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Ekaterina N Lazareva, Valery V Tuchin
This study is focused on the measurements of the refractive index of hemoglobin solutions in the visible/near-infrared (NIR) spectral range at room temperature for characteristic laser wavelengths: 480, 486, 546, 589, 644, 656, 680, 930, 1100, 1300, and 1550 nm. Measurements were performed using the multiwavelength Abbe refractometer. Aqua hemoglobin solutions of different concentrations obtained from human whole blood were investigated. The specific increment of refractive index on hemoglobin concentration and the Sellmeier coefficients were calculated...
March 2018: Journal of Biomedical Optics
Stéphane Faucher, Samantha Soulé, Anne-Laure Bulteau, Joachim Allouche, Gaëtane Lespes
A method to determine total gold (Au) and/or silver (Ag) elemental concentrations from gold nanoparticles, Au-Ag nanoshells (NS) and silica coated Au-Ag nanoshells was developed, evaluated and validated. Samples were mineralized in a mixture of concentrated aqua regia and hydrofluoric acid at 65 °C for 4 h. Mineralized solutions were diluted and standard solutions were prepared in aqua regia 5%. ICP-MS analysis was performed with or without the use of a reaction cell (CRC). For the determination of elemental concentrations of nanopowders and test suspensions, the average recovery was 99 ± 2% and 101 ± 2% for gold and silver respectively...
May 2018: Journal of Trace Elements in Medicine and Biology
Alejandro M Labella, M Dolores Castro, Manuel Manchado, Juan J Borrego
Phylogenetic relationships between species in the genus Photobacterium have been poorly studied despite pathogenic and ecological relevance of some of its members. This is the first phylogenetic study that includes new species of Photobacterium (validated or not) that have not been included in any of the previously described clades, using 16S rRNA sequences and multilocus sequence analysis (MLSA) in concatenated sequences of gyrB , gapA , topA , ftsZ and mreB housekeeping genes. Sequence analysis has been implemented using Maximum-parsimony (MP), Neighbour-joining (NJ) and Maximum likelihood (ML) treeing methods and the predicted evolutionary relationship between the Photobacterium clades was established on the basis of bootstrap values of >75% for 16S rRNA sequences and MLSA...
March 12, 2018: Microorganisms
Brandon Michael Henry, Jens Vikse, Przemyslaw Pekala, Marios Loukas, R Shane Tubbs, Jerzy A Walocha, D Gareth Jones, Krzysztof A Tomaszewski
Unambiguous reporting of a study's compliance with ethical guidelines in anatomical research is imperative. As such, clear, universal, and uniform reporting guidelines for study ethics are essential. In 2016, the International Evidence-Based Anatomy Working group in collaboration with international partners established reporting guidelines for anatomical studies, the Anatomical Quality Assurance (AQUA) Checklist. In this elaboration of the AQUA Checklist, consensus guidelines for reporting study ethics in anatomical studies are provided with in the framework of the AQUA Checklist...
March 13, 2018: Clinical Anatomy
Christien P Laber, Jonathan E Hunter, Filipa Carvalho, James R Collins, Elias J Hunter, Brittany M Schieler, Emmanuel Boss, Kuldeep More, Miguel Frada, Kimberlee Thamatrakoln, Christopher M Brown, Liti Haramaty, Justin Ossolinski, Helen Fredricks, Jozef I Nissimov, Rebecca Vandzura, Uri Sheyn, Yoav Lehahn, Robert J Chant, Ana M Martins, Marco J L Coolen, Assaf Vardi, Giacomo R DiTullio, Benjamin A S Van Mooy, Kay D Bidle
Marine phytoplankton account for approximately half of global primary productivity1 , making their fate an important driver of the marine carbon cycle. Viruses are thought to recycle more than one-quarter of oceanic photosynthetically fixed organic carbon2 , which can stimulate nutrient regeneration, primary production and upper ocean respiration2 via lytic infection and the 'virus shunt'. Ultimately, this limits the trophic transfer of carbon and energy to both higher food webs and the deep ocean2 . Using imagery taken by the Moderate Resolution Imaging Spectroradiometer (MODIS) onboard the Aqua satellite, along with a suite of diagnostic lipid- and gene-based molecular biomarkers, in situ optical sensors and sediment traps, we show that Coccolithovirus infections of mesoscale (~100 km) Emiliania huxleyi blooms in the North Atlantic are coupled with particle aggregation, high zooplankton grazing and greater downward vertical fluxes of both particulate organic and particulate inorganic carbon from the upper mixed layer...
March 12, 2018: Nature Microbiology
Grant Matthews
A need to gain more confidence in computer model predictions of coming climate change has resulted in greater analysis of the quality of orbital Earth radiation budget (ERB) measurements being used today to constrain, validate, and hence improve such simulations. These studies conclude from time series analysis that for around a quarter of a century, no existing satellite ERB climate data record is of a sufficient standard to partition changes to the Earth from those of un-tracked and changing artificial instrumentation effects...
March 1, 2018: Applied Optics
Stefan Schaub, Andreas Miska, Jonathan Becker, Stefan Zahn, Doreen Mollenhauer, Sakshath Sadashivaiah, Volker Schünemann, Siegfried Schindler
The iron(IV) oxido complex [(tmc)Fe=O(OTf)]OTf with the macrocyclic ligand 1,4,8,11-tetramethyl-1,4,8,11-tetraazacyclo-tetradecane (tmc) has been synthesized using ozone as an oxidant. By adding water to this compound the complex [(H2O)(tmc)Fe=O)](OTf)2 could be prepared. This complex is important in regard to a better understanding of the reactivity of Fe(IV) oxido complexes. Mössbauer measurements using the solid compound showed an isomer shift of = 0.19 mms-1 and a quadrupole splitting EQ = 1.38 mms-1 confirming the high valent Fe(IV) state...
March 9, 2018: Angewandte Chemie
Keonhee Kim, Chaehong Park, Youngdae Yoon, Soon-Jin Hwang
Cyanobacteria synthesize various harmful materials, including off-flavor substances and toxins, that are regarded as potential socio-economic and environmental hazards in freshwater systems, however, their production is still not well understood. In this study, we investigated the potential and properties of harmful materials produced by cyanobacteria, depending on temperature, and undertook a phylogenetic analysis of cyanobacteria present in the North Han River (South Korea). Production potentials were evaluated using gene-specific probes, and the harmful material production properties of strains showing positive potentials were further characterized at different temperatures in the range 15 to 30 °C...
March 3, 2018: International Journal of Environmental Research and Public Health
Simona Rimoldi, Genciana Terova, Chiara Ascione, Riccardo Giannico, Fabio Brambilla
Animal by-product meals from the rendering industry could provide a sustainable and commercially viable alternative to fishmeal (FM) in aquaculture, as they are rich in most essential amino acids and contain important amounts of water-soluble proteins that improve feed digestibility and palatability. Among them, poultry by-product meal (PBM) have given encouraging results in rainbow trout (Oncorhynchus mykiss). However, the introduction of new ingredients in the diet needs to be carefully evaluated since diet is one of the main factors affecting the gut microbiota, which is a complex community that contributes to host metabolism, nutrition, growth, and disease resistance...
2018: PloS One
Holger Eggebrecht, Kurt Bestehorn, Tienush Rassaf, Maike Bestehorn, Thomas Voigtländer, Eckhard Fleck, Volker Schächinger, Axel Schmermund, Rajendra H Mehta
AIMS: Randomised trials comparing transcatheter aortic valve replacement (TAVR) with surgical aortic valve replacement (SAVR) have included mainly elderly patients >80 years. The authors investigated comparative in-hospital outcomes of younger patients <75 years undergoing transfemoral (TF) TAVR or isolated SAVR. METHODS AND RESULTS: A total of 6,972 patients aged 65-74 years undergoing TF-TAVR or SAVR between 2013 and 2014 were identified from the observational German Quality Assurance Registry on Aortic Valve Replacement (AQUA), which comprises all TAVR and SAVR procedures performed in Germany...
February 27, 2018: EuroIntervention
Xiang Wu, Hao Wu, Saijun Wang, Yimian Wang, Rongfei Zhang, Xiaobin Hu, Jinyun Ye
Reducing the formation and growth of Microcystis colonies is an important prerequisite for the effective prevention and treatment of cyanobacterial blooms. Microcystis flos-aquae colonies was selected to investigate the potential of propionamide for use in controlling cyanobacterial blooms. Propionamide, one of the major allelochemicals in the root exudates of E. crassipes, was tested using different concentrations (0, 0.2, 1, and 2mgL-1 ) and dosing methods (one-time addition, semi-continuous addition, and continuous addition) to assess its effect on the growth of M...
February 24, 2018: Science of the Total Environment
Tatiana Odinets, Yuriy Briskin, Maryan Pityn
PURPOSE: The purpose of this study was to determine the effectiveness of an individualized physical rehabilitation programs aimed at improving respiratory function in women with post-mastectomy syndrome. METHODS: In a randomized controlled trial 50 women with post-mastectomy syndrome were enrolled in the experimental group (EG, n = 25) or the comparison group (CG, n = 25). The program for the EG included: aqua aerobics (i.e. aqua jogging, aqua building, and aqua stretching); conditional swimming; and recreational aerobics...
February 26, 2018: Physiotherapy Theory and Practice
Sakineh Mashjoor, Morteza Yousefzadi, Hossein Zolgharnain, Ehsan Kamrani, Mojtaba Alishahi
Following the recent progress in magnetic nanotechnology, concern over the optimal benefits and potential risks of iron oxide nanoparticles (Fe NPs), has increased. Hence, to minimize the negative impacts of inorganic Fe NPs, we report the phyco-synthesis and characterization of superparamagnetic Fe3 O4 NPs via reduction of ferric/ferrous chloride solution (2:1 M ratio; 88 °C) with green macroalga, Ulva flexuosa (wulfen) J.Agardh aqueous extract. The biogenic process is clean, eco-friendly, rapid, and facile to handle...
February 20, 2018: Environmental Pollution
Kirsten H Herrmann, Ulf Meier-Kriesche, Aljoscha S Neubauer
Introduction: It is discussed whether real world data can be used in health technology assessment. Following it is of interest whether routinely collected data for quality assurance (QA) in the hospital sector is feasible to address epidemiologic questions in kidney transplantation in the AMNOG process in Germany. Objectives: To investigate the proportion of kidney transplants classified as from so-called standard criteria donors (SCD) and from expanded criteria donors (ECD) in Germany and to study the age distribution...
2018: German Medical Science: GMS E-journal
F T Baumann, A Reike, V Reimer, M Schumann, M Hallek, D R Taaffe, R U Newton, D A Galvao
PURPOSE: The aim of this systematic review is to assess the effect of different types of exercise on breast cancer-related lymphedema (BCRL) in order to elucidate the role of exercise in this patient group. METHODS: A systematic data search was performed using PubMed (December 2016). The review is focused on the rehabilitative aspect of BCRL and undertaken according to the PRISMA statement with Levels of Evidence (LoE) assessed. RESULTS: 11 randomized controlled trials (9 with LoE 1a and 2 with LoE 1b) that included 458 women with breast cancer in aftercare were included...
February 22, 2018: Breast Cancer Research and Treatment
Fulvio Capodici, Giuseppe Ciraolo, Simone Cosoli, Antonino Maltese, M Cristina Mangano, Gianluca Sarà
Chlorophyll-a (CHL-a) and sea surface temperature (SST) are generally accepted as proxies for water quality. They can be easily retrieved in a quasi-near real time mode through satellite remote sensing and, as such, they provide an overview of the water quality on a synoptic scale in open waters. Their distributions evolve in space and time in response to local and remote forcing, such as winds and currents, which however have much finer temporal and spatial scales than those resolvable by satellites in spite of recent advances in satellite remote-sensing techniques...
February 15, 2018: Science of the Total Environment
Decheng Zhou, Stefania Bonafoni, Liangxia Zhang, Ranghui Wang
Increasingly urban agglomeration, representing a group of cities with a compact spatial organization and close economic links, can rise surface temperature in a continuous area due to decreasing distance between cities. Significant progress has been made in elucidating surface urban heat island intensity (SUHII) of a single city or a few big cities, but the SUHII's patterns remain poorly understood in urban agglomeration regions. Using Aqua/Terra MODIS data over 2010-2015, we examined the SUHII variations and their drivers in Yangtze River Delta Urban Agglomeration (YRDUA) of east China...
February 12, 2018: Science of the Total Environment
Thomas David, Jean-Noël Aqua, Kailang Liu, Luc Favre, Antoine Ronda, Marco Abbarchi, Jean-Benoit Claude, Isabelle Berbezier
Strain engineering is seen as a cost-effective way to improve the properties of electronic devices. However, this technique is limited by the development of the Asarro Tiller Grinfeld growth instability and nucleation of dislocations. Two strain engineering processes have been developed, fabrication of stretchable nanomembranes by deposition of SiGe on a sacrificial compliant substrate and use of lateral stressors to strain SiGe on Silicon On Insulator. Here, we investigate the influence of substrate softness and pre-strain on growth instability and nucleation of dislocations...
February 13, 2018: Scientific Reports
François P Rotzinger
The water exchange reaction of the neptunyl(VI) and -(V) aqua ions was investigated with quantum chemical methods. Associative (a) and dissociative (d) exchange mechanisms were studied. The geometries and vibrational frequencies were computed with density functional theory (DFT) and multiconfiguration self-consistent field (MCSCF) methods. The Gibbs activation energies (ΔG‡) for a and d pathways were calculated with DFT and wave function theory (WFT), extended general multiconfiguration quasi-degenerate second-order perturbation theory (XGMC-QDPT2) including spin-orbit (SO) coupling at the SO configuration interaction (CI) level...
February 12, 2018: Inorganic Chemistry
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