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https://www.readbyqxmd.com/read/29156747/lethality-of-inappropriate-plasma-exposure-on-chicken-embryonic-development
#1
Jiao Jiao Zhang, Jin Oh Jo, Do Luong Huynh, Mrinmoy Ghosh, Nameun Kim, Sang Baek Lee, Hak Kyo Lee, Young Sun Mok, Taeho Kwon, Dong Kee Jeong
In this study, we examined the effects of non-thermal dielectric barrier discharge plasma on embryonic development in chicken eggs in order to determine the optimal level of plasma exposure for the promotion of embryonic growth. We exposed developing chicken embryos at either Hamburger-Hamilton (HH) stage 04 or HH 20 to plasma at voltages of 11.7 kV to 27.6 kV. Our results show exposure at 11.7 kV for 1 min promoted chicken embryonic development, but exposure to more duration and intensity of plasma resulted in dose-dependent embryonic death and HH 20 stage embryos survive longer than those at stage HH 04...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29156636/structural-electrical-magnetic-and-resistive-switching-properties-of-the-multiferroic-ferroelectric-bilayer-thin-films
#2
Ming-Cheng Kao, Hone-Zern Chen, San-Lin Young, Kai-Huang Chen, Jung-Lung Chiang, Jen-Bin Shi
Bi0.8Pr0.2Fe0.95Mn0.05O₃/Bi3.96Gd0.04Ti2.95W0.05O12 (BPFMO/BGTWO) bilayer thin films with Multiferroic/Ferroelectric (MF/FE) structures were deposited onto Pt(111)/Ti/SiO₂/Si(100) substrates by using the sol-gel method with rapid thermal annealing. The BPFMO/BGTWO thin films exhibited well-saturated ferromagnetic and ferroelectric hysteresis loops because of the electro-magnetic coupling induced by the MF/FE structure. The remnant magnetization (2Mr) and remnant polarization (2Pr) were 4.6 emu/cm³ and 62 μC/cm², respectively...
November 20, 2017: Materials
https://www.readbyqxmd.com/read/29156617/optimum-thermal-processing-for-extended-shelf-life-esl-milk
#3
REVIEW
Hilton Deeth
Extended shelf-life (ESL) or ultra-pasteurized milk is produced by thermal processing using conditions between those used for traditional high-temperature, short-time (HTST) pasteurization and those used for ultra-high-temperature (UHT) sterilization. It should have a refrigerated shelf-life of more than 30 days. To achieve this, the thermal processing has to be quite intense. The challenge is to produce a product that has high bacteriological quality and safety but also very good organoleptic characteristics...
November 20, 2017: Foods (Basel, Switzerland)
https://www.readbyqxmd.com/read/29156598/novel-montmorillonite-tio%C3%A2-mnal-mixed-oxide-composites-prepared-from-inverse-microemulsions-as-combustion-catalysts
#4
Bogna D Napruszewska, Alicja Michalik-Zym, Melania Rogowska, Elżbieta Bielańska, Wojciech Rojek, Adam Gaweł, Monika Wójcik-Bania, Krzysztof Bahranowski, Ewa M Serwicka
A novel design of combustion catalysts is proposed, in which clay/TiO₂/MnAl-mixed oxide composites are formed by intermixing exfoliated organo-montmorillonite with oxide precursors (hydrotalcite-like in the case of Mn-Al oxide) obtained by an inverse microemulsion method. In order to assess the catalysts' thermal stability, two calcination temperatures were employed: 450 and 600 °C. The composites were characterized with XRF (X-ray fluorescence), XRD (X-ray diffraction), HR SEM (high resolution scanning electron microscopy, N₂ adsorption/desorption at -196 °C, and H₂ TPR (temperature programmed reduction)...
November 19, 2017: Materials
https://www.readbyqxmd.com/read/29156587/a-subnano-g-electrostatic-force-rebalanced-flexure-accelerometer-for-gravity-gradient-instruments
#5
Shitao Yan, Yafei Xie, Mengqi Zhang, Zhongguang Deng, Liangcheng Tu
A subnano-g electrostatic force-rebalanced flexure accelerometer is designed for the rotating accelerometer gravity gradient instrument. This accelerometer has a large proof mass, which is supported inversely by two pairs of parallel leaf springs and is centered between two fixed capacitor plates. This novel design enables the proof mass to move exactly along the sensitive direction and exhibits a high rejection ratio at its cross-axis directions. Benefiting from large proof mass, high vacuum packaging, and air-tight sealing, the thermal Brownian noise of the accelerometer is lowered down to less than 0...
November 18, 2017: Sensors
https://www.readbyqxmd.com/read/29156582/in-memoriam-paolo-cappa
#6
EDITORIAL
Eduardo Palermo, Stefano Rossi, Fabrizio Patanè, Jeffrey Laut, Maurizio Porfiri
Prof. Paolo Cappa passed away on 26 August 2016, at the age of 59, after a long and courageous fight against cancer. Paolo Cappa was a Professor in Mechanical and Thermal Measurements and Experimental Biomechanics in the Department of Mechanical and Aerospace Engineering of Sapienza University of Rome, where he had also served as the Head of the Department, and a Research Professor in the Department of Mechanical and Aerospace Engineering of New York University Tandon School of Engineering. During his intense, yet short, career, he made several significant scientific contributions within the discipline of Mechanical and Thermal Measurements, pioneering fundamental applications to Biomechanics...
November 18, 2017: Sensors
https://www.readbyqxmd.com/read/29156558/indoor-temperatures-in-low-cost-housing-in-johannesburg-south-africa
#7
Nisha Naicker, June Teare, Yusentha Balakrishna, Caradee Yael Wright, Angela Mathee
Ambient and indoor temperature affects thermal comfort and human health. In a changing climate with a predicted change in temperature extremes, understanding indoor temperatures, both hot and cold, of different housing types is important. This study aimed to assess the hourly, daily and monthly variation in indoor temperatures in different housing types, namely formal houses, informal houses, flats, government-built low-cost houses and old, apartheid era low-cost housing, in five impoverished urban communities in Johannesburg, South Africa...
November 18, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/29156531/heated-naringin-mitigate-the-genotoxicity-effect-of-mitomycin-c-in-balb-c-mice-through-enhancing-the-antioxidant-status
#8
Mouna Maatouk, Nadia Mustapha, Imen Mokdad-Bzeouich, Hind Chaaban, Irina Ioannou, Kamel Ghedira, Mohamed Ghoul, Leila Chekir-Ghedira
A major problem with cancer chemotherapy is its severe toxic effects on non-target tissues. Assessment of natural products for their protective effect against anticancer drugs induced toxicity is gaining importance in cancer biology. The aim of the present study was to evaluate the effect of native and thermal treated naringin on the protective effect against mitomycin C (MMC) induced genotoxicity. The genotoxicity in liver kidney and brain cells isolated from Balb/C mice were evaluated by performing the comet assay...
November 15, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29156408/label-free-electrochemical-dna-biosensor-for-guanine-and-adenine-by-ds-dna-poly-l-cysteine-fe3o4-nanoparticles-graphene-oxide-nanocomposite-modified-electrode
#9
Majid Arvand, Mona Sanayeei, Shiva Hemmati
In this study, we aim to design a simple and effective electrochemical DNA biosensor based on a carbon paste electrode modified with ds-DNA/poly(L-cysteine)/Fe3O4 nanoparticles-graphene oxide (ds-DNA/p(L-Cys)/Fe3O4 NPs-GO/CPE) for sensitive detection of adenine (A) and guanine (G). The electrocatalytic oxidation of A and G on the electrode was explored by differential pulse voltammetry (DPV) and cyclic voltammetry (CV). This sensor shows separated and well-defined peaks for A and G, by which one can determine these biological bases individually or simultaneously...
November 7, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/29156317/benzimidazobenzothiazole-based-highly-efficient-thermally-activated-delayed-fluorescence-emitters-for-organic-light-emitting-diodes-a-quantum-chemical-td-dft-study
#10
Qiuling Zhu, Keke Wen, Songyan Feng, Xugeng Guo, Jinglai Zhang
Based upon two thermally activated delayed fluorescence (TADF) emitters 1 and 2, compounds 3-6 have been designed by replacing the carbazol group with the bis(4-biphenyl)amine one (3 and 4) and introducing the electron-withdrawing CF3 group into the acceptor unit of 3 and 4 (5 and 6). It is found that the present calculations predict comparable but relatively large energy differences (approximate 0.5eV) between the lowest singlet S1 and triplet T1 states (∆EST) for the six targeted compounds. In order to explain the highly-efficient TADF behavior observed in compounds 1 and 2, the"triplet reservoir" mechanism has been proposed...
November 15, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/29156313/synthesis-spectroscopic-and-td-dft-quantum-mechanical-study-of-azo-azomethine-dyes-a-laser-induced-trans-cis-trans-photoisomerization-cycle
#11
Anton Georgiev, Anton Kostadinov, Deyan Ivanov, Deyan Dimov, Simeon Stoyanov, Lian Nedelchev, Dimana Nazarova, Denitsa Yancheva
This paper describes the synthesis, spectroscopic characterization and quantum mechanical calculations of three azo-azomethine dyes. The dyes were synthesized via condensation reaction between 4-(dimethylamino)benzaldehyde and three different 4-aminobenzene azo dyes. Quantum chemical calculations on the optimized molecular geometry and electron densities of the trans (E) and cis (Z) isomers and their vibrational frequencies have been computed by using DFT/B3LYP density-functional theory with 6-311++G(d,p) basis set in vacuo...
November 7, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/29156251/optically-and-thermally-stimulated-luminescence-characteristics-of-laalo3-pr-3-beta-irradiated
#12
M A de León-Alfaro, A Morales-Hernández, J Roman-Lopez, J Zarate-Medina, T Rivera-Montalvo
This paper reports on an investigation into the thermally stimulated luminescence (TL) and optically stimulated luminescence (OSL) characteristics of novel luminescent phosphor. A new Pr(3+)-doped, lanthanum aluminate (LaAlO3)-based luminescent phosphor is developed. Samples of LaAlO3:Pr(3+) were irradiated to beta doses, in air, from 0.1Gy up to 50Gy and then were analyzed using both TL and continuous wavelength OSL (CW-OSL) techniques to determine their luminescent characteristics. This phosphor shows a TL glow curve, after its irradiation to beta radiation, with two TL peaks: one located around 160°C and a second at 300°C...
November 14, 2017: Applied Radiation and Isotopes
https://www.readbyqxmd.com/read/29156245/changes-in-activities-of-both-photosystems-and-the-regulatory-effect-of-cyclic-electron-flow-in-field-grown-cotton-gossypium-hirsutum-l-under-water-deficit
#13
Xiao-Ping Yi, Ya-Li Zhang, He-Sheng Yao, Ji-Mei Han, Wah Soon Chow, Da-Yong Fan, Wang-Feng Zhang
To clarify the influence of water deficit on the functionality of the photosynthetic apparatus of cotton plants, leaf gas exchange, chlorophyll a fluorescence, and P700 redox state were examined in field-grown cotton Gossypium hirsutum L. cv. Xinluzao 45. In addition, we measured changes in the P515 signal and analyzed the activity of ATP synthase and the trans-thylakoid proton gradient (ΔpH). With increasing water deficit, the net CO2 assimilation rate (AN) and stomatal conductance (gs) significantly decreased, but the maximum quantum efficiency of PSII photochemistry (Fv/Fm) did not change...
November 10, 2017: Journal of Plant Physiology
https://www.readbyqxmd.com/read/29156242/optimization-of-pmaxx-pretreatment-to-distinguish-between-human-norovirus-with-intact-and-altered-capsids-in-shellfish-and-sewage-samples
#14
Walter Randazzo, Mohammad Khezri, Joanna Ollivier, Françoise S Le Guyader, Jesús Rodríguez-Díaz, Rosa Aznar, Gloria Sánchez
Shellfish contamination by human noroviruses (HuNoVs) is a serious health and economic problem. Recently an ISO procedure based on RT-qPCR for the quantitative detection of HuNoVs in shellfish has been issued, but these procedures cannot discriminate between inactivated and potentially infectious viruses. The aim of the present study was to optimize a pretreatment using PMAxx to better discriminate between intact and heat-treated HuNoVs in shellfish and sewage. To this end, the optimal conditions (30min incubation with 100μM of PMAxx and 0...
November 15, 2017: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/29155964/effects-of-replacing-soybean-meal-with-chickpea-seeds-in-the-diet-on-mechanical-and-thermal-properties-of-tendon-tissue-in-broiler-chicken
#15
S Muszynski, M Kwiecien, M Swietlicki, P Dobrowolski, J Tatarczak, B Gladyszewska
The efficiency of the musculoskeletal system of broiler chickens, in particular during locomotion and in ensuring its supportive function, depends directly on the adequate function and mechanical endurance of soft tissues, including tendons. However, little is known whether the properties of musculoskeletal soft tissues can be influenced by changes of dietary protein. We substituted soybean meal with raw chickpea seeds as the primary protein source in the diet and studied the effects it had on the mechanical and thermal properties of drumstick tendons in broiler Ross 308 chickens...
November 15, 2017: Poultry Science
https://www.readbyqxmd.com/read/29155914/the-surface-plasmon-resonance-thermal-support-and-size-effect-induced-photocatalytic-activity-enhancement-of-au-reduced-graphene-oxide-for-selective-oxidation-of-benzylic-alcohols
#16
Yanhui Zhang, Hongxu Guo, Wen Weng, Ming-Lai Fu
Reduced graphene oxide (RGO) as an electron-conductive medium and photosensitizer have been widely used to construct efficient RGO/semiconductor photocatalysts for solar energy conversion; however, the role of RGO has been largely underestimated. Herein, the surface plasmon resonance (SPR) effect, thermal effect, support effect, and size effect of Au/RGO are demonstrated to play important roles in enhancing the photocatalytic activity, which has not been considered previously. Au/RGO nanocomposites, synthesized via a facile wet chemistry route, exhibit an excellent visible light photocatalytic performance for selective oxidation of benzylic alcohols...
November 20, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/29155908/iminium-and-enamine-catalysis-in-enantioselective-photochemical-reactions
#17
You-Quan Zou, Fabian M Hörmann, Thorsten Bach
Although enantioselective catalysis under thermal conditions has been well established over the last few decades, the enantioselective catalysis of photochemical reactions is still a challenging task resulting from the complex enantiotopic face differentiation in the photoexcited state. Recently, remarkable achievements have been reported by a synergistic combination of organocatalysis and photocatalysis, which have led to the expedient construction of a diverse range of enantioenriched molecules which are generally not easily accessible under thermal conditions...
November 20, 2017: Chemical Society Reviews
https://www.readbyqxmd.com/read/29155783/scale-up-chemical-synthesis-of-thermally-activated-delayed-fluorescence-emitters-based-on-the-dibenzothiophene-s-s-dioxide-core
#18
Oleh Vybornyi, Neil J Findlay, Peter J Skabara
We report a procedure to linearly scale-up the synthesis of 2,8-bis(3,6-di-tert-butyl-9H-carbazol-9-yl)dibenzothiophene-S,S-dioxide (compound 4) and 2,8-bis(10H-phenothiazin-10-yl)dibenzothiophene-S,S-dioxide (compound 5) using Buchwald-Hartwig cross-coupling reaction conditions. In addition, we demonstrate a scaled-up synthesis of all non-commercially available starting materials that are required for the amination cross-coupling reaction. In the present article, we provide the detailed synthetic procedures for all of the described compounds, alongside their spectral characterization...
October 24, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29155710/dna-nanotubes-as-a-versatile-tool-to-study-semiflexible-polymers
#19
Jörg Schnauß, Martin Glaser, Jessica S Lorenz, Carsten Schuldt, Christin Möser, Martin Sajfutdinow, Tina Händler, Josef A Käs, David M Smith
Mechanical properties of complex, polymer-based soft matter, such as cells or biopolymer networks, can be understood in neither the classical frame of flexible polymers nor of rigid rods. Underlying filaments remain outstretched due to their non-vanishing backbone stiffness, which is quantified via the persistence length (lp), but they are also subject to strong thermal fluctuations. Their finite bending stiffness leads to unique, non-trivial collective mechanics of bulk networks, enabling the formation of stable scaffolds at low volume fractions while providing large mesh sizes...
October 25, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29155640/recurrence-of-renal-cell-cancers-after-thermal-ablation
#20
Yanjun Bai
No abstract text is available yet for this article.
December 2017: Radiology
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