Marine luminous bacteria were used to monitor toxicity of alpha(Am-241, U-235+238) and beta(tritium) radionuclide solutions. Increase or inhibition of bacterial luminescence was observed under exposure to radionuclides. Radiation toxicity of Am and chemical toxicity of U were demonstrated. Effects of U were similar to those of stable heavy metals: sensitivy was about 10M. Sensitivity of the bac...

Particle size and enzyme protein loading are design parameters of enzyme immobilization affecting biocatalyst performance that can be varied within broad margins. Their effect on mass transfer limitations at different bulk penicillin G concentrations has been studied with glyoxyl agarose immobilized penicillin G acylase biocatalysts of average particle size of 5·10m and 10·10m at protein loadin...

Active devices such as pumps and mixers have been fabricated in plastic-PDMS hybrid devices. By utilizing functionalized silane primers, bond strength between Polycarbonate or PMMA and PDMS improved in dry and aqueous environments. Plastic-primer-PDMS layers exposed to acid and base solutions at 70 C for 2 hours showed no signs of delamination at 30 psi for pH -1 to 15 and 60 psi for pH 0 to 15...

Abstract. Artificial impervious surface area (ISA) documents the human footprint. Accurate, timely, and detailed ISA datasets are therefore essential for global climate change studies urban planning. However, due to lack of sufficient training samples operational mapping methods, at a 10 m resolution still lacking. To this end, we proposed method leveraging multi-source geospatial data. Based o...

This paper presents the influence of selected flame retardant additives on heat release rate and thermokinetics properties epoxy materials made resin—Epidian 5. The resin underwent modification with use organophosphorus compounds (Roflam F5, Roflam B7) Al(OH)3, Mg(OH)2. fire characteristics analysed were determined using cone calorimeter method, thermal analysis surface morphology was an SEM mi...

Now a days heavy metal contamination along the roadside is matter of concern especially in industrial areas developing countries. The non-degradable nature metals makes them injurious to all living beings. Soil, dust, and plants are main media for entry these into our food chain. Thereby, survey was conducted assess nickel (Ni), copper (Cu) manganese (Mn) levels soil maize crop growing roadside...

The Euler-Bernoulli beam theory is used to establish the vibration differential equation of rigid catenary, cantilever support device equivalent spring, and pantograph three mass block model. double-pantograph-catenary (DPC) dynamic coupling model established by using penalty function, utilize Newmark-β solved model, verifying reliability with field test contact forces catenary system (RCS) Xi’...