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https://www.readbyqxmd.com/read/29137761/ultrasound-assisted-surface-treatment-of-zro2-with-bsa-and-incorporating-in-pvc-to-improve-the-properties-of-the-obtained-nanocomposites-fabrication-and-characterization
#1
Shadpour Mallakpour, Zahra Hajjari
This paper describes the preparation of poly(vinyl chloride) (PVC) nanocomposites (NCs) reinforced with modified zirconia (ZrO2) nanoparticles (NPs). The ZrO2 NPs were defined as efficient filler for PVC NCs. For achieving the best dispersion and improvement of properties, the surface of ZrO2 NPs was modified by Bovine Serum Albumin (BSA). Carboxylic acids and amines are important functional groups of BSA which handle the grafting BSA on the surface of ZrO2 NPs. The PVC/ZrO2-BSA NCs were fabricated by incorporation of various amounts of the ZrO2-BSA NPs (3, 6 and 9wt%) into PVC matrix...
March 2018: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/29110979/complications-from-administration-of-vasopressors-through-peripheral-venous-catheters-an-observational-study
#2
Kamal Medlej, Amin Antoine Kazzi, Ahel El Hajj Chehade, Mothana Saad Eldine, Ali Chami, Rana Bachir, Dina Zebian, Gilbert Abou Dagher
BACKGROUND: The placement of a central venous catheter for the administration of vasopressors is still recommended and required by many institutions because of concern about complications associated with peripheral administration of vasopressors. OBJECTIVE: Our aim was to determine the incidence of complications from the administration of vasopressors through peripheral venous catheters (PVC) in patients with circulatory shock, and to identify the factors associated with these complications...
October 27, 2017: Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29108004/direct-and-indirect-effects-of-different-types-of-microplastics-on-freshwater-prey-corbicula-fluminea-and-their-predator-acipenser-transmontanus
#3
Chelsea M Rochman, J Mark Parnis, Mark A Browne, Sebastian Serrato, Eric J Reiner, Matthew Robson, Thomas Young, Miriam L Diamond, Swee J Teh
We examined whether environmentally relevant concentrations of different types of microplastics, with or without PCBs, directly affect freshwater prey and indirectly affect their predators. Asian clams (Corbicula fluminea) were exposed to environmentally relevant concentrations of polyethylene terephthalate (PET), polyethylene, polyvinylchloride (PVC) or polystyrene with and without polychlorinated biphenyls (PCBs) for 28 days. Their predators, white sturgeon (Acipenser transmontanus), were exposed to clams from each treatment for 28 days...
2017: PloS One
https://www.readbyqxmd.com/read/29068742/experiences-of-peripheral-iv-insertion-in-hospital-a-qualitative-study
#4
Emily Larsen, Samantha Keogh, Nicole Marsh, Claire Rickard
Adult medical and surgical patients admitted to tertiary hospitals regularly have peripheral venous catheters (PVCs) inserted for their treatment. Anecdotally, patients report varying levels of pain and anxiety during the insertion procedure; however, lived experiences of patients are not well documented in the literature. The aim of this study was to gain an understanding of patients' experiences of PVC insertion. Some 10 participants were purposively sampled for semi-structured interviews, from the medical and surgical wards at a tertiary hospital in Queensland, Australia...
October 26, 2017: British Journal of Nursing: BJN
https://www.readbyqxmd.com/read/29064791/effect-of-quercetin-on-parameters-of-central-hemodynamics-and-myocardial-ischemia-in-patients-with-stable-coronary-heart-disease
#5
Natalia I Chekalina, Svitlana V Shut, Tetiana A Trybrat, Yurii H Burmak, Yeuhen Ye Petrov, Yulia I Manusha, Yurii M Kazakov
THE AIM: The aim of our research was to study the effect of quercetin on parameters of central hemodynamics and myocardial ischemia in patients with stable coronary heart disease (CHD). MATERIAL AND METHODS: The research involved 85 patients with CHD: stable angina pectoris, FC II, and 30 healthy individuals made up the control group. After 1.5 months of stabilizing therapy (ß-blockers, statins, aspirin) patients with CHD were randomized into 2 groups - the research group (30 people) and the comparison group (55 people)...
2017: Wiadomości Lekarskie: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/29048452/development-of-the-laboratory-prototype-cavypool-for-assessing-treatments-and-materials-for-swimming-pools
#6
F Valeriani, G Gianfranceschi, M Vitali, C Protano, V Romano Spica
BACKGROUND: Hygiene and surveillance in swimming pools are established by WHO Guidelines and national laws. Progress in water management and pool construction is revolutionizing the field, introducing new materials, systems, disinfection procedures or monitoring markers. Innovation advances challenge the upgrading of safety and quality in pools and the appropriate implementation of guidelines. STUDY DESIGN: In order to provide a device for laboratory test, a prototype was realized and applied to study and compare swimming pool materials and treatments...
November 2017: Annali di Igiene: Medicina Preventiva e di Comunità
https://www.readbyqxmd.com/read/28992093/voriconazole-treatment-in-adults-and-children-with-hematological-diseases-can-it-be-used-without-measurement-of-plasma-concentration
#7
Corrado Girmenia, Luciana Annino, Alice Bertaina, Benedetta Mariotti, Désirée Caselli, Rosa Fanci, Walter Barberi, Francesco Marchesi, Alessandra Carotti, Antonella Ferrari, Elisabetta Cerchiara, Luca Cupelli, Francesco Arcioni, Michela Ribersani, Anna Proia, Claudio Cartoni, Katia Girardi, Adriano Venditti, Maria Iris Cassetta, Stefania Fallani, Andrea Novelli
Indication and timing of trough plasma-voriconazole (VCZ)-concentration (t-PVC) measurement during VCZ treatment is a debated issue. Patterns of t-PVC were prospectively evaluated in pediatric (50 courses) and adult (95 courses) hematologic patients. Efficacy patterns were defined: adequate, t-PVC always ≥1 mcg/ml; borderline, at least one t-PVC measurement <1 mcg/ml but median value of the measurements ≥1 mcg/ml; inadequate, median value of the measurements <1 mcg/ml. Toxicity patterns were defined: favorable, t-PVC always ≤5 mcg/ml; borderline, one or more t-PVC measurements >5 mcg/ml but median value of the measurements ≤5 mcg/ml; unfavorable, median value of the measurements >5 mcg/ml...
August 2, 2017: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
https://www.readbyqxmd.com/read/28990947/ablation-of-epicardial-premature-ventricular-contractions-in-a-patient-with-ischemic-cardiomyopathy-and-implementation-of-cardiac-resynchronization-therapy-in-the-same-procedure
#8
Veysel Kutay Vurgun, Başar Candemir, Ali Timuçin Altın, Ömer Akyürek
Premature ventricular contractions (PVCs) can cause clinical deterioration in patients with heart failure and increase the frequency of shocks delivered by an implantable cardioverter defibrillator (ICD). Epicardial PVC/ventricular tachycardia (VT) is seen less often in ischemic cardiomyopathy. Radiofrequency catheter ablation is the most effective treatment option for the management of PVC/VT and can improve cardiac function. Presently described is a patient with ischemic cardiomyopathy and frequent PVCs and VT runs with multiple ICD therapies who was treated with simultaneous radiofrequency catheter ablation in the anterior interventricular vein and cardiac resynchronization therapy defibrillator upgrade in the same procedure...
October 2017: Türk Kardiyoloji Derneği Arşivi: Türk Kardiyoloji Derneğinin Yayın Organıdır
https://www.readbyqxmd.com/read/28977663/quantitative-measurement-of-18f-fdg-pet-ct-uptake-reflects-the-expansion-of-circulating-plasmablasts-in-igg4-related-disease
#9
Alvise Berti, Emanuel Della-Torre, Francesca Gallivanone, Carla Canevari, Raffaella Milani, Marco Lanzillotta, Corrado Campochiaro, Giuseppe Alvise Ramirez, Emanuele Bozzalla Cassione, Enrica Bozzolo, Federica Pedica, Isabella Castiglioni, Paolo Giorgio Arcidiacono, Gianpaolo Balzano, Massimo Falconi, Luigi Gianolli, Lorenzo Dagna
Objective: [ 18 F]Fluorodeoxyglucose ( 18 F-FDG) PET/CT is increasingly used to assess organ involvement and response to treatment in IgG4-related disease (IgG4-RD), but clear correlations between 18 F-FDG uptake and disease activity have not been established yet. We aimed to correlate the intensity and distribution of 18 F-FDG uptake with validated clinical, serological and immunological parameters of IgG4-RD activity. Methods: Twenty patients with active IgG4-RD underwent a baseline 18 F-FDG PET/CT...
July 7, 2017: Rheumatology
https://www.readbyqxmd.com/read/28971667/self-driven-photoelectrochemical-splitting-of-h2s-for-s-and-h2-recovery-and-simultaneous-electricity-generation
#10
Tao Luo, Jing Bai, Jinhua Li, Qingyi Zeng, Youzhi Ji, Li Qiao, Xiaoyan Li, Baoxue Zhou
A novel, facile self-driven photoelectrocatalytic (PEC) system was established for highly selective and efficient recovery of H2S and simultaneous electricity production. The key ideas were the self-bias function between a WO3 photoanode and a Si/PVC photocathode due to their mismatched Fermi levels and the special cyclic redox reaction mechanism of I(-)/I3(-). Under solar light, the system facilitated the separation of holes in the photoanode and electrons in the photocathode, which then generated electricity...
November 7, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28961492/strong-release-of-viruses-in-fracture-flow-in-response-to-a-perturbation-in-ionic-strength-filtration-retention-tests-and-modeling
#11
Costantino Masciopinto, Fabrizio Visino
Effluents derived from a municipal wastewater treatment plant were used for virus filtration/retention experiments by using a horizontal laboratory filter. Filtration tests were performed to examine how soil geochemical heterogeneity and fracture patterns affected the transport of viruses in groundwater in order to model the influence of reductive perturbations in ionic strength (IS) during wastewater filtration. Although perturbations of IS and velocity are known to result in resuspension of colloids, we found that the effect of soil geochemical heterogeneity can produce strong and instantaneous virus releases in fractured aquifers, likely an internal additional source of viruses...
December 1, 2017: Water Research
https://www.readbyqxmd.com/read/28952932/localization-of-origins-of-premature-ventricular-contraction-by-means-of-convolutional-neural-network-from-12-lead-ecg
#12
Ting Yang, Long Yu, Qi Jin, Liqun Wu, Bin He
OBJECTIVE: This paper proposes a novel method to localize origins of premature ventricular contractions (PVCs) from 12-lead electrocardiography (ECG) using convolutional neural network (CNN) and a realistic computer heart model. METHODS: The proposed method consists of two CNNs (Segment CNN and Epi-Endo CNN) to classify among ventricular sources from 25 segments and from epicardium (Epi) or endocardium (Endo). The inputs are the full time courses and the first half of QRS complexes of 12-lead ECG, respectively...
September 25, 2017: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/28948594/-decreasing-the-output-of-biomedical-waste-in-the-intensive-care-unit
#13
Ming-Yi Shen, Chun-Chu Chang, Mung-Yeng Li, Jui-Hsiang Lin
BACKGROUND & PROBLEMS: Advancing healthcare technologies have increased the use of disposable supplies that are made with PVC (polyvinyl chloride). Furthermore, biomedical effluents are steadily increasing due to severe patient treatment requirements in intensive care units. If these biomedical wastes are not properly managed and disposed, they will cause great harm to the environment and to public health. The statistics from an intensive care unit at one medical center in northern Taiwan show that the per-person biomedical effluents produced in 2014 increased 8...
October 2017: Hu Li za Zhi the Journal of Nursing
https://www.readbyqxmd.com/read/28913651/outcomes-of-percutaneous-portal-vein-intervention-in-a-single-uk-paediatric-liver-transplantation-programme
#14
Ravi Patel, Jeevan Mahaveer, Nasim Tahir, Sanjay Rajwal, Patricia McClean, Jai V Patel
INTRODUCTION: Percutaneous transluminal angioplasty (PTA), with or without stent placement, has become the treatment of choice for portal vein complications (PVC) following liver transplantation. We aimed to assess long-term outcomes of intervention in paediatric transplant recipients, in a single institution. MATERIALS AND METHODS: 227 children received 255 transplants between November 2000 and September 2016. 30 patients developed PVC of whom 21 had percutaneous intervention...
September 14, 2017: Cardiovascular and Interventional Radiology
https://www.readbyqxmd.com/read/28893586/effects-of-diisononyl-phthalate-on-osteopenia-in-intact-mice
#15
Yun-Ho Hwang, Young-Jin Son, Man-Jeong Paik, Sung-Tae Yee
Osteopenia is characterized by bone loss and deterioration of trabecular bone, which leads to osteoporotic fractures. This disease is highly prevalent in industrialized areas and is associated with exposure to endocrine disrupting chemicals (EDCs). Diisononyl phthalate (DINP) is one of these EDCs and is mainly used as a plasticizer in flexible polyvinyl chloride (PVC) products. Although it is well known that exposure to DINP is harmful to humans, no studies have been reported concerning its contribution to osteopenia...
November 1, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/28892841/movement-of-traditional-fecal-indicator-bacteria-and-source-tracking-targets-through-septic-drainfields
#16
Hannah Billian, Leigh-Anne Krometis, Theresa Thompson, Charles Hagedorn
The past three decades' data on outbreaks in the United States indicate that homes dependent on untreated groundwater (e.g. wells) for household drinking water that are also reliant on onsite treatment of household wastewater (e.g. septic systems) may be at greater risk for waterborne disease. While groundwater quality monitoring to protect public health has traditionally focused on the detection of fecal indicator bacteria, the application of emerging source tracking strategies may offer a more efficient means to identify pollution sources and effective means of remediation...
January 1, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/28865909/research-and-demonstration-results-for-a-new-double-solution-technology-for-municipal-solid-waste-treatment
#17
Li Erping, Chen Haoyun, Shang Yanyang, Pan Jun, Hu Qing
In this paper, the pyrolysis characteristics of six typical components in municipal solid waste (MSW) were investigated through a TG-FTIR combined technique and it was concluded that the main pyrolysis process of the biomass components (including food residues, sawdust and paper) occurred at 150-600°C. The main volatiles were multi-component gas including H2O, CO2, and CO. The main pyrolysis temperatures of three artificial products (PP, PVC and leather) was ranged from 200to 500°C. The wavelength of small molecule gases (CH4, CO2 and CO) and the the chemical bonds (CO and CC) were observed in the infrared spectrum Based on the pyrolysis temperature interval and volatile constituent, a new "double-solution" process of pyrolysis and oxygen-enrichment decomposition MSW was designed...
November 2017: Waste Management
https://www.readbyqxmd.com/read/28828161/effect-of-saliva-contamination-on-cementation-of-orthodontic-brackets-using-different-adhesive-systems
#18
Aliden-Willian Robaski, Saulo Pamato, Marcelo Tomás-de Oliveira, Jefferson-Ricardo Pereira
BACKGROUND: The enamel condition and the quality of surface are points that need to be considered for achieving optimal efficiency in the treatment with orthodontic brackets. The aim of this study was to assess the immediate bond strength of metallic brackets cemented to dental. MATERIAL AND METHODS: Forty human premolars were double-sectioned, placed in PVC matrices and randomly divided into 10 groups (n=8). They received artificial saliva contamination before or after the application of adhesive systems, except for the control groups...
July 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28801216/a-novel-process-for-separation-of-hazardous-poly-vinyl-chloride-from-mixed-plastic-wastes-by-froth-flotation
#19
Jianchao Wang, Hui Wang, Chongqing Wang, Lingling Zhang, Tao Wang, Long Zheng
A novel method, calcium hypochlorite (CHC) treatment, was proposed for separation of hazardous poly(vinyl chloride) (PVC) plastic from mixed plastic wastes (MPWs) by froth flotation. Flotation behavior of single plastic indicates that PVC can be separated from poly(ethylene terephthalate) (PET), poly(acrylonitrile-co-butadiene-co-styrene) (ABS), polystyrene (PS), polycarbonate (PC) and poly(methyl methacrylate) (PMMA) by froth flotation combined with CHC treatment. Mechanism of CHC treatment was examined by contact angle measurement, scanning electron microscopy, Fourier transform infrared and X-ray photoelectron spectroscopy...
August 8, 2017: Waste Management
https://www.readbyqxmd.com/read/28796279/withdrawn-intermittent-catheterisation-for-long-term-bladder-management
#20
REVIEW
Jacqui Prieto, Catherine L Murphy, Katherine N Moore, Mandy Fader
BACKGROUND: Intermittent catheterisation is a commonly recommended procedure for people with incomplete bladder emptying. There are now several designs of intermittent catheter (e.g. different lengths, 'ready to use' presentation) with different materials (e.g. PVC-free) and coatings (e.g. hydrophilic). The most frequent complication of intermittent catheterisation is urinary tract infection (UTI), but satisfaction, preference and ease of use are also important to users. It is unclear which catheter designs, techniques or strategies affect the incidence of UTI, which are preferable to users and which are most cost effective...
August 8, 2017: Cochrane Database of Systematic Reviews
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