OJS NTU Journal
Not a member yet
669 research outputs found
Sort by
A Comparison of the Randomness Analysis of the Modified Rectangle Block Cipher and Original algorithm
No full textIn recent years, different encryption lightweight algorithms have been suggested to protect the security of data transferred across the IoT network. The symmetric key ciphers play a significant role in the security of devices, in particular block ciphers. the RECTANGLE algorithm amongst the current lightweight algorithms. Rectangle algorithm does have good encryption efficacy but the characteristics of confusion and diffusion that a cipher needed are lacking from this algorithm. Therefore, by improving the algorithm confusion and diffusion properties, we expanded Rectangle utilizing a 3D cipher and modified the key scheduling algorithm. To assess if these two algorithms are random or not, randomness analysis was done by using the NIST Statistical Test Suite. To create 100 samples for each algorithm, nine distinct data categories were used. These algorithms created ciphertext blocks, which were then concatenated to form a binary sequence. NIST tests carried out under 1% significance level. According to the results of the comparison study, the proposed algorithm's randomness analysis results are gave 27.48% better results than the original algorithm
Evaluation of the genotoxicity and genomic instability in patients with HBV, HCV and HCC using micronucleus and comet assay
No full textOn somatic cells, the hepatitis B virus (HBV) and the hepatitis C virus (HCV) are mutagenic. HBV and HCV may be causing these mutagenesis effects via integrating into host DNA or by viral proteins. The purpose of this research was to investigate if HBV and HCV had a genotoxic effect on renal epithelial cells' DNA. A total of 145 samples were taken from participants between the periods of 5 \1 2020 and 15\9 2021. (40 healthy controls, HBV 38, 44 HCV, and HCC 23) were used to perform cytogenetic analysis in renal epithelial cells using the micronucleus (MNi) test and comet assay. For the comet experiment, 100 cells were examined for each participant. A total of 100 cells were examined, with MNi scores assigned to each participant. The frequency of MNi was found to be considerably greater in the HBV, HCV, and HCC patient groups than in the control group. There was no significant difference in MNi scores between the HBV, HCV, and HCC patient groups, however there was a significant difference between the study groups and healthy carriers. In conclusion: due to their levels of DNA damage and MNi, chronic HBV, HCV, and HCC patients are afflicted by genomic instability much like other patients
The Use of Different Concentrations of Oxalic Acid to Decrease the Infestation of Varroa Destructor during Autumn Season as One of Integrated Management Methods
Get PDFTrait results is applying different concentrations of oxalic acid on Varroa mite population parasitoid on honey bee which was conducted in the apiary of the College of Agriculture & Forestry for the year 2020. The concentration treatment of 4.2% showed the lowest mean number of mites falling on the hive board which amounted to 27.42 mites compared with the highest mean of 49.10 mites in the control treatment. This was reflected in the mean number of mites expected inside the cell. It was recorded in the control treatment which amounted to 4910 mites As for the relative effectiveness of the different treatments, the highest mean was recorded in the concentration treatment 3.5% with a mean of 86.84 compared with the lowest mean of 58.85 which was recorded in the concentration treatment 4.2%. As for the treatment efficiency, the highest mean efficiency was recorded 15.91% in the treatment concentration 4.2% compared with the lowest mean of 8.27% which was recorded in the 3.5% concentration treatment. Correlation statistical analysis showed some significant and non-significant differences among some characters in the different treatments
Using of Oximeter and Sound Analysis for Detection of Lung Lesions in Buffalo Calves
Get PDFAuscultation of the lung is the first line for the diagnosis of lung lesions. Analysis of the auscultated sounds is promising in the diagnosis confirmation. The aim of this study is to evaluate the use of sound analysis and oximeter for detection of the lung lesions in buffalo calves. The study included 100 calves showing respiratory symptoms and 30 clinically healthy calves serving as a control group which aged between (2-6) months from different areas in Mosul City. A pulse oximeter was used to measure the percentage of oxygen blood saturation, then measuring sound frequencies based on multi-resolution sound wave analysis by using digital program (WavePad). Affected calves showed coughing (100%), lacrimation (88%), nasal discharge (86%) and fever (58%). The sound analysis indicated that the natural sound frequency was (221) Hz, gradually increasing to (390.5) Hz in case of pneumonia. It then became (428) Hz in calves with wheezing sound. Diminished breathing sound had a frequency of 426) Hz synchronous with pauses that lasted (0.4) seconds after each complete inhalation and exhalation cycle. An oximeter reading had a positive correlation with each nasal discharge and eye lacrimation, while it had a negative correlation with both coughing and body temperature. The study concluded that sound wave analysis and oximeter were highly accurate in diagnosing the severity of the lung lesion compared to the detection of the clinical signs
The Performance of the U Shape Double pipe heat exchanger under effect of using Active Techniques.
Get PDFThe main aim from this research experimentally studied the effect of external power effect like use the active technique which is represented as an air bubble injection on shell side of of U shape double pipe heat exchanger and in this investigations was used a suitable U shape heat exchanger with different position angle of the U shape Exchanger like position (U shape , ? Inverse U shape ) in additionally used a system which has all the equipments that measuring flow rates and parameters, the vortex generation due to the curvature of bending shell and tube has strong effect to increase the performance of exchanger. The results with this injection inside the shell side demonstrated that the optimize position of exchanger with best performance of parameter was with (?) Inverse and the exchanger enhancement was (24.4%) due to the different shape of diffuser which was used it with inverse U shape exchanger. the air bubble injection as active technique it suggested that the effect cause by the bubble increment the agitation of flow and due to the motion of fluid and air as mixing turbulence flow motion and increased the heat transfer rate and performance parameter of exchanger
Assessment of the gas turbine unit in Kirkuk gas power station using energy and exergy analysis.
Get PDFThe present study aims to evaluate and analyze the gas turbine power generation unit (K3) in the Kirkuk gas power station under actual weather conditions of (2017), which is located south of Kirkuk in the district of Taza. The (K3) unit has a production capacity estimated at (255 MW) at maximum load; the unit consists of a gas turbine and an air compressor connected to the generator via a common shaft and operates in the Joule-Brighton simple cycle. The current study dealt with the analysis of the energy and exergy for the mentioned unit based on the law of conservation of mass, the first law, the second law in terms of the influence of each of the factors (ambient temperature, compression ratio, and relative humidity). Two methods were used to simulate the working data; the first is simulation programming by Excel, and the other is by using CHEMCAD software; the average data have been used in the simulation process for each month in that year to evaluate the performance of the unit K3. The simulation results showed that the combustion chamber represents the most important part in the exergy destruction, and the largest energy rate can be obtained from fuel as chemical, and the results of both methods showed maximum energy and energy efficiency was around (37.67%) and (36.89%), respectivel
Using Artificial Intelligence to classify osteoarthritis in the knee joint: Review
Get PDFKnee osteoarthritis (KOA) is a disorder that predominantly affects the cartilage in the human knee joint. In leg mobility, cartilage plays a vital function. In osteoarthritis The cartilage's top layer crumbles and impairs, causing excruciating agony. A patient with knee discomfort should see a doctor, who will assess the patient's clinical symptoms and recommend that the patient undergo radiographic imaging of the knee. In the therapy of osteoarthritis, clinical symptoms are quite important. Clinical symptoms and radiological criteria are used to do a proper examination of the disease. The breadth of the joint space, osteophytes, and sclerosis are all important radiographic criteria. Based on radiological data, the Kellgren-Lawrence (KL) scoring system is used to evaluate the severity of the condition. The KL system is the most widely used approach for grading Osteoarthritis (OA) in the knee joint into five separate classes, primarily to determine the severity of the illness. (Normal, Doubtful, Mild, Moderate, Severe).
In this review, various medical imaging technologies used to detect and identify knee osteoarthritis have been examined in detail. the automated detection of human illness recovery rates and the classification of Osteoarthritis in the knee using medical images utilizing a variety of medical image classification methods (such as magnetic resonance imaging, CT scans, and X-rays) have been investigated. This research paper included the many medical imaging procedures used.
This paper reviewed the classification methods of knee osteoarthritis (KOA) between2018-2021 using artificial intelligence techniques and showed their methods and results
Plan and Simulation Yagi Micro-Strip Antenna for 10GHz Applications
Get PDFThis paper shows a micro-strip antenna based on the yagi antenna principle, both singly and in a matrix. The suggested antenna can operate at a frequency of 10 GHz, which is in the X-band. The antenna specifications that were studied (Directivity, Gain, S11 Parameter, etc.). Two types of micro-strip Yagi antennas were simulated and compared; the first of which consisted of a single antenna and the second of which consisted of a matrix of two antennas. CST Microwave Studio Soft-ware 2019 was used for designing and simulation. The results were for antennas constructed for Gain (5.308dB) (9.682dB) and Directivity (6.016dB) (10.28), with the array antenna outperforming the first antenna by a wide margin
A Comparison Study among Many Methods for Solar PV Plant Design and Sizing for Technical College of Engineering /Mosul
Get PDFThe use of renewable energy in the recent years has become terrible, particularly solar PV plants. In this paper, a comparison study was made between the PV *SOL program and the MATLAB simulation program which used to calculate the design procedures for the solar plant laboratory inside renewable energy laboratory a Technical College of Engineering /Mosul. A New Zealand in method was depended for these calculation, including the environment effect and some factors related with solar system components. The results showed the best design with less components and cost .Finally both programs gave the same design
A Review on Analytical Methods for Piperazine Determination
Get PDFPiperazine compounds mediate their anthelmintic action by generally paralyzing parasites, allowing the host body to easily remove or expel the invading organism. It is an anthelmintic drug in human as well as in veterinary medicine. This review article represent the various analytical methods which has been reported for estimation of piperazine. The colorimetric , spectrophotometric techniques and chromatographic methods like HPLC and RP HPLC, GC, LC-MS, LC-MS/MS and another methods were reported