Dizajn maske za lice s UVC-LED zračenjem i njezina djelotvornost protiv uobičajenih klica

During the Covid-19 pandemic, one of the best means of personal protection was using face masks. In this context, the World Health Organization has declared the attempts to produce masks inactivating airborne virus species a welcome initiative. This preliminary study aimed to prove that airborne germs passing through a mask filter cartridge can be destroyed by the rays emitted from UVC LEDs placed in such cartridge. We therefore designed such a face mask and tested the efficiency of UVC LEDs placed in its cartridge against common contaminants, gram-positive Staphylococcus aureus, gram-negative Pseudomonas aeruginosa, and the influenza A/Puerto Rico/8/1934 virus because of its similarity with SARS CoV-2. Eight UVC LEDs with a total power of 75 mW provided sufficient germicidal effect for all three germs. In terms of safety, ozone production released during UVC LED emission was negligible. Our findings are promising, as they show that well-designed UVC-based face masks can be effective against airborne germs, but further research on a greater sample may help us learn more and optimise such face masks.Tijekom pandemije Covida-19 jedan od najboljih oblika osobne zaštite bilo je nošenje maski za lice. U tom je smislu Svjetska zdravstvena organizacija pozdravila pokušaje izrade maski koje ubijaju virusne vrste koje se prenose zrakom. Cilj je ovoga preliminarnog istraživanja bio dokazati da se zrakom nošene klice koje prolaze kroz filtarske uloške mogu uništiti zračenjem UVC ledica smještenih u takve uloške. Stoga smo osmislili masku za lice s tom namjenom i iskušali djelotvornost UVC ledica protiv uobičajenih izvora zaraza: gram-pozitivnoga Staphylococcus aureus, gram-negativnoga Pseudomonas aeruginosa i virusa influence A/Puerto Rico/8/1934 zbog njegove sličnosti s virusom SARS CoV-2. Osam UVC ledica ukupne snage 75 mW iskazale su dovoljan germicidni učinak protiv svih triju klica. U smislu sigurnosti primjene, ozon proizveden tijekom UVC-LED zračenja pokazao se zanemarivim. Naši su rezultati obećavajući jer pokazuju da dobro osmišljene maske za lice s UVC zračenjem mogu biti djelotvorne protiv zrakom nošenih klica, ali će tek daljnja istraživanja na većem uzorku pomoći da doznamo više i usavršimo takve maske za lice

Changes in kernel chemical composition during nut development of three Italian hazelnut cultivars

This research focused on the variation of the kernel and pellicle (seed coat) constituents during nut growth, from early development to maturity.Material and methods. Nuts of three hazelnut cultivars widely grown in Italy: \u2018Tonda Gentile Romana\u2019, \u2018Tonda di Giffoni\u2019 and \u2018Nocchione\u2019. were randomly sampled weekly, from the same trees, starting from the first week of July 2007 (day of the year: DOY = 186) until the beginning of September (DOY = 249), at harvest time. Oil content increased continuously during the development of the kernel, from 30\u201335 g 100 g 121 dry weight (DW) at the beginning of July, to 61\u201368 g 100 g 121 DW in the first week of September. Total monounsaturated fatty acids were the main group of fatty acids in the oil and oleic acid was the most predominant one, showing slight variations depending on the cultivar and kernel growth stage. Nitrogen content in the kernel decreased continuously during development, from 4.2 g 100 g 121 DW to 2.9 g 100 g 121 DW on average among the cultivars. Soluble sugars, mainly sucrose, showed a wide fluctuation until late July, and the content observed in the mature seed was about 5 g 100 g 121 DW in all cultivars. The organic acids, mainly represented by malic acid, showed a large decrease during the early stages (July), and reached on average a content of about 0.3\u20130.4 g 100 g 121 DW at the mature stage. Starch content for all cultivars was highest at the first sampling date, then decreased rapidly, coinciding with the initial kernel expansion stage. Starch levels then increased to a second peak in early August, then rapidly decreased again, followed by a gradual decline up to the time of nut ripening. The total phenol content was mainly concentrated in the pellicle and showed wide variation during the nut development both in the kernel and pellicle. The complexity of these dynamics can explain the different kernel taste in immature and mature states, and highlights the possibilities of optimizing the orchard management and harvesting time

Characteristics of food allergy in children: National multicenter study

Conference: Congress of the European-Academy-of-Allergy-and-Clinical-Immunology (EAACI) Location: Lisbon, PORTUGAL Date: JUN 01-05, 2019Background : Food allergies impose a significant burden on the life of the child and the family. In this study, to determine the demographic characteristics of food allergies, we investigated the characteristics of patients with food allergies in different regions of Pediatric Allergy- Immunology departments in Turkey. Method : Turkey ' s National Study of Allergy and Clinical Immunology Society has conducted a Study Group on Food Allergies. 25 centers participated in this multicenter, cross- sectional and descriptive study.European Academy of Allergy and Clinical Immunolog

EPIdemiology of Surgery-Associated Acute Kidney Injury (EPIS-AKI) : Study protocol for a multicentre, observational trial

More than 300 million surgical procedures are performed each year. Acute kidney injury (AKI) is a common complication after major surgery and is associated with adverse short-term and long-term outcomes. However, there is a large variation in the incidence of reported AKI rates. The establishment of an accurate epidemiology of surgery-associated AKI is important for healthcare policy, quality initiatives, clinical trials, as well as for improving guidelines. The objective of the Epidemiology of Surgery-associated Acute Kidney Injury (EPIS-AKI) trial is to prospectively evaluate the epidemiology of AKI after major surgery using the latest Kidney Disease: Improving Global Outcomes (KDIGO) consensus definition of AKI. EPIS-AKI is an international prospective, observational, multicentre cohort study including 10 000 patients undergoing major surgery who are subsequently admitted to the ICU or a similar high dependency unit. The primary endpoint is the incidence of AKI within 72 hours after surgery according to the KDIGO criteria. Secondary endpoints include use of renal replacement therapy (RRT), mortality during ICU and hospital stay, length of ICU and hospital stay and major adverse kidney events (combined endpoint consisting of persistent renal dysfunction, RRT and mortality) at day 90. Further, we will evaluate preoperative and intraoperative risk factors affecting the incidence of postoperative AKI. In an add-on analysis, we will assess urinary biomarkers for early detection of AKI. EPIS-AKI has been approved by the leading Ethics Committee of the Medical Council North Rhine-Westphalia, of the Westphalian Wilhelms-University Münster and the corresponding Ethics Committee at each participating site. Results will be disseminated widely and published in peer-reviewed journals, presented at conferences and used to design further AKI-related trials. Trial registration number NCT04165369

The Fear of Missing Out (FoMO) in the Workplace: Scale Adaptation Study

anemonİşyerinde Gelişmeleri Kaçırma Korkusu, çalışanların işten uzakta veya işten ayrıldığında işle ilgili değerli fırsatları kaçırabileceği endişesi olarak ifade edilebilir. Bu çalışmanın amacı, İşyerinde Gelişmeleri Kaçırma Korkusu Ölçeği’ni (Budnick, Rogers ve Barber, 2020) Türkçeye geçerlik ve güvenirliğini sağlayarak uyarlamaktır. Anket yöntemiyle 217 katılımcıdan toplanan veriler kullanılarak analizler yapılmıştır. Açımlayıcı faktör analizi sonucunda, 10 madde ve iki boyuttan (Bilgisel ve İlişkisel Dışlanma) oluşan bir ölçme aracı bulunmuştur. Doğrulayıcı faktör analizi sonucunda 10 madde ve iki boyutu gösteren modelin indeks değerlerinin iyi uyuma sahip olduğu görülmüştür. Ölçeğin düzeltilmiş madde toplam korelasyonları istenen düzeyde bulunmuştur. Sonuç olarak, ölçeğin Türkçeye uyarlanmış yapısının güvenilir ve geçerliliği olan bir ölçme aracı olduğu düşünülmektedir. Türkçe literatürde daha önce uyarlanmamış olan işyerinde gelişmeleri kaçırma korkusu ölçeğine ilişkin maddeler çalışmada yer almaktadır.The purpose of this study Fear of Missing Out at the workplace can be expressed as a concern that employees may miss valuable business opportunities when they are away from work. The aim of this study is to adapt the Fear of Missing Out in the Workplace Scale (Budnick, Rogers ve Barber, 2020) to Turkish by ensuring its validity and reliability. With the survey method, analyzes were made using the data collected from 217 participants. As a result of exploratory factor analysis, a measurement tool consisting of 10 items and two dimensions (Information and Relational Exclusion) was also found. Confirmatory factor analysis showed that the model showing 10 items and two dimensions had good fit index values. Corrected item-total correlations of the scale were found at the desired level. As a result, the structure of the scale adapted to Turkish is considered to be a reliable and valid measurement tool. Items of the fear of missing out in the workplace scale, which has not been adapted in the Turkish literature before, are included in the study.76164

İNTERNET ÇAĞINDA SANAL ORTAM YALNIZLIĞI: ÜNİVERSİTE ÖĞRENCİLERİ ÜZERİNE BİR ARAŞTIRMA

Bu çalışmanın konusunu “yalnız olma durumu, kimsesizlik” şeklinde ifade edilen yalnızlık ve “insanların gerçek sosyal yaşamdan ayrılarak sanal sosyal aktivitelere yönelmeye başladığını gösteren” şeklinde ifade edilen sanal yalnızlık oluşturmaktadır. Bu çalışmada, Süleyman Demirel Üniversitesi’nde eğitim gören İşletme Bölümü öğrencilerinin sanal ortam yalnızlığı düzeylerinin belirlenmesi amaçlanmıştır. Araştırmanın evreni, Süleyman Demirel Üniversitesi İktisadi ve İdari Bilimler Fakültesi İşletme Bölümü’nde öğrenim gören birinci, ikinci, üçüncü ve dördüncü sınıf öğrencilerinden (328 kişi) oluşmaktadır. Veri toplama aracı olarak Korkmaz ve arkadaşları (2014) tarafından geliştirilen “Sanal Ortam Yalnızlık Ölçeği (SOYÖ)” kullanılmıştır. Araştırma sonucunda erkek öğrencilerin, kız öğrencilere göre daha fazla sanal paylaşımda bulundukları; erkek öğrencilerin, kız öğrencilere göre sanal ortamda daha sosyal oldukları sonucuna varılmıştır. Yine araştırma sonucunda öğrencilerin şiddetli olmasa da sanal ortam yalnızlığı yaşadıkları söylenebilir