Abstract: Techniques are disclosed for systems and methods associated with a powertrain for a micro-mobility fleet vehicle. The fleet vehicle may include at least one drive wheel to provide tractive contact between the flee vehicle and a road surface, an electric motor mechanically coupled to the drive wheel and configured to provide motive force for the fleet vehicle, a brake resistor configured to provide dynamic braking of the motor, and a motor controller electronically coupling the brake resistor to the motor. The motor controller may be configured to control the motive force provided by the motor using the brake resistor. The motor controller may be configured to limit a speed, power, and/or acceleration of the motor using the brake resistor based on an operational environment of, and/or on a directive received by, the fleet vehicle. The brake resistor may provide a relatively wide range of traction control for the fleet vehicle.

Abstract: A sensing device includes a robotic hand, an electrode and a triboelectric sensing layer. The robotic hand includes at least one robot finger. One robot finger is integrated with an electrode layer which is functionalized with a triboelectric sensing layer. The triboelectric sensing layer is composed of plurality of nanostructures including Tellurium. The robot hand with triboelectric sensing layer undergoes contact and separation with the target analyte solution having mercury ions which leads to the formation of mercury telluride owing to the highly selective between of mercury ions to the Tellurium surface. After contacting with the target analyte, the electron transfer ability of the nanostructures attached to robot finger is altered. This process of contact electrification causes the induction of electrons to the electrode layer generating the triboelectric output voltage. The triboelectric output voltage is utilized to determine the concentration of mercury ions in the target analyte solution.

Abstract: Methods and systems of harvesting a cell product from a cell culture by culturing cells in a fluid medium until the cells have produced a cell product at a harvest concentration are disclosed. The cells are cultured in a cell culture system including a bioreactor connected to an ATF device. The methods include draining fluid medium from the bioreactor through the outlet and the ATF device until the bioreactor volume reaches a predetermined volume, and the ATF column yields at an ATF outlet a liquid containing cell product and passes fluid medium with a concentration of cell product that is lower than the harvest concentration back into the bioreactor, extracting the liquid containing cell product from the ATF outlet, refilling the bioreactor with sterile phosphate buffered saline or fluid medium without any cell product, and repeating steps until a desired amount of cell product has been removed.

Abstract: Methods and systems of harvesting a cell product from a cell culture by culturing cells in a fluid medium until the cells have produced a cell product at a harvest concentration are disclosed. The cells are cultured in a cell culture system including a bioreactor connected to an ATF device. The methods include draining fluid medium from the bioreactor through the outlet and the ATF device until the bioreactor volume reaches a predetermined volume, and the ATF column yields at an ATF outlet a liquid containing cell product and passes fluid medium with a concentration of cell product that is lower than the harvest concentration back into the bioreactor, extracting the liquid containing cell product from the ATF outlet, refilling the bioreactor with sterile phosphate buffered saline or fluid medium without any cell product, and repeating steps until a desired amount of cell product has been removed.

Abstract: Methods and systems of harvesting a cell product from a cell culture by culturing cells in a fluid medium until the cells have produced a cell product at a harvest concentration are disclosed. The cells are cultured in a cell culture system including a bioreactor connected to an ATF device. The methods include draining fluid medium from the bioreactor through the outlet and the ATF device until the bioreactor volume reaches a predetermined volume, and the ATF column yields at an ATF outlet a liquid containing cell product and passes fluid medium with a concentration of cell product that is lower than the harvest concentration back into the bioreactor, extracting the liquid containing cell product from the ATF outlet, refilling the bioreactor with sterile phosphate buffered saline or fluid medium without any cell product, and repeating steps until a desired amount of cell product has been removed.

Abstract: The present invention provides a polyurethane elastomer ballast mat and the preparation thereof, and a railway track bed and railway facilities using the same. The polyurethane elastomer ballast mat according to this invention comprises a reaction product prepared by spraying a reaction system comprising a polyisocyanate, a polyol, a chain extender, a blowing agent and a catalyst, on the surface of a railway roadbed or on one surface of a ballast mat shielding to conduct a reaction. The technical solution of the present invention makes it possible to provide ballast mats with different mechanical properties, shapes, thicknesses and sizes, depending on particular installation conditions, in order to adapt to various requirements for installation and use in railway construction.

Abstract: The present invention relates to polyurethane, and specifically relates to a polyurethane microcellular elastomer, a method for preparing the same, and the use thereof. The polyurethane microcellular elastomer is the reaction product of (1) an isocyanate-terminated prepolymer obtained by reacting an isocyanate with a first polyol, (2) a second polyol, (3) a chain extender and (4) a catalyst, wherein the first polyol and/or second polyol comprise at least one polycarbonate polyol obtained by reacting carbon dioxide with an alkene oxide. This method of preparing polyurethane microcellular elastomer can not only reduce the demand for raw materials derived from petrochemicals, but also realize the utilization of the “greenhouse gas” carbon dioxide.

Abstract: The present invention pertains to a shoe upper, the method for preparing the same and the use thereof. This invention provides a method for preparing shoe upper by spraying polyurethane reaction system, avoids the complicated steps of cutting, shaping, stitching and bonding, simplify the production process, reduces the equipment requirements, saves cost and improves the production efficiency.

Abstract: Embodiments of the present invention generally relate to novel fed-batch fermentations wherein processes of DO-stat and pH-stat are combined for nutrient feeding control.

Abstract: A memory card structure includes a substrate, B-Stage glue, an adhered layer, a chip, wires, and a compound layer. The substrate has an upper surface, which is formed with first electrodes and golden fingers electrically connected to the first electrodes. The B-Stage glue is coated on the periphery of upper surface of the substrate. The adhered layer is coated on the upper surface of the substrate. The chip is formed with bonding pads, and is adhered on the upper surface of the substrate by the B-Stage glue and the adhered layer. The plurality of wires are electrically connected the bonding pads of the chip to the first electrodes of the substrate. And the compound layer is encapsulated on the chip and the wires.

Abstract: A module card structure includes a structure, a first chip, a second chip, an adhesive layer, and a compound layer. The substrate has an upper surface on which a plurality of golden fingers are formed, and a lower surface. The first chip is mounted on the upper surface of the substrate and is electrically connected to the golden fingers by first wires. The second chip is adhered to the upper surface of the substrate by the adhesive layer, which includes glue and filling elements, and is electrically connected to the golden fingers by second wires. The compound layer is encapsulated on the first chip and the second chip.

Abstract: A module card structure includes a structure, a first chip, a second chip, an adhered layer, and a compound layer. The substrate has an upper surface on which a plurality of golden finger are formed, and a lower surface. The first chip is mounted on the upper surface of the substrate and is electrically connected to the golden finger by wires. The second chip is adhered to the upper surface of the substrate by adhered layer, which includes glue and filled elements, and is electrically connected to the golden finger by wires. The compound layer is encapsulated on the first chip and second chip for encapsulating the first chip and second chip.

Abstract: Embodiments of the present invention generally relate to novel fed-batch fermentations wherein processes of DO-stat and pH-stat are combined for nutrient feeding control.

Abstract: Embodiments of the present invention generally relate to novel fed-batch fermentations wherein processes of DO-stat and pH-stat are combined for nutrient feeding control.