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lifetime consumption

Liu Yang, Yinzhi Lu, Lian Xiong, Yang Tao, Yuanchang Zhong
Clustering is an effective topology control method in wireless sensor networks (WSNs), since it can enhance the network lifetime and scalability. To prolong the network lifetime in clustered WSNs, an efficient cluster head (CH) optimization policy is essential to distribute the energy among sensor nodes. Recently, game theory has been introduced to model clustering. Each sensor node is considered as a rational and selfish player which will play a clustering game with an equilibrium strategy. Then it decides whether to act as the CH according to this strategy for a tradeoff between providing required services and energy conservation...
November 17, 2017: Sensors
Thomas Brächer, Mathieu Fabre, Thomas Meyer, Tobias Fischer, Stéphane Auffret, Olivier Boulle, Ursula Ebels, Philipp Pirro, Gilles Gaudin
The miniaturization of CMOS devices becomes increasingly difficult due to fundamental limitations and the increase of leakage currents. Large research efforts are devoted to find alternative concepts that allow for a larger data-density and lower power consumption than conventional semiconductor approaches. Spin waves have been identified as a potential technology that can complement and outperform CMOS in complex logic applications, profiting from the fact that these waves enable wave computing on the nano-scale...
November 17, 2017: Nano Letters
Alejandro Gallego-Schmid, Joan Manuel F Mendoza, Adisa Azapagic
More than 130 million microwaves are affected by European Union (EU) legislation which is aimed at reducing the consumption of electricity in the standby mode ('Standby Regulation') and at more sustainable management of end-of-life electrical and electronic waste ('WEEE Directive'). While legislation focuses on these two life cycle stages, there is little information on the environmental impacts of the entire life cycle of microwaves. To address this gap, this paper presents a comprehensive life cycle assessment of microwaves and assesses the environmental implications of the Standby Regulation and the WEEE Directive at the EU level...
November 13, 2017: Science of the Total Environment
Naima Hamid, Jabir Hussain Syed, Muhammad Junaid, Adeel Mahmood, Jun Li, Gan Zhang, Riffat Naseem Malik
Due to the severe fuel crisis in terms of natural gas, a paradigm shift in fuel combustion (diesel, gasoline, and biomass) may increase the atmospheric emissions and associated health risks in Pakistan. Present study was aimed to investigate the concentration of fugitive PAHs in the environment (outdoor and indoor settings), associated probabilistic health risk assessment in the exposed population, and possible linkage between fuel consumption patterns and PAHs emissions in twin cities (Rawalpindi and Islamabad) of Pakistan...
November 13, 2017: Science of the Total Environment
Kaiqi Ding, Haitao Zhao, Xiping Hu, Jibo Wei
In sustainable smart cities, power saving is a severe challenge in the energy-constrained Internet of Things (IoT). Efficient utilization of limited multiple non-overlap channels and time resources is a promising solution to reduce the network interference and save energy consumption. In this paper, we propose a joint channel allocation and time slot optimization solution for IoT. First, we propose a channel ranking algorithm which enables each node to rank its available channels based on the channel properties...
October 28, 2017: Sensors
Camille Pouchieu, Clément Piel, Camille Carles, Anne Gruber, Catherine Helmer, Séverine Tual, Elisabeth Marcotullio, Pierre Lebailly, Isabelle Baldi
Background and Aim: Epidemiological studies have reported an increased risk of Parkinson's disease (PD) in farmers exposed to pesticides, but no clear conclusion can be drawn on the type of pesticide and duration of use associated with an effect. In the French agricultural cohort AGRICAN, we assessed associations between PD and pesticide use according to the types of livestock and crops grown, including exposure to some active ingredients with duration of use. Methods: Self-reported PD and history of lifetime exposure to 13 crops and 5 types of animals and pesticide use were collected at enrolment (2005-07) among 181 842 participants...
November 9, 2017: International Journal of Epidemiology
Wing Y Tuet, Yunle Chen, Shierly Fok, Dong Gao, Rodney J Weber, Julie A Champion, Nga L Ng
Exposure to air pollution is a leading global health risk. Secondary organic aerosol (SOA) constitute a large portion of ambient particulate matter (PM). In this study, the water-soluble oxidative potential (OP) determined by dithiothreitol (DTT) consumption and intracellular reactive oxygen and nitrogen species (ROS/RNS) production was measured for SOA generated from the photooxidation of naphthalene in the presence of iron sulfate and ammonium sulfate seed particles. The measured intrinsic OP varied for aerosol formed using different initial naphthalene concentrations, however, no trends were observed between OP and bulk aerosol composition or seed type...
November 9, 2017: Scientific Reports
Li Wang, Chunmei Li, Bining Jiao, Qiwan Li, Hang Su, Jing Wang, Fen Jin
Halogenated polycyclic aromatic hydrocarbons (HPAHs) are attracting increasing concern because of their greater toxicity than their corresponding parent PAHs. However, human exposure to HPAHs via food consumption is not fully understood. In this study, daily intake via vegetable ingestion of 11 HPAHs and 16 PAHs and subsequent cancer risk were assessed for population in Beijing. A total of 80 vegetable samples were purchased from markets, including five leafy vegetables and three root vegetables. The concentrations of total HPAHs (∑HPAHs) were 0...
November 6, 2017: Science of the Total Environment
Lisa S Barsties, Sophie D Walsh, Tim Huijts, Pernille Bendtsen, Michal Molcho, Thomas Buijs, Alessio Vieno, Frank J Elgar, Gonneke W J M Stevens
INTRODUCTION AND AIMS: This internationally comparative study examines differences in alcohol consumption between first- and second-generation immigrant and native adolescents. We also investigate to what extent origin and receiving country alcohol per capita consumption (APCC) rates and proportions of heavy episodic drinkers (HED) are associated with immigrant adolescents' alcohol consumption. DESIGN AND METHODS: We used cross-sectional survey data from the 2013/2014 Health Behaviour in School-aged Children study...
November 2017: Drug and Alcohol Review
Yi-Hua Fan, Ching-Yuan Ho, Yaw-Jen Chang
Dye-sensitized solar cell (DSSC) is a potential candidate to replace conventional silicon-based solar cells because of high efficiency, cheap cost, and lower energy consumption in comparison with silicon chip manufacture. In this report, mixed-phase (anatase and rutile nanoparticles) TiO2 photoanode was synthesized to investigate material characteristics, carriers transport, and photovoltaic performance for future DSSC application. Field-emission scanning electron microscope (SEM), X-ray diffraction (XRD), photoluminescence (PL), and UV-visible spectroscopy were used to characterize mixed TiO2 particles...
2017: Scanning
Nuria García-Marchena, Daniel Silva-Peña, Ana Isabel Martín-Velasco, María Ángeles Villanúa, Pedro Araos, María Pedraz, Rosa Maza-Quiroga, Pablo Romero-Sanchiz, Gabriel Rubio, Estela Castilla-Ortega, Juan Suárez, Fernando Rodríguez de Fonseca, Antonia Serrano, Francisco Javier Pavón
The identification of growth factors as potential biomarkers in alcohol addiction may help to understand underlying mechanisms associated with the pathogenesis of alcohol use disorders (AUDs). Previous studies have linked growth factors to neural plasticity in neurocognitive impairment and mental disorders. In order to further clarify the impact of chronic alcohol consumption on circulating growth factors, a cross-sectional study was performed in abstinent AUD patients (alcohol group, N = 91) and healthy control subjects (control group, N = 55) to examine plasma concentrations of brain-derived neurotrophic factor (BDNF), insulin-like growth factor-1 (IGF-1) and IGF-1 binding protein-3 (IGFBP-3)...
2017: PloS One
Balal Yousaf, Guijian Liu, Qumber Abbas, Habib Ullah, Ruwei Wang, Muhammad Zia-Ur-Rehman, Amina, Zhiyuan Niu
Potentially toxic elements (PTEs) discharge to the soil environment through increased anthropogenic activities is a global threat. These PTEs can have harmful and chronic-persistent health effects on exposed populations through food consumption grown on contaminated soils. Efforts to investigate the transformation mechanism and accumulation behavior of PTEs in soil-plant system and their adverse health-effects have focused extensively in previous studies. However, limited studies address biochar nanosheets (BCNs) as a potential soil amendment to reduced humans health risks through dietary intake of food-crop grown on PTE-contaminated soil...
October 26, 2017: Chemosphere
María Pilar García-Pardo, Jose Enrique De la Rubia Ortí, Maria Asunción Aguilar Calpe
INTRODUCTION: Drug addiction continues being a major public problem faced by modern societies with different social, health and legal consequences for the consumers. Consumption of psychostimulants, like cocaine or MDMA (known as ecstasy) are highly prevalent and cognitive and memory impairments have been related with the abuse of these drugs. AIM: The aim of this work was to review the most important data of the literature in the last 10 years about the effects of cocaine and MDMA on inhibitory avoidance and object recognition tests in rodents...
October 31, 2017: Neurobiology of Learning and Memory
Kai Tian, Huanyu Bao, Xuechen Zhang, Taoran Shi, Xueping Liu, Fuyong Wu
Polycyclic aromatic hydrocarbons (PAHs) contamination in atmospheric and soil was serious, which is mainly due to high level of emission of PAHs in China resulted from the predominating use of coal in energy consumption and continuous development of economy and society for years. However, the status of PAHs in winter wheat grains from the areas influenced by coal combustion in China was still not clear. During harvest season, the winter wheat grains were collected from agricultural fields surrounding coal-fired power plants located in Shaanxi and Henan Provinces...
October 24, 2017: Science of the Total Environment
Enrique Gonzalez, Raul Peña, Alfonso Avila, Cesar Vargas-Rosales, David Munoz-Rodriguez
The continuous technological advances in favor of mHealth represent a key factor in the improvement of medical emergency services. This systematic review presents the identification, study, and classification of the most up-to-date approaches surrounding the deployment of architectures for mHealth. Our review includes 25 articles obtained from databases such as IEEE Xplore, Scopus, SpringerLink, ScienceDirect, and SAGE. This review focused on studies addressing mHealth systems for outdoor emergency situations...
2017: Journal of Healthcare Engineering
Nina Pocuca, Leanne Hides, Catherine A Quinn, Melanie J White, Louise Mewton, Nicola Clare Newton, Tim Slade, Cath Chapman, Gavin Andrews, Maree Teesson, Steve Allsop, Nyanda McBride
Early adolescent drinking has been identified as an important risk factor for the development of alcohol dependence. Both perceived peer drinking and personality profiles have been implicated as risk factors for early adolescent drinking. However, research is yet to determine how these 2 factors may interact to increase such risk. This study aimed to determine whether personality profiles moderated the relationship between perceived peer drinking and early adolescent drinking. Baseline data were utilized in the analyses, from 3,287 adolescents (Mage = 13...
October 26, 2017: Psychology of Addictive Behaviors: Journal of the Society of Psychologists in Addictive Behaviors
Mohammad Miri, Elham Akbari, Abdeltif Amrane, Seyed Javad Jafari, Hadi Eslami, Edris Hoseinzadeh, Mansur Zarrabi, Javad Salimi, Mohsen Sayyad-Arbabi, Mahmoud Taghavi
The heavy metal (Pb, Cd, Cr, and Ni) content of a fish species consumed by the Sistan population and its associated health risk factors were investigated. The mean concentrations of Pb, Cd, and Cr were slightly higher than the standard levels. The Ni content of fish was below the maximum guideline proposed by the US Food and Drug Administration (USFDA). The average estimated weekly intake was significantly below the provisional tolerable intake based on the FAO and WHO standards for all studied metals. The target hazard quotients (THQ) of all metals were below 1, showing an absence of health hazard for the population of Sistan...
October 25, 2017: Environmental Monitoring and Assessment
Seema Patrikar, Dashrath Basannar, Vijay Bhatti, Kunal Chatterjee, Ajoy Mahen
BACKGROUND & OBJECTIVES: Violence against women cutting across diverse socio-economic classes is an under-recognized human rights violation in the world. This analysis was undertaken to examine the prevalence along with predictors of intimate partner violence (IPV) and its association with HIV/AIDS and sexually transmitted infections (STIs) in Indian ever-married women. METHODS: The data obtained from 2005 to 2006 third round of National Family Health Survey-3 (NFHS-3) were used in this study...
June 2017: Indian Journal of Medical Research
Harindra Jayasekara, Surender Juneja, Allison M Hodge, Robin Room, Roger L Milne, John L Hopper, Dallas R English, Graham G Giles, Robert J MacInnis
Cohort studies have reported inconsistent evidence regarding alcohol intake and risk of non-Hodgkin lymphoma (NHL), mostly based on alcohol intake assessed close to study enrolment. We examined this association using alcohol intake measured from age 20 onwards. We calculated usual alcohol intake for 10-year periods from age 20 using recalled frequency and quantity of beverage-specific consumption for 37,990 participants aged 40-69 years from the Melbourne Collaborative Cohort Study. Cox regression was performed to derive hazard ratios (HRs) and 95% confidence intervals (CIs) for the association between alcohol intake (g/day) and NHL risk...
October 21, 2017: International Journal of Cancer. Journal International du Cancer
Dávid Zoltán Szabó, Randall Martyr
This paper is a quantitative study of a reserve contract for real-time balancing of a power system. Under this contract, the owner of a storage device, such as a battery, helps smooth fluctuations in electricity demand and supply by using the device to increase electricity consumption. The battery owner must be able to provide immediate physical cover, and should therefore have sufficient storage available in the battery before entering the contract. Accordingly, the following problem can be formulated for the battery owner: determine the optimal time to enter the contract and, if necessary, the optimal time to discharge electricity before entering the contract...
August 13, 2017: Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences
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