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https://www.readbyqxmd.com/read/29147141/the-relationship-between-use-of-social-network-sites-online-social-support-and-well-being-results-from-a-six-wave-longitudinal-study
#1
Sonja Utz, Johannes Breuer
Existing work on the effects of social network sites (SNS) on well-being has often stressed that SNS can help people gain social support from their online networks, which positively affects their well-being. However, the majority of studies in this area have been cross-sectional in nature and/or relied on student samples. Using data from six waves of a longitudinal study with a representative sample of Dutch Internet users, we first examined whether users and nonusers of SNS differ in online social support and well-being (as indicated by life satisfaction and stress)...
2017: Journal of Media Psychology
https://www.readbyqxmd.com/read/29130329/investigating-the-differential-effects-of-social-networking-site-addiction-and-internet-gaming-disorder-on-psychological-health
#2
Halley M Pontes
Background and aims Previous studies focused on examining the interrelationships between social networking site (SNS) addiction and Internet gaming disorder (IGD) in isolation. Moreover, little is known about the potential simultaneous differential effects of SNS addiction and IGD on psychological health. This study investigated the interplay between these two technological addictions and ascertained how they can uniquely and distinctively contribute to increasing psychiatric distress when accounting for potential effects stemming from sociodemographic and technology-related variables...
November 13, 2017: Journal of Behavioral Addictions
https://www.readbyqxmd.com/read/29124272/lithiation-assisted-exfoliation-and-reduction-of-sns2-to-sns-decorated-on-lithium-integrated-graphene-for-efficient-energy-storage
#3
Bing Zhao, Fang Chen, Zhixuan Wang, Shoushuang Huang, Yong Jiang, Zhiwen Chen
Low reversion of lithium sulfide and defects causing irreversible capacity loss are the primary causes of low Coulombic efficiency in tin sulfide/graphene-based composites. Herein, we synthesized a SnS/graphene composite via a novel lithiation-assisted exfoliation and reduction method using SnS2, n-butyllithium, and graphene oxide as raw materials. The experimental results reveal that lithium from the insertion agent combine with the oxygen-containing groups on graphene oxide; this can help in the reduction of hexagonal SnS2 to orthorhombic SnS during calcination and simultaneous pre-occupancy of the edge and defect sites of graphene; thus, additional lithium ion consumption during the initial several lithiation processes is diminished...
November 10, 2017: Nanoscale
https://www.readbyqxmd.com/read/29118721/gut-brain-axis-in-regulation-of-blood-pressure
#4
REVIEW
Tao Yang, Jasenka Zubcevic
Hypertension (HTN) is an escalating health issue worldwide. It is estimated that 1.56 billion people will suffer from high blood pressure (BP) by 2025. Recent studies reported an association between gut dysbiosis and HTN, thus proposing interesting avenues for novel treatments of this condition. The sympathetic nervous system (SNS) and the immune system (IS) play a recognized role in the onset and progression of HTN, while reciprocal communication between gut microbiota and the brain can regulate BP by modulating the interplay between the IS and SNS...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/29112382/iron-ii-complexes-of-a-hemilabile-sns-amido-ligand-synthesis-characterization-and-reactivity
#5
Uttam K Das, Stephanie L Daifuku, Theresa E Iannuzzi, Serge I Gorelsky, Ilia Korobkov, Bulat Gabidullin, Michael L Neidig, R Tom Baker
We report an easily prepared bis(thioether) amine ligand, S(Me)N(H)S(Me), along with the synthesis, characterization, and reactivity of the paramagnetic iron(II) bis(amido) complex, [Fe(κ(3)-S(Me)NS(Me))2] (1). Binding of the two different thioethers to Fe generates both five- and six-membered rings with Fe-S bonds in the five-membered rings (av 2.54 Å) being significantly shorter than those in the six-membered rings (av 2.71 Å), suggesting hemilability of the latter thioethers. Consistent with this hypothesis, magnetic circular dichroism (MCD) and computational (TD-DFT) studies indicate that 1 in solution contains a five-coordinate component [Fe(κ(3)-S(Me)NS(Me))(κ(2)-S(Me)NS(Me))] (2)...
November 7, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/29104364/the-concurrent-and-longitudinal-relationships-between-adolescents-use-of-social-network-sites-and-their-social-self-esteem
#6
Patti M Valkenburg, Maria Koutamanis, Helen G M Vossen
The first aim of this study was to investigate the concurrent and longitudinal relationships between adolescents' use of social network sites (SNSs) and their social self-esteem. The second aim was to investigate whether the valence of the feedback that adolescents receive on SNSs can explain these relationships. We conducted a three-wave panel study among 852 pre- and early adolescents (10-15 years old). In line with earlier research, we found significant concurrent correlations between adolescents' SNS use and their social self-esteem in all three data waves...
November 2017: Computers in Human Behavior
https://www.readbyqxmd.com/read/29103945/central-sympathetic-nervous-system-reinforcement-in-obstructive-sleep-apnoea
#7
REVIEW
Magdalena Wszedybyl-Winklewska, Jacek Wolf, Arkadiusz Szarmach, Pawel J Winklewski, Edyta Szurowska, Krzysztof Narkiewicz
The available studies on cerebrovascular reactivity and cerebral oxygenation in obstructive sleep apnoea (OSA) patients brought conflicting results, yet the overall evidence suggests that resting state cerebral perfusion is diminished in these patients. Interestingly, in a group of healthy professional breath-hold divers who are exercising very long apnoeas - episodes corresponding to the ones observed in patients with OSA - demonstrated that cerebral oxygenation may remain stable at the expense of extreme sympathetic nervous system (SNS) activation...
September 9, 2017: Sleep Medicine Reviews
https://www.readbyqxmd.com/read/29102296/sacral-neuromodulation-for-faecal-incontinence-10-years-experience-at-a-scottish-tertiary-centre
#8
Hoey Koh, Stephen McSorley, Sarah Hunt, Martha Quinn, Graham MacKay, John Anderson
INTRODUCTION: Sacral nerve stimulation (SNS) is increasingly popular in the management of faecal incontinence. This paper reports the first 10-year experience of SNS in the management of faecal incontinence at a tertiary referral centre. Data was collected in a prospectively maintained database. RESULTS: In total 130 patients were referred. The majority were women (94%) under 75-year-old (98%). Seven patients were found to have full-thickness rectal prolapse at the initial work-up and proceeded to rectopexy...
October 25, 2017: Surgeon: Journal of the Royal Colleges of Surgeons of Edinburgh and Ireland
https://www.readbyqxmd.com/read/29096510/improving-the-accuracy-of-m%C3%A3-ller-plesset-perturbation-theory-with-neural-networks
#9
Robert T McGibbon, Andrew G Taube, Alexander G Donchev, Karthik Siva, Felipe Hernández, Cory Hargus, Ka-Hei Law, John L Klepeis, David E Shaw
Noncovalent interactions are of fundamental importance across the disciplines of chemistry, materials science, and biology. Quantum chemical calculations on noncovalently bound complexes, which allow for the quantification of properties such as binding energies and geometries, play an essential role in advancing our understanding of, and building models for, a vast array of complex processes involving molecular association or self-assembly. Because of its relatively modest computational cost, second-order Møller-Plesset perturbation (MP2) theory is one of the most widely used methods in quantum chemistry for studying noncovalent interactions...
October 28, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/29083148/complete-separation-of-carriers-in-the-ges-sns-lateral-heterostructure-by-uniaxial-tensile-strain
#10
Lei Peng, Chan Wang, Qi Qian, Cheng Bi, Sufan Wang, Yucheng Huang
The strategy of forming lateral heterostructures by stitching various two-dimensional materials overcomes the limitations due to the restricted properties of single-component materials. In this work, by using first-principles calculations, the electronic properties of GeS/SnS lateral heterostructures, together with the effect of strain, were systematically investigated. The results showed that with increasing tensile strain along the zigzag direction the band gap displays an extremely interesting variation: it linearly increases in the beginning until 2...
November 7, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29076970/improving-the-clinical-skills-performance-of-graduating-medical-students-using-wise-oncall-a-multimedia-educational-module
#11
Demian Szyld, Kristen Uquillas, Brad R Green, Steven D Yavner, Hyuksoon Song, Michael W Nick, Grace M Ng, Martin V Pusic, Thomas S Riles, Adina Kalet
INTRODUCTION: Transitions to residency programs are designed to maximize quality and safety of patient care, as medical students become residents. However, best instructional or readiness assessment practices are not yet established. We sought to study the impact of a screen-based interactive curriculum designed to prepare interns to address common clinical coverage issues (WISE OnCall) on the clinical skills demonstrated in simulation and hypothesize that performance would improve after completing the module...
October 25, 2017: Simulation in Healthcare: Journal of the Society for Simulation in Healthcare
https://www.readbyqxmd.com/read/29074041/bilateral-sphenopalatine-ganglion-block-reduces-blood-pressure-in-never-treated-patients-with-essential-hypertension-a-randomized-controlled-single-blinded-study
#12
Helen Triantafyllidi, Chrysa Arvaniti, Antonios Schoinas, Dimitris Benas, Stefanos Vlachos, Leonidas Palaiodimos, George Pavlidis, Ignatios Ikonomidis, Chrysanthi Batistaki, Costas Voumvourakis, John Lekakis
BACKGROUND: Sympathetic fibers connect sphenopalatine ganglion (SPG) with the central nervous system. We aimed to study the effect of SPG block in blood pressure (BP) in never treated patients with stage I-II essential hypertension. METHODS: We performed bilateral SPG block with lidocaine 2% in 33 hypertensive patients (mean age 48±12years, 24 men) and a sham operation with water for injection in 11 patients who served as the control group (mean age 51±12years, 8 men)...
October 16, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/29071705/vigilance-for-threat-accounts-for-inter-individual-variation-in-physiological-responses-to-adversity-in-rhesus-macaques-a-cognition%C3%A2-%C3%A3-%C3%A2-environment-approach
#13
Tara M Mandalaywala, Lauren A Petrullo, Karen J Parker, Dario Maestripieri, James P Higham
Early life adversity (ELA) can lead to poor health later in life. However, there is significant variation in outcomes, with some individuals displaying resilience even in the face of adversity. Using longitudinal data collected from free-ranging rhesus macaques between birth and 3 years, we examined whether individual variation in vigilance for threat, an early emerging attentional bias, can account for variation in long-term outcomes between individuals reared in similar environments. We found that ELA and vigilance during infancy interact to predict physiological dysregulation in Sympathetic Nervous System (SNS) and Hypothalamic-Pituitary-Adrenal (HPA) stress responses during juvenility...
December 2017: Developmental Psychobiology
https://www.readbyqxmd.com/read/29070575/saphenous-nerve-stimulation-normalizes-bladder-underactivity-induced-by-tibial-nerve-stimulation-in-cats
#14
Shun Li, Xing Li, Katherine Theisen, Jeffrey Browning, Bing Shen, Jicheng Wang, James R Roppolo, William C de Groat, Changfeng Tai
This study in α-chloralose anesthetized cats aimed at investigating the bladder responses to saphenous nerve stimulation (SNS). A urethral catheter was used to infuse the bladder with saline and to record changes in bladder pressure. With the bladder fully distended, SNS at 1 Hz frequency and an intensity slightly below the threshold (T) for inducing an observable motor response of the hindlimb muscles induced large amplitude (40-150 cmH2O) bladder contractions. Application of SNS (1 Hz, 2-4T) during cystometrograms (CMGs), when the bladder was slowly (1-3 ml/min) infused with saline, significantly (p<0...
October 25, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/29069489/effects-of-intraperitoneal-injection-of-sns2-flowers-on-mouse-testicle
#15
Disi Bai, Qingzhao Li, Yanjie Xiong, Junjian Zhao, Liyuan Bai, Peijun Shen, Lu Yuan, Ping Wu
SnS 2 nanoflowers (SnS 2 NFs) have been widely used in photoelectric and catalytic applications. However, its explosure and reproductive toxicity is unknown. The aim of this study was to investigate the effect of exposure to three different sized-SnS 2 flowers (dose: 38 mg/Kg; size: 50, 80 and 200 nm) in testes of mice for 4 weeks by intraperitoneal injection. Though the body weight of mice treated or not with SnS 2 NFs was not different, and SnS 2 NFs were distributed to the organs including liver, kidney, spleen, heart, brain and testis, more distribution SnS 2 NFs (50 and 80 nm) were found in testicle tissues compared with SnS 2 flowers (200 nm) in those tissues...
October 23, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/29064601/differential-involvement-of-nigral-subregions-in-idiopathic-parkinson-s-disease
#16
Young Hee Sung, Jongho Lee, Yoonho Nam, Hyeong-Geol Shin, Young Noh, Dong Hoon Shin, Eung Yeop Kim
In this study, the prevalence of abnormality in putative nigrosome 1 and nigrosome 4 (N1 and N4, respectively) was investigated in early versus late-stage idiopathic Parkinson's disease (IPD) patients. A total of 128 IPD patients (early stage[n = 89]; late stage[n = 39]) and 15 healthy subjects were scanned for high-resolution (0.5 × 0.5 × 1.0 mm(3) ) multiecho gradient-recalled echo MRI and dopamine transporter PET imaging. The MRI data were processed for susceptibility map-weighted imaging (SMWI) to improve a contrast-to-noise ratio, and the images were resliced at 0...
October 24, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/29055773/the-relationship-between-facebook-and-instagram-appearance-focused-activities-and-body-image-concerns-in-young-women
#17
Rachel Cohen, Toby Newton-John, Amy Slater
The present study aimed to identify the specific social networking sites (SNS) features that relate to body image concerns in young women. A total of 259 women aged 18-29years completed questionnaire measures of SNS use (Facebook and Instagram) and body image concerns. It was found that appearance-focused SNS use, rather than overall SNS use, was related to body image concerns in young women. Specifically, greater engagement in photo activities on Facebook, but not general Facebook use, was associated with greater thin-ideal internalisation and body surveillance...
October 19, 2017: Body Image
https://www.readbyqxmd.com/read/29055403/ancient-roots-modern-applications-mindfulness-as-a-novel-intervention-for-cardiovascular-disease
#18
Gabriel Zieff
Cardiovascular disease (CVD) has been associated with chronic psychological stress. Unremittent psychological stress causes dysregulation of the sympathetic nervous system (SNS) and hypothalamic-pituitaryadrenal (HPA) axis, which collectively promotes inflammation, atherosclerosis, and subsequent CVD risk. Stress reduction techniques, such as mindfulness meditation, have been shown to improve some markers of HPA and SNS function at rest and in response to acute stressors, suggesting that such techniques, over time, may be cardioprotective...
October 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/29048944/risk-factors-for-social-networking-site-scam-victimization-among-malaysian-students
#19
Grainne H Kirwan, Chris Fullwood, Brendan Rooney
Social networking sites (SNSs) can provide cybercriminals with various opportunities, including gathering of user data and login credentials to enable fraud, and directing of users toward online locations that may install malware onto their devices. The techniques employed by such cybercriminals can include clickbait (text or video), advertisement of nonexistent but potentially desirable products, and hoax competitions/giveaways. This study aimed to identify risk factors associated with falling victim to these malicious techniques...
October 19, 2017: Cyberpsychology, Behavior and Social Networking
https://www.readbyqxmd.com/read/29046985/new-devices-and-technologies-for-the-management-of-overactive-bladder
#20
REVIEW
Juan M Guzman-Negron, Howard B Goldman
PURPOSE OF REVIEW: Overactive bladder (OAB) affects millions of people in the USA and has a significant impact on their quality of life. Despite having a number of safe and effective ways of managing refractory OAB patients, there are many promising new technologies actively being studied and developed for the treatment of this population. This review examines current new devices and technologies under study for the treatment of OAB. RECENT FINDINGS: Modifications to already established therapies such as sacral nerve stimulation (SNS) or tibial nerve stimulation (TNS) are currently being studied for refractory OAB...
October 18, 2017: Current Urology Reports
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