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https://www.readbyqxmd.com/read/27771100/centrifuge-less-dispersive-liquid-liquid-microextraction-base-on-the-solidification-of-switchable-solvent-for-rapid-on-site-extraction-of-four-pyrethroid-insecticides-in-water-samples
#1
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...
October 11, 2016: Journal of Chromatography. A
https://www.readbyqxmd.com/read/27736874/eco-evolutionary-model-of-rapid-phenotypic-diversification-in-species-rich-communities
#2
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
https://www.readbyqxmd.com/read/27701017/design-and-application-of-sporopollenin-microcapsule-supported-palladium-catalyst-remarkably-high-turnover-frequency-and-reusability-in-catalysis-of-biaryls
#3
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...
September 28, 2016: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/27622703/low-intensity-ultrasonic-irradiation-for-highly-efficient-eco-friendly-and-fast-synthesis-of-graphene-oxide
#4
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
https://www.readbyqxmd.com/read/27474586/flame-retardation-of-cellulose-rich-fabrics-via-a-simplified-layer-by-layer-assembly
#5
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
https://www.readbyqxmd.com/read/27470942/fast-removal-of-copper-ions-from-aqueous-solution-using-an-eco-friendly-fibrous-adsorbent
#6
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
https://www.readbyqxmd.com/read/27413887/green-dyeing-process-of-modified-cotton-fibres-using-natural-dyes-extracted-from-tamarix-aphylla-l-karst-leaves
#7
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...
July 14, 2016: Natural Product Research
https://www.readbyqxmd.com/read/27233234/new-strategy-for-the-biosorption-of-atrazine-after-magnetic-solid-phase-extraction-from-water-followed-by-high-performance-liquid-chromatography-analysis
#8
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
https://www.readbyqxmd.com/read/27222752/an-eco-friendly-dyeing-of-woolen-yarn-by-terminalia-chebula-extract-with-evaluations-of-kinetic-and-adsorption-characteristics
#9
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
https://www.readbyqxmd.com/read/27158785/complete-mitochondrial-dna-sequences-of-the-victoria-tilapia-oreochromis-variabilis-and-redbelly-tilapia-tilapia-zilli-genome-characterization-and-phylogeny-analysis
#10
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
https://www.readbyqxmd.com/read/27083346/eco-friendly-microwave-assisted-protocol-to-prepare-hyaluronan-fatty-acid-conjugates-and-to-induce-their-self-assembly-process
#11
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
https://www.readbyqxmd.com/read/27036123/meta-analysis-of-49%C3%A2-549-individuals-imputed-with-the-1000-genomes-project-reveals-an-exonic-damaging-variant-in-angptl4-determining-fasting-tg-levels
#12
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
https://www.readbyqxmd.com/read/27000739/preparation-of-photonic-magnetic-responsive-molecularly-imprinted-microspheres-and-their-application-to-fast-and-selective-extraction-of-17%C3%AE-estradiol
#13
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
https://www.readbyqxmd.com/read/26978208/genetic-evidence-for-causal-relationships-between-maternal-obesity-related-traits-and-birth-weight
#14
Jessica Tyrrell, Rebecca C Richmond, Tom M Palmer, Bjarke Feenstra, Janani Rangarajan, Sarah Metrustry, Alana Cavadino, Lavinia Paternoster, Loren L Armstrong, N Maneka G De Silva, Andrew R Wood, Momoko Horikoshi, Frank Geller, Ronny Myhre, Jonathan P Bradfield, Eskil Kreiner-Møller, Ville Huikari, Jodie N Painter, Jouke-Jan Hottenga, Catherine Allard, Diane J Berry, Luigi Bouchard, Shikta Das, David M Evans, Hakon Hakonarson, M Geoffrey Hayes, Jani Heikkinen, Albert Hofman, Bridget Knight, Penelope A Lind, Mark I McCarthy, George McMahon, Sarah E Medland, Mads Melbye, Andrew P Morris, Michael Nodzenski, Christoph Reichetzeder, Susan M Ring, Sylvain Sebert, Verena Sengpiel, Thorkild I A Sørensen, Gonneke Willemsen, Eco J C de Geus, Nicholas G Martin, Tim D Spector, Christine Power, Marjo-Riitta Järvelin, Hans Bisgaard, Struan F A Grant, Ellen A Nohr, Vincent W Jaddoe, Bo Jacobsson, Jeffrey C Murray, Berthold Hocher, Andrew T Hattersley, Denise M Scholtens, George Davey Smith, Marie-France Hivert, Janine F Felix, Elina Hyppönen, William L Lowe, Timothy M Frayling, Debbie A Lawlor, Rachel M Freathy
IMPORTANCE: Neonates born to overweight or obese women are larger and at higher risk of birth complications. Many maternal obesity-related traits are observationally associated with birth weight, but the causal nature of these associations is uncertain. OBJECTIVE: To test for genetic evidence of causal associations of maternal body mass index (BMI) and related traits with birth weight. DESIGN, SETTING, AND PARTICIPANTS: Mendelian randomization to test whether maternal BMI and obesity-related traits are potentially causally related to offspring birth weight...
March 15, 2016: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/26843940/how-fast-is-fast-eco-evolutionary-dynamics-and-rates-of-change-in-populations-and-phenotypes
#15
John P DeLong, Valery E Forbes, Nika Galic, Jean P Gibert, Robert G Laport, Joseph S Phillips, Janna M Vavra
It is increasingly recognized that evolution may occur in ecological time. It is not clear, however, how fast evolution - or phenotypic change more generally - may be in comparison with the associated ecology, or whether systems with fast ecological dynamics generally have relatively fast rates of phenotypic change. We developed a new dataset on standardized rates of change in population size and phenotypic traits for a wide range of species and taxonomic groups. We show that rates of change in phenotypes are generally no more than 2/3, and on average about 1/4, the concurrent rates of change in population size...
January 2016: Ecology and Evolution
https://www.readbyqxmd.com/read/26829451/conflict-resolution-in-the-zoning-of-eco-protected-areas-in-fast-growing-regions-based-on-game-theory
#16
Jinyao Lin, Xia Li
Zoning eco-protected areas is important for ecological conservation and environmental management. Rapid and continuous urban expansion, however, may exert negative effects on the performance of practical zoning designs. Various methods have been developed for protected area zoning, but most of them failed to consider the conflicts between urban development (for the benefit of land developers) and ecological protection (local government). Some real-world zoning schemes even have to be modified occasionally after the lengthy negotiations between the government and land developers...
April 1, 2016: Journal of Environmental Management
https://www.readbyqxmd.com/read/26812440/microwave-assisted-synthesis-of-reduced-graphene-oxide-sno2-nanocomposite-for-oxygen-reduction-reaction-in-microbial-fuel-cells
#17
Nadia Garino, Adriano Sacco, Micaela Castellino, José Alejandro Muñoz-Tabares, Angelica Chiodoni, Valeria Agostino, Valentina Margaria, Matteo Gerosa, Giulia Massaglia, Marzia Quaglio
We report on an easy, fast, eco-friendly, and reliable method for the synthesis of reduced graphene oxide/SnO2 nanocomposite as cathode material for application in microbial fuel cells (MFCs). The material was prepared starting from graphene oxide that has been reduced to graphene during the hydrothermal synthesis of the nanocomposite, carried out in a microwave system. Structural and morphological characterizations evidenced the formation of nanocomposite sheets, with SnO2 crystals of few nanometers integrated in the graphene matrix...
February 2016: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/26766871/extracellular-synthesis-gold-nanotriangles-using-biomass-of-streptomyces-microflavus
#18
Meysam Soltani Nejad, Mehrdad Khatami, Gholam Hosein Shahidi Bonjar
Applications of nanotechnology and nano-science have ever-expanding breakthroughs in medicine, agriculture and industries in recent years; therefore, synthesis of metals nanoparticle (NP) has special significance. Synthesis of NPs by chemical methods are long, costly and hazardous for environment so biosynthesis has been developing interest for researchers. In this regard, the extracellular biosynthesis of gold nanotriangles (AuNTs) performed by use of the soil Streptomycetes. Streptomycetes isolated from rice fields of Guilan Province, Iran, showed biosynthetic activity for producing AuNTs via in vitro experiments...
February 2016: IET Nanobiotechnology
https://www.readbyqxmd.com/read/26291473/characterization-of-oligocellulose-synthesized-by-reverse-phosphorolysis-using-different-cellodextrin-phosphorylases
#19
Dejan M Petrović, Inge Kok, Albert J J Woortman, Jelena Ćirić, Katja Loos
Much progress was made in the straightforward and eco-friendly enzymatic synthesis of shorter cellulose chains (oligocellulose). Here, we report the determination of a molar mass distribution of the oligocellulose synthesized from cellobiose (CB) and α-glucose 1-phosphate by reverse phosphorolysis, using enzymes cellodextrin phosphorylase from Clostridium stercorarium or Clostridium thermocellum as catalyst. The oligocellulose molar mass distribution was analyzed using three different methods: (1)H NMR spectroscopy, matrix assisted laser desorption/ionization-time-of-flight mass spectrometry (MALDI-ToF MS) and size exclusion chromatography (SEC)...
October 6, 2015: Analytical Chemistry
https://www.readbyqxmd.com/read/26287801/complete-mitochondrial-dna-sequences-of-the-victoria-tilapia-oreochromis-variabilis-and-redbelly-tilapia-tilapia-zilli-genome-characterization-and-phylogeny-analysis
#20
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...
August 19, 2015: Mitochondrial DNA
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