摘要:
The present invention provides Danshensu derivatives containing a moiety of Chuanxiongqin (tetramethylpyrazine), and pharmaceutical compositions containing the Danshensu derivatives or their salts and pharmaceutically acceptable carriers. The invention also provides methods for preparing the Danshensu derivatives or their salts, and uses of the compositions in manufacture of medicaments for prevention and treatment of diseases or disorders including cardiovascular and cerebrovascular diseases and their complications.
摘要:
Pyrazine derivatives of formula (I) and pharmaceutically acceptable salts thereof are disclosed, wherein the designation of R 1 , R 2 , R 3 and R 4 are provided herein. Syntheses for preparation of such compounds are disclosed. Methods of use of these compounds and pharmaceutical compositions containing them for treatment and/or prevention of diseases and for manufacture of medicaments are disclosed. These compounds and pharmaceutical compositions have antioxidative and thrombolytic effects, and thus can be used for the treatment and/or prevention of cerebral stroke caused by ischemia, and used for manufacture of medicaments for the treatment and/or prevention of nervous system diseases caused by excessive amount of radicals and/or thrombosis, infectious diseases, metabolic system diseases, cardiovascular and cerebrovascular diseases, and age-related degenerative diseases.
摘要:
The present invention provides novel nitrones, their preparation and use. The novel compounds have the following formula: I The compounds of the present invention have strong antioxidative activity, and are thrombolytic. These compounds can be used to treat and/or prevent diseases caused by overproduction of free radicals and/or formation of thrombus.
摘要:
A fiber-optic sensing apparatus, system, and method for characterizing at least one metal ion in a solution. The sensing apparatus (100) includes a fiber-optic sensor (50) and a controller (80). The sensor (50) includes an optical fiber with tilted grating in its core (10), and includes a conductive and surface plasmon resonance (SPR) -active coating assembly (30) that allows the sensor (50) to also serve as an electrochemical working electrode. The controller (80) is electrically connected with the sensor (50), configured to provide an adjustable potential such that when the coating assembly (30) is in contact with the solution (S), redox reactions of each of the at least one metal ion (H1) occur on an outer surface thereof, resulting in a detectable change of the surface plasmon waves generated in the fiber-optic sensor (50). Based on the change thus detected, identities and/or concentration of the at least one metal ion (H1) in the solution (S) can be determined with high accuracy and sensitivity.
摘要:
The present invention provides novel chiral bisamino-ether compounds, and method of preparation and use thereof. The chiral bisamino-ether compounds have the structure of formula (I). The method of preparation includes: using chiral aminomethanol compounds as starting materials to react with halogenated aryl compounds in the presence of a base to give a variety of chiral bisamino-ether compounds. The novel chiral bisamino-ether compounds can be used for asymmetric fluorocyclization of unsaturated heterocyclic compounds with excellent enantioselectivity and great potentials for industrial applications.
摘要:
A method and system for in operando, in situ, and real-time monitoring the state of an electrochemical device, e.g. battery, is provided, which is by means of an optical fiber probe inside the electrochemical device. The method includes: shedding an input light into the optical fiber probe and detecting an output light transmitted therefrom; and determining state of health of the electrochemical device based on the output light. The determination step can be based on a change of the refractive index or of the cladding mode or the surface plasmon resonance, all derived from the output light, in the instant state compared to a prior state. The method can simultaneously detect other parameters including state of charge, temperature, pressure, strain, displacement, vibration, or gas release inside the electrochemical device. With a core mode for correction, the determination of these parameters can also realize a high accuracy.
摘要:
Provided are a new kind of tumor pericytes, an isolation method thereof and use thereof, which belongs to the field of biotechnology. The method comprises stripping tumor vessels from fresh solid tumor tissue samples, cutting the tumor vessels into annular fragments, placing the annular fragments of the tumor vessels in a pericyte culture medium pre-coated with matrigel for conditioned culture, and recycling tumor pericytes from the matrigel. The TPCs highly expressed positive pericytes molecular markers including FAPα, NG2, PDGFRβ and CD146, but not expressed negative pericytes molecular markers including CD31 and MYH11.
摘要:
Compounds useful for treating or preventing diabetes and related conditions, and for preventing, inhibiting or reversing amylin-amyloid fibril formation, preventing islets of Langerhans (Beta)-cell death, preventing or reversing the transition from soluble human amylin to insoluble human amylin, preventing and inhibiting or reversing cytotoxic amylin fibril formation. The invention relates to compounds of Formula (I) and compounds of Formula (II): (Formulae (I) and (II)).
摘要:
An electrode material, its manufacturing method, and its use as a cathode material in batteries are provided. The electrode material comprises a plurality of nanoparticles, each having a diameter of approximately 100-400 nm and comprising a core and a shell encapsulating the core. The shell comprises carbon and nitrogen, respectively having a mass fraction of approximately 70-90%and approximately 5-20%relative to a total mass of the shell. The core comprises sulfur, having a mass fraction of approximately 40-97%relative to a total mass of the core. The core has a mass fraction of approximately 50-90%relative to a total mass of each nanoparticle. The electrode material can be used in a cathode of a Li-S battery, which has a good energy storage capacity, a high electrochemical stability, and a low capacity decay.
摘要:
A method for continuous detection of multi-channel gas samples, includes following steps:a plurality of gas samples are sequentially entered into the sampling path of a detection device (40) from a multi-channel gas path automatic switching unit (30), and the interval gas delays the diffusion of each gas sample and makes the samples enter the detection device (40)for analysis without cross interference as much as possible, so as to achieve continuous detection of multiple real-time online or offline gas samples to effectively improve sample throughput and detection efficiency.