bluuebunny/crossref_metadata_2025 huggingface dataset:
Hedonic Games with Ordinal Preferences and Thresholds
Authors: Kerkmann Anna Maria , Lang Jérôme , Rey Anja , Rothe Jörg , Schadrack Hilmar , Schend Lena
Published: April 2020

We propose a new representation setting for hedonic games, where each agent partitions the set of other agents into friends, enemies, and neutral agents, with friends and enemies being ranked. Under the assumption that preferences are monotonic (respectively, antimonotonic) with respect to the addition of friends (respectively, enemies), we propose a bipolar extension of the responsive extension principle, and use this principle to derive the (partial) preferences of agents over coalitions. Then, for a number of solution concepts, we characterize partitions that necessarily or possibly satisfy them, and we study the related problems in terms of their complexity.
Relationship between cervical vertebral maturation and dental development in a sample of yemeni children and adolescents
Authors:   Department of orthodontics, Faculty of Dentistry, university of Science and Technology, Sana, Yemen., Al-Aunhomi Ali , Aldhorae Khalid ,   Head of orthodontic Department, college of dentistry, University of Thamar, Thamar, Yemen., Ishaq Ramy ,   Department of orthodontics, Faculty of Dentistry, university of Science and Technology, Sana, Yemen., Al-Labani Mohammed ,   Department of orthodontics, Faculty of Dentistry, university of Science and Technology, Sana, Yemen., Al-Maweri Sadeq ,   Department of Oral Medicine and Diagnostic Sciences, Al-Farabi Colleges, Riyadh, Saudi Arabia, Al-Ashtal Amin ,   Department of orthodontics, Faculty of Dentistry, university of Science and Technology, Sana, Yemen
Published: April 2020

Objective: This study was conducted to investigate the relationship between dental development and cervical vertebral maturation stages in a group of Yemeni children and adolescents. Materials and Methods: The study included digital panoramic radiographs and lateral skull cephalograms obtained from 207 Yemeni subjects—122 females and 85 males aged between 8 to 18 years. Dental maturity was evaluated according to the method of Demirijian et al.,6 calcification stages of the left mandibular canines, first and second premolars and second molars were assessed. Skeletal maturity was assessed by the cervical vertebral maturation (CVM) stages according to the method of Baccetti et al.10 Correlation between CVM and dental maturation was evaluated by Spearman rank-order correlation coefficient (SROCC). Results: CVM and dental calcification stages were highly correlated (p<0.001) in both genders, ranging from 0.686 to 0.873 for females and 0.787 to 0.871 for males. Calcification stages of the second molars showed the strongest correlation with CVM. Conclusion: Calcification stages of the second molar may be used as a reliable maturation indicator. Dental maturation may be applied to determine the skeletal maturity status of Yemeni children and adolescents.
Dimension and morphology of the mandibular condyle in class i patients in cone beam computed tomography
Authors:   Escuela de Odontología, Facultad de Ciencias de la Salud, Universidad Peruana de Ciencias Aplicadas, Lima, Perú., Bustamante Carmen , Labrín Vanessa ,   Escuela de Odontología, Facultad de Ciencias de la Salud, Universidad Peruana de Ciencias Aplicadas, Lima, Perú., Casas-Apayco Leslie ,   Escuela de Odontología, Facultad de Ciencias de la Salud, Universidad Peruana de Ciencias Aplicadas, Lima, Perú., Ghersi Hugo ,   Escuela de Odontología, Facultad de Ciencias de la Salud, Universidad Peruana de Ciencias Aplicadas, Lima, Perú.
Published: April 2020

To evaluate the anterior-posterior (A-P)/medial-lateral (M-L) dimension, and morphology of the mandibular condyle in patients aged 18 to 65 years with Class I skeletal pattern on Cone Beam CT scans. Materials and Methods: Seventy one scans were evaluated using RealScan 2.0 software. The dimension was determined by points A (most anterior in the sagittal plane), P (most posterior in the sagittal plane), M (most interior in the coronal plane), L (most exterior in the coronal plane). The morphology of the condyle was evaluated in two coronal and sagittal planes, being classified as: round, flat, convex or mixed. The size of the condyle was analyzed by descriptive statistics and the morphology by frequency distribution. For the bivariate analysis, the Student's t-test was applied. Results: Measurements were obtained for the A-P diameter of the right condyle (RC) (8.72mm ± 1.25mm) and the left condylar (LC) (8.50mm ± 1.50mm), the M-L diameter of the RC (19.24mm ± 2.03mm) and the LC (18.97mm ± 1.87mm). There were significant differences in the male M-L dimension of the LC compared to the female (p=0.002). The most prevalent morphology of RC (35.21) and IQ (23.94) in the coronal plane was round. Conclusion: The A-P dimension of the right and left condyle is similar in both genders; however, there are differences in the M-L dimension of the left male condyle. The most prevalent morphology of the right and left condyle was round in the sagittal plane with the exception of the coronal plane.
Serum vitamin B12 associated with vitamin D/25(OH)D in women with recurrent aphthous stomatitis
Authors:   Department of Oral Medicine, Faculty of Dentistry, Universitas Gadjah Mada, Yogyakarta, Indonesia., Budiarti Sri , Kendarwati Puput ,   Undergraduate Dental Study Program, Faculty of Dentistry, Universitas Gadjah Mada, Yogyakarta, Indonesia., . Supriatno ,   Department of Oral Medicine, Faculty of Dentistry, Universitas Gadjah Mada, Yogyakarta, Indonesia., Soebadi Bagus ,   Department of Oral Medicine, Faculty of Dental Medicine, Universitas Airlangga, Surabaya, Indonesia, Ernawati Diah Savitri ,   Department of Oral Medicine, Faculty of Dental Medicine, Universitas Airlangga, Surabaya, Indonesia., Susanto Hendri ,   Department of Oral Medicine, Faculty of Dentistry, Universitas Gadjah Mada, Yogyakarta, Indonesia.,   Oral Medicine Specialist Study Program, Faculty of Dental Medicine, Universitas Airlangga, Surabaya, Indonesia.
Published: April 2020

Vitamin B12 and Vitamin D deficiency may contribute to recurrent aphthous stomatitis (RAS). Current studies have showed vitamin B12 to be associated with vitamin D in women, however no study has assessed vitamin B12 associated with vitamin D/25(OH)D in women with RAS. Objective: To investigate the association between serum vitamin B12 and vitamin D/25(OH)D in women with RAS. Materials and Methods: Fourty one women with RAS who meet the inclusion criteria participated in this study. The inclusion criteria were women with RAS without other oral diseases. The exclusions criteria were those who have systemic diseases, taking medications or smoked. All subjects underwent venupuncture to draw blood to quantify serum vitamin B12 and vitamin D/25(OH)D. The characteristic of subjects, severity of RAS, serum Vitamin B12 and Vitamin D/25(OH)D were collected and presented descriptively. The correlation between vitamin B12 and Vitamin D/25(OH)D was analyzed using Pearson correlation test with 95% confidence interval. This study was approved by Medical and Health Ethics Committe, Faculty of Medicine, Universitas Gadjah Mada, Yogyakarta, Indonesia. Results: All RAS subjects have normal mean value of serum Vitamin B12 (453.97+154.44pg/ml) and have low mean value of serum vitamin D/25(OH)D (10.79 +3.29ng/ml) categorized as vitamin D deficiency. The Pearson correlation test showed that there was a significant positive correlation between mean serum Vitamin B12 and Vitamin D/25(OH)D (r= 0.313, p<0.05). Conclusion: There is correlation between vitamin B12 and Vitamin D, and a low level of Vitamin D may contribute in RAS in women.
In vitro efficacy of five pediatric toothpastes in the inhibition of Streptococcus mutans ATCC 25175
Authors:   Práctica Privada,Perú., Miñano José ,   Universidad Privada Antenor Orrego. Trujillo, Perú, Espinoza María V. ,   Universidad Privada Antenor Orrego. Trujillo, Perú.
Published: April 2020

The present in vitro study compared the inhibitory action of five pediatric toothpastes against Streptococcus mutans ATCC 25175. Materials and Methods: Cross-sectional, comparative and experimental study. The microorganism Streptococcus mutans ATCC 25175 was inoculated onto solid culture medium of Müeller-Hinton supplemented with blood, then the plates were inoculated with five pediatric toothpastes: Oral B Stages, Colgate Smiles, Aquafresh My Little Teeth, Dentito and Denture Kids. Samples were incubated at 37°C for 48 hours. Subsequently the inhibition halos were measured; the experiment was repeated 20 times for each sample. Statistical analysis was performed with ANOVA complemented with Tukey's test. Results: Oral B Stages yielded a mean inhibitory halo of 23.2mm, Colgate Smiles an average of 21.7mm, Aquafresh My Little Teeth of 13.6mm, Dentito of 18.5mm, and Denture Kids a mean of 23.0mm. When performing the ANOVA test, it was found that there was a significant difference in the inhibitory action of pediatric toothpastes (p<0.005) and when using Tukey's multiple comparison test, Oral B and Denture Kids presented similar inhibitory action. Conclusion: All toothpastes presented inhibitory action against Streptococcus mutans ATCC 25175. A significant difference between their effectiveness was observed. Oral B Stages showed the greatest degree of inhibition.
Elimination of an intraradicular biofilm composed of Enterococcus faecalis and Candida albicans using a negative apical pressure irrigation system
Authors:   Endodontics Postgraduate Program, Faculty of Dentistry, The Autonomous University of San Luis Potosí, SLP, Mexico., Méndez-González Verónica , Vitales-Noyola Marlen ,   Endodontics Postgraduate Program, Faculty of Dentistry, The Autonomous University of San Luis Potosí, SLP, Mexico., González-Amaro Ana ,   Endodontics Postgraduate Program, Faculty of Dentistry, The Autonomous University of San Luis Potosí, SLP, Mexico., Muñoz-Viveros Carlos ,   Kavo Kerr group, Orange County, California, United State, Ducoing-Hernández Francisco ,   Endodontics Postgraduate Program, Faculty of Dentistry, The Autonomous University of San Luis Potosí, SLP, Mexico.
Published: April 2020

Endodontic treatment consists of the cleaning and disinfecting the root canal system, which is achieved using adequate mechanical instru-mentation and chemical irrigation. Endodontic microorganisms are present in root canals in the form of a biofilm, and their elimination ensures the success of endodontic treatment. Irrigation is a key factor contributing to the elimination of this intraconduct biofilm, and different irrigator agents and irrigation techniques, such as irrigation with negative apical pressure, a novel automated irrigation mechanism based on suction intraconduct, have been used. In this study, we evaluated the ability of a negative apical pressure system with different concentrations of sodium hypochlorite and durations to reduce the microbial load. Materials and Methods: An intraradicular biofilm composed of Enterococcus faecalis and Candida albicans was generated during twenty-one days of static culture on one hundred mesio-vestibular roots of upper molars with complex curvatures greater than 30°C, and the roots were classified in six groups with different concentrations and contact times of sodium hypochlorite. Subsequently, the reduction in the microbial load was measured with McFarland scale and the enumeration of colony forming units and was evaluated with scanning electronic microscopy. Results: We observed a significant difference in the reduction of the microbial load prior to instrumentation compared with postinstrumentation between the groups treated with 2.25% and 5.25% NaOCl for 30, 60 and 90 seconds of contact time (p<0.05), but we did not observe differences in the reduction of microbial load between different contact times and concentrations of sodium hypochlorite employed (p>0.05). Conclusion: Negative apical pressure is a good option for irrigation in endodontics, as it allows the passage of the irrigation fluid along the total length of the root canal and produces a better antimicrobial effect.
Orofacial space infections, etiology, microbiological susceptibility and surgical management
Authors:   Ghazi al-Hariri Surgical Specialities Hos-pital, Baghdad, Iraq., Sulaiman Noor Abdullah , Issa Sabah Abdulaziz ,   Ghazi al-Hariri Surgical Specialities Hos-pital, Baghdad, Iraq., Razzak Najwa Abdul ,   Ghazi al-Hariri Surgical Specialities Hos-pital, Baghdad, Iraq.
Published: April 2020

Orofacial infections are considered as one of most common infections and need rapid and adequate treatment as they affect a very delicate region and are associated with serious life-threatening complications. Orofacial infections can be either odontogenic that is with an origin in teeth and associated structures or non-odontogenic, not associated with teeth, can affect facial spaces and spread from one space to another, so a good knowledge about diagnosis and treating these infections is of utmost importance, and can include both non-surgical and surgical treatment. The aim of our study was to determine the most common cause of orofacial infections, the most common bacterial microorganisms and their antibiotic susceptibility. Materials and Methods: A descriptive study was undertaken in the Department of Oral and Maxillofacial Surgery, Al-Shaheed Ghazi Al-Hariry Hospital, Baghdad, Iraq from 1st January to 30th September 2015. This study included 45 patients with different forms of orofacial infections; data regarding age, gender, underlying cause, facial space involvement, presenting signs were collected through history, clinical examination and radiographs, incision and drainage with swab sample for culture and sensitivity test was performed. Results: Patients with orofacial infections showed a female to male ratio of 1.25:1. The mean age was 32.8 years. Most of the patients were in their 4th decade of life (27%). Most infections were odontogenic in origin (62%), the most common facial space involved was submandibular (65%), the most common isolated microorganism was Streptococcus pyogenes (59%), and most patients were treated using an extra-oral surgical approach (78%). Antibiotics to which bacterial isolated showed the most sensitivity were netilmicin, cefoperazone and rifampicin (91%). Pain and limitation of mouth opening gradually decreased in most of patients during the two weeks follow up period. Conclusion: Orofacial infections were more common in females, in the third and fourth decade of life, were odontogenic in origin, were mostly caused by Streptococcus pyogenes, and most isolates were susceptible to netilmicin, cefoperazone and rifampicin. Pain and trismus decreased over two weeks post-treatment.
Frequency of high-risk genotypes of human papilloma virus in oral lesions
Authors:   Universidad Metropolitana de Barranquilla, Colombia, Rebolledo-Cobos Martha , Quintero Luz ,   Universidad Metropolitana de Barranquilla, Colombia, Echeverría Tatiana ,   Universidad Metropolitana de Barranquilla, Colombia, Pertúz José Ángel ,   Universidad Metropolitana de Barranquilla, Colombia, Bettin Alfonso ,   Universidad Metropolitana de Barranquilla, Colombia
Published: April 2020

Some genotypes of the human papilloma virus (HPV) in the oral cavity cause genetic instability that may lead to cancer. Clinical and histological diagnoses are key tools; however, molecular techniques allow predicting, detecting and monitoring the disease. Objective: To identify the frequency of four high-risk HPV genotypes and their association with lesions in the oral cavity. Materials and Methods: Descriptive cross-sectional study with a sample of 48 patients diagnosed with hyperplastic lesions and others currently classified as potentially malignant disorders (PMDs) of the oral cavity, who underwent biopsies, histopathological analysis, and HPV16, 18, 31, and 45 detection and genotyping by polymerase chain reaction (PCR). Results: Epithelial hyperplasia was the most frequent lesion found in 45.8% (n=22) of patients. Nicotine palatinus and leukoplakia were found in 8.3% and 6.2%, respectively; oral cancer in 6.2%. The total frequency of HPV was 12.5% (6/48). Oral papilloma was found in 6.1% (3/48), and nicotine palatinus and oral cancer in 2.0% each (1/48). HPV16, HPV31, and HPV45 were detected, while HPV18 was not observed. HPV16 was the most frequent genotype found (4 out of 6 patients), while HPV31 and HPV45 were found in one patient each. Only one genotype per lesion was found. The presence of HPV was associated with lesions (χ2=11.810; p=0.0375). No significant association with age and gender was found. Conclusion: High-risk HPV continues to be present in oral lesions. The HPV16 viral genotype was the most frequent in the studied lesions.
Efficacy of copper sulphate on Candida albicans on heat-polymerized acrylic resin
Authors:   Patología y Diagnóstico Oral, Facultad de Odontología, Universidad de Valparaíso, Valparaíso, Chile, Huerta Elisa , Gorup Daisy ,   Patología y Diagnóstico Oral, Facultad de Odontología, Universidad de Valparaíso, Valparaíso, Chile., Manríquez Manuel ,   Patología y Diagnóstico Oral, Facultad de Odontología, Universidad de Valparaíso, Valparaíso, Chile., Cruz-Choappa Rodrigo ,   Laboratorio de Micología, Facultad de Medicina, Universidad de Valparaíso, Valparaíso, Chile., Vieille Peggy ,   Laboratorio de Micología, Facultad de Medicina, Universidad de Valparaíso, Valparaíso, Chile., González-Arriagada Wilfredo ,   Patología y Diagnóstico Oral, Facultad de Odontología, Universidad de Valparaíso, Valparaíso, Chile.,   Centro de Investigación Interoperativo en Ciencias Odontológicas y Médicas (CICOM), Universidad de Valparaíso, Valparaíso, Chile.
Published: April 2020

The ageing of population is increasing, and a great percentage of these patients wear removable prostheses, and can suffer denture stomatitis, a condition that has been associated with candidiasis. Aims: To evaluate in vitro the effectiveness of Copper Sulfate against Candida albicans in samples of heat-polymerized acrylic resin, compared to nystatin, sodium hypochlorite and chlorhexidine. Materials and Methods: Initially, the minimum inhibitory concentration (MIC) of copper sulfate for Candida albicans was determined by microdilution. Then, 54 resin samples were divided into 6 treatment groups corresponding to Nystatin 100.000 UI, Sodium Hypochlorite 0.5%, chlorhexidine 0.12%, Copper Sulfate 4.7µg/ml, Copper Sulfate 9.4µg/ml and physiological saline solution, in which samples were submerged for 6 hours. Resin samples were then washed and cultured on solid media at 37°C for 72 hours. The number of colony-forming units was determined using a Quebec colony counter. The statistical analysis was performed using the Kruskal-Wallis test and the Mann-Whitney U test. Results: Copper sulfate at a concentration of 9.4μg/ml presented a similar effectiveness as the other control products regarding the reduction in the number of colonies of Candida albicans post-treatment. Conclusion: The effectiveness of copper sulfate against Candida albicans on acrylic resin was similar to that of nystatin, sodium hypochlorite and chlorhexidine
Flexural strength of polyether ether ketone high-performance polyether in comparison with base metal alloy and Zirconia ceramic
Authors:   Department of Prosthodontics, Dental Faculty, Qazvin University of Medical Sciences, Qazvin, Iran., Barjini Negar , Katebi Talayeh ,   Department of Prosthodontics, Dental Faculty, Qazvin University of Medical Sciences, Qazvin, Iran., Bahadoran Rohham ,   Department of Prosthodontics, Dental Faculty, Qazvin University of Medical Sciences, Qazvin, Iran., Youssefi Navid ,   Department of Prosthodontics, Dental Faculty, Qazvin University of Medical Sciences, Qazvin, Iran.
Published: April 2020

Optimal flexural strength is a critical prerequisite for prosthetic frameworks. This study aimed to assess the flexural strength of polyether ether ketone (PEEK) polymer compared to a base metal alloy and high-strength Zirconia ceramic commonly used in prosthodontic treatments. Materials and Methods: In this in vitro, experimental study, 10 bar-shaped samples measuring 18×5×2mm were fabricated of each the PEEK polymer, nickel-chromium base metal alloy and zirconia ceramic. Half of the samples in each group were subjected to 5000 thermal cycles between 5°C - 55°C with 20 seconds of dwell time and 20 seconds of transfer time to simulate oral conditions. All samples then underwent three-point bending test. Two-way ANOVA followed by Tukey’s test were applied to compare the mean flexural strength of the groups with and without thermocycling at 0.05 level of significance. Results: The flexural strength of base metal alloy, Zirconia and PEEK was 1387.70±45.50 MPa, 895.13±13.99 MPa and 192.10±5.37 MPa, respectively. The difference was significant among the groups (p<0.001). Thermocycling had no significant effect on the flexural strength of samples in any group (p=0.306). Conclusion: PEEK high-performance polymer had a lower flexural strength than base metal alloy and Zirconia ceramic, and its flexural strength was not affected by thermocycling. PEEK seems to be able to resist masticatory forces in the oral cavity pending further in vitro and clinical studies.
Effects of denture cleansers on denture material properties —An observational Case—Control Study
Authors:   Darshan Dental College and Hospital, Udaipur, India., Bhagat Pramod Kumar , Patel Naiya ,   University of Louisville, School of Public Health, Louisville, USA., Patel Neel ,   Long Island University, Brooklyn, USA
Published: April 2020

Everyday use of denture cleansers to prevent microbial colonization on dentures can affect the properties of the denture base material. Limited literature is available on the effects of denture cleanser on reinforced resins. This study aimed to evaluate and compare the effect of denture cleanser on the flexural and impact strength of conventional and reinforced heat cure acrylic resins. Materials and Methods: Rectangular shaped specimens were prepared for flexural and impact strength as per ISO 1567. The denture base resins used included conventional, high impact, nylon fiber reinforced and glass fiber reinforced heat cure acrylic resins. They were further categorized into subgroups A and B depending on immersion in distilled water or denture cleanser (3.8% sodium perborate based). The flexural strength and impact strength of specimens were measured. The study design is a observational case-control study. SPSS version 25 statistical analysis software was used, and the STROBE statement checklist was followed. Results: The mean flexural strength was highest for glass fiber reinforced heat cure resin followed by conventional heat cure resin, high impact heat cure resin and nylon reinforced heat cure resin, respectively. The mean impact strength was highest for high impact heat cure resin followed by glass fiber reinforced heat cure resin, conventional heat cure resin, and nylon fiber-reinforced resin respectively.Conclusion: All the denture base resins tested exhibited a decrease in flexural and impact strength following use of a denture cleanser.
Türkiye’de Faaliyet Gösteren Bireysel Emeklilik Şirketlerinin Performansının Entropi ve COPRAS Yöntemi ile Değerlendirilmesi
Authors: ACER Aynur , GENÇ Tolga , DİNÇER Erdal
Published: April 2020

Bireysel emeklilik sistemi Türkiye’de gönüllülük esasına dayanan, katılımcıları uzun vadeli araçlara yönlendirerek yaşlılıktaki gelirlerini garanti altına almayı amaçlayan ve sosyal güvenlik sisteminin finansal yükünü azaltarak sosyal katılımcıların yaşam kalitesinin artmasını hedefleyen bir sistemdir. Bu çalışmada 2018 yılı verileri kullanılarak Türkiye’de faaliyet gösteren 17 bireysel emeklilik şirketinin performansı katılımcı sayısı, katılımcı fon tutarı, katkı payı tutarı, devlet katkısı fon tutarı ve emeklilik teknik gider kriterleri ele alınarak Entropi ve COPRAS yöntemiyle analiz edilmiştir. Analiz sonucunda katılımcı fon tutarı kriteri en yüksek önem derecesine sahip kriter olarak belirlenmiştir.
Hızlı ofis zorlanma değerlendirmesi yönteminin entegre bir çok kriterli karar verme yaklaşımıyla geliştirilmesi
Authors: Kılıç Delice Elif , CAN Gülin Feryal , KAHYA Emin
Published: April 2020

Günümüzde işe bağlı kas
iskelet sistemi rahatsızlıkları  (KİSR)  giderek artmakta ve bu durum hem iş
verimliliğini düşürmekte hem de çalışan sağlığını olumsuz etkilemektedir. Bu
nedenle KİSR’nın ortaya çıkmadan önce önlenmesi amacıyla çalışma ortamının ergonomik
ilkelere dayanılarak tasarlanması önem taşımaktadır. Bununla birlikte, işletmelerde,
ergonomik açıdan tasarım iyileştirme çalışmalarına başlamadan önce çalışanların
zorlanma düzeyinin yüksek olduğu birimlerin ve bu birimlerdeki ofis
bileşenlerinin belirlenmesi gerekmektedir. 
Bu çalışmada, ofis bileşenlerinin neden olduğu zorlanma düzeylerinin
belirlenmesi ve bu düzeylere göre öncelikli olarak ergonomik iyileştirme
yapılacak birimlerin tespiti için Hızlı Ofis Zorlanma Değerlendirmesi (Rapid
Office Strain Assesment-ROSA) yöntemi temelinde entegre bir çok kriterli karar
verme (ÇKKV) yaklaşımı önerilmiştir. Önerilen yaklaşımda, ofis bileşenleri
nedeniyle oluşan zorlama düzeyleri ROSA yöntemine göre değerlendirilmiş, ofis
bileşenlerinin önem derecelerinin belirlenmesinde ÇKKV yöntemlerinden biri olan
Adım Adım Ağırlık Değerlendirme Oran Analizi (Step-Wise Weight Assessment Ratio
Analysis-SWARA) yöntemi kullanılmıştır. Zorlanma düzeylerine göre birimlerin
sıralanmasında ise Ağırlıklandırılmış Bütünleşik Toplam Çarpım Değerlendirmesi
(Weighted Aggregated Sum Product Assessment–WASPAS) yöntemi uygulanmıştır.
Önerilen yaklaşım, havacılık sanayisinde faaliyet gösteren bir firmada
uygulanmış ve zorlanma düzeyini arttıran en önemli ofis bileşeni sandalye
olarak belirlenirken, İmalat Mühendisliği ve ARGE birimleri ise zorlanma düzeyi
en yüksek birimler olarak tespit edilmiştir. Duyarlılık analizi sonucunda ise
birimlerin zorlanma düzeylerine ait sıralamaların değişimi değerlendirilmiştir.
Yerel olmayan ortalamalar yaklaşımı ile yere nüfuz eden radar görüntülerinde kargaşa giderme
Authors: KUMLU Deniz , ERER İşın
Published: April 2020

Bu
makalede, yere nüfuz eden radar (YNR) görüntülerinde mevcut olan kargaşayı
gidermek için yerel olmayan ortalamalar (YOO) süzgeci tabanlı yöntemin
kullanılması önerilmiştir. YOO süzgeci diğer yerel ortalama alan süzgeçlerden
farklı olan bilateral süzgecin genellemesi olarak düşünülebilir, çünkü YOO
süzgeci ilgili pikselin ağırlığını bulurken görüntüde benzer komşu piksellerin
değerlerine bakarak karar verir. Bu çalışmada, YOO süzgeci  çok ölçekli-yönlü olacak şekilde
genişletilmiş ve bu yeni yönteme çok-ölçekli yönlü yerel olmayan ortalamalar
(ÇYYOO) süzgeci ismi verilmiştir. Daha sonra, bu yöntem YNR görüntüleri içinde
bulunan hedef ve kargaşaya ait doğal geometrik bilgileri yakalamak amacıyla görüntüleri
yaklaşım ve detay alt uzaylara ayrıştırmak için kullanılmıştır. Ayrıştırma
yapıldıktan sonra, kargaşa sadece diyagonal bilgi içeren alt uzay görüntülerini
koruyarak giderilmiştir.  Daha sonra, kargaşası
giderilmiş YNR görüntüsü elde etmek için geriye kalan alt uzaylara ters dönüşüm
uygulanır. Önerilen yöntem benzetim ve gerçek YNR veri seti kullanılarak
literatürde var olan mevcut yöntemler ve yeni önerilen komşuluk filtresi
tabanlı yöntem ile alıcı işletim karakteristik (AİK) eğrileri üzerinden karşılaştırılmış,
üstünlüğü kanıtlanmıştır.
Gümüş nanopartiküller eşliğinde katalitik ozonlama prosesleri ile sucul ortamdan doğal organik maddelerin giderimi: Ozonlama ürünlerinin belirlenmesi
Authors: ALVER Alper , ALTINIŞIK TAĞAÇ Aylin , KILIÇ Ahmet
Published: April 2020

Katalitik ozonlama proseslerinde nihai hedef kirleticinin son ürüne okside edilmesidir; fakat zincirleme oksidasyon reaksiyonları sonucunda bazı ara ürünler son ürüne kadar okside olamamaktadır. Bu oksidasyon ara ürünlerinin dezenfeksiyon işlemine tabi tutulması sonrasında ise daha toksik/kanserojenik/mutajenik ara ürünler meydana gelebilmektedir. Katalitik ozonlama prosesleri üzerine literatürde yapılan birçok çalışmada “hedef kirleticilerin” giderim verimliliği ve giderim maliyeti üzerine yoğunlaşılmış olsa da oluşan ara ürünler çoğu çalışmada takip edilmemiştir. Bu sebeple katalitik ozonlama proseslerinin nihai bertaraf yöntemi olarak kullanılabilirliği halen sorgulanmaktadır. Bu çalışmada, yüzeysel sulardaki doğal organik maddeleri temsilen sentetik olarak hazırlanmış hümik asit çözeltilerinin gümüş bazlı nanopartiküllerle zenginleştirilmiş montmorillonit katalizörlüğünde ozonlama prosesleri ile arıtılabilirliği araştırılmıştır. Katalizör dozlarının değiştirildiği arıtım çalışmalarında doğal organik maddenin bozunumu ve alifatik-aromatik yapısındaki değişimleri izlenilmiştir. Arıtma işlemi sonrasında çıkış suları klorla dezenfeksiyon işlemine tabi tutularak oluşan Trihalometan (THM) ve Haloasetik Asit (HAA) türleri kantitatif olarak diğer oksidasyon ara ürünleri ise kalitatif olarak tespit edilmiştir.
Pillowcase & rubber band DIY face mask v1
Authors: Turnsek Jernej
Published: April 2020

Wearing a face mask helps stop the spread of the new coronavirus. This protocol describes a very simple way to make one at home using a cotton pillowcase, 2 rubber bands, and a minute of your time.
Kronik Hepatit C Enfeksiyonunda Karaciğer Histopatolojik Evreleri ile Albümin-Bilirübin Skoru Arasındaki İlişki
Authors: ERDAL Harun , BAKIR Ayfer , GÜNEY Mustafa , GÜNAL Armağan , ERÇİN Cemal , UYGUN Ahmet , GÜLŞEN Mustafa
Published: April 2020

Giriş ve Amaç: Karaciğer fibrozunu değerlendirmek için birçok invaziv olmayan biyokimyasal indeksler geliştirilmiştir. Bu çalışmada allbümin-bilirübin skorunun kronik hepatit C virüs enfeksiyonunda gelişen karaciğer fibrozunun tahmininde karaciğer biyopsisine alternatif bir tanı yöntemi olup olamayacağının değerlendirilmesi ve diğer biyokimyasal belirteçler olan fibrozis-4 ve aspartat aminotransferaz/trombosit oran indeksi ile karşılaştırılması amaçlanmıştır. Gereç ve Yöntem: Yaş aralığı 20 ile 82 arasında değişen, karaciğer biyopsisi yapılmış, 27’si erkek ve 11’i kadın toplam 38 kronik hepatit C virüs enfeksiyonlu hasta değerlendirildi. Albümin-bilirübin, fibrozis-4 ve aspartat aminotransferaz/trombosit oran indeks skorları hesaplandı. Albümin-bilirübin skorunun fibrozis evre >2 ve >4’ü ayırt etme yeteneği ROC analizi ile değerlendirildi ve fibrozis-4 ve aspartat aminotransferaz/trombosit oran indeks skoru ile karşılaştırıldı. Bulgular: Albümin-bilirübin skorunun fibrozis evre >2 ve fibrozis evre ≥4 tanısı için ROC eğrisi altında kalan alan sırasıyla 0.767 (95% Cl: 0.564-0.969) ve 0.956 (95% Cl: 0.889-1.000) bulunurken, fibrozis-4 için 0.863 (95% Cl: 0.714-1.000) ve 0.926 (95% Cl: 0.833-1.000), aspartat aminotransferaz/ trombosit oran indeks skoru için 0.667 (95% Cl: 0.450-0.884) ve 0.640 (95% Cl: 0.378-0.901) idi. Sonuç: Bulgulara göre albümin-bilirübin skorunun fibrozis evre >2 ve ileri karaciğer fibrozunu (fibrozis evre >4) tahmin edebileceği değerlendirilmiştir. Albümin-bilirübin skorunun fibrozis tahminindeki performansı, aspartat aminotransferaz/trombosit oran indeks skoru ve fibrozis-4 ile karşılaştırıldığında sonuçların benzer olduğu ancak fibrozis evre >2 tahmininde fibrozis-4’ün, fibrozis evre ≥4’de ise aspartat aminotransferaz/ trombosit oran indeks skorunun daha güvenilir sonuç verdiği değerlendirilmiştir.
Impact of Television Advertisements on Children’s Mental and Physical Development in Bangladesh
Authors: Islam Mazidul , Goni Md. Usman
Published: April 2020

Nowadays television advertisement is becoming a day to day activity of passing the time of the people and it is largely used to influence viewers' purchase decisions. But there are a lot of negative and positive impacts of TV ads on children. This study aims to know both impacts of ads on the children of Bagerhat Sadar Upazila in Bangladesh by collecting the data from children and their parents. This research was quantitative and exploratory in nature. The survey method was used for conducting the study. From the total number of the residents of Bagerhat Sadar Upazila, 125 families were collected by following proportionate systematic random sampling. The study shows that most of the respondents watch television on holiday and spend two to four hours to watch the television. The study presents that the maximum number of respondents is attracted to toys advertisements on television. The study also reveals that the majority of the respondent’s behavior changes after watching the advertisements. The study also discloses that highest number of respondents wishes to buy the products after watching the advertisements and they inform them of their parents. The study also shows that most of the respondents want to act what they watch on television.
Evaluación de Pensamiento Crítico en estudiantes de Trabajo Social de la región de Atacama-Chile
Authors: Betancourth-Zambrano Sonia , Martínez-Daza Viviana , Tabares-Díaz Yuranny Alejandra
Published: April 2020

El pensamiento crítico es un conjunto de habilidades que permiten al ser humano mejorar su pensamiento, autorregularse y tomar decisiones a partir de lo que piensa y cree. La presente investigación es cuantitativa de tipo descriptivo, con el objetivo de evaluar el pensamiento crítico en 119 estudiantes de Trabajo Social de una universidad estatal al norte de Chile, de los cuales el 19% eran hombres y el 81% mujeres, con un rango de edad entre los 18 a 31 años. Los resultados señalan que 27% de los estudiantes tienen un pensamiento crítico muy alto, 25% nivel medio, 23% nivel bajo, 18% nivel alto y 7% nivel muy bajo. Igualmente, se destaca que los estudiantes de mayor edad, procedentes de instituciones educativas públicas e hijos de padres con niveles de formación de postgrado tienen mejor pensamiento crítico. En este sentido, es imprescindible implementar en la educación superior programas y metodologías que estimulen en el estudiante el desarrollo de habilidades de pensamiento crítico, así como la adquisición de una postura reflexiva para la resolución de problemas académicos y sociales.
Evolución del marketing experiencial: una aproximación teórica a su definición - Revisión Sistemática de Literatura
Authors: Sabogal Russi Luisa Fernanda , Rojas-Berrio Sandra Patricia
Published: April 2020

El propósito de esta investigación fue analizar la actividad científica que ha girado en torno al marketing experiencial, a partir de una Revisión Sistemática de Literatura cuya ventana de observación fue el periodo comprendido entre el 2000 y el 2019. La ecuación de búsqueda arrojó 236 documentos en Scopus y 309 en Web of Science, que una vez depurados resultaron un total de 522 documentos. Para visualizar la información, se utilizó la herramienta VoSViewer lo que permitió representar las relaciones existentes, así mismo, se hizo uso del software Tree of Science (ToS) para determinar la jerarquización genealógica de la literatura científica. Los resultados muestran cuáles son los antecedentes, los temas de interés para los académicos, los países con mayor trayectoria de investigación en el área y las redes de trabajo colaborativo, así como, los autores y estudios más relevantes en este campo y las tendencias del marketing.
Feto-maternal outcome in patients with peripartum cardiomyopathy: a 5-year study in a tertiary care hospital in Kolar district
Authors: Singh Sneha , M. Munikrishna , S. R. Sheela
Published: April 2020

Background: Peripartum cardiomyopathy (PPCM) is a disorder of unknown cause in which initial left ventricular systolic dysfunction and symptoms of heart failure occur between the last month of pregnancy and the ﬁrst 5 months postpartum. PPCM remains a diagnosis of exclusion. There have been numerous proposed causes including hormonal abnormalities, inflammation, viral pathogens, autoimmune response, and genetic predisposition. Aim of study was to study the clinical profile, risk factors, and the management along with obstetric and perinatal outcome, in women with peripartum cardiomyopathy.Methods: This retrospective observational study was conducted on the antenatal women of age group of 18 years to 40 years, admitted in the labour ward of R. L. Jalapa hospital who presented with heart failure in last month of pregnancy till 5 months postpartum, without previously having a heart disease over the 5 year period, January 20 15 to December 2019.Results: Majority of the patients (15/18) presented with complaints of exertional dyspnoea. Mean LVEF at the time of diagnosis was 38.39%. There were 5 (27%) maternal mortality and all of them had global hypokinesia on echocardiography and presented in NYHA class III and IV. Two (11%) out of eighteen patients had intrauterine death, and all the patients who had IUFD belonged to class IV. Four babies (22.22%) had intrauterine growth restriction.Conclusions: The present study came to conclusion that in rural tertiary center, maternal outcome and prognosis was poor as patients presenting to us were majority of them in cardiogenic shock and lower LVEF in terminal stages. The associated risk factors were preeclampsia, anemia and multiple gestation which could also contribute to the poor prognosis which was noticed in the study. Early recognition of the disease is of paramount importance as the clinical manifestations can conceal and can lead to high morbidity and mortality especially within 3 months postpartum.
Retrospective analysis of intrauterine granulocyte colony-stimulating factor in controlled ovarian stimulation with intrauterine insemination cycle
Authors: Nayak Navinchandra R. , T. Madhumeetha , Hegde Mangala Gowri , Aravind Aparna C. , A. Ritu Sharma , K. Shwetha Ballal
Published: April 2020

Background: Persistent thin endometrium affects <1% of patients. Various treatments have been proposed with no satisfactory results. GCSF is one such treatment modality which improves endometrial thickness and implantation. Aim of this study was to analyse the effects of dose and the site of instilling intrauterine G-CSF in COS IUI cycles in patients with unexplained infertility and to note the pregnancy rates among them.Methods: It is a 3-year retrospective study done in obstetrics and gynecology department of AJ Institute of Medical Sciences and Research Centre, that included all unexplained infertility cycles with controlled ovulation stimulation-IUI protocols where for a thin endometrium GCSF was used. The method of ovarian stimulation, the drug and dose used, the trigger for ovulation and the ovarian and endometrial response was noted. The day of the intrauterine GCSF and the dose and the site of instillation was noted. The endometrial response to GCSF the outcome for pregnancy was noted. All the data was analyzed statistically.Results: Significant endometrial response was seen with a dose of 100 mg,150 mg and 300 mg. Pregnancy outcome was better when GCSF was instilled just above the level of the os. GCSF instilled at the level of the fundus increases the possibility of ectopic pregnancy.Conclusions: Instillation of GCSF of 100 mg dosage just above the os; is a safe and effective method for improving the endometrial thickness and increasing pregnancy rate.
Proposed drug interventions for SARS CoV 2 infection
Authors: Mehta Pranshu , M. B. Bharathi
Published: April 2020

As the pandemic has already taken lots of lives across the globe, there’s an urgent need for finding treatment options that might help in protection of infected people by either slowing or preventing the progression of the disease. It’s important to understand the structure of virus, the mechanism by which it enters the host cell, replicates and infects other cells causing progression of the disease. This article focuses on use of already available and approved drugs for treatment of corona virus based on their mechanism of action and the structure and the life cycle of the virus.
Abdominal midline wound closure with small bites versus large bites: a randomized comparative trial
Authors: Sharma Rajat , Kaur Amitpal , Sharma Mohit , Singh Karaninder , Singh Neeti Rajan
Published: April 2020

Background: The optimal strategy of abdominal wall closure after midline laparotomy has remained an issue of ongoing debate to minimize incidence of incisional hernia which occurs in 10 to 23% cases postoperatively. The main objective of the study was to evaluate the efficacy of small bites versus large bites suture technique in reduction of incidence of the complications like pain, wound infection, wound dehiscence, seroma formation and incisional hernia by using polydioxanone no.1.Methods: The present study was conducted on 100 patients undergoing elective surgery who were randomly allocated into group A and B. Group A were the patients in which midline abdominal wound closure was done with small bites and group B were the patients in which midline abdominal wound closure was done with large bites. Then the patients were followed up for 6 months to observe any complications.Results: A mean additional closure time of 9 minutes was seen with the small bites technique. The mean suture length was more in small bites group as compared to large bites technique. There was no difference in the visual analog scale score between the two groups. No significant difference was seen in the incidence of major and minor wound infection postoperatively in both the groups. Small bites technique reduced the incidence of suture sinus and incisional hernia compared to conventional large bites technique.Conclusions: It can be concluded that the small bites suture technique is more effective than the traditional large bites technique for prevention of all post-operative complications.
The usefulness of neutrophil to lymphocyte ratio in febrile seizure
Authors: A. Pooja , Aroor Amitha Rao , Soans Santosh T.
Published: April 2020

Background: Febrile seizure is an event in infancy or childhood, usually occurring between 3 months and 5 years of age associated with fever but without evidence of intracranial infection. The aim of the study was to estimate the usefulness of neutrophil-to-lymphocyte ratio (NLR) in patients with simple and complex febrile seizures.Methods: Retrospective case control   study was done in a paediatric in patients admitted to tertiary care hospital.  Study period   was from January 2017 to December 2019. 200 children were analysed in the study. 100 out of 200 were under control group (febrile children without seizure). Remaining 100 were under case group (children with febrile seizure), 54 out of 100 children had   complex febrile seizure, 46 out of 100 had simple febrile seizure. NLR ratio was done in all children.Results: Total 200 children were analysed in this study.   High NLR ratio   was noted among the cases (87 out of 100) compared to control (30 out of 100) p value = <0.001. Among the cases CFS had high NLR ratio compared to SFS, however p value was not significant (0.072).Conclusions: Children with febrile seizure had high NLR ratio compared to those without seizures. However no significant difference was noted between those with simple febrile seizure and complex febrile seizure   However, larger trials are required   to assess whether higher NLR can be taken as an independent risk factor for febrile seizure.
N-terminal pro brain natriuretic peptide as a marker of myocardial dysfunction in newborns with perinatal asphyxia
Authors: Kariyappa Mallesh , Shivarudrappa Sandesh
Published: April 2020

Background: Perinatal asphyxia refers to a condition during first and second stage of labour in which impaired gas exchange leads to foetal hypoxemia. Perinatal asphyxia causes cardiac dysfunction in 24 to 60 percent of the cases. The reduced cardiovascular reserve is associated with hypoxic brain damage and has high impact on neonatal mortality and adverse neurological outcomes. It has been challenging to diagnose myocardial dysfunction in resource constraint setting. Aim and objective of this study was to Determine N-Terminal Pro BNP concentrations in perinatal asphyxia and correlate with modified Sarnat stages of hypoxic ischemic encephalopathy.Methods: Among 120 Neonates admitted in neonatal intensive care unit with diagnosis of perinatal asphyxia were considered for the study. 2mL of venous blood drawn within 48hours of life was analyzed for quantitative N-Terminal Pro BNP and was correlated with modified Sarnat stages of hypoxic ischemic encephalopathy.Results: A Total of 120 cases of perinatal asphyxia were considered for the study, among which 44 cases had HIE stage 1, 48 had HIE stage 2 and rest 28 had HIE stage 3. The mean and standard deviation of N-Terminal Pro BNP concentrations in stage 1 was 1,502.86±3,581.170 pg/mL, stage 2 was 4,916.31±8,001.674 pg/mL and stage 3 was 8,912.41±13,927.152 pg/mL with significant p value of 0.003.Conclusions: Early N-Terminal Pro BNP concentrations may provide a useful marker for the anticipated severity of myocardial dysfunction.
Knowledge, attitude and practice of mothers and prospective mothers in neonatal care and utilization of perinatal care services
Authors: Pinnamaneni Pawankalyani , Mutyala Joshna , Chodavarapu Ravikumar
Published: April 2020

Background: The present study was done with the aim to study existing knowledge, attitude and practice (KAP) about neonatal care, perinatal care and its services, among mothers (pregnant and lactating mothers).Methods: This cross-sectional study was done among 624 pregnant women and in mothers of newborn in both rural and urban areas around Vijayawada during the period from October 2015 to November 2017. A structured questionnaire reflecting KAP about neonatal care and perinatal care services was used in the study. The collected data was placed in a proforma and analysed.Results: Rural (53.8%) and urban (46.2%) mothers are equally represented in the present study. There is a slight preponderance of lactating mothers (52.2%). Most of the mothers are homemakers (82.1%) and belong to nuclear families (90.1%). There is a considerable deficiency in the knowledge nearly 45% ad practices nearly 40%, related to the number of ANC’s. The proportion of mothers receiving baby’s immunization advice from obstetrician is 18.5% and from paediatrician is 26.4%. Neonatal infection prevention was not advised in 71.3% of mothers and 23.5% mothers receive advice from obstetrician and 19.1% from paediatrician. The practice of staring first breast feed within one hour is not implemented about 88% of mothers. Nearly 30% of the mothers are not keeping the baby warm and nearly 90% of the mothers are not aware of KMC.Conclusions: The findings of the study conclude that there is a need for systematic and planned health education by the paediatrician and obstetrician to increase the KAP among mothers about neonatal health care.