In this paper, recommended spiral passive micromixer was designed and simulated. spiral design has the potential to create and strengthen the centrifugal force and the secondary flow. A series of simulations were carried out to evaluate the effects of channel width, channel depth, the gap between loops, and flowrate on the micromixer performance. These features impact the contact area of the two fluids and ultimately lead to an increment in the quality of the mixture. In this study, for the flow rate of 25 μl/min and molecular diffusion coefficient of 1×10-10 m2/s, mixing efficiency of more than 90% is achieved after 30 (approximately one-third of the total channel length). Finally, the optimized design fabricated using proposed 3D printing method.

Plastic hinge properties play a crucial role in predicting the nonlinear response of structural elements. The plastic hinge region of reinforced concrete normal beams has been previously studied experimentally and analytically. The main objective of this research is to evaluate the behavior of the plastic hinge region of reinforced concrete deep beams and its comparison with normal beams through finite element simulation. To do so, ten beams contain six deep beams, and four normal beams, under concentrated and uniformly distributed loading, are investigated. Lengths in the plastic hinge region involving curvature localization, rebar yielding, and concrete crushing zones are studied. The results indicate that the curvature localization zone is not suitable for the prediction of plastic hinge length in reinforced concrete deep beams. Based on the results it can be stated that in simply supported normal beams the concrete crushing zone is focused on the middle span, but in simply supported deep beams by creating a compression strut between loading place and support, the concrete crushing zone spreads along the compression trajectory. The rebar yielding zone of simply supported beams increases as the loading type is changed from the concentrated load at the middle to the uniformly distributed load.

In this research, in order to investigate the effect of the piezoelectric patch which is used as a sensor or actuator in rotating flexible structures such as a helicopter blade, the free vibrations of the rotating rectangular sheet with and without the piezoelectric patch have been presented. First-order shear deformation theory is considered for plate displacement and piezoelectric field. Considering the effect of Coriolis acceleration, centrifugal acceleration and centrifugal in-plane forces, the equations of motion are derived from Hamilton's principle and the electromechanical couple equation is obtained from Maxwell's equation. For piezoelectric, two electrical conditions, open circuit and closed circuit, which are used in sensors and actuators, respectively, have been considered. The equations are discretized with the help of the NUMERICAL method of generalized differential squares and the matrices of inertia mass, eccentricity, Coriolis and stiffness matrix are obtained. Natural frequency values for beam and rotating plate have been compared in Abaqus software. Also, the values obtained from the NUMERICAL solution in MATLAB have been verified with articles and ABAQUS, which have high accuracy. The effect of parameters such as hub radius, rotation speed, sheet thickness, aspect ratio, piezoelectric patch thickness and applied voltage on the natural frequency of the system has also been investigated.

To evaluate the effects of different TREATMENTS on seed dormancy breaking of Notobasis, two separate experiments were conducted at Agricultural Sciences and Natural Resources University of Khuzestan, in 2017 with three replications. The first experiment included nine physical, mechanical and chemical TREATMENTS (control, surface scarification, intense scarification, one and two weeks of chilling at 4°C, soaking into hot water for two hours without scarification , soaking in 25°C distilled water for two hours with scarification  and acid treatment for six and 12 minutes) based on completely randomized designs (CRD). The Second experiment was hormone priming arranged as a factorial experiment based on completely randomized design with gibberellin concentrations (0, 200, 400, 600, 800 and 1000 ppm) and priming duration (12 and 24 hour) as the TREATMENTS. The highest seed germination (40%) obtained from 12 minutes of acid treatment. Results showed that seed germination reached to 100% after priming seeds with GA3 concentrations for 12 hours. However, increase the priming durations to 24 hours, significantly declined seed germination to 47% in 200 and 400 ppm of GA3 concentrations. The Increase of GA3 concentrations in 12 hours led to a linear reduction of T50 from 31 hours in 200 ppm to 19 hours in 1000 ppm). In 24 hours of priming treatment, T50 followed a Gaussian function and the highest T50 (92 hours) was obtained from 600 ppm. It is recommended to immerse the seeds for 12 minutes in sulfuric acid and prime with 400 ppm GA3 acid for 12 hours to break dormancy and increase the vigor index.

The combination of job content, work structure, technology, and environmental circumstances, and the employees' own abilities, resources, and requirements can create psychosocial hazards. All of these factors can influence work-related stress. There are several ways to treat this type of stress, one of which is pharmacological TREATMENTS. Stress medications reduce the symptoms of anxiety, such as fear, anxiety, and panic attacks, by acting on the brain and body. Anti-stress medications are not a definitive treatment for anxiety and stress disorders, but they can help reduce symptoms. Furthermore, new sociocultural and medical information has increased awareness of the importance of the workplace as a social predictor of health. Compared with women, men have a significantly lower level of assessment of their own health status, and women have a significantly lower indicator of physical functioning and vital activity than men of working age. There was a significant difference in the quality of life of the working-age population, depending on age and gender, in the groups of 21-27 years, 28-35 years, and 36-40 years. Among men of working-age with higher education, their own assessment of the state of health was significantly lower than that of men with specialized secondary education, and life activity was reduced, the presence of depressive, anxious experiences, and mental distress was characteristic, social contacts were limited, the level of communication was reduced, and the emotional state interfered with the performance of work or other daily activities. In the group of men with higher education, compared with women with higher education, the number of points on the SF-36 questionnaire scale, which reflects the psychological component as a whole, was significantly lower. A comparison of the parameters that characterize the quality of life, depending on the work place, revealed significant differences in the group of able-bodied women working in industrial enterprises and those of the service sector.

Introduction One of the most important changes occurs in the body of a pregnant woman is postpartum milk secretion. If the baby is not fed from this milk or the milk is not drained from the mother’ s breast in any other manner, some maternal problems will be arised. There are numerous drug and non-drug interventions to suppress lactation after childbirth and relief of its symptoms in women. This review report aimed to investigate the literature involved in this field to offer a single protocol in such cases. In the search strategy, we used the keywords of suppression of lactation, TREATMENTS for suppression of lactation, Drugs in breastfeeding, Lactation after Perinatal, Neonatal, or Infant Loss by referring to the valid scientific databases, including Sciencedirect, Pubmed, Elsevier, Cochrane, and about 26 relevant papers were received and analyzed. Conclusion Currently, the recommended methods for the cessation of lactation in women with necessary indications are not conclusive for all involved women. Identification and applying different methods to suppress lactation in mothers who have been banned to use milk for various reasons, can significantly help them to better manage suppression of lactation. Based on the relevant systematic review study, it seems that in case of low maternal milk secretion, it is better to use non-pharmacological methods to suppress lactation because of their fewer side effects; but the most effective TREATMENTS are the use of Bromocriptine and Cabergoline. But still the most common treatment for the suppression of lactation is administration of Estrasiol.

In this experiment, the effect of garlic (GP) and tomato (TP) powders on performance, blood parameters, sex differentiation and hatchability of Ross-308 broiler breeders were examined and compared with In-Ovo injection of garlic or tomato hydroalcoholic extracts. In first experiment, 375 hens and 25 roosters (47 wk.) were randomly allocated to 5 TREATMENTS and 5 replicates, for 4 weeks. TREATMENTS included: 1) basal diet (control), 2 and 3) basal diet+ 2 and 4 percent of GP, and 4 and 5) basal diet + 2 and 4 percent of TP, respectively. In second experiment, 200 hens and 20 roosters were randomly allocated to 2 TREATMENTS including 1) basal diet and 2) basal diet + 4% of TP (selected treatment of the Exp. 1) in 5 replications from 52-56 wk. During incubation period, experimental TREATMENTS included: 1) control group, 2) eggs from hens fed 4% TP, 3) In-Ovo injection of physiological serum and 4 and 5) In-Ovo injection of 0.1 and 0.3 ml of garlic and tomato hydroalcoholic extracts. The results of first experiment, adding garlic and tomato powders was not significant on egg qualitative traits and blood parameters (P>0.05). All In-Ovo injection TREATMENTS increased fertility percentage (P<0.05). The second experiment results showed that TREATMENTS had no significant effect on the percent of males and females (P>0.05). In general, addition of 4 percent tomato powder to broiler breeders in comparison to In-Ovo injection of hydroalcoholic extracts of garlic and tomato, did not increase male 1-d-old chicks’ percentage of hatched chicks.