ahmed_hemaid

Ahmed Mahmoud Mostafa Elsayed Hemaid

Teadching-Assistant - مدرس مساعد

Faculty Of Archaeology

Address: Sohag University, Faculty of Archaeology, Department of Conervtion

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Synthesis and Characterization of Nano-Tungsten Oxide Precipitated onto Natural Inorganic Clay for Humidity-Sensing Applications
wet chemical method was used to obtain tungsten oxide nanoparticles from tungsten tetrachloride and natural microfibrous inorganic clay (sepiolite) as a starting material. Precipitation of tungsten oxide species onto sepiolite under basic conditions and subsequent thermal treatment was investigated, prompted by the abundance of sepiolite in nature and the useful environmental applications that could be attained. Laser granulometry, X-ray diffraction, ... Read more

2018 | Keywords Heavy metals,
Determination of the Level of Organophosphorous Pesticides in Tomato Using GC-MS/MS and the Concentration of Some Heavy Metals Using FAAS
Pesticides are commonly used in vegetation activities. Great attentions are paid by governments, health organizations, as well as many other institutions to the issue of food contamination caused by pesticides due to their dangerous impacts on public health [1]. Finding an efficient, economical and reliable method for studying these chemicals can help minimize the risks on our health [2]. To ... Read more

Atmospheric corrosion assessment of Cu nanostructured thin film
The study deals with the assessment of the atmospheric corrosion behaviour of Cu nanostructured thin films to investigate their corrosion susceptibility in comparison to bulk copper. Final goal is to evaluate the feasibility of employing Cu nanostructured thin films as reference material to assess the atmosphere aggressiveness in museum indoor environments [1]. Cu nanostructured thin films have been deposited on ... Read more

Microstructural and morphological characterisation of ancient bronze coins from the archaeological site of Al-Fustat city in Egypt
This paper deals with the microstructural and morphological characterization of some ancient bronze coins excavated in the Al-Fustat archaeological site. Al-Fustat is the first capital of Egypt in the Islamic civilization. It was built by Amr Ibn Al-As in the year 641 AD on the east bank of the Nile and replacing ancient Memphis to the west. In the ancient ... Read more

Wireless Sensor Network for Distributed Environmental Monitoring
ENVIRONMENTAL MONITORING IS EXTREMELY IMPORTANT TO ENSURE A SAFE AND WEALTHY LIFE OF BOTH HUMANS AND ARTIFACTS. MONITORING REQUIREMENTS ARE EXTREMELY DIFFERENT DEPENDING ON THE ENVIRONMENT, LEADING TO AD HOC IMPLEMENTATIONS THAT LACK FLEXIBILITY. THIS PAPER DESCRIBES AN IMPLEMENTATION THAT CAN BE ADAPTED TO MANY DIFFERENT APPLICATIONS AND EMBEDS THE FLEXIBILITY REQUIRED TO BE DEPLOYED AND UPGRADED WITHOUT THE NECESSITY ... Read more

Sensor network for museum environmental monitoring
Museum environmental monitoring is an important issue for the artifact conservation. Many solutions have been proposed to tackle this problem, but the museum constraints prevent an easy application in several cases, especially if the monitoring has to be performed in museums where an environmental control system has been already installed. This paper describes a simple though powerful solution, which complies ... Read more

Cloud infrastructure for museum environmental monitoring
This paper describes a cloud based architecture which has been designed for the monitoring of Cultural Heritage buildings. The architecture has been deployed in museums and basements proving its capabilities. The solution is composed of small sensing nodes with volume lower than 8 cm3 and dimensions of 2_._5 cm_× _1_._5 cm which are capable of acquiring temperature and relative humidity ... Read more

The sensing characteristics of ZnO tetrapods synthesized by microwave evaporation
ZNO TETRAPODS HAVE BEEN GROWN BY AN ENVIRONMENTAL MICROWAVE EVAPORATION APPROACH IN AIR ATMOSPHERE WITHOUT ANY USE OF ORGANIC SOLVENTS OR PRECURSORS. THE SYNTHESIZED POWDER WAS CHARACTERIZED USING X-RAY DIFFRACTOMETRY (XRD) AND FIELD EMISSION SCANNING ELECTRON MICROSCOPY (FE-SEM). THE GROWN ZNO TETRAPODS EXHIBITED A NOTEWORTHY MICROSTRUCTURE AND PHASE FORMATION OF CRYSTALLINE AND PURE STRUCTURE. ZNO TETRAPODS WERE DEPOSITED ON PT ... Read more

Survey on the Moisture and Ash Contents in Agricultural Commodities in Al-Rass Governorate, Saudi Arabia in 2017
Researchers and governments are paid great interest concerning food safety and quality of food stuff. Determination of moisture and ash contents was accomplished by using simple, easy and low cost method to establish a database for agricultural commodities. Twenty four types of agricultural commodities were collected from the local market in Al-Rass governorate, Al-Qassim region, Saudi Arabia. The samples were ... Read more

Investigations methods to study corrosion of some ancient Islamic copper coins at Faculty of arts museum, Sohag university, Egypt
THROUGH THE TIME, COPPER AFFECTED BY DETERIORATION FACTORS THAT INTERACT WITH ENVIRONMENT. OXYGEN CAUSES CORROSION OF COPPER ARTIFACTS AND FORMS COPPER OXIDES, MEANWHILE IT STARTS TO MINERALIZE AND BACKS TO ITS NATURAL STRUCTURE. THIS RESEARCH STUDIED FIVE ISLAMIC COPPER COINS AT FACULTY OF ARTS MUSEUM IN SOHAG UNIVERSITY BY EXAMINATION AND ANALYTICAL METHODS TO IDENTIFY THE CORROSION NATURE AND ITS ... Read more