Sodium Oleate Increases c in Methylophilus quaylei Biofilms on Teflon and Polypropylene.

Conclusion: The study demonstrates that sodium oleate has a promoting activity against planktonic growth of M. quaylei strains and has a slight inhibitory effect on biofilm. Addition of sodium oleate enhances the bactericidal effect of ampicillin against biofilm cells. Combination of ampicillin 0.1 mg/ml (MIC) and sodium oleate 0.03 mg/ml showed a remarkable destruction effect on established biofilms. Overall, results indicated that sodium oleate in combination with ampicillin enhances the inhibition of M. quaylei biofilms and this combination can be utilized for combating bacterial biofilm resistance. PMID: 30806309 [PubMed - as supplied by publisher]
Source: Current Pharmaceutical Biotechnology - Category: Biotechnology Authors: Tags: Curr Pharm Biotechnol Source Type: research

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In this study, we identified a novel antibacterial peptide, RIVELTLPRVSVRL-NH2 (named CF-14), derived from the epidermal mucus of catfish and characterized its antimicrobial activity. Analysis of antimicrobial activity and hemolytic activity of CF-14 revealed broad spectrum, high levels of antimicrobial activity and low toxicity to eukaryotic cells. CF-14 remained stable at pH values ranging from 4.0 to 12.0 and remained bioactive when exposed to high temperature. CD analysis indicated that CF-14 forms a random coil in PBS buffer and an α-helical conformation in the membrane-mimetic 2.5% SDS micelle. Additionally, th...
Source: Fish and Shellfish Immunology - Category: Biology Source Type: research
Publication date: 15 October 2019Source: Journal of Non-Crystalline Solids, Volume 522Author(s): G.M. Aparicio, R.A. Vargas, P.R. BuenoAbstractNanocomposite polymer membranes based on PVA/TiO2 were prepared by a solution casting method. Glutaraldehyde solution (GA) was used as linking agent to improve the chemical, thermal and physical properties of the membranes. The degree of cross-linking was varied by changing the reaction time. The phase behavior of the membranes was examined by thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). High resolution SEM micrographs show that the TiO2 nanoparticle...
Source: Journal of Non Crystalline Solids - Category: Chemistry Source Type: research
Publication date: Available online 13 July 2019Source: Journal of Environmental Chemical EngineeringAuthor(s): María Laura Godoy, Ezequiel David Banús, Eduardo Ernesto Miró, Viviana Guadalupe MiltAbstractStacked stainless steel wire mesh monoliths were developed as supports for Pt/Co,Ce catalysts for diesel exhaust treatment. After the calcination of the metal structures at 900 °C, a Co,Ce layer was deposited over the meshes by means of an equimolar suspension of Co3O4 and CeO2 nanoparticles, followed by the incorporation of 1 wt.% Pt. Also, a double bed catalyst configuration was studied...
Source: Journal of Environmental Chemical Engineering - Category: Chemistry Source Type: research
Publication date: Available online 13 July 2019Source: Journal of Analytical and Applied PyrolysisAuthor(s): Dingcheng Liang, Qiang Xie, Zheng Wei, Chaoran Wan, Guangsheng Li, Junya CaoAbstractThe transformation of alkali and alkaline earth metals (AAEMs) in Zhundong coal during pyrolysis in an entrained flow bed reactor was elucidated, which provides theoretical guidance for selecting suitable processing technology for Zhundong coal. A typical coal was sampled, and a series of pyrolysis experiments with gradual and small increments in temperature was performed using an entrained flow bed reactor. Chars from pyrolysis at d...
Source: Journal of Analytical and Applied Pyrolysis - Category: Chemistry Source Type: research
In this study, the ablation characteristics of carbon/phenolic composites were evaluated using X-ray microtomography. The ablation tests of carbon/phenolic composites were performed using a 0.4 MW arc-heated wind tunnel, and the composite samples were scanned using micro-computed tomography (Micro-CT) to analyze the ablation characteristics according to the duration of the ablation test. Through calibration of the scanned raw images, ∼2,000 cross-sectional images were generated with micrometer level intervals. Using these obtained cross-sectional images, the porosity and density distributions in the longitudinal dire...
Source: Composites Science and Technology - Category: Science Source Type: research
Publication date: Available online 13 July 2019Source: Academic RadiologyAuthor(s): Peng Yu, Jixiao Lei, Baixuan Xu, Ruimin Wang, Zhihui Shen, Jiahe TianRationale and ObjectivesTo analyze the correlation between ultrasound breast imaging reporting and data system (BI-RADS) category and fluorodeoxyglucose [18F] (18F-FDG) positron emission tomography/computed tomography (PET/CT) findings and their value in breast lesion diagnosis.Materials and MethodsCases involving hypermetabolic lesions identified by 18F-FDG PET/CT and ultrasound were retrospectively analyzed. The correlation between the maximum standardized uptake values ...
Source: Academic Radiology - Category: Radiology Source Type: research
AbstractPositron emission tomography/computed tomography (PET/CT) is a standard procedure for imaging cancer commonly used in the clinical practice for several diseases, in particular for cancer staging, restaging, treatment monitoring and radiation therapy planning. Despite the availability of many radiotracers, 18F-fluoro-2-deoxy-2-d-glucose ([18F]FDG) is the most used. International PET/CT guidelines propose protocols for patients ’ correct preparation before [18F]FDG injection, in particular with the regard of diabetic patients and therapy management. Hyperglycemic conditions and oral or insulin medication showed...
Source: Acta Diabetologica - Category: Endocrinology Source Type: research
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Source: Annals of Medicine and Surgery - Category: General Medicine Source Type: research
Publication date: Available online 13 July 2019Source: Materials Science and Engineering: AAuthor(s): Gang Xue, Linda Ke, Haihong Zhu, Hailong Liao, Junjie Zhu, Xiaoyan ZengAbstractSiC particle reinforced Al matrix composites are increasingly applied in the automotive, military, aerospace and electronic encapsulation fields. In this work, SiC particle reinforced AlSi10Mg composites were fabricated by selective laser melting (SLM). The influences of processing parameters, such as laser power, hatching space and scanning speed, on density, microstructure and mechanical properties of the SLMed SiCp/AlSi10Mg composites were in...
Source: Materials Science and Engineering: A - Category: Materials Science Source Type: research
Publication date: Available online 13 July 2019Source: Materials Chemistry and PhysicsAuthor(s): L. Valeikiene, R. Paitian, I. Grigoraviciute-Puroniene, K. Ishikawa, A. KareivaAbstractIn the present study the transition metal substitution effects in Mg3-xMx/Al1 (M = Mn, Co, Ni, Cu, Zn) layered double hydroxides (LDHs) were investigated. For the synthesis of the mentioned compounds a newly developed sol-gel synthesis method has been applied. It was demonstrated that different amounts of Mn, Co, Ni, Cu and Zn could be introduced to the sol-gel derived LDHs without destroying the layered structure. The synthesis products ...
Source: Materials Chemistry and Physics - Category: Materials Science Source Type: research
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