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https://www.readbyqxmd.com/read/28645178/ecological-imperatives-for-aquatic-carbon-dioxide-concentrating-mechanisms
#1
Stephen C Maberly, Brigitte Gontero
In aquatic environments, the concentration of inorganic carbon is spatially and temporally variable and CO2 can be substantially oversaturated or depleted. Depletion of CO2 plus low rates of diffusion cause inorganic carbon to be more limiting in aquatic than terrestrial environments, and the frequency of species with a CO2-concentrating mechanism (CCM), and their contribution to productivity, is correspondingly greater. Aquatic photoautotrophs may have biochemical or biophysical CCMs and exploit CO2 from the sediment or the atmosphere...
June 22, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/28645085/extending-the-functionality-of-the-slurry-ferrihydrite-dgt-method-performance-evaluation-for-the-measurement-of-vanadate-arsenate-antimonate-and-molybdate-in-water
#2
Shu Zhang, Paul N Williams, Chun-Yang Zhou, Lena Q Ma, Jun Luo
The monitoring of oxyanions in waters, presents significant challenges due to their relatively low concentrations, and a characteristically changeable/unstable/reactive geochemistry with high spatial and temporal turnover. This results in a very heterogeneous pattern of mobility and bioavailability, which is difficult to capture reliably and in a cost effective manner. The diffusive gradients in thin-films (DGT) technique is a popular analytical tool for testing water quality, primarily because it provides a time-integrated measurement...
June 18, 2017: Chemosphere
https://www.readbyqxmd.com/read/28645068/fracture-roughness-and-phase-transformation-in-cad-cam-milling-and-subsequent-surface-treatments-of-lithium-metasilicate-disilicate-glass-ceramics
#3
Abdur-Rasheed Alao, Richard Stoll, Xiao-Fei Song, John R Abbott, Yu Zhang, Jaafar Abduo, Ling Yin
This paper studied surface fracture, roughness and morphology, phase transformations, and material removal mechanisms of lithium metasilicate/disilicate glass ceramics (LMGC/LDGC) in CAD/CAM-milling and subsequent surface treatments. LMGC (IPS e.max CAD) blocks were milled using a chairside dental CAD/CAM milling unit and then treated in sintering, polishing and glazing processes. X-ray diffraction was performed on all processed surfaces. Scanning electron microscopy (SEM) was applied to analyse surface fracture and morphology...
June 15, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28644971/simultaneous-silencing-of-ghfad2-1-and-ghfatb-enhances-the-quality-of-cottonseed-oil-with-high-oleic-acid
#4
Feng Liu, Yan-Peng Zhao, Hua-Guo Zhu, Qian-Hao Zhu, Jie Sun
Cottonseed oil has become an important source of edible oil due to its significant cost advantage. However, there is a growing concern over its fatty acid composition and nutritional value. In Gossypium hirsutum, GhFAD2-1 and GhFATB encoding the microsomal oleate desaturase and palmitoyl-acyl carrier protein thioesterase, respectively, play critical roles in regulating the proportions of saturated and polyunsaturated fatty acids in cottonseed lipids. In this study, RNAi technology was used to simultaneously inhibit the expression levels of GhFAD2-1 and GhFATB to improve the quality of cottonseed oil by increasing oleic acid content...
June 15, 2017: Journal of Plant Physiology
https://www.readbyqxmd.com/read/28644963/self-report-and-subjective-history-in-the-diagnosis-of-painful-neck-conditions-a-systematic-review-of-diagnostic-accuracy-studies
#5
REVIEW
Adam Mizer, Alexa Bachmann, Jessie Gibson, Megan Burrowbridge Donaldson
Rising healthcare costs and inherent risks with over-utilizing diagnostic imaging require a quality subjective examination to improve effectiveness and time management of physical examinations. This systematic review investigates the diagnostic accuracy of subjective history and self-report items to determine if there is significant alteration in the probability of identifying specific painful neck conditions. Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines were followed. INCLUSION CRITERIA: 1) Written in the English language 2) Cervical pain with/without referred upper extremity or head pain 3) Subjective history or self-report items 4) Study designs that reported diagnostic statistics or allowed calculation of sensitivities, specificities, diagnostic odds ratios, and likelihood ratios 5) used a reference standard that has a sensitivity or specificity ≥75% or a diagnostic tool that is strongly supported in the literature where this data is not available...
June 8, 2017: Musculoskeletal Science & Practice
https://www.readbyqxmd.com/read/28644930/trends-in-open-and-endoscopic-cubital-tunnel-release-in-the-medicare-patient-population
#6
Tsun Yee Law, Zachary S Hubbard, Lee Onn Chieng, Harvey W Chim
BACKGROUND: Cubital tunnel syndrome (CUT) is the second most common peripheral neuropathy with an annual incidence of 24.7 per 100 000, affecting nearly twice as many men as women. With increasing focus on cost-effectiveness and cost-containment in medicine, a critical understanding of utilization of health care resources for open and endoscopic approaches for cubital tunnel release is of value. The purpose of this study was to evaluate the costs and utilization trends of open and endoscopic cubital tunnel release...
July 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28644843/a-high-density-genetic-map-and-qtl-analysis-of-agronomic-traits-in-foxtail-millet-setaria-italica-l-p-beauv-using-rad-seq
#7
Jun Wang, Zhilan Wang, Xiaofen Du, Huiqing Yang, Fang Han, Yuanhuai Han, Feng Yuan, Linyi Zhang, Shuzhong Peng, Erhu Guo
Foxtail millet (Setaria italica), a very important grain crop in China, has become a new model plant for cereal crops and biofuel grasses. Although its reference genome sequence was released recently, quantitative trait loci (QTLs) controlling complex agronomic traits remains limited. The development of massively parallel genotyping methods and next-generation sequencing technologies provides an excellent opportunity for developing single-nucleotide polymorphisms (SNPs) for linkage map construction and QTL analysis of complex quantitative traits...
2017: PloS One
https://www.readbyqxmd.com/read/28644768/error-feedback-frequency-affects-automaticity-but-not-accuracy-and-consistency-after-extensive-motor-skill-practice
#8
Daniel Krause, Manfred Agethen, Christina Zobe
Earlier studies addressed the effects of feedback frequency on movement accuracy and consistency. The authors additionally addressed the effects on motor automatization. High error feedback frequencies may induce attentional control processes and impede motor automatization. In a pre-post design, 42 participants were assigned to 2 groups with different feedback frequencies and practiced an arm movement sequence with 760 trials in 5 sessions. The 100% group practiced with feedback on 3 movement reversals of the sequence after each trial...
June 23, 2017: Journal of Motor Behavior
https://www.readbyqxmd.com/read/28644696/varicella-vaccination-the-global-experience
#9
Peter Wutzler, Paolo Bonanni, Margaret Burgess, Anne Gershon, Marco Aurélio Sáfadi, Giacomo Casabona
Introduction Varicella, although a frequently benign childhood disease, nevertheless represents a considerable health burden. WHO recommends including varicella vaccines in universal routine vaccination programs, and maintaining coverage >80%. Many countries have successfully introduced varicella vaccination and have benefited from lower disease burden, but many others have not adopted the vaccine. Reasons include cost commitment for a 'mild childhood disease' or concerns that vaccination will shift varicella to older age groups or increase herpes zoster incidence...
June 23, 2017: Expert Review of Vaccines
https://www.readbyqxmd.com/read/28644617/dynamic-covalent-chemistry-of-carbon-dioxide-opportunities-to-address-environmental-issues
#10
Jean Septavaux, Geoffroy Germain, Julien Leclaire
Extraction and purification of basic chemicals from complex mixtures has been a persistent issue throughout the development of the chemical sciences. The chemical industry and academic research have grown over the centuries by following a deconstruction-reconstruction approach, reminiscent of the metabolism process. Chemists have designed and optimized extraction, purification, and transformation processes of molecules from natural deposits (fossil fuels, biomass, ores), in order to reassemble them into complex adducts...
June 23, 2017: Accounts of Chemical Research
https://www.readbyqxmd.com/read/28644607/electrochemical-exfoliation-of-graphite-in-aqueous-sodium-halide-electrolytes-towards-low-oxygen-content-graphene-for-energy-and-environmental-applications
#11
Jose Maria Munuera, Juan Ignacio Paredes, Marina Enterria, Ana Pagán, Silvia Villar-Rodil, Manuel Fernando R Pereira, J I Martins, José L Figueiredo, Jose Luis Cenis, Amelia Martinez-Alonso, Juan Manuel D Tascon
Graphene and graphene-based materials have shown great promise in many technological applications, but their large-scale production and processing by simple and cost-effective means still constitute significant issues in the path of their widespread implementation. Here, we investigate a straightforward method for the preparation of a ready-to-use and low oxygen content graphene material that is based on electrochemical (anodic) delamination of graphite in aqueous medium with sodium halides as the electrolyte...
June 23, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28644585/a-cost-minimisation-analysis-of-noacs-compared-to-warfarin-to-attain-therapeutic-anticoagulation-amongst-af-patients-pre-and-post-cardioversion
#12
M O'Shea, A Murphy, A Kirby, G Allen, S O'Shea, R Curtin
Atrial fibrillation can be managed with anticoagulation and restoration of normal sinus rhythm using direct current cardioversion (DCCV). To reduce the risk of thromboembolism, anticoagulation pre-and-post DCCV is recommended. This study investigates the cost effectiveness of using NOACs compared to warfarin to attain therapeutic anticoagulation amongst AF patients pre-and-post DCCV. Propensity score matching revealed no statistically significant difference in outcomes from using NOACs and Warfarin. A cost minimisation study was performed; demonstrating a cost differential of €209 between those administered NOACs and warfarin pre- and post-DCCV...
December 12, 2016: Irish Medical Journal
https://www.readbyqxmd.com/read/28644397/relationship-between-remote-sensing-data-plant-biomass-and-soil-nitrogen-dynamics-in-intensively-managed-grasslands-under-controlled-conditions
#13
Christoph Knoblauch, Conor Watson, Clara Berendonk, Rolf Becker, Nicole Wrage-Mönnig, Florian Wichern
The sustainable use of grasslands in intensive farming systems aims to optimize nitrogen (N) inputs to increase crop yields and decrease harmful losses to the environment at the same time. To achieve this, simple optical sensors may provide a non-destructive, time- and cost-effective tool for estimating plant biomass in the field, considering spatial and temporal variability. However, the plant growth and related N uptake is affected by the available N in the soil, and therefore, N mineralization and N losses...
June 23, 2017: Sensors
https://www.readbyqxmd.com/read/28644360/quality-improvement-in-pediatric-endoscopy-a-clinical-report-from-the-naspghan-endoscopy-committee
#14
Robert E Kramer, Catharine M Walsh, Diana G Lerner, Douglas S Fishman
The current era of healthcare reform emphasizes the provision of effective, safe, equitable, high-quality, and cost-effective care. Within the realm of gastrointestinal endoscopy in adults, renewed efforts are in place to accurately define and measure quality indicators across the spectrum of endoscopic care. In pediatrics, however, this movement has been less-defined and lacks much of the evidence-base that supports these initiatives in adult care. A need, therefore, exists to help define quality metrics tailored to pediatric practice and provide a toolbox for the development of robust quality improvement (QI) programs within pediatric endoscopy units...
July 2017: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/28644317/group-b-streptococci-screening-before-repeat-cesarean-delivery-a-cost-effectiveness-analysis
#15
Jianqiong Zheng, Hongping Zhang, Haiying Chen
No abstract text is available yet for this article.
July 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28644143/the-elevated-nlr-plr-and-plt-may-predict-the-prognosis-of-patients-with-colorectal-cancer-a-systematic-review-and-metaanalysis
#16
Jie Zhang, Hong-Ying Zhang, Jia Li, Xin-Yu Shao, Chun-Xia Zhang
Recently, several studies have reported that inflammatory response and elevated platelet counts may be associated with the poor prognosis of colorectal cancer. This meta-analysis was designed to analyze and evaluate the prognostic role of elevated preoperative or pretreatment neutrophils-to-lymphocytes ratio, platelet-to-lymphocytes ratio or platelet counts in patients with colorectal cancer. We searched PubMed, EMBASE, Cochrane Library and Web of Science to April, 2016. A total of 23 studies (N = 11762 participants) were included for this meta-analysis...
June 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/28644119/damage-control-plating-in-open-tibial-shaft-fractures-a-cheaper-and-equally-effective-alternative-to-spanning-external-fixation
#17
Paul S Whiting, Phillip M Mitchell, Aaron M Perdue, Arnold J Silverberg, Sarah E Greenberg, Rachel V Thakore, Vasanth Sathiyakumar, Hassan R Mir, William T Obremskey, Manish K Sethi
The purpose of this study was to evaluate damage control plating (DCP) as an alternative to external fixation (EF) in the provisional stabilization of open tibial shaft fractures. Through retrospective analysis, the study found 445 patients who underwent operative fixation for tibial shaft fractures from 2008 to 2012. Twenty patients received DCP or EF before intramedullary nailing with a minimum follow-up of 3 months. Charts and radiographs were reviewed for postoperative complications. Hospital charges were reviewed for implant costs...
2017: Journal of Surgical Orthopaedic Advances
https://www.readbyqxmd.com/read/28644115/evaluation-of-the-effectiveness-and-cost-effectiveness-of-lightweight-fibreglass-heel-casts-in-the-management-of-ulcers-of-the-heel-in-diabetes-a-randomised-controlled-trial
#18
William Jeffcoate, Frances Game, Vivienne Turtle-Savage, Alison Musgrove, Patricia Price, Wei Tan, Lucy Bradshaw, Alan Montgomery, Deborah Fitzsimmons, Angela Farr, Thomas Winfield, Ceri Phillips
BACKGROUND: Ulcers of the foot in people with diabetes mellitus are slow to heal and result in considerable cost and patient suffering. The prognosis is worst for ulcers of the heel. OBJECTIVE: To assess both the clinical effectiveness and the cost-effectiveness of lightweight fibreglass casts in the management of heel ulcers. DESIGN: A pragmatic, multicentre, parallel, observer-blinded randomised controlled trial. A central randomisation centre used a computer-generated random number sequence to allocate participants to groups...
May 2017: Health Technology Assessment: HTA
https://www.readbyqxmd.com/read/28644101/safety-and-cost-efficiency-of-a-restrictive-transfusion-protocol-in-patients-with-traumatic-brain-injury
#19
Laura B Ngwenya, Catherine G Suen, Phiroz E Tarapore, Geoffrey T Manley, Michael C Huang
OBJECTIVE Blood loss and moderate anemia are common in patients with traumatic brain injury (TBI). However, despite evidence of the ill effects and expense of the transfusion of packed red blood cells, restrictive transfusion practices have not been universally adopted for patients with TBI. At a Level I trauma center, the authors compared patients with TBI who were managed with a restrictive (target hemoglobin level > 7 g/dl) versus a liberal (target hemoglobin level > 10 g/dl) transfusion protocol. This study evaluated the safety and cost-efficiency of a hospital-wide change to a restrictive transfusion protocol...
June 23, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28644095/impact-of-adherence-to-antidepressants-on-healthcare-outcomes-and-costs-among-patients-with-type-2-diabetes-and-comorbid-major-depressive-disorder
#20
Charles Vega, Russell V Becker, Lisa Mucha, Betty H Lorenz, Michael T Eaddy, Augustina O Ogbonnaya
OBJECTIVE: To evaluate the association between adherence to antidepressants and an effect on clinical outcomes and healthcare costs in patients with major depressive disorder (MDD) and comorbid type 2 diabetes (T2D). METHODS: This retrospective study used MarketScan claims data from January 2012 to March 2014. Study entry was the first claim for an antidepressant and a diagnosis code for MDD and T2D in the prior 6 months. Adherence and persistence to antidepressant therapy in the first 180 days were defined as medication possession ratio (MPR) ≥80% and length of therapy (LOT), with no treatment gap of >15 days, respectively...
June 23, 2017: Current Medical Research and Opinion
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