1,786 research outputs found
Effect of blade curvature on the hemolytic and hydraulic characteristics of a centrifugal blood pump
No full textAims: Impeller design has a significant impact on the overall performance of a blood pump. In this study, the effect of the blade curvature was investigated by performing in silico and in vitro studies on a recently developed centrifugal blood pump. Methods: A computational fluid dynamics study was performed for the flow rates of 3-5 L/min at 2000 r/min. The computational fluid dynamics model was also applied on the US Food and Drug Administration (FDA) benchmark blood pump to validate our computational method. The relative hemolysis index was calculated with the Eulerian hemolysis estimation method for five impellers with the wrap angles ranging from 0° to 240°. Hydraulic experiments were conducted for the validation of computational fluid dynamics results. In addition, the curved-blade impeller (120°) and the straight-blade impeller (0°) were evaluated with in vitro hemolysis tests using human blood. Results: The wrap angle of 120° provided the best hydraulic and hemolytic performance. Pump achieved the physiologic operating pressures and flows with 85-115 mmHg at 2.5-5.9 L/min. Compared to the straight-blade impeller, the 120° model reduces the relative hemolysis index and the plasma-free hemoglobin near 72.8% and 56.7%, respectively. Comparison of in silico and in vitro results indicated the similar trend to the blade curvature. Conclusion: Introducing a blade curvature enhanced the hydrodynamic and hemolytic performance compared to the straight-blade configuration for the investigated centrifugal blood pump. The findings of this study provide new insights into centrifugal blood pump design by examining the influence of the blade curvature.</p
Numerical investigation of volute tongue design on hemodynamic characteristics and hemolysis of the centrifugal blood pump
No full textIn the design of rotary blood pumps, the optimization of design parameters plays an essential role in enhancing the hydrodynamic performance and hemocompatibility. This study investigates the influence of the volute tongue angle as a volute geometric parameter on the hemodynamic characteristics of a blood pump. A numerical investigation on five different versions of volute designs is carried out by utilizing a computational fluid dynamics (CFD) software ANSYS-FLUENT. The effect of volute tongue angle is evaluated regarding the hydrodynamic performance, circumferential pressure distribution, the radial force, and the blood damage potential. A series of volute configurations are constructed with a fixed radial gap (5%), but varying tongue angles ranging from 10 to 50°. The relative hemolysis is assessed with the Eulerian based empirical power-law blood damage model. The pressure-flow rate characteristics of the volute designs at a range of rotational speeds are obtained from the experimental measurements by using the blood analog fluid. The results indicate an inverse relationship between hydraulic performance and the tongue angle; at higher tongue angles, a decrease in performance was observed. However, a higher tongue angle improves the net radial force acting on the impeller. The pump achieves the optimized performance at 20° of the tongue angle with the relatively high hydrodynamic performance and minor blood damage risk.</p
From Albania to Brazil: Ismail Kadaré's Broken april and its filmic adaptation, Walter Salles' Abril despedaçado
No full textDissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Comunicação e Expressão, Programa de Pós-Graduação em Letras/Inglês e Literatura Correspondente, Florianópolis, 2007The aim of the present study is to analyse how issues of Albanian national identity are portrayed in Ismail Kadaré's novel Broken April (Prilli i Thyer), and how such features have been appropriated and translated onto the screen into a Northeastern Brazilian context. I depart from the premise that, even though Brazilian elements are indeed shown in the film, the non existence of the Kanun in Brazil, and the use of narrative techniques different from the ones employed in the novel render the story of the blood feuds in the film more universal than the genuinely Albanian reality depicted in the novel. In sum, the appropriation transcends the Albanian reality into a universal context, showing, at the same time, elements which are typical of the Brazilian culture.O objetivo do presente estudo é analisar como questões sobre a identidade nacional Albanesa são retratadas no romance Abril Despedaçado (Prilli i Thyer), de Ismail Kadaré, e como tais questões foram apropriadas e traduzidas para a tela num contexto Nordestino-Brasileiro. O estudo parte do princípio que, embora elementos tipicamente Brasileiros sejam mostrados no filme, a não existência do Kanun no Brasil, e o uso de técnicas narrativas diferentes das empregadas no romance ajudam a deixar a história das brigas de família no filme com um aspecto mais universal do que a realidade genuinamente Albanesa representada na romance. Em suma, a apropriação transcende a realidade Albanesa para um contexto mais universal, sem deixar de mostrar também elementos típicos da cultura Brasileira
A novel approach to tube design via von Mises probability distribution
No full textDischarge tube is a critical component in a reciprocating compressor that carries the refrigerant. It also transmits vibrations from compressor body to housing, making the design of tube a complex engineering problem combining static, modal and flow behaviour. This study proposes a novel design algorithm for discharge tube, to decrease the dependency on the trial-and-error approach commonly used by manufacturers. The computational approach creates a tube that connects the inlet and outlet using von Mises probability distribution. The created geometries are checked for static and dynamic properties using FEA. The algorithm continues until a candidate design passes the imposed thresholds. The candidate designs perform similarly to benchmark in evaluated aspects, demonstrating promising results. The presented algorithm is successful in generating alternative tube designs from scratch and can accommodate varying requirements. The main novelty of this study is the development of a comprehensive decision algorithm that considers multiple engineering parameters simultaneously.</p
Variations on the Author
No full text“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Memorandum sent to Lord Edward Grey
No full textTitle: Memorandum presented to Lord Edward Grey, British Minister of Foreign Affairs and President-in-Chief of the Conference of Ambassadors of the Great Powers in London Originally published: Originally written in 1913 as a private memorandum Language: FrenchThe text used is from Ismail Qemali, Përmbledhje dokumentesh, ed. by T. Hoxha, (Tirana: Sh.B “8 Nentori,” 1982), pp. 232–235. About the author Ismail Qemali bej Vlora (also known as Ismail Kemal Pasha) [1844, Vlora, (It Valona, present-d..
A bibliography of IFLA conference papers [1979]
No full textThis booklet is a continuation of the first bibliography of "IFLA Conference papers 1968 - 1978". The papers included in the bibliography are all from 45th Congress and Council Meeting 27 August - 1 September 1979 in Copenhagen. The publication is arranged alphabetically by author or title and includes alphabetical cumulative subject and author indexes 1968 - 1979.
Compiled by: Ismail Abdullahi
Produced by: IFLA Clearinghouse - The Royal School of Librarianship, Copenhage
Standar Keshahihan Hadis Menurut Syuhudi Ismail
No full textThis Article aims to discuss Syuhudi Ismail’s view of the standard of authentic hadith. The author uses the library research method. This method uses data collection with the technique of documenting books that discuss Syuhudi Ismail and his method of studying hadith. Furthermore, the results of the study are: Syuhudi Ismail presents two principles in criticizing the authenticity of hadith, namely the major rule and the minor rule. The major rules are the varios conditions of criteria for the validity of a hadith that are general in nature, while the minor rules are the elements of the rules which are derivatives and detailed explanations of the rules major.
ABSTRAK
Artikel ini bertujuan untuk membahas pandangan Syuhudi Ismail terhadap standar keshahihan hadis. Penulis menggunakan metode kajian pustaka (library research). Metode ini menggunakan pengumpulan data dengan teknik mendokumentasikan buku-buku yang membahas tentang Syuhudi Ismail dan metodenya dalam menelaah hadis. Selanjutnya hasil dari kajian tersebut adalah: Syuhudi Ismail menyajikan dua kaidah dalam mengkiritik keshahihan hadis yaitu kaedah mayor dan kaedah minor. Kaedah mayor adalah berbagai syarat atau kreteria kesahihan suatu hadis yang bersifat umum, sedangkan kaedah minor yaitu unsur-unsur kaedah yang merupakan turunan dan penjelasan terperinci dari kaidah mayor
Ismail Fethi\'s Views on Spirit and Morality
No full textIsmail Fethi'nin Ruh ve Ahlâk'la ilgili Görüsleri isimli bu çalısmada, daha
önce hakkında herhangi bir çalısmanın yapılmadıgını tespit ettigimiz Ismail Fethi'nin
ruh ve ahlâkla ilgili görüsleri ele alınarak, müellifin bu görüsleri felsefe açısından
degerlendirilmeye çalısılmıstır.
Müellifin ruh görüsü zihin felsefesi, ahlâk görüsü ise ahlâk felsefesi
çerçevesinde ele alınmıstır. Ruh ile ilgili görüslerinde Ismail Fethi, dualist bakıs
açısına sahip oldugundan, onun bu noktadaki görüsleri önde gelen dualist filozoflarla
karsılastırmalı olarak ele alınmıstır. Dualistik ruh anlayısının problemlerine
deginilerek Ismail Fethi'nin ruh görüsünün problemleri belirlenmistir. Ayrıca ahlâk
görüsünde tasavvufî bakıs açısına sahip oldugunu tespit ettigimiz müellifin ahlâk
görüsü önce Osmanlı ahlâk düsüncesi içinde sonra da tasavvufî ahlâk içindeki yeri
tespit edilmeye çalısılmıstır.
Bu yöntemle ele aldıgımız görüslerinde müellifin bilhassa ruh konusunda
kendinden önceki düsünürlerden etkilenmis oldugunu, günümüzdeki bilimsel ve
felsefî verilerle yer yer ters düstügünü söyleyebiliriz. Ahlâk görüsünde ise belirli bir
sistem ortaya koymaktan ziyade bireysel ahlâk konularına deginerek ruh- beden
ayrımını öngören ruh görüsüne paralel, ruhun tezkiyesi konusu dısına pek
çıkmamıstır. Bu itibarla çalısmamızın niteligi Ismail Fethi nezdinde yeni ve orjinal
fikirler ortaya çıkarmaktan çok, bilinmeyen bir düsünürün fikirlerinin degerlendirilmesi
ve düsünce dünyamıza kazandırılması olarak özetlenebilir.In this study, namely \"Ismail Fethi\'s Views on Spirit and Morality\", Ismail Fethi\'s
views regarding spirit and morality, which we determined that have not been studied
before, are discussed and those views of the author are attempted to be evaluated
from the point of philosophy.
The authors\' view of spirit is examined in the frame of mind philosophy, while his
view of morality is examined in the frame of moral philosophy. Since, in his views
about spirit Ismail Fethi adopts dualistic approach, his views on that subject are
compared with the primary dualistic philosophers\'. The problems of dualistic spirit
concept are mentioned and the problems of Ismail Fethi\'s view of spirit are pointed
out. Moreover, as we identified that regarding his view of morality the author adopts
sufi perspective, the position of his moral view in the Ottoman moral thought and in
the sufi morality is tried to be determined.
We can say that in his views, which we examined with the method depicted
above, regarding his view of spirit, in particular, the author is affected from the
scholars before him. We can also say that in some aspects these views contradict
with the contemporary scientific and philosophic findings. About his view of morality,
it can be said that rather than composing a certain system, he mentioned more on
the individual morality matters. In parallel with the view of spirit which presumes spritbody
distinction, he barely went beyond the matter of purification of the soul. Thus,
rather than revealing Ismail Fethi\'s new and original thoughts, the character of our
study can be summarized as an evaluation of the thoughts of an unknown scholar
and bringing his contribution in our contemporary thought
Correction to: A framework of genetic algorithm-based CNN on multi-access edge computing for automated detection of COVID-19 (The Journal of Supercomputing, (2022), 78, 7, (10250-10274), 10.1007/s11227-021-04222-4)
No full textIn this article the author name Walaa N. Ismail was incorrectly written as Walaa N Ismail. The affiliation details for Author Walaa N. Ismail were incorrectly given as ‘Faculty of Computers and Information, Minia University, Minia, Egypt’ but should have been ‘Faculty of Computers and Information, Minia University, Minia, 61519, Egypt’. Walaa N. Ismail at affiliation ‘Faculty of Computers and Information, Minia University, Minia, 61519, Egypt’ was missing from the author list on the last page. The original article has been corrected
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