摘要:
Provided are an exhaust gas treatment catalyst capable of reducing ammonia leakage rate while keeping a sufficient NOx removal efficiency, said catalyst comprising a coating layer and a catalyst base material, wherein said coating layer has a decreased thickness relative to that of a catalyst base material; and an exhaust gas treatment system using the same. In the exhaust gas treatment catalyst for catalytically removing nitrogen oxides from an exhaust gas by using ammonia as a reducing agent and simultaneously decomposing and removing unreacted ammonia, a coating layer comprising platinum supported on titania is formed on a surface of a porous catalyst base material comprising titania and at least one compound selected from oxides of vanadium (V), oxides of tungsten (W) and oxides of molybdenum (Mo).
摘要:
Provided are an exhaust gas treatment catalyst capable of reducing ammonia leakage rate while keeping a sufficient NOx removal efficiency, said catalyst comprising a coating layer and a catalyst base material, wherein said coating layer has a decreased thickness relative to that of a catalyst base material; and an exhaust gas treatment system using the same. In the exhaust gas treatment catalyst for catalytically removing nitrogen oxides from an exhaust gas by using ammonia as a reducing agent and simultaneously decomposing and removing unreacted ammonia, a coating layer comprising platinum supported on titania is formed on a surface of a porous catalyst base material comprising titania and at least one compound selected from oxides of vanadium (V), oxides of tungsten (W) and oxides of molybdenum (Mo).
摘要:
A catalyst for nitrogen oxide removal, which catalytically reduces nitrogen oxides in an exhaust gas in the presence of ammonia, comprises: a first component comprising an oxide of titanium, an oxide of tungsten, and an oxide of vanadium; and a second component comprising an oxide of manganese, or an oxide of manganese and an oxide of copper.
摘要:
A catalyst for nitrogen oxide removal, which catalytically reduces nitrogen oxides in an exhaust gas in the presence of ammonia, comprises: a first component comprising an oxide of titanium, an oxide of tungsten, and an oxide of vanadium; and a second component comprising an oxide of manganese, or an oxide of manganese and an oxide of copper.
摘要:
Disclosed are (1) a method for the regeneration of a denitration catalyst wherein, in order to regenerate a denitration catalyst having reduced denitration power, the catalyst is cleaned with a cleaning fluid having a hydrofluoric acid concentration of 0.3 to 3% by weight and maintained at a temperature of 20 to 80.degree. C., and (2) a method for the regeneration of a denitration catalyst which comprises the steps of cleaning a denitration catalyst having reduced denitration power under the conditions described in (1) above, drying the cleaned catalyst, and impregnating the catalyst with a catalytically active component so as to support it on the catalyst.
摘要:
The present invention provides a compound represented by the following formula (I) or a physiologically acceptable salt thereof, and use thereof for the prophylaxis or treatment of TGF-β-related diseases: wherein Y is a hydrogen atom and the like; R2 is and the like; R3 is —NR8—R9— and the like; R4, R5, R6 and R7 are the same or different and each is a hydrogen atom and the like; and X is and the like.
摘要:
The sound field reproducing apparatus includes: a signal obtaining unit which obtains input audio signals of plural channels; an effect adding unit which gives an effect on an output to a sound field; and an effect amount control unit which controls an amount of the effect based on a characteristic of the input audio signal. The sound field reproducing apparatus receives input audio signals of plural channels from a medium such as a DVD, and gives a sound effect to them to output. The amount of the effect given to the input audio signal is controlled based on the characteristic of the input audio signal, especially the cross correlation of the reverberation component between the channels.
摘要:
A characteristics measurement device is applicable to various kinds of measurement devices for measuring characteristics subjected to a measurement in a certain environment. The characteristics measurement device measures a noise level in the environment, and determines the noise state based on the obtained noise level. Then, the characteristics measurement device determines the number of times of measurement of the characteristics based on the noise state, and executes synchronized addition of the characteristics obtained by the plural measurements to output the characteristics. Thus, when the noise state in the environment of the measurement execution is preferable, the measurement is completed in the smallest number of times of measurement. Additionally, when the noise state of the environment is not preferable, the plural measurements are executed in order to obtain the desired noise state (e.g., S/N), and the results are synchronized and added. Since the influence of the noise is reduced by repeating the synchronized addition, the measurement result with high accuracy can be obtained. In the environment of the measurement execution, an unexpected noise other than an ordinary noise may occur. If the unexpected noise occurs, measurement accuracy largely becomes low. Then, when a correlation of the plural measurement results is low, it is assumed that the unexpected noise occurs. By increasing the number of times of measurement, the influence of the unexpected noise can be removed.
摘要:
In the NH3 injection rate control method for an NOx removal apparatus, operating area of the apparatus is divided into first area in which molar ratio of NH3 injection rate with respect to NOx flow rate at an inlet of the apparatus is smaller than molar ratio at minimum point where NOx concentration assumes minimum value and second area in which the molar ratio is equal to or larger than the minimum point molar ratio, and virtual NOx concentration with respect to the molar ratio is set according to virtual characteristic line which varies monotonically to stride across desired operating point without rising with increase of the molar ratio from the first area to the second area. Moreover, feedback control is implemented for adjusting the NH3 injection rate with respect to the NOx flow rate in direction that the virtual NOx concentration is brought close to the desired NOx concentration.
摘要:
A system and method for providing a steering control for an autonomous vehicle are disclosed in which a plurality of measuring points for determining distances therefrom to respective points on an imaged white line are set, a membership function for each measuring point is set which gives a reliability .mu.l.sub.i (j) to the other measuring points so that an effective range to the input values of the respective measuring points is expanded, and a control equation sl.sub.i (or sr.sub.i) at each measuring point toward which the input values to the other measuring points are reflected.
摘要翻译:公开了一种用于提供用于自主车辆的转向控制的系统和方法,其中,将用于确定距离的多个测量点设置在成像的白线上的各个点上,设置每个测量点的隶属函数,其给出可靠性 mu li(j)到其他测量点,使得对各个测量点的输入值的有效范围被扩大,并且在每个测量点处的控制等式sli(或sri)向其它测量点的输入值 被反映。