فهرست مطالب akbarzadeh

Air quality prediction is highly important in view of the health impacts caused by exposure to air pollutants in urban air. This work has presented a model based on support vector machine (SVM) technique to predict daily average carbon monoxide (CO) concentrations in the atmosphere of Tehran. Two types of SVM regression models, i.e. -SVM and -SVM techniques, were used to predict average daily CO concentration as a function of 12 input variables. Then, forward selection (FS) technique was applied to reduce the number of input variables. After converting 12 input variables to 7 using the FS, they were fed to SVM models (FS-(-SVM) and FS-(-SVM)). Finally, a comparison among SVM models operation and previously developed techniques, i.e. classical regression model and artificial intelligent methods such as ANN and adaptive neuro-fuzzy inference system (ANFIS) was carried out. Determination of coefficient (R2) and mean absolute error (MAE) for -SVM (-SVM) were 0.87 (0.40) and 0.87 (0.41), respectively, while they were 0.90 (0.39) and 0.91 (0.35) for ANN and ANFIS, respectively. Results of developed SVM models indicated that both FS-(-SVM) and FS-(-SVM) regression techniques were superior. Furthermore, it was founded that the performance of FS-(-SVM) and FS-(-SVM) models were generally a bit better than the best FS-ANFIS and FS-ANN solutions for short term forecasting of CO concentrations.

Wear is one of the most detrimental mechanisms which can affect the performance of many industrial systems. TiN coating due to its unique properties such as resistance to wear, oxidation, and heat is widely used in mechanical elements. In this research, TiN coating has been coated on steel substrate using a physical vapor deposition method. The coating’s properties have been obtained using nano-indentation test. Pin on disk wear test has been conducted while the disks are coated. The tests are conducted under three different loads and different speeds. It was shown that the samples with thicker coating show a better tribological performance. In this study, the relationship between wear and entropy has been investigated in order to predict the wear rate for different materials by predicting temperature. Also, temperature changes over time were predicted in two states of with and without coating. It was also shown that the samples with thicker coating have better wear resistance. One of the innovations of this research is the ability to establishing a correlation between the wear rate and produced temperature.

This paper is devoted to numerical simulation of steady and unsteady natural heat transfer convection of nanofluids in an eccentric porous annulus. Governing equations including mass, momentum, and energy conservation are discretized by means of finite difference methods and they are solved by Alternating Direction Implicit (ADI) method and Successive over Relaxation (SOR) method. In the present study, the effect of Rayleigh number, nanoparticle volume fraction (in the range of 0 to 4 percent), Darcy number, porosity coefficient, and eccentricity ratio on average Nusselt number, local Nusselt number, streamlines, and isothermal lines are investigated. The results show that by increasing Rayleigh number, the porosity coefficient, and the nanoparticle volume fraction, the heat transfer rate increases. Reducing the Darcy number reduces the permeability of the porous medium and therefore reduces the heat transfer. In unsteady conditions, by increasing the amplitude of the inner wall temperature fluctuation, (due to the increase of the temperature gradient between the two walls), the average Nusselt number increases, and the frequency of the variation of the average Nusselt number is consistent with the inner wall temperature variation frequency.

Bone healing is still a great challenge in orthopedic surgery and clinical practice. There is a dearth of research investigating the effect of Zeolite/Collagen (ZC) nanocomposite on bone regeneration. In the present study, a critical segmental defect of the rabbit femur was repaired using defects in femurs repaired by ZC nanocomposite, and the effects were examined histologically. In total, 45 rabbits at seven months of age weighing 3.5 kilograms were utilized in this study. After making the bone defects, all animals were randomized into three groups (n=15). In a normal control group (NC), a defect was created, no intervention was made, and the skin incision was sutured. On the other hand, in the ZC group, the nanocomposite of ZC was placed into the created defect. In the hydroxyapatite group (HA), the hydroxyapatite was placed into the created defect. The samples were collected on days 15, 30, and 45 postoperatively and assessed histopathologically. The mean scores of the index of the union were compared and considerable alterations were observed in this regard in the experimental groups (P<0.05). The values of the index of spongiosa demonstrated that on day 15, it was the highest in the ZC group (2.2) and lowest in the HA and NC groups (0.6). Moreover, the values of the index of bone marrow demonstrated no noticeable alteration among the values of the index of bone marrow in the experimental groups (P>0.05). The findings of this study demonstrated that ZC nanocomposite might be considered for reconstruction in bone damages. It seems the ZC nanocomposite bears a crucial capability in the reconstruction of bone damages and might be used as a biological frame in bone damages.

In order to qualitative evaluation of the sediment samples, the samples were seasonally taken in the Tiab basin for one year from autumn 1994 to summer 1995. Four stations were considered to be sampled that the first was between the south and north Tibet, the second station is located to the south Tiab and the third station located at the subbranch of the canal and the station 4 at the branch of estuary. Two ecological indicators based on macrobenthos community were used to calculate ABC and w-statistic indices. Spatial distribution of macrobenthos density at four stations showed that station 4 with an average of 1467 individual per square meters had the highest density, followed by station 3, 1 and 2, respectively, with 652, 393 and 223 individual per square meters in ranking are next. Amount of weight-based indices showed that the frequency curve in the ABC index is located on the top of the weight curve at all four stations and the w-statistic index with the lowest value is -0.433 at station 2. The results of this study showed that, although at stations far from shrimp breeding grounds, the diversity is more than those are close to shrimp farms, but biodiversity figures indicate that all areas are affected by effluent from shrimp pools.

In the present work, the effects of blades number on the performance of two stages axial gas turbine have been investigated numerically. Geometry characteristics of the gas turbine have been chosen based on the F5 model of General Electric Company. First, the blades geometry and fluid passages are initially generated due to the real dimensions of the turbine and the generated geometry is networked. Then, the final model of the turbine is generated by gridding blades which set beside each other. Then, Ansys CFX software is used to solve the 3D Navier-Stokes equations in the generated computational domain. The shear stress transport turbulence model has been employed in order to determine the wall effects on the turbulent flow. Before any change in the main turbine, a numerical study was performed and a comparison was conducted between the numerical results and experimental results measured in the power station which the results show a good level of agreement between them. The number of blades of each row has been changed in order to investigate the effects of blade number on the turbine efficiency. The results show that the power generation of the turbine and its efficiency are increased by 0.83% and 0.81%, respectively by an increase in the number of second-row stator blades from 62 to 71 blades.

Traffic operations in the congestion parts of road networks are very complicated and a comprehensive analysis of interactions between vehicles is essential for understanding the bottleneck event and providing solutions for addressing the issues. This involves the development of traffic theories to explain driver behavior on the microscopic state, that one of its main elements is lane changing behavior. In this research, the effects of vehicles lane changing before the right turn for exiting from the intersection and after the right turn for merging into the next urban corridors, in different percentages of the right turn traffic volume in the three well-known intersections namely "Felezi-Mellat", Simin, and Sadoogh " intersections in Isfahan city, one of the most congested city in central part of Iran, using Aimsun software were studied and evaluated. The data collection method was done using videotaping technic and peak hour of the intersections was recorded. Then the geometric and traffic characteristics of the intersections were extracted using field observations data extraction from the recorded films. For the aim of the research, two main parameters of the Aimsun lane-changing model, including distance zone 1 and distance zone 2, were estimated with proposed values. In the end, using Synchro software, signalized intersections timing were optimized under different scenarios. Having used the proposed timing schemes, the intersections were modeled in Aimsun software in order to evaluate the traffic measure of effectiveness under defined scenarios. The results showed that using the proposed values  instead of the default values of Aimsun lane-changing model changed the value of travel time in the aforementioned intersections of the Felezi-Mellat, Simin and Sadoogh by (1) to (-9), (0) to (-15), and (0) to (-5) percent, respectively.

Salmonella spp. are major causes of food-borne disease and have been identified among many diarrheal outbreaks. The major aim of the current investigation was to evaluate the class 1 and 2 integrons and antibiotic resistance pattern in Salmonella enterica isolated from diarrheal food-borne outbreaks in Iran. 

This study was carried out on 115 diarrheal feces samples obtained from food-borne outbreak in 2016 in Iran. Antimicrobial resistance patterns of 27 isolated S. enterica seovars and presence of class 1 and class 2 integrons in the serovars were investigated using conventional and molecular methods. Results were statistically analyzed using SPSS software v. 21 and Chi-Square test.

Overall, 27 S. enterica were characterized as 14 S. Paratyphi C, 7 S. Enteritidis, 5 S. Paratyphi D, and 1 S. Paratyphi A serovars. Results of molecular assay showed that class 1 integron presented in all and class 2 integron in three strains. All isolates with class 2 integron genes were resistant to almost all the antimicrobials.

Most studied Salmonella strains from diarrheal food-borne outbreak of Iran in 2016 were multiple resistant to the highlighted antimicrobials. Knowledge about risk factor involving the salmonellosis and their control measures could help the national authorities to prevent the outbreaks. Further comprehensive studies with larger sample sizes are necessary to acquire more data about risk factors of multiple resistant Salmonella outbreaks in the country.

DOI: 10.18502/jfqhc.6.3.1384

In order to evaluate the healing effect of eugenol and other nanofibers, 100 male Wistar rats (200±10 g) were used with 14-15 weeks of age in this study. All of the male rats were transferred in the standard cages under controlled exposure conditions in a 12:12 h light/dark cycle with a constant temperature about 22±2 oC. In addition, the male rats were fed with pellets. Firstly, anesthesia process was performed by 2% xylazine hydrochloride (10mg/Kg/IP) and 10% ketamine hydrochloride (100mg/Kg/IP), and then the rats were placed on the operating table. Then the dorsal surfaces of the rats’ skin to ileum were scrubbed and prepared as the next step. A circular wound (with a 7 mm diameter) was created by a 7 mm sterile biopsy punch. All 100 rats were divided into four groups (n=25) randomly named as control, nano zinc oxide (ZnO), eugenol nanofibers, and polycaprolactone groups. After that, they were divided into five groups regarding the wound closure rate in days 3, 5, 7, 14, and 21. Then, the wound dressings were placed on the wounds and renewed every 24 h. At the end of days 3, 5, 7, 14, and 21, the relevant tests, such as histopathology, were conducted by removing the tissue volume using a biopsy punch, and then decapitation process was performed on the rats. It was obvious that eugenol nanofiber showed the best granulation tissue by the production of collagen. Further studies are being performed on wound healing by eugenol nanofiber.

Heavy metals are one of the main groups of environmental pollutants; enter the aquatic environment through natural and human activities. These metals may accumulate in aquatic organisms including fish and be a potential danger to the health of the ecosystem and living organisms, especially for human beings. In this study, the amount of heavy metals including copper, zinc, and nickel was investigated in the muscle tissue of Caspian kutum (Rutilus frisii Kutum), and Caspian Vimba (Vimba vimba persa) from Bandar Anzali by atomic absorption. Mean concentrations of heavy metals including copper, zinc and nickel in dry weight of muscle tissue in Caspian kutum were 7.47 ±1.26, 18.96 ±1.49 and 2.68± 0.23, μg/g, respectively. These amounts were 10.41±2.26, 32.01 ±6.82, and 2.50 ± 0.30 ug in dry weight in the muscle of Caspian Vimba for the copper, zinc and nickel, respectively. The concentration of heavy metals in muscle tissue was less than the permitted concentration of international standards, except for nickel that was higher than the World Health Organization (WHO) and Food and Drug Administration (FDA) standards. Potential risk and hazard indicators were less than 1 for both age groups of adults and children, so there is not much danger to consumers. Due to the importance of the quality of fish used for the inhabitants of northern Iran, pollutants in the area, especially heavy metals, should be continuously monitored to control the amount of contaminants in consumer communities.

Four components were used to identification the effective physical-chemical factors of water on the variations of dominant fish families. The total variation of the variables was concluded 94/17 % and 90/5%, related to the loaded components in artificial reefs of Bandar-E-Salakh and Bandar-E-Bostaneh respectively.Assessment of the loaded factors in each of the components were identified that nitrate, nitrite, phosphate and chlorophyll a factors with positive load and temperature and salinity with negative factor load as the most important factors affecting the demographic changes of some fish families. Temperature, pH, nitrate, nitrite and phosphate were diagnosed parameters for water quality in two areas based on PCA results. The results of this study showed that nutrients (nitrate, nitrite, phosphate and chlorophyll a) had great influence on structure of fish in artificial reefs, that together with the physical-chemical parameters of water to impact on the chain and food web of fish and fauna of these ecosystems, ultimately.

The ionic contents, pH and osmolality of seminal plasma and their relationships to sperm motility indices (sperm motility duration and percentage of motile sperm) were evaluated in bester. Semen was collected from six bester specimens and their seminal plasma was evaluated. The seminal plasma contained 54.5±2.8 mM sodium, 22.33±2.5 mM chloride, 7.1±1.2 mM potassium, 3.55±0.6 mM calcium and 0.58±0.09 mM magnesium. The result shows that Na+, Cl- and K+ (54.5±2.8, 22.33±2.5 and 7.1±1.2 mM, respectively) were predominant ions in bester seminal plasma like other sturgeons. However the concentrations of K+, Ca2+ and Cl- in bester seminal plasma were higher than those reported in beluga and sterlet as parental species. The mean pH and osmolality of seminal plasma were 8.09±0.34 and 127.6±20.8 mOsm kg-1, respectively. A significant negative regression was observed between osmolality and percentage motility (r=- 0.893).

In the present study, for the first time, the locally power-law preconditioning method for analyzing steady and unsteady incompressible turbulent flows around airfoils in high Reynolds numbers is utilized. In this method, the governing equations are modified by altering the time derivatives terms. The governing equations are discretized by the numerical method derived from the cell-centered Jameson’s finite volume algorithm. In addition, for solving the unsteady flows, an implicit dual-time procedure and for simulating the turbulent flows, Baldwin and Lomax algebraic model have been employed. The computations are presented for steady and unsteady turbulent flows around NACA0012 and ONERA-A airfoils at various angles of attack and Reynolds number. Results presented in the paper focus on the velocity, pressure and eddy viscosity profiles, distribution of pressure coefficient, lift and drag coefficients and the effect of the power-law preconditioning method on the convergence rate. The numerical solution indicates an acceptable accuracy with the aid of the power-law preconditioning method in both steady and unsteady turbulent flows for high Reynolds numbers. Moreover, using the power-law preconditioning method improves the convergence speed significantly and reduces the iteration number of solution steps and central processing unit time simultaneously in both steady and unsteady flows.

Studying on employees' morale is one of the effective ways to assess the success or failure of organizations for achieving their goals. 
Objective the present study aimed to investigate the impact of managers’ organizational trust and managerial competency on the students' organizational morale. This research is a descriptive-analytical and survey-based study. Of total 3000 students, 218 were selected using probable sampling method. The instrument used in this study was a fill -field questionnaire. Data were analyzed using SPSS 20 and Regression analysis. The results showed the moderate level for morale and managerial competency and low level for organizational trust. The correlation coefficient for organizational morale with organizational trust and the perception of management competence was 0.65 and 0.61, respectively which suggested a positive and significant relationship (P = 0.001). Organizational trust and the perception of managerial competency have a significant effect on the organizational morale; each and every one of them, has explained a degree of variance for organizational morale. Regarding that the organizational morale of the majority of students is moderate, and that the majority have a low organizational trust, other factors seem to involve in assessing the morale and it requires further studies in this regard.

Stability and stabilization of impulsive switched system have been considered in recent decades, but there are some issues that are not yet fully addressed such as actuator saturation. This paper deals with expo-nential stabilization for a class of nonlinear impulsive switched systems with different types of non-vanishing uncertainties under the norm-bounded control input. Due to the constrained control signal, the local stabilization is here considered. To establish local stabilization criteria, at first, based on multiple Lyapunov functions technique and minimum dwell-time approach, sufficient conditions for a more gen-eral model of impulsive switched systems are proposed. These conditions are also local which increases the chances of achieving the goals compared to existing global techniques. Also, unlike conventional mul-tiple Lyapunov function techniques, this paper considers converging to a sufficient small ultimate bound because of non-vanishing property of the uncertainties. Secondly, the proposed conditions for the general model are applied to the given system and the sufficient stability conditions are formed into linear and bi-linear matrix inequalities. After these, to achieve the parameters of stabilizing control signal along with the largest convergence area and smallest ultimate bound, an optimization problem is proposed. Finally, some illustrative numerical examples are presented to demonstrate the proposed approach.

Molybdenum disulfide (MoS2) is one of the most widely used solid lubricants. In this study, MoS2-Cr composite coatings were deposited onto AISI 1045 steel substrates by direct-current magnetron sputtering. The MoS2/Cr ratio in the coatings was controlled by sputtering the composite targets. The coatings were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDX), and nano-indentation and nano-scratch techniques. The tribological behavior of the coatings was investigated using the pin-on-disc test at room temperature. The results showed that the thickness and the hardness of the coating were 6 µmand 850-1300 HV, respectively. The degree of the crystallization of the composite coatings was enhanced with increasing the Cr contents. The incorporation of Cr into MoSx coatings resulted in the considerable improvement of coating adhesion and hardness. The optimum doping level for MoS2-Cr coatings to show the best tribological propertie was 13 atomic percent. The main wear mechanisms of the coating were delamination, tribochemical and abrasive micro cracking

In recent years, taking advantage of LARG supply chain (SC) paradigm, a combination of four paradigms (clean, agile, resilience and green) has been increasingly employed. For capturing the advantages of LARG in SC, companies needed to recognize proper practices and implement them with appropriate planning and infrastructure. However, one of its deficiencies is lack of proper method in the prioritization of the LARG paradigms and practices as well as explanation of their relationship. Hence, the main contribution of this paper is to present a comprehensive approach to deal with inherent vagueness and uncertainty of the human decision process using fuzzy set theory, it aims to provide a quantitative basis via a hybrid fuzzy multi-criteria decision making (FMCDM) model that will make easy data collection and shall decrease the calculation. This model combines fuzzy decision making trial and evaluation laboratory (DEMATEL) with fuzzy analytical network process (ANP), i.e. FDANP, to determine the global weights of paradigms and practices and develop their impact relation map. Finally, the implementation of practice was prioritized by using interpretative structural model (ISM). It should be noted that, to measure the efficiency of this method, Iranian dairy industries as a case study was considered. With the help of obtained results, it can be determined the most and the least important practices and paradigms and prioritization of their implementation.

Present study is a numerical solution for incompressible fluid-elastic structure interaction by use of immersed boundary method. The solid phase is an elastic filament hinged on rear of a rigid cylinder in the presence of fluid flow. The purpose of this study is investigation of interaction of flexible filament and rigid cylinder. In the immersed boundary method, solid and fluid domains are solved in separated regions. For solving the flow field and momentum equations, the lattice Boltzmann equations are employed. In present study in contrast to previous studies, the elastic filament is also modeled by a mass-spring network that provides elastic properties like young’s and bending modulus. The mass of filament is discretized on nodes of spring network. These two solution regions are connected by applying suitable boundary conditions at each time step. Results show that the mass, geometry and location of filament behind the rigid cylinder have significant effect on the filament’s stability and drag reduction. Indicating and analyzing a special point behind the cylinder, where the drag is minimum, is the another purpose of this study.

For aim of indicating better model for use in career counseling with university Student a sample of 640 university students (321 m & 319 fm) from University of Isfahan was selected cluster-randomly, and Occupational Preference Form of Personal Globe Inventory performed between them. Results of randomization test of order relations in each of three groups (men, women, separately; men and women together, supported from better fit for Holland's model than Gati's model (in difference of fit, P=0.01). In each groups, correspondence index (CI) of Holland's model was greater than 0.70 (respectively CI=0.72, 0.75, & 0.72, P=0.02), but CI of Gati's model was respectively 0.50, 0.56, & 0.50, (P>0.05). Results didn't show any difference in model fit between Holland’s and Gati’s model cross sex (P>0.05 for each model). Results supported from cross cultural validity of Holland’s RIASEC model and structural validity of Occupational Preference form of Personal Globe Inventory. Some implications and suggestions were discussed.

Aims: Sports activity is of particular importance in improving the quality of life of the disabled individuals, and the enjoyment of sports activities results in the health of their body and soul as well as the improvement of their social relationships. The aim of this study was to compare the self-regulation components of disabled and veteran athletes and non-athletes.
Instrument and This descriptive study was a causal-comparative research conducted in 2017 among all physical-motorized veterans and disabled athletes and non-athletes in Tabriz. A total of 151 subjects were selected, using purposeful sampling method. They were divided into two groups: athlete (78) and non-athlete (73). The instrument used in this research was Miller and Brown's self-regulation scale. The data were analyzed by SPSS 22, using t-test and multivariate analysis of variance (MANOVA).
Findings: There was a significant difference between the athlete and non-athlete groups in the overall self-regulation and subcomponents such as acceptance, evaluation, launching, review, planning, implementation, and measurement, and in all of the components, the mean of the athlete group was higher compared with the non-athlete group (p=0.001).
The level of self-regulation is higher in the disabled and veteran athletes compared with the disabled and veteran non-athletes.

Functional ankle instability is a common musculoskeletal injury. Patients with impaired proprioception and permanent impairment in postural stability. The aim of this study is to investigate the short-term effect of kinesio tape on joint position sense, proprioception and postural control in patients with functional ankle instability. This quasi-experimental study was performed on 20 non-athlete women aged 18 to 45 years with functional ankle instability. The joint position sense test was performed by Motion Analyzer, sense of force was examined by Load Cell, and balance strength test was done by Force Plate before and after kinesio taping. Kinesio tape was used with a tendon correction technique for the anterior tibialis, peroneus and gastrosoleus muscles.
FINDINGS: The absolute error of the joint position sense (0.98 ± 0.79 degrees), the sense of force (5.43±2.89 n) and postural control (5.73±1.37 ms) decreased to (p<0.001, 2.49±1.49 degrees), (p = 0.004, 10.18±6.09 n) and (p = 0.01, 6.91±1.75 ms), respectively, after using kinesio tape in the affected patients. The results of the study showed that immediately after kinesio taping in patients with functional ankle instability, the absolute error of the joint position sense, the sense of force and postural control decreased and joint proprioception improved.

Background and Purpose:

Cancer is one of the leading causes of mortality worldwide. In recent years, the rate of cancer has been dramatically rising. Side effects and, in some cases, inefficiencies in common treatments have led to extensive research about new drugs, especially those with plant origin. The study of traditional medical knowledge can lead to the selection of effective plants for cancer treatment. Pistacia atlantica is one of the herbs that had been considered by the ancient scientists for different diseases including cancer. This plant has been mentioned in traditional manuscripts with Arabic words like "Botm", "Elk-ol-Botm", and "Habat-ol-Khazra".

Methods and Materials:

In this study, the main traditional manuscripts were searched with Pistacia atlantica related keywords in addition to different words that refer to malignancy like "Saratan" ,"Khanazir", "Saqhirus" and "Jozam". Moreover, scientific databases such as Iran medex, Cochrane, PubMed, SID, Medline, Scopus, and Google Scholar were searched using keywords such as: Pistacia atlantica, Saqez, and Bane.

Based on the results of this study, several anticancer formulations containing the resin of Pistacia atlantica was found in traditional medicine manuscripts. In recent studies, various parts of the plant have been shown to be effective in controlling and inhibiting the proliferation of different types of cancer cells.

So far, various compounds have been identified in Pistacia atlantica, such as phenolic compounds which have antioxidant effects and induce apoptosis in cancer cells. Regarding many indications available in traditional and modern medicine about the anticancer effects of this plant, it can be concluded that Pistacia atlantica has a high potential for further investigations, especially in the form of clinical studies, in order to obtain new anti-cancer drugs.

In this paper, a new spherical quantum dot is proposed to management and enhancement of third order nonlinear optical susceptibility of quadratic electro optic effect. This nanostructure is containing defective shell surrounding with two well. The size of quantum dot, thickness, position and potential of defect have a significant effect on third order optical susceptibility. By numerically solving of Schrödinger equation in the effective mass approximation the third order nonlinear optical susceptibility were calculated. The results are shown that with increasing of dot size the third order nonlinear optical susceptibility is increased. Also, with increasing of defect shell thickness the third order nonlinear optical susceptibility is increased and resonance wavelength is red shifted. The most value of third order optical susceptibility is available when in the symmetric condition of defect position, the defect potential becomes equal to the barrier potential.

Tin-Zinc alloy coatings have many applications because of their unique properties such as corrosion resistance, solderability and flexibility. In this study, the effect of current density, temperature and pH on chemical composition, cathodic current efficiency, morphology and structures of the coatings was investigated. The results illustrated that, at low current densities (

In this investigation, MoSx/Cr coatings were deposited by direct-current magnetron sputter onto Ck45 (AISI 1045) plain carbon steel substrates. The MoSx/Cr ratio in the coatings was controlled by sputtering the composite targets. The chemical characterization was performed using EDX (energy dispersive X-ray analysis); the structural characterization was accomplished by X-ray diffraction (XRD) studies. The mechanical properties of coatings were analyzed by nanoindentation experiments. The tribological behavior of the coatings was investigated using the pin on disc test at room temperature. MoSx/Cr coatings with Cr atomic percentage of 13% was found to possess the optimum wear resistance and durability. The MoSx/Cr coatings showed a maximum hardness of 12.5 GPa at a dopant content of 13 at.% Cr. Moreover, the films exhibited a steady state friction coefficient from 0.15 to 0.19 and the main wear mechanisms of the MoSx/Cr coating in air were abrasive, adhesive, and oxidation.