Archives-October 2019

Kaolin is a clay mineral that has a wide application in the industry, depending on its purity. The quality of kaolin mined around the world is depleting especially with depth and rate of mining. Consequently the usability of this mineral is threatened by the presence of some inherent impurities. Beneficiation enhances kaolin applications; hence, it becomes imperative to understudy comparative means of upgrading kaolin, for the process integration and optimization. The amenability of using magnetic separation for removing the iron oxide and titanium oxide impurities from the Egyptian Kaolin has been studied. Different variables affecting of magnetic separation process such as solid percent, magnetic field, matrix loading capacity, and retention time were studied. The results indicated that substantial decrease in iron oxide (from 1.69 % to 0.75 %) and TiO2 (from 3.1 % to 0.71 %) contents as well as improving iso-brightness (from 63.76 % to 75.21 % and whiteness (from 79.85 % to 86.72 %) of the product could be achieved.

Since nerve compatibility - can be - the result of two cases of confrontation with a variety of random actuators or, stimuli and, facing the sources of sensory data and, schizophrenics, when faced with these conditions they are unable to understand and, interpret this conditions true basically; and this creates a vicious circle without learning exterior experiences and low self-esteem for them; that its result is low or, lack of self-confidence; then, learning-compatible with brain as a tool to understand the intrinsic actions of the brain with motivation is very effective and, useful for their understanding and, interpretation modification. The method used in this research is a library analysis; therefore, after collecting information and data from the sources, using the library method, according to the subject and the problem of the present study, after the critique, the information and, data have been analyzed in order to explain the research problem. By using and, application of exact awareness and, knowledge on “enriched” environments besides knowing “why” these environments are enrichment give us “Practical Components” for ((intrinsic motivate brain operations)) in neurological adjustment. For reaching to this point; it is necessary that neurological adjustment occurs in cellular base and, by doing this, (mental processes) will be done and, cognitive interpretations, attitudes and, other related process will have modified and, the result (s) of these cases are modification in behavior.

Effect of difference molar on the optical properties of Al2O3 samples, prepared samples by Sol-gel method. The optical characteristics of the prepared samples have been investigated by UV/Vis spectrophotometer(min 1240) in the wavelength range (370 – 390 ) nm .The samples have a direct allow electronic transition with optical energy (Eg) the value of 0.1 M sample (Al2O3) obtained was (3.276) eV while for other 0.3 M sample (Al2O3 ) was (3.269) eV. The value of ( Eg) was decreased from (3.276) eV to (3.269) eV. The decreasing of (Eg) related to increasing Aluminum Oxide molar on the samples. The maximum value of (n) is (2.1358) for all samples at the differances wavelength which is agreement with molar of Aluminum Oxide increased for all samples of (Al2O3). The results indicate the sample have good characteristics for optoelectronic applications.

Cronkhite Canada Syndrome (CCS) is a rare, non-hereditary disease that combines chronic diarrhea, diffuse intestinal polyposis and onychodystrophy. We are reporting on the observation of the first case of Cronkhite Canada Syndrome in Morocco. The case has to do with a 33-year-old patient with chronic bloody diarrhea associated with alopecia and onychodystrophy within a context of general deterioration and significant weight loss. The biological assessments were characterized by the presence of microcytic anemia with hypo albuminemia, malabsorption syndrome and hydro electrolyte disorders. The colonoscopy had shown several hamartomatous polyps located at the recto sigmoid level. The histopathological examination showed hyperplastic inflammatory polyps with extensive propria oedematous lamina, and cystic glands. The diagnosis of CCS was made in the face of a host of clinical, biological, endoscopic and histological arguments. Our patient received oral corticosteroids as treatment, along with nutritional support and a treatment of electrolyte disorders. Cronkhite Canada syndrome is associated with high mortality and a risk of malignant transformation. Clinicians should considerand think about CCS for a patient with unexplained chronic diarrhea and dermatological manifestations (Alopecia, Onychodystrophy, Hyperpigmentation).

The study examined the pattern of farmers land use on crop diversification in Ido Local Government Area of Oyo State. Multistage sampling technique was used to sample eighty (80) crop famers in the study area, with the aid of a well structured questionnaire and analysed using descriptive percentage, mean, frequency count and inferential statistic. The result showed that 73.8% of the crop farmers were male with mean age of 49.8 years, 83.7% were married with mean family size of 8 persons, and 43.8% of the farmers had one form of formal education, 60% used hired labour for their farm operation with minimum labour cost of N 1000- N 10000 on daily basis. 67.5% source their farm land through hired/rent and 61.2% source their capital through personal saving, 62.5% of them acquired information through radio and television. 93.7% of the farmer cultivated farm size less than 5 hectare with mean farming experience of 16.01years, 45% practice four cropping combination, which showed the extend of crop diversification among farmer in the study area. It was also revealed that 58.7% realize income of N 80,000- N 200,000, from their farm output per season, 75% of the crop farmer used inorganic fertilizer. The major dominant of crop in the area was cassava (91.3%), maize (86.3%) and vegetables (48.8%) different species, which may be inter/mixed cropping. The major land management practices adopted by the farmer in the study area were, manual method of land clearing (95%), Inorganic fertilizer (67.5%), improve varieties of crop specie(65%), crop rotation (61.2%) and cover cropping( 21.3%), while 72% apply chemical for weeding. The major problem of farmer on the land use on crop diversification, are basically land tenure, pest infestation among others. It was therefore concluded that there should be good land tenure system, farmer should be encouraged to adopt organic input method of farming, effort should be made by extension workers and research institute to the need of orientating and organizing organic farming system training program in other to improve soil fertility through combination of leguminous based cropping system should be encouraged in the study area.

Synthesis of new series of 3-[4-(1-acetyl-5-(substitutedphenyl)-4,5-dihydro-pyrazol-3-yl)phenyl]-6,8-dibromo-2-methylquinazolin-4-one has been achieved by the refluxation of 6,8-dibromo-3-{4-[5-(substitutedphenyl)-4,5-dihydro-pyrazol-3-yl]phenyl}-2-methylquinazolin-4-one with Glycial acetic acid for three hours. The intermediate have been synthesized by refluxation of 6,8-dibromo-3-{4-[3-(substitutedphenyl)prop-2-enoyl]phenyl}-2-methylquinazolin-4-one (0.01M) and 99% hydrazine hydrate (0.015M) by using ethanol (50ml) as a solvent with various aldehydes. The chemical structures of synthesized acetyl pyrazoline derivatives were characterized by their physical constants and spectral data. The new acetyl pyrazoline derivatives were screened for their antimicrobial activities against several bacterial and fungal species.

Effects of caterpillar (Imbrasia truncate Aurivillius, 1908) meal as a protein source in the diet of Oreochromis niloticus were investigated on growth performance, feed efficiency, whole body mineral composition and the cost/benefit analysis. The experiment was conducted in a completely randomized design with duplicate observations (3 treatments × 2 replicates × 35 fish per hapa-in-earthen pond systems) during ten weeks of duration using an open system. Water temperature and dissolved oxygen ranged respectively between 27.7 to 28°C and 4.5 to 6.0 mg l-1. The Nile tilapia (12.67±1.88 g initial body weight and 10.45 ± 0.03cm initial length) were fed three times a day with three calculated isonitrogenous and isoenergetic diets prepared by replacing fishmeal with caterpillar meal at 15% and 30%. The diets were coded T1 and T2 respectively. A control diet without caterpillar meal was coded T0. The fish fed with T1 and T0 diets were superior in specific growth rate (p< 0.05) when compared with fish fed with diet T2 treatment. On the other hand, the feed utilization parameter: feed conversion ratio (FCR), did not show significant differences(p? 0.05) between the fish in the control group and diet T1, although a significant difference between T1 andT2 treatments was observed. Results of body composition in response to dietary treatments showed no significant statistical difference (p>0.05) for moisture, fiber and minerals in contrast to protein, lipid and ash content where the difference was significant (p<0.05).The highest profit index (1.82) was recorded on diet T2. The lowest profit index was in the control but the differences were not significant (p? 0.05).These results indicate that incorporation of less than 30 % of caterpillar meal as a substitute for fishmeal could be feasible in the diet of Nile tilapia. Further studies are recommended for other fish species such as catfish, and the conditions to optimize the level of that ingredient to improve growth performance.

The present article test to analyze the present state of the fishing in the Ndjale lake in order to take out again the positive and negative points capable to allow the different actors intervening in this sector to get the necessary information capable to serve to a possible improvement of this economic circuit. While referring to the code of fishing and the aquaculture in RD - Congo, the document achieved by the FAO and to the practices of fishing that achieve themselves in the Ndjale lake by the fishers of this entity and the contraptions of fishing used, he/it observes himself/itself on the subject a deficiency of the state of fishing on land; the management of the lake is opaque and is held by the customary power where only the natives can reach there and especially fish captured at the time of the fishing are not weighed, and without any surveillance, the price of fish varies according to customer's type in presence and no regulation is to return it - you. The fishing is artisanal of subsistence and at a time commercial, the men are the main actors; the various nets, the cannons and the palangres are the materials the more used by the fishers, the transportation often gets used at bicycle and by motorcycles; dragging a lot of mediators between the fishers and the consumers, from where him ya place to organize this circuit in order to make this activity more profitable.

In the setting of this article on the inventory of the Ichtyofaune of the Ndjale lake that pulls his/her/its specificity of the surge of the Kasuku river in territory from kibombo in the Maniema;, the investigatings have been led during the artisanal fishing while using the nets, the cannons and the palangres as contraptions of fishing in two stations: Dongo and Gabon during one year of April 2018 to March 2019. Them TO the descended of our investigatings on the Ichtyofaune of the Ndjale lake in the Maniema; he/it clears himself/itself that this lake contains 4 orders, 15 families, 20 kinds and 20 species of which most abundant in term of strength by decreasing order are: the Mormyridaes represented by (Marcusenius morii; and Gnatonemus sp); the Mockokidaes represented by (Synodontis sp), lesClaroteidae (Chrysichtys nigodigitatus), the Clariidaes (Clarias Cichlidae gariepinus),les (Hemichromus elongatus and Tilapia sp) and the Channidaes (Parachanna obscura). The specific wealth is of 20 recorded species, the équitabilité inter station is of 0 ,69 for Dongo against 0,74 to Gabon. These results on the whole, confirm that the biodiversity of the Ndjale lake is raised and rich of the species. To the total 41825 individuals have been captured in the two retained stations, of which 41,9% to Dongos and 58 ,1% in Gabon; - The season of rainy appears more favorable to the capture and present more of strength of fish captured that the dry season for all disconcerted species 63% against 37% of the total strength; - The weights vary from a species to the other of Heterotis niloticus 5grs to 1950grs, but the average is in the interval of 7 to 1650 grs, - The species having presented the most elevated weights are in the decreasing order: the Chrysichthyses nigrodigitatus (1650 grs), Citharinus gibbosus(900grs), (890 grs), Mormyrops deliciosus (640grs), Parachanna obscura (600grs), Polypterus spp and Malapterirus bennenensis (460grs) each and the Distichodus fasciolatus (415grs). All other present the weakest weights lower to 200 gr in spite of their important strengths in the two stations and in all season. - The size: the variation goes from 35 to 670 mm and the middle values of the size are understood on the whole between 46mm and 435mm. The Chrysichthys presents the most elevated size (435mm); follow-up of Polypterus sp (360mm), Malapterirus bennenensis (345mm), Parachanna obscura (260mm), Mormyrops deliciosus (232mm), Hepsetus adoe (210 mm) and Citharinus gibbosus (206mm). The other also presented some sizes in spite of their strengths very important. While comparing the weight and the sizes, he/it notices himself/itself that these two factors are not proportional for all captured species. - Concerning the spatio-temporal distribution, he/it clears himself/itself that the species are present all 'year in all two stations, but to very different frequencies following the months of the year; and the rarest species are: Mormyrops deliciousus, during every month of the year, and absent in December; The Auchenoglamus punctatus: especially appears as rare during several months of the year in the Dongo station; - The Heterotis niloticus, is all year round less present to the Gabon station that in the Dongo station; - The Polypterus sp: is rare and sometimes absent during some months of the year (January, fervier and March) especially to the Gabon station; - The Malapterirus very rare bennenensis in Dongo but more frequent to the Gabon station; - The Distichodus fasciolatus, present all year round but, less represented in term of strength; and the Schilbe sp: absent all year round in Dongo but rarely present to the Gabon station and represent the weakest efficient of the all species counted in the Ndjale lake.

This Paper studies the flexural strength and deflection of Sawdust–Quarry dust–Plywood Composite Slab. The materials used include Cement, Quarry dust, Sawdust, Plywood, Nails, and water. Laboratory test were carried out on this composite according to standard test procedures. They were tested for flexural strength and deflection. It was observed that for a 1200mm width of slab with thicknesses between 100mm to 175mm and Plywood Thickness 12.5mm to 20mm, the average flexural strength of this composite slab ranges from 1.32MPa to 3.30MPa. The deflection slab ranges from 106mm to 33mm while those of plain composite slab ranges from 20mm to 5mm