Manila Journal of Science

Singular and Non-Singular Oriented Wheels S. Gervacio Abstract This paper extends the concepts of singular and non-singular graphs to diagraphs. Reduction formulas are established here and used to investigate oriented wheels. All orientations of a wheel which yield a singular …

A Teacher's Nomograph S. Gervacio & S. Tan   Abstract This paper discuss the use of a graphic representation known as nomograph in the computation of weighted average of a student's grades. Other interesting applications as well as their mathematical …

Synthesis of D-Galactose-Modified 1,3-DiThiole-2-Thione Derivative G. Alea, P. Alto, E. Garcia, G. Janairo, J.M. Quibilan, and D. Yu Abstract A procedure for the synthesis of the novel 4-mercapto-5-(6-O-2'-ethylene-1,2:3,4-di-O-isopropylidenegalactopyranosylthio)-1,2-dithiole-2-thione (7) is described. View PDF

Studies on Some Protozoan Coccidian Zoonotic Infections in the Philippines: A Review F. Claveria Introduction The Philippines, off the coast of Asia and a little above the equator is endowed with a tropical climate all year round, with temperatures ranging …

Quasilocal Background Approach to the One-loop Effective Action E. Rodulfo and M. Tiamzon Abstract The one-loop effective action that accommodates an arbitrary number of covariant derivatives of a strong but slowly-varying background field is presented in closed form. The internal …

Soil Transmitted Roundworm Infection on Grade Two Students L. Brion Abstract Stool specimen from 239 randomly-selected Grade II students of General Tiburcio de Leon Elementary School were collected to determine the prevalence  and intensity of soil-transmitted roundworm infection among these …

Light & Shadow at the DLSU: Not a problem at all for the quantum yield of photosystem II (Y) of plants growing on the campus: But how to determine Y experimentally? H. Gimmler, J. De Jesus, and J. Carandang VI …

Leonid Showers R. Roleda   View PDF