Dyes are one of the most widely used materials in many industrial fields as coloring agents such as textile, wood, and food manufacturing. As these dyes end up in a water source, this high rate of dyes use represents one of the severe risks to the environment and health organizations. Most of the dyes are considered as highly toxic compounds and dangerous to the environment and human health as it consists of heavy metals, carcinogenic elements, oxygen – absorbing chemicals, and other toxic compounds that need to be well treated before discharge them back to environment. As a result, federal legislations have directed that all industrials that waste dyes-containing effluents to ensure a full dyes removal before discharging their effluents back to water bodies. Industries have applied many different treatment methods including physical, chemical, and biological methods in order to meet the required legislations. In recent years, many industries started to use electrocoagulation as the main treatment method. This study is focusing on using electrocoagulation (EC) method to remediate artificial colored effluents from coloring agents (brilliant green dye (BG dye) as a model). Electrocoagulation reactor, uses aluminum electrodes, was employed to remove this dye under different initial pH (40-10.0), direct currents (DC) (244-732 mA), and spaces between electrodes (SBE) (4-12 mm). According to the findings obtained, EC was highly efficient in treatment of colored effluents; 95.3% of BG dye was removed at treatment time, SBE, DC and pH of 30 minutes, 4 mm, 488 mA and 7.0, respectively.

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Wireless digital communications is rapidly expanding resulting in a demand for systems that are reliable and have a high spectral efficiency. To fulfill these delnands, the multicarrier nl0dulation schelne, often called Multicarrier Direct sequence Code Division Multiplexing Access (MC-DS-CDMA), has drawn a lot of attention. On the other hand Space Time Block Code-MC-DS-CDMA techniques have been considered to be a candidate to support multimedia services in mobile radio communications. In this work, a new structure for STBC-MC-DS-CDMA that based on Discrete Wavelet Transform (DWT) is proposed. The proposed system has been exanlined with different channel models (AWGN, flat fading and selective fading) and proves that it has better BER performance than the conventional STBC-MC-DS-CDMA using FFT due to the low and high pass filters contained in the wavelet transform. Index Terms-OFDM, DFT, DWT, STBC, MC-DS-CDMA 1. INTRO]lUCTION:Discrete Wavelet Transform (DWT) is a relatively new transfonn cOlnpared to the discrete Fourier transfonn (DFT). DWT provides the time-frequency representation of signals, whereas DFT gives only the frequency representation. The properties of wavelet, such as localization in time and frequency, orthogonality across scale and translation presents a new perspective in digital communication. It is used as a modulation technique in many communication fields including multicarrier modulation (MCM) and wireless communication. In [1], a comparison was made to the perfonnance of the different STBC-OFDM systems that based on FFT and DWT its showed that the DWT STBC-OFDM is better than the other OFDM systems in different channel models natnely AWGN, flat fading and selective fading channels. Due to the current trend of personal wireless communication, there are growing needs for both higher data rate transmission and multiple accesses. To fulfill these demands, a new scheme communication system which combines wireless digital modulation and multiple access is proposed, that combines the principle of CDMA with OFDM which allows one to use the available spectrum in an efficient way and retain the many advantages of CDMA system. This combination of OFDM-CDMA is a useful technique for 4G communication systems where it needs variable data rates as well as provides reliable communication systems.It is demonstrated that BER of STBC-CDMA based on-DWT consistently outperforms the least Juean square (LMS) and yet has a lower computational cOluplexity than the latter in the case of the 978-1-4244-2206-7/08/$25.00 ©2008 IEEE binary phase-shift keying (BPSK) modulation scheme. Simulation results are also provided in support of the theoretical analysis. In this paper, we restrict attention to binary signaling. However, the technique can readily be extended to the Quadrature phase-shift keying (QPSK) scheme and other modulation schemes with multiple bits per symbol [2]. The STBC-MC-DS-CDMA systems that based on FFT and Wavelet will be studied and its performance in different channel models (AWGN, flat fading and se...

Every day, the technologies are expanding and developed with extra things to them. A cloud computing (CC) and Internet of things (IoT) became deeply associated with technologies of the internet of future with one supply the other a way helping it for the successful. Arduino microcontroller is used to design robotic arm to pick and place the objects by the web page commands that can be used in many industrials. It can pick and place an object from source to destination and drive the screws in into its position safely. The robot arm is controlled using web page designed by (html) language which contain the dashboard that give the commands to move the servos in the desired angle to get the aimed direction accordingly. At the receiver end there are four servo motors which are made to be interfaced with the micro controller (Arduino) which is connected to the wireless network router. One of these is for the arm horizontally movement and two for arm knee, while the fourth is for catch tings or tight movement. Two ultra-sonic sensors are used for limiting the operation area of the robotic arm. Finally, Proteus program is used for the simulation the controlling of robot before the hardware installation

<span lang="EN-US">Smart healthcare is a program that provides services to patients and healthcare assistants at any time, it is used smartly with cloud computing. A smart mobile device can collect data from a wide range of receiving sets (Wi-Fi and cloud), underwired sensors, the internet of things (IoT). It permits doctors to monitor and diagnose patients with small embedded devices that are unobtrusive, wireless, lightweight, and capable of detecting, interpreting and communi-cating physiological signs easily in a timely manner without the need for a doctor present. This paper develops integrated smart records and reports and is shared via the cloud. A variety of small devices have been used that detect the object to be sensed and then tell the person monitoring the patient's condition, for example, body and room temperature, oxygen percentage, heart rate). This data is sent to the server via the Internet. To store details and monitor the patient through it. In the event that any error occurs in any of this data, such as a decrease or increase in the normal value, a signal will be sent via Telegram to the phone of the individual monitoring the patient's condition to alert and to take necessary action.</span>