JournalTOCs

Alfarama Journal of Basic & Applied Sciences
Number of Followers: 12

This is an Open Access Journal

Open Access journal
ISSN (Online) 2682-275X
Published by Port Said University

[3 journals]

Molecular Docking Approach of Some Quinoxaline Derivatives as Anticancer
Agents Targeting VEGFR-2.
- Abstract: The vascular endothelial growth factor receptor-2 (VEGFR-2) has a crucial role in the angiogenesis of cancer. The growth of tumors was effectively prevented by inhibiting the VEGFR-2 regulatory pathway. Quinoxaline nucleus has been identified as a promising candidate that can potentially serve as a primary model for the design and synthesis of anticancer drugs that target VEGFR-2. The binding affinity of four quinoxaline-based derivatives towards the active site of the VEGFR-2 [PDB ID: 2OH4, resolution: 2.05] receptor obtained was investigated using a molecular docking approach. Quinoxaline compounds III and IV displayed binding interaction against the key amino acids of the VEGFR-2 with affinity values of -15.63 and -17.11 Kcal/mol, respectively. In addition, compounds I and II revealed affinity values of -12.13 and -11.93 kcal/mol, respectively. The present study revealed that the examined compounds I, II, III, and IV have good binding energy and interaction modes against the VEGFR-2 active site.
Precise Determination of Energy Levels, Work Function and Explanation of
Near-Ambient Superconductivity of Solids By Quantum Quantitative Model
- Abstract: ABSTRACTThe exact relation between the energy band structure of a solid and its crystalline structure is not known yet. In addition, the thought that the Brillouin zone contains all states or a number of states and these states varies from point to point, in a complicated manner, inside the zone needs to be reconsidered. Also, the explanation of the work function of a solid and considering it as a surface phenomenon and not a character of the solid still needs more clarification. Indeed, there is variety of physical phenomena that need explanation such as the electrical resistivity of materials. Therefore, the present work aims to find the exact relation between the crystal structure and its energy band structure and determine precisely the energy levels of the electrons in the solid by using a quantum quantitative model. Here we show that the quantum quantitative model based on the crystalline accommodation law can successfully get the exact relation between the crystalline structure of the solid and its energy band structure, and determine precisely the energy levels of each element. In addition, we could successfully get an acceptable physical explanation of the electrical resistivity of materials including superconductors. Moreover, it can predict exactly the values of the work functions of the elements, and determine precisely the crystal interaction energy and exchange interaction energy of the electrons inside the solid. The precise prediction of the work function of the elements is conclusive evidence of the validity of this model.
Penicillium oxalicum Isolated from Zea maysRhizosphere as a Promising
Plant Growth Promotor via Multiple Mechanisms.
- Abstract: The use of synthetic fertilizers in agricultural production has harmful impacts on the ecosystems. Therefore, there is an emergent demand for using natural and sustainable practices to save the environment. Some of the soil microflora are plant-growth-promoting fungi (PGPF) which promote plant growth and are considered potential biocontrol agents against phytopathogens. In the present investigation, more than 300 fungal species were isolated from the rhizosphere and rhizoplane of Zea mays and Vicia faba from AlRaswa Ferry of Port Said governorate and characterized for their potential as an Arabidopsis thaliana plant growth promotor. Four species, Penicillium oxalicum, Fusarium oxysporum, Aspergillus niger, and Paecilomyces lilacinus revealed to have the highest capacity to enhance A. thaliana growth. The most observed effects on A. thaliana are a significant improvement in root length development and the number of leaves due to multiple mechanisms, e.g., the fungal phytohormone IAA production, volatile and siderophore production, and phosphate solubilization. Fungal volatiles of Penicillium oxalicum increased the shoot length of seedlings by 11.8%, the root length by 250%, the number of leaves by 60%, and the indole acetic acid production by 110% compared to the controls. Our results introduce Penicillium oxalicum as a natural biological plant growth inducer whether individually applied or mixed with the other identified fungal species which may act as a practicable substitute for harmful chemicals in the agricultural industry.
Asymmetric Dicationic Ionic Liquids: synthesis and evaluation as additive
improvers for Egyptian Base Oil III
- Abstract: In this work, we synthesized three distinct types of asymmetrical dicationic ionic liquids: 1- (2- (1- decyl -1H -imidazolium-3 -yl) ethyl) pyridinium bromide (IL301), 1- (5- (1- decyl -1H-imidazolium-3-yl) pentyl) pyridinium bromide (IL302), and 1-(10- (1- decyl -1H-imidazolium-3-yl) decyl) pyridinium bromide (IL303). Their structures were characterized by using the conventional techniques of analysis, (elemental analysis, Fourier Transform infrared spectroscopy, and proton nuclear magnetic resonance). The surface characteristics of the synthesized asymmetrical dicationic ionic liquids, (surface tension, critical micelle concentration, effectiveness, maximum surface excess, and minimum surface area) were studied. Additionally, the standard free energies of micellization and adsorption were calculated for each compound. The efficiency of IL301, IL302, and IL303 to enhance base oil was examined and recorded, specifically in terms of oxidation stability (measured through changes in total acid number [TAN] and viscosity) and foam characteristics. The data indicated that IL303 was the most effective base oil enhancer, followed by IL302 and IL301.
Atrazine Toxicity in Nile Tilapia [Oreochromis niloticus].
- Abstract: The herbicide atrazine is currently the most popular in the world's agriculture. The aim of the current study was to assess the toxicity of the commercial herbicide atrazine [Gesaprim] and its divers effects on haematological and biochemical indices in Nile Tilapia [Oreochromis niloticus]. By using probit analysis, the atrazine's 96-hour LC50 was determined [29.889 mg/L]. Fish were subjected to atrazine at varying concentrations [1/2 LC50=14.945 mg/l, 1/3 LC50=9.96 mg/l, 1/5 LC50 = 5.978, and 1/10 =2.989 mg/l] for a month in the study on chronic toxicity. WBC, MCHC, MCH, cholesterol, triglycerides, creatinine, uric acid, glucose, AST, and ALT demonstrated a significant increase with increasing concentrations and days [P<0.05], whereas RBCs, Hb, Ht, MCV, protein, albumin, and globulin demonstrated a significant decrease [P<0.05]. Hence, the study has demonstrated that atrazine exposure is hazardous to O. niloticus. Therefore, the use of the herbicide atrazine must be at a minimum level and these parameters can be used as effective guidelines for the toxic level indices for farmed tilapia fish.
Tectonic Development of Wadi Mi’ar Area, Sinai, Egypt: Implications
of Low-Temperature Thermochronology Techniques
- Abstract: The basement rocks of Wadi Mi’ar, cropping out along the eastern flank of the Suez Rift, constitute part of the NE segment of the Neoproterozoic Arabian-Nubian Shield. The whole region is finally reshaped by the Suez Rift initiation during the Oligocene-Miocene. Low-temperature thermochronology techniques are capable of providing new insights into the tectonic development of the Suez Rift by reconstructing the uplifting response of its flanks. Therefore, we provide here thermochronological data for seven collected samples from the basement rocks of the Suez Rift’s eastern flank at Wadi Mi’ar. Zircon fission-track technique yielded cooling ages of 339 ± 10 Ma and 334 ± 9 Ma. While the apatite fission-track dated samples yielded ages between 26 ± 5 Ma and 21 ± 4 Ma. These cooling ages and the time-temperature modelling revealed three possible cooling pulses that represent exhumation events which were initiated as a response to three tectonic events; (1) the Neoproterozoic post-accretion erosional event, (2) the Devonian-Carboniferous Hercynian tectonic event, and (3) the Oligocene-Miocene Suez Rift. Furthermore, the Suez Rift initiation was accompanied by more than 3 km of rift flanks uplift to exhume samples from depths equivalent to 110 ˚C (apatite fission-track partial annealing zone) in the studied region. While the northern portion of the flank is dominated by older thermochronologic ages and modest rift flanks elevations.
Cost-Benefit Analysis of a Two-Unit Cold Standby System with Imperfect
Repair Man and Abnormal Weather Conditions
- Abstract: This study examines the dependability of a cold standby system made up of two similar units. One of the two units is always in use, and the other unit is on cold standby. The repairman could be present or not at the job site. The system operates in both regular and abnormal weather situations. The current systems that are in place have been impacted by recent global climatic shifts. In this study, we examine how these climate fluctuations around the world affect the two-unit standby system. Furthermore, the impact of the repairman's absence is also investigated due to the lack of a skilled crew. When the weather is normal, the device works; when the weather is abnormal, the system shuts down and the device stops working. The mean time of system failure, steady-state availability, busy periods with maintenance, and cost-benefit analysis were evaluated, among other significant dependability metrics. all of the previously mentioned analyses were done by using regenerative point technique.
Evaluating the Effectiveness of newly prepared Asymmetric Dicationic Ionic
Liquids in Egyptian Base Oil improvement II
- Abstract: This study synthesized three types of asymmetric dicationic ionic liquids, specifically, 1- ( 2 - (1- decyl - 1H - imidazolium - 3 - yl) ethyl) - 3 - methylpyridinium bromide (IL 201), 1- ( 5 - (1- decyl -1H - imidazolium - 3 - yl) pentyl) - 3 - methylpyridinium bromide (IL 202), and 1 - (10 - (1- decyl -1H -imidazolium -3 - yl) decyl) - 3 - methyl-pyridinium bromide (IL 203) and evaluated their structures via elemental analysis, FT- IR, and 1H - NMR spectroscopy also their surface activity, (surface tensions, critical micelle concentration, effectiveness, maximum surface excess and minimum surface area), were studied. Their influence on base oil was evaluated, including foaming characteristics and oxidation stability by studying the change in total acid number ‘TAN’ and viscosity. IL 203 was found to be the most efficient base oil improver, followed by IL 202 and IL 201.
Design and Implementation an Intelligent Dynamic Negotiation with Third
Party for Cloud Computing
- Abstract: Only a successful network connection is required for the cloud computing concept to provide access to information and computing resources from anywhere, to keep up with the dynamic nature of the cloud environment, like multi-tenancy and various distributed systems, where Cloud Computing is, by nature, multi-tenant, complex, large-scale, and heterogeneous distributed systems. Thus respectively, its processes and strategies need to be automated and integrated .One of the essential processes in the Cloud computing system is negotiating the service level agreement which always has to be elastic and flexible in handling and translating the user services' requirements, where The Service Level Agreement (SLA) is a formal negotiated agreement that helps to identify expectations, clarify responsibilities, and facilitate communication between the service provider and the users, this paper's aim to create a framework for dynamic service level negotiations for the cloud. Also proposed negotiation framework primarily relies on intelligent agents that play the role of third parties to overcome obstacles in static negotiations, like the ongoing changes in business service requirements.
Outdoor survey of absorbed dose rate and annual effective dose in Port
Said, Marsa Alam-Shalateen and Helwan areas – Egypt.
- Abstract: In this paper, in situ measurements for outdoor absorbed dose rate (outdoor D) of port said, Marsa Allam Shalateen and Helwan areas using survey meter and the outdoor annual effective dose (outdoor AED) has been calculated for the investigated sites. These results were compared with worldwide average value and also, compared with our previous published results estimated the outdoor D and the outdoor AED from the soil or shore sediment only depending on their activity concentrations of 226Ra, 228Ra and 40K for the same studied sites. Also, the effect of elevation from the sea level on absorbed dose rate and annual effective dose was studied. The contour maps of the outdoor D for Port Said, Marsa Allam-Shaltain and Helwan areas are discussed. outdoor D of Port Said and Helwan areas ranged from 4.29 and 10.00 to 31.43 and 41.43 (nGy/h) with averages 15.68 and 19.65 (nGy/h) respectively. Soil samples of Port Said and Helwan areas have outdoor AED values ranged from 5.26 and 12.26 (µSv/y) to 38.54 and 50.80 (µSv/y) and with averages19.30 and 24.10 (µSv/y) respectively. Port Said and Helwan areas have outdoor D and outdoor AED values lower than the worldwide average values recommended by UNSCEAR 2000 but the highest values are around the industrial facilities in both cases of soil and shore sediment.
An Automatic system to classify MRI brain tumor using Convolutional Neural
Network An Automatic system to classify MRI brain tumor using
Convolutional Neural Network
- Abstract: The brain tumor is regarded as a serious cancerous tumor that if not detected and accurately identified, may lead in the patient's death. Therefore, recent advances in the field of deep learning (DL) have assisted radiologists in diagnosing tumors with high accuracy and speed when compared to manual diagnosis, which requires the radiologist's effort and competence. Oncologists typically perform the initial evaluation of brain tumors using medical imaging techniques such as computerized tomography (CT) and magnetic resonance imaging (MRI). These two medical imaging techniques are commonly used to create highly detailed images of the brain's structure to monitor any changes. A surgical biopsy of the suspected tissue (tumor) is required for a detailed diagnosis by the specialist if the doctor suspects a brain tumor and needs more information about its type. These various techniques in brain tissue imaging have increased image contrast and resolution in recent years, allowing the radiologist to identify even small lesions and thus achieve higher diagnostic accuracy. This research introduced an automatic system using a Convolutional Neural Network (CNN) to classify MRI brain tumor images consisting of various layers, and then selected the best system that achieved an accuracy of 99.6% with different images sizes and learning rates.
PROPERTIES AND APPLICATIONS OF THE COMPOSITION OPERATOR BETWEEN CERTAIN
FUNCTION SPACES.
- Abstract: In this study, we aim to investigate the boundedness and compactness of the composition operator $C_\Theta$, and to provide characterizations of its boundedness and compactness.We introduce necessary conditions and sufficient conditions for the operator $C_\Theta$ to map $\mathcal{B}^{(m,n)}_g$ into the $Q_{P}$ space. In this study, we aim to investigate the boundedness and compactness of the composition operator $C_\Theta$, and to provide characterizations of its boundedness and compactness.We introduce necessary conditions and sufficient conditions for the operator $C_\Theta$ to map $\mathcal{B}^{(m,n)}_g$ into the $Q_{P}$ space. In this study, we aim to investigate the boundedness and compactness of the composition operator $C_\Theta$, and to provide characterizations of its boundedness and compactness.We introduce necessary conditions and sufficient conditions for the operator $C_\Theta$ to map $\mathcal{B}^{(m,n)}_g$ into the $Q_{P}$ space. In this study, we aim to investigate the boundedness and compactness of the composition operator $C_\Theta$, and to provide characterizations of its boundedness and compactness.We introduce necessary conditions and sufficient conditions for the operator $C_\Theta$ to map $\mathcal{B}^{(m,n)}_g$ into the $Q_{P}$ space.
Geoenvironmental hazards assessment in the Northwest Suez Canal region,
Egypt
- Abstract: ABSTRACTWaterlogging and soil salinization are a threat to arid regions around the world. The study area is in the Northwestern Suez Canal Region (NWSCR), which has a high population density and significant agricultural activity. Waterlogging, salt-affected soil and land degradation are among the most common hazards caused by human activity in the NWSCR. In the current work, remote sensing digital data and global digital elevation model (GDEM) are integrated using Geographic Information System technologies to assess the prevalent geo-environmental hazards at the NWSCR. The findings indicate that the NWSCR is extremely vulnerable to water logging and soil salinization, with a strong relation to the latest human activities. The acquired results indicate that 1241 km2 of the NWSCR is permanently water-logged, 41.66 km2 is influenced by temporary water-logged areas, and 26.32 km2 is influenced by soil salinization. As a result of flood-irrigation practices, human activity, and arid conditions, the NWSCR has more water-logged zones and salinized soil. It is recommended that modern irrigation systems be used to avoid waterlogging and soil salinization.
A Seventh-order Perturbational Weighted Essentially Non-oscillatory Scheme
for Hyperbolic Conservation Laws
- Abstract: This study presents a modified seventh-order weighted essentially non-oscillatory (WENO) finite difference scheme based on the numerical perturbation method established in [1]. The perturbed candidate polynomials of the seventh-order WENO scheme are evolved using a perturbational polynomial of the grid spacing, which modifies the polynomial approximation used for the classical WENO7-Z reconstruction on each candidate stencil. Furthermore, it is found that the new weighted scheme constructed with the new perturbed polynomials candidate has necessary and sufficient conditions for seventh-order convergence that are one order lower than those used by Henrick for the classic WENO scheme with seventh-order convergence, as presented in [2]. As a result, even at critical locations, the new seventh-order WENO scheme, which uses the perturbed polynomials and the same weights as the WENO7-Z scheme as demonstrated in [3], is able to satisfy the necessary and sufficient condition for seventh-order convergence.The new WENO7-P scheme reduces numerical dissipation in WENO schemes. Numerical examples verify the new scheme's accuracy, low dissipation, and robustness.
Matrix Metalloproteinase-9 Gene Polymorphism in Patients with
Hepatocellular Carcinoma
- Abstract: Background: The focus of the study was to investigate the gene polymorphism of MMP-9 in hepatocellular cancer patients. Hepatocellular carcinoma is one of the most prevalent cancers. Matrix metalloproteinases are enzymes that degrade extracellular matrix proteins and are essential for cell migration during cancer invasion. The frequency of MMP-9 1562 C/T (3918242) was determined in HCC patients and the level of MMP-9 protein and its variation in HCC progression were evaluated in this study. Method: The study was conducted in a cohort of 100 samples (50 patients with HCC with cirrhosis and 50 patients with hepatitis C virus infection as controls). MMP-9 1562 C/T was determined by PCR-RFLP and MMP-9 protein level were assessed by ELISA. Result: In HCC patients P = 0.001, indicated a significant difference in the TT genotype between the patient group when compared to HCV group and the T allele had a high statistical significance among cancer patients (p = 0.001). Comparing MMP-9 protein levels between the control group and cancer patients identified a significant variation in MMP-9 protein level (p = 0.02). Conclusions: According to the data, the development of hepatocellular carcinoma was positively correlated with MMP-9. Hepatocellular carcinoma prognosis and prediction may be greatly affected by MMP-9.
Imbalance between Oxidative stress and Antioxidants in human Skin
Carcinoma
- Abstract: Background: Skin cancer belongs to the most frequent types of malignancies, that actually constitutes an important public health concern. Oxidative stress is an essential element and probably a driving factor for many chronic diseases, encompassing diabetes, Alzheimer and cancer. Malondialdehyde (MDA), Catalase (CAT) and superoxide dismutase (SOD) considered the most widely employed biomarkers for oxidative stress. Aim of the study: To assess the oxidative stress imbalance between tumor and normal tissues in Egyptian patients, suffering from skin cancer. Patients and method : The present study is regarded as a pilot case-control study constituting twenty skin tumor tissues and their adjacent normal tissues extracted from patients with human basal cell (BCC) and squamous cell (SCC) carcinomas, so as to evaluate the difference in the levels of MDA, CAT and SOD biomarkers between normal and cancer tissues, using a spectrophotometry method. The P-value is considered significant if its value is less than 0.05. Results : Tumor tissues had mean MDA levels of 1256±391.6 nmol/ml, which are higher than normal tissues' mean values 828.5± 117.8 nmol/ml. However, the mean SOD level of tumor tissue was decreased (100.6 ± 16.66 nmol/ml) compared to normal tissues (174.2± 14.69 U/L). With a P-value <0.05, the mean CAT level was lower in tumor tissue (101.0 ± 21.92U/L) than in normal tissues (182.9± 17.52ng/ml). Conclusion: MDA, SOD and CAT levels could be utilized as significant predictors or screening tests for detecting the population more likely to develop certain forms of skin cancer.
Comparative study on the nutritional value of some penaeid shrimps from
the Western Mediterranean coast of Egypt
- Abstract: The present study highlights the nutritional value of three commercial shrimps; the green tiger prawn Penaeus semisulcatus (De Haan, 1844), the kuruma prawn Penaeus (Marsupenaeus) japonicus (Bate, 1888) and the ginger prawn Metapenaeus monoceros. (Fabricus, 1798) collected along the western Mediterranean coast of Egypt. The results show that the percentage of protein of the three studied shrimps was the main constituent where female and male Marsupenaeus japonicus had the greatest protein percentage (51.37% and 50.12%, respectively). The highest lipid value was documented in female Marsupenaeus japonicus (13.01%) while the highest carbohydrate percentage was recorded in male Penaeus semisulcatus (3.1%). Nine essential amino acids which are arginine, histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine and valine were identified. Arginine recorded the highest average concentration. Three non-essential amino acids were detected, that are aspartic acid, glutamic acid and glycine. Vitamins B1 and B2 were detected in both sexes. Analysis of minerals showed the presence of four minerals (Ca, K, Na and P). P recorded the highest mineral concentrations in Marsupenaeus japonicus, Metapenaeus monoceros and Penaeus semisulcatus. Concerning the results of this study that focused on the nutritional value of three commercially important shrimps, it is recommended to be consumed by human as a good source of protein, arginine, vitamins B1 and B2, phosphorus and calcium. In conclusion, this comparative study revealed that the kuruma prawn Marsupenaeus japonicus has the best nutritive value among the studied shrimps.
Review Article: Cryptographic Algorithms for Enhancing Security in Cloud
Computing.
- Abstract: Cloud computing allows a huge amount of data storage and processing power to be available to users over the Internet. Many organizations are migrating from traditional data storage to cloud storage, which provides an efficient method to access data from anywhere and at any time. However, organizations' biggest barrier to adopting cloud computing is data security. Data security is one of the most critical aspects of cloud computing. As a result, there are various data security methods and implementations. Data encryption is the most commonly used method for protecting data security, which means that encrypting data before uploading it to the Cloud prevents unauthorized people from accessing it. This article provides an overview of existing symmetric and asymmetric cryptography algorithms. We cover Advanced Encryption Standard Algorithm (AES), Data Encryption Standard (DES), Triple Data Encryption (TDES), Twofish, and Blowfish for symmetric encryption techniques. Rivest - Shamir Adleman (RSA), Diffie-Hellman Key Exchange (DHKE), and El-Gamal are handled as asymmetric encryption algorithms.
Cnoidal and solitary dust ion-acoustic waves in Jupiter ionosphere
- Abstract: The nonlinear wave structure of small-amplitude dust ion-acoustic cnoidal and solitarywaves are investigated in a five-component plasma consisting of positive proton beam fromsolar wind, positive ion fluid, two electrons population, one of them from the solar windand stationary positive dust grains. The physical parameters in the system such as, thetemperature ratio of proton beam and positive ion, magnetic field and streaming velocityof the beam plays the dominant role in the profile of the amplitude and the width of thewave. Using the reductive perturbation theory, the basic set of equations is reduced toa Zakharov–Kuznetsov equation. The latter has been solved using the Painlev ́e analysisto obtain a set of analytical solutions, which reflects the possibility of the propagationof various nonlinear structures. The solutions of Zakharov–Kuznetsov equation present apositive potential, which corresponds to a compressive wave profile. The findings of thisinvestigation are used to interpret the electrostatic cnoidal and solitary waves that maybe observed in the Jupiter ionosphere.
Topological Approaches for Theoretical Mathematical Morphology
- Abstract: the mathematical morphology was originally developed to analyze and process binary image using the concepts and operations. Sets in mathematical morphology represented the shapes which were manifested on binary or gray images. The set of all the black pixels in a black and white image, constitutes a complete description of the binary image. In this paper, a novel point of view for mathematical morphology via topological concepts is proposed. And, the concepts of set theory and topological spaces will be imported to mathematical morphology. Furthermore, several topological spaces using morphological point of view are presented; by giving definitions for the families of sets that generates each space. we will first discuss the concept of morphological topological spaces, more topological structures and based on examples. Also, we will introduce new concepts based on these principles and definitions. Further, their topological properties are studied. we presented several topological spaces using morphological point of view; namely, morphological topological spaces, morphological co-topological spaces, morphological semi-topological spaces, morphological α-topological spaces and morphological pre-topological spaces.
Growth-inhibiting effect of cerium oxide nanoparticles on some fungal
isolates that may cause the football players’ skin diseases
- Abstract: Football sport is a public sport that is widely distributed around the world. Football players are subject to the same skin conditions as others, but participation in a sports environment characterized by unique stresses on the skin that are not normally seen in inactive individuals can cause skin issues. Nano-technology approach involving the synergistic interaction between microorganisms and nanoparticles offers an affordable, environmentally, and beneficial solution for fungal skin infection prevention. Herein, CeO2NPs were properly characterized using different spectral analyses. Moreover, different fungal species were systematically isolated from the eleven volunteer football players’ different skin parts, Port Said sporting city, Port Said, Egypt, and grown on a modified sabouraud dextrose agar medium. Eleven pure-culture fungal isolates were identified using spacer between 18S and 28S rRNA genes identification technique. The growth-inhibiting effect of different CeO2NPs concentrations on the fungal isolates after ten days of incubation was studied. Furthermore, the reduction activity of used CeO2NPs towards the isolated fungal species was inclusivity researched. The outcome data experimentally symbolized that the fungal isolates were remarkably stable under a pH of 5.5 and temperature of 25°C (optimized conditions). Besides, the growth-inhibiting of different fungal isolates was directly proportional to increasing the concentration of CeO2NPs and completely stopped at the optimum dosage of 12 g/L compared to the control sample (non-treated CeO2NPs specimen). Overall, the present study illustrates an ample perspective of cerium oxide nanoparticles as a futuristic platform for the decontamination of fungal skin diseases.
Updating the Geographical Distribution of Twenty- Eight Species of the
Egyptian Flora
- Abstract: The Egyptian flora has been suffering from great changes in the distribution of some plants since the last flora of Egypt in 2005. The factors affecting this distribution are temperature, rainfall, agricultural practices, construction activities etc. So, the geographical distributions of many species needed to be revised and updated. This investigation updated the distribution of twenty-eight species in different phytogeographical regions of Egypt according to some previous studies and herbarium records. These species were freshly collected materials from different phytogeographical areas. They belonged to fourteen families including twenty-four genera and eight sub-species. The revision of their geographical distribution showed the newly addition of sixteen species to the flora of the Eastern desert. Additionally, eight species were recorded to the flora of Deserts except that of Sinai. Finally, nine species were added to the flora of the Mediterranean region. The present research aims to update the distribution of twenty-eight species in different phytogeographical regions of Egypt according to some previous studies and herbarium records. These species belonged to fourteen families including twenty-four genera and eight sub-species. The revision of their geographical distribution showed the newly addition of sixteen species to the flora of the Eastern desert such as: Cynanchum acutum, Amaranthus blitum and Euphorbia helioscopia. Additionally, eight species were recorded to the flora of Deserts except that of Sinai among them: Heliotropium aegyptiacum, Chloris virgata and Commelina bengnalensis. Finally, nine species were added to the flora of the Mediterranean region e.g., Veronica anagaIlis-aquatica, Leptochola panicea and Chenopodium ficifolium.
Interaction of laser pulse with a quantum electron-hole semiconductor
plasma
- Abstract: A laser-driven plasma is investigated theoretically in a quantum electron-hole semiconductor plasma by a short electromagnetic pulse. The laser beam is single, short, and high-intensity. Using the quantum hydrodynamic (QHD) physical model consists of continuityand momentum equations for electrons and holes. These equations are closed by Poisson’sequation. The momentum equations include the wave vector of the electromagnetic field,pressure, and Bohm potential. It introduces the effect of two formulas about the pressurein the form of the last differential equations. An electromagnetic field is represented in thecircularly polarized Gaussian profile. Laplace transformation and convolution theorem areused to obtain the final evolution equation of our theoretical model. A laser-driven plasma is investigated theoretically in a quantum electron-hole semiconductor plasma by a short electromagnetic pulse. The laser beam is single, short, and high-intensity. Using the quantum hydrodynamic (QHD) physical model consists of continuityand momentum equations for electrons and holes. These equations are closed by Poisson’sequation. The momentum equations include the wave vector of the electromagnetic field,pressure, and Bohm potential. It introduces the effect of two formulas about the pressurein the form of the last differential equations. An electromagnetic field is represented in thecircularly polarized Gaussian profile. Laplace transformation and convolution theorem areused to obtain the final evolution equation of our theoretical model
Estimation of Log-Pearson Type III Distribution Using Percentile Roots:
ATM Transactions Over 24 Years in Saudi Arabia as a Case Study
- Abstract: Estimation methods of three-parameter distributions are essential in data-fitting distributions. In this paper, an application to a simple estimation method named Percentile Root (PR) was presented with ATM transactions as a case study. The PR method was applied to the ‎probability distribution Log-Pearson type III distribution. The statistical properties of the ‎distribution are exploited by PR to obtain the estimated parameters, ensuring the efficiency of ‎the method. The Anderson-Darling and Kolmogorov-Smirnov test were performed on the results of PR method. The significant results of‎PR method are compared with Maximum Likelihood Estimation (MLE), and it is clear that the PR method is simple in coding by a computer and provides precise results‎. The point is highly beneficial to applications of economic and commercial sciences. The Log-Pearson type III distribution was used by PR method and fitted to the ATM data set to overcome the problems of predicting the prospect numbers of financial transactions in banks.
Fully nonlinear dust-ion-acoustic excitation in Jupiter ionosphere
- Abstract: Fully nonlinear solitary wave structure of dust-ion-acoustic waves are investigated ina five-component plasma consisting of positive proton beam from solar wind, positive ionfluid, two electrons population, one of them from the solar wind and stationary positivedust grains. The physical parameters in the system such as, proton beam-to-positiveion temperature and density ratios, as well as solar wind electron number density playan important role in the profile of the large amplitude dust-ion-acoustic solitary waves.Using pseudo-potential approach (Sagdeev potential) the basic equations are reduced toone evolution equation called an energy equation. The latter has been analysed and solvednumerically to obtain an arbitrary amplitude solitary profile as well as the possible regionsfor the existence waves. The solution of energy equation presents a positive potential,which corresponds to a compressive wave profile. The findings of this investigation areused to interpret the electrostatic arbitrary solitary waves that may be observed in theJupiter ionosphere.