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公开(公告)号：US11119246B2
公开(公告)日：2021-09-14
申请号：US16138730
申请日：2018-09-21
摘要： An apparatus and method for measuring a local acceleration of gravity includes releasing a ferrous rod having a regular alternating pattern of reflective and non-reflective portions on a surface thereof from an electromagnetic holder so that the rod falls with a substantially vertical acceleration and substantially no angular velocity about a center of mass of the rod. The falling rod is illuminated with a light emitting diode (LED) configured to emit infrared (IR) light, and IR light emitted by the LED and reflected by the falling rod is detected with a photodiode. A two-state signal is generated corresponding to an illumination state of the photodiode by the reflected IR light. Times of transitions between the two states in the generated signal are calculated to determine kinematic data, and the kinematic data is fitted to a predetermined curve to calculate a local acceleration of gravity.
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公开(公告)号：US20190033485A1
公开(公告)日：2019-01-31
申请号：US16138730
申请日：2018-09-21
摘要： An apparatus and method for measuring a local acceleration of gravity includes releasing a ferrous rod having a regular alternating pattern of reflective and non-reflective portions on a surface thereof from an electromagnetic holder so that the rod falls with a substantially vertical acceleration and substantially no angular velocity about a center of mass of the rod. The falling rod is illuminated with a light emitting diode (LED) configured to emit infrared (IR) light, and IR light emitted by the LED and reflected by the falling rod is detected with a photodiode. A two-state signal is generated corresponding to an illumination state of the photodiode by the reflected IR light. Times of transitions between the two states in the generated signal are calculated to determine kinematic data, and the kinematic data is fitted to a predetermined curve to calculate a local acceleration of gravity.
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公开(公告)号：US11573218B2
公开(公告)日：2023-02-07
申请号：US17396270
申请日：2021-08-06
摘要： A method of measuring a concentration of NO2 in a gaseous mixture using a multimode laser beam that covers a tunable spectral range with a width of no more than 5 nm, wherein the multimode laser beam provides a high resolution transmittance spectrum at an absorption cross section of NO2 molecules, and a system for measuring the concentration of NO2 in the gaseous mixture. Various combinations of embodiments of the system and the method are provided.
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公开(公告)号：US10126172B1
公开(公告)日：2018-11-13
申请号：US15784309
申请日：2017-10-16
IPC分类号： G01J4/04 , F21V23/00 , F21Y115/10
摘要： A Faraday rotation device includes a light source configured to transmit a light beam; a first rotation stage polarizer configured to forward the light beam from the light source at a predetermined reference polarization angle; a quartz cell configured to receive the light beam from the first rotation stage polarizer at the predetermined reference polarization angle; one or more stacked ring permanent magnets coaxially fitted around the quartz cell; a stepper motor configured to adjust a rotational motion of a second rotation stage polarizer connected to the stepper motor, wherein the second rotation stage polarizer is configured to change a polarization angle of the light beam received from the quartz cell; a light detector; and an electronic circuit board configured to record a change in angle between the predetermined reference polarization angle and the changed polarization angle.
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公开(公告)号：US20180292567A1
公开(公告)日：2018-10-11
申请号：US16000623
申请日：2018-06-05
摘要： An apparatus and method for measuring a local acceleration of gravity includes releasing a ferrous rod having a regular alternating pattern of reflective and non-reflective portions on a surface thereof from an electromagnetic holder so that the rod falls with a substantially vertical acceleration and substantially no angular velocity about a center of mass of the rod. The falling rod is illuminated with a light emitting diode (LED) configured to emit infrared (IR) light, and IR light emitted by the LED and reflected by the falling rod is detected with a photodiode. A two-state signal is generated corresponding to an illumination state of the photodiode by the reflected IR light. Times of transitions between the two states in the generated signal are calculated to determine kinematic data, and the kinematic data is fitted to a predetermined curve to calculate a local acceleration of gravity.
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公开(公告)号：US11827538B2
公开(公告)日：2023-11-28
申请号：US17689514
申请日：2022-03-08
发明人： Isam H. Aljundi , Watheq Al-Basheer
摘要： A hybrid system and a method for hybrid desalination and crystallization of seawater is provided. The hybrid system includes a reverse osmosis unit configured to separate the seawater from dissolved solids, generate a first quantity of purified water, and generate a second quantity of wastewater. The hybrid system also includes a pressure exchanger configured to lower a pressure of the second quantity of wastewater to atmospheric pressure. The hybrid system further includes a laser induced shock wave crystallizer configured to trigger nucleation of the dissolved salts in the second quantity of wastewater, expel a third quantity of wastewater having a second concentration of dissolved salts, and expel a fourth quantity of salt crystals. The hybrid system also includes a collection vat for receiving the salt crystals. The hybrid system further includes a high pressure pump configured to recycle the third quantity of wastewater back to the reverse osmosis unit.
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公开(公告)号：US11162927B2
公开(公告)日：2021-11-02
申请号：US16789692
申请日：2020-02-13
摘要： A method of measuring a concentration of NO2 in a gaseous mixture using a multimode laser beam that covers a tunable spectral range with a width of no more than 5 nm, wherein the multimode laser beam provides a high resolution transmittance spectrum at an absorption cross section of NO2 molecules, and a system for measuring the concentration of NO2 in the gaseous mixture. Various combinations of embodiments of the system and the method are provided.
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公开(公告)号：US20190331651A1
公开(公告)日：2019-10-31
申请号：US15962564
申请日：2018-04-25
摘要： A method of measuring a concentration of NO2 in a gaseous mixture using a multimode laser beam that covers a tunable spectral range with a width of no more than 5 nm, wherein the multimode laser beam provides a high resolution transmittance spectrum at an absorption cross section of NO2 molecules, and a system for measuring the concentration of NO2 in the gaseous mixture. Various combinations of embodiments of the system and the method are provided.
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公开(公告)号：US11668688B2
公开(公告)日：2023-06-06
申请号：US17396318
申请日：2021-08-06
CPC分类号： G01N33/0037 , G01N21/314 , G01N21/39 , G01N21/61 , G01N2021/3155
摘要： A method of measuring a concentration of NO2 in a gaseous mixture using a multimode laser beam that covers a tunable spectral range with a width of no more than 5 nm, wherein the multimode laser beam provides a high resolution transmittance spectrum at an absorption cross section of NO2 molecules, and a system for measuring the concentration of NO2 in the gaseous mixture. Various combinations of embodiments of the system and the method are provided.
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公开(公告)号：US10260952B1
公开(公告)日：2019-04-16
申请号：US16152116
申请日：2018-10-04
IPC分类号： G01J4/04 , F21Y115/10 , F21V23/00
摘要： A Faraday rotation device includes a light source configured to transmit a light beam; a first rotation stage polarizer configured to forward the light beam from the light source at a predetermined reference polarization angle; a quartz cell configured to receive the light beam from the first rotation stage polarizer at the predetermined reference polarization angle; one or more stacked ring permanent magnets coaxially fitted around the quartz cell; a stepper motor configured to adjust a rotational motion of a second rotation stage polarizer connected to the stepper motor, wherein the second rotation stage polarizer is configured to change a polarization angle of the light beam received from the quartz cell; a light detector; and an electronic circuit board configured to record a change in angle between the predetermined reference polarization angle and the changed polarization angle.
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