Despite progress in understanding chromatin function, the structure of the 30 nm chromatin fiber has remained elusive. However, with the recent crystal structure of a short tetranucleosomal array, the 30 nm fiber is beginning to come into view.

rhizotoxicity by reducing Al activity through increased solution ionic strength and increased competition beAluminum-tolerant germplasm is needed to overcome subsurface tween Ca and Al at binding sites external to the plasacidity constraints to root growth and plant access to water and nutrients. Root elongation of four soybean [Glycine max (L.) Merr.] genomalema (Kinraide and Parker, 1987). Ot...

In this study, a 2mx2mx0.5m box is modeled, filled with soil having thickness of 40 cm rice fields and sheet pipe subsurface drainage installed 30 below the surface. The connected to air duct reservoir upstream outlet downstream. Automation water level control in done utilizing digital controller which has been programmed sensor solenoid valve. If detected falls minimum threshold, will open val...

The life test of the 30 cm diameter ion thruster developed by Lanzhou institute physics began in Apr. 2018 and ended Jan. 2020, lasting 6,500 h. This paper introduces results 6,500-h completed on ground, including ground facility for test, variations thrusters working performance, times breakdown power restart, erosion key components. show that performance parameters, such as thrust, specific i...

Impacts of land use on soil organic C (SOC) are of interest relative to SOC sequestration and soil sustainability. The role of aggregate stability in SOC storage under contrasting land uses has been of particular interest relative to conventional tillage (CT) and no-till (NT) agriculture. This study compares soil structure and SOC fractions at the 30-yr-old Horseshoe Bend Agroecosystem Experime...

This study investigated the dependence of Pu3+ and Pu4+ vertical distribution on the soil characteristics in soddy and forest soil. Soil samples were analysed for organic matter and pH. Special columns with contaminated (239Pu) soil surface were kept for 326 days under field conditions. The analysis of the contaminated soil layers (5 cm each, totalling 20 cm) showed that 81% of 239Pu4+, 44% of ...