Sürdürülebilir Kalkınma Amaçları
Yazarlar
- Uzun, Sevda(77)
- Merdan, Mehmet(73)
- Duran, Celal(54)
- Ozdes, Duygu(50)
- Baltaci, Cemalettin(45)
- Kaygusuz, Abdullah(45)
- Kulakaç, Nurşen(39)
- Ashyralyyev, Charyyar(38)
- Karsli, Orhan(37)
- Demir, Selim(36)
- Öztürk, Serkan(36)
- Dokuz, Abdurrahman(35)
- Turan, Ibrahim(35)
- Araz, Onur(33)
- Kandemir, Raif(31)
- Sipahi, Ferkan(30)
- Topal, Fevzi(30)
- Kurt, Kemal(28)
- Peker, Iskender(28)
- Arslan, Mehmet(27)
- Baltacı, Cemalettin(27)
- Maden, Nafiz(27)
- Ozturk, Samet(27)
- Aydin, Aydanur(26)
- Vural, Alaaddin(26)
- Bayrakdaroglu, Serdar(25)
- Kurnaz, Muammer(25)
- Reis, Hatice Catal(25)
- Akar, Zeynep(24)
- Aydin, Faruk(24)
- Gücer, Mehmet Ali(24)
- Topal, Meryem(24)
- Yolcu, Halil(24)
- Yücel, Cem(24)
- Anaç, Halil(23)
- Kankal, Murat(23)
- Ürkek, Bayram(23)
- Aliyazicioglu, Yuksel(22)
- Günen, Mehmet Akif(22)
- Tuncer, Metin(22)
Yayınlar
- MakaleAçık Erişim2016Scopus SJRQ2Determination of biological performance, dimensional stability, mechanical and thermal properties of wood-plastic composites produced from recycled chromated copper arsenate-treated wood
Tascioglu, Cihat; Tufan, Mursit; Yalcin, Mesut; Sen, Selim
The aim of this study was to investigate the dimensional stability, mechanical and biological performance and thermal degradation of wood-plastic composites made from high-density polyethylene and recycled wood treated with chromated copper arsenate (CCA), a commonly used wood preservative chemical. Virgin pine wood samples were also prepared with and without a coupling agent and used as the control group. Samples of CCA-treated Scots pine (Pinus sylvestris L.) with varying wood content were produced by adding different ratios of the coupling agent. The recycled CCA-treated wood-filled composites exhibited better flexural and tensile strength properties and dimensional stability than the control group, whilst their impact strength was less. Biological test values showed improved durability against termites and fungus with the recycled CCA-treated wood-filled composites. In addition, the leaching of heavy metals was significantly diminished when the coupling agent was utilized at a level of 5% (w/w), thus presenting a much lower impact on the environment.
AtıfScopus21WoS21OpenAlex20
İncele - MakaleYalnız künye2016Scopus SJRQ3Concentrations of elements in Lias coals from the eastern Black Sea Region, NE-Turkey
Eker, Çiğdem Saydam; Akpınar, İbrahim; Sipahi, Ferkan; Yapıcı, Ejder
ABSTRACT: The element contents and organic matter-element relation between Lias-aged coals exposed in four fields in Gümüşhane and Bayburt were investigated. In general, fixed carbon and gross calorific values of the Edire and Balkaynak coals are higher than Güvercinlik and Çerçi coals. The highest ash yields were observed in the Çerçi coals. The concentrations of Mg, P, Ca, Mo, Y, Ni, U, Zn, Ga, Ba, W, Sr, Ta, and Be of the analysed coals are positively correlated with ash yield, indicating an organic affinity. The Lias-aged coals located in Gümüşhane and Bayburt are low-rank coals.
AtıfScopus7WoS7OpenAlex9İncele - MakaleYalnız künye2016Scopus SJRQ2Positive correlation between insulin resistance and iron overload-induced oxidative stress in patients with fanconi anemia (FA)- and non-FA-related bone marrow failure: The results of a multicenter study
Erduran, Erol; Bahadir, Aysenur; Albayrak, Davut; Aliyazicioglu, Yuksel; Buyukavci, Mustafa; Turan, Ibrahim
This study investigated the relationship between DNA, protein, and lipid oxidations and insulin resistance in patients with Fanconi anemia (FA)- and non-FA-related bone marrow failure. Sixteen patients with FA, 7 non-FA-related aplastic anemia, and 10 controls were included in the study. Fasting blood glucose, simultaneous insulin, hepcidin, ferritin, 8-hydroxy deoxyguanosine (8-OHdG), protein carbonyls, malondialdehyde (MDA), and homeostatic model assessment-insulin resistance (HOMA-IR) were investigated in the patients and controls. Diepoxybutane test-positive (DEB+) patients were diagnosed with FA, whereas DEB-patients were diagnosed as non-FA. 8-OHdG levels in both FA and non-FA patients were significantly higher than those in the controls (P =.001 and P =.005, respectively). Serum ferritin levels were also higher in FA and non-FA patients than in the controls (P =.0001 and P =.005, respectively). Insulin resistance (IR) was significantly higher in FA patients than in non-FA patients and controls (P =.005 and P =.015, respectively). Significant differences were observed between 8-OHdG, ferritin, and MDA levels in patients with or without IR (P =.009, P =.001, and P =.013, respectively). Moderate and strong relations of 44% and 85% were determined between IR and ferritin levels in patients with FA or non-FA (P =.08 and P =.014, respectively). FA and non-FA patients exhibited a tendency to IR. IR was related to ferritin levels, and ferritin levels were also correlated with oxidative stress. These findings suggest that the increased rate of IR in patients with FA and non-FA may derive from increased oxidative stress, which may in turn be due to elevated serum ferritin levels.
AtıfScopus3WoS3OpenAlex4
İncele - BildiriYalnız künye2016Series multiple tuned mass dampers for vibration control of high-speed railway bridges
Kahya, V.; Araz, O.; Zingoni, A.
This paper presents Series Multiple Tuned Mass Dampers (STMDs) in vibration control of railway bridges under the passage of high-speed trains. In solution, the bridge is assumed as a Bernoulli-Euler beam, and the train is simulated as a series of moving forces with constant speed. A classic single TMD, and parallel Multiple TMD(MTMD) devices are also considered for the purpose of comparison. It is assumed that total absorber mass is the same for the devices considered. Optimum absorber parameters are obtained for the criterion based on the minimization of the maximum dynamic displacements of the beam at its midpoint. Control effectiveness and robustness of STMDs are discussed in comparison with other types of absorbers considered.
AtıfScopus21WoS10OpenAlex16İncele - MakaleAçık Erişim2016Scopus SJRQ2Use of polyvinyl chloride (PVC) powder and granules as aggregate replacement in concrete mixtures
Bolat, Hakan; Erkus, Pinar
Concrete is one of the materials in which polymer wastes are utilized. Generally, these wastes are added at specific rates in scientific studies but an important problem of waste polymers is size irregularity. Even when consistent dosage rates are used, variations in polymer size can lead to variability in the physical and mechanical properties of the concrete produced. The aim of this study is to determine physical and mechanical properties of polyvinyl chloride (PVC)-containing concretes. In order to produce normal and high strength concretes, 10%, 20%, and 30% replacement ratios of PVC powder and granules by volume of aggregate are used. Slump, fresh and hardened densities, compressive strength, capillary water absorption, and abrasion were tested on all concrete types. As the PVC ratio increases, important changes are seen in all physical and mechanical concrete properties. The unit weights of the 10%, 20%, and 30% replacement PVC powder concretes are lower by ∼4%, 8%, and 13%, respectively, as compared to the reference mixtures, and the replacement PVC granule concretes are lower by ∼2%, 4%, and 7%. Compressive strength test results showed similar trends. As PVC replacement increases, the capillary water absorption decreases between 10% and 50%, and abrasion decreases between 27% and 77%.
AtıfScopus41WoS33OpenAlex48İncele - MakaleYalnız künye2016Scopus SJRQ2Investigation of the quality and physical-geochemical characteristics of the drinking water in Gümüşhane (Turkey) city central
Sipahi, Ferkan; Uslu, Sultan
The physical (turbidity, color, smell, taste, pH, and conductivity) and geochemical properties (Ca, Mg, Na, Fe, Mn, Al, K, Cl−, HCO3 −, SO4 2−, Fe, Cu, Co, Ni, Zn, Cd, Pb, and Cr) of the drinking water in Gümüşhane city center were determined. This city center constitutes the study area. The pH levels of the water samples ranged from 6.3 to 8.2, and their conductivities ranged between 240 and 900 μS. These findings were concordant with the drinking water standards of the Turkey Standard Institute and the World Health Organization. The hardness of the water samples in the study area was between 18.1 and 115.1 °Fr. These samples were classified as extremely hard, hard, and quite hard. In addition, an assessment using the criteria for Inland Surface Water Classification indicated that considering certain parameters (pH levels, amount of Na, SO4 2−, Fe, Mn, Al, Co, Ni, Cu, and Cr), the samples belonged to class I (high quality) water. When Cl− amount and conductivity were considered, the samples belonged to the first and second classes (less polluted) of water. The water in the study area was generally classified as carbonated and sulfated (Ca + Mg > Na + K) water classes. This water contained more weak acids than strong acids (HCO3 − + CO3 2− > Cl− + SO4 2−). The pH levels (6.3–8.2) of the water in the study area were unrelated to the varying concentrations of metals in the water. Elements such as Fe, Ni, Cd, Pb, Zn, and Cu increase in the water through the water–rock interaction in the area in which water rises or through the mixture of water with either mine or industrial wastes. In addition, several water samples belonged to an acceptable water class for drinking and usage.
AtıfScopus9WoS8OpenAlex13İncele - MakaleYalnız künye2016Scopus SJRQ3The Effect of Dy Doping on the Magnetic Behavior of YBCO Superconductors
Öztürk, Ali; Doğan, Mustafa; Düzgün, İbrahim; Çelebi, Selahattin
The effect of dysprosium (Dy) doping on yttrium barium copper oxide (YBCO) prepared by conventional solid-state reaction method has been investigated by means of XRD, AC susceptibility, and DC magnetization measurements. AC susceptibility measurements for sintered YBCO pellets have been performed as a function of temperatures at constant frequency and AC field amplitude in the absence of a DC bias field. DC magnetization measurements were done at 5, 20, and 77 K upon zero field cooling (ZFC) process. The magnetization measurements showed a paramagnetic behavior existing at high magnetic fields. The magnetic field dependence of critical current density of the samples has been estimated from DC magnetization data. The partial Dy substitution for Y on YBCO superconductors improves the bulk critical current density at high magnetic fields and at high-temperature regions (higher than 20 K).
AtıfScopus18WoS15OpenAlex16İncele - MakaleYalnız künye2016Scopus SJRQ3A research on instıtutıonal socıal responsıbılıty projects executed in the matter of educatıon
Çalişir, Gülsüm
Together with developing world, needs, charges and responsibilities also are changing. At the age we are in holdings, enterprises, corporations and organisations had become charged to do community oriented works now. In this regard, those mentioned units had transformed to state that they felt themselves responsible to give they took from people to people again. Corporations especially had tended towards social responsibility stusies to be able to addres their target groups before societ within the context of public relations activities and to establish a bridge in between. As change in time also cause change in expectations, now corporations had concentrated on social responsibility studies to be able to be approved in society and to continue their existing prestiges, instead of contenting teirselves just with commercial activities. Thus, also the importance of the concept called institutional social responsibility had increased in the century we live. Within this frame, to research efforts made in social responsibility studies executed in the area of “education” is forming the subject of this study. From the point of view of mentioned notion, a sample had been formed through coincidental choice of ten of institutions becoming prominent in society in this study. According to the research done through web sites of these ten institutions included the sample, examples to the studies institutions executed in educational area had been given by telling their institutional social responsibility understandings and policies, and their contents had been tried to be expressed. While existance of institutional social responsibility policies in six institutions included the study had been drawing attention, it had been determined that Business Bank of Turkey’s (Türkiye İş Bankası) and Turkcell’s institutional social responsibility activities accomplished in educational area were more different than the other eight institution and realized in areas more than one.
- MakaleYalnız künye2016Scopus SJRQ2The investigation of adhesion and fatigue properties of TiN/TaN multilayer coatings
Baran, Ö.; Sukuroglu, E.E.; Efeoglu, İ.; Totik, Y.
TiN/TaN multilayer coatings exhibit excellent mechanical properties when compared to single layer nitride coatings. In this study, TiN/TaN multilayer coatings were deposited on Mo-alloy and W-alloy substrates by CFUBMS. The structural and mechanical properties of coatings were analysed using XRD, EDS, SEM and a micro-hardness tester, respectively. To determine the adhesion and fatigue behaviour of the coatings were performed a scratch test in two modes that a standard mode with progressive loading and sliding-fatigue multimode operation with unidirectional sliding, respectively. A microscope was used to characterize adhesion and fatigue failures. The structural, mechanical, adhesion and fatigue properties of TiN/TaN multilayer coatings significantly changed depending on the substrate.
AtıfScopus14WoS12OpenAlex13İncele - MakaleAçık Erişim2016Scopus SJRQ2Antioxidant, antiradical, and anticholinergic properties of cynarin purified from the Illyrian thistle (Onopordum illyricum L.)
Topal, Meryem; Gocer, Hulya; Topal, Fevzi; Kalin, Pinar; Köse, Leyla Polat; Gulçin, Ilhami; Çakmak, Kader C.; Küçük, Murat; Durmaz, Lokman; Gören, Ahmet C.
Cynarin is a derivative of hydroxycinnamic acid and it has biologically active functional groups constituent of some plants and food. We elucidated the antioxidant activity of cynarin by using different in vitro condition bioanalytical antioxidant assays like DMPD•+, ABTS•+, DPPH• and H2O2 scavenging effects, the total antioxidant influence, reducing capabilities, Fe2+ chelating and anticholinergic activities. Cynarin demonstrated 87.72% inhibition of linoleic acid lipid peroxidation at 30 g/mL concentration. Conversely, some standard antioxidants like trolox, tocopherol, butylated hydroxytoluene (BHT), and butylated hydroxyanisole (BHA) exhibited inhibitions of 90.32, 75.26, 97.61, 87.30%, and opponent peroxidation of linoleic acid emulsion at the identical concentration, seriatim. Also, cynarin exhibited effective DMPD•+, ABTS•+, DPPH•, and H2O2 scavenging effects, reducing capabilities and Fe2+ chelating effects. On the contrary, IC50 and Ki parameters of cynarin for acetylcholinesterase enzyme inhibition were determined as 243.67 nM (r2: 0.9444) and 39.34 ± 13.88 nM, respectively. This study clearly showed that cynarin had marked antioxidant, anticholinergic, reducing ability, radical-scavenging, and metal-binding activities.
AtıfScopus169WoS156OpenAlex169İncele - MakaleYalnız künye2016Scopus SJRQ1Structure and surface properties of Al2O3–TiO2 ceramic coated AZ31 magnesium alloy
Çelik, İlhan
Magnesium and its alloys are the engineering materials which have the potential ability to be able to used widely particularly in the automotive, aerospace and in the biomedical sectors, especially thanks to their features such as lightness, specific strength that they have and biocompatibility. However, due to their poor wear resistance and corrosion resistance, the areas of usage are being restricted. This situation prevents Mg alloys to be used without any surface protection despite their good mechanical properties such as high strength/weight ratio. In this study, plasma spraying method is used to improve the poor corrosion resistance of AZ31 Mg alloy. Al2O3–13 wt% TiO2 (AT13) and Al2O3–40 wt% TiO2 (AT40) composite ceramic coatings were coated successfully on the surfaces of AZ31 Mg samples. The wear properties of the AT13 and AT40 coated samples were investigated for tribological applications. Surface morphology and microstructure of the duplex treated samples were analyzed by scanning electron microscopy (SEM) and X-ray diffraction (XRD). The microhardness value of the uncoated AZ31 Mg alloy is 40±3 HV0.1, while the microhardness values of the AT40 and AT13 coatings are enhanced to 800±39 HV0.1 and 1500±35 HV0.1, respectively.
AtıfScopus58WoS54OpenAlex57İncele - MakaleYalnız künye2016First detection of hypomyelination associated with bovine viral diarrhoea virus in an aborted calf in gumushane region
Dinçel, Güngör Çaǧdaş; Gökhan, Nezihe
In this study, hydranencephaly and mild cerebellar hypoplasia were reported macroscopically, microscopically and immunohistochemically in an aborted Holstein Friesian calf. A relationship between Bovine Viral Diarrhoea Virus (BVDV) infection and histopathology associated with the central nervous system (CNS) lesions were demonstrated. In the histopathology, perivascular haemorrhage, oedema, neuronal necrosis and degeneration were observed in the CNS. BVDV positive immunoreaction was detected in neurons, glial and endothelial cells of CNS by immunohistochemical examination. As far as the authors are concerned, this is the first report of BVDV present in an aborted Holstein Friesian Calf in Gumushane region. This finding may have important implications for the epidemiology and control of BVDV infection in the Gumushane region.
- MakaleAçık Erişim2016Scopus SJRQ1Comparison of verona integron-borne metallo-β-lactamase (VIM) variants reveals differences in stability and inhibition profiles
Makena, Anne; Düzgün, Azer Ö.; Brem, Jürgen; McDonough, Michael A.; Rydzik, Anna M.; Abboud, Martine I.; Saral, Ayşegül; Çiçek, Ayşegül Č.; Sandalli, Cemal; Schofield, Christopher J.
Metallo-β-lactamases (MBLs) are of increasing clinical significance; the development of clinically useful MBL inhibitors is challenged by the rapid evolution of variant MBLs. The Verona integron-borne metallo-β-lactamase (VIM) enzymes are among the most widely distributed MBLs, with>40 VIM variants having been reported. We report on the crystallographic analysis of VIM-5 and comparison of biochemical and biophysical properties of VIM-1, VIM-2, VIM-4, VIM-5, and VIM-38. Recombinant VIM variants were produced and purified, and their secondary structure and thermal stabilities were investigated by circular dichroism analyses. Steady-state kinetic analyses with a representative panel of β-lactam substrates were carried out to compare the catalytic efficiencies of the VIM variants. Furthermore, a set of metalloenzyme inhibitors were screened to compare their effects on the different VIM variants. The results reveal only small variations in the kinetic parameters of the VIM variants but substantial differences in their thermal stabilities and inhibition profiles. Overall, these results support the proposal that protein stability may be a factor in MBL evolution and highlight the importance of screening MBL variants during inhibitor development programs.
AtıfScopus45WoS42İncele - BildiriAçık Erişim2016Scopus SJRQ4Assessment of sessile oak (quercus petraea L.) leaf as bioindicator for exploration geochemistry
Vural, A.
The element contents of sessile oak (Quercus petraea L.) leaves which grow on hydrothermally altered area with high element contents were studied at Gümüshane and its near vicinity. The aim of this study is to determine threshold element contents of Q. petraea L. leaves growing on the area. For this purpose, oak leave samples collected were analyzed by inductively coupled plasma-mass spectrometry for concentrations of some elements which were the group of most common trace elements in exploration geochemistry studies. The assessment of the element contents of the oak leaf is based on the descriptive statistics and computations of threshold values of leaves depending on statistical parameters and average element contents of the plants growing on lands in normal background values for the elements. According to Q-Q (normal quantile-quantile) plots, the Kolmogorov-Smirnov tests etc., all the elements, do not pass normality tests. Because of that, threshold values of the elements in leaves of oak were computed by median+median absolute deviation (MAD) and median+2MAD used in raw values for the elements. The data revealed that concentration levels of the examined elements in the leaves in the study area were determined as above and/or exceeded the upper limit of the normal range than in leaf of oak (Q. petraea L.) which grows on lands with normal elements background. Therefore, it is concluded that leaves of Q. petraea L. can be used as bioindicator in exploration geochemistry, especially for base metal ore deposits.
AtıfScopus8WoS8OpenAlex10İncele - Editöre MektupAçık Erişim2016Scopus SJRQ2A novel integron gene cassette harboring VIM-38 metallo-β-lactamase in a clinical pseudomonas aeruginosa isolate
Beriş, Fatih Şaban; Akyildiz, Esma; Düzgün, Azer Özad; Coşkun, Umut Safiye Say; Sandalli, Cemal; Çiçek, Ayşegül Çopur
AtıfScopus5WoS5OpenAlex4İncele - MakaleYalnız künye2016Scopus SJRQ2Comparison of local geoid height surfaces, in the province of Trabzon
Karaaslan, Özge; Tanır Kayıkçı, Emine; Aşık, Yusuf
In this study, the estimation of a local geoid model in the area of Trabzon by using geometric methods is presented. The geometric method used in this study interpolates Global Positioning System-derived ellipsoidal and orthometric heights by using the weighted average interpolation, polynomial surface regression, and multiquadratic interpolation. The orthometric and ellipsoidal heights measured at 600 C3 order control stations within a reference benchmark network covering the entire area of Trabzon in Turkey were used in this study. From the existing orthometric and ellipsoidal heights at control stations, the geoid heights were determined. Control stations were divided into two sets, namely, “reference stations” and “testing stations,” to test the estimated geoid height surface. The three methods are compared from a practical point of view by using the descriptive statistics of the root mean square error, mean absolute error, maximum error, and minimum error of the geoid height residuals.
AtıfScopus9WoS9OpenAlex11İncele - MakaleYalnız künye2016Scopus SJRQ2Influences of seasonal alterations on the burning characteristics of impregnated and surface treated chestnut (Castanea sativa mill ) wood
Yasar, S. Sadiye; Fidan, Muhammed Said; Yasar, Mehmet; Atar, Musa; Alkan, Elif
Wood material is generally preferred due to its resilience against earthquakes, aesthetic properties, and its warmth as well as being natural. One of the major problems of employing this natural and breathable product is its ease of combustibility. Despite this adverse characteristic, its high resistance against burning and its ability to maintain its weight bearing characteristics until the very end does not lead to sudden collapses as is seen in steel and concrete systems. Treating wood with impregnating materials in order to improve its resistance against burning is an improved safety measure for the prevention of ignition. This study investigate seasonal effects on the ignition characteristics of chestnut wood samples impregnated using either Tanalith-E or Wolmanit-CB as detailed in ASTM-D 1413-76 and surface-treated using water-based or synthetic varnish as detailed in ASTM-D 3023- 88. The temperature of burning process was the highest in the investigated samples, in those impregnated with Wolmanit-CB and those that were treated with water-based varnish. The results of the study indicated that weight loss was lower during winter (84.59 %), for samples that were impregnated using Wolmanit-CB (84.46 %) and in those that were treated with water-based varnish (84.18 %). On the other hand, the O2 content was determined to be the highest and the CO content the lowest in winter samples that were impregnated using Wolmanit-CB and treated with synthetic varnish.
AtıfScopus5WoS5İncele - MakaleAçık Erişim2016Scopus SJRQ2Stability assessment of high-steep cut slope debris on a landslide (Gumushane, NE Turkey)
Kaya, Ayberk; Alemdağ, Selçuk; Dağ, Serhat; Gürocak, Zülfü
The objective of this study was to examine the effects on the stability of slope debris of planned slope excavations around the vicinity of Gumushane Imam-Hatip High School in NE Turkey. To assess the geotechnical properties of slope debris along the determined cross-sections, four exploration boreholes with a total length of 100 m were drilled and undisturbed soil samples were collected. Slope debris is composed of two soil zones and its depth varies between 15 m and 21 m. It was determined from the experimental results that the soil class of the upper zone is CL (low plasticity clay) and CH (high plasticity clay) whereas the soil class of the lower zone is SC (clayey sand) and GC (clayey gravel). Peak cohesions of the upper and lower zones were 26.3 kPa and 10.2 kPa, and their peak internal friction angles were 16° and 24°, respectively. Limit equilibrium (LE) analyses for the slopes were evaluated using Slide v5.0 software for the pre-excavation, post-excavation, and supported cases. The results of LE analyses showed the existence of a landslide along the SW direction; the landslide would extend to cover the whole region if the excavation were to be performed without applying engineering measures. Finally, the precautions to be taken were determined and stability analyses for the supported case were evaluated. These analyses showed that the active lateral forces applied by the proposed retaining walls to the cut slope should be 8325 and 3103 kN, respectively.
AtıfScopus35WoS28OpenAlex41İncele - MakaleYalnız künye2016Scopus SJRQ2Lipstick politics and framing competition: an experiment about the Turkish Airlines news
Özarslan, Hüseyin; Güran, Mehmet Salih
ABSTRACT: Framing is a discourse forming procedure with a direct effect on the very meaning of the news coverage. While framing itself is unavoidable, its controlled usage requires not only individual journalistic awareness of cultural, social, ideological and even psychological factors, but it also requires an institutionalization and cultivation of journalistic best practice. This experiment studies the effects of different news framing practices of the same event on audience reception by using actual news coverage from the Turkish media. 348 students were randomly assigned to three experiment groups where they were exposed to actual news stories about a corporate attire regulation at the Turkish Airlines that had been recently issued. A factor analysis explored their thoughts on the news stories and produced respectively the managerial requirements frame and the repression of women frame as most apparent in the thoughts of the participants of the respective groups.
- MakaleYalnız künye2016Scopus SJRQ2A New Approach for Determination of Volumetric Water Content in Soil Samples by Gamma-Ray Transmission
Celik, Necati; Altin, Duygu; Cevik, Ugur
A new method was presented for the purpose of volumetric water content determination in any soil sample by gamma-ray transmission. Monte Carlo (MC) simulation technique was used to determine the functional behavior of the linear attenuation coefficient of soil samples having different water contents for three soil samples. Using this functional behavior, the linear attenuation coefficients of dry soil and water were obtained from the intercept and the slope, respectively. It was experimentally shown that the mass attenuation coefficients of soil samples were not sensitive to the chemical composition but only to the physical density. This independence was exploited in this study to obtain the linear attenuation coefficient of a completely dry soil which was found to be 0.1409, 0.1274, and 0.1657 cm−1 for Gumushane, Ardahan, and Trabzon soil, respectively. The linear attenuation coefficient of water was determined to be 0.09 cm−1. Then, the volumetric water contents were obtained by measuring the gamma-ray intensities passed through three wet soil samples. The results were found to be 0.186, 0.182, and 0.214 cm3 cm−3 for Gumushane, Ardahan, and Trabzon soil, respectively. The results obtained by the method introduced were compared with the results obtained using gravimetric method. A very good agreement was observed.
AtıfScopus7WoS7OpenAlex8İncele