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https://www.readbyqxmd.com/read/29145142/is-ozonation-environmentally-benign-for-reverse-osmosis-concentrate-treatment-four-level-analysis-on-toxicity-reduction-based-on-organic-matter-fractionation
#1
Jingxia Weng, Huichao Jia, Bing Wu, Bingcai Pan
Ozonation is a promising option to treat reverse osmosis concentrate (ROC). However, a systematic understanding and assessment of ozonation on toxicity reduction is insufficient. In this study, ROC sampled from a typical industrial park wastewater treatment plant of China was fractionated into hydrophobic acid (HOA), hydrophobic base (HOB), hydrophobic neutral (HON), and hydrophilic fraction (HI). Systematic bioassays covering bacteria, algae, fish, and human cell lines were conducted to reveal the role of ozonation in toxicity variation of the four ROC fractions...
October 10, 2017: Chemosphere
https://www.readbyqxmd.com/read/29140365/narrowband-silicon-waveguide-bragg-reflector-achieved-by-highly-ordered-graphene-oxide-gratings
#2
Yung-Jr Hung, Ya-Ching Liang, Chia-Wei Huang, Jyun-Fu Shih, Shih Hu, Tzu-Hsiang Yen, Chia-Wei Kao, Chun-Hu Chen
Graphene oxide (GO) ultrathin film can be wafer-scale deposited by spin coating, can be patterned by laser interference lithography and oxygen plasma etching, can be thinned atomically (0.26 nm/min) and oxidized by ozone treatment, and is a relatively transparent and low-refractive-index material compared to pristine graphene. All those unique properties prompt us to realize a low-loss (∼5  dB/cm), high-extinction-ratio (19 dB), and narrowband (0.425 nm) GO/silicon hybrid waveguide Bragg reflector by transferring 7-nm-thick GO gratings (n=1...
November 15, 2017: Optics Letters
https://www.readbyqxmd.com/read/29140304/ultra-fast-microwave-synthesis-of-zno-nanorods-on-cellulose-substrates-for-uv-sensor-applications
#3
Ana Pimentel, Ana Samouco, Daniela Nunes, Andreia Araújo, Rodrigo Martins, Elvira Fortunato
In the present work, tracing and Whatman papers were used as substrates to grow zinc oxide (ZnO) nanostructures. Cellulose-based substrates are cost-efficient, highly sensitive and environmentally friendly. ZnO nanostructures with hexagonal structure were synthesized by hydrothermal under microwave irradiation using an ultrafast approach, that is, a fixed synthesis time of 10 min. The effect of synthesis temperature on ZnO nanostructures was investigated from 70 to 130 °C. An Ultra Violet (UV)/Ozone treatment directly to the ZnO seed layer prior to microwave assisted synthesis revealed expressive differences regarding formation of the ZnO nanostructures...
November 15, 2017: Materials
https://www.readbyqxmd.com/read/29138017/angiotensin-converting-enzyme-inhibitors-enhance-the-hypotensive-effects-of-propofol-by-increasing-nitric-oxide-production
#4
Gustavo H Oliveira-Paula, Lucas C Pinheiro, Graziele C Ferreira, Waynice N P Garcia, Riccardo Lacchini, Luis V Garcia, Jose E Tanus-Santos
Propofol anesthesia is usually accompanied by hypotension. Studies have shown that the hypotensive effects of propofol increase in patients treated with angiotensin-converting enzyme inhibitors (ACEi). Given that both propofol and ACEi affect nitric oxide (NO) signaling, the present study tested the hypothesis that ACEi treatment induces pronounced hypotensive responses to propofol by increasing NO bioavailability. In this study we evaluated 65 patients, divided into three groups: hypertensive patients chronically treated with ACEi (HT-ACEi; n=21), hypertensive patients treated with other antihypertensive drugs instead of ACEi, such as angiotensin II receptor blockers, β-blockers or diuretics (HT; n=21) and healthy normotensive subjects (NT; n=23)...
November 11, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/29135140/-general-clinical-and-laboratory-and-instrumental-characteristics-of-the-chronic-nonbapterial-prostatite-with-the-inflammatory-component-in-men-of-the-first-period-of-mature-age
#5
Yu Yu Vinnik, V V Borisov
AIM: To investigate the course of CNPIC in young men treated with general and local ozone therapy. MATERIALS AND METHODS: 306 patients underwent standard treatment concurrently with local and systemic ozone therapy. Clinical-laboratory and instrumental parameters were evaluated before and after treatment. In addition, the blood flow of the prostate, prostatic urethra and skin at the projection point of the prostate was studied. RESULTS: Standard treatment of CNPIC with the concurrent use of general and local ozone therapy resulted in a reduction of pain intensity and severity of dysuria, improvement of the sexual function and quality of life of men...
October 2017: Urologii︠a︡
https://www.readbyqxmd.com/read/29134527/the-removal-of-cod-and-nh3-n-from-atrazine-production-wastewater-treatment-using-uv-o3-experimental-investigation-and-kinetic-modeling
#6
Liang Jing, Bing Chen, Diya Wen, Jisi Zheng, Baiyu Zhang
In this study, a UV/O3 hybrid advanced oxidation system was used to remove chemical oxygen demand (COD), ammonia nitrogen (NH3-N), and atrazine (ATZ) from ATZ production wastewater. The removal of COD and NH3-N, under different UV and O3 conditions, was found to follow pseudo-first-order kinetics with rate constants ranging from 0.0001-0.0048 and 0.0015-0.0056 min(-1), respectively. The removal efficiency of ATZ was over 95% after 180 min treatment, regardless the level of UV power. A kinetic model was further proposed to simulate the removal processes and to quantify the individual roles and contributions of photolysis, direct O3 oxidation, and hydroxyl radical (OH·) induced oxidation...
November 13, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29131335/shelf-life-characteristics-of-bread-produced-from-ozonated-wheat-flour
#7
Mohammed Obadi, Ke-Xue Zhu, Wei Peng, Abdellatif A Sulieman, Amer Ali Mahdi, Khalid Mohammed, Hui-Ming Zhou
The objective of this work was to study the effect of ozone treatment on the quality of bread and its shelf life. Flour was treated with ozone gas a rate of 5 L/min for 5, 15, 25, 35, and 45 min. Baking studies showed that bread made from flour treated with ozone for 15 min exhibited improved quality properties (in terms of specific volume, bread color, and crumb cell numbers). Expousre to ozone for shorter times did not cause obvious changes in the major volatile compounds of bread. A shelf life tests showed that ozone gas treatment influenced the extent of starch crystallinity...
November 13, 2017: Journal of Texture Studies
https://www.readbyqxmd.com/read/29131236/chronic-subdural-hematoma-associated-with-arachnoid-cyst-of-the-middle-fossa-surgical-treatment-and-mid-term-results-in-fifteen-patients
#8
Ahmet Murat Müslüman, Barış Özöner, Atilla Kirçelli, Songül Meltem Can, Adem Yilmaz, Ayça Kaldirimoğlu, Balkan Şahin
AIM: We report the neurological and radiological features, surgical management and Mid-term outcome in a series of patients with chronic subdural hematoma (CSDH) and associated ipsilateral arachnoid cyst (AC) of the middle fossa. MATERIAL AND METHODS: Between August 2004 and August 2012, 453 patients were treated with diagnosis of CSDH in our clinic. Of those, 15 patients had ipsilateral arachnoid cyst in the middle fossa. A single burr hole craniostomy was performed to drain the hematoma and the AC left intact at first in 14 patients, one patient had no surgical intervention...
October 18, 2017: Turkish Neurosurgery
https://www.readbyqxmd.com/read/29124641/the-mineralization-of-oxalic-acid-and-bio-treated-coking-wastewater-by-catalytic-ozonation-using-nickel-oxide
#9
Kaiyi Wu, Fengzhen Zhang, Haizhen Wu, Chaohai Wei
Coking wastewater after biological treatment still possesses potential environmental risk and should be mineralized further. This work focused on the mineralization of bio-treated coking wastewater using catalytic ozonation by NiO. First, oxalic acid, the typical by-product of advanced oxidation process (AOPs), was used to test the catalytic performance of NiOs, prepared by modified hydrothermal methods upon addition of different surfactants. This demonstrated that NiO upon addition of hexadecyltrimethylammonium (CTAB) had the best catalytic activity, due to its high concentration surface hydroxyl density and strong stability...
November 9, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29119959/-the-potential-of-the-non-pharmacological-methods-for-the-rehabilitation-and-prophylaxis-in-the-patients-suffering-from-with-atopic-dermatitis
#10
I V Kosheleva, O A Bitkina, N A Klivitskaya, L I Shadyzheva
This article was designed to discuss the therapeutic potential of various non-pharmacological and physiotherapeutic methods for the treatment and rehabilitation of the patients presenting with atopic dermatitis (AD) during the inter-recurrence period of the disease. The particular emphasis is placed on the physical agents most frequently used for the purpose with special reference to the combined therapy of atopic dermatitis in the adults and children and to their rehabilitation in the inter-exacerbation periods...
2017: Voprosy Kurortologii, Fizioterapii, i Lechebnoĭ Fizicheskoĭ Kultury
https://www.readbyqxmd.com/read/29119958/-the-experience-with-the-application-of-ozone-therapy-for-the-treatment-of-periodontitis-in-musicians-instrumentalists
#11
A V Kislitsyna, A G Volkov, N Zh Dikopova, S S Akhmedbaeva, A L Shishmareva
Playing various musical instruments is the cause of an additional load that affects the condition of dentition and of all organs and body systems at large. Each group of instruments is known to exert a specific impact on the health of the musicians including the undesirable influence on the state of thir oral cavity, such as a change of occlusion and irritation of oral mucosa. Taken together, these effects contribute to the development of periodontal disease, one of the most common dental disorders. AIM: The objective of the present study was to evaluate the effectiveness of ozone therapy conducted with the use of the generator producing ozone under effect of ultraviolet radiation for the treatment of periodontitis in musicians-instrumentalists...
2017: Voprosy Kurortologii, Fizioterapii, i Lechebnoĭ Fizicheskoĭ Kultury
https://www.readbyqxmd.com/read/29111244/can-conservation-tillage-reduce-n2o-emissions-on-cropland-transitioning-to-organic-vegetable-production
#12
Guihua Chen, Lauren Kolb, Michel A Cavigelli, Ray R Weil, Cerruti R R Hooks
Nitrous oxide (N2O) is an important greenhouse gas and a catalyst of stratospheric ozone decay. Agricultural soils are the source of 75% of anthropogenic N2O emissions globally. Recently, significant attention has been directed at examining effects of conservation tillage on carbon sequestration in agricultural systems. However, limited knowledge is available regarding how these practices impact N2O emissions, especially for organic vegetable production systems. In this context, a three-year study was conducted in a well-drained sandy loam field transitioning to organic vegetable production in the Mid-Atlantic coastal plain of USA to investigate impacts of conservation tillage [strip till (ST) and no-till (NT)] and conventional tillage (CT) [with black plastic mulch (CT-BP) and bare-ground (CT-BG)] on N2O emissions...
October 27, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29107908/biodegradable-organic-matter-and-rapid-rate-biofilter-performance-a-review
#13
REVIEW
Leigh G Terry, R Scott Summers
Biodegradable organic matter (BOM), found in all surface waters, is a challenge for drinking water utilities because it can lead to distribution system bio-regrowth, react to form disinfection by-products, or be a specific compound of concern. A critical review of BOM (occurrence and oxidant effects) and rapid-rate biofiltration performance (preozonation, backwashing with an oxidant, empty bed contact time (EBCT) and temperature) was carried out. An extensive literature data analysis (n = 100) found total organic carbon (TOC) in nonozonated water is comprised of 20% (median) biodegradable organic carbon (BDOC) and 3% (median) assimilable organic carbon (AOC)...
November 3, 2017: Water Research
https://www.readbyqxmd.com/read/29105712/oxygenated-group-and-structural-defect-enriched-carbon-nanotubes-for-immobilizing-gold-nanoparticles
#14
Jingjie Luo, Hua Wei, Yuefeng Liu, Di Zhang, Bingsen Zhang, Wei Chu, Cuong Pham-Huu, Dang Sheng Su
Surface functionalized and defect enriched carbon nanotubes (oCNTs) by green ozone/H2O treatment can efficiently anchor gold nanoparticles. This Au/oCNT could be stabilized and well dispersed after thermal treatment and showed robust catalytic activity (20.6 mmol gcat(-1) h(-1)) for the oxidative self-coupling of benzylamine to imine in solvent free conditions.
November 6, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/29101690/ecotoxicological-efficiency-of-advanced-ozonation-processes-with-tio2-and-black-light-used-in-the-degradation-of-carbamazepine
#15
Ana Lourdes Oropesa, Fernando Juan Beltrán, António Miguel Floro, Juan José Pérez Sagasti, Patrícia Palma
The aim of the present study was to evaluate the ecotoxicological efficiency of two advanced ozonation processes (AOzPs), the catalytic ozonation (O3/TiO2) and the photocatalytic ozonation (O3/TiO2/black light), in the remotion of carbamazepine. The ecotoxicological efficiency was assessed through the use of lethal and sublethal assays with species Vibrio fischeri and Daphnia magna. Results demonstrated that the AOzPs presented an efficiency of carbamazepine removal higher than 99% (carbamazepine < 2 μg/L) after 12 min of treatment...
November 3, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29078192/n-nitrosodimethylamine-ndma-and-its-precursors-in-water-and-wastewater-a-review-on-formation-and-removal
#16
REVIEW
Massimiliano Sgroi, Federico G A Vagliasindi, Shane A Snyder, Paolo Roccaro
This review summarizes major findings over the last decade related to N-Nitrosodimethylamine (NDMA) in water and wastewater. In particular, the review is focused on the removal of NDMA and of its precursors by conventional and advanced water and wastewater treatment processes. New information regarding formation mechanisms and precursors are discussed as well. NDMA precursors are generally of anthropogenic origin and their main source in water have been recognized to be wastewater discharges. Chloramination is the most common process that results in formation of NDMA during water and wastewater treatment...
October 15, 2017: Chemosphere
https://www.readbyqxmd.com/read/29072844/advances-in-postharvest-technologies-to-extend-the-storage-life-of-minimally-processed-fruits-and-vegetables
#17
Asgar Ali, Wei Keat Yeoh, Charles Forney, Mohammed Wasim Siddiqui
Minimally processed fresh produce is one of the fastest growing segments of the food industry due to consumer demand for fresh, healthy, and convenient foods. However, mechanical operations of cutting and peeling induce the liberation of cellular contents at the site of wounding that can promote the growth of pathogenic and spoilage microorganisms. In addition, rates of tissue senescence can be enhanced resulting in reduced storage life of fresh-cut fruits and vegetables. Chlorine has been widely adopted in the disinfection and washing procedures of fresh-cut produce due to its low cost and efficacy against a broad spectrum of microorganisms...
October 26, 2017: Critical Reviews in Food Science and Nutrition
https://www.readbyqxmd.com/read/29068337/an-efficient-method-to-improve-the-production-of-methane-from-anaerobic-digestion-of-waste-activated-sludge
#18
Xiaolan Li, Xueqin Xu, Shansong Huang, Yun Zhou, Haijiang Jia
Methane production from waste activated sludge (WAS) anaerobic digestion is always low due to slow hydrolysis rate and inappropriate ratio of carbon to nitrogen (C/N). In this work, a novel approach, i.e., co-digestion of WAS and tobacco waste (TW) using ozone pretreatment, to greatly enhance the production of methane is reported. Experimental results showed the optimal C/N and ozone dosage for methane production was 24:1 and 90 mg/g suspended solids, and the corresponding methane production was 203.6 mL/g volatile suspended solids, which was 1...
October 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/29065815/management-of-pain-in-tmd-patients-bio-oxidative-ozone-therapy-versus-occlusal-splints
#19
Tamer Celakil, Almina Muric, Bilge Gökcen Roehlig, Gulumser Evlioglu
OBJECTIVE: To compare the effects of bio-oxidative ozone application with occlusal splints in temporomandibular disorder (TMD) patients with pain. METHODS: Forty participants were selected after the diagnosis of TMD and randomly divided into two groups: ozone group (OG, n = 20) and occlusal splint group (OCSG, n = 20). Ozone was applied to patients three times per week, for a total of six sessions. Patients in the OCSG were instructed to use occlusal splints every night over a period of four weeks...
October 24, 2017: Cranio: the Journal of Craniomandibular Practice
https://www.readbyqxmd.com/read/29064559/the-impact-of-short-term-uv-irradiation-on-grains-of-sensitive-and-tolerant-cereal-genotypes-studied-by-epr
#20
Magdalena Kurdziel, Maria Filek, Maria Łabanowska
BACKGROUND: UV irradiation has ionization character and leads to the generation of reactive oxygen species (ROS). Destructive character of ROS was observed among others during interaction of cereal grains with ozone and was caused by changes in structures of biomolecules leading to the formation of stable organic radicals. That effect was more evident for stress sensitive genotypes. In this study we investigated the influence of UV irradiation on cereal grains originating from genotypes with different tolerance to oxidative stress...
October 24, 2017: Journal of the Science of Food and Agriculture
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