scholarly journals Effect of Thermal Treatment on Selected Fire Safety Features of Tropical Wood 

Author(s):  
Linda Makovicka Osvaldova ◽  
Miroslav Gasparik ◽  
Javier Ramon Sotomayor Castellanos ◽  
Frank Markert ◽  
Patricia Kadlicova ◽  
...  

The subject matter of the article is thermally modified tropical wood (Meranti and Merbau) and its reaction on fire. Thermal treatment of wood (thermal wood) is a new technology of wood treatment improving its physical and biological properties and increasing its resistance to biological wood destroying processes and atmospheric effects. The fire and technical properties of thermal wood, especially its reaction to fire, have not been studied sufficiently. The latter is the subject matter of this article. A comparison is made to describe the influence of process temperatures of the thermal modification of selected tropical woody plants. Experimental equipment was non-standardized laboratory equipment using a flame source of higher intensity (flame burner - propane-butane) affecting the test sample in an open environment. This is a simulation of an actual fire. The performance of the thermally treated wood (20 °C, 160 °C, 180 °C) is evaluated by measuring the weight loss and the burning rate. The results are presented in tables and diagrams and are statistically evaluated. This study investigated the effects of the thermal treatment of Merbau and Meranti wood on selected burning characteristics. The results obtained from raw (untreated) wood test specimens were compared to results obtained from the test specimens subjected to thermal treatment at 160 °C, 180 °C and 210 °C. The monitored characteristics were weight loss and the burn rate. The results showed that the thermal treatment of Merbau and Meranti wood significantly increased its flammability and accelerated its combustion. In addition, its burn rate was higher than in untreated wood, reflecting that it is necessary to add fire retardants to thermally treated Merbau and Meranti wood.

Author(s):  
Eva Buranská ◽  
Peter Rantuch ◽  
Ivan Buranský ◽  
Alexandra Kucmanová

Abstract The main objective of this research was to analyse the limitations of iCT - industrial computer tomography for measuring the wood pores characteristics as a new non-destructive method which is primarily intended to measure and inspect complete components primarily made of plastics or light metal. The subject matter of this paper are wood samples of paulownia (Paulownia tomentosa) and ash (Fraxinus excelsior) before and after thermal treatment. Porosity, pore volume and distribution of pores on the wood samples before and after the heat treatment were measured by iCT Metrotom 1500. The total porosity of the samples before thermal treatment was 5.28 % (paulownia) and 14.90 % (ash), while after thermal treatment, porosity increased to 9.50 % (paulownia) and to 30.78 % (ash). Changes in the porosity of the samples before and after heat treatment show an increase in porosity of 3.87 % (paulownia) and 15.88 % (ash).


PMLA ◽  
1935 ◽  
Vol 50 (4) ◽  
pp. 1320-1327
Author(s):  
Colbert Searles

THE germ of that which follows came into being many years ago in the days of my youth as a university instructor and assistant professor. It was generated by the then quite outspoken attitude of colleagues in the “exact sciences”; the sciences of which the subject-matter can be exactly weighed and measured and the force of its movements mathematically demonstrated. They assured us that the study of languages and literature had little or nothing scientific about it because: “It had no domain of concrete fact in which to work.” Ergo, the scientific spirit was theirs by a stroke of “efficacious grace” as it were. Ours was at best only a kind of “sufficient grace,” pleasant and even necessary to have, but which could, by no means ensure a reception among the elected.


1965 ◽  
Vol 04 (03) ◽  
pp. 112-114 ◽  
Author(s):  
H. Zinsser

An outline has been presented in historical fashion of the steps devised to organize the central core of medical information allowing the subject matter, the patient, to define the nature and the progression of the diseases from which he suffers, with and without therapy; and approaches have been made to organize this information in such fashion as to align the definitions in orderly fashion to teach both diagnostic strategy and the content of the diseases by programmed instruction.


2018 ◽  
Vol 6 (3) ◽  
Author(s):  
Alawiye Abdulmumin Abdurrazzaq ◽  
Ahmad Wifaq Mokhtar ◽  
Abdul Manan Ismail

This article is aimed to examine the extent of the application of Islamic legal objectives by Sheikh Abdullah bn Fudi in his rejoinder against one of their contemporary scholars who accused them of being over-liberal about the religion. He claimed that there has been a careless intermingling of men and women in the preaching and counselling gathering they used to hold, under the leadership of Sheikh Uthman bn Fudi (the Islamic reformer of the nineteenth century in Nigeria and West Africa). Thus, in this study, the researchers seek to answer the following interrogations: who was Abdullah bn Fudi? who was their critic? what was the subject matter of the criticism? How did the rebutter get equipped with some guidelines of higher objectives of Sharĩʻah in his rejoinder to the critic? To this end, this study had tackled the questions afore-stated by using inductive, descriptive and analytical methods to identify the personalities involved, define and analyze some concepts and matters considered as the hub of the study.


2019 ◽  
Vol 3 (3) ◽  
pp. 660
Author(s):  
Ranirizal Ranirizal

Performance is the performance shown by educators, both in quality and quantity in carrying out their duties in accordance with the responsibilities given to them professionally. Educator performance development is a very decisive factor in the success of the education and learning process. In fact, in Kindergarten Rayon IV, Dumai City, there is still a low level of competency standards possessed by educators. The intended competency standard is from the standard academic qualifications and four competencies that must be possessed by a kindergarten educator, namely pedagogic, professional, social and personality competencies. This is evidenced by educators not yet mastering learning material with the maximum known when the learning process educators are not able to explain well the subject matter, and educators have not shown maximum performance in carrying out their duties and functions. The purpose of this study was to see whether there was an influence on teacher professionalism on teacher performance in Dumai IV Rayon Kindergarten. The results of the study prove that there is a significant relationship between the professionalism of Kindergarten educators and the performance of educators in Kindergarten Rayon IV, Dumai City. This is evidenced by the value of Sig (2-tailed) professionalism on educator's performance of 0,000, so the calculation shows 0,000 <0.05. This means that Ha is accepted, that is, there is a significant relationship between the professionalism of Kindergarten educators and the Performance of Educators in Kindergarten Rayon IV, Dumai City.


2019 ◽  
Vol 23 (1) ◽  
pp. 142-144
Author(s):  
Patrick Masiyakurima

Metahumaniora ◽  
2017 ◽  
Vol 7 (1) ◽  
pp. 1
Author(s):  
Ari J. Adipurwawijdana

ABSTRAKRiwayat yang disajikan penulis Britania era Viktorian tentang perjalannnya ke Amerikamengasumsikan adanya sebuah jaringan prasarana transportasi. Sistem transportasiterkait dengan riwayat perjalanan (travel narrative) dalam tiga hal, yaitu (1) sebagaibasis material bagi perjalanan, (2) sebagai substruktur riwayat, dan (3) sebagai pokokpembicaraan dalam riwayat itu sendiri. Buku Domestic Manners of the Americans (1832)merupakan model bagi cara infrastruktur transportasi menentukan aspek naratologis,yaitu urutan dan perspektif dalam struktur naratif riwayat perjalanan. Karya tersebut jugamenyajikan transportasi sebagai pokok pembicaraan dalam teksnya itu sendiri walaupun tidaksejauh sebagaimana yang tampak pada The Amateur Emigrant (1895) karya Robert LouisStevenson. Dalam hal ini, The American Scene (1907) karya Henry James juga relevankarena, walaupun tidak secara gamblang membicarakan transportasi sebagai topik dantidak pula menampakkan ciri-ciri riwayat perjalanan, karya tersebut merepresentasicara wawasan Britania-Amerika trans-Atlantik dianggap sebagai sesuatu yang lumrah.Wawasan ini juga memandang menganggap perjalanan trans-Atlantik sebagai semacamperjalanan menembus waktu, yang menunjukkan ketidaknyaman para penulis Britaniaabad kesembilanbelas terhadap transformasi sosial ke masyrakat demokratis yangdirepresentasi secara metaforis oleh pemahaman mereka tentang Amerika.Kata kunci: catatan perjalanan Viktorian, transportasi, wisataABSTRACTNarratives presented by Victorian British writers about their travels to America assume theavailability of a transprtation infrastructure system. Such a system is related to the travelnarrative in three things, namely, (1) as a material base for travel, (2) as a narrative substructurehistory, and (3) as the subject-matter of the narratives. Fanny Trollope’s Domestic Mannerof the Americans (1832) is a model for the way transportation infrastructure determinesnarratological aspects, namely order and perspective in the structure of the travel narrative.The piece also presents transportation as a subject-matter in its text although it does notgo so far as do Robert Louis Stevenson’s The Amateur Emigrant (1895). In discussingtransportation Henry James’ The American Scene is also relevant because, despite it’s notexplicitly speaking of transportation as a topic nor does it show the convential characteristicsof the travel narrative, the work represents a British-American trans-Atlantic world viewas a given. This world view also considers trans-Atlantic travels as a kind of voyage acrosstime, implying the discomfort of nineteenth-century British writers concerning the socialtransition into a democratic society represented by America as a metaphor.Keywords: Victorian travel narrative, transportation, tourism


2016 ◽  
Vol 14 (3) ◽  
pp. 147-162
Author(s):  
Stefan Marek Grochalski

Parliament – an institution of a democratic state – a member of the Union – is not only an authority but also, as in the case of the European Union, the only directly and universally elected representative body of the European Union. The article presents questions related to the essence of parliament and that of a supranational parliament which are vital while dealing with the subject matter. It proves that the growth of the European Parliament’s powers was the direct reason for departing from the system of delegating representatives to the Parliament for the benefit of direct elections. It presents direct and universal elections to the European Parliament in the context of presenting legal regulations applicable in this respect. It describes a new legal category – citizenship of the European Union – primarily in terms of active and passive suffrage to the European Parliament, as a political entitlement of a citizen of the European Union.


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