Mikus A.,University Przyrodniczo Humanistyczny edlcach |
Bielinska M.E.,University Przyrodniczo Humanistyczny edlcach |
Lipinska T.,University Przyrodniczo Humanistyczny edlcach |
Ostrowski S.,University Przyrodniczo Humanistyczny edlcach
Synthetic Communications | Year: 2011
A practical and proecological improvement for synthesis of meso-tetraphenylporphyrin (meso-TPP) under microwave irradiation is described. A cyclocondensation reaction of benzaldehyde and pyrrole followed by oxidation of the porphyrinogen formed as an intermediate in a small amount of propionic acid at 120 °C (under controlled microwave heating) resulted in conversion to meso-TPP in a reasonable yield (ca. 30%) in preparative-scale experiments (300-500 mg). The influence of many parameters such as the concentration of reagents, catalyst, solvent, temperature, reaction time, and oxidant on the reaction yield was studied. The environmental motive in this improvement is reduction of solvent volume (ca. 250 times). Also, some toxic reagents were eliminated from the procedure. Copyright © Taylor & Francis Group, LLC.
Brzostek-Pawlowska J.,Instytut Maszyn Matematycznych |
Mikulowski D.,University Przyrodniczo Humanistyczny edlcach
2012 Federated Conference on Computer Science and Information Systems, FedCSIS 2012 | Year: 2012
Attempts to allow the blind to read and write mathematical texts have been made for many years. Such research is conducted both in Poland and abroad. Nevertheless, there is still no complex solution to this problem that would satisfy the users thoroughly. The greatest difficulty facing blind and sighted individuals working on texts containing mathematical formulae together is that in sighted people's notation, these expressions take form of two-dimensional sets of graphical symbols, while Braille provides linear, often context-dependent notation for such expositions. This paper presents identified cases of work and education in mathematics that require new technologies to improve cooperation between the blind and the sighted who do not know Braille nor Braille Mathematics Notation. The research initiated by the Institute of Mathematical Machines discussed herein is aimed to develop innovative technologies that will improve communication, Web-based and else, between blind and sighted individuals in the area of mathematics. © 2012 Polish Info Processing Socit.
Mazurek-Kusiak A.,University Przyrodniczy blinie |
Soroka A.,University Przyrodniczo Humanistyczny edlcach |
Wojciechowska-Solis J.,University Przyrodniczy blinie
Sylwan | Year: 2016
Forest areas are treated as one of the most Important resources for a modern human, which is an integral part of his existence. The aim of this study was to determine a degree of the influence that forest environment has on the psychological and physical development of Polish teenagers as well as to recognize the motives having the greatest impact on the need of school youth to stay in the forest environment. We also tried to define skills and values acquired by young people through the use of forest areas. Wre used a diagnostic survey method. Authorś questionnaire was applied to survey 3,590 respondents all over Poland. The study was conducted in May and June 2014. Altogether we surveyed 1,206 high school students, 1,186 junior high students and 1,198 pupils from the elementary schools. The discriminant function was applied for statistical analyzes. The main motives for young people to stay in the forest environment were resting, gathering undergrowth, physical recreation as well as education on the economy and protection of forest resources (tab. 1). The co-participants of young people were mostly parents, to a lesser extent, tourist guides, foresters and educators dealing with forestry issues. Young people often organized trips to the forest areas on their own (tab. 2). Teenagers treat the forest as a place of physical and mental regeneration, a place of active resting by practicing such forms of recreational activities as walking, jogging, nordic walking, cycling and, to a lesser extent, horse riding and skiing (tab. 5). They also strongly emphasized the possibility to gather undergrowth in the forest areas. The forest resources are an important place for practicing physical recreation, relaxation and regeneration of psychophysical forces of Polish schoolchildren (tab. 4). The forest environment gives young people the opportunity to relax, restore emotional balance and to enjoy their stay in the bosom of nature. The forest environment influences the acquisition and improvement of many skills related to healthy lifestyle as well as cognitive elements associated with forest management and the function of forest (tab. 3). Despite the significant role of forest services in educational activities, the main responsibility of preparing children and young people to skillful use of forest resources rests on foresters and educators related to the forest environment.
Mikulowski D.,University Przyrodniczo Humanistyczny edlcach |
Brzostek-Pawlowska J.,Instytut Maszyn Matematycznych
IEEE Global Engineering Education Conference, EDUCON | Year: 2014
Although an existing different traditional and modern computer techniques, the realization of technical (mathematics and physical) education of the blind and visually empired students at present time is not an easy task. The problem becomes important at a case when the student is a blind person and a teacher is a sighted one who does not know any assistive techniques such as Braille alphabet, screen readers and screen magnifiers software. A new computer remote education technology such as touchscreen mobile devices or graphically available resources that are usually used to derive an education of normal students makes a big barrier for the blind. The barriers to access for blind students to both electronic educational resources as well as remote services on mathematics and physics resulting from the use of other user interfaces for sighted and blind students. Especially important there are differences in the presentation technologies and ways of editing mathematical formulas and drawings. In the paper, the proposal of solutions to help blind students to learn and perform basic mathematical operations with the help of touch screen mobile devices and the presentation of mathematical drawings using 3D printing technologies are explained. These solutions are part of a larger research project that purpose is to develop a mobile platform supporting mathematical and physical education for the blind by sighted teachers. © 2014 IEEE.
Wyrebek P.,University Przyrodniczo Humanistyczny edlcach |
Osuch-Kwiatkowska A.,Polish Academy of Sciences |
Pakulski Z.,Polish Academy of Sciences |
Jarosz S.,Polish Academy of Sciences |
Ostrowski S.,University Przyrodniczo Humanistyczny edlcach
Journal of Porphyrins and Phthalocyanines | Year: 2013
The synthesis of porphyrins conjugated with sugar moieties is described. meso-Aminophenyl-substituted and β-amino-substituted porphyrin derivatives reacted with benzyl protected glucuronic acid leading to gluco-conjugated hybrids, which after reductive deprotection of OH groups (H2, 10% Pd/C) gave the desired target products of increased hydrophilicity. Alternatively, this type of similar conjugates were obtained through S NAr reaction of meso-tetrakis(pentafluorophenyl)porphyrin with aminomethyl sacharides. The substitution took place selectively in para-position of meso-perfluorophenyl rings, thus giving rise to one, two, or three times substituted products carrying N-linked glucoside residues. © 2013 World Scientific Publishing Company.