Drilling waste mud is one of the main sources of pollution in the oil and gas industry. Due to engineering requirements, oil drilling mud is mixed with oil, water, organic clay and other materials; in the past two years, the drilling team has oil-based mud, water-based mud and composite mud. The use
[ Instrument R&D ] On June 9th, a team of physicists at Brown University developed a new compact ultra-sensitive magnetic sensor. This new device may be useful in various applications involving weak magnetic fields. Xiao Gang, head of the Brown Physics Department and senior author of the jour
On the 22nd, the reporter interviewed Wang Xiaofeng, secretary-general of the China Inorganic Salt Industry Association, and learned that in recent years, the low-cost loss of rare earth resources in China has been very serious. Data show that in 2005 China's annual export volume of rare earth
1, why double seat valve easy to oscillate when working? For single core, when the medium is open type, the valve stability is good; when the medium is flow closed, the valve stability is poor. Double-seated valve has two spools, the lower spool in the flow closed, the valve spool is open, so that w
Foreword Clusters or clusters are intended to have the same or similar things in one place. As early as the 1970s or earlier, foreign scholars (Czamanskis 1974) introduced clusters to economics and proposed industrial clusters. The concept of "industrial cluster", in 1990, Professor Por
BALL VALVES: These valves have a rated safe working pressure of 150 psi and a non-aggressive cold working pressure of 600 psi. Two-piece cast bronze body , PTFE seat, standard runner, separate packing nut, adjustable stem packing, blowout stem and chrome-plated brass / bronze balls. Where pressure d
The list of "China's Most Valuable Trademarks 500" selected by the China Brand Institute has been announced. "Weichai" ranks 81st in the 500 strongest with a trademark value of 2.251 billion yuan, ranking first in China's most valuable trademark diesel engine industry.
Reporter: Please analyze the demand for drying equipment in China in the next 5-10 years. What are the industry's technological level improvements? Niu Xinghe: In the long run, the proportion of dried grain machinery in developed countries is very high, such as Japan reaching 92% (rice), the U
The third preparatory meeting of the “World Biofuel Forum†was held in Geneva from December 19 to December 20, 2006. The National Development and Reform Commission dispatched a delegation led by Deputy Director Xiong Bilin to attend the meeting. The Chinese Permanent Mission to the Unit
The era of "cars = luxury goods" is long gone. According to statistics, the number of vehicles in the city of Hangzhou has reached 1.18 million, 322.7 million in the urban area (excluding Xiaoshan and Yuhang), and the number of private cars in urban areas has reached 25 vehicles/hundred.
On January 17, the “Inner Steel 1780mm Large-scale Wide-band Steel Cold Rolling Production Line Process Equipment Technology Domestic Independent Integration and Innovation†project won the first prize of National Science and Technology Progress Award. This is the compa