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https://www.readbyqxmd.com/read/29347959/influence-of-schistosoma-japonicum-programmed-cell-death-protein-10-on-the-growth-and-development-of-schistosomula
#1
Yan Ru Gao, Wen Ling Huang, Chun Lian Tang, Rong Liu, Qin Ping Zhao, Zhen Ping Ming, Hui Fen Dong
BACKGROUND: Schistosomiasis caused by Schistosoma japonicum is among the most serious endemic zoonoses in China. To study interactions between schistosomula, the pre-adult juvenile stage, and hosts, it is important to study the functions of key genes involved in schistosomula growth and development. Programmed cell death protein 10 (pcdp10) is an important apoptosis-related gene with various biological functions. This study described the molecular characterization of S. japonicum PCDP10 (SjPCDP10) and evaluated its functions in schistosomula...
January 18, 2018: Parasites & Vectors
https://www.readbyqxmd.com/read/29347783/subjamming-transition-in-binary-sphere-mixtures
#2
Ishan Prasad, Christian Santangelo, Gregory Grason
We study the influence of particle-size asymmetry on structural evolution of randomly jammed binary sphere mixtures with varying large-sphere and small-sphere composition. Simulations of jammed packings are used to assess the transition from large-sphere dominant to small-sphere dominant mixtures. For weakly asymmetric particle sizes, packing properties evolve smoothly, but not monotonically, with increasing small-sphere composition, f. Our simulations reveal that at high values of ratio α of large- to small-sphere radii (α≥α_{c}≈5...
November 2017: Physical Review. E
https://www.readbyqxmd.com/read/29347368/three-scale-analysis-of-the-permeability-of-a-natural-shale
#3
C A Davy, P M Adler
The macroscopic permeability of a natural shale is determined by using structural measurements on three different scales. Transmission electron microscopy yields two-dimensional (2D) images with pixels smaller than 1 nm; these images are used to reconstruct 3D nanostructures. Three-dimensional focused ion beam-scanning electron microscopy (5.95- to 8.48-nm voxel size) provides 3D mesoscale pores of limited relative volume (1.71-5.9%). Micro-computed tomography (700-nm voxel size) provides information on the mineralogy of the shale, including the pores on this scale which do not percolate; synthetic 3D media are derived on the macroscopic scale by a training image technique...
December 2017: Physical Review. E
https://www.readbyqxmd.com/read/29346387/inferring-the-risk-factors-behind-the-geographical-spread-and-transmission-of-zika-in-the-americas
#4
Lauren M Gardner, András Bóta, Karthik Gangavarapu, Moritz U G Kraemer, Nathan D Grubaugh
BACKGROUND: An unprecedented Zika virus epidemic occurred in the Americas during 2015-2016. The size of the epidemic in conjunction with newly recognized health risks associated with the virus attracted significant attention across the research community. Our study complements several recent studies which have mapped epidemiological elements of Zika, by introducing a newly proposed methodology to simultaneously estimate the contribution of various risk factors for geographic spread resulting in local transmission and to compute the risk of spread (or re-introductions) between each pair of regions...
January 18, 2018: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29344913/cardiac-basal-autophagic-activity-and-increased-exercise-capacity
#5
Fang-Hui Li, Tao Li, Ying-Min Su, Jing-Yi Ai, Rui Duan, Timon Cheng-Yi Liu
To investigate whether high-intensity interval training (HIIT) and continuous moderate-intensity training (CMT) have different impacts on exercise performance and cardiac function and to determine the influence of these exercise protocols on modulating basal autophagy in the cardiac muscle of rats. Rats were assigned to three groups: sedentary control (SC), CMT, and HIIT. Total exercise volume and mean intensity were matched between the two protocols. After a 10-week training program, rats were evaluated for exercise performance, including exercise tolerance and grip strength...
January 17, 2018: Journal of Physiological Sciences: JPS
https://www.readbyqxmd.com/read/29344299/enhanced-synergism-of-thermo-chemotherapy-for-liver-cancer-with-magnetothermally-responsive-nanocarriers
#6
Minghua Li, Wenbo Bu, Jie Ren, Jianbo Li, Li Deng, Mingyuan Gao, Xiaolong Gao, Peijun Wang
A combination of magnetic hyperthermia and magnetothermally-facilitated drug release system was developed as a promising strategy for liver cancer therapy. The thermosensitive copolymer, 6sPCL-b-P(MEO2MA-co-OEGMA) shows a good temperature-controlled drug release response. Mn-Zn ferrite magnetic nanoparticles (MZF-MNPs) exhibit a strong magnetic thermal effect with an alternating magnetic field (AMF). Owing to its high magnetic sensitivity, the magnetothermally-responsive nanocarrier/doxorubicin (MTRN/DOX) can be concentrated in the tumor site efficiently through magnetic targeting...
2018: Theranostics
https://www.readbyqxmd.com/read/29344098/-time-to-clean-a-systematic-review-and-observational-study-on-the-time-required-to-clean-items-of-reusable-communal-patient-care-equipment
#7
David Scott, Hayley Kane, Annette Rankin
Background: Concerns have been raised over poor standards of hospital cleanliness and insufficient time for staff to clean reusable communal patient care equipment. These items may then act as vectors for the transmission of nosocomial pathogens between hospital patients. Aim: To evaluate the impact of cleaning duration on nosocomial infection rates and estimate the time required to clean care equipment in accordance with national specifications (i.e. a 'time to clean')...
November 2017: Journal of Infection Prevention
https://www.readbyqxmd.com/read/29338198/atomic-resolution-imaging-of-nanoscale-chemical-expansion-in-prxce1-xo2-%C3%AE-during-in-situ-heating
#8
Jessica G Swallow, Ja Kyung Lee, Thomas Defferriere, Gareth Martin Hughes, Shilpa N Raja, Harry L Tuller, Jamie H Warner, Krystyn J Van Vliet
Thin film non-stoichiometric oxides enable many high temperature applications including solid oxide fuel cells, actuators, and catalysis. Large concentrations of point defects (particularly, oxygen vacancies) enable fast ionic conductivity or gas exchange kinetics in these materials, but also manifest as coupling between lattice volume and chemical composition. This chemical expansion may be either detrimental or useful, especially in thin film devices that may exhibit enhanced performance through strain engineering or decreased operating temperatures...
January 16, 2018: ACS Nano
https://www.readbyqxmd.com/read/29338180/hollow-echinus-like-pdcuco-alloy-for-superior-efficient-catalysis-of-ethanol
#9
Yalan Shu, Xiaoqin Shi, Yuanyuan Ji, Ying Wen, Xiaoyu Guo, Ye Ying, Yiping Wu, Hai-Feng Yang
Large-scale preparation of hollow echinus-like PdCuCo alloy nanostructures with high surface area-to-volume ratio, rich active sites and relatively efficient catalytic activity have attracted considerable research interest. Herein, we present an economic and facile approach to synthesize hollow echinus-like PdCuCo alloy nanostructures (HENSs) by galvanic exchange reactions using Co nanospheres as sacrificial templates. Moreover, the catalytic activity could be adjusted via changing the composition of catalyst...
January 17, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29337622/isolation-of-avipoxvirus-from-tongue-of-canaries-serinus-canaria-show-severe-localized-proliferative-glossitis
#10
Salvatore Catania, Silvia Carnaccini, Marta Mainenti, Maria Luisa Moronato, Federica Gobbo, Terregino Calogero
Poxvirus was the causative agent of two unusual outbreaks of proliferative glossitis in canary ( Serinus canaria forma domestica) breeders in the Northern Italy. A total of 45, 7-9-mo-old canaries were submitted in fair postmortem conditions to the Istituto Zooprofilattico Sperimentale delle Venezie at the beginning of November 2005 for diagnostic investigation. Birds belonged to two unrelated and geographically distant aviaries in northern Italy, herein identified as Aviary A and Aviary B. The two breeder flocks had both attended the same bird exposition held at the beginning of October and started experiencing an onset of high mortality 3 wk after the show...
December 2017: Avian Diseases
https://www.readbyqxmd.com/read/29334973/options-for-reducing-hiv-transmission-related-to-the-dead-space-in-needles-and-syringes
#11
William A Zule, Poonam G Pande, David Otiashvili, Georgiy V Bobashev, Samuel R Friedman, V Anna Gyarmathy, Don C Des Jarlais
BACKGROUND: When shared by people who inject drugs, needles and syringes with different dead space may affect the probability of HIV and hepatitis C virus (HCV) transmission differently. METHODS: We measured dead space in 56 needle and syringe combinations obtained from needle and syringe programs across 17 countries in Europe and Asia. We also calculated the amounts of blood and HIV that would remain in different combinations following injection and rinsing. RESULTS: Syringe barrel capacities ranged from 0...
January 15, 2018: Harm Reduction Journal
https://www.readbyqxmd.com/read/29328549/synthesis-of-polydopamine-functionalized-magnetic-graphene-and-carbon-nanotubes-hybrid-nanocomposites-as-an-adsorbent-for-the-fast-determination-of-16-priority-polycyclic-aromatic-hydrocarbons-in-aqueous-samples
#12
Kun Chen, Rongrong Jin, Chen Luo, Guoxin Song, Yaoming Hu, Hefa Cheng
A novel adsorbent made of polydopamine-functionalized magnetic graphene and carbon nanotubes hybrid nanocomposite was synthesized and applied in the determination of 16 priority polycyclic aromatic hydrocarbons by magnetic solid phase extraction in water samples. FTIR spectroscopy, transmission electron microscopy, scanning electron microscopy, and Raman spectroscopy consistently indicate that the synthesized adsorbents are made of core-shell nanoparticles well dispersed on the surface of graphene and carbon nanotubes...
January 12, 2018: Journal of Separation Science
https://www.readbyqxmd.com/read/29328158/volume-holographic-spatial-mode-demultiplexer-with-a-dual-wavelength-method
#13
Shimpei Shimizu, Atsushi Okamoto, Fumiya Mizukawa, Kazuhisa Ogawa, Akihisa Tomita, Taketoshi Takahata, Satoshi Shinada, Naoya Wada
Volume holographic demultiplexers (VHDMs) provide spatial mode demultiplexing using simple optical systems. However, applying VHDM to practical optical communication systems is difficult, as typical holographic media have no sensitivity in the infrared region, which includes optical transmission bands. In this paper, we propose a VHDM scheme combined with a dual-wavelength method (DWM). Using the DWM, VHDMs are able to perform mode demultiplexing in the optical transmission bands. We experimentally demonstrated the basic operation of our proposal using experiments performed at an 850-nm wavelength...
January 10, 2018: Applied Optics
https://www.readbyqxmd.com/read/29328047/optimal-multichannel-transmission-for-improved-cr-mrept
#14
Gokhan Ariturk, Yusuf Ziya Ider
Magnetic resonance electrical properties tomography (MR-EPT), aiming at reconstructing the EP's at radio frequencies, uses the H<sup>+</sup> field (both magnitude and phase) distribution within the object. One of the MR-EPT algorithms, cr-MREPT, accurately reconstructs the internal tissue boundaries however it faces an artifact which occurs at the regions where the convective field, [ (∂H<sup>+</sup> / ∂x ) - i(∂H<sup>+</sup> / ∂y) i((∂H<sup>+</sup> / ∂x ) - i(∂H<sup>+</sup> / ∂y)) ] , has a low magnitude (at the noise level)...
January 12, 2018: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/29325131/crystal-structures-of-high-pressure-phases-formed-in-si-by-laser-irradiation
#15
Hiroyuki Iwata, Daisuke Kawaguchi, Hiroyasu Saka
Internal modification induced in Si by a permeable pulse laser was investigated by transmission electron microscopy. A laser induced modified volume (LIMV) was a cylindrical rod along the track of a laser beam with the head at the focus of the laser beam. In the LIMV, beside voids, dislocations, micro-cracks and what had been supposed to be an unidentified high-pressure phase (hpp) of Si were observed in LIMV. The so-called 'hpp' was identified mostly as diamond Si.
January 6, 2018: Microscopy
https://www.readbyqxmd.com/read/29323499/nanometer-resolution-elemental-mapping-in-graphene-based-tem-liquid-cells
#16
Daniel J Kelly, Mingwei Zhou, Nick Clark, Matthew J Hamer, Edward A Lewis, Alexander M Rakowski, Sarah J Haigh, Roman V Gorbachev
We demonstrate a new design of graphene liquid cell consisting of a thin lithographically patterned hexagonal boron nitride crystal encapsulated on both sides with graphene windows. The ultrathin window liquid cells produced have precisely controlled volumes and thicknesses and are robust to repeated vacuum cycling. This technology enables exciting new opportunities for liquid cell studies, providing a reliable platform for high resolution transmission electron microscope imaging and spectral mapping. The presence of water was confirmed using electron energy loss spectroscopy (EELS) via the detection of the oxygen K-edge and measuring the thickness of full and empty cells...
January 11, 2018: Nano Letters
https://www.readbyqxmd.com/read/29322056/field-evaluation-of-outdoor-ultra-low-volume-ulv-applications-against-phlebotomine-sand-flies-diptera-psychodidae-in-al-rabta-north-west-of-libya
#17
Mostafa Ramahdan Dokhan, Mohamed Amin Kenawy, Taher Shaibi, Badereddin Bashir Annajar
Background: Al Rabta is a rural area in the North-West of Libya that represents an important focus of zoonotic cutaneous leishmaniasis. This study aimed to evaluate the effect of Ultra Low Volume (ULV) applications in controlling sand flies and its impact on leishmaniasis transmission in this area. Methods: Two neighboring villages were selected: Al Rabta West (RW) as cypermethrin treated village and Al Rabta East (RE) as check one. The ULV was evaluated through 3 spraying cycles during Apr, Jun and Sep 2013...
September 2017: Journal of Arthropod-borne Diseases
https://www.readbyqxmd.com/read/29321267/extreme-call-amplitude-from-near-field-acoustic-wave-coupling-in-the-stridulating-water-insect-micronecta-scholtzi-micronectinae
#18
Andrew Reid, David J W Hardie, David Mackie, Joseph C Jackson, James F C Windmill
Underwater acoustic transducers, particularly at low frequencies, are beset by problems of scale and inefficiency due to the large wavelengths of sound in water. In insect mating calls, a high call volume is usually desirable, increasing the range of signal transmission and providing a form of advertisement of the signaller's quality to a potential mate; however, the strength of the call is constrained by body size and by the need to avoid predators who may be listening in. Male crickets and water boatmen avoid some of the limitations of body size by exploiting resonant structures, which produce sharply tuned species-specific songs, but call frequency and volume remain linked to body size...
January 2018: Journal of the Royal Society, Interface
https://www.readbyqxmd.com/read/29317580/-effect-of-high-intensity-alternating-magnetic-field-%C3%A2-on-viscosity-of-sheep-blood
#19
Pengxian Tao, Xiangyang Wu, Lingzhi Zhao, Feng Wang, Qi Xia, Yan Peng, Bingren Gao
To explore the changes of blood viscosity in high-intensity alternating magnetic field and the mechanisms.
 Methods: Five adult sheep were randomly selected and the blood samples were placed in high-intensity alternating magnetic field. Before and after exposure, the blood samples were taken and divided into 2 groups: a control group and a magnetic field group. The blood rheology and transmission electron microscopy (TEM) were performed.
 Results: Compared to the control group, the high shear viscosity of whole blood was decreased in the magnetic field group (P<0...
December 28, 2017: Zhong Nan da Xue Xue Bao. Yi Xue Ban, Journal of Central South University. Medical Sciences
https://www.readbyqxmd.com/read/29317351/a-new-physiological-model-for-studying-the-effect-of-chest-compression-and-ventilation-during-cardiopulmonary-resuscitation-the-thiel-cadaver
#20
Emmanuel Charbonney, Stéphane Delisle, Dominique Savary, Gilles Bronchti, Marceau Rigollot, Adrien Drouet, Bilal Badat, Paul Ouellet, Patrice Gosselin, Alain Mercat, Laurent Brochard, Jean-Christophe M Richard
BACKGROUND: Studying ventilation and intrathoracic pressure (ITP) induced by chest compressions (CC) during Cardio Pulmonary Resuscitation is challenging and important aspects such as airway closure have been mostly ignored. We hypothesized that Thiel Embalmed Cadavers could constitute an appropriate model. METHODS: We assessed respiratory mechanics and ITP during CC in 11 cadavers, and we compared it to measurements obtained in 9 out-of-hospital cardiac arrest patients and to predicted values from a bench model...
January 6, 2018: Resuscitation
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