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Tytuł:
Farm level analysis of pesticide use in sweet cherry (Prunus avium L.) growing in west mediterranean region of Turkey
Analiza poziomu użycia pestycydów w uprawie czereśni (Prunus avium L.) w zachodniośródziemnomorskim rejonie Turcji
Autorzy:
Yilmaz, H.
Powiązania:
https://bibliotekanauki.pl/articles/11543138.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Opis:
Pesticides are chemicals that are used to control and avoid fruit losses from pests and diseases in fruit production. Various kinds of pesticides have been used in sweet cherry growing to increase yield and farm income in Turkey. This study was conducted to analyze the farm-level of pesticide use in sweet cherry growing in West Mediterranean region of Turkey. Data was collected from 89 growers using the simple random sampling method. Results of this research show that the average usage of agricultural chemicals are 53 349.50 g per hectare as an active ingredient in the sweet cherry growing. The percentages of used agricultural chemicals are 79.82, 19.11 and 1.07% copper sulphates, pesticides and winter & mineral oils +DNOC, respectively. It was calculated that economic loss was €162.92 per hectare due to overdose of agricultural chemicals. Chi square test analysis showed that, there was a significant relationship between farmers' pesticide use practices and farm size, listening agriculture related program on radio, information needs in disease, insects and pests management, applying protective pesticides and use personal protecting equipment.
Pestycydy są związkami chemicznymi używanymi do zahamowania i unikania w plonie strat spowodowanych szkodnikami, chorobami i chwastami. W uprawie czereśni stosowano różnego rodzaju pestycydy w celu zwiększenia plonu i dochodu gospodarstw w Turcji. Niniejsze badanie przeprowadzono, aby przeanalizować poziom użycia pestycydów w zachodniośródziemnomorskim rejonie Turcji. Dane zebrano z 89 gospodarstw przy zastosowaniu prostej metody losowej. Na podstawie wyników badań wnioskuje się, że średnie użycie rolniczych środków chemicznych jako aktywnego elementu w uprawie czereśni wynosi 53 349,50 g·ha-1. Udział stosowanych chemicznych środków rolniczych to odpowiednio: 79,82, 19,11 i 1,07% siarczanu miedzi, pestycydów olei zimowych i mineralnych +DNOC. Obliczono, że strata ekonomiczna spowodowana przedawkowaniem rolniczych środków chemicznych wynosiła €162,92 ha-1. Analiza testu chi-kwadrat wykazała, że istnieje istotny związek między dawkami pestycydów stosowanymi przez rolników a rozmiarem gospodarstwa, słuchaniem w radiu programów związanych z rolnictwem, potrzebą posiadania informacji na temat chorób, zwalczaniem owadów i szkodników, zastosowaniem pestycydów oraz użyciem własnego sprzętu ochronnego
Źródło:
Acta Scientiarum Polonorum. Hortorum Cultus; 2015, 14, 3; 115-129
1644-0692
Pojawia się w:
Acta Scientiarum Polonorum. Hortorum Cultus
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis in terms of apple producers of government supported crop insurance policies as a risk management tool in Turkey
Analiza wspieranej przez rząd polityki ubezpieczeń plonów jabłek jako narzędzia kontroli ryzyka w Turcji z punktu widzenia producentów
Autorzy:
Yilmaz, H.
Powiązania:
https://bibliotekanauki.pl/articles/11542836.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Tematy:
apple
farm
producer
government
support
crop insurance
policy
risk management
Turkey
Opis:
Agricultural insurance is one of the possible measures to meet the risks that may occur because of the natural disasters and to ensure continuity of production in agricultural sector. This study was conducted to evaluating the results of government supported crop insurance (GSCIS) policies in terms of the apple producers and to determine characteristics of both farms participating and non-participating in government supported crop insurance system in the Isparta province of Turkey. The data used in the study was obtained from 77 apple producers by using a questionnaire. The farms were chosen by random sampling method and the data were analyzed by the chi-square test which was used to test relationship among variables. The result of the analyses showed that there is a significant difference between the farms participating and non-participating in GSCIS, considering social security status, farmer’s experience, membership of a cooperative, agricultural income level, non agricultural income status, agricultural advisory status, internet use, agricultural credit use, tractor ownership, farmers’ experience in apple production, shapes of apple orchards and varieties of apples grown. In conclusion it is suggested that effective service delivery by insurance service providers will ensure continuity of producers’ participation in agricultural insurance and also participation by producers who are yet to participate. Producers should be informed and be aware of the studies about government supported crop insurance.
Ubezpieczenie rolnicze to jeden z możliwych środków zarządzania ryzykiem, które może wystąpić z powodu katastrof naturalnych, oraz sposób zapewnienia ciągłości produkcji w sektorze rolniczym. Niniejsze badanie przeprowadzono w celu oceny wyników polityki ubezpieczeń plonów (GSCIS) z punktu widzenia producentów oraz w celu określenia cech zarówno gospodarstw uczestniczących, jak i nieuczestniczących w systemie ubezpieczeń plonów wspieranym przez rząd w prowincji Isparta w Turcji. Dane używane w badaniu uzyskano od 77 producentów jabłek za pomocą kwestionariusza. Farmy wybrano losową metodą próbek, natomiast dane przeanalizowano testem chikwadrat, który zastosowano w celu sprawdzenia relacji między zmiennymi. Wyniki analiz pokazały, że istnieje istotna różnica między gospodarstwami uczestniczącymi i nieuczestniczącymi w GSCIS jeśli chodzi o status bezpieczeństwa społecznego, doświadczenie rolnika, członkowstwo w spółdzielni, poziom dochodu rolnego, status dochodu nierolniczego, status doradztwa rolniczego, korzystanie z Internetu, korzystanie z kredytów rolniczych, posiadanie traktorów, doświadczenie rolników w produkcji jabłek, kształt sadów jabłoniowych oraz odmiany hodowanych jabłek. Wnioski sugerują, że efektywne usługi dostawców ubezpieczeń zapewnią ciągłość uczestnictwa producentów w ubezpieczeniach rolniczych, a także uczestnictwo producentów, którzy jeszcze nie są uczestnikami tych ubezpieczeń. Producenci winni posiadać informacje oraz świadomość dotyczącą badań nad wspieranymi przez rząd ubezpieczeniami plonów.
Źródło:
Acta Scientiarum Polonorum. Hortorum Cultus; 2014, 13, 5; 3-12
1644-0692
Pojawia się w:
Acta Scientiarum Polonorum. Hortorum Cultus
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An analysis on factors influencing government supported bumble bees use as pollinators by greenhouse producers in the Mediterranean coastal region of Turkey
Analiza czynników wpływających na wsparcie rządowe użycia trzmieli jako zapylaczy przez producentów warzyw szklarniowych w śródziemnomorskim rejonie Turcji
Autorzy:
Yilmaz, H.
Powiązania:
https://bibliotekanauki.pl/articles/11542853.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Tematy:
subsidy policy
government
support
bumble-bee
pollinator
greenhouse production
producer
Mediterranean area
coastal region
Turkey
Opis:
The main objective of this study was to determine the factors affecting the government supported bumble bees use as pollinators by greenhouse producers in the Mediterranean Coastal Region of Turkey. The data used in this study were collected from growers by using a face to face survey. To this end, data was obtained by using simple random sampling method in 80 greenhouse farms in Antalya province. The data were analyzed with the chi-square test which was used to test relationship between variables. The result of the analyses showed that there is a significant relationship between the farms using and non-using bumble bee, considering status registered for greenhouse of farmer, type of growing, type of greenhouse ventilation and the number of people working in greenhouse. Furthermore, the most of farmers believed that use of bumble bees as pollinators in greenhouse tomato production is beneficial. These benefits include the effect of environment and human health and also the economic (marketing, higher price, higher yield, reducing pesticide use and labor use).
Głównym celem niniejszego badania było określenie czynników wpływających na wspierane rządowo użycie trzmieli jako zapylaczy w szklarniach śródziemnomorskich rejonów Turcji. Dane zostały zebrane od rolników przy użyciu bezpośredniej ankiety, a uzyskano je za pomocą metody losowej z 80 gospodarstw ze szklarniami w prowincji Antalya. Dane przeanalizowano za pomocą testu chi kwadrat, którego użyto w celu sprawdzenia związków między zmiennymi. Z analiz wynika, że istnieje istotny związek między gospodarstwami używającymi i nieużywającymi trzmieli, wziąwszy pod uwagę status zarejestrowanego rolnika, typ uprawy, typ wentylacji w szklarni oraz liczbę osób pracujących w szklarni. Ponadto większość rolników uważa, że użycie trzmieli jako zapylaczy w szklarniowej produkcji pomidora jest korzystne. Korzyści dotyczą wpływu na środowisko, zdrowie człowieka, a także kwestii ekonomicznych (marketing, wyższa cena, większy plon, mniejsze użycie pestycydów oraz siły roboczej).
Źródło:
Acta Scientiarum Polonorum. Hortorum Cultus; 2014, 13, 6; 59-70
1644-0692
Pojawia się w:
Acta Scientiarum Polonorum. Hortorum Cultus
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation of Marine Pollution Caused by Ship Operations with DEMATEL Method
Autorzy:
Özdemir, Ü
Yılmaz, H.
Başar, E.
Powiązania:
https://bibliotekanauki.pl/articles/117112.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
marine pollution
decision-making trial and evaluation laboratory (DEMATEL)
DEMATEL method
ship operation
environment protection
environmental science
multiple criteria decision-making (MCDM)
ecology
Opis:
Ships have an important role in among the factors causing marine pollution. Marine pollution by ships damages sea life, which effects human health indirectly, in addition it restricts usage of sea for different purposes. Increasing comprehensive and compelling liabilities related with environmental components and subjects day by day are expected results for environmental science and engineering applications according to 60% of our responsibilities of European Union Integration development. In today’s’ world, where global warming is an issue of high priority and makes us feel its impacts in our lives, leaving a livable world to the next generations is now a primary goal for all. Determination of marine pollution caused by ship operations issue is a multiple criteria decision-making (MCDM) problem, and requires MCDM methods to solve it. Therefore, the role of ship factor in maritime pollution and the possible reasons of this argument can be quantitatively evaluated based on expert knowledge and MCDM methodology. To investigate what makes to reduce the first “caused by ship operations " in marine pollution, the decision-making trial and evaluation laboratory (DEMATEL) method approach was applied in this study.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2016, 10, 2; 315-320
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Turkish Women Seafarers and A Quastionnaire Study on Employment Situation
Autorzy:
Yilmaz, H.
Basar, E.
Ozdemir, U.
Powiązania:
https://bibliotekanauki.pl/articles/117539.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
Turkish Women Seafarers
employment situation
crew resource management
seafarers
Turkish
maritime profession
women seafarers
female seafarers
gender
Turkish shipping companies
ships crew
Opis:
Throughout history, women have struggled to gain a place and establish their presence in social life. Mostly, they have continued their life in the position of carrying out family responsibilities. When women want to get involved in the business world, they are facing some problems arising from dogmatic thinking and prejudices, especially among the professions with "male-dominated" judiciary. Maritime profession, one of the oldest professions in the world, was also regarded as a single-gender area until the 20th century. However, in recent years, economical and political changes in the world, equal opportunity in education and incentive works of the International Maritime Organization have led women to work as seafarers. Although female seafarers constitute 2% of the world seafarers, this ratio is higher in developed countries than that of undeveloped or developing countries (URL-1). There is very little information regarding women seafarers in general, including the actual population size. Most of studies focus on passenger ships or cruise ships, not cargo ships (Sohyun, 2010). It is difficult to find relevant studies regarding women seafarers in the world, including in Turkey. In Turkey, women have played an active role and gained an apparent identity in the maritime sector since the 2000s. According to 2015 data, Turkey is ranks the 14th in the world maritime trade with more than 27,6 million deadweight tonnage and manages 1530 vessels (UNCTAD, 2015). In Turkey, many studies related to the employment of seafarers are carried out as in the whole world. However, studies on the employment of women seafarers should be paid more attention. In this study, a questionnaire was carried out with the personnel department managers in Turkish shipping companies. Employment, career, educational status of female seafarers and the general difficulties they face were revealed.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2016, 10, 2; 353-360
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation of Watchkeeping Officers Watches Under The Working Hours Ineligible to STCW Regulation
Autorzy:
Yılmaz, H.
Başarir, E.
Yüksekyıldız, E.
Powiązania:
https://bibliotekanauki.pl/articles/116498.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
Ship Watchkeeping
STCW Convention
Working Hours
Officer of the Watch (OOW)
Full Mission Bridge Simulator (FMBS)
Watchkeeping Officer
Liquid Cargo Handling
Resting Periods
Opis:
In parallel with the increase in the volume of world trade, cargo handling rates and seafarers' pace of work has increased. Although the STCW regulations and restrictions on working hours has improved, this tempo has brought with it insufficient resting hours, especially in short sea transport. It is known that individuals under stress and intensive workloads are more prone to making mistakes due to fatigue. In this study, the officers’ working hours are simulated in full-mission simulator at short sea transport to investigate errors made during the navigation and port watches. For this purpose, the data were obtained from 7 volunteers watchkeeping officers with the help of video monitoring and check lists in the full-bridge simulator system and also, system records in cargo handling simulator. With this study, introduced what types of errors made during navigation and port watches by watchkeeping officers under the intense pace of work. And the errors are evaluated under the legislation of international maritime. As a result, to comply with the limitations of working hours, it is necessary to increase the number of officers responsible for operations on short sea transport.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2013, 7, 4; 493-500
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation of the Changes in Perceived Sleep Quality and Quantity among Maritime Students in Relation to Long Term Sea Training
Autorzy:
Yılmaz, H.
Başar, E.
Ayar, A.
Powiązania:
https://bibliotekanauki.pl/articles/117450.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
seafarers problems
perceived sleep quality
perceived sleep quantity
maritime students
lon term sea training
sea training
Pittsburg Sleep Quality Index (PSQI)
MET system in Turkey
Opis:
Maritime students spend a certain period of their training on board, depending on their qualifications. Deck officer candidates (deck cadets) must perform an open sea internship on commercial vessels for one year. Deck officers are among to member of crew with important responsibilities to cooperate with the Master during voyage including being involved in navigation and port watches as well as maintenance of the ship and its safety equipment. Deck cadets perform their practical training between academic education periods according to general practice in Turkey. They can be subjected to unusual working hours and rest periods during the mission on the ship. Considering the importance of adequate sleep for productivity, vigilance, sustaining attention and even over-all health and well-being, it is not only sleep quantity but sleep quality is critical. The aim of this study was to investigate of the effect of the long-term onboard training (aprox. 7 months) on the sleep quantity and quality of the maritime students. Data regarding sleep quantity and perceptive quality among the subjects were obtained by using Pittsburg Sleep Quality Index (PSQI). PSQI is a scale providing information on type and violence of sleep disorders and the quality of sleep during the past month. A total of 60 maritime students were asked to fill PSQI before and after onboard training. Demographical information such as age, gender, weight, height and information regarding the internship were also obtained. Of the students 43.3% rated as poor sleeper before the internship and this ratio increased to 73.3% after the internship. A prominent decrease in sleep quality was determined. Sleep duration did not change significantly. This study showed a significant negative effect of onboard training on sleep quality among participants and they did not recover within a month after returning from the sea which indicates potential long term consequencies.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2018, 12, 2; 291-298
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of poly(2-hydroxyethyl~methacrylate)-co- poly(4-vinyl pyridine) copolymers [COP2,4] irradiated: an EPR study
Autorzy:
Ceylan, Y.
Yumurtaci Aydogmus, H.
Usta, K.
Usta, A.
Ceylan, N.
Yilmaz, H.
Powiązania:
https://bibliotekanauki.pl/articles/1070218.pdf
Data publikacji:
2016-07
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
87.66.Uv
36.20.Kd
39.30.+w
33.35.+r
Opis:
Poly(2-hydroxyethyl methacrylate)-co-poly(4-vinyl pyridine) and poly(HEMA)-co-poly-(4-VP) copolymers were synthesized by free radical polymerization. K₂S₂O₈ was used as an initiator. Chain lengths of the copolymer was changed by varying the monomer/initiator ratio. These polymers have molarites of 2.6 and 2.1 respectively and are called COP2 and COP4. The samples were exposed to gamma rays at room temperature. After irradiation, the EPR spectra of COP2 and COP4 were recorded between 120 K and 450 K. From the temperature dependence of the line intensity, it was concluded that unpaired spin concentration in the irradiated samples has been changing with temperature. A theoretical study, presented in this report, was aimed to test success of the machine learning methods and to select the best learning method.
Źródło:
Acta Physica Polonica A; 2016, 130, 1; 167-171
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Engineering-geological and geotechnical investigations for risk assessment of the University Olympic Village in Izmir (Turkey)
Autorzy:
Kıncal, Cem
Koca, Mehmet Yalçın
Yılmaz, H. Recep
Akgün, Mustafa
Özyalın, Şenol
Eskişar, Tuğba
Akçığ, Zafer
Loon, A. J. (Tom)
Powiązania:
https://bibliotekanauki.pl/articles/94556.pdf
Data publikacji:
2010
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
engineering geology
hazard maps
bearing capacity
Izmir
Turkey
geologia inżynierska
mapy zagrożenia
nośność statyczna
Turcja
Opis:
The Metropolitan Municipality of Izmir (Turkey) designated a steeply inclined area for the construction of buildings to house the participants of the Izmir University Olympic Games. Before the construction activities could start, engineering geological and geotechnical investigations had to be carried out in order to establish which zones in the area were suitable for safe constructions. Seismic studies, borings and laboratory tests yielded the data, which were used for preparing five hazard maps in a GIS environment. The construction activities based on the results of this complex investigation appeared successful. The engineering geological investigations included geotechnical measurements on core samples obtained from the boreholes (core drilling) and laboratory testing. The rock-quality designation (RQD%) values of the rock units were determined and used in the rock-mass classification (rock-mass rating method) as an in-put parameter and in the calculation of the bearing capacity of the various rock units. Geophysical surveys were carried out to determine the seismic velocity of the rocks at the site. A short overview is provided of the main problems that had to be dealt with, and of the successive steps taken to solve the engineering-geological problems. Determination of these problems is necessary for adequate land-use planning and construction activities.
Źródło:
Geologos; 2010, 16, 1; 43-57
1426-8981
2080-6574
Pojawia się w:
Geologos
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Maturation of Oriental beechnuts (Fagus orientalis)
Autorzy:
Yilmaz, M
Dirik, H.
Powiązania:
https://bibliotekanauki.pl/articles/41227.pdf
Data publikacji:
2008
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
Oriental beech
Fagus orientalis
beechnut
maturation
seed
tree
Opis:
In this study, both the morphological maturation and germination ability of the Oriental beechnut were investigated two months prior to seed dispersal to find out the appropriate period of ripened beechnut collection. Beechnuts were collected in the seed stand, Dokurcun-Adapazari, on August 21, September 9, and September 25 on trees, and on October 16, 2003, from the ground after the major seed fall. Germination percentages were 18.0%, 80.5%, 92.0%, and 94.7% on August 21, September 9, September 25, and October 16, respectively. Similarly, both beechnut weight and the embryo:beechnut weight ratio significantly increased with time and reached an approximate maximum level at September 25, 2–3 weeks prior to seed dispersal. This outcome indicates that ripened beechnuts can be collected from the trees, 15–20 days prior to major seed dispersal. The study also indicates that ripened Oriental beechnuts have physiological dormancy and need about 8–10 weeks chilling at 3°C for germination.
Źródło:
Dendrobiology; 2008, 60; 57-62
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Freezing in Halide Salts
Autorzy:
Akdere, Ű.
Yilmaz, M.
Kavanoz, H.
Taşseven, Ç.
Powiązania:
https://bibliotekanauki.pl/articles/1812355.pdf
Data publikacji:
2008-06
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
61.20.-p
64.70.D-
Opis:
The static criterion that the amplitude of the principal peak of the liquid structure factor has a constant value along the freezing line and the onset of freezing are studied from the structure factors and the static dielectric functions of halide salts interacting via the effective pair potentials through the hypernetted-chain approximation. It is observed that the criterion above is restricted to the effective charge difference. The critical value of plasma parameter at freezing is affected by the mobility and number concentration of anions and cations. The distribution of the value of the static dielectric function closest to the wave number axis in the negative region is also determined by the charge difference and the ordering of ions and related to the onset of freezing.
Źródło:
Acta Physica Polonica A; 2008, 113, 6; 1659-1670
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Soil Stabilization with Using Waste Materials against Freezing Thawing Effect
Autorzy:
Yilmaz, F.
Kamiloğlu, H.
Şadoğlu, E.
Powiązania:
https://bibliotekanauki.pl/articles/1402431.pdf
Data publikacji:
2015-08
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
89.60.Kk
89.60.-k
Opis:
Freezing-thawing processes hapenning in seasonally cold climate cause deformation of soil in time of freezing and strength loss while thawing. Problems of ground frost heave and soil softening belong to the important factors, that could cause serious damage and financial loss. Bayburt tuff and tuffites known as Bayburt Stone mines, located around Bayburt, play important role on economy of the Bayburt city. As a result of researches in 2005 total of 2 535 700 tons proved reserve were determined several places in Bayburt. The goal of this study is proving, that deposits of Green Bayburt Stone wastes, created in the stone quarries during the stone processing, can be used as a stabilizing material. By recycling the waste material rejected stone was mixed with lime and used as a soil stabilizator against freezing-thawing effect. Prepared natural and stabilized soil samples were subjected to freezing-thawing cycles after curing for 28 days. After the freezing-thawing cycles, compressive strength of the samples was measured to investigate the influence of the additives on the freezing-thawing properties of soil samples. As a result of this study, it was determined that samples stabilized with Green Bayburt Stone mixtures have high freezing-thawing durability as compared to unstabilized samples. As a consequence, it was seen that those mixtures can be successfully used as an additive material to enhance the freezing-thawing effects of cohessive soils.
Źródło:
Acta Physica Polonica A; 2015, 128, 2B; B-392-B-394
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Seed characteristics of Amygdalus arabica in Adıyaman region of Turkey
Autorzy:
Yilmaz, M.
Kalkan, M.
Demirbağ, H.
Powiązania:
https://bibliotekanauki.pl/articles/2078191.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
mountain almond tree
hot-arid areas
seed germination
prechilling
dormancy
Opis:
Mountain almond (Amygdalus arabica) is a shrub with naturally distributing in Turkey, Iran, Iraq, Syria, Jordan and Saudi Arabia. A. arabica also known as bitter almond and can reach up to 2.5 m. The natural distribution of mountain almond is generally in the Southeast Region of Turkey. The present study carried out to determine the morphological and physiological characteristics of the seed of mountain almond. The seeds were collected from three different populations of A. arabica in Adıyaman. For different each populations seed weight, height, width, thickness, and 1000-seed weight were measured in the laboratory. Morphological characteristics of A. arabica seeds varied according to their populations. Seed germination tests were conducted at 20 °C, after prechilling for 0, 3, 6, and 9 weeks at 4 °C. Prechilling treatments of 3 weeks were insufficient, but 6 and 9 weeks of prechilling were found to eliminate seed dormancy and led to the highest germination percentage. The average germination percentage after 0, 3, 6, and 9 weeks of prechilling were 3.1%, 49.6%, 80.4%, and 81.1%, respectively. The average mean germination time was approximately between 8 and 10 days.
Źródło:
Dendrobiology; 2020, 84; 49-57
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Quantitative Characteristic X-Ray Analysis for Different Compound Samples by Using Monte Carlo Method
Autorzy:
Tekın, H.
Altunsoy, E.
Manici, T.
Yilmaz, B.
Powiązania:
https://bibliotekanauki.pl/articles/1030113.pdf
Data publikacji:
2017-09
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
Monte Carlo
characteristic X-ray
brass
Opis:
X-ray spectrometry is an elemental analysis technique with broad application in science and industry. It is based on the principle that individual atoms, when excited by an external energy source emit X-ray photons of a characteristic energy or wavelength. Here we obtained the characteristic X-ray peaks of different brass compounds and compared the intensity of characteristic peaks by changing with Zn rate. In this study we modelled different brass samples by using Monte Carlo method and changed the zinc rate in brass samples for each compound. We obtained the characteristic X-ray peaks of different compounds and compared the intensity of characteristic peaks by changing with Zn rate. We achieved a good agreement between peak intensity and corresponding element rate in compound. Also we obtained that characteristic peak rate increases by corresponding element rate in compound. This study shows that Monte Carlo method is very effective method to simulate material features due to their characteristic peaks and their intensities.
Źródło:
Acta Physica Polonica A; 2017, 132, 3; 439-441
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Boride Layer Growth Kinetics of AISI H13 Steel Borided with Nano-Sized Powders
Autorzy:
Karakaş, M. S.
Günen, A.
Kanca, E.
Yilmaz, E.
Powiązania:
https://bibliotekanauki.pl/articles/351842.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
boriding
growth kinetics
activation energy
Opis:
Growth kinetics of boride layers in AISI H13 steel was investigated using the pack boriding method at temperatures of 1073, 1173 and 1273 K (800°C, 900°C and 1000°C) for periods of 2, 4 and 6 h with nano-sized boron (NB) and micron-sized Ekabor II powders as boriding agents. The total thickness of the boride layer (including both FeB and Fe2B) after boriding at 1273 K (1000°C) for 6 h was 103.8 μm and 96.5 μm for the NB and Ekabor II specimens, respectively. X-ray diffraction analysis of the boride layers on the surfaces borided with NB and Ekabor II revealed the presence of FeB and Fe2B phases with sawtooth morphology. The FeB/Fe2B volume ratio was higher in the specimens borided with NB. The thickness of the boride layer (FeB + Fe2B) increased with the increasing boriding temperature and time. The FeB layer in the NB specimen displayed a (002) preferred orientation.
Źródło:
Archives of Metallurgy and Materials; 2018, 63, 1; 159-165
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 33

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