Study of "Saralsk" Deposit for Practical Applications in Construction

In article the results of research of structural features and technical properties of andesite - basalt stone rock of the “Saralsk” deposit are given. The material is estimated by its mineral - petrographic composition, and the cuts/refinements of stone materials have been made for the microscopic study of mineral-petrographic composition. Researches are conducted according to requirements of acting standards and as a result, it became clear, that the rock consists basically of minerals opacitized hornblende and plagioclase, it doesn't contain any no secondary minerals such as hydroxides of iron, chlorites, epidote, quartz, saricite, etc. Petrographic researches have allowed to determine the species of stone rock. The density, strength, water resistance and frost resistance of stone rock are studied. The suitability of the material for practical application in construction, including for external works, is revealed.

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Ring-Forming Polymerization toward Perfluorocyclobutyl and Ortho-Diynylarene-Derived Materials: From Synthesis to Practical Applications

Materials ◽

10.3390/ma14061486 ◽

2021 ◽

Vol 14 (6) ◽

pp. 1486

Author(s):

Eugene B. Caldona ◽

Ernesto I. Borrego ◽

Ketki E. Shelar ◽

Karl M. Mukeba ◽

Dennis W. Smith

Keyword(s):

Chemical Resistance ◽

Structural Features ◽

Review Article ◽

Aryl Ether ◽

Aromatic Rings ◽

Practical Applications ◽

Repeat Units ◽

Wide Range ◽

Synthetic Routes ◽

The Cost

Many desirable characteristics of polymers arise from the method of polymerization and structural features of their repeat units, which typically are responsible for the polymer’s performance at the cost of processability. While linear alternatives are popular, polymers composed of cyclic repeat units across their backbones have generally been shown to exhibit higher optical transparency, lower water absorption, and higher glass transition temperatures. These specifically include polymers built with either substituted alicyclic structures or aromatic rings, or both. In this review article, we highlight two useful ring-forming polymer groups, perfluorocyclobutyl (PFCB) aryl ether polymers and ortho-diynylarene- (ODA) based thermosets, both demonstrating outstanding thermal stability, chemical resistance, mechanical integrity, and improved processability. Different synthetic routes (with emphasis on ring-forming polymerization) and properties for these polymers are discussed, followed by their relevant applications in a wide range of aspects.

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Encapsulate α-MnO2 nanofiber within graphene layer to tune surface electronic structure for efficient ozone decomposition

Nature Communications ◽

10.1038/s41467-021-24424-x ◽

2021 ◽

Vol 12 (1) ◽

Author(s):

Guoxiang Zhu ◽

Wei Zhu ◽

Yang Lou ◽

Jun Ma ◽

Wenqing Yao ◽

...

Keyword(s):

Graphene Layer ◽

Water Resistance ◽

Catalyst Design ◽

Ozone Decomposition ◽

Oxygen Species ◽

Ozone Molecule ◽

Practical Application ◽

Surface Electronic Structure ◽

Reaction Barriers ◽

Excellent Stability

AbstractMajor challenges encountered when developing manganese-based materials for ozone decomposition are related to the low stability and water inactivation. To solve these problems, a hierarchical structure consisted of graphene encapsulating α-MnO2 nanofiber was developed. The optimized catalyst exhibited a stable ozone conversion efficiency of 80% and excellent stability over 100 h under a relative humidity (RH) of 20%. Even though the RH increased to 50%, the ozone conversion also reached 70%, well beyond the performance of α-MnO2 nanofiber. Here, surface graphite carbon was activated by capturing the electron from inner unsaturated Mn atoms. The excellent stability originated from the moderate local work function, which compromised the reaction barriers in the adsorption of ozone molecule and the desorption of the intermediate oxygen species. The hydrophobic graphene shells hindered the chemisorption of water vapour, consequently enhanced its water resistance. This work offered insights for catalyst design and would promote the practical application of manganese-based catalysts in ozone decomposition.

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The Research and Simulation Analysis of a New Type of Translational Transmission Device

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.556-562.1408 ◽

2014 ◽

Vol 556-562 ◽

pp. 1408-1412

Author(s):

Zhi Qiang Zhang

Keyword(s):

Modeling And Simulation ◽

Theoretical Foundation ◽

Simulation Analysis ◽

Structural Modeling ◽

Structural Features ◽

Practical Application ◽

Optimization Analysis ◽

New Type ◽

Mechanism Parameter ◽

Relationship Of

In this paper, the following work is done: a new type of translational transmission device is designed; explained in detail are the operating principle, structural features, relationship of mechanism parameter and non interference conditions of the movement; the optimization analysis of transmission device is implemented on the basis of non interference conditions of the bucket movement; structural modeling and simulation analysis are carried out by utilization of Pro/e & Recurdyn; and based on virtual prototype technology, the new type of translational transmission device is verified by experiments, the data of which prove the translational transmission device reasonable and practicable. In conclusion, this paper has laid the theoretical foundation of the practical application of the translational transmission device.

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Combining Cultural Anthropology and Gerontology

GeroPsych ◽

10.1024/1662-9647/a000279 ◽

2021 ◽

Author(s):

Anamaria Depner

Keyword(s):

Cultural Anthropology ◽

Practical Application ◽

Methodological Issues ◽

Practical Applications ◽

Alternative Approaches ◽

And Migration

Abstract. One of the central objectives of gerontology is to provide categories and criteria for practical application. In contrast, cultural anthropology describes and interprets processes observed in various practical contexts but does not aim to create practical applications. For concepts such as “culture,” this discrepancy in goals might be the source of misunderstandings and even conflicting definitions. Bringing together the perspectives of both disciplines on culture, this paper illustrates the pitfalls of an understanding of culture grounded in geographical origins. It focuses on the situation in Germany and thereby addresses a universal problem using certain conceptions of culture in the context of aging and migration. In conclusion, it presents alternative approaches, while also addressing methodological issues.

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Allyl glycidyl ether-modified animal glue binder for improved water resistance and bonding strength in sand casting

Organic Polymer Material Research ◽

10.30564/opmr.v2i2.2384 ◽

2021 ◽

Vol 2 (2) ◽

Author(s):

Chen-chen Fan ◽

Qian Tang

Keyword(s):

Tensile Strength ◽

Bonding Strength ◽

Room Temperature ◽

Water Resistance ◽

Glycidyl Ether ◽

Animal Glue ◽

Practical Application ◽

Foundry Industry ◽

Dog Bone ◽

Allyl Glycidyl Ether

This paper aims to develop a modified animal glue sand binder for foundry casting with improved water resistance and bonding strength. An efficient method is reported by using sodium hydroxide as the catalyst to improve the operability of animal glue binder and allyl glycidyl ether as the modifier to improve the water resistance and bonding strength. Sand specimens prepared using allyl glycidyl ether-modified animal glue binder were cured by compressed air at room temperature. The proposed method saves energy and is environmentally friendly and inexpensive. Compared with unmodified animal glue binder, standard dog bone sand specimens with allyl glycidyl ether-modified animal glue binder had higher tensile strength of 2.58 MPa, flowability of 1.95 g, better water resistance (a lower decrease in tensile strength at 25 °C and relative humidity of 60%), and good collapsibility. This allyl glycidyl ether-modified animal glue binder is suitable for practical application in the foundry industry.

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The potential for ambulation by severely handicapped cerebral palsy patients

Prosthetics and Orthotics International ◽

10.3109/03093649609164429 ◽

1996 ◽

Vol 20 (2) ◽

pp. 122-128 ◽

Cited By ~ 11

Author(s):

J. Stallard ◽

R. E. Major ◽

S. E. Farmer

Keyword(s):

Cerebral Palsy ◽

Upper Limb ◽

Lower Limb ◽

Knee Flexion ◽

Prototype System ◽

Practical Application ◽

Practical Applications ◽

Therapeutic Benefits ◽

Wide Range ◽

Severely Handicapped

Whereas walking for paraplegic patients is now a routine clinical option, ambulation for heavily handicapped cerebral palsy patients is less well established. There are good reasons for supposing that therapeutic benefits similar to that achieved with paraplegic patients are possible for this group. However, the biomechanical problems which must be overcome are different and in many ways more difficult to address. The most important factors are identified as appropriate truncal support, control of abduction/adduction, rotation and flexion range at the hip, and of knee flexion. A means of applying these controls is described as being a combination of a walking frame and orthosis. The special walking frame provides adjustable support at thoracic, abdominal and sacral levels and incorporates castor steering and upper limb support. Controls on lower limb movements are applied through a special orthosis which has a readily available variation of specification to accommodate the wide range of conditions met in cerebral palsy. Practical application of a prototype system has shown that it can enable patients to walk unaided. However, in most cases it was used indoors only. Evaluation of the experience in applying the system has enabled the fundamental principles to permit more practical applications to be defined.

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Formal Analysis and Verification of Airborne Software Based on DO-333

Electronics ◽

10.3390/electronics9020327 ◽

2020 ◽

Vol 9 (2) ◽

pp. 327

Author(s):

Zongyu Cao ◽

Wanyou Lv ◽

Yanhong Huang ◽

Jianqi Shi ◽

Qin Li

Keyword(s):

Formal Methods ◽

Formal Analysis ◽

Practical Application ◽

Practical Applications ◽

Technological Advances ◽

Catastrophic Loss ◽

Development Processes ◽

General Guide ◽

Verification Process ◽

Software Lifecycle

With rapid technological advances in airborne control systems, it has become imperative to ensure the reliability, robustness, and adaptability of airborne software since failure of these software could result in catastrophic loss of property and life. DO-333 is a supplement to the DO-178C standard, which is dedicated to guiding the application of formal methods in the review and analysis of airborne software development processes. However, DO-333 lacks theoretical guidance on how to choose appropriate formal methods and tools to achieve verification objectives at each stage of the verification process, thereby limiting their practical application. This paper is intended to illustrate the formal methods and tools available in the verification process to lay down a general guide for the formal development and verification of airborne software. We utilized the Air Data Computer (ADC) software as the research object and applied different formal methods to verify software lifecycle artifacts. This example explains how to apply formal methods in practical applications and proves the effectiveness of formal methods in the verification of airborne software.

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Implementation of FCAUP – a framework for conformity assessment inspired by the uncertainty principle

The TQM Journal ◽

10.1108/tqm-03-2020-0053 ◽

2020 ◽

Vol ahead-of-print (ahead-of-print) ◽

Author(s):

Celso Francisco de Moraes ◽

Messias Borges Silva ◽

Rapinder Sawhney

Keyword(s):

Uncertainty Principle ◽

Quality Management System ◽

Internal Audit ◽

Field Studies ◽

Manufacturing Industries ◽

Conformity Assessment ◽

Practical Application ◽

Content Type ◽

Practical Applications ◽

Pilot Implementation

PurposeThe purpose of this paper is to report the first practical applications of FCAUP (Framework for Conformity Assessment inspired by the Uncertainty Principle) carried out using a pilot implementation in a boat trailer manufacturer company in Maryville, Tennessee, USA and a practical application in a metrology company in São José dos Campos, São Paulo, Brazil.Design/methodology/approachField studies have been conducted in two different companies: a pilot implementation during the preparation activities of the acceptance inspection of finished products and a practical application during the internal audit related to the quality management system.Findings(1) partial double inspection is advantageous in conformity assessment; (2) a structured procedure tends to reduce the risks arising from the use of partial double inspection; (3) the recommended amount of double inspections is directly proportional to the uncertainty involved in the process and it is inversely proportional to the degree of trust in a presumed conformity status.Research limitations/implicationsThis novel framework is for practitioners in manufacturing industries and test laboratories.Practical implicationsThe results of these practical applications suggest that FCAUP is a consistent approach to be used in several categories of conformity assessment in manufacturing industries and test laboratories due to the balance between result and time (cost).Originality/valueThis new framework, named FCAUP, for planning and executing conformity assessment activities has been introduced in a theoretical study published by Moraes and Silva (2018) and it is based on an analogy with the Uncertainty Principle of Quantum Mechanics.

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The thermal conductivity of polymethylsilsesquioxane aerogels and xerogels with varied pore sizes for practical application as thermal superinsulators

Journal of Materials Chemistry A ◽

10.1039/c3ta15094a ◽

2014 ◽

Vol 2 (18) ◽

pp. 6525-6531 ◽

Cited By ~ 98

Author(s):

G. Hayase ◽

K. Kugimiya ◽

M. Ogawa ◽

Y. Kodera ◽

K. Kanamori ◽

...

Keyword(s):

Thermal Conductivity ◽

Pore Size ◽

Gas Pressure ◽

Practical Application ◽

Practical Applications ◽

Pore Sizes ◽

The Relationship

The relationship between the thermal conductivity, gas pressure and pore size of polymethylsilsesquioxane aerogels and xerogels has been investigated for practical applications.

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