Abdulrahman Khaleel Suliman

college of science Salahaddin University - Erbil · physics department

A pulse oximeter is an important medical device that tells you how well your body is working and monitors abnormal heart rate and oxygen saturation. While it is mainly used in medical settings, it has slowly been transferred to homes. The aims of this study are the development and evaluation of a pulse oximeter and its transfer to the finger and th...

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physical and geometrical properties of skeletal system

This research aims to evidence the effect of noise and long-time standing on the hearing and the skeleton system of the workers and find a method to reduce the noise in the beauty salon, and know if the geometrical design of the beauty salon affects the noise level. The measured parameters in this research include hearing tests, Sound level, the in...

This study demonstrates the effect of noise on the cardiovascular system of the beauty salon workers, and to find solutions to reduce the noise in beauty salons. The measured parameters in this research are the blood pressure and heart rate at standing, rest, after 2 min, after 4 min, and after 6 min, and the intensity of the hair drier measured. T...

بسم الله الرحمن الرحيم والحمد لله رب العالمين والصلاة والسلام على سيدنا محمد وعلى آل سيدنا محمد In the past decades, man was (and unfortunately still is) arrogant with his intelligence, reason, and discoveries, claiming that he invented and invented things “for which the earth did not know an example” and that he would transform life on our planet...

بسم الله الرحمن الرحيم والحمد لله رب العالمين والصلاة والسلام على سيدنا محمد وعلى آل سيدنا محمد In the past decades, man was (and unfortunately still is) arrogant with his intelligence, reason, and discoveries, claiming that he invented and invented things “for which the earth did not know an example” and that he would transform life on our planet,...

راشتييةكانى زانصتى شةردةم

This study focuses on estimating the risk of using electronic devices such as Television, Laptop, and Smartphones and the effects of blue light emitting from such devices on human eyes.Illuminance and intensity ofcommon selected electronic devices tested with a blue background for its high energy in a dark room atdifferent distances by means of mul...

This study consists of two parts; the first part is measuring the temperature and relative humidity of twenty pharmacy shops and pharmacy refrigerators in Erbil city. The temperature inside nine types of different drug bottles is also measured. The results show that temperature and humidity inside pharmacy places and refrigerators are higher than t...

This study consists of two parts; the first part is measuring the temperature and relative humidity of twenty pharmacy shops and pharmacy refrigerators in Erbil city. The temperature inside nine types of different drug bottles is also measured. The results show that temperature and humidity inside pharmacy places and refrigerators are higher than t...

The modified Callaway model is used to calculate Lattice Thermal Conductivity (LTC) for (20-nm) silicon nanowires diameter in the temperature range from 2K to 800K. Acoustic phonon mode and group velocity in the calculations are modified by spatial confinement of phonons with that of the boundary effects. All important scattering rates such as Umkl...

This study consists of two parts; the first part is measuring the temperature and relative humidity of twenty pharmacy shops and pharmacy refrigerators in Erbil city. The temperature inside nine types of different drug bottles is also measured. The results show that temperature and humidity inside pharmacy places and refrigerators are higher than t...

Earth's Shields and Life Protection “And We made the sky a protected ceiling, but they, from its signs, are turning away” Al-Anbya 32 From Allah’s greatest blessings to human being he created the earth and created for him all the necessities of sustaining life on this beautiful blue planet, and making a roof for it that protects it from all kinds...

In this paper, measurements of CO2 rate and its relation to temperature, humidity and wind speed were carried out at 13 different locations in Erbil city during March [ 2017 to 2018], it was found that CO2 rate is the same as global level (418ppm) for outdoor. Measurements of CO2 rates for indoor environment showed that using kerosene heaters (duri...

Effects of Non-Ionizing Radiation and its Health Hazards on human body The electromagnetic pollution is produced from the electromagnetic radiation source. In recent years, there is electromagnetic pollution in our earth. Different types of source are caused these pollution such as mobile phones, tower lines, and Wi-Fi. The increase of using these...

Abstract: Theoretical size dependence optical and acoustic Grüneisen parameter op(r ) and ac(r) at room temperature (300 K) are calculated for Si nanoparticles using modified Debye- Einstein approximation model. The obtained results are used for studying the total Grüneisen parameter 𝜸(𝜽𝑫(𝒓),𝜽𝑬(𝒓)). All parameters forming the model including, Ein...

energy and melting point, of different materials (Ag, Au, Sn and In) were calculated theoretically in this study by using the following two models: firstly, the lattice vibration-based model (LVB) of surface atoms and secondly, the surface-to-volume atom ratio (SVA) model of the free surface nanoparticle material. In this work, the melting temperat...

With increasing of the usage of the mobile communication devices and internet network information the electromagnetic pollution produced. the entry of private telecommunications companies in Iraq has been started since 2003, These companies began to build up cellular towers to accomplish the telecommunication works, but they ignore the safety condi...

الخلاصة تم البحث عن دقة صنع البارىء تعالى في الهيكل العظمي للانسان من حيث الاشكال الرائعة لكل عظم استنادا الى موقعه, ووظيفته, مع جمالية هيكل الانسان . ثم د راسة القوانين الفيزيائية والهندسية المتضمنة في هذا الهيكل الذي بموجبه يتحرك الجسم ويوازن ويقاوم مختلف القوى المؤثرة عليه. وتم التطرق على التركيب الداخلي البديع للعظام وكيف استلهم منها المهندسون...

The electromagnetic pollution is produced from the electromagnetic radiation source. In recent years, there is electromagnetic pollution in our earth. Different types of source are caused these pollution such as mobile phones, tower lines, and Wi-Fi. The increase of using these devices will lead to increase various problem of public health. The aim...

The modified Debye-Einstein approximation model is used to calculate nanoscale size-dependent values of Gruneisen parameters and lattice specific heat capacity for Si nanowires. All parameters forming the model, including Debye temperatures, bulk moduli, the lattice thermal expansion and the lattice volume, are calculated according to their nanosca...

Abstract. The lattice Thermal Conductivity for silicon nanofilm with a thickness of 20 and 100nm has been calculated theoretically over wide range of temperature. The modified Debye-Callaway model depending on the size dependence lattice volume and Debye temperature was used. In this calculation, both longitudinal and transverse modes are taken int...

In recent years, there is electromagnetic pollution in our earth. Different types of source are caused these pollution such as mobile phones, tower lines, and Wi-Fi. The increase of using these devices will lead to increase various problem of public health. Various data (the power density) were collected from two types of mobile phones, tower cell...

Background: Microwaves are a form of electromagnetic energy, like light waves or radio waves, and occupy a part of the electromagnetic spectrum of power, or energy. Microwaves are very short waves of electromagnetic energy that travel at the speed of light (186,282 miles per second). In our modern technological age, microwaves are used to relay lon...

Abstract The modification of lattice vibration based model used to predicate the dependence of melting temperature on the size and mean square displacement of the free standing gold spherical nanoparticle. The models predicate that the melting temperature decreases with the reduce of nanoparticles size due to the change of its lattice volume, calcu...

Lattice thermal conductivity for silicon nanowires and quantum well are theoretically investigated in the temperature range from 2K to 300K. The modified Gallaway method for bulk crystal is used for calculating lattice thermal conductivity. All important phonon relaxation mechanism such as Umklapp scattering, Mass-difference scattering and boundary...

Lattice thermal conductivity for silicon thin films with a thickness of 20-nm is investigated theoretically at room temperature. The modified Callaway model was used which takes into account modification of the acoustic phonon dispersion and group velocity due to spatial confinement of phonons and structure of boundary, all important scattering rat...