Search Results

71 - 80 of 227 items :

  • "Measurement" x
  • Biomedical Engineering x
Clear All
Defense manifestations of enzymatic and non-enzymatic antioxidants in Ricinus communis L. exposed to lead in hydroponics

acclimatization, saplings of uniform height were selected and treated separately with Pb(NO 3 ) 2 at different concentrations (200 μM and 400 μM) maintained under above conditions. The control plants were without metal treatment. Roots excised after ten days of treatment processed for analysis at various endpoints described as follows. Chlorophyll fluorescence Chlorophyll a (Chl a) fluorescence variables were measured on same leaves which were used previously for leaf gas exchange measurements by using MINI- version of imaging PAM (Heinz Walz GmbH, Effeltrich, Germany

Open access
Lachish River event monitored for toxicity using bioluminescent reporter organisms

therefore be important to include as first alarm monitoring a biologically based toxicity bioassay so as to identify and assess putative biological hazards, whose actual causative agents, if any, may then later be assessed for their presence in the sample. Whole cell based bioreporter bioassays offer advantages as they are sensitive, provide a rapid measurement, are cost effective, and they provide an indication of the type of biological effect caused by the causative substances or other environmental stresses ( 14 ). These sensors do not require any complex sample

Open access
Thorax mapping for localized lung impedance change using focused impedance measurement (FIM): A pilot study

Introduction Focused impedance measurement (FIM) [ 1 , 2 ] is a comparatively new technique that had been developed at the Department of Biomedical Physics and Technology (BMPT) of the University of Dhaka for measuring impedance. It has three versions having 8, 6 and 4 electrodes in special configurations. In a 6-elctrode-FIM, current is driven through two concentric pairs of orthogonal electrodes while another pair of electrodes with a smaller separation is placed at 45° to either of the current drive directions at the central zone for potential measurement

Open access
Toxic, but beneficial compounds from endophytic fungi of Carica papaya

/v)) as the mobile phase. Also, 330 mg of E. sorghinum ’s crude extract (code name: CP1) was separated on Sephadex LH-20 using DCM:MeOH (1:1 (v/v)) as the mobile phase. The metabolites-containing fractions were further purified using semi-preparative HPLC to isolate the pure compounds. Compounds 1 (4.4 mg) and 2 (1.9 mg) were isolated from F. equiseti ’s extract; while compound 3 (3.8 mg) was isolated from the extract of E. sorghinum Analytical HPLC was used to evaluate the purity of the isolated compounds. General procedures NMR measurements of the

Open access
An efficient and automatic ECG arrhythmia diagnosis system using DWT and HOS features and entropy- based feature selection procedure

report from theAmerican Heart Association Statistics Committee and StrokeStatistics Subcommittee, Circulation 2006; 113 6 e85 e151 https://doi.org/10.1161/circulationaha.105.171600 3 Alberdi A, Aztiria A, Basarab, A. Towards an automatic earlystress recognition system for office environments based onmultimodal measurements: a review, J. Biomed. Inform.2016; 59:49–75. https://doi.org/10.1016/j.jbi.2015.11.007 10.1016/j.jbi.2015.11.007 26621099 Alberdi A Aztiria A Basarab A Towards an automatic earlystress recognition system for office environments

Open access
Ultraviolet B induced bioactive changes of enzymatic and non-enzymatic antioxidants and lipids in Trigonella foenum-graecum L. (Fenugreek)

and subfractions of Alangium lamarckii Thwaites. J Chem Pharm Res 2011; 259-267. Kumar R Hemalatha S In-vitro antioxidant activity of alcoholic leaf extract and subfractions of Alangium lamarckii Thwaites J Chem Pharm Res 2011 259 267 25 Lowry OH, Rosebrough NJ, Farr AL, Randall RJ. Protein measurements with Folin-phenol reagent. J Biol Chem 1951; 193:265-275. Lowry OH Rosebrough NJ Farr AL Randall RJ Protein measurements with Folin-phenol reagent J Biol Chem 1951 193 265 275 26 Padmaja M, Sravanthi M, Hemalatha KPJ

Open access
Optimization of in vitro asymbiotic seed germination protocol for Serapias vomeracea

-178. 10.1007/s10535-009-0029-8 Bellusci F Pellegrino G Musacchio A Different levels of inbreeding depression between outcrossing and selfing Serapias species (Orchidaceae) Biol Plant 2009 53 175 178 2 Acemi A, Çobanoğlu Ö, Türker-Kaya S. FTIR-based comparative analysis of glucomannan contents in some tuberous orchids, and effects of pre-processing on glucomannan measurement. J Sci Food Agric 2019; 99: 3681–3686. 30638265 10.1002/jsfa.9596 Acemi A Çobanoğlu Ö Türker-Kaya S FTIR-based comparative analysis of glucomannan contents

Open access
Inhibitory effects of agmatine on monoamine oxidase (MAO) activity: Reconciling the discrepancies

was performed in 96-well polystyrene microliterplates (Corning, NY) and monitored at 37°C from the absorbance change at 492 nm in a Labsystems Multiskan MS microplate reader. In some experiments the reaction was performed in vials, and the overall absorbance spectrum was obtained using a spectrophotometer (Varian). Absorbance measurements were performed every 10 minutes for 20–40 min. Results Following the addition of MAO substrate tyramine, a significant MAO activity could be observed in rat liver homogenates. This was visualized by peroxidase-coupled assay

Open access
Nanobiotechnology medical applications: Overcoming challenges through innovation

DNA Nanorulers - Nanoscale DNA strands of exact size w/fluorescent tags at equal intervals - Enhance the accuracy of nanoscale measurements in microscopy 78 - DNA-based “memory storage” system - Diagnostic extracellular biomolecule detection 4 DNA Integrated Live Cell Circuits that can accurately respond to extracellular signals through the production of a - Stimulate existing cellular communications that induce specific cell states 75 DNA strand that will encode the required response - Future, rewire existing signaling

Open access
Future Biotechnology

forefront. In this context, it is necessary to create a vision in health services by focussing on information and communication technologies and especially preventive health services. The disease prevention system is primarily based on a detailed description of the individual (e.g. clinical, molecular, imaging and sensor-based). The idea of personalised medicine consists of genomic risk assessment along with other clinical trials, and the personalised medicine and personal genomic language is now in common use. Future personalised biosensors can perform measurements that

Open access