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关键词： PERIODICALS  

摘要： An introduction is presented in which the editor discusses the journal becoming an electronic periodical and retirement of technical editor Jan Bertelsen.

关键词： Bio-inspired design   morphological analysis   self-contained quadruped robot  

摘要： This paper presents a bio-inspired mechanism design for a quadruped walking robot. The approach is derived from the observation on the behaviors of quadruped locomotion, skeletal structure, and the study on the stability of walking based on morphological analysis. In the first, we define the design parameters such as the dimensions of the body and limbs, the center of mass position, and locomotion mechanisms based on surveys on the literatures from biologists. Then, by using the parameters, we propose an useful framework for determining the design parameters of a quadruped walking robot. For implementations, we manufacture a dog-type self-contained quadruped walking robot, named AiDIN-III (Artificial DIgitigrade for Natural Environment version III) and the effectiveness of the proposed idea is validated via experimental works.

ISBN: (纸本)9787040366617

关键词： 癌,鳞状细胞   模型,动物   金黄地鼠   颊黏膜  

摘要： 目的建立金黄地鼠颊黏膜鳞癌动物模型,观察其生物学特性。方法 40只采用0.05%4-硝基喹啉-1-氧化物(4NQO)涂抹颊黏膜,10只采用自来水涂抹颊黏膜。苏木精-伊红(HE)、转录因子蛋白(Foxm1)免疫组织化学观察第8、12周组织标本。有限稀释法体外传代培养颊黏膜组织标本,观察平板克隆形成率,检测单克隆细胞内细胞角蛋白(CK)和波形蛋白(Vim)表达,染色体分析确定细胞核型。结果第12周时26(84.6%)只颊黏膜病理为原位癌,HE染色、Foxm1免疫组织化学结果表明,符合鳞癌细胞基本特征,CK和Vim免疫组织化学阳性率约为96.0%,染色体为四倍体核型。结论 4NQO涂抹诱发金黄地鼠颊黏膜癌变,建立金黄地鼠颊黏膜鳞癌动物模型。

关键词： 合生元   生物学功能   动物生产   应用  

摘要： 合生元是由益生菌和益生元结合使用的生物学制剂,能够同时发挥两者的功效,具有维持肠道菌群平衡、增强动物机体免疫力等功能,并且无毒副作用和药物残留,已成为抗生素的理想替代品。文章从合生元的组成、合生元的生物学功能及合生元在动物生产中的应用进行综述。

关键词： Situational interest   Sources of interest   Biology education   Field trip   Zoo education  

摘要： This paper comprises a presentation of the findings of a case study that investigated how situational factors triggered 12th grade students' interest during a field trip to a zoo. The purpose was to identify sources of interest and to investigate the attributes that make them interesting. Students' interest was investigated by a descriptive interpretive approach, based on data from classroom and field trip observations, video recording, and interviews. The findings provided evidence that substantial situational interest can be generated during a fieldtrip to a zoo. Students' interest was triggered by variables such as active involvement (hands-on activities), novelty, surprise, and knowledge acquisition (activities and provided information), and social involvement (opportunities for socialisation). The results show that strong interest is stimulated when several variables are in play simultaneously. The study implies that zoo visits can provide students with affective experiences, which can be a powerful way to stimulate students' learning motivation.

关键词： R. trochantericus   biological parameters   functional response   barcode   cashew  

摘要： Reduviid species are recorded as indigenous natural enemies of tea mosquito bug (Helopeltis spp.), which is one of the major economically important pests of cashew. Rihirbus trochantericus laid eggs singly as well as in groups of up to 26 eggs in 3 to 7 clusters per female. The incubation period was 13.00 +/- 0.69 days. The stadial durations of I, II, III, IV and V nymphs were 12.39 +/- 1.13, 7.00 +/- 0.39, 7.56 +/- 0.35, 9.28 +/- 0.64 and 12.78 +/- 1.27 days, respectively. Adult males and females survived for 107.13 +/- 2.70 and 117.9 +/- 3.83 days, respectively and their sex ratio was 1: 0.7. The sequential acts of predation as well as mating conform to those of Harpactorine reduviids. R. trochantericus exhibited Holling's type II functional response. The molecular characterization of R. trochantericus will be highly useful in confirming the identity of the species in any of its life stages.

关键词： Animals   Anthozoa/physiology   Stress, Physiological   Sulfonium Compounds/metabolism   Temperature  

摘要： Photosynthetic algal symbionts of corals produce sulphur substances that are involved in the regulation of ocean temperatures. In a twist to the tale, it emerges that coral animals produce the same compounds. See Letter p.677

关键词： 饲料养分   生物学效价   体外透析法   单胃动物仿生消化系统  

摘要： 体外法能快速准确地进行饲料生物学效价评定,其中体外透析法具有将酶促反应和产物分离合二为一、消除产物抑制、类似于动物消化道吸收等特点。文章对国内外利用体外透析法评定单胃动物饲料养分生物学效价方面的研究进展与存在的问题进行讨论,侧重分析了蛋白质、氨基酸、淀粉、矿物元素等饲料养分的生物学效价体外评定发展现状与不足以及主要影响因素,并简要概述单胃动物仿生消化系统进行饲料评定的优势,旨在为建立我国便捷评定畜禽饲料养分生物学效价的方法提供参考。

关键词： 动物学   实验教学   解剖技能  

摘要： 动物解剖实验在动物学实验教学中占有重要地位,学生的解剖技能是做好动物解剖实验的基础,也是学生以后从事科学研究和教学的基本素质。结合动物学实验教学实践阐述了动物解剖的基本原则及培养学生解剖技能的方法,以便学生系统理解动物解剖的基本原则和方法。