A new technique for determining the parasitic source resistance in Heterostructure Field-Effect Transistors (HFET’s) is preManuscript received March 8, 1990; revised April 20, 1990. This work has been partially sponsored by an EECS Special Projects Fund from the MIT and by a TRW Scholarship from the MIT Undergraduate Research Opportunities Program. The review of this brief was arranged by Assoc...

View Video S1 The recurrent laryngeal nerve (RLN) is at risk during pediatric surgery of the neck, mediastinum, and chest. RLN injury for esophageal atresia, tracheoesophageal fistula, tracheobronchomalacia (TBM) established in literature as often courses through operative field. Identifying protecting particularly difficult neonates, aberrant anatomy, reoperative cases.1, 2 Intraoperative moni...

Computer managed iontophoretic device was constructed and successfully applied in regeneration study. General scheme of the device, the method of dye injection, and associated software is discussed. The Device and Results Iontophoresis can be used as a method to mark a living cell and its progeny cells with a vital charged dye or to deliver active substances to a cell. Of particular interest ar...

The oxidation-reduction (redox) potential (Eh) of a system deence shown by variation of the redox potential, the degree of difference could be explored at an initial moderating level for rives from the measurement of transfer of electrons between a pair of electrodes in relation to the standard hydrogen electrode. The comparison with oxidizing or reducing levels. The accumulation or depletion o...

Silicon, glass, and polymer microchip devices (lab-ona-chip) have found a diverse range of analytical and preparative applications (1 ). Prominent applications include protein and nucleic acid electrophoresis (2 ), PCR (3, 4 ), and cellular analysis (5 ). Microchip devices have also demonstrated promise in semen analysis as part of the evaluation of male infertility. The key parameters of semen...

We studied superconducting to normal state current-driven transitions in Ferromagnetic Cobalt/Cobalt Oxide/Superconducting Indium stripes of widths ranging from 3 lm to 20 lm. The narrower stripes can be set up in a high or low critical current state by driving the magnetic domain structure of the thin Co film either in an almost uniform or non-uniform state of magnetization. In the first case ...

Separation by implantation of oxygen (SIMOX) is the leading technology for silicon-on-insulator ( SOI), a device fabrication method with great promise for use in satellites and ultralarge scale integration. SIMOX buried oxides contain trapping centers that may play a significant role in the operation of devices utilizing this technology. We study trapping centers in SIMOX buried oxides with a c...

This report discusses the algorithm described in ITU-T Recommendation P.56 for measuring the active speech level. Method B in P.56 determines a speech activity factor representing the fraction of time that the signal is considered to be active speech (as opposed to background idle noise) and the corresponding active level for the speech part of the signal. The basic algorithm generates an envel...

A fully automatized internal friction (IF) measuring system was constructed. It measures IF by proceeding a waveform analysis of the free decay vibration. The choosen method eliminates disturbances due to parasitic motions of specimen and shows a weak dispersion even at low strain amplitudes. It allows to measure short free decay keeping the specimen vibrating in quasi stationnary conditions. T...