汉译文本的审美效果

本文讨论汉译文本审美的可能性和必要性,强调美学对翻译实践的指导作用,力求译本在忠实于原作的前提下,最大限度地体现音美、意美、形美的整体效果.     

Behavioral and neuronal mechanisms of cricket phonotaxis

Summary The auditory communication of crickets provides a model system for the analysis of the neuronal mechanisms underlying complex behavior. The song of male crickets attracts females. The necessary and sufficient parameter of the song for the female phonotaxis has been determined by a quantified behavioral analysis. Neuronal correlates of this pattern recognition exist in the cricket brain and give rise to a hypothesis on the mechanism of song pattern recognition. Causal relationships between the orientation of a cricket during phonotaxis and the activity of single identified neurons were found by monitoring and deactivating single neurons during behavior. The different roles of various identifield neurons for sound localization have been tested by this method. The plasticity of the auditory system at both the behavioral and at the neuronal level has been studied after ampytation of one ear, and a mechanism for sound localization with only one ear is proposed.     

Vasoactive intestinal polypeptide stimulates prolactin release in vivo in the ring dove (Streptopelia risoria)

Summary I.v. administration of vasoactive intestinal polypeptide (VIP) to ring doves significantly elevated the plasma concentration of prolactin after 10 min in a dose-related manner. The plasma prolactin concentration of nonbreeding doves with low basal levels was increased by a similar amount as in brooding doves whose initially high concentration of plasma prolactin had been reduced by nest deprivation prior to treatment.     

Cytosolic factors in mitochondrial protein import

In vitro import studies have confirmed the participation of cytosolic protein factors in the import of various precursor proteins into mitochondria. The requirement for extramitochondrial adenosine triphosphate for the import of a group of precursor proteins seems to be correlated with the chaperone activity of the cytosolic protein factors. One of the cytosolic protein factors is hsp70, which generally recognizes and binds unfolded proteins in the cytoplasm. Hsp70 keeps the newly synthesized mitochondrial precursor proteins in import-competent unfolded conformations. Another cytosolic protein factor that has been characterized is mitochondrial import stimulation factor (MSF), which seems to be specific to mitochondrial precursor proteins. MSF recognizes the mitochondrial precursor proteins, forms a complex with them and targets them to the receptors on the outer surface of mitochondria.     

声波多普勒效应的相对性

讨论了物理学教学中有关声波多普勒效应的相对性问题，按照相对运动的原理，对于不同参照系的声波多普勒效应，其产生过程的解释也不相同。与光波的多普勒效应作了初步比较。     

Influence of host plant and larval diet on ovarian productivity inAcrolepiopsis assectella Z. (Lepidoptera: Acrolepiidae)

Summary Females ofAcrolepiopsis assectella, reared on a semi-synthetic diet and laying on artificial substrates, do not respond to external stimuli by increasing ovarian production. When returned to the natural host (Allium porrum) for only one generation, ovarian production again rises and reaches the same level as in wild females, but its variability is strongly reduced. We conclude that selection under artificial conditions eliminates individuals which strictly depend on host plants for stimulation of larval nutrition and of reproduction.     

试析英语A的拼读规则

英语单词有重读音节和非重读音节之分。本文对A在重读音节中的读音概括了5条拼读规则，对规则的例外概括了3条语音演变规律，从历时语言学的角度解释了这些规则的来历以及为什么会有例外。A在非重读音节中的读音又分为2种情况：模糊音和非模糊音。作者认为这是英语拼读规则的核心内容，掌握了这些就基本上掌握了英语的其他拼读规则，对学习英语有极大好处。     

汉字形、声、义关系特征及其对汉语语法特征的影响

汉字是音、形、义三者一体的表意系统的文字。汉字音、形结合表义的特征可用公式“(L∧F)→Y”来表示。汉字(L∧F)→Y的特征对语法的影响很大。从微观上看,构字法中的形声义关联对语法的影响尤其是对确定词类的影响是显而易见的;从宏观上看,汉语从字结构到词结构再到句子结构的认知过程中,采取了Q空间来形成语言结构的等级格式及其间的关系,并形成汉语语句的中国套箱式的分形语法体系。     

神经纤维对磁刺激的动态响应

给出一种激活函数快速计算方法和公式 ,推导出磁刺激作用下神经纤维的 Hodgkin- Hux-ley模型 ,并建立了神经兴奋与磁刺激仪电路参数之间的联系 .研究了磁刺激作用下神经纤维的阈下、阈上和重复磁刺激响应 .结果表明 ,在不同电容初始充电电压下 ,响应具有阈值性 ;阈下响应在空间和时间上都与激活函数呈现一定的线性 ,两者相差 1 80°;不同强度下的阈上行为有相同的空间分布和时间历程 ,只是响应潜伏期有差异 .1 0 0 Hz以下的重复磁刺激是单脉冲的线性组合 ,没有累积效应 .     

QDC自动应答录音电话的研究

本文对所研究的QDC自动应答录音电话的原理、结构及性能进行了简要介绍,另外还对所采用的语言处理器作了扼要说明.