128 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 socio-cultural perception of death in Turkish society recorded in lament epics (1955-1975)
This study explores the socio-cultural perception of death among Turkish people. For this reason, 210 published lament epics written by Turkish folk singers across all of Turkey concerning deaths between 1955 and 1975 were selected for analysis. These epics were published on single pages and were sold. The statistical analysis based on detailed content analysis was done at the univariate, bivariate, and multivariate levels. The results of the study provide a full picture of perception of cases of death in Turkish society. These results show Turkish society is especially sensitive to cases of death at young age and to the murdered. Further, a clear perception of the working of fate is encountered in deaths resulting from disaster and accidents; but the desire for vengeance is recorded in those laments concerning martyrs and the murdered. The statistical data show that most commonly cited reasons for death after road accidents, were a consequence of relationships with the opposite sex and from a sense of honor. © 2014, Baywood Publishing Co., Inc
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
High-K volcanism in the Afyon region, western Turkey: from Si-oversaturated to Si-undersaturated volcanism
Volcanic rocks of the Afyon province (eastern
part of western Anatolia) make up a multistage potassic and ultrapotassic alkaline series dated from 14 to 12 Ma. The early-stage Si-oversaturated volcanic rocks around the Afyon city and further southward are trachyandesitic volcanic activity (14.23 ± 0.09 Ma). Late-stage Si-undersaturated volcanism in the southernmost part of the Afyon volcanic province took place in three episodes inferred from their stratigraphic relationships and ages. Melilite–
leucitites (11.50 ± 0.03 Ma), spotted rachyandesites, tephryphonolites and lamproites (11.91 ± 0.13 Ma) formed in the first episode; trachyandesites in the second episode and finally phonotephrites, phonolite, basaltic trachyandesites and nosean-bearing trachyandesites during the last episode.
The parameter Q [normative q-(ne + lc + kls + ol)] of western Anatolia volcanism clearly decreased southward with time becoming zero in the time interval 10–15 Ma.
The magmatism experienced a sudden change in the extent of Si saturation after 14 Ma, during late-stage volcanic activity of Afyon volcanic province at around 12 Ma, though there was some coexistence of Si-oversaturated and Si-undersaturated magmas during the whole life of Afyon volcanic province
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
Recent advancements in the breeding of sorghum crop: current status and future strategies for marker-assisted breeding
Sorghum is emerging as a model crop for functional genetics and genomics of tropical grasses with abundant uses, including food, feed, and fuel, among others. It is currently the fifth most significant primary cereal crop. Crops are subjected to various biotic and abiotic stresses, which negatively impact on agricultural production. Developing high-yielding, disease-resistant, and climate-resilient cultivars can be achieved through marker-assisted breeding. Such selection has considerably reduced the time to market new crop varieties adapted to challenging conditions. In the recent years, extensive knowledge was gained about genetic markers. We are providing an overview of current advances in sorghum breeding initiatives, with a special focus on early breeders who may not be familiar with DNA markers. Advancements in molecular plant breeding,
genetics, genomics selection, and genome editing have contributed to a thorough understanding of DNA markers, provided various proofs of the genetic variety accessible in crop plants, and have substantially enhanced plant
breeding technologies. Marker-assisted selection has accelerated and precised the plant breeding process, empowering plant breeders all around the world
- …