In Iran, as one of the developing countries with long maritime borders, construction of wharves according to fundamental role in the development of the country is important. The wharves including sheet pile due to extraordinary costs in manufacturing, performance problems and specific designs are very important. In Iran, due to lack of timely periodic inspections, disprotecting the wharves after the construction and corrosive environmental conditions in Persian Gulf and Oman Sea, these structures are severly damaged during the performance period. In this study, we assessed damages to Lengeh Port wharf and then appropriate solution for repairing and retrofitting is provided. Proceedings that have been done for repairing are: dismantling existing fender piles and creating a new row over the sheet pile, using steel jacket and ultimately using batter piles over the wharf. In this paper, ABAQUS software for numerical modeling used, and numerical models were studied in various conditions. Kobe earthquake acceleration was used for seismic loading. At the end, comparative diagrams about repairing methods mentioned investigate the wharves in terms of bending moment, shear force, lateral load capacity and deformation. Finally the best choice is selected. 

In this paper a statistical analysis of literacy (district wise, gender wise) of Rajasthan is given. A comparison between literacy rate of India and Rajasthan on the basis of area and gender wise is explained.

In this investigation, the failure analysis of a gas turbine blade of an Inconel 738 (IN738) nickel-base superalloy was performed. The blade came from a 168 MW turbo-gas unit with 12,757 h of service. The analysis was done on a Scanning Electron Microscope (SEM). The results; show changes in the microstructure as recrystallization of the grains, degradation of the γ' phase, and the incidence of contaminant scale on the surface of the material. The chemical composition analyzes of the deposits on the surface of the blade reveals the presence of elements such as sulfur, chlorine, sodium, potassium, and calcium. 

In order to study the diffusion process of drug flow field of needle-free syringe in subcutaneous tissue in more detail, and understand the effect of jet velocity on injection effect. In this paper, the high pressure jet flow field of the needle-free syringe with cylindrical nozzle was simulated by Fluent. The relationship between the minimum jet velocity to penetrate the skin and the diameter of the nozzle was studied.  And the law of change of the drug diffusion process was studied under the jet velocity varies with 160~200m/s. The results show that the drug diffuses in a sphere with the end of the hole as the center. With the dose of the drug gradually increases, the diffusion center of the drug will gradually move to the surface of the skin. The higher jet velocity, the greater the volume fraction of the drug, that is, the better injection effect of the needle-free syringe. Under the condition of higher jet velocity, the flow velocity and pressure of the drug is larger, although its decreases faster, the diffusion distance in the subcutaneous tissue is longer. But the range of high pressure not increase significantly. So it will not bring more pain to the patients.

With the vigorous development and iterative update of artificial intelligence technology in the world, the intelligence of intelligent connected vehicles and autonomous mobile robots and the technological innovation brought by them have attracted more and more attention. As one of the core algorithms and key technologies in the decision-making layer of intelligent connected vehicles and autonomous mobile robots, path planning algorithm directly affects the intellectualization of autonomous mobility of intelligent devices. Intelligently made cars and autonomous mobile robots are presented in this paper how to use it in the global path planning based on TEB local path planning algorithm for dynamic obstacle avoidance were studied, and given TEB (Timed Elastic Band) algorithm's lack of improvement method is proposed, to make it more flexible to adapt to the surrounding environment and planning a more secure and changeable path.

With the development of science and technology, the accuracy of measuring instruments is higher and higher, and the positioning is faster and more convenient. In particular, the application of UAV technology to the field of engineering measurement provides greater convenience and advantages for the development of the project. This paper mainly analyzes the advantages and disadvantages of UAV in construction engineering, road engineering and infrastructure construction, and puts forward the joint application of UAV and conventional measuring instruments in engineering construction, so as to improve measurement accuracy, reduce measurement cost and increase visibility.

The main objective of the paper is to study the long-term trend of AOD in Egypt during the period from 2000 to 2021. The daily data are collected using the Moderate Resolution Imaging Spectroradiometer (MODIS). The trend analysis of the AOD is performed using the Mann-Kendall test. For estimating the true slope of an existing trend the Sen's nonparametric method is used. The trend analysis is carried out for two cities that differed in the degree of pollution and the climate, Cairo, and Qena. The results show, at significant level alpha = 0.05, AOD trend in Cairo shows a decreasing trend for different time scales, monthly, seasonally, and annually. While in Qena there is a negative trend only for the monthly values, and there are no trends for the seasonal and the annual values. The slopes of the trend in Cairo are -0.00015, -0.00047, and -0.00187 for the monthly, seasonally, and annually trends, respectively. While in Qena it is -8.4E-05 for the monthly trend. The negative trends in Cairo may reflect the effort made for decreasing the air pollution from the traffic and industrial sectors. While the atmosphere of Qena may be represent the background atmosphere.

Coil springs are widely used in various occasions. However, when the end point of the spring end is stressed, the deformation of any position of the spring has not been deeply studied. Through the stress analysis of the spring, using Mohr integral, the restraint moment to keep the end of the spring horizontal was derived, based on the steady-state restrained bending moment, the theoretical calculation formula of the end stiffness of the coil spring and the theoretical calculation formula of the deflection at any position of the coil spring were deduced. Final, the relative deflection of the spring was verified by Ansys, the deviation between the theoretical value and the calculated value was within 1%. The analytical formula of the relative deflection of the spring is correct.