العدد الحالي

Sana'a University Journal of Applied Sciences and Technology

مجلد 2 عدد 4 (2024)

2024-09-02

8 مقال

The second volume - the fourth issue in the Sana'a University Journal of Applied Sciences and Technology

المقالات

8 مقالات

Phytochemical Screening and Biological Activity (Antioxidant and Antibacterial) of Punica granatum Fruit peel extract Cultivated in Sa'dah Governorate-Yemen

Naji A. Almasehali ، Hassan M. Ibrahim، Fares A. Alarbagi ، Amani A. AlGaadbi، Khlood A. A. H. Almakhzoum، Maher A. Almaqtari (المؤلف)

333-338

2024-09-02

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DOI: 10.59628/jast.v2i4.1117

Antibacterial activity of ZnO-NPs against different bacterial types

the Characterization, Antibacterial and Antioxidant of Phytosynthesized Zinc Oxide Nanoparticles Using Aloe Fleurentinorum Leaves Extract

Yasmin Jamil، Hussein M.A. Al-Maydama، Ahmed N. Al-Hakimi، Ghadeer Y.S. Al-Mahwiti، Hassan M. Ibrahim، Basem Al-Akhali (المؤلف)

339-347

2024-08-31

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DOI: 10.59628/jast.v2i4.1011

الملخص

The environmentally friendly methods for synthesizing metal oxide nanoparticles effectively save time, money, and effort. These methods involve the phytosynthesis process, which depends on plant extracts. To produce zinc oxide nanoparticles (ZnO − NP_s), we used at this work an extract of Aloe Fleurentinorum Leaves (AFL) as a reducing, capping, and stabilizing agent. As well as the effect of altering some parameters on the synthesis of ZnO − NP_s, such as the Temperature (T), the potential of hydrogen (pH), and the volume ratio (V/V), was studied using an X-ray diffractometer (XRD), crystallite size, and microstrain was determined, and the average crystallite size was between 16.50, and 25.99 nm. Also, ZnO − NP_s were characterized optically by a UV-Vis spectrophotometer and got 3.13 eV band gap energy. Fourier transfer infrared spectroscopy was used for characterization. The antibacterial activities of ZnO − NP_s were investigated against four bacterial species, and the results exhibit a noticeable effect, especially against gram-positive species, with inhibition zones ranging from 17 to 20 mm for the different concentrations. Also, the DPPH free radical method was used to evaluate the antioxidant properties of the synthesized zinc oxide nanoparticles at various concentrations, which showed a moderate scavenging efficiency of 52.74% at 800 µg/mL.

الكلمات المفتاحية

Green Synthesis ZnO Nanoparticles Aloe Fleurentinorum Antibacterial antioxidant activity

Enhancement Customer Loyalty Via Data Mining Techniques in Yemeni Banks: Review Study

SULTAN AL-SULTAN، Ibrahim Ahmed Al-Baltah (المؤلف)

348-354

2024-09-02

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DOI: 10.59628/jast.v2i4.1059

Average generation rate of hazardous and non- hazardous waste in the targeted health care institutions.

تقييم النفايات الطبية الناتجة عن المستشفيات الحكومية ومراكز الرعاية الصحية في مدينة الحديدة، اليمن

Mohammed Y. Talhi، هشام محمد ناجي (المؤلف)

355-362

2024-09-02

PDF بريد إلكتروني

DOI: 10.59628/jast.v2i4.1046

الملخص

تم في هذه الدراسة عرض الوضع الحالي لإدارة النفايات الطبية في مدينة الحديدة من حيث تعريفها ومكوناتها ومصادرها والتهديدات التي قد تنجم عن التعامل غير السليم معها. يهدف هذا البحث إلى دراسة الآثار البيئية والصحية المحتملة لإدارة النفايات الطبية الموجودة في المستشفيات الحكومية في مدينة الحديدة، محافظة الحديدة، الجمهورية اليمنية. علاوة على ذلك، بحثت الدراسة أيضًا في مدى التزام المستشفيات المحلية بالمعايير والإجراءات الدولية المستخدمة في التعامل مع النفايات الطبية. كما حددت التشريعات والقوانين المتعلقة بإدارة النفايات الطبية في اليمن. وأظهرت نتيجة الدراسة إجمالي كمية النفايات الطبية التي تنتجها جميع المرافق الصحية الحكومية في المدينة. كما تبين أن عملية الفرز بين النفايات الطبية الخطرة وغير الخطرة تتم في كل مستشفى حكومي وطرق جمع تلك النفايات وتخزينها مؤقتا داخل المنشآت، ووجهتها النهائية في موقع الإلقاء أيضا. وخرجت الدراسة بعدة توصيات لتحسين الأساليب والإجراءات التي ينبغي اتباعها في المستشفيات المحلية لمعالجة ومعالجة النفايات الطبية الخطرة.

الكلمات المفتاحية

Medical Waste Healthcare HealthcareManagement ManagementHodeidah HodeidahYemen

Classification of IDS modern techniques in cloud computing.

Survey of Intrusion Detection Techniques in Cloud Computing

سعاد محمد عثمان، Adnan Yehia Al-mutawkkil، Amani Mohammed Alnashi (المؤلف)

363-374

2024-09-02

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DOI: 10.59628/jast.v2i4.970

Overall architecture for the proposed approach

A hybrid Feature Selection Method Based on Binary PSO Algorithm for Microarray Data Classification

Heba Al.Marwai، Ghaleb H AL-Gaphari (المؤلف)

375-380

2024-09-02

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DOI: 10.59628/jast.v2i4.1023

الملخص

Microarray technology produces data with a large number of dimensions. The abundance of dimensions in the data makes it challenging for machine learning algorithms to extract meaningful information from it. To overcome this limitation, feature selection (FS) techniques can be applied to reduce the dimensionality of the data. FS is a crucial preprocessing step that allows for the handling of high-dimensional data and facilitates more effective and efficient processing. The primary objective of this paper is to develop an efficient FS method that can effectively reduce the dimensionality of microarray data. The Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) is utilized in the first filtering stage to extract informative features. The best feature subset is then determined by using a Particle Swarm Optimization (PSO) algorithm as a wrapper feature selector to identify ideal features. The proposed approach is evaluated using microarray datasets from the Alzheimer’s Disease Neuroimaging Initiative (ADNI) and compared with other algorithms. The experimental findings indicate that the proposed approach outperforms the benchmark methods in terms of classification accuracy.

الكلمات المفتاحية

Feature selection Particle Swarm Optimiza- tion algorithm Wrapper method Dimension reduction Multi attribute decision making

Survey on Cloud Computing Security

Fatima ALhadi، Nagi Ali AL-Shaibany، Sharaf Abdulhak AL-Homdyl (المؤلف)

381-390

2024-09-02

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DOI: 10.59628/jast.v2i4.1025

الملخص

One of the most popular IT subfields today is cloud computing. With a simple Internet connection, it enables users to access cutting-edge information, technology, and infrastructure. Because of the numerous benefits offered, most international organizations have started to move toward cloud computing environments during the last few decades. Companies and organizations find cloud computing appealing because it eliminates the need to plan for provisioning and enables them to start with modest resources and progressively raise them as service demand increases. Cloud computing presents opportunities for research as well as obstacles. The security and privacy of data in cloud systems are important issues. Now that cloud computing technology is developing quickly, it is more convenient for businesses to move their workload there. It asks for a smaller investment and guarantees quick delivery of cutting-edge technologies. Cloud security is of the utmost importance. It is susceptible to cyberattacks that exploit its vulnerabilities in an insecure cloud environment. This puts the cloud environment’s assets, resources, and data in danger. In this paper, we reviewed some cloud computing studies about various attacks on cloud computing services. This paper’s main objective is to give readers a better understanding of security issues and solutions.