this study was conducted to identify emission characteristics of certain hazardous substancescontained in the plastic of used home electrical and electronic appliances keeping in view compliance with therestriction of hazardous substances (rohs) directive and to estimate the possibility of safe recyclingpractices. according to the results, the concentration of cadmium, lead, mercury and chromiu...

Abstract This study aimed to apply the near infrared reflectance spectroscopy (NIRS) for a robust and fast detection method fraudulence in patchouli oil plant. Pure sample adulterated with ethanol were used as samples this work. Spectral data form of transmittance acquired wavenumbers range from 400 4000 cm −1 . A total 60 mixed using six difference concentration while 10 remaining pure without...

BACKGROUND In this cross-sectional study the association between psychosocial stress, demoralization and the consumption of psychotropic substances in veterinarians was examined using data from a sample of 1,060 subjects (52.7% response). METHODS Multiple logistic regression models were used to determine risk factors for psychosocial stress, demoralization, tobacco consumption (not greater, l...

In this paper, we report the results of quality control based in physicochemical characterization and impurities determination of three samples of fluconazole drug substances marketed in Morocco. These samples were supplied by different pharmaceuticals companies. The sample A, as the discovered product, was supplied by Pfizer, while samples B and C (generics), were manufactured by two different...

BackgroundStudies with emphasis on pure and mixed-species biofilms are of significant importance in understanding biofilm formation mechanisms during microbial infections. This research aims to evaluate pure- dual-species Escherichia coli (code A), Staphylococcus aureus B), Klebsiella pneumoniae C) Pseudomonas aeruginosa D) pathogenic bacterial species their production exopolysaccharides at lab...

A CHARACTERISTC of biochemistry is its great heritage of colour tests which have been devised to meet the demand for means of identifying substances of complex or unknown constitution where the more exact methods of pure organic chemistry were of no avail. Some of these biochemical tests are of a degree of delicacy and specificity almost comparable to biological reactions; but, owing to the dif...

It is our purpose in this communication to give the results of some work upon complement fixation in syphilitic and other sera, using specific antigens prepared from pure cultures of Spirochceta pallida, Spirochceta pertenuis, and Spirochceta microdentia. The results are compared with those obtained with the same sera and a stock antigen used in our routine Wassermann tests, this antigen consis...

Only a small percentage of insect species are pests. However, pest species cause significant losses in agricultural and forest crops, and many are vectors of diseases. Currently, many scientists are focused on developing new tools to control insect populations, including secondary plant metabolites, e.g., alkaloids, glycoalkaloids, terpenoids, organic acids and alcohols, which show promise for ...

In 1936 Szent-Gybrgyi and coworkers (1) described the isolation of a material which was capable of increasing capillary resistance in man, and which they called citrin or vitamin P. Subsequent work has shown that many substances have this property, and vitamin P activity has been attributed variously to flavones, flavanones, and flavonols. Higby (2) found that crude hesperidin possessed vitamin...

The substances precipitated by CO(2) from the serum of chickens 1 or 2 years old slightly increased the activity of pure cultures of a 10 year old strain of fibroblasts, an indication that a growth-promoting substance had been obtained from the serum. The rate of growth of fibroblasts was slower in serum deprived of its globulins and the increase of the inhibiting effect of the treated serum is...