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https://www.readbyqxmd.com/read/28107618/carbon-hollow-microspheres-with-a-designable-mesoporous-shell-for-high-performance-electromagnetic-wave-absorption
#1
Hailong Xu, Xiaowei Yin, Meng Zhu, Meikang Han, Zexin Hou, Xinliang Li, Litong Zhang, Laifei Cheng
In this work, mesoporous carbon hollow microspheres (PCHMs) with designable mesoporous shell and interior void are constructed by a facile in situ stöber templating approach and a pyrolysis-etching process. The PCHMs are characterized by scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectra, Raman, nitrogen adsorption and desorption system. A uniform mesoporous shell (pore size 4.7 nm) with a thickness of 55 nm and a cavity size of 345 nm is realized. The composite of paraffin mixed with 20 wt...
January 20, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28077134/endoscopy-assisted-surgery-for-the-management-of-benign-breast-tumors-technique-learning-curve-and-patient-reported-outcome-from-preliminary-323-procedures
#2
Hung-Wen Lai, Hui-Yu Lin, Shu-Ling Chen, Shou-Tung Chen, Dar-Ren Chen, Shou-Jen Kuo
BACKGROUND: Endoscopy-assisted breast surgery (EABS), a technique that optimizes cosmetic outcome because it is performed through small wounds hidden in inconspicuous areas, could be an alternative surgical technique for benign breast tumors. In this study, we report the preliminary results of 323 EABS procedures performed at our institution for the management of benign breast tumors. METHODS: The medical records of patients who underwent EABS for benign breast lesions during the periods August 2010 to December 2015 were collected from the Changhua Christian Hospital EABS database...
January 11, 2017: World Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28034703/hybrid-treatment-expanding-the-armamentarium-for-infected-infrarenal-abdominal-aortic-and-iliac-aneurysms
#3
Kichang Han, Do Yun Lee, Man-Deuk Kim, Sak Lee, Jong Yun Won, Joon Ho Kwon, Donghoon Choi, Young-Guk Ko
PURPOSE: To investigate safety and efficacy of hybrid treatment for infected aortic and iliac aneurysms. MATERIALS AND METHODS: Between July 2007 and May 2011, hybrid treatment was performed in 6 male patients (mean age, 67.7 y; range, 57-76 y). Hybrid treatment consisted of extraanatomic bypass (EAB) and isolation of infected aneurysm with vascular plugs. Aneurysms were divided into primary and secondary infected aneurysms. Primary infected aneurysm refers to an aneurysm arising from bacterial infection of the native arterial wall; secondary infected aneurysm refers to infection involving an aneurysm that was previously treated with graft placement...
December 26, 2016: Journal of Vascular and Interventional Radiology: JVIR
https://www.readbyqxmd.com/read/27996090/eco-friendly-biorefractory-films-of-gelatin-and-tempo-oxidized-cellulose-ester-for-food-packaging-application
#4
Furong Tao Chen Zhuang, Yuezhi Cui
BACKGROUND: Recent years, many types of food packing films and composites have been prepared by using gelatin due to its good film-forming ability, non-toxic nature and cost-effective. However, the relatively weak thermal stability, poor mechanical properties and easily-degradable quality limit the potential application of gelatin as a practical material. Microcrystalline cellulose (MCC), as one of the most abundant biomass resources, has been regarded as safe and reliable food additives because the same ingredients with the cellulose of people's daily intake...
December 20, 2016: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/27987659/optimization-of-crosslinked-poly-vinyl-alcohol-nanocomposite-films-for-mechanical-properties
#5
Milad Rouhi, Seyed Hadi Razavi, Seyed Mohammad Mousavi
The effects of glycerol, bacterial cellulose nanocrystal (BCNC) and boric acid concentrations on the mechanical properties of PVA based films, including ultimate tensile strength (UTS), elongation at break (EAB), tensile Young's modulus (TYM), tensile toughness to break (TT), ultimate puncture strength (UPS), puncture deformation (PD), puncture Young's modulus (PYM) and puncture toughness to break (PT), were scrutinized using a response surface methodology-central composite rotatable design (RSM-CCRD). Second-order polynomial models with high R(2) values ranging from 0...
February 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/27877110/forward-genetic-screen-in-caenorhabditis-elegans-suggests-f57a10-2-and-acp-4-as-suppressors-of-c9orf72-related-phenotypes
#6
Xin Wang, Limin Hao, Taixiang Saur, Katelyn Joyal, Ying Zhao, Desheng Zhai, Jie Li, Mochtar Pribadi, Giovanni Coppola, Bruce M Cohen, Edgar A Buttner
An abnormally expanded GGGGCC repeat in C9ORF72 is the most frequent causal mutation associated with amyotrophic lateral sclerosis (ALS)/frontotemporal lobar degeneration (FTLD). Both gain-of-function (gf) and loss-of-function (lf) mechanisms have been involved in C9ORF72 related ALS/FTLD. The gf mechanism of C9ORF72 has been studied in various animal models but not in C. elegans. In the present study, we described mutant C9ORF72 modeling in C. elegans and report the finding of two suppressor genes. We made transgenes containing 9 or 29 repeats of GGGGCC in C9ORF72, driven by either the hsp-16 promoters or the unc-119 promoter...
2016: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/27869299/anaerobic-reduction-of-2-6-dinitrotoluene-by-shewanella-oneidensis-mr-1-roles-of-mtr-respiratory-pathway-and-nfnb
#7
Dong-Feng Liu, Di Min, Lei Cheng, Feng Zhang, Dao-Bo Li, Xiang Xiao, Guo-Ping Sheng, Han-Qing Yu
Dinitrotoluene (DNT) is a widely present pollutant in aquatic environments, and its biodegradation is an economically attractive way to effectively removal. In aquatic environments, the presence of electrochemically active bacteria (EAB) could contribute to the anaerobic bioreduction of DNT. However, the mechanism behind such a biodegradation process at gene level remains to be further elucidated. In this work, the anaerobic reduction of 2,6-dinitrotoluene (2,6-DNT) by Shewanella oneidensis MR-1, a typical EAB in aquatic environments, was investigated...
November 7, 2016: Biotechnology and Bioengineering
https://www.readbyqxmd.com/read/27835761/correlation-between-circuital-current-cu-ii-reduction-and-cellular-electron-transfer-in-eab-isolated-from-cu-ii-reduced-biocathodes-of-microbial-fuel-cells
#8
Jingya Shen, Liping Huang, Peng Zhou, Xie Quan, Gianluca Li Puma
The performance of four indigenous electrochemically active bacteria (EAB) (Stenotrophomonas maltophilia JY1, Citrobacter sp. JY3, Pseudomonas aeruginosa JY5 and Stenotrophomonas sp. JY6) was evaluated for Cu(II) reduction on the cathodes of microbial fuel cells (MFCs). These EAB were isolated from well adapted mixed cultures on the MFC cathodes operated for Cu(II) reduction. The relationship between circuital current, Cu(II) reduction rate, and cellular electron transfer processes was investigated from a mechanistic point of view using X-ray photoelectron spectroscopy, scanning electronic microscopy coupled with energy dispersive X-ray spectrometry, linear sweep voltammetry and cyclic voltammetry...
November 5, 2016: Bioelectrochemistry
https://www.readbyqxmd.com/read/27746780/recent-progress-toward-engineering-hiv-1-specific-neutralizing-monoclonal-antibodies
#9
Ming Sun, Yue Li, Huiwen Zheng, Yiming Shao
The recent discoveries of broadly potent neutralizing human monoclonal antibodies represent a new generation of antiretrovirals for the treatment and prophylaxis. Antibodies are generally considered more effective and safer and have been proved to provide passive protection against mucosal challenge in humanized mice and macaques. Several neutralizing Abs could protect animals against HIV-1 but are not effective when used in an established infected model for therapy. In order to overcome the limitation of antiviral activities, multiple antibody-engineering technologies have been explored to generate "the better" neutralizing antibodies against HIV-1 since bNAbs attack viral entry by various mechanisms...
2016: Frontiers in Immunology
https://www.readbyqxmd.com/read/27746664/national-human-research-ethics-a-preliminary-comparative-case-study-of-germany-great-britain-romania-and-sweden
#10
Bernard Gallagher, Anne H Berman, Justyna Bieganski, Adele D Jones, Liliana Foca, Ben Raikes, Johanna Schiratzki, Mirjam Urban, Sara Ullman
Although international research is increasing in volume and importance, there remains a dearth of knowledge on similarities and differences in "national human research ethics" (NHREs), that is, national ethical guidelines (NEGs), Institutional Review Boards (IRBs), and research stakeholder' ethical attitudes and behaviors (EABs). We begin to address this situation by reporting upon our experiences in conducting a multinational study into the mental health of children who had a parent/carer in prison. The study was conducted in 4 countries: Germany, Great Britain, Romania, and Sweden...
October 2, 2016: Ethics & Behavior
https://www.readbyqxmd.com/read/27645927/characterization-of-rice-starch-%C3%AE-carrageenan-biodegradable-edible-film-effect-of-stearic-acid-on-the-film-properties
#11
Rahul Thakur, Bahareh Saberi, Penta Pristijono, John Golding, Costas Stathopoulos, Christopher Scarlett, Michael Bowyer, Quan Vuong
The main aim of this study was to develop rice starch (RS), ι-carrageenan (ι-car) based film. Different formulations of RS (1-4%, w/w), ι-car (0.5-2%, w/w) was blended with stearic acid (SA; 0.3-0.9%, w/w) and glycerol (1%, w/w) as a plasticizer. The effect of film ingredients on the thickness, water vapour permeability (WVP), film solubility (FS), moisture content (MC), colour, film opacity (FO), tensile strength (TS), elongation-at-break (EAB) of film was examined. Interactions and miscibility of partaking components was studied by using Fourier transform infrared spectroscopy (FT-IR) and X-ray diffraction (XRD)...
December 2016: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/27609094/anodic-biofilms-as-the-interphase-for-electroactive-bacterial-growth-on-carbon-veil
#12
Kateryna Artyushkova, Dan Roizman, Carlo Santoro, Lucinda Elizabeth Doyle, Abeed Fatima Mohidin, Plamen Atanassov, Enrico Marsili
The structure and activity of electrochemically active biofilms (EABs) are usually investigated on flat electrodes. However, real world applications such as wastewater treatment and bioelectrosynthesis require tridimensional electrodes to increase surface area and facilitate EAB attachment. The structure and activity of thick EABs grown on high surface area electrodes are difficult to characterize with electrochemical and microscopy methods. Here, the authors adopt a stacked electrode configuration to simulate the high surface and the tridimensional structure of an electrode for large-scale EAB applications...
2016: Biointerphases
https://www.readbyqxmd.com/read/27589953/the-green-ash-transcriptome-and-identification-of-genes-responding-to-abiotic-and-biotic-stresses
#13
Thomas Lane, Teodora Best, Nicole Zembower, Jack Davitt, Nathan Henry, Yi Xu, Jennifer Koch, Haiying Liang, John McGraw, Stephan Schuster, Donghwan Shim, Mark V Coggeshall, John E Carlson, Margaret E Staton
BACKGROUND: To develop a set of transcriptome sequences to support research on environmental stress responses in green ash (Fraxinus pennsylvanica), we undertook deep RNA sequencing of green ash tissues under various stress treatments. The treatments, including emerald ash borer (EAB) feeding, heat, drought, cold and ozone, were selected to mimic the increasing threats of climate change and invasive pests faced by green ash across its native habitat. RESULTS: We report the generation and assembly of RNA sequences from 55 green ash samples into 107,611 putative unique transcripts (PUTs)...
2016: BMC Genomics
https://www.readbyqxmd.com/read/27580627/black-carbon-absorption-at-the-global-scale-is-affected-by-particle-scale-diversity-in-composition
#14
Laura Fierce, Tami C Bond, Susanne E Bauer, Francisco Mena, Nicole Riemer
Atmospheric black carbon (BC) exerts a strong, but uncertain, warming effect on the climate. BC that is coated with non-absorbing material absorbs more strongly than the same amount of BC in an uncoated particle, but the magnitude of this absorption enhancement (Eabs) is not well constrained. Modelling studies and laboratory measurements have found stronger absorption enhancement than has been observed in the atmosphere. Here, using a particle-resolved aerosol model to simulate diverse BC populations, we show that absorption is overestimated by as much as a factor of two if diversity is neglected and population-averaged composition is assumed across all BC-containing particles...
2016: Nature Communications
https://www.readbyqxmd.com/read/27561131/effect-of-incorporation-nanocrystalline-corn-straw-cellulose-and-polyethylene-glycol-on-properties-of-biodegradable-films
#15
Haitao Sun, Xinru Shao, Zhongsu Ma
This work aimed to study the effect of nanocrystalline corn straw cellulose (NCSC) and polyethylene glycol (PEG) on the properties of biodegradable corn distarch phosphate (CDP) films. The mechanical properties and barrier properties were investigated. Meanwhile, the compatibility, crystallization, thermal stability, and morphological structure of the films were characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (X-RD), thermogravimetric (TGA), and scanning electron microscopy (SEM)...
October 2016: Journal of Food Science
https://www.readbyqxmd.com/read/27541441/electroneutral-composite-polymersomes-self-assembled-by-amphiphilic-polyphosphazenes-for-effective-mir-200c-in%C3%A2-vivo-delivery-to-inhibit-drug-resistant-lung-cancer
#16
Yan Peng, Xiumei Zhu, Liyan Qiu
MiR-200c has been confirmed to display remarkable effects on proliferation inhibition and apoptosis induction of certain cancer cells, but the main challenge for its successful translation into the clinic remains its effective delivery to the action site in vivo. In this study, a novel composite polyphosphazene vesicle system composed of amphiphilic [NP(PEG)0.3(EAB)1.7]n (PEEP) and weakly cationic [NP(PEG)0.5(DPA)1.5]n (PEDP) was prepared via a very simple dialysis method. The loading of miR-200c was accomplished with high efficiency by taking advantage of the combination effect of physical encapsulation and electrostatic interaction between vectors and miR-200c...
November 2016: Biomaterials
https://www.readbyqxmd.com/read/27497547/lcao-based-theoretical-study-of-pbtio3-crystal-to-search-for-parity-and-time-reversal-violating-interaction-in-solids
#17
L V Skripnikov, A V Titov
An experiment towards the search for the interaction of the Schiff moment (S) of the (207)Pb nuclei with electrons in PbTiO3 crystal which violates the time reversal (T) and space parity (P) symmetries was proposed by Mukhamedjanov and Sushkov [Phys. Rev. A 72, 034501 (2005)]. The interpretation of the experiment in terms of the Schiff moment requires knowledge of an electronic density gradient parameter (usually designated as X) on the Pb nucleus in the crystal, which is determined by the electronic structure of the crystal...
August 7, 2016: Journal of Chemical Physics
https://www.readbyqxmd.com/read/27484881/higher-activities-of-defense-associated-enzymes-may-contribute-to-greater-resistance-of-manchurian-ash-to-emerald-ash-borer-than-a-closely-related-and-susceptible-congener
#18
Chad M Rigsby, Daniel A Herms, Pierluigi Bonello, Don Cipollini
Emerald ash borer (EAB) is an invasive beetle native to Asia that infests and kills ash (Fraxinus spp.) in North America. Previous experiments indicated that larvae feeding on co-evolved, resistant Manchurian ash (F. mandshurica) have increased antioxidant and quinone-protective enzyme activities compared to larvae feeding on susceptible North American species. Here, we examined mechanisms of host-generated oxidative and quinone-based stress and other putative defenses in Manchurian ash and the closely related and chemically similar, but susceptible, black ash (F...
August 2016: Journal of Chemical Ecology
https://www.readbyqxmd.com/read/27318589/plan-or-get-slam-ed-optimal-management-of-invasive-species-in-the-presence-of-indirect-health-externalities
#19
Benjamin A Jones, Shana M McDermott, Janie M Chermak
This paper examines invasive species management when invasive species impact health outcomes indirectly through changes to environmental quality. For example, the emerald ash borer (EAB) has destroyed millions of ash trees throughout North America and has the potential to impact rates of cardiorespiratory mortality and morbidity through ash trees' ability to capture airborne pollutants. Optimal management inclusive of indirect health externalities may be different than status quo plans because the links between nature and health are complex, dynamic, and spatially heterogeneous...
September 15, 2016: Journal of Environmental Management
https://www.readbyqxmd.com/read/27214753/electrochemical-surface-plasmon-resonance-fiber-optic-sensor-in-situ-detection-of-electroactive-biofilms
#20
Yong Yuan, Tuan Guo, Xuhui Qiu, Jiahuan Tang, Yunyun Huang, Li Zhuang, Shungui Zhou, Zhaohui Li, Bai-Ou Guan, Xuming Zhang, Jacques Albert
Spectroelectrochemistry has been found to be an efficient technique for revealing extracellular electron transfer (EET) mechanism of electroactive biofilms (EABs). Herein, we propose a novel electrochemical surface plasmon resonance (EC-SPR) optical fiber sensor for monitoring EABs in situ. The sensor uses a tilted fiber Bragg grating (TFBG) imprinted in a commercial single-mode fiber and coated with nanoscale gold film for high-efficiency SPR excitation. The wavelength shift of the surface plasmon resonance (SPR) over the fiber surface clearly identifies the electrochemical activity of the surface localized (adjacent to the electrode interface) bacterial cells in EABs, which differs from the "bulk" detections of the conventional electrochemical measurements...
August 2, 2016: Analytical Chemistry
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