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Buried concrete tanks serve as critical components of public and military infrastructure, where structural damage can trigger severe social, security, and environmental crises. Consequently, designing these tanks to withstand shock loads from explosions is of paramount importance. Additionally, the behavior of layered clay soils under such loading conditions requires detailed examination. This study investigates the influence of burial depth on the performance of concrete tanks subjected to explosive loads in layered clay soils. The analysis was conducted using AUTODYN and FLAC 2D finite element software. Concrete tanks buried at depths of 3, 6, 8, and 10 meters were analyzed under surface explosions generated by 50, 100, and 200 kg of TNT, with defined pressure and distance parameters. The soil properties, structural characteristics, and internal fluid pressure were incorporated into the model. Results indicate that increasing the burial depth significantly reduces the displacement of the tank roof and floor due to the dissipation of explosion energy in the surrounding soil. For instance, with a 50 kg TNT charge, increasing the burial depth from 3 meters to 6, 8, and 10 meters resulted in roof displacement reductions of 54%, 70%, and 78%, respectively. These findings demonstrate the critical role of burial depth in enhancing structural resilience against explosive loads and mitigating damage.
 

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Background: Pseudomonas aeruginosa is considered an opportunistic pathogen; several reports indicate that the organism can also cause infections in healthy hosts. Four effector proteins have been described in P. aeruginosa: exoU, exoS, exoT, and exoY. These genes that are translated into protein products related to type III secretion systems. Materials and Methods: A total of 134 samples were isolated, and P. aeruginosa was identified using biochemical tests. Bacterial genomic DNA was extracted, and the presence of the exoSand exoUgenes were detected by PCR. Biofilms were formed by culturing P. aeruginosaon glass slides in rich medium. Results: The exoU(73%), exoS (62%) genes were detected from infections caused by P. aeruginosa in urinary tract infection patients. Among the 119 strains isolated from patients with urinary tract infections. Conclusion: An improved understanding of virulence genes and biofilm formation in P.aeruginosa may facilitate the future development of novel vaccines and drug treatments.

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Abstract MSRox is a wheeled mobile robot with two actuated degrees of freedom that has smooth motion on flat surfaces, and has the capability of climbing stairs and traversing obstacles and flexibility toward uphill, downhill and slope surfaces. MSRox with 82.916 cm in length, 54.10 cm in width and 29.249 cm in height has been designed to climb stairs with 10 cm in height and 15 cm in width; nevertheless, it has the capability of climbing stairs up to about 17 cm in height and unlimited width. In this paper, the motion systems and the capabilities of MSRox are described. Furthermore, experimental results of stair climbing and comparison of the results with others are presented.

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During the recent years, the use of oilseed meal as a protein rich by product, Meal of oil seed has been introduced to improve the Functional properties to Food Formulations. Chemical composition (protein, fat, moisture and ash) Functional properties (protein solubility, emulsion capacity, water holding capacity, fat absorption and foming capacity) were determined in meal  hazelnuts, peanuts, sesame, pistachio and the effect of different concentration of salt on these properties was investingated. For this purpose, Nacl Salt concentration equal consist of 0%, 1%, 2%, 3% and 4% were used in a completely randomized design with three replications. The results of this study showed that by increasing salt concentration, protein solubility, foming capacity, oil absorption increased significantly (p≤0.05). And most active emulsifying properties and water holding capacity was for concentration of 2%. Activity foaming, foam stability and oil absorption is increased by increasing salt concentration. Finally, according to the results of this study can be oilseed meal (peanuts, hazelnuts, sesame and pistachio) has high protein content and given the good Functional properties of the protiens, makes it ideal substitutes for other dietary proteins.

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High-performance concrete (HPC) exceeds the properties and constructability of normal concrete. Normal and special materials are used to make these specially designed concretes that must meet a combination of performance requirements. Special mixing, placing, and curing practices may be needed to produce and handle high-performance concrete. Extensive performance tests are usually required to demonstrate compliance with specific project needs (ASCE 1993, Russell 1999, and Bickley and Mitchell 2001). High-performance concretes are made with carefully selected high-quality ingredients and optimized mixture designs; these are batched, mixed, placed, compacted and cured to the highest industry standards. Typically, such concretes will have a low water-cementing materials ratio of 0.20 to 0.45. Plasticizers are usually used to make these concretes fluid and workable. High-performance concrete has been primarily used in tunnels, bridges, and tall buildings for its strength, durability, and high modulus of elasticity. High Performance concrete (HPC) are a class of fiber cement composites with fine aggregates that exhibit tensile strain hardening response under uni-axial loading. These materials are characterized by pseudo-ductile tensile strain hardening behavior and multiple cracking prior to failure. This figure emphasizes the transition from brittle concrete to quasi-brittle FRC (strain softening behavior after first cracking) to ductile HPFRCC with strain hardening behavior after first cracking. In recent years, a new class of HPFRCC has emerged as ECC. Engineered Cementitious Composite (ECC) which was developed at University of Michigan had a typical moderate tensile strength of 4-6 MPa and ductility of 3-5%.Since there is not enough available information to give mechanical characteristics and also to calculate the mean, standard deviation and coefficient of variation, some statistical evaluations are necessary to obtain accurate results of the effect of inclusion of PP fiber on absorbed energy and impact resistance of concrete. Concrete is a heterogeneous material, and that is why results obtained from several tests are often significantly scattered. There is a few quantitative statistical data about the effect of PP fiber on compressive, flexural strength of HPC at the other research work; therefore it shows a necessity to study the effects of PP fiber on mentioned parameters.Gotten data were statistically analyzed. 240 concrete specimens were prepared in three series with different mix designs, containing 0.5, 0.75 and 1 percent of PP fibers. Twenty 100×100×100mm cubic specimens, twenty 320×80×60mm beam specimens andforty150×64mm discs were cast from each mixture. Cubic specimens were used to determine the compressive strength, beam specimens were tested to obtain flexural strength and cylindrical cutting specimens (discs) were subjected to the drop-weight test following the ACI committee 544 to determine impact strength of mixed concretes. Statistical analysis done based on these experimental tests showed that in comparison with data of impact strength, data of mechanical properties have less dispersion. Also while increasing percentage of fibers, dispersion in data increases. According to results of compressive strength test on cubic specimens, adding fibers to specimens increased the coefficient of variations of compressive strength. The coefficient of variations of compressive strength for HPFRCC was increase from 4.96 % to 8.42 %. Also Statistical data for flexural strength are almost normally distributed. Mean flexural strength in HP-1 group (1% fiber) was 6.24 MPa, which is 29 % and21 % more than HP-0.5 group (0.5 % fiber) andHP-0.75 group(0.75 % fiber), respectively. HP-1 group's coefficient of variation is 9.88 % which is 11 % and 8 % more than the same parameter in HP-0.5 and HP-0.75 groups, respectively.

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Dielectric barrier discharge (DBD) plasma actuators are one of the new devices for active flow control, which has received substantial attention during the last decade. The performance of the actuator is optimum when it induces the highest velocity per unit of power consumption. Since the induced velocity and the power consumption of the actuator depend on many different variables, finding the optimal set, which results in the best performance, is of immense importance. In this paper, in order to optimize the performance of these actuators, at first, by using full factorial design of experiments the effect of electrical variables (including voltage and frequency) and geometrical variables (including the gap between electrodes, dielectric thickness, and covered electrode width) on induced flow velocity and power consumption in steady actuation is experimentally investigated. Then, by using the multi-layer perceptron neural network, a model is created for the ratio of induced velocity to power consumption. The model is validated both statistically and experimentally. The results indicate that the coefficient of determination for training and test data is higher than 95 percent. Finally, the surrogate model is optimized by genetic algorithm and the optimal value of electrical and geometrical variables is determined. In order to validate the result, an actuator is designed based on the optimal set of variables and it’s ratio of velocity to power is measured to be
29.71 (m/s)/(kW/m). The difference of 3 percent between the measured and the predicted value demonstrates high accuracy and correctness of the proposed model and method.

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In this study, the impact strength multi-layer slabs reinforced by steel and nylon fibers, as well as the combination of these two fibers under the influence high velocity projectile, was investigated. To achieve this goal, 30 slabs one layer and three layers with dimensions 40 *40 * 7.5 cm were reinforced by 1% of the fiber, 30 slabs made 10 different models , each with 3 models Sample was made. A non-fiber model, as a control sample, and other slabs all have a constant volume 1 percent fiber, the difference being in the type and composition the fibers in different layers the slabs. The slabs were made with Kalashnikov , PK Kalashnikov and Dragunov guns at a distance 50 meters tested. In the test the projectile's encounter, three parameters penetration depth, area the damaged front and rear area and the volume damaged area in the samples were calculated and compared. Based on the results obtained, steel fibers can increase the resistance concrete slabs against the impact the projectile and reduce the surface area and volume the damaged area and significantly reduce the penetration depth. Steel fibers at best reduced the penetration depth 64 % in the kalashinkov gun and reduced the area and volume the damaged area in the dragunov weapon by 88 % and 98 % respectively. Also, steel fibers can prevent crack expansion by increasing the bond strength, provided that the fibers the nylon have a much lower impact than steel fibers. the nylon fiber could reduce the penetration depth and demolition area the sample in kalashnikov weapon by 37 % and 59 %, respectively, and reduce the volume damaged area in the dragunov weapon by 84 %, respectively. In addition, in this research, 12 samples cubic pressure were placed on the side 10 cm, 12 cylindrical tensile samples 10 × 20 cm and 12 small flexion beams with dimensions 32 *8 *6 cm and tested. It was observed that steel and nylon fibers cannot have a significant effect on the compressive strength, As a result the addition one percent the steel fiber, nylon and a combination these, this increase is 7.7, 2.6 and 6.4 % , which can be neglected. but steel fibers can significantly increase the tensile and flexural strength the concrete. addition one percent the steel fiber could create a 2.5 – fold increase in tensile strengths and increase the resistance 2 - fold in bending specimens. This is the nylon fibers do not have a significant impact on the tensile and flexural strength. Adding one percent the nylon fibers in the tensile and flexural samples could increase the resistance these specimens by 16 % and 24 % respectively. It was observed in the bending test of beams that steel and nylon fibers can be bent by bending in the cracks to increase the shape the weld so that the change in the maximum area the beam with the addition one percent steel fiber from about 4 mm in the control sample increase to about 25 mm.

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Seventy-five isolates of the fungus Zymoseptoria tritici, collected from seven wheat producing provinces in Iran, were studied using the molecular markers ISSR and SSR to determine its structure and genetic variations within its populations. Results indicated that the populations of the causal agent of this disease had a relatively high level of genetic diversity, with the total average genetic diversity (Ht) of 0.34 in the studied samples. When the genetic diversity was divided by the genetic diversity within and between the tested fungal populations, intra-population and inter-population genetic diversities were, respectively, 69 and 31%. Moreover, results showed that there was a strong gene flow between the studied provinces. The maximum genetic diversity among the studied provinces was observed in Ardebil and Khuzestan Provinces, and cluster analysis also revealed that the fungal populations of these two provinces had the greatest similarity with each other.