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https://www.readbyqxmd.com/read/28535540/development-of-a-synthetic-substrate-for-the-in-vitro-performance-testing-of-sunscreens
#1
Myriam Sohn, Camille Malburet, Laure Baptiste, Yvonne Prigl
PURPOSE: Polymethylmethacrylate (PMMA) plates generally used for the in vitro testing of sunscreens have failed to yield a satisfactory correlation between the sun protection factor (SPF) in vitro and that in vivo. In the present study, various polymers were investigated as alternative substrates to PMMA plates. PROCEDURES: In total, 14 polymers were tested in terms of ultraviolet (UV) transparency by transmission spectroscopy, and surface properties by contact angle measurement...
May 24, 2017: Skin Pharmacology and Physiology
https://www.readbyqxmd.com/read/28533002/the-radial-aspect-of-the-distal-radial-metaphysis-diaphysis-as-a-source-of-cortical-bone-graft
#2
REVIEW
Steven Regal, Aakash Chauhan, Peter Tang
Cortical bone grafting is commonly required in the finger, hand, and carpus when managing bony trauma. A donor site that can provide a small or large amount of cortical bone graft that is easily accessible and within the same surgical field would be the ideal donor site. In high-energy injuries, a long cortical graft may be needed to reconstruct massive bony defects. In low-energy injuries such as scaphoid nonunions in which a wedge graft is needed, a reliable and easily accessible source of bone grafting would be beneficial...
May 19, 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/28532093/electrophoretic-deposition-of-organic-inorganic-composite-coatings-containing-zno-nanoparticles-exhibiting-antibacterial-properties
#3
Joanna Karbowniczek, Luis Cordero-Arias, Sannakaisa Virtanen, Superb K Misra, Eugenia Valsami-Jones, Lorena Tuchscherr, Bogdan Rutkowski, Kamil Górecki, Piotr Bała, Aleksandra Czyrska-Filemonowicz, Aldo R Boccaccini
To address one of the serious problems associated with permanent implants, namely bacterial infections, novel organic/inorganic coatings containing zinc oxide nanoparticles (nZnO) are proposed. Coatings were obtained by electrophoretic deposition (EPD) on stainless steel 316L. Different deposition conditions namely: deposition times in the range 60-300s and applied voltage in the range 5-30V as well as developing a layered coating approach were studied. Antibacterial tests against gram-positive Staphylococcus aureus and gram-negative Salmonella enteric bacteria confirmed the activity of nZnO to prevent bacterial growth...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28531791/an-innovative-brioche-enriched-in-protein-and-energy-improves-the-nutritional-status-of-malnourished-nursing-home-residents-compared-to-oral-nutritional-supplement-and-usual-breakfast-farine-project
#4
Virginie Van Wymelbeke, Laurent Brondel, Francis Bon, Isabelle Martin-Pfitzenmeyer, Patrick Manckoundia
BACKGROUND & AIMS: To compare the effects of a 12-week nutritional intervention, in which an innovative protein-and-energy-enriched brioche, an oral nutritional supplement or a usual breakfast were eaten, on food intake and nutritional status in nursing home residents. DESIGN: Three-armed, multicentre, controlled trial. SETTING: Eight nursing homes in Burgundy, France. PARTICIPANTS: Sixty-eight malnourished participants aged between 70 and 99 years old...
October 2016: Clinical Nutrition ESPEN
https://www.readbyqxmd.com/read/28531450/estimating-energy-expenditure-in-vascular-surgery-patients-are-predictive-equations-accurate-enough
#5
J Suen, J M Thomas, C L Delaney, J I Spark, M D Miller
BACKGROUND & AIMS: Malnutrition is prevalent in vascular surgical patients who commonly seek tertiary care at advanced stages of disease. Adjunct nutrition support is therefore pertinent to optimise patient outcomes. To negate consequences related to excessive or suboptimal dietary energy intake, it is essential to accurately determine energy expenditure and subsequent requirements. This study aims to compare resting energy expenditure (REE) measured by indirect calorimetry, a commonly used comparator, to REE estimated by predictive equations (Schofield, Harris-Benedict equations and Miller equation) to determine the most suitable equation for vascular surgery patients...
December 2016: Clinical Nutrition ESPEN
https://www.readbyqxmd.com/read/28531309/effect-of-antiretroviral-therapy-on-bone-and-renal-health-in-young-adults-infected-with-hiv-in-early-life
#6
Aylin B Unsal, Aviva S Mattingly, Sara E Jones, Julia B Purdy, James C Reynolds, Jeffrey B Kopp, Rohan Hazra, Colleen M Hadigan
Context: HIV antiretroviral (ARV) therapy is associated with renal and bone toxicity, but little is known about the potential cumulative effects in adults exposed to ARVs from birth. Objective: To prospectively evaluate renal and bone health in young adults with lifelong HIV and extensive ARV exposure. Design: Cross-sectional comparison of bone mineral density (BMD by dual-energy X-ray absorptiometry), bone turnover and renal function in young adults infected with HIV in early life (n=65) to matched healthy controls (n=23) and longitudinal evaluation (mean follow-up 4...
May 22, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28531219/pyldm-an-open-source-package-for-lifetime-density-analysis-of-time-resolved-spectroscopic-data
#7
Gabriel F Dorlhiac, Clyde Fare, Jasper J van Thor
Ultrafast spectroscopy offers temporal resolution for probing processes in the femto- and picosecond regimes. This has allowed for investigation of energy and charge transfer in numerous photoactive compounds and complexes. However, analysis of the resultant data can be complicated, particularly in more complex biological systems, such as photosystems. Historically, the dual approach of global analysis and target modelling has been used to elucidate kinetic descriptions of the system, and the identity of transient species respectively...
May 22, 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/28530796/what-do-laser-induced-transient-techniques-reveal-for-batteries-na-and-k-intercalation-from-aqueous-electrolytes-as-an-example
#8
Daniel Scieszka, Jeongsik Yun, Aliaksandr S Bandarenka
Technological advancement has been revolutionized by rechargeable batteries, without which the use of various modern devices would not be possible. Aqueous Na-ion batteries have lately garnered much attention, being rec-ognized as a promising alternative to the commonly used Li-ion batteries for the large-scale energy storage systems. However, further improvement and optimization of such systems require a more detailed understanding of intercalation mechanisms. In this work, we for the first time demonstrate implementation of the laser induced current transient (LICT) technique for in-situ characterization of battery systems and investigate the interface between Na2Ni[Fe(CN)6] model battery electrodes in contact with aqueous electrolytes...
May 22, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28530405/novel-carrier-doping-mechanism-for-transparent-conductor-electron-donation-from-embedded-ag-nanoparticles-to-the-oxide-matrix
#9
Po-Shun Huang, Fen Qin, Ziye Xiong, Hyunwoo Shim, Tongchuan Gao, Paul W Leu, Jung-Kun Lee
A tradeoff between the carrier concentration and the carrier mobility is an inherent problem of traditional transparent conducting oxide (TCO) films. In this study, we demonstrate that the electron concentration of TCO film can be increased without deteriorating the carrier mobility by embedding Ag nanoparticles (NPs) into Al-doped ZnO (AZO) films. An increment of Ag NP content up to 0.7 vol% in the AZO causes the electron concentration rising from 2 × 1019 to 4 × 1020 cm-3. A dependence of the conductivity on temperature suggests that the thermal activation energy of this electron donation from Ag NPs is similar to the Schottky barrier height at the Ag-AZO interface that is a difference between work function of Ag and electron affinity of the AZO...
May 22, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28527803/using-brown-midrib-6-dwarf-forage-sorghum-silage-and-fall-grown-oat-silage-in-lactating-dairy-cow-rations
#10
M T Harper, J Oh, F Giallongo, J C Lopes, G W Roth, A N Hristov
Double cropping and increasing crop diversity could improve dairy farm economic and environmental sustainability. In this experiment, corn silage was partially replaced with 2 alternative forages, brown midrib-6 brachytic dwarf forage sorghum (Sorghum bicolor) or fall-grown oat (Avena sativa) silage, in the diet of lactating dairy cows. We investigated the effect on dry matter (DM) intake, milk yield (MY), milk components and fatty acid profile, apparent total-tract nutrient digestibility, N utilization, enteric methane emissions, and income over feed cost...
May 17, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28527509/impact-of-qi-invigorating-traditional-chinese-medicines-on-intestinal-flora-a-basis-for-rational-choice-of-prebiotics
#11
REVIEW
Xiao-Meng Wang, Xiao-Bo Li, Ying Peng
According to the theory of traditional Chinese medicine (TCM), Qi (vital energy) is regarded as a driving force of biological activities in human body, including both nutrient substances and organ functions. Qi-invigorating TCMs are widely used to treat various symptoms and disorders, such as fatigue, obesity, immunosuppression, intestinal flora imbalance, and gastrointestinal diseases, in which Qi is considered to be reduced or depleted. Interestingly, abundant clinical evidences suggest that these disorders are associated with the alternation of intestinal flora, which directly affects disease status...
April 2017: Chinese Journal of Natural Medicines
https://www.readbyqxmd.com/read/28527448/estimating-thermodynamic-expectations-and-free-energies-in-expanded-ensemble-simulations-systematic-variance-reduction-through-conditioning
#12
Manuel Athènes, Pierre Terrier
Markov chain Monte Carlo methods are primarily used for sampling from a given probability distribution and estimating multi-dimensional integrals based on the information contained in the generated samples. Whenever it is possible, more accurate estimates are obtained by combining Monte Carlo integration and integration by numerical quadrature along particular coordinates. We show that this variance reduction technique, referred to as conditioning in probability theory, can be advantageously implemented in expanded ensemble simulations...
May 21, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28527441/an-assessment-of-low-lying-excitation-energies-and-triplet-instabilities-of-organic-molecules-with-an-ab-initio-bethe-salpeter-equation-approach-and-the-tamm-dancoff-approximation
#13
Tonatiuh Rangel, Samia M Hamed, Fabien Bruneval, Jeffrey B Neaton
The accurate prediction of singlet and triplet excitation energies is an area of intense research of significant fundamental interest and critical for many applications. Most calculations of singlet and triplet energies use time-dependent density functional theory (TDDFT) in conjunction with an approximate exchange-correlation functional. In this work, we examine and critically assess an alternative method for predicting low-lying neutral excitations with similar computational cost, the ab initio Bethe-Salpeter equation (BSE) approach, and compare results against high-accuracy wavefunction-based methods...
May 21, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28527378/life-cycle-assessment-of-superheated-steam-drying-technology-as-a-novel-cow-manure-management-method
#14
Mohammadmatin Hanifzadeh, Zahra Nabati, Pairote Longka, Pomthong Malakul, Defne Apul, Dong-Shik Kim
Common methods of managing dairy manure are directly applying it to the farm field as a fertilizer. For direct application without any type of treatment, the majority of nutrients in the manure run off to the local river and lake during precipitation periods. The algae bloom is one of the environmental outcomes due to eutrophication of the lakes, which may jeopardize the quality of drinking water. In this study, superheated steam drying (SSD) technology is investigated as an alternative manure management method...
May 17, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28525437/feasibility-and-parental-acceptability-of-an-8-week-slow-speed-high-intensity-community-based-resistance-training-program-for-preadolescent-children
#15
Sarah L Mullane, Vincent B Bocchicchio, Noe C Crespo
High-intensity resistance training (RT) shows promise for improved cardiometabolic health in children. Achieving high-intensity RT safely is a challenge for community-based programs because of parental concerns and group engagement. Twenty preadolescent children completed an 8-week, twice per week program using slow speed to achieve high-intensity RT. Parent and child surveys were conducted to measure acceptability and effectiveness. Child fitness levels were assessed, and fasting blood draws and dual-energy x-ray absorptiometry were performed on a subset population...
July 2017: Family & Community Health
https://www.readbyqxmd.com/read/28525347/sustainable-farming-of-the-mealworm-tenebrio-molitor-for-the-production-of-food-and-feed
#16
Thorben Grau, Andreas Vilcinskas, Gerrit Joop
The farming of edible insects is an alternative strategy for the production of protein-rich food and feed with a low ecological footprint. The industrial production of insect-derived protein is more cost-effective and energy-efficient than livestock farming or aquaculture. The mealworm Tenebrio molitor is economically among the most important species used for the large-scale conversion of plant biomass into protein. Here, we review the mass rearing of this species and its conversion into food and feed, focusing on challenges such as the contamination of food/feed products with bacteria from the insect gut and the risk of rapidly spreading pathogens and parasites...
May 17, 2017: Zeitschrift Für Naturforschung. C, A Journal of Biosciences
https://www.readbyqxmd.com/read/28525274/metal-nanoparticle-catalyzed-hydrogen-generation-from-formic-acid
#17
Zhangpeng Li, Qiang Xu
To meet the ever-increasing energy demand, the development of effective, renewable, and environmentally friendly sources of alternative energy is imperative. Hydrogen (H2) is a renewable, clean energy carrier, which exhibits a threefold energy density compared to gasoline; H2 is considered one of the most promising alternative energy carriers for enabling a secure, clean energy future. However, the realization of a hydrogen economy is restricted by several unresolved issues. Particularly, one of the most difficult challenges is the development of a safe, efficient hydrogen storage and delivery system...
May 19, 2017: Accounts of Chemical Research
https://www.readbyqxmd.com/read/28521956/comparative-life-cycle-assessment-of-alternative-strategies-for-energy-recovery-from-used-cooking-oil
#18
Lidia Lombardi, Barbara Mendecka, Ennio Carnevale
The separate collection of Used Cooking Oil (UCO) is gaining popularity through several countries in Europe. An appropriate management of UCO waste stream leads to substantial benefits. In this study, we analyse two different possibilities of UCO energy reuse: the direct feed to a reciprocating internal combustion engine (ICE) for cogeneration purpose, and the processing to generate biodiesel. Concerning biodiesel production, we analyse four among conventional and innovative technologies, characterised by different type and amount of used chemicals, heat and electricity consumptions and yields...
May 15, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28521334/lifestyle-recommendations-for-the-prevention-and-management-of-metabolic-syndrome-an-international-panel-recommendation
#19
Pablo Pérez-Martínez, Dimitri P Mikhailidis, Vasilios G Athyros, Mónica Bullo, Patrick Couture, María I Covas, Lawrence de Koning, Javier Delgado-Lista, Andrés Díaz-López, Christian A Drevon, Ramón Estruch, Katherine Esposito, Montserrat Fitó, Marta Garaulet, Dario Giugliano, Antonio García-Ríos, Niki Katsiki, Genovefa Kolovou, Benoît Lamarche, Maria Ida Maiorino, Guillermo Mena-Sánchez, Araceli Muñoz-Garach, Dragana Nikolic, José M Ordovás, Francisco Pérez-Jiménez, Manfredi Rizzo, Jordi Salas-Salvadó, Helmut Schröder, Francisco J Tinahones, Rafael de la Torre, Ben van Ommen, Suzan Wopereis, Emilio Ros, José López-Miranda
The importance of metabolic syndrome (MetS) lies in its associated risk of cardiovascular disease and type 2 diabetes, as well as other harmful conditions such as nonalcoholic fatty liver disease. In this report, the available scientific evidence on the associations between lifestyle changes and MetS and its components is reviewed to derive recommendations for MetS prevention and management. Weight loss through an energy-restricted diet together with increased energy expenditure through physical activity contribute to the prevention and treatment of MetS...
May 1, 2017: Nutrition Reviews
https://www.readbyqxmd.com/read/28520407/controlling-configurational-isomerism-in-three-component-colloidal-hybrid-nanoparticles
#20
James M Hodges, Raymond E Schaak
Colloidal hybrid nanoparticles are solution-dispersible constructs that join together multiple distinct nanoscale materials through direct solid-solid interfaces. Given their multifunctionality and synergistic properties that emerge from interfacial coupling, hybrid nanoparticles are of interest for applications in biomedical imaging, solar energy conversion, heterogeneous catalysis, nanophotonics, and beyond. High-order hybrid nanoparticles, which incorporate three or more nanocrystal domains, offer greater tunability and functional diversity relative to one or two-component nanoparticles...
May 18, 2017: Accounts of Chemical Research
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