Graetz and Nusselt studied heat transfer between a developed laminar fluid flow and a tube at constant wall temperature. Here, we extend the Graetz–Nusselt problem to dense fluid flows with partial wall slip. Its limits correspond to the classical problems for no-slip and no-shear flow. The amount of heat transfer is expressed by the local Nusselt number Nux, which is defined as the ratio of co...

The present study was aimed at harvesting microalga, Chlorella vulgaris, by bioflocculation using seed powder of clearing nut, Strychnos potatorum. The research was essentially the prime step to yield a large biomass for utilising the cells in biodiesel production. Optimization of the parameters influencing bioflocculation was carried out statistically using RSM. The optimized conditions were 1...

Lately there has been increasing interest regarding the practice of traditional healers and their use of indigenous plants to treat illnesses. Twenty-three local healers (n'ganga) in Chiawa, rural Zambia, were interviewed about knowledge, practices, and their use of indigenous plants in the diagnosis and treatment of sexually transmitted illnesses (STIs) among male clients. They were also asked...

An ethnobotanical study was conducted in the Wechiau Community Hippopotamus Sanctuary area in Ghana, through interviews and quadrate studies, to investigate the range and abundance of species used in the treatment of malaria. Forty-one species belonging to 17 families were encountered during the study. Of the 17 families studied Leguminosae and Anacardiaceae predominated in terms of number of s...

Fractionation of an antitrypanosomal lipophilic leaf extract from Strychnos spinosa led to the isolation of eight triterpenoids and sterols in this plant part for the first time. Two of these were found to possess in vitro antitrypanosomal activity, namely, saringosterol (14) and 24-hydroperoxy-24-vinylcholesterol (15), with IC(50) values of 7.8 +/- 1.2 and 3.2 +/- 1.2 microM, respectively. The...

The antidiabetic effect of seeds of Strychnos potatorum Linn. was evaluated in a model of diabetes mellitus using streptozotocin (40 mg/kg b.w., i.p.). Changes in fasting blood sugar were estimated periodically for 12 weeks along with weekly measurement of body weight, food and water intake for 4 weeks. The antidiabetic effects were compared with glipizide as the reference hypoglycemic drug. St...

his excellent Life of Harvey in the revised bibliography, particularly as it illuminates the notes of provenance. Both Severino and Peiresc, who appear in the Appendix, seem to have owned and annotated copies of De motu cordis. Keynes's Life updates and sometimes contradicts previous statements in the bibliography, so that rewriting the bibliographical prefaces (a task shared by both editors, i...

The present investigation was carried out to evaluate the antibacterial activity of leaf and root silver nanoparticles synthesized using different solvents. According our studies AgNPs Strychons nux vomica from solvent extract revealed possess significant comparing exhibited by extract. Among AgNPS tested, ethyl acetate showed highest inhibitory acetone methanol extracts. based zone inhibition ...