scholarly journals Determination of Coal Cutting Forces Using the Cutting Head of POU-BW/01-WAP Device

2021 ◽  
Vol 4 (1) ◽  
pp. 281-289
Author(s):  
Witold Biały ◽  
Jiri Fries ◽  
Greg Galecki
Keyword(s):  
Cutting Process ◽  
Strain Gauges ◽  
Cutting Head ◽  
Coal Cutting ◽  
World Fairs ◽  
Innovative Solutions ◽  
The World ◽  
Force Components ◽  
Independent Measuring

Abstract The paper presents a method for measuring and recording the forces involved in the coal cutting process. Moreover, a method for visualization of all forces involved in the cutting process was described. In the following part, the construction and principle of operation of a device for determination of forces involved in the cutting process (coal mining), referred to by the author as POU-BW/01-WAP, are presented. Resistance extensometry was used to measure the forces. This is the only device in the world that determines two of three force components that take part in the cutting process. For this purpose, two independent measuring blocks were used, which are strain gauges of force: cutting (Fs) and knife pressure (Fd). In order to register these forces, a real mining knife used in longwall shearer drums was applied – i.e. tangential-rotary. The equipment has the ATEX certificate allowing for operation in real conditions as a device intended for use in potentially explosive atmospheres – in accordance with the directive 94/9/EC. It has received many awards at world fairs for inventions and innovative solutions.

scholarly journals Measurement of Forces During the Extraction Process

2018 ◽  
Vol 1 (1) ◽  
pp. 117-128
Author(s):  
Witold Biały ◽  
Jerry Wedzicha ◽  
Victor Nordin
Keyword(s):  
Extraction Process ◽  
Cutting Process ◽  
Coal Extraction ◽  
Coal Seams ◽  
Conical Pick ◽  
Factors Affecting ◽  
The World ◽  
Innovative Solution ◽  
Trade Shows ◽  
Independent Measuring

Abstract The article briefly describes the factors affecting the workability of coal seams. Next, the construction and principle of operation of a globally unique device for determining the values of forces involved in the cutting process (coal extraction) named POU-BW/01-WAP by the author were presented. It is the only device in the world that determines two of the three component forces that are involved in the cutting process. To this end, two independent measuring blocks were used, which consist of tensometric force sensors: cutting (Fs) and pick downforce (Fd). To register these forces, a real pick was used, which is used in longwall drum shearers - a conical pick. The device has ATEX certification that allows working in real conditions, as a device intended for use in potentially explosive atmospheres - in accordance with Directive 94/9/EC. The instrument has received many awards at global inventiveness and innovative solution trade shows.

Determination of cutting force of roll-formed section in shaped dies-knife guillotine

2020 ◽  
pp. 373-376
Author(s):  
S.V. Povorov ◽  
D.V. Egorov ◽  
D.S. Volgin
Keyword(s):  
Cutting Force ◽  
Cutting Process ◽  
Sheet Blank

The change in cutting force in the cutting process of roll-formed section in shaped dies-knife guillotine is studied. It is established that to calculate the cutting force in shaped guillotine, one can use formulas to determine the cutting force of sheet blank on conventional straight knives guillotine.

Actual issues of valuation of businesses of the economic entity

2017 ◽  
Vol 31 (2) ◽  
pp. 156-162 ◽  
Author(s):  
O. V. Schneider
Keyword(s):  
Discount Rate ◽  
Accurate Prediction ◽  
Economic Activities ◽  
Business Valuation ◽  
Economic Entity ◽  
The World ◽  
Definition Of

The article summarizes the main approaches in the definition of business valuation the economic entity. In the process of business valuation, taking into account the risks of financial and economic activities necessary to obtain information on what stage the owner implements the business will receive income. The most difficult task is the impossibility of accurate prediction in determining the level of income and the determination of a discount rate capitalization of future incomes due to the instability of the economy, both in the country and around the world.

scholarly journals Anticipatory Non-Green-Phenomena Determination for Designing Eco-Design Products

2021 ◽  
Vol 13 (2) ◽  
pp. 621
Author(s):  
Hsin Rau ◽  
Mary Deanne M. Lagapa ◽  
Po-Hsun Chen
Keyword(s):  
Sustainable Development ◽  
Environmental Impact ◽  
Product Design ◽  
Determination Method ◽  
Washing Machine ◽  
Product Failure ◽  
Design Concepts ◽  
The World ◽  
World Business Council

The number of consumers with green awareness have grown these days and as a result they have turned to purchase eco-friendly products. For this reason, this study aims to propose a method for eco-design based on the anticipatory failure determination method to develop eco-design products. By using eco-design concepts adopted from the World Business Council for Sustainable Development, the process will limit the failures and issues related to environmental impact in product design. The proposed method for eco-design product in this study follows the following procedure. First, we analyze product failure. Second, we propose the determination of the non-green phenomenon of the failure. Thirdly, we integrate the intensified non-green phenomenon to generate non-green hypotheses and fourthly, we eliminate each non-green phenomenon hypothesis by introducing the contradiction matrix of TRIZ for obtaining solutions. Finally, we assess alternative eco-design solutions by evaluation. To verify the practicality of the new procedure, a washing machine is used as an example for illustration.

scholarly journals Electrochemical design of a new nanosensor based on cobalt nanoparticles, chitosan and MWCNT for the determination of daclatasvir: a hepatitis C antiviral drug

RSC Advances ◽  
2017 ◽  
Vol 7 (2) ◽  
pp. 1118-1126 ◽  
Author(s):  
Shereen M. Azab ◽  
Amany M. Fekry
Keyword(s):  
Hepatitis C ◽  
Health System ◽  
Antiviral Drug ◽  
Cobalt Nanoparticles ◽  
Essential Medicines ◽  
World Health ◽  
Spectroscopic Methods ◽  
Basic Health ◽  
The World

Daclatasvir (DAC) is listed on the World Health Organization's list of essential medicines needed in a basic health system, therefore, electrochemical and impedance spectroscopic methods are necessary.

(Uncontrolled) Donation after Cardiac Determination of Death: A Note of Caution

2008 ◽  
Vol 36 (4) ◽  
pp. 760-765 ◽  
Author(s):  
Christopher James Doig ◽  
David A. Zygun
Keyword(s):  
Organ Failure ◽  
Organ Transplant ◽  
Standard Of Care ◽  
Determination Of Death ◽  
The Past ◽  
The World ◽  
Tissue Recovery ◽  
End Stage

“I think there’s a big strong belief in [...] the community … and maybe it’s in the world at large that somehow the doctors are more concerned about harvesting the organs than what’s best for the patient.”1 In the past 45 years, organ and tissue recovery and transplantation have moved from the occasional and experimental to a standard of care for end-stage organ failure; receiving an organ transplant is for many the only opportunity for increased quantity and/or quality of life. The increasing prevalence of diseases such as viral hepatitis, diabetes, and hypertension has significantly increased the incidence of end-organ failure. Additionally, surgical advances have permitted less stringent qualification criteria, so that people of advanced age or patients who may be in a physiologically fragile state are now eligible to be organ recipients. These changes have created a significant demand for organs.

DESTRUCTIVE METHODS FOR DETERMINING RESIDUAL STRESSES (review)

2021 ◽  
pp. 95-104
Author(s):  
A.D. Monakhov ◽  
◽  
N.O. Yakovlev ◽  
V.V. Avtaev ◽  
E.A. Kotova ◽  
...  
Keyword(s):  
Digital Image Correlation ◽  
Residual Stresses ◽  
Speckle Interferometry ◽  
Image Correlation ◽  
Strain Gauges ◽  
Contact Method ◽  
Layer By Layer ◽  
Deep Hole ◽  
Destructive Methods

The paper presents an overview of methods for determining residual stresses. Methods such as splitting and segmentation, layer-by-layer removal, slitting (cutting, pliability), profiling, drilling holes (including a «deep» hole) are considered. The description of the methods for mea-suring the deformation used in the determination of residual stresses is given. The most common contact method using strain gauges, as well as non-contact methods: polarization-optical (photo-elasticity), optical speckle interferometry, digital image correlation.

PRODUCT DIFFERENTIATION IN SPA TOURISM AS A MAIN COMPETITIVE ADVANTAGE

2020 ◽  
Author(s):  
Violeta Bashova ◽  
Keyword(s):  
Competitive Advantage ◽  
Product Design ◽  
Product Differentiation ◽  
Market Segmentation ◽  
Social Distance ◽  
Price Competition ◽  
Innovative Product ◽  
Distinctive Features ◽  
Innovative Solutions ◽  
The World

Development in the spa industry is going through difficulties caused by the world situation of tourism recovery. In days of compliance with anti-epidemic measures and social distance, the restoration of the spa offer will be based on innovative solutions for diversity in the spa services and products. This is the challenge of more enterprising and resourceful professionals in business to avoid the struggle for survival. One of their main fulcrums is reorientation towards non-price competition, which is based on the distinctive features of the product. Either it consists of innovative product design or mere market segmentation, product differentiation typically involves externalities across competitors, which clearly play an important role in firm's competitive incentives to invest in differentiation. The purpose of this report is through research and analysis of supply and development in spas, to prove the hypothesis that the diversity of spa products and services is fundamental to recovering in a highly competitive and further financially aggravated, current environment in tourism.

Sign in / Sign up

Export Citation Format

Share Document