Volume 11, issue 1, February 2020https://repository.uob.edu.ly/handle/123456789/12672024-03-28T22:14:53Z2024-03-28T22:14:53ZWeed Flora of Man-Made river agriculture project (Masiklo)Eltaguri, Houssein Mhttps://repository.uob.edu.ly/handle/123456789/12912020-10-01T20:49:18Z2020-05-20T00:00:00ZWeed 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.
2020-05-20T00:00:00ZSolving the unsteady linear advection diffusion equations by using the totally volume integral of the local discontinuous Galerkin method.Elhad, Elhadi IFakroon, Mouad Ahttps://repository.uob.edu.ly/handle/123456789/12902020-10-01T20:40:15Z2020-04-30T00:00:00ZSolving 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
2020-04-30T00:00:00ZElectron density measurement from the emissivity ratio in hyperbolic geometry resampling the divertor of fusion reactor tokamak1Alhasi, Awad Shttps://repository.uob.edu.ly/handle/123456789/12892020-10-01T20:29:40Z2020-04-25T00:00:00ZElectron 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.
2020-04-25T00:00:00ZInfluenza virus vaccination among different groups in Wadi- Alshatti, Libya: A retrospective studyShahlol, Aisha MAL-zidany, Ghufran Mhttps://repository.uob.edu.ly/handle/123456789/12882020-10-01T20:24:26Z2020-04-23T00:00:00ZInfluenza 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
2020-04-23T00:00:00ZThermoelectric power (TEP) and structural properties of ternary semiconducting V2O5– NiO–TeO2 glassesTawati, Daefalla MHussein, Nagi AAyad, Arwa AMohammed, Hana MSaltani, Hend AArof, A. Khttps://repository.uob.edu.ly/handle/123456789/12872020-10-01T20:17:43Z2020-04-21T00:00:00ZThermoelectric 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.
2020-04-21T00:00:00ZStem cells transplantation as a treatment for Parkinson’s diseaseElbouri, Narmin MAbdelmalik, Aisha MAnimasawun, Rashidat Khttps://repository.uob.edu.ly/handle/123456789/12862020-10-01T20:10:04Z2020-04-14T00:00:00ZStem 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.
2020-04-14T00:00:00ZEstimating the quantity of consumed plastic products and their economic returns in the city of Benghazi1Elsheikhi, Salah AMohamed, Hamzah AEldressi, Khaled Ahttps://repository.uob.edu.ly/handle/123456789/12852020-10-01T19:36:40Z2020-04-14T00:00:00ZEstimating 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.
2020-04-14T00:00:00ZStratigraphic styles of the Upper Paleocene-Lower Eocene rocks along the escarpment of Jabal Waddan, NW LibyaAbdulsamad, Esam OEmhanna, Saleh AAsmaeil, Muayid BAlwddani, Ahmed Ahttps://repository.uob.edu.ly/handle/123456789/12842020-10-01T19:14:47Z2020-04-04T00:00:00ZStratigraphic 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
2020-04-04T00:00:00ZImplications of age in mammographic density interpretationGeweref, Nadya F. BenKutrani, Faiza MElbagermi, Nadeia MEljabali, Ebtisam FBuzgheia, Mohamed EBeheh, Ali ALatawash, Ali Mhttps://repository.uob.edu.ly/handle/123456789/12832020-10-01T18:56:46Z2020-04-07T00:00:00ZImplications 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.
2020-04-07T00:00:00ZTransportation of sediments by floating processes from southern Europe to the coastal regions of eastern Libya: Pumice rock fragments from at Tariyah and Qasr Libya coasts1Elzouki, Ashour YElfigih, Omar Bhttps://repository.uob.edu.ly/handle/123456789/12822020-10-01T18:43:51Z2020-04-03T00:00:00ZTransportation 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
2020-04-03T00:00:00ZElectronic medical Physics encyclopedia and multilingual dictionary: Experience of Arabic translation projectHussein, Nagi AElyaseery, Ibrahim Shttps://repository.uob.edu.ly/handle/123456789/12812020-10-01T12:36:47Z2020-02-27T00:00:00ZElectronic 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
2020-02-27T00:00:00ZSeasonal variation measurements of indoor Radon concentrations in the city of Benghazi- LibyaHussein, Nagi AElyaseery, Ibrahim S.Abdalla, Yaseen KSaad, Abdallah Fhttps://repository.uob.edu.ly/handle/123456789/12802020-10-01T11:06:20Z2020-02-13T00:00:00ZSeasonal 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.
2020-02-13T00:00:00ZLibyan Journal of Science & Technology volume 11 issue 1 table of contenthttps://repository.uob.edu.ly/handle/123456789/12692020-09-27T13:54:17Z2020-02-01T00:00:00ZLibyan Journal of Science & Technology volume 11 issue 1 table of content
2020-02-01T00:00:00ZLibyan Journal of Science & Technology volume 11 issue 1 editorial boardhttps://repository.uob.edu.ly/handle/123456789/12682020-09-27T13:41:57Z2020-02-01T00:00:00ZLibyan Journal of Science & Technology volume 11 issue 1 editorial board
2020-02-01T00:00:00Z