Cloudy Spine Meta-System Proposed Model in Small Businesses Process Management

Cloudy computing by offering the scalable infrastructure and available capabilities as a service for small and medium-sized businesses has changed the game. It is a paradigm that computing resources are available anywhere and anytime and businesses can take advantage of it in the same way as they consume utilities like water and electricity. Due to the important role of small and medium-sized businesses in Iran economy, the aim of this study is to design a cloudy Spine for small businesses. According to the views of experts in the field of IT and cloudy computing, information and data in this field are collected by observing, preliminary and systematically interviews. Studies show that this business model provides a win-win solutions for small and medium-sized businesses provider and cloud service consumer. At the end, it is presented for the cloudy Spine model

Comparison of Stellite coatings on low carbon steel produced by CGS and HVOF spraying

Stellite alloys are of great interest in industries due to a unique combination of high temperature mechanical strength, outstanding wear and corrosion resistance. Different thermal spraying processes are used for deposition of stellite alloys on industrial components. However, the investigations on the structure-property relationship of these alloys produced via different deposition process are limited. This study focuses on the microstructure, oxidation, and tribo-mechanical properties of Stellite 21 deposited by cold gas spraying (CGS) and high velocity oxy-fuel (HVOF) process on a low carbon steel substrate. The coating cross- section was characterized by SEM and optical microscopy. The coatings were further characterised by using nanoindentation, adhesion, and ball-on-disk wear tests. Moreover, XRD tests were run on the powder and the coatings to reveal possible phase transformation during spraying, as well as during wear and oxidation tests. The results showed no phase transformation in the as-sprayed CGS coating, besides higher values of porosity and oxide phase in the HVOF coating. However, an fcc-to-hcp phase transformation occurs at the surface layer of both types of coating during the ball-on-disk wear test. The presence of continuous oxide networks in HVOF coatings leads to delamination during the wear test. Overall, the CGS Stellite 21 coatings exhibit better performance than HVOF coatings in wear and oxidation tests

) Variation of the latissimus dorsi muscle: a case report

ABSTRACT The latissimus dorsi muscle is used as a muscular flap in head and neck reconstructive surgery. During a routine dissection in our department, we encountered an additional muscular band in the latissimus dorsi on the left side of a male cadaver. This rare muscular variation originated from the latissimus dorsi and inserted into the coracoids process. With regard to important knowledge of such a variation for safe and successful clinical practice, we present a variation of the latissimus dorsi muscle

Effect of cold spray processing parameters on the microstructure, wear, and corrosion behavior of Cu and Cu–Al2O3 coatings deposited on AZ31 alloy substrate

Cold spray coatings represent a newly emerging and recently implemented approach to enhance the poor wear and corrosion resistance of AZ31 magnesium alloy. In this study, the authors applied pure Cu and Cu-50 wt% Al2O3 composite coatings on an AZ31B substrate using the cold spray deposition method and investigated the effects of gas pressure (1, 2, and 3 MPa) and stand-off distance (1, 2, and 3 cm) on their microstructure characteristics. An increase in gas pressure from 1 MPa to 3 MPa resulted in a decrease in porosity, ranging from 33 % to 38 %, across varying stand-off distances. Increasing the stand-off distance from 1 to 3 cm resulted in a nearly four-fold rise in porosity for 2 and 3 MPa pressures and about 1.5 times for 1 MPa. The porosity increased with higher pressure due to the fragmentation of Al2O3 particles but decreased with greater spraying distance due to reduced Al2O3 retention. Additionally, the incorporation of Al2O3 particles into Cu coatings led to a significant improvement in sliding wear resistance, by up to 50 %, compared to the bare substrate. Abrasive wear and delamination were identified as the dominant wear mechanisms for the composite coatings based on friction coefficient values and micromorphology of wear tracks. Electrochemical results indicated a significant increase in the corrosion resistance of the Cu coating compared to both the bare Mg substrate and Cu–Al2O3 coating, attributed to improved resistance to galvanic corrosion

Variation of the latissimus dorsi muscle: a case report

The latissimus dorsi muscle is used as a muscular flap in head and neck reconstructive surgery. During a routine dissection in our department, we encountered an additional muscular band in the latissimus dorsi on the left side of a male cadaver. This rare muscular variation originated from the latissimus dorsi and inserted into the coracoids process. With regard to important knowledge of such a variation for safe and successful clinical practice, we present a variation of the latissimus dorsi muscle