Principles of obtaining light permeable conglomerate materials based on wood filler

Abstract Recently, the world has seen a demand for transparent or translucent concrete, capable of performing both, structural functions and decorative - design tasks. Such concrete use opens up new opportunities for the creative searches of designers, allows inclusion of new materials in those elements of decorating the internal and external of buildings, structures, large and small architectural forms. The research results on obtaining a new translucent material in the form of wood concrete (arbolite), which makes it possible to introduce previously unused wood processing waste of low-value wood species - birch and aspen into the technological process are presented in the article. The primary results open up new possibilities for light-conducting concretes at significantly low economic costs of their production. The results allows us to conclude about the complexity and ambiguity of wood bleaching processes and the need to strictly follow optimal formulations, modes and compositions at all stages of production.

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Bioproducts from Potatoes. A Review

Environmental and Climate Technologies ◽

10.1515/rtuect-2017-0013 ◽

2017 ◽

Vol 21 (1) ◽

pp. 18-27 ◽

Cited By ~ 8

Author(s):

Vivita Priedniece ◽

Kriss Spalvins ◽

Kaspars Ivanovs ◽

Jelena Pubule ◽

Dagnija Blumberga

Keyword(s):

Food Waste ◽

Food Production ◽

New Products ◽

Value Added ◽

Raw Material ◽

New Materials ◽

Processing Waste ◽

Local Resources ◽

The World ◽

Value Added Products

Abstract The increasing amount of food waste througout the world is becoming a major problem for waste management plants. The food waste produced amounts to 1.3 million tons a year. This is a resource that could be used for production of new products. Decreasing fossil resources and a rapidly growing population lead to the necessity to produce more food and to replace existing with new materials ones that are biological and produce little effect on environment. Bioeconomy is a method that can help achieve production of value-added products that use local resources and waste to manufacture products efficiently. In this article, we are looking at possibilities to use potatoes for production of new materials, such as bioplastics, antioxidants, proteins, instead of their conventional use for food production. We have studied potato components, extraction technologies and summed up possible directions for development for new products, looking at the use of processing waste as a raw material.

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Withdrawal Properties of Self-Tapping Screws in Japanese larch (Larix kaempferi (Lamb.) Carr.) Cross Laminated Timber

Forests ◽

10.3390/f12050524 ◽

2021 ◽

Vol 12 (5) ◽

pp. 524

Author(s):

Junhua Xu ◽

Shuangbao Zhang ◽

Guofang Wu ◽

Yingchun Gong ◽

Haiqing Ren

Keyword(s):

Regression Model ◽

Engineering Design ◽

Wood Species ◽

Japanese Larch ◽

Effective Length ◽

Larix Kaempferi ◽

Cross Laminated Timber ◽

The World ◽

Different Types ◽

Length Increment

With the increasing popularity of cross-laminated timber (CLT) constructions around the world, there have been attempts to produce CLT using local wood species in different countries, such as Japanese larch (Larix kaempferi (Lamb.) Carr.) in China. Thus, the need to investigate the connection performance also increases to support the design and construction of CLT buildings using local wood species. In this study, the withdrawal properties of three different types of self-tapping screws (STS), with a diameter of 6 mm, 8 mm, and 11 mm, were tested with Japanese larch CLT. The results revealed that the withdrawal strength of STS increased with increasing density and effective length, but decreased with an increasing diameter. With a density increment of 0.05 g/cm3, the withdrawal strength increased by an average of 9.4%. With an effective length increment of 24 mm, the withdrawal strength increased by an average of 1.4%. An empirical regression model was adopted to predict the withdrawal strength of Japanese larch CLT based on the results, which can be used for potential engineering design of CLT connections using STS.

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Nanocomposites: Retrospecr and Prospect

MRS Proceedings ◽

10.1557/proc-286-241 ◽

1992 ◽

Vol 286 ◽

Cited By ~ 8

Author(s):

Rustum Roy

Keyword(s):

Major Part ◽

Size Range ◽

Nanocomposite Materials ◽

One Dimension ◽

New Materials ◽

Infinite Class ◽

Materials Synthesis ◽

The World ◽

Two Phases ◽

Nanometer Size Range

ABSTRACTIn this paper we make clear distinctions from the terms nanophase, nanocrystalline and deal only with nanocomposites defined as an interacting mixture of two phases, one of which is in the nanometer size range in at least one dimension. The author's origins of development of the idea that nanocomposites are a virtually infinite class of new materials are described.Then we refer to the results of our extensive studies of nanocomposites derived by solution-solgel techniques to illustrate the properties of such materials in the area of chemical and thermal reactivity.Finally it is pointed out that in the last few years nanocomposite materials have become a major part of new materials synthesis all over the world for applications ranging from mechanical to optical, to magnetic to dielectric.

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THE IMPROVEMENT OF HAZARDOUS GOODS TRANSPORTATION TECHNOLOGY

Transport ◽

10.3846/16484142.2004.9637954 ◽

2004 ◽

Vol 19 (2) ◽

pp. 56-62 ◽

Cited By ~ 1

Author(s):

Nijole Batarliene

Keyword(s):

Technological Process ◽

Developed Countries ◽

State Institutions ◽

Dangerous Goods ◽

Foreign Countries ◽

The World ◽

Transportation Process ◽

Modelling Methodology ◽

The Creation ◽

Informational System

This article analyses the conception of the improvement of hazardous goods transportation technology as well as its theoretical principles. Basic organizational aspects of hazardous goods safe transportation are also represented. Effective and safe hazardous goods transportation is possible only using good informational supply. Process modelling and the creation of hazardous goods transportation informational system can improve each hazardous goods transportation technological process. This system should join its components on the whole and coordinate state institutions. The article studies the experience of foreign countries in the creation of informational systems. In the world developed countries various methods of safe dangerous goods transportation are used. This article analyses the types of informational technologies application problems, shows their schemes. It is noted that the solution of transport technology problems is based on the improvement of technological supply, the rational usage of informational modelling methodology of the whole transportation process.

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Influence of saw chain type and wood species on the kickback angle of a chainsaw

Technical Sciences ◽

10.31648/ts.4176 ◽

2018 ◽

Vol 4 (21) ◽

pp. 323-334 ◽

Cited By ~ 1

Author(s):

Zdzisław Kaliniewicz ◽

Łukasz Maleszewski ◽

Zbigniew Krzysiak

Keyword(s):

Wood Species ◽

Rotational Speed ◽

Test Stand ◽

Lower Price ◽

Level Gauge ◽

Wood Processing ◽

Chain Type

Wood processing operations, in particular debarking, can pose a significant hazard for the chainsaw operator when performed without due caution. The most common hazards with potentially fatal consequences include kickback which occurs when the chainsaw’s guide bar is violently thrown backwards towards the operator. The aim of this study was to determine the influence of wood species and different saw chain brands on the kickback angle of a chainsaw. The kickback angle of a combustion chainsaw was analyzed in a self-designed test stand with the use of a digital level gauge accurate to 0.1°. Four differently priced saw chain brands, including two standard chains and two chains with anti-kickback features, were evaluated. Kickback was analyzed on five wood species (pine, spruce, birch, alder and oak) at three engine speeds (50%, 75% and 100% of maximum rotational speed). Kickback was significantly determined by wood species and saw chain type, and it was less influenced by the rotational speed of the chainsaw engine. The average kickback angle was largest in alder and smallest in spruce. The analyzed parameter was not always reduced by saw chains with anti-kickback features. In some cases, low-priced saw chains with anti-kickback features offer less protection than more expensive standard chains. Chainsaw buyers should decide whether it is worthwhile to compromise on safety in exchange for a lower price.

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A Cultural History of Objects in the Modern Age

10.5040/9781474206907 ◽

2021 ◽

Keyword(s):

Cultural History ◽

21St Century ◽

Global Changes ◽

New Materials ◽

The West ◽

Post Colonial ◽

Everyday Objects ◽

Modern Age ◽

The World ◽

History Of

A Cultural History of Objects in the Modern Age covers the period 1900 to today, a time marked by massive global changes in production, transportation, and information-sharing in a post-colonial world. New materials and inventions – from plastics to the digital to biotechnology – have created unprecedented scales of disruption, shifting and blurring the categories and meanings of the object. If the 20th Century demonstrated that humans can be treated like things whilst things can become ever more human, where will the 21st Century take us? The 6 volume set of the Cultural History of Objects examines how objects have been created, used, interpreted and set loose in the world over the last 2500 years. Over this time, the West has developed particular attitudes to the material world, at the centre of which is the idea of the object. The themes covered in each volume are objecthood; technology; economic objects; everyday objects; art; architecture; bodily objects; object worlds.

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Talentos e Aptidões: Um olhar sobre o Autismo

10.31012/978-65-5861-554-5 ◽

2021 ◽

Author(s):

Jaime Lin

Keyword(s):

Autism Spectrum Disorder ◽

Neurodevelopmental Disorders ◽

Autism Spectrum ◽

Educational Environment ◽

Clinical Heterogeneity ◽

Economic Costs ◽

The World ◽

Medical Term ◽

Patterns Of Behavior ◽

The Media

Autism is a medical term that encompasses a broad spectrum of neurodevelopmental disorders characterized by impaired reciprocal socialization and communication, often accompanied by restricted or repetitive patterns of behavior and interests. Due to the enlargement in the clinical diagnostic boundaries and the increased awareness of autism spectrum disorder (ASD), the world has seen a dramatic increase in its prevalence during the last two decades. ASD is currently considered one of the most common neurodevelopmental disorders worldwide. Frequently reported in terms of comorbidities, disabilities, burden and economic costs, the talents, gifts and abilities of people within the autistic spectrum only reaches the media when it amazes the audience. In this review, we want show that the high clinical heterogeneity found in autism can also be applied to the gifts and abilities, and that it must be nurtured with appropriate developmental, educational environment and above all, support and hope.

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Wastewater treatment from heavy metals using extracts of wood processing waste (oak bark)

IOP Conference Series Materials Science and Engineering ◽

10.1088/1757-899x/451/1/012221 ◽

2018 ◽

Vol 451 ◽

pp. 012221 ◽

Cited By ~ 2

Author(s):

T A Vasilenko ◽

N Yu Kiryushina ◽

A Yu Semeykin

Keyword(s):

Heavy Metals ◽

Wastewater Treatment ◽

Processing Waste ◽

Wood Processing

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Application and Development of Materials for ‘Green’ Concrete

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.848.135 ◽

2013 ◽

Vol 848 ◽

pp. 135-138

Author(s):

Jia Zi Shi ◽

Xing Dang

Keyword(s):

Environmental Impact ◽

Construction Material ◽

Recycled Aggregates ◽

Mineral Admixtures ◽

Environmental Damage ◽

New Materials ◽

Green Concrete ◽

The Past ◽

Concrete Production ◽

The World

Concrete is the most commonly used construction material in the world over the past decades. But the increase in concrete production leads to an increase in greenhouse gases emission and environmental damage. With the current focus on sustainability, it is necessary to evaluate concretes environmental impact and develop new materials for green concrete. Green recycled aggregates and mineral admixtures are important component materials for green concrete. In this paper, the development of green concrete industry is introduced, and the application of materials for green concrete such as green recycled aggregates and mineral admixtures are discussed.

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