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https://www.readbyqxmd.com/read/28929713/-comparison-between-cohort-and-case-control-approaches-for-health-impact-assessment-on-a-population-exposed-to-the-emissions-of-an-incinerator
#1
Luigi Fonte, Rossella Murtas, Antonio Giampiero Russo
OBJECTIVES: to compare the cohort and case-control approaches to evaluate the health effects of an incinerator. DESIGN: dispersion maps have been used to identify subjects exposed to the pollutants from the considered incinerator. Both cohort and case-control approaches have been applied to the study population to evaluate the following outcome: hospitalization for cardiovascular and respiratory causes between 2012 and 2014. The same two approaches have been applied to simulated populations, to which the risk and the base prevalence of the outcome have been varied...
May 2017: Epidemiologia e Prevenzione
https://www.readbyqxmd.com/read/28927267/atomistic-origins-of-high-capacity-and-high-structural-stability-of-polymer-derived-sioc-anode-materials
#2
Hong Sun, Kejie Zhao
Capacity and structural stability are often mutually exclusive properties of electrodes in Li-ion batteries: A gain in capacity is usually accompanied by the undesired large volumetric change of the host material upon lithiation. Polymer-derived ceramics, such as silicon oxycarbide (SiOC) of hybrid Si-O-C bonds, show an exceptional combination of high capacity and superior structural stability. We investigate the atomistic origins of the unique chemomechanical performance of carbon-rich SiOC using the first-principles theoretical approach...
September 20, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28921869/simplified-and-age-appropriate-recommendations-for-added-sugars-in-children
#3
M I Goran, S L Riemer, T L Alderete
Excess sugar intake increases risk for obesity and related comorbidities among children. The World Health Organization (WHO), American Heart Association (AHA) and the 2015 USDA dietary recommendations have proposed guidelines for added sugar intake to reduce risk for disease. WHO and USDA recommendations are presented as a percentage of daily calories from added sugar. This approach is not easily understood or translated to children, where energy needs increase with age. The AHA recommendation is based on a fixed value of 25 g of added sugar for all children 2-19 years of age...
September 18, 2017: Pediatric Obesity
https://www.readbyqxmd.com/read/28921613/voxel-based-multi-model-fitting-method-for-modelling-time-activity-curves-in-spect-images
#4
David Sarrut, Adrien Halty, Jean-Noel Badel, Ludovic Ferrer, Manuel Bardiès
PURPOSE: Estimating the biodistribution and the pharmacokinetics from timesequence SPECT images on a per-voxel basis is useful for studying activity nonuniformity or computing absorbed dose distributions by convolution of voxel kernels or Monte-Carlo radiation transport. Current approaches are either region-based, thus assuming uniform activity within the region, or voxel-based but using the same fitting model for all voxels. METHODS: We propose a voxel-based multi-model fitting method (VoMM) that estimates a fitting function for each voxel by automatically selecting the most appropriate model among a predetermined set with Akaike criteria...
September 17, 2017: Medical Physics
https://www.readbyqxmd.com/read/28921056/oxidative-stress-in-atherosclerosis
#5
REVIEW
Ajoe John Kattoor, Naga Venkata K Pothineni, Deepak Palagiri, Jawahar L Mehta
PURPOSE OF REVIEW: Atherosclerosis is now considered a chronic inflammatory disease. Oxidative stress induced by generation of excess reactive oxygen species has emerged as a critical, final common mechanism in atherosclerosis. Reactive oxygen species (ROS) are a group of small reactive molecules that play critical roles in the regulation of various cell functions and biological processes. Although essential for vascular homeostasis, uncontrolled production of ROS is implicated in vascular injury...
September 18, 2017: Current Atherosclerosis Reports
https://www.readbyqxmd.com/read/28915937/ultra-high-performance-supercritical-fluid-chromatography-mass-spectrometry-procedure-for-analysis-of-monosaccharides-from-plant-gum-binders
#6
Volodymyr Pauk, Tomáš Pluháček, Vladimír Havlíček, Karel Lemr
The ultra-high performance supercritical fluid chromatography-mass spectrometry (UHPSFC/MS) procedure for analysis of native monosaccharides was developed. Chromatographic conditions were investigated to separate a mixture of four hexoses, three pentoses, two deoxyhexoses and two uronic acids. Increasing water content in methanol modifier to 5% and formic acid to 4% improved peak shapes of neutral monosaccharides and allowed complete elution of highly polar uronic acids in a single run. An Acquity HSS C18SB column outperformed other three tested stationary phases (BEH (silica), BEH 2-ethylpyridine, CSH Fluoro-Phenyl) in terms of separation of isomers and analysis time (4...
October 9, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/28915227/dietary-sodium-intake-among-us-adults-with-hypertension-1999-2012
#7
Elena V Dolmatova, Kasra Moazzami, Sameer Bansilal
OBJECTIVE: Excess sodium consumption has strong links with hypertension and cardiovascular disease with Food and Drug Association calling to limit sodium intake. However, little is known regarding the trends of sodium intake among hypertensive patients in the United States. METHODS: Data from The National Health and Nutrition Examination Survey (1999-2012) were used to identify adults older than 20 years with self-reported hypertension. Sodium intake was measured through 24-h dietary recall...
September 14, 2017: Journal of Hypertension
https://www.readbyqxmd.com/read/28914803/achieving-congestion-mitigation-using-distributed-power-control-for-spectrum-sensor-nodes-in-sensor-network-aided-cognitive-radio-ad-hoc-networks
#8
Long Zhang, Haitao Xu, Fan Zhuo, Hucai Duan
The data sequence of spectrum sensing results injected from dedicated spectrum sensor nodes (SSNs) and the data traffic from upstream secondary users (SUs) lead to unpredictable data loads in a sensor network-aided cognitive radio ad hoc network (SN-CRN). As a result, network congestion may occur at a SU acting as fusion center when the offered data load exceeds its available capacity, which degrades network performance. In this paper, we present an effective approach to mitigate congestion of bottlenecked SUs via a proposed distributed power control framework for SSNs over a rectangular grid based SN-CRN, aiming to balance resource load and avoid excessive congestion...
September 15, 2017: Sensors
https://www.readbyqxmd.com/read/28904633/an-improved-method-for-measuring-hip-abduction-in-spica-after-surgical-reduction-for-developmental-dysplasia-of-the-hip
#9
C J DeFrancesco, T J Blumberg, N A Chauvin, W N Sankar
PURPOSE: Excessive in-spica abduction is a risk factor for oste-onecrosis after surgical reduction for developmental dysplasia of the hip (DDH). The traditional method for radiographically measuring hip abduction using axial imaging does not reflect the true angle, which usually lies in an oblique plane. The purpose of this study was to describe a novel method for measuring true hip position using advanced imaging. METHODS: A trigonometric model was derived to define hip position based upon the femoral axis angular deviation from midline as measured on axial and coronal sequences of MRI studies...
August 1, 2017: Journal of Children's Orthopaedics
https://www.readbyqxmd.com/read/28903892/effectiveness-of-smartmoms-a-novel-ehealth-intervention-for-management-of-gestational-weight-gain-randomized-controlled-pilot-trial
#10
Leanne M Redman, L Anne Gilmore, Jeffrey Breaux, Diana M Thomas, Karen Elkind-Hirsch, Tiffany Stewart, Daniel S Hsia, Jeffrey Burton, John W Apolzan, Loren E Cain, Abby D Altazan, Shelly Ragusa, Heather Brady, Allison Davis, J Mick Tilford, Elizabeth F Sutton, Corby K Martin
BACKGROUND: Two-thirds of pregnant women exceed gestational weight gain (GWG) recommendations. Because excess GWG is associated with adverse outcomes for mother and child, development of scalable and cost-effective approaches to deliver intensive lifestyle programs during pregnancy is urgent. OBJECTIVE: The aim of this study was to decrease the proportion of women who exceed the Institute of Medicine (IOM) 2009 GWG guidelines. METHODS: In a parallel-arm randomized controlled trial, 54 pregnant women (age 18-40 years) who were overweight (n=25) or obese (n=29) were enrolled to test whether an intensive lifestyle intervention (called SmartMoms) decreased the proportion of women with excess GWG, defined as exceeding the 2009 IOM guidelines, compared to no intervention (usual care group)...
September 13, 2017: JMIR MHealth and UHealth
https://www.readbyqxmd.com/read/28902990/high-purity-semiconducting-single-walled-carbon-nanotubes-a-key-enabling-material-in-emerging-electronics
#11
Jacques Lefebvre, Jianfu Ding, Zhao Li, Paul Finnie, Gregory Lopinski, Patrick R L Malenfant
Semiconducting single-walled carbon nanotubes (sc-SWCNTs) are emerging as a promising material for high-performance, high-density devices as well as low-cost, large-area macroelectronics produced via additive manufacturing methods such as roll-to-roll printing. Proof-of-concept demonstrations have indicated the potential of sc-SWCNTs for digital electronics, radiofrequency circuits, radiation hard memory, improved sensors, and flexible, stretchable, conformable electronics. Advances toward commercial applications bring numerous opportunities in SWCNT materials development and characterization as well as fabrication processes and printing technologies...
September 13, 2017: Accounts of Chemical Research
https://www.readbyqxmd.com/read/28900745/systematic-review-on-maternal-depression-versus-anxiety-in-relation-to-excessive-infant-crying-it-is-all-about-the-timing
#12
REVIEW
Johanna Petzoldt
Different types of studies suggest a link between maternal depression/anxiety and excessive infant crying (EC). However, comparability is hampered due to different designs, definitions and measurements. This systematic review investigates the specific role of maternal depression and anxiety considering them as preceding, concurrent and subsequent conditions of EC. A computerised literature search was conducted in January 2017 using Medline, PubMed, PsycINFO and Web of Science. After screening n = 399 records for inclusion/exclusion criteria, n = 33 records based on n = 30 projects were eligible for systematic qualitative data synthesis...
September 13, 2017: Archives of Women's Mental Health
https://www.readbyqxmd.com/read/28898404/high-versus-standard-volume-enteral-feeds-to-promote-growth-in-preterm-or-low-birth-weight-infants
#13
REVIEW
Thangaraj Abiramalatha, Niranjan Thomas, Vijay Gupta, Anand Viswanathan, William McGuire
BACKGROUND: Breast milk alone, given at standard recommended volumes (150 to 180 mL/kg/d), is not adequate to meet the protein, energy, and other nutrient requirements of growing preterm or low birth weight infants. One strategy that may be used to address these potential nutrient deficits is to give infants enteral feeds in excess of 200 mL/kg/d ('high-volume' feeds). This approach may increase nutrient uptake and growth rates, but concerns include that high-volume enteral feeds may cause feed intolerance, gastro-oesophageal reflux, aspiration pneumonia, necrotising enterocolitis, or complications related to fluid overload, including patent ductus arteriosus and bronchopulmonary dysplasia...
September 12, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28894210/enhancing-elevated-temperature-strength-of-copper-containing-aluminium-alloys-by-forming-l12-al3zr-precipitates-and-nucleating-%C3%AE-%C3%A2-precipitates-on-them
#14
Surendra Kumar Makineni, Sandeep Sugathan, Subhashish Meher, Rajarshi Banerjee, Saswata Bhattacharya, Subodh Kumar, Kamanio Chattopadhyay
Strengthening by precipitation of second phase is the guiding principle for the development of a host of high strength structural alloys, in particular, aluminium alloys for transportation sector. Higher efficiency and lower emission demands use of alloys at higher operating temperatures (200 °C-250 °C) and stresses, especially in applications for engine parts. Unfortunately, most of the precipitation hardened aluminium alloys that are currently available can withstand maximum temperatures ranging from 150-200 °C...
September 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28891977/polytrauma-defined-by-the-new-berlin-definition-a-validation-test-based-on-propensity-score-matching-approach
#15
Cheng-Shyuan Rau, Shao-Chun Wu, Pao-Jen Kuo, Yi-Chun Chen, Peng-Chen Chien, Hsiao-Yun Hsieh, Ching-Hua Hsieh
Background: Polytrauma patients are expected to have a higher risk of mortality than that obtained by the summation of expected mortality owing to their individual injuries. This study was designed to investigate the outcome of patients with polytrauma, which was defined using the new Berlin definition, as cases with an Abbreviated Injury Scale (AIS) ≥ 3 for two or more different body regions and one or more additional variables from five physiologic parameters (hypotension [systolic blood pressure ≤ 90 mmHg], unconsciousness [Glasgow Coma Scale score ≤ 8], acidosis [base excess ≤ -6...
September 11, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28890188/harnessing-the-respiration-machinery-for-high-yield-production-of-chemicals-in-metabolically-engineered-lactococcus-lactis
#16
Jianming Liu, Zhihao Wang, Vijayalakshmi Kandasamy, Sang Yup Lee, Christian Solem, Peter Ruhdal Jensen
When modifying the metabolism of living organisms with the aim of achieving biosynthesis of useful compounds, it is essential to ensure that it is possible to achieve overall redox balance. We propose a generalized strategy for this, based on fine-tuning of respiration. The strategy was applied on metabolically engineered Lactococcus lactis strains to optimize the production of acetoin and (R,R)-2,3-butanediol (R-BDO). In the absence of an external electron acceptor, a surplus of two NADH per acetoin molecule is produced...
September 8, 2017: Metabolic Engineering
https://www.readbyqxmd.com/read/28889600/normothermic-ex-vivo-kidney-perfusion-for-graft-quality-assessment-prior-to-transplantation
#17
J Moritz Kaths, Mátyás Hamar, Juan Echeverri, Ivan Linares, Peter Urbanellis, Jun Yu Cen, Sujani Ganesh, Luke S Dingwell, Paul Yip, Rohan John, Darius Bagli, Istvan Mucsi, Anand Ghanekar, David Grant, Lisa A Robinson, Markus Selzner
Normothermic ex vivo kidney perfusion (NEVKP) represents a novel approach for graft preservation and functional improvement in kidney transplantation. We investigated whether NEVKP also allows graft quality assessment prior to transplantation. Kidneys from 30kg pigs were recovered in a model of heart-beating donation (HBD) (group A), following 30min of warm ischemia (WI) (group B), or 60min WI (group C) (n=5/group). Following 8hrs of NEVKP, contralateral kidneys were resected, grafts autotransplanted, and pigs followed for 3 days...
September 10, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28884265/how-is-weight-stigma-related-to-children-s-health-related-quality-of-life-a-model-comparison-approach
#18
Veronica Guardabassi, Alberto Mirisola, Carlo Tomasetto
PURPOSE: Obesity is a highly stigmatizing condition for both adults and children, and both obesity and stigma experiences are negatively related with health-related quality of life (HRQoL). However, the relations among these constructs have been modeled in different and sometimes inconsistent terms in past research, and have been the object of surprisingly few studies in pediatric populations. The present study addresses this gap by comparing, in a sample of preadolescent children, four competing models (i...
September 7, 2017: Quality of Life Research
https://www.readbyqxmd.com/read/28879232/intracellular-spectral-recompositioning-of-light-enhances-algal-photosynthetic-efficiency
#19
Weiqi Fu, Amphun Chaiboonchoe, Basel Khraiwesh, Mehar Sultana, Ashish Jaiswal, Kenan Jijakli, David R Nelson, Ala'a Al-Hrout, Badriya Baig, Amr Amin, Kourosh Salehi-Ashtiani
Diatoms, considered as one of the most diverse and largest groups of algae, can provide the means to reach a sustainable production of petrochemical substitutes and bioactive compounds. However, a prerequisite to achieving this goal is to increase the solar-to-biomass conversion efficiency of photosynthesis, which generally remains less than 5% for most photosynthetic organisms. We have developed and implemented a rapid and effective approach, herein referred to as intracellular spectral recompositioning (ISR) of light, which, through absorption of excess blue light and its intracellular emission in the green spectral band, can improve light utilization...
September 2017: Science Advances
https://www.readbyqxmd.com/read/28876563/defining-predictors-of-mortality-in-pediatric-trauma-patients
#20
P Brysiewicz, D L Clarke, B Sartorius, J L Bruce, G L Laing
BACKGROUND: The aim of this study was to describe our cohort of pediatric trauma patients and to analyze their physiological data. The intention was to highlight the difficulty in using systolic blood pressure (SBP) readings in this population and to investigate the role of base excess (BE) in predicting clinical outcomes in pediatric trauma patien. METHOD: The Pietermaritzburg Metropolitan Trauma Service (PMTS) maintains a prospective digital trauma registry, and all pediatric trauma patients admitted to the service for the period January 2012 - July 2016 were included...
September 2017: South African Journal of Surgery. Suid-Afrikaanse Tydskrif Vir Chirurgie
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