نتایج جستجو برای: seeder
تعداد نتایج: 380 فیلتر نتایج به سال:
Abstract This paper reviews and analyzes the impact of residue burning on environment human health, influence ex-situ in-situ management reducing pollution improving soil crop yield, farmers’ economic benefits. Paddy is cultivated 43.8 Mha in India, producing 118.43 Mt grain an estimated 165.8 straw. Burning most common practice for managing rice residues mainly due to its simplicity, low cost,...
Regarding the vibrating seeds box of magnetic cylinder seeder as the research subject and making simulation and analysis for the motion law of seeds which supplied by seed box base on DEM (Discrete Element Method). Researching the mechanism of the seed supply and analyzing the condition of seed supply by the vibration of seed box, when the frequency change from 10Hz to 50Hz and horizontal and v...
The file distribution protocol BitTorrent(BT) is very popular nowadays, and people are used to sharing files with BT clients everyday. In this project, a two factor full factorial design on workloads and BT clients was proposed to test which effect is significant for BT downloading. The first part presents the background knowledge of Peer-to-peer(P2P) and BT and the introduction of several popu...
Pulse-picking from a 100-mW cw mode-locked seeder, a hybrid master-oscillator power-amplifier (MOPA) system, based on Nd:YVO4 and Nd:YAG amplifier modules, has been developed, delivering single-pulses of 8.6 ps at 455-MHz repetition-rate, bunched into ~1-μs trains of 50 mJ ("macro-pulses"). The output beam is linearly polarized and nearly diffraction limited up to the maximum macro-pulse repeti...
Wildfires have been occurring in terrestrial ecosystems since the early evolution of plants (Bowman et al., 2009; Pausas & Keeley, 2009; Bond & Scott, 2010) and have shaped many species and ecosystems worldwide (Keeley et al., 2011). Plant flammability is an important driver of fire in terrestrial ecosystems and thus has a fundamental role in ecosystem dynamics and species evolution (Belcher et...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید