A Web-Based Intervention for Social Media Addiction Disorder Management in Higher Education: Quantitative Survey Study.

BACKGROUND: Social media addiction disorder has recently become a major concern and has been reported to have negative impacts on postgraduate studies, particularly addiction to Facebook. Although previous studies have investigated the effects of Facebook addiction disorder in learning settings, there still has been a lack of studies investigating the relationship between online intervention features for Facebook addiction focusing on postgraduate studies. OBJECTIVE: In an attempt to understand this relationship, this study aimed to carry out an investigation on online intervention features for effective management of Facebook addiction in higher education. METHODS: This study was conducted quantitatively using surveys and partial least square-structural equational modeling. The study involved 200 postgraduates in a Facebook support group for postgraduates. The Bergen Facebook Addiction test was used to assess postgraduates' Facebook addiction level, whereas online intervention features were used to assess postgraduates' perceptions of online intervention features for Facebook addiction, which are as follows: (1) self-monitoring features, (2) manual control features, (3) notification features, (4) automatic control features, and (5) reward features. RESULTS: The study discovered six Facebook addiction factors (relapse, conflict, salience, tolerance, withdrawal, and mood modification) and five intervention features (notification, auto-control, reward, manual control, and self-monitoring) that could be used in the management of Facebook addiction in postgraduate education. The study also revealed that relapse is the most important factor and mood modification is the least important factor. Furthermore, findings indicated that notification was the most important intervention feature, whereas self-monitoring was the least important feature. CONCLUSIONS: The study's findings (addiction factors and intervention features) could assist future developers and educators in the development of online intervention tools for Facebook addiction management in postgraduate education

Conduction in ulnar nerve bundles that innervate the proximal and distal muscles: a clinical trial

<p>Abstract</p> <p>Background</p> <p>This study aims to investigate and compare the conduction parameters of nerve bundles in the ulnar nerve that innervates the forearm muscles and hand muscles; routine electromyography study merely evaluates the nerve segment of distal (hand) muscles.</p> <p>Methods</p> <p>An electrophysiological evaluation, consisting of velocities, amplitudes, and durations of ulnar nerve bundles to 2 forearm muscles and the hypothenar muscles was performed on the same humeral segment.</p> <p>Results</p> <p>The velocities and durations of the compound muscle action potential (CMAP) of the ulnar nerve bundle to the proximal muscles were greater than to distal muscles, but the amplitudes were smaller.</p> <p>Conclusions</p> <p>Bundles in the ulnar nerve of proximal muscles have larger neuronal bodies and thicker nerve fibers than those in the same nerve in distal muscles, and their conduction velocities are higher. The CMAPs of proximal muscles also have smaller amplitudes and greater durations. These findings can be attributed to the desynchronization that is caused by a wider range of distribution in nerve fiber diameters.</p> <p>Conduction parameters of nerve fibers with different diameters in the same peripheral nerve can be estimated.</p

5-Hydroxymethylfurfural (HMF) formation during subcritical water extraction

The aim of this study was to investigate the effect of material type (artichoke leave, lemon peel, flaxseed meal), extraction temperature (50, 100, 120, 140, 160, 180, 200 C) and static extraction time (5, 15, 30, 45 min) on 5-hydroxymethylfurfural (5-HMF) formation during subcritical water extraction. 5-HMF content of artichoke leave and lemon peel extracts increased 7.2 and 26.1 times with the rise of extraction temperature from 160 to 180 C for 5 min during subcritical water extraction, respectively. Besides, 5-HMF content of artichoke leave, lemon peel and flaxseed meal extracts increased 1.4, 2.0 and 4.5 times as static extraction time increased from 15 to 45 min at 180 C during subcritical water extraction, respectively. The highest 5-HMF content of artichoke leave and lemon peel extracts were obtained as 58.83 and 231.21 mg/L at 180 C and 45 min, respectively. However, for flaxseed meal, the highest 5-HMF content (222.94 mg/L) was obtained at 200 C and 15 min during subcritical water extraction.Project Nos. 2014.M80.02.03, 2014.M80.02.04 by Artvin Coruh University Scientific Research Project Uni

Predicting the tensile strength, impact toughness, and hardness of friction stir-welded AA6061-T6 using response surface methodology

In this research, an attempt has been made to develop mathematical models for predicting mechanical properties including ultimate tensile strength, impact toughness, and hardness of the friction stir-welded AA6061-T6 joints at 95 % confidence level. Response surface methodology with central composite design having four parameters and five levels has been used. The four parameters considered were tool pin profile, rotational speed, welding speed, and tool tilt angle. Three confirmation tests were performed to validate the empirical relations. In addition, the influence of the process parameters on ultimate tensile strength, impact toughness, and hardness were investigated. The results indicated that tool pin profile is the most significant parameter in terms of mechanical properties; tool with simple cylindrical pin profile produced weld with high ultimate tensile strength, impact toughness, and hardness. In addition to tool pin profile, rotational speed was more significant compared to welding speed for ultimate tensile strength and impact toughness, whereas welding speed showed dominancy over rotational speed in case of hardness. Optimum conditions of process parameters have been found at which tensile strength of 92 %, impact toughness of 87 %, and hardness of 95 % was achieved in comparison to the base metal. This research will contribute to expand the scientific foundation of friction stir welding of aluminum alloys with emphasis on AA6061-T6. The results will aid the practitioners to develop a clear understanding of the influence of process parameters on mechanical properties and will allow the selection of best combinations of parameters to achieve desired mechanical properties

Problematic social media use: results from a large-scale nationally representative adolescent sample

Despite social media use being one of the most popular activities among adolescents, prevalence estimates among teenage samples of social media (problematic) use are lacking in the field. The present study surveyed a nationally representative Hungarian sample comprising 5,961 adolescents as part of the European School Survey Project on Alcohol and Other Drugs (ESPAD). Using the Bergen Social Media Addiction Scale (BSMAS) and based on latent profile analysis, 4.5% of the adolescents belonged to the at-risk group, and reported low self-esteem, high level of depression symptoms, and elevated social media use. Results also demonstrated that BSMAS has appropriate psychometric properties. It is concluded that adolescents at-risk of problematic social media use should be targeted by school-based prevention and intervention programs

MEFV geninde farklı mutasyonları ve genotipleri olan ailesel akdeniz ateşi hastalarında interlökin-1(IL-1) ve interlökin-1 reseptör antagonisti (ILRN1) gen polimorfizmlerinin klinik seyir ve tedavi ile ilişkisi

Giriş: Ailevi Akdeniz Ateşi (FMF) tekrarlayan ateş ve seröz zarların iltihabı ile karakterize resesif geçişli otoinflamatuar bir hastalıktır.AAA tanısı genellikle klinik bulgularla konulmakta ve genetik incelemelerle desteklenmektedir.Moleküler genetik tekniklerin tanıdaki yeri gün geçtikçe artmaktadır. MEFV üzerinde 150'den fazla mutasyon tespit edilmiş ve bu mutasyonlar hastalığın şiddeti ile ilişkilendirilmiştir Ailevi Akdeniz Ateşi klinik heterojeniteye sahip bir hastalıktır .Hastalığın kliniği hastadan hastaya değişmektedir. Aynı MEFV mutasyonuna sahip hastalarda bile hastalığın kliniği geniş bir spektrum sergilemektedir. IL-1B otoinflamatuar hastalıkların ve Ailevi Akdeniz Ateşinin patogenezinde önemli role sahip bir sitokindir.IL-1 B sistemik inflamasyonda majör rol oynar. IL-1B ve onun antagonisti olan IL-1Ra arasındaki dengenin bozulması inflamasyonu tetikler. Çalışmamızda IL1-B ve IL-1Ra gen polimorfizlerinin AAA hastalığının şiddetine ve kolşisin direncine etkisi araştırıldı. Metot: 160 AAA hastası ile 100 sağlıklı çocuk (kontrol grubu) çalışmaya dahil edildi. Hastaların ayrıntılı medikal öykülerini ve demografik verilerini kapsayan olgu rapor formları dolduruldu. Hastalara ait demografik ve tıbbi veriler toplandı. Hasta ve kontrol grubuna ait numunelerde: PCR-RFLP kullanılarak IL-1B + 3953 (C/T) polimorfizmi, PCR kullanarak IL-1Ra VNTR polimorfizimleri çalışılarak genotiplendirildi. Bulgular: Hastaların yaş ortalaması:119.6± 53.4 ay (min-max.: 13-217), semptomlarının başlma yaşı ise ortalama 64±41.1ay (min.-max.: 2-192), tanı yaşları:88.3±7.0 ay (min.-max.: 13-204) olarak saptandı. Tanı gecikme süresi ortalama 24.4 aydı. Hastalarda ve sağlıklı kontrol grubunda IL-1+ 3953 (C/T) ve IL-1Ra VNTR polimorfizimlerinin allel ve genotipleri karşılaştırıldı.IL-1Ra ait ILRN2 genotipinin ve IL-1 B +3953 (C/T) polimorfizmine ait T allel sıklığının AAA hastalarında kontrol grubuna göre artığı gösterildi (p:0.006) (p:0.007) Ancak hastaların kliniklerine etkileri tesbit edilmedi.Ağır hastalık skoru ve kolşisin direnci ile ilişkileri saptanmadı. Sonuç: IL-1B +3953 (C/T) polimorfizmi ve IL-1Ra polimorfizmlerinin kolşisin direnci ile ilişkisi saptanmadı ve bu polimorfizmlerin hastalıkta ağırlaştırıcı etkisi saptanmadı