Libyan Journal of Science & Technology

Epidemiological and clinical profile of congenital malformations in Benghazi Pediatric Hospital

2019-12-31T00:00:00Z

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.

On 𝑛��-adic Algebra

2019-12-30T00:00:00Z

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.

Quaternary Beach Dunes in Daryanah Area NW of Al Jabal al Akhdar, NE Libya

2019-12-30T00:00:00Z

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.

Assessment of brine disposal from Zliten desalination plant in marine environment

2019-12-28T00:00:00Z

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

Pregnancy outcomes of placenta Previa at Benghazi-Libya 2012 - 2013

2019-12-28T00:00:00Z

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.

Gestational diabetes effect on the histological structure of human Placenta

2019-12-28T00:00:00Z

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.

Refined saddlepoint approximations for the normalizing constant of the complex Bingham quartic distribution: A change of variable approach

2019-12-28T00:00:00Z

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

An adjusted scale binomial Beta H-Likelihood estimation method for unbalanced clustered binary response models

2019-10-25T00:00:00Z

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.

Analysis and diversity of family Fabaceae in Flora of Libya

2019-10-21T00:00:00Z

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%

Synthesis and physical characterization of oleyl oleate using acidic heterogeneous catalyst sodium hydrogen sulfate NaHSO4

2019-10-10T00:00:00Z

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.

Optimization of the separation of benzoic acid and sulphanilamide by capillary zone electrophoresis (CZE)

2019-10-03T00:00:00Z

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.

Assessment of mother’s awareness regarding indoor asthma triggers

2019-10-02T00:00:00Z

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.

Weed Flora of Man-Made river agriculture project (Masiklo)

2020-05-20T00:00:00Z

Weed Flora of Man-Made river agriculture project (Masiklo) Eltaguri, Houssein M The goals of the present work were to document the weed species in Triticum aiestivum L. (Wheat) fields in MR agricultural project Masiklo and to provide quantitative data that could be used to estimate losses due to weeds, also to attract the attention to the economically important weeds in MR agricultural project Masiklo and to develop methods for their control. In this study, a survey was conducted to identify weed species naturally occurring in MR agricultural Wheat fields in Masiklo Libya. A checklist including 41 species was prepared. The checklist includes the scientific name for each species. Reported species were belonging to 37 genera and 19 families of angiosperms. Dicotyledons were represented by 32 species, 30 genera, and 17 families, and Monocotyledons were represented by 9 species, 7 genera, and 2 families. The dominant families according to the number of species were Poaceae (8 species), Fabaceae (6 species), Asteraceae and Brassicaceae (5 species), and Apiaceae (3species). The results of this survey showed that Lolium rigidum, Fumaria officinalis, Hordeum murinum ssp. glaucum, Medicago polymorpha, Bromus madritensis, Bromus rigidus and Sinapis flexuosa were the dominant species in studied fields.

Solving the unsteady linear advection diffusion equations by using the totally volume integral of the local discontinuous Galerkin method.

2020-04-30T00:00:00Z

Solving the unsteady linear advection diffusion equations by using the totally volume integral of the local discontinuous Galerkin method. Elhad, Elhadi I; Fakroon, Mouad A In this paper, we present the totally volume integral of the local discontinuous Galerkin TVLDG method to solve the time-dependent linear convection-diffusion equation, the considered equation is discretized in space by the local discontinuous Galerkin method after the boundaries integral is transformed into the volume integral by employing the divergence theorem. The time discretization is accomplished by the third-order strong stability preserving Runge Kutta explicit SSP-RK (3, 3) method. Numerical solutions are compared with analytical solutions and other methods. The obtained results show that the totally volume integral of the local discontinuous Galerkin method is one of the most efficient methods for solving the time-dependent linear advection-diffusion equations

Electron density measurement from the emissivity ratio in hyperbolic geometry resampling the divertor of fusion reactor tokamak1

2020-04-25T00:00:00Z

Electron density measurement from the emissivity ratio in hyperbolic geometry resampling the divertor of fusion reactor tokamak1 Alhasi, Awad S The aim of this paper is to secure formula for measuring the electron density of the inhomogeneous plasma in divertor of the future reactor tokamaks such as the International Thermonuclear Experimental Reactor (ITER). This is done firstly by determining the emissivity ratio of the 𝐻𝛽 and 𝐻𝛾 lines of hydrogen plasma to get the electron temperature. Secondly, we use the resulting temperature to infer the electron density. The emissivity ratio is obtained by hyperbolic inversion of the measured intensity of the 𝐻𝛽 and 𝐻𝛾 lines. It is assumed that the free electrons have a Maxwellian velocity distribution and that the distribution of electron population over the bound levels is given by a coronal-type equation. The hydrogen plasma is assumed to be in a steady state without impurities contributing to the electron density.

Influenza virus vaccination among different groups in Wadi- Alshatti, Libya: A retrospective study

2020-04-23T00:00:00Z

Influenza virus vaccination among different groups in Wadi- Alshatti, Libya: A retrospective study Shahlol, Aisha M; AL-zidany, Ghufran M Background and Aim: Flu is a respiratory tract infection that is caused by the influenza virus. H1N1 influenza (swine flu) has triggered significant morbidity and mortality all over the world. Immunocompromised individuals are considered a high-risk group for infection. Our work aims to estimate, and monitor the rate of influenza in Wadi- Alshatti, Southwest Libya. Patients and Methods: Data were collected from the files of all individuals admitted to vaccine centers in the target places during 2014 and 2016. Influenza vaccine records were belonging to health care workers, pregnant women, individuals aged ≥ 50 years with and without chronic diseases, individuals aged < 50 years with chronic diseases, and others. Results: Total vaccination numbers were 6256 and 7843 individuals in 2014, and 2016, respectively. The highest numbers were 1703 (27.22%), and 2130 (27.15%) recorded in Zlwaz vaccine center during 2014 and 2016, respectively. There was a statistically significant difference between this center and the other vaccination centers in Wadi- Alshatti (P=0.00). Furthermore, the elderly aged persons ≥ 50 years old with chronic diseases represented 35.29% of all vaccinated individuals in 2016 but there was no statistically significant difference from the other groups. Conclusion: The results of the current study revealed a higher vaccination rate against H1N1- Influenza was in Zlwaz vaccine center, whereas, the lowest in Aldesa center. Other areas in Wadi- Alshatti as Aldri, Wanzairik, Timsan need more health promotion due to lack of recording and documentation

Thermoelectric power (TEP) and structural properties of ternary semiconducting V2O5– NiO–TeO2 glasses

2020-04-21T00:00:00Z

Thermoelectric power (TEP) and structural properties of ternary semiconducting V2O5– NiO–TeO2 glasses Tawati, Daefalla M; Hussein, Nagi A; Ayad, Arwa A; Mohammed, Hana M; Saltani, Hend A; Arof, A. K A press-quenching method from glass melt was used to prepare two series of ternary semiconducting V2O5–10NiO–TeO2 and V2O5–20NiO–TeO2 glasses. TEP, density (𝜌) and molar volume of oxygen (Vm) of these glasses were studied. Measurement of TEP at the temperature range 302 – 512K for the above glass samples has been made. Details on the formation of the polarons as well as the disorder energy resulting from randomized fields were obtained. Heikes’ equation and small polaron model theory relating to TEP managed to account sufficiently for the results from the experimental data. Results showed that as the content of V2O5 in glass increase there will be a fall in density in addition to a monotonical increase in molar volume. All the glasses appear to be in a single-phase structure.

Stem cells transplantation as a treatment for Parkinson’s disease

2020-04-14T00:00:00Z

Stem cells transplantation as a treatment for Parkinson’s disease Elbouri, Narmin M; Abdelmalik, Aisha M; Animasawun, Rashidat K Parkinson’s disease is a progressive disorder of movement that occurs mainly in the elderly. It is the second most common neurodegenerative disease after Alzheimer’s disease. Current pharmacological therapies focus on the substitution of dopamine, although this gives therapeutic benefits, its continued use is associated with reduced clinical benefits and it may be associated with a major motor complication known as dyskinesia. Due to their ability to transdifferentiate to dopamine producing cells, stem cell transplantation could be a long-term solution for the disease. Although many preclinical studies showed that different types of stem cells could improve the motor behavior in animal models of Parkinson's disease, there seem to be some technical challenges in the way of testing these cells on patients with the disease. This review highlights the recent advances in the use of three different types of stem cells; embryonic stem cells, neural stem cells, and other stem precursor cells. It particularly focuses on the complications that may arise from using each type of cell, summarizing some of the preclinical studies. Recent clinical studies using different types of cells were also reviewed.

Estimating the quantity of consumed plastic products and their economic returns in the city of Benghazi1

2020-04-14T00:00:00Z

Estimating the quantity of consumed plastic products and their economic returns in the city of Benghazi1 Elsheikhi, Salah A; Mohamed, Hamzah A; Eldressi, Khaled A Plastics recycling has gained significance and popularity over the last few decades due to environmental and economic reasons. Huge quantities of plastic products can be found in Benghazi city in places such as hospitals, restaurants, schools, factories, etc. Rather than accumulating these plastics products in the landfill areas, they can be recycled. Such an action preserves the environment and leads to great financial savings. This study aims to gather data on post-consumer plastic products from different locations and facilities in Benghazi. The plastics products have been classified into five types namely, PET, HDPE, LDPE, PP, and PS. The results revealed that many of the consumed products were PET. The study also reported the potential economic return of these products to some public institutions such as schools, the orphanage, and the homes of the disabled. Also, the study may serve as a starting point to the municipality of Benghazi and other local authorities towards improving the utilization of plastics waste and realizing the significance of their economic return.

Stratigraphic styles of the Upper Paleocene-Lower Eocene rocks along the escarpment of Jabal Waddan, NW Libya

2020-04-04T00:00:00Z

Stratigraphic styles of the Upper Paleocene-Lower Eocene rocks along the escarpment of Jabal Waddan, NW Libya Abdulsamad, Esam O; Emhanna, Saleh A; Asmaeil, Muayid B; Alwddani, Ahmed A Upper Paleocene-Lower Eocene carbonate rocks along the escarpment of Jabal Waddan of NW Libya are displaying two major sedimentary cycles based on stratigraphic and foraminiferal attributes. The first one is representing by a regressive-transgressive sequence and is attributed to the Shurfah Formation. It indicates that during the Thanetian (Upper Paleocene) the deposition of the lower part (the Bú Rá's Member) was in shallow water depths of the subtidal environment under low energy conditions and is represented primarily by Dasycladacean and Codiacean green algae. Their association up-levels with small shallow benthic foraminifera such as miliolids and nonionids, however, may indicate a broad nearshore environment of deposition. The decline of the green algae and the prevalence of small-sized (<1 cm) and thick operculinids witnesses in the middle and upper parts (i.e. the Qaltah and Ammúr members) are characteristic of an open-shelf setting down to a water depth of a few dozen meters and typify warmwater habitats. Evidence of further deepening is indicated up-section by the existence of common shallow shark-teeth in a water depth limited to the photic zone (<120 m). The second sedimentary cycle is showing a transgressive-regressive sequence and is ascribed to the Bishimah Formation. It shows that during the Ypresian (Lower Eocene) the deposition of the lower, middle and upper parts (i.e. Khayir, Wadi Zakim and Rawaghah members) of the Bishimah Formation was in the shallow marine neritic environment. The association of alveolinids with common textulariids in the lower and middle members points to a shallow inner shelf with water depth up to 60 m whereas their association with miliolids, nonionids and elphidiids seen at the upper levels indicate innermost shelf or restricted platform conditions. Evidence of further shallowing, however, is indicated up-section (the Rawaghah Member) by the presence of cross-bedded dolomitic limestone and chert nodules which delineate an advanced episode of the second sedimentary cycle. The closing part for the second cycle, however, is attributed to the overlying Al Jir Formation, elsewhere from the study area, in which a thick sequence of evaporates and chalky dolomites is reported to include a rich Spirolina-miliolid assemblage with globular alveolinids similar to those recovered from the studied deposits. Consequently, we recommend considering the Al Jir Formation as the upper member of the Bishimah Formation as originally described in the local literature. The boundary between the Ammúr Member of Shurfah Formation and the overlying khayir Member of the Bishimah Formation, however, is erosional everywhere in the study area and sets the contact between the first and second sedimentary cycles. It has been considered here to represent the Upper Paleocene/Lower Eocene boundary. Based on planktonic foraminiferal evidence, described from the subsurface of the Sirt Basin, the lower part of the khayir Member has been considered in the current study to represent a Ypresian (Lower Eocene) rather than Thanetian (Upper Paleocene) in age as previously thought

Implications of age in mammographic density interpretation

2020-04-07T00:00:00Z

Implications of age in mammographic density interpretation Geweref, Nadya F. Ben; Kutrani, Faiza M; Elbagermi, Nadeia M; Eljabali, Ebtisam F; Buzgheia, Mohamed E; Beheh, Ali A; Latawash, Ali M Objective. The importance of breast density correlated with its significant impaction in Mammogram’s interpretation and to the increased risk of development of breast cancer, we examined the breast density of 1051 of screening and diagnostic Mammography in Mammography unit in Benghazi medical center, our study aimed to find the relationship between the age and mammographic breast density. Materials and Methods. This is a retrospective review of the diagnostic and screening Mammography underwent in Benghazi Medical Center’s in Mammography unit during 2016-2917. Analysis of variance and descriptive analyses were used to evaluate the relationship between patient age and breast density. Results. A total of 1051 women were examined by digital mammography at Department of Radiology in Benghazi Medical Center during the period from 2016-2017, the women age was ranged from 22 to 88 years with a median age of 48 years, the subgroups are Classified by the age decade, and we find that the relationship between the age and the breast density is significant inverse relation (p=0.000) 60.9% of patients between40 and 49 years old had dense breasts. and it reduced to 36.6% of women in their 50s. However, 28.7% of females in their 60s and 5.3% of patients in their 70s had dense breasts as interpreted on their screening and diagnostic mammograms. Conclusion. We found that the age of the patient and the breast density are related inversely, but the interest is that we also found extreme value at the extremes of age where a considerable percentage of young women had mostly fatty tissue rather than glandular tissue and at the same time there's also a meaningful group of old women has dense breast tissue instead of fatty tissue.

Transportation of sediments by floating processes from southern Europe to the coastal regions of eastern Libya: Pumice rock fragments from at Tariyah and Qasr Libya coasts1

2020-04-03T00:00:00Z

Transportation of sediments by floating processes from southern Europe to the coastal regions of eastern Libya: Pumice rock fragments from at Tariyah and Qasr Libya coasts1 Elzouki, Ashour Y; Elfigih, Omar B Fragments of pumice of various sizes and roundness were found mixed with recent coastal sediments of calcareous sand, calcareous granules, and shells in At Tariyah coast southwest of Benghazi, and in the coastal area of Qasr-Libya, Al Jabal Al Akhdar, northeastern Libya. The source area for the pumice fragments appears to be the active volcanic regions of eastern and southern Sicily; Etna volcano and submarine volcano known as the CampiFlegrei del Mar di Sicilia respectively. The pumice must have traveled a distance of at least 1000km across the Mediterranean Sea as a floating load. The recent coastal sediments of the Al Jabal Al Akhdar area are derived mainly from two different sources; a southern proximal source consisting of a well-exposed sequence of Tertiary carbonate rocks that produced well-sorted sand-size fragments and a northern distal source that produced cobble-size fragments of pumice. The mechanism of transporting sediments by floating as a floating load, from one sedimentary basin to another is completely different from the other well-known and documented methods of bedload and suspended load. Floating fragments can be transported for long distances and finally deposited without appreciable changes in size, roundness, shape, or sorting. Pumice deposited on the eastern coast of Libya indicates that long-distance transport produces minimal or negligible changes in the textural parameters of floating load components

Electronic medical Physics encyclopedia and multilingual dictionary: Experience of Arabic translation project

2020-02-27T00:00:00Z

Electronic medical Physics encyclopedia and multilingual dictionary: Experience of Arabic translation project Hussein, Nagi A; Elyaseery, Ibrahim S Introduction to e-Encyclopaedia of Medical Physics with Multilingual Dictionary used to translate the most relevant scientific terms in the medical physics field into the Arabic Language

Seasonal variation measurements of indoor Radon concentrations in the city of Benghazi- Libya

2020-02-13T00:00:00Z

Seasonal variation measurements of indoor Radon concentrations in the city of Benghazi- Libya Hussein, Nagi A; Elyaseery, Ibrahim S.; Abdalla, Yaseen K; Saad, Abdallah F Indoor concentrations of radioactive radon gas were determined experimentally in fifteen selected locations within the grounds of the University of Benghazi, Benghazi city–Libya. Detection and registration of radon gas were achieved by means of CR-39 plastic detectors (SSNTD) attached to stainless steel cups that contain the samples using the method known as can technique or sealed-cup technique. Forty-five samples within the fifteen selected locations were counted for ninety days interval in the summer season and repeated for the winter season. Radon concentrations were determined for three different sample types in each of the fifteen locations. The three samples are defined as a brick wall, ceramic flooring and marble ledge in the faculty of Science building. Results showed that radon concentrations for all sample types and in all locations were below the ICRP action level limits in both seasons and their magnitudes are seasonal dependent, with high radon concentrations attained in the winter season. Exhalation rates and annual effective doses from all samples were also calculated and showed the familiar linear relationship with radon concentration.

Libyan Journal of Science & Technology volume 11 issue 1 table of content

2020-02-01T00:00:00Z

Libyan Journal of Science & Technology volume 11 issue 1 table of content

Libyan Journal of Science & Technology volume 11 issue 1 editorial board

2020-02-01T00:00:00Z

Libyan Journal of Science & Technology volume 11 issue 1 editorial board