Vol. 2 No. 4 (2024): Sana'a University Journal of Applied Sciences and Technology | Sana'a University Journal of Applied Sciences and Technology

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

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 M.S. Jamil, Hussein M.A. Al-Maydama, Ahmed N. Al-Hakimi, Ghadeer Y.S. Al-Mahwiti, Hassan M. Ibrahim, Basem Al-Akhali

339-347

2024-08-31

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DOI: 10.59628/jast.v2i4.1011

Abstract

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.

Keywords

Green Synthesis ZnO Nanoparticles Aloe Fleurentinorum Antibacterial antioxidant activity

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

Sultan Yahya AL-SULTAN, Ibrahim Ahmed Al-Baltah

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.

Evaluation of Medical Waste Generated from Government Hospitals and Healthcare Centers in the City of Hodeidah, Yemen

Mohammed Y. Talhi, Hisham Mohamed Nagi

355-362

2024-09-02

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DOI: 10.59628/jast.v2i4.1046

Abstract

In the present study, the current status of medical waste management in the city of Hodeidah was presented in terms of its definition, components, sources, and threats that may result from improper handling. This investi-gation aims to study the potential environmental and health impacts of existing medical waste produced by the government hospitals and healthcare entities in Hodeidah City, in addition to comparing the applied methods and procedures with the methods and procedures that are applied in developed countries. The research study was carried out from January 2022 until January 2023, and targeted ten government hospitals and healthcare institutions in Hodeidah City. It relied on descriptive and analytical scientific methods, which aim to describe and analyze medical solid waste generated from the selected institutions. The result of the study showed that the total quantities of waste produced in all studied government health facilities amounted to approximately 599,038 kg/year. The percentage of non-hazardous waste was about 67% against hazardous waste which was 33%. Hospitals that receive more patients and have more beds as well as a multiplicity of their specialties generate larger medical wastes. The present research investigation revealed that government hospitals and healthcare centers in the city of Al-Hodeidah have low levels of health and safety conditions. They do not meet the local and international standards and requirements in the Medical Waste Management Guides and Recommendations. The poor management situation of medical waste could expose Yemeni citizens to danger. The healthcare insti-tutions should be supervised and controlled and ensure management of medical waste following environmental regulations and laws.

Keywords

Medical Waste Healthcare Management Hodeidah Yemen

Classification of IDS modern techniques in cloud computing.

Survey of Intrusion Detection Techniques in Cloud Computing

Suad Mohammed Othman, Adnan Yehia Al-mutawkkil, Amani Mohammed Alnashi

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

375-380

2024-09-02

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DOI: 10.59628/jast.v2i4.1023

Survey on Cloud Computing Security

Fatima Ismail ALhadi, Nagi Ali AL-Shaibany, Sharaf Abdulhak AL-Homdyl

381-390

2024-09-02

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DOI: 10.59628/jast.v2i4.1025

Abstract

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.

Keywords

Cloud Computing Attacks Security Models IDS CIDS

Titanium Complex with New Schiff Base 4-(N, N-dimethylaminobenzylidene)-1- phenylsemicarbazide: Synthesis, Thermal, XRD, and Antibacterial properties

Fathi M. Al-Azab, Yasmin M. S Jamil, Nedhal A. A. Al-Selwi, Ahmed N. Alhakimi, Dheya A. Hameed, Gamil M. S. Qasem, Abuzar Ebead Albadri Albadri

391-402

2024-09-02

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DOI: 10.59628/jast.v2i4.1145

Sana'a University Journal of Applied Sciences and Technology

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