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https://www.readbyqxmd.com/read/28942248/metal-free-carbon-materials-catalyzed-sulfate-radical-based-advanced-oxidation-processes-a-review-on-heterogeneous-catalysts-and-applications
#1
REVIEW
Qingxia Zhao, Qiming Mao, Yaoyu Zhou, Jianhong Wei, Xiaocheng Liu, Junying Yang, Lin Luo, Jiachao Zhang, Hong Chen, Hongbo Chen, Lin Tang
In recent years, advanced oxidation processes (AOPs), especially sulfate radical based AOPs have been widely used in various fields of wastewater treatment due to their capability and adaptability in decontamination. Recently, metal-free carbon materials catalysts in sulfate radical production has been more and more concerned because these materials have been demonstrated to be promising alternatives to conventional metal-based catalysts, but the review of metal-free catalysts is rare. The present review outlines the current state of knowledge on the generation of sulfate radical using metal-free catalysts including carbon nanotubes, graphene, mesoporous carbon, activated carbon, activated carbon fiber, nanodiamond...
September 13, 2017: Chemosphere
https://www.readbyqxmd.com/read/28939316/controlling-a-possible-outbreak-of-candida-auris-infection-lessons-learnt-from-multiple-interventions
#2
Manisha Biswal, Shivaprakash M Rudramurthy, Neha Jain, A S Shamanth, Dipti Sharma, Kajal Jain, L N Yaddanapudi, A Chakrabarti
BACKGROUND: Multi-drug-resistant Candida auris infection has been reported from five continents in recent years. The prevalence of C. auris invasive infection has been estimated at 5.3% for intensive care acquired candidaemia, in India. The transmission of the organism between the patients and from environment to patients is rapid. AIM: To understand the intra-hospital dynamics of C. auris transmission and determine the possible interventions to prevent its spread...
September 19, 2017: Journal of Hospital Infection
https://www.readbyqxmd.com/read/28938866/the-interpretation-of-hair-analysis-for-drugs-and-drug-metabolites
#3
Eva Cuypers, Robert J Flanagan
INTRODUCTION: Head hair analysis for drugs and drug metabolites has been used widely with the aim of detecting exposure in the weeks or months prior to sample collection. However, inappropriate interpretation of results has likely led to serious miscarriages of justice, especially in child custody cases. OBJECTIVE: The aim of this review is to assess critically what can, and perhaps more importantly, what cannot be claimed as regards the interpretation of hair test results in a given set of circumstances in order to inform future testing...
September 22, 2017: Clinical Toxicology
https://www.readbyqxmd.com/read/28938202/effect-of-different-diode-laser-wavelengths-on-root-dentin-decontamination-infected-with-enterococcus-faecalis
#4
Caroline Cristina Borges, Carlos Estrela, Fabiane Carneiro Lopes, Regina Guenka Palma-Dibb, Jesus Djalma Pecora, Cyntia Rodrigues De Araújo Estrela, Manoel Damião de Sousa-Neto
The objective of this study was to evaluate the antibacterial effect and the ultrastructural alterations of diode laser with different wavelengths (808nm and 970nm) and its association with irrigating solutions (2.5% sodium hypochlorite and 2% chlorhexidine) in root dentin contaminated by a five days biofilm. Thirteen uniradicular teeth were sectioned into 100 dentin intraradicular blocks. Initially, the blocks were immersed for 5min in 17% EDTA and washed with distilled water for 5min, then samples were sterilized for 30min at 120°C...
September 13, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28938171/behavior-of-radioactive-cesium-during-incineration-of-radioactively-contaminated-wastes-from-decontamination-activities-in-fukushima
#5
Hiroshi Fujiwara, Hidetoshi Kuramochi, Kazutaka Nomura, Tomoharu Maeseto, Masahiro Osako
Large volumes of decontamination wastes (DW) generated by off-site decontamination activities in Fukushima Prefecture have been incinerated since 2015. The behavior of radioactive cesium during incineration of DW was investigated at a working incineration plant. The incineration discharged bottom ash (BA) and fly ash (FA) with similar levels of radiocesium, and the leachability of the radiocesium from both types of ash was very low (<1%). These results are significantly different from those obtained for the incineration of contaminated municipal solid waste (CMSW) reported in earlier studies...
September 18, 2017: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/28932363/cadmium-toxicity-and-treatment-an-update
#6
REVIEW
Mehrdad Rafati Rahimzadeh, Mehravar Rafati Rahimzadeh, Sohrab Kazemi, Ali-Akbar Moghadamnia
Cadmium poisoning has been reported from many parts of the world. It is one of the global health problems that affect many organs and in some cases it can cause deaths annually. Long-term exposure to cadmium through air, water, soil, and food leads to cancer and organ system toxicity such as skeletal, urinary, reproductive, cardiovascular, central and peripheral nervous, and respiratory systems. Cadmium levels can be measured in the blood, urine, hair, nail and saliva samples. Patients with cadmium toxicity need gastrointestinal tract irrigation, supportive care, and chemical decontamination traditional-based chelation therapy with appropriate new chelating agents and nanoparticle-based antidotes...
2017: Caspian Journal of Internal Medicine
https://www.readbyqxmd.com/read/28929911/understanding-the-effects-of-intermittent-shedding-on-the-transmission-of-infectious-diseases-example-of-salmonellosis-in-pigs
#7
Glenn E Lahodny, Raju Gautam, Renata Ivanek
A number of environmentally transmitted infectious diseases are characterized by intermittent infectiousness of infected hosts. However, it is unclear whether intermittent infectiousness must be explicitly accounted for in mathematical models for these diseases or if a simplified modelling approach is acceptable. To address this question we study the transmission of salmonellosis between penned pigs in a grower-finisher facility. The model considers indirect transmission, growth of free-living Salmonella within the environment, and environmental decontamination...
December 2017: Journal of Biological Dynamics
https://www.readbyqxmd.com/read/28923588/development-of-silver-nanoparticle-doped-adsorbents-for-the-separation-and-recovery-of-radioactive-iodine-from-alkaline-solutions
#8
Taewoon Kim, Seung-Kon Lee, Suseung Lee, Jun Sig Lee, Sang Wook Kim
Removing radioactive iodine from solutions containing fission products is essential for nuclear facility decontamination, radioactive waste treatment, and medical isotope production. For example, the production of high-purity fission (99)Mo by irradiation of (235)U with neutrons involves the removal of iodine from an alkaline solution of the irradiated target (which contains numerous fission products and a large quantity of aluminate ions) using silver-based materials or anion-exchange resins. To be practically applicable, the utilized iodine adsorbent should exhibit a decontamination factor of at least 200...
November 2017: Applied Radiation and Isotopes
https://www.readbyqxmd.com/read/28920114/nano-and-micromotors-for-cleaning-polluted-waters-focused-review-on-pollutant-removal-mechanisms
#9
REVIEW
Hamed Eskandarloo, Arkaye Kierulf, Alireza Abbaspourrad
Nano- and micromotors are machines designed to self-propel and-in the process of propelling themselves-perform specialized tasks like cleaning polluted waters. These motors offer distinct advantages over conventionally static decontamination methods, owing to their ability to move around and self-mix-which heightens the interaction between their active sites and target pollutants-thus improving their speed and efficiency, which could potentially decrease treatment times and costs. In the last decade, considerable research efforts have been expended on exploring various mechanisms by which these motors can self-propel and remove pollutants, proving that the removal of oil droplets, heavy metals, and organic compounds using these synthetic motors is possible...
September 18, 2017: Nanoscale
https://www.readbyqxmd.com/read/28917619/a-chlorhexidine-solution-reduces-aerobic-organism-growth-in-operative-splash-basins-in-a-randomized-controlled-trial
#10
Kevin E Lindgren, Christopher E Pelt, Mike B Anderson, Christopher L Peters, Emily S Spivak, Jeremy M Gililland
BACKGROUND: Despite recommendations against the use of splash basins, due to the potential of bacterial contamination, our observation has been that they continue to be used in operating theaters. In hopes of decontaminating the splash basin, we sought to determine if the addition of chlorhexidine gluconate (CHG) would eliminate aerobic bacterial growth within the splash basin. METHODS: After Institutional Review Board approval, we began enrollment in a randomized controlled trial comparing 2 splash basin solutions...
August 24, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28916464/adhesion-procedure-for-cad-cam-resin-crown-bonding-reduction-of-bond-strengths-due-to-artificial-saliva-contamination
#11
Asuka Kawaguchi-Uemura, Atsushi Mine, Mariko Matsumoto, Yuko Tajiri, Mami Higashi, Tomoshige Kabetani, Ryosuke Hagino, Dai Imai, Takuya Minamino, Jiro Miura, Hirofumi Yatani
PURPOSE: The present study aimed to elucidate how saliva contamination affects microtensile bond strength of resin cement to CAD/CAM resin blocks and identify a decontamination method that can restore original bond strength. METHODS: The KATANA AVENCIA block (Kuraray Noritake Dental) was sandblasted on the adherend surface (P-Co group). Then, the block was contaminated with artificial saliva (Saliveht Aerosol, Teijin). Air dry (N-Co), sandblasting (Sb) and phosphate acid cleaning (AT) groups were prepared...
September 12, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28914834/-plasma-management-in-complex-treatment-of-late-inflammatory-complications-after-injection-contour-plasty-with-polyacrylamide-gel
#12
A M Shulutko, E G Osmanov, I V Novikova, S L Chochiya, V P Seredin, A D Macharadze
AIM: To improve the results of treatment of late inflammatory complications after injection contour plasty with polyacrylamide gel. MATERIAL AND METHODS: The authors analyze treatment of 21 patients with late septic complications of body contour plasty with polyacrylamide gel (PAGE) for the period 2010-2015. Mean age of women was 47.4 years. Time after primary intervention was 10-22 years. The depth of soft tissue lesion corresponded to II-III grade by D. Ahrenholz classification (1991), length - from 67 to 180 cm2...
2017: Khirurgiia
https://www.readbyqxmd.com/read/28914597/combination-of-ultrasonic-decontamination-soft-tissue-curettage-and-submucosal-air-polishing-with-povidone-iodine-application-for-non-surgical-therapy-of-peri-implantitis-12-months-clinical-outcomes
#13
Jamal M Stein, Christian Hammächer, Sareh Said-Yekta Michael
BACKGROUND: The aim of this study was to evaluate the clinical outcomes of a concept for non-surgical peri-implantitis combining stepwise mechanical debridement measures with adjuvant Povidone-iodine application with and without systemic antibiotics. METHODS: 45 patients with chronic periodontitis comprising 164 screw-typed implants with peri-implantitis were included. Peri-implantitis was defined as radiographic bone loss of >2 mm, probing pocket depth (PD) ≥5 mm with bleeding on probing (BOP)...
September 15, 2017: Journal of Periodontology
https://www.readbyqxmd.com/read/28906461/%C3%AE-conotoxin-decontamination-protocol-evaluation-what-works-and-what-doesn-t
#14
Matthew W Turner, John R Cort, Owen M McDougal
Nine publically available biosafety protocols for safely handling conotoxin peptides were tested to evaluate their decontamination efficacy. Circular dichroism (CD) spectroscopy and mass spectrometry (MS) were used to assess the effect of each chemical treatment on the secondary and primary structure of α-CTx MII (L10V, E11A). Of the nine decontamination methods tested, treatment with 1% (m/v) solution of the enzymatic detergent Contrex™ EZ resulted in a 76.8% decrease in α-helical content as assessed by the mean residue ellipticity at 222 nm, and partial peptide digestion was demonstrated using high performance liquid chromatography mass spectrometry (HPLC-MS)...
September 14, 2017: Toxins
https://www.readbyqxmd.com/read/28905284/effect-of-cadmium-bioavailability-in-food-on-its-compartmentalisation-in-carabids
#15
Agnieszka J Bednarska, Zuzanna M Świątek, Karolina Paciorek, Natalia Kubińska
Metals assimilated by organisms are sequestered in various compartments and some forms are more stable than others. Sequestration mechanisms used by invertebrates to detoxify metals and prevent interaction with important biomolecules include metal binding to proteins and other ligands, and storage in inorganic granules. The rate and extent at which metal concentrations in different compartments respond to metal concentrations in food and food characteristics has not received much attention, despite being of great relevance...
September 13, 2017: Ecotoxicology
https://www.readbyqxmd.com/read/28904186/stool-culture-for-the-diagnosis-of-pulmonary-tuberculosis-in-children
#16
Elisabetta Walters, Anne-Marie Demers, Marieke M van der Zalm, Andrew Whitelaw, Megan Palmer, Corné Bosch, Heather R Draper, Robert P Gie, Anneke C Hesseling
Bacteriological confirmation of Mycobacterium tuberculosis is achieved in the minority of young children with tuberculosis (TB), as specimen collection is resource-intensive and respiratory secretions are mostly paucibacillary, leading to limited sensitivity of available diagnostic tests. Although molecular tests are increasingly available globally, mycobacterial culture remains the gold standard for diagnosis and determination of drug susceptibility and is more sensitive than molecular methods for paucibacillary TB...
September 13, 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28903878/thermal-inactivation-of-avian-influenza-virus-in-poultry-litter-as-a-method-to-decontaminate-poultry-houses
#17
Christopher B Stephens, Erica Spackman
Removal of contaminated material from a poultry house during recovery from an avian influenza virus (AIV) outbreak is costly and labor intensive. Because AIV is not environmentally stable, heating poultry houses may provide an alternative disinfection method. The objective was to determine the time necessary to inactivate AIV in poultry litter at temperatures achievable in a poultry house. Low pathogenic (LP) AIV inactivation was evaluated between 10.0°-48.9°C, at ∼5.5°C intervals and highly pathogenic (HP) AIV inactivation was evaluated between 10...
September 15, 2017: Preventive Veterinary Medicine
https://www.readbyqxmd.com/read/28903604/remediation-of-contaminated-soils-by-biotechnology-with-nanomaterials-bio-behavior-applications-and-perspectives
#18
Xiaomin Gong, Danlian Huang, Yunguo Liu, Zhiwei Peng, Guangming Zeng, Piao Xu, Min Cheng, Rongzhong Wang, Jia Wan
Soil contamination caused by heavy metals and organic pollutants has drawn world-wide concern. Biotechnology has been applied for many years to the decontamination of soils polluted with organic and inorganic contaminants, and novel nanomaterials (NMs) has attracted much concern due to their high capacity for the removal/stabilization/degradation of pollutants. Recently, developing advanced biotechnology with NMs for the remediation of contaminated soils has become a hot research topic. Some researchers found that bioremediation efficiency of contaminated soils was enhanced by the addition of NMs, while others demonstrated that the toxicity of NMs to the organism negatively influenced the repair capacity of polluted soils...
September 13, 2017: Critical Reviews in Biotechnology
https://www.readbyqxmd.com/read/28902426/surgical-treatment-of-peri-implantitis-3-year-results-from-a-randomized-controlled-clinical-trial
#19
Olivier Carcuac, Jan Derks, Ingemar Abrahamsson, Jan L Wennström, Max Petzold, Tord Berglundh
OBJECTIVES: This study reports on the 3-year follow-up of patients enrolled in a randomized controlled clinical trial on surgical treatment of advanced peri-implantitis. MATERIAL & METHODS: 100 patients with advanced peri-implantitis were randomly assigned to one of four treatment groups. Surgical therapy aiming at pocket elimination was performed and, in three test groups, supplemented by either systemic antibiotics, use of an antiseptic agent for implant surface decontamination or both...
September 13, 2017: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/28894442/isolation-and-characterization-of-phenanthrene-degrading-bacteria-from-diesel-fuel-contaminated-antarctic-soils
#20
Alejandro Gran-Scheuch, Edwar Fuentes, Denisse M Bravo, Juan Cristobal Jiménez, José M Pérez-Donoso
Antarctica is an attractive target for human exploration and scientific investigation, however the negative effects of human activity on this continent are long lasting and can have serious consequences on the native ecosystem. Various areas of Antarctica have been contaminated with diesel fuel, which contains harmful compounds such as heavy metals and polycyclic aromatic hydrocarbons (PAH). Bioremediation of PAHs by the activity of microorganisms is an ecological, economical, and safe decontamination approach...
2017: Frontiers in Microbiology
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