University of Aden Journal of Natural and Applied Sciences

Distribution of lizards in Haifan District, Taiz Governorate – Yemen

2024-09-21T20:35:05+03:00

The study aims to explain the distribution of Lizards in Haifan District - Taiz Governorate - Republic of Yemen. During this study, 105 specimens of lizards were collected from 31 areas, belonging to the five zones in Haifan District. The lizards were injected with preservatives (ethanol 75% or formalin 10% depending on each sample), and immersed in plastic boxes containing the preservative, then the morphological characteristics of each sample were studied and classified based on approved references. The results showed the presence of 17 species of lizards in the study area, belonging to ten genera and eight families. Ten species of lizards were recorded for the first time in Taiz Governorate, regarding to nine genera belonging to eight different families.

On U–Trirecurrent Finsler Space

2024-09-21T20:51:37+03:00

In the present paper, we introduce a Finsler space F_n for which the hv - curvature tensor satisfies the trirecurrent property in sense of Cartan. The relationship between hv - curvature tensor \(U_{jkh}^i\) and Douglas tensor \(D_{jkh}^i\) has been studied. We obtain the necessary and sufficient condition for some tensors to be trirecurrent .Finally, the trirecurrent property in a projection on indicatrix with respect to Cartan connection has been studied.

Some Inequalities Concerning Maximum Modulus of Complex Polynomials with Restricted Zeros

2024-09-21T21:32:58+03:00

In this paper, certain new results concerning the maximum modulus of polynomials with restricted zeros are obtained. These estimates strengthen some well-known inequalities for polynomial due to Rivlin, Govil, Lal and others.

New Exact Solutions for Generalized of Combined with Negative Calogero-Bogoyavlenskii Schiff and Generalized Yu–Toda–Sassa–Fukuyama Equations

2022-09-10T14:47:52+03:00

In this paper, we present generalized model of combined Calogero-Bogoyavlenskii Schiff and negative-order Calogero-Bogoyavlenskii Schiff G(CBS-nCBS) equation and generalized Yu–Toda–Sassa–Fukuyama g(YTSF) equation. We apply the extended hyperbolic function method, to solve generalized models. Exact travelling wave solutions are obtained and expressed in terms of hyperbolic functions, trigonometric functions, rational functions solutions of these equations from the method with the aid of the computer program Maple.

On a new extension of extended (p,q) Beta function

2022-11-22T21:37:58+03:00

The main objective of this paper is to introduce a further extension of extended (p, q)-Beta function by considering product of two Mittag-Leffler functions in the kernel. We investigate various properties of this newly defined Beta function such as integral representations, summation formulas and Mellin transform. Further, some known and new relations for various forms of extended Beta functions are obtained as special cases of the main results.

A study on the Prescription Pattern of Antifungal Drugs in Aden-Yemen

2022-11-22T21:38:24+03:00

Background: Fungal infections are more common in tropical zones; they can be simple, complicated, or even fatal. Studying the prescribing pattern can help physicians provide rational medical care and appropriate patient compliance. The current study aimed to determine the prescription patterns of antifungals in three departments and the distribution of fungal disease to help in developing policies and stewardship in using antifungal medications.

Method: This cross-sectional study was conducted over 6 months from March to October 2023. Potential participants were approached in Governorate and private pharmacies, and dermatologic, gynecologic, and dental clinics.

Results: The total number of collected prescriptions was 250. The analysis of the demographic characteristics of the involved patients showed that about 166 (66.4%) of the patients were females and 84 (33.65%) were males. Most of the patients are in the age group (19-35 years). Most of the fungal infection was vulvovaginal candidiasis 64(25.6%), Tinea versicolor 38(15.2), Tinea cruris 30(12%), oral candidiasis 21 (8.4 %), Tinea corporis (8.4%) then Tinea pedis and skin candidiasis had equal number 19 (7.6%), followed by tinea capitis 12 (4.8%) and onychomycosis 12 (4.8%). The most prescribed oral medicines were Itraconazole 66 (26.4%), followed by Fluconazole 56 (22.4%), Terbinafine 28 (11.2%), Ketoconazole 29 (11.6%) and Griseofulvin 13 (5.2%). The topical medicines prescribed were as follows: Ketoconazole 98 (39.28%), Clotrimazole 46 (18.4 %), Terbinafine 36 (14.4%), and Miconazole 33 (16.4%). The majority of patients (75%) received a combination of topical and systemic oral therapy. While (25 %) were treated by only topical agents.

Elastic nail versus plate for treatment of single close fracture of femur shaft

2022-11-22T21:38:24+03:00

This study aims to describe the outcome of pediatric flexible nails versus plates for the treatment of femur fracture. We reviewed the medical records of 28 femur fractures in children treated with flexible nail insertion and 26 children treated with plate fixation from January 2017 to December 2019. The mean age of the children was 8.88 ± 1.86 years. Data were obtained from patient charts. Union of bones was found in all the operated children, 28 (51.9%) of the group flexible nails, while no union was found in 3 (5.6%) of the group plate with screws. Delay union was found in 5 (9.3%) of the plate with screws, while in the group of flexible nails was in 2 (3.7%). Malrotation was found in 2 (3.7%) of the flexible nails and in 1 (1.9%) in the plate and screw. Bursa was found only in the flexible nails with 7 (13%) (p = 0.007). Re-fracture was found only in the group of plates with screws with 5 (9.3%) (p = 0.021). The limbs were shortened only in 1 (1.9%) patient with flexible nails. Superficial infection was high in the group plate with screws group 4 (7.4%). Deep infection was found to be high among 3 (5.6%) of the group plate & screw. We conclude that flexible intramedullary nail fixation of fracture shaft femur in children is a very acceptable way of treatment and is associated with minimal complications.

Formulation and evaluation of medicated lozenges containing the solid dispersion of Clotrimazole /PEG 6000 for the treatment of oral candidiasis

2022-11-22T21:38:24+03:00

The study aimed to formulate Clotrimazole (CLM) as solid dispersion medicated lozenges with enhanced dissolution for treating oropharyngeal candidiasis. They are suitable for many patients and easy to administer. The study used the solvent evaporation method to prepare solid dispersions of CLM using polyethylene glycol 6000 and polyvinyl pyrrolidone at different drug-to-carrier weight ratios. The study found that PEG 6000, when used at a 1:1 weight ratio, significantly improved the dissolution of CLM. The results of the FTIR studies showed that the drug was dispersed within PEG 6000, and there was no drug interaction with the excipients used in medicated lozenge formulations. A 3²-factorial design was used to develop, optimize, and evaluate nine formulations of the solid dispersion of CLM/PEG 6000 medicated lozenges for improved therapeutic outcomes. We fabricated the lozenges using biocompatible polymeric gelling agents (chitosan, methyl cellulose, and sodium alginate) at three different levels (0.5, 1, and 1.5%). All the medicated lozenges were uniform in weight and drug content within USP limits, with complete drug release rates ranging from 10–20 minutes for chitosan and sodium alginate formulations, compared to 60 minutes for methyl cellulose. The results showed that the type of polymer and its concentration significantly impacted drug release. The optimized formulation, F-3, containing 1.5% CH, exhibited a drug release of 100.83% ±0.68 at the end of 10 minutes. It demonstrated significant antifungal activity against Candida albicans (p < 0.05), making it suitable for drug delivery in the oral cavity.

Fluid-Attenuated Inversion Recovery Sequence in MRI in Distinguishing Fluid Cyst from Tumor in the Brain

2022-11-22T21:37:57+03:00

Nuclear magnetic resonance (NMR) is a physical phenomenon used to investigate the characteristics of atomic nuclei. It is the absorption and emission of energy by nuclei in a magnetic field, which can offer extensive information on the structure, dynamics, reaction state, and chemical environment of molecules. Magnetic Resonance Imaging (MRI) is the safest imaging method. It gives a visual representation of human tissue without surgical intervention for clinical diagnosis. In this research, Fast Spin Echo (SE), Multi-Slice Spin Echo (MSSE), and Fluid Attenuated Inversion Recovery (FLAIR) sequences were used. The case under study is placed in an i-open permanent MRI system type in order to image a brain lesion. The obtained signals are encoded to fill k-space through the three stages, i.e., slice selection, phase encoding and frequency. The MRI-processed brain image is reconstructed by inverse Fourier transform in order to find the location of the cyst, and T1 weighted, T2 weighted, and FLAIR tests were performed to obtain three types of images. The images were compared with normal images in each type of applied sequence. Subsequently, the fluid signal was specifically attenuated in the targeted location to help distinguish between a tumor and fluid in the transverse relaxation time-weighted image. The signal was attenuated in the designated location, turned black, and appeared the color of free water, like cerebrospinal fluid, indicating that it was a fluid rather than a tumor. Consequently, a cyst fluid lesion is detected. Our study establishes a foundation for utilizing free fluid signal attenuation to differentiate between cyst fluid and tumors when other sequences fail to do the same.

Publishing Rules and Table of Contents

2024-09-21T20:21:56+03:00