scholarly journals Study of lifting platforms using three-dimensional computer-aided modeling

2021 ◽  
pp. 143
Author(s):  
Igor Kyrychenko ◽  
Alexsandr Chernikov ◽  
Andrey Rogovyi ◽  
Vіtaliy Ragulin ◽  
Alexsandr Reznikov ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Physical Object ◽  
Hydraulic Lift ◽  
Modern World ◽  
Structural Elements ◽  
Physical Strength ◽  
Single Mechanism ◽  
Small Height ◽  
Software Product ◽  
Modeling Stress

In the modern world, an aerial platform (auto-hydraulic lift) is an integral part of a rich model range of special crane equipment. The first primitive lift consisted of a lever, hinged on the base. A traction rope was placed on one side of the lever, and a counterweight on the other. With the help of his own physical strength, a person was able to rise to a small height using such a simple lifting mechanism. Currently, many types of lifts are used, which differ in height characteristics and the design of the lifting mechanism. Goal. The aim of this work is to study the kinematics of the moving elements of a hydraulic lift using a virtual model created on the basis of the Autodesk Inventor Professional software package. The model is based on an existing physical object. To study the kinematics of individual units and the installation as a whole, we use the method of modeling individual units and units of a machine, collecting them into a single mechanism with the task of all possible movements of structural elements in the Inventor package. Methodology. The assigned tasks can be solved by special design tools that are included in the software product, namely the environment for dynamic modeling, stress analysis. These tools are accessed while working in the "Assembly" environment, using the ribbon tabs "Design" and "Environments". The results of further research will bepresented in future publications.

Designing TIMP (tissue inhibitor of metalloproteinases) variants that are selective metalloproteinase inhibitors

2003 ◽  
Vol 70 ◽  
pp. 201-212 ◽  
Author(s):  
Hideaki Nagase ◽  
Keith Brew
Keyword(s):  
Three Dimensional ◽  
Therapeutic Interventions ◽  
Tissue Inhibitors Of Metalloproteinases ◽  
Structural Basis ◽  
Structural Elements ◽  
Ridge Structure ◽  
Extracellular Matrix Components ◽  
Metalloproteinase Inhibitors ◽  
The Matrix ◽  
A Disintegrin And Metalloproteinase

The tissue inhibitors of metalloproteinases (TIMPs) are endogenous inhibitors of the matrix metalloproteinases (MMPs), enzymes that play central roles in the degradation of extracellular matrix components. The balance between MMPs and TIMPs is important in the maintenance of tissues, and its disruption affects tissue homoeostasis. Four related TIMPs (TIMP-1 to TIMP-4) can each form a complex with MMPs in a 1:1 stoichiometry with high affinity, but their inhibitory activities towards different MMPs are not particularly selective. The three-dimensional structures of TIMP-MMP complexes reveal that TIMPs have an extended ridge structure that slots into the active site of MMPs. Mutation of three separate residues in the ridge, at positions 2, 4 and 68 in the amino acid sequence of the N-terminal inhibitory domain of TIMP-1 (N-TIMP-1), separately and in combination has produced N-TIMP-1 variants with higher binding affinity and specificity for individual MMPs. TIMP-3 is unique in that it inhibits not only MMPs, but also several ADAM (a disintegrin and metalloproteinase) and ADAMTS (ADAM with thrombospondin motifs) metalloproteinases. Inhibition of the latter groups of metalloproteinases, as exemplified with ADAMTS-4 (aggrecanase 1), requires additional structural elements in TIMP-3 that have not yet been identified. Knowledge of the structural basis of the inhibitory action of TIMPs will facilitate the design of selective TIMP variants for investigating the biological roles of specific MMPs and for developing therapeutic interventions for MMP-associated diseases.

scholarly journals A guideline for 3D printing terminology in biomedical research utilizing ISO/ASTM standards

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Amy E. Alexander ◽  
Nicole Wake ◽  
Leonid Chepelev ◽  
Philipp Brantner ◽  
Justin Ryan ◽  
...  
Keyword(s):  
3D Printing ◽  
Medical Literature ◽  
Three Dimensional ◽  
Physical Object ◽  
Medical Community ◽  
Layer By Layer ◽  
Digital File ◽  
Standardized Terminology ◽  
Standard Terms ◽  
The Impact

AbstractFirst patented in 1986, three-dimensional (3D) printing, also known as additive manufacturing or rapid prototyping, now encompasses a variety of distinct technology types where material is deposited, joined, or solidified layer by layer to create a physical object from a digital file. As 3D printing technologies continue to evolve, and as more manuscripts describing these technologies are published in the medical literature, it is imperative that standardized terminology for 3D printing is utilized. The purpose of this manuscript is to provide recommendations for standardized lexicons for 3D printing technologies described in the medical literature. For all 3D printing methods, standard general ISO/ASTM terms for 3D printing should be utilized. Additional, non-standard terms should be included to facilitate communication and reproducibility when the ISO/ASTM terms are insufficient in describing expository details. By aligning to these guidelines, the use of uniform terms for 3D printing and the associated technologies will lead to improved clarity and reproducibility of published work which will ultimately increase the impact of publications, facilitate quality improvement, and promote the dissemination and adoption of 3D printing in the medical community.

A test of airborne, side-looking synthetic-aperture radar in central Newfoundland for geological reconnaissance

1991 ◽  
Vol 28 (2) ◽  
pp. 257-265 ◽  
Author(s):  
D. F. Graham ◽  
D. R. Grant
Keyword(s):  
Surface Roughness ◽  
Synthetic Aperture Radar ◽  
Three Dimensional ◽  
Synthetic Aperture ◽  
Structural Elements ◽  
Terrain Classification ◽  
Regional Trends ◽  
Valuable Complement ◽  
Wide Swath ◽  
Aperture Radar

Side-looking, C-band synthetic-aperture radar (SAR) penetrates cloud and fog, and operates day or night, to produce pseudo-three-dimensional terrain images with enhanced topography and surface roughness. The images, which have a 20 m resolution and cover large areas, have been used to map the regional trends, patterns of lineaments, and terrain types over a 6200 km2 area of complex lithology, structure, and drift cover. Four lineament classes are differentiated. Glacial trends are clear, and bedrock structures (faults, fractures, joints, foliation, and folded bedding) with relief expression at the surface show through the drift as lineaments. They accurately reproduce most known features when compared with bedrock and Quatenary geology maps. Hitherto unrecognized structural elements are revealed. Tones and textures reflect minute surface roughness variations useful in terrain classification. SAR wide-swath-mode imagery is thus a valuable complement to aerial photography, and is superior in revealing hummocky moraine, ribbed moraine, boulder fields and stony till. Wider use of this imagery is encouraged.

‘The Japanese Stand Today as Teachers of the Whole World’: American Food Reform and the Russo-Japanese War

2021 ◽  
Vol 28 (3) ◽  
pp. 193-217
Author(s):  
Christine M. E. Guth
Keyword(s):  
United States ◽  
Eating Habits ◽  
The United States ◽  
Modern World ◽  
Physical Strength ◽  
Care Giving ◽  
Preventative Health ◽  
Japanese Military ◽  
The Russian Empire ◽  
Preventative Health Care

Abstract Japanese food first became the focus of serious attention in the United States during the Russo-Japanese War (1904–1905), when Japan’s victory over the Russian empire signaled that nation’s arrival as a new world power. This newfound interest had nothing to do with gastronomy. The conviction driving it was that diet and preventative health care in the Japanese military, which had been critical to its unexpected success, could serve as models for the United States. Military doctors, home economists, dietitians, businesses, vegetarians, and physical fitness fans joined this discourse, each with their own agendas. Many participants were women whose advocacy linked the supposed innate feminine propensity for nurturing and care giving with a shared faith in science to solve the problems facing the modern world. All believed Japan’s rice, vegetable, and fish-based diet contributed to the exceptional physical strength and stamina of the Japanese people because, unlike their own, “it was plain, rational, and easily digested, metabolized and assimilated.” More enthusiasm than knowledge in their claims, but this mattered little since the goal was not to popularize Japanese culinary culture, but to reform U.S. eating habits. This article examines the American discourse on Japanese food and health and how it shaped and reflected domestic political, social, and economic priorities in the 20th Century’s first decade.

Use of ICT in Teaching Vocational Subjects

2021 ◽  
Vol 9 (2) ◽  
pp. 803-813
Author(s):  
Deepak Chakravarty, Dr. Mahima Gupta, Prof. Banhi Jha
Keyword(s):  
Information And Communication Technologies ◽  
Information And Communication Technology ◽  
Communication Technology ◽  
Teaching And Learning ◽  
Communication Technologies ◽  
Modern World ◽  
Physical Strength ◽  
New Information ◽  
Information And Communication ◽  
The Way

In today’s modern world, globalization has completely changed the way of working. The way we live, learn, work, and even define work has changed due to new information and communication technologies—Hence, it can stated that human capital fuel up the modern economy. In reality, the information and communication technology revolution has turned intelligence into a valuable commodity. In today's economy, economic growth is based on mental intelligence rather than physical strength, and its worth is generated by recruiting knowledgeable workers and continuing to learn. Incorporating information and communication technology (ICT) into vocational and technical education and the educational system in general has a vast range of consequences on teaching and learning.

scholarly journals NECESSITY OF A SOFTWARE PRODUCT DEVELOPMENT FOR PREPARATION OF PROJECTS FOR FOREST ROAD CONSTRUCTION ORGANIZATION IN THE CONTEXT OF BIM-TECHNOLOGIES

2021 ◽  
Author(s):  
Andrey Manukovskiy ◽  
I. Efremov
Keyword(s):  
Road Construction ◽  
General Purpose ◽  
Structural Elements ◽  
Forest Road ◽  
Automated Generation ◽  
Software Products ◽  
Functional Capabilities ◽  
Software Product ◽  
The Russian Federation ◽  
Construction Organization

This article discusses the features of the development and applicationBIM technologies in the preparation of BIM projects for timber roads in the Russian Federation. The main types of software products used in the preparation of BIM-projects of forest roads have been established. The procedure for using software products is given, their main types are established and functional capabilities are analyzed. The drawbacks and limitations of software products for general-purpose project management in the context of the use of BIM technologies are identified. The necessity of developing a specialized software product for the preparation of elements of projects for the organization of construction «Planworks», in order to increase the efficiency of the use of BIM-technologies in the preparation of projects of timber haul roads. The article describes the proposed procedure for using the developed software product, and also formulates the main stages of developing a project for organizing construction in it. The main list of the initial data required for the preparation of the organization’s project in the developed software product is disclosed. The features of the automated generation of a network model of tasks for the construction of structural elements of a timber road are described, the main types of generated tasks, as well as the features of automated task linking, are given. The advantages of using the developed software product at the stages of development of a technical design and construction of a timber road have been determined.

scholarly journals Condensation method in practical modal analysis of hull vibration with application of 3D FE model

2019 ◽  
pp. 162-169
Author(s):  
Valeriy Sutyrin
Keyword(s):  
Modal Analysis ◽  
Three Dimensional ◽  
Element Model ◽  
Fe Model ◽  
Structural Elements ◽  
Natural Vibrations ◽  
Condensation Method ◽  
Dimensional Finite Element ◽  
Three Dimensional Finite Element ◽  
Analytical Approaches

This paper gives modal analysis results for mid-body of a refrigerator carrier ship by means of combined three-dimensional finite-element model with 1.5 million DOF. The study estimates the error of modal analysis for the ship structure if its boundary conditions are specified in advance, i.e. approximately, as well as analyses the gain in time offered by structuring the analytical model as per reduction (condensation) method. Analytical approaches thus transformed can be successfully applied in filtering lower frequencies and modes of natural vibrations for structural elements and joints of hull in the direct vicinity of exciting force application points.

scholarly journals POSSIBLE DEFECTS IN WOOD, WOOD PARAMETERS VARIABILITY AND SOME OF ITS INFLUENCE ON QUALITY OF BUILDING STRUCTURE

2015 ◽  
Vol 7 (2) ◽  
pp. 67-80
Author(s):  
Jaroslaw Malesza
Keyword(s):  
Three Dimensional ◽  
Residential Building ◽  
Theoretical Description ◽  
Construction Technology ◽  
Structural Elements ◽  
Require Time ◽  
Factory Production ◽  
3D Elements ◽  
Load Increase

Paper specifies the wood-framed with sheathing construction including phases of realization and exploitation. Methods of investigation based on practice and theory has been employed where practical identification of processes and their phases were presented with theoretical description of structure deformation within the exploitation period. Obtained results of investigations are presented in the form of technologic and mechanic of structure diagrams for buildings with adequate algorithms of analysis. Paper presents practical systematic of construction stages, technological problems and hazards in respect of loading and construction technology with method of computation of vertical deformations of building. Paper presents evaluation of contribution of wood defects in response to loading in the wood-framed residential building in exploitation process. Location of knots, allocation of pith in the elements cross section, defects of slope of grain and influence of moisture decreasing is examined in the paper. The wood-framed with sheathing in the form of large panel or modular three dimensional 3D elements are the most often used technology. This kind of buildings are actually constructed up to four story as a multifamily or varying universal buildings like school, kid-garden or offices. Low dead load from 0.30 to 1.00 kN/m2 and its favorable proportion to the live load increase energy saving factor in realization and within the exploitation time. Low own weight of structure enables complete prefabrication of wall, floor and roof panels, improving quality of construction and shortening time of construction. Process of prefabrication, wide assortment and variety of factory production does not require time consuming processes and complicated moulds or shuttering indispensable in precast RC structural elements.

The Role of Digital Fabrication in Today's Society

2020 ◽  
pp. 377-391
Author(s):  
Tandra Lea Tyler-Wood
Keyword(s):  
Three Dimensional ◽  
Digital Fabrication ◽  
Physical Object ◽  
Digital Design ◽  
Maker Movement ◽  
21St Century Classroom ◽  
K 12 ◽  
Computational Technology ◽  
The Maker Movement

Digital fabrication and the “maker movement” can play a major role in bringing computational technology into the 21st century classroom. Digital fabrication is defined as the process of translating a digital design developed on a computer into a physical object or any process for producing/printing a three-dimensional (3D) object. The maker movement is a platform for today's futuristic artisans, craftsmen, designers and developers to create, craft, and develop leading ideas and products. Digital fabrication and “making” could provide a new platform for bringing powerful ideas and meaningful tools to students. Digital fabrication has the potential to be “the ultimate construction kit.” Digital fabrication has strong ties to the maker movement. Maker spaces provide students with safe areas that allow students to safely use digital fabrication to make, build, and share their creations. This chapter will look at the role that digital fabrication can play in incorporating computational technology into the K-12 classroom.

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