Abstract: An explosive detection system for detecting explosive trace in a sample includes a detection unit, and a processing unit. The detection unit that receives a desorbed sample includes a first heater, a second heater, a first resistance temperature detector (RTD), a second RTD, and an amplifier. The first heater is exposed to the desorbed sample. The first heater and the second heater are supplied with specific voltage for three or more experiments. The first RTD and the second RTD measure changes in resistance due to heating of the first heater and the second heater to calculate voltages across the first RTD and the second RTD. The amplifier amplifies the voltages to calculate a differential voltage for each of the three or more experiments, and converts the differential voltage into a digital signal. The processing unit is configured to process the digital signal to detect explosive trace in the desorbed sample.

Abstract: A computer-implemented method for email journaling may include (1) maintaining, by a journaling mail server, a cache that associates together an update sequence number that indicates a version of an email distribution list and email addresses that are both designated as targets for journaling and included within the version of the email distribution list identified by the update sequence number, (2) receiving, by the server, an email that includes, within at least one header field, a candidate update sequence number and an email distribution list identifier, (3) determining that the update sequence number in the cache is a match for the candidate update sequence number in the header field, and (4) identifying, based on the match between the update sequence number and the candidate update sequence number, the email addresses specified in the cache as the targets for journaling. Various other methods, systems, and computer-readable media are also disclosed.

Abstract: Various embodiments of the methods and systems disclosed herein provide a detection system that detects concentration of an analyte biomolecule (e.g., a protein, a biomarker, etc.) in a sample (e.g., a blood sample) to diagnose a disease. The detection system includes one or more micro-cantilevers that are immobilized with one or more receptor biomolecules to detect a concentration of an analyte biomolecule in the sample. The detection system further compares the concentration of the analyte biomolecule with a threshold value for diagnosing a disease.

Abstract: An explosive detection system for detecting explosive trace in a sample includes a detection unit, and a processing unit. The detection unit that receives a desorbed sample includes a first heater, a second heater, a first resistance temperature detector (RTD), a second RTD, and an amplifier. The first heater is exposed to the desorbed sample. The first heater and the second heater are supplied with specific voltage for three or more experiments. The first RTD and the second RTD measure changes in resistance due to heating of the first heater and the second heater to calculate voltages across the first RTD and the second RTD. The amplifier amplifies the voltages to calculate a differential voltage for each of the three or more experiments, and converts the differential voltage into a digital signal. The processing unit is configured to process the digital signal to detect explosive trace in the desorbed sample.

Abstract: A method for maintaining group membership records includes 1) maintaining a record of group memberships for a membership hierarchy, the membership record identifying a direct relationship between a first object and a second object in the membership hierarchy, 2) receiving a membership update indicating that, as of a first point in time, a direct relationship between the second object and a third object changed, 3) updating the record of group memberships to reflect the change in the relationship between the second object and the third object, 4) deducing, based on the membership update and the record of group memberships, a change in an indirect relationship between the first object and the third object as of the first point in time, and 5) providing a view of object relationships within the membership hierarchy as the object relationships exist at the first point in time and a historical record of object relationships.

Abstract: A method for maintaining group membership records includes 1) maintaining a record of group memberships for a membership hierarchy, the membership record identifying a direct relationship between a first object and a second object in the membership hierarchy, 2) receiving a membership update indicating that, as of a first point in time, a direct relationship between the second object and a third object changed, 3) updating the record of group memberships to reflect the change in the relationship between the second object and the third object, 4) deducing, based on the membership update and the record of group memberships, a change in an indirect relationship between the first object and the third object as of the first point in time, and 5) providing a view of object relationships within the membership hierarchy as the object relationships exist at the first point in time and a historical record of object relationships.