there are a little information about nutritive value of alfalfa harvested at different cuts and different cutting time (morning and afternoon) in semiarid climate condition of north east of iran. effects of different harvesting cuts and cutting time (6 a.m and 6 p.m) of alfalfa hay at early bud stage on chemical composition and in vitro gas production fermentation profiles were studied in this ...

Cutting or welding heavy metal requires higher laser output power than virtually any other type of materials processing application. In the oil industry, an important heavy metal cutting application is creating the slotted liners used to separate oil from well sediments such as sand and gravel. Traditionally, this was done with diffusion-cooled CO2 slab lasers, but now, kilowatt-class fiber las...

Wild chrysanthemum has a high medicinal value. Its mechanized harvest can improve harvesting efficiency, reduce labor costs and planting benefits, which is an important way to promote artificial planting. However, one of the difficulties in large diameter hardness stem, leading cutting resistance power consumption. In order consumption, bionic blade designed this paper by employing bionics prin...

Jatropha curcas stem was analyzed for chemical compositions: 19.11% pentosan, 42.99% alphacellulose and 24.11% lignin based on dry weight of 100-g raw material. The condition to fractionate cellulose, hemicellulose and lignin in J. curcas stem using steam explosion was optimized. The procedure started from cutting J. curcas stem into small pieces and soaked in water for overnight. After that, t...