摘要:
A semiconductor structure and a method for forming the same are provided. The semiconductor structure comprises: a semiconductor substrate; a rare earth oxide layer formed on the semiconductor substrate; a channel region formed on the rare earth oxide layer; and a source region and a drain region formed at both sides of the channel region respectively, in which a relationship between a lattice constant a of the rare earth oxide layer and a lattice constant b of a semiconductor material of the channel region and/or the source region and the drain region is a=(n±c)b, where n is an integer, c is a mismatch ratio of lattice constants, and 0
摘要:
The present invention refers to a droplet-based miniaturized device with on-demand droplet-trapping, -fusion, and -releasing. The device makes use of different electrical fields for directing droplets into microwells and releasing them from the same. In another aspect, the present invention refers to a system comprising such a microfluidic device and a method of operating it.
摘要:
An automatic circle forming apparatus adapted for automatically forming OPP (O-phenylphenol) plastic circles includes a lower equipment cabinet, a first base plate, a transmitting module, an automatic separating module, an automatic tearing film module, a sucking waste mechanism, a displacement module, an automatic forming module and an upper equipment cabinet. The upper equipment cabinet is positioned on the first base plate for installing the transmitting module, the automatic separating module, the automatic tearing film module, the sucking waste mechanism, the displacement module and the automatic forming module therein. The upper equipment cabinet is equipped with a man-machine control interface which connects with and controls the transmitting module, the automatic separating module, the automatic tearing film module, the sucking waste mechanism, the displacement module and the automatic forming module for automatically forming the OPP plastic circles so as to improve operation efficiency and save a human cost.
摘要:
A method of and a system for allocating commodity shelves including obtaining shopping paths of customers, classifying the customers according to a predetermined standard, determining one or more shopping paths adopted by more customers in each kind of customers as frequent shopping path(s) of this kind of customers, calculating a see-buy rate of a commodity for each class of customers. The see-buy rate of a commodity for a class of customers refers to a probability to purchase the commodity for the class of customers. Calculating a shelf where each commodity in a set of commodities is located when the total expected benefits for set of commodities are maximized during a certain period of time. The total expected benefits include a sum of an expected benefit for the each commodity based on the see-buy rate and the frequency shopping path when each commodity is located in its own shelf.
摘要:
A spread spectrum clock signal generator and an accompanying method provide a spread spectrum clock signal of a reduced electromagnetic interference. The spread spectrum clock signal generator includes (a) a state machine, which maintains a current state of the spread spectrum clock signal generator, receives as input value a next state of the spread spectrum clock signal generator and generates a clock phase selection signal based on the current and next states; (b) a random number generator for generating the next state; and (c) a waveform generation circuit for generating a spread spectrum clock signal based on the clock phase selection signal.
摘要:
Improved lithium-sulfur energy storage systems can utilizes LixSy as a component in an electrode of the system. For example, the energy storage system can include a first electrode current collector, a second electrode current collector, and an ion-permeable separator separating the first and second electrode current collectors. A second electrode is arranged between the second electrode current collector and the separator. A first electrode is arranged between the first electrode current collector and the separator and comprises a first condensed-phase fluid comprising LixSy. The energy storage system can be arranged such that the first electrode functions as a positive or a negative electrode.
摘要:
A semiconductor structure and a method for forming the same are provided. The semiconductor structure comprises: a semiconductor substrate; a source region and a drain region defined in the semiconductor substrate respectively, and a trench formed in the source region and/or the drain region, in which a rare earth oxide layer is formed in the trench; a source and/or a drain formed on the rare earth oxide layer; and a channel region formed between the source and the drain. A relationship between a lattice constant a of the rare earth oxide layer and a lattice constant b of a semiconductor material of the source and/or the drain and/or the channel region is a=(n±c)b, where n is an integer, c is a mismatch ratio of lattice constants, and 0
摘要:
The present invention provides a catalyst and the preparation process thereof and a process of epoxidising olefin using the catalyst. The catalyst contains a binder and a titanium silicate, the binder being an amorphous silica, the titanium silicate having a MFI structure, and the crystal grain of the titanium silicate having a hollow structure, with a radial length of 5-300 nm for the cavity portion of the hollow structure, wherein the adsorption capacity of benzene measured for the titanium silicate under the conditions of 25 degrees C., P/P0=0.10 and 1 h of adsorption time is at least 70 mg/g, and there is a hysteresis loop between the adsorption isotherm and the desorption isotherm for nitrogen adsorption by the molecular sieve at a low temperature; wherein based on the total amount of the catalyst, the content of the binder is 3-15 wt %, and the content of the titanium silicate is 85-97 wt %; and the catalyst has a crushing strength value of not less than 60 N/cm measured according to GB3635-1983 standard method. The catalyst according to the present invention has high strength, and shows high catalytic activity in the epoxidation of olefins.
摘要:
A semiconductor structure and a method for forming the same are provided. The semiconductor structure comprises: a semiconductor substrate; an active region formed in the semiconductor substrate, in which the active region comprises: a channel region, and a source region and a drain region formed on both sides of the channel region respectively; and a first isolation trench formed in the semiconductor substrate and on both sides of the active region, in which a first rare earth oxide layer is formed in each first isolation trench to produce a stress in the channel region in a channel length direction.