未熟-低熟烃源岩的有机岩石学特征

采用全岩光片镜鉴和显微荧光分析方法 ,对我国不同地区 5 0 0余块未熟 低熟烃源岩样品进行了系统的有机岩石学研究。未熟 低熟烃源岩显微组分组成具有显著的非均质性 ,不同地区显示出陆源组分与水生生源组分不同的“配比”关系 ,反映出其有机质组成的复杂性 ,并确认藻类体、孢子体、树脂体、木栓质体、壳屑体和矿物沥青基质等组分是其最常见的生烃组分。基于对镜质组反射率Ro和孢子体荧光变化等演化指标特征的分析 ,认为未熟 低熟烃源岩有机质早期热演化具有明显的阶段性 ,一般都表现为“二段式”变化 ,其变化界限大致以Ro等于 0 .5 0 %～ 0 .5 5 %为界。     

Gamergates in the myrmicine genus <Emphasis Type="Italic">Metapone</Emphasis> (Hymenoptera:Formicidae)

Gamergates (i.e. mated reproductive workers) are mostly known from ant species within the Ponerinae. We report here the discovery of gamergates in two species of the subfamily Myrmicinae. Until now, mated reproductive females in colonies of myrmicine species have been considered morphologically distinct from the worker caste. However, in two species of the myrmicine Metapone (Metapone madagascarica and a newly discovered, not yet described Metapone species) all workers have six ovarioles and a spermatheca; and some of them are mated. There are no morphological differences between mated and non-mated workers. Field observations and laboratory studies indicate that colonies of the Metapone species can reproduce with gamergates only.     

Vocal acrobatics in a Chinese frog, <Emphasis Type="Italic">Amolops tormotus</Emphasis>

Although amphibians are highly vocal, they generally emit only a limited number of acoustic communication signals. We report here the extraordinarily rich vocal repertoire of Amolops tormotus, a ranid species in China. These frogs produce countless vocalizations, some of which share features of birdsong or primate calls, e.g., ultrasonic frequency components, multiple upward and downward FM sweeps, and sudden onset and offset of selective harmonic components within a call note. Frame-by-frame video analysis of the frog's calling behavior suggests the presence of two pairs of vocal sacs that may contribute to the remarkable call-note complexity in this species. Electronic supplementary material to this paper can be obtained by using the Springer LINK server located at http://dx.doi.org/10.1007/s00114-002-0335-x.     

Pulse cleaning flow models and numerical computation of candle ceramic filters

ＩｎｔｒｏｄｕｃｔｉｏｎＣｌｅａｎｉｎｇｔｈｅｆｉｎｅｐａｒｔｉｃｌｅｓｉｎｈｉｇｈｔｅｍｐｅｒａｔｕｒｅ (450℃ -950℃ )ａｎｄｈｉｇｈｐｒｅｓｓｕｒｅｃｏｎｄｉｔｉｏｎｃａｎｅｎｈａｎｃｅｔｈｅｔｈｅｒｍａｌｅｆｆｉｃｉｅｎｃｙｏｆｃｌｅａｎｃｏａｌｔｅｃｈｎｏｌｏｇｉｅｓｓｕｃｈａｓＩＧＣＣｏｒＰＦＢＣ .Ｒｉｇｉｄｃｅｒａｍｉｃｆｉｌｔｅｒｓｏｆａｖａｒｉｅｔｙｏｆｓｔｒｕｃｔｕｒｅｓａｒｅｕｎｄｅｒｄｅｖｅｌｏｐｍｅｎｔｉｎｐｒｏｇｒａｍｓａｒｏｕｎｄｔｈｅｗｏｒｌｄ ,ｗｈｉｃｈｃａｎｆｉ…     

浅谈化工装置灾害事故的处置

化工生产一般采用温控分离、氧化还原、催化裂解、压力聚合等工艺方法,而化工产品特别是中间产品一般都具有易燃、易爆、有毒、有害和腐蚀等特点.在化工生产的过程中可能发生的各类灾害事故已经成为各级政府和应急救援单位研究的重要课题.下面结合工作实践谈谈化工装置灾害事故的处置思路.     

“十五”期间沈阳市经济发展与环境保护的相互促进分析

论述了沈阳市“十五”期间经济发展及能源消耗的变化趋势,在阐述城市建设对环境保护的促进作用及“十五”期间沈阳市环境质量变化趋势的基础上,对沈阳市经济发展与环境质量的相互促进进行了分析。     

纺织工业空调废水处理回用的试验研究

纺织工业空调排水占整个纺织生产过程排水量的９０％。通过多种方法试验比较，发现用锅炉炉渣过滤处理，出水水质可达到印染用水水质要求。     

Inventory of emissions from major air pollutant categories in Turkey

In this study, an inventory of air pollutant emission estimates from major air polluting sources in Turkey for period between 1985 and 2005 with 5-year intervals were estimated. Inventory covers anthropogenic sources of five major air pollutants of particulate matter, sulfur dioxide, carbon monoxide, nitrogen oxides and non-methane volatile organic compounds. Their break-down with respect to main activity sectors were shown and their distribution by the largest industrial source categories were worked out as annual estimates. This inventory and its analysis point to serious environmental implications of air pollutants and a need to develop a policy plan for reducing these emissions.     

宁夏灌溉回归水开发再利用的评价

宁夏灌溉回归水指灌溉农业土壤深层渗滤水、农田尾水、渠道渗漏水、退水及少量的工业废水和城镇生活污水,年排量３０～３５亿ｍ^３。对灌溉回归水２０种物质含量的评价表明,它属无毒有害型淡水。采取与渠水（来自黄河水）掺灌或轮灌对作物生长无不良影响,也不会引起土壤盐碱化,可大胆开发利用。     

三槽式切换氧化沟运行工况数学模式及应用

三槽式切换氧化沟运行工况呈周期性的变化。根据理论分析，建立了各槽活性污泥浓度变化及相互关系的数学模式，并进行了验证。同时就数字模式在周期程序设置及排泥方式选择时的应用做了说明。