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https://www.readbyqxmd.com/read/28228019/equation-of-state-and-shock-compression-of-warm-dense-sodium-a-first-principles-study
#1
Shuai Zhang, Kevin P Driver, François Soubiran, Burkhard Militzer
As one of the simple alkali metals, sodium has been of fundamental interest for shock physics experiments, but knowledge of its equation of state (EOS) in hot, dense regimes is not well known. By combining path integral Monte Carlo (PIMC) results for partially ionized states [B. Militzer and K. P. Driver, Phys. Rev. Lett. 115, 176403 (2015)] at high temperatures and density functional theory molecular dynamics (DFT-MD) results at lower temperatures, we have constructed a coherent equation of state for sodium over a wide density-temperature range of 1...
February 21, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28225526/nonhuman-primate-model-of-polytraumatic-hemorrhagic-shock-recapitulates-early-platelet-dysfunction-observed-following-severe-injury-in-humans
#2
Leasha J Schaub, Hunter B Moore, Andrew P Cap, Jacob J Glaser, Ernest E Moore, Forest R Sheppard
BACKGROUND: Platelet dysfunction has been described as an early component of trauma-induced coagulopathy. The platelet component of trauma-induced coagulopathy remains to be fully elucidated and translatable animal models are required to facilitate mechanistic investigations. We sought to determine if the early platelet dysfunction described in trauma patients could be recapitulated in a nonhuman primate model of polytraumatic hemorrhagic shock. METHODS: Twenty-four male rhesus macaques weighting 7 to 14 kg were subjected to 60 minutes (min) of severe pressure-targeted controlled hemorrhagic shock (HS) with and without other injuries...
March 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28222179/seed-and-peel-essential-oils-obtained-from-campomanesia-adamantium-fruit-inhibit-inflammatory-and-pain-parameters-in-rodents
#3
Danieli Zuntini Viscardi, Jucicléia da Silva Arrigo, Camila de Azevedo Chaves Correia, Cândida Aparecida Leite Kassuya, Claudia Andrea Lima Cardoso, Iriani Rodrigues Maldonade, Eliana Janet Sanjinez Argandoña
Campomanesia adamantium (Myrtaceae) is popularly known as "gabiroba" and has been used in folk medicine as antirheumatic, antidiarrheal, hypocholesterolemic and anti-inflammatory. This study evaluated the anti-inflammatory and antinociceptive activities and toxicology of essential oils from peel (EOP) and seed (EOS) of C. adamantium fruits in animal models. Different groups were treated with doses of 100 and 300 mg/kg and the inflammatory parameters were evaluated in carrageenan induced paw oedema and leukocyte migration in pleurisy model, while antinociceptive activity was evaluated using formalin method in rodents...
2017: PloS One
https://www.readbyqxmd.com/read/28213539/critical-concentration-of-lecithin-enhances-the-antimicrobial-activity-of-eugenol-against-escherichia-coli
#4
Haoshu Zhang, Edward G Dudley, P Michael Davidson, Federico Harte
Lecithin is a natural emulsifier used in a wide range of food and non-food applications to improve physical stability with no known bioactive effects. In this study, the effect of lecithin on the antimicrobial performance of a constant eugenol concentration was tested against three Escherichia coli strains (C600, 0.1229, and O157:H7 strain ATCC 700728). This was the first study focusing on lecithin at concentrations below those commonly used in foods to improve the stability of oil in water emulsions (≤ 10mg/100ml)...
February 17, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28193253/artemisia-spp-essential-oils-against-the-disease-carrying-blowfly-calliphora-vomitoria
#5
Stefano Bedini, Guido Flamini, Francesca Cosci, Roberta Ascrizzi, Maria Cristina Echeverria, Lucia Guidi, Marco Landi, Andrea Lucchi, Barbara Conti
BACKGROUND: Synanthropic flies play a considerable role in the transmission of pathogenic and non-pathogenic microorganisms. In this work, the essential oil (EO) of two aromatic plants, Artemisia annua and Artemisia dracunculus, were evaluated for their abilities to control the blowfly Calliphora vomitoria. Artemisia annua and A. dracunculus EOs were extracted, analysed and tested in laboratory bioassays. Besides, the physiology of EOs toxicity and the EOs antibacterial and antifungal properties were evaluated...
February 13, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28190677/bornyl-diphosphate-synthase-from-lavandula-angustifolia-a-major-monoterpene-synthase-involved-in-essential-oil-quality
#6
Yolande Despinasse, Sébastien Fiorucci, Serge Antonczak, Sandrine Moja, Aurélie Bony, Florence Nicolè, Sylvie Baudino, Jean-Louis Magnard, Frédéric Jullien
Lavender essential oils (EOs) of higher quality are produced by a few Lavandula angustifolia cultivars and mainly used in the perfume industry. Undesirable compounds such as camphor and borneol are also synthesized by lavender leading to a depreciated EO. Here, we report the cloning of bornyl diphosphate synthase of lavender (LaBPPS), an enzyme that catalyzes the production of bornyl diphosphate (BPP) and then by-products such as borneol or camphor, from an EST library. Compared to the BPPS of Salvia officinalis, the functional characterization of LaBPPS showed several differences in amino acid sequence, and the distribution of catalyzed products...
February 9, 2017: Phytochemistry
https://www.readbyqxmd.com/read/28187504/extreme-spermatogenesis-failure-andrological-phenotype-and-intracytoplasmic-sperm-injection-outcomes
#7
P Plouvier, A-L Barbotin, F Boitrelle, D Dewailly, V Mitchell, J-M Rigot, V Lefebvre-Khalil, G Robin
Patients with very low sperm count through direct sperm examination can exhibit extreme oligozoospermia or cryptozoospermia (after centrifugation). The management of these patients is a real challenge for both clinicians and biologists. In this retrospective and comparative cohort study, we compared the andrological phenotype of patients with extreme alterations of spermatogenesis and assessed whether the origin of spermatozoa (testicular or ejaculate) had any influence on intracytoplasmic sperm injection (ICSI) outcomes...
February 10, 2017: Andrology
https://www.readbyqxmd.com/read/28187059/clinical-and-microbiologic-characteristics-of-early-onset-sepsis-among-vlbw-infants-opportunities-for-antibiotic-stewardship
#8
Sagori Mukhopadhyay, Karen M Puopolo
BACKGROUND: Most very-low birth weight (birth weight <1500 grams, VLBW) infants receive empiric antibiotics for risk of early-onset sepsis (EOS). The objective of this study was to determine the characteristics of VLBW infants with culture-confirmed EOS at a single center during 25 years, to identify opportunities for antibiotic stewardship. METHODS: Retrospective cohort study including VLBW infants admitted from 1990-2015. EOS was defined as isolation of a pathogen in blood or cerebrospinal fluid culture obtained < 72 hours of age...
February 9, 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28185379/feed-degradability-rumen-fermentation-and-blood-metabolites-in-response-to-essential-oil-addition-to-fistulated-non-lactating-dairy-cow-diets
#9
Wisitiporn Suksombat, Atitthan Nanon, Chayapol Meeprom, Pipat Lounglawan
The effects of essential oils (EOs) on ruminal nutrient disappearance, rumen fermentation and blood metabolites in fistulated non-lactating dairy cows were studied. Four fistulated non-lactaing dairy cows were used in a 4 × 4 Latin square design; the experiment consisted of four periods of 21 days in each period, with the first 14 days for adaptation followed by 7 days of measurement period. Animals were fed 3 kg/day of 21% crude protein (CP) concentrate and ad libitum corn silage. Treatments were: (i) control; (ii) 2 mL Allicin/cow/day; (iii) 2 mL zingiberene/cow/day; and (iv) 2 mL citral/cow/day...
February 9, 2017: Animal Science Journal, Nihon Chikusan Gakkaihō
https://www.readbyqxmd.com/read/28179485/variation-in-sepsis-evaluation-across-a-national-network-of-nurseries
#10
Sagori Mukhopadhyay, James A Taylor, Isabelle Von Kohorn, Valerie Flaherman, Anthony E Burgos, Carrie A Phillipi, Nui Dhepyasuwan, Elizabeth King, Miren Dhudasia, Karen M Puopolo
BACKGROUND AND OBJECTIVES: The extent to which clinicians use currently available guidelines for early-onset sepsis (EOS) screening has not been described. The Better Outcomes through Research for Newborns network represents 97 nurseries in 34 states across the United States. The objective of this study was to describe EOS risk management strategies across a national sample of newborn nurseries. METHODS: A Web-based survey was sent to each Better Outcomes through Research for Newborns network nursery site representative...
February 8, 2017: Pediatrics
https://www.readbyqxmd.com/read/28178823/nonadditive-three-body-potential-and-third-to-eighth-virial-coefficients-of-carbon-dioxide
#11
Robert Hellmann
A new nonadditive three-body interaction potential for carbon dioxide was determined from supermolecular ab initio calculations up to the coupled cluster with single, double, and perturbative triple excitations [CCSD(T)] level of theory for 9401 configurations. A physically motivated analytical function with terms for describing nonadditive dispersion, induction, and exchange contributions was fitted to the calculated nonadditive three-body interaction energies. For the 7996 configurations with a total interaction energy of less than 3000 K, the mean absolute error of the analytical function is 0...
February 7, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28171692/inhibitory-activity-and-chemical-characterization-of-daucus-carota-subsp-maximus-essential-oils
#12
Raimondo Gaglio, Marcella Barbera, Aurora Aleo, Ines Lommatzsch, Tommaso La Mantia, Luca Settanni
The essential oils (EOs) of green seeds from Daucus carota subsp. maximus growing wild in Pantelleria island (Sicily, Italy) were characterised. EOs were extracted by steam distillation, examined for their inhibitory properties against food-borne Gram positive and Gram negative bacteria and analysed for the chemical composition by gas chromatography (GC) and mass spectrometry (MS). Undiluted EOs showed a large inhibition spectrum against Gram positive strains and also vs Acinetobacter spp. and Stenotrophomonas maltophilia...
February 7, 2017: Chemistry & Biodiversity
https://www.readbyqxmd.com/read/28165086/heat-of-capillary-condensation-in-nanopores-new-insights-from-the-equation-of-state
#13
Sugata P Tan, Mohammad Piri
Perturbed-Chain Statistical Associating Fluid Theory (PC-SAFT) coupled with the Young-Laplace equation is a recently developed equation of state (EOS) that successfully presents not only the capillary condensation but also the pore critical phenomena. The development of this new EOS allows further investigation of the heats involved in condensation. Compared to the conventional approaches, the EOS calculations present the temperature-dependent behavior of the heat of capillary condensation as well as that of the contributing effects...
February 6, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28164082/semiautomated-3d-spine-reconstruction-from-biplanar-radiographic-images-prediction-of-intervertebral-loading-in-scoliotic-subjects
#14
Tito Bassani, Claudia Ottardi, Francesco Costa, Marco Brayda-Bruno, Hans-Joachim Wilke, Fabio Galbusera
The present study proposes a semiautomatic software approach to reconstruct 3D subject-specific musculoskeletal model of thoracolumbar spine from radiographic digitized images acquired with EOS system. The approach is applied to evaluate the intervertebral loads in 38 standing adolescents with mild idiopathic scoliosis. For each vertebra, a set of landmarks was manually identified on radiographic images. The landmark coordinates were processed to calculate the following vertebral geometrical properties in the 3D space (i) location (ii) dimensions; and (iii) rotations...
2017: Frontiers in Bioengineering and Biotechnology
https://www.readbyqxmd.com/read/28158107/narrow-band-multi-filter-radiometer-for-total-ozone-content-measurements-mario-zucchelli-station-antarctica-campaign
#15
Salvatore Scaglione, Danilo Zola, Francesca Menchini, Ilaria Di Sarcina
The importance of ground-based measurements of ultraviolet radiation has increased since the discovery of the stratospheric ozone layer depletion. Spectroradiometers are the most widely used class of instruments, although the requirement to work in attended stations is sometimes limiting. In this work we present a filter radiometer, named F-RAD, with good optical stability, very short sampling time (1 min), and proven reliability. The instrument is based on a stand-alone functioning, making it suitable for operation in hostile environments...
February 1, 2017: Applied Optics
https://www.readbyqxmd.com/read/28154307/molecular-interaction-between-intercellular-lipids-in-the-stratum-corneum-and-l-menthol-as-analyzed-by-synchrotron-x-ray-diffraction
#16
Shinya Yoshida, Yasuko Obata, Yoshinori Onuki, Shunichi Utsumi, Noboru Ohta, Hiroshi Takahashi, Kozo Takayama
l-Menthol increases drug partitioning on the surface of skin, diffusion of drugs in the skin, and lipid fluidity in the stratum corneum and alters the rigidly arranged lipid structure of intercellular lipids. However, l-menthol is a solid at room temperature, and it is difficult to determine the effects of l-menthol alone. In this study, we vaporized l-menthol in order to avoid the effects of solvents. The vaporized l-menthol was applied to the stratum corneum or lipid models comprising composed of ceramides (CER) [EOS], the longest lipid acyl chain of the ceramides in the stratum corneum lipids that is associated with the barrier function of the skin; CER [NS], the shorter lipid acyl chain of the ceramides, and the most components in the stratum corneum of the intercellular lipids that is associated with water retention in the intercellular lipid structure of the stratum corneum; cholesterol; and palmitic acid...
2017: Chemical & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28152019/3d-modeling-of-the-spine-using-eos-imaging-system-inter-reader-reproducibility-and-reliability
#17
Johannes Rehm, Thomas Germann, Michael Akbar, Wojciech Pepke, Hans-Ulrich Kauczor, Marc-André Weber, Daniel Spira
OBJECTIVES: To retrospectively assess the interreader reproducibility and reliability of EOS 3D full spine reconstructions in patients with adolescent idiopathic scoliosis (AIS). METHODS: 73 patients with mean age of 17 years and a moderate AIS (median Cobb Angle 18.2°) obtained low-dose standing biplanar radiographs with EOS. Two independent readers performed "full spine" 3D reconstructions of the spine with the "full-spine" method adjusting the bone contour of every thoracic and lumbar vertebra (Th1-L5)...
2017: PloS One
https://www.readbyqxmd.com/read/28145647/relationship-between-fractional-exhaled-nitric-oxide-level-and-efficacy-of-inhaled-corticosteroid-in-asthma-copd-overlap-syndrome-patients-with-different-disease-severity
#18
Jia Xi Feng, Yun Lin, Jian Lin, Su Su He, Mei Fang Chen, Xiao Mai Wu, You Zu Xu
This study explored the relationship between the fractional exhaled nitric oxide (FeNO) level and the efficacy of inhaled corticosteroid (ICS) in asthma-chronic obstructive pulmonary disease (COPD) overlap syndrome (ACOS) patients with different disease severity. A total of 127 ACOS patients with ACOS (case group) and 131 healthy people (control group) were enrolled in this study. Based on the severity of COPD, the ACOS patients were divided into: mild ACOS; moderate ACOS; severe ACOS; and extremely severe ACOS groups...
March 2017: Journal of Korean Medical Science
https://www.readbyqxmd.com/read/28141685/veptr-implantation-to-treat-children-with-early-onset-scoliosis-without-rib-abnormalities-early-results-from-a-prospective-multicenter-study
#19
Ron El-Hawary, Muayad Kadhim, Michael Vitale, John Smith, Amer Samdani, John M Flynn
BACKGROUND: Thoracoplasty and insertion of vertical expandable prosthetic titanium rib (VEPTR) for thoracic and spine distraction has been found to be effective in the treatment of early-onset scoliosis (EOS) with ribs anomalies and congenital vertebral anomalies. The aim of this study was to evaluate the efficacy of VEPTR in preventing further progression of scoliosis without impeding spinal growth in children with progressive EOS without rib abnormalities. METHODS: This is a prospective, multicenter, observational cohort study...
January 30, 2017: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/28132900/influence-of-the-penetration-enhancer-isopropyl-myristate-on-stratum-corneum-lipid-model-membranes-revealed-by-neutron-diffraction-and-2-h-nmr-experiments
#20
Adina Eichner, Sören Stahlberg, Stefan Sonnenberger, Stefan Lange, Bodo Dobner, Andreas Ostermann, Tobias E Schrader, Thomas Hauß, Annett Schroeter, Daniel Huster, Reinhard H H Neubert
The stratum corneum (SC) provides the main barrier properties in native skin. The barrier function is attributed to the intercellular lipids, forming continuous multilamellar membranes. In this study, SC lipid membranes in model ratios were enriched with deuterated lipids in order to investigate structural and dynamical properties by neutron diffraction and (2)H solid-state NMR spectroscopy. Further, the effect of the penetration enhancer isopropyl myristate (IPM) on the structure of a well-known SC lipid model membrane containing synthetically derived methyl-branched ceramide [EOS], ceramide [AP], behenic acid and cholesterol (23/10/33/33wt%) was investigated...
January 26, 2017: Biochimica et Biophysica Acta
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