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https://www.readbyqxmd.com/read/28821050/clean-approach-to-synthesis-of-graphene-like-cufe2o4-polysaccharide-resin-nanohybrid-bifunctional-compound-for-dye-adsorption-and-bacterial-capturing
#1
Mostafa Hossein Beyki, Sarina Ehteshamzadeh Ganjbakhsh, Sara Minaeian, Farzaneh Shemirani
Focus of this research is on employment of a green route to prepare magnetic CuFe2O4@polysaccharide resin for environmental remediation purpose. The method is including solvent free solid state synthesis of copper ferrite nanoparticles by combustion route using cellulose as fuel. Then polysaccharide resin as well as its magnetic composite was prepared by using glucose, citric acid and copper ferrite as solid raw materials. Characterization study using FESEM and TEM images showed that as synthesized resin possesses graphene like structure as ferrite nanoparticles are dispersed in the matrice of resin...
October 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28820952/adult-intelligence-the-construct-and-the-criterion-problem
#2
Phillip L Ackerman
Over 100 years have passed since Binet and Simon proposed scales for assessment of intelligence of children to predict academic success and failure. The extension of these assessments to adults largely resulted from efforts of psychologists to provide insights for military selection in World War I. At the time, relatively little thought was given to how adult intelligence might differ from child and adolescent intelligence. Traditional approaches for assessing adult intelligence have largely survived. However, there is little reference to adult intellectual functioning outside of laboratory-based tasks and clinical assessments of pathology...
August 1, 2017: Perspectives on Psychological Science: a Journal of the Association for Psychological Science
https://www.readbyqxmd.com/read/28820489/the-effect-of-hydrogen-bonding-in-enhancing-the-ionic-affinities-of-immobilized-monoprotic-phosphate-ligands
#3
Spiro D Alexandratos, Xiaoping Zhu
Environmental remediation requires ion-selective polymers that operate under a wide range of solution conditions. In one example, removal of trivalent and divalent metal ions from waste streams resulting from mining operations before they enter the environment requires treatment at acidic pH. The monoethyl ester phosphate ligands developed in this report operate from acidic solutions. They have been prepared on polystyrene-bound ethylene glycol, glycerol, and pentaerythritol, and it is found that intra-ligand hydrogen bonding affects their metal ion affinities...
August 18, 2017: Materials
https://www.readbyqxmd.com/read/28820042/biodegradation-of-remazol-brilliant-blue-r-using-isolated-bacterial-culture-staphylococcus-sp-k2204
#4
Velayutham Karthikeyan, Madhava Anil Kumar, Pushparaj Mohanapriya, Thanarasu Amudha, Devaraj Thiruselvi, Periyasamy Karthik, Subramanian Sivanesan
Staphylococcus sp. K2204, a bacterial isolate, was employed in this work to decolorize Remazol Brilliant Blue R (RBBR), which belongs to the anthraquinone class of textile dye. Staphylococcus sp. K2204 biodegraded 100 mg/L RBBR at 37°C, under static condition with the help of extracellular laccase and peroxidases. The products of RBBR degradation were characterized using analytical tools including mass spectral technique. The phytotoxicity tests evaluated the toxicity of RBBR and the products of biodegradation...
August 18, 2017: Environmental Technology
https://www.readbyqxmd.com/read/28819708/in-situ-remediation-of-chlorinated-solvent-contaminated-groundwater-using-zvi-organic-carbon-amendment-in-china-field-pilot-test-and-full-scale-application
#5
Jie Yang, Liang Meng, Lin Guo
Chlorinated solvents in groundwater pose threats to human health and the environment due to their carcinogenesis and bioaccumulation. These problems are often more severe in developing countries such as China. Thus, methods for chlorinated solvent-contaminated groundwater remediation are urgently needed. This study presents a technique of in situ remediation via the direct-push amendment injection that enhances the reductive dechlorination of chlorinated solvents in groundwater in the low-permeability aquifer...
August 18, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28819697/mechanistic-understanding-of-crystal-violet-dye-sorption-by-woody-biochar-implications-for-wastewater-treatment
#6
Awanthi Wathukarage, Indika Herath, M C M Iqbal, Meththika Vithanage
Dye-based industries, particularly small and medium scale, discharge their effluents into waterways without treatment due to cost considerations. We investigated the use of biochars produced from the woody tree Gliricidia sepium at 300 °C (GBC300) and 500 °C (GBC500) in the laboratory and at 700 °C from a dendro bioenergy industry (GBC700), to evaluate their potential for sorption of crystal violet (CV) dye. Experiments were conducted to assess the effect of pH reaction time and CV loading on the adsorption process...
August 17, 2017: Environmental Geochemistry and Health
https://www.readbyqxmd.com/read/28819269/characteristic-assessment-of-diesel-degrading-bacteria-immobilized-on-natural-organic-carriers-in-marine-environment-the-degradation-activity-and-nutrient
#7
Jianliang Xue, Yanan Wu, Zhixiu Liu, Menglu Li, Xiyu Sun, Huajun Wang, Bing Liu
Oil spill has led to severe environmental and ecological problems. Due to the harsh environmental conditions, the bioremediation technology is not successfully used to remedy the oil spill in marine environment. In this study, immobilization technology was used to immobilize bacteria on natural organic carriers (i.e., wood chips and maize straw). The higher surface area of in wood chips leads to larger biomass density (0.0242 gVSS/g) than that of maize straw of 0.0097 gVSS/g carrier. Compared with biodegradation efficiency of free bacteria (44...
August 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28819118/exploring-the-sorption-mechanism-of-ni-ii-on-illite-batch-sorption-modelling-exafs-and-extraction-investigations
#8
Xiaolan Zhao, Shirong Qiang, Hanyu Wu, Yunbo Yang, Dadong Shao, Linchuan Fang, Jianjun Liang, Ping Li, Qiaohui Fan
The sorption mechanism of nickel (Ni) at the illite/water interface was investigated using batch, sorption modelling, extended X-ray absorption fine structure (EXAFS), and extraction approaches. The results showed that Ni(II) sorption on illite was strongly dependent on pH, contact time, temperature, and initial Ni(II) concentration. At a low initial Ni(II) concentration, the ion exchange species of ≡X2Ni° and the inner-sphere complexes including ≡S(s)ONi(+), ≡S(w)ONi(+) and ≡S(w)ONiOH° species are observed on the sorption edges of Ni(II) on illite...
August 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28818594/ultraviolet-and-solar-photocatalytic-ozonation-of-municipal-wastewater-catalyst-reuse-energy-requirements-and-toxicity-assessment
#9
Achisa C Mecha, Maurice S Onyango, Aoyi Ochieng, Maggy N B Momba
The present study evaluated the treatment of municipal wastewater containing phenol using solar and ultraviolet (UV) light photocatalytic ozonation processes to explore comparative performance. Important aspects such as catalyst reuse, mineralization of pollutants, energy requirements, and toxicity of treated wastewater which are crucial for practical implementation of the processes were explored. The activity of the photocatalysts did not change significantly even after three consecutive uses despite approximately 2% of the initial quantity of catalyst being lost in each run...
August 13, 2017: Chemosphere
https://www.readbyqxmd.com/read/28818342/novel-treatment-technologies-for-pfas-compounds-a-critical-review
#10
Katarzyna H Kucharzyk, Ramona Darlington, Mark Benotti, Rula Deeb, Elisabeth Hawley
Perfluorinated compounds such as perfluorooctane sulfonate (PFOS) and perfluorooctanoic acid (PFOA) have recently drawn great attention due to their wide distribution in aquatic environments. The understanding of the physicochemical properties and fate and transport of PFAs in groundwater is still limited. Preliminary studies indicate that these compounds can readily bioaccumulate and pose human and animal health concerns. Due to their physicochemical properties, PFOS and PFOA are water soluble, nonvolatile and persistent in the environment, which is a cause of concern related to their treatment with conventional remediation technologies...
August 14, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28818029/magnetic-sorbents-biomineralization-on-the-basis-of-iron-sulphides
#11
Jana Jencarova, Alena Luptakova, Nikola Vitkovska, Dalibor Matysek, Petr Jandacka
Biomineralization means mineral formation under the influence of organisms. Sulphate-reducing bacteria (SRB) constitute an essential role of iron sulphide minerals precipitation. Their composition involves amorphous, non-stoichiometric or crystalline iron sulphides, weakly or strongly magnetic. Variation in environmental conditions can alter the reactive iron species within the mineral, potentially modifying their magnetic properties. Biogenic iron sulphide minerals can be used as heavy metals and toxic ions adsorbents in soil or water remediation...
August 18, 2017: Environmental Technology
https://www.readbyqxmd.com/read/28817945/management-of-breast-milk-oversupply-in-traditional-persian-medicine
#12
Marya Kabiri, Mohammad Kamalinejad, Farnaz Sohrabvand, Soodabeh Bioos, Mohammad Babaeian
Comprehensive explanation about milk oversupply is not available in the current literature because few studies have been done on this topic. In traditional Persian medicine, milk oversupply and its management have been described. The aim of this study was to investigate milk oversupply from the perspective of medieval Persian practitioners. In this study, some main medical resources of traditional Persian medicine such as Al-Havi and the Canon of Medicine were studied to extract valuable information about milk oversupply...
January 1, 2017: Journal of Evidence-based Complementary & Alternative Medicine
https://www.readbyqxmd.com/read/28817265/highly-efficient-performance-and-conversion-pathway-of-photocatalytic-no-oxidation-on-sro-clusters-amorphous-carbon-nitride
#13
Wen Cui, Jieyuan Li, Fan Dong, Yanjuan Sun, Guangming Jiang, Wanglai Cen, Shun Cheng Lee, Zhongbiao Wu
This work demonstrates the first molecular-level conversion pathway of NO oxidation over a novel SrO-clusters@amorphous carbon nitride (SCO-ACN) photocatalyst, which is synthesized via co-pyrolysis of urea and SrCO3. The inclusion of SrCO3 is crucial in the formation of the amorphous carbon nitride (ACN) and SrO clusters by attacking the intralayer hydrogen bonds at the edge sites of graphitic carbon nitride (CN). The amorphous nature of ACN can promote the transportation, migration, and transformation of charge carriers on SCO-ACN...
August 17, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28817261/the-effect-of-particulate-matter-mineral-composition-on-environmentally-persistent-free-radical-epfr-formation
#14
Elisabeth Feld-Cook, Gudrun Lisa Bovenkamp-Langlois, Slawomir M Lomnicki
Environmentally Persistent Free Radicals (EPFRs) are newly discovered, long-lived surface bound radicals that form on combustion borne particulates, such as fly ash. They are the result of a series of reactions between organic aromatics and metal oxides. Fly ashes contain varying concentrations of metal oxides, calcium and sulfur, which leads to differences in EPFR concentrations. To further investigate the relationship of fly ash composition and EPFR formation in a less complex matrix, surrogate fly ashes were synthesized to mimic the presence of their major mineral components, including metal oxides, calcium and sulfur...
August 17, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28816630/glycoproteins-and-polysaccharides-are-the-main-class-of-active-constituents-required-for-lymphocyte-stimulation-and-antigen-specific-immune-response-induction-by-traditional-medicinal-herbal-plants
#15
Young-Ok Son, Sung-Ho Kook, Jeong-Chae Lee
Traditional herbal remedies stimulate and modulate the immune system, and it is thought that their glycoproteins and polysaccharides are responsible for this activity. We prepared crude water, protein, and polysaccharide extracts from Atractylodes macrocephala Koidz, Helianthus annuus L., Scutellaria barbata D. Don, and Hedyotis diffusa Willd, respectively, and compared their immune-stimulating activities in vitro and in vivo. All protein and polysaccharide samples of the plants led to greater lymphocyte proliferation and TNF-α and IL-6 production in cultured splenocytes than did the crude water extracts at the same concentrations tested...
August 17, 2017: Journal of Medicinal Food
https://www.readbyqxmd.com/read/28815692/amelioration-of-atopic-like-skin-conditions-in-nc-tnd-mice-by-topical-application-with-distilled-alpinia-intermedia-gagnep-extracts
#16
Yosuke Amagai, Chihiro Katsuta, Yoshihiro Nomura, Kumiko Oida, Kenshiro Matsuda, Hyosun Jang, Ginnae Ahn, Tetsuyoshi Hamasaki, Hiroshi Matsuda, Akane Tanaka
Alpinia intermedia, a perennial plant that belongs to the Zingiberaceae family, has been used in folk medicine for a long time in the southern region of Japan. Because skin care is an effective approach that enables patients to manage their atopic dermatitis (AD), various herbal ingredients with few adverse effects have been evaluated for use in AD patients in recent years. In this study, we examined whether distilled extracts obtained from A. intermedia were beneficial for AD-like skin conditions in NC/Tnd mice...
August 16, 2017: Journal of Dermatology
https://www.readbyqxmd.com/read/28815433/new-insights-on-the-green-synthesis-of-metallic-nanoparticles-using-plant-and-waste-biomaterials-current-knowledge-their-agricultural-and-environmental-applications
#17
Rijuta Ganesh Saratale, Ganesh Dattatraya Saratale, Han Seung Shin, Jaya Mary Jacob, Arivalagan Pugazhendhi, Mukesh Bhaisare, Gopalakrishanan Kumar
Nanotechnology is a rapidly growing scientific field and has attracted a great interest over the last few years because of its abundant applications. Green nanotechnology is a multidisciplinary field that has emerged as a rapidly developing research area, serving as an important technique that emphasize on making the procedure which are clean, non-hazardous, and especially environmentally friendly, in contrast with chemical and physical methods currently employed for nanosynthesis. The biogenic routes could be termed green as these do not involve the use of highly toxic chemicals or elevated energy inputs during the synthesis...
August 16, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28814539/forward-a-registry-and-longitudinal-clinical-database-to-study-fragile-x-syndrome
#18
Stephanie L Sherman, Sharon A Kidd, Catharine Riley, Elizabeth Berry-Kravis, Howard F Andrews, Robert M Miller, Sharyn Lincoln, Mark Swanson, Walter E Kaufmann, W Ted Brown
BACKGROUND AND OBJECTIVE: Advances in the care of patients with fragile X syndrome (FXS) have been hampered by lack of data. This deficiency has produced fragmentary knowledge regarding the natural history of this condition, healthcare needs, and the effects of the disease on caregivers. To remedy this deficiency, the Fragile X Clinic and Research Consortium was established to facilitate research. Through a collective effort, the Fragile X Clinic and Research Consortium developed the Fragile X Online Registry With Accessible Research Database (FORWARD) to facilitate multisite data collection...
June 2017: Pediatrics
https://www.readbyqxmd.com/read/28813695/risk-based-remediation-of-polluted-sites-a-critical-perspective
#19
REVIEW
Saranya Kuppusamy, Kadiyala Venkateswarlu, Mallavarapu Megharaj, Srinithi Mayilswami, Yong Bok Lee
Sites contaminated with chemical pollutants represent a growing challenge, and remediation of such lands is of international concern. Risk-based land management (RBLM) is an emerging approach that integrates risk assessment practices with more traditional site-specific investigations and remediation activities. Developing countries are yet to adopt RBLM strategies for remediation. RBLM is considered to be practical, scientifically defensible and cost-efficient. However, it is inherently limited by: firstly, the accuracy of risk assessment models used; secondly, ramifications of the fact that they are more likely to leave contamination in place; and thirdly, uncertainties involved and having to consider the total concentrations of all contaminants in soils that overestimate the potential risks from exposure to the contaminants...
August 9, 2017: Chemosphere
https://www.readbyqxmd.com/read/28813585/association-of-general-surgery-resident-remediation-and-program-director-attitudes-with-resident-attrition
#20
Alexander C Schwed, Steven L Lee, Edgardo S Salcedo, Mark E Reeves, Kenji Inaba, Richard A Sidwell, Farin Amersi, Chandrakanth Are, Tracey D Arnell, Richard B Damewood, Daniel L Dent, Timothy Donahue, Jeffrey Gauvin, Thomas Hartranft, Garth R Jacobsen, Benjamin T Jarman, Marc L Melcher, John D Mellinger, Jon B Morris, Mark Nehler, Brian R Smith, Mary Wolfe, Amy H Kaji, Christian de Virgilio
Importance: Previous studies of resident attrition have variably included preliminary residents and likely overestimated categorical resident attrition. Whether program director attitudes affect attrition has been unclear. Objectives: To determine whether program director attitudes are associated with resident attrition and to measure the categorical resident attrition rate. Design, Setting, and Participants: This multicenter study surveyed 21 US program directors in general surgery about their opinions regarding resident education and attrition...
August 16, 2017: JAMA Surgery
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