Maize grain yield varies highly with water availability as well as with fertilization and relevant agricultural management practices. With a 311-A optimized saturation design, field experiments were conducted between 2006 and 2009 to examine the yield response of spring maize (Zhengdan 958, Zea mays L) to irrigation (I), nitrogen fertilization (total nitrogen, urea-46% nitrogen,) and phosphorus...

Experimental structure functions for (Na2O)0.35[(P2O5)1−x(B2O3)x ]0.65 glasses, where x = 0.0, 0.2, 0.4, 0.6, 0.8 and 1.0, have been measured by high-energy x-ray diffraction up to wavevectors of 28 Å −1 to obtain atomic pair distribution functions with high real space resolution. The experimental diffraction data have been used to guide constrained reverse Monte Carlo simulations of the three-...

Las praderas del altiplano Perú son base de la alimentación ganado, el trébol carretilla es una leguminosa naturalizada, crece entre cultivos agrícolas, produce excelente forraje y aporta nitrógeno; sin embargo, no valorada, más aún arrancada por ser considerada maleza. Se realizó un estudio a 3842 m s.n.m. para evaluar influencia fertilización fosforada sobre duración ciclo vida, rendimiento f...

This paper investigated the effect of Pr₆O11 addition on the acid resistance of ceramic proppant. Acid resistance of proppants can be improved by introducing Pr₆O11 into the Al₂O₃-CaO-MgO-SiO₂ (ACMS) system. To illustrate and explain the mechanism of acid resistance, the samples were characterized by different techniques, using X-ray powder diffraction (XRD) and scanning electron microscopy (SE...

A novel bioactive glass scaffold ICIE16/BSG has been prepared from a mixture of two different melt-derived glasses: a silicate bioglass (ICIE16) and a borosilicate bioglass (BSG). Combined processing techniques (gel casting and foam replication) were used to form three-dimensional, interconnected porous monolith scaffolds (Orgaz et al., 2016) [1]. They were then nitrided with a hot ammonia flow...