摘要:
A method for evaluating the condition of a battery comprises coupling a first power transistor as or as part of a first external load in series with the battery, coupling a second power transistor as or as part of a second external load in series with the battery, and conducting each power transistor to draw a transient large current from the battery while sampling the voltage across the battery and voltage across the load, from which the internal resistance of the battery can be determined. The internal resistance of the battery can then be compared with a predetermined nominal value to issue a warning if the battery is weak. The invention enables, for example, a driver to correctly know the actual condition of an automobile battery in substantially real time while consuming a minimum amount of power.
摘要:
Disclosed are isolated polynucleotides encoding an omega-3 desaturase and a delta-12 desaturase, the enzymes encoded by the isolated polynucleotides, vectors containing the isolated polynucleotides, transgenic hosts that contain the isolated polynucleotides that express the enzymes encoded thereby, methods for producing the desaturase enzymes, and method of using the enzymes to make polyunsaturated fatty acids. The isolated polynucleotides are derived from a fungus, Saprolegnia diclina (ATCC 56851). In particular, omega-3-desaturase may be utilized, for example, in the conversion of arachidonic acid (AA) to eicosapentaenoic acid (EPA). Delta-12 desaturase may be used, for example, in the conversion of oleic acid (OA) to linoleic (LA). EPA or polyunsaturated fatty acids produced therefrom may be added to pharmaceutical compositions, nutritional compositions, animal feeds, as well as other products such as cosmetics.
摘要:
The method for manufacturing a supercapacitor according to the present invention includes the following steps. First, stack a bottom electrode plate and a top electrode plate in parallel. Then, install a first rubber frame and a second rubber frame face-to-face on the bottom and the top electrode plates. The first rubber frame is adapted with a first opening, while the second rubber frame is adapted with a second opening. Next, install an isolation membrane in a space surrounded by the first and the second rubber frames. Afterwards, bind the first and the second rubber frames. Then, produce vacuum in the space. Next, place the bottom and the top electrode plates into an electrolyte to make the electrolyte flow into the space. Finally, use a first resin to seal the first and the second openings. Thereby, the short-circuit phenomenon caused by long-term usage of the supercapacitor can be prevented. In addition, the structural strength of the supercapacitor can be reinforced to avoid electrolyte-leakage phenomenon.
摘要:
A solid capacitor and the manufacturing method thereof are disclosed. The solid capacitor consists of a dielectric layer and two electrodes. A plurality of holes formed by an opening process is disposed on surface of the dielectric layer. The two electrodes connect with the dielectric layer by the holes. By means of a plurality of high temperature volatile matters, the plurality of holes is formed on surface of the dielectric layer during sintered process. The holes are connected with the outside so as to increase surface area of the dielectric layer and further the capacity is increased. And the solid capacitor stores charge by physical means. Moreover, the solid capacitor can be stacked repeatedly to become a multilayer capacitor.
摘要:
A solid capacitor and the manufacturing method thereof are disclosed. The solid capacitor consists of a dielectric layer and two electrodes. A plurality of holes formed by an opening process is disposed on surface of the dielectric layer. The two electrodes connect with the dielectric layer by the holes. By means of a plurality of high temperature volatile matters, the plurality of holes is formed on surface of the dielectric layer during sintered process. The holes are connected with the outside so as to increase surface area of the dielectric layer and further the capacity is increased. And the solid capacitor stores charge by physical means. Moreover, the solid capacitor can be stacked repeatedly to become a multilayer capacitor.
摘要:
A spiral inductor with high quality factor for an integrated circuit (IC) is disclosed, in which the metal layers arranged under a spiral inductor layer are parallel-connected to each other by the use of interconnects so as to increase the thickness of the metal layer and thus effectively reduce the parasitic resistance of the spiral inductor. In a preferred aspect, the parasitic resistance of the spiral inductor is reduced by increasing the interconnects, used for connecting the spiral inductor layer and the metal layer arranged underneath the same. In another preferred aspect, an interconnect is formed under the spiral inductor layer while enabling the same to be disconnected from the metal layer directly under the spiral inductor layer, by which the quality factor of the spiral inductor is increased since the substantial sectional area of the spiral inductor layer is increased and thus the parasitic resistance of the spiral inductor is decreased.
摘要:
The method comprises coupling an external load having a predetermined resistance directly in series with the battery, conducting a power transistor to supply a transient large current to the battery for sampling voltage of the battery in a set very short period of time, and determining the internal resistance of the battery. The internal resistance of the battery can then be compared with a predetermined warning value of internal resistance of the battery so as to determine whether the former is equal to or larger than the warning value, and displaying a warning on a display if the determination is affirmative. The invention enables a driver to correctly know the condition of the battery in substantially real time while consuming a minimum amount of current.
摘要:
The subject invention relates to the identification of genes involved in the desaturation of polyunsaturated fatty acids at carbon 4 (i.e., “Δ4-desaturase”). In particular, Δ4-desaturase may be utilized, for example, in the conversion of adrenic acid to ω6-docosapentaenoic acid and in the conversion of ω3-docosapentaenoic acid to docosahexaenoic acid. The polyunsaturated fatty acids produced by use of the enzyme may be added to pharmaceutical compositions, nutritional compositions, animal feeds, as well as other products such as cosmetics.
摘要:
A method of forming a heat spreader ball grid array package, and the resultant heat spreader ball grid array package, comprising the following steps. A semiconductor chip affixed to a ball grid substrate is provided. The semiconductor chip over the ball grid substrate is encased with a molding compound. A heat spreader is mounted over the ball grid substrate and spaced apart from the molding compound to form a gap. Thermal grease is placed into the gap, at least between the heat spreader and the molding compound, to form the heat spreader ball grid array package. It is also possible to place thermal grease over the molding compound and then mounting the heat spreader over the ball grid substrate.
摘要:
The subject invention relates to the identification of genes involved in the desaturation of polyunsaturated fatty acids at carbon 4 (i.e., “Δ4-desaturase”). In particular, Δ4-desaturase may be utilized, for example, in the conversion of adrenic acid to ω6-docosapentaenoic acid and in the conversion of ω3-docosapentaenoic acid to docosahexaenoic acid. The polyunsaturated fatty acids produced by use of the enzyme may be added to pharmaceutical compositions, nutritional compositions, animal feeds, as well as other products such as cosmetics.