Caution Needed When Performing Smith Machine Squats. Many doctors say that squatting beyond where your calves and thighs form a 90 degree angle is harmful to the knees. Since much of the work is done getting to and from that 90 degree position, it is best to be conservative and not to lower yourself further.
BEAM is a type of chemotherapy used to treat Hodgkin lymphoma | and non-Hodgkin lymphoma | . BEAM is a high-dose chemotherapy treatment. It's given before a stem cell transplant. A stem cell transplant allows you to have much higher doses of chemotherapy. This can improve the chances of curing your cancer. Some people have BEAM chemotherapy in lower doses.
The beam divergence of a laser beam is a measure for how fast the beam expands far from the beam waist, i.e., in the so-called far field.A low beam divergence can be important for applications such as pointing or free-space optical communications.ifferent quantitative definitions are used in the literature: 1  According to the most common definition, the beam divergence is the derivative of the beam radius with respect to the axial position in the far field, i.e., at a distance from the beam waist which is much larger than the Rayleigh length.