RESEARCH ARTICLES

Agriculture and Biological Sciences

Compatibility of cocoyam(Xanthosoma sagittifolium(L.) Schott,egusi melon(colocynthis citrullus L.) and pumpkin (Cucurbita pepo L.) in intercropping system - 

H. TIJAN- ENIOLA and F. A EKANEMA 

409

Effects of leaf extract and leaf meal of Calapogonium Mucunoides desv and E remomastax polyspema (BENTH.) dandy on th growth of Heterobrachus Longifilis (Valenciennes). -

S. B EKANEM. 

417

Waterleaf (Talinum Triangulare-wild) production in South Eastern Nigeria:Existing practices,and suggestions for increased productivity and profit.

EMMANUEL O. EYO, E. O. EKPE and P. I. OGBAN

421

Effects of petroleum products on the survival of beneficial pseudomonas species.

EKANEM C. WOKOMA 

427

The prevalence of lice and fleas of chicken in Bokkos local government area of plateau State, Nigeria 

MATUR BERNARD MALAU and NOAMI JAMES RUGU 

433

Evaluation of soem cowpea (Vigna Unguiculata(L.)walp) cultivars adaptable to acid 

soils of Uyo, South Eastern Nigeria.

BASSEY A. NDON and N. U. NDAEYA 

437

Chemical Sciences 

Effects of cyanide and various concetration of scopoletin on some serum lipid levels of of wistar rats

LAWRENCE U. S. EZEANYIKA,ONYECHI OBIDOA, JONATHAN W.ULEA and ISMAILA A. UMAR. 

443 

Studies on hepatic glutathione-s-transferase specific actvity following primaquine pretreatment in wistar albino rats

V. C. IKPEAZUOKEZIE, DUNSTAN A. A. AKINTOWA, ASHANG B. UTU-BAKU 

447

Physicochemical characterization of breadnut (Artocarpus) seed oil

NWIBANI M. NWINUKA , JOY OGBANDA and EDWARDO. AYALOGU 

451

Evaluation of chemical compostion of indeginous species and flovouring angents 

D. E. OKWU 

455

Sorption, diffusion and energetic properties of polyropylene samples in aromantic solvent.

T. C. UZOMAH and I. L. IBRAHIM 

461

Heavy metals in top soils of Abeokuta dump sites

O. O. ODUKOYA, O. BAMGBOSE and T. A. AROWOLO 

467

Earth Sciences

Gravity evidence for a possible plate -tectonic origin of Namaquo/Damara structural province boundary in Namibia and Botswana.

E. A. EMENIKE 

473

Electical resistivity soundings to determine subsurface contamination in the vicinity of refuse dump

B. S. BADMUS, T. OYEDELE, and E. A OJELABI 

477

Occurance, chemical compostion and and industrial quality of limestones in Guyuk, North Eastern Nigeria

EYO E. NTEKIM and DLAMA K. ZIRA 

483

Lithofacies analysis of conglomerates in the North Eastern part of Niger Delta, Nigeria

DAVID O. INYANG 

493

Geoelectric investigations of ground water resources at Onibode area, near Abeokuta South Eastern Nigeria

K. F. OYEDELE 

501

Petroleum hydrocarbondegarding capabilities and growth profile of bacteria from crude oil polluted ultisol and brackish water

ALFRED Y. ITAH and JOSEPH P.ESSIEN 

507

Applicability and realibility of World health Organisation sanitary survey(ss) methoid in bore water quality analysis in Uyo.

B. B. ETANG 

513

Assessment of water quality and macroinvertebrate abundance in OPA stream-reservior system,

Ile-Ife- SYLVESTER S OGBOGU 

517

Impact of refuse dump sites on gorund water quality in Jos,Bukuru and environs, Nigeria

S. J. SALAMI, T . C. IROEGBU and J. N. EGILA 

523

Mathematics, Physics and Computer Sciences

The computation of system matrices for biquadraticsquare finite elements 

GABREIL ATAH OLAYI 

529

Weighted least square method and associated time series data problems

A. C. EKE, D. ENI and J. ATSU 

535

A Neumann problem for an elastic cylinder undr out-of plane loading

JAMES A. NNAPI 

541

Analysis of noise bother by survey method 

A. I. MENKITI 

545 

Metallurgical applications of ion implatation: A review -

J ADEWUYI AKINTUDE 

553

Investigating the equatorial ionospheric F- region at sunrise

E. E. IHEONU and O. S. OYEKOLA 

563

Locally available materials for use as flat plate solar absorber

A. A. OKON, U. A. UKPONG and G. F. AKPABIO 

571

Thermai properties of oil and raffia palm fibres

LOUIS E. AKPABIO, SAMUEL D. EKPE, SUNDAY E. ETUK and KUFREABASI E. ESSIEN 

575

Verification of relationship between relative permitivity and vicosity for determination of adulteraion and grades of engine oil samples

SUNDAY E. ETUK, LOUIS E. AKPABIO and SAMUEL D. EKPE 

579

Factors that consititute road traffic noise in Nigerian environment

A. I MENKITI 

585

Common errors and perfomance of students in junior secondary mathematics certificate examinations in Cross River State, Nigeria

CECILIA OLUNWA EKWUEME and N. JOHNSON NENTY 

591