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https://www.readbyqxmd.com/read/28441633/a-health-intervention-or-a-kitchen-appliance-household-costs-and-benefits-of-a-cleaner-burning-biomass-fuelled-cookstove-in-malawi
#1
Katie Cundale, Ranjeeta Thomas, Jullita Kenala Malava, Deborah Havens, Kevin Mortimer, Lesong Conteh
Pneumonia is the leading cause of mortality for children under five years in sub-Saharan Africa. Household air pollution has been found to increase risk of pneumonia, especially due to exposure from dirty burning biomass fuels. It has been suggested that advanced stoves, which burn fuel more efficiently and reduce smoke emissions, may help to reduce household air pollution in poor, rural settings. This qualitative study aims to provide an insight into the household costs and perceived benefits from use of the stove in Malawi...
April 13, 2017: Social Science & Medicine
https://www.readbyqxmd.com/read/28441630/winter-to-summer-change-in-vitamin-d-status-reduces-systemic-inflammation-and-bioenergetic-activity-of-human-peripheral-blood-mononuclear-cells
#2
Emily K Calton, Kevin N Keane, Raquel Raizel, Jordan Rowlands, Mario J Soares, Philip Newsholme
BACKGROUND: Vitamin D status [25(OH)D] has recently been reported to be associated with altered cellular bioenergetic profiles of peripheral blood mononuclear cells (PBMCs). No study has tracked the seasonal variation of 25(OH)D and its putative influence on whole body energy metabolism, cellular bioenergetic profiles, inflammatory markers and clinical chemistry. MATERIAL AND METHODS: Whole body energy metabolism and substrate utilisation were measured by indirect calorimetry...
April 13, 2017: Redox Biology
https://www.readbyqxmd.com/read/28441600/microplastics-in-the-antarctic-marine-system-an-emerging-area-of-research
#3
REVIEW
Catherine L Waller, Huw J Griffiths, Claire M Waluda, Sally E Thorpe, Iván Loaiza, Bernabé Moreno, Cesar O Pacherres, Kevin A Hughes
It was thought that the Southern Ocean was relatively free of microplastic contamination; however, recent studies and citizen science projects in the Southern Ocean have reported microplastics in deep-sea sediments and surface waters. Here we reviewed available information on microplastics (including macroplastics as a source of microplastics) in the Southern Ocean. We estimated primary microplastic concentrations from personal care products and laundry, and identified potential sources and routes of transmission into the region...
April 22, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28441575/estimates-of-recovery-of-the-penobscot-river-and-estuarine-system-from-mercury-contamination-in-the-1960-s
#4
Peter H Santschi, Kevin M Yeager, Kathleen A Schwehr, Kimberly J Schindler
Mercury (Hg) was discharged in the late 1960s into the Penobscot River by a chlor-alkali production facility, HoltraChem. Using total Hg concentration profiles from 56 stations (58 sediment cores) in the Penobscot River (PBR), Mendall Marsh (MM), Orland River (OR) and Penobscot Estuary (ES), and sediment accumulation rates derived using detailed profiles of total Hg concentrations and radionuclide activities ((137)Cs, (239,240)Pu, (210)Pb), recovery from system-wide Hg pollution was assessed. Total Hg concentration profiles showed sharp maxima at depths attributed in time to a 1967 release date, and were divided into two sections: the first 21years (1967-1988; rapid recovery), and the recent 21years (1988-2009; slower recovery)...
April 22, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28441436/environmental-dna-assays-for-the-sister-taxa-sauger-sander-canadensis-and-walleye-sander-vitreus
#5
Joseph C Dysthe, Kellie J Carim, Michael Ruggles, Kevin S McKelvey, Michael K Young, Michael K Schwartz
Sauger (Sander canadensis) and walleye (S. vitreus) are percid fishes that naturally co-occur throughout much of the eastern United States. The native range of sauger extends into the upper Missouri River drainage where walleye did not historically occur, but have been stocked as a sport fish. Sauger populations have been declining due to habitat loss, fragmentation, and competition with non-native species, such as walleye. To effectively manage sauger populations, it is necessary to identify areas where sauger occur, and particularly where they co-occur with walleye...
2017: PloS One
https://www.readbyqxmd.com/read/28441397/correction-functional-constraint-profiling-of-a-viral-protein-reveals-discordance-of-evolutionary-conservation-and-functionality
#6
Nicholas C Wu, C Anders Olson, Yushen Du, Shuai Le, Kevin Tran, Roland Remenyi, Danyang Gong, Laith Q Al-Mawsawi, Hangfei Qi, Ting-Ting Wu, Ren Sun
[This corrects the article DOI: 10.1371/journal.pgen.1005310.].
April 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28441249/epidemiology-of-second-primary-tumors-in-women-with-ovarian-cancer
#7
Tomi T Kanninen, Dimitrios Nasioudis, Giovanni Sisti, Kevin Holcomb, Mariarosaria Di Tommaso, Susan Khalil, Anar Gojayev, Steven S Witkin
OBJECTIVE: The last large study of second primary tumors (SPTs) in women with ovarian cancer was published in 1996, prior to major changes in the differential diagnosis and treatment. The present study reports on the incidence of SPTs in a contemporary cohort of patients with a diagnosis of ovarian cancer. METHODS: Ovarian cancer patients with a diagnosis of an ovarian malignancy between 1992 and 2012 were identified and characterized from 13 registries of the Surveillance, Epidemiology, and End Results database...
May 2017: International Journal of Gynecological Cancer
https://www.readbyqxmd.com/read/28441155/do-triglyceride-lowering-drugs-decrease-risk-of-cardiovascular-disease
#8
Kevin C Maki, Mary R Dicklin
PURPOSE OF REVIEW: This review summarizes the evidence supporting a relationship between lowering triglycerides (TGs) and TG-rich lipoprotein cholesterol (TGRL-C) levels and reduced atherosclerotic cardiovascular disease (ASCVD) event risk. RECENT FINDINGS: Data from observational investigations, including studies of genetic variants, provide evidence consistent with a causal relationship between elevations in TG and TGRL-C and greater risk for ASCVD. Randomized controlled trial evidence of ASCVD risk reduction with therapies that substantially lower TG and TGRL-C is limited by the fact that no large-scale trial results have been published from a study that enrolled subjects selected specifically on the basis of TG or TGRL-C elevation, although three such trials are underway or in the planning stages...
April 22, 2017: Current Opinion in Lipidology
https://www.readbyqxmd.com/read/28441059/effectiveness-of-neuromuscular-training-based-on-the-neuromuscular-risk-profile
#9
Timothy E Hewett, Kevin R Ford, Yingying Y Xu, Jane Khoury, Gregory D Myer
BACKGROUND: The effects of targeted neuromuscular training (TNMT) on movement biomechanics associated with the risk of anterior cruciate ligament (ACL) injuries are currently unknown. Purpose/Hypotheses: To determine the effectiveness of TNMT specifically designed to increase trunk control and hip strength. The hypotheses were that (1) TNMT would decrease biomechanical and neuromuscular factors related to an increased ACL injury risk and (2) TNMT would decrease these biomechanical and neuromuscular factors to a greater extent in athletes identified as being at a high risk for future ACL injuries...
April 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28441054/biomechanical-and-histologic-evaluation-of-the-effects-of-underwater-treadmill-exercise-on-horses-with-experimentally-induced-osteoarthritis-of-the-middle-carpal-joint
#10
Melissa R King, Kevin K Haussler, Chris E Kawcak, C Wayne McIlwraith, Raoul F Reiser, David D Frisbie, Natasha M Werpy
OBJECTIVE To evaluate the effects of exercise in an underwater treadmill (UWT) on forelimb biomechanics and articular histologic outcomes in horses with experimentally induced osteoarthritis of the middle carpal joint. ANIMALS 16 horses. PROCEDURES An osteochondral fragment was induced arthroscopically (day 0) in 1 middle carpal joint of each horse. Beginning on day 15, horses were assigned to exercise in a UWT or in the UWT without water (simulating controlled hand walking) at the same speed, frequency, and duration...
May 2017: American Journal of Veterinary Research
https://www.readbyqxmd.com/read/28441017/equilibration-of-micelle-polyelectrolyte-complexes-mechanistic-differences-between-static-and-annealed-charge-distributions
#11
Jennifer E Laaser, Michael McGovern, Yaming Jiang, Elise Lohmann, Theresa M Reineke, David C Morse, Kevin D Dorfman, Timothy P Lodge
The role of charge density and charge annealing in polyelectrolyte complexation was investigated through systematic comparison of two micelle-polyelectrolyte systems. First, poly(dimethylaminoethyl methacrylate)-block-poly(styrene) (PDMAEMA-b-PS) micelles were complexed with poly(styrenesulfonate) (PSS) at pH values above and below the pKa of PDMAEMA to investigate the role of charge annealing in the complexation process. Second, complexes of poly(DMAEMA-stat-oligo(ethylene glycol) methyl ether methacrylate)-block-poly(styrene) (P(DMAEMA-stat-OEGMA)-b-PS) micelles with the same PSS at low pH were used to investigate how the complexation process differs when the charged sites are in fixed positions along the polymer chains...
April 25, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28440792/an-extra-uterine-system-to-physiologically-support-the-extreme-premature-lamb
#12
Emily A Partridge, Marcus G Davey, Matthew A Hornick, Patrick E McGovern, Ali Y Mejaddam, Jesse D Vrecenak, Carmen Mesas-Burgos, Aliza Olive, Robert C Caskey, Theodore R Weiland, Jiancheng Han, Alexander J Schupper, James T Connelly, Kevin C Dysart, Jack Rychik, Holly L Hedrick, William H Peranteau, Alan W Flake
In the developed world, extreme prematurity is the leading cause of neonatal mortality and morbidity due to a combination of organ immaturity and iatrogenic injury. Until now, efforts to extend gestation using extracorporeal systems have achieved limited success. Here we report the development of a system that incorporates a pumpless oxygenator circuit connected to the fetus of a lamb via an umbilical cord interface that is maintained within a closed 'amniotic fluid' circuit that closely reproduces the environment of the womb...
April 25, 2017: Nature Communications
https://www.readbyqxmd.com/read/28440678/involvement-of-primary-care-physicians-in-the-decision-making-and-care-of-patients-with-breast-cancer
#13
Lauren P Wallner, Paul Abrahamse, Jaspreet K Uppal, Christopher R Friese, Ann S Hamilton, Kevin C Ward, Steven J Katz, Sarah T Hawley
Purpose Collaborative care between cancer specialists and primary care providers (PCPs) may improve the delivery of high-quality cancer care. Yet, patient perspectives about how involved the PCPs were in their breast cancer care and treatment decisions remain unknown. Patients and Methods A weighted random sample of women newly diagnosed with breast cancer in 2013 to 2014, as reported to the SEER registries in Los Angeles, California, and Georgia, were sent a survey approximately 6 months after diagnosis (N = 2,279, 71% response rate)...
November 20, 2016: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28440627/composite-micro-posts-with-high-dry-adhesion-strength
#14
Helen K Minsky, Kevin T Turner
Interfaces with enhanced and tunable adhesion have applications in a broad range of fields, including microtransfer printing of semiconductors, grippers on robots, and component handling in manufacturing. Here, a composite post structure with a stiff core and compliant shell is used to achieve enhanced adhesion under normal loading. Loading the composite structure in shear significantly reduces the effective adhesion strength, thus providing tunability. The composite posts can be used as stamps in microtransfer printing processes or as building blocks of large area tunable surfaces composed of arrays of posts...
April 25, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28440369/a-variable-stiffness-dielectric-elastomer-actuator-based-on-electrostatic-chucking
#15
Hiroya Imamura, Kevin Kadooka, Minoru Taya
Dielectric elastomer actuators (DEA) are one type of promising artificial muscle; however, applications of bending-type DEA for robotic end-effectors may be limited by their low stiffness and ability to resist external loads without buckling. Unimorph DEA can produce large out-of-plane deformation suitable for use as robotic end effectors; however, design of such actuators for large displacement comes at the cost of low stiffness and blocking force. This work proposes and demonstrates a variable stiffness dielectric elastomer actuator (VSDEA) consisting of a plurality of unimorph DEA units operating in parallel, which can exhibit variable electrostatic chucking to modulate the structure's bending stiffness...
April 25, 2017: Soft Matter
https://www.readbyqxmd.com/read/28440314/the-peripheral-blood-proteome-signature-of-idiopathic-pulmonary-fibrosis-is-distinct-from-normal-and-is-associated-with-novel-immunological-processes
#16
David N O'Dwyer, Katy C Norman, Meng Xia, Yong Huang, Stephen J Gurczynski, Shanna L Ashley, Eric S White, Kevin R Flaherty, Fernando J Martinez, Susan Murray, Imre Noth, Kelly B Arnold, Bethany B Moore
Idiopathic pulmonary fibrosis (IPF) is a progressive and fatal interstitial pneumonia. The disease pathophysiology is poorly understood and the etiology remains unclear. Recent advances have generated new therapies and improved knowledge of the natural history of IPF. These gains have been brokered by advances in technology and improved insight into the role of various genes in mediating disease, but gene expression and protein levels do not always correlate. Thus, in this paper we apply a novel large scale high throughput aptamer approach to identify more than 1100 proteins in the peripheral blood of well-characterized IPF patients and normal volunteers...
April 25, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28440235/the-effect-of-solid-pancreatic-mass-lesions-on-pancreatic-duct-diameter-at-endoscopic-ultrasound
#17
Anand C Baxi, Qingwei Jiang, Jinghua Hao, Zhuo Yang, Kevin Woods, Steven Keilin, Field F Willingham, Qiang Cai
OBJECTIVES: To evaluate the effect of solid pancreatic masses on the pancreatic duct (PD) at the endoscopic ultrasound (EUS) and the relationship of the location/size of a mass and PD dilation. MATERIALS AND METHODS: Patients who underwent EUS for pancreatic indications from 2011 to 2013 at a single center were retrospectively identified. Those with biopsies that revealed adenocarcinoma or neuroendocrine tumors in the pancreas were identified and PD size was ascertained from EUS, computed tomography, or magnetic resonance imaging...
March 2017: Endoscopic Ultrasound
https://www.readbyqxmd.com/read/28440222/dual-leucine-zipper-kinase-dependent-perk-activation-contributes-to-neuronal-degeneration-following-insult
#18
Martin Larhammar, Sarah Huntwork-Rodriguez, Zhiyu Jiang, Hilda Solanoy, Arundhati Sengupta Ghosh, Bei Wang, Joshua S Kaminker, Kevin Huang, Jeffrey Eastham-Anderson, Michael Siu, Zora Modrusan, Madeline M Farley, Marc Tessier-Lavigne, Joseph W Lewcock, Trent A Watkins
The PKR-like endoplasmic reticulum kinase (PERK) arm of the Integrated Stress Response (ISR) is implicated in neurodegenerative disease, although the regulators and consequences of PERK activation following neuronal injury are poorly understood. Here we show that PERK signaling is a component of the mouse MAP kinase neuronal stress response controlled by the Dual Leucine Zipper Kinase (DLK) and contributes to DLK-mediated neurodegeneration. We find that DLK-activating insults ranging from nerve injury to neurotrophin deprivation result in both c-Jun N-terminal Kinase (JNK) signaling and the PERK- and ISR-dependent upregulation of the Activating Transcription Factor 4 (ATF4)...
April 25, 2017: ELife
https://www.readbyqxmd.com/read/28439536/types-and-rates-of-forest-disturbance-in-brazilian-legal-amazon-2000-2013
#19
Alexandra Tyukavina, Matthew C Hansen, Peter V Potapov, Stephen V Stehman, Kevin Smith-Rodriguez, Chima Okpa, Ricardo Aguilar
Deforestation rates in primary humid tropical forests of the Brazilian Legal Amazon (BLA) have declined significantly since the early 2000s. Brazil's national forest monitoring system provides extensive information for the BLA but lacks independent validation and systematic coverage outside of primary forests. We use a sample-based approach to consistently quantify 2000-2013 tree cover loss in all forest types of the region and characterize the types of forest disturbance. Our results provide unbiased forest loss area estimates, which confirm the reduction of primary forest clearing (deforestation) documented by official maps...
April 2017: Science Advances
https://www.readbyqxmd.com/read/28439398/a-practical-approach-to-the-pharmacological-management-of-hypertension-in-older-people
#20
REVIEW
Nikesh Parekh, Amy Page, Khalid Ali, Kevin Davies, Chakravarthi Rajkumar
Hypertension is the leading cause of cardiovascular (CV) morbidity and mortality in adults over the age of 65. The first part of this paper is an overview, summarizing the current guidelines on the pharmacological management of hypertension in older adults in Europe and the USA, and evidence from key trials that contributed to the guidelines. In the second part of the paper, we will discuss the major challenges of managing hypertension in the context of multimorbidity, including frailty, orthostatic hypotension (OH), falls and cognitive impairment that are associated with ageing...
April 2017: Therapeutic Advances in Drug Safety
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