Abstract:
A portable electronic device includes a housing, a substrate, a radiation conductor and a short circuit conductor. The housing defines an accommodating space and includes a frame that has a body portion and a radiation portion. The substrate is disposed in the accommodating space, is surrounded by the frame, and has a grounding portion. The radiation conductor is disposed in the accommodating space, is electrically coupled to the radiation portion, and includes a feed-in point. The short circuit conductor is electrically coupled between one end of the radiation portion and the grounding portion.
Abstract:
A portable electronic device includes a housing, a substrate, a radiation conductor and a short circuit conductor. The housing defines an accommodating space and includes a frame that has a body portion and a radiation portion. The substrate is disposed in the accommodating space, is surrounded by the frame, and has a grounding portion. The radiation conductor is disposed in the accommodating space, is electrically coupled to the radiation portion, and includes a feed-in point. The short circuit conductor is electrically coupled between one end of the radiation portion and the grounding portion.
Abstract:
A heat sink is disclosed. A plurality of fins is radially and uniformly connected to a central base. Each fin comprises a plurality of protrusions. The protrusions are uniformly formed on each fin around the circumference of the central base.
Abstract:
A light emitting diode (LED) base with radiating fins is disclosed. The LED base includes a base plate which having a riveting structure on its bottom side, a conducting circuit, an LED unit, and radiating fins which are directly riveted to stand at the riveting structure on the bottom side of the base plate. The base plate and the riveted radiating fins are directly used as the heat dissipation module of the LED base to reduce the thermal resistance of the LED base during the heat dissipation process.
Abstract:
A connecting structure for connecting a pipe-shaped element including a base and at least a lock element is provided. The base includes a first clamper, a second clamper and a spacer. The first clamper and the second clamper are connected together on one side while a gap is maintained between the first clamper and the second clamper on the other side to form a groove that connects with the spacer. One end of the pipe-shaped element is disposed inside the spacer. The first clamper has at least a lock hole and the second clamper has at least a corresponding second lock hole. The pipe-shaped element disposed inside the spacer is tightly assembled to the base by the lock element through the first lock hole and the second lock hole. Furthermore, a connecting method for connecting the pipe-shaped element is also provided.
Abstract:
A structure for playing MIDI messages including a main-control element, a buffer memory, a MIDI synthesizer, and a pre-processor is provided. The main-control element receives tone colors and the MIDI messages, and loads at least part of the tone colors to the buffer memory. The main-control element transmits the MIDI messages to the pre-processor. The pre-processor coupled to the main-control element and the buffer memory, is used for analyzing the MIDI messages. In addition, the pre-processor dynamically determines at least part of the tone colors to be saved in the buffer memory based on the capacity of the buffer memory.
Abstract:
The present invention relates to a composition for preserving plants, which comprises 5 carbon alcohol, at least one alcohol selected from the group consisting of 3 carbon alcohol and 4 carbon alcohol, a thiourea and at least one acid selected from the group consisting of tartaric acid and boric acid. The composition is used to preserve colors, patterns and DNA of plants. The composition can also be used to change colors of flowers. The present invention also relates to a method for preserving plants, which comprises soaking the plants in the composition of the present invention.
Abstract:
An anti-seismic device is adapted to absorb the vibration energy of a structure, and comprises a plurality of vibration-reducing units, each of which includes a mass, a hydraulic cylinder, and a resilient element. The hydraulic cylinder has an outer end that is connected fixedly to the structure, and an inner end that is connected fixedly to the mass. The resilient element has an outer end that is connected to the structure, and an inner end that is connected to the mass. When the structure is subjected to vibration, the masses can move reciprocally relative to the structure at different vibration frequencies. The hydraulic cylinders are arranged substantially in parallel.