Abstract: Disclosed herein are a system, method, and apparatus for arresting flames in an air return line. The apparatus includes a flame barrier containing one or more metal mesh layers and configured to permit airflow there through while preventing flame break-through. The flame barrier can also have or be connected to one or more temperature or pressure sensors configured to detect blockage of airflow through the flame barrier and to detect damage to the flame barrier. The apparatus can also include additional temperature or pressure sensors for detecting the propagation of deflagration in the air return line.

Abstract: Disclosed herein are a system, method, and apparatus for arresting flames in an air return line. The apparatus includes a flame barrier containing one or more metal mesh layers and configured to permit airflow there through while preventing flame break-through. The flame barrier can also have or be connected to one or more temperature or pressure sensors configured to detect blockage of airflow through the flame barrier and to detect damage to the flame barrier. The apparatus can also include additional temperature or pressure sensors for detecting the propagation of deflagration in the air return line.

Abstract: The present invention relates to N-propargylphentermine and its derivatives and the neuroprotective and anti-depressant activity of such compounds as well as therapeutic methods for such compounds.

Abstract: One of the aspects of the present invention relates to a method of obtaining a reproducible extraction process for use as a standard process for extracting a pharmacologically active mixture of chemical components from a plant, the method comprising: (a) extracting a plurality of pharmacologically active mixtures of chemical components from the plant in a plurality of different extraction processes to obtain a plurality of extracts;(b) obtaining a biological fingerprint of the pharmacological activity of each extract from step (a) by conducting at least two in vitro and at least two in vivo pharmacological tests on each extract, wherein each of the tests is known to correlate with effective treatment of a medical condition in a patient;(c) choosing one of the plurality of extracts which displays the best pharmacological activity in step (b);(d) repeating, at least once, the extraction process used to produce the chosen extract of step (c) to produce at least one test extract;(e) (1) obtaining chemical fingerp

Abstract: Disclosed is a ginseng extract, HT1001, comprising a saponin fraction which is about 20-50% by weight of the ginseng extract. The extract is also described in terms of ultraviolet absorbance peak display and total ion count peaks display. Pharmaceutical compositions and methods of use for the extract for treating brain disorders, depression, and improving memory are also disclosed.

Abstract: The present invention is directed to novel N.sup.1 -propargylhydrazines, N.sup.2 -propargylhydrazines and their salts in pharmaceutical compositions. The compounds according to the present invention have at least one of the following activities: monoamine oxidase-A inhibiting, monoamine oxidase-B inhibiting, anti-depressant, anti-anxiety and neuroprotectant activities. These compounds are useful as monoamine oxidase inhibitors and should be useful for the treatment of depression, anxiety and of neurodegenerative diseases such as Parkinson's disease and Alzheimer's disease.

Abstract: An active component of parathyroid hypertensive factor (PHF) which comprises a polypeptide linked to a phospholipid has been identified. The component has activities substantially similar to parathyroid hypertensive factor and therefore is indicated in the control of extracellular calcium uptake, and is related to hypertension and some other diseases in mammals. Method for screening patients for the presence of the circulating factor using antibodies against the component are described. Antagonists of the parathyroid hypertensive factor component have been developed and their use in methods of treating patients with diseases which involve intracellular calcium elevation are also described.

Abstract: Apparatus and method for optically measuring temperature by spectroscopically determining the temperature-induced changes in the wavelength spectrum of light interacting with a semiconductor temperature sensor. The method includes providing illumination from a radiant energy source with a broad wavelength spectrum, guiding the radiant energy to a remote semiconductor sensor, returning the radiant energy after interaction with the semiconductor sensor, and analyzing the returned wavelength spectrum to determine the temperature-induced spectral changes due to the absorption edge of the semiconductor sensor. One embodiment of the invention comprises a quartz-halogen lamp, an optical multiplexer, optical fiber lightguides, a gallium arsenide semiconductor sensor, a fast scan spectrometer, an analog to digital converter and a microprocessor for processing the information of the returned wavelength spectrum for determining and displaying the sensor temperature.

Abstract: A non-metallic fiber-optic device is provided for measuring the level of fluid in a tank, reservoir, or other vessel. Light from a broadband light source is transmitted through a fiber optic waveguide and an optical coupler to an optical pipe sensor which is immersed in the fluid to be measured. The optical pipe sensor includes a monotonically varied diffraction grating in the surface and along the length of the sensor which serves to retroreflect wavelengths of light as a function of the local spacing of the diffraction grating. For light entering the sensor from the waveguide, wavelengths of light corresponding to the local spacing of the diffraction grating above the fluid level are retroreflected, whereas wavelengths of light corresponding to the diffraction grating spacing below the fluid level either escape into the fluid, are absorbed, or are coupled to a return fiber to be detected.