Physicochemical, microbial and sensory properties of milk, butter and garlic butter

A study on the physicochemical, microbial load and sensory properties of milk, butter with or without garlic was carried out using fresh milk from white Fulani cow for eight weeks of the lactation. The milk used was milked manually by the Fulanis early in the  morning. Fat content was highest in milk (4.13±0.16) and least in garlic butter (2.50±0.46). There was no observed significant (P>0.05) difference in the protein, lactose, total solid, ash and pH of the milk, butter and garlic butter. Lactose content of the  products differs with milk having highest (2.82%) while butter had the least (1.26%). Fat content in milk, butter and garlic butter varies in value from 4.13%, 3.25% and 2.50% respectively. Total solid obtained in this study was 9.22% for milk, butter 8.21% and garlic butter 7.69%. Ash content of milk and butter were 0.72% and 0.64% respectively. Garlic had a significant effect on all the microorganisms present in the butter. The taste panel ratings for butter and garlic butter shows that the taste, aroma, flavour and acceptability of ordinary butter were more preferred by the panellist.Keywords: Physicochemical, Microbial, Sensory, Milk, Butter, Garlic butte

Effects of Tractorization and Organic Manure on Physical Properties of Sandy Loam Soil in Abeokuta, Nigeria

Soil compaction has effect on soil physical properties which could affect crop growth and yield. This study was conducted to determine the influence of incorporating organic materials and load application (tractorization) on the physical properties of sandy loamy soil in Abeokuta, Ogun State, Nigeria. Organic materials were cow dung, poultry and swine manure. Application rates of organic manures were 0 (control), 5 and 10 tonnes per hectare. Forty-five plots measuring 5 by 3 m were established in a complete randomized block experimental design with three replications making a total of 135 plots. Load application was done using an MF 435 tractor coupled with a 20-disc harrow at 0 (control), 5, 10, 15 and 20 passes. Penetration resistance, bulk density, gravimetric moisture content andporosity were determined using standard procedures. Penetrometer resistance at these passes were 392.2, 293.3, 285.0, 302.0 and 224.9 kPa respectively with significant differences between treatments (P≤0.05). Mean bulk density for the passes were 1.21, 1.26, 1.31, 1.27 and 1.29 g/cm3 respectively and bulk density increased with tractor passes. The effect of tractor passes, and manure incorporation rate did not have any significant effect on gravimetric moisture content. Poultry manure increased bulk density and penetrometer resistance on plots than swine manure and cow dung hence poultry manure at 10 t/ha can be incorporated on a sandy loam soil to enhance soil fertility and sustainability. Keywords: Tractorization, organic manure, sandy loam, penetration resistance, bulk densit

Some Physiological Responses of Clarias gariepinus Fed Graded Levels of Cirina forda Larvae Based Diets

The study examined the growth performance, hematological and digestive enzymes of Clarias gariepinus juveniles fed Cirina forda meal (CFM) based diets in the laboratory for a period of 10weeks. Five iso-nitrogenous (30%) experimental diets were formulated at various levels of CFM inclusion levels of 0% (control), 10%, 20%, 30%, 40% and 50%, designated as diets Q, A10, B20, C30, D40 and E50 respectively. Fish fed the CFM based diets showed mean weight gain (MWG), specific growth rate (SGR) and protein efficiency ratio (PER) comparable to the control diet. There was significant differences in the digestive enzyme activities of the fish as the CFM level in the experimental diets increased. Protease and maltase activities significantly increased, with diet C30 recording the highest maltase activity (4.37) while the cellulase and glucanase activities of the fish significantly (P0.05) between the PCV and RBC of the blood of the fish fed the various diets. Highest RBC (2.75 x106/µL) was obtained in fish fed the control diet while the lowest (2.55 x106/µL) was recorded in the fish fed diet E50. The White Blood Cell count and the Neutrophils of the fish fed the trial diets were not significantly higher (P>0.05) than those of the fish fed the control diets. From the results of this experiment, it is concluded that up to 50% inclusion level of Cirina forda meal in the diet of Clarias gariepinus was tolerable for good growth and physiological well-being of the fish

Constructal design of single microchannel heat sink with varying axial length and temperature-dependent fluid properties

The objective of this numerical study is to investigate the best geometric configuration that maximises heat transfer from the heated base by allowing both the length of the solid substrate and the microchannel heat sink freedom to morph. The thermal performance of the microchannel is based on the minimised peak temperature on the heated surface which gives a global minimised thermal resistance. The optimisation of the geometric parameters of the heat sink and solid substrate is carried out using a computational fluid dynamics code with a goal-driven optimisation algorithm. Results of the effect of Bejan number on the minimised peak temperature and minimised thermal resistance for solid substrate with varying axial lengths of 1 to 10 mm but fixed volume of 0.9 mm3 is presented. Results of optimal channel aspect ratio, solid volume fraction and channel hydraulic diameter of the microchannel were also presented.NRF, TESP, University of Stellenbosch/ University of Pretoria, SANERI/SANEDI, CSIR, EEDSM Hub and NAC.http://www.iieta.org/Journals/IJHTam2016Mechanical and Aeronautical Engineerin

Constructal design of combined microchannel and micro pin fins for electronic cooling

This paper presents a three-dimensional numerical study of steady, laminar, incompressible flow and forced convection heat transfer through a microchannel heat sink with micro pin fin inserts for both fixed and variable axial lengths. The objective of the study was to optimise the geometric configuration of an integrated microchannel and micro pin fins for different solid volumes so that the peak temperature in the configuration was minimised. The effect of the micro pin fins on the optimised microchannel was also investigated. The geometric optimisation of the integrated microchannel and micro pin fin was carried out using a computational fluid dynamics (CFD) code with a goal-driven optimisation tool subject to global constraints. The optimisation procedure was carried out in two steps. Firstly, the microchannel configuration was optimised without the micro pin fins inserted and the results were compared with similar work found in the open literature. This optimisation was carried out for both fixed and relaxed lengths. Thereafter, the integrated design of the microchannel and micro pin fins was optimised. The effect of the Bejan number on the solid volume fraction, channel aspect ratio and hydraulic diameter, pin fin aspect ratio, minimised peak temperature and maximised thermal conductance were reported. Results showed that as the Bejan number increased, the minimised peak temperature decreased. Also, the maximum thermal conductance increased with the optimised microchannel structure with three to six rows of micro pin fin inserts. Diminishing return set in when the number of rows of micro pin fin inserts was greater than three for the fixed length but for the relaxed length, as the number of rows increased, the results improved but when it exceeded six diminishing returns set in for a fixed solid volume of 0.9 mm3. For each Bejan number used in this study, there was an optimum channel hydraulic diameter and aspect ratio, solid volume fraction and pin fin aspect ratio that satisfied the global objective.NRF, TESP, University of Stellenbosch, University of Pretoria, SANERI/SANEDI, CSIR, EEDSM Hub and NAChttp://www.elsevier.com/locate/ijhmthb2014ai201

Performance characteristics, nutrient digestibility and blood profile of rabbits fed diets containing graded levels of Moringa oleifera seed powder

A ten-week feeding trial was conducted to determine the performance, nutrient digestibility and blood profile of rabbits fed diets containing graded levels of Moringa oleifera seed powder (MSP). Twenty-four male growing rabbits of mixed breeds were randomly allotted to four dietary treatments. Each treatment group was further sub-divided into three (3) replicates of two (2) rabbits each in a completely randomized design (CRD). Four diets were formulated to include MSP at varying inclusion levels of 0, 0.5, 1 and 2% for treatments T1, T2, T3 and T4 respectively, which were pelletized. Feed and water were provided ad-libitum. Data were collected on growth performance and nutrient digestibility of rabbits fed the experimental diet while at the end of the experiment, blood samples were collected to determine the effect of different inclusion levels of MSP on haematological and serum biochemical indices of rabbits. Result revealed that the average daily feed intake (68.76-78.93g) decreased significantly (p<0.05) across the dietary treatments as the MSP inclusion levels increased but a rise was noticed at the highest inclusion level of MSP (T4). The weight gain and feed conversion ratio (FCR) were not significantly influenced (p >0.05) by the dietary treatments. No significant differences (P>0.05) among treatments were observed on all the blood profile except the lymphocyte, monocytes, total protein and globulin. Rabbits on T4 recorded the highest values in total protein (6.91 g/dl) and globulin (3.03 g/dl). Digestibility studies however showed that all the parameters were significantly affected (p<0.05) by dietary treatments in which rabbits on T2 had the highest dry matter (82.03%), crude protein (62.23%) and ash (89.48%) digestibility values. It can be concluded that Moringa oleifera seed powder (MSP) can be supplemented in growing rabbit’s diet without any deleterious effects on performance, blood profile and nutrient digestibility.Keywords: Moringa oleifera, Performance, Blood profile, Nutrient digestibility, Rabbit

Phytochemical, Antimicrobial and Gc-Ms of African Nutmeg (Monodora Myristica).

The quest to continue searching for new antibiotic, anti-parasites necitate this project as African nutmeg is a very useful plants medically and all its parts are useful. The major aim of this research work was to examine the monodora myristica for its secondary metabolites, antimicrobial analysis and to characterize the oil using gas chromatography mass spectrophotometer. The antimicrobial screening was done using agar method and the isolates used were obtained from the microbiology laboratory, Federal University of Technology, Akure, saponin, alkaloid, tannin and flavonoids were determined using standard methods. The results of the characterization of oil showed that organic compounds and fatty acids were present, the fatty acids present included, Palmitic acid, Eicosanoic acid, stearic acid, oleic acid, the results showed that the plants contained essential fatty acids useful for both adult and infant. The result of antimicrobial screening showed that the oil was very sensitive against the tested isolates. After 24hours incubation, the zone of inhibitions against Escherichia coli was (11millimetre), Bacillus substilis (8millimetre) and Staphylococcus aureus (11millimeter). The result compares favorably with standard streptomycin, the result of zone of inhibition against Escherichia coli of the sample (11millimetre) was better than that recorded for standard streptomycin (7millimetre).These may be as a result of presence various secondary metabolites which were discovered in the sample during analyses. These are flavonoids, tannin, saponin and alkaloids

A stone age conduct of unsafe abortion in adolescent: Complicated by gangrenous uterus and bowel

Unsafe abortion in adolescents is of great public health challenge and it occupies a large armamentarium in contemporary adolescent reproductive health issues. This case report was that of induced unsafe abortion, done without analgesia and inside a sitting room, in a 15‑year‑old, secondary school girl, nullipara; complicated by gangrenous uterus and bowel for which she had subtotal hysterectomy, bowel resection, and anastomosis. Primary preventive strategies should be the cornerstone of prevention with more emphasis on advocacy for adolescent sexuality and  reproductive health education, information, and family planning/emergency contraception.Keywords: Adolescent; complication; unsafe abortio

Quantitative depth estimation using analytic signal at low-latitude for ground gravity survey of Gbede, Oyo State

This paper presents the insitu gravity survey of basement complex rock in Southwestern Nigeria. In the E-W direction, LaCoste and  Romberg Gravity Meter type G309 was used to carry out a ground gravity survey where ten traverses were established over a distance of 1000 m by 500 m with station spacing of 20m and a traverse interval of 50 m. Observed gravity values were corrected, analyzed and  interpreted quantitatively. The corrected bouguer gravity data were presented as bouguer anomaly graphs. Analytic Signal at low-latitude was adopted to compute the depth to source of iron-ore for a contact, a thin sheet (dyke) and a horizontal cylinder. The result revealed a depth range of 5.45 m-8.25 m for a contact, 9.44 m-14.29 m for a thin sheet (dyke) while a depth range of 12.31 m-18.05 m was estimated for a horizontal cylinder respectively. An average depth of 11.81±3.64 m was estimated for the entire area irrespective of the structural model, this was compared with published magnetic results of the study area and a small disparity of potential field measurements was recorded. The overall computed results signified the existence of iron mineral deposits at low depths across the study area