摘要:
A substantially pure phase LaTaO4 photocatalyst is prepared by grinding precursors with mixture of at least two different sizes of high-density yttrium-stabilized zirconia balls to a very fine particle size and calcining the ground precursors. The LaTaO4 photocatalyst prepared by this method is useful in photolysis of water.
摘要翻译:通过将具有至少两种不同尺寸的高密度钇稳定的氧化锆球的混合物的前体研磨成非常细的粒度并煅烧研磨前体来制备基本上纯的LaTaO 4 O 3光催化剂。 通过该方法制备的LaTaO 4光催化剂可用于水的光解。
摘要:
A particulate material is ground more efficiently using a mixture of at least two different sizes of yttrium-stabilized zirconia balls. The method facilitates preparation of photocatalysts with high activity.
摘要:
A composite photocatalyst includes a semiconducting core and a nanoscale particle disposed on a surface of the semiconducting core, wherein the nanoscale particle is an electron carrier, and wherein the photocatalyst is sensitive to visible light irradiation.
摘要:
In an air conditioner, in a general cooling mode, an indoor air is cooled by heat exchange with a main evaporator of a first refrigerant, while in a rapid cooling mode, an indoor air is cooled by heat exchange with an intermediate heat exchanger consisting of a main evaporator of the first refrigerant and a rapid cooling condenser of a second refrigerant and then re-cooled in a rapid cooling evaporator of the second refrigerant, thereby performing a cool and pleasant cooling operation immediately whenever necessary.
摘要:
Disclosed is a heat exchanger including a plurality of tubes through which refrigerants flow, the tubes being spaced away from each other, and a plurality of fins spaced away from each other at a predetermined distance. Each of the fins has fin collars through which the tubes are perpendicularly inserted, seat portions each concentrically formed around outer circumferences of the fin collars and provided with laterally-opened front and rear portions, more than two peak portions, and more than two valley portions, the peak and valley portions being alternately disposed to provide airflow variation.
摘要:
Disclosed is an air conditioner that can operate in a general cooling mode in which indoor air is cooled by heat exchange with a first refrigerant in a main evaporator, or alternatively in a fast cooling mode in which the indoor air is primarily cooled by heat exchange in a midway heat exchanger which includes the main evaporator for the first refrigerant and a fast cooling condenser for a second refrigerant, and then re-cooled in a fast cooling evaporator for the second refrigerant. Accordingly, fast and agreeable air cooling can be achieved.
摘要:
A vertical organic thin film transistor is provided along with an organic light-emitting transistor, which is characterized in that an active layer is formed of a p-type organic semiconductor compound having a dielectric constant of 3.5 or more, and work function values of an anode and a cathode are different from each other. The vertical organic thin film transistor is advantageous because it exhibits excellent current-voltage properties due to a short channel length, and has simple fabrication processes. Also, in the vertical organic thin film transistor, current properties in response to the gate voltage are of an enhancement type. Therefore, the vertical organic thin film transistor may be fabricated into the organic light-emitting transistor through a simple process.
摘要:
A method for assigning a channel in multi-FA CDMA mobile communication system according to the received power prevents communication quality of a FA from being inferior to that of the others by managing the interference level of the FA. The method comprises the steps of: comparing a first threshold value with received power when the base station receives a new call request; assigning a traffic channel in a first FA of the request, if the received power is less than the first threshold value, and searching a second FA of which received power is least, if not; comparing a second threshold value with the received power of the second FA; and assigning a traffic channel in the second FA if the received power is less than the second threshold value, and rejecting the request, if not.
摘要:
A flexible PCB is provided with surplus bends so that it can be readily bent according to the repetitive movement thereof, whereby wires formed in the flexible PCB can be prevented from being severed by the bending fatigue accumulated due to the movement. The flexible PCB for use in electronic equipment acts to transmit electrical signals between two rigid PCBs and acts as a structural bridge therebetween, the two rigid PCBs being spaced away from each other and being able to relatively move. The flexible PCB includes: a plurality of wires, each functioning as a passageway for electrical signals; and a soft material-based substrate body in which the wires are formed; and being provided with surplus bends at predetermined positions so as to allow the flexible PCB to resiliently move according to the relative movement of the rigid PCBs.
摘要:
A single button six-way sunroof switch includes a case; a knob base which has a coupling hole, hooks, and a hinge hole; a knob with coupling grooves, wherein the hooks of the knob base are engaged with the coupling grooves; a light emitting rod having a latching jaw, which is latched with the upper end of the knob base around the coupling hole; a lever integrally formed with the light emitting rod; a slider which has a panel with a through-hole, support legs extended from corners of the panel, and a hinge pin; a contact having a body part coupled to the lever, which passes through the through-hole of the slider, and contact-point legs extended from the body part in four directions; and a Printed Circuit Board having tact switches to be pushed by the lever and a plurality of contact points contacted by the contact-point legs.