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https://www.readbyqxmd.com/read/28647473/-rotavirus-salmonella-coinfection-due-to-turtles-two-cases-with-exotic-pets
#1
M Angot, F Labbe, A Duquenoy, P Le Roux
Salmonellosis is a leading cause of bacterial gastroenteritis, responsible for invasive infections especially in young children. Reptiles are salmonella reservoirs, and the indirect contact via parents' hands may be responsible for contamination. We report on two cases of Salmonella-rotavirus coinfection secondary to the presence of turtles in the home.
June 21, 2017: Archives de Pédiatrie: Organe Officiel de la Sociéte Française de Pédiatrie
https://www.readbyqxmd.com/read/28646189/heterogeneous-environments-shape-invader-impacts-integrating-environmental-structural-and-functional-effects-by-isoscapes-and-remote-sensing
#2
Christine Hellmann, André Große-Stoltenberg, Jan Thiele, Jens Oldeland, Christiane Werner
Spatial heterogeneity of ecosystems crucially influences plant performance, while in return plant feedbacks on their environment may increase heterogeneous patterns. This is of particular relevance for exotic plant invaders that transform native ecosystems, yet, approaches integrating geospatial information of environmental heterogeneity and plant-plant interaction are lacking. Here, we combined remotely sensed information of site topography and vegetation cover with a functional tracer of the N cycle, δ(15)N...
June 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28644474/%C3%AF-electron-s%C3%A2-%C3%A2-%C3%A2-quantum-spin-liquid-state-in-an-ionic-polyaromatic-hydrocarbon
#3
Yasuhiro Takabayashi, Melita Menelaou, Hiroyuki Tamura, Nayuta Takemori, Takashi Koretsune, Aleš Štefančič, Gyöngyi Klupp, A Johan C Buurma, Yusuke Nomura, Ryotaro Arita, Denis Arčon, Matthew J Rosseinsky, Kosmas Prassides
Molecular solids with cooperative electronic properties based purely on π electrons from carbon atoms offer a fertile ground in the search for exotic states of matter, including unconventional superconductivity and quantum magnetism. The field was ignited by reports of high-temperature superconductivity in materials obtained by the reaction of alkali metals with polyaromatic hydrocarbons, such as phenanthrene and picene, but the composition and structure of any compound in this family remained unknown. Here we isolate the binary caesium salts of phenanthrene, Cs(C14H10) and Cs2(C14H10), to show that they are multiorbital strongly correlated Mott insulators...
July 2017: Nature Chemistry
https://www.readbyqxmd.com/read/28641229/effects-of-short-term-invasion-of-spartina-alterniflora-and-the-subsequent-restoration-of-native-mangroves-on-the-soil-organic-carbon-nitrogen-and-phosphorus-stock
#4
Jianxiang Feng, Jian Zhou, Liming Wang, Xiaowei Cui, Cunxin Ning, Hao Wu, Xiaoshan Zhu, Guanghui Lin
The exotic cordgrass Spartina alterniflora has severely invaded the mangrove wetlands in southern China and ecological restoration using native mangroves was conducted in an attempt to control this invasive species. In this study, the contents and pools of soil organic carbon (SOC), total nitrogen (TN) and total phosphorus (TP) were quantified to investigate the invasive effects of S. alterniflora and then to evaluate whether the ecological restoration of native mangrove could reverse those effects. S. alterniflora only showed significantly higher organic carbon content in the surface 0-10 cm of soil than in the uninvaded mudflat...
June 15, 2017: Chemosphere
https://www.readbyqxmd.com/read/28640532/nonvolatile-perovskite-based-photomemory-with-a-multilevel-memory-behavior
#5
Jung-Yao Chen, Yu-Cheng Chiu, Yen-Ting Li, Chu-Chen Chueh, Wen-Chang Chen
Solution-processable organic-inorganic hybrid perovskite materials with a wealth of exotic semiconducting properties have appeared as the promising front-runners for next-generation electronic devices. Further, regarding its well photoresponsibility, various perovskite-based photosensing devices are prosperously developed in recent years. However, most exploited devices to date only transiently transduce the optical signals into electrical circuits while under illumination, which necessitates using additional converters to further store the output signals for recording the occurrence of light stimulation...
June 22, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28640388/electrostatic-driven-exfoliation-and-hybridization-of-2d-nanomaterials
#6
Guijian Guan, Jing Xia, Shuhua Liu, Yuan Cheng, Shiqiang Bai, Si Yin Tee, Yong-Wei Zhang, Ming-Yong Han
Here, direct and effective electrostatic-driven exfoliation of tungsten trioxide (WO3 ) powder into atomically thin WO3 nanosheets is demonstrated for the first time. Experimental evidence together with theoretical simulations clearly reveal that the strong binding of bovine serum albumin (BSA) on the surface of WO3 via the protonation of NH2 groups in acidic conditions leads to the effective exfoliation of WO3 nanosheets under sonication. The exfoliated WO3 nanosheets have a greatly improved dispersity and stability due to surface-protective function of BSA, and exhibit a better performance and unique advantages in applications such as visible-light-driven photocatalysis, high-capacity adsorption, and fast electrochromics...
June 22, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28640260/microscopy-of-the-interacting-harper-hofstadter-model-in-the-two-body-limit
#7
M Eric Tai, Alexander Lukin, Matthew Rispoli, Robert Schittko, Tim Menke, Dan Borgnia, Philipp M Preiss, Fabian Grusdt, Adam M Kaufman, Markus Greiner
The interplay between magnetic fields and interacting particles can lead to exotic phases of matter that exhibit topological order and high degrees of spatial entanglement. Although these phases were discovered in a solid-state setting, recent innovations in systems of ultracold neutral atoms-uncharged atoms that do not naturally experience a Lorentz force-allow the synthesis of artificial magnetic, or gauge, fields. This experimental platform holds promise for exploring exotic physics in fractional quantum Hall systems, owing to the microscopic control and precision that is achievable in cold-atom systems...
June 21, 2017: Nature
https://www.readbyqxmd.com/read/28634296/1t-tas2-as-a-quantum-spin-liquid
#8
K T Law, Patrick A Lee
1T-TaS2 is unique among transition metal dichalcogenides in that it is understood to be a correlation-driven insulator, where the unpaired electron in a 13-site cluster experiences enough correlation to form a Mott insulator. We argue, based on existing data, that this well-known material should be considered as a quantum spin liquid, either a fully gapped [Formula: see text] spin liquid or a Dirac spin liquid. We discuss the exotic states that emerge upon doping and propose further experimental probes.
June 20, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28633020/apoptosis-and-compensatory-proliferation-signaling-are-coupled-by-crki-containing-microvesicles
#9
Kajal H Gupta, Josef W Goldufsky, Stephen J Wood, Nicholas J Tardi, Gayathri S Moorthy, Douglas Z Gilbert, Janet P Zayas, Eunsil Hahm, Mehmet M Altintas, Jochen Reiser, Sasha H Shafikhani
Apoptosis has been implicated in compensatory proliferation signaling (CPS), whereby dying cells induce proliferation in neighboring cells as a means to restore homeostasis. The nature of signaling between apoptotic cells and their neighboring cells remains largely unknown. Here we show that a fraction of apoptotic cells produce and release CrkI-containing microvesicles (distinct from exosomes and apoptotic bodies), which induce proliferation in neighboring cells upon contact. We provide visual evidence of CPS by videomicroscopy...
June 19, 2017: Developmental Cell
https://www.readbyqxmd.com/read/28631485/suppression-of-magnetoresistance-in-thin-wte2-flakes-by-surface-oxidation
#10
John M Woods, Jie Shen, Piranavan Kumaravadivel, Yuan Pang, Yujun Xie, Grace A Pan, Min Li, Eric I Altman, Li Lu, Judy J Cha
Recent renewed interest in layered transition metal dichalcogenides stems from the exotic electronic phases predicted and observed in the single- and few-layer limit. Realizing these electronic phases requires preserving the desired transport properties down to a monolayer, which is challenging. Surface oxides are known to impart Fermi level pinning or degrade the mobility on a number of different systems, including transition metal dichalcogenides and black phosphorus. Semimetallic WTe2 exhibits large magnetoresistance due to electron-hole compensation, thus Fermi level pinning in thin WTe2 flakes could break the electron-hole balance and suppress the large magnetoresistance...
June 20, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28629177/exnotic-should-we-be-keeping-exotic-pets
#11
Rachel A Grant, V Tamara Montrose, Alison P Wills
There has been a recent trend towards keeping non-traditional companion animals, also known as exotic pets. These pets include parrots, reptiles, amphibians and rabbits, as well as small species of rodent such as degus and guinea pigs. Many of these exotic pet species are not domesticated, and often have special requirements in captivity, which many owners do not have the facilities or knowledge to provide. Keeping animals in settings to which they are poorly adapted is a threat to their welfare. Additionally, owner satisfaction with the animal may be poor due to a misalignment of expectations, which further impacts on welfare, as it may lead to repeated rehoming or neglect...
June 19, 2017: Animals: An Open Access Journal From MDPI
https://www.readbyqxmd.com/read/28621987/photoassociation-of-trilobite-rydberg-molecules-via-resonant-spin-orbit-coupling
#12
K S Kleinbach, F Meinert, F Engel, W J Kwon, R Löw, T Pfau, G Raithel
We report on a novel method for the photoassociation of strongly polar trilobite Rydberg molecules. This exotic ultralong-range dimer, consisting of a ground-state atom bound to the Rydberg electron via electron-neutral scattering, inherits its polar character from the admixture of high-angular-momentum electronic orbitals. The absence of low-L character hinders standard photoassociation techniques. Here, we show that for suitable principal quantum numbers the resonant coupling of the orbital motion with the nuclear spin of the perturber, mediated by electron-neutral scattering, hybridizes the trilobite molecular potential with the more conventional S-type molecular state...
June 2, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28621976/dark-vibronic-polaritons-and-the-spectroscopy-of-organic-microcavities
#13
Felipe Herrera, Frank C Spano
Organic microcavities are photonic nanostructures that strongly confine the electromagnetic field, allowing exotic quantum regimes of light-matter interaction with disordered organic semiconductors. The unambiguous interpretation of the spectra of organic microcavities has been a long-standing challenge due to several competing effects involving electrons, vibrations, and cavity photons. Here we present a theoretical framework that is able to describe the main spectroscopic features of organic microcavities consistently...
June 2, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28621307/bending-strain-engineering-in-quantum-spin-hall-system-for-controlling-spin-currents
#14
Bing Huang, Kyung-Hwan Jin, Bin Cui, Feng Zhai, Jiawei Mei, Feng Liu
Quantum spin Hall system can exhibit exotic spin transport phenomena, mediated by its topological edge states. Here the concept of bending strain engineering to tune the spin transport properties of a quantum spin Hall system is demonstrated. We show that bending strain can be used to control the spin orientation of counter-propagating edge states of a quantum spin system to generate a non-zero spin current. This physics mechanism can be applied to effectively tune the spin current and pure spin current decoupled from charge current in a quantum spin Hall system by control of its bending curvature...
June 16, 2017: Nature Communications
https://www.readbyqxmd.com/read/28620257/comparison-of-milk-production-and-milk-composition-for-an-exotic-and-a-local-synthetic-rabbit-lines
#15
Karim El-Sabrout, Sarah Aggag, Alaa El-Raffa
AIM: Basic objective of this research was to compare two rabbit lines: V-line (exotic line), Alexandria (local synthetic line) for yield and composition of milk product and their effect on productive performance of rabbits. MATERIALS AND METHODS: The experiment was conducted on 80 does and their kits. Milk yield (MY) of each doe and milk composition (MC) were recorded at 3(rd) week of lactation. RESULTS: The results of MY showed insignificant difference between V-line and Alexandria line...
May 2017: Veterinary World
https://www.readbyqxmd.com/read/28616473/ten-years-of-the-tiger-aedes-albopictus-presence-in-australia-since-its-discovery-in-the-torres-strait-in-2005
#16
REVIEW
Andrew F van den Hurk, Jay Nicholson, Nigel W Beebe, Joe Davis, Odwell M Muzari, Richard C Russell, Gregor J Devine, Scott A Ritchie
The "Asian tiger mosquito", Aedes albopictus, is highly invasive, an aggressive biter and a major arbovirus vector. It is not currently present on mainland Australia despite being intercepted on numerous occasions at international ports and infesting the Torres Strait of Australia since at least 2004. In the current paper, we describe the invasion and current status of Ae. albopictus in the Torres Strait, as well as research conducted to assess the threat of this species becoming established in arbovirus transmission cycles on the Australian mainland...
December 2016: One Health
https://www.readbyqxmd.com/read/28616187/ecological-effects-of-dams-alien-fish-and-physiochemical-environmental-factors-on-homogeneity-heterogeneity-of-fish-community-in-four-tributaries-of-the-pearl-river-in-china
#17
Lei Zeng, Lei Zhou, Ding-Li Guo, Dong-Hua Fu, Peng Xu, Shuang Zeng, Qin-Dong Tang, An-Luo Chen, Fei-Qiao Chen, Yong Luo, Gui-Feng Li
In this study, we aimed to characterize the fish community structure and identify the drivers contributing to homogenization/differentiation processes in four tributaries to the Pearl River, Guangxi Province, China, over the past few decades. We sampled 22 sites seasonally from 2013 through 2015, and these sites were selected based on archived records of previous sampling conducted in the 1980s. Jaccard's faunal similarity index, cluster analysis, and canonical correspondence analysis (CCA) were applied to describe the homogenization/differentiation of fish community and illustrate the potential effectors...
June 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28615919/sequence-analysis-and-phylogenetic-studies-of-hypoxia-inducible-factor-1%C3%AE
#18
Jagadeesha Poyya, Chandrashekhar G Joshi, D Jagadeesha Kumar, H G Nagendra
Hypoxia-inducible factors (HIF) belong to the basic helix loop helix-PER ARNT SIM (bHLH-PAS) family of transcription factors that induce metabolic reprogramming under hypoxic condition. The phylogenetic studies of hypoxia-inducible factor-1α (HIF-1α) sequences across different organisms/species may leave a clue on the evolutionary relationships and its probable correlation to tumorigenesis and adaptation to low oxygen environments. In this study, we have aimed at the evolutionary investigation of the protein HIF-1α across different species to decipher their sequence variations/mutations and look into the probable causes and abnormal behaviour of this molecule under exotic conditions...
2017: Cancer Informatics
https://www.readbyqxmd.com/read/28614358/livestock-grazing-supports-native-plants-and-songbirds-in-a-california-annual-grassland
#19
Sasha Gennet, Erica Spotswood, Michele Hammond, James W Bartolome
Over eight years we measured the effects of plant community composition, vegetation structure, and livestock grazing on occurrence of three grassland bird species-Western Meadowlark (Sturnella neglecta), Horned Lark (Eremophila alpestris), and Grasshopper Sparrow (Ammodramus savannarum)-at sites in central California during breeding season. In California's Mediterranean-type climatic region, coastal and inland grassland vegetation is dominated by exotic annual grasses with occasional patches of native bunchgrass and forbs...
2017: PloS One
https://www.readbyqxmd.com/read/28612869/intrinsic-ferromagnetism-and-quantum-transport-transition-in-individual-fe-doped-bi2se3-topological-insulator-nanowires
#20
Wei Niu, Kai Du, Shuangbao Wang, Minhao Zhang, Ming Gao, Yongda Chen, Hao Liu, Wei Zhou, Fengqi Song, Peng Wang, Yongbing Xu, Xuefeng Wang, Jian Shen, Rong Zhang
Time-reversal symmetry is broken by magnetic doping in topological insulators (TIs). An energy gap at the Dirac point opens and thus, generates numerous surface carriers. TI nanostructures are an ideal platform to investigate exotic surface transport behavior due to their large surface-to-volume ratio, which enhances the contribution of the TI surface states. However, magnetic doping into TI nanostructures has been challenging, and induced magnetic behavior has remained elusive. Herein, we have synthesized Fe-doped Bi2Se3 nanowires using a facile chemical vapor deposition with a doping concentration of ∼1 at%...
June 14, 2017: Nanoscale
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