Abstract: A device for monitoring a bioreactor is configured for in-situ analysis, e.g., by NIR, without the need for withdrawing a sample into a sample cell or into an ex-situ arrangement. The device can be inserted into a port of the bioreactor and provides a sample detection region defined by an optical element such as a lens and a photodetector. The electrical signal obtained from a photodetector that is part of the device can be directed to an analyzer via a detachable electrical connection.

Abstract: A device for monitoring a bioreactor is configured for in-situ analysis, e.g., by NIR, without the need for withdrawing a sample into a sample cell or into an ex-situ arrangement. The device can be inserted into a port of the bioreactor and provides a sample detection region defined by an optical element such as a lens and a photodetector. The electrical signal obtained from a photodetector that is part of the device can be directed to an analyzer via a detachable electrical connection.

Abstract: A device for monitoring a bioreactor is configured for in-situ analysis, e.g., by NIR, without the need for withdrawing a sample into a sample cell or into an ex-situ arrangement. The device can be inserted into a port of the bioreactor and provides a sample detection region defined by an optical element such as a lens and a photodetector. The electrical signal obtained from a photodetector that is part of the device can be directed to an analyzer via a detachable electrical connection.

Abstract: A device for monitoring a bioreactor includes a sample tube for withdrawing a sample from a bioreactor into a sample cell and elements for analyzing the sample, in the NIR region, for example. Collecting and releasing the sample from and into the bioreactor is conducted using a peristaltic pump that is operated as a reversible/reciprocating pump. A sterile filter separates sample cell tubing from tubing connecting to the peristaltic pump.

Abstract: A culture medium of a micro-physiological (MP) system is analyzed by near infrared (NIR) absorption spectroscopy. The MP system can be microfluidic or a well-plate MP system. Spectra are obtained in real time and are analyzed to provide information such as, for example, the concentration of one or more analytes as a function of time.

Abstract: An immersive headset device is provided that includes a display portion and a body portion. The display portion may include microdisplays having a compact size. The microdisplays may be movable (e.g., rotational) relative to the body portion and can be moved (e.g., rotated) between a flipped-up position and a flipped-down position. In some instances, when the microdisplays are flipped up, the headset provides an augmented reality (AR) mode to a user, and when the microdisplays are flipped down, the headset provide a virtual reality (VR) mode to the user. In certain implementations, the headset includes an electronics source module to provide power and/or signal to the microdisplays. The electronics source module can be attached to a rear of the body portion in order to provide advantageous weight distribution about the head of the user.

Abstract: An immersive headset device is provided that includes a display portion and a body portion. The display portion may include microdisplays having a compact size. The microdisplays may be movable (e.g., rotational) relative to the body portion and can be moved (e.g., rotated) between a flipped-up position and a flipped-down position. In some instances, when the microdisplays are flipped up, the headset provides an augmented reality (AR) mode to a user, and when the microdisplays are flipped down, the headset provide a virtual reality (VR) mode to the user. In certain implementations, the headset includes an electronics source module to provide power and/or signal to the microdisplays. The electronics source module can be attached to a rear of the body portion in order to provide advantageous weight distribution about the head of the user.

Abstract: A precision oven-controlled crystal oscillator (OCXO) uses an adjustment feedback signal that, when mixed with a reference signal from a stable reference oscillator, accurately controls the generation of an output signal from a voltage controlled crystal oscillator (VCXO). An OCXO according to the invention has high stability and high accuracy. The digital OXCO can be manufactured at low cost, and is particularly beneficial for Code Division Multiple Access (CDMA) base station applications in cellular communication networks an the like.

Abstract: A precision oven-controlled crystal oscillator (OCXO) uses an adjustment feedback signal that, when mixed with a reference signal from a stable reference oscillator, accurately controls the generation of an output signal from a voltage controlled crystal oscillator (VCXO). An OCXO according to the invention has high stability and high accuracy. The digital OXCO can be manufactured at low cost, and is particularly beneficial for Code Division Multiple Access (CDMA) base station applications in cellular communication networks an the like.

Abstract: A precision oven-controlled crystal oscillator (OCXO) uses an adjustment feedback signal that, when mixed with a reference signal from a stable reference oscillator, accurately controls the generation of an output signal from a voltage controlled crystal oscillator (VCXO). An OCXO according to the invention has high stability and high accuracy. The digital OXCO can be manufactured at low cost, and is particularly beneficial for Code Division Multiple Access (CDMA) base station applications in cellular communication networks an the like.

Abstract: A precision oven-controlled crystal oscillator (OCXO) uses an adjustment feedback signal that, when mixed with a reference signal from a stable reference oscillator, accurately controls the generation of an output signal from a voltage controlled crystal oscillator (VCXO). An OCXO according to the invention has high stability and high accuracy. The digital OXCO can be manufactured at low cost, and is particularly beneficial for Code Division Multiple Access (CDMA) base station applications in cellular communication networks an the like.