抗体抽提物防治鸡IBD试验

抗体抽提物防治鸡ＩＢＤ试验凌育焱木郭予强詹乐群杨连楷罗映霞余双祥邱深本朱国锋（广东省家禽科学研究所，广州５１０４３０）近１０多年来，鸡ＮＤ和ＩＢＤ免疫失败的现象时有发生，为了更好地防治这些疫病，除了继续研制高效疫苗、完善免疫程序外，高免蛋黄匀浆已成为...     

木层孔菌属——国内新记录种——Phellinus wahlbergii(Fr.) Reid

 本文报道了采自云南省屏边县大围山自然保护区的一种木层孔菌一瓦伯木层孔Phellinus wahlbergii(Fr.) Reid。文中描述了该种为国内新记录种的主要形态特征,并与易混淆的相近种一广布木层孔P.extensus(Lev.) Pat.作了比较。     

流感病毒和禽流感

流感病毒在世界各地广泛分布，其在分类学上归属于正粘病毒科（Orthomyx－oviridato的流感病毒属。根据病毒核蛋白（NP）和基质蛋白（MP）的抗原特性，可将流感病毒区分为A、B、C（又称甲、乙、丙）三种血清型，其中B和C两种血清型主要感染人，而A型流感病毒可引发包括人在内的多种哺乳动物、各种禽类和野鸟的感染和／或疾病。一、A型流感病毒的主要特征A型流感病毒的病毒粒子呈球形，亦可呈丝状，直径约80～120urn，有囊膜，表面有二类长度为12～14urn的数百个纤突，分别是呈棒状的三聚体血凝素（HA）和呈蘑菇状的四聚体神经氨酸酶（…     

Numerical analysis on sparse solid particles’ motion in flow fields of different density

The three dimensional numerical solution for differential equation of motion of sparse solid particles in flow fields is derived. Taking free sedimentation of solid particles as an example, using dimensionless differential equation, the movement rule of solid particles in water and air is numerically analyzed. The contribution of Basset force on solid particles in different density flow fields is paid much attention to. The results show that the Basset force and drag force are in the same magnitude when solid particles move in water; the effect of Basset force can be neglected when solid particles move in the air; and the Basset force should be considered when river water source heat pump and the flow of silt particles are studied.     

Intelligent Control of the Nonlinear Seismic Response of a 3 Story Benchmark Building

Intelligent materials, control devices and intelligent control algorithm research and development in recent years have opened a new world for seismic resistance and disaster reduction in civil engineering. We designed and fabricated a new piezoelectric friction damper. In our research, we regarded the piezoelectric friction damper as the control device. We proposed a fuzzy control algorithm for reducing nonlinear seismic response of a 3 story benchmark building and established the interactive relationships between structural responses and fuzzifier factors, defuzzifier factor. A numerical simulation is carried out to analyze the nonlinear seismic responses of the controlled 3 story benchmark building. The simulation results are compared to those of other control strategies. The results show that the fuzzy control can reduce the nonlinear seismic response of 3 story benchmark building and minimize the structural damage caused by strong earthquakes.     

甘保罗病与新城疫免疫母鸡血清抗体和蛋黄抗体的消长规律及其相互关系

甘保罗病与新城疫免疫母鸡血清抗体和蛋黄抗体的消长规律及其相互关系凌育郭予强李健东杨连楷罗映霞詹乐群余双祥邱深本朱国锋（广东省家禽科学研究所广州市石井５１０４３０自８０年代后期以来，蛋黄抗体日益引起人们的关注，不但用之进行疾病的监测、诊断和免疫学等方面...     

来航鸡间皮瘤

来航鸡间皮瘤凌育，全健，郭予强，杨连楷（广东省家禽科学研究所，广州５１０４３０）１９９３年，我所禽病室的实验来航蛋鸡群中，有１只２年半龄的母鸡自然死亡，生前除见精林较差、食欲不振和形体消瘦外，无其它明显的临诊异常。经死后剖检、细菌学及病理组织学检查，...