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PVC treatment

Hesamoddin Rabiee, S Mojtaba Seyedi, Hossein Rabiei, Negar Alvandifar
Two non-ionic and hydrophilic surfactant additives, Tetronic-1107 and Triton X-100, were added to poly(vinyl chloride)/NMP polymeric solution to prepare ultrafiltration membranes via immersion precipitation. Surfactants at three different weight percentages up to 6 wt% were added, and the fabricated membranes were characterized and their performance for water treatment in the presence of bovine serum albumin (BSA) as a foulant was assessed. The scanning electron microscopy images indicated remarkable changes in morphology due to higher thermodynamic instability after surfactant addition...
September 2016: Water Science and Technology: a Journal of the International Association on Water Pollution Research
Arturo Luna-Tapia, Hélène Tournu, Tracy L Peters, Glen E Palmer
The azole antifungals arrest fungal growth through inhibition of ergosterol biosynthesis. We recently reported that a vps21Δ/Δ mutant, deficient in membrane trafficking through the late endosome/pre-vacuolar compartment (PVC), continues to grow in the presence of the azoles, despite depletion of cellular ergosterol. Herein, we report that the vps21Δ/Δ mutant exhibits less plasma membrane damage upon azole treatment than wild-type, as measured by the release of a cytoplasmic luciferase reporter into the culture supernatant...
September 19, 2016: Antimicrobial Agents and Chemotherapy
R M Delles, A D True, T Ao, K A Dawson, Y L Xiong
1. The influence of dietary antioxidants and quality of oil on the oxidative and physicochemical properties of chicken broiler breast and thigh meat stored was studied in either an oxygen-enriched (HiOx: 80% O2/20% CO2) or an air-permeable polyvinylchloride (PVC) packaging system during retail display at 2-4 °C for up to 14 and 7 d, respectively. 2. Broilers were fed on a diet with either a low-oxidised (peroxide value 23 meq O2/kg) or high-oxidised (peroxide value 121 meq O2/kg) oil, supplemented with or without an algae/selenium-based antioxidant with organic minerals, for 42 d...
September 16, 2016: British Poultry Science
Bong Su Kim, Chung Gyoo Park, Young Mi Moon, Bo Kyung Sung, Yonglin Ren, Stephen J Wylie, Byung Ho Lee
Quarantine treatments by phosphine (PH3) gas have been performed to replace methyl bromide (MeBr) for export cut flowers and imported nursery plant in Korea. In this preliminary study, two dominant insect pests of cut flowers, Tetranychus urticae Koch and Frankliniella occidentalis Pergande, and the dominant insect pest of nursery plants, Planococcus citri Risso, were used to certify optimum concentration and fumigation time, along with evaluation of phytotoxic damages. To validate the results of preliminary tests, quarantine treatments for export cut flowers was performed in a 58-m(3) reefer container...
September 15, 2016: Journal of Economic Entomology
Nguyen Thi Thanh Truc, Chi-Hyeon Lee, Byeong-Kyu Lee, Srinivasa Reddy Mallampati
Polyvinyl chloride (PVC) containing chlorine can release highly toxic materials and persistent organic pollutants if improperly disposed of. The combined technique of powder activated carbon (PAC) coating and mild heat treatment has been found to selectively change the surface hydrophobicity of PVC, enhancing its wettability and thereby promoting its separation from heavy plastic mixtures included polycarbonate (PC), polymethyl methacrylate (PMMA), polystyrene (PS) and acrylonitrile butadiene styrene (ABS) by means of froth flotation...
September 7, 2016: Journal of Hazardous Materials
Tan Dang, Luke M Mosley, Rob Fitzpatrick, Petra Marschner
When previously oxidised acid sulphate soils are leached, they can release large amounts of protons and metals, which threaten the surrounding environment. To minimise the impact of the acidic leachate, protons and metals have to be retained before the drainage water reaches surrounding waterways. One possible amelioration strategy is to pass drainage water through permeable reactive barriers. The suitability of organic materials for such barriers was tested. Eight organic materials including two plant residues, compost and five biochars differing in feedstock and production temperature were finely ground and filled into PVC cores at 3...
September 10, 2016: Environmental Science and Pollution Research International
Lingmin Wu, Yanlai Lu, Yan Yao, Lihui Zheng, Gang Chen, Ligang Ding, Bingbo Hou, Yu Qiao, Wei Sun, Shu Zhang
As a new complication, new-onset ventricular arrhythmias (VAs) post atrial fibrillation (AF) ablation have not been well defined. This prospective study aimed to describe the details of new-onset VAs post AF ablation in a large study cohort.One thousand fifty-three consecutive patients who underwent the first radiofrequency catheter ablation for AF were enrolled. All patients had no evidence of pre-ablation VAs. New-onset VAs were defined as new-onset ventricular tachycardia (VT) or premature ventricular contractions (PVC) ≥1000/24 h within 1 month post ablation...
September 2016: Medicine (Baltimore)
Nguyen Thi Thanh Truc, Byeong-Kyu Lee
This study reports simple, selective, and sustainable separation of chlorinated plastic (polyvinyl chloride, PVC) and acrylonitrile butadiene styrene (ABS) containing brominated flame retardants (BFRs) from mixed waste electrical and electronic equipment (WEEE) plastics using microwave and/or mild-heat treatment. Microwave treatment after plastic coating with powdered activated carbon (PAC) selectively increased the hydrophilicity of the PVC surface, which facilitated PVC separation (100% recovery and purity) from the WEEE plastic mixture under the optimum flotation conditions...
October 4, 2016: Environmental Science & Technology
Pramir Maharjan, Geraldine Huff, Wen Zhang, Susan Watkins
An in vitro experiment was conducted to understand the nature of biofilm growth on polyvinyl chloride (PVC) surface when exposed to suboptimal-quality microbial water (>4 log10 cfu/mL) obtained from a poultry drinking water source mimicking water in waterlines during the first week of poultry brooding condition. PVC sections (internal surface area of 15.16 cm(2)) were utilized in the study to grow biofilm. After a 7-d test period, test coupons with 7-day-old biofilm were transferred into autoclaved municipal water and then treated with either chlorine-based or hydrogen peroxide-based sanitizer at bird drinking water rate, to see the impact on removal of biofilm formed on test coupons...
September 5, 2016: Poultry Science
Maximiliano Alejo Maricic, María Marcela Bailez, Susana P Rodriguez
UNLABELLED: We present the results of the validation of an inanimate model created for training thoracoscopic treatment of esophageal atresia with lower tracheoesophageal fistula (EA/TEF). MATERIALS AND METHODS: We used different domestic materials such as a piece of wood (support), corrugated plastic tubes (PVC) of different sizes to simulate ribs, intercostal spaces, trachea and spine and tubular latex balloons to simulate the esophagus and lungs to make the basic model...
September 2016: Journal of Pediatric Surgery
Hong-TaoYuan, Mei Yang, Li Zhong, Ying-Hsiang Lee, Vaibhav R Vaidya, Samuel J Asirvatham, Michael J Ackerman, Sorin V Pislaru, Rakesh M Suri, Joshua P Slusser, David O Hodge, Yu-Tang Wang, Yong-Mei Cha
BACKGROUND: In patients with frequent premature ventricular contractions (PVCs), little is known about the profile of PVCs and the outcome of treatment in patients with mitral valve prolapse (MVP) compared to those without MVP. METHODS AND RESULTS: Patients with documented PVCs between January 2001 and October 2012 were divided into 2 groups: MVP and non-MVP. The PVC characteristics, efficacy of therapy, and outcome were compared between the 2 groups. A total of 112 patients with MVP and 952 without MVP were identified...
October 15, 2016: International Journal of Cardiology
Yuanyuan Zhao, Jiaqi Lu, Xuyang Liu, Yudan Wang, Jiuyang Lin, Na Peng, Jingchun Li, Fangbo Zhao
A novel polyvinyl chloride (PVC) membrane was modified with graphene oxide (GO) via phase inversion method to improve its hydrophilicity and mechanical properties. The GO presented a large amount of hydrophilic groups after the modification through the modified Hummers method. It was observed that with the addition of low fraction of GO powder, the GO/PVC hybrid membranes exhibited a significant enhancement in hydrophilicity, water flux, and mechanical properties. With optimal dosage (0.1wt%), the pure water flux of GO/PVC membrane increased from 232...
October 15, 2016: Journal of Colloid and Interface Science
Ahmed Karim Talib, Yoshiaki Yui, Takashi Kaneshiro, Yukio Sekiguchi, Akihiko Nogami, Kazutaka Aonuma
Placement of an implantable cardioverter-defibrillator (ICD) is the only powerful treatment modality for Brugada syndrome in patients presenting with ventricular fibrillation (VF). For those whose first presentation is an electrical storm, pharmacologic therapy is typically used to control VF followed by ICD implantation. We report an alternative approach whereby, before ICD implantation, emergency catheter ablation of the VF-triggering premature ventricular contraction (PVC) resulted in long-term VF-free survival...
June 2016: Journal of Arrhythmia
S Luzardo, D R Woerner, I Geornaras, A M Hess, K E Belk
Two studies were conducted to evaluate the influence of packaging during storage of strip loins (to simulate export shipment) from steers fattened on intensive grazing systems (Uruguay; UR) or on a high-concentrate diet (United States; US) on retail display life microbial growth. Four or 3 different packaging treatments were applied to UR and US strip loin roasts or steaks during 35 d of storage; treatments were applied 7 d following slaughter. After 35 d of storage, the samples were evaluated during simulated retail display for up to 6 d...
June 2016: Journal of Animal Science
Xiao-Ling Cheng, Jian-Guo He, Zhi-Hong Liu, Qing Gu, Xin-Hai Ni, Zhi-Hui Zhao, Qin Luo, Chang-Ming Xiong
PURPOSE: This study aimed to identify the relationship between pulmonary vascular capacitance (PVC) and vasoreactivity in patients with idiopathic pulmonary arterial hypertension (IPAH), and the value of PVC in predicting long-term response to CCB treatment. METHODS: Pulmonary vasodilator testing with inhaling iloprost was performed in 308 newly diagnosed IPAH patients. Acute vasodilator-responsive patients accepted CCBs treatment. Patients who benefit from long-term CCB were defined as those being in World Health Organization (WHO) functional class II or I after at least 1 year on CCB monotherapy...
August 2016: Lung
F Edward Boas, Lynn A Brody, Joseph P Erinjeri, Hooman Yarmohammadi, Waleed Shady, Sirish Kishore, Constantinos T Sofocleous
OBJECTIVE: Colorectal liver metastases (CLM) have a variable response to radioembolization. This may be due at least partly to differences in tumor arterial perfusion. The present study examines whether quantitative measurements of enhancement on preprocedure triphasic CT can be used to predict the response of CLM to radioembolization. MATERIALS AND METHODS: We retrospectively reviewed patients with CLM treated with radioembolization who underwent pretreatment PET/CT and triphasic CT examinations and posttreatment PET/CT examinations...
September 2016: AJR. American Journal of Roentgenology
Mari Titcombe Lee, Amy Pruden, Linsey C Marr
To gain insight into the potential for aerosolization of viruses in wastewater systems, we investigated the partitioning of MS2 and Phi6 bacteriophages in synthetic sludge and anaerobically digested sludge from a wastewater treatment plant. We evaluated partitioning among the liquid, solids, and material surfaces of porcelain, concrete, polyvinyl chloride (PVC), and polypropylene. In all cases, at least 94% of the virions partitioned into the liquid fraction. In real sludge, no more than 0.8% of virions partitioned to the solids and no more than 6% to the material surface...
May 10, 2016: Environmental Science & Technology Letters
Kang Liu, Fu-Shen Zhang
In this work, an effective and environmentally friendly process for the recovery of cobalt (Co) and lithium (Li) from spent lithium-ion batteries (LIBs) and simultaneously detoxification of polyvinyl chloride (PVC) in subcritical water was developed. Lithium cobalt oxide (LiCoO2) power from spent LIBs and PVC were co-treated by subcritical water oxidation, in which PVC served as a hydrochloric acid source to promote metal leaching. The dechlorination of PVC and metal leaching was achieved simultaneously under subcritical water oxidation...
October 5, 2016: Journal of Hazardous Materials
Fu-Rong Xiu, Huiwei Weng, Yingying Qi, Gending Yu, Zhigang Zhang, Fu-Shen Zhang
In this study, a novel reutilization method for waste printed circuit boards (PCBs) as flame retardant and smoke suppressant for poly (vinyl chloride) (PVC) was successfully testified. A supercritical water oxidation (SCWO) process was applied to treat waste PCBs before they could be used as flame retardants of PVC. The results indicated that SCWO conditions had a significant effect on the flame retarding and smoke suppressing properties of waste PCBs for PVC. Cu2O, CuO, and SnO2 were the main active ingredients in waste PCBs-derived flame retardants...
September 5, 2016: Journal of Hazardous Materials
Zhen Li, Xiaoyu Li, Jiancheng Zhang, Xitao Wang, Lili Wang, Zhenhui Cao, Yongping Xu
In the present study, we isolated 3 bacteriophages with the ability to control Vibrio splendidus, a bacterium known to cause disease in the juvenile sea cucumber. These bacteriophages were designated as vB_VspS_VS-ABTNL-1 (PVS-1), vB_VspS_VS-ABTNL-2 (PVS-2) and vB_VspS_VS-ABTNL-3 (PVS-3). The ability of the 3 phages to inhibit the growth of V. splendidus VS-ABTNL was tested in vitro using each of the 3 phages individually or in the form of a cocktail of all 3 phages in the proportion of 1:1:1. All treated cultures produced a significant (P < 0...
July 2016: Fish & Shellfish Immunology
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