bluuebunny/crossref_metadata_2025 huggingface dataset:
Kierunki zaangażowania Jana Korneckiego w prace zjednoczeniowe polskich towarzystw oświatowych w latach 1923-1935
Authors: Michalski Grzegorz
Published: February 2020

After Poland regained independence in 1918, educational societies played an important role in the education of the society. Jan Kornecki was one of many community workers who continued activities in that area started during the times of national bondage. On behalf of the Polish Educational Society in Warsaw [Polska Macierz Szkolna], he became a member of a pioneer group trying to unify the actions and strengthen the cooperation between educational societies in various districts of Poland. After the establishment of the Liaison Commission of Polish Educational Societies [Komisja Porozumiewawcza Polskich Towarzystw Oświatowych], he accepted the position of the secretary of the Commission’s Executive Department and was responsible for initiating and maintaining permanent contacts between the societies forming the Commission. Apart from maintaining ongoing relationships with community workers in the places of their local activities, he prepared the First Polish Educational Congress, which was convened in December 1924 in Warsaw. J. Kornecki rendered great services in founding a new educational organization named The Union of Polish Educational Societies [Zjednoczenie Polskich Towarzystw Oświatowych], which was established in 1927 based on the experiences gathered by the Liaison Commission, which operated earlieroku He took the function of the manager of the Union’s Executive Department Office; his responsibilities included delegating and supervising tasks performed by clerks employed in the Office, managing the property and funds, and drawing up reports of activities. He moreover organized and convened annual and extraordinary meetings of delegates and implemented the resolutions adopted, prepared plans and programmes of quarterly off-schedule meetings of the Executive Department, represented the Union during external relations, mainly with state and local government institutions and first of all initiated and maintained regular relationships with separate associations and provided them with all kinds of aid, e.g. by organizing annual conferences for educational managers.
ICT w edukacji, profilaktyce i terapii – przykłady dobrych praktyk
Authors: Borzucka-Sitkiewicz Katarzyna
Published: February 2020

The dynamically developing global IT infrastructure and the increasing importance of modern information technologies represent a huge challenge in the process of socialization and education of children and young people. Undoubtedly, it is extremely important to prepare current and future generations for a skillful use of modern technologies. Therefore, it is essential to implement new technologies in the teaching process at all levels of education as well as during preventive and therapeutic activities. This study analyzes the functioning of three institutions that use modern information technology within educational, preventive and therapeutic interventions. These institutions have been selected to be environmentally diverse, show the international context and demonstrate a different potential for ICT use. The main objective of the research was to identify innovative ways of using modern technologies in supporting educational and compensatory activities undertaken by selected institutions.
School Psychologist’s Interventions to Promote Successful School Re-Entry of Chronically ill Children Aiming at Altering Peers’ Attitudes Towards Them
Authors: Nowakowska Iwona
Published: February 2020

The aim of this article is to outline school psychologist’s interventions, which might be useful while supporting a chronically, somatically ill child in their re-entry to school, aiming at broadening their peers’ knowledge about the chronic disease and positively changing their attitudes towards the ill child. In the first part, the importance of peer relationships in childhood and adolescence, the relation of their quality to school absences and the positive role of school attendance in the process of adapta-tion to illness and recovery, are presented. Then, the arguments for school psychologist to become an agent of child’s positive school re-entry are provided. A framework of tasks to be performed by psy-chologist in the school setting is outlined. The second part focuses on the interventions which might be useful to meet expectations the environment has towards school psychologist in case of an ill child’s return to school. Among them, negative messages’ delivery, educational workshops design and deli-very, promoting self-advocacy of the child, preventing violence and supporting child’s siblings have been chosen as important areas of actions related to the child’s peers. A selection of suggestions how to deal with these diverse fields of activity has been outlined, basing on re-entry models, as well as on useful directions and interventions to prevent bullying and support children in developing psychoso-cial competences, which are discussed in research reports, metaanalyses and professional literature.
Promocje doktorskie jako ceremonie akademickie
Authors: Szymczak Emilia
Published: February 2020

Academic regalia, symbols and ceremonies are an important element of university reality. The ruling force here is the tradition and continuity of the preservation of symbols since the Middle Ages. The awarding of academic degrees and titles in the XXI century is still associated with a consistent structure during which specific rituals – characteristic for University or even each field of study – take place. They become an exemplification of prestige in the academic world, the position of professors, as well as other social groups, and crystallize the place in the hierarchy of various individuals and groups of people, as well as the academic capital that they represent. In this article, I will focus on this initial level of academic career which is a doctorate and especially at this ceremonial or symbolic ritual of passage – the doctoral promotion.
Selected issues of juvenile delinquency proceedings
Authors: Rajewska  de  Mezer Joanna
Published: February 2020

This paper discusses selected issues of juvenile delinquency proceedings. It points the reader’s attention to the difference in the approach towards a juvenile offender. This different approach consists in shaping the way the state reacts to them breaking a legal norm and directing it towards resocializing education. It underlines the specific characteristics of the interactions’ subject – a juvenile whose identity and social attitudes are in the making. These features justify the fact that educational and reformatory measures based on the law on juvenile delinquency proceedings are applied in their case, rather than the punitive ones defined in the Penal Code. The paper analyses selected topics related to executing specific (educational or reformatory) measures that spark controversy among the entities that take up educational, activating and aid-related actions.
Smartfon w klasie: Od zabawki do narzędzia edukacyjnego
Authors: Brosch Anna
Published: February 2020

Today’s children are growing up in a digital age that is far different from that of previous generations. Young children’s use of interactive screen media such as smartphones is increasing rapidly. A variety of mobile devices are all around, but they are still not accessible enough at schools, where the use of smartphones is usually forbidden.The aim of this research was to discover teachers’ opinion about using smartphones in class. The qualitative methodology was used in this study to analyse in depth the contextual factors concerning the use of smartphones during the education process. The analysis was based on data from 32 interviews with primary school teachers. The results of the study have shown that teachers do not incorporate smartphones into the education process, despite their positive attitude towards this kind of mobile devices.
Sprawozdanie z X Konferencji Organizacji Studenckich Wydziału Studiów Edukacyjnych Uniwersytetu im. Adama Mickiewicza w Poznaniu „Między radością a cierpieniem. Wyzwania współczesnej pedagogiki” Poznań, 17 maja 2018 roku
Authors: Ratajczak Łukasz P.
Published: February 2020

Sprawozdanie z X Konferencji Organizacji Studenckich Wydziału Studiów Edukacyjnych Uniwersytetu im. Adama Mickiewicza w Poznaniu „Między radością a cierpieniem. Wyzwania współczesnej pedagogiki” Poznań, 17 maja 2018 roku
The Relationships and Differences of the Kantian Philosophy and Pedagogy in Regard to Postmodern Pedagogic
Authors: Zieliński Paweł
Published: February 2020

The aim of the study is articulated in the title. The author is reconstructing Kantian philosophy and pedagogic, the thesis of postmodernism and post-modern pedagogic and indicates the relationships and differences of those two systems. Both Kant and the Baden-based neo-Kantians enabled the emancipation of the humanities. The Kantian model of pedagogy was the basis for pedagogic directions, belonging to the meta-theory of humanistic education and critical pedagogy, especially the postmodern one. There are clear links with Kantian ideas of pedagogy, the way to capture the role of dignity, knowledge and freedom in the morality of a human being. There are also significant differences: Kant did not include to his pedagogy social, political and pluralistic questions, which are so important in postmodern pedagogy.
VERİMLİLİK ve ÜRETKENLİK ÜZERİNE DÜŞÜNCELER
Authors: TOP Aykut
Published: February 2020

This paper discusses the concepts of efficiency and productivity and stresses their importance for countries in crises such as Turkey whose resources are scarce. The first point mentioned is the confusion in the definitions of efficiency and productivity in Turkey. In recent years the economy in developed countries is shifting more and more towards service sector, therefore in the second part of the paper service producing systems are considered. It is more difficult to measure the productivity in service organizations since both input and output have higher variety and also quality has more influence on the output than manufacturing organizations. So new means of measuring the output should be developed which also include quality. In the service sector, studies related with the measurement of productivity and efficiency need to be widened since the productivity is poor as opposed to the manufacturing sector. And in the last part of the paper the causes and remedies for the identified inefficiencies in a firm are discussed.
İŞLETMELERDE ŞÜPHELİ TİCARİ ALACAKLAR ve KARŞILIKLARININ HESAPLANMASINDA PERAKENDE SATIŞ YÖNTEMİ
Authors: AYBOĞA Hanifi , ASLANOĞLU Suphi
Published: February 2020

One of the most important problems which today’s economical conditions bring up is the finance problem of the corporations. Sales in business life are not always paid in cash. Deferred payment sales are more common than cash sales in these days. Bat, in deferred payment sales, problems such as receivables may not be collected in estimated time or may never be collected are met. One of the most important objectives in solving corporations’ finance problems is that receivables are followed up carefully and provided to be collected on time. As the days pass collection ratio of the corporations’ receivables decreases more and more and this case makes it difficult for corporations to run their operations. Corporations apply to legal bodies for the collection of such receivables.
TEMEL MUHASEBE VARSAYIMLARI ve MUHASEBE POLİTİKALARINA YÖN VEREN KAVRAMLAR
Authors: ÇAKICI Cemal
Published: February 2020

According to Turkish Accounting Standard-1: Disclosure of Accounting Policies, fundamental assumptions of accounting as follows: Continuing-concern concertConsistencyMatching principle
Also, the following considerations are important to select of accounting policies:ConservatismSubstance over formMateriality
The aim of this study is to state above concepts as practical.
ÇALIŞANLARIN GÜÇLENDİRİLME ALGILARI ÜZERİNE TUZLA BÖLGESİNDEKİ TİCARİ BANKALARDA BİR ARAŞTIRMA
Authors: CEYLAN Adnan
Published: February 2020

Today the interest of the academicians and practitioners in the concept of employee empowerment increases with the democratisation in the work place, the global competition and change and increasing the need for organizational efficiency and effectiveness. Thus, managers and scientists try to research and develop new management techniques like total quality management, team establishment and development, lean organization, learning organizations and employee empowerment. Participation has become more important with the new management understanding, employees are evaluated as strategic resources and as a result of this, they have had more competence, broader authority area and power over the work they do. And this situation make the empowerment of the employees more important. The aim of this study is to examine the “empowerment” subject - which finds its application area especially in the service sector, where human relations are very important, although it has been adopted by different organizations - in the banking field to build its conceptual frame and to investigate the perceptions of the employees about empowerment.
KÜÇÜK ve ORTA BOY İŞLETMELERİN BAŞARI VE BAŞARISIZLIK NEDENLERİ ÜZERİNE BİR ARAŞTIRMA
Authors: AKINCI Ayşehan
Published: February 2020

It has been given more importance to the Small and Medium Sized Enterprises (SMSE) because of the economic and social benefits. One to one interviews with all SMSE’s, operating in Mersin, were conducted to find out the performance factors. It was found that success factors seemed to be growth, quality, knowledge and job experience, honesty and hard-working, creativeness and flexibility, and operating with main capital; whereas macro and micro conditions seemed to be the reasons for failures.
TOPLAM KALİTE YÖNETİMİNİN TEMEL KAVRAMLARI
Authors: YILDIRIM Hakan
Published: February 2020

In our study, we tried to explain thinking fundamentals of Total Quality Management (TQM) which has been told too much since last years. This study has been done under eight topics. At the beginning, fundamentals that belongs to TQM had determined. At continuation it tried to be explained by using concrete datums. In our study, benefits that TQM has done to enterprise has explained however we have put opinions of the scientists against to TQM. At first part we tried to explain the importance which TQM attaches to people. At second part we explained effects of TQM on managing culture. At continuation, customer centered management mentality, top management leadership and responsibility, complete participation at management, motion by team, perpetual development and management according to aim subjects have tried to be explained.
DİSKRİMİNANT ANALİZİ: AKADEMİSYENLER ÜZERİNE BİR UYGULAMA
Authors: BAYRAM Nuran
Published: February 2020

This paper examines various factors that are related to the problems academicians face in their working life. Applying discriminant analysis, the variables that have discriminating effects among academician’s sex, title and marital status are brought to light.
Gleichgewicht vor Westbindung. Die Regierung Schmidt und die „Neutronenbombe“ (1977/78) – eine Neubewertung
Authors: Lutsch Andreas
Published: February 2020

Das Geschichtsbild zur Kontroverse um die „Neutronenbombe“ 1977/78 ist geprägt von einer Standarderzählung: Diversen Schwierigkeiten und großer Umstrittenheit zum Trotz habe die Bundesrepublik Deutschland die Stationierung dieser Nuklearwaffe in ihrem Gebiet letztlich befürwortet, während die Entscheidung von US-Präsident Jimmy Carter von Anfang April 1978, die Waffe einstweilen nicht lagerungsbereit produzieren zu lassen, rätselhaft bleibt. Dieser Artikel bietet eine archivalisch abgestützte Neubewertung, die eine auch hinsichtlich ihres Ausgangs vermeintlich wohlverstandene Krise der NATO und der deutsch-amerikanischen Beziehungen von großer zeithistorischer Bedeutung einer robusteren historischen Bewertung zuführt. Diese Neubewertung lässt sich in einer zentralen These verdichten: Die Regierung Schmidt wirkte mit Erfolg darauf hin, die von ihr nicht offen abgelehnte Lagerung dieser Nuklearmunition für Gefechtsfeldartillerie in der Bundesrepublik ad calendas graecas aufschieben zu können und landgestützte nukleare Mittelstreckenwaffen in der NATO evolutionär zu modernisieren. Wo die bundesdeutschen Prioritäten für die TNF-Modernisierung lagen, wurde in der Affäre um die „Neutronenbombe“ 1977/78 sehr deutlich – wenn auch nicht in der Öffentlichkeit.
Separation of radiosilver from a cyclotron-irradiated palladium target
Authors: Ohya Tomoyuki , Nagatsu Kotaro , Hanyu Masayuki , Minegishi Katsuyuki , Zhang Ming-Rong
Published: February 2020

We studied the simple separation of radiosilvers from proton- or deuteron-irradiated natural palladium (natPd) targets, and successfully separated radiorhodium, radiosilver and radiopalladium using an anion-exchange resin. The yields of radiosilvers were 105Ag: 1.0 ± 0.32 MBq/μAh; 106mAg: 2.0 ± 0.64 MBq/μAh; 110mAg: 0.019 ± 0.0063 MBq/μAh (n = 4) at the end of bombardment with a total recovery rate of 98 % under the following irradiation conditions (deuteron beam energy: 20 MeV; beam current: 10 μA; irradiation time: 2.25 ± 0.50 h). We also evaluated the recycling of the palladium target.
The study of time dependence of particle flux with multiplication in a random medium
Authors: Lotova Galiya Z. , Mikhailov Guennady A.
Published: February 2020

Algorithms of Monte Carlo method for estimating probabilistic moments of the parameter of time exponential asymptotics of particle flux with multiplication in a random medium are constructed. It was analytically and numerically shown that the asymptotics of the mean number of particles is close to an exponential one with the factor containing a summand proportional to square of time.
Pressure pain thresholds in children before and after surgery: a prospective study
Authors: Pedersen Line Kjeldgaard , Martinkevich Polina , Rahbek Ole , Nikolajsen Lone , Møller-Madsen Bjarne
Published: February 2020

Background and aims

This prospective study aimed to assess pressure pain thresholds (PPTs) by pressure algometry and the correlation to postoperative pain in children undergoing orthopaedic surgery. We hypothesized, that the PPTs would decline immediately after elective orthopaedic surgery and return to baseline values at follow-up.

Methods

Thirty children aged 6–16 years were included. PPTs and intensity of pain (Numerical Rating Scale, NRS) were assessed 3–6 weeks before surgery (baseline), 1–2 h before surgery (Day 0), the first postoperative day (Day 1) and 6–12 weeks after surgery (Follow-up).

Results

A significant difference of PPTs between the four assessments was seen using the Friedman test for detecting differences across multiple tests and Wilcoxon signed-rank test with a Bonferroni adjustment. The changes in PPTs between baseline (PPTcrus = 248 kPa, PPTthenar = 195 kPa) and day 1 (PPTcrus = 146 kPa, PPTthenar = 161 kPa) showed a decline of PPTs as hypothesized (Zcrus = 2.373, p = 0.018; Zthenar = 0.55, p = 0.581). More surprisingly, a significant decrease in PPTs between baseline and day 0, just before surgery (PPTcrus = 171 kPa, PPTthenar = 179 kPa), was also measured (Zcrus = 2.475, p = 0.013; Zthenar = 2.414, p = 0.016). PPTs were positively correlated to higher age, weight and height; but not to NRS or opioid equivalent use.

Conclusions

Children undergoing orthopaedic surgery demonstrate significant changes in PPTs over time. The PPTs decrease significantly between baseline and day 0, further decreases the first day postoperatively and returns to baseline values at follow-up. This suggests that other factors than surgery modulate the threshold for pain.

Implications

Awareness of pressure pain thresholds may help identify children with affected pain perception and hence improve future pain management in children undergoing orthopaedic surgery. Factors as for example anticipatory anxiety, psychological habitus, expected pain, catastrophizing, distraction, physical activity, patient education and preoperative pain medication might play a role in the perception of pain and need further investigation.
Serendipitous formation of K15NaSn5F36
Authors: Stoll Christiane , van Gerven David , Huppertz Hubert
Published: February 2020

K15NaSn5F36 crystallizes in the hexagonal crystal system with space group P63/m and lattice parameters of a = 1060.3(2) and c = 2011.9(4) pm. The unit-cell volume amounts to 1.9588(7) nm3. Its fundamental building blocks are quasi-isolated [SnF6]2− and [NaF6]5− octahedra, which are imbedded into a matrix of potassium cations. Within the structure, these units form a layer-like arrangement consisting either of mixed [SnF6]2−/[NaF6]5− or pure [SnF6]2− layers. The structural model was further confirmed by BLBS and CHARDI calculations.
Manifestations of allostatic load in residents of radiation contaminated areas aged 18–24 years
Authors: Sokolenko V. L. , Sokolenko S. V.
Published: February 2020

We studied the features of allostatic load (AL) in 100 students aged 18–24 years old who, from birth to adulthood, lived in the territories assigned to the IV radiation zone after the Chornobyl accident (density of soil contamination by isotopes 137Cs 3.7–18.5∙104 Bq/m2) and underwent prolonged exposure to small doses of ionizing radiation. The examined students did not have any clinical signs of the immune-neuroendocrine system dysfunction. 50 people had signs of vegetative-vascular dystonia syndrome (VVD), 48 had signs of moderate hyperthyroidism and 21 had signs of moderate hypothyroidism. During the examination session, as a factor of additional psycho-emotional load, in 66 of the examined the immunoregulatory index CD4+/CD8+ went below the lower limit of the homeostatic norm, in 62 of the examined low density lipoprotein cholesterol (LDL-C) exceeded the upper level. The relative risk (RR) and attributable risk (AR) of the participation of potential secondary factors of allostatic load formation in CD4+/CD8+ immunoregulatory index going below the lower limit were calculated. The presence of statistically significant relative risk of participation in the formation of suppression of the index CD4+/CD8+: the state of hyperthyroidism, state of hypothyroidism, vegetative-vascular dystonia syndrome, higher than normal LDL-C. When the examined students combined the signs of hyperthyroidism, vegetative-vascular dystonia syndrome and higher level of LDL-C; with combination of signs of hypothyroidism, vegetative-vascular dystonia syndrome and higher level of LDL-C. The attributable risk in all cases exceeded 0.10, which confirmed the importance of some of these factors and their complexes in the formation of the effect of reduced immunoregulatory index. The CD4+/CD8+ index can be considered an important biomarker of AL and premature age-related changes in the immune system in residents of radiation-contaminated areas. The risk of AL formation in the case of occurrence of a complex of mediated secondary biomarkers (vegetative-vascular dystonia syndrome, thyroid dysfunction, hypercholesterolemia) is higher compared to their individual significance.
Fruits of new selection forms and varieties of snowball tree for manufacture of products of therapeutic and prophylactic purpose
Authors: Moskalets T. Z. , Moskalets V. V. , Vovkohon А. H. , Knyazyuk O. V.
Published: February 2020

The paper presents the results of the comparative assessment of varieties and selected breeding forms of the snowball tree (Viburnum opulus L., Adoxaceae). The article presents the biochemical composition, marketable and taste qualities of fruits of varieties and elite forms of the snowball tree of regular selection of the Institute of Horticulture of the NAAS and its network, grown under conditions of the Central part of the Forest-Steppe of Ukraine. We selected the sources of specific economic and valuable features: large-fruits (weight of the fruit of 1.24–1.80 g, weight of bunch of 109–126 g – Velykoplidna, Ania, Uliana, ЕF-3-10-2010), high taste qualities – degustation evaluation of 8.8–9.0 points and chemical composition of fruits (EF-5-12-2012, EF-3-10-2010, Bagriana, Koralova). The study revealed that the fruits of some selection samples are promising raw materials for production of food products and ingredients of functional purpose, including syrups, mors, juices (varieties Kоrаlоvа, Bаhrianа, Аnia, Uliana, ЕF-3-10-2010, ЕF-5-12-2012, ЕF-7-31-12 with sugar-acid index of 4.86–7.63 and juiciness of the fruit of 4.86–7.63%); jelly, marmalade (Bаhrianа, Аnia, Kоrаlоvа, ЕF-3-10-2010, which have increased content of pectic substances – 9.1–13.0 mg/kg and Р-active compounds – 740–950 mg%); powdered food additives (Kоrаlоvа, ЕF-3-10-2010, ЕF-5-12-2012, ЕF-7-31-12); manufacturing pharmaceuticals (ЕF-2-56-13). Consumption of these products reduces the risk of diet-related diseases, preventing deficiency and replenishing nutrients in the human body, thus preserving and improving health due to the presence of physiologically functional ingredients in their composition. The modern food industry is paying more attention to healthy food with a balanced composition of nutrients, including functional products. Today the snowball tree is a nichе plant both in Ukraine and in the world. According to national scientists and market analysts, today some important factors of the cultivation expediency of snowball tree fruits can be distinguished. The weather and climate and soil conditions in Ukraine are quite favourable for cultivation of this plant. The creation of raw material zones would allow the population to be provided with functional products in sufficient quantity, and, if necessary, allow this plant to be cultivated for export.
Population dynamics and types of habitats at breeding sites of raptors (Falconiformes) of the Donetsk Ridge along a gradient of anthropogenic disturbance
Authors: Vysochyn M. O.
Published: February 2020

Studies of diurnal birds of prey may be quite indicative of the state of natural ecosystems and of the level of impact of human-induced factors on their functions. The aim of this work was to analyse the long-term dynamics of the raptor populations within the Donetsk Ridge, to identify which habitat or habitat mosaics are preferred in nesting territories and home ranges depending on the level of anthropogenic transformation of the environment. The studies were conducted in 1999–2019. The total length of the walking routes was 2,864 km while a distance of 1,548 km was covered by car routes. 306 nests of the birds of prey or those potentially belonging to the members of this group were found and re-examined. The long-term dynamics of the population of Falconiformes was characterized by a general decline in the numbers of most species. There was a loss of representatives of the boreal and desert-steppe faunistic complexes and simultaneous increase in the participation of representatives of the nemoral and forest steppe faunistic complexes associated with the floodplain forests of the Siversky Donets River valley and the bayrak oak forests of the central part of the Donetsk Ridge. The impact of the anthropogenic factor on the dynamics of the population of the birds of prey is ambiguous. For the species which are sensitive to changes in the environment, such as the European Honey Buzzard, the Northern Goshawk, the Merlin and the Red-footed Falcon, a general negative dynamics of the populations is observed. The positive trend in the numbers of the Long-legged Buzzard and the Saker Falcon is linked to the expansion of the both species into the territory of the Donetsk Ridge. The habitat structure of the nesting territories is quite diverse in different species of diurnal birds of prey. This is especially noticeable in the ratio of forest and grassland habitats. Based on the selectivity index, we found that the vast majority of the raptors of the Donetsk Ridge prefer temperate broad-leaved forests when choosing nesting territories. The structure of the home ranges of all forest species of diurnal birds of prey not only depends on the optimal ratio of open and forested areas but on the presence of ecotones of considerable length which originated in the complex mosaics of habitat complexes. The stable number of dendrophiles and the disappearance (decrease in number) of sclerophiles and campophiles indicates the least anthropogenic transformation of forest habitats and a radical transformation of open spaces – meadows and steppes. The most successful were eurytopic birds of prey and species with pronounced anthropotolerance.
Evaluation of antimicrobial properties of polymer nanocomposites for medical application
Authors: Hopta O. V. , Mishyna M. M. , Syrova A. O. , Makarov V. O. , Avramenko V. L. , Мishurov D. O.
Published: February 2020

The paper is devoted to the investigation of antimicrobial activity of polymer nanocomposites of both low-density polyethylene and nonwoven polymeric material (a mixture of woven and polyester fibers) that had been impregnated by Cu nanoparticles. The microorganisms were grown according to generally accepted microbiological rules and on media recommended for each bacteria family. Formation of biofilms of microorganisms was studied on the surface of microtiter plates for enzyme-linked immunosorbent assay. After incubation of microtiter plates, the culture medium was removed from the wells. The wells were rinsed five times with sterile distilled water. The plates were air dried for 45 minutes and each well was stained with 1% crystal violet solution in water for 45 min. After staining, the plates were washed with sterile distilled water five times. The quantitative analysis of biofilm production was done by adding 95% ethanol for discoloration of the wells. The research shows the antibacterial activity of Cu nanoparticles on planktonic forms of the investigated microorganisms, which prevented the formation of dense biofilms. With the use of low-density polyethylene impregnated by Cu the ability to form biofilms by planktonic cells of the referent strains of microorganisms was detected to decrease by 1.7 (Escherichia coli), 12.3 (Klebsiella pneumonia) times in the studied strains and with the use of nonwoven polymeric material treated by Cu nanoparticles, the ability to form biofilms decreased by 1.8 (Escherichia coli) – 21.8 (Klebsiella pneumonia) times in the studied strains. In subjecting the formed daily biofilms of referent strains of microorganisms to Cu nanoparticles, the destruction of biofilms of the studied strains of microorganism was observed as well as violation of the integrity of the biofilm monolayer and decrease of density index in comparison with control values. As a result, the obtained polymer nanocomposites can be recommended for preventive use in the fight against nosocomial infections. The practical relevance of this study lies in the possibility of reducing the incidence of purulent-inflammatory diseases and mycoses and, accordingly, reduction of the costs of treating these diseases.
Aktualitások a gyógyszer okozta állcsontelhalás primer és szekunder prevenciójának stratégiájában az evidenciák és a nemzetközi ajánlások tükrében
Authors: Vereb Tamás , Janovszky Ágnes , Mucsi Marietta , Piffkó József , Seres László
Published: February 2020

Absztrakt:

Bevezetés: A multifaktoriális, nem teljesen tisztázott
patomechanizmusú, gyógyszer okozta állcsontelhalás kezelése napjainkban is nagy
kihívást jelent a maxillofacialis sebészek és fogorvosok, valamint az onkológiai
és oszteológiai gyógyszert felíró kezelőorvosok számára.
Célkitűzés: Közleményünkben célul tűztük ki, hogy az
aktuális szakirodalom áttekintését követően bemutassuk a változásokat a
gyógyszer okozta állcsontelhalások patogenezisének, rizikótényezőinek, klinikai
megjelenési formáinak, illetve a megelőzési és az új terápiás lehetőségeknek a
tekintetében. Az elérhető nemzetközi ajánlások összehasonlításán, a nem sebészi
és a sebészi, valamint a stádiumspecifikus kezelési módok evidenciaalapú
bemutatásán túl a különböző orvosi-fogorvosi diszciplinákat érintő specifikumok
bemutatására is törekszünk. Módszer: Az elmúlt 5 évben – az
egyre növekvő számú betegségorientált adatbázisnak köszönhetően – a
szakirodalomban megnőtt a szisztematikus szakirodalmi áttekintések (systematic
reviews), ajánlások és metaanalízisek száma; ezek áttekintését és összehasonlító
elemzését végeztük el a kitűzött célok vonatkozásában.
Eredmények: Az American Association of Oral and
Maxillofacial Surgeons munkacsoportjának legutóbbi ajánlása óta eltelt 4 évben
is számos új gyógyszerhatástani csoport került a klinikusok látókörébe mint
osteonecrosist indukáló potenciális ágens, így a betegség nómenklatúrája tovább
cizellálódott, a betegcsoportok tovább specifikálódtak. A rizikóbetegek köre
kiszélesedett, új betegpopulációknak (reumatológiai-oszteológiai betegek,
immunszupprimáltak, transzplantáltak, új onkológiai ’target’ [célzott]
terápiában részesülők) kell a súlyos mellékhatás kialakulásával számolniuk.
Következtetés: Noha a betegcsoport kezelésében számos
kérdés továbbra is nyitva áll, a korábbi empirikus kezelési formák helyett egyre
erősebb evidenciákon alapuló, egyénspecifikus, stádiumadaptált terápiás
megoldások körvonalazódnak. Orv Hetil. 2020; 161(6): 214–223.
Intravascular imaging of atherosclerotic plaques in patients with cardiorenal syndrome: potential use of optical coherence tomography
Authors: Sozykin A. V. , Shevchenko O. P. , Naumov Ya. A. , Strokov A. G. , Vasilieva V. P. , Shevchenko A. O.
Published: February 2020

Currently, kidney transplantation and hemodialysis are the primary therapies for end-stage renal disease. High mortality, mostly caused by cardiovascular disease, remains the main challenge in the treatment of this category of patients. It has been shown that in patients with end-stage chronic kidney disease undergoing hemodialysis, the risk of mortality due to cardiovascular disease is up to 20 times higher than in the sex- and age-matched general population. The indicated data determined the appropriateness of isolating cardiorenal relationships into a single cardiorenal syndrome (CRS). Due to the facts mentioned above, intravascular imaging methods, notably optical coherence tomography (OCT), are particularly important in diagnosing coronary artery lesions. This review analyses the data published to date on the features and capabilities of OCT in CRS patients.
Current state of the problem and results of ex vivo perfusion of donor hearts
Authors: Zhulkov M. O. , Fomichev A. V. , Alsov S. A. , Cleaver E. N. , Chernyavsky A. M.
Published: February 2020

Patients with drug refractory end-stage heart failure fall into the severe category of cardiological patients. Numerous studies have shown the superior efficacy of heart transplantation over other treatments for end-stage chronic heart failure. However, despite decades of achievements in transplantology, shortage of donor organs remains a pressing and unresolved issue. The only way to reduce shortage of donor organs is to use donors with advanced criteria, which requires the use of latest technologies in organ resuscitation and conditioning.
Can We Infer Species Interactions from Co-occurrence Patterns? A Reply to Peterson et al. (2020)
Authors: Stephens Christopher Rhodes
Published: February 2020

No abstract.
Examination of the Academic Dissertations Related to the Problems Encountered in Social Studies Teaching: Meta-Synthesis Study
Authors: Uygun Kamil
Published: February 2020

he aim of the research is to examine the postgraduate theses about the problems encountered in social studies teaching with meta-synthesis study. The study was prepared with meta-synthesis design including thematic content analysis based on qualitative research methodology. The data of the master's and doctorate theses were collected from the National Thesis Center of the Council of Higher Education (YOK) via internet connection. The data were searched under the title of problems encountered in social studies teaching. The researches in this study were 28 master and 2 doctoral theses conducted between 2004-2018. The studies included in the research were determined primarily by reviewing the literature. Each of the identified studies was coded as 'A' by shortening 'Research'. A1, A2, A3,…, A30 codes were given and a detailed grading process was passed. All theses examined were primarily coded. Then all the coded data were tabulated for the themes created. The coded theses were tabulated according to the objectives, years, university, thesis type, sample region, model, method, results and suggestions. The frequencies of the theses that were coded into tables were found. The frequencies were interpreted in accordance with the meta-synthesis study. The prominent problems in research are; problems of teaching of the course, problems of program and textbook, problems in teaching of geography subjects and problems encountered in teaching of history subjects. In the research theses, some suggestions are made such as in-service training, tools, equipment and resource support, arrangement of program and textbooks, appropriate course teaching and increasing the hours of the course.
Novel coronavirus (2019-nCoV) real-time RT-PCR ORF1ab 2020 (Wuhan-ORF1ab; nCoV-specific test) v2
Authors: A Northill Judy , M Mackay Ian
Published: February 2020

A real-time RT-PCR to detect the "novel Wuhan" betacoronavirus or Wuhan seafood market pneumonia virus. Based on sequence MN908947 made available by Professor Yong-Zhen Zhang, Fudan University, Shanghai, China. The target region is within the ORF1ab sequence. Not tested on wild-type virus (as of 25Jan2020), it is expected to be capable of only detecting the Wuhan coronavirus. ·Limit of detection not yet determined. Notes Assay is fully optimised (as of 24Jan2020). A final name for this virus has not been decided (as of 25Jan2020).
Direct on Line Operation of Three Phase Induction Motor using MATLAB
Authors: Omar Adil , Abdulrahman Alaa , Rashed Ghamgeen
Published: February 2020

Induction motors are most widely used motors due to their reliability, robustness and low cost. However, huge starting current and sudden change in load current of three phaseinduction motor are the most problems in high power applications since these lead to damage the motor. Therefore, controlling the current during transient is essential to protectthe motor from damage. In order to control current instantaneously, it is required firstly to model the motor and secondly to represent the rotational three phase (current and voltage) instationary frame and this can be done using DQ modeling. The DQ modeling proposed in literature, the effect of friction was neglected and this reduces the correctness of themodeling. This Paper will look at the DQ modeling and method of starting up of the three phase induction motor. At first, the novelty of this paper is to find the friction of the motorpractically and include it in the DQ model. Then, it calculating three phase induction motor parameters which will help in the modeling process Then, it uses the direct on line method(DOL) to validate the DQ model using MATLAB/Simulink.
Adsorptive removal of methyl orange from aqueous solutions with natural Garmak clay as cheap and efficient adsorbent in batch and continuous systems
Authors: Babakr Karukh , Aziz Bakhtyar
Published: February 2020

The natural clay of North Garmak-Sulaimani was characterized with XRF, XRD and FTIR. The specific surface area (18.8 m2 g-1) was determined with N2 gas adsorption analyzer using multi-point BET isotherm and 0.054 cc g-1 total pore volume. The cation exchange capacity was estimated as 12.4 mmol/100 g of the natural clay by the method of Cu-triene complex. The efficiency of the natural clay was evaluated for the adsorption of a model anionic dye (methyl orange) in batch system. Non-linear curve fitting was used to examine the kinetic and equilibrium experimental data for appropriate model. Langmuir, Freundlich and Temkin isotherms were fitted well to the experimental data. The best fit was with Langmuir model with a monolayer adsorption capacity of 63.9 mg g-1 at 30 oC. The kinetic data were best fit with pseudo second-order model. The thermodynamic parameters confirmed a spontaneous endothermic adsorption process. To bring the study to industrial scale, clay granules was made from the natural clay powder and used as fixed bed adsorbent in a column for continuous system. The operational conditions were optimized. Thomas kinetic model was found to fit the experimental kinetic data.
Estimation of the Gingival microleakage of Two Composite Resins with Three Insertion Techniques for Class V Restorations (In-Vitro Comparative Study)
Authors: Al-Gailani Ubaydah , Alqaysi Salam
Published: February 2020

Objective: Evaluating the marginal microleakage of two different composite resins with three different restorative techniques in class V cavities with the cervical margins within the cementoenamel junction.        

Methods: Sixty standardized box-shaped class V cavities of 2×2×3 mm (depth, length, width) prepared on the buccal and lingual surfaces of 30 freshly extracted healthy human premolars. The teeth randomly divided into two equal groups: group A (FiltekTM Z250 XT) and group B (BeautifilTM II LS giomer). Then each group is subdivided into 3 equal subgroups: group I (bulk technique-10 cavities), group II ( split horizontal technique-10 cavities) and group III (vertical technique-10 cavities) and filled according to the manufacturer’s instructions. The samples were subjected to thermocycling (5°C ±2°C & 55°C ±2°C with a 30 seconds dwell time) and immersed in 2% buffered Methylene blue solution at 37°C for 24 hours. The restorations were sectioned longitudinally in buccolingual direction through the centers of the restoration. Then evaluated for microleakage using a stereomicroscope at 10x magnification and scored as 0, 1, 2, and 3. Non-parametric Mann-Whitney and Kruskal-Wallis tests were used and p value ≤ 0.05 considred statistically significant.

Results: Split increment horizontal layering technique showed statistically significant lower microleakage than vertical layering and bulk technique. While giomer showed less microleakage than Z250 but statistically not significant.

Conclusions: The use of split horizontal technique and giomer composite offers better and less marginal microleakage in class V restorations.
FEATURES OF NATIONAL POLICY IN APPROACHES TO ELECTROMAGNETIC FIELD SAFETY OF RADIO FREQUENCIES RADIATION IN DIFFERENT COUNTRIES
Authors: Grigoriev O. A. , Goshin Mikhail E. , Prokofyeva A. V. , Alekseeva V. A.
Published: February 2020

The article contains the analysis of modern approaches to determining the limits of the electromagnetic field of radio frequencies. The international discussion about the safe limits of electromagnetic radiation has been going on for half a century. In the 21st century, the national policy of electromagnetic safety is determined by the socio-economic priorities of countries and national legal principles of evidence of harm to health to a greater extent, than scientific data. There are three main approaches to determining the limits of electromagnetic fields. The Anglo-Saxon approach is based on the principle of passive regulation, i.e. using the recommended values of the permissible level of the electromagnetic field. The Soviet-Russian approach is based on establishing the maximum permissible level of the electromagnetic field, which guarantees no harm to present and future generations. The term of the maximum permissible level is historically associated with the concept of the priority of the nervous system responses to the influence of the electromagnetic factor. The state assumes responsibility for the scientific justification of the limit levels and implements the control functions for their observance, which allows excluding any harm to health. The third approach is based on the precautionary principle, the concept of which was first introduced in German law. It is aimed at preventing harm, in the absence of unambiguous, reliable scientific data and, in fact, it is a socially-oriented approach that takes into account social consensus in the context of the development of new technologies. Respectively, this approach implies strict maximum permissible levels (technically achievable), as well as a system of formal restrictions on placement of the electromagnetic field sources in the “susceptible” territories. Separately from the above approaches, a method of managing the safety of the electromagnetic environment in China has been formed: since 2015, electromagnetism has been fully attributed to environmental factors and is controlled by the Ministry of environmental protection. China has abandoned the hygienic regulation of the anthropogenic electromagnetic field, and the system, for establishing and monitoring the electromagnetic environment indices, combines elements of all three mentioned above approaches.
SEASONAL MONITORING ELECTROMAGNETIC SITUATION IN THE RADIO-FREQUENCY RANGE OF MOBILE COMMUNICATION
Authors: Rybalko S. Yu. , Yashchenko Svetlana G.
Published: February 2020

Introduction. The study of the electromagnetic environment created by mobile communication terminals (MCT) is one of the important tasks of modern preventive medicine. In the study, the assessment of the electromagnetic environment created by MCT according to fluence values. Material and methods. The fluence level of MCT radiation was determined in the territory of the Crimea using a mobile monitoring system. The number of paired (seasonally) fluence measurement points accounted for 2102. At each point, the level of electromagnetic radiation (EMR) was determined sequentially from two identical MP (Samsung G3) in voice mode with the remote subscriber. Results. The average fluence value in Crimea for the year amounted to 1.45 ± 0.06 μW/cm2. In the winter (non-resort) season fluence accounted for 1.34 ± 0.05 µW/cm2, in the summer (resort) season -1.54 ± 0.05 µW/cm2. A comparative non-parametric analysis of the winter and summer fluence values in the resort regions revealed significant differences, whereas in non-resort regions there were no significant differences. Obtained as a result of monitoring of the electromagnetic situation, the data showed significant heterogeneity of fluence by administrative units within the Republic of Crimea from 0.92 ± 0.03 in the Belogorskiy to 2.11 ± 0.07 μW/cm2 in the Chernomorsky regions, which indicates the difference in mobile coverage areas in Crimea. Significant differences between the fluence values obtained in the winter and summer seasons for resort regions can be explained by the uneven workload of base stations due to the seasonal dynamics of the influx of tourists. Conclusion. As a result of the work done, an average annual fluence value of 1.45 ± 0.06 µW/cm2 was obtained, its considerable heterogeneity and reliable seasonal changes were revealed. Keywords: seasonal monitoring; cell phone; fluence.