摘要:
The invention relates to Polysaccharide-coated GoldMag particles (DPGPs) and the method of its synthesis, which characterized GoldMag particles as a core and natural or synthetic biodegradable polysaccharide such as dextran, cyclodextrin and derivatives as shell. DPGPs are synthesized by mixing Polysaccharide-coated GoldMag particles (DPGPs) with drug through physical bond. The preparation of the drug-loaded composite particles include: preparing the polysaccharide-coated GoldMag particles and then loading the drug on the polysaccharide-coated GoldMag particles. The drug-loading process is carried out through directly mixing the polysaccharide-coated GoldMag particles with the drug solution by the shaker. That means the polysaccharide-coated GoldMag particles load the drug through affinity adsorption.
摘要:
The present invention relates to crosslinked dextran magnetic composite microparticles and a preparation process and a using method thereof. The composite microparticles comprise magnetic nanoparticles and dextran with crosslinked structure, wherein the magnetic nanoparticles are dispersed in the dextran with crosslinked structure. The process for preparing the composite microparticles comprises: preparing a dextran solution; synthesizing dextran magnetic composite microparticles; and synthesizing the crosslinked dextran magnetic composite microparticles. The using method of composite microparticles comprises: preparing crosslinked dextran magnetic composite microparticles loaded with anti-cancer drug; and adding a sustained-releasing solution thereto.
摘要:
A preassembled medicine mixer comprises a rotary sleeve (4), a guide sleeve I (3), a guide sleeve II (6), a guide part, a dosing barrel (1), and a dosing double needle (2). The guide sleeve I (3) extends into the guide sleeve II (6) and is connected to the rotary sleeve (4). A guide groove (8) is provided on the side wall of the guide sleeve I (3), and two ends of the guide groove (8) are extended by a distance towards opposite directions. A guide spiral groove (7) is provided on an inner wall of the guide sleeve II (6). The guide part is disposed in the guide sleeve I (3) and has a guide block (9) at the outer side thereof. The guide block (9) penetrates through the guide groove (8) and extends into the guide spiral groove (7). In use, the rotary sleeve (4) is rotated to drive the guide part to rapidly move downwards and push a medicine container (17); an upper needle tip of the dosing double needle (2) pierces a sealing plug on the medicine container (17), and a lower needle tip pierces a diaphragm (23) in an interface (22), so that the medicine container (17) is instantly communicated with an infusion container (14), thereby implementing sterile closeness during the entire process of transportation, storage, butt joint, medicine mixing, and infusion.
摘要:
An interface circuit to an electromagnetic flow sensor is described. In an example, it can provide a DC coupled signal path from the electromagnetic flow sensor to an analog-to-digital converter (ADC) circuit. Examples with differential and pseudo-differential signal paths are described. Examples providing DC offset or low frequency noise compensation or cancellation are described. High input impedance examples are described. Coil excitation circuits are described, such as can provide on-chip inductive isolation between signal inputs and signal outputs. A switched mode power supply can be used to actively manage a bias voltage of an H-Bridge, such as to boost the current provided by the H-Bridge to the sensor coil during select time periods, such as during phase shift time periods of the coil, which can help reduce or minimize transient noise during such time periods.
摘要:
A process is provided for the synthesis of furan and related compounds by vapor phase decarbonylation of furfural and derivatives, using a palladium/alumina catalyst that has been promoted with an alkali carbonate. Catalyst lifetime is improved. The catalyst can be regenerated in situ by feeding a mixture of air and steam, with a composition of between about 2% and about 40% air, to the catalyst bed at a temperature between about 300° C. and about 500° C.
摘要:
The present invention provides a carbonaceous feedstock gasification system with integrated control subsystem. The system generally comprises, in various combinations, a gasification reactor vessel (or converter) having one or more processing zones and one or more plasma heat sources, a solid residue handling subsystem, a gas quality conditioning subsystem, as well as an integrated control subsystem for managing the overall energetics of the conversion of the carbonaceous feedstock to energy, as well as maintaining all aspects of the gasification processes at an optimal set point. The gasification system may also optionally comprise a heat recovery subsystem and/or a product gas regulating subsystem.
摘要:
A method for improving finite element analysis of threaded connections includes selecting at least one thread parameter for a female connection and a corresponding male connection. In two dimensions a thread form is calculated for the female connection and the male connection based on the at least one parameter. In two dimensions a geometry is calculated of the female connection and the male connection based on the thread form. In two dimensions the female connection and the male connection are segmented into predefined areas. A finite element analysis mesh is calculated based on a predetermined number of nodes for each of the predefined areas and a selected number of mesh layers for each predefined area. The two dimensional female connection and male connection are assembled. The two dimensional mesh on the assembled connections is used as input to a finite element analysis of the threaded connection in three dimensions.
摘要:
Methods, systems, and computer program products for generating a search of attachments are described. A search request based on a business template is obtained, the business template comprising a node containing an identity of an entity to which the attachment is attached and an attachment sub-node. A search request based on an attachment template is obtained, the attachment template comprising a root node referring to the attachment sub-node of the business template and a node containing an identity of the attachment. A search is performed based on the business template and the attachment template.
摘要:
Methods for synthesizing an ALP conjugate are provided. The methods may include activating a carboxyl group of the ALP with a carbodiimide, to generate an active ester; and adding the substance to be conjugated such that a synthetic reaction occurs between the active ester and the substance to be conjugated, to generate an ALP conjugate.
摘要:
Methods, systems, and apparatus, including computer program products feature providing a rendering of a three-dimensional assembly of components. An explosion sequence for separating first components of the assembly is determined. The explosion sequence comprises stages in which each stage represents a different spatial relationship between two or more of the first components. A first input is received from an interactive control. A first stage in the explosion sequence is selected based on the first input. The rendering of the assembly is updated, responsive to the first input, to show the first stage of the explosion sequence. A second input is received from the interactive control. A different second stage in the explosion sequence is selected based on the second input. The rendering of the assembly is updated, responsive to the second input, to show the second stage of the explosion sequence.