Gaining chemical control over the thermodynamics and kinetics of photoexcited states is paramount to an efficient sustainable utilization photoactive transition metal complexes in a plethora technologies. In contrast energies charge transfer described by spatially separated orbitals, spin-flip cannot straightforwardly be predicted as Pauli repulsion nephelauxetic effect play key roles. Guided m...

a flow injection method is reported for the determination of ascorbic acid based on amperometric detection, using a cobalt(ii) phthalocyanine (copc) modified graphite-epoxy electrode. the amperometric respons was evaluated with regard to ph, ionic strength of the electrolyte, flow rate of the carrier solution, injected sample volume and conditioning time of the electrode. the limit of detection...

background and objectives: activated carbon is an adsorbent which is mostly employed in order to remove dye from aqueous solutions; however, commercial activated carbon is expensive and this is considered as an obstacle for its usage. therefore, the present study aimed to use waste paper as an inexpensive precursor to produce activated carbon. materials and methods: in the present study, koh wa...

The kinetic mechanism of the unidirectional H2-oxidizing hydrogenase from soybean nodule bacteroids has been investigated with highly purified enzyme. Measurements of the Km for H2 vary from 0.97 to 2.6 microM, and the Km for methylene blue varies from 6 to 17 microM. With H2 and methylene blue as substrates, the initial velocity patterns are intersecting. High levels of methylene blue are inhi...

SUMMARY Groups of ovalbumin sensitised, subscorbutic guinea-pigs were subjected to various regimens for 8-10 weeks. Group 1 were given 0.25 mg/100 g body wt. cholesterol by mouth daily and were stressed with intraperitoneal injections of ovalbumin twice weekly. Group 2 received the cholesterol only and Group 3 were stressed only. Group 4 on the low vitamin C diet only acted as controls. Evans b...

The objective of this study was to determine if the volume of sample used for analysis of soluble reactive phosphate (SRP) could be reduced from 100 mL (as per a widely used standardized procedure) to 50 or 10 mL to reduce the amount of hazardous waste generated from routine analysis of SRP in water samples from rivers, streams, and ponds in an urbanized landscape, in accordance with the princi...

Most of the present-day down-conversion white light-emitting devices (WLEDs) utilize rare-earth elements, which are expensive and facing the problem of shortage in supply. WLEDs based on the combination of orange and blue emitting copper nanoclusters are introduced, which are easy to produce and low in cost. Orange emitting Cu nanoclusters (NCs) are synthesized using glutathione as both the red...

introduction: discharging of industrial colored wastewaters especially into aqueous environments can cause adverse effects on aquatic life due to their toxic natures. in this study, montmorillonite modified by hexadecyltrimethyl ammonium bromide (hdtma-mt) was used for the adsorption of methylene blue (mb). materials and methods: the influence of surfactant loading rate, contact time, ph, adsor...