Halva popularly made from sunflower seeds or peanuts. In Republic of Macedonia, ALVA (, "alva") refers to a sweet which comes in a few varieties. Alva made from tahini (sesame or sunflower) (Таан алва) is most used in Macedonia. Most popular is the alva from Negotino and Super Alva from Skopje. Alva from semolina (алва од гриз) is made only at home. Izmirska halva (Измирска алва) brought back from Izmir Turkey, of which large areas are populated by Macedonians, is a chocolate type of alva made from flour, cocoa, sugar and peanuts. This alva is also made at home. Alva is
Solder paste a move to lead-free solder. Solder paste is thixotropic, meaning that its viscosity changes over time with applied shear force (e.g., stirring). The "thixotropic index" is a measure of the viscosity of the solder paste at rest, compared to "worked" paste. Depending upon the formulation of the paste, it may be very important to stir the paste before it is used, to ensure that the viscosity is appropriate for proper application. The size and shape of the metal particles in the solder paste determines how well the paste will "print". A solder ball is spherical in shape; this helps in