Compared to titanium. tungsten has a higher tensile strength and hardness.

Center pull yarn is yarn that you can pull from the center of the skein, allowing for easier use without the skein rolling around. To find the end of a center pull yarn, insert your fingers into either end of the skein. Feel around for a loose end that's tucked inside. It might take a few tries to differentiate between the center end and the outer end, as yarn companies often tuck both ends in close proximity. Once you find the loose end in the center, gently pull it out. If you encounter resistance or tangles, gently work the yarn free to avoid knots. Avoid pulling too hard, as this can tighten the yarn around itself inside the skein. Some crafters prefer winding their yarn into a ball to maintain control over tension and prevent tangles, but finding the center pull end in a pre-wound skein or cake is generally less hassle and keeps your yarn organized and clean.

Amino acids are organic compounds and building blocks of proteins. Twenty standard amino acids find their involvement in human biology, but the question seems to seek any three specific examples. Thus, the task should consider alanine, cysteine, and glutamine. Alanine (Ala) is a non-polar aliphatic amino acid that is usually found in the alpha-helices and beta-sheets of protein structures owing to its small size and flexibility. Cysteine (Cys) is unlike the others because of the presence of a sulfur atom, which can establish disulfide bonds with one another, assisting in the structural stability of the protein. Glutamine (Gln) is a polar, uncharged amino acid that contains amide, and is important in metabolism, especially maintaining nitrogen balance in the body and being a substrate for rapidly dividing cells such as immune cells. Each of these amino acids serves myriad functions during various biological processes, thus illustrating the spectrum and importance that amino acids represent in life.