Combustion Heat Meter

2017 ◽  
Vol 14 (3) ◽  
pp. 100-107
Author(s):  
Zbigniew Magonski
Keyword(s):  
Science And Technology ◽  
Good Alternative ◽  
Heat Energy ◽  
Good Friend ◽  
Direct Evaluation ◽  
Combustion Heat ◽  
Time Period ◽  
Power Change ◽  
Electronic Engineer ◽  
In Memoriam

Abstract In Memoriam—In memory of Dr. Zbigniew Magonski, a talented electronic engineer and inventor, was born in Glubczyce, Poland in 1950 and passed away in Cracow, Poland in 2017. He received M.Sc. degree in Solid State Technology from the Technical University of Wrocław, Poland in 1973, and PhD degree from the AGH University of Science and Technology, Cracow, Poland in 2000. For 15 years, he was with the R&D Center for Hybrid Microelectronics, Cracow Poland. At that time, his interest was focused on hybrid A/D, D/A converters also on DC HV power converters. Later, for 28 years, he was with the Department of Electronics, AGH University of Science and Technology, Cracow, Poland. His research interests covered ceramic microfluidic systems, hydrocarbon combustors, and high-temperature solid oxide fuel cells. In 1994–1995, he was with Summit Technology, Massachusetts, involved in a project relating to HV supplying of excimer lasers. He was a member of IMAPS US Chapter, the author of 13 patents and almost 50 technical papers connected with electronic technology. He was a caring husband and father and a good friend of many of us. We will miss you, Zbyszek. This article presents a proposal of a thermal instrument intended for the evaluation of heat energy of fluid fuels. Two thermal devices the flow meter and the combustor are the basic components of the instrument. The meter maintains a constant temperature in the vicinity of the combustion zone. The amount of heat energy in the fuel is calculated as the ratio of the electric power change expressed in Watts to the change of fuel supply delivered to the combustor within a time period of 1 s. The method enables a direct evaluation of fuel energy expressed in Joules per unit of mass or volume. For some applications, the meter may be a good alternative for a bulky bomb calorimeter.

Meter for the measurement heat of combustion

2011 ◽  
Vol 2011 (1) ◽  
pp. 000938-000946
Author(s):  
Zbigniew Magonski
Keyword(s):  
Electric Power ◽  
Constant Temperature ◽  
Combustion Zone ◽  
Good Alternative ◽  
Heat Energy ◽  
Heat Of Combustion ◽  
Direct Evaluation ◽  
Bomb Calorimeter ◽  
Time Period ◽  
Power Change

This paper presents a proposal of a thermal instrument intended for the evaluation of heat energy of fluid fuels. Two thermal devices the flowmeter and the combustor are the basic components of the instrument. The meter maintains a constant temperature in the vicinity of the combustion zone. The amount of heat energy in the fuel is calculated as the ratio of the electric power change expressed in Watts to the change of fuel supply delivered to the combustor within a time period of 1sek. The method enables a direct evaluation of fuel energy expressed in Jules per unit of mass or volume. For some applications, the meter may be a good alternative for a bulky bomb calorimeter.

Multiscale Model of Influence of Heat Curing on Fly-Ash Concrete Mixtures

2014 ◽  
Vol 1054 ◽  
pp. 162-167
Author(s):  
Tomáš Váchal ◽  
Rostislav Šulc ◽  
Pavel Svoboda
Keyword(s):  
Fly Ash ◽  
Mechanical Characteristics ◽  
Multiscale Model ◽  
Heat Energy ◽  
Correct Treatment ◽  
Fly Ash Concrete ◽  
Concrete Mixtures ◽  
Heat Curing ◽  
Time Period ◽  
Quantity Of Heat

This paper describes influence of time and temperature of heat curing on progress of mechanical characteristics of concrete mixtures based on alkali activated fly-ash (POPbeton). One of the major impacts for the correct treatment of alkaline activation is the quantity of heat energy in a given time period which is supplied during activation. The paper describes the dependence of progress of compressive strength of POPbeton on the time and temperature of heat curing. It was assembled a predictive model which describes the dependence of the supplied heat energy over time on the resulting properties of POPbeton. The result is a tool that can predict the resulting values of mechanical characteristics of test samples of POPbeton.

scholarly journals Biochemical Evaluation and Green Synthesis of Nano Silver Using Peroxidase fromEuphorbia(Euphorbia amygdaloides) and Its Antibacterial Activity

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Semra Cicek ◽  
Azize Alaylı Gungor ◽  
Ahmet Adiguzel ◽  
Hayrunnisa Nadaroglu
Keyword(s):  
Silver Nanoparticles ◽  
Antibacterial Activity ◽  
Green Synthesis ◽  
Yersinia Pseudotuberculosis ◽  
Wide Spectrum ◽  
Good Alternative ◽  
Uv Spectrum ◽  
Simple Method ◽  
Time Period ◽  
Peroxidase Enzyme

Silver nanoparticles are used an increased attention for various biomedical and medical applications. In this study, green synthesis of silver nanoparticles was made with simple method by using peroxidase enzyme partially purified fromEuphorbia(Euphorbia amygdaloides) plant. Optimum pH, temperature and time period were determined to obtain silver nanoparticles using the peroxidase enzyme. The result shows that higher silver nanoparticle was synthesized for 4 hours and at 20°C and pH 8. Also, optimal concentration of metal ions was found as 0.5 mM. The synthesized silver nanoparticles were characterized by UV spectrum, scanning electron microscope (SEM) and X-ray diffraction. Antibacterial activity of silver nanoparticles was measured against some microorganisms such asSerratia marcescens, Yersinia pseudotuberculosis, Klebsiella pneumoniae, Staphylococcus aureus, Staphylococcus epidermidis, Streptococcus pyogenes, Pseudomonas aeruginosa, Salmonella typhimurium, Listeria monocytogenes, and Escherichia coli. Synthesized silver nanoparticles have wide spectrum antibacterial activity in low concentration and may be a good alternative therapeutic approach in medicine and pharmaceutical fields in future.

In Memoriam: Anthony R. H. Goodwin

2015 ◽  
Vol 37 (3) ◽  
Keyword(s):  
Good Friend ◽  
In Memoriam

Dr. Anthony R. H. Goodwin (Tony) left us on 13 December 2014. We have lost a good friend and a very valuable colleague. We present our heartfelt condolences to his family.

scholarly journals In Memoriam: David L. Waltz

2012 ◽  
Vol 18 (3) ◽  
pp. 291-291
Author(s):  
John Tait
Keyword(s):  
Natural Language ◽  
Brain Cancer ◽  
Board Member ◽  
Editorial Board Member ◽  
Good Friend ◽  
Language Engineering ◽  
In Memoriam

David L. Waltz died on March 22, 2012 after suffering from brain cancer.Dave was a good friend to Natural Language Engineering, and provided some sage advice when Roberto Garigliano and I started working on the proposed journal in the early 1990s; he subsequently agreed to serve as a founding editorial board member.

scholarly journals Detailed reconstruction of gully headcut retreat using exposed tree roots: a case study from the Vsetínské vrchy Mts. (Outer Western Carpathians)

Geografie ◽  
2018 ◽  
Vol 123 (2) ◽  
pp. 179-199
Author(s):  
Karel Šilhán
Keyword(s):  
Good Alternative ◽  
Tree Roots ◽  
Erosion Rates ◽  
Highly Active ◽  
Time Period ◽  
Outer Western Carpathians ◽  
Forested Areas ◽  
Root Exposure ◽  
Active Channels ◽  
Headcut Retreat

Gully erosion is a widespread natural hazard that causes substantial financial losses every year. Dendrogeomorphic (tree ring-based) methods are a good alternative approach for assessing gully development in forested areas. The majority of previous dendrogeomorphic studies dealing with erosion focused on sheet erosion or erosion rates in the active channels of old, stabilized gullies. This study aims to asses newly originated gully development based on an analysis of exposed tree roots. Moreover, the root exposure data were used to calculate rates of linear and areal gully headcut retreat (GHR). In total, 81 samples (microcuts) from common spruce (Picea abies (L.) Karst) were analyzed for anatomical responses to root exposure. The existence of the shallow channel preceding the gully itself was identified. This GHR reconstruction (for a limited time period of eight years) provides evidence of highly active gully development in the forested area of the Flysch Carpathians that is comparable with results from semi-arid regions.

scholarly journals In Memoriam: Stephen Prince

Projections ◽  
2021 ◽  
Vol 15 (1) ◽  
pp. 106-107
Author(s):  
Carl Plantinga ◽  
Malcolm Turvey
Keyword(s):  
Good Friend ◽  
In Memoriam

Friends and colleagues of Stephen Prince were shocked and saddened to learn of his death at the age of sixty-five on 30 December 2020 in Blacksburg, Virginia, after a brief illness. Steve was a good friend to many, a prolific scholar with a deep love of cinema, a beloved teacher, a trusted and valued colleague, and a generous mentor to younger scholars.

In Memoriam: Professor Zbigniew Witold ENGEL 1933 – 2013

2013 ◽  
Vol 38 (4) ◽  
pp. 453-456
Author(s):  
Jan Adamczyk ◽  
Wojciech Batko
Keyword(s):  
High School ◽  
Science Education ◽  
Science And Technology ◽  
Academic Life ◽  
World Science ◽  
Entire Life ◽  
History Of ◽  
In Memoriam ◽  
The University

Abstract When we look at the history of AGH – University of Science and Technology, recognized as one of the best universities in the country, we find that for that success many people worked for several dozen years. However, the subjects, the methodology and directions of their work were shaped by units – outstanding personalities of science. Just to mention, among others Professors Stanisław Zuber, Władysław Takliński, Witold Budryk, Maksymilian Tytus Huber and Władysław Bogusz. These people have shaped our institution, marked its new path of development and permanent place in the history of Polish and world science. To belong to such a group is a great ennoblement, for which one works out for his entire life. Undoubtedly, such personality was also Professor Zbigniew Witold Engel, to whom we said goodbye on November, 6th, 2013, in the St. Clement’s church in Wieliczka. Professor was born on April 1, 1933, in Zawady near Zhovkva in the province of Lviv. After graduating from Jan Matejko Middle and High School in Wieliczka in 1950 earned a matriculation certificate. Then he began his studies at the Department of Communications of Polytechnic Departments of Academy of Mining and Metallurgy and involved with our university for the next 63 years. October 1, 1952 the Department of Mechanics of the University of Mining and Metallurgy was created, and soon after began professor’s adventure that was the work of science, education and organization. The history and fate of our university are inextricably linked with the person of professor who practically since the very beginning of the Faculty supported it in all areas of its activities, and has always actively participated in academic life.

scholarly journals A Miracle That Accelerates Operating Room Functionality: Sugammadex

2014 ◽  
Vol 2014 ◽  
pp. 1-4 ◽  
Author(s):  
Erdal Dogan ◽  
Mehmet Salim Akdemir ◽  
Abdulmenap Guzel ◽  
Mehmet Besir Yildirim ◽  
Zeynep Baysal Yildirim ◽  
...  
Keyword(s):  
Cholinesterase Inhibitors ◽  
Neuromuscular Block ◽  
Good Alternative ◽  
Cylindrical Shape ◽  
Hemodynamic Parameters ◽  
Time Period ◽  
Extubation Time ◽  
Before And After ◽  
Residual Block ◽  
Time Of Administration

Background.Sugammadex offers a good alternative to the conventional decurarisation process currently performed with cholinesterase inhibitors. Sugammadex, which was developed specifically for the aminosteroid-structured rocuronium and vecuronium neuromuscular blockers, is a modified cyclodextrin made up of 8 glucose monomers arranged in a cylindrical shape.Methods.In this study, the goal was to investigate the efficacy of sugammadex. Sugammadex was used when there was insufficient decurarisation following neostigmine. This study was performed on 14 patients who experienced insufficient decurarisation (TOF<0.9) with neostigmine after general anaesthesia in the operating rooms of a university and a state hospital between June, 2012, and January, 2014. A dose of 2 mg/kg of sugammadex was administered.Results.Time elapsed until sugammadex administration following neostigmine37 ± 6min, following sugammadex it took2.1 ± 0.9min to reach TOF≥ 0.9, and the extubation time was3.2 ± 1.4min. No statistically significant differences were detected in the hemodynamic parameters before and after sugammadex application. From the time of administration of sugammadex to the second postoperative hour, no side effects or complications occurred. None of the patients experienced acute respiratory failure or residual block during this time period.Conclusion.Sugammadex was successfully used to reverse rocuronium-induced neuromuscular block in patients where neostigmine was insufficient.

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