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Morgan Parker patented the 2-piece scalpel design in 1915 and Bard-Parker developed a method of cold sterilization that would not dull the blades, as did the heat-based method that was previously used. [10] The handle of medical scalpels come in several basic types. The first is a flat handle used in the #3 and #4 handles.
Any beverages other than the above in sizes 4 oz to 1.5 liters in metal, glass or plastic containers are subject to a 10 cent refund value. Some milk based products such as kefir, drinkable yogurt, milk-based smoothies and milk or plant-based milk with other ingredients that have been previously excluded were enrolled into the Oregon Bottle Bill in January 2020, but the OLCC reversed the ...
According to the Coca-Cola Company's self-published history, "The Chronicle of Coca-Cola," "It was pronounced 'excellent' and placed on sale for five cents a glass" [2] (equivalent to $1.7 in 2023). Although most soda fountain drinks cost seven or eight cents at the time (for a 6.5 oz glass), Coca-Cola chose five cents and specifically marketed ...
The term "sand casting" can also refer to an object produced via the sand casting process. Sand castings are produced in specialized factories called foundries. In 2003, over 60% of all metal castings were produced via sand casting. [1] Molds made of sand are relatively cheap, and sufficiently refractory even for steel foundry use.
Polyethylene was first synthesized by the German chemist Hans von Pechmann, who prepared it by accident in 1898 while investigating diazomethane. [12] [a] [13] [b] When his colleagues Eugen Bamberger and Friedrich Tschirner characterized the white, waxy substance that he had created, they recognized that it contained long −CH 2 − chains and termed it polymethylene.
Cobalt-based blue pigments (cobalt blue) have been used since antiquity for jewelry and paints, and to impart a distinctive blue tint to glass. The color was long thought to be due to the metal bismuth. Miners had long used the name kobold ore (German for goblin ore) for some of the blue pigment-producing minerals.
A KC-135 Stratotanker refuels an F-16 Fighting Falcon using a flying boom. Aerial refueling (), or aerial refuelling (), also referred to as air refueling, in-flight refueling (IFR), air-to-air refueling (AAR), and tanking, is the process of transferring aviation fuel from one aircraft (the tanker) to another (the receiver) while both aircraft are in flight.
The two main application areas for single-use medically approved PVC compounds are flexible containers and tubing: containers used for blood and blood components, for urine collection or for ostomy products and tubing used for blood taking and blood giving sets, catheters, heart-lung bypass sets, hemodialysis sets etc. In Europe the consumption ...