摘要:
This invention belongs to the field of biochemical engineering and relates to a method of cyclic utilization of water during separation of succinic acid made by fermentation. This invention uses water from separation process for aerobic growth of E.coli AFP111 and production of succinic acid by anaerobic fermentation, obtaining final succinic acid concentration of 55 g/L and yield of 91.6%. Compared with results of fermentation using culture medium prepared from tap water, succinic acid concentration and productivity increased by 8.5% and 8.46%, respectively. An outstanding advantage of this invention is recovery and utilization of evaporated water during separation of succinic acid, realizing cyclic use of water during industrial production of succinic acid, which is an environment-friendly process. Also, as evaporated water generated during separation of succinic acid contains small amount of organic acids such as acetic acid and formic acid, if this water is used for aerobic growth of thalli, the small amount of organic acids contained therein can be used as gluconeogenesis carbon source, improving activity of some key enzymes in cell and favoring succinic acid production by anaerobic fermentation of thalli.
摘要:
A damping apparatus that supports and dampens a stage apparatus that positions and drives a stage to a target position is provided herein. The damping apparatus including a support plate part, a support force generating means, and a first controlling means. The support plate part supports the stage apparatus. The support force generating means exerts a damping action by applying a support force to the support plate part in the vertical directions. The first controlling means uses the acceleration of the stage, which is derived from a target track, to the target position, to control the support force generated by the support force generating means so as to compensate for forces that both occur as a result of the acceleration of the stage and cause the support plate part to tilt. The present invention controls vibration and the tilt of a base plate with high precision.
摘要:
A semiconductor structure includes of a plurality of semiconductor fins overlying an insulator layer, a gate dielectric overlying a portion of said semiconductor fin, and a gate electrode overlying the gate dielectric. Each of the semiconductor fins has a top surface, a first sidewall surface, and a second sidewall surface. Dopant ions are implanted at a first angle (e.g., greater than about 7°) with respect to the normal of the top surface of the semiconductor fin to dope the first sidewall surface and the top surface. Further dopant ions are implanted with respect to the normal of the top surface of the semiconductor fin to dope the second sidewall surface and the top surface.
摘要:
This invention is directed to compounds of formula (I): where r, q, R, R2, R3, R4, R5a, R5b, R5c, R6a, R6b, R6c, R7, R8, and R9 are described herein, as single stereoisomers or as mixtures of stereoisomers, or pharmaceutically acceptable salts, solvates, clathrates, polymorphs, ammonium ions, N-oxides or prodrugs thereof; which are leukotriene A4 hydrolase inhibitors and therefore useful in treating inflammatory disorders. Pharmaceutical compositions comprising the compounds of the invention and methods of preparing the compounds of the invention are also disclosed.
摘要:
The present invention discloses a method of improving the fermentation yield of polyunsaturated fatty acids, in which Schizochytrium limacinum is used as production strain to produce polyunsaturated fatty acids (PUFA), and glycine betaine or trehalose is added to the fermentation medium. In the present invention, after Schizochytrium limacinum fermentation system is treated with exogenous glycine betaine, the yield of PUFA produced by fermentation with Schizochytrium limacinum can be greatly improved. The present invention significantly improves the yield of PUFA produced by microorganism, reduces the cost without harming the environment, and saves manpower and material resources by simple and effective regulation of fermentation, and thus the method is simple, convenient and cost-effective.
摘要:
An integrated circuit device and method for manufacturing the same are disclosed. An exemplary device includes a semiconductor substrate having a substrate surface; a trench isolation structure disposed in the semiconductor substrate, the trench isolation structure having a trench isolation structure surface that is substantially planar to the substrate surface; and a gate feature disposed over the semiconductor substrate, wherein the gate feature includes a portion that extends from the substrate surface to a depth in the trench isolation structure, the portion being defined by a trench isolation structure sidewall and a semiconductor substrate sidewall, such that the portion tapers from a first width at the substrate surface to a second width at the depth, the first width being greater than the second width.
摘要:
A backlight module and a liquid crystal display (LCD) device using the same are provided. The backlight module includes a light-guide plate and a light source module. The light-guide plate has a first side surface and a second side surface, wherein the second side surface is tangent with the first side surface. The light source module is disposed beside the first side surface and the second side surface of the light-guide plate, and a plurality of first light emitting diode (LED) units and a plurality of second LED units are respectively disposed at portions of the light source module that face the first side surface and the second side surface of the light-guide plate. Thereby, the backlight module has the advantages of high image contrast and low power consumption offered by a direct type backlight module and maintains the thickness of a side-edge backlight module.
摘要:
An integrated circuit structure includes a semiconductor chip, a metal pad at a major surface of the semiconductor chip, and an under-bump metallurgy (UBM) over and contacting the metal pad. A metal bump is formed over and electrically connected to the UBM. A dummy pattern is formed at a same level, and formed of a same metallic material, as the metal pad.
摘要:
A fabrication method for dicing semiconductor wafers using laser cutting techniques, which can effectively prevent the devices on semiconductor die units from the phenomenon of etching undercut caused by the sequential steps after laser cutting, comprises following steps: covering the wafer surface with a protection layer; dicing the wafer by laser and separating the die units from each other; removing the laser cutting residues on the devices on the die units by wet etching; removing the protection layer and cleaning the devices on the die units. The selection of materials for the protection layer must consider the following factors: where (1) the materials for the protection layer must have relatively good properties for adhering and covering on the wafer; (2) and the materials for the protection layer must be corrosion-resistant to the acidic or basic solution for etching residues.
摘要:
A semiconductor structure comprising an SRAM/inverter cell and a method for forming the same are provided, wherein the SRAM/inverter cell has an improved write margin. The SRAM/inverter cell includes a pull-up PMOS device comprising a gate dielectric over the semiconductor substrate, a gate electrode on the gate dielectric wherein the gate electrode comprises a p-type impurity and an n-type impurity, and a stressor formed in a source/drain region. The device drive current of the pull-up PMOS device is reduced due to the counter-doping of the gate electrode.