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https://www.readbyqxmd.com/read/28734871/the-role-of-temporal-contrast-and-blue-light-in-emmetropization
#1
Frances Rucker, Mark Henriksen, Tiffany Yanase, Christopher Taylor
A previous experiment showed that blue light (as a component of white light) protected against low temporal frequency dependent eye growth. This experiment investigated the role of temporal contrast. White leghorn chicks were exposed to white (with blue) or yellow (without blue) LED lighting modulated at either low (0.2 Hz) or high (10 Hz) temporal frequencies. Four cone contrast conditions were used: low (16%), medium (32%), medium-high (60%) and very-high (80%). Chicks were exposed to the lighting condition for 3 days (mean 680 lux)...
July 19, 2017: Vision Research
https://www.readbyqxmd.com/read/28733835/competition-and-coexistence-in-a-small-carnivore-guild
#2
Jacques de Satgé, Kristine Teichman, Bogdan Cristescu
The potential for strong competition among small sympatric carnivores results in a need for coexistence strategies whereby competitors partition along spatial, temporal and dietary axes as a means to reduce ecological overlaps. We determined spatial and temporal partitioning patterns of a guild of small African carnivores: the African wildcat Felis silvestris lybica, grey mongoose Galerella pulverulenta, small-spotted genet Genetta genetta, striped polecat Ictonyx striatus, and the yellow mongoose Cynictis penicillata...
July 21, 2017: Oecologia
https://www.readbyqxmd.com/read/28733655/lectin-mediated-reversible-immobilization-of-human-cells-into-a-glycosylated-macroporous-protein-hydrogel-as-a-cell-culture-matrix
#3
Nicholas Bodenberger, Dennis Kubiczek, Laura Trösch, Ali Gawanbacht, Susanne Wilhelm, Denis Tielker, Frank Rosenau
3D cell culture is a helpful approach to study cell-cell interaction in a native-like environment, but is often limited due the challenge of retrieving cells from the material. In this study, we present the use of recombinant lectin B, a sugar-binding protein with four binding cavities, to enable reversible cell integration into a macroporous protein hydrogel matrix. By functionalizing hydrogel precursors with saccharose, lectin B can both bind to sugar moieties on the cellular surface as well as to the modified hydrogel network...
July 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28733251/rna-binding-protein-raly-promotes-protein-arginine-methyltransferase-1-alternatively-spliced-isoform-v2-relative-expression-and-metastatic-potential-in-breast-cancer-cells
#4
Emma Bondy-Chorney, R Mitchell Baldwin, Andréanne Didillon, Benoît Chabot, Bernard J Jasmin, Jocelyn Côté
Aberrant expression of Protein Arginine Methyltransferases (PRMTs) has been observed in several cancer types, including breast cancer. We previously reported that the PRMT1v2 isoform, which is generated through inclusion of alternative exon 2, is overexpressed in breast cancer cells and promotes their invasiveness. However, the precise mechanism by which expression of this isoform is controlled and how it is dysregulated in breast cancer remains unknown. Using a custom RNA interference-based screen, we identified several RNA binding proteins (RBP) which, when knocked down, altered the relative abundance of the alternatively spliced PRMT1v2 isoform...
July 18, 2017: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/28733040/variations-in-the-concentrations-of-heavy-metals-through-enforcement-of-a-rest-year-system-and-dredged-sediment-capping-at-the-yellow-sea-byung-dumping-site-korea
#5
Chang-Soo Chung, Ki-Hoon Song, Ki-Young Choi, Young-Il Kim, Hye-Eun Kim, Jun-Mo Jung, Chang-Joon Kim
In 2014, the concentrations of 13 heavy metals in surface sediments from 14 sampling stations were analyzed and compared to samples from previous years to evaluate the remediation effectiveness of the "rest-year" (RY) system and capping with dredged material at the Yellow Sea-Byung dumping site offshore Korea. Since the 2006 introduction of the RY system, annual variations in metal concentrations at stations within the RY zone have gradually decreased over time. Heavy metal concentrations at most stations were lower than sediment quality guidelines, indicating the success of the RY system...
July 18, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28732979/sonocatalytic-degradation-of-reactive-yellow-39-using-synthesized-zro2-nanoparticles-on-biochar
#6
Alireza Khataee, Berkant Kayan, Peyman Gholami, Dimitrios Kalderis, Sema Akay, Laleh Dinpazhoh
ZrO2-biochar (ZrO2-BC) nanocomposite was prepared by a modified sonochemical/sol-gel method. The physicochemical properties of the prepared nanocomposite were evaluated using scanning electron microscopy, energy-dispersive X-ray spectroscopy, X-ray fluorescence, Fourier transform infrared spectroscopy and Brunauer-Emmett-Teller model. The sonocatalytic performance of ZrO2-BC was investigated in sonochemical degradation of Reactive Yellow 39 (RY39). The high observed sonocatalytic activity of the ZrO2-BC sample could be interpreted by the mechanisms of sonoluminescence and hot spots...
November 2017: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/28732107/characteristic-flavor-of-traditional-soup-made-by-stewing-chinese-yellow-feather-chickens
#7
Jun Qi, Deng-Yong Liu, Guang-Hong Zhou, Xing-Lian Xu
The traditional recipe for Chinese chicken soup creates a popular taste of particular umami and aroma. The present study investigated the effects of stewing time (1, 2, and 3 h) on the principal taste-active and volatile compounds and the overall flavor profile of traditional Chinese chicken soup by measuring the contents of free amino acids (FAAs), 5'-nucleotides, minerals and volatile compounds and by evaluating the taste and aroma profiles using an electronic nose, an electronic tongue and a human panel...
July 21, 2017: Journal of Food Science
https://www.readbyqxmd.com/read/28731672/-urticaria-pigmentosa-clinical-and-therapeutic-aspects-for-the-paediatrician
#8
Catherina Moll-Manzur, Esteban Araos-Baeriswyl, Camila Downey, María T Dossi
Urticaria pigmentosa, also known as maculopapular mastocytosis, is the most common type of paediatric mastocytosis. It presents with yellow to brown macules or papules, usually located on trunk and extremities. Regarding its diagnostic and therapeutic implications, the objective of this article is to serve as an update for the paediatrician on the most relevant aspects of this pathology.
August 1, 2017: Archivos Argentinos de Pediatría
https://www.readbyqxmd.com/read/28731285/plant-infection-by-two-different-viruses-induce-contrasting-changes-of-vectors-fitness-and-behavior
#9
Quentin Chesnais, Aude Couty, Maryline Uzest, Véronique Brault, Arnaud Ameline
Insect-vectored plant viruses can induce changes in plant phenotypes, thus influencing plant-vector interactions in a way that may promote their dispersal according to their mode of transmission (i.e. circulative vs. non-circulative). This indirect vector manipulation requires host-virus-vector co-evolution and would thus be effective solely in very specific plant-virus-vector species associations. Some studies suggest this manipulation may depend on multiple factors relative to various intrinsic characteristics of vectors such as transmission efficiency...
July 21, 2017: Insect Science
https://www.readbyqxmd.com/read/28731099/novel-phosphorescent-cationic-iridium-iii-complexes-with-o-carboranylation-on-the-ancillary-n-n-ligand
#10
Xiang Li, Yongheng Yin, Hong Yan, Changsheng Lu, Qiang Zhao
A novel series of heteroleptic iridium complexes with 2-phenyl-pyridine as a main ligand and carborane-functionalized 2,2'-bipyridine as an ancillary ligand were synthesized, and characterized as [Ir(ppy)2(By)]PF6 (where ppy is 2-phenyl-pyridine, By is 5-(2-R-Cb)-2,2'-bipyridine, R = H (2a), CH3 (2b), Ph (2c), iPr (2d) and iBu (2e), or By is 4-(2-R-Cb)-2,2'-bipyridine while R = H (3a), CH3 (3b), Ph (3c), iPr (3d) and iBu (3e), Cb = o-carboran-1-yl). The R groups and the substitution sites of carborane on the pyridine ring have caused differences in the emission properties of these complexes...
July 21, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28730807/cationic-carbon-dots-for-modification-free-detection-of-hyaluronidase-via-an-electrostatic-controlled-ratiometric-fluorescence-assay
#11
Weiqiang Yang, Jiancong Ni, Fang Luo, Wen Weng, Qiao-Hua Wei, Zhenyu Lin, Guonan Chen
Carbon dots (CDs) emerge as excellent fluorescent nanomaterials, but the full exploitation and application of their exceptional properties in the development of fluorescence assay are still rare. In this work, cationic carbon dots (C-CDs) covered with a plenty of positive charges on the surface were synthesized through a facile ultrasonic method. Negatively charged hyaluronic acid (HA) caused the aggregation of positively charged C-CDs and neutral red (NR) along its linear chain via electrostatic adsorption, leading to a remarkable förster resonance energy transfer (FRET) from C-CDs to NR...
July 21, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28728996/conditions-for-success-of-engineered-underdominance-gene-drive-systems
#12
Matthew P Edgington, Luke S Alphey
Engineered underdominance is one of a number of different gene drive strategies that have been proposed for the genetic control of insect vectors of disease. Here we model a two-locus engineered underdominance based gene drive system that is based on the concept of mutually suppressing lethals. In such a system two genetic constructs are introduced, each possessing a lethal element and a suppressor of the lethal at the other locus. Specifically, we formulate and analyse a population genetics model of this system to assess when different combinations of release strategies (i...
July 17, 2017: Journal of Theoretical Biology
https://www.readbyqxmd.com/read/28728307/changes-in-reference-evapotranspiration-and-its-driving-factors-in-the-middle-reaches-of-yellow-river-basin-china
#13
Dunxian She, Jun Xia, Yongyong Zhang
Reference evapotranspiration (ET0) is important for agricultural, environmental and other studies, and understanding the attribution of its change is helpful to provide information for irrigation scheduling and water resources management. The present study investigates the attribution of the change of ET0 at 49 meteorological stations in the middle reaches of Yellow River basin (MRYRB) of China from 1960 to 2012. Results show that annual ET0 increases from the northwest to the southeast of MRYRB in space. We find that annual ET0 clearly presents a zigzag change pattern rather than a monotonically change during the whole period...
July 16, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28727779/contemporary-status-of-insecticide-resistance-in-the-major-aedes-vectors-of-arboviruses-infecting-humans
#14
REVIEW
Catherine L Moyes, John Vontas, Ademir J Martins, Lee Ching Ng, Sin Ying Koou, Isabelle Dusfour, Kamaraju Raghavendra, João Pinto, Vincent Corbel, Jean-Philippe David, David Weetman
Both Aedes aegytpi and Ae. albopictus are major vectors of 5 important arboviruses (namely chikungunya virus, dengue virus, Rift Valley fever virus, yellow fever virus, and Zika virus), making these mosquitoes an important factor in the worldwide burden of infectious disease. Vector control using insecticides coupled with larval source reduction is critical to control the transmission of these viruses to humans but is threatened by the emergence of insecticide resistance. Here, we review the available evidence for the geographical distribution of insecticide resistance in these 2 major vectors worldwide and map the data collated for the 4 main classes of neurotoxic insecticide (carbamates, organochlorines, organophosphates, and pyrethroids)...
July 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28727423/seasonal-variation-of-terrigenous-pahs-along-the-marginal-seas-of-china-input-phase-partitioning-ocean-current-transport
#15
Miao-Lei Ya, Xin-Hong Wang, Yu-Ling Wu, Yong-Yu Li, Jing-Ming Yan, Chao Fang, Yan-Yan Zhao, Ran-Ran Qian, Xiao-Long Lin
To study the spatial distributions and seasonal differences of concentrations, source identification, and phase partitioning of polycyclic aromatic hydrocarbons (PAHs) in the surface water, intensive sampling was carried out along the marginal seas of China in four seasons. In the northern South China Sea (SCS), the highest PAH levels occurred in summer (July to August) and autumn (October to November). In the East China Sea (ECS) and the Yellow Sea, the highest occurred in summer (August) and winter (December)...
July 20, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28727042/dietary-supplementation-with-arginine-and-glutamic-acid-modifies-growth-performance-carcass-traits-and-meat-quality-in-growing-finishing-pigs
#16
C J Hu, Q Y Jiang, T Zhang, Y L Yin, F N Li, J P Deng, G Y Wu, X F Kong
Sixty Duroc × Large White × Landrace pigs with an average initial BW of 77.1 ± 1.3 kg were used to investigate the effects of dietary supplementation with arginine and glutamic acid on growth performance, carcass traits, and meat quality in growing-finishing pigs. The animals were randomly assigned to 1 of 5 treatment groups (12 pigs/group, male:female ratio 1:1). The pigs in the control group were fed a basal diet (basal diet group), and those in the experimental groups were fed the basal diet supplemented with 2...
June 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28727038/genetic-correlations-between-wool-traits-and-carcass-traits-in-merino-sheep
#17
S I Mortimer, S Hatcher, N M Fogarty, J H J van der Werf, D J Brown, A A Swan, R H Jacob, G H Geesink, D L Hopkins, J E Hocking Edwards, E N Ponnampalam, K L Pearce, D W Pethick
Genetic correlations between 29 wool production and quality traits and 14 whole carcass measures and carcass component traits were estimated from the Information Nucleus of 8 flocks managed across a range of Australian sheep production environments and genetically linked. Wool data were from over 5,000 Merino progeny born over 5 yr, whereas carcass data were from over 1,200 wether progeny of over 176 sires, slaughtered at about 21 kg carcass weight, on average. Wool traits included yearling and adult records for wool weight, fiber diameter, fiber diameter variation, staple strength, scoured color, and visual scores for breech and body wrinkle...
June 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28726993/genetic-parameters-for-wool-traits-live-weight-and-ultrasound-carcass-traits-in-merino-sheep
#18
S I Mortimer, S Hatcher, N M Fogarty, J H J van der Werf, D J Brown, A A Swan, J C Greeff, G Refshauge, J E Hocking Edwards, G M Gaunt
Genetic correlations between 29 wool production and quality traits and live weight and ultrasound fat depth (FAT) and eye muscle depth (EMD) traits were estimated from the Information Nucleus (IN). The IN comprised 8 genetically linked flocks managed across a range of Australian sheep production environments. The data were from a maximum of 9,135 progeny born over 5 yr from 184 Merino sires and 4,614 Merino dams. The wool traits included records for yearling and adult fleece weight, fiber diameter (FD), staple length (SL), fiber diameter CV (FDCV), scoured color, and visual scores for breech and body wrinkle...
May 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28726908/mn-4-li-co-doped-srmgal10o17-phosphor-in-glass-application-in-high-power-warm-w-leds
#19
Jiasong Zhong, Wei Xu, Qingli Chen, Shuo Yuan, Zhengguo Ji, Daqin Chen
Currently, the shortage of red components and easy aging of organic silicone still remain challenges for high-power phosphor-converted warm white light-emitting diodes (w-LEDs). Aiming to alleviate these issues, phosphor-in-glass (PiG), fabricated by co-sintering red- and yellow-emitting phosphors and low-melting glass, has been regarded as a promising color converter for w-LEDs. In this study, a Li(+),Mn(4+) co-doped SrMgAl10O17 red phosphor was synthesized via a conventional solid-state reaction. The as-prepared phosphor exhibits a deep red emission, ascribed to Mn(4+):(2)Eg → (4)A2g spin-forbidden transition in the range of 600-700 nm with a narrow-band full width at half maximum of 55 nm, and provides an ideal broadband excitation extending from 250 to 530 nm...
July 20, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28726713/a-comprehensive-study-on-adsorption-behavior-of-some-azo-dyes-from-aqueous-solution-onto-different-adsorbents
#20
Nihan Kaya
One of the major environmental problems is the existence of dye materials in water sources. This pollutant must be removed from water by appropriate methods. Although most of these methods are efficient for the treatment of waters contaminated with dye pollutants, they are very costly and commercially unattractive. Adsorption is one of the most popular methods for the removal of dye pollutants from water especially if the sorbent is inexpensive. Sorbents are classified as natural sorbents, commercial sorbents, and the sorbents obtained from industrial and agricultural wastes...
July 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
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