摘要:
A high frequency vibration spindle system (100, 200) with non-contact power transmission and a method for manufacturing a restraining part (50, 240) used therein are disclosed. The high frequency vibration spindle system (100, 200) comprises: a spindle (10, 210); a toolholder (20, 220); an electric power transmission device (40, 230) including a first induction module (60, 250) and a second induction module (70, 260), wherein the second induction module (70, 260) is disposed at the spindle (10, 210) or the toolholder (20, 220), and the second induction module (70, 260) is adapted to receive an electric power from the first induction module (60, 250) in a non-contact electromagnetic induction manner; a transducer (30) adapted to be controlled to vibrate the tool (22) and being disposed at the toolholder (20, 220) and electrically connected with the second induction module (70, 260) to receive the electric power; and a restraining part (50, 240) located between the first induction module (60, 250) and the second induction module (70, 260). By the design of the restraining part (50, 240), the structural strength and stability of the second induction module (70, 260) can be improved, and the maximum rotational speed of the high frequency vibration spindle system (100, 200) can be increased.
摘要:
The present invention discloses use of butylidenephthalide (Bdph), a method of using the same, and a method for preparing a pharmaceutical composition containing the same. Because Bdph has the capability of promoting the hair growth and reducing the β-amyloid protein (Aβ) level in nerve cells, the efficacy of improving the health and appearance of a subject can be achieved by administrating an effective amount of Bdph to the subject. Specifically, the Bdph has the efficacy of preventing or treating neurodegenerative diseases such as Alzheimer's disease caused by excessive build up of Aβ in the cells, and as an active ingredient in a topical composition, the Bdph is effective in promoting the hair growth at the site where the Bdph is administered. Furthermore, the method for preparing a pharmaceutical composition containing Bdph comprises preparing the pharmaceutical composition through an organic synthesis reaction, wherein the Bdph is coated with a polymeric material such as F127 by covalent bonding of the polymeric material with the Bdph, thereby achieving the effect of reducing the cytotoxicity of the pharmaceutical composition for an organism.
摘要:
A photosensitive poiphyrin-based dye is adapted to be used in a photoelectric converting device such as a dye-sensitized solar cell. The photosensitive porphyrin-based dye has a poiphyrin center, at least one electron donor unit, at least one electron acceptor unit and an optional blocker unit wherein the units are directly connected to the poiphyrin center or connected to the poiphyrin center via ethynyl-bridges.
摘要:
Disclosed herein are photosensitizer particle contrast agents suitable for medical imaging and/or photodynamic therapy. The photosensitizer particle contrast agent has a shell and a core encased by the shell. The shell consists essentially of multiple photosensitizer conjugates. Each photosensitizer conjugate consists of a photosensitizer and at least one biodegradable polymer covalently bound to the photosensitizer. According to certain examples, the core has an echogenic contrast-enhancing material loaded therein. In alternative examples, the photosensitizer of at least one of the multiple photosensitizer conjugates has a magnetic contrast-enhancing agent, e.g., a paramagnetic ion, chelated thereto. Also disclosed herein are methods for medical imaging which use imaging compositions containing the photosensitizer particle contrast agents taught in the present disclosure.
摘要:
A series of novel phosphorus-containing compounds having the following formula are disclosed:
wherein R 1 -R 12 , A, B, D, X, and Y are as defined in the specification. A process for the preparation of the compound of formula (1), a curing agent, and a flame resistant epoxy resin and a preparation process thereof are also provided.