170 research outputs found
Photovoltaic characteristics of Au/n-Si Schottky structure with an interface of polyvinyl alcohol (PVA) thin film doped by erbium oxide (Er2O3) nanoparticles
No full textThis paper investigates the photovoltaic properties of a Schottky photodiode (SPD) with an Au/PVA:Er2O3/n-Si structure under dark and various light intensities. An Er2O3-doped PVA thin film is used as an interlayer in a metal-nanocomposite-semiconductor (MNS) configuration. Techniques like XRD, AFM, UV–Vis, FTIR, and ATR characterize the Er2O3 nanostructure and PVA:Er2O3 composite. Key photovoltaic parameters like leakage current (I0), potential barrier height (ΦB0), ideality factor (n), resistances (Rs/Rsh), density of surface/interface states (Nss), photocurrent (Iph), photosensitivity (S), responsivity (R), and detectivity (D∗) are analyzed. Increased light intensity raises I0 and n values while reducing ΦB0 and Rs. Linear photocurrent behavior is observed in Iph-P graphs at zero bias. The PVA:Er2O3 nanocomposite enhances photosensitivity (1.04 × 104), responsivity (3.89 A/W), and detectivity (3 × 1011 Jones). According to these findings, the Au/PVA:Er2O3/n-Si structure demonstrates a suitable photo-response and might appropriately take the position of conventional MS-type SPDs in photovoltaic and optoelectronic applications
Electronic respond of Au/n-Si Schottky barrier diodes with PVP interlayer doped by Nd2O3 particles
No full textThis study looks at the effects of neodymium oxide (Nd2O3) nanoparticles doped in the polyvinyl pyrrolidone (PVP) thin film that sits between a metal and a semiconductor on the electrical characteristics and conduction mechanism of Schottky Barrier Diodes (SBDs). A microwave-assisted technique is employed to create the Nd2O3 nanostructure. The processed Nd2O3 nanostructure’s mean crystalline scale, surface morphology, pureness, and optical characteristics are ascertained by X-ray diffraction pattern, Field Emission-Scanning Electron Microscopy, Electron-Dispersive X-ray analysis, and ultraviolet–visible spectroscopy, respectively. By measuring the I–V characteristics at ± 3.8 V and comparing them, the Thermionic Emission, modified Norde technique, and Cheung functions are applied for calculating the main electronic variables of prepared SBDs including the ideality coefficient (n), leak current (I0), the height measure of electric potential barrier (ΦB0), shunt (Rsh), and series (Rs) resistances. Additionally, the conduction processes of the electric current in positive and negative biases are examined, as well as the surface/trap states density (Nss) depend on energy at forward bias. It is found that the interfacial layer improves the rectifying ratio by decreasing n, I0, Nss and raising BH, shunt resistance (Rsh). For use in nanoscale electrical and optoelectronic devices and circuits, PVP:Nd2O3 thin film can therefore be a good substitute for an interfacial layer
Influence of Nd2O3-doped PVA interlayer on the optoelectrical response of a photodiode
No full textThis study examines the photovoltaic properties of a Schottky photodiode (PD) based on the Au/PVA:Nd2O3/n-Si structure under various light and dark conditions. A PVA polymer layer doped with Nd2O3 is applied to the metal-semiconductor (MS) interface to form a metal-nanocomposite-semiconductor (MNS) Schottky PD. Characterization of the PVA:Nd2O3 nanocomposite is conducted using Fourier Transform Infrared (FTIR) and Attenuated Total Reflection (ATR) analyses. Key electronic properties such as reverse-saturation current (I0), ideality factor (n), series/shunt resistances (Rs/Rsh), barrier height (ΦB0), interface state density (Nss), photocurrent (Iph), photosensitivity (S), optical responsivity (R), and specific detectivity (D*) are analyzed. The nanocomposite enhances photosensitivity, responsivity, and detectivity by 1.7 × 104, 4.79 A W−1, and 1.07 × 1012 Jones, respectively. Results demonstrate that the Au/PVA:Nd2O3/n-Si structure exhibits excellent photo-response, making it a potential replacement for traditional MS-type Schottky PDs in optoelectronics and solar applications
Matriks metalloproteinaz 9 ve 12 ile mareiks metalloproteineaz doku inhibitörü-1 ekspresyonlarının endometriyozisli dokularda immunohistokimyasal olarak gösterilmesi
No full textBu çalışmada matriks metalloproteinaz 9 ve 12 ile mareiks metalloproteineaz doku inhibitörü-1 ekspresyonlarının endometriyozisli dokularda immunohistokimyasal olarak gösterilmesi amaçlanmıştır
Análisis comparativo de dos historias de amor: los amantes de Teruel y Ferhat i̇le Şi̇ri̇n de la tradicion oral a la literatura
No full textLa presente tesis doctoral es un estudio comparativo de dos leyendas de distintas culturas: «Los Amantes de Teruel» de España y «Ferhat ile Şirin» de Turquía. Es el primer estudio que contiene el análisis de una leyenda española con un relato turco desde un punto de vista comparativo utilizando una bibliografía amplia de los importantes estudiosos de España, Turquía y de todo el mundo.
El estudio consta de dos partes. La primera parte contiene el análisis de los dos relatos en la tradición oral. En el primer capítulo se analiza la distinción entre los géneros folclóricos que pertenecen las dos historias: la leyenda y halk hikayesi. En el segundo capítulo se centran en los orígenes de «Los Amantes de Teruel» y su evolución en la cultura oral del país, analizando la estructura y los motivos folclóricos que contiene el primer testimonio oral del relato en España, el papel escrito de letra antigua de Yagüe de Salas. En el tercer capítulo se dedica a los orígenes del relato turco y al análisis comparativo de sus cinco versiones en la tradición oral turca teniendo en cuenta la estructura que se proporciona por el investigador turco del folclore, Pertev Naili Boratav y los motivos folclóricos de Antti Aarne. En el último capítulo de la primera parte se hace un análisis comparativo de la estructura y los motivos folclóricos de los primeros testimonios de las historias española y turca.
La segunda parte consta de sus versiones más exitosos en la literatura de dos países: Los amantes de Teruel de Juan Eugenio Hartzenbusch y Ferhat ile Şirin de Nazım Hikmet. En el primer capítulo se dedica a la vida y la época de Hartzenbusch y la comparación de las dos versiones de la obra; una escrita en 1839, el primer manuscrito y la otra de 1849. Así se ve tanto la evolución de la leyenda en la literatura y también la evolución del drama y el dramaturgo en el siglo XIX. En el segundo capítulo consta de la vida y época de Nazım Hikmet que cultiva su obra dentro del movimiento realismo social y se considera como uno de los autores de la literatura turca más conocidos mundialmente. Para hacer el análisis, escogimos la primera publicación de Ferhat ile Şirin y lo comparamos con su versión en castellano Leyenda de amor, que se traduce bajo el dominio del mismo autor. Así se ven los cambios a la hora de traducir la obra a otro idioma. Tambien se ven la evolución de la leyenda dentro de la literatura.This present thesis contains a comparative study of two legends of different cultures: "The Lovers of Teruel" in Spain and "Ferhat and Şirin" in Turkey. It is the first study that elaborates the analysis of a Spanish legend with a Turkish story from a comparative point of view using a large bibliography of leading scholars from Spain, Turkey and the entire world.
The study consists of two parts. The first part contains the analysis of the two stories in the oral tradition. In the first chapter analyses the diferences between the folk genders that belong two stories: the legend and halk hikayesi. The second chapter focuses on the origins of "The Lovers of Teruel" and its evolution in the oral culture of the country, analyzing the structure and folk motifs taht contains the first oral testimony of the story in Spain taht is written by notarial Yagüe de Salas. The third chapter is dedicated to the origins of the Turkish story and the comparative analysis of the structure of Pertev Naili Boratav and folk motifs of Antti Aarne of the five versions in Turkish oral tradition. The last chapter contains the comparative analysis of the structure and the folk motifs of the first testimonies of the Spanish and Turkish stories.
The second part consists of its most successful versions in the literature of two countries: The Lovers of Teruel of Juan Eugenio Hartzenbusch and Ferhat ile Şirin of Nazım Hikmet. The first chapter is dedicated to the life and the century of Hartzenbusch and the comparison of the two versions of the book; one is written in 1839, the first manuscript and the other in 1849. Wıth thıs study we see the evolution of the legend in literature and also the evolution of the drama in the 19th century. The second chapter consists of the life and era of Nazım Hikmet who cultivated his work within the social realism movement and is regarded as one of the authors of Turkish literature more known ın world. We chose the first publication of Ferhat ile Şirin and compare it with the version in Spanish Legend of Love, translated under the control of the same author. So we compare the diferences between the original text and the translation one and also the evolution of the legend in literature
Análisis comparativo de dos historias de amor : los amantes de Teruel y Ferhat i̇le Şi̇ri̇n : de la tradición oral a la literatura
No full textLa presente tesis doctoral es un estudio comparativo de dos leyendas de distintas culturas: «Los Amantes de Teruel» de España y «Ferhat ile Şirin» de Turquía. Es el primer estudio que contiene el análisis de una leyenda española con un relato turco desde un punto de vista comparativo utilizando una bibliografía amplia de los importantes estudiosos de España, Turquía y de todo el mundo. El estudio consta de dos partes. La primera parte contiene el análisis de los dos relatos en la tradición oral. En el primer capítulo se analiza la distinción entre los géneros folclóricos que pertenecen las dos historias: la leyenda y halk hikayesi. En el segundo capítulo se centran en los orígenes de «Los Amantes de Teruel» y su evolución en la cultura oral del país, analizando la estructura y los motivos folclóricos que contiene el primer testimonio oral del relato en España, el papel escrito de letra antigua de Yagüe de Salas. En el tercer capítulo se dedica a los orígenes del relato turco y al análisis comparativo de sus cinco versiones en la tradición oral turca teniendo en cuenta la estructura que se proporciona por el investigador turco del folclore, Pertev Naili Boratav y los motivos folclóricos de Antti Aarne. En el último capítulo de la primera parte se hace un análisis comparativo de la estructura y los motivos folclóricos de los primeros testimonios de las historias española y turca. La segunda parte consta de sus versiones más exitosos en la literatura de dos países: Los amantes de Teruel de Juan Eugenio Hartzenbusch y Ferhat ile Şirin de Nazım Hikmet. En el primer capítulo se dedica a la vida y la época de Hartzenbusch y la comparación de las dos versiones de la obra; una escrita en 1839, el primer manuscrito y la otra de 1849. Así se ve tanto la evolución de la leyenda en la literatura y también la evolución del drama y el dramaturgo en el siglo XIX. En el segundo capítulo consta de la vida y época de Nazım Hikmet que cultiva su obra dentro del movimiento realismo social y se considera como uno de los autores de la literatura turca más conocidos mundialmente. Para hacer el análisis, escogimos la primera publicación de Ferhat ile Şirin y lo comparamos con su versión en castellano Leyenda de amor, que se traduce bajo el dominio del mismo autor. Así se ven los cambios a la hora de traducir la obra a otro idioma. Tambien se ven la evolución de la leyenda dentro de la literatura.This present thesis contains a comparative study of two legends of different cultures: "The Lovers of Teruel" in Spain and "Ferhat and Şirin" in Turkey. It is the first study that elaborates the analysis of a Spanish legend with a Turkish story from a comparative point of view using a large bibliography of leading scholars from Spain, Turkey and the entire world. The study consists of two parts. The first part contains the analysis of the two stories in the oral tradition. In the first chapter analyses the diferences between the folk genders that belong two stories: the legend and halk hikayesi. The second chapter focuses on the origins of "The Lovers of Teruel" and its evolution in the oral culture of the country, analyzing the structure and folk motifs taht contains the first oral testimony of the story in Spain taht is written by notarial Yagüe de Salas. The third chapter is dedicated to the origins of the Turkish story and the comparative analysis of the structure of Pertev Naili Boratav and folk motifs of Antti Aarne of the five versions in Turkish oral tradition. The last chapter contains the comparative analysis of the structure and the folk motifs of the first testimonies of the Spanish and Turkish stories. The second part consists of its most successful versions in the literature of two countries: The Lovers of Teruel of Juan Eugenio Hartzenbusch and Ferhat ile Şirin of Nazım Hikmet. The first chapter is dedicated to the life and the century of Hartzenbusch and the comparison of the two versions of the book; one is written in 1839, the first manuscript and the other in 1849. Wıth thıs study we see the evolution of the legend in literature and also the evolution of the drama in the 19th century. The second chapter consists of the life and era of Nazım Hikmet who cultivated his work within the social realism movement and is regarded as one of the authors of Turkish literature more known ın world. We chose the first publication of Ferhat ile Şirin and compare it with the version in Spanish Legend of Love, translated under the control of the same author. So we compare the diferences between the original text and the translation one and also the evolution of the legend in literature
Seed morphology and its systematic implications for genus Oxytropis DC. (Fabaceae)
No full textWOS: 000367792300007In the present study, seeds of 13 Oxytropis DC. species (including two latest synonyms) classified in subg. Oxytropis (sect. Dolichocarpon, sect. Chrysantha and sect. Eumorpha), subg. Euoxytropis (sect. Orobia) and subg. Phacoxytropis (sect. Protoxytropis, sect. Janthina and sect. Mesogaea) from Turkey were examined using light and scanning electron microscopy to evaluate the taxonomic relevance of macro- and micro-morphological seed characters. As a result of the study, species-specific characters have been determined. Seeds exhibit variation in size, shape, surface sculpturing pattern, hilum position and weight. Seeds ranged from 1.61 to 4.04mm in length and from 1.02 to 2.56mm in width. Five different seed shapes were recognised, as prolonged semielliptic, reniform, prolonged reniform, quadratic and cardiform, with a length to width ratio ranging from 1.02 +/- 0.08 to 1.75 +/- 0.27. Rugulate, rugulate-reticulate and lophate sculpturing patterns were observed in the studied species. According to the results, seed characters, such as the size (length, width and the length/width ratio), the shape, the surface sculpturing and the weight appear to have low taxonomic value in distinguishing subgenera, sections and species.Scientific and Technical Research Council of Turkey (TUBITAK) [TBAG-105 T 180]We thank all the curators of herbaria (AEF, ANK, B, E, EGE, G, GAZI, GB, HUB, LE, VANF) which first author visited for their kind permission to work and The Scientific and Technical Research Council of Turkey (TUBITAK) for financial support (Project No: TBAG-105 T 180). Comments by anonymous reviewers and editors improved the manuscript
Strategies of Enunciative Erasure and Position Taken by the Author-Researcher Case of Doctoral Student Articles
No full textThe main purpose of this article is to examine the construction of authorship in scientific articles written by Algerian doctoral students. We focused on the personal subject pronouns (nous and on) as the main mark of the expression of subjectivity, trying to see how the identity of the author is constituted in the texts of these young researchers. The observations indicates tyhat,dispite the requirement of objectvity that caracterireres the discursive genre in research,the writings of doctotoral studients continue to include markers of the first person. This usage diffes from that found in common dicoure, suggesting a particular construction of authorial identityLe propos principal de ce présent article est d’examiner la construction de l’identité d’auteur dans les articles scientifiques écrits par des doctorants algériens.Nous nous sommes concentrées sur les pronoms personnels sujets (nous et on) comme la principale marque de l’expression de la subjectivité, en essayant de voir comment se constitue l’identité de l’auteur dans les textes de ces jeunes chercheurs. Les observations indiquent que, malgré l’exigence de l’objectivité qui caractérise le genre discursif en recherche, les écrits des doctorants continuent s’inclurent des marques de la première personne. Cet emploi se différencie de celui que l’on trouve dans le discours commun,ce qui indique une construction particulière de l’identité auctorial
Home of Beirut: Social Housing in Beirut City Centre
No full textThis thesis focusses on social housing oppurtunities in the urban city centre of Beirut after the explosion of the Harbour of August 2020. The focus of the paper is aimed at the lower and middle class Beirutis and aimes to connect different fragments of the city centre.Architecture, Urbanism and Building Sciences | Complex Project
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