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https://www.readbyqxmd.com/read/28805161/eco-friendly-and-biocompatible-crosslinked-carboxymethylcellulose-hydrogels-as-adsorbents-for-the-removal-of-organic-dye-pollutants-for-environmental-applications
#1
Nádia S V Capanema, Alexandra A P Mansur, Herman S Mansur, Anderson C de Jesus, Sandhra M Carvalho, Poliane Chagas, Luiz C de Oliveira
In this study new eco-friendly hydrogel adsorbents were synthesized based on carboxymethylcellulose (CMC, degree of substitution DS = 0.7) chemically crosslinked with citric acid (CA) using a green process in aqueous solution and applied for the adsorption of methylene blue (MB). Spectroscopic analyses demonstrated the mechanism of crosslinking through the reaction of hydroxyl functional groups from CMC with CA. These CMC hydrogels showed very distinct morphological features dependent on the extension of crosslinking and their nanomechanical properties were drastically increased by approximately 300% after crosslinking with 20% CA (e...
August 13, 2017: Environmental Technology
https://www.readbyqxmd.com/read/28804670/synthesis-and-characterization-of-mixed-iron-manganese-oxide-nanoparticles-and-their-application-for-efficient-nickel-ion-removal-from-aqueous-samples
#2
Alessandro Buccolieri, Antonio Serra, Giuseppe Maruccio, Anna Grazia Monteduro, Sanosh Kunjalukkal Padmanabhan, Antonio Licciulli, Valentina Bonfrate, Luca Salvatore, Daniela Manno, Lucio Calcagnile, Gabriele Giancane
Mixed iron-manganese oxide nanoparticles, synthesized by a simple procedure, were used to remove nickel ion from aqueous solutions. Nanostructures, prepared by using different weight percents of manganese, were characterized by transmission electron microscopy, selected area diffraction, X-ray diffraction, Raman spectroscopy, and vibrating sample magnetometry. Adsorption/desorption isotherm curves demonstrated that manganese inclusions enhance the specific surface area three times and the pores volume ten times...
2017: Journal of Analytical Methods in Chemistry
https://www.readbyqxmd.com/read/28803570/decontamination-of-an-extracorporeal-membrane-oxygenator-contaminated-with-mycobacterium-chimaera
#3
Mark I Garvey, Natalie Phillips, Craig W Bradley, Elisabeth Holden
Water samples taken from extracorporeal membrane oxygenator (ECMO) devices used at University Hospitals Birmingham yielded high total viable counts (TVCs) containing a variety of microorganisms, including M. chimaera. Disinfection resulted in the reduction of TVCs and eradication of Mycobacterium chimaera. Weekly disinfection and water sampling are required to manage the water quality in these devices. Infect Control Hosp Epidemiol 2017;1-3.
August 14, 2017: Infection Control and Hospital Epidemiology
https://www.readbyqxmd.com/read/28803549/comparative-gut-microbiota-and-resistome-profiling-of-intensive-care-patients-receiving-selective-digestive-tract-decontamination-and-healthy-subjects
#4
Elena Buelow, Teresita D J Bello González, Susana Fuentes, Wouter A A de Steenhuijsen Piters, Leo Lahti, Jumamurat R Bayjanov, Eline A M Majoor, Johanna C Braat, Maaike S M van Mourik, Evelien A N Oostdijk, Rob J L Willems, Marc J M Bonten, Mark W J van Passel, Hauke Smidt, Willem van Schaik
BACKGROUND: The gut microbiota is a reservoir of opportunistic pathogens that can cause life-threatening infections in critically ill patients during their stay in an intensive care unit (ICU). To suppress gut colonization with opportunistic pathogens, a prophylactic antibiotic regimen, termed "selective decontamination of the digestive tract" (SDD), is used in some countries where it improves clinical outcome in ICU patients. Yet, the impact of ICU hospitalization and SDD on the gut microbiota remains largely unknown...
August 14, 2017: Microbiome
https://www.readbyqxmd.com/read/28799790/review-comparison-of-the-effectiveness-of-decontaminating-strategies-for-fresh-fruits-and-vegetables-and-related-limitations
#5
Jae-Hyun Yoon, Sun-Young Lee
Given that it should be aware of the nutritional benefits, resulting from the consumption of fresh fruits and vegetables consumed raw and/or minimally processed, comparing the efficacy of different individual sanitizing methods against the major food-borne pathogens localized in fresh commodities is of much importance; these products are easily vulnerable to the microbial contamination. In this review, the current propensity of alternative sanitizing methods was introduced, as well as principal elements for deteriorating the cleaning effects were also discussed...
August 11, 2017: Critical Reviews in Food Science and Nutrition
https://www.readbyqxmd.com/read/28799167/isolation-and-characterisation-of-a-novel-deoxynivalenol-transforming-strain-paradevosia-shaoguanensis-ddb001-from-wheat-field-soil
#6
Yang Wang, Honghai Zhang, Chen Zhao, Yitao Han, Yuchun Liu, Xiaolin Zhang
A strain DDB001 having an ability to remove DON was successfully isolated from wheat field soil. On the basis of phenotypic, genotypic, and phylogenetic data, the strain DDB001 was identified as Paradevosia shaoguanensis. Strain DDB001 could grow well and thoroughly eliminate 200 mg l(-1) of DON in complete growth medium, but it could not utilise DON as the sole carbon source for growth in mineral salt medium. Analysing DON transformation products by HPLC-MS assumed that the strain could transform DON into a less toxic stereoisomer, 3-epi-deoxynivalenol (3-epi-DON)...
August 11, 2017: Letters in Applied Microbiology
https://www.readbyqxmd.com/read/28797807/impact-of-oral-gut-decontamination-on-staphylococcus-aureus-colonization-in-patients-undergoing-allogeneic-hematopoietic-stem-cell-transplantation
#7
C Matthias Wilk, Isabel Weber, Kati Seidl, Carole Rachmühl, Anne Holzmann-Bürgel, Antonia M S Müller, Stefan P Kuster, Urs Schanz, Annelies S Zinkernagel
Recipients of allogeneic hematopoietic stem cell transplantation (allo-HSCT) are severely immunocompromised and at increased risk for infections. In this prospective, observational, single-center study including 110 HSCT-recipients, the S. aureus colonization rate was reduced from 12% to 0% (p<0.001) following peri-transplant oral gut decontamination. No invasive S. aureus infections were observed.
August 7, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28797573/digestive-decontamination-in-burn-patients-a-systematic-review-of-randomized-clinical-trials-and-observational-studies
#8
REVIEW
Mercedes Rubio-Regidor, Ana Martín-Pellicer, Luciano Silvestri, Hendrik K F van Saene, José A Lorente, Miguel A de la Cal
OBJECTIVE: The objective of this systematic review is to assess the effect of selective digestive decontamination (SDD) or non-absorbable enteral antibiotics (EA) on mortality, the incidence of infection and its adverse effects in burn patients. MATERIAL AND METHODS: Systematic review of randomized clinical trials (RCT) or observational studies enrolling burn patients, and comparing SDD or EA prophylaxis with placebo or no treatment. The search includes Pubmed/Medline, EMBASE, WOS, Cochrane Library (1970-2015)...
August 7, 2017: Burns: Journal of the International Society for Burn Injuries
https://www.readbyqxmd.com/read/28795644/efficiency-of-organic-acid-preparations-for-the-elimination-of-naturally-occurring-salmonella-in-feed-material
#9
Sonja Axmann, Veronika Kolar, Andreas Adler, Irmengard Strnad
Salmonella can enter animal stocks via feedstuffs, thus posing not only an infection risk for animals, but also threatening to contaminate food of animal origin and finally humans. Salmonella contamination in feeding stuffs is still a recurring and serious issue in animal production (especially for poultry sector) and is regularly detected upon self-monitoring by feed companies (self-checks) and official inspections authorities. Operators within the feed chain in certain cases need to use hygienic condition enhancers, such as organic acids, to improve the quality of feed for animal nutrition providing additional guarantees for the protection of animal and public health...
August 10, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28795167/effective-uv-ozone-irradiation-method-for-decontamination-of-hydroxyapatite-surfaces
#10
Keisuke Yasuda, Yohei Okazaki, Yasuhiko Abe, Kazuhiro Tsuga
The purpose of this study was to establish whether UV/ozone (O3) irradiation method can effectively decontaminate hydroxyapatite surfaces, including those modified by the treatment with 30% phosphoric acid solution through morphological and chemical surface analyses (surface roughness, X-ray photoelectron spectroscopy and wettability), and to evaluate the in vitro response of osteoblast-like MC3T3-E1 cells to the modified hydroxyapatite surface decontaminated via this method. The amount of carbon and the contact angle of hydroxyapatite surfaces were significantly decreased by UV/O3 irradiation that lasted for ≥ 5 and ≥ 3 min, respectively (P < 0...
August 2017: Heliyon
https://www.readbyqxmd.com/read/28794943/decontamination-and-remediation-of-the-sulfur-mustard-simulant-cees-with-off-the-shelf-reagents-in-solution-and-gel-states-a-proof-of-concept-study
#11
Jennifer R Hiscock, Gianluca P Bustone, Ewan R Clark
The decontamination and remediation of sulfur mustard chemical warfare agents remains an ongoing challenge. Herein, we report the use of "off-the-shelf" metal salts alongside commercially available peroxides to catalyze the degradation of the simulant 2-chloroethyl ethyl sulfide (CEES) in solution and encapsulated within a supramolecular gel.
August 2017: ChemistryOpen
https://www.readbyqxmd.com/read/28794393/preventive-measures-and-lifestyle-habits-against-exertional-heat-illness-in-radiation-decontamination-workers
#12
Shota Endo, Takeyasu Kakamu, Sei Sato, Tomoo Hidaka, Tomohiro Kumagai, Shinichi Nakano, Kikuo Koyama, Tetsuhito Fukushima
OBJECTIVES: The aim of this study was to reveal the current state of preventive measures and lifestyle habits against heat illness in radiation decontamination workers and to examine whether young radiation decontamination workers take less preventive measures and have worse lifestyle habits than the elder workers. METHODS: This was a cross-sectional study. Self-administered questionnaires were sent to 1,505 radiation decontamination workers in Fukushima, Japan...
August 8, 2017: Journal of Occupational Health
https://www.readbyqxmd.com/read/28793943/decontamination-of-hospital-surfaces-with-multijet-cold-plasma-a-method-to-enhance-infection-prevention-and-control
#13
Orla J Cahill, Tânia Claro, Attilio A Cafolla, Niall T Stevens, Stephen Daniels, Hilary Humphreys
OBJECTIVE To evaluate the efficacy of a multijet cold-plasma system and its efficacy in decontaminating 2 surfaces commonly found in hospitals DESIGN An in vitro study of common causes of healthcare-acquired infection METHODS Log10 9 cultures of methicillin-resistant Staphylococcus aureus, vancomycin-resistant enterococci, extended spectrum β-lactamase-producing Escherichia coli, and Acinetobacter baumannii were applied to 5-cm2 sections of stainless steel and mattress. Human serum albumin (HSA) was used as a proxy marker for organic material, and atomic force microscopy (AFM) was used to study the impact on bacterial cell structure...
August 10, 2017: Infection Control and Hospital Epidemiology
https://www.readbyqxmd.com/read/28782997/pathogen-decontamination-of-food-crop-soil-a-review
#14
Joshua B Gurtler
The purpose of this review is to delineate means of decontaminating soil. This information might be used to mitigate soil-associated risks of foodborne pathogens. The majority of the research in the published literature involves inactivation of plant pathogens in soil, i.e., those pathogens harmful to fruit and vegetable production and ornamental plants. Very little has been published regarding the inactivation of foodborne human pathogens in crop soil. Nevertheless, because decontamination techniques for plant pathogens might also be useful methods for eliminating foodborne pathogens, this review also includes inactivation of plant pathogens, with appropriate discussion and comparisons, in the hopes that these methods may one day be validated against foodborne pathogens...
August 7, 2017: Journal of Food Protection
https://www.readbyqxmd.com/read/28782951/rapid-simultaneous-removal-of-toxic-anions-hseo3-%C3%A2-seo3-2-seo4-2-and-metals-hg2-cu2-and-cd2-by-mos42-intercalated-layered-double-hydroxide
#15
Lijiao Ma, Saiful M Islam, Chengliang Xiao, Jing Zhao, Hongyun Liu, Mengwei Yuan, Genban Sun, Huifeng Li, Shulan Ma, Mercouri G Kanatzidis
We demonstrate fast, highly efficient concurrent removal of toxic oxoanions of Se(VI) (SeO42-) and Se(IV) (SeO32-/HSeO3‾) and heavy metal ions of Hg2+, Cu2+ and Cd2+ by the MoS42- intercalated Mg/Al layered double hydroxide (MgAl-MoS4-LDH, abbr. MoS4-LDH). Using the MoS4-LDH as an adsorbent, we observe that the presence of Hg2+ ions greatly promotes the capture of SeO42-, while the three metal ions (Hg2+, Cu2+, Cd2+) enable a remarkable improvement in the removal of SeO32-/HSeO3‾. For the pair Se(VI)+Hg2+, the MoS4-LDH exhibits outstanding removal rates (> 99...
August 7, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28778008/distribution-of-137-cs-on-components-in-urban-area-four-years-after-the-fukushima-dai-ichi-nuclear-power-plant-accident
#16
K Yoshimura, K Saito, K Fujiwara
Distribution of (137)Cs on components in urban areas such as roofs and roads is crucial for evaluating the behavior of radiocesium and ambient dose rates in the area. This study evaluated relative (137)Cs inventories, which are defined as the relative values of (137)Cs inventory on each component to that on a nearby permeable plane field, for 11 buildings in the evacuation zone about four years after the Fukushima Dai-ichi Nuclear Power Plant accident. The average relative inventory of paved ground accounted for 0...
August 1, 2017: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/28776296/synthesis-of-piperazine-functionalized-magnetic-sporopollenin-a-new-organic-inorganic-hybrid-material-for-the-removal-of-lead-ii-and-arsenic-iii-from-aqueous-solution
#17
Naqhiyah Farhan Ahmad, Muhammad Afzal Kamboh, Hamid Rashidi Nodeh, Siti Nadiah Binti Abd Halim, Sharifah Mohamad
The present work describes the successful functionalization/magnetization of bio-polymeric spores of Lycopodium clavatum (sporopollenin) with 1-(2-hydroxyethyl) piperazine. Analytical techniques, i.e., Fourier transform infrared (FT-IR), field emission scanning electron microscope (FESEM), energy-dispersive X-ray spectroscopy (EDS), and vibrating sample magnetometer (VSM), were used to confirm the formation of 1-(2-hydroxyethyl) piperazine-functionalized magnetic sporopollenin (MNPs-Sp-HEP). The proposed adsorbent (MNPs-Sp-HEP) was used for the removal of noxious Pb(II) and As(III) metal ions from aqueous media through a batch-wise method...
August 3, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28772991/extractant-immobilization-in-alginate-capsules-matrix-and-mononuclear-type-application-to-pb-ii-sorption-from-hcl-solutions
#18
Janette Alba, Ricardo Navarro, Imelda Saucedo, Thierry Vincent, Eric Guibal
The decontamination of dilute industrial effluents is a critical challenge for decreasing the environmental impact of mining and metallurgical activities. As an alternative to conventional processes, new extractant impregnated resins (EIRs) have been synthesized by the immobilization of Cyanex 301 and Cyanex 302 in alginate capsules using two different procedures (matrix-type immobilization vs. mononuclear encapsulation). These materials have been tested for Pb(II) sorption from acidic solutions. The Langmuir equation fitted well the sorption isotherms and the maximum sorption capacities vary between 24 and 80 mg·g(-1) at pH 1, depending on the type and loading of the extractant in the EIR...
June 9, 2017: Materials
https://www.readbyqxmd.com/read/28772331/-pre-operative-evaluation-of-patients-undergoing-total-joint-arthroplasty-what-is-essential
#19
Holger Haas, Christian D Weber
Background A thorough pre-operative evaluation is required prior to total joint arthroplasty (TJA). The objective of screening is to identify patient- and procedure-related risk constellations. Pre-operative diagnostic measures are vital in order to anticipate, reduce or even eliminate threats to patient safety. Furthermore, the clinical and radiographical workup may confirm the indication and type of surgical procedure, but this is not the subject of this article. Objective An overview of the current literature on pre-operative diagnostic principles is presented...
August 3, 2017: Zeitschrift Für Orthopädie und Unfallchirurgie
https://www.readbyqxmd.com/read/28771410/international-variability-in-gastrointestinal-decontamination-with-acute-poisonings
#20
Santiago Mintegi, Stuart R Dalziel, Beatriz Azkunaga, Javier Prego, Eunate Arana-Arri, Yordana Acedo, Lorea Martinez-Indart, Javier Benito, Nathan Kuppermann
BACKGROUND AND OBJECTIVES: Identifying international differences in the management of acute pediatric poisonings may help improve the quality of care. The objective of this study was to assess the international variation and appropriateness of gastrointestinal decontamination (GID) procedures performed in children and adolescents who present with acute poisonings to emergency departments. METHODS: This was an international, multicenter, cross-sectional prospective study including children <18 years with poisoning exposures presenting to 105 emergency departments in 20 countries from 8 global regions belonging to the Pediatric Emergency Research Networks...
August 2017: Pediatrics
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