从延宕的懦夫到成熟的复仇者——电影《邪不压正》中李天然形象分析

电影《邪不压正》讲述了青年义士李天然的复仇故事。区别于传统的侠义复仇，李天然的复仇心理矛盾多变，一度展开了“To do or not to do ”的艰难抉择。在对复仇伦理的探索和对复仇动机的严肃拷问中，李天然逐渐突破复仇障碍，从一个幼稚延宕的懦夫成长为一位成功的复仇者。论文将围绕李天然的复仇过程讨论人物的心理成长历程，阐释人物逐渐成熟的复仇理念。通过复仇，李天然实现了对自我生命局限的突破，进一步追求英雄理想。这也是复仇者形象的一个新维度。

辽西地区鼠李天然灌丛的林相结构调查与生态评价

辽西地区地处北温带大陆性季风气候区,自然气候表现为以半湿润为主向半干旱为主过渡,在一些立地条件较差的阳坡地块,以石灰岩为成土母质,土层瘠薄,一些耐旱灌丛都不易生长成林。鼠李天然灌丛具有超强的耐旱、耐贫瘠的抗逆性,在一些地块形成大面积的天然灌丛,通过对鼠李灌丛林分结构组成的调查,掌握其林分的形成机理、群落特征,并对林分进行生态评价,为进一步进行生态保护与生态修复提供技术支撑。

Biodegradation of crude oil by Pseudomonas aeruginosa in the presence of rhamnolipids

The potential biodegradation of crude oil was assessed based on the development of a fermentative process with a strain of Pseudomonas aeruginosa which produced 15.4 g/L rhamnolipids when cultured in a basal mineral medium using glycerol as a sole carbon source. However, neither cell growth nor rhamnolipid production was observed in the comparative culture system using crude oil as the sole carbon source instead. As rhamnolipid, an effective biosurfactant, has been reported to stimulate the biodegradation of hydrocarbons, 1 g/L glycerol or 0.22 g/L rhamnolipid was initially added into the medium to facilitate the biodegradation of crude oil. In both situations, more than 58% of crude oil was degraded and further converted into accumulated cell biomass and rhamnolipids. These results suggest that Pseudomonas aeruginosa could degrade most of crude oil with direct or indirect addition of rhamnolipid. And this conclusion was further supported by another adsorption experiment, where the ad-sorption capacity of crude oil by killed cell biomass was negligible in comparison with the biologic activities of live cell biomass.

愧疚

放学时，我拖着沉重的双腿一步一挨地独自走在回家的路上。想到考试前妈妈想方设法给我做好吃的，说什么复习考试累得加强营养，“多吃点鱼对大脑有好处”，调样做各种鱼，把鱼刺儿摘出，留下白花花的鱼肉，夹在我碗里让我吃；每天放学，把苹果削好皮，橘子掰成瓣儿放在果盘里让我吃……我的泪水就不停地在眼眶里打转儿。