Vitamin K and its essential role in coagulation (vitamin K [Koagulation]) have been well established and accepted the world over. Many countries have a Recommended Daily Intake (RDI) for vitamin K based on early research, and its necessary role in the activation of vitamin K-dependent coagulation proteins is known. In the past few decades, the role of vitamin K-dependent proteins in processes beyond coagulation has been discovered. Various isoforms of vitamin K have been identified, and vitamin K2 specifically has been highlighted for its long half-life and extrahepatic activity, whereas the dietary form vitamin K1 has a shorter half-life. In this review, we highlight the specific activity of vitamin K2 based upon proposed frameworks necessary for a bioactive substance to be recommended for an RDI. Vitamin K2 meets all these criteria and should be considered for a specific dietary recommendation intake.

Many electric car owners are concerned that their batteries may not be durable in very cold weather. Scientists have developed a new and safer electrolyte for lithium-ion batteries, which may solve this problem by withstanding extremely low temperatures.

ALD and CVD are thin film deposition techniques that facilitate the deposition of thin films on substrates. The main difference between the two technologies lies in the way they deposit thin films. The main difference between ALD and CVD is that atomic layer deposition (ALD) deposits a thin film of one atomic layer at a time, while CVD can deposit a wider range of thin films.