Damage Identification for Guyed Mast Based on WVD Cross term Statistic Distinction

The relative alteration of Wigner Ville Distribution cross term statistic was proposed for damage detection of guyed masts. And numerical analysis and experimental study were carried out with the case of the aero navigating guyed mast in Fuling District. It was found that not only the shaft’s damage of different location and degree, but also the local damage of different type could be identified with the relative alteration of WCS accurately. The accuracy and sensitivity of the identification can be improved by increasing the guy’s initial pre tensions. The damage identification test can quantify the damage extent of simulation. And it was indicated that the WCS index can identify the local damage of guyed mast and the results of damage identification were in good agreement with those of numerical analysis.     

一例疑似鸡食盐中毒的分析研究

为了确诊一例疑似鸡的食盐中毒病例,本文以新郑某鸡场疑似食盐中毒的4000只肉鸡为研究对象。通过测定病死鸡只胃、肠内容物及肝脏中的氯化钠含量,结合临床症状、病理变化、脏器常规石蜡切片观察,结果均与鸡的食盐中毒相符。以上结果表明,该群鸡死于食盐中毒。     

江苏省通州市粮食生产现状及发展对策

介绍了江苏省通州市粮食生产和需求情况,分析了影响粮食生产的主要问题,提出发展粮食生产的对策。     

Using a wheat-rye amphihaploid population to map a rye gene responsible for dwarfness

Gene identification in cross-pollinating plants such as rye can be arduous and time consuming because of the difficulties involved with genetic population construction. Here, we provide an alternative approach for the construction of mapping populations to rapidly map genes in cross-pollinated cereal rye. The aim of the present experiments was to genetically analyze the dwarf stature expressed by a germplasm accession of rye. The dwarf phenotype was reversible when the seedlings were exposed to gibberellic acid; the reductions in plant height occurred via reductions in cell size. A mapping population was constructed by generating a set of wheat-rye amphihaploids bred from a single rye plant heterozygous for the dwarfing gene(s). The dwarfness phenotype was expressed in the amphihaploid background, and segregation in the mapping population was consistent with the presence of a single gene. Using rye SSR markers, the gene responsible was located on chromosome arm 1RL, which is also the location of the known rye dwarfing gene Ddw3. This gene is valuable for dwarf breeding of wheat as well as rye.     

Will spent mushroom substrate application affect the dissipation and plant uptake of phthalate esters?

Journal of Soils and Sediments - The objective of this study was to investigate whether spent mushroom substrate (SMS) amendment was an appropriate way to reduce di(2-ehylhexyl) phthalate (DEHP)...     

Triplex real-time PCR detection of three quarantine Phytophthora pathogens infecting Malus Miller

Journal of Plant Diseases and Protection - In order to develop a simultaneous and specific molecular detection of the three quarantine Phytophthora pathogens, Phytophthora hibernalis, Phytophthora...