Re-engineering: problems with theory and practical application

With the development of tissue engineering and materials science, through the research of meniscus tissue engineering to discover novel tissue engineering materials, and further accelerate the research of meniscus tissue engineering, through clinical trials and application of finding appropriate meniscus substitute, which can provide a new mode of treatment for meniscus repair. The focus of the current study including the mechanism of meniscus injury can absorb the natural collagen meniscus tissue engineering scaffolds as feasibility analysis, stress stimulation, meniscus recovery mechanical factors in 4 aspects. Research shows that it has a good application prospect and wider space for meniscus tissue engineering repair of exercise-induced meniscus injury. But in practical application, the meniscus tissue engineering scaffold construction, research on extra cellular matrix composite and its tissue compatibility, repair after tissue engineering meniscus stress stimulation and can withstand the mechanical factors the problem is still the meniscus tissue engineering problems.

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The Application of High Strength/Performance Concrete in Chinese Construction

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.357-360.1008 ◽

2013 ◽

Vol 357-360 ◽

pp. 1008-1011

Author(s):

Fei Hai Wu ◽

Yun Long Lv ◽

Quan Yang Shou

Keyword(s):

Structural Design ◽

High Strength Concrete ◽

Design Theory ◽

High Strength ◽

Structural Systems ◽

Practical Application ◽

Strength Performance ◽

Strength Concrete ◽

Engineering Problems

In this paper, the usage of high strength concrete are analyzed, based on this analysis, high strength concrete’s engineering problems existing in Chinese practical application are discussed. Reasonable structural design theory according to high strength concrete are put forward , this method is more suitable, especially, for statically indeterminate structural systems. In the end,our suggestions are given in an effort to improve the application of high strength/performance concrete in the construction of China.

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Practical Application of Mathematics to Engineering Problems

Mathematics Teacher ◽

10.5951/mt.25.5.0290 ◽

1932 ◽

Vol 25 (5) ◽

pp. 290-297

Author(s):

Harry Cole

Keyword(s):

Middle Ages ◽

Mathematical Analysis ◽

Practical Application ◽

Engineering Structures ◽

The Uncanny ◽

Look Back ◽

Engineering Problems ◽

Ancient Times ◽

The Middle Ages

As we look back in ancient times, we sometimes wonder how it was possible for the Romans to build that great aqueduct of Rome, their many beautiful and massive edifices, and the bridges in Italy and Gaul without the aid of mathematical analysis or formulas! The same, being true with all ancient culture, the Arabs, the Greeks, the Hindus, and the Chinese, with all their beautiful and massive structures, some of which are standing today, give us the feeling that their architects and engineers had the uncanny feeling of mathematical insight. Through the middle ages many buildings and engineering structures were erected partly with the aid of mathematics and partly with the knowledge and experience of great architects and builders, who certainly had a wonderful sense of proportion and a definite insight of the forces of nature without the reasons therefore. And yet the buildings and structures stand today as mute testimony of the wonderful capacity and ability of the engineers and builders of past ages.

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Application of a 3-D CFD model to investigate flood-related engineering problems

E3S Web of Conferences ◽

10.1051/e3sconf/20184006004 ◽

2018 ◽

Vol 40 ◽

pp. 06004

Author(s):

Daniel Horna Munoz ◽

George Constantinescu

Keyword(s):

Dam Break ◽

Low Flow ◽

Practical Application ◽

Flow Conditions ◽

Validation Data ◽

Channel Bend ◽

Engineering Problems ◽

Dam Break Flow ◽

Flooded Area ◽

Critical Regions

The paper discusses the application of a fully 3-D, non-hydrostatic, RANS model with deformable free-surface capabilities to several main types of flood-related engineering problems. The model is found to accurately simulate the dam break flow developing in a 900 open channel bend for which detailed validation data from a laboratory experiment are available. First practical application deals with mitigation of flooding extent via implementation of flood protection structures such as floodwalls. Numerical results show that the floodwalls effectively protect the critical regions situated in the vicinity of the river and the reduction of the flooded area with respect to the case when floodwalls are not present is about the same at high-flow conditions and at low-flow conditions. The second application deals with prediction of flow structure around a location containing a bridge whose deck becomes submerged as the flood wave passes the bridge location. The final application considers the effects of a sudden dam break failure for a dam situated upstream of the Iowa City, USA.

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Brake Parameter Optimization Design Based on MOEA/D

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.945-949.484 ◽

2014 ◽

Vol 945-949 ◽

pp. 484-489

Author(s):

Yong Jian Zhang ◽

Yi Zhang ◽

Xing Yu Wan ◽

Xiao Dong Zheng

Keyword(s):

Parameter Optimization ◽

Temperature Rise ◽

Optimization Design ◽

Pareto Front ◽

Multi Objective Optimization ◽

Practical Application ◽

Drum Brake ◽

Engineering Problems ◽

Simulation Results ◽

Parameter Optimization Design

The design level of the brake is important in ensuring the vehicles’ fast and safe running. Since the present brake parameter optimization design model can not meet the requirements of the practical application very well, this paper proposes a drum brake multi-objective optimization model aiming at minimizing the volume of the drum brake and minimizing the brake’s temperature rise. The algorithm of MOEA/D is adopted in the simulation. The simulation results indicate that the Pareto front we get is suitable for real and engineering problems, which is helpful for designers to choose appropriate parameters to optimize the brake and provides designers with great consultative value.

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Integrated Automation Monitoring System in the Application of 220kV Substation

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.84-85.725 ◽

2011 ◽

Vol 84-85 ◽

pp. 725-728

Author(s):

Yan Yan ◽

Xing Hua Ma ◽

Fei Fei Ji

Keyword(s):

Control System ◽

Monitoring System ◽

System Construction ◽

Practical Application ◽

Integrated Automation ◽

Engineering Problems ◽

Automation Control

This paper introduce a substation integrated automation control system of 220kV structures, characteristics and functions of the system, which discuss and analysis the engineering problems in practical application and points out the system still must perfect place, and put forward to some suggestions of the system construction.

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Progress In The Practical Application Of Automated Image Analysis To Tem Negatives

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100078614 ◽

1977 ◽

Vol 35 ◽

pp. 214-217

Author(s):

F. A. Heckman ◽

E. Redman ◽

J.E. Connolly

Keyword(s):

Image Analysis ◽

Image Quality ◽

Exposure Time ◽

Image Contrast ◽

Automated Image Analysis ◽

Practical Application ◽

Factors Affecting ◽

High Image Quality ◽

Qualitative Evidence ◽

Comprehensive Study

In our initial publication on this subject1) we reported results demonstrating that contrast is the most important factor in producing the high image quality required for reliable image analysis. We also listed the factors which enhance contrast in order of the experimentally determined magnitude of their effect. The two most powerful factors affecting image contrast attainable with sheet film are beam intensity and KV. At that time we had only qualitative evidence for the ranking of enhancing factors. Later we carried out the densitometric measurements which led to the results outlined below.Meaningful evaluations of the cause-effect relationships among the considerable number of variables in preparing EM negatives depend on doing things in a systematic way, varying only one parameter at a time. Unless otherwise noted, we adhered to the following procedure evolved during our comprehensive study:Philips EM-300; 30μ objective aperature; magnification 7000- 12000X, exposure time 1 second, anti-contamination device operating.

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Fifth Edition: the New Standard

Guides Newsletter ◽

10.1001/amaguidesnewsletters.2000.novdec01 ◽

2000 ◽

Vol 5 (6) ◽

pp. 1-7

Author(s):

Christopher R. Brigham ◽

James B. Talmage ◽

Leon H. Ensalada

Keyword(s):

Musculoskeletal System ◽

Medical Information ◽

Objective Assessment ◽

Scientific Data ◽

Practical Application ◽

Fourth Edition ◽

Appropriate Use ◽

Medical Evaluation ◽

Single Set

Abstract The AMA Guides to the Evaluation of Permanent Impairment (AMA Guides), Fifth Edition, is available and includes numerous changes that will affect both evaluators who and systems that use the AMA Guides. The Fifth Edition is nearly twice the size of its predecessor (613 pages vs 339 pages) and contains three additional chapters (the musculoskeletal system now is split into three chapters and the cardiovascular system into two). Table 1 shows how chapters in the Fifth Edition were reorganized from the Fourth Edition. In addition, each of the chapters is presented in a consistent format, as shown in Table 2. This article and subsequent issues of The Guides Newsletter will examine these changes, and the present discussion focuses on major revisions, particularly those in the first two chapters. (See Table 3 for a summary of the revisions to the musculoskeletal and pain chapters.) Chapter 1, Philosophy, Purpose, and Appropriate Use of the AMA Guides, emphasizes objective assessment necessitating a medical evaluation. Most impairment percentages in the Fifth Edition are unchanged from the Fourth because the majority of ratings currently are accepted, there is limited scientific data to support changes, and ratings should not be changed arbitrarily. Chapter 2, Practical Application of the AMA Guides, describes how to use the AMA Guides for consistent and reliable acquisition, analysis, communication, and utilization of medical information through a single set of standards.

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