Mobile balers, machines which gather and bale hay in one process, were first developed around 1940. The first balers produced rectangular bales small enough for a person to lift, usually between 70 and 100 pounds (32 and 45 kg) each. The size and shape made it possible for people to pick bales up, stack them on a vehicle for transport to a storage area, then build a haystack by hand.
From Wikipedia, the free encyclopedia. An F1 hybrid (or filial 1 hybrid) is the first filial generation of offspring of distinctly different parental types. F1 hybrids are used in genetics, and in selective breeding, where it may appear as F1 crossbreed. The term is sometimes written with a subscript, as F1 hybrid. The offspring of distinctly different parental types produce a new, uniform phenotype with a combination of characteristics from the parents.
Filial piety, or xiao is a concept originating with Confucianism that outlines the way in which family members should interact with each other. It is based on a hierarchical relationship, in which parents and older family rank more highly than children and younger family members, and men rank more highly than women.he concept of filial piety is closely related to other Confucian concepts, including ren and yi. For instance, if a child is lacking in ren, then his elders have a responsibility in terms of xiao to help him develop it. These concepts can even trump other obligations, in some cases.