A paramagnetic method of carbon dioxide analysis enables the simultaneous analysis of carbon dioxide and oxygen to be made at 2-min intervals. The method depends upon observing the change of oxygen concentration in a gas mixture before and after absorbing the carbon dioxide component. The carrier-gas in the experiments reported was nitrogen. The output of the paramagnetic meter was measured bot...

We present a new approach for determining the strength of the dipolar solute-induced reaction field, along with the ground- and excited-state electrostatic dipole moments and polarizability of a solvated chromophore, using exclusively one-photon and two-photon absorption measurements. We verify the approach on two benchmark chromophores N,N-dimethyl-6-propionyl-2-naphthylamine (prodan) and coum...

The simple exciter,t designed in conjunction with Robert F. Wilson, is a device for excitation of the nervous system. It combines ease of operation and portability. Power is derived from the 1 10volt A.C. power mains, and the output of the machine is 60-cyde sinusoidal. A switch provides for momentary or continuous excitation. A variac control unit is used to obtain smooth adjustment of voltage...

A semi-automatic method for the routine evaluation of fibrinolytic activity is described. The principle is based upon graphic recording by a multichannel voltmeter of tension drops over a potentiometer, caused by variations in the influence of light upon a light-dependent resistance, resulting from modifications in the composition of the fibrin fibres by lysis. The method is applied to the asse...

This circuit is probed by two voltmeters as sketched in the righthand figure above. Each voltmeter consists of a resistor R R1, R2 and an ammeter that measures the currents Ii and reports the “voltage” Vmeter,i = IiR. 3 The “positive” leads of the voltmeters are connected to points a and c, such that the directions of currents I1 and I2 are as shown when positive. The paradox is that Vmeter1 do...

--Timebase distortions cause nonlinear distortions of the sampled waveforms by equivalent-time sampling instruments. A new model of quantizer is proposed to be used when a large part of timebase distortions is the result of non-random quantization error that is known. A compensation method based on this model is applied to timebase quantization. The simulated results show that the proposed comp...

Two ordinary green light-emitting diodes used as light emitter and detector coupled with simple voltmeter form a complete, cost-effective prototype of a photometric hemoglobinometer. The device has been optimized for cuvette assays of total hemoglobin (Hb) in diluted blood using three different chemical methods recommended for the needs of clinical analysis (namely Drabkin, lauryl sulfate, and ...