Sürdürülebilir Kalkınma Amaçları
Yazarlar
- Uzun, Sevda(67)
- Merdan, Mehmet(59)
- Duran, Celal(49)
- Ozdes, Duygu(46)
- Kaygusuz, Abdullah(45)
- Demir, Selim(37)
- Turan, Ibrahim(37)
- Karsli, Orhan(36)
- Öztürk, Serkan(35)
- Dokuz, Abdurrahman(34)
- Araz, Onur(32)
- Kandemir, Raif(31)
- Kulakaç, Nurşen(29)
- Sipahi, Ferkan(29)
- Arslan, Mehmet(27)
- Baltaci, Cemalettin(27)
- Baltacı, Cemalettin(27)
- Kurt, Kemal(27)
- Topal, Fevzi(27)
- Gücer, Mehmet Ali(25)
- Peker, Iskender(25)
- Aydin, Faruk(24)
- Bayrakdaroglu, Serdar(24)
- Maden, Nafiz(24)
- Ozturk, Samet(24)
- Vural, Alaaddin(24)
- Yolcu, Halil(24)
- Yücel, Cem(24)
- Aliyazicioglu, Yuksel(23)
- Kankal, Murat(23)
- Reis, Hatice Catal(23)
- Ürkek, Bayram(23)
- Günen, Mehmet Akif(22)
- Kurnaz, Muammer(22)
- Topal, Meryem(22)
- Karimullah, Suud Sarim(21)
- Uysal, Ibrahim(21)
- Ashyralyyev, Charyyar(20)
- Aydin, Aydanur(20)
- Bayraktar, Alemdar(20)
Yayınlar
- MakaleAçık Erişim2016Scopus SJRQ2A novel modified PAIR technique using a trocar catheter for percutaneous treatment of liver hydatid cysts: a six-year experience
Nayman, Alaaddin; Guler, Ibrahim; Keskin, Suat; Erdem, Tuba Berra; Borazan, Hale; Kucukapan, Ahmet; Ozbiner, Huseyin; Batur, Abdussamed; Ertekin, Ersen; Feyzioglu, Bahadir
PURPOSE We aimed to demonstrate the success and reliability of a novel puncture, aspiration, injection, and reaspiration (PAIR) technique in liver hydatid cysts. METHODS Percutaneous treatment with ultrasonographic guidance was performed in 493 hepatic hydatid cysts in 374 patients. Patients were treated with a new PAIR technique by single puncture method using a 6F trocar catheter. The results of this novel technique were evaluated with regards to efficacy and safety of the procedure and complication rates. RESULTS Out of 493 cysts, 317 were Gharbi type I (WHO CE 1) and 176 were Gharbi type II (WHO CE 3A). Of all cysts, 13 were referred to surgery because of cystobiliary fistulization. Recurrence was observed in 11 cysts one month later. Therefore, the success rate of the PAIR technique was 97.7% (469/480). Minor complications (fever, urticaria-like reactions, biliary fistula) were seen in 44 treated patients (12%, 44/374); the only major complication was reversible anaphylactic shock which was observed in two patients (0.5%, 2/374). CONCLUSION This novel modified PAIR technique may be superior to catheterization by Seldinger technique due to its efficiency, easier application, lower severe complication rate, and lower cost. Further comparative studies are required to confirm our observations.
AtıfWoS24OpenAlex32
İncele - MakaleYalnız künye2016Scopus SJRQ4MODIFIED KDIGO FOR PREDICTING MORTALITY IN ICU PATIENTS RECEIVING CONTINUOUS RENAL REPLACEMENT THERAPY FOR ACUTE RENAL FAILURE: KDIGO-URINARY OUTPUT VS. KDIGO-SERUM CREATININE LEVEL
Tulgar, Serkan; Cakiroglu, Basri; Cevik, Banu Eler; Karakilic, Evvah; Ates, Nagihan Gozde; Gergerli, Ruken; Ozdemir, Erman
Introduction: Acute Renal Injury (ARI) is a constant problem for patients in intensive care and Continuous Renal Replacement Therapy (CRRT) is an ever-more important part of acute renal injury (ARI) treatment. Various criteria have been used for the diagnosis and classification of acute renal failure, including RIFLE (Risk-Injury-Failure-Loss-End stage), AKIN (Acute Kidney Injury Network) and most recently KDIGO (Kidney Disease: Improving Global Outcomes). Many studies have only evaluated urinary output or serum creatinine when categorizing ARI. Our aim was to determine the predictors of mortality in intensive care patients treated with CRRT and to compare mortality with ARI level as determined by KDIGO-Serum Creatinine (KDIGO-SCr) and KDIGO-urinary output (KDIGO-UO) Materials and methods: This retrospective study was performed on intensive care patients receiving CRRT at our institute between January 2010-December 2011. Patient files were reviewed and demographic data, hospitalization time, laboratory findings, CRRT commencement and ARI levels were noted. Results: Seventy patients were included in the study. Mortality was found to be associated with patients' age, Glascow Coma Scale (GCS) score, Acute Physiology and Chronic Health Evaluation (APACHE) II score and adjusted predicted death rate. (p<0,01). Receiver Operating Curve (ROC) area under the curve was statistically significant for determination of mortality using KDIGO-SCR (p<0.01) although the same was not true for KDIGO-UO (p>0.05). Conclusions: We believe that RIFLE, AKIN, KDIGO criteria are each good predictors of mortality. In the case of KDIGO criteria, based solely on serum creatinine or urinary output, KDIGO-SCr was found to be a better predictor of mortality when compared to KDIGO-UO.
AtıfWoS1İncele - MakaleAçık Erişim2016Scopus SJRQ1Complex subvolcanic magma plumbing system of an alkali basaltic maar-diatreme volcano (Elie Ness, Fife, Scotland)
Gernon, T. M.; Upton, B. G. J.; Ugra, R.; Yücel, C.; Taylor, R. N.; Elliott, H.
Alkali basaltic diatremes such as Elie Ness (Fife, Scotland) expose a range of volcanic lithofacies that points to a complex, multi -stage emplacement history. Here, basanites contain phenocrysts including pyrope garnet and sub-calcic augites from depths of similar to 60 km. Volcanic rocks from all units, pyroclastic and hypabyssal, are characterised by rare earth element (REE) patterns that show continuous enrichment from heavy REE (HREE) to light REE (LREE), and high Zr/Y that are consistent with retention of garnet in the mantle source during melting of peridotite in a garnet lherzolite fades. Erupted garnets are euhedral and unresorbed, signifying rapid ascent through the lithosphere. The magmas also transported abundant pyroxenitic clasts, cognate with the basanite host, from shallower depths (similar to 35-40 km). These clasts exhibit wide variation in texture, mode and mineralogy, consistent with growth from a range of compositionally diverse melts. Further, clinopyroxene phenocrysts from both the hypabyssal and pyroclastic units exhibit a very wide compositional range, indicative of polybaric fractionation and magma mixing. This is attributed to stalling of earlier magmas in the lower crust principally from similar to 22 to 28 km as indicated by pyroxene thermobarometry. Many clinopyroxenes display chemical zoning profiles, occasionally with mantles and rims of higher magnesium number (Mg#) suggesting the magmas were mobilised by juvenile basanite magma. The tuffs also contain alkali feldspar megacrysts together with Feclinopyroxene, zircon and related salic xenoliths, of the 'anorthoclasite suite' - inferred to have crystallised at upper mantle to lower crustal depths from salic magma in advance of the mafic host magmas. Despite evidence for entrainment of heterogeneous crystal mushes, the rapidly ascending melts experienced negligible crustal contamination. The complex association of phenocrysts, megacrysts and autoliths at Elie Ness indicates thorough mixing in a dynamic system immediately prior to explosive diatreme-forming eruptions. (C) 2016 Elsevier B.V. All rights reserved.
AtıfScopus20WoS18
İncele - MakaleYalnız künye2016Scopus SJRQ2Do early procalcitonine levels aid in predicting mortality in burn patients?
Piroglu, Isilay Demir; Tulgar, Serkan; Piroglu, Mustafa Devrim; Thomas, David Terence; Karakilic, Evvah; Gergerli, Ruken; Ates, Nagihan Gozde; Demir, Ahmet
Aim: Burn patients in intensive care units (ICU) are at high risk of mortality. Our aim in this stuy is to evaluate the use of first 48 hour procalcitonin level (PCT), C-reactive protein (CRP) and APACHE II score for the prediction of mortality in burn patients admitted to ICU. Material and method: Files of patients with burns admitted to a tertiary centre's burn unit were retrospectively analysed and those with procalcitonin and C-reactive protein level measurements and APACHE II scores within first 48 hours of admittance were included in this study. Patients with comorbidities that would effect PCT and CRP levels such as chronic renal or liver failure were excluded from the study. Patients PCT, CRP and APACHE II scores were compared with the outcome of patients. Results: Seventy patients were included in this study. While CRP levels were lower in patients that were deceased, PCT levels were significantly higher in these patients. In patients with APACHE II score > 20 and PCT > 2 ng/ml, mortality was statistically very significantly higher compared with other patients. Logistical regression analysis showed that high PCT levels and APACHE II scores were important at predicting mortality in these patients. Conclusion: High PCT levels within 48 hours of burns is a predictor of mortality in these patients. Additional studies are required to correctly determine the cut-off value. A modified scoring system including APACHE II and PCT may be useful for better predicting mortality, although larger multi-centered studies are required.
AtıfWoS3İncele - MakaleYalnız künye2016Scopus SJRQ2Permo-Carboniferous granitoids with Jurassic high temperature metamorphism in Central Pontides, Northern Turkey
Gücer, Mehmet Ali; Arslan, Mehmet; Sherlock, Sarah; Heaman, Larry M.
In the northern part of the Central Pontides (N Turkey) there are different metamorphic rocks exposed, notably the Devrekani metamorphic rocks. Here, upper amphibolite-lower granulite facies metamorphic rocks contain predominantly paragneiss, orthogneiss and metacarbonate, and to a lesser extent, amphibolite and quartzite, with cross-cutting aplite, pegmatite and granite veins. This is the first report of these rocks and includes new data on the petrochemistry, geochronology and metamorphic evolution of the Devrekani orthogneisses from the Central Pontides. The orthogneisses show five different mineral parageneses with the characteristic mineral assemblage quartz + K-feldspar + plagioclase + biotite +/- hornblende +/- opaque (+/- ilmenite and +/- magnetite), and accessory minerals (zircon, sphene and apatite). These metamorphic rocks exhibit generally granoblastic, lepidogranoblastic and nematolepidogranoblastic with locally migmatitic and relic micrographic textures. They have well-developed centimeter-spaced gneissic banding and display gneissose structure with symmetric, asymmetric and irregular folds. The petrographic features, mineralogical assemblages and weak migmatization reflect high temperature conditions. Thermometric calculations in the orthogneisses indicate metamorphic temperatures reached 744 +/- 33 A degrees C. Field relations, petrography and petrochemistry suggest that the orthogneisses have predominantly granodioritic and some granitic protoliths, that show features of I-type, medium to high-potassic calc-alkaline volcanic arc granitoids. The orthogneisses have high contents of LILEs and low contents of HFSEs with negative Nb and Ti anomalies, which are typical of subduction-related magmas. The orthogneisses also show significant LREE enrichment relative to HREE with negative Eu anomalies (Eu-N/Eu* = 0.33-1.07) with La-N/Lu-N = 6.98-20.47 values. Based on U-Pb zircon dating data, the protoliths are related to Permo-Carboniferous (316-252 Ma) magmatism. It is likely that peak metamorphism took place during the Jurassic as reflected by the U-Pb zircon ages (199-158 Ma) and also 40Ar/39Ar from hornblende/biotite (163-152 Ma). The four biotite 40Ar/39Ar average ages from the rock samples are ca. 156 Ma, suggesting that the metamorphic rocks cooled to 350-400 A degrees C at ca. 156 Ma. Conclusively, the Devrekani metamorphic rocks can be ascribed as products of Permo-Carboniferous continental arc magmatism overprinted by Jurassic metamorphism in the northern Central Pontides.
AtıfScopus30WoS27OpenAlex23İncele - MakaleYalnız künye2016Scopus SJRQ1Cenozoic forearc gabbros from the northern zone of the Eastern Pontides Orogenic Belt, NE Turkey: Implications for slab window magmatism and convergent margin tectonics
Eyuboglu, Yener; Dudas, Francis O.; Santosh, M.; Zhu, Di-Cheng; Yi, Keewook; Chatterjee, Nilanjan; Jeong, Youn-Joong; Akaryali, Enver; Liu, Ze
The Eastern Pontides Orogenic Belt represents one of the best examples of fossil convergent margins in the eastern Mediterranean region. However, the origin and geodynamic setting of the late Mesozoic-Cenozoic magmatism in this belt remain controversial due to lack of systematic geological, geochemical and chronological data. The general consensus is that the late Mesozoic-Cenozoic igneous activity is related to northward subduction of oceanic lithosphere in the late Mesozoic and following collision between Tauride and Pontide blocks in the early Cenozoic Here we present a comprehensive study focusing on the origin and geodynamic setting of gabbro bodies exposed along a narrow zone, parallel to the southeastern coast of the eastern Black Sea basin, in the Northern Zone of the Eastern Pontides Orogenic Belt. The studied gabbro bodies are hosted within late Cretaceous basaltic, andesitic, and dacitic volcanics including pyroclastic rocks and interbedded sedimentary rocks. The gabbro bodies range in size from 0.1 km(2) to 1.5 km(2), and outcrop patterns vary from round or elliptical to markedly elongate with sharp and discordant contact with the host rocks. Their mineral assemblage includes mainly clinopyroxene, plagioclase, minor olivine, amphibole, magnetite and rarely orthopyroxene, biotite, zircon and titanite. The occurrence of sutured grain boundaries on clinopyroxene and plagioclase, and the presence of reverse compositional zoning in clinopyroxene and olivine suggest mixing between magmas of contrasting compositions during mineral growth. Thermobarometric computations indicate that the temperature at the beginning of crystallization was similar to 1250 degrees C and crystallization was polybaric Zircon and titanite U-Pb ages indicate that these small intrusions were emplaced into crustal rocks of the Eastern Pontides Orogenic Belt during Lutetian (45 +/- 2 Ma). The depletion of HFSE is consistent with the involvement of an arc-related source in the petrogenesis of these rocks, and low to moderate enrichment Ce, Rb, Ba, K, Pb, Sr and Th suggests that involvement of subducted oceanic sediment was modest. The low Th content and low Th/Yb indicate that the role of sediment addition was nevertheless limited. The Nd, Sr and Pb isotopic data are consistent with the interpretation that the dominant source component in these gabbros is a depleted, peridotitic mantle, and that crustal contamination is relatively unimportant. We suggest that mafic magmas that produced the gabbroic intrusions were derived from melting of a depleted mantle source under the forearc region of the Eastern Pontides Orogenic Belt during southward subduction of two oceanic plates separated by a mid-ocean ridge, leading to the formation of a slab window. We also infer fractional crystallization and assimilation during both magma storage in the crust-mantle transition zone and transfer into the overlying arc crust. (C) 2015 International Association for Gondwana Research. Published by Elsevier B.V. All rights reserved.
AtıfScopus57WoS51OpenAlex60İncele - MakaleYalnız künye2015Synthesis, characterization and thermal behaviour of novel phthalocyanines bearing chalcone groups on peripheral positions
Kaya, A. A.
A new nickel, zinc, cobalt, copper and metal-free phthalocyanine was synthesized by nucleophilic aromatic substitution reaction of (E)-3-(3-hydroxyphenyl)-1-phenylprop-2-en-1-one with 4-nitrophthalonitrile and cyclotetramerisation of (E)-4-(3-(3-oxo-3-phenylprop-1-enyl)phenoxy) phthalonitrile. The new compounds were characterized by a combination of IR, H-1 NMR, C-13 NMR, UV-Vis, elemental analysis and MS spectral data. The thermal stabilities of the phthalocyanine compounds were determined by thermogravimetric analysis.
AtıfWoS2İncele - MakaleYalnız künye2015DYNAMIC DISPLACEMENT AND STRESS ANALYSES OF CANTILEVER RETAINING WALLS CONSIDERING SOIL-STRUCTURE INTERACTION AND WALL FLEXIBILITY
Çakir, Tufan; Dag, Serhat
The Mononobe-Okabe (M-O) method based on limit equilibrium principle is widely used in the design of retaining structures against earthquake loads. However, this method does not consider the soil-structure interaction and wave propagation effects. On the other hand, it is known that the interactions of retaining structures with backfill and foundation soils transform the seismic behavior of these structures to a rather complex problem. The main purpose of this study is to evaluate the soil-structure interaction and wall flexibility effects on the seismic behavior of backfill-cantilever retaining wall-foundation/soil systems. In line with this target, three dimensional finite element models were utilized for analyzing the aforementioned systems. Seismic analyses were carried out in the time domain by considering five different foundation soil conditions and two different wall thicknesses. The results were comparatively interpreted in terms of lateral wall displacements and the stresses occurring at critical sections of the wall. It was observed that these responses may vary significantly due to soil-structure interaction and wall flexibility effects.
AtıfWoS1İncele - MakaleYalnız künye2015THE STAND OF CLUBS IN THE COMMITTE OF UNION AND PROGRESS PARTY'S ORGANIZATION AND ADMINISTRATION STRUCTURE
Çiftçi, Ali
There have been numerous academic studies about the Committee of Union and Progress/'s Party (CUP) that holds an important place in Turkish Political History. Many of these studies have deeply focused on issues, namely the foundation of the CUP, the life of its founders, the role of party during the 2nd Consitutional Monarchy, its executive team. In addition, the studies regarded to the CUP's organizational structure and features are also available. However, there has not been excessively worked on the role and importance of subsidiary organs or clubs which helped the party's contact with community. Because of this reason, this study is of originality. In this study, firstly, it will be knowledged about the foundtion of the CUP, its objectived and structure of its organization. Afterwards, the CUP's 1909, 1911, 1913 regulations are addressed by examining how CUP's subsidiary organs were regulated. Comparative study on the regulation, memories and other resources in the light of the structure, activities, objectives and political influence of the CUP's subsidiary is aimed to uncover. In the study, it will also try to show the similarity between the CUP's subsidiary organs and Republican People Party's subsidiary organs, since 1932, named Halkevleri founded in the single party era.
- MakaleYayıncıda açık erişim2015Scopus SJRQ4The Port of Samsun at the Beginning of the 20th Century According to French Archival Documents
Yilmaz, Ozgur
Due to its geographic location and agricultural potential, Samsun began to develop rapidly and became a new trade center in the middle of the 19th century. A factor was the Crimean War that created new opportunities for the southern ports of the Black Sea. But the real and most important factor was the European demand for Ottoman agricultural products in the 19th century. The rise of Samsun as a gateway for wide region like Merzifon, Amasya, Tokat, Sivas, Yozgat, Sebinkarahisar, Kayseri, Kirsehir and Diyarbakir resulted the steady increase in agricultural production supported by this foreign demand. In this way, at the end of the century Samsun became the primary port in the southern Black Sea. As a reflection of this international interest, foreign consulates established in the city. French consulate, established in 1863 was one of them. Annual commercial and maritime reports in detail prepared by consuls for each year are among the most important sources for the economic structures in the 19th century Ottoman cities. There are very valuable documents on trade in the French archives about Samsun that attracting more attention especially in the second half of the century. It is possible to observe the rise of the city from annual commercial reports prepared by French consular agents. The reports of Henri de Cortanze who served in the city between 1895 and 1906 reflect the situation of Samsun at the end of the 19th and the beginning of the 20th century. In this context, this study aims to investigate Cortanze's detailed report on the port of Samsun in 1903. By using other reports about Cortanze's consular period, the subject is evaluated in a broad sense.
- MakaleYalnız künye2015Scopus SJRQ4The Possibility of a Democracy Based on the Constituent Power: A Political Approach
Akkanat, Salih
The article aims to bring a political dimension to the problem of constituent power, which is usually discussed in terms of constitution techniques. It argues that some approaches reducing the problem of constituent power to the methodological pre-commitments or the articulations of abstract democratic principals presuppose de-ontological and apolitical premise. In other words, it focuses on the apologetic attitudes of these approaches isolating the modern content of constituent power if we consider its meaning as the creation of new political forms. In conclusion, the article points to the fact that any understanding of constituent power, which ignores its modern particularizy, may result in a poor understanding of democracy
AtıfWoS1İncele - MakaleYalnız künye2015Scopus SJRQ3EVALUATION OF ENERGY ABSORPTION OF MACRO SYNTHETIC AND STEEL FIBER REINFORCED CONCRETES
Bolat, Hakan; Simsek, Osman
This study alms to determine the energy absorption of concrete slabs (60x60x10cm) using polyester, polypropylene and steel fiber reinforced (SFRC, PYFRC, PPFRC) according to EN 14488-5. Significant differences in the energy absorption were observed between the concrete slabs strengthened with different fibers. The highest gain In energy absorption was observed In SFRC. Furthermore, concrete slabs strengthened with PPFRC and PYFRC showed 23.4% and 14.8% less energy to SFRC. Although the SFRC showed the highest energy absorption under directly negative conditions, it is important to evaluate the durability issues associated with SFRC, such negative conditions.
AtıfWoS7İncele - MakaleYalnız künye2015Scopus SJRQ1Neuroanatomical correlates of genetic risk for bipolar disorder: A voxel-based morphometry study in bipolar type I patients and healthy first degree relatives
Sariçiçek, Aybala; Yalin, Nefize; Hidiroglu, Ceren; Çavusoglu, Berrin; Tas, Cumhur; Ceylan, Deniz; Zorlu, Nabi; Ada, Emel; Tunca, Zeliha; Özerdem, Aysegul
Background: Bipolar disorder (BD) is a highly heritable mental illness which is associated with neuroanatomical abnormalities. Investigating healthy individuals at high genetic risk for bipolar disorder may help to identify neuroanatomical markers of risk and resilience without the confounding effects of burden of illness or medication. Methods: Structural magnetic resonance imaging scans were acquired from 30 euthymic patients with BD-1 (BP), 28 healthy first degree relatives of BD-I patients (HR), and 30 healthy controls (HC). Data was analyzed using DARTEL for voxel based morphometry in SPM8. Results: Whole-brain analysis revealed a significant main effect of group in the gray matter volume in bilateral inferior frontal gyrus, left parahippocampal gyrus, left lingual gyrus and cerebellum, posterior cingulate gyrus, and supramarginal gyrus (alphasim corrected (<= 0.05 FWE)). Post-hoc t-tests showed that inferior frontal gyrus volumes were bilaterally larger both in BP and HR than in HC. BP and HR also had smaller cerebellar volume compared with HC. In addition, BP had smaller left lingual gyms volume, whereas HR had larger left parahippocampal and supramarginal gyms volume compared with HC. Limitations: This study was cross-sectional and the sample size was not large. All bipolar patients were on medication, therefore we were not able to exclude medication effects in bipolar group in this study. Conclusions: Our findings suggest that increased inferior frontal gyms and decreased cerebellar volumes might be associated with genetic predisposition for bipolar disorder. Longitudinal studies are needed to better understand the predictive and prognostic value of structural changes in these regions. (C) 2015 Elsevier B.V. All rights reserved.
AtıfWoS49OpenAlex58İncele - MakaleYalnız künye2015Scopus SJRQ1Evaluation of the response to treatment of psoriasis vulgaris with reflectance confocal microscopy
Basaran, Y. K.; Gürel, M. S.; Erdemir, A. T.; Turan, E.; Yurt, N.; Bagci, I. S.
Background/objectiveReflectance confocal microscopy (RCM) is a noninvasive, objective imaging technique that provides in vivo, high-resolution skin imaging. We sought to assess epidermal and dermal changes associated with the psoriasis and its treatment with RCM before the treatment and at weeks 4 and 8 of the treatment. Material and methodsThis is an investigator-blinded, internal-controlled, follow-up study. A total of 25 patients with plaque psoriasis were included in the study. The RCM evaluation criteria were defined on the basis of the histopathological diagnostic criteria for psoriasis. The clinical severity of the psoriasis was evaluated using the Psoriasis Area Severity Index (PASI). ResultsThe RCM findings which were correlated with the PASI can be used to follow up the patient's response to treatment have been identified as follows: the acanthosis, the number of spongiotic sites, the number of regular/irregular honeycomb-like sites, the number of epidermal inflammatory cells, the number of focal microabscesses, the total epidermal thickness, the number of nonedge dermal papillae, the length of the papillary dermis, the number of dermal inflammatory cells, and the vascularization in the papillary dermis (P<0.05). ConclusionThis is the first study with a large group of patients to perform a noninvasive assessment with RCM of the response of psoriasis to different treatments: phototherapy, systemic and topical treatment. Micrometric and morphometric changes occurring in the psoriatic tissue during the 8-week treatment period were identified by in vivo RCM in a noninvasive manner. RCM is capable of monitoring of treatment response in psoriasis.
AtıfWoS24OpenAlex32İncele - MakaleYalnız künye2015RESONANT VIBRATIONS OF TWO-SPAN RAILWAY BRIDGES UNDER HIGH-SPEED TRAINS
Kahya, Volkan; Araz, Onur; Turan, Muhittin
In this study, resonant vibrations of two-span railway bridges subjected to high-speed trains (HSTs) are studied. The continuous beam is modelled by using Bernoulli-Euler beam theory, and the train is considered as a series of moving concentrated loads. The dynamic response is obtained analytically by using the assumed mode method. Effects of the speed parameter and the span to car length ratio on the response are examined. Numerical results show that the above mentioned parameters play very important role on the dynamic behavior of two-span bridges.
AtıfWoS1İncele - MakaleAçık Erişim2015Scopus SJRQ3Nutritive Value of Sunflower Silages Ensiled with Corn or Alfalfa at Different Rate
Tan, Mustafa; Yolcu, Halil; Dumlu Gul, Zeynep
Sunflower (Helianthus annuus L.) having shorter growing season, better cold tolerant and more drought resistant is important alternative silage plant in highlands. But it has poor silage quality. To improve the quality of sunflower silage can be mixed an appropriate amount of corn (Zea mays L.) and alfalfa (Medicago sativa L.). This research was carried out to evaluate quality characteristics of nine silage types: Sunflower, corn and alfalfa silages; plus their some mixtures silages (75% sunflower + 25% corn, 50% sunflower + 50% corn, 25% sunflower + 75% corn, 75% sunflower + 25% alfalfa, 50% sunflower + 50% alfalfa and 25% sunflower + 75% alfalfa); at two harvest stages: Beginning of flowering for sunflower and alfalfa and milk-dough stage for corn (early stage), and end of flowering stage for sunflower and alfalfa, and dough stage for corn (late stage). The experimental design was in a factorial arrangement of randomized complete block with replicated four times. Dry matter content (DM), crude protein content (CP), neutral detergent fiber content (NDF), acid detergent fiber content (ADF), silage pH and physical characteristics (PC) of silages were determined in this study. Mixing of alfalfa in NDF, ADF and CP and corn in DM, pH and PC had positively effect in sunflower silages. Late stage had positively affected DM, PC and pH for silage. Consequently, sunflower silages mixed with corn, with the condition of not being less than 50% at late stage, are recommended for farmers.
AtıfWoS9OpenAlex7TR Dizin4
İncele - MakaleYalnız künye2015Scopus SJRQ3A note on weighted Sobolev algebras Lω1(Rd) ∧ Wkp(Rd)
Güngör, Nihan; Sagir, Birsen
Let 1 <= p < infinity and omega be Beurling's weight function on R-d. In this article, we demonstrate some harmonic properties of Sobolev space W-k(p)(R-d) which consists of all functions on R-d whose weak derivatives up to and including order k belong to L-p( R-d). Also, we deal with some harmonic properties of intersection space A(k,omega)(p)(R-d) = L-omega(1)(R-d) boolean AND W-k(p)(R-d) by aid of Beurling algebra L-omega(1)(R-d) and Sobolev space W-k(p)(R-d). Finally, we research the inclusions and continuous embeddings between the spaces A(k,omega)(p)(Omega) where Omega subset of R-d be open set.
- MakaleAçık Erişim2015Spatial Forest Management Planning: Basic Concepts And Modeling Techniques
Kadiogullari, Ali Ihsan; Keles, Sedat; Baskent, Emin Zeki; Bingöl, Ozkan
Spatial Decision Support System is indispensable to develop spatial planning alternative by integrating spatial parameters into forest management plans using ecosystem based multiple use forest management planning concept (EBMUFM). Spatial forest planning provides several opportunities to decision makers to generate spatially implementable harvest schedules and perform spatial analyses as part of integrated planning. This paper presents the role and importance of spatial forest planning in forest management, and evaluates it in the context of Turkish forestry. Basic concepts related to spatial forest planning are explained. Some important intuitive decision support techniques (modeling techniques) widely used in spatial forest management planning were introduced. Further, spatial decision support systems for forest management planning developed in various countries were provided. Finally, it is concluded that spatial forest planning is extremely needed in EBMUFM.
AtıfOpenAlex1İncele - MakaleYalnız künye2015Scopus SJRQ2PRESSURE-DRIVEN LAMINAR PULSATING FLOW IN A PIPE: EFFECT OF THE AMPLITUDE
Aygün, Cemalettin; Aydin, Orhan
In this study, pressure-driven laminar pulsating flow in a pipe is examined numerically. Both the hydrodynamically developing flow and fully developed conditions are considered. A commercially available CFD package, FLUENT, is used in the simulations. A constant value of the time-averaged Reynolds number is considered, Re=1000. Six different values of the dimensionless frequency (F=0.01, 0.1, 1, 10, 100, 1000) and three different values of the dimensionless amplitude (A=0.1, 0.5 and 0.95) are considered. Both the hydrodynamically developing and fully developed flows are analyzed. Effects of the amplitude and frequency of the pulsating inlet velocity on the friction coefficient as well as velocity field are predicted.
AtıfWoS1İncele - MakaleYalnız künye2015Taxation of Household Solid Waste: A Critical Perspective to the Sanitation Tax in Turkey in the Context of Benefit Principle
Sentürk, Suat Hayri; Eser, Levent Yahya; Polat, Sedat
Sanitation tax (ST) being implemented in Turkey is insufficient to establish taxbenefit relationship as tariff structure. The purpose of this study is to reveal the inadequacy of the current ST system applied in houses and to establish a link between sanitation tax and solid waste within the scope of benefit principle. For this purpose household solid waste was evaluated in the context of benefit principle afterthat, some country examples and ST applied in Turkey were analyzed. In this study, it is determined that the ST is not based on the benefit principle and various suggestions are made in this context.
AtıfTR Dizin6İncele