Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99


Any time

4 ( 1 )

2020 ( 11 )

2019 ( 646 )

2018 ( 758 )

Custom range...

Search Results: 1 - 10 of 423237 matches for " M. Er z "
All listed articles are free for downloading (OA Articles)
Page 1 /423237
Display every page Item
Finite Element Formulation of Forced Vibration Problem of a Prestretched Plate Resting on a Rigid Foundation
M. Er z,A. Yildiz
Journal of Applied Mathematics , 2007, DOI: 10.1155/2007/56360
Abstract: The three-dimensional linearized theory of elastodynamics mathematical formulation of the forced vibration of a prestretched plate resting on a rigid half-plane is given. The variational formulation of corresponding boundary-value problem is constructed. The first variational of the functional in the variational statement is equated to zero. In the framework of the virtual work principle, it is proved that appropriate equations and boundary conditions are derived. Using these conditions, finite element formulation of the prestretched plate is done. The numerical results obtained coincide with the ones given by Ufly and in 1963 for the static loading case.
Biosphere Reserve as a Learning Tourism Destination: Approaches from Tasik Chini  [PDF]
A. Habibah, I. Mushrifah, J. Hamzah, A. Buang, M. E. Toriman, S. R. S. Abdullah, K. Z. Nur Amirah, Z. Nur Farahin, A. C. Er
International Journal of Geosciences (IJG) , 2013, DOI: 10.4236/ijg.2013.410142

Biosphere Reserves (BR) are special areas or regions highly recognized for their conservation, logistic functions and sustainable development initiatives. However, not much work has explored into the BRs’ roles or functions as tourism learning destination, especially during the early years of their recognition as BR. This article aims to identify the mechanism utilised in the learning tourism function at Tasik Chini Biosphere Reserve since its inception in 2009 to the present year of 2013. The results reveal that learning of science and culture of the locals are the two-tier perspectives utlised in conceptualizing a tourism learning destination. Activities introduced in the specific themes of The Sustainability of Tropical Heritage fulfils the fundamental need of deep learning of scientific research and learning of the BR’s ecosystem, while the Ecosystem Health fulfils both deep and surface learning of the young visitors. The cultural knowledge of the community, on the other hand, offers a unique and authentic experience to the learners or visitors. As a learning tourism destination, the learning community, nevertheless, expects that the standard of tourism services should not be marginalised and must meet the high standard of tourism services. It is imperative that the science of Biosphere Reserve and the local culture are linked to set a holistic foundation in the creation of the learning programmes at the Tasik Chini Biosphere Reserve.

A Double-Sided View to Adult Vaccination: The Opinions and Attitudes of Patients and Health Workers  [PDF]
Raziye ?ule Gümü?tak?m, P?nar Bilgili, Murat ?evik, Duygu Ayhan Ba?er, Adem Do?aner, Selda Handan Karahan Saper, Zuhal Kanevetci, Ergül ?z?elebi
Health (Health) , 2018, DOI: 10.4236/health.2018.1012128
Abstract: Objective: Although there are adult vaccination schemes in our country, there are serious deficiencies in the way that doctors direct the patients to this vaccination, but also patients have to make and demand these vaccinations. The aim of our study is to identify the shortcomings in this area and draw a roadmap for what arrangements should be made in terms of physicians and patients in order to increase adult immunization rates in primary care. Method: We conducted a two-phase, multicentered, descriptive clinical trial between October and December 2017. The first phase of the trial was carried out with patients from 3 Family Health Centers in Antalya, Istanbul and Osmaniye. Patients to be interviewed were selected voluntarily among Family Health Center’s applicants. The second phase of the trial was carried out with health workers, who were participated to trial from 26 different provinces of Turkey. In the process, a questionnaire of 19 questions was applied to primary health care workers by the internet. Results: 490 patients were included in the study. There was a significant difference between gender, age, education level and guideline follow-up and vaccination status of patients [p < 0.05]. 794 primary health care workers participated in the survey. There was a statistically significant difference between gender, age groups, education and follow-up of guidelines and vaccination status [p < 0.05]. Conclusion: As a result of the studies including our study about adult vaccination, only 10% - 20% of the targeted groups in adults can be vaccinated. However, just like in childhood during adulthood, vaccinations protect individuals from diseases and provide economic benefits. Firstly, the knowledge level of physicians on adult immunization should be updated with in-service trainings, they should first be convinced to vaccinate because they are in risk group and then they should be recommended vaccination to patient to increase the vaccination rates.
Correlation of serum procalcitonin and creatine phospo-kinase levels with tissue histopathology in rats exposed to experimental electric injury
?ebnem K?l??,Erdo?an M. S?züer,Kemal Deniz,Recep Saraymen
Erciyes Medical Journal , 2007,
Abstract: Purpose: The aim of this study was to investigate whether serum procalcitonin and creatine- phosphokinase levels may be useful parameters to indicate the severity of tissue damage and to seek a correlation between serum procalcitonin and creatine- phosphokinase levels and tissue histopathology.Material and Method: A total of 32 rats were divided into 4 groups, each consisting of 8 rats. Group 1 did not undergo any procedure and was assigned as the control group. Groups 2, 3, and 4 were exposed to an electrical current of 110, 220, and 600 Volts, respectively, to induce electric injury. Groups 2, 3, and 4 were named low voltage, moderate voltage, and high voltage groups, respectively. Electric injury was induced with a specifically adjusted high voltage test device. Rats were anesthetized and given electricity of 0.1 Amper for 5 seconds through electrodes connected to the right upper and lower extremities. Blood samples were drawn from the rats at the 12th hour of the experiment to obtain serum procalcitonin and creatine- phosphokinase levels. Tissue samples were obtained from the striated muscle tissue from the right thigh and evaluated histopathologically using a light microscope.Results: Procalcitonin and creatine-phosphokinase levels in the samples taken after exposure to electricity were significantly higher in the high-voltage group than those in the control group (p<0.05). The histopathologic score results in the samples, which were taken after the electric exposure, were also significantly higher in high-voltage group than those in the control group (p<0.05).Conclusion: Serum procalcitonin and creatinin-phosphokinase levels may be useful indicators to estimate tissue damage in high-voltage electric injuries because serum procalcitonin and creatinin-phosphokinase levels were found to be significantly correlated with histopathologic damage score results.High-voltage appears to cause more severe tissue damage compared with low- and moderate- voltage because the histopathologic score results of the high-voltage group were significantly higher than those of the control group.
Relationship between electrodiagnostic severity and neuropathic pain assessed by the LANSS pain scale in carpal tunnel syndrome
Gürsoy AE, Koluk sa M, Babacan Y ld z G, Kocaman G, elebi A, Ko er A
Neuropsychiatric Disease and Treatment , 2013, DOI: http://dx.doi.org/10.2147/NDT.S38513
Abstract: tionship between electrodiagnostic severity and neuropathic pain assessed by the LANSS pain scale in carpal tunnel syndrome Original Research (574) Total Article Views Authors: Gürsoy AE, Koluk sa M, Babacan Y ld z G, Kocaman G, elebi A, Ko er A Published Date January 2013 Volume 2013:9 Pages 65 - 71 DOI: http://dx.doi.org/10.2147/NDT.S38513 Received: 25 September 2012 Accepted: 20 November 2012 Published: 07 January 2013 Azize Esra Gürsoy, Mehmet Kolukisa, Gülsen Babacan Yildiz, Gülsen Kocaman, Arif elebi, Abdülkadir Ko er Department of Neurology, Bezmialem Vakif University, Istanbul, Turkey Objective: The aim of the study was to investigate the relationship between the presence of neuropathic pain assessed by the Leeds Assessment of Neuropathic Symptoms and Signs (LANSS) scale and electrophysiological findings in patients with carpal tunnel syndrome (CTS). Methods: We studied 124 hands with idiopathic CTS with pain complaints involving hand and wrist. All hands were assessed by the LANSS with which a score of 12 or more is defined as pain dominated by neuropathic mechanisms. These hands were assigned to minimal, mild, moderate, severe, or extreme severe groups according to the results of the median nerve conduction studies. Results: A LANSS score ≥ 12, suggestive of pain dominated by neuropathic mechanisms, was defined in 59 (47.6%) CTS hands. Pain intensity was significantly higher in CTS hands with a LANSS score ≥ 12 (P < 0.001). Among electrophysiological findings, compound muscle action potential amplitude was significantly lower in hands with a LANSS score ≥ 12 compared with hands with a LANSS score < 12 (P = 0.020). Severity of CTS was not significantly different between LANSS ≥ 12 and LANSS < 12 groups. Electrophysiological severity was significantly higher in CTS hands with evoked pain (P = 0.005) and allodynia (P < 0.001) in LANSS subscore analysis. Conclusion: We suggest that the presence of pain dominated by neuropathic mechanisms in CTS is not related to electrophysiological CTS severity. Neuropathic pain should be assessed carefully in patients with CTS, and an appropriate treatment plan should be chosen, taking into account the clinical and electrophysiological findings together with the true pain classification.
Chemical Durability and Structural Properties of Al2O3-CaO-Na2O-P2O5 Glasses Studied by IR Spectroscopy, XRD and SEM  [PDF]
Y. Er-rouissi, Z. Chabbou, N. Beloued, S. Aqdim
Advances in Materials Physics and Chemistry (AMPC) , 2017, DOI: 10.4236/ampc.2017.710028
Abstract: Various characterization techniques were used to study the composition of the glass series xAl2O3-(40 - x)CaO-10Na2O-50P2O5 (with 0 ≤ x ≤ 10) in terms of chemical durability, X-ray diffraction, IR spectroscopy and scanning electron microscopy (SEM). The improved chemical durability was attributed to the replacement of easily hydrated P-O-P bonds by covalent and resistant Ca-O-P and Al-O-P bonds. However, the change in the dissolution rate (DR) versus time showed a marked decrease in chemical durability with increasing the Al2O3 content to the detriment of the CaO content. The X-ray diffraction analysis of glasses annealed at 550°C and 660°C for 48 hours indicated the presence of pyrophosphate phases and predominant metaphosphates or cyclic metaphosphate phases when the Al2O3 content was ≤7.5 mol%. Nevertheless, both, X-ray diffraction and IR spectroscopy confirmed the structural tendency change from metaphosphate (Q2) and pyrophosphate structural units (Q1). Toward short isolated orthophosphate units (Q0) when the Al2O3 content above 7.5 mol%. SEM micrographs illustrated that the number of crystallites increased in the glass network when the Al2O3 content increased at the expense of the CaO content. An increase in the Al2O3 content to 10 mol% led to the formation of a larger number of crystallites of different sizes, dominated by small crystallite sizes assigned to short isolated orthophosphate groups. This phenomenon led to a decrease in chemical durability and seems to be a favorable factor for the formation of the apatite layers which enclose the glass, in a SBF solution test, able of regenerating bone tissue in biomedical application.
Comparison of AgNOR Count and AgNOR Surface Area/Total Nuclear Surface Area Proportions to Sex and Age in Cases with Cystic Nodular Goitre
Erz R et al.
Konuralp Tip Dergisi , 2012,
Abstract: Aim: Different proteins have different roles in various diseases. Argyrophilic nucleolar organising region associated proteins (AgNORs) are synthesized from secondary constriction of acrocentric chromosome interested in a variety of diseases including thyroid disorders.Our aim was the comparison of the AgNOR count and AgNOR surface area/total nuclear surface area (NORa/TNa) proportions to different sex and age in cases with cystic nodular goitre.Materials and Methods: Twenty female (age range 26-78) and male (age range 26-79) whose fine needle aspiration (FNA) materials were compatible with cystic nodular goitre were included in the study. Those biopsy materials were stained for AgNOR detection according to a specific protocol. 100 nuclei per individual have been evaluated, and both AgNOR count and NORa/TNa values of individual cells were detected for each group.Results: Female patients with cystic nodular goitre had not significantly (p=0.131) higher AgNOR count (2.05±0.46%) and NORa/TNa (6.53±1.21%) than in males (2.35±0.66% and 7.03±1.12%) (p=0.211), respectively. Additionally, there is not any correlation between age and AgNOR number (r=0.085 p=0.627) and NORa/T a ratio (r=0.286; p=0.096) in both of male and female.Conclusion: There is not any relationship between AgNOR protein synthesis and both of age and sex in cases with cystic nodular goitre.
Evrim ?L?ERZüNEL
Turkish Studies , 2011,
Abstract: There appears a big difference between the voyagers of ancienttimes and the travellers of today. The concept of modern travelling is farmore steps beyond from the voyagers that builds cultural bridgesbetween civilizations. Today, the global concept of “modern” tourismsector’s menthality focuses rather different from the ancient voyagersculture. Most of the developing countries perceives tourism as anindusturial brunch. In fact, some of them canalize their investments totouristic areas and regard it as a life saver. So this clearly shows us thatmodern tourism concept existance depends on the triology of packing,marketing and consuming. This triology of modenization brougt newnotions to both our daily lifes and our perception of identity.Furthermore, these notions became dominant at our national indentityconstruction process. Also, modernisation succeeded in constructing itsown habitus. One and very important habitus of modern world shows upin touristic zones.Thus in this aticle, the new notions of modern tourism concept likeauthentification, locality and the consuming spaces of modern touristswill be discussed. Along with this, the importance of enchanting thetouristic spaces without degenerating the cultural and touristic spaceswill be argued. While doing this, the theories of John Urry, George Ritzerwill be used. Besides, in this paper all these issues stated abowe will berelated and argued with UNESCO’s Convention for the Safeguarding ofthe Intangible Cultural Heritage (2003). Kültür turizmi günümüzde ne kan kavramlar aras ndad r.Turizmin bacas z bir sanayi kolu oldu u fikri yayg nla t ndan beri bualana y nelen dikkat yo unla m t r. Ne var ki eski zamanlar n gitti iyerle geldi i yer aras nda k prüler kuran seyyahlar n n yerini bugüngitti i yeri bir tüketim nesnesine d nü türen turistler alm t r.Günümüzde modern seyahat anlay eskisine g re olduk afarkl la m t r. Makalede ncelikli olarak a da turizm anlay n n kmazlar , züm odakl bir yakla mla yeniden ele al nacakt r. Güne denizkum ü genine s k t r lm Türk turizmini i inde bulundu ubuhrandan kartmak i in zellikle halkbiliminin son d nemtart malar n n odak olarak g rülmesi nemlidir. Bu nedenle zümodakl yakla mlar n merkezine ncelikle “somut olmayan kültürel miras”kavram yerle tirilecektir. Ek olarak a da turizm alg s n n mekansal vei sel tüketim alanlar n n yeniden in as sorunu, merkeze al nan bukavramla ili kilendirilerek züm nerileri getirilmi tir. Bunu yaparkende John Urry, George Ritzer’in kuramsal zümlemelerindenfaydalan lm t r.
The Market Difficulty for The Use of The Moneo Electronic Purse
Zouha?er M’Chirgui
Journal of Internet Banking and Commerce , 2006,
Abstract: Whether in other countries the introduction of electronic purse as a new means for micropayment has known a success (Belgium with Proton and Hong Kong with Octopus), in France the electronic purse, namely Moneo, meets at some problems preventing a widespread adoption and use by customers and merchants. Based on the two most highly successful schemes – Proton and Octopus - some potential solutions are proposed, dealing mainly with the technological and economic aspect, in order to help the adoption and the use of Moneo.
Second-order sliding mode control of time delay systems
Fi?er Jaromír,Zítek Pavel
Acta Montanistica Slovaca , 2003,
Abstract: The contribution of the paper is a proposal of the second-order sliding mode control of time delay systems developed analogously to the first-order version. Unlike the control variable itself in the first-order version the first derivative (speed) of this variable is assessed in the second-order scheme of the SMC (Sliding Mode Control). In accordance with the first order SMC scheme a parallel model of the control system is applied prescribing its desired behaviour, to be followed by the controlled process. The model of the feedback system consists of both the process and the feedback controller models adjusting the control action amplitude. The process model is supposed to be identified as time delay system described by an anisochronic state model, that brings a low order form advantageous for the control synthesis. This synthesis is based on a dominant pole assignment performed by the help of the Ackermann formula extension. The mismatch between the process and its model, known as perturbation, is rejected by sliding mode technique. The second-order sliding mode is proposed to suppress the usually encountered chattering of the first-order version of the sliding mode control.
Page 1 /423237
Display every page Item

Copyright © 2008-2017 Open Access Library. All rights reserved.