64 research outputs found
Further properties of Azimi-Hagler Banach spaces
No full textsummary:For the Azimi-Hagler spaces more geometric and topological properties are investigated. Any constructed space is denoted by . We show \item {(i)} The subspace generated by a subsequence of is complemented. \item {(ii)} The identity operator from to when is unbounded. \item {(iii)} Every bounded linear operator on some subspace of is compact. It is known that if any is a dual space, then \item {(iv)} duals of spaces contain isometric copies of and their preduals contain asymptotically isometric copies of . \item {(v)} We investigate the properties of the operators from spaces to their predual
Theory and design of integrated plasmonic slot waveguides for infrared absorption sensing
No full textAuthor MSc. Parviz SaeidiDissertation Johannes Kepler Universität Linz 202
Application of the dry-spinning method to produce poly(epsilon caprolactone) fibers containing bovine serum albumin laden gelatin nanoparticles
No full textWe designed and manufactured a polymeric system with combined hydrophilic–hydrophobic properties by loading gelatin
nanoparticles (GNPs) containing bovine serum albumin (BSA) into poly(e-caprolactone) (PCL) fibers. Our ultimate goal was to create a device capable of carrying and releasing protein drugs. Such a system could find several biomedical applications, such as those in controlled release systems, surgical sutures, and bioactive scaffolds for tissue engineering. A two-step desolvation method was used to produce GNPs, whereas PCL fibers were produced by a dry-spinning method. The morphological, mechanical, and thermal properties of the produced system were investigated, and the distribution of nanoparticles both inside and on the surface of the fibers was examined. The effect of the particles on the biodegradability of the fibers was also evaluated. In vitro preliminary tests were performed to study the release of
BSA from nanoparticle-laden fibers and to compare this with its release from free nanoparticles. Our results indicate that the distribution of particles inside the fibers was quite homogeneous and only a few of them were present on the surface. The presence of the particles in the fibers did not affect the thermal properties of the PCL polymer matrix, although it created voids that affected the degradation characteristics so the PCL fibers favored faster erosion compared to the plain fibers. Preliminary results indicate that the release from GNP-laden fibers occurred much more slowly compared to that in the free GNPs
Application of response surface methodology to evaluate the effect of dry-spinning parameters on poly (ε-caprolactone) fiber properties
No full textPoly (ε-caprolactone) fibers were prepared by dry-spinning method. The effect of processing parameters on linear density, mechanical, and morphological properties of fibers was investigated using the response surface methodology (RSM). This method allowed evaluating a quantitative relationship between polymer concentrations, spinning speed, and draw ratio on the properties of the fibers. Polynomial regression model was fitted to the experimental data to generate predicted response. The results were subjected to analysis of variance to determine significant parameters. It was found that all three parameters had significant effect on linear density of fibers. Combined effect of concentration and spinning speed was observed in which the linear density of fiber was more sensitive to changes in the solution concentration at lower spinning speed. Polymer concentration had the largest influence on the mechanical properties of fibers. An average cross-sectional radius of fibers was affected by concentration and draw ratio in opposite manner. Among all three parameters, only polymer concentration had significant effect on circularity of fiber cross sections. By applying the RSM, it was possible to obtain a mathematical model that can be used to better define processing parameters to fabricate dry-spun PCL fiber in a more rational manner
“Oxu strategiyası” fənni üzrə inteqrativ dərslər
No full textOn December 13, 2023, integrative classes were conducted by inviting guest speakers on the subject "Reading strategy" lectured by the faculty member of the Department of Languages and Literatures, PhD in Philology Sevinj Gambarova. Director of "Khan" publishing house, writer Sabuhi Shahmursoy, author of the book "Collector" Elay, director of "Simurg" publishing house, writer Amin Orujov and author of "Behind the Letters", poet and screenwriter Parviz Seyidli participated in the classes as guests
A COMPREHENSIVE ANALYTICAL MODEL FOR PNEUMATIC TIRES
No full textRights Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author. Downloaded 13-May-2016 02:28:16 Link to ite
Разработка концепции охранных систем порогового принципа действия на основе биосенсора сейсмологического типа
No full textThe author carried out the scientific rationale for the method with the biosensor. The author performed a comparative analysis of analogues, standards and solving problems on the materialsНастоящая работа посвящена разработке воспроизводимого макета биодатчика порогового принципа действия в нормальных климатических условиях. Исследователи из университета Вашингтона (University of Washington) впервые запитали от такого необычного источника электронную микросхему Бабак Парвиц (Babak Parviz, https://www.ece.uw.edu/faculty/parviz_babak, 2009 г.). Автором проведена симуляция ПД в Прикладном ПО «С. Orcad», «NI Multisim», а также прорабатывается схемотехника в модулях Прикладного ПО «С. Orcad», «NI Multisim». В экспериментальной части автором впервые испытана плата на макете (макетка) в лаборатории на модельном объекте Молочай гребенчатый Euphorbia lophogona Lam
High-prevalence and high-estimated incidence of HIV infection among new injecting drug users in Estonia: need for large scale prevention programs.
No full textOBJECTIVE: To examine HIV risk behavior and HIV infection among new injectors in Tallinn, Estonia. Design and methods Data from two cross-sectional surveys of injecting drug users (IDUs) recruited from a syringe exchange program (N = 162, Study 1) or using respondent driven sampling (N = 350, Study 2). Behavioral surveys were administered; serum samples were collected for HIV testing. Subjects were categorized into new injectors (injecting 3 years). RESULTS: Twenty-eight of 161 (17%, Study 1) and 73/350 (21%, Study 2) of the study subjects were new injectors. HIV infection was substantial among the newer injectors: HIV prevalence was 50% (Study 1) and 34% (Study 2), and estimated HIV incidence 31/100 PY and 21/100 PY, respectively. In Study 2, new injectors were more likely to be female and ethnic Estonian and less likely to be injecting daily compared with long-term injectors. No significant difference was found among two groups on sharing injecting equipment or reported number of sexual partners. CONCLUSIONS: A continuing HIV epidemic among new injectors is of critical public health concern. Interventions to prevent initiation into injecting drug use and scaling up HIV prevention programs for IDUs in Estonia are of utmost importance
From Shahrzad to Carrie Bradshaw: identity negotiation and impression management of an Iranian woman living in the United States
No full textThesis (M.A.)--Wichita State University, Fairmount College of Liberal Arts and Sciences, Elliott School of CommunicationThis thesis is a qualitative autoethnography which analyzes the author's experiences as a female Iranian student in the American Midwest during a 3-year period, between 2014 to 2017. The author takes the readers through the daily challenges she faces adapting to a new culture, describes the transformation process of the beliefs she had previously formed based on exposure to American television, and tells the story of reinventing her identity using the new cultural and political freedom she has gained in the United States. Her epiphanies are analyzed within the framework of Identity Negotiation Theory (INT) and Impression Management Theory (IMT). The author uses her journals as data to provide illustrations of her assumptions, and applies theory to draw insights into her experiences. The narratives are written in the form of plots which include characters, conversations, and an emotional load. This research is a combination of science and art. The author hopes that by reading this work, others who are going through similar experiences can better understand their personal confusions and transformations
The Iranian space endeavor: ambitions and reality
No full textFor those who see the trend of progress and movement of the Iranian space endeavor from the outside, it can be difficult to understand what goes on behind the scenes. However, for one who observes these events firsthand, they take on a very different meaning. In this book, the author brings new and different profiles of Iran’s space endeavor to light. Iran claims to be the ninth leading country in the world capable of manufacturing satellites and launching them, plans to land an astronaut on the Moon within a decade, and says its own president plans to be the first Iranian astronaut to travel into space. The author explains in this book that not all of these claims are quite as they seem. In addition to technical explanations, the book also includes historical, legal, social and cultural aspects of Iran’s space program as well. It is the author’s goal to create a tangible feeling of Iran’s space endeavor for the readers
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