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Marek Borowski

Bio: Marek Borowski is an academic researcher from AGH University of Science and Technology. The author has contributed to research in topics: Coal mining & Airflow. The author has an hindex of 7, co-authored 60 publications receiving 181 citations.


Papers
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Journal ArticleDOI
TL;DR: Wang et al. as mentioned in this paper proposed a new type of composite binder, which has advantages of dust suppression effect, relatively simple preparation process and the environmentally friendly agent, based on a single chemical dust suppressant.

38 citations

Journal Article
TL;DR: In this article, the authors discuss present climatic conditions in Polish coal mines and the sources of heat load and ways of heat transfer into excavations, and the methods of air conditioning in underground mines are characterized.
Abstract: Polish underground coal mining is facing more and more difficult climatic conditions at work places every year. In the nearest future these conditions may be expected to get even worse as mining is started at deeper levels and is even more concentrated. This article discusses present climatic conditions in Polish coal mines. The sources of heat load and ways of heat transfer into excavations are discussed. The methods for improving thermal conditions are characterized as well as their ineffectiveness in mines with a great temperature hazard. The methods of air conditioning in underground mines are characterized. The examples of refrigeration and air conditioning systems in Polish mines are presented. Advantages and disadvantages of these systems in Polish mining conditions are given. The directions in which air- conditioning may head towards are determined on the basis of air conditioning systems that are being implemented at the moment.

21 citations

Journal ArticleDOI
16 Apr 2020-Energies
TL;DR: An energy analysis of the Turowka hotel, which is being modernized as part of the project to adapt the building to the requirements of a sustainable building, and the proposed retrofit solution, which considers the high energy consumption, structure of the energy demand, and limits of retrofit intervention on facades.
Abstract: The energy consumption of buildings is very important for both economic and environmental reasons. Newly built buildings are characterized by higher insulation and airtightness of the building envelope, and are additionally equipped with technologies that minimize energy consumption in order to meet legal requirements. In existing buildings, the modernization process should be properly planned, taking into account available technologies and implementation possibilities. Hotel buildings are characterized by a large variability of energy demand, both on a daily and a yearly basis. Monitoring systems, therefore, provide the necessary information needed for proper energy management in the building. This article presents an energy analysis of the Turowka hotel located in Wieliczka (southern Poland). The historical hotel facility is being modernized as part of the project to adapt the building to the requirements of a sustainable building. The modernization proposal includes a trigeneration system with a multifunctional reverse regenerator and control module using neural algorithms. The main purpose is to improve the energy efficiency of the building and adapt it to the requirements of low-energy buildings. The implementation of a monitoring system enables energy consumption to be reduced and improves the energy performance of the building, especially through using energy management systems and control modules. The proposed retrofit solution considers the high energy consumption, structure of the energy demand, and limits of retrofit intervention on facades.

14 citations

Journal ArticleDOI
TL;DR: In this paper, the authors describe methods of methane drainage during mining used in Polish coal mines and compare these methods with regard to their effectiveness under mining conditions in Polish mines, showing that the highest effectiveness of the system with overlying drainage gallery and with the parallel tailgate roadways has been observed for the U ventilation system of longwall panel.
Abstract: Methane drainage is used in Polish coal mines in order to reduce mine methane emissions as well as to keep methane concentration in mine workings at safe levels. This article describes methods of methane drainage during mining used in Polish coal mines. The first method involves drilling boreholes from tailgate roadway to an unstressed zone in roof or floor layers of a mined seam. It is the main method used in Polish mining, where both the location of drilled boreholes as well as their parameters are dependent on mining and ventilation systems of longwalls. The second method is based on drilling overlying drainage galleries in seams situated under or over the mined seam. This article compares these methods with regard to their effectiveness under mining conditions in Polish mines. High effectiveness of methane drainage of longwalls with different ventilation and methane drainage systems has been proven. The highest effectiveness of methane drainage has been observed for the system with overlying drainage gallery and with the parallel tailgate roadways. In case of classic U ventilation system of longwall panel, boreholes drilled from the tailgate roadway behind the longwall front are lost.

14 citations


Cited by
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01 Jun 2005

3,154 citations

09 Mar 2012
TL;DR: Artificial neural networks (ANNs) constitute a class of flexible nonlinear models designed to mimic biological neural systems as mentioned in this paper, and they have been widely used in computer vision applications.
Abstract: Artificial neural networks (ANNs) constitute a class of flexible nonlinear models designed to mimic biological neural systems. In this entry, we introduce ANN using familiar econometric terminology and provide an overview of ANN modeling approach and its implementation methods. † Correspondence: Chung-Ming Kuan, Institute of Economics, Academia Sinica, 128 Academia Road, Sec. 2, Taipei 115, Taiwan; ckuan@econ.sinica.edu.tw. †† I would like to express my sincere gratitude to the editor, Professor Steven Durlauf, for his patience and constructive comments on early drafts of this entry. I also thank Shih-Hsun Hsu and Yu-Lieh Huang for very helpful suggestions. The remaining errors are all mine.

2,069 citations

Journal ArticleDOI

237 citations

Journal ArticleDOI
TL;DR: In this article , a highly sensitive methane (CH4) sensor based on light-induced thermoelastic spectroscopy (LITES) using a 2.33 µm diode laser with high power is demonstrated for the first time.
Abstract: In this manuscript, a highly sensitive methane (CH4) sensor based on light-induced thermoelastic spectroscopy (LITES) using a 2.33 µm diode laser with high power is demonstrated for the first time. A quartz tuning fork (QTF) with an intrinsic resonance frequency of 32.768 kHz was used to detect the light-induced thermoelastic signal. A Herriot multi-pass cell with an effective optical path of 10 m was adopted to increase the laser absorption. The laser wavelength modulation depth and concentration response of this CH4-LITES sensor were investigated. The sensor showed excellent long term stability when Allan deviation analysis was performed. An adaptive Savitzky-Golay (S-G) filtering algorithm with χ2 statistical criterion was firstly introduced to the LITES technique. The SNR of this CH4-LITES sensor was improved by a factor of 2.35 and the minimum detection limit (MDL) with an integration time of 0.1 s was optimized to 0.5 ppm. This reported CH4-LITES sensor with sub ppm-level detection ability is of great value in applications such as environmental monitoring and industrial safety.

62 citations