in the form of passive seismic methods, broadband seismometers have been used in hydrocarbon exploration. the frequency bandwidth typically studied is in the range of 1–6 hz. the observations on low frequency band of microtremors are used to calculate the spectral ratio of vertical and horizontal components (v/h) and power spectral density (psd). attributes based on the v/h ratio and the psd ha...

A lot of oil and gas reservoirs have been or will be abandoned in petroleum industry. In this study, we pointed out that these oil and gas reservoirs might be transferred into exceptional enhanced geothermal reservoirs with very high temperatures by oxidizing the residual oil with injected air. A concept to generate power from these exceptional enhanced geothermal reservoirs by using geothermal...

Topical application of 2% neem oil mixed in mustard oil provides 86.1% protection for about 7 hours against the bite of Phlebotomus papatasi (Scopoli) under laboratory conditions (Sharma and Dhiman, 1993). One ml of 5% neem oil in acetone applied to cardboard mats when used on electric heating device marketed for use for synthetic pyrethroid mats, have been reported 100% effective as space repe...

Field and laboratory investigations were undertaken at Nagarjun Medicinal Plants Garden from 1984 - 1987 with object to find out the suitable variety of palmarosa having high yield of foliage and oil. From the pooled analysis the variety IW - 3631 showed highest dry foliage yield (10271 KG / ha) which was significantly superior over all varieties i.e, IW 3632, IW-3630, IW RRL (B) - 65 and IW - ...

Industrial growth has accelerated the emission of various oily water from the sources such as petrochemical and metallurgical industries,transportation, & domestic sewage which contains 70% free oil,25% emulsified, 5% soluble oil. The Present work was inspired by a small note published in science reporter.Keeping the concept in mind , the subject is explored further and its application in the f...

This paper reviews our knowledge of 011-pollution effects on coral-reef communities, concentrating on research done since the last review on this subject by Johannes (1975). The review focusses on crude-oil effects on scleractinian corals and octocorals and summarizes the small amount of work conducted on other reef organisms, as well as on the reef flora. Until 1975 there appeared to be no con...

Bark volatiles from green ash Fraxinus pennsylvanica were tested for electrophysiological activity by Agrilus planipennis using gas chromatographic-electroantennographic detection (GC-EAD) and for behavioral activity using baited purple traps in Michigan. GC-EAD analysis of the headspace volatiles of bark tissue samples from 0- and 24-h-old fully girdled (stressed) ash trees showed that the lat...

The transport of fluids at functional interfaces, driven by the external stimuli, is well established. The lossless transport of oil-based fluids under water remains a challenge, however, due to their high stickiness towards the surface. Here, a superhydrophilic and underwater superoleophobic tri-phase water/oil/solid nanoarray surface has been designed and prepared. The unique tri-phase surfac...