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https://www.readbyqxmd.com/read/28106837/a-distributed-and-energy-efficient-algorithm-for-event-k-coverage-in-underwater-sensor-networks
#1
Peng Jiang, Yiming Xu, Jun Liu
For event dynamic K-coverage algorithms, each management node selects its assistant node by using a greedy algorithm without considering the residual energy and situations in which a node is selected by several events. This approach affects network energy consumption and balance. Therefore, this study proposes a distributed and energy-efficient event K-coverage algorithm (DEEKA). After the network achieves 1-coverage, the nodes that detect the same event compete for the event management node with the number of candidate nodes and the average residual energy, as well as the distance to the event...
January 19, 2017: Sensors
https://www.readbyqxmd.com/read/28103841/a-two-site-two-arm-34-week-double-blind-parallel-group-randomized-controlled-trial-of-reduced-nicotine-cigarettes-in-smokers-with-mood-and-or-anxiety-disorders-trial-design-and-protocol
#2
Sophia I Allen, Jonathan Foulds, Gladys N Pachas, Susan Veldheer, Corinne Cather, Nour Azzouz, Shari Hrabovsky, Ahmad Hameed, Jessica Yingst, Erin Hammett, Jennifer Modesto, Nicolle M Krebs, Junjia Zhu, Jason Liao, Joshua E Muscat, John Richie, A Eden Evins
BACKGROUND: The U.S. Food and Drug Administration can set standards for cigarettes that could include reducing their nicotine content. Such a standard should improve public health without causing unintended serious consequences for sub-populations. This study evaluates the effect of progressive nicotine reduction in cigarettes on smoking behavior, toxicant exposure, and psychiatric symptoms in smokers with comorbid mood and/or anxiety disorders using a two-site, two-arm, double-blind, parallel group, randomized controlled trial (RCT) in four phases over 34 weeks...
January 19, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28103157/alcohol-consumption-and-the-use-of-health-care-services-in-people-with-severe-mental-illness-and-stressful-childhood-experiences
#3
Andres R Schneeberger, Christian G Huber, Azizi Seixas, Kristina H Muenzenmaier, Undine E Lang, Dorothy Castille, Stefan Larkin, Bruce G Link
BACKGROUND: People who suffer from severe mental illness often present with histories of abuse during childhood. Alcohol use disorders is a common co-morbidity of survivors of childhood abuse and neglect. AIMS: This study analyzes the effects of stressful childhood experiences, a proxy for trauma, on the frequency of alcohol consumption and the utilization of health care services in a population of people with severe mental illness. METHODS: 111 men (mean age: 35 years) and 72 women (mean age: 40...
January 19, 2017: Journal of Addictive Diseases
https://www.readbyqxmd.com/read/28100008/is-moderate-alcohol-use-in-non-alcoholic-fatty-liver-disease-good-or-bad-a-critical-review
#4
REVIEW
Veeral H Ajmera, Norah A Terrault, Stephen A Harrison
Moderate alcohol consumption in patients with nonalcoholic fatty liver disease (NAFLD) is common, yet the effects on cardiovascular and liver health are unclear. Moderate alcohol use is associated with improved insulin sensitivity and decreased cardiovascular mortality in the general population but whether similar benefits are seen in persons with NAFLD is largely unstudied. There is significant overlap in the pathogenesis of alcoholic liver disease (ALD) and NAFLD although studies of ALD have focused on pathologic alcohol intake and few mechanistic studies of moderate alcohol use in NAFLD exist...
January 18, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28098956/the-effect-of-reference-group-classification-and-change-in-alcohol-consumption-on-the-association-between-alcohol-consumption-and-cardiovascular-disease
#5
Ji-Eun Park, Yeonhee Ryu, Sung-Il Cho
BACKGROUND: Many studies suggest that mild alcohol consumption can help avert cardiovascular disease (CVD). This study investigated the association between alcohol consumption and CVD incidence, and assessed whether this differed by reference group classification. As alcohol consumption amounts may change over time, the results of simple and time-dependent analyses were compared. METHODS: Data were from a community-based cohort study on 40- to 69-year-old Koreans recruited in 2001 to 2002...
January 18, 2017: Alcoholism, Clinical and Experimental Research
https://www.readbyqxmd.com/read/28096251/healthcare-resource-consumption-for-intermittent-urinary-catheterisation-cost-effectiveness-of-hydrophilic-catheters-and-budget-impact-analyses
#6
Carla Rognoni, Rosanna Tarricone
OBJECTIVES: This study presents a cost-effectiveness analysis comparing hydrophilic coated to uncoated catheters for patients performing urinary intermittent catheterisation. A national budget impact analysis is also included to evaluate the impact of intermittent catheterisation for management of bladder dysfunctions over a period of 5 years. DESIGN: A Markov model (lifetime horizon, 1 year cycle length) was developed to project health outcomes (life years and quality-adjusted life years) and economic consequences related to patients using hydrophilic coated or uncoated catheters...
January 17, 2017: BMJ Open
https://www.readbyqxmd.com/read/28066690/high-power-365-nm-uv-led-mercury-arc-lamp-replacement-for-photochemistry-and-chemical-photolithography
#7
K Hölz, J Lietard, M M Somoza
Ultraviolet light emitting diodes (UV LEDs) have become widespread in chemical research as highly efficient light sources for photochemistry and photopolymerization. However, in more complex experimental setups requiring highly concentrated light and highly spatially resolved patterning of the light, high-pressure mercury arc lamps are still widely used because they emit intense UV light from a compact arc volume that can be efficiently coupled into optical systems. Advances in the deposition and p-type doping of gallium nitride have recently permitted the manufacture of UV LEDs capable of replacing mercury arc lamps also in these applications...
January 3, 2017: ACS Sustainable Chemistry & Engineering
https://www.readbyqxmd.com/read/28063708/infants-indoor-and-outdoor-residential-exposure-to-benzene-and-respiratory-health-in-a-spanish-cohort
#8
Amparo Ferrero, Ana Esplugues, Marisa Estarlich, Sabrina Llop, Amparo Cases, Enrique Mantilla, Ferran Ballester, Carmen Iñiguez
Benzene exposure represents a potential risk for children's health. Apart from being a known carcinogen for humans (group 1 according to IARC), there is scientific evidence suggesting a relationship between benzene exposure and respiratory problems in children. But results are still inconclusive and inconsistent. This study aims to assess the determinants of exposure to indoor and outdoor residential benzene levels and its relationship with respiratory health in infants. Participants were 1-year-old infants (N = 352) from the INMA cohort from Valencia (Spain)...
January 4, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28047565/su-g-tep3-10-radiation-induces-prompt-live-cell-metabolic-fluxes
#9
D Campos, W Peeters, K Nickel, B Burkel, J Bussink, R Kimple, A van der Kogel, K Eliceiri, M Kissick
PURPOSE: To compare metabolic dynamics and HIF-1α expression following radiation between a cancerous cell line (UM-SCC-22B) and a normal, immortalized cell line, NOK (Normal Oral Keratinocyte). HIF-1 is a key factor in metabolism and radiosensitivity. A better understanding of how radiation affects the interplay of metabolism and HIF-1 might give a better understanding of the mechanisms responsible for radiosensitivity. METHODS: Changes in cellular metabolism in response to radiation are tracked by fluorescence lifetime of NADH...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28045308/everyday-unfair-treatment-and-multisystem-biological-dysregulation-in-african-american-adults
#10
Anthony D Ong, David R Williams, Ujuonu Nwizu, Tara L Gruenewald
OBJECTIVE: Increasing evidence suggests that chronic exposure to unfair treatment or day-to-day discrimination increases risk for poor health, but data on biological stress mechanisms are limited. This study examined chronic experiences of unfair treatment in relation to allostatic load (AL), a multisystem index of biological dysregulation. METHOD: Data are from a sample of 233 African-American adults (37-85 years; 64% women). Perceptions of everyday unfair treatment were measured by questionnaire...
January 2017: Cultural Diversity & Ethnic Minority Psychology
https://www.readbyqxmd.com/read/28041933/a-risk-assessment-of-dietary-ochratoxin-a-in-the-united-states
#11
Nicole J Mitchell, Chen Chen, Jeffrey D Palumbo, Andreia Bianchini, Jack Cappozzo, Jayne Stratton, Dojin Ryu, Felicia Wu
Ochratoxin A (OTA) is a mycotoxin (fungal toxin) found in multiple foodstuffs. Because OTA has been shown to cause kidney disease in multiple animal models, several governmental bodies around the world have set maximum allowable levels of OTA in different foods and beverages. In this study, we conducted the first exposure and risk assessment study of OTA for the United States' population. A variety of commodities from grocery stores across the US were sampled for OTA over a 2-year period. OTA exposure was calculated from the OTA concentrations in foodstuffs and consumption data for different age ranges...
December 30, 2016: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28032063/carcinogen-risk-assessment-of-polycyclic-aromatic-hydrocarbons-in-drinking-water-using-probabilistic-approaches
#12
Hamid Karyab, Masud Yunesian, Simin Nasseri, Noushin Rastkari, Amirhosein Mahvi, Ramin Nabizadeh
BACKGROUND: This study was focused on the probability of carcinogen risk of low-level ingestion and dermal exposure with polycyclic aromatic hydrocarbons (PAHs) from drinking water in Tehran, capital of Iran. METHODS: Concentrations of 16 PAHs were measured in the tap, bottled and heated tap water in four different seasons. Using a questionnaire-based survey, exposure with PAHs from drinking water was evaluated via direct ingestion, swimming, washing and showering...
November 2016: Iranian Journal of Public Health
https://www.readbyqxmd.com/read/28009786/low-force-muscle-activity-regulates-energy-expenditure-after-spinal-cord-injury
#13
Jessica R Woelfel, Amy L Kimball, Chu-Ling Yen, Richard K Shields
: Reduced physical activity is a primary risk factor for increased morbidity and mortality, People with spinal cord injury (SCI) have reduced activity for a lifetime, as they cannot volitionally activate affected skeletal muscles. We explored whether low force and low frequency stimulation is a viable strategy to enhance systemic energy expenditure in people with SCI. PURPOSE: To determine the effects of low stimulation frequency (1 Hz, 3 Hz) and stimulation intensity (50 mA and 100 mA) on energy expenditure in people with SCI...
December 22, 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28008197/associations-of-alcohol-use-with-mental-health-and-alcohol-exposure-among-school-going-students-in-cambodia
#14
Karl Peltzer, Supa Pengpid, Chher Tepirou
The aim of this study was to examine the associations of alcohol use with sociodemographic factors, mental health and alcohol exposure among school-going adolescents in Cambodia. The analysis included 3,806 school children, mean age 15.7 years (SD=1.8), from Cambodia who participated in the "Global School-based Student Health Survey" (GSHS) in 2013. The results indicate that overall, 10.0% of the students reported current alcohol use, 10.8% lifetime drunkenness, and 2.8% problem drinking. In multivariate logistic regression analysis, sociodemographic factors (older age and being male), mental health and other variables (bullying victimization, OR (odds ratio) = 1...
December 2016: Nagoya Journal of Medical Science
https://www.readbyqxmd.com/read/28002675/flexible-all-inorganic-actuators-based-on-vanadium-dioxide-and-carbon-nanotube-bimorphs
#15
He Ma, Jiwei Hou, Xuewen Wang, Jin Zhang, Zhiquan Yuan, Lin Xiao, Yang Wei, Shoushan Fan, Kaili Jiang, Kai Liu
Flexible actuators responsive to multiple stimuli are much desired in wearable electronics. However, general designs containing organic materials are usually subject to slow response and limited lifetime, or high triggering threshold. In this study, we develop flexible, all-inorganic actuators based on bimorph structures composed of vanadium dioxide (VO2) and carbon nanotube (CNT) thin films. The drastic, reversible phase transition of VO2 drives the actuators to deliver giant amplitude, fast response up to ∼100 Hz, and long lifetime more than 1 000 000 actuation cycles...
December 27, 2016: Nano Letters
https://www.readbyqxmd.com/read/28000162/role-of-cell-metabolism-and-mitochondrial-function-during-adult-neurogenesis
#16
Ana S Almeida, Helena L A Vieira
Brain is the major consumer of glucose in the human body, whose pattern of consumption changes through lifetime, decreasing during adolescence up to adulthood. This evidence leads to the hypothesis that, in cerebral developmental stages, glycolysis might be the driving force for the high-energy requirement. Furthermore, several studies claim that neurogenesis process is accompanied by a shift into mitochondrial oxidative metabolism. Herein, we discuss recent work about cell metabolism during neuronal differentiation process, in particular the mitochondrial role in cellular bioenergy dynamics...
December 21, 2016: Neurochemical Research
https://www.readbyqxmd.com/read/27995012/dcbrp-a-deterministic-chain-based-routing-protocol-for-wireless-sensor-networks
#17
Haydar Abdulameer Marhoon, M Mahmuddin, Shahrudin Awang Nor
BACKGROUND: Wireless sensor networks (WSNs) are a promising area for both researchers and industry because of their various applications The sensor node expends the majority of its energy on communication with other nodes. Therefore, the routing protocol plays an important role in delivering network data while minimizing energy consumption as much as possible. The chain-based routing approach is superior to other approaches. However, chain-based routing protocols still expend substantial energy in the Chain Head (CH) node...
2016: SpringerPlus
https://www.readbyqxmd.com/read/27986722/detection-of-eskape-bacterial-pathogens-at-the-point-of-care-using-isothermal-dna-based-assays-in-a-portable-de-gas-microfluidic-diagnostic-assay-platform
#18
Lars D Renner, Jindong Zan, Linda I Hu, Manuel Martinez, Pedro J Resto, Adam C Siegel, Clint Torres, Sara B Hall, Tom R Slezak, Tuan H Nguyen, Douglas B Weibel
: An estimated 1.5B microbial infections occur globally each year and result in ∼4.6M deaths. A technology gap associated with commercially available diagnostic tests in remote and underdeveloped regions prevents timely pathogen identification for effective antibiotic chemotherapies for infected patients. The result is a trial-and-error approach that is limited in effectiveness and increases risk for patients while contributing to antimicrobial drug resistance and reduces the lifetime of antibiotics...
December 16, 2016: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/27973448/a-high-efficiency-uneven-cluster-deployment-algorithm-based-on-network-layered-for-event-coverage-in-uwsns
#19
Shanen Yu, Shuai Liu, Peng Jiang
Most existing deployment algorithms for event coverage in underwater wireless sensor networks (UWSNs) usually do not consider that network communication has non-uniform characteristics on three-dimensional underwater environments. Such deployment algorithms ignore that the nodes are distributed at different depths and have different probabilities for data acquisition, thereby leading to imbalances in the overall network energy consumption, decreasing the network performance, and resulting in poor and unreliable late network operation...
December 12, 2016: Sensors
https://www.readbyqxmd.com/read/27943267/lifetime-alcohol-intake-is-associated-with-an-increased-risk-of-kras-and-braf-kras-but-not-braf-colorectal-cancer
#20
Harindra Jayasekara, Robert J MacInnis, Elizabeth J Williamson, Allison M Hodge, Mark Clendenning, Christophe Rosty, Rhiannon Walters, Robin Room, Melissa C Southey, Mark A Jenkins, Roger L Milne, John L Hopper, Graham G Giles, Daniel D Buchanan, Dallas R English
Ethanol in alcoholic beverages is a causative agent for colorectal cancer. Colorectal cancer is a biologically heterogeneous disease, and molecular subtypes defined by the presence of somatic mutations in BRAF and KRAS are known to exist. We examined associations between lifetime alcohol intake and molecular and anatomic subtypes of colorectal cancer. We calculated usual alcohol intake for 10-year periods from age 20 using recalled frequency and quantity of beverage-specific consumption for 38,149 participants aged 40-69 years from the Melbourne Collaborative Cohort Study...
December 10, 2016: International Journal of Cancer. Journal International du Cancer
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