Ladoke Akintola University of Technology

About: Ladoke Akintola University of Technology is a education organization based out in Ogbomoso, Nigeria. It is known for research contribution in the topics: Population & Adsorption. The organization has 2786 authors who have published 3066 publications receiving 36850 citations. The organization is also known as: Oyo State University of Technology & LAUTECH.

Tailoring of energy levels in (2Z)-2-cyano-2-[2-[(E)-2-[2-[(E)-2-(p-tolyl)vinyl]thieno[3,2-b]thiophen-5-yl]vinyl]pyran-4-ylidene]acetic acid derivatives via conjugate bridge and fluorination of acceptor units for effective D–π–A dye-sensitized solar cells: DFT–TDDFT approach

Abstract: Density functional theory (DFT) was employed to investigate the role of fused thiophene and bridged thiophene π-linkers as well as acceptor unit fluorination in modifying the properties of dye sensitizers for dye-sensitized solar cells (DSSCs). A series of novel (2Z)-2-cyano-2-[2-[(E)-2-[2-[(E)-2-(p-tolyl)vinyl]thieno[3,2-b]thiophen-5-yl]vinyl]pyran-4-ylidene]acetic acid derivatives were simulated using DFT and time-dependent density functional theory to calculate their electronic and optical properties, population analysis, global reactivity index and light harvesting efficiency. The results showed that dyes with bridged thiophene π-linker have narrower energy bandgap (E g) and longer absorption wavelength (λ max) than those with fused thiophene π-linker. Also, fluorination of the acceptor unit of the dyes enhanced the electron accepting ability of 2-cyano-2-pyran-4-ylidene-acetic acid by lowering the lowest unoccupied molecular orbital (LUMO) energy, which leads to lower E g, lower chemical hardness (η), and longer wavelength. Therefore, incorporation of fluorine atoms at the acceptor unit makes the conduction-band potential more favorable, leading to effective charge separation and charge transfer between donor and acceptor.

Prevalence of Rhesus D-negative blood type and the challenges of Rhesus D immunoprophylaxis among obstetric population in Ogbomoso, Southwestern Nigeria

Abstract: Background: Rhesus incompatibility could pose a major problem in pregnancy, and it could be the cause of obstetric failure in a handful of women. Implementation of programs for antenatal and postnatal (Rhesus D) RhD immune globulin prophylaxis has led to a significant reduction in the frequency of maternal RhD alloimmunization and associated fetal and neonatal complications. Aims: To determine the prevalence of RhD negative among the pregnant population attending the antenatal clinic of a young tertiary health institution in Ogbomoso, a semi-urban town in southwestern Nigeria, and also the challenges faced by this sub-population of pregnant women. Materials and Methods: A retrospective review of the antenatal and labour records of obstetric patient attending Ladoke Akintola University of Technology Teaching Hospital (LTH), Ogbomoso, Nigeria. Variables were expressed as percentages. Result: Of the 596 booked patient who had their blood group systems determined, 563 women (94.5%) were RhD-positive, and 33(5.5%) women were RhD-negative. Almost 50% of the Rh-negative pregnant women were primipara. Twenty-three (69.7%) of the study population had a previous delivery or abortion, but only 9 (39.1%) of these had the Rhesus anti-D immunoglobulin following the delivery or the abortion. One of the RhD-negative women had been sensitized to the RhD positive antigen from the previous delivery at the time of booking the index pregnancy. Of the study population that delivered in our facility, only 11 (33.3%) received the anti-D immunoglobulin after the delivery, and financial inability to purchase the anti-D immunoglobulin was a major reason for refusing the immunoprophylaxis. Conclusion: Although the prevalence of RhD negative still remains low, and the rate of Rh-immunoprophylaxis remains quite low in our obstetric population, the risk of haemolytic disease of the newborn with its attendant perinatal morbidity and mortality is real in our community. The anti-D immunoglobulin should be made available and affordable.

Pattern of paediatric dermatoses at dermatology clinics in Ile-Ife and Ilesha, Nigeria

Abstract: Background: In developing countries, skin diseases are one of the most common causes of morbidity.Aim: A prospective descriptive study was conducted to determine the pattern of skin diseases in childhood and adolescents presenting to the outpatient dermatology clinics of Obafemi Awolowo University Teaching Hospitals Complex at Ile-Ife and Ilesha, Osun State.Methods: Patients aged 2 weeks to 19 years attending the clinics between October 2009 and September 2012 were included.Results: A total of 491 dermatoses were recorded in 441 patients. There were 244 (49.6%) males. Dermatophyte infections (17.1%), papular urticaria (6.7%), atopic dermatitis (6.3%), vitiligo (5.3%), acne (4.7%) and viral warts (3.7%) were the most frequent dermatoses. Skin infections and infestations, mostly dermatophyte infections and viral warts, accounted for 57.6% of the skin conditions. Of the non-infectious diseases, papular urticaria and atopic dermatitis were the most common. Dermatophyte infections were the most prevalent in ch...

Development and quality evaluation of non‐alcoholic beverages from maize based products

Abstract: Purpose – This paper sets out to focus on the utilization of the locally available raw material to develop an acceptable and high quality non‐alcoholic beverage in Nigeria.Design/methodology/approach – Maize‐based non‐alcoholic beverages were produced from either plain maize powder or combinations of maize powder and mango or soybean flour. Plain and fruit or soy‐ fortified maize powders were analyzed using standard methods for chemical composition, while total solid, sediment height, pH, titratable acidity, storage stability and microbial load were determined on the formulated beverage products. Taste panel evaluation was conducted to evaluate the acceptability of the products.Findings – While the protein, fat and ash contents of plain maize powder were 5.69, 5.95 and 0.35 per cent respectively, there was minimal enhancement with fruit addition. However, with 10 per cent soybean addition significant improvement over the unfortified sample in protein (14.62 per cent), fat (10.64 per cent) and ash (0.96 pe...

Classical optimization of process variables in the treatment of real textile wastewater using clinoptilolite

Abstract: Industrial wastewater has often shown to pose a serious environmental threat if not properly treated before discharges. In a similar vein, textile wastewater may degenerate the environment due to the high content of chemical substances, suspended solids and a very conspicuous intense color among other things. An attempt has therefore been made in this study to classically optimize the removal of color, suspended solids (SS) and chemical oxygen demand (COD) using natural clinoptilolite (CPL). By applying 8 g of CPL of (75–250) μm particle sizes, at a low and acidic pH of 2–3, for 100 min contact time and agitation of reaction at 150 rpm, the pollutant removals were: 89% of color, 90% of SS and 79% of COD. However, a very negligible increase in color, only up to 90% (i.e., less than 1%), but a reasonable removal in SS (up to 96%) was obtained when the media dosage was increased to 10 g. The kinetics of the adsorption of pollutants was studied.