16 research outputs found
Fracture Strength of Acrylic Resin Reinforced with Glass Fibers in Simulated Implant-Supported Overdenture Abutments
No full textObjective: To evaluate the effect of glass fibers on acrylic resin fracture strength in simulated implant-supported overdenture (IOD) abutments.
Methods: A model was designed to simulate the clinical situation of an IDO (50 12 1.5 mm). Thirty models were divided into three equal groups: ten models not supported with glass fibers (control group), ten models with one layer of glass fibers (experimental group I) and ten models with two layers of glass fiber (experimental group II). All models were exposed to a three-point bending test, and fracture loads were analyzed using a one-way analysis of variance (ANOVA) followed by Bonferroni post-hoc test.
Results: IOD models reinforced with two layers of glass fibers (experimental group II) showed a mean ultimate load at fracture of 48.69 ± 3.71 Newton (N) compared to mean loads of 32.78 ± 2.41 N and 24.42 ± 2.73 N for the models reinforced with one layer (experimental group I) and non-reinforced with glass fibers (control group), respectively. ANOVA showed a statistically significant difference between the three groups regarding the mean ultimate load at fracture, and Bonferroni post-hoc test showed statistically significant differences between both experimental groups and the control group as well as between experimental group I and experimental group II.
Conclusions: The fracture strength of IDO abutments increases significantly by the addition of acrylic resin pre-impregnated with glass fibers, even when the thickness of acrylic is thin
A New Family of Optimal Eighth-Order Iterative Scheme for Solving Nonlinear Equations
No full textThe objective of this manuscript is to introduce a new family of optimal eight-order iterative methods for computing the numerical zeros of a nonlinear univariate equation that is not dependent on the second derivative. The family was designed to enhance the order of convergence by merging Bawazir’s method and Newton’s method as a third step. To demonstrate the performance of the offered scheme, assorted numerical comparisons have been investigated. In addition, the efficiency index of the new family is 1.6818
The Iraqi Turkman poet Falakoglu and a review of his poetry
No full text"Irak Türkmen Şairi Felekoğlu ve Şiirleri üzerinde Bir İnceleme" adlı bu doktora tez çalışması, Telafer'in önde gelen şairlerinden biri olan Felekoğlu'nun 245 şiirinin derlenmesi, şekil ve muhteva incelemesinden oluşmaktadır. Giriş bölümünün başlığı "Irak Türkmenleri ve Irak Türkmen Edebiyatı" şeklindedir. Burada, önce Irak Türkmenlerinin genel durumu, tarihi, coğrafyası ve, nufüsu hakkında kısaca bilgi verilmiştir. Daha sonra, Irak Türkmen edebiyatının klasik ve çağdaş dönemleri üzerinde durulmuştur. Türkmen edebiyatında yaşanan değişimler ve söz konusu olan akımlar hakkında da bilgi sunulmuştur. "Felekoğlu" başlıklı Birinci bölümde, Felekoğlu'nun hayatı, edebî kişiliği, dili ve üslubu hakkında bilgi verilmiş, hakkında yapılan çalışmalar, (kitap, makale, köşe yazısı, tezler) tanıtılmıştır. İkince bölümün ana başlığı "İnceleme"dir. Felekoğlu'nun şiirlerinde geçen dinî ve tasavvufî unsurlar, toplumla ilgili unsurlar, insanla ilgili ögeler ve son olarak tabiata ait ögeler, şiirlerden hareketle incelenmiştir. Tezin Üçüncü bölümü "Metinler" başlığını taşımaktadır. Bu bölümde, Felekoğlu'nun şiirleri, yayınlanmış ve yayınlanmamış, kendi el yazısıyla kaydettiği şiirler bir araya getirilerek verilmiştir. Metinler; beyit nazım birimiyle yazılmış olanlardan oluşan şiirler, dörtlüklerden meydana gelen şiirler ve hoyratlar olarak sıralanmıştır. Sonuç kısmında tezi yazarken elde edilen bilgi ve bulgulardan yola çıkılarak genel bir değerlendirme yapılmıştır. Kaynaklar'da, Felekoğlu hakkında yazılmış Arapça ve Türkmence makaleler, gazete ve dergi yazıları ile yapılmış akademik çalışmaların künyeleri verilmiştir. Ayrıca, Felekoğlu'nu tanıyan insanlardan görüşebildiklerimiz de "Kaynak Kişiler" başlığı altında tanıtılmıştır.The PhD research titled (The Iraqi Turkman Poet Falakoglu and a review of his Poetry) by the poet Falakoglu, whose one of the greatest poets of Tal-Afar, includes a compilation of 245 of his poems and a review of them in terms of form and content. In Part One titled (Iraqi Turkmen and Iraqi Turkmen Literature), we briefly described the general status of the Turkmens of Iraq, their history, the geographical location in which they were inhabited and their population in Iraq. The periods of classic and modern Turkmani literature were highlighted, and information was given about the changes and trends that occurred in those compositions. In Section One titled (Falakoglu), we discussed the life of Falakoglu, his literary personality, language, style, and his writings (books, articles, writings and theses). In Section Two titled (The Review), we focused on the religious and mystical elements in Falakoglu's poems, as well as the factors related to society, and elements related to human beings, and finally; the elements related to nature. Section Three of the Thesis is titled "The Texts". In this Section, Falakoglu's published and unpublished notices and handwritten pieces are presented. These texts, which include written poems, are arranged and consist of poetic verses, systems and poems consisting of Rubaiyat and the Hoyrat. In the Conclusion of the Thesis, a general evaluation was presented based on the information and results obtained as a result of writing the thesis. In the References section, references were made to articles written in Arabic and Turkmani, as well as publications in magazines, newspapers and academic literature disseminated on the poet Falakoglu. In addition to mentioning the "Personal References" that we were able to conduct personal interviews with
Fracture Strength of Acrylic Resin Reinforced with Glass Fibers in Simulated Implant-Supported Overdenture Abutments
No full textConflict of law and the methodology of Tarjīẖ : a study in Islamic legal theory
No full textIslamic law never achieved unity but expressed itself in, at least, four surviving schools. More interestingly, contemporary Muslim communities are still divided among themselves on a number of issues related to their laws. This work describes how problem of legal conflicts have been tackled by Muslim jurists. It is an attempt to examine closely the phenomenon of conflict in Islamic law from the standpoint of usūl-al-fiqh or Islamic legal theory. In fact, much is heard nowadays of the contradiction in the body of Islamic law. Whilst in contrast, little is presented in terms of the methodology of removing this conflict. The present work therefore, attempts to redress this balance. The emphasis of the work will be concerned primarily with tarjīh methodology ; how to give preference to one piece of evidence or argument over the other when they conflict. Nevertheless, considerable concern is given to investigating the background to the conflict of law in the Shari'ah.
This study of a neglected area in Islamic legal scholarship will be an important source of reference to students, both practising and theoretical jurists or to anyone who merely wishes to increase his knowledge of legal themes, particularly legal conflict. The very aim of the work is to argue that conflict is a natural and unavoidable consequence of legal study because legal conflict is only conflicting principles and arguments adduced by both the classical and modern jurists to reach what is actually intended by God in the target case. Therefore, conflicts are inevitable in most of the cases in fiqh owing to the variety of principles set out to deal with one piece of legal evidence, let alone with all the pieces of legal evidence in question.
Tarjīh is therefore, an important and workable instrument in the re-examination of these conflicts and in arriving at the most accurate principle for establishing the law for as long as this is possible. It is hoped that the discovery of new facts and the increase of knowledge which results from the broadening and deepening of the research will positively contribute to the process of unification of Islamic law
Visual outcomes of bilateral congenital and developmental cataracts in young children in south India and causes of poor outcome.
No full textCONTEXT: Bilateral pediatric cataracts are important cause of visual impairment in children. AIM: To study the outcome of bilateral pediatric cataract surgery in young children. SETTING AND DESIGN: Retrospective case series in a tertiary center. MATERIALS AND METHODS: Records of pediatric cataracts operated between January 2001 and December 2003, with a minimum follow-up of 3 months, were reviewed retrospectively. STATISTICAL METHODS: Independent sample t-test, Fisher's exact test, and logistic regression using SPSS (Statistical Package for Social Science, Chicago, USA) version 12. RESULTS: 215/257 (83.7%) patients had a minimum follow-up of 3 months. The mean age of presentation to the hospital was 53 months (range: 0-168 months). Congenital cataract was present in 107 patients (58.2%) and developmental cataract in 77 patients (41.8%). The mean age at surgery was 55.2 months (range: 1-168 months). Out of 430 eyes, 269 (62.6%) had an intraocular lens implanted. The mean duration of follow-up was 13.1 months (range: 3-38 months). Pre-operatively, 102 patients (47.3%) had visual acuity 6/18. The most common early post-operative complication was fibrinous uveitis in 57 eyes (13.3%) and the most common delayed post-operative complication was posterior capsular opacification in 118 eyes (27.4%). The most important prognostic factor for poor outcome was congenital cataract (odds ratio [OR]: 26.3; 95% confidence interval [CI], 4.4-158.5) and total cataract (OR: 4.8; 95% CI, 1.3-17). CONCLUSION: Nearly half of the eyes had visual acuity >6/18. The outcome was poorer in congenital cataracts, especially those operated after >1 year of age
Effects of the Bark Resin Extract of Garcinia nigrolineata on Chronic Stress-Induced Memory Deficit in Mice Model and the In Vitro Monoamine Oxidases and β-Amyloid Aggregation Inhibitory Activities of Its Prenylated Xanthone Constituents
No full textThe present study describes investigation of the effects of the bark resin extract of Garcinia nigrolineata (Clusiaceae) on the cognitive function and the induction of oxidative stress in both frontal cortex and hippocampus by unpredictable chronic mild stress (UCMS). By using behavioral mouse models, i.e., the Y-maze test, the Novel Object Recognition Test (NORT), and the Morris Water Maze Test (MWMT), it was found that the negative impact of repeated mild stress-induced learning and memory deficit through brain oxidative stress in the UCMS mice was reversed by treatment with the bark resin extract G. nigrolineata. Moreover, the prenylated xanthones viz. cowagarcinone C, cowaxanthone, α-mangostin, cowaxanthone B, cowanin, fuscaxanthone A, fuscaxanthone B, xanthochymusxanthones A, 7-O-methylgarcinone E, and cowagarcinone A, isolated from the bark resin of G. nigrolineata, were assayed for their inhibitory activities against β-amyloid (Aβ) aggregation and monoamine oxidase enzymes (MAOs)
The efficacy and safety of new potassium binders on renin–angiotensin–aldosterone system inhibitor optimization in heart failure patients: a systematic review and meta‐analysis
No full textAbstract Guideline‐directed medical therapy (GDMT) has improved outcomes in patients with heart failure, including the use of renin–angiotensin–aldosterone system inhibitors, which can hinder the excretion of potassium, resulting in hyperkalaemia. New potassium binders (NPBs) can prevent this adverse effect; however, the efficacy and safety of NPB for this indication have not been fully established. We conducted a systematic review and meta‐analysis synthesizing randomized controlled trials (RCTs), which were retrieved by systematically searching PubMed, Web of Science, Scopus, and Cochrane through 26 April 2023. The risk of bias assessment was conducted, following Cochrane's updated Risk of Bias 2 assessment tool. We used the fixed‐effects model to pool dichotomous data using risk ratio (RR) and continuous data using mean difference (MD), with a 95% confidence interval (CI) (PROSPERO ID: CRD42023426113). We included six RCTs with a total of 1432 patients. NPB was significantly associated with successful mineralocorticoid receptor antagonist (MRA) optimization [RR: 1.13 with 95% CI (1.02–1.25), P = 0.02], decreased patients with MRA at less than the target dose [RR: 0.72 with 95% CI (0.57–0.90), P = 0.004], and decreased hyperkalaemic episodes [RR: 0.42 with 95% CI (0.24–0.72), P = 0.002]. However, there was no difference between NPB and placebo regarding angiotensin‐converting enzyme inhibitor (ACEi)/angiotensin receptor blocker (ARB)/angiotensin receptor/neprilysin inhibitor (ANRi) optimization [RR: 1.02 with 95% CI (0.89–1.17), P = 0.76] and serum potassium change [MD: −0.31 with 95% CI (−0.61 to 0.00), P = 0.05], with an acceptable safety profile except for the increased incidence of hypokalaemia with NPB [RR: 1.57 with 95% CI (1.12–2.21), P = 0.009]. NPB has been shown to improve GDMT outcomes by enhancing MRA optimization and reducing hyperkalaemic episodes. However, there are limited data on the effects of NPB on ACEi/ARB/ANRi optimization. Future RCTs should investigate ACEi/ARB/ANRi optimization and conduct head‐to‐head comparisons of NPB (patiromer and sodium zirconium cyclosilicate)
Obstetric outcomes for women with female genital mutilation at an Australian hospital, 2006-2012: A descriptive study
No full text© 2016 The Author(s). Background: Women, who have been subjected to female genital mutilation (FGM), can suffer serious and irreversible physical, psychological and psychosexual complications. They have more adverse obstetric outcomes as compared to women without FGM. Exploratory studies suggest radical change to abandonment of FGM by communities after migration to countries where FGM is not prevalent. Women who had been subjected to FGM as a child in their countries of origin, require specialised healthcare to reduce complications and further suffering. Our study compared obstetric outcomes in women with FGM to women without FGM who gave birth in a metropolitan Australian hospital with expertise in holistic FGM management. Methods: The obstetric outcomes of one hundred and ninety-six women with FGM who gave birth between 2006 and 2012 at a metropolitan Australian hospital were analysed. Comparison was made with 8852 women without FGM who gave birth during the same time period. Data were extracted from a database specifically designed for women with FGM and managed by midwives specialised in care of these women, and a routine obstetric database, ObstetriX. The accuracy of data collection on FGM was determined by comparing these two databases. All women with FGM type 3 were deinfibulated antenatally or during labour. The outcome measures were (1) maternal: accuracy and grade of FGM classification, caesarean section, instrumental birth, episiotomy, genital tract trauma, postpartum blood loss of more than 500 ml; and (2) neonatal: low birth weight, admission to a special care nursery, stillbirth. Results: The prevalence of FGM in women who gave birth at the metropolitan hospital was 2 to 3 %. Women with FGM had similar obstetric outcomes to women without FGM, except for statistically significant higher risk of first and second degree perineal tears, and caesarean section. However, none of the caesarean sections were performed for FGM indications. The ObstetriX database was only 35 % accurate in recording the correct FGM type. Conclusion: Women with FGM had similar obstetric outcomes to women without FGM in an Australian metropolitan hospital with expertise in FGM management. Specialised FGM services with clinical practice guideline and education of healthcare professionals may increase the detection rate of FGM and improve obstetric management of women with FGM
Efficacy and safety of pulsed‐field versus conventional thermal ablation for atrial fibrillation: A systematic review and meta‐analysis
No full textAbstract Background Pulsed‐field ablation (PFA) has emerged as an innovative alternative to radiofrequency (RF) and cryoablation because it selectively targets myocardial tissue. Thus, we aim to estimate the efficacy and safety of PFA versus thermal ablation for atrial fibrillation (AF) ablation. Methods A systematic review and meta‐analysis were retrieved from PubMed, WOS, SCOPUS, EMBASE, and CENTRAL through September 2023. We used RevMan V. 5.4 to pool dichotomous data using risk ratio (RR) and continuous data using mean difference (MD) with a 95% confidence interval (CI). PROSPERO ID: CRD42023480321 Results We included 17 studies with a total of 2255 patients. PFA was significantly associated with a decreased incidence of AF recurrence (RR: 0.66 with 95% CI [0.51, 0.87], p = .003). However, there was no significant difference between PFA and thermal ablation in arrhythmia recurrence (RR: 0.92 with 95% CI [0.74, 1.46], p = .42). PFA was significantly associated with decreased total procedure time (MD: −15.15 with 95% CI [−20.23, −10.07], p < .00001), decreased heart rate change (MD: −7.39 with 95% CI [−12.16, −2.62], p = .002), decreased phrenic nerve palsy (RR: 0.38 with 95% CI [0.15, 0.98], p = .05), and reduced esophageal lesions (RR: 0.09 with 95% CI [0.01, 0.69], p = .02). On the contrary, PFA was significantly associated with increased pericardial tamponade (RR: 6.14 with 95% CI [1.43, 26.33], p = .01). Conclusion PFA was significantly associated with decreased AF recurrence, total procedure time, heart rate change, phrenic nerve palsy, esophageal lesion, and increased incidence of pericardial tamponade compared with thermal ablation
