Coal is a naturally occurring solid fuel used, among others, for heating and for electricity production. Despite the development of the gas and heating network in our country, as well as the growing interest in the use of renewable energy sources, it still remains the most frequent fuel burned in local sources for the production of thermal energy. The article describes actual heating coal demand in the municipal and residential sector, with the distinction of different assortments, depending on the solid fuel heating source applied. Moreover, a subjective list of factors that have a key impact on the change in heating coal demand for this market was presented, taking the regulatory environment, global trends in housing heating and statistical surveys on the preferences for individual heat sources replacement into account. The confrontation of observed phenomena allowed for possible scenarios of changes in the demand for heating coal with the prospect until 2030, broken down into its individual assortments to be elaborated.

Casting process takes a major percentage of manufacturing products into consideration. No-bake casting is swiftly developing technology for foundry industries. In the no-bake family, furan no-bake casting process employs resins and acid catalyst to form a furan binder system. However, this process configures castings with augmented strength and quality surface finish. Compressive strength, transverse strength and tensile strength of moulds are also high in this furan binder system. Hence this method is apt for producing accurately dimensioned castings. Our well thought-out deliberations in the subsequent write up entail the numerous effects of variation of resin and acid catalyst on the surface defect i.e. sulfur diffusion on the surface of FNB casting. Furan resin; used in the production of casting is furfuryl alcohol and acid catalyst is sulphonic acid. Sulfur diffusion is tested by Energy-dispersive X-ray spectroscopy (EDX) analysis and also by the spectrometer with jet stream technology. This paper also comprises economic advantages of optimizing resin because furan resin is expensive and catalyst with reduction of sulfur diffusion defect as it saves machining, labor cost, and energy.

The methodology used in patrology - patristics results from its classification into purely theological disciplines. Before Vaticanum II the term patrology was used in a historical-philosophical sense, which led to perceiving patrology as a historical field of study. The study dealt with the old Christian writings from the chronological and literary point of view. This approach implied using research methodology typical of historical sciences. Since the Vatican Council II patrology has been considered a branch of theology and the name patristics has been used more often. Gradually its close association with dogmatics has been observed. The aim of patristics is to present theological thoughts of the Church Fathers. To achieve this objective a researcher has to carry out a thorough analysis of the Church Fathers’ writings by means of theological and literary criteria within the historical context. By resorting to the teaching of the Church Fathers patristics should show the development of theological thinking without identifying itself with Church history, the history of dogmas or ancient Christian literature.

The text attempts to show the forgotten beauty in architecture. It seems, that the “drawn” architecture can reveal more than the real — built one. The avant-garde of the early 20th century killed in art the need to strive for beauty. Novelty and contemporarily advertising form of architecture are becoming the most important. However, the problem of beauty seems to be still interesting in art. Architecture is slowly departing from the functionalist way of creating, yet it cannot return to the beauty, that once was so important. It is the drawn one, carrying the message of unreality, that makes it possible to return to the forgotten approach to creation. Architects’ drawings can bring back a visionary and idealistic message.

O b j e c t i v e s: Pill-takers seem to have some deficiencies in developing problem-solving styles, in which it plays an important role in their mental health. The present study has aimed to examine the role of problem-solving styles in individuals who have suicidal behavior by taking pills.

M e t h o d s: This research is a case-control study in which 100 people who had attempted to commit suicide by taking pills and had gone to the toxicity emergency room of the Razi Educational and Therapeutic center in Rasht city, were compared with 100 normal people who were selected as the control group. These two groups of people were compared with each other in terms of their problem-solving styles (which is measured using Cassidy and Long problem solving styles questionnaire).

R e s u l t s: After adjusting the effects of the confounding variables, i.e. level of education, marital status, residential status, history of psychiatry and alcohol addiction, it became clear that pill-takers group in comparison with the control group scores significantly higher in the non-adaptive problem-solving styles i.e. helplessness, problem-solving control, and avoidance styles (P < 0.0001) and also lower scores in adaptive styles, i.e. creative, confidence and approach styles (P < 0.0001). The interactive effects of group membership and gender were not significant in any of the problem-solving styles (P < 0.05).

C o n c l u s i o n s: Problem-solving styles are regarded as important risk factors when it comes to attempting to commit suicide by taking pills. Thus, it is essential to teach problem-solving styles to at-risk patients in order to preventing suicidal behavior.