Abstract: The present invention belongs to the technical field of liquid crystal materials, and in particular relates to a negative liquid crystal composition and a liquid crystal display element or liquid crystal display containing the liquid crystal composition. The present invention discloses a negative dielectric nematic liquid crystal composition, comprising a compound represented by Formula I, one or more compounds represented by Formula II, and one or more compounds represented by Formula III. The liquid crystal composition has a relatively low rotational viscosity (?1), a high clearing point (Cp), a good solubility and a high stability to heat and light (VHR) on the basis of maintaining an appropriate optical anisotropy (?n), and can be used for developing a liquid crystal display element or liquid crystal display with a low cell thickness, a wide temperature for display, and a fast response.

Abstract: The disclosure provides a distributed dispatch method for ubiquitous power Internet of Things based on a transition matrix. The ubiquitous power Internet of Things includes generators. The method includes: S1, setting a marginal cost function of each of the generators, and extracting key cost parameters in the marginal cost function; S2, establishing an optimization model based on the key cost parameters of each of the generators and a communication topology of the ubiquitous power Internet of Things, and solving the optimization model to obtain an optimized transition matrix; and S3, generating a plan of a power output of each of the generators based on the optimized transition matrix and a distributed dispatch protocol to perform a distributed dispatch.

Abstract: The disclosure provides a method for identifying a power feasible region of a virtual power plant, and an apparatus for identifying a power feasible region of a virtual power plant. The method includes: S1, obtaining operation basic data of the internal power-distribution system; S2, establishing a static safety-constrained model of the virtual power plant based on the operation basic data, in which the static safety-constrained model is based on alternating current power flow equations; S3, establishing a power feasible region model of the virtual power plant based on the static safety-constrained model; and S4, calculating the power feasible region model based on the operation basic data and a feasible region vertex enumeration algorithm to obtain the power feasible region of the virtual power plant.

Abstract: The present invention relates to a preparation and purification method for cationic quaternary ammonium salt of sodium hyaluronate in homogeneous medium. By adding a homogeneous solvent and a sodium hyaluronate solid to a vessel, heating the vessel until the contents are dissolved to form a homogeneous system, adding an aqueous solution of 2,3-epoxypropyltrimethylammonium chloride (GTA) to the homogeneous system, then adding a base catalyst, and stirring at a preset temperature to carry out a graft reaction, a graft product is obtained wherein 2,3-epoxypropyltrimethylammonium chloride is grafted to the oxygen atom of the hydroxymethyl group of sodium hyaluronate. By using the method, a graft product wherein 2,3-epoxypropyltrimethylammonium chloride is grafted to the oxygen atom of the hydroxymethyl group of sodium hyaluronate is obtained. Addition of salts is avoided during the reaction, a grafting yield up to 0.69 is obtained, and coagulation occurred to the product is effectively solved.

Abstract: The present disclosure features, inter alia, methods of treating a patient who has been diagnosed with acute myelomonocytic leukemia (the M4 subtype of AML), acute monocytic leukemia (the M5 subtype of AML), or myelodysplastic syndrome (MDS). The methods include administering to the patient a therapeutically effective amount of a retinoic acid receptor-alpha (RARA) agonist or a pharmaceutically acceptable salt thereof. In one or more embodiments (e.g., in treating MDS), administering the RARA agonist or the pharmaceutically acceptable salt thereof commences prior to determining whether the patient expresses a RARA biomarker and/or without consideration of the status of the RARA biomarker.

Abstract: A wearable power management system includes: a bottom coating layer; a bottom center layer disposed above the bottom coating layer; a circuit layer disposed above the bottom center layer; a top center layer disposed above the circuit layer, and a top coating layer disposed above the top center layer. The bottom center layer and the top center layer are made of an ultra-low Young's modulus material. The Young's modulus of the bottom coating layer and the top coating layer is greater than the Young's modulus of the bottom center layer and the top center layer. The circuit layer includes a device layer and a connection layer disposed above the device layer.

Abstract: The light source module may include a plurality of light-emitting units, at least two optical units, and at least two light conversion units. Light from a first light-emitting unit exits as first exiting light processed by a first and second optical units, light from a second light-emitting unit forms first converted light processed by the first optical unit and converted by a first light conversion unit, light from a third light-emitting unit forms second converted light processed by the second optical unit and converted by a second light conversion unit. The second converted light exits as second exiting light processed by the second and first optical unit, and the first converted light serves as third exiting light processed by the first optical unit and is combined with the first and second exiting lights to form a first beam having a first, second, and third wavelength.

Abstract: A wearable power management system includes: a bottom coating layer; a bottom center layer disposed above the bottom coating layer; a circuit layer disposed above the bottom center layer; a top center layer disposed above the circuit layer, and a top coating layer disposed above the top center layer. The bottom center layer and the top center layer are made of an ultra-low Young's modulus material. The Young's modulus of the bottom coating layer and the top coating layer is greater than the Young's modulus of the bottom center layer and the top center layer. The circuit layer includes a device layer and a connection layer disposed above the device layer.

Abstract: The light source module may include a plurality of light-emitting units, at least two optical units, and at least two light conversion units. Light from a first light-emitting unit exits as first exiting light processed by a first and second optical units, light from a second light-emitting unit forms first converted light processed by the first optical unit and converted by a first light conversion unit, light from a third light-emitting unit forms second converted light processed by the second optical unit and converted by a second light conversion unit. The second converted light exits as second exiting light processed by the second optical unit and by the first optical unit, and the first converted light serves as third exiting light processed by the first optical unit and is combined with the first and second exiting lights to form a first beam having a first, second, and third wavelength.

Abstract: A Universal Serial Bus (USB) modem is provided. The USB modem includes a USB plug (1), a Printed Circuit Board (PCB) (2), and a signal input apparatus (3) that connects the USB plug (1) and the PCB (2). The signal input apparatus includes: a support (4) that is disposed on the PCB (2), in which the USB plug is disposed on the support (4); and a connector (5) that is disposed on the PCB and capable of being connected to the USB plug (5). The USB modem implements signal input by adopting the connector (5), thereby extending the service life of the USB modem and greatly reducing the cost.

Abstract: A Universal Serial Bus (USB) modem is provided. The USB modem includes a USB plug (1), a Printed Circuit Board (PCB) (2), and a signal input apparatus (3) that connects the USB plug (1) and the PCB (2). The signal input apparatus includes: a support (4) that is disposed on the PCB (2), in which the USB plug is disposed on the support (4); and a connector (5) that is disposed on the PCB and capable of being connected to the USB plug (5). The USB modem implements signal input by adopting the connector (5), thereby extending the service life of the USB modem and greatly reducing the cost.