There is need for the investigation into heavy metals and microbial loads in edible aquatic organisms, to evaluate their safety and compliance with standards approved by international regulatory bodies’ which regulates food and water quality. The heavy metals and total heterotrophic bacterial (THB) concentrations in catfish, surface water bodies and sediments collected from the wetlands of Isoko region of Delta State, Nigeria were determined in accordance to standard approved methods. The laboratory results revealed that the lead, cadmium, zinc and THB concentrations in the fish body parts (gills and muscle) sampled were lower, compared with those obtained from sediments samples. The lead concentration was 1.13 mg/kg and 28.01 mg/kg for the water and sediment samples respectively. Cadmium concentration of 0.19 mg/kg and 1.64 mg/kg was recorded for the water and sediment samples respectively. Then the zinc concentration was 0.39 mg/kg in the water sample and 87.17 mg/kg in the sediment samples. In terms of the fish body parts, the results revealed that the zinc, lead, cadmium and THB concentrations in the fish gills were higher, compared to the values recorded in the fish muscle. It was observed that the cadmium concentration in the fish gills and muscle was higher than the maximum allowable limit of 0.17 mg/kg approved by the FAO; while the lead and zinc concentrations in the fish gills and muscle were lower than the maximum allowable limit of 0.5 mg/kg and 67.1 mg/kg respectively, approved by the FAO for edible fish. Finding from this study will be helpful in taking appropriate measures to prevent bioaccumulation of toxic heavy metals and microbes in aquatic organisms, to levels above the maximum allowable limits approved by FAO or other regulatory bodies.

Development of high temperature dense refractory bricks using clay minerals and grog has been carried out with a view to determining the consequence of variation in percentages of Al2O3.2SiO2.2H2O and grog on the properties of locally produced dense bricks. The raw materials were used to compose five batches (of five samples each) from all the clay minerals and their blends (ED1–EN5). The clay bodies were hydraulically shaped and oven dried at 1100C. The properties of the produced bricks investigated after sintering at 13500C indicated that samples ED1–EN5 had shrinkage ranging from 8.4%-11.5% with corresponding bulk density of 1.57g/cm3–2.26g/cm3 respectively. The investigation revealed that samples ED1–EN5 of the bricks as stated above had compressive strength ranging from 13.5MPa–23.1MPa with corresponding porosity ranging from 12.84% -23.39% respectively. The estimated refractoriness using shuen’s formula shows that samples ED–EN5 had 16660c-17680c, while the result of the refractoriness using pyrometric cone equivalent indicated that samples ED1–EN5 had cone 30(16600C)– <34(<17500C) respectively. The spalling-count test result revealed that samples as stated above had number of cycles ranging from 19-35 respectively. It was discovered that the higher the grog content, the lower the shrinkage, bulk density and compressive strength while the higher the porosity, spalling-count-cycle with refractoriness, and vice versa when considering blended samples with increase in Al2O3.2SiO2.2H2O content. However, sample EN4 gave the most apposite result when considering the properties stated above. Therefore sample EN4 is recommended for mass production of dense refractory bricks for high temperature applications.

Operational cost efficiency in each building in this case multi-storey buildings for offices is highly considered by the building manager. The main equipment used and incur considerable operational costs one of them is an air system or AC system device. In this writing will be explained the comparison of the efficiency of the use of cooled chiller type air with air cooled VRF (Variable Refrigerant Flow) both in terms of service.

The study area falls within the basement complex of northcentral Nigeria and covers four adjacent quarter degree sheets of 126 (Ririwai), 127 (Kalatu), 147 (Lere) and 148 (Toro) in some parts of Kaduna, Bauchi and Plateau States, Nigeria. This paper is aimed at interpreting the Aeromagnetic data to delineate structures in some parts of the Nigerian younger granite province. This was achieved by determining depth to basement, and developing a 2D model of the shape, location and depth of structures in some parts of the younger granite province. The anomalies on the aeromagnetic map were defined by fitting a first order polynomial to the total fields, by the method of least squares to obtain the residual field data. First vertical derivative and analytic signal computed, defined distinct pattern of the magnetic signatures. Depths to the source of the geologic structures where obtained from Werner and Euler deconvolution solutions which gives an average depths range of 231.2 m to 1040 m, with very few solutions having depths less than 200 m, the most prominent structure particularly the Ririwai ring complex have a depth range of 337.5 m to 465.5 m. The depth to basement for Werner solution ranged from 60 m to 420 m and the depth to basement of the contact model is shallow with depth of (60 to 420m) as compared to the dike model (200 to 420 m).

The effects of Al content and ternary additions such as Mo, V and Si in as cast  based alloys made by plasma arc melting on solidification structures and mechanical properties were studied. The Columnar  /2 lamellar structures in Al-lean alloys due to primary  solidification had higher room temperature fracture strength and strain than  phase structures through the reaction of L+= in Al-rich alloys. The fraction of α2 phase was found to decrease with increasing Al content in binary alloys. Fractography revealed that fine translamellar fracture is a man fracture mode in Ti-48at.%Al alloy which led to a high fracture with more than 5%. The RT fracture strain was improved by the addition of 1.5at.% Mo and 1at.%Si. The mechanical propertied have been discussed in term of changes in unit cell volume and axial ration. In the case of Si, tensile properties coincided well with the change of axial ratio c/a. The strength and strain could be raised slightly to compare with binary system. The standard deviation has been low in lattice constant so deviation of c/a is 0.43% which is good one to help to analyze the strain in TiAl-X alloys. The first factor is c/a which means atomic anisotropy then is c*a2 which is unit atomic volume of γ phase. The decreasing c/a is to decrease the atomic anisotropy and increase the materials atomic ductility in TiAl-X alloys.

Cereals are used as staple food in the world because they provide more energy and important source of vitamins, minerals, protein and carbohydrates. Oat is considered important cereal cultivated in different regions due to its ample source of soluble dietary fiber. Bran is the outermost layer of the grain which contains the appreciable amount of soluble dietary fiber called β-glucan helpful in lowering cholesterol and maintaining glucose level. Due to the health benefits of fibrous material from oat bran it gained more importance globally and has been added in different food items. But incorporation of fibrous material in food items negatively affects the characteristics of product ultimate acceptance. To improve the functionality of fibrous material, different methods are applied such as addition of chemicals and enzymes but they did not gain much popularity because people demand organic foods. So, the current study was designed to improve the functionality of fibrous material through extrusion cooking as it is more effective than other techniques. Proximate analysis expressed that oat bran had moisture, protein, fat, ash and fiber content as 8.25±0.04%, 14.15±0.07%, 6.12±0.05%, 2.50±0.10% and 3.55±0.23%, respectively. Extrusion of oat bran was done by using the barrel exit temperature 120˚C, 140 ˚C and 160˚C, screw speed 100rpm, 150rpm and 200rpm and feed moisture was 20%, 30% and 40%. Extruded bran was investigated for total dietary fiber, soluble dietary fiber and insoluble dietary fiber. Extrusion parameters had showed positively significant (P<0.01) effect on dietary fiber content, β-glucan content and extractable β-glucan content. In conclusion, current research showed that extrusion treatment of oat bran results in increased availability of fiber.

Sensing of channel to detect the presence of primary to provide the vacant band to secondary users we use the Energy Detection Technique Algorithm in Cognitive Radio. The simulations of a proper coding to detect or shows the all kind of requirements like Presence of primary and secondary and level of noise and level attenuation The behaviors of Energy Detection Scheme in Cognitive Radio is mainly depends upon three parameters like Probability of Detection, Likelihood of False discovery, Probability of Miss recognition is likewise enhancing by utilizing the created MATLAB codes. Vitality Detection Technique is best strategy for cognitive Radio for low SNR.

This research Paper represents a recent use of the extended local binary pattern for face recognition. Extended Local Binary Pattern (ELBP) Technique is more accurate and describes the texture and shape of a digital image by using of 3*3 & 5*5 matrices we have to compare the performance of both matrices so that how we recognize the image. Variance help to measure continuous output where the quantization is needed. By dividing an image into several small region from which the feature are extracted. If match is found then image face is recognized otherwise if match does not found then image face is not recognized. If we saw at the mirror we can see that our face has different type of human expression. These are the peak and valley that make up the different facial features.

Ancient documents play an important role in history. Various information regarding the literature, tradition and culture is kept in these documents. These heaps of documents are degraded because of some climatic circumstances, low quality and inappropriate holding. This paper reviews on the techniques used to retrieve the necessary content from these ancient documents. The techniques include preprocessing, image binarization, thresholding methods and post processing methods. Further, during scanning the document it can get corrupted with some unwanted lines or signals termed as noise that should be eliminated.