the essential oil of stachys lavandulifolia vahl (lamiaceae) was isolated by hydrodistillation of the aerial parts of the plant, with a yield of 0.25%. the chemical composition of volatile oil was analyzed by capillary gc and gc/ ms. the main components were germacrene-d (13.2%), ?-phellandrene (12.7%), ?-pinene (10.2%), myrcene (9.4%), ?-pinene (8.4%) and z-?-ocimene (5.8%).

The application of the local meshless numerical method (LRBFCM) for solving a system of coupled partial differential equations (PDE) is explored. The numerical approach is tested on the natural convection based fluid flow problems. The fluid flow part of the solution procedure is coupled locally despite its global nature. Such an approach makes the computations convenient for an implementation ...

An efficient in vitro regeneration protocol has been developed from shoot tips of Drosera burmannii Vahl., a carnivorous plant of north-east India. Various plant growth regulators were used to study their efficacy in the induction of multiple shoots and roots. Of the various treatments, the maximum number of shoots (28.8 ± 1.5) and roots (9.7 ± 0.6) was observed in one-fourth strength standard ...

Using existing heat transfer data, a relatively simple expression was developed for estimating the effective thickness of the boundary layer of air surrounding cylinders. For wind velocities from 10 to 1000 cm/second, the calculated boundary-layer thickness agreed with that determined for water vapor diffusion from a moistened cylindrical surface 2 cm in diameter. It correctly predicted the res...

Bu çalışmada Lamiaceae familyasına ait Salvia candidissima Vahl türüne S. subsp. candidisma ve occidentalis alt türleri morfolojik, anatomik, tohum mikromorfolojisi açısından değerlendrilmiştir. Morfolojik çalışmalarda türlerin; gövde, yaprak, çiçek meyve kısımlarının ölçümleri yapılmıştır. Anatomik incelemelerde, türün kök, gövde yapraklarından, mikrotom el ile kesitler alınarak boyanmış daimi...