150 research outputs found
Vocabulary in poet-author Nuri Pakdil in the works of the essasy type
No full textSosyal Bilimler Enstitüsü, Türk Dili ve Edebiyatı Ana Bilim Dalı, Yeni Türk Dili Bilim DalıDilimizdeki sözcüklere cümle içinde kullanım şekline göre çok çeşitli anlamlar yüklenebilmektedir. Bu nedenle bir dildeki sözcüklerin sayısının tespiti kadar kelimelerin çok anlamlılığının tespiti de o dilin zenginliğini ortaya koymada gereklidir. Kelimeleri işleyen, onlara yeni anlatım olanakları sağlayanlar ise şair ve yazarlardır. Nuri Pakdil, kendine has üslubu ve sözcük tercihleriyle oldukça dikkate değer bir yazardır. Hakkında yazılı ve görsel alanda pek çok çalışma yapılmakla birlikte eserleri üzerine söz varlığı açısından bir çalışma yapılmamıştır. Çalışmada Nuri Pakdil'in deneme türündeki eserlerinde yer alan söz varlığının ortaya koyulması amaçlanmıştır. Eserlerin bir bölümü deneme/günlük tarzında olduğundan yazarın yaşamına ait bilgiler de içermektedir. Benzer şekilde eserlerin düşünce yazısı olması sebebiyle yazarın dünya görüşü ile edebî ve fikri eleştirileri de bu eserlerde görülmektedir. Yazarın hayatı, edebi şahsiyeti ve eserleri hakkında bilgi verildikten sonra sözcük ve söz varlığı kavramlarına değinilerek, incelenen eserlerde kullanılan dil, temel söz varlığı bağlamında değerlendirilmeye çalışılmıştır. Çalışmada, eserlerdeki kelimelerin kullanım sıklıklarının tasnifi yapılmıştır. Ayrıca incelenen eserlerin dizinleri de toplu olarak çalışmada yer almaktadır.ABSTRACT The words in our language can be loaded with a variety of meanings according to the usage in the sentence. For this reason, the determination of the number of words in a language as well as the determination of the meaning of words is necessary to reveal the richness of the language. Poet sand writers are the ones who process the word sand provide them with new narrative opportunities. Nuri Pakdil is a remarkable writer with her uniquestyle and vocabulary choices. Although there are many written and visual studies about it, there has not been any study in his vocabulary. Nuri Pakdil, who is a very important man of ideas besides the writer-poet-translatoridentity, is very interesting. In our study, it was a imed to reveal the vocabulary of Nuri Pakdil in his essay types. Since some of the worksare in a trial / daystyle, they also contain information about the life of the author. Similarly, the author's world view and his literary and intellectual criticism can be seen due to the fact that the worksare thought texts. After informing the author about the word and vocabulary in the general framework, the language used in the works examined has been tried to be evaluated in the context of the basic vocabulary. The frequency of use of the words in the Works were classified. In addition, the directories of the studied works are also included in our study
Decrement in metastability with Zr nanoparticles inserted in Bi-2223 superconducting system and working principle of hybridization mechanism
No full textThis exhaustive study experimentally deals with the role of Zr foreign impurities on the electrical, superconducting and flux pinning properties of the bulk Bi-2223 superconducting compounds by the typical experimental characterization methods such as dc resistivity (rho-T), transport critical current density (J (c) ) and powder X-ray diffraction (XRD) surveys. All the experimental findings show that the curial characteristics, being in charge of the varied attractive and feasible applications, retrograde significantly with the enhancement of the Zr nanoparticles in the Bi-2223 superconducting system due to the presence of two trap levels for mobile holes. This leads to the degradation of the metastability of the superconducting materials. In more detail, based on the dc resistivity and transport critical current density measurements, the Zr additives give rise to the localization problem as a consequence of the change in the dynamics of electron-electron interaction. Thus, the room state conductivity, , and J (c) values retrograde significantly. Similarly, the Zr foreign impurities embedded in the Bi-2223 crystal lattice make the artificial random defects, dislocations and grain boundary weak-interactions in the consecutively stacked layers enhance immediately, and the superconducting Cu-O-2 layers distort especially. Moreover, the XRD investigations including the evidences about the decrement/increment in the c-axis/a-axis length verify the regression of the superconducting properties with the Zr dopant. The main differentiation of the lattice constant parameters stems from aliovalent substitutions (replacement of the divalent Cu by the tetravalent Zr impurties) along with the crystal structure. In other words, the reduction of the electronegativity leads to decrease the mobile hole concentration in the Cu-O-2 consecutively stacked layers. Furthermore, all the decrement parameters are theoretically favored by hybridization mechanism.https://doi.org/10.1007/s10854-015-3839-
Nuri Pakdil’de Protest Tavır
Get PDFNuri Pakdil son dönem Türk edebiyatında İslami kesimi temsil eden
şairlerdendir ve bugüne kadar; şairliği, yayıncılığı ve dergiciliğiyle edebiyat
dünyasında önemli bir yeri olmuştur. Buna rağmen eser verdiği dönemin siyasi ve
sosyal şartları nedeniyle adını yalnızca hitap ettiği sınırlı bir kesime duyurmuştur.
Bunda Pakdil’in şahsi tercihleri ve yönelimleri ile, ilkesel tavrı önemli rol
oynamıştır.
İslami hassasiyetli Türk edebiyatının yapı taşlarından biri olan Pakdil’in
eserleri; protest ve muhalif tavır bağlamında tezimizin konusunu oluşturmaktadır.
Nuri Pakdil üzerine yazılan sınırlı sayıdaki incelemeye eklediğimiz tezimiz, güncel
edebiyatta ve sanatta çokça tartışılan fakat yine az işlenen protest tavır konusunda da
geniş bir çalışmayı ihtiva etmektedir.Nuri Pakdil is a poet who represents the Islamic strain of the later period of Turkish
literature, and to this day, his poetry, publishing work, and contributions to journals
and magazines in the field of literature all hold an important place. Despite this, due
to the political and social circumstances of the period in which he wrote, only a
limited audience has been exposed to his work. Pakdil’s personal preferences and
inclinations have played a primary role in this regard as well.
Pakdil’s works form one of the foundations of Islamically-oriented Turkish
literature, and his attitude of protest and opposition forms the subject of our
thesis. To the limited studies dealing with Nuri Pakdil, our thesis examines in a
wide-ranging manner his attitude of protest that is so controversial yet poorly-studied
in contemporary literature and art toda
Solubility limit of tetravalent Zr nanoparticles in Bi-2223 crystal lattice and evaluation of fundamental characteristic properties of new system
No full textIn this comprehensive work, we focus sensitively on the changes of microstructural, electrical, superconducting and mechanical properties belonging to the bulk Bi1.7Pb0.4Sr2.0Ca2.0ZrxCu3.1Oy materials with the different Zr nanoparticles (0 a currency sign x a currency sign 1.0) inserted in the superconducting matrix. The characterizations of the materials prepared are experimentally performed by bulk density, dc resistivity (rho-T), X-ray powder diffraction (XRD), scanning electron microscopy (SEM), electron dispersive X-ray (EDX) and Vickers microhardness (H (v) ) investigations. It is found that all the characteristics given above (especially superconducting properties) degrade considerably with the increment in the Zr addition level, and in fact they reach to the global minimum points in case of the maximum dopant level. The main reason of the rapid decrement in the electrical and superconducting properties stems from the presence of the localization problem in the Cu-O-2 consecutively stacked layers. Likewise, the Zr foreign addition increases the artificial random defects, dislocations and grain boundary weak-links in the superconducting system, even being favored by the SEM examinations. At the same time, the EDX surveys indicate that the Zr nanoparticles in the tetravalent state prefer to substitute for the divalent states of the Cu inclusions through the crystal structure as a result of their close ionic radius values (86 pm for Zr4+ ion and 87 pm for Cu2+ ion). Thus, the differentiation of the electronegativity reduces the mobile hole concentration in the Cu-O-2 slabs. Additionally, the XRD experimental findings show that there is a systematic decrement in the Bi-2223 (high) phase up to the Zr concentration level of x = 0.70 beyond which new characteristics peaks of ZrO2 appear immediately. This is in relation to the fact that the solubility limit corresponding to the Zr foreign impurity in the Bi-2223 system is about x = 0.70. Similarly, the regular decrement in both the c-axis length and crystallite size with the dopant confirms the deterioration of the superconducting properties. Furthermore, the dramatic reduction of the H (v) values stems from the suppression of the crystallinity and connection quality in the intergrain coupling of the superconducting samples exhibiting typical Indentation Size Effect behavior due to the existence of both elastic and plastic deformations in the system
Mechanical and Fatigue Behavior of Resistance Spot Welded Dual-Phase and Twinning-Induced Plasticity Steel Joints
No full textThe authors gratefully acknowledge the technical support provided by Tofas-Fiat R&D department.The new generation high-strength steel sheet has been widely used to reduce the vehicle weight. In this study, the mechanical, metallurgical, and fatigue behavior of the resistance spot-welded joints of high strength steel sheets were experimentally investigated. The Dual-Phase (DP) 800 and Twinning-Induced Plasticity (TWIP) 1000 steel sheets were joined together in three different nugget diameters. The welding current was parameterized to create three different nugget diameters. Hence, four groups of welded combining combinations were obtained. The tensile shear test was applied to the samples to study the effects of weld nugget diameter and different welded joint combination in terms of the joint strength. For long fatigue life tests, six test samples were prepared for each test series; in total, 24 tests have been conducted, in which S-N curves of the samples were extracted. Finally, the effect of different nugget diameters on the fatigue life of the welded joint combinations was investigated. © 2022 American Society of Civil Engineers
Evaluation of parameters which effect phosphorus release by using Box-Wilson experimental design method
Get PDFSon yıllarda, fosfor doğal rezervlerinin hızla tükenmesi nedeniyle birçok endüstriyel sektör için ana ham madde kaynağı olan fosforun atıksu ve arıtma çamurlarından geri kazanılmasına yönelik yapılan araştırmalar önem kazanmıştır. Arıtma çamuru ve çamur küllerinden fosfor geri kazanımı için; çamur bünyesinden salınması ve sıvı ortama alınan salınmış fosforun geri kazanılması olarak iki aşamalı yöntem izlenmektedir. Atıksu ve arıtma çamuru bünyesinden fosforun salınması amacıyla çeşitli kimyasal ve ısıl işlemler kullanılmaktadır. Bu çalışmada, arıtma çamuru bünyesinde bağlı olan fosforun salınması için asidik işlem uygulanmış; bu amaçla inorganik bir asit olan nitrik asit ve organik bir asit olan oksalik asit kullanılmıştır. Fosfor salınması üzerinde karıştırma sıcaklığı, karıştırma zamanı ve asidin konsantrasyon değeri gibi parametrelerin etkileri araştırılmıştır. Sonuçların değerlendirilmesi için Box-Wilson deneysel tasarım metodu uygulanarak salınan fosfor miktarı için hesaplanan değerler ile deneysel olarak ölçülmüş değerler arasında uyum olduğu belirlenmiştir. R2 değeri nitrik asit için 0.995, oksalik asit için 0.853 olarak bulunmuştur. Değerlendirme sonuçlarına göre; fosfor salınmasında nitrik asitin oksalik aside göre daha etkili bir kimyasal olduğu belirlenmiştir. Nitrik asitle yapılan çalışmalarda, konsantrasyon ve karıştırma zamanına göre sıcaklığın fosfor salınması miktarını önemli ölçüde arttırdığı gözlenmiştir. Oksalik asitle yapılan çalışmalarda nitrik asitle yapılan çalışmalarda olduğu gibi sıcaklığın daha etkili bir parametre olduğu gözlenmiştir. En yüksek fosfor salınım miktarı, nitrik asitle çalışıldığında 100ºC karıştırma sıcaklığı, 4 M konsantrasyonda ve 97.5 dakika karıştırma süresi kullanılarak; oksalik asitle yapılan çalışmalarda ise 100ºC karıştırma sıcaklığında, 2 M konsantrasyonda ve 97.5 dakika karıştırma süresi ile elde edilebileceği belirlenmiştir. Anahtar Kelimeler: Fosfor salınması, nitrik asit, oksalik asit, Box-Wilson deneysel tasarım metodu.The usual forms of phosphorus found in aqueous solutions include the orthophosphate, polyphosphate, and organic phosphate (Metcalf & Eddy, 1991). Wastewater discharges of nitrogen and phosphorus to the environment are undesirable because these nutrients accelerate eutrophication (Lee et al., 2003). Therefore, various phosphorus removal technologies have been developed like chemical precipitation, biological phosphorus removal, ion exchange (Morse et al., 1998).Steen (1998) has pointed out that the annual global production of phosphate is around some 40 million tones of P2O5, derived from roughly 140 million tons of rock concentrate by the year 1998. In addition, World fertilizer use would reach 60-70 million t/a of phosphates by 2050. It is concluded that global phosphate resources extend, for all intents and purposes, well into the future, but that depletion of current economically exploitable reserves can be estimated at somewhere from 60 to 130 years (Steen, 1998). Phosphrus recovery from sewage sludge and sludge ash are applied at two steps. These are phosphorus release from sludge and recovery of released phosphorus from phosphrus-enriched liquid phase. In this study, nitric acid (inorganic acid) and oxalic acid (organic acid) were utilized in order to release the phosphorus fixed in the sewage sludge. The effects of parameters which determine the efficiency of mixture temperature, mixing time and acid concentration on the phosphorus release were investigated. For the analysis of the results, Box-Wilson Experimental Design Method has been used. Sludge samples taken from belt press stages of Çiğli municipal wastewater treatment plant were dried at 103ºC in oven. Chemical composition of dried sludge was determined using X-ray diffraction analysis (XRD-Rigaku). Dried sludge samples were leached with nitric acid and oxalic acid), by applying different concentrations, various mixture temperatures, and various mixing times which were adjusted to desired levels specified by the Box–Wilson Experimental Design Method. Magnetic stirrer/hot plate and electronic temperature controller with stainless steel temperature sensor were used for the leaching process. Leachate solution with different concentrations was added to the dried sludge samples and mixed for various time periods at 300 rpm. Ratio of dried sludge (g)/ solution volume (ml) was chosen as 1/50. The concentration of phosphate in the leachate was analyzed using Stannous Chloride Method; 4500-P D according to Standard Methods (APHA, 2005). All leaching stages are repeated twice for each experimental step. Box–Wilson Experimental Design Method was used to determine the effects of parameters, such as mixture temperature (X1) solution concentration (X2) and mixing time (X3) on phosphorus release from dried sludge. Solution concentration varied between 0.1- 4 M for nitric acid and 0.1-2 M for oxalic acid. In addition, mixing time was between 15-180 min and mixture temperature was in the range at 20ºC and 100ºC. The experiments consisted of six axial (A), eight factorial (F) and one centre (C) points. The centre point was repeated three times. The amount of phosphorus release was described by using response function. Statistica 5.0 software program was used to determine, the response function coefficients. The predicted values of phosphorus release amount were in accordance with the observed values. It was found that R-squared values are 0.995, and 0.853 for nitric acid, oxalic acid respectively. Results were evaluated in terms of the effects of concentration-mixing time, temperature-mixing time, and concentration-temperature on phosphorus release from the sludge. The analysis results have shown that nitric acid is more efficient as compared to oxalic acid. In experiments carried out with nitric acid, it has been observed that the increase in nitric acid concentration and mixing time do not significantly affect phosphorus release, while an increase in mixing temperature effects considerably. Experiments conducted using oxalic acid have shown that increasing mixing temperature results increasing phosphorus release, whereas concentration increase and mixing time have no significant effect. The best phosphate release amounts were accomplished, at 4 M concentration, 100ºC mixture temperature, and 97.5 min mixing time for nitric acid. In experiments with oxalic acids, the best phosphate release amounts were accomplished at 2 M concentration, 100ºC mixture temperature, and 97.5 min mixing time. Keywords: Phosphorus release, nitric acid, oxalic acid, Box-Wilson Experimental Design Method
Satellites around Milky Way Analogs: Tension in the Number and Fraction of Quiescent Satellites Seen in Observations versus Simulations
Get PDFWe compare the star-forming properties of satellites around Milky Way (MW) analogs from the Stage II release of the Satellites Around Galactic Analogs Survey (SAGA-ii) to those from the APOSTLE and Auriga cosmological zoom-in simulation suites. We use archival GALEX UV imaging as a star formation indicator for the SAGA-ii sample and derive star formation rates (SFRs) to compare with those from APOSTLE and Auriga. We compare our detection rates from the NUV and FUV bands to the SAGA-ii Hα detections and find that they are broadly consistent with over 85% of observed satellites detected in all three tracers. We apply the same spatial selection criteria used around SAGA-ii hosts to select satellites around the MW-like hosts in APOSTLE and Auriga. We find very good overall agreement in the derived SFRs for the star-forming satellites as well as the number of star-forming satellites per host in observed and simulated samples. However, the number and fraction of quenched satellites in the SAGA-ii sample are significantly lower than those in APOSTLE and Auriga below a stellar mass of M ∗ ∼ 108 M o ̇, even when the SAGA-ii incompleteness and interloper corrections are included. This discrepancy is robust with respect to the resolution of the simulations and persists when alternative star formation tracers are employed. We posit that this disagreement is not readily explained by vagaries in the observed or simulated samples considered here, suggesting a genuine discrepancy that may inform the physics of satellite populations around MW analogs
Microstructural and mechanical characterization of laser beam welded AA6056 Al-alloy
No full textLaser beam welding is considered to be a suitable joining process for high speed, low distortion, and high quality fabrication of aircraft structures manufactured from aluminum alloys, which are mainly preferred due to their favourable properties, such as high strength to weight ratio, ease of forming and high thermal and electrical conductivity. However, the laser beam welding of 6000 series aluminum alloys may exhibit a tendency to solidification cracking, and porosity may be a major problem unless appropriate welding parameters and filler metal are employed
Comparison of mechanical and microstructural behaviour of TIG, MIG and friction stir welded 7075 aluminium alloy
No full textIn this study, 6 mm thick Aluminium Alloy 7075 has been welded using three different welding methods, namely the solid state joining method Friction Stir Welding (FSW), fusion welding methods Tungsten Inert Gas Welding (TIG) and Metal Inert Gas Welding (MIG). Welded joints have been investigated and compared in terms of their microstructures, mechanical behaviour and hardness. Microstructural examination reveals that smaller grain sizes are obtained in the weld centre of FSW, whereas grain growth has been observed in TIG and MIG welds. The results show that among the three welding methods employed, FSW has yielded the best mechanical properties
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