219 research outputs found
Photonuclear reactions with Zinc: A case for clinical linacs
The use of bremsstrahlung photons produced by a linac to induce photonuclear
reactions is wide spread. However, using a clinical linac to produce the
photons is a new concept. We aimed to induce photonuclear reactions on zinc
isotopes and measure the subsequent transition energies and half-lives. For
this purpose, a bremsstrahlung photon beam of 18 MeV endpoint energy produced
by the Philips SLI-25 linac has been used. The subsequent decay has been
measured with a well-shielded single HPGe detector. The results obtained for
transition energies are in good agreement with the literature data and in many
cases surpass these in accuracy. For the half-lives, we are in agreement with
the literature data, but do not achieve their precision. The obtained accuracy
for the transition energies show what is achievable in an experiment such as
ours. We demonstrate the usefulness and benefits of employing clinical linacs
for nuclear physics experiments
The Analysis of Collective Efficacy Perceptions of Athletes Playing in Table Tennis Leagues In Turkey in Terms of Some Variables,
In team sports, trust and the belief in being successful (collective efficacy) among the athletes of team
sports can be effective on performance. In the meantime, analyses of the factors that can be an effective factor
on perceptions of collective efficacy become more of an issue in terms of bringing a different perspective to the
subject. Therefore, the purpose here is to research the level of collective efficacy of athletes playing in table
tennis leagues in Turkey and the reasons affecting it. Target population of the study is composed of 597 players
playing in table tennis leagues of Turkey; its sample constitutes randomly selected 224 table tennis players.
A two-part questionnaire containing questions related to the demographic features and collective conscious
levels was applied to the participants. The questionnaire used in the study was previously used in another
study and its reliability was provided. Data of the questionnaire obtained from the participants were analyzed
with PASW Statistic 18 package program. Following the reliability analysis, Cronbach’s Alpha coefficient was
found as 0.90. As directed to the purpose of the study, Pearson correlation coefficient was used in analysis of
data and Kruskal Wallis test was applied in comparisons with three or more groups. Moreover, Chi-Square test
was used for independence research. Regression analyses were carried out with the purpose of determining
to what extent the variables affect each other. In line with the researches conducted and data obtained,
significant relations (<0.05) were found between the participants’ age, period of being registered athletics,
duration of playing in the same team and their collective efficacy perceptions. The more these variables
increase, the more the belief in the team and skills of team players increase in a positive way. In summary, it was
concluded that the variables of age,sex, period of being registered athletics, duration of playing in the same
team and total number of athletes are the factors that are effective on collective efficacy perception and it was
found that 82% of the participants are of the opinion that their teams have the capacity to show good
performance
Yükseköğretimde Spor Eğitimi Veren Kurumlarda Görev Yapan Akademik Personelin Elektronik Ticaret Hakkındaki Görüşleri,
In this study the views of the academic personnel working in institutions giving sports training at
higher education level in Turkey about electronic trade has been researched. Sample of the
study is constituted by 214 academic personnel working in institutions giving sports training at
higher education level in Turkey. Validity and reliability study improved by Sevindik (16) was
made to determine the views of the participants and “e-Trade User View Form” was used. SPSS
11.5 package program was used in assessment of the questionnaires and t-test, Variance
Analysis (ANOVA), Kruskal Wallis Test and LSD test analyses were made. As a result it was
observed that, 86% of the academic personnel working in institutions giving sports training at
higher education level in Turkey expressed the importance of electronic trade, 81,3% of them
expressed that they used electronic banking system and 59,9% of them emphasized that
electronic trade eliminates the traditional trade. Furthermore it was determined that there was a
significant difference between the views of the participants towards electronic trade according to
the variants of sex and education
Vİews Of The Teachers And Administrators Of The High School Of Fine Arts And Sports On Diversity Management,
This study was conducted for the purpose of determining the views on management
of diversity of the administrators and the teachers who work in Fine Arts and Sports High
Schools. The sample group of the study consisted of 12 administrators and 70 teachers
working in the fine Arts and Sports High Schools in province of Elazig, Usak, Trabzon,
Corum and Eskisehir. In order to determine the views of the sample group, a scale
developed by Balay and Saglam (2004) was used and the data obtained was analyzed in
the SPSS package program. In this study it was determined that managers didn’t
discriminate according to sexes, that there was a decrease in views of the managers and
teachers that personal attitudes and behaviors and the administrative practices and
principles were managed positively with their growing ages and that there was no
difference in views of the study group regarding the diversity management in their schools
according to their education status, vocational superiority, total service periods in
management, service status and vocational field variants. In conclusion, it can be
concluded that the differences between the administrators and the teachers in these
educational institutions have a positive impact on the direction of improving the quality of
education and that the employees’ beliefs, origins, cultural, etc. differences provide an
advantage for these institutions and finally there were no discrimination in their
administrative concepts
Case Report A Rare Cause of Urachal Adenocarcinoma: Urachal Diverticle
Urachus is the remnant of the embryologic allantois and the fetal bladder, extending form the bladder roof to the umbilicus. It degenerates in the prenatal period into a tissue band known as the median umbilical ligament. Incomplete degeneration may lead to urachal diverticle development. It is difficult to diagnose unless it is considered in differential diagnosis and imaging modalities are employed. This paper describes a patient treated with partial cystectomy for urachal diverticle, and the pathologic examination revealed urachal adenocarcinoma
Use of Spectroscopic Techniques to Monitor Changes in Food Quality during Application of Natural Preservatives: A Review
Consumer demand for food of high quality has driven research for alternative methods of food preservation on the one hand, and the development of new and rapid quality assessment techniques on the other hand. Recently, there has been a growing need and interest in healthier food products, which has led to an increased interest in natural preservatives, such as essential oils, plant extracts, and edible films and coatings. Several studies have shown the potential of using biopreservation, natural antimicrobials, and antioxidant agents in place of other processing and preservation techniques (e.g., thermal and non-thermal treatments, freezing, or synthetic chemicals). Changes in food quality induced by the application of natural preservatives have been commonly evaluated using a range of traditional methods, including microbiology, sensory, and physicochemical measurements. Several spectroscopic techniques have been proposed as promising alternatives to the traditional time- consuming and destructive methods. This review will provide an overview of recent studies and highlight the potential of spectroscopic techniques to evaluate quality changes in food products following the application of natural preservatives
The Protection of Animals through Human Rights. The Case-Law of the European Court of Human Rights
The chapter discusses the potential of a human rights framework to contribute to the growth and development of global animal law. It takes as example the jurisprudence of the European Court of Human Rights, and examine the major trends in the Court’s judgments and admissibility decisions that directly or indirectly concern the rights or welfare of animals. It is concluded that the Court is not indifferent to the welfare of animals, but that animal welfare is instrumentalised: it is understood not as a good in itself, but is instead valued for its implications for human welfare and rights. The chapter then considers the obstacles that the anthropocentrism of the human rights idea and the instrumentalisation of animal concerns present to the use of human rights frameworks to further the development of global animal law, as well as the opportunities that exist in the meeting of these paradigms. It concludes that although the telos of human rights law is different from that of animal law, nevertheless there exist many overlapping concerns within which mutually beneficial interactions are possible
Classification of the Mediterranean lowland to submontane pine forest vegetation
Vegetation SurveyAim: Vegetation types of Mediterranean thermophilous pine forests dominated by
Pinus brutia, Pinus halepensis, Pinus pinaster and Pinus pinea were studied in various
areas. However, a comprehensive formal vegetation classification of these forests
based on a detailed data analysis has never been developed. Our aim is to provide
the first broad-scale classification of these pine forests based on a large data set of
vegetation plots.
Location: Southern Europe, North Africa, Levant, Anatolia, Crimea and the Caucasus.
Methods: We prepared a data set of European and Mediterranean pine forest vegetation
plots. We selected 7,277 plots dominated by the cold-sensitive Mediterranean
pine species Pinus brutia, Pinus halepensis, Pinus pinaster and Pinus pinea. We classified
these plots using TWINSPAN, interpreted the ecologically and biogeographically
homogeneous TWINSPAN clusters as alliances, and developed an expert system for
automatic vegetation classification at the class, order and alliance levels.
Results: We described Pinetea halepensis as a new class for the Mediterranean lowland
to submontane pine forests, included in the existing Pinetalia halepensis order,
and distinguished 12 alliances of native thermophilous pine forests, including four
newly described and three informal groups merging supposedly native stands and
old-established plantations. The main gradients in species composition reflect elevational
vegetation belts and the west–east, and partly north–south, biogeographical
differences. Both temperature and precipitation seasonality co-vary with these
gradients.
Conclusions: We provide the first formal classification at the order and alliance levels
for all the Mediterranean thermophilous pine forests based on vegetation-plot data.
This classification includes traditional syntaxa, which have been critically revised,
and a new class and four new alliances. We also outline a methodological workflow that might be useful for other vegetation classification syntheses. The expert system,
which is jointly based on pine dominance and species composition, is a tool for applying
this classification in research and nature conservation survey, monitoring and
managementinfo:eu-repo/semantics/publishedVersio
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