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https://www.readbyqxmd.com/read/29161642/microbial-diversity-of-consumption-milk-during-processing-and-storage
#1
Davide Porcellato, Marina Aspholm, Siv Borghild Skeie, Marte Monshaugen, Johanne Brendehaug, Hilde Mellegård
Bovine milk contains a complex microbial community that affects the quality and safety of the product. Detailed knowledge of this microbiota is, therefore, of importance for the dairy industry. In this study, the bacterial composition of consumption milk was assessed during different stages in the production line and throughout the storage in cartons by using culturing techniques and 16S rRNA marker gene sequencing. Monthly samples from two dairies were analyzed to capture the seasonal variations in the milk microbiota...
November 8, 2017: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/29161616/the-deceleration-of-a-spherical-projectile-passing-through-porcine-organs-at-laboratory-temperature-16%C3%A2-%C3%A2-c-and-core-body-temperature-37%C3%A2-%C3%A2-c
#2
Caitlin Humphrey, Maciej Henneberg, Christian Wachsberger, Jaliya Kumaratilake
No abstract text is available yet for this article.
November 18, 2017: Journal of Forensic and Legal Medicine
https://www.readbyqxmd.com/read/29161516/influence-of-grafted-block-copolymer-structure-on-thermoresponsiveness-of-superparamagnetic-core-shell-nanoparticles
#3
Steffen Kurzhals, Martina Schroffenegger, Noga Gal, Ronald Zirbs, Erik Reimhult
The morphology and topology of thermoresponsive polymers have strong impact on their responsive properties. Grafting onto spherical particles has been shown to reduce responsiveness and transition temperatures; grafting of block copolymers has shown that switchable or retained wettability of a surface or particle during desolvation of one block can take place. Here, doubly thermoresponsive block copolymers were grafted onto spherical, monodisperse and superparamagnetic iron oxide nanoparticles to investigate the effect of thermal desolvation on spherical brushes of block copolymers...
November 21, 2017: Biomacromolecules
https://www.readbyqxmd.com/read/29161019/local-enhancement-of-lipid-membrane-permeability-induced-by-irradiated-gold-nanoparticles
#4
Andrea Torchi, Federica Simonelli, Riccardo Ferrando, Giulia Rossi
Photothermal therapies are based on the optical excitation of plasmonic nanoparticles in the biological environment. The effects of the irradiation on the biological medium depend critically on the heat transfer process at the nanoparticle interface, on the temperature reached by the tissues as well as on the spatial extent of temperature gradients. Unfortunately, both the temperature and its biological effects are difficult to be probed experimentally at the molecular scale. Here, we approach this problem using non-equilibrium molecular dynamics simulations...
November 21, 2017: ACS Nano
https://www.readbyqxmd.com/read/29160075/electron-and-hole-g-factors-and-spin-dynamics-of-negatively-charged-excitons-in-cdse-cds-colloidal-nanoplatelets-with-thick-shells
#5
Elena V Shornikova, Louis Biadala, Dmitri R Yakovlev, Donghai Feng, Victor F Sapega, Nathan Flipo, Aleksandr A Golovatenko, Marina A Semina, Anna V Rodina, Anatolie Mitioglu, Mariana V Ballottin, Peter C M Christianen, Yuri G Kusrayev, Michel Nasilowski, Benoit Dubertret, Manfred Bayer
We address spin properties and spin dynamics of carriers and charged excitons in CdSe/CdS colloidal nanoplatelets with thick shells. Magneto-optical studies are performed by time-resolved and polarization-resolved photoluminescence, spin-flip Raman scattering and picosecond pump-probe Faraday rotation in magnetic fields up to 30 T. We show that at low temperatures the nanoplatelets are negatively charged so that their photoluminescence is dominated by radiative recombination of negatively charged excitons (trions)...
November 21, 2017: Nano Letters
https://www.readbyqxmd.com/read/29160070/cation-hydration-in-supercritical-naoh-and-hcl-aqueous-solutions
#6
Christoph J Sahle, Johannes Niskanen, Christian Schmidt, Johannes Stefanski, Keith Gilmore, Yury Forov, Sandro Jahn, Max Wilke, Christian Sternemann
We present a study of the local atomic environment of the oxygen atoms in aqueous solutions of NaOH and HCl under simultaneous high temperature and high pressure conditions. Experimental non-resonant X-ray Raman scattering core-level spectra at the oxygen K-edge show systematic changes as a function of temperature and pressure. These systematic changes are distinct for the two different solutes and are described well by calculations within the Bethe-Salpeter formalism for snapshots from {\it ab initio} molecular dynamics simulations...
November 21, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/29159586/extensive-hydrolysis-of-raw-rice-starch-by-a-chimeric-%C3%AE-amylase-engineered-with-%C3%AE-amylase-amyp-and-a-starch-binding-domain-from-cryptococcus-sp-s-2
#7
Hui Peng, Rui Li, Fengling Li, Lu Zhai, Xiaohan Zhang, Yazhong Xiao, Yi Gao
Recombinant chimeric α-amylase (AmyP-Cr) was constructed by a catalytic core of α-amylase (AmyP) from a marine metagenomic library and a starch-binding domain (SBDCr) of α-amylase from Cryptococcus sp. S-2. The molecular fusion did not alter optimum pH, optimum temperature, hydrolysis products, and an ability of preferential and rapid degradation towards raw rice starch, but catalytic efficiency and thermostability were remarkably improved compared with those of the wild-type AmyP. AmyP-Cr achieved the final hydrolysis degree of 61...
November 20, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/29159490/-prewarming-according-to-the-awmf-s3-guidelines-on-preventing-inadvertant-perioperative-hypothermia-2014-retrospective-analysis-of-7786-patients
#8
R Grote, A J Wetz, A Bräuer, M Menzel
BACKGROUND: Inadvertent perioperative hypothermia, which is defined as a core body temperature of less than 36.0 °C, can have serious consequences in surgery patients. These include cardiac complications, increased blood loss, wound infections and postoperative shivering; therefore, the scientific evidence that inadvertent perioperative hypothermia should be avoided is undisputed and several national guidelines have been published summarizing the scientific evidence and recommending specific procedures...
November 20, 2017: Der Anaesthesist
https://www.readbyqxmd.com/read/29158849/enhanced-antitumor-efficacy-of-biocompatible-magnetosomes-for-the-magnetic-hyperthermia-treatment-of-glioblastoma
#9
Raphaël Le Fèvre, Mickaël Durand-Dubief, Imène Chebbi, Chalani Mandawala, France Lagroix, Jean-Pierre Valet, Ahmed Idbaih, Clovis Adam, Jean-Yves Delattre, Charlotte Schmitt, Caroline Maake, François Guyot, Edouard Alphandéry
In this study, biologically synthesized iron oxide nanoparticles, called magnetosomes, are made fully biocompatible by removing potentially toxic organic bacterial residues such as endotoxins at magnetosome mineral core surfaces and by coating such surface with poly-L-lysine, leading to magnetosomes-poly-L-lysine (M-PLL). M-PLL antitumor efficacy is compared with that of chemically synthesized iron oxide nanoparticles (IONPs) currently used for magnetic hyperthermia. M-PLL and IONPs are tested for the treatment of glioblastoma, a dreadful cancer, in which intratumor nanoparticle administration is clinically relevant, using a mouse allograft model of murine glioma (GL-261 cell line)...
2017: Theranostics
https://www.readbyqxmd.com/read/29157042/head-out-immersion-in-hot-water-increases-serum-bdnf-in-healthy-males
#10
Daisuke Kojima, Takeshi Nakamura, Motohiko Banno, Yasunori Umemoto, Tokio Kinoshita, Yuko Ishida, Fumihiro Tajima
PURPOSE: Brain-derived neurotrophic factor (BDNF) is an important neurotrophin. The present study investigated the effects of head-out water immersion (HOI) on serum BDNF concentrations. METHODS: Eight healthy men performed 20 min head-out water immersion at 42 °C (hot-HOI) and 35 °C (neutral-HOI). These experimental trials were administered in a randomised order separated by at least 7 days. Venous blood samples were withdrawn at rest, immediately after the 20-min HOI, as well as at 15 and 30 min after the end of the HOI...
November 20, 2017: International Journal of Hyperthermia
https://www.readbyqxmd.com/read/29155851/pac1-and-vpac2-receptors-in-light-regulated-behavior-and-physiology-studies-in-single-and-double-mutant-mice
#11
Jens Hannibal, Birgitte Georg, Jan Fahrenkrug
The two sister peptides, pituitary adenylate cyclase activating polypeptide (PACAP) and vasoactive intestinal polypeptide (VIP) and their receptors, the PAC1 -and the VPAC2 receptors, are involved in regulation of the circadian timing system. PACAP as a neurotransmitter in the retinohypothalamic tract (RHT) and VIP as a neurotransmitter, involved in synchronization of SCN neurons. Behavior and physiology in VPAC2 deficient mice are strongly regulated by light most likely as a result of masking. Consequently, we used VPAC2 and PAC1/VPAC2 double mutant mice in comparison with PAC1 receptor deficient mice to further elucidate the role of PACAP in the light mediated regulation of behavior and physiology of the circadian system...
2017: PloS One
https://www.readbyqxmd.com/read/29155787/synthesis-of-core-shell-lanthanide-doped-upconversion-nanocrystals-for-cellular-applications
#12
Xiangzhao Ai, Linna Lyu, Jing Mu, Ming Hu, Zhimin Wang, Bengang Xing
Lanthanide-doped upconversion nanocrystals (UCNs) have attracted much attention in recent years based on their promising and controllable optical properties, which allow for the absorption of near-infrared (NIR) light and can subsequently convert it into multiplexed emissions that span over a broad range of regions from the UV to the visible to the NIR. This article presents detailed experimental procedures for high-temperature co-precipitation synthesis of core-shell UCNs that incorporate different lanthanide ions into nanocrystals for efficiently converting deep-tissue penetrable NIR excitation (808 nm) into a strong blue emission at 480 nm...
November 10, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29155597/aggregation-and-rheological-behavior-of-the-lavender-oil-pluronic-p123-microemulsions-in-water-ethanol-mixed-solvents
#13
Oyais Ahmad Chat, Nighat Nazir, Parvaiz Ahmad Bhat, Puthusserickal Abdulrahiman Hassan, Vinod Kumar Aswal, Aijaz Ahmad Dar
The effect of lavender oil on aggregation characteristics of P123 in aqueous-ethanolic solutions is investigated systematically by DLS, SANS and Rheology. The solubilization capacity of the formulation increased by increasing P123 concentration. The study unveiled the importance of the short chain alcohol-ethanol, as solubilization enhancer. The apparent hydrodynamic radius (Rh) increased significantly with increase in lavender oil concentration up to maximum oil solubilization capacity of the copolymer at a particular ethanol concentration...
November 20, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/29155551/the-template-assisted-wet-combustion-synthesis-of-fibrous-nickel-based-catalyst-for-carbon-dioxide-methanation-and-methane-steam-reforming
#14
Marina Aghayan, Dmitriy Potemkin, Fernando Rubio-Marcos, Sergey Uskov, P Snytnikov, Irina Hussainova
Efficient capture and recycling of CO2 enable not only preventing global warming but also to supplying useful low-carbon fuels. The catalytic conversion of CO2 into organic compound is a promising recycling approach which opens new concepts and opportunities for catalytic and industrial development. Here we report about template-assisted wet-combustion synthesis of one-dimensional nickel-based catalyst for carbon dioxide methanation and methane steam reforming. Due to a high temperature achieved in a short time during reaction and a large amount of gases evolved, the wet-combustion synthesis yields homogeneously precipitated nanoparticles of NiO with average particle size of 4 nm on alumina nanofibers covered with NiAl2O4 nano-layer...
November 20, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29154532/cus-based-theranostic-micelles-for-nir-controlled-combination-chemotherapy-and-photothermal-therapy-and-photoacoustic-imaging
#15
Guojun Chen, Ben Ma, Yuyuan Wang, Ruosen Xie, Chun Li, Kefeng Dou, Shaoqin Gong
Cancer remains a major threat to human health due to low therapeutic efficacies of currently available cancer treatment options. Nanotheranostics, capable of simultaneous therapy and diagnosis/monitoring of diseases, has attracted increasing amounts of attention, particularly for cancer treatment. In this study, CuS-based theranostic micelles capable of simultaneous combination chemotherapy and photothermal therapy (PTT), as well as photoacoustic imaging, were developed for targeted cancer therapy. The micelle was formed by a CuS nanoparticle (NP) functionalized by thermosensitive amphiphilic poly(acrylamide-acrylonitrile)-poly(ethylene glycol) block copolymers...
November 20, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29151606/a-spectroscopic-survey-of-orion-kl-between-41-5-and-50-ghz
#16
J R Rizzo, B Tercero, J Cernicharo
Context: The nearby massive star-forming region Orion KL is one of the richest molecular reservoirs known in our Galaxy. The region hosts newly formed protostars, and the strong interaction between their radiation and their outflows with the environment results in a series of complex chemical processes leading to a high diversity of interstellar tracers. The region is therefore one of the most frequently observed sources, and the site where many molecular species have been discovered for the first time...
September 2017: Astronomy and Astrophysics
https://www.readbyqxmd.com/read/29151348/polysulfone-sio2-hybrid-shell-microcapsules-synthesized-by-the-combination-of-pickering-emulsification-and-solvent-evaporation-technique-and-their-application-in-self-lubricating-composites
#17
Haiyan Li, Shuang Li, Zhike Li, Yanji Zhu, Huaiyuan Wang
Lubricant oil-filled polysulfone/SiO2 (PSF/SiO2) hybrid shell microcapsules are prepared by the combination of Pickering emulsification and the solvent evaporation technique. Silica particles are used as stabilizers. The structure and properties of the microcapsules are influenced by the silica particle concentration, agitation speed, and encapsulation temperature. The formation of PSF/SiO2 hybrid microcapsules is confirmed by scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FTIR), and thermal gravimetric analysis (TGA)...
November 18, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/29151177/mechanisms-of-drought-induced-dissipation-of-excitation-energy-in-sun-and-shade-adapted-drought-tolerant-mosses-studied-by-fluorescence-yield-change-and-global-and-target-analysis-of-fluorescence-decay-kinetics
#18
Hisanori Yamakawa, Ivo H M van Stokkum, Ulrich Heber, Shigeru Itoh
Some mosses stay green and survive long even under desiccation. Dissipation mechanisms of excess excitation energy were studied in two drought-tolerant moss species adapted to contrasting niches: shade-adapted Rhytidiadelphus squarrosus and sun-adapted Rhytidium rugosum in the same family. (1) Under wet conditions, a light-induced nonphotochemical quenching (NPQ) mechanism decreased the yield of photosystem II (PSII) fluorescence in both species. The NPQ extent saturated at a lower illumination intensity in R...
November 18, 2017: Photosynthesis Research
https://www.readbyqxmd.com/read/29150776/hyperpyrexia-as-the-presenting-symptom-of-intracranial-hypotension
#19
Omar Hussein, Michel Torbey
INTRODUCTION: Hyperpyrexia is a severely elevated core body temperature secondary to an elevated hypothalamic set thermo-regulatory threshold. Hyperthermia is an elevated core body temperature beyond the normal hypothalamic set thermo-regulatory threshold. Intracranial hypotension can present with a wide variety of symptoms ranging from orthostatic headache up to coma. We report a rare case of hyperpyrexia associated with intracranial hypotension. METHODS: A case report of a 55-year-old female patient with a history of angiogram-negative subarachnoid hemorrhage status post-ventriculoperitoneal (VP) shunt placement six years prior to admission who suddenly developed encephalopathy and high fever...
November 17, 2017: Neurocritical Care
https://www.readbyqxmd.com/read/29149404/the-translational-controlled-tumour-protein-tctp-biological-functions-and-regulation
#20
Ulrich-Axel Bommer
The Translational Controlled Tumour Protein TCTP (gene symbol TPT1, also called P21, P23, Q23, fortilin or histamine-releasing factor, HRF) is a highly conserved protein present in essentially all eukaryotic organisms and involved in many fundamental cell biological and disease processes. It was first discovered about 35 years ago, and it took an extended period of time for its multiple functions to be revealed, and even today we do not yet fully understand all the details. Having witnessed most of this history, in this chapter, I give a brief overview and review the current knowledge on the structure, biological functions, disease involvements and cellular regulation of this protein...
2017: Results and Problems in Cell Differentiation
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