Archives-December  

The effects of aqueous leaf root and stem extracts of different concentrations (2.5%, 5% and 7.5%) of plant parts of Bahunia racemose Lam Common deciduous tree from ‘ Garbhagiri hills of pathardi Tahsil ( longitude19o 09’N, laditude 750 10’E) were tested on germination and seedling growth of Raphanus sativus L( Variety- Japani) Family Brassicaceae; Bahunia racemose Lam on germination and seedling growth of Raphanus sativus L., variety Japani, Leaf extract of Bahunia shows inhibition was not concentration co-related while stem and Root extract shows inhibition at higher concentration and promotion at lower concentration’ Data were analyzed by appropriate statistical method.

Objective: Biotene mouthwash is an antimicrobial agent used in prevention of periodontal disease, xerostomia and halitosis. it seems that no study has been conducted to evaluate its effect on prevention of alveolar osteitis(AO) .So the purpose of the study is to evaluate effective of biotene mouthwash on prevention of alveolar osteitis after extraction of permanent mandibular teeth and to investigate association of risk factors of AO with incidence of AO. Methods and materials: This randomized double blind clinical trial was conducted in oral and maxillofacial surgery department of Tabriz dental faculty. In case group (n=192), the patients received Biotene mouthwash and used it, three times a day for one week. Control group (n=197) received 0.09% sterile saline solution and used it similar to case group. The patients with the symptoms of AO were recalled for the diagnosis of alveolar osetitis on the third postoperative day. Results: In the experimental group 6 ( 3.1%) of AO incidence was found. While in the control group, 17 (8.6%) of AO was observed. The reduction in the incidence of AO in case group was statistically significant in comparison with control group p=0.03, p<0.05 for fisher`s exact test (Chi-square test). smoking was a variables that has significant relation to increased rate of AO. p=0.235, p<0.05. Conclusion: It was concluded that the use of Biotene mouthwash can be effective in reducing the incidence of dry socket after extraction of mandibular teeth. Smoking was significantly associated with the increased incidence of alveolar osteitis.

Normal concrete was prepared with a water-cement ratio of 0.50. cube specimens were cast for testing the compressive strength at 7 and 28 days of curing respectively using three curing methods namely immersion, sprinkling and Plastic sheeting, curing to cure the cube specimens until the day of testing. Test results indicates that water curing (WAC) as well as sprinkling (spraying) curing provided much better results than membrane (Plastic Sheeting) method of curing. The rate of drying was significant when the specimens were subjected to membrane (Plastic sheeting) method of curing. This thus hampered the hydration process and thus affected the compressive strength property of the hardened concrete. The overall finding of this study suggests that concrete should be cured by water curing to achieve a better compressive strength.

Education is bound to be affected if safety and security concerns of students are not addressed fully. With the emergence of the need to present ideas, views and opinions, students usually engage in unruly behavior aimed at seeking attention from the management to listen to them. The objective of the study was to determine how Students discipline affect safety measures in public boarding secondary schools in Trans- Nzoia County, Kenya. The study used descriptive survey research design. The study targeted 40 principals, 754 teachers, 22,562 students and 84 security officers in 40 public boarding secondary schools in Trans-Nzoia County. Simple random sampling and purposive sampling procedure were used to select boarding secondary schools. The total sample was 403 respondents which comprised of 20 principals, 143 teachers, 220 students and 20 security officers. Questionnaires, interview schedule, document analysis, observation checklist and focus groups were used as data collection instruments. Data was analysed using descriptive statistical techniques that were frequencies and percentages. Data was presented in tables and charts. The student indiscipline was a safety threat to other students. The common indiscipline cases were theft, sneaking, drug abuse and fires. Drugs and substance abuse played a major role in influencing indiscipline in secondary schools. This study recommends that teachers under the supervision of the principals should conduct regular impromptu search of the students’ items and the school facilities in order to discover security gaps that need to be sealed in the schools. The students, teachers, security officers and any other stakeholders should be sensitized on the safety rules.

The effect of fly ash additions on the mechanical properties of ceramic tile composition has been investigated. Fly ash addition in the range of 0-30wt% (Class-A) and 0-30wt% (Class-B) have been added into the tile body composition, wet milled, spray dried,shaped and fired at different temperatures (900, 1000,1050 and 1100 C). The MOR strength improved with increasing fly ash content and reached maximum when 30wt% (Class-A) and 20wt% (Class-B) fly ash used, and with greater additions it decreased. A linear correlation between strength development and Mullite formation was found. The tile with 30wt% fly ash (Class-A) and 20wt% (Class-B) have improved bending strength and have lowest porosities. The effects of fly ash incorporation on the mechanical properties of ceramic tiles and found that a small amount of fly ash addition improves the strength of the ceramic tiles.

Load balancing using clustering can increase network scalability. This paper attempting to apply efficient techniques of load, energy and security such that network life can be increased with security and also its reliability. Continuous aggregation is required in sensor applications to obtain the temporal variation information of aggregates. It helps the users to understand how the environment changes over time and track real time measurements for trend analysis. Due to the high frequency and the long period of a continuous aggregation in every epoch, the false temporal variation pattern would incur a great communication cost. In this paper, we propose a clustering technique which will balance the load among the cluster by using some backup nodes. In the continuous aggregation, the attacker could manipulate a series of aggregation results through compromised nodes to fabricate false temporal variation patterns of the aggregates .We detect and verify a false temporal variations pattern by checking only a small part of aggregation results to reduces a verification cost. A sampling based approach is used to check the aggregation results and we also proposed a security mechanisms to protect the sampling process.

This project proposes a real time fuzzy assisted particle swarm optimization (PSO) based energy management strategy for the multi-source electric vehicles (EVs). In pure EVs the major on-board energy source is the battery which is generally accompanied with other sources such as fuel cell (FC), ultra capacitor (UC) to improve its life time. The energy management algorithm which is formulated as an optimization problem in this project provides optimum sharing of energy sources to meet the vehicle load requirement at every instant without any prior knowledge about the driving profile. The proposed algorithm is simple, efficient and can be easily implemented in a low cost embedded system.

Researches on cassava brown streak diseasis (CBSD) were conducted in North Kivu province. The study aimed to determine incidence and severity of cassava brown streak diseasis, evaluate whitefly abundance and infection origin. Incidence was evaluated using the proportion of damaged cassava plants by the disease and the severity was determined on leaves and stems using score ranging from 1 to 5. Whiteflies counting were done on the five first apical leaves. Infection origin was determined considering symptom appearence apical leaves (origin from whitefly) and on lower leaves (origin from infected cutting). Results show that cassava brown streak diseas is in really present in north Kivu province with incidence reaching 26% and a severity of score 2 from the entire surveyed district. Incidence ranged from 2% with a severity of score 2 in Nyiragongo district up to 39% with a score of 2 in both Beni and Rutshuru district. Observed symptom proportions on stems were higher in Rutshuru (39%) but lower in Nyiragongo (2%). Whitefly population was high in Nyiragongo (37 whiteflies/cassava plant) but lower in Beni (5 whiteflies/cassava plant). Infection proportion due to whiteflies was of 1% in Rutshuru and 13 % in Masisi, while those from infected cutting as planting materials were of 4 % in Rutshuru and 47 % in Lubero

Class room management is a tool to set learning environment. Well managed class rooms make instruction easy and learning must occur. Study was designed to investigate the essentials of classroom management at pre- primary level by using stratified random sampling technique thirty teachers were selected as sample of the study. Results indicate classroom management is a complicated activity which needs a lot of effort it never happens by chance. Physical material need to be set in such a way that traffic in class room will not be effected. Conflicts and misbehavior should also address. Effective teaching strategies enable teacher to become learning facilitator at per-primary level.

This paper estimated the Overpressure magnitudes as well as the resulting “required mud weights” for safe drilling in three Niger Delta Wells (PNW1, WSW2, and WSE1) .PNW1 revealed maximum overpressure magnitude at the depth of 16,000ft with pressure value of 13,120psig. WSW2 showed maximum overpressure magnitude at the depth of 11,600ft with pressure value of 14,500psig while WSE1 revealed an overpressure value of 12,050psig at the depth of 10,700ft considered as depth of maximum pressure. These were all derived based on plots of dc-exponent versus depth; the required mud weight for safe drilling especially at the maximum overpressure were as well computed. PNW1 is located at about 77.2km, N31.6oW of Port Harcourt, WSW2 is located at about 65.2km, S61oW of Warri, while WSE1 is located around 30.3km, S14.6oE of Warri; these towns are all in Nigeria. This method can stand alone as an Overpressure prediction and estimation tool since the parameters it requires are obtained while drilling.