Jan 31
Resting Rust | Lime Kiln Baxa
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Resting Rust | Lime Kiln Baxa
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Big Guns
A Ukrainian 2S7 Pion self-propelled canon firing on Russian positions.
G6 Howitzer
I thought this was about OTHER catheters.
A self-propelled catheter with earthworm-like peristaltic motion
Biopsies of pulmonary lesions are essential for increasing the accuracy of diagnosis and treatment for respiratory illnesses such as lung cancer. Currently, manual biopsies are performed via bronchoscopy. However, the bronchi tends to branch thinner and more complicatedly as it goes to the periphery, which makes it a challenge to reliably choose one and fine-tune the propelling movement. Given the skill disparities in operating doctors as well, it is difficult to reliably reach the lesion with the biopsy forceps, resulting in inadequate diagnosis accuracy.
The development of instruments and mechanisms that can reliably reach the target in the lungs is required for adequately testing with an endoscope, but the looming challenge was finding a mechanism to reliably advance the biopsy forceps to the target even inside the ultrafine and widely branching bronchi.
Now, Prof. Yuichiro Takai of Department of Respiratory Medicine, Omori Medical Center at Toho University and Prof. Hideyuki Tsukagoshi, of Department of System and Control Engineering at Tokyo Tech collaborate in developing the new self-propelled catheter designed to generate travelling waves in multiple chambers just by adding and reducing pressure inside one tube. This allowed for moving forward with peristaltic motion within an ultrafine structure such as a bronchus. This catheter also has an actively curving function for choosing the direction of propulsion, and a flexing drive function for adjusting to changes in line diameter. Their effectiveness was verified using a bronchus model.
Delivery experiment within bronchus model and a self-propelled catheter prototype.Credit: Hideyuki Tsukagoshi
self-propelled economic mechanism
financial internal collateral
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The article titled "M42 Duster — From Fighting Jets to Battling Guerrillas" on The Armory Life website, authored by Friedrich Seiltgen, provides a detailed history of the M42 Duster, a light armored air defense system initially built for the U.S. Army between 1952 and 1960. Known for its effectiveness against ground forces during the Vietnam War, the M42 saw its first use in the Korean War and continued service through the 1980s. Initially developed from the M41 Walker Bulldog light tank, the Duster was equipped with a 500 horsepower engine, achieving speeds up to 45 mph. The article highlights the M42's role in Vietnam, where it excelled in providing security and convoy support, even earning the nickname "Fire Dragons" from the enemy. Despite its prowess, the Duster faced limitations due to its gasoline engine and issues with ammunition sensitivity. A total of 3,700 units were built, and by 1971, the U.S. Army began phasing out the Duster, transitioning its use to the National Guard, with the final units retiring in 1988. The article provides a comprehensive overview of the M42's specifications, deployment, and impact within military history.
Name: gravitational rolling ball Color: pink blue Material: ABS, Silicone Specifications: 43mm in diameter, 40g in weight, Product packaging
Keep your cat entertained for hours with our automatic rolling ball! This fun and interactive toy features a built-in sensor that detects your cat's movement and automatically rolls the ball, encouraging your cat to play and stay active. Perfect for solo playtime or for bonding with your furry friend, our automatic rolling ball is the perfect addition to your cat's toy collection. Get yours today and give your cat the gift of endless fun!