Read by QxMD icon Read

Eco fast

Luciana Costa Dos Reis, Lorena Vidal, Antonio Canals
A fast, simple, economical, and environmentally friendly magnetic solid-phase extraction (MSPE) procedure has been developed to preconcentrate 2,4,6-trinitrotoluene (TNT) from water samples prior to determination by liquid chromatography-UV-Vis employing graphene oxide/Fe3O4 nanocomposite as sorbent. The nanocomposite synthesis was investigated, and the MSPE was optimized by a multivariate approach. The optimum MSPE conditions were 40 mg of nanocomposite, 10 min of vortex extraction, 1 mL of acetonitrile as eluent, and 6 min of desorption in an ultrasonic bath...
February 10, 2017: Analytical and Bioanalytical Chemistry
Stefan Zahn
Deep eutectic solvents, mixtures of an organic compound and a salt with a deep eutectic melting point, are promising cheap and eco-friendly alternatives to ionic liquids. Ab initio molecular dynamics simulations of reline, a mixture consisting of urea and choline chloride, reveal that not solely hydrogen bonds allow similar interactions between both constituents. The chloride anion and the oxygen atom of urea also show a similar spatial distribution close to the cationic core of choline due to a similar charge located on both atoms...
February 1, 2017: Physical Chemistry Chemical Physics: PCCP
D Gallart-Mateu, S Armenta, F A Esteve-Turrillas, M de la Guardia
A novel procedure is proposed for the determination by ion mobility spectrometry (IMS) of C12, C14 and C16 benzalkonium chloride (BAC) homologs. The proposed method requires minimum sample treatment and the measurement was made in less than one minute. A high sensitivity was obtained for BAC determination by IMS with limit of detection values from 37 to 69µgL(-1). Accuracy of the proposed methodology was evaluated through the analysis of aqueous and alcoholic samples spiked with BAC at concentration levels from 0...
March 1, 2017: Talanta
Fabrizio De Vico Fallani, Vito Latora, Mario Chavez
In many biological systems, the network of interactions between the elements can only be inferred from experimental measurements. In neuroscience, non-invasive imaging tools are extensively used to derive either structural or functional brain networks in-vivo. As a result of the inference process, we obtain a matrix of values corresponding to a fully connected and weighted network. To turn this into a useful sparse network, thresholding is typically adopted to cancel a percentage of the weakest connections...
January 2017: PLoS Computational Biology
Corina E Tarnita
Cooperation has been studied extensively across the tree of life, from eusociality in insects to social behavior in humans, but it is only recently that a social dimension has been recognized and extensively explored for microbes. Research into microbial cooperation has accelerated dramatically and microbes have become a favorite system because of their fast evolution, their convenience as lab study systems and the opportunity for molecular investigations. However, the study of microbes also poses significant challenges, such as a lack of knowledge and an inaccessibility of the ecological context (used here to include both the abiotic and the biotic environment) under which the trait deemed cooperative has evolved and is maintained...
January 1, 2017: Journal of Experimental Biology
Mihai Sopronyi, Felix Sima, Cyril Vaulot, Luc Delmotte, Armel Bahouka, Camelia Matei Ghimbeu
The design of mesoporous carbon materials with controlled textural and structural features by rapid, cost-effective and eco-friendly means is highly demanded for many fields of applications. We report herein on the fast and tailored synthesis of mesoporous carbon by UV and IR laser assisted irradiations of a solution consisting of green phenolic resins and surfactant agent. By tailoring the UV laser parameters such as energy, pulse repetition rate or exposure time carbon materials with different pore size, architecture and wall thickness were obtained...
December 21, 2016: Scientific Reports
Muhammad Hussaan, Naeem Iqbal, Shahid Adeel, Muhammad Azeem, M Tariq Javed, Ali Raza
Application of natural colorants to textile fabrics has gained worldwide public acceptance due to the hazardous nature of synthetic dyes. Present study investigated the microwave's mediated extraction of natural colorants from leaves of milkweed (Calotropis procera L.) as well as their application to cotton fabrics assisted with biochemical mordants. Dye extraction from C. procera leaves was carried out in various mediums (alkali and aqueous), and the extracted dye as well as cotton fabrics was irradiated with microwaves for 2, 4, 6, 8, or 10 min...
December 17, 2016: Environmental Science and Pollution Research International
Lu Hu, Huazi Wang, Heng Qian, Chaoran Liu, Runhua Lu, Sanbing Zhang, Wenfeng Zhou, Haixiang Gao, Donghui Xu
An on-site dispersive liquid liquid microextraction base on the solidification of switchable solvent has been developed as a simple, rapid and eco-friendly sample extraction method for the fast determination of pyrethroid insecticides in aqueous samples using high-performance liquid chromatography with ultraviolet detection. In this extraction method, medium-chain saturated fatty acids (n≥10), which can rapidly solidify at low temperatures (<20°C), were investigated as switchable hydrophilic solvents...
November 11, 2016: Journal of Chromatography. A
Paula Villa Martín, Jorge Hidalgo, Rafael Rubio de Casas, Miguel A Muñoz
Evolutionary and ecosystem dynamics are often treated as different processes -operating at separate timescales- even if evidence reveals that rapid evolutionary changes can feed back into ecological interactions. A recent long-term field experiment has explicitly shown that communities of competing plant species can experience very fast phenotypic diversification, and that this gives rise to enhanced complementarity in resource exploitation and to enlarged ecosystem-level productivity. Here, we build on progress made in recent years in the integration of eco-evolutionary dynamics, and present a computational approach aimed at describing these empirical findings in detail...
October 2016: PLoS Computational Biology
Talat Baran, Idris Sargin, Murat Kaya, Ayfer Menteş, Talip Ceter
Bio-based catalyst support materials with high thermal and structural stability are desired for catalysts systems requiring harsh conditions. In this study, a thermally stable palladium catalyst (up to 440°C) was designed from sporopollenin, which occurs naturally in the outer exine layer of pollens and is widely acknowledged as chemically very stable and inert biological material. Catalyst design procedure included (1) extraction of sporopollenin microcapsules from Betula pendula pollens (∼25μm), (2) amino-functionalisation of the microcapsules, (3) Schiff base modification and (4) preparation of Pd(II) catalyst...
January 15, 2017: Journal of Colloid and Interface Science
Tayyebeh Soltani, Byeong-Kyu Lee
High quality graphene oxide (GO) with low layer number (less than five layers) and large inter-layer space was produced via a new and efficient method using environmentally friendly, fast and economic ultrasonic radiation. The ultrasonic method neither generated any toxic gas nor required any NaNO3, which have been the main drawbacks of the Hummers methods. The major obstacles of the recently reported improved Hummers method for GO synthesis, such as high reaction temperature (50°C) and long reaction time (12h), were successfully solved using a low intensity-ultrasonic bath for 45min at 30°C, which significantly reduced the reaction time and energy consumption for GO synthesis...
August 20, 2016: Ultrasonics Sonochemistry
Jun-Chi Yang, Wang Liao, Shi-Bi Deng, Zhi-Jie Cao, Yu-Zhong Wang
Due to the high cellulose content of cotton (88.0-96.5%), the flame retardation of cotton fabrics can be achieved via an approach for the flame retardation of cellulose. In this work, a facile water-based flame retardant coating was deposited on cotton fabrics by a 'simplified' layer-by-layer (LbL) assembly. The novel coating solution was based on a mild reaction between ammonium polyphosphate (APP) and branched polyethyleneimine (BPEI), and the reaction mechanism was studied. TGA results showed that the char residues of coated fabrics were remarkably increased...
October 20, 2016: Carbohydrate Polymers
Yaolan Niu, Diwen Ying, Kan Li, Yalin Wang, Jinping Jia
Functional PET fiber (PET-AA-CS) was prepared by oxygen-plasma pretreatment and grafting of acrylic acid (AA) and low-molecular-weight chitosan (LMCS) on the polyethylene glycol terephthalate (PET) substrate. This adsorbent was targeted for quick removal of metal ion in river pollutions with an easy recycling of the fiber after emergency processing. The fabricated PET-AA-CS was characterized by the scanning electron microscope (SEM), contact angle, fourier transform infrared (FTIR) spectra and X-ray photoelectron spectroscopy (XPS) to look into its morphology, surface functional groups, and adsorption mechanism of copper ions from the aqueous solution...
October 2016: Chemosphere
Noureddine Baaka, Adel Mahfoudhi, Wafa Haddar, Mohamed Farouk Mhenni, Zine Mighri
This research work involves an eco-friendly dyeing process of modified cotton with the aqueous extract of Tamarix aphylla leaves. During this process, the dyeing step was carried out on modified cotton by several cationising agents in order to improve its dyeability. The influence of the main dyeing conditions (dye bath pH, dyeing time, dyeing temperature, salt addition) on the performances of this dyeing process were studied. The dyeing performances of this process were appreciated by measuring the colour yield (K/S) and the fastness properties of the dyed samples...
January 2017: Natural Product Research
Seyed Ammar Haeri, Shahryar Abbasi
We describe a rapid and simple microextraction of atrazine from water samples. This method is based on the use of magnetic nanoparticles as sorbents and bioaggregates that are applied to the extraction and preconcentration of atrazine. The resulting magnetic nanoparticles possess a fast adsorption kinetics and high adsorption capacity. Bioaggregates made up of rhaminolipid biosurfactant were assessed as a new strategy for the sample treatment. The extractant was obtained from magnetic nanoparticles using the magnetic solid-phase extraction method...
July 2016: Journal of Separation Science
Mohd Shabbir, Luqman Jameel Rather, Shahid-Ul-Islam, Mohd Nadeem Bukhari, Mohd Shahid, Mohd Ali Khan, Faqeer Mohammad
In the present study Terminalia chebula was used as an eco-friendly natural colorant for sustainable textile coloration of woolen yarn with primary emphasis on thermodynamic and kinetic adsorption aspects of dyeing processes. Polyphenols and ellagitannins are the main coloring components of the dye extract. Assessment of the effect of pH on dye adsorption showed an increase in adsorption capacity with decreasing pH. Effect of temperature on dye adsorption showed 80 °C as optimum temperature for wool dyeing with T...
May 2016: Journal of Advanced Research
Zachary Omambia Kinaro, Liangyi Xue, Josies Ancella Volatiana
The Cichlid fishes have played an important role in evolutionary biology, population studies and aquaculture industry with East African species representing a model suited for studying adaptive radiation and speciation for cichlid genome projects in which closely related genomes are fast emerging presenting questions on phenotype-genotype relations. The complete mitochondrial genomes presented here are for two closely related but eco-morphologically distinct Lake Victoria basin cichlids, Oreochromis variabilis, an endangered native species and Tilapia zilli, an invasive species, both of which are important economic fishes in local areas...
July 2016: Mitochondrial DNA. Part A. DNA Mapping, Sequencing, and Analysis
Enrica Calce, Flavia Anna Mercurio, Marilisa Leone, Michele Saviano, Stefania De Luca
An environmentally sustainable and energy-efficient synthetic process has been developed to prepare hyaluronan-based nano-sized material. It consists in a microwave-promoted acylation of the hydroxyl function of the polysaccharide with natural fatty acids, performed under solvent-free conditions. The efficient interaction of the solid reagents with the MW radiation accounts for the obtained high yielded products. The self-assembly process of the obtained compounds very fast occurred in an aqueous medium under MW-radiation, thus allowing the development of a green protocol for the nano-particles preparation...
June 5, 2016: Carbohydrate Polymers
Elisabeth M van Leeuwen, Aniko Sabo, Joshua C Bis, Jennifer E Huffman, Ani Manichaikul, Albert V Smith, Mary F Feitosa, Serkalem Demissie, Peter K Joshi, Qing Duan, Jonathan Marten, Jan B van Klinken, Ida Surakka, Ilja M Nolte, Weihua Zhang, Hamdi Mbarek, Ruifang Li-Gao, Stella Trompet, Niek Verweij, Evangelos Evangelou, Leo-Pekka Lyytikäinen, Bamidele O Tayo, Joris Deelen, Peter J van der Most, Sander W van der Laan, Dan E Arking, Alanna Morrison, Abbas Dehghan, Oscar H Franco, Albert Hofman, Fernando Rivadeneira, Eric J Sijbrands, Andre G Uitterlinden, Josyf C Mychaleckyj, Archie Campbell, Lynne J Hocking, Sandosh Padmanabhan, Jennifer A Brody, Kenneth M Rice, Charles C White, Tamara Harris, Aaron Isaacs, Harry Campbell, Leslie A Lange, Igor Rudan, Ivana Kolcic, Pau Navarro, Tatijana Zemunik, Veikko Salomaa, Angad S Kooner, Jaspal S Kooner, Benjamin Lehne, William R Scott, Sian-Tsung Tan, Eco J de Geus, Yuri Milaneschi, Brenda W J H Penninx, Gonneke Willemsen, Renée de Mutsert, Ian Ford, Ron T Gansevoort, Marcelo P Segura-Lepe, Olli T Raitakari, Jorma S Viikari, Kjell Nikus, Terrence Forrester, Colin A McKenzie, Anton J M de Craen, Hester M de Ruijter, Gerard Pasterkamp, Harold Snieder, Albertine J Oldehinkel, P Eline Slagboom, Richard S Cooper, Mika Kähönen, Terho Lehtimäki, Paul Elliott, Pim van der Harst, J Wouter Jukema, Dennis O Mook-Kanamori, Dorret I Boomsma, John C Chambers, Morris Swertz, Samuli Ripatti, Ko Willems van Dijk, Veronique Vitart, Ozren Polasek, Caroline Hayward, James G Wilson, James F Wilson, Vilmundur Gudnason, Stephen S Rich, Bruce M Psaty, Ingrid B Borecki, Eric Boerwinkle, Jerome I Rotter, L Adrienne Cupples, Cornelia M van Duijn
BACKGROUND: So far, more than 170 loci have been associated with circulating lipid levels through genome-wide association studies (GWAS). These associations are largely driven by common variants, their function is often not known, and many are likely to be markers for the causal variants. In this study we aimed to identify more new rare and low-frequency functional variants associated with circulating lipid levels. METHODS: We used the 1000 Genomes Project as a reference panel for the imputations of GWAS data from ∼60 000 individuals in the discovery stage and ∼90 000 samples in the replication stage...
July 2016: Journal of Medical Genetics
Hailong Peng, Mei Luo, Hua Xiong, Ningxiang Yu, Fangjian Ning, Jieping Fan, Zheling Zeng, Jinhua Li, Lingxin Chen
Photonic-magnetic responsive molecularly imprinted microspheres (PM-MIMs) were prepared by seed polymerization, through suitable functionalization of magnetic nanoparticles for further coating with photoresponsive functional monomer and imprinted layers, and then were successfully applied to the fast and selective extraction of 17β-estradiol (17β-E2) from real samples. The PM-MIMs possessed a sandwich micro-spherical structure containing Fe3O4 core, SiO2 middle layer, and MIPs shell with thickness of 25 nm...
April 15, 2016: Journal of Chromatography. A
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"