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Koleksiyondaki öğeler
- MakaleAçık Erişim2014Scopus SJRQ1Effect of Swirl Generator Inserted Into a Tube on Exergy Transfer: Decaying Flow
Kurtbas, I.; Guelcimen, F.; Kiliçarslan, A.; Kaya, M.
This study experimentally investigates the effect of conical injector type swirl generator inserts on heat and exergy transfer in a uniform heat flux tube for turbulence regime. One hundred twenty watts of heat are applied by coiling a flexible silicone heater on the tube (copper pipe) with an inside diameter of 62mm and length of 1,200mm. The conical injector type swirl generator has a conical shape, which is similar to a funnel, with angle (alpha) of 30 degrees, 45 degrees, and 60 degrees. Circular holes are drilled on the conical injector type swirl generator as three different cross-sectional areas (A(h)). The total areas (A(t) =N.A(h)) of the holes on the conical injector type swirl generator equal each other. Because of this, the three different holes numbers (N) are produced. Flow directors having three different angles (beta=30 degrees, 60 degrees, and 90 degrees) to radial direction are attached to every one of the holes. This study is a typical example for decaying flow. Reynolds number (Re) was varied from 10,000 to 35,000, so the flow was considered as only a turbulent regime. All experiments were conducted with air accordingly; Prandtl number was approximately fixed at 0.71. The local and average heat transfer Nusselt number (Nu(h)) and exergy transfer Nusselt number (Nu(e)) are calculated and discussed in this article. It is found that the Nu(h) increases with an increase in Reynolds number, director angle (beta), and director diameter (d) but with a decrease in the conical injector type swirl generator angle (alpha). However, Nu(e) decreases depending on the same independent parameters.
AtıfWoS12OpenAlex13
İncele - MakaleAçık Erişim2015Scopus SJRQ2Rutin attenuates gentamicin-induced renal damage by reducing oxidative stress, inflammation, apoptosis, and autophagy in rats
Kandemir, Fatih Mehmet; Ozkaraca, Mustafa; Yildirim, Betul Apaydin; Hanedan, Basak; Kirbas, Akin; Kilic, Kubra; Aktas, Esra; Benzer, Fulya
Gentamicin is commonly used against gram-negative microorganisms. Its therapeutic use is mainly limited by nephrotoxicity. This study was aimed at evaluating the effect of rutin on oxidative stress, inflammation, apoptosis, and autophagy in gentamicin-induced nephrotoxicity in rats. The rats were treated with saline intraperitoneally (group I), 150 mg/kg of rutin orally (group II), 80 mg/kg of gentamicin intraperitoneally for 8 d (group III), or 150 mg/kg of rutin plus 80 mg/kg of gentamicin (group IV). The serum urea, creatinine, kidney malondialdehyde (MDA), and reduced glutathione (GSH) levels and superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GPx) activity and protein concentration were measured, and renal histopathology analysis and immunohistochemical staining were performed. Rutin pretreatment attenuated nephrotoxicity induced by gentamicin by reducing the urea, creatinine, and MDA levels and increasing the SOD, CAT, and GPx activity, and the GSH levels. The rutin also inhibited inducible nitric oxide synthase (iNOS), cleaved caspase-3 and light chain 3B (LC3B), as evidenced by immunohistochemical staining. The present study demonstrates that rutin exhibits antioxidant, anti-inflammatory, anti-apoptotic, and anti-autophagic effects and that it attenuates gentamicin-induced nephrotoxicity in rats.
AtıfWoS107OpenAlex123
İncele - MakaleAçık Erişim2019Evaluation of Middle School Mathematics Course Curriculums from 2005 to 2018
Ilhan, Aziz; Aslaner, Recep
In this research, secondary mathematics teaching programs published by the Ministry of National Education (MoNE) Education and Training Board (TB) from 2005 to 2018 (2005, 2006, 2009, 2013, 2015, 2017 and 2018), content (learning areas), vision, approach, philosophy, achievements, skills and implementation steps of the program. For this reason, it is preferred to use a qualitative analysis method for document review. Working in this method direction; the research was carried out in six steps: identifying research problems, collecting data, evaluating data, analyzing findings, evaluating the knowledge gained from the research topic, and making proposals. The data were analyzed with the coding key prepared from 2005 to 2018 to allow comparison of the seven secondary mathematics teaching programs published by MoNE TB. As a result of the research findings, mathematics curriculum developed from 2005 to 2009 it has been determined that the number of objectives are generally reduced, simplified and clarified, some arrangements have been made in the learning areas and the number of competencies and skills to be gained have been increased. In addition, the achievements in the curriculum have been reduced by simplifying, consolidating, or updating the curriculum and the length of the courses has been increased by a factor of four at the emphasis on mathematics. It is suggested that researchers who want to study in this area should conduct new research which analyzes in detail the between objectives, learning areas, targeted competencies and skills, achievements and the relationships class hours.
AtıfWoS2OpenAlex22TR Dizin12
İncele - MakaleYalnız künye2014Scopus SJRQ1Ecological risk assessment of heavy metals in surface sediments of northern littoral zone of Lake Cildir, Ardahan, Turkey
Kükrer, Serkan; Seker, Sebahat; Abaci, Z. Tugba; Kutlu, Banu
In this paper, the heavy metal levels (Cu, Pb, Zn, Ni, Mn, Fe, As, Cd, Cr, Hg), organic carbon, and chlorophyll degradation products were studied to prove their ecological effects in Lake CA +/- ldA +/- r, where fossil fuels are used as an energy source in the studied area for most of the year, and domestic waste from settlements is discharged directly into the lake. Sediment samples were collected from six sites on the northern shore of CA +/- ldA +/- r Lake, Turkey in November 2012. Enrichment (EF) and contamination factor (CF) values were determined, and Pollution Load (PLI) and Potential Ecological Risk (PER) indices were calculated. Average concentrations of heavy metals in the sediments were, in descending order, Fe > Mn > Zn > Ni > Cr > Cu > Pb > As > Cd > Hg, respectively. According to mean values, the source of these elements may be considered natural due to lack of enrichment in Cu, Pb, Zn, Ni, and Cr in the sediment samples. Regarding enrichment of As, Cd, Mn, and Hg, the highest EF belongs to Hg. PLI and PER values indicate there are moderate ecological risk in the lake.
AtıfWoS97OpenAlex102İncele - MakaleAçık Erişim2026Mapping the Evolution of Interior Architecture and Interior Design: A VOSviewer-Based Bibliometric Analysis
Ay, Ilhami; Dal, Murat; Bekler, Sema; Bekler, Baris
This study conducts a comprehensive bibliometric analysis to explore the academic evolution of interior architecture and interior design literature from 1975 to 2024 using the Web of Science (WoS) database. A total of 3,695 articles were analyzed through VOSviewer software to visualize and interpret research trends, citation networks, co-authorship clusters, and thematic keyword occurrences. The findings indicate a steady growth in publications, particularly after 2006, coinciding with the increasing emphasis on digitalization and sustainability in design. Prominent research themes include biophilic design, adaptive reuse, and the psychological effects of color and space. The dominance of English-language publications is evident, though contributions in Turkish, French, and Spanish are also recognized. Citation analyses identify influential studies that link technical developments with social and psychological perspectives in design. Thematic clustering highlights the interdisciplinary expansion of the field, integrating insights from environmental psychology, ergonomics, and emerging digital technologies such as virtual and augmented reality. This study contributes to the literature by offering a clear roadmap for future research, promoting international collaboration, and strengthening the link between academic inquiry and design practice.
- MakaleYalnız künye2010Scopus SJRQ3Effect of Potassium Sorbate on Some Microbiological Properties of Cokelek Stored at Different Temperatures
Öksüztepe, Gulsum; Ilhak, O. Irfan; Dikici, Abdullah; Çalicioglu, Mehmet; Patir, Bahri
In this study, the effect of potassium sorbate at 0.01%, 0.05% and 0.1% on the some microbiological (total aerobic mesophilic bacteria-IAMB, coliform bacteria, Lactobacillus-Leuconostoc-Pediococcus, Stapylococcus-Micrococcus. enterococcus and yeast-mold) and chemical (pH, acidity) properties of cokelek stored at 4 +/- 1 degrees C or 22 +/- 1 degrees C was investigated. It was seen that adding potassium sorbate at 0.01%, 0.05% and 0.1% to cokelek did not have an effect on numbers of TAMB, coliform bacteria, lactobacillus- leuconostoc- pediococcus, staphylococcus-micrococcus in cokelek stored at both 4 +/- 1 degrees C and 22 +/- 1 degrees C (P>0.05). However, adding potassium sorbate at 0.05% and 0.1% to cokelek had an effect on numbers of enterococci and yeast-mold in cokelek stored at 4 +/- 1 degrees C (P<0.05). It was also not observed significant difference in pH and acidity levels between control group and treatment groups containing potassium sorbate during storage period (P>0.05).
AtıfWoS5İncele - MakaleYalnız künye2014Scopus SJRQ3Age Determination of Red-Spotted Trout (Salmo macrostigma) Inhabiting Munzur Stream, Turkey
Basusta, Asiye; Basusta, Nuri; Aydin, Rahmi; Ozer, Ebru I.; Girgin, Hulya
The goal of this study was to determine the best bone structure for age determination in Salmo macrostigma. During the study, comparative age determinations were performed on a total of 243 fish samples by using the operculum, suboperculum, preoperculum, interoperculum and vertebrae bony structures. In comparing the ages of five bony structures, the least agreement was 90.79% at the ages of the interoperculum-vertebrae and preoperculum-interoperculum. The most agreement was 99.59% at the ages of operculum-suboperculum. The biggest age difference amongst bony structures was 2. The clearest age ring was observed on the operculum and suboperculum bones.
AtıfWoS1İncele - BildiriYalnız künye2015Harmonic Analysis in Power Systems With Discrete Fourier Transform
Akmaz, Duzgun; Mamis, Mehmet Salih
Harmonics has become more significant issue due to the increasing of utilization of the non-linear loads and switching elements such as inverter on the power system recently. Harmonics disrupts the shape of the current and voltage signals in power systems and leads to many problems in power systems. It has made harmonic analysis necessary on the power system. Harmonics has become more significant issue due to the increasing of utilization of the non-linear loads and switching elements such as inverter on the power system recently. In this study a method is designed to obtain a basic signal by using Discrete Fourier Transform (DFT) in order to determine harmonics on power systems. The simulation of this method has been implemented by using Matlab/Simulink software package.
AtıfWoS2İncele - MakaleYalnız künye2019Scopus SJRQ4CHARACTERIZATION OF ERBIUM OXIDE NANOPARTICLES
Ates, Mehmet; Kar, Bulent; Bogatu, Coneliu
Considering the advantages of nanoscale materials such as being lighter, more robust, programmable materials, less material usage, less energy requirement during production phase, and no longer producing materials, it is important to produce nanomaterials and determine their properties. Therefore, the characterization of nanomaterials has become one of the pillars of material science. An important aspect of nanoscale material science is the method of characterization of materials that we use or study to learn more about them. In recent years, great importance has been given to rare earth materials with nanostructures. One of the rare earth elements is Erbium and it is one of the newly discovered materials that is used in high technology. Erbium oxide (Er2O3) nanoparticles (NPs) are used in electronic devices. It is used in capacitors, metal oxide semiconductor transistors, and as dopants for optical fiber and laser materials. In this study, Erbium based Er2O3 NPs were characterized. The characterization of Er2O3 was realized using X-ray diffraction (XRD), scanning electron microscopy (SEM), the energy dispersive X-ray (EDX), and Fourier transform infrared spectroscopy (FT-IR). The number of specific peaks and their position fit very well with those from standard XRD spectrum and revealed pure Er2O3 nano oxide. SEM analysis of these particles showed their spherical shapes that are in great extent uniform distributed with nano sizes ranged between 40-60 nm.
- MakaleAçık Erişim2022Demirkopru Baraj Golu'nde ?lk Viviparus contectus (Millet, 1813) Kayd? ve Baz? Biyometrik Parametrelerinin De?erlendirilmesi
Kocabas, Filiz K. U. T. L. U. Y. E. R.; Kocabas, Mehmet
The aim of this study is to investigate some biometric characteristics of Viviparus contectus (Millet, 1813) in Demirkopru Dam Lake, Manisa province. Measurements of 180 individuals collected in the study area were performed using calipers and precision balances, and weight (g), width (mm), height (mm), aperture length and width (mm), spiral height (mm), body whorl height data were obtained. It was determined as 20.23 +/- 5.16 mm for shell height, 16.11 +/- 3.33 mm for shell width, 11.93 +/- 2.39 mm for aperture height, 9.71 +/- 2.11 mm for aperture width, 15.71 +/- 3.87 mm for body spiral height, 4.49 +/- 1.73 mm for spiral height and 4.50 +/- 0.93 g for weight. According to principal components analysis, there is a strong relationship between Shell height (KH), Shell width (KW), Aperture height (AH) and Body helezone height (VHS).V. contectus species has been reported for the first time from the region with this study.
AtıfWoS3OpenAlex2TR Dizin1İncele - MakaleAçık Erişim2025Earthquake Hazard in Urban Areas of Bursa Province: Paleosismological Properties of the Ulubat, Bursa and İnegöl Active Faults
Karabacak, Volkan; Sançar, Taylan
This study provides a detailed mapping of active fault segments in Bursa and its surrounding regions, along with a comprehensive analysis of seismic behavior derived from paleoseismological data. As one of T & uuml;rkiyes' strategic economic centers with a dense population and industrial infrastructure, Bursa requires a holistic seismic risk assessment for effective disaster preparedness and mitigation. Paleoseismological analyses of the eastern segment of the Ulubat Fault indicate that it has been in a seismic quiescence period for approximately 1855 years. This prolonged period of inactivity highlights the potential for a large earthquake in the future around the Nil & uuml;fer Region of Bursa. Trench investigations conducted in Bursa city-centre reveal that the Bursa Fault has produced at least six surface ruptures over the past 12000 years, recurring approximately every 2000 years. Additionally, trench studies on the & Idot;neg & ouml;l Fault indicate that the & Idot;neg & ouml;l Fault has produced at least five surface ruptures over the last 12000 years, with the most recent major earthquake occurring more than 2500 years ago. Obtained results emphasize the potential for the Bursa and & Idot;neg & ouml;l faults to rupture simultaneously or in close succession, possibly triggering one another. Thus, the surface rupture caused by the 1855 Bursa earthquake is evaluated to have potentially triggered stress accumulation along the & Idot;neg & ouml;l Fault. This situation reveals a high probability of a surface-rupturing earthquake (M=6.2-6.9) occurring at any time on the & Idot;neg & ouml;l Fault, after 2500 years of seismic silence. Overall, these findings underscore the critical role of the faults in Bursa and its surroundings within the regional seismicity. In particular, the potential for sequential ruptures along the Bursa and & Idot;neg & ouml;l faults presents a significant earthquake hazard. This comprehensive analysis contributes to a deeper understanding of the seismotectonic dynamics of the region, providing valuable insights for seismic hazard assessment and risk mitigation efforts.
AtıfWoS2OpenAlex3İncele - MakaleYalnız künye2010Scopus SJRQ3Presence of E. coli O157:H7 in Cakes Marketed in Elazig
Öksüztepe, Gulsum; Patir, Bahri; Çalicioglu, Mehmet; Ilhak, O. Irgan; Dikici, Abdullah
The present study was undertaken to investigate the presence of Escherichia coli O157:H7 in cakes (plain, with cacao, with fruit) marketed in Elazig. A total of 200 cake samples as 100 plain, 50 with cacao, and 50 with fruit were analysed. Following the enrichment, the samples were plated on to CT-SMAC agar. A total of 208 typical colonies (colourless) as 138 colonies from 65 plain cakes, 25 colonies from 8 cakes with cacao, and 45 colonies from 19 cakes with fruit were isolated. These colonies were subjected to further analysis given in the materials and methods section for identification of serotype O157:H7 of E. coli. However, no colonies representing E. coli O157 were detected in any of the samples. Therefore, analysis was not proceeded for determining H7 in any of the isolates. E. coli O157:H7 was not detected in any of the cake samples analyzed. Although this finding is a good news for public health, considering other pathogens, which may exist in cakes, it is concluded and reemphasized that strict hygienic practices should be applied at every stage of cake production.
AtıfWoS2İncele - MakaleYalnız künye2011Scopus SJRQ2THE EFFECT OF ATTACK ANGLE TO VORTEX SHEDDING PHENOMENON OF FLOW AROUND A SQUARE PRISM WITH A FLOW CONTROL ROD
Akansu, Yahya Erkan; Özmert, Mehmet; Firat, Erhan
In this study, the effect of attack angle on vortex shedding phenomena in the case of flow around the square prism as a bluff body and the circular rod which used as flow control component was experimentally investigated. While the value of attack angle equal to 0 degrees, the upstream control rod and square prism are in tandem arrangement to free stream. Experiments were conducted at Reynolds number of 1.0 x 10(4), for the diameter ratio of d/D=0.25, the attack angle between 0 degrees <= alpha <= 90 degrees, and the value of normalized distance between two prism LID is 1, 2, 3, and 4. The velocity measurements were conducted by means of constant temperature anemometer (CTA) as well as vortex shedding frequencies obtained by the spectral analysis of velocity-time history. Characteristics of the vortex formation region and location of flow attachments, reattachments, and separations were observed by means of the smoke-wire flow visualizations. At the angle of attack 0 degrees of the location L/D=2 and 3, the flow structure that possess high vorex shedding frequency which causes remarkable reductions on the drag force and significant increase in the heat transfer was obtained. This flow structure continous to decrease with increasing attack angle up to around 10 degrees. By further increasing of attack angle, the effect of flow control rod on vortex shedding frequency disappears completely.
AtıfWoS6İncele - Kitap BölümüYalnız künye2019Immigration Rhetoric of Political Leaders in Turkey FROM GUEST METAPHOR TO EMPHASIS ON NATIONAL INTEREST
Tastan, Inan Ozdemir; Kenes, Hatice Coban
AtıfWoS3İncele - MakaleYalnız künye2019Scopus SJRQ3Bio-functions of carvacrol-supplemented feeds on lipopolysaccharide-induced rainbow trout (Oncorhynchus mykiss Walbaum, 1792)
Kucukgul, A.; Gulsafak, I
To investigate the effects of carvacrol supplementation in rainbow trout induced by lipopolysaccharide (LPS), relative gene expressions levels of some pro-inflammatory cytokines and apoptosis markers in kidney and liver were measured. Fish with a mean weight of 44.71 +/- 1.33 g were studied using four different treatments with three replicates each. Inflammation and apoptosis were performed using LPS of Escherichia coli (25 mu g ml(-1)) except in the control group and only carvacrol (100 mu g ml(-1) diet) containing diets were fed to this group (CAR). The last group was the infected fish fed carvacrol supplemented diet (+CAR). Kidney and liver tissues were removed 3 days after to determine the levels of interleukin-1 beta (IL-1 beta), interferon gamma (INF-gamma), caspase 3 (Cas 3), caspase 8 (Cas 8) using Real-Time PCR analyses. IL-1 beta expressions of both kidney and liver was significantly decreased (12.9 and 2.14 fold, respectively) in LPS treated cells (p<0.05). While IFN-gamma expression was up regulated in kidney, it had down regulation in liver. LPS decreased both Cas 3 and 8 expressions in kidney but increased in liver. +CAR increased expressions of IL-1 beta and IFN-gamma compared with the control (up to 2-3 fold) in all tissues except caspase gene expressions that were similar in the control. In all tissues, IL-1 beta and IFN-gamma expressions increased in +CAR group, expect IFN-gamma in the kidney. However, Cas 3 and 8 expressions including apoptosis was induced by up-down regulations in all tissues compared to LPS-injected fish. The results showed that carvacrol had pro-inflammatory and apoptotic effects especially on liver tissue of LPS-induced inflammation model of Oncorhynchus mykiss.
AtıfWoS4OpenAlex3İncele - MakaleAçık Erişim2010Scopus SJRQ3Effects of cypermethrin on antioxidant status, oxidative stress biomarkers, behavior, and mortality in the freshwater mussel Unio elongatulus eucirrus
Köprücü, Kenan; Yonar, Serpil Mise; Seker, Engin
In this study, the effects of cypermethrin on antioxidant status, oxidative stress biomarkers, behavior, and mortality in the freshwater mussel Unto elongatulus eucirrus were examined. Cypermethrin was applied at concentrations of 5, 10, 20, 40, 80, and 160 mu g/L, for 1, 24, 48, 72, and 96 h. With increasing cypermethrin concentrations, the mussels showed significantly (P < 0.05) increased lipid peroxidation (MDA), which might be associated with decreased levels of reduced glutathione (GSH) and catalase (CAT) activity in the digestive glands and gills of the mussels. Negative correlations were observed between the MDA and the GSH and CAT levels after cypermethrin exposure, indicating a protective role of GSH and CAT against lipid peroxidation, and suggesting the use of these antioxidants as a potential biomarker of toxicity associated with contaminant exposure in freshwater mussels. In addition, at 5 mu g/L, cypermethrin had no effect on the duration of the active and rest periods. All higher concentrations caused inhibition of the filtration activity by reducing the active periods and lengthening the rest periods. The active periods shortened as the cypermethrin concentrations increased, the reduction being 90% of the control at 160 mu g/L. Rest periods were longest (237% longer than the control) at 160 mu g/L. The 48, 72, and 96 h LC50 values of cypermethrin for mussels were determined as 96.50, 77.96, and 59.20 mu g/L, respectively (P < 0.05). The results indicate that the insecticide cypermethrin has a harmful effect not only on nontarget aquatic arthropods and fish, but also on mollusks, although the sensitivity of mussels is less than that of fish. Being a general toxicant for aquatic life, cypermethrin should be used with great caution in agriculture to protect natural waters from contamination.
AtıfWoS34İncele - MakaleYalnız künye2012Scopus SJRQ2Compensatory growth response of European sea bass (Dicentrarchus labrax L.) under cycled starvation and restricted feeding rate
Türkmen, Serhat; Eroldogan, Orhan Tufan; Yilmaz, Hatice Asuman; Ölçülü, Abdullatif; Inan, Gul Ayten Kiris; Erçen, Zeynep; Tekelioglu, Nazmi
The compensatory growth response of the European sea bass (Dicentrarchus labrax) that faced cycling starvation and restricted ration was assessed. Juveniles (10.5g) were stocked into 15 tanks at a density of 25 fish per tank. Five different feeding regimes were tested on triplicate groups of fish: CSatiation: control fed for 60days without deprivation, CRestricted: 25% restricted feeding, S-R: 1day starvation then 4days CRestricted feeding, R-F: 1day CRestricted feeding then 4days CSatiation feeding, and, finally, S-F: 1day starvation then 4days CSatiation feeding. The specific growth rate of fish in the CSatiation (2.5 +/- 0.06%day-1), S-F (2.5 +/- 0.11%day-1) and R-F (2.4 +/- 0.18%day-1) were significantly higher than that of CRestricted (2.2 +/- 0.05%day-1) or S-R (2.0 +/- 0.01%day-1). Fish in S-F group were able to achieve catching up with the CSatiation. There was no significant difference in feed conversion rates but R-F and S-F consumed approximately 34% more feed than CSatiation following the first re-feeding day. Although, the highest lipid content was observed in CSatiation (14.4%), S-R (33.3% dry matter) had the highest water content compared with the CSatiation and CRestricted (37.8% and 36.9% dry matter respectively). In conclusion, it may be concluded that sea bass has rapid response to cycling starvation/re-feeding and that a 25% restricted feeding ratio is insufficient to invoke a compensatory growth response in sea bass.
AtıfWoS24OpenAlex24İncele - MakaleAçık Erişim2016Scopus SJRQ3The influence of dietary antioxidant on ovarian eggs and levels of vitamin E, C, A, astaxanthin, β-carotene and oxidative stres in tissues of Astacus leptodactylus (Eschscholtz)
Barim-Oz, O.; Sahin, H.
The experiment was conducted to determine the most effective antioxidant (among the vitamin E (VE), vitamin C (VC), vitamin A (VA), astaxanthine (AX), beta-carotene (beta C)) on the ovarian egg number and size, level of VE, VC, VA, AX, beta C and oxidative stress (as malondialdehyde (MDA)) in the hepatopancreas, ovarian, gills and muscle tissue during ovarian development of Astacus leptodactylus. One control (C) and five experimental diets (EE, EC, EA, EAX and E beta C) were prepared. The EE, EC, EA, EAX and E beta C groups were formed by added 150 mg kg-1 VE, 200 mg kg-1 VC, 240 mg kg-1 VA, 200 mg kg-1 AX and 200 mg kg-1 beta C to diet C, respectively. At the end of the experiment found that the dietary antioxidants increased ovarian egg number and size and reduced the level of MDA in the tissues. Ovarian egg number and size were highest in the EE and EAX diet groups in the comparison to control (p< 0.001). The level of MDA in the tissues was lowest in the EAX diet group in the comparison to control (p< 0.001). The highest levels of VE, VC, VA, AX and beta C were found in the hepatopancreas and ovarian compared with muscle and gills. The highest level of MDA also was determined in the ovarian according to other tissues. In conclusion, the VE and AX in broodstock diets were the most effective antioxidants on the ovarian egg number and size of A. leptodactylus.
AtıfWoS16OpenAlex53İncele - MakaleYalnız künye2016Scopus SJRQ2Testing the human capital development model: the case of apprenticeships in Turkey
Akpinar, Taner; Gün, Servet
Human capital theory was developed to study how individual agents make rational choices or how they invest in human capital to maximize their welfare. One of the leading founders of this perspective, Becker, argues that schooling, on-the-job training, medical care, migration and searching for information about prices and incomes are different types of human capital as all these investments improve skills, knowledge or health, thereby increasing individual welfare. He states that education and training are the most important investments in human capital. Apprenticeship training is, thus, identified and treated as a type of investment in human capital. At first glance, it seems that apprentices who are being trained are acquiring skills in a specific vocation. One would suppose that the trainees are getting knowledge and skills and that they would become masters in their profession after a long training process. However, further enquiry is needed to see if this is the case in reality. The present small-scale, exploratory study, based on 20 interviews - 10 with apprentices and 10 with their employers - aims to investigate the apprenticeship training system in Turkey. In doing so, it seeks to test the basic tenets of human capital theory against the facts discovered. The findings, if they could be generalized, suggest that the Turkish apprenticeship system is a form of child labour rather than a training process. Contrary to apprentice training being a human capital investment, the study finds that trainees do not rationally decide to enter an apprenticeship nor are they selected by a meritocratic system. All of them come from poor peasant families or low-wage working families where the most pressing need is for the child to earn money.
AtıfWoS6OpenAlex9İncele - MakaleYalnız künye2018Scopus SJRQ1The Origin of Stepped Rock-Cut Tunnels in Eastern Anatolia
Koroglu, Kemalettin; Danismaz, Harun
Stepped rock-cut tunnels are among the most interesting remains at many fortresses in Eastern Anatolia. The construction of these tunnels, which are cut deep into rock surfaces up to a length of 350 m, must have been at least as difficult as that of the fortification walls and expertise would have been required. Stepped rock-cut tunnels and associated fortresses in Eastern Anatolia have not so far been evaluated as a whole. The stepped rock tunnels in Eastern Anatolia have been accepted as one of the basic criteria indicating the Urartian period since the beginning of the 20th century. In this study, we first consider the types of stepped rock-cut tunnels in Eastern Anatolia, the purposes of their construction, and their distribution. We then discuss their dating and our interpretation of the period of their arrival in the region of Eastern Anatolia.
AtıfWoS7OpenAlex4İncele
