Abstract: The present disclosure provides a sampling device of acquiring a graphite sample from a reactor graphite block, and the sampling device includes: a support placed on the reactor graphite block; a lifter configured to be insertable into the reactor graphite block in a first direction; a sampling actuator arranged at an end of the lifter and configured to acquire a graphite sample from the reactor graphite block. The sampling actuator is configured to insert into the reactor graphite block in a second direction, and the first direction is substantially perpendicular to the second direction.

Abstract: Methods for producing a compound of Formula I, Formula I, wherein R1 and R2 are independently a i) linear or branched or cyclic, ii) saturated or unsaturated, and iii) substituted or unsubstituted hydrocarbon group comprising 8 to 20 carbon atoms; R3 is a hydrocarbon group; n is an integer from 2 to 5, m is an integer from 30 to 70, and L is a linker. The method includes: a) contacting a fatty acid having a chemical formula of R1—COOH and a primary amine having a chemical formula of R2—NH2 to form an amide having a chemical formula of R1—C(O)—NH—R2; b) contacting the amide with a reducing agent to form a secondary amine having a chemical formula of R1—CH2—NH—R2; and c) contacting the secondary amine with a polyolefin-glycol compound to form the compound of Formula I. Intermediates produced in the method, salts of compound of Formula I and of intermediates.

Abstract: A movable container includes: a driving mechanism, a sensing device, and a control circuit. The driving mechanism is arranged to provide a momentum to the movable container. The sensing device is arranged to sense a motion feature in accordance with the momentum provided by the driving mechanism. The control circuit is coupled to the sensing device and the driving mechanism and arranged to calculate a calculated mass of the movable container in accordance with the motion feature sensed by the sensing device. The control circuit is coordinated with the driving mechanism and the sensing device via a user input. In some embodiments, the movable container is a suitcase or a luggage.

Abstract: A movable container includes: a driving mechanism, a sensing device, and a control circuit. The driving mechanism is arranged to provide a momentum to the movable container. The sensing device is arranged to sense a motion feature in accordance with the momentum provided by the driving mechanism. The control circuit is coupled to the sensing device and the driving mechanism and arranged to calculate a calculated mass of the movable container in accordance with the motion feature sensed by the sensing device. The control circuit is coordinated with the driving mechanism and the sensing device via a user input.

Abstract: A method for covalently cross-linking hyaluronic acid (HA) and hydroxypropyl methylcellulose (HPMC) by a diepoxide crosslinking agent. The method includes the following steps: a) mixing HA and HPMC in water; b) adding an alkali as a catalyst and a diepoxide as a crosslinking agent; c) neutralizing with hydrochloric acid and dehydrating with ethanol and acetone; and d) drying in vacuum and redissolving in water to obtain an HA-HPMC composite gel.