关键词： HISTAMINE H3 RECEPTORS   GASTRIC ACID SECRETION   CONSCIOUS GASTRIC FISTULA CAT   (R)ALPHA-METHYLHISTAMINE   THIOPERAMIDE  

摘要： In an attempt to assess the role of histamine H-3 receptors in the control of gastric acid secretion, the effects of the selective histamine H-3 receptor agonist, (R)-alpha-methylhistamine and antagonist, thioperamide were evaluated in the conscious gastric fistula cat under basal conditions and against different stimuli. (R)-alpha-methylhistamine (0.05 - 0.2-mu-mol/kg/h) was ineffective against spontaneous and dimaprit-induced acid secretion;it also did not reduce significantly pentagastrin-induced acid output, but caused a dose-dependent (0.05 - 0.1-mu-mol/kg/h) and significant inhibition of the acid response to 2-deoxy-D-glucose. Thioperamide (0.02 - 0.04-mu-mol/kg/h) did not modify spontaneous acid secretion, whereas it evoked a significant enhancement of the acid response to submaximal doses (50 mg/kg i.v.) of 2-deoxy-D-glucose. Thioperamide completely reversed the inhibitory effect of (R)-alpha-methylhistamine against 2-deoxy-D-glucose-induced secretion, while leaving unaffected the inhibition induced by somatostatin. These data suggest that histamine H-3 receptors may be involved in the control of acid secretion stimulated by indirectly acting secretagogues.

关键词： 人口控制   资源人均意识   自然资源  

关键词： lateral geniculate body   superior colliculus  

关键词： 人口控制   人口增长过快   社会政治环境   人口问题   生育观念   社会经济发展   出生人数   自增率   城市人口   人口数量  

摘要： 人口增长过快,一直是困扰我们社会经济发展的一个突出问题,也是加大改革难度,影响改革充分发挥效益的重要原因。当前出现明显的通货膨胀,尖锐的社会供需矛盾,以及社会诸多的实际问题,除了经济方面的因素外,与人口的增长过快也有着密切关系。为了搞好治理整顿,深化改革,实现全省经济的稳定发展,就必须创造一个良好的、安定的社会政治环境,这其中也包括要创造一个有计划增长的良好人口环境。

关键词： 认知结构   控制场   软件系统   信息场   控制论   硬件系统   人际关系   控制信息   对象化   控者  

摘要： 一、问题的提出无容置疑,如何控制人生,这是摆在所有人面前的一个千古不衰的问题,无论这个人是一个哲学家,还是一个普普通通的人。而每一个时代,对这个问题的解答是干差万别的,探索的方式也不尽相同。遗憾的是,过去的各种探索方式和得出的结论都不能说服现代的人。原因在哪里呢?我认为,还是方式方法问题。当今,从心理学到哲学,乃至整个学术界都发生了深刻的变革、或深刻化、或广泛化,最根本的还是方法上的变革。

关键词： 意识   心理   认识   情感   意志   生理   病理   控制  

摘要： 本文从马克思主义哲学关于物质决定意识,意识又能动地反作用于物质的原理,论述了人的生理和心理、躯体和精神的辩证统一关系,着重探讨了意识对生理、病理的控制作用。心理、意识是由认知、情感、意志所构成,它们既能引起人的心身疾病,又能治疗人的心身疾病。充分认识和高度重视心理、意识对人的生理、病理的控制作用,对增进人类的身心健康有着极为重要的意义。

关键词： Absorption   enhancement   Administration   rectal   Ampicillin   Decanoate  

摘要： Because of the relatively poor intestinal absorption of ampicillin sodium, efforts have been made to enhance ampicillin absorption by co-administration of absorption promoters. In the present study the enhancing effect of sodium decanoate on rate and extent of rectal ampicillin absorption in rats has been evaluated after rate-controlled and site-controlled delivery of aqueous solutions. Rectal absorption without enhancer was extremely low (8±7%), and the addition of 0.032M sodium decanoate gave comparable values. However, administration in 0.16M decanoate considerably increased ampicillin bioavailability, to 79±30%, whereas the absorption rate was not significantly affected.

关键词： 法律意识   一般属性   法律意义   标准体系   信息控制   主体   法律知识   信息科学   四十年代   信息交换  

摘要： <正> 本世纪四十年代以来,随着以信息论、控制论、系统论为主体的信息科学的产生,一场声势浩大的信息革命不仅给自然科学领域带来了深刻的变革,而且也强烈地冲击着社会科学的各个领域。这场革命的三大支柱是信息、控制和系统,而信息又是其中最基本的,因为所谓系统,不过是一种利用信息的形式,控制也仍然是对信息的控制。从这一角度出发,本文试图将法律意识纳入价值标准体系的范畴,运用信息科学的一些基本原理,分析法律意识所

关键词： Amylases/secretion   Animals   Cholecystokinin/metabolism   Cholecystokinin/physiology   Consciousness   Duodenum/metabolism   Feedback   Male   Pancreas/secretion   Pancreatic Juice/physiology   Peptide Fragments/metabolism   Rats   Rats, Inbred Strains   Trypsin/secretion  

摘要： Using a specific radioimmunoassay for cholecystokinin (CCK) we have studied the relation between circulating CCK concentrations and the feedback regulation of pancreatic enzyme secretion in conscious rats. Recirculation of diverted bile-pancreatic juice into the duodenum or intraduodenal perfusion of trypsin during biliary-pancreatic juice diversion produced basal output of amylase and trypsin and low portal CCK levels (<10 pmol/L). Biliary-pancreatic juice diversion or inactivation of trypsin caused increased CCK concentrations (peak values 50–100 pmol/L) and enzyme outputs. During biliary-pancreatic juice diversion, infusion of the CCK receptor antagonist proglumide suppressed the enzyme response without altering the increase in CCK. Measurement of portal and peripheral CCK during biliary-pancreatic juice diversion yielded values of 131 ± 37 and 32 ± 5 pmol/L, respectively. The peripheral CCK levels corresponded to concentrations achieved during exogenous CCK-8 infusion which resulted in similar enzyme outputs. Gel chromatography of portal plasma during diversion of biliary-pancreatic juice revealed one peak of CCK corresponding to CCK-8, and a larger peak eluted between CCK-33 and CCK-8, probably representing CCK-22. Similar CCK components were found in water extracts of jejunal mucosa, whereas the acetic acid extracts mainly contained CCK-33/39. We conclude that the negative feedback regulation of pancreatic enzyme secretion in rats is mediated by the release of CCK from the intestine and that the major molecular form of CCK in plasma is probably CCK-22.

关键词： 慢练   大脑   乐曲   音乐作品   手指动作   练琴  

摘要： 慢练即指放慢速度练习。这是器乐学习中不可缺少的一个重要环节。它不仅对于掌握和驾驭高难度技巧有着明显地效果,且对于巩固和提高已经掌握了的技巧极有益处。慢练可以说是解决一切技术困难的法宝;是器乐学习者取得成功的必经之路。因此,不