Chinese Academy of Sciences

Schlumberger Technology Corporation

Chinese Academy of Meteorological Sciences

Ruixia Liu

Suojiang Zhang

Ruirui Zhang

Yi Wang

Yu Wang

Le Wang

Bin He

Jun Hou

Fei Dai

Shengjun Zhang

Junping Zhang

Weihao Gu

Wenyue Cai

Haiduo Sun

Shengxin Chen

Duanyang Liu

Xiangde Xu

Hongguo Tang

Runze Zhao

The present disclosure provides a method, system and apparatus for correcting satellite observation data. By acquiring microwave radiometer (MWR) movement observation data of a radiosonde observation limited sounding area, correcting the MWR movement observation data based on corresponding radiosonde observation data, and correcting satellite observation data based on the radiosonde observation data and corrected MWR movement observation data, the present disclosure corrects the satellite observation data of the radiosonde observation limited detection area, reduces an error of the satellite observation data, and makes the satellite observation data more accurate. The present disclosure realizes networked observation on vertical sounding of the radiosonde observation limited area, changes a limited observation condition of radiosonde observation only available at 08:00 and 20:00 every day in the original service system, and acquires complete high spatio-temporal resolution vertical sounding data of the radiosonde observation limited area in daytime.

Method, system and apparatus for correcting satellite observation data

Provided are an oxovanadium phosphate catalyst, and a preparation method and an application therefor. The method includes: 1) mixing and reacting a vanadium source, a choline chloride-organic carboxylic acid eutectic solvent, and alcohol; 2) mixing the obtained reaction product with a phosphorus source, raising the temperature to a temperature higher than the melting point of the eutectic solvent, and continuing the reaction to obtain an oxovanadium phosphate precursor; and 3) calcining to obtain the oxovanadium phosphate catalyst. The alcohol is: benzyl alcohol or a mixture of C-Cmonohydric alcohol and benzyl alcohol. The present method uses a green and inexpensive eutectic solvent to strengthen the preparation of oxovanadium phosphate catalyst, avoids the disadvantages of the prior art, and overcoming the problems of low yield and poor selectivity when used in a reaction to prepare maleic anhydride by catalytic n-butane selective oxidisation.

Oxovanadium phosphate catalyst, and preparation method and application therefor

The present invention relates to the technical field of chemical engineering and catalysis. Provided are an application of an ionic liquid in propylene glycol ether synthesis and a method for synthesizing a propylene glycol ether. The ionic liquid is a methyl carbonate ionic liquid, and is used as a catalyst for catalyzing propylene glycol ether synthesis. The method for synthesizing the propylene glycol ether comprises the following steps: placing propylene oxide and an alcohol within a reactor to contact a catalyst, and heating the mixture in an enclosed environment to 50-200&#xb0; C. to obtain the propylene glycol ether, wherein the catalyst is a methyl carbonate ionic liquid. The method for synthesizing propylene glycol ether provided in the present invention is a green synthesis technique, and does not require special production equipment. The method has simple and easily controllable processes, and can be used in industrial production and applications.

Application of ionic liquid in propylene glycol ether synthesis and method for synthesizing propylene glycol ether

The present invention is a method of creating an image in a wellbore that includes receiving input data from a wellbore at one or more measured depths. The input data including geometry of wellbore, tool setting, survey data, trajectory of wellbore (button angle) etc. One dimensional arrays are constructed for a measured depth in one direction by a) calculating maximum positive amplitudes from input data and b) obtaining a sinusoidal line at a measured depth from the maximum positive amplitudes and assigning the sinusoidal line physical property. The calculations of a) and b) are repeated to obtain multiple arrays. A synthetic image is constructing from the multiple arrays and a synthetic image is outputted.

Image generation of a wellbore

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Beijing, China

Ruixia Liu