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Analyses were carried out using STATA/SE version 16.0 (StataCorp, College Station, TX, USA). Analyses were weighted by using the svy Stata command to account for the complex sampling design. P values were two-tailed and p < 0.05 was considered as statistically significant. ...
Oil change interval (km) 1,500 10,000 15,000 18,000 New lubricant requirements and specifications of passenger car motor oils. The new requirements for passenger car motor oils will likely be designated API “SK”. The API “SK” requires no new engine tests compared to those used to docu...
Although the distance between perforation clusters is the same as case 1, the orthogonal fracture distance between two neighboring fractures was reduced to from 140 ft to 99 ft due to the change of fracture orientation. Figure 2(b) compares the difference of the oil recovery factor ...
In addition, it assesses the conclusions drawn by researchers against this background and the current pattern of change in the industry. The comparison involves three stages: (1) trade flows—oil and LNG trade flows are very similar, mainly due to the common distribution of the oil and gas ...
]. All analyses were conducted using the Review Manager by the Cochrane Collaboration (version 5.2) and STATA 13.0 (Stata-Corp, College Station, TX). Missing data Dr. Goldbourt (personal communication) provided the 23 year follow-up all-cause mortality and cardiovascular mortality data of the ...
IADC’s workforce attraction program, Houston Community College initiative to boost recruitment. President emeritus of the International association of drilling contractors (IADC), Lee Hunt, blogging on GE’sChange Forumobserved starkly that ‘between retirements and industry growth, we collectively face...
It will take a long time to change those statistics. The oil does flow. If the Navy would reduce their diesel fuel consumption by half, the world would have 8 percent more diesel fuel for use in tractors for the ag industry. It really is a misdirected allocation of resources and especiall...
Surfactant, oil and water ratio change from 1 to 8. (B) Phase diagrams generated according to the equilibrium phase behavior. (C) Dynamic interfacial tension between dodecane and water, stabilized by Janus nanoplate surfactants and PPA-modified halloysite platelets. Full size image Enhanced Oil ...
Generally, adjustment for benzene exposure from other work and from smoking had negligible effects on the HRs, and no change of direction occurred except for estimates close to the null, in agreement with a low degree of confounding. Still, our adjustment was rather crude and residual confounding...