403 research outputs found
Phenol interaction with different nano-cages with and without an electric field: A DFT study
The adsorption properties of the phenol molecule (C6H5OH) upon the outer surfaces of C24, B12P12, B12N12, Al12N12, and Al12P12 were investigated using density functional theory calculations. Our calculations reveal that the phenol molecule can be chemisorbed on the sidewalls of Al12N12 and Al12P12 with adsorption energies of -1.03 and -0.76 eV, respectively. While the adsorption energy of C6H5OH on Al12N12 is typically more than that of Al12P12 cluster. We also considered the adsorption of the C6H5OH molecule under a strong electric field over Al12N12. The results indicate that Al12N12 has high sensitivity to the phenol molecule in the presence of an electric field. © Springer Science+Business Media 2014
Microbiome profile associated with malignant pleural effusion.
INTRODUCTION:There is ongoing research into the development of novel molecular markers that may complement fluid cytology malignant pleural effusion (MPE) diagnosis. In this exploratory pilot study, we hypothesized that there are distinct differences in the pleural fluid microbiome profile of malignant and non-malignant pleural diseases. METHOD:From a prospectively enrolled pleural fluid biorepository, samples of MPE were included. Non-MPE effusion were included as comparators. 16S rRNA gene V4 region amplicon sequencing was performed. Exact Sequence Variants (ESVs) were used for diversity analyses. The Shannon and Richness indices of alpha diversity and UniFrac beta diversity measures were tested for significance using permutational multivariate analysis of variance. Analyses of Composition of Microbiome was used to identify differentially abundant bacterial ESVs between the groups controlled for multiple hypothesis testing. RESULTS:38 patients with MPE and 9 with non-MPE were included. A subgroup of patients with metastatic adenocarcinoma histology were identified among MPE group (adenocarcinoma of lung origin (LA-MPE) = 11, breast origin (BA-MPE) = 11). MPE presented with significantly greater alpha diversity compared to non-MPE group. Within the MPE group, BA-MPE was more diverse compared to LA-MPE group. In multivariable analysis, ESVs belonging to family S24-7 and genera Allobaculum, Stenotrophomonas, and Epulopiscium were significantly enriched in the malignant group compared to the non-malignant group. CONCLUSION:Our results are the first to demonstrate a microbiome signature according to MPE and non-MPE. The role of microbiome in pleural effusion pathogenesis needs further exploration
Isolation and identification bacteria and fungi of spoilage in kilka meal production in Guilan Province
We Collected 75 samples from fish meal factories in Guilan Province (codes: 1,2,3,4,5,6,7) based on two times per month during June to December 2001. Standard reference are used in bacterial and fungous identification. The isolated bacteria are E. coli Proteus spp., Citrobac ter spp., Shigella spp., Enterobacter Aerogens Salmonella spp., Klebsiella spp., Hafina Alvei Yersinia Enterocolitica, Edwardsiella spp., Staphylococcus spp., Bacillus spp., Pseudomonas spp., Clostridium spp., Aeromonas Hydrophila Streptococcus spp. The hightest and lowest bacterial conamination observed in E. col/ and Hafina Alvei respectively. The most important isolated fungi were Aspergillus spp., Penicillium spp., Yeasts Rizopous spp. The maximum and minimum fungi decay in samples were Penicillium spp., and Rizopus respectively. The most and the least microbial spoilage have been seen in factories 1 and 2 respectively
Engineering novel paracetamol crystals for improved tableting by direct compression for oral drug delivery
Pre-Hospital Trauma Care in Road Traffic Accidents in Kashan, Iran
Background: Iran has one of the highest rates of road traffic accidents (RTAs) worldwide. Pre-hospital trauma care can help minimize many instances of traffic-related mortality and morbidity.
Objectives: The aim of this study was to assess the characteristics of pre-hospital care in patients who were injured in RTAs, admitted to hospital. The focus was mainly directed at evaluating pre-hospital trauma care provided in city streets and roads out of the city.
Patients and Methods: This retrospective study was carried out on all trauma patients, transported by the emergency medical service (EMS) system, who were admitted to Kashan Shahid-Beheshti hospital during the period from March 2011 to March 2012. The patients’ demographic data, location of accident, damaged organs, mechanism of injury, injury severity, pre-hospital times (response, scene, transport), pre-hospital interventions and outcomes, were extracted from the data registry and analyzed through descriptive statistics using SPSS 18 software.
Results: Findings of this study showed that, 75% of RTAs occurred on city streets (n = 1 251). Motor-car accidents were the most frequent mechanism of RTA on city streets (n = 525) (42%), while car rollover was the most frequent mechanism of RTA on roads out of the city (n = 155) (44.4%). The mean pre-hospital time intervals (min); response, scene, and transport for all patients were 6.6 ± 3.1, 10.7 ± 5 and 13 ± 9.8, respectively. The mean pre-hospital time intervals (response, scene, transport) in roads out of the city were higher than those in city streets. There was a significant difference (P = 0.04) in the mortality rates due to RTAs between city streets (n = 46) and roads out of the city (n = 32).
Conclusions: In comparison with road traffic accidents on city streets, trauma patients in RTAs on roads out of the city have longer pre-hospital time intervals and more severe injuries; therefore this group needs more pre-hospital resuscitation interventions
Numerical Simulation of Heat and Fluid Flow Behavior in a Pipe Flow with Sinusoidal Boundary Condition
Abstract -In this investigation a two-dimensional airflow and heat transfer wit
The effect of fructose feeding on intestinal triacylglycerol production and de novo fatty acid synthesis in humans
A high fructose intake exacerbates postprandial plasma triacylglycerol (TAG) concentration, an independent risk factor for cardiovascular disease, although it is unclear whether this is due to increased production or impaired clearance of triacylglycerol (TAG)-rich lipoproteins. We determined the in vivo acute effect of fructose on postprandial intestinal and hepatic lipoprotein TAG kinetics and de novo lipogenesis (DNL). Five overweight men were studied twice, 4 weeks apart. They consumed hourly mixed-nutrient drinks that were high-fructose (30% energy) or low-fructose (<2% energy) for 11 hours. Oral 2H2O was administered to measure fasting and postprandial DNL. Postprandial chylomicron (CM)-TAG and very low-density lipoprotein (VLDL)-TAG kinetics were measured with an intravenous bolus of [2H5]-glycerol. CM and VLDL were separated by their apolipoprotein B content using antibodies. Plasma TAG (P<0.005) and VLDL-TAG (P=0.003) were greater, and CM-TAG production rate (PR, P=0.046) and CM-TAG fractional catabolic rate (FCR, P=0.073) lower when high-fructose was consumed, with no differences in VLDL-TAG kinetics. Insulin was lower (P=0.005) and apoB48 (P=0.039), apoB100 (P=0.013) and NEFA (P=0.013) were higher after high-fructose. Postprandial hepatic fractional DNL was higher than intestinal fractional DNL with high-fructose (P=0.043) and low-fructose (P=0.043). Fructose consumption had no effect on the rate of intestinal or hepatic DNL. We provide the first measurement of the rate of intestinal DNL in humans. Lower CM-TAG PR and CM-TAG FCR with high-fructose consumption suggests lower clearance of CM, rather than elevated production, may contribute to elevated plasma TAG, possibly due to lower insulin-mediated stimulation of lipoprotein lipase
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