the toxicity of 7 herbicides to the three cyanobacteria was tested in this work. the results indicated that: (1) there was a highly significant relationship between dried weight or chlorophyll-a and od680nm for tested cyanobacteria; (2) the toxicity of the tested herbicides with the order from high to low was: photosynthesis-inhibiting > accase inhibitor > protox inhibiting herbicides; (3) the ...

the purpose of the present study was to determine the acute toxicity (lc 50 ) of hgcl 2 and cuso 4 in caspian roach ( rutilus caspicus ) and cuso 4 in caspian kutum ( rutilus kutum ). the caspian roach lc 50 values for hgcl 2 at 24, 48, 72, and 96-hrs of exposure, were 0.64, 0.61, 0.42, and 0.28 mg l -1 , respectively, and for cuso 4 were 11.55, 5.08, 2.49, and 1.47 mg l -1 , respectively. the ...

Cancer detection in early stage using a powerful and noninvasive tool is of high global interest. In this experiment, a small-molecular-weight glucose based derivative of Gd3+-1-(4-isothiocyanatobenzyl) diethylene tri amine penta acetic acid (Gd3+-p-SCN-Bn‐DTPA‐DG) as a novel potential MR imaging contrast agents was synthesized. Gd3+-p-SCN-Bn‐DTPA‐DG was synthesized with reacting of Glucosamine...

Most cases of fatal hypothermia are accidental, often in connection with alcoholisation, homelessness, age-related confusedness and others. The phenomenon of paradoxical undressing may be observed. A paradoxical feeling of warmth in the advanced condition of hypothermia leads to the behaviour of undressing, partly or completely. Suicides with intentional hypothermia are rare. Fatal hypothermia ...

vancomycin susceptibility of methicillin-resistant staphylococcus aureus has been changed over time and its average minimum inhibitory concentration increased from 1.5 to 1.75 mg/l. a recently published guideline by the american society of health pharmacist recommended a daily dose of 15-20 mg/kg every 8 to 12 hours of vancomycin to achieve a trough concentration between 15-20 mg/l for treatmen...

the new scientific innovation of engineering nanoparticles (nps) at the atomic scale (diameter

OBJECTIVE To assess toxicities, functional outcomes, and health-related quality of life associated with concurrent chemoradiation therapy (CRT) in patients with head and neck cancer. DESIGN Prospective and retrospective outcomes study. SETTING Tertiary care institution. PATIENTS Participants in the longitudinal Outcomes Assessment Project whose head and neck cancer was treated with CRT be...

background: in the recent years nanostructured materials have been the focus of researches due to their wide-spread possibilities to provide new shapes and structures for some materials. microemulsions can provide uniform nano-sized droplets for templating. microemulsions are isotropic, thermodynamically-stable systems of oil, water and surfactant with a 20-200 nm droplet size. they can be prep...

Recent decades have seen a strong increase in the promise and uses of nanotechnology. This is correlated with their growing release in the environment and there is concern that nanomaterials may endanger ecosystems. Silver nanoparticles (AgNPs) have some of the most varied applications, making their release into the environment unavoidable. In order to assess their potential toxicity in aquatic...