A PHOTOELECTRIC PHOTOMETER FOR CHEMICAL ANALYSIS

a time-series analysis of the demand for life insurance in iran

با توجه به تجزیه و تحلیل داده ها ما دریافتیم که سطح درامد و تعداد نمایندگیها باتقاضای بیمه عمر رابطه مستقیم دارند و نرخ بهره و بار تکفل با تقاضای بیمه عمر رابطه عکس دارند

A Photoelectric Densitometer for Use with Suspensions

A device for quickly and accurately measuring the population density of a suspension of microorganisms, permitting the preparation of yeast suspensions of known density to within 1 per cent error, was constructed with two Visitron photoelectric cells, a single light of high intensity and a good Wheatstone bridge for balancing the currents from the two photoelectric cells. A large Pyrex milk cul...

Synthesis and physicochemical properties of CuMn2O4 nanoparticles; a potential semiconductor for photoelectric devices

CuMn2O4 nanoparticles, a semiconducting materials with tunable functionalities in solid oxide fuel cell, was successfully synthesized via a sol-gel method using its respective metal cations sources i.e. Cu2+ and Mn2+ in an appropriate complexing agent.The vibrational frequencies below 1000 cm-1 of the obtained materials confirmed the formation of metal-oxygen (M-O:Cu-O, Mn-O) bond in the sample...

A photoelectric sound-activated relay

cues and they often take precedence over intra-maze stimuli. One possible disadvantage of the present apparatus should be mentioned. A few Ss in the SOW group of each experiment were observed to strenuously oppose box withdrawal throughout training by wedging themselves into the corner between the fixed end wall and the moving floor and side walls. These Ss seldom avoided. Many other Ss display...

A lithium internal-standard flame photometer.