Water-soluble polysaccharide was isolated from Semen cassiae using water for extraction and ethanol for deposition. The optimized conditions for polysaccharide isolation by orthogonal experiments were a sample to liquid ratio of 1:30 at 80C for 3.5 hours; the yield of polysaccharide from Semen cassiae under these conditions was 5.46%. Different polysaccharides (SCPW-1, SCPW-2, SCPW-3, SCPW-4, …
Background and Aims Aluminium (Al) toxicity is one of the factors limiting crop production on acid soils. However, genotypic differences exist among plant species or cultivars in response to Al toxicity. This study aims to investigate genotypic differences among eight cultivars of tatary buckwheat (Fagopyrum tataricum) for Al resistance and explore the possible mechanisms of Al resistance. Me…
This paper is concerned with a fault-detection and control problem for discrete-time switched systems, which are modeled using different operating points for the flight envelope. The fault detector and controller designed simultaneously have asynchronous switching with the original switched system. For the fault-detection objectives, estimation errors between residual signals and faults are min…
The ground-state properties of even–even nuclei from Z = 10 to Z = 20 are systematically studied in covariant density functional theory with the point-coupling interaction PC-PK1. The triaxiality effect on nuclear binding energy, including the mean-field part and rotational correction energy, is examined.We find that 38Si, 46S, and 48S exhibit considerable triaxial deformation. The result…
Abstract 1 The rice leaffolder Cnaphalocrocis medinalis (Guen´ee) (Lepidoptera: Pyralidae) is a serious rice pest in Asia. The conspicuous foliar damage caused by C. medinalis larvae leads to early-season insecticide applications that disrupt the biological control of this and other pest species. 2 Despite the often dramatic impact of C. medinalis, rice plants can tolerate severe defoliatio…
Abstract. Mesoporous titanosilicates with high titanium content were synthesized under mild acidic conditions (pH = 4.4, HAc–NaAc buffer solution) by co-condensation of acetylacetone-modified titanium isopropoxide (Ti(OBun)3 (acac)) and mixture of sodium silicate with tetramethoxysilane (TMOS) or tetraethoxysilane (TEOS) or tetrakis(2-hydroxyethyl)orthosilicate (EGMS), using block copolym…
Abstract. In order to seek the method to improve the hemo-compatibility of artificial mechanical heart valve, the surface of rabbit’s heart valve was observed using the scanning electron microscopy (SEM). The results showed that the dual-scale structure which consists of cobblestones-like structure of 8 umin underside diameter and 3 um in height, and the fine cilia of about 150 nm in diam…
Abstract. Dehydrogenation of ethane to ethylene in the presence of carbon dioxide was investigated over various gallium-based catalysts. Ga2O3/HZSM-5 catalysts show better stability than b-Ga2O3, and the higher Si/ Al ratio HZSM-5 supported gallium oxide catalysts are more resistant to deactivation. The Ga2O3/HZSM- 5(97) catalyst exhibits both high activity and stability for dehydrogenation…
Abstract Melamine-type dendrimers are grafted to mesocellular siliceous foam (MCF) with ultralarge mesopores by stepwise alternating treatments of the substrate with 2,4,6-trichlorotriazine and ethylenediamine. MCF grafted dendrimers up to 4th generation are prepared and characterized. Very high organic loadings (55 wt% at the 4th generation) are achieved, with half of the initial substrate …
Approximately 35–55% of total nitrogen (N) in maize plants is taken up by the root at the reproductive stage. Little is known about how the root of an adult plant responds to heterogeneous nutrient supply. In this study, root morphological and physiological adaptations to nitrate-rich and nitrate-poor patches and corresponding gene expression of ZmNrt2.1 and ZmNrt2.2 of maize seedlings a…