Aorta

The aorta (/eɪˈɔːrtə/) is the main artery in the human body, originating from the left ventricle of the heart and extending down to the abdomen, where it splits into two smaller arteries (the common iliac arteries). The aorta distributes oxygenated blood to all parts of the body through the systemic circulation.

Structure

Sections

In anatomical sources, the aorta is usually divided into sections.

One way of classifying a part of the aorta is by anatomical compartment, where the thoracic aorta (or thoracic portion of the aorta) runs from the heart to the diaphragm. The aorta then continues downward as the abdominal aorta (or abdominal portion of the aorta) diaphragm to the aortic bifurcation.

Another system divides the aorta with respect to its course and the direction of blood flow. In this system, the aorta starts as the ascending aorta then travels superiorly from the heart and then makes a hairpin turn known as the aortic arch. Following the aortic arch, the aorta then travels inferiorly as the descending aorta. The descending aorta has two parts. The aorta begins to descend in the thoracic cavity, and consequently is known as the thoracic aorta. After the aorta passes through the diaphragm, it is known as the abdominal aorta. The aorta ends by dividing into two major blood vessels, the common iliac arteries and a smaller midline vessel, the median sacral artery.

Yamaha Corporation

Yamaha Corporation (ヤマハ株式会社, Yamaha Kabushiki Gaisha) (/jəˈmɑːhə/ or /ˈjɑːməhə/; Japanese pronunciation: [yamaha]) is a Japanese multinational corporation and conglomerate based in Japan with a very wide range of products and services, predominantly musical instruments, electronics, motorcycles and power sports equipment.

History

Yamaha was established in 1887 as a piano and reed organ manufacturer by Torakusu Yamaha as Nippon Gakki Company, Limited (日本楽器製造株式会社, Nippon Gakki Seizō Kabushiki Kaisha) (literally Japan Musical Instrument Manufacturing Corporation) in Hamamatsu, Shizuoka prefecture and was incorporated on October 12, 1897. The company's origins as a musical instrument manufacturer is still reflected today in the group's logo—a trio of interlocking tuning forks.

After World War II, company president Genichi Kawakami repurposed the remains of the company's war-time production machinery and the company's expertise in metallurgical technologies to the manufacture of motorcycles. The YA-1 (AKA Akatombo, the "Red Dragonfly"), of which 125 were built in the first year of production (1954), was named in honour of the founder. It was a 125cc, single cylinder, two-stroke, street bike patterned after the German DKW RT125 (which the British munitions firm, BSA, had also copied in the post-war era and manufactured as the Bantam and Harley-Davidson as the Hummer. In 1955, the success of the YA-1 resulted in the founding of Yamaha Motor Co., Ltd.

Yamaha V-Max and VMAX

The Yamaha V-Max, called the VMAX since 2008, is a cruiser motorcycle made by Yamaha since 1985, known for its powerful V4 engine, shaft drive, and distinctive styling.

History

The V-Max was designed by Atsushi Ichijo in a team led by Akira Araki with input from Ed Burke and John Reed.

Upon its release in 1985, the V-Max garnered instant critical acclaim and earned the title "Bike of the Year" from Cycle Guide. Sold both in Japan and abroad, the V-Max was sold with only minor modifications from the 1985 model year until the 2007 model year. The V-Max was noted for its quick acceleration, but was also criticized for its poor cornering ability and soft suspension.

Until 2008, the original V-Max was offered for sale through the Star Motorcycles division of Yamaha Motorcycles. Apart from a minor freshening to the bike's specifications in 1993, when the bike gained a larger-diameter fork to minimize high-speed wobbling and drift, four-piston brake calipers, and other handling and safety related upgrades, the 2007 V-Max was almost the same as the original 1985 version.

Roland Sands

Roland Sands (born August 12, 1974) is an American motorcycle racer and designer of custom high performance motorcycles. In his career as a professional motorcycle racer has won the 1998 AMA 250GP National Champion road racer championship. Sands is an award-winning designer of custom performance motorcycles, and owner and founder of Roland Sands Design.

Background

Sands is from Long Beach, California. He began his life with the upbringing and diverse experience in the motorcycle industry. His first motorcycle was a RM 50 dirt bike, given to him on his 5th birthday, on which, after just minutes of riding, he broke a bone, but fell in love with it anyway. He literally grew up in the Performance Machine shop, and started working there at age 14 sweeping floors. Quickly moving up to assembly, sanding polishing, wheel designing, eventually working his way as Director of R&D and Design at Performance Machine. In 2005, after the tremendous success Sands found on Discovery Channel's Biker Build-Off vs. Arlen Ness, Sands founded Roland Sands Design. RSD designs concept motorcycle parts and accessories and builds custom motorcycles. RSD works with major motorcycle manufacturers to design concept and prototype motorcycles and promote benchmark product in the motorcycle industry and beyond. Sands’ designs are described as being a mixture of sport bike and chopper influences to create the ultimate custom bikes.

VMAX

VMAX, Vmax or V_max may refer to:

VMAX

Vmax

V_max (maximum voltage/velocity)