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https://www.readbyqxmd.com/read/28938776/meta-analytic-study-of-organic-acids-as-an-alternative-performance-enhancing-feed-additive-to-antibiotics-for-broiler-chickens
#1
G V Polycarpo, I Andretta, M Kipper, V C Cruz-Polycarpo, J C Dadalt, P H M Rodrigues, R Albuquerque
The effect of organic acids as an alternative to antibiotics on the performance of broiler chickens was evaluated by meta-analysis, identifying and quantifying the main factors that influence results. A total of 51,960 broilers from 121 articles published between 1991 and 2016 were used. Interactions of additives [non-supplemented group (control), organic acids, and growth promoter antibiotics] with microbial challenge (with or without inoculation of pathogenic microorganisms) were studied on performance variables...
October 1, 2017: Poultry Science
https://www.readbyqxmd.com/read/28935949/tunable-polarization-conversion-and-rotation-based-on-a-reconfigurable-metasurface
#2
M Zhang, W Zhang, A Q Liu, F C Li, C F Lan
Polarization is an important property of electromagnetic (EM) wave and different polarization manipulations are required for varied optical applications. Here we report a reconfigurable metasurface which achieves both the polarization conversion and the polarization rotation in THz regime. The metasurface is reconfigured through the micro-electro-mechanical-systems (MEMS) actuation. The cross polarization transmittance from a linear polarized incidence is experimentally tuned from 0 to 28% at 2.66 THz. In addition, the polarization rotation angle is effectively changed from -12...
September 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28933937/changes-in-sugar-sweetened-soda-consumption-weight-and-waist-circumference-2-year-cohort-of-mexican-women
#3
Dalia Stern, Nicole Middaugh, Megan S Rice, Francine Laden, Ruy López-Ridaura, Bernard Rosner, Walter Willett, Martin Lajous
OBJECTIVES: To evaluate 2-year changes in soda consumption, weight, and waist circumference. METHODS: We followed 11 218 women from the Mexican Teachers' Cohort from 2006 to 2008. Dietary data were collected using a semiquantitative food frequency questionnaire. Weight was self-reported, and waist circumference was self-measured. We used linear regression to evaluate changes in sugar-sweetened and sugar-free soda consumption in relation to changes in weight and waist circumference, adjusting for lifestyle and other dietary factors...
September 21, 2017: American Journal of Public Health
https://www.readbyqxmd.com/read/28933838/gold-iii-nhc-complexes-for-catalyzing-dihydroalkoxylation-and-hydroamination-reactions
#4
Ashwin G Nair, Roy T McBurney, Mark R D Gatus, Samantha C Binding, Barbara A Messerle
A gold(III) complex of an N-heterocyclic carbene based hemilabile ligand with two pendant pyrazole arms (1,3-bis((1H-pyrazol-3-yl)methyl)-2,3-dihydro-1H-imidazole, LH) was synthesized. Complex [LAu(III)Cl3] is an excellent catalyst for promoting dihydroalkoxylation at room temperature, even catalyzing this reaction at 0 °C. [LAu(III)Cl3] is one of the most efficient catalysts reported to date for the spirocyclization of alkynyl diols. Furthermore, [LAu(III)Cl3] catalyzed intra- and intermolecular hydroamination reactions, achieving good to excellent conversions...
September 21, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28932662/high-mobility-p-type-organic-semiconducting-interlayer-enhancing-efficiency-and-stability-of-perovskite-solar-cells
#5
Mingyu Zhang, Jiayu Wang, Liang Li, Guanhaojie Zheng, Kuan Liu, Meng Qin, Huanping Zhou, Xiaowei Zhan
A high-mobility p-type organic semiconductor based on benzodithiophene and diketopyrrolopyrrole with linear alkylthio substituents (BDTS-2DPP) is used as a dual function interfacial layer to modify the interface of perovskite/2,2',7,7'-tetrakis(N,N'-di-p-methoxyphenylamine)-9,9'-spirobifluorene in planar perovskite solar cells. The BDTS-2DPP layer can remarkably passivate the surface defects of perovskite through the formation of Lewis adduct between the under-coordinated Pb atoms in perovskite and S atoms in BDTS-2DPP, and also shows efficient hole extraction and transfer properties...
September 2017: Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
https://www.readbyqxmd.com/read/28928487/spiraling-light-with-magnetic-metamaterial-quarter-wave-turbines
#6
Jinwei Zeng, Ting S Luk, Jie Gao, Xiaodong Yang
Miniaturized quarter-wave plate devices empower spin to orbital angular momentum conversion and vector polarization formation, which serve as bridges connecting conventional optical beam and structured light. Enabling the manipulability of additional dimensions as the complex polarization and phase of light, quarter-wave plate devices are essential for exploring a plethora of applications based on orbital angular momentum or vector polarization, such as optical sensing, holography, and communication. Here we propose and demonstrate the magnetic metamaterial quarter-wave turbines at visible wavelength to produce radially and azimuthally polarized vector vortices from circularly polarized incident beam...
September 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28924221/magnetic-tunnel-junction-as-an-on-chip-temperature-sensor
#7
Abhronil Sengupta, Chamika Mihiranga Liyanagedera, Byunghoo Jung, Kaushik Roy
Temperature sensors are becoming an increasingly important component in System-on-Chip (SoC) designs with increasing transistor scaling, power density and associated heating effects. This work explores a compact nanoelectronic temperature sensor based on a Magnetic Tunnel Junction (MTJ) structure. The MTJ switches probabilistically depending on the operating temperature in the presence of thermal noise. Performance evaluation of the proposed MTJ temperature sensor, based on experimentally measured device parameters, reveals that the sensor is able to achieve a conversion rate of 2...
September 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28922644/temperature-dependent-polymorphism-of-pyrazinamide-an-in-situ-raman-and-dft-study
#8
Poornima Sharma, Rajib Nandi, Debraj Gangopadhyay, Anurag Singh, Ranjan K Singh
The α and γ polymorphs of drug pyrazinamide have been detected with the help of temperature dependent Raman spectroscopic technique. Pyrazinamide is a very useful drug used for the treatment of tuberculosis (TB) and plays a significant role in destroying the dormant tubercle bacilli which are not destroyed by other common TB drugs. Temperature dependent Raman spectra suggest polymorphic phase change from α→γ form of pyrazinamide between 145 and 146°C. In situ Raman spectra of pyrazinamide between 145 and 146°C show the conversion of α→γ form by the shift in CO stretching vibration accompanied by several other changes...
September 13, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28922422/psychological-effects-of-the-intensified-follow-up-of-the-ceawatch-trial-after-treatment-for-colorectal-cancer
#9
Zhuozhao Zhan, Charlotte J Verberne, Edwin R van den Heuvel, Irene Grossmann, Adelita V Ranchor, Theo Wiggers, Geertruida H de Bock
BACKGROUND: The aim of the study was to evaluate psychological effects of the state-of-art intensified follow-up protocol for colorectal cancer patients in the CEAwatch trial. METHOD: At two time points during the CEAwatch trial questionnaires regarding patients' attitude towards follow-up, patients' psychological functioning and patients' experiences and expectations were sent to participants by post. Linear mixed models were fitted to assess the influences and secular trends of the intensified follow-up on patients' attitude towards follow-up and psychological functioning...
2017: PloS One
https://www.readbyqxmd.com/read/28922373/dynein-light-chain-regulates-adaptive-and-innate-b-cell-development-by-distinctive-genetic-mechanisms
#10
Ashleigh King, Lingli Li, David M Wong, Rui Liu, Rebecca Bamford, Andreas Strasser, David M Tarlinton, Jörg Heierhorst
Mechanistic differences in the development and function of adaptive, high-affinity antibody-producing B-2 cells and innate-like, "natural" antibody-producing B-1a cells remain poorly understood. Here we show that the multi-functional dynein light chain (DYNLL1/LC8) plays important roles in the establishment of B-1a cells in the peritoneal cavity and in the ongoing development of B-2 lymphoid cells in the bone marrow of mice. Epistasis analyses indicate that Dynll1 regulates B-1a and early B-2 cell development in a single, linear pathway with its direct transcriptional activator ASCIZ (ATMIN/ZNF822), and that the two genes also have complementary functions during late B-2 cell development...
September 18, 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28920436/rational-design-of-solution-processed-ti-fe-o-ternary-oxides-for-efficient-planar-ch3nh3pbi3-perovskite-solar-cells-with-suppressed-hysteresis
#11
Xin Li, Feng Hao, Xingyue Zhao, Xuewen Yin, Zhibo Yao, Ying Guo, Heping Shen, Hong Lin
Electron extraction layer (EEL) plays a critical role in organometal-halide perovskite solar cells (PSCs) by determining the charge extraction and ultimately their power conversion efficiencies. Here, Ti-Fe-O ternary oxide was firstly demonstrated as an efficient EEL candidate in the planar PSC, showing superiority in multiple aspects including the intrinsic precursor stability, coverage on the substrates, electrical properties, and energy levels compared to the widely used TiOx and the pure FeOx. By varying Fe content from 0% to 100% in the Ti-Fe-O composite, the conductivities of the resultant compact layers were markedly improved, according to consistent results from conductive atomic force microscopy (CAFM) and linear sweep voltammetry (LSV) measurements...
September 18, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28919509/molecular-and-macro-scale-analysis-of-enzyme-crosslinked-silk-hydrogels-for-rational-biomaterial-design
#12
Meghan McGill, Jeannine M Coburn, Benjamin P Partlow, Xuan Mu, David L Kaplan
Silk fibroin-based hydrogels have exciting applications in tissue engineering and therapeutic molecule delivery; however, their utility is dependent on their diffusive properties. The present study describes a molecular and macro-scale investigation of enzymatically-crosslinked silk fibroin hydrogels, and demonstrates that these systems have tunable crosslink density and diffusivity. We developed a liquid chromatography tandem mass spectroscopy (LC-MS/MS) method to assess the quantity and order of covalent tyrosine crosslinks in the hydrogels...
September 14, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28917752/facilely-self-assembled-magnetic-nanoparticles-aptamer-carbon-dots-nanocomposites-for-highly-sensitive-up-conversion-fluorescence-turn-on-detection-of-tetrodotoxin
#13
Hui Jin, Rijun Gui, Jie Sun, Yanfeng Wang
In this work, magnetic Fe3O4 nanoparticles (NPs) were modified with aptamer of tetrodotoxin (TTX) to form Fe3O4/aptamer complex. The self-assembling of carbon dots (CDs) and the aptamer generated Fe3O4/aptamer/CDs nanocomposites. The nanocomposites exhibited down-conversion fluorescence and up-conversion fluorescence (UCF) emissions simultaneously. When excited at a wavelength of 780nm, the UCF (peaked at 475nm) of nanocomposites increased regularly with the increase of TTX concentration [TTX]. In the [TTX] range from 0...
January 1, 2018: Talanta
https://www.readbyqxmd.com/read/28912561/luminophore-configuration-and-concentration-dependent-optoelectronic-characteristics-of-a-quantum-dot-embedded-dna-hybrid-thin-film
#14
Velu Arasu, Sreekantha Reddy Dugasani, Mallikarjuna Reddy Kesama, Ho Kyoon Chung, Sung Ha Park
To be useful in optoelectronic devices and sensors, a platform comprising stable fluorescence materials is essential. Here we constructed quantum dots (QDs) embedded DNA thin films which aims for stable fluorescence through the stabilization of QDs in the high aspect ratio salmon DNA (SDNA) matrix. Also for maximum luminescence, different concentration and configurations of core- and core/alloy/shell-type QDs were embedded within SDNA. The QD-SDNA thin films were constructed by drop-casting and investigated their optoelectronic properties...
September 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28912255/sex-hormones-and-the-development-of-sexual-size-dimorphism-dihydrotestosterone-inhibits-growth-in-a-female-larger-lizard-sceloporus-undulatus
#15
Nicholas B Pollock, Stephanie Feigin, Marko Drazenovic, Henry B John-Alder
Sexual differences in adult body size (sexual size dimorphism; SSD) and color (sexual dichromatism) are widespread, and both male- and female-biased dimorphisms are observed even among closely related species. A growing body of evidence indicates testosterone (T) can regulate growth, thus the development of SSD, and sexual dichromatism. However, the mechanism(s) underlying these effects are conjectural, including possible conversions of T to estradiol (E2) or 5 α-dihydrotestosterone (DHT). In the present study, we hypothesized that effects of T are physiological responses mediated by androgen receptors, and we tested two specific predictions: 1) that DHT would mimic effects of T by inhibiting growth and enhancing coloration, and 2) that removal of endogenous T via surgical castration would stimulate growth...
September 14, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28912105/high-bmi-and-male-sex-as-risk-factor-for-increased-short-term-renal-impairment-in-living-kidney-donors-retrospective-analysis-of-289-consecutive-cases
#16
Lukas W Unger, Joy Feka, Philipp Sabler, Susanne Rasoul-Rockenschaub, Georg Györi, Michael Hofmann, Christoph Schwarz, Thomas Soliman, Georg Böhmig, Alexander Kainz, Andreas Salat, Gabriela A Berlakovich
BACKGROUND: Kidney transplantation represents the treatment of choice for end-stage renal disease (ESRD). However, nephrectomy bears certain short- as well as long-term risks for the healthy, voluntary donor. As obesity is increasing and is a known risk factor for surgical complications, we wanted to assess the impact of BMI on perioperative complication rates and renal function. MATERIALS AND METHODS: We retrospectively assessed patients undergoing living donor kidney nephrectomy at our institution...
September 11, 2017: International Journal of Surgery
https://www.readbyqxmd.com/read/28910938/-comparison-of-commercial-hiv-1-viral-load-tests-by-using-proficiency-test-results-in-china-2013-2015
#17
L Zhang, C Jin, Z Jiang, T Tang, Y Jiang, P L Pan
Objective: To compare the bio-equivalence among commercial HIV-1 viral load tests, including EasyQ HIV-1 v2.0 (EasyQ) from bioMerieux NucliSens of France; VERSANT HIV-1 RNA 3.0 assay (bDNA) from Siemens Healthcare Diagnostics of USA; COBAS AmpliPrep/COBAS TaqMan HIV-1 test (Taqman) from Roche Molecular Diagnosis of USA; Abbott Real Time HIV-1 Kit (M2000) from Abbott Molecular of USA and two domestic HIV-1 viral load test kits (domestic kit) from DaAn Gene Company of Sun Yat-Sen University and Liaoning Bio-Pharmaceutical company of Northeast pharmaceutical group, by using proficiency test results in China from 2013 to 2015...
September 10, 2017: Zhonghua Liu Xing Bing Xue za Zhi, Zhonghua Liuxingbingxue Zazhi
https://www.readbyqxmd.com/read/28905623/electropumping-of-water-through-human-aquaporin-4-by-circularly-polarized-electric-fields-dramatic-enhancement-and-control-revealed-by-non-equilibrium-molecular-dynamics
#18
Christian J Burnham, Niall J English
An extensive suite of nonequilibrium molecular-dynamics (NEMD) simulations have been performed for ∼60 ns of human aquaporin 4 in externally applied circularly polarized (CP) electric fields, applied axially along channels. These external fields were 0.05 V/Å in intensity and 100 GHz in frequency. This has the effect of "electro-pumping" the water through the pores as prototypical biochannels, from conversion of molecules' spin angular momentum to linear momentum in the asymmetric heterogeneous-frictional environment of the pores, thus inducing overall net flow...
September 14, 2017: Journal of Physical Chemistry Letters
https://www.readbyqxmd.com/read/28905394/neutron-damage-induced-in-cardiovascular-implantable-electronic-devices-from-a-clinical-18-mv-photon-beam-a-monte-carlo-study
#19
Ahad Ollah Ezzati, Matthew T Studenski
PURPOSE: To quantify the relative neutron damage induced in CIEDs from clinical 18 MV photon beams for varying field sizes, depths and off axis distances. METHODS AND MATERIALS: Damage was assessed using silicon damage response functions and ICRP neutron dose conversion factors in MCNPX. Particular attention was devoted to the modelling of the Varian 2100C/D linear accelerator to ensure accurate contamination neutron spectra. Neutron dose, fluence and relative damage to CIEDs was calculated...
September 14, 2017: Medical Physics
https://www.readbyqxmd.com/read/28894866/optimal-geometrical-design-of-inertial-vibration-dc-piezoelectric-nanogenerators-based-on-obliquely-aligned-inn-nanowire-arrays
#20
Nai-Jen Ku, Guocheng Liu, Chao-Hung Wang, Kapil Gupta, Wei-Shun Liao, Dayan Ban, Chuan-Pu Liu
Piezoelectric nanogenerators have been investigated to generate electricity from environmental vibrations due to their energy conversion capabilities. In this study, we demonstrate an optimal geometrical design of inertial vibration direct-current piezoelectric nanogenerators based on obliquely aligned InN nanowire (NW) arrays with an optimized oblique angle of ∼58°, and driven by the inertial force of their own weight, using a mechanical shaker without any AC/DC converters. The nanogenerator device manifests potential applications not only as a unique energy harvesting device capable of scavenging energy from weak mechanical vibrations, but also as a sensitive strain sensor...
September 12, 2017: Nanoscale
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