to evaluate the effects of on-farm seed priming treatments and sowing dates on rate and percentage of seedling emergence, biological yield and some physiological indices of corn hybrid (sc. 260) an experiment was conducted in hamedan, iran in 2010. a split plot in a randomized complete block design with three replications was conducted. main plots include three sowing dates (early, on-time and ...

Tissue engineering has been developed as a new approach in regenerating tissues and organs using cells and scaffolds. An important element in successful tissue engineering in vitro is a suitable bioreactor system (Freed and Vunjak-Novakovic 1997). In general, some types of bioreactors have been used for cell culture on polymer scaffolds, namely spinner flasks, rotating vessels, and perfusion sy...

In order to meet the requirements of rice field precision direct seeding in rows and hills, a spiral grooved seed metering device for hills is designed. The Matlab software used study movement trajectory buds groove during process. Based on quadratic regression-orthogonal rotation combination design, taking working speed wheel, length helix angle as test factors, well qualified rate hill diamet...

It is very important to understand the onset and growth pattern of breast primary tumours as well as their metastatic dissemination. In most cases, it is the metastatic disease that ultimately kills the patient. There is increasing evidence that cancer stem cells are closely linked to the progression of the metastatic tumour. Here, we investigate stem cell seeding to an avascular tumour site us...

Corn (Zea mays L.) yields have increased in the United States since 1930s and other parts of world 1950s 1960s because improvements agricultural management genotypes. Despite these increases, production concerns still exist. In July 2016, abnormal ear development (multi-ears per node, barbell-ears, short-husks) was reported cornfields that extended from Texas Panhandle to eastern Colorado east ...