摘要:

A versatile programmer having an independent memory is described for controlling a pulsed NMR spectrometer. The programmer utilizes integrated circuits for counting and timing functions to achieve a high degree of flexibility and ease of operation.

ISSN:1073-9149    

DOI:10.1080/10739147508543398

出版商:Taylor & Francis Group    

年代:1975

数据来源: Taylor

摘要:

A luminescent spectrometer has been interfaced with a general purpose digital computer operated in a time-share mode. The computer controls both monochromators and logs the data on magnetic tape. By means of its constituent mode subroutines, the computer controls the spectrometer in any of six modes for the acquisition of luminescent information. It will record the excitation, emission or detailed three-dimensional spectra, integrate luminescent intensity at fixed wavelength coordinates, locate the wavelength region and general form of an unknown spectrum, and record luminescent intensity at fixed wavelength coordinates at selected time intervals, or oscillate either one or both monochromators between two fixed points so that the change of luminescence at either one or two points of the emission and excitation wavelengths can be monitored as a function of time.

ISSN:1073-9149    

DOI:10.1080/10739147508543399

出版商:Taylor & Francis Group    

年代:1975

数据来源: Taylor

摘要:

A miniaturized scintillation probe has been used to follow the movement of particles tagged with radioactive isotopes Ir-192 and Tm-170. The small size of the probe (2 mm x 10 cm) has overcome two traditional powder monitoring problems, that of removing a representative sample and of causing gross bed disturbance by inserting a large probe. The miniature probe may be used in situ or on-line; it gives an extremely rapid response. Two examples of the use of the probe are briefly presented. It has been used to follow the axial mixing in a drum mixer and to follow the segregation of particles due to vibration. The probe has many potential uses for monitoring the progress of particles in pastes, doughs, slurries, and suspensions, in addition to dry powders.

ISSN:1073-9149    

DOI:10.1080/10739147508543400

出版商:Taylor & Francis Group    

年代:1975

数据来源: Taylor

摘要:

A versatile potentiostat system with a digital logic function generator is described. The signal generator features a quartz oscillator which provides pulses of highly constant frequency (1MHz).

ISSN:1073-9149    

DOI:10.1080/10739147508543401

出版商:Taylor & Francis Group    

年代:1975

数据来源: Taylor

摘要:

A digital logic controlled analog voltage generator is described. The function generator provides symmetrical and unsymmetrical triangular waves in either a repetitive or a single sweep mode. Independent control of initial and final potentials, upper and lower potential limits, and sweep rate is provided. The initial scan direction is presentable and the scan direction can be manually reversed while scanning. A manual voltage limit override is also provided.

ISSN:1073-9149    

DOI:10.1080/10739147508543402

出版商:Taylor & Francis Group    

年代:1975

数据来源: Taylor

ISSN:1073-9149    

DOI:10.1080/10739147508543403

出版商:Taylor & Francis Group    

年代:1975

数据来源: Taylor