global quality evaluations of digital libraries. Additionally, we show an example of application of this model where three Spanish academic digital libraries are evaluated by fifty users.

Seismic risk for commercial buildings in Memphis

1983 ◽  
Vol 73 (5) ◽  
pp. 1435-1450
Author(s):  
Andrzej S. Nowak ◽  
Elizabeth L. M. Rose
Keyword(s):  
Reinforced Concrete ◽  
Seismic Risk ◽  
Steel Structure ◽  
Structural Type ◽  
Commercial Buildings ◽  
Concrete Frames ◽  
Reinforced Concrete Frame ◽  
Damage Prediction ◽  
Concrete Frame

Abstract This paper deals with the evaluation of seismic risk for commercial buildings in Memphis, Tennessee. The seismicity of the area is summarized, and commercial buildings are divided into categories with regard to parameters such as number of stories, year of construction, assessed value, total floor area, and structural type. The distributions of these parameters are presented in the figures. During the study, over 15 buildings were examined on site by a team of experts to evaluate their seismic resistances. The quality of the design, materials, and construction was found to be surprisingly good, particularly in those structures built since 1900. Seismic resistance is analytically evaluated for five buildings: a four-story reinforced concrete frame; a four-story steel structure with vertical trusses; a 13-story stell frame; and two multi-story reinforced concrete frames. The loadings from four sources are considered: EI Centro and Taft earthquakes in California (1940 and 1952, respectively) and the forces specified in the 1979 UBC and 1981 BOCA codes. Ratios of load to capacity are calculated. For each building considered, the expected percentage of damage is evaluated for the two earthquakes. The damage prediction is extended to all commercial buildings in Memphis.

scholarly journals Study on Key Points of Steel Structure Construction Technology on High-Rise Building

2015 ◽  
Vol 4 (4) ◽  
pp. 49
Author(s):  
Chao Chen
Keyword(s):  
Steel Structure ◽  
Normal Operation ◽  
Construction Technology ◽  
Quality And Safety ◽  
Construction Quality ◽  
Reference Function ◽  
High Rise ◽  
High Rise Building ◽  
Key Points ◽  
The Common

<p>Study of steel structure construction technology on high-rise building was needed to strengthen, in order to improve the construction quality and safety of our building, ensure the normal operation of production and living of people. Therefore, the article will analyze the common technology in steel structure construction of high-rise building, and expect able to play a certain reference function.</p>

scholarly journals Evaluation of women’s quality of life after breast reconstruction surgery

2020 ◽  
Vol 66 (2) ◽  
Author(s):  
Marta Stanisz ◽  
Ewelina Kolak ◽  
Dorota Branecka-Woźniak ◽  
Renata Robaszkiewicz-Boukaz ◽  
Przemysław Ciepiela ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Quality Of Life ◽  
Breast Reconstruction ◽  
Great Influence ◽  
Well Being ◽  
World Health ◽  
World Health Organization Quality ◽  
Reconstruction Surgery ◽  
The Impact

Introduction: Breast cancer is the most common malignancy among women, and is usually treated surgically. Mastectomy has a great influence on the mental and physical condition of women. Breast reconstruction offers them a chance to improve their quality of life (QOL) and self-image.The main aim of the study was to gain knowledge about the impact of breast reconstruction on the QOL of women following mastectomy, and an analysis of the QOL after breast reconstruction, in the context of prosthesis effect assessment.Materials and methods: The study comprised 100 women following breast reconstructive surgery involved in 1 of the 7 “Amazon Clubs” (post-mastectomy women’s associations) in the West Pomeranian Voivodeship, northwest Poland. The study was based on the author’s questionnaire, and a shortened standardized version of the World Health Organization Quality of Life-BREF (WHOQOL-BREF) questionnaire. Statistical calculations were performed with StatSoft Statistica v10 software, adopting a significance level of p < 0.05.Results: The women who decided to have breast reconstruction surgery, noticed improved well-being (67%) and experiencedan increase in self-confidence (61%). The vast majority ofthe patients surveyed (93%) were satisfied with the effectof the prosthesis. Statistically significant differences in QOL were observed in the following spheres: rest and sleep, work capacity, negative feelings, and financial resources (p < 0.05) in relation to the evaluation of the prosthesis effect.Conclusions: 1. Breast reconstruction has a positive influence on improvements in well-being, increasing self-esteem, and the assessment of a more attractive appearance in women of all ages. 2. Breast reconstruction surgery has a positive impact on QOL and health in the physical, psychological, and environmental domains, especially in the women who are satisfied with the effects of the surgery. 3. A negative assessment of the breast reconstruction effect has an adverse influence on QOL. Identifying the factors affecting dissatisfaction with the post-operative outcome is crucial for a complete understanding of the subject, and for implementing measures aimed at improving the QOL of these women.Keywords: quality of life; mastectomy; breast cancer; breast reconstruction; breast surgery.

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