A5034640067- biodegradable polymer synthesis and properties
- Polymer crystallization and properties
- Advanced ceramic materials synthesis
- Advanced materials and composites
- Polymer Foaming and Composites
- Conducting polymers and applications
- Microplastics and Plastic Pollution
- Carbon dioxide utilization in catalysis
- Epoxy Resin Curing Processes
- Natural Fiber Reinforced Composites
- Pregnancy and preeclampsia studies
- Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities
- Aluminum Alloys Composites Properties
- Advanced Sensor and Energy Harvesting Materials
- Thermal and Kinetic Analysis
- Microbial bioremediation and biosurfactants
- Metal Alloys Wear and Properties
- Heart Rate Variability and Autonomic Control
- Food Quality and Safety Studies
- Organic Electronics and Photovoltaics
- Injection Molding Process and Properties
- Dyeing and Modifying Textile Fibers
- Environmental Chemistry and Analysis
- Global Maternal and Child Health
- Maternal and fetal healthcare
University of Birmingham
2012-2024
University of Worcester
2024
University of Toronto
2017-2022
Institute of Metallurgy
2020
Women's College Hospital
2004-2019
Michigan State University
2016
University of Nottingham
2007-2012
Bradford Teaching Hospitals NHS Foundation Trust
2010
Faculdade Brasil
1999-2005
Art Research Centre of the Slovak Academy of Sciences
1985
Sulfur is an underused by-product of the petrochemicals industry. Recent research into inverse vulcanization has shown how this excess sulfur can be transformed functional polymers, by stabilization with organic crosslinkers. For these interesting new materials to realize their potential for applications, more understanding and control physical properties needed. Here we report four terpolymers prepared from two distinct alkene monomers that predictively tuned in glass transition, molecular...
Reliable chemical identification of specific polymers in environmental samples represents a major challenge plastic research, especially with the wide range commercial available, along variable additive mixtures. Thermogravimetric analysis-Fourier transform infrared-gas chromatography-mass spectrometry (TGA-FTIR-GC-MS) offers unique characterization platform that provides both physical and properties analyzed polymers. This study presents library 11 generated using virgin plastics...
Diabet. Med. 27, 650–654 (2010) Abstract Aims To review postpartum glucose tolerance in women with gestational diabetes and evaluate the role of formal 75 g oral testing vs. fasting plasma screening for persistent abnormalities. Methods Retrospective study 985 pregnancies over a 10 year period mixed ethnic cohort who underwent follow‐up at 6 weeks postpartum. Diagnosis obtained by test was tested against that from value. Results There were 272 abnormal results (27.6%), 109 identified as...
Abstract The isothermal crystallization of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) was evaluated using a range models, namely, Avrami, simplified Hillier, Tobin, Malkin, Urbanovici–Segal, Velisaris–Seferis, and Hay. Two methods model evaluation were used: determination the parameters through traditional double log plots curve fitting via nonlinear, multivariable regression. Visual inspection cumulative curves, calculation R 2 value standard error regression, returned used to assess...
Combined analysis of three experiments showed that when lamb carcases with initial bacterial numbers between logi 10 3.29 and 4.22/cm 2 were spray washed, statistically significant reductions in log O.5 obtained the wash water temperature was > 57°C, 1.0 ≥ 80°C. Reductions at all temperatures enhanced by 0.66 contained 30 µg/ml chlorine, but increasing concentration to 450 reduced only a further 0–29. At highly contaminated sites duration spraying from 120 s significantly increased...
Polymer powder bed fusion (PBF) is becoming increasingly popular for the fabrication of lightweight, high-performance parts, particularly medical and aerospace applications. This study investigates effect re-use material aging on coalescence behaviour, melt flowability, isothermal crystallisation kinetics polyamide-12 (PA-12) powder. With increased re-use, a progressive reduction in flowability observed; at 200 °C, particle consolidation time increases from 15 s virgin to 180 recovered build...
Abstract The unique combination of the gas like viscosity and liquid density supercritical CO 2 (scCO ) is exploited to blend poly(D,L‐lactic acid) (P DL LA) poly(ethylene glycol) (PEG) at near ambient temperatures. This novel process lowers polymer also permits incorporation thermally solvent labile protein based drugs. A series blends are prepared with agitation in scCO . Differential scanning calorimetry (DSC) data shows that miscible can be produced moderate surprising region miscibility...
Abstract The effect of supercritical CO 2 on the viscosity and activation energy to viscous flow P DL LA is investigated, using a high pressure parallel plate rheometer, over range temperatures (50–140 °C) pressures (5–12 MPa). Cross model fitted data enable calculation zero shear critical rate. A significant decrease in observed increasing both variables; however, at temperatures, becomes negligible. An increase rate also raising pressure, indicative reduction relaxation time polymer....
Abstract The optimum processing conditions for PEDOT:PSS and PEDOT:PSS/Tween 80 cast films were investigated by considering film quality resistivity. thermal stabilities of these materials found to strongly influence the accessible annealing temperatures, especially in presence conductivity-enhancing agent Tween 80. resistivities with without decreased up 85% increases both temperature time until a plateau was reached. In addition, structural rearrangements polymers key driving factors that...
Inactivating mutations of CDC73 cause Hyperparathyroidism-Jaw Tumour syndrome (HPT-JT), Familial Isolated Hyperparathyroidism (FIHP) and sporadic parathyroid carcinoma. We conducted mutation analysis in an HPT-JT family confirm carrier status the proband's daughter.The proband had primary hyperparathyroidism (parathyroid carcinoma) uterine leiomyomata. Her father daughter adenoma) but no other manifestations HPT-JT. (sequencing all 17 exons) whole-genome copy number variation (CNV) was done...
Replacement of indium tin oxide with the intrinsically conducting polymer poly(3,4–ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) has been significant interest in recent years as a result lower processing and material costs. In addition, inclusion additives reported to further enhance conductivity, rheology, wettability PEDOT:PSS. this study, Tween 80 was shown decrease sheet resistance PEDOT:PSS films from approximately 1000 76 Ω□−1 at 2.67 wt% surfactant concentration. Through...
HEALTH ISSUE: Diabetes mellitus (DM) is a chronic health condition affecting 4.8% of Canadian adults >/= 20 years age. The prevalence increases with According to the National Surveillance System (NDSS) (1998-1999), approximately 12% Canadians aged 60-74 are affected. One-third cases may remain undiagnosed. projected increase in DM largely results from rising rates obesity and inactivity. KEY FINDINGS: Canada appears be more common among men than women. However, Aboriginal Canadians,...
Abstract Utilization of the conducting polymer PEDOT:PSS in flexible optoelectronic devices is hindered by poor adhesion to flexible, polymer-based substrates. In this communication, ability poly(dopamine) (PDA) act as a primer and improve probed. The presence hydrophilic PDA on surface substrate increased wettability polypropylene (PP); however, it was reduced for poly(ethylene terephthalate) (PET). Despite this, established an effective quality pristine PEDOT:PSS/Tween 80 films glass, PP...
Abstract The lower material and manufacturing costs of conductive polymers, particularly PEDOT:PSS, compared to indium tin oxide have led significant research into their use in optoelectric devices. In this study, improvements the electrical properties PEDOT:PSS PEDOT:PSS/Tween 80 via production multilayered films were investigated. A single layer pristine was found give a sheet resistance 1639 Ω□ –1 . application an additional three layers reduced value 29 -1 , corresponding increase...
Abstract Total bacterial numbers at the most highly contaminated sites on lamb carcases (in crutch region and adjacent to abdominal incision) were significantly reduced log 10 3.3/cm 2 when spray washed with unchlorinated water 80°C 2.8 containing 450 μg/ml chlorine was used, whereas which cloth cleaned or 10°C remained approximately 4.0. During refrigerated storage, however, treated by all methods developed similar of bacteria had same storage life, evidently because washing did not affect...
Abstract Because remediation timeframes using monitored natural attenuation may span decades or even centuries at chlorinated solvent sites, new approaches are needed to assess the long‐term sustainability of reductive dechlorination in ground water systems. In this study, extraction procedures were used investigate mass indigenous organic carbon aquifer sediment, and experiments conducted determine if extracted could support chloroethenes. Aquifer sediment cores collected from a site...