Open Access Original Research Article

Drug Abuse and Academic Performance: A Study of Gender Variation among Adolescent Students

Victor Moses, Godwin Augustina, Isah Rahama

Advances in Research, Page 1-7
DOI: 10.9734/AIR/2018/40208

As elsewhere in the world, youth in Nigeria engage in behaviours that are potentially dangerous. The extent of drug abuse among the young is a source of considerable concern. This article presents the results of a study, which sought to determine whether drug abuse among young Nigerian women and men affected their academic performance. Three hundred and seventy students (male=227 and female= 143, mean age; 16.34±.23) participated in the survey. Of this number, 141 students were identified as current drug abusers. Results from current users showed a 38.1% prevalence rate of drug abuse. Reported drug abuse was found to influence students' academic performance negatively, χ2 (3) = 41.21, p < 0.001. Gender was found to be a significant predictor of reported drug abuse, χ2 (3) = 33.76, p < 0.001 with males reporting a greater degree of drug abuse. The study concludes that drug abuse predicts poor academic performance and calls for increased efforts to control this epidemic in young Nigerian men and women.

Open Access Original Research Article

Fungal Contamination of Table Eggs Sold in Khartoum State, Sudan

Elham Abdelbasit Suleiman, Naglaa Abdelbasit Suleiman

Advances in Research, Page 1-6
DOI: 10.9734/AIR/2018/39876

Aim: The current study was conducted to assess fungal contamination of table eggs sold in Khartoum State, Sudan.

Study Design: This descriptive evaluation study was conducted at Mycology Department, Central Veterinary Research Laboratory, Khartoum State, Sudan over 6-month duration.

Methodology: Egg samples (shell and egg contents) were examined directly using lacto phenol cotton blue slide mount technique. The culture of samples in Sabouraud Dextrose Agar (SDA) supplemented with antibiotic was carried out.  Identification of the isolates was based on their macro and microscopic morphological characteristics.

Results: Fungal colony was obviously seen on egg membrane and revealed as Aspergillus flavus on direct microscopic examination. Whereas A. flavus and A. niger hyphae were detected on culture from both egg shell and contents.

Conclusion: Isolation of A. flavus and A. niger from both egg shell and content by conventional method. The obtained results report the occurrence of A. flavus in table eggs sold in Khartoum state, Sudan.

 

Open Access Original Research Article

Study of Gene Action and Heterosis Effects of Different Genotypes for Yield and Yield Attributing Traits in Maize (Zea mays L.)

R. A. Gami, P. C. Patel, M. P. Patel, S. M. Chaudhary, N. V. Soni

Advances in Research, Page 1-7
DOI: 10.9734/AIR/2018/40856

A study of Line × Tester analysis involving 8 lines and 5 tester of yellow maize was carried out to identify high heterotic crosses and their relationship in terms of general and specific combining ability effects (gca and sca) for yield and its component traits. Analysis of variance exhibited highly significant difference among all the parents for different traits under study. The ratio of σ2gca2sca was less than unity there by indicating the preponderance of non-additive gene action in the expression of majority of the characters studied. The line Z 488-4 and tester BLD 47 were identified as most promising parents due to having good general combining ability for grain yield and several other yields contributing traits. Among the crosses, HYN-10-RN 235-270 × IC 328963 and BLD 254 × BLD 47 proved as good specific combiner for kernel yield per plant and its component traits while for earliness cross BLD 254 × IMR 53 were found good specific combiner. On the basis of heterosis cross Z 488-4 × IMR 53 and BLD 266 × BLD 47 was found superior for kernel yield per plant, ear yield per plant, days to tasselling, days to silking, days to dry husk, ear girth and 100 kernel weights. Therefore, these crosses need to be further evaluation for genotype x environment interaction over different seasons and or locations.

 

Open Access Original Research Article

Studying on Synthesis of Highly Luminescent Quantum Dots Based on Zinc and Their Application for Escherichia coli O157: H7 and Methicillin- Resistant Staphylococcus aureus Detection

Diem Thi Bui, Duy Khanh Pham, Xuan Truong Mai, Van Khiem Nguyen, Thanh Thao Bui, Ngoc Quyen Tran, Nguyen Thi Ngoc Nhi, Tai The Diep, Bich Thi Luong

Advances in Research, Page 1-8
DOI: 10.9734/AIR/2018/40715

The synthesis of highly luminescent quantum dots ZnSe/ZnS:Mn(5%)/ZnS và ZnSe:Ag(1%) in aqueous phase was studied. This synthetic method is for green chemistry. Silver and manganese are used as a dopant to increase photoluminescence quantum yields of obtained products. Mercaptopropionic acid (MPA) is used as a capping agent which is a sufficient bridge to combine the quantum dots and antibody, bacteria via protein or EDC (1-ethyl-3-(3-dimethylaminopropyl) carbodiimide hydrochloride). Escherichia coli O157: H7 and methicillin-resistant Staphylococcus aureus (E. coli O157: H7 and MRSA) are leading causes of food poisoning and they are also detected via luminescent signals. The results showed that the quantum dot complex was capable of detecting bacteria at 101 CFU / ml for 15 – 30 minutes. The specificity of the reaction is 100%. Optimal antibody concentration for detection of bacteria from 10 mg to 30 mg. Rapid detection of MRSA and E. coli O157: H7 on food and clinical samples are going on further test.

 

Open Access Original Research Article

Carbon Sequestration Potential of a Few Selected Tree Species in Coimbatore District, Tamil Nadu

M. Sangareswari @ Nagajothi, A. R. Manju hashini, A. Balasubramanian, B. Palanikumaran, D. Aswini

Advances in Research, Page 1-7
DOI: 10.9734/AIR/2018/39676

A study was conducted to know the carbon sequestration potential of few selected tree species at Forest College and Research Institute, Mettupalayam. 26 tree species were selected and categorized into different height class as 0-3 m, 3-6 m and 6-9 m from various institutions of Coimbatore. The growth parameters such as height, Diameter at Breast Height were recorded and estimated the biomass carbon. The calculated biomass was then converted into mass of carbon sequestered. These data allowed us to estimate the total mass of carbon sequestered. Maximum biomass accumulation was recorded in height class 6 m to 9 m found in Delonix regia (157.64 kg tree-1) and the minimum was recorded in Gmelina arborea (0.19 kg tree-1) in the height class 0-3 m.