https://repository.uob.edu.ly/handle/123456789/1294 2026-09-14T13:51:56Z https://repository.uob.edu.ly/handle/123456789/1306 Epidemiological and clinical profile of congenital malformations in Benghazi Pediatric Hospital Alkarshouf, Yasmeenah S. H; Greiw, Azza E. H; El Misallati, Abd Alsalam Objectives: The objectives were to assess the nature and the frequency of congenital malformations among infants and children who were admitted to Benghazi pediatric hospital and to study the associated maternal and neonatal risk factors. Patients and methods: A cross-sectional study design was used for this study. It included infants and children aged (0-16 yrs.) who were admitted to Benghazi Children Hospital and who were following the genetic clinic, during the period of March 2016 to March 2017. These cases had dysmorphic features and multiple congenital malformations. A record sheet was used to collect the required data from cases. Results: The total number of patients was 81 children, 51.85% were females, 48.15% were males and infants represented 62%. Cases with a history of consanguineous marriage represented 28.40%. Equal proportions of mothers (1.23%) had a history of diabetes, epilepsy and cardiomyopathy. Nearly a quarter of cases, (24.69%) were low birth weight. Prevalence of congenital malformations (CMs) according to organs were; CVS (50.62%), musculoskeletal (44.44%), eye (24.7%), limb defect (17.3%), GIT (14.8%), ear (14.8%), CNS (11.11%), urogenital (external & internal)(11%), cleft lip & palate (9.9%) and Trisomy 21 syndrome (48.1%). Trisomy 21 syndrome have a high frequency of CHD compared to other syndromes; 67.9% had CHD, P=.01. Most cases (90%) died within the first year of life, p=.002. Twenty-six percent of the studied population died during the study period. Conclusion: Most children with CMs and chromosomal abnormalities died within the first year of life. There is a limitation of screening tools, which could lead to imprecise genetic counseling. CM is a significant cause of morbidity and admission. The highest prevalence of CMs was CVS. Trisomy 21 syndrome was the most prevalent chromosomal abnormalities; these cases were at more risk to have CHD compared to other syndromes. There is a shortage of medical services, which applied as segmental services. 2019-12-31T00:00:00Z https://repository.uob.edu.ly/handle/123456789/1305 On 𝑛��-adic Algebra Bennour, Nabila M; Alzubaidy, Kahtan H This paper studies n-adic algebras with terms. Deduction is also done in these algebras. 2019-12-30T00:00:00Z https://repository.uob.edu.ly/handle/123456789/1304 Quaternary Beach Dunes in Daryanah Area NW of Al Jabal al Akhdar, NE Libya Albosayfee, Asseil M; Ashahomi, Khalifa A The present study has shown that the Quaternary beach dunes of Daryanah area are composed of four distinctive lithological facies, these are the planer cross bed calcarenite facies, lenticular calcarenite facies, massive calcarenite, and alluvial deposits facies. The planer cross-bedding and the lenticular bedding are interpreted to reflect aeolian deposits. The massive calcarenite is thought to have been accumulated in shallow marine. The interbedded calcarenites and alluvial deposits interpreted to represent cycles of prograding alluvial system associated with Eustatic sea-level changes. The paleo-winds in the area were mostly unimodal blowing between 290and 330, which were influenced by the escarpment position and orientation. The age of these deposits has been attributed to Early Pleistocene (Calabrian) based on its occurrence above the sea level and correlation with previous studies. 2019-12-30T00:00:00Z https://repository.uob.edu.ly/handle/123456789/1303 Assessment of brine disposal from Zliten desalination plant in marine environment Algoul, Salah M; Algish, Abdalbaset M; Musbah, Abdalhamed A Desalination plants cause environmental pollution of local effects. Disposal of desalination effluents is considered as a serious environmental dilemma. The concentration of brine varies from 50 to 75 g/L and has a much higher density than seawater and consequently tends to fall on the seafloor near the brine outfall outlet (plume effect), therefore, creating a very salty layer that can have a negative impacts on the flora and the marine life and any related human activities. In this work, we present a case study on the environmental impacts of the effluents from the MSF seawater desalination plant into a coastal and marine ecosystem of Zliten-Libya. Samples were collected from the reject channel and therefore many parameters were measured such as PH, Temperature, Salinity, Conductivity and other parameters related to seawater and produced water have been investigated too. The results showed that the pH is slightly lower than the seawater; the values range from 6.1 to 7.8. The salinity of brine discharge was found 57113 ppm compared with 35000 ppm for the seawater. The TDS of brine discharge registered 56700mg/l in comparison with 32000 mg/l for seawater, Reject brines were around 10-14C higher than the ambient seawater temperature, which causes a negative impact on marine ecosystems 2019-12-28T00:00:00Z https://repository.uob.edu.ly/handle/123456789/1302 Pregnancy outcomes of placenta Previa at Benghazi-Libya 2012 - 2013 Emjawer, Fawzia Saleh; Barakat Ben Sauod, Ekram A; Eshgaifa, Mohammed Mansour Introduction: Placenta Previa (PP) is associated with high demands on health care resources due to maternal and fetal morbidity and mortality. Complications include the potential for severe bleeding and preterm birth, as well as the need for cesarean delivery. The objective of this study was to determine maternal & fetal complications of placenta previa according to placental location. A case–series study was conducted on pregnant women diagnosed as placenta previa by ultrasonography and delivered at Al-Jamhoria Hospital, medical records of women were reviewed from medical records retrospectively and placental position as documented in the medical record of the women, placental location. Results & conclusion: Most of the cases (60%) aged between 31-40 years. The posterior placenta was constituted to 51.2%, while anterior 48.8%, gravity distribution was nearly the same in anterior and posterior. placenta previa was in patients with parity ≥2 in 65 % for both anterior and posterior, the difference was not statistically significant. The majority of cases with placenta previa had no previous history of abortion, 66.7% of anterior position and 73.2% of the posterior position. Placenta accreta and of history abortion were not statistically significant. Hysterectomy is statistical significant p=0.021. One patient died due to pulmonary embolism. Regarding the position of babies, all babies in anterior position were stable but those in posterior 2.4% were intra uterine fetal death (IUFD) and 2.4 % were serious. In terms of the condition of the babies, 20 % of them were premature. We recommended further large sample size studies to verify these findings, and to determine whether pregnancies with the anterior or posterior placenta may need more intensive care monitoring for mothers and babies. 2019-12-28T00:00:00Z https://repository.uob.edu.ly/handle/123456789/1301 Gestational diabetes effect on the histological structure of human Placenta Ali, Halima A; Sati, Ali I; Mansur, Hoda S; Muftah, Saleh S; Amghaiab, Iman E Many studies have been carried on the placenta of diabetic mothers to determine the changes in placenta structure as an adaptation to the diabetic environment. These changes are one of the detrimental fetal outcomes regardless of the good care of diabetic women. The aim of this study is to recognize the histological changes in the placenta of pregnant women with gestational diabetes and the effect of these changes on fetal and neonatal mortality and morbidity. The study was done on 30 placentae from diagnosed pregnant women with gestational diabetes treated with insulin. The control group involves 30 placentae obtained from normal healthy women. Both groups of placentae were full-term and post caesarean delivery. The biopsies of the placentae were collected from the central and peripheral regions and treated to obtain paraffin sections, and then stained with Masson’s Trichrome stain. Under a light microscope, the sections were examined and photographed by using a digital camera. An increase in chorionic villi vasculature and a number of young villi were observed in the placentae of diabetic group. These changes could clarify the increase of morbidity and mortality in fetal and neonate associated with diabetes. On the other hand, these histological changes could be modifying changes as it has been shown that functions of the placenta were not severely distressed, as a result, of diabetes, as there are compensative adjusting responses. 2019-12-28T00:00:00Z https://repository.uob.edu.ly/handle/123456789/1300 Refined saddlepoint approximations for the normalizing constant of the complex Bingham quartic distribution: A change of variable approach Ganeiber, Asaad M The complex Bingham quartic (CBQ) distribution is defined on the unit complex sphere in ℂ 𝑘−1 and it is relevant for the statistical shape analysis of a 𝑘-point landmark data in 2D. This extended the Fisher distribution on the unit spherical shape space 𝑆 2 (1/2). The complex Bingham quartic (CBQ) distribution provides suitable shape parameters to comprise anisotropy. Under high concentrations, it looks like a multivariate Gaussian normal distribution but the main drawback of this planar shape distribution is that its normalizing constant does not have a simple closed explicit form representation. The present paper provides a modified approximation procedure for the indeterminate normalizing constant of the CBQ distribution based on saddlepoint approximations with a change of variable scheme. The modified saddlepoint approximations under a change of variable seem more precise as compared with the saddlepoint approximations without a change of variable approach 2019-12-28T00:00:00Z https://repository.uob.edu.ly/handle/123456789/1299 An adjusted scale binomial Beta H-Likelihood estimation method for unbalanced clustered binary response models El-Saeiti, Intesar N In practice, clustered binary responses are very prevalent, where binary data is naturally grouped by sampling techniques. Clusters are often unequal in size in some areas of studies, such as medicine, education and others. The most suitable models for binary data clusters of unbalanced sizes are the Hierarchical Generalized Linear Model (HGLM), where the random term over-dispersion counts; and it is k known as clustered binary data. Current techniques for estimating parameters in (HGLM) are many, but these techniques do not allow over dispersion to be distinct from cluster to cluster. Where clustered binary data resulted in over-variation, that reasonable to conclude the unequal size of clustered binary data may have been distinct variations for distinct clusters. By ignoring the chance of shifting over variability between clusters, test statistics may be inflated in the Type I error rates. In this paper, the binomial beta (BB) (HGLM) method has been altered to account for distinct variations across separate clusters. In order to explore whether the Adjusted Scale Binomial Beta (ASBB) method is more suitable than the (BB) technique for dealing with over-dispersion for unequal cluster binary data models, the author was used simulation, the adjusted method was compared to the original "existing" technique in terms of, Type I error rate, estimator standard errors and power. (ASBB) h-likelihood “adjusted” method was comparable to BB "existing" technique, as it has a less standard error and the Type I error was acceptable. Moreover, Type I error inflated in “exist method” (BB) h-likelihood. 2019-10-25T00:00:00Z https://repository.uob.edu.ly/handle/123456789/1298 Analysis and diversity of family Fabaceae in Flora of Libya Ali, Rania F. M; Dakeel, Ensaf H; Al-Wishish, Fatma M Fabaceae is one of the most diverse families in the world, known for its environmental and economic potential. The total number of species is 216 and 52 genera. It has many traditional uses, including 37 medicinal species, and 33 species of poisonous, and ornamental represented by 9 species, all the taxa belongs to three subfamilies (Papilionoideae, Caesalpinioideae and Cercidoideae) in Libya. The life form characterized by a high proportion of Therophytes (annuals) with 66.7% followed by Hemicryptophytes with 15.3%, Phanerophytes represented by Keywords: 11.1% and Chamaephytes with 6.9% 2019-10-21T00:00:00Z https://repository.uob.edu.ly/handle/123456789/1297 Synthesis and physical characterization of oleyl oleate using acidic heterogeneous catalyst sodium hydrogen sulfate NaHSO4 Abdelsalama, Mansour A; Al-arafi, Naowara M; Bin Salimon, Jumat; Gaith, Abdullah H The esterification of oleic acid with oleyl alcohol under mild conditions and without any additional organic solvent was studied. High yield (90%) is obtained at optimized conditions 8 h, 130 °C and catalytic amount NaHSO4 (10%). Analysis of the product of the reaction using FTIR, 1H and 13C-NMR showed the presence of oleyl oleate. 2019-10-10T00:00:00Z https://repository.uob.edu.ly/handle/123456789/1296 Optimization of the separation of benzoic acid and sulphanilamide by capillary zone electrophoresis (CZE) Kashbor, Mohamed M Sulfonamide and Benzoic acid play a significant role regarding the treatment and inhibition of bacteria and its side effect on human health. Due to this, different analytical techniques with various adjustments to their parameters have been highlighted as an important challenge that should be tested in order to achieve the most efficient separation process, and thus to enable both qualitative and quantitative measurements of these substances. Therefore, the separation of the above-named compounds had been conducted by capillary zone electrophoresis (CZE) technique. Moreover, the comparison between both compounds in terms of organic, buffer and voltage at 25kV, 20kV had was achieved. Hence, this work was performed to determine the optimum experimental conditions of capillary voltage, with keeping ionic strength of buffer and percentage of organic modifier constant due to experimental time constraints. 2019-10-03T00:00:00Z https://repository.uob.edu.ly/handle/123456789/1295 Assessment of mother’s awareness regarding indoor asthma triggers Alfaituri, Asma H; Gadalla, Salah A; Alkhader, Anas A; Shembesh, Aya R; Elshekhi, Haneen M; Elmothabal, Sanad F An indoor air pollutant is a very real and dangerous thing because is far more than outdoor air. A pollutant is any harmful contaminant in the air; therefore, indoor air pollution is when pollutant from substance contaminate the air indoors, such as gas, particles, rectifiers, disinfectants, tobacco smoke, spices, perfumes, and fungi that are inside the house. The objective of this study is to assess mothers' knowledge about indoor asthma triggers and their impacts on children's health. The researcher prepared a questionnaire for mothers and distributed it to children in schools for interviews. The study used children and their mothers, asthma triggers and mothers' knowledge. The cross-sectional study started in January to June 2017 descriptive design was used: population of the study included all students at Othman Ben Afan elementary school in Benghazi city. 42% of mothers do not use incense every day. Most of the mothers who answered the questionnaire read precautions posted on the label of detergent before using and 25% of mothers whose children with allergic asthma. Most of the mothers use ventilation as a control measure. The results showed a high percentage of mothers have knowledge about indoor pollutants. Besides, moderate percentages of mothers have been spraying pesticides indoors. 2019-10-02T00:00:00Z