摘要:
In one embodiment a method to determine at least one low temperature property of the lubricant oil is disclosed. This method comprises obtaining a base stock, generating a DSC curve of wax versus temperature using a heating curve for the base stock, correlating the heating curve of the base stock with a MRV for a formulated oil, and determining the MRV of the lubricant oil from the correlation of the base stock to the MRV of the corresponding desired base oil.
摘要:
A sensor for measuring heat generated from cells, including a thermopile manufactured by surface-micromachining technology, and a microfluidic flow-channel structure for mixing cells with medium and dividing the mixture into cells and medium. Medium and cells are uniformly mixed using a micro-mixer. The mixture is separated into a medium microfluid and a cell microfluid using the Zweifach-Fung effect, after which signals measured in the two microfluids are amplified. The difference between the two signal values determines the amount of heat generated from the cells. The influence of noise caused by a change in external environment is eliminated. Convection heat dissipation caused by fluid flow is minimized. The sensor accurately measures the amount of heat generated from cells flowing in the microfluidic flow-channel. Diseases such as cancer are diagnosed using the difference between the measured amount of heat generated from cells and the standard amount of heat generated from normal cells.
摘要:
A pre-smoke detector and system for use in the early detection of developing fires whereby vapors of marker chemicals generated during the melting and/or smoldering of common household materials are detected before detection by conventional smoke detectors. Vapors resulting from the heating and resultant vaporization of substances are detected as well as vapors resulting from their breakdown, decomposition, or pyrolysis during the pre-combustion stage. Conventional smoke detectors focus on particle detection and are most effective after a developing fire has produced smoke. To minimize false alarms caused by common household odors, the pre-smoke detectors focus on detecting medium temperature pyrolysis products using sensor coatings that can be consistent with a 10 year operational lifetime and multiple orthogonal detection processes. Since virtually all marker chemicals of interest for pre-smoke detection are heavier than air, a system is described that appropriately integrates with smoke detector alarm systems present in most homes.
摘要:
In one embodiment a method to determine at least one low temperature property of the lubricant oil is disclosed. This method comprises obtaining a base stock, generating a DSC curve of wax versus temperature using a heating curve for the base stock, correlating the heating curve of the base stock with a MRV for a formulated oil, and determining the MRV of the lubricant oil from the correlation of the base stock to the MRV of the corresponding desired base oil.
摘要:
A highly sensitive, quick recovery differential microcalorimeter includes two matchingly formed and cooperatingly disposed flow channels. Each flow channel has two inlets, at least one mixing assembly connected to each fluid inlet, a fluid outlet connected to each mixing assembly, at least one heater element surrounding at least a portion of each fluid outlet, and a plurality of sensors surrounding at least a portion of each fluid outlet. Each of the mixing assemblies includes a mixing chamber and at least one entry manifold connected to a fluid inlet and having a plurality of ports which connect to the mixing chamber.
摘要:
A non-intrusive thermal power monitor and method for determining the amount of sensible heat withdrawn from or added to a fluid stream flowing in a conduit by an unknown source includes a thermal power transfer device that supplies or removes a known amount of heat energy to the fluid in a conduit. First and second temperature sensors sense the temperature of the fluid stream across the thermal power transfer device, and this information is used to determine a heat capacity rate of the fluid in the fluid stream. Additional non-intrusive temperature sensors sense the temperature of the fluid stream as it passes through and across a thermal power sink or heat source and provides a temperature differential. These temperatures are processed in a control circuit, and the thermal power added to or extracted from the fluid stream is determined in the control circuit by multiplying the measured temperature differential by the heat capacity rate of the fluid stream.
摘要:
A MEMS cassette for insertion into a DSC calorimeter and a DSC calorimeter using MEMS cassettes to conduct DSC experiments. The MEMS cassette includes a chip configured to conduct DSC reactions of a sample and reference to derive information regarding the sample.
摘要:
A pre-smoke detector and system for use in early detection of developing fires whereby vapors of marker chemicals generated during the melting and/or smoldering of common household materials are detected before detection by conventional smoke detectors. Vapors resulting from heating and resultant vaporization of substances are detected as well as vapors resulting from their breakdown, decomposition, or pyrolysis during the pre-combustion stage. Conventional smoke detectors focus on particle detection and are most effective after a developing fire has produced smoke. To minimize false alarms caused by common household odors, the pre-smoke detectors focus on detecting medium temperature pyrolysis products using sensor coatings that can be consistent with a 10 year operational lifetime and multiple orthogonal detection processes. Since virtually all marker chemicals of interest for pre-smoke detection are heavier than air, a system is described that appropriately integrates with smoke detector alarm systems present in most homes.
摘要:
The present invention relates to systems and methods of temperature referencing for melt curve data collection. More specifically, the present invention relates to systems and methods for collecting DNA melt curve data for a DNA sample and a temperature reference material.
摘要:
A hydrogen gas sensor element and a hydrogen gas concentration part which has, on a membrane thermally isolated from a substrate, a heater, a temperature sensor and a hydrogen gas absorbing substance are provided in the same microchamber. Hydrogen gas is released from the concentration part and highly concentrated due to heat applied by the heater, and the highly concentrated hydrogen gas is measured by the hydrogen gas sensor element. Because the hydrogen gas absorbing substance exhibits selectivity for hydrogen gas, there is no need for the hydrogen gas sensor element to exhibit selectivity for hydrogen gas. An airflow limiting part is provided in the exit/entrance opening of the microchamber, whereby dilution of hydrogen gas by the entrance of external airflow is prevented. Introduction of the gas to be investigated into the microchamber is performed at predetermined intervals using an introduction means such as a pump.