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https://www.readbyqxmd.com/read/29146498/synthesis-and-characterization-of-silver-nanoparticles-using-gelidium-amansii-and-its-antimicrobial-property-against-various-pathogenic-bacteria
#1
Arivalagan Pugazhendhi, Desika Prabakar, Jaya Mary Jacob, Indira Karuppusamy, Rijuta Ganesh Saratale
Microfouling is evolving at a fast rate causing augmented mortality rates and damage worldwide. Until now, several remedial measures have been exploited to overcome microfouling, amongst them nanoparticles play a superior role. Currently, green synthesized nanoparticles have been centered owing to its eco-friendly, cost effectively and non-toxic nature which has also increased its industrial applications (biomedicine, food and textile). In the present research Silver Nanoparticles (Ag NPs) synthesized using marine red algae Gelidium amansii...
November 13, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/29141144/engineering-interface-with-one-dimensional-co3o4-nanostructure-in-catalytic-membrane-electrode-towards-an-advanced-electrocatalyst-for-alcohol-oxidation
#2
Zhen Yin, Yumei Zheng, Hong Wang, Jianxin Li, Qingjun Zhu, Ye Wang, Na Ma, Gang Hu, Benqiao He, Axel Knop-Gericke, Robert Schloegl, Ding Ma
Electrochemical oxidation has attracted vast interests as a promising alternative to traditional chemical processes in fine chemical synthesis owing to its fast and sustainable features. An electrocatalytic membrane reactor (ECMR) with a three-dimensional (3D) electrode has been successfully designed for the selective oxidation of alcohols with high current efficiency to the corresponding acids or ketones. The anode electrode was fabricated by the in-situ loading of one-dimensional (1D) Co3O4 nanowires (NWs) on the conductive porous Ti membrane (Co3O4 NWs/Ti) via the combination of a facile hydrothermal synthesis and subsequent thermal treatment...
November 15, 2017: ACS Nano
https://www.readbyqxmd.com/read/29137784/surface-modified-sio2-nanoparticles-by-thiamine-and-ultrasonication-synthesis-of-pcl-sio2-vb1-ncs-morphology-thermal-mechanical-and-bioactivity-investigations
#3
Shadpour Mallakpour, Zahra Khani
The influence of silica (SiO2) nanoparticles (NPs) on the properties of polycaprolactone (PCL) was investigated. Due to the intense tendency of SiO2 NPs to aggregation and their high surface energy, the surface of SiO2 NPs was treatment via Vitamin B1 (VB1) as a biosafe coupling agent. Novel PCL/SiO2-VB1 nanocomposites (NC) films by variety of percentage of SiO2-VB1 NPs were prepared under ultrasonic irradiation as an eco-friendly and fast procedure following by casting method. Fourier transform infrared spectroscopy and energy dispersive X-ray analysis exposed the presence of SiO2 NPs into the polymer matrix...
March 2018: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/29124326/impact-of-two-arbuscular-mycorrhizal-fungi-on-arundo-donax-l-response-to-salt-stress
#4
Susanna Pollastri, Andreas Savvides, Massimo Pesando, Erica Lumini, Maria Grazia Volpe, Elif Aylin Ozudogru, Antonella Faccio, Fausta De Cunzo, Marco Michelozzi, Maurizio Lambardi, Vasileios Fotopoulos, Francesco Loreto, Mauro Centritto, Raffaella Balestrini
AM symbiosis did not strongly affect Arundo donax performances under salt stress, although differences in the plants inoculated with two different fungi were recorded. The mechanisms at the basis of the improved tolerance to abiotic stresses by arbuscular mycorrhizal (AM) fungi have been investigated mainly focusing on food crops. In this work, the potential impact of AM symbiosis on the performance of a bioenergy crop, Arundo donax, under saline conditions was considered. Specifically, we tried to understand whether AM symbiosis helps this fast-growing plant, often widespread in marginal soils, withstand salt...
November 9, 2017: Planta
https://www.readbyqxmd.com/read/29113890/analysis-of-aspergillus-sp-lipase-immobilization-for-the-application-in-organic-synthesis
#5
Alisa Gricajeva, Simas Kazlauskas, Lilija Kalėdienė, Vida Bendikienė
Nowadays, for the industrial implementations, especially in the area of organic synthesis, immobilized enzymes are preferred over their soluble forms. Present study aimed to find fast, cost-efficient, and effective way of lipase immobilization for the use in organic media. Lipase from Aspergillus sp. (Resinase A 2X) was immobilized utilizing cross-linking of enzyme aggregates, covalent immobilization on magnetite particles and adsorption-immobilization using pyrolyzed sugar industry waste product as a novel type of carrier...
November 4, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29105715/vertically-stacked-nanocellulose-tactile-sensor
#6
Minhyun Jung, Kyungkwan Kim, Bumjin Kim, Kwang-Jae Lee, Jae-Wook Kang, Sanghun Jeon
Paper-based electronic devices are attracting considerable attention, because the paper platform has unique attributes such as flexibility and eco-friendliness. Here we report on what is claimed to be the firstly fully integrated vertically-stacked nanocellulose-based tactile sensor, which is capable of simultaneously sensing temperature and pressure. The pressure and temperature sensors are operated using different principles and are stacked vertically, thereby minimizing the interference effect. For the pressure sensor, which utilizes the piezoresistance principle under pressure, the conducting electrode was inkjet printed on the TEMPO-oxidized-nanocellulose patterned with micro-sized pyramids, and the counter electrode was placed on the nanocellulose film...
November 16, 2017: Nanoscale
https://www.readbyqxmd.com/read/29077102/improved-response-time-of-flexible-microelectromechanical-sensors-employing-eco-friendly-nanomaterials
#7
Shicheng Fan, Li Dan, Lingju Meng, Wei Zheng, Anastasia Elias, Xihua Wang
Flexible force/pressure sensors are of interest for academia and industry and have applications in wearable technologies. Most of such sensors on the market or reported in journal publications are based on the operation mechanism of probing capacitance or resistance changes of the materials under pressure. Recently, we reported the microelectromechanical (MEM) sensors based on a different mechanism: mechanical switches. Multiples of such MEM sensors can be integrated to achieve the same function of regular force/pressure sensors while having the advantages of ease of fabrication and long-term stability in operation...
November 9, 2017: Nanoscale
https://www.readbyqxmd.com/read/28962761/one-pot-production-of-chitin-with-high-purity-from-lobster-shells-using-choline-chloride-malonic-acid-deep-eutectic-solvent
#8
Ping Zhu, Zhongji Gu, Shu Hong, Hailan Lian
For the first time in this study, chitin was solely extracted from lobster shells through a fast, easy and eco-friendly method using deep eutectic solvents (DESs), consisting of mixtures of choline chloride-thiourea (CCT), choline chloride-urea (CCU), choline chloride-glycerol (CCG) and choline chloride-malonic acid (CCMA). The physiochemical properties of the isolated chitins were compared with those of the chemically prepared one and commercial one from shrimp shells. Results showed that CCT, CCU and CCG DESs had no important effect on the elimination of proteins and minerals, while chitin obtained by CCMA DES showed a high purity...
December 1, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28946439/ultrasonic-assisted-fabrication-of-starch-mwcnt-glucose-nanocomposites-for-drug-delivery
#9
Shadpour Mallakpour, Leila Khodadadzadeh
The principal focus of this investigation is to prepare starch nanocomposite (NC) films containing multi-walled carbon nanotube (MWCNT) and apply these NCs for drug delivery. Firstly, to raise the hydrophilicity of carboxyl functionalized MWCNT, the surface of them was modified with d-glucose (Gl) as a low cost and environmentally friendly biomolecule. Different percentages of MWCNT-Gl (0.5, 1 and 2wt%) were embedded in starch matrix through sonochemical method as an economical, fast, eco-friendly, and effective method...
January 2018: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/28936587/metabolite-ratios-as-potential-biomarkers-for-type-2-diabetes-a-direct-study
#10
Sophie Molnos, Simone Wahl, Mark Haid, E Marelise W Eekhoff, René Pool, Anna Floegel, Joris Deelen, Daniela Much, Cornelia Prehn, Michaela Breier, Harmen H Draisma, Nienke van Leeuwen, Annemarie M C Simonis-Bik, Anna Jonsson, Gonneke Willemsen, Wolfgang Bernigau, Rui Wang-Sattler, Karsten Suhre, Annette Peters, Barbara Thorand, Christian Herder, Wolfgang Rathmann, Michael Roden, Christian Gieger, Mark H H Kramer, Diana van Heemst, Helle K Pedersen, Valborg Gudmundsdottir, Matthias B Schulze, Tobias Pischon, Eco J C de Geus, Heiner Boeing, Dorret I Boomsma, Anette G Ziegler, P Eline Slagboom, Sandra Hummel, Marian Beekman, Harald Grallert, Søren Brunak, Mark I McCarthy, Ramneek Gupta, Ewan R Pearson, Jerzy Adamski, Leen M 't Hart
AIMS/HYPOTHESIS: Circulating metabolites have been shown to reflect metabolic changes during the development of type 2 diabetes. In this study we examined the association of metabolite levels and pairwise metabolite ratios with insulin responses after glucose, glucagon-like peptide-1 (GLP-1) and arginine stimulation. We then investigated if the identified metabolite ratios were associated with measures of OGTT-derived beta cell function and with prevalent and incident type 2 diabetes...
September 21, 2017: Diabetologia
https://www.readbyqxmd.com/read/28926735/ketamine-metabolites-with-antidepressant-effects-fast-economical-and-eco-friendly-enantioselective-separation-based-on-supercritical-fluid-chromatography-sfc-and-single-quadrupole-ms-detection
#11
Georg M Fassauer, Robert Hofstetter, Mahmoud Hasan, Stefan Oswald, Christina Modeß, Werner Siegmund, Andreas Link
Increasing evidence accumulates that metabolites of the dissociative anesthetic ketamine contribute considerably to the biological effects of this drug and could be developed as next generation antidepressants, especially for acute treatment of patients with therapy-refractory major depression. Analytical methods for the simultaneous determination of the plethora of hydroxylated, dehydrogenated and/or demethylated compounds formed after administration of ketamine hydrochloride are a prerequisite for future clinical investigations and a deeper understanding of the individual role of the isomers of these metabolites...
September 8, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28917736/off-line-microextraction-by-packed-sorbent-combined-with-on-solid-support-derivatization-and-gc-ms-application-for-the-analysis-of-five-pyrethroid-metabolites-in-urine-samples
#12
Anna Klimowska, Bartosz Wielgomas
A novel, fast and eco-friendly analytical method using microextraction by packed sorbent coupled to large volume injection-gas chromatography-mass spectrometry (MEPS-LVI-GC-MS) was developed for the determination of five pyrethroid metabolites (cis-2,2-dimethyl-3-(2-chloro-3,3,3-trifluoro-1-propenyl)-cyclopropanecarboxylic acid, cis/trans-3-(2,2-dichlorovinyl)-2,2-dimethylcyclopropane-1-carboxylic acids, cis-(2,2-dibromovinyl)-2,2-dimethylcyclopropane-1-carboxylic acid and 3-phenoxybenzoic acid) in human urine...
January 1, 2018: Talanta
https://www.readbyqxmd.com/read/28858353/bio-inspired-spider-web-like-membranes-with-a-hierarchical-structure-for-high-performance-lithium-sodium-ion-battery-electrodes-the-case-of-3d-freestanding-and-binder-free-bismuth-cnf-anodes
#13
Yuqiang Jin, Haocheng Yuan, Jin-Le Lan, Yunhua Yu, Yuan-Hua Lin, Xiaoping Yang
High gravimetric energy density and volumetric energy density energy storage devices are highly desirable due to the rapid development of electric vehicles, and portable and wearable electronic equipment. Electrospinning is a promising technology for preparing freestanding electrodes with high gravimetric and volumetric energy density. However, the energy density of the traditional electrospun electrodes is restricted by the low mass loading of active materials (e.g. 20%-30 wt%). Herein, a biomimetic strategy inspired by the phenomenon of the sticky spider web is demonstrated as a high performance anode, which simultaneously improves the gravimetric and volumetric energy density...
September 14, 2017: Nanoscale
https://www.readbyqxmd.com/read/28790819/kalopanacis-cortex-extract-capped-gold-nanoparticles-activate-nrf2-signaling-and-ameliorate-damage-in-human-neuronal-sh-sy5y-cells-exposed-to-oxygen-glucose-deprivation-and-reoxygenation
#14
Sun Young Park, Seon Yeong Chae, Jin Oh Park, Kyu Jin Lee, Geuntae Park
Recently, environment-friendly synthesis of gold nanoparticles (GNPs) has been extensively explored by biologists and chemists. However, significant research is still required to determine whether "eco-friendly" GNPs are beneficial to human health and to elucidate the molecular mechanisms of their effects on human cells. We used human neuronal SH-SY5Y cells to show that treatment with Kalopanacis Cortex extract-capped GNPs (KC-GNs), prepared via an eco-friendly, fast, one-pot synthetic route, protected neuronal cells against oxygen-glucose deprivation/reoxygenation (OGD/R)-induced damage...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28764136/an-eco-friendly-approach-for-heavy-metal-adsorbent-regeneration-using-co2-responsive-molecular-octopus
#15
Yu Bai, Yen Nan Liang, Xiao Hu
Perennial problems of adsorption in wastewater treatment include adsorbent recycling, generation of waste sludge and secondary pollution because harmful concentrated acids, bases or strong chelators are often used for adsorbent regeneration and adsorbate recovery. We report, for the first time, an eco-friendly regeneration concept demonstrated with a CO2-responsive octopus-like polymeric adsorbent. Various heavy metals can be scavenged at very high Qe by such adsorbent through coordination. Most importantly, the rapid and complete regeneration of the adsorbent and recovery of the heavy metal ions can be readily achieved by CO2 bubbling within a few minutes under mild conditions, i...
October 2017: Chemosphere
https://www.readbyqxmd.com/read/28738506/taxonomy-or-trait-based-ecological-assessment-for-tropical-rivers-case-study-on-benthic-diatoms-in-mayotte-island-france-indian-ocean
#16
Kálmán Tapolczai, Agnès Bouchez, Csilla Stenger-Kovács, Judit Padisák, Frédéric Rimet
Diatom-based ecological quality assessment methods have been implemented and used regularly in the Water Framework Directive. These indices use the species' abundance profiles along a specific environmental gradient, which they aim to assess. However, this approach has several problematic issues including the unstable and fast-changing diatom taxonomy. The use of traits can be a solution if their responses to the environmental pressure are well-defined. Here, we developed taxonomy-based and trait-based diatom assemblage indices to assess the ecological status of riverine sites on a tropical island...
December 31, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28733004/study-on-thermal-mechanical-and-adsorption-properties-of-amine-functionalized-mcm-41-pmma-and-mcm-41-ps-nanocomposites-prepared-by-ultrasonic-irradiation
#17
Gholamhossein Mohammadnezhad, Saeed Abad, Roozbeh Soltani, Mohammad Dinari
In this study, two common industrial polymers, poly(methyl methacrylate) (PMMA) and polystyrene (PS), were incorporated into amine-functionalized MCM-41 mesoporous silica as reinforcement agents via an ultrasonic assisted method as a facile, fast, eco-friendly, and versatile synthetic tool. Amino functionalization of MCM-41 were performed by 3-aminopropyl triethoxysilane as a coupling agent and it is denoted as APTS-MCM-41. The obtained nanocomposites (NCs), APTS-MCM-41/PMMA and APTS-MCM-41/PS, were characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), scanning and transmission electron microscopies (SEM and TEM), and thermogravimetric analysis (TGA)...
November 2017: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/28718512/overweight-is-associated-with-lower-resting-state-functional-connectivity-in-females-after-eliminating-genetic-effects-a-twin-study
#18
Stieneke Doornweerd, Eelco van Duinkerken, Eco J de Geus, Parniane Arbab-Zadeh, Dick J Veltman, Richard G IJzerman
Obesity is related to altered functional connectivity of resting state brain networks that are involved in reward and motivation. It is unknown to what extent these associations reflect genetic confounding and whether the obesity-related connectivity changes are associated with differences in dietary intake. In this study, resting state functional MRI was performed after an overnight fast in 16 female monozygotic twin pairs (aged 48.8 ± 9.8 years) with a mean BMI discordance of 3.96 ± 2.1 kg/m(2) (range 0...
July 17, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/28706284/facile-fabrication-of-superparamagnetic-graphene-polyaniline-fe3o4-nanocomposites-for-fast-magnetic-separation-and-efficient-removal-of-dye
#19
Bin Mu, Jie Tang, Long Zhang, Aiqin Wang
Using graphene as adsorbent for removal of pollutants from polluted water is commonly recognized to be costly because the graphene is usually produced by a very complex process. Herein, a simple and eco-friendly method was employed to fabricate efficient superparamagnetic graphene/polyaniline/Fe3O4 nanocomposites for removal of dyes. The exfoliation of graphite as nanosheets and the functionalization of nanosheets with polyaniline and Fe3O4 nanoparticles were simultaneously achieved via a one-pot reaction process combining the intercalation polymerization of aniline and the co-precipitation of the residual Fe(3+) and the generated Fe(2+)...
July 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28697474/extraction-of-natural-colorant-from-purple-sweet-potato-and-dyeing-of-fabrics-with-silver-nanoparticles-for-augmented-antibacterial-activity-against-skin-pathogens
#20
Palanivel Velmurugan, Jae-In Kim, Kangmin Kim, Jung-Hee Park, Kui-Jae Lee, Woo-Suk Chang, Yool-Jin Park, Min Cho, Byung-Taek Oh
The main objective of this study was to extract natural colorant from purple sweet potato powder (PSPP) via a water bath and ultrasound water bath using acidified ethanol (A. EtOH) as the extraction solvent. When optimizing the colorant extraction conditions of the solvents, acidified ethanol with ultrasound yielded a high extraction capacity and color intensity at pH2, temperature of 80°C, 20mL of A. EtOH, 1.5g of PSPP, time of 45min, and ultrasonic output power of 75W. Subsequently, the colorant was extracted using the optimized conditions for dyeing of textiles (leather, silk, and cotton)...
August 2017: Journal of Photochemistry and Photobiology. B, Biology
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