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https://www.readbyqxmd.com/read/28727912/multivariate-analysis-for-quantification-of-plutonium-iv-in-nitric-acid-based-on-absorption-spectra
#1
Amanda M Lines, Susan R Adami, Sergey I Sinkov, Gregg J Lumetta, Samuel A Bryan
Development of more effective, reliable, and fast methods for monitoring process streams is a growing opportunity for analytical applications. Many fields can benefit from on-line monitoring, including the nuclear fuel cycle where improved methods for monitoring radioactive materials will facilitate maintenance of proper safeguards and ensure safe and efficient processing of materials. On-line process monitoring with a focus on optical spectroscopy can provide a fast, non-destructive method for monitoring chemical species...
July 20, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28727871/biosimilars-in-oncology-in-the-united-states-a-review
#2
Chadi Nabhan, Sandeep Parsad, Anthony R Mato, Bruce A Feinberg
Importance: Biosimilars are biological medicines that contain a highly similar version of the active substance of an already approved biologic reference product. The availability of biosimilars might provide an opportunity to lower health care expenditures as a result of the inherent price competition with their reference product. Understanding how biosimilar cancer drugs are regulated, approved, and paid for, as well as their impact in a value-based care environment, is essential for physicians and other stakeholders in oncology...
July 20, 2017: JAMA Oncology
https://www.readbyqxmd.com/read/28727724/grandmothering-and-cognitive-resources-are-required-for-the-emergence-of-menopause-and-extensive-post-reproductive-lifespan
#3
Carla Aimé, Jean-Baptiste André, Michel Raymond
Menopause, the permanent cessation of ovulation, occurs in humans well before the end of the expected lifespan, leading to an extensive post-reproductive period which remains a puzzle for evolutionary biologists. All human populations display this particularity; thus, it is difficult to empirically evaluate the conditions for its emergence. In this study, we used artificial neural networks to model the emergence and evolution of allocation decisions related to reproduction in simulated populations. When allocation decisions were allowed to freely evolve, both menopause and extensive post-reproductive life-span emerged under some ecological conditions...
July 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/28727209/a-dual-flip-angle-3d-bssfp-magnetization-transfer-like-method-to-differentiate-between-recent-and-old-myocardial-infarction
#4
Philippe Germain, Soraya El Ghannudi, Aissam Labani, Mi Y Jeung, Afshin Gangi, Patrick Ohlmann, Catherine Roy
BACKGROUND: Magnetic resonance imaging (MRI) tissue signal is modulated by magnetization transfer (MT) phenomena, intrinsically induced by balanced steady-state free precession (bSSFP) imaging. PURPOSE: To investigate the possible value of such a MT-like bSSFP approach in two clinical settings involving focal myocardial lesions highligthed by late gadolinium enhancement (LGE+): edema induced by recent myocardial infarction (MI) and fibrotic scar related to chronic infarction...
July 20, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28726887/standard-and-rapid-scan-infrared-spectroscopic-studies-of-o-xylene-transformations-in-terms-of-pore-arrangement-of-10-ring-zeolites-2d-cos-analysis
#5
Kinga Gołąbek, Karolina A Tarach, Kinga Góra-Marek
This study attempts to offer an insight into o-xylene isomerization process in terms of steric constraints of 10-ring zeolites. The zeolites under investigation, i.e. ZSM-5, IM-5 and TNU-9, have purely microporous structures and crystals with the same shape and offer comparable protonic functionality, both in manner of amount and strength of Si(OH)Al groups. Under these conditions, micropore topology is recognised to deliver differentiated catalytic performance of each zeolitic structure. Moreover, 10-ring zeolites of reduced dimensionality, i...
July 20, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28726884/lithium-dendrite-growth-mechanisms-in-polymer-electrolytes-and-prevention-strategies
#6
Pallab Barai, Kenneth Higa, Venkat Srinivasan
Future lithium-ion batteries must use lithium metal anodes to fulfill the demands of high energy density applications with the potential to enable affordable electric cars with 350-mile range. However, dendrite growth during charging prevents the commercialization of this technology. It has been demonstrated that the presence of a compressive mechanical stress field around a dendritic protrusion prevents growth. Several techniques based on this concept, such as protective layers, externally applied pressure and solid electrolytes have been investigated by other researchers...
July 20, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28726695/a-combined-reed-bed-freezing-bed-technology-for-septage-treatment-and-reuse-in-cold-climate-regions
#7
C Kinsley, K Kennedy, A Crolla
A combined reed bed-freezing bed (RB-FB) technology was effective at treating septage under Canadian climatic conditions over a 5-year period with average loading rates of 82-104 kg TS/m(2)/y. Varying hydraulic and solid loading rates as well as the increasing sludge cake with time had little to no effect on treatment efficiency, with almost complete removal of organic matter, solids, heavy metals and nutrients. Filtrate concentrations varied significantly between the freeze-thaw and growing seasons for many parameters, although the differences were not important from a treatment or reuse perspective with filtrate quality similar to a low to medium strength domestic wastewater...
July 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/28726440/ptsd-symptoms-predict-outcome-in-trauma-informed-treatment-of-intimate-partner-aggression
#8
Suzannah K Creech, Alexandra Macdonald, Justin K Benzer, Gina M Poole, Christopher M Murphy, Casey T Taft
OBJECTIVE: This study sought to extend findings from a randomized controlled trial of the Strength at Home Men's Program (SAH-M) for intimate partner aggression (IPA) in military veterans by examining the impact of pretreatment posttraumatic stress disorder (PTSD) symptoms on treatment efficacy, and by examining new data on postintervention follow-up for individuals who received SAH-M after completing the enhanced treatment as usual (ETAU) wait-list control condition. METHOD: Using data from 125 male veterans who attended the SAH-M program immediately after an intake assessment or after waiting 6-month in the ETAU condition, this study used generalized linear modeling to examine predictors of physical and psychological IPA over a 9-month period of time...
July 20, 2017: Journal of Consulting and Clinical Psychology
https://www.readbyqxmd.com/read/28726035/evaluation-of-physical-activity-in-sarcopenic-conditions-of-kidney-transplantation-recipients
#9
Masaaki Yanishi, Hiroyasu Tsukaguchi, Yutaka Kimura, Yuya Koito, Kenji Yoshida, Maiko Seo, Eri Jino, Motohiko Sugi, Hidefumi Kinoshita, Tadashi Matsuda
INTRODUCTION: Sarcopenia is an involuntary decline in skeletal muscle mass, strength, and function that normally proceed with aging but may develop faster under some chronic disease conditions. In this study, we compared the physical activity between sarcopenia and non-sarcopenia subgroups in kidney transplant recipients. METHODS: Fifty-eight recipients (42 males and 16 females) were enrolled in this study. Mean age of the recipients was 46.6 ± 12.7 years. Mean duration of dialysis was 2...
July 19, 2017: International Urology and Nephrology
https://www.readbyqxmd.com/read/28725484/logarithmic-sensing-in-bacillus-subtilis-aerotaxis
#10
Filippo Menolascina, Roberto Rusconi, Vicente I Fernandez, Steven Smriga, Zahra Aminzare, Eduardo D Sontag, Roman Stocker
Aerotaxis, the directed migration along oxygen gradients, allows many microorganisms to locate favorable oxygen concentrations. Despite oxygen's fundamental role for life, even key aspects of aerotaxis remain poorly understood. In Bacillus subtilis, for example, there is conflicting evidence of whether migration occurs to the maximal oxygen concentration available or to an optimal intermediate one, and how aerotaxis can be maintained over a broad range of conditions. Using precisely controlled oxygen gradients in a microfluidic device, spanning the full spectrum of conditions from quasi-anoxic to oxic (60 n mol/l-1 m mol/l), we resolved B...
2017: NPJ Systems Biology and Applications
https://www.readbyqxmd.com/read/28725437/towards-evidence-based-strength-training-a-comparison-of-muscle-forces-during-deadlifts-goodmornings-and-split-squats
#11
Florian Schellenberg, William R Taylor, Silvio Lorenzetti
BACKGROUND: To ensure an efficient and targeted adaptation with low injury risk during strength exercises, knowledge of the participant specific internal loading conditions is essential. The goal of this study was to calculate the lower limb muscles forces during the strength exercises deadlifts, goodmornings and splits squats by means of musculoskeletal simulation. METHODS: 11 participants were assessed performing 10 different variations of split squats by varying the step length as well as the maximal frontal tibia angle, and 13 participants were measured performing deadlift and goodmorning exercises...
2017: BMC Sports Science, Medicine and Rehabilitation
https://www.readbyqxmd.com/read/28725265/two-bifunctional-enzymes-from-the-marine-protist-thraustochytrium-roseum-biochemical-characterization-of-wax-ester-synthase-acyl-coa-diacylglycerol-acyltransferase-activity-catalyzing-wax-ester-and-triacylglycerol-synthesis
#12
Nannan Zhang, Zejing Mao, Ling Luo, Xia Wan, Fenghong Huang, Yangmin Gong
BACKGROUND: Triacylglycerols (TAGs) and wax esters (WEs) are important neutral lipids which serve as energy reservoir in some plants and microorganisms. In recent years, these biologically produced neutral lipids have been regarded as potential alternative energy sources for biofuel production because of the increased interest on developing renewable and environmentally benign alternatives for fossil fuels. In bacteria, the final step in TAG and WE biosynthetic pathway is catalyzed by wax ester synthase/acyl coenzyme A (acyl-CoA):diacylglycerol acyltransferase (WS/DGAT)...
2017: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/28723816/importance-of-physical-qualities-for-speed-and-change-of-direction-ability-in-elite-female-soccer-players
#13
Stacey Emmonds, G Nicholson, C Beggs, B Jones, A Bissas
The purpose of this study was to determine the importance of physical qualities for speed and change of direction (CoD) ability in female soccer players. Data were collected on 10 female soccer players who were part of a professional English Women's Super League team. Player assessments included anthropometric (stature and body mass), body composition (dual-energy X-ray absorptiometry), speed (10m, 30m sprint), CoD ability (505 agility), aerobic (Yo-Yo Intermittent Recovery Test), lower-body strength (bilateral knee extensions) and power (countermovement jump [CMJ], squat jump [SJ], 30cm drop jump [DJ]) measures...
July 17, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28723759/determining-the-relationship-of-kinesiophobia-with-respiratory-functions-and-functional-capacity-in-ankylosing-spondylitis
#14
Göktuğ Er, Ender AngIn
Ankylosing spondylitis (AS) is a common inflammatory rheumatic disease that affects the axial skeleton, causes inflammatory lower back pain, and structural and functional disorders, which affect quality of life negatively.The purpose of this study is to investigate the effects of kinesiophobia in AS on pulmonary function tests (PFTs) and functional performance.Thirty-one individuals with AS (n = 19 male, n = 12 female) who were suitable on the basis of the Modified New York (MNY) criteria were included in the study...
July 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28722400/experimental-measurements-and-surface-complexation-modeling-of-u-vi-adsorption-onto-multilayered-graphene-oxide-the-importance-of-adsorbate-adsorbent-ratios
#15
Thomas A Duster, Jennifer E S Szymanowski, Jeremy B Fein
Surface complexation models use experimental adsorption measurements to calculate stability constants that quantify the thermodynamic stability of adsorbed species. However, these constants are often poorly constrained due to nearly complete removal of the solute from solution and/or because the tested adsorbate:adsorbent ratios are not varied sufficiently. Using data sets that quantify the adsorption of U(VI) to multilayered graphene oxide (MLGO), we tested whether three different U(VI):MLGO ratios (3 ppm U; 20-210 mg L(-1) MLGO) affect the ability of nonelectrostatic and diffuse layer models to predict U(VI) adsorption behaviors across a range of ionic strength (1-100 mM) and pH (2-9...
July 19, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28722016/silk-micrococoons-for-protein-stabilisation-and-molecular-encapsulation
#16
Ulyana Shimanovich, Francesco S Ruggeri, Erwin De Genst, Jozef Adamcik, Teresa P Barros, David Porter, Thomas Müller, Raffaele Mezzenga, Christopher M Dobson, Fritz Vollrath, Chris Holland, Tuomas P J Knowles
Naturally spun silks generate fibres with unique properties, including strength, elasticity and biocompatibility. Here we describe a microfluidics-based strategy to spin liquid native silk, obtained directly from the silk gland of Bombyx mori silkworms, into micron-scale capsules with controllable geometry and variable levels of intermolecular β-sheet content in their protein shells. We demonstrate that such micrococoons can store internally the otherwise highly unstable liquid native silk for several months and without apparent effect on its functionality...
July 19, 2017: Nature Communications
https://www.readbyqxmd.com/read/28721663/influence-of-direct-or-indirect-contact-for-the-cytotoxicity-and-blood-compatibility-of-spider-silk
#17
J W Kuhbier, V Coger, J Mueller, C Liebsch, F Schlottmann, V Bucan, P M Vogt, S Strauss
Spider silk became one of the most-researched biomaterials in the last years due to its unique mechanical strength and most favourable chemical composition for tissue engineering purposes. However, standardized analysis of cytocompatibility is missing. Therefore, the aim of this study was to investigate hemolysis, cytotoxicity of native spider silk as well as influences on the cell culture medium. Changes of cell culture medium composition, osmolarity as well as glucose and lactate content were determined via ELISA measurement...
August 2017: Journal of Materials Science. Materials in Medicine
https://www.readbyqxmd.com/read/28721100/shear-bond-strength-of-different-surface-treatments-in-bulk-fill-microhybrid-and-nanoparticle-repair-resins
#18
Rudys Rodolfo de Jesus Tavarez, Lauber Jose Dos Santos Almeida Júnior, Tayanne Christine Gomes Guará, Izabella Santos Ribeiro, Etevaldo Matos Maia Filho, Leily Macedo Firoozmand
OBJECTIVES: The purpose of this study was to evaluate the influence of surface treatment and different types of composite resin on the microshear bond strength of repairs. MATERIALS AND METHODS: Seventy-two specimens (n=72) were prepared using a nanoparticle resin and stored in artificial saliva at 37 ± 1°C for 24 h. After this period, the specimens (n=24) were restored with microhybrid resin P60 (3M ESPE), nanoparticle resin Filtek Z350 (3M ESPE), and Bulk Fill Surefil SDR Flow (Dentsply) composite resins...
2017: Clinical, Cosmetic and Investigational Dentistry
https://www.readbyqxmd.com/read/28720340/mechanical-strength-and-fracture-point-of-a-dental-implant-under-certification-conditions-a-numerical-approach-by-finite-element-analysis
#19
Guillermo de la Rosa Castolo, Sonia V Guevara Perez, Pierre-Jean Arnoux, Laurent Badih, Franck Bonnet, Michel Behr
STATEMENT OF PROBLEM: Implant prosthodontics provides high-quality outcomes thanks to recent technological developments and certification procedures such as International Organization for Standardization (ISO) standard 14801. However, these certification tests are costly, and the result is highly uncertain as the influence of design variables (materials and structure) is still unknown. The design process could be significantly improved if the influence of design parameters were identified...
July 15, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28720232/meta-analysis-of-the-predictive-factors-of-postpartum-fatigue
#20
Hanan A Badr, Jaclene A Zauszniewski
PURPOSE: Nearly 64% of new mothers are affected by fatigue during the postpartum period, making it the most common problem that a woman faces as she adapts to motherhood. Postpartum fatigue can lead to serious negative effects on the mother's health and the newborn's development and interfere with mother-infant interaction. The aim of this meta-analysis was to identify predictive factors of postpartum fatigue and to document the magnitude of their effects using effect sizes. METHOD: We used two search engines, PubMed and Google Scholar, to identify studies that met three inclusion criteria: (a) the article was written in English, (b) the article studied the predictive factors of postpartum fatigue, and (c) the article included information about the validity and reliability of the instruments used in the research...
August 2017: Applied Nursing Research: ANR
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