贵州环口螺科一新种(前鳃亚纲:中腹足目:环口螺科)

1998年7-8月作者在贵州南部地区考察,获得陆生贝类标本一批,经鉴定发现1新种,即茂兰腹皱螺Gastroptychia maolanensis sp.nov。隶属于前鳃亚纲,中腹足目,环口螺科,腹皱螺属。描述了新种形态特征,栖息环境,并对其近似种进行了讨论。     

西藏陆生贝类二新种（前鳃亚纲：中腹足目：环口螺科）

记述中国西藏环口螺科2新种,察隅褶口螺ptychapoma zayuensis sp.nov.和下察隅倍唇螺Diplommatina xiazayuensis sp.nov.。对新种进行了描述,并与近似种进行了比较。     

中国倍唇螺属一新种记述(前鳃亚纲,中腹足目,环口螺科)

笔者对我国已记载的倍唇螺属Diplommatina Benson,1849种类进行了厘订,并对馆藏的该属标本进行整理和鉴定,发现1新种,即兴义倍唇螺Diplommatina xingyinensis sp.nov.,新种隶属前鳃亚纲、中腹足目、环口螺科、倍唇螺属.对新种形态特征、栖息环境进行了记述,并对其近似种进行了讨论.     

中国倍唇螺属一新种记述(前鳃亚纲,中腹足目,倍唇螺科)

笔者在贵州省罗甸地区进行野外调查时获得陆生软体动物标本一批,经整理鉴定,得1新种,即罗甸倍唇螺Diplommatina luodiannensis sp.nov.。隶属前鳃亚纲、中腹足目、倍唇螺科、倍唇螺属。我国已记载倍唇螺属的种类有34种和亚种,主要分布于我国南部及长江流域一带地区。对新种形态特征、栖息环境进行了记述,并与近似种进行了比较和讨论。     

云南省西双版纳及邻近地区陆生贝类的新种记述与动物地理学分析(腹足纲:前鳃亚纲:原始腹足目:中腹足目)

本文分析了西双版纳及邻近地区陆生贝类地理分布结果,认为以东洋界的成分为主,因其所处的地理位置、植被等决定。调查中共发现11新种,文中报道了6个新种和14个中国新纪录：即勐仑土鸥螺Georissamenglunensissp．nov,微小倍唇螺Diplommatinaminus-culussp．nov,肘形倍唇螺Delbow-forissp．nov,勐仑蛹螺Pupinamenglunensissp．nov,勐仑沟螺Dioryxmenglunensissp．nov,黑带环口螺Cyclophorusateribalteiformissp．nov。     

中国裂唇螺属一新种记述(前鳃亚纲,中腹足目,蛹螺科)

笔者在整理福建龙岩地区陆生贝类标本时,经比对鉴定发现1新种,龙岩裂唇螺Schistoloma longyanensis sp.nov..隶属前鳃亚纲、中腹足目、蛹螺科、裂唇螺属.对新种形态特征、栖息环境作了记述,并与近似种进行了比较讨论.     

莽山陆生贝类一新种(前鳃亚纲,中腹足目,环口螺科)

笔者于2001年5—9月在湖南莽山自然保护区进行陆生贝类多样性调查,获得陆生贝类标本一批,经鉴定发现1新种,即莽山倍唇螺Diplommatina mangshanensis sp.nov,其隶属于腹足纲、前鳃亚纲、中腹足目、环口螺科、倍唇螺属。对新种形态特征、栖息环境进行了详细记述,并与近似种进行比较。     

福建弯螺属一新种记述(肺螺亚纲,柄眼目,扭轴蜗牛科)

记述了中国弯螺属1新种,即福州弯螺Sinoennea fuzhuouensis sp.nov..弯螺属的种类主要分布于东亚和南亚地区,对新种的形态特征进行了详细描述,并与近似种进行了比较和讨论.     

中国云南喇叭螺属一新种(肺螺亚纲,柄眼目,虹蛹螺科)

详细记述了喇叭螺属Boysidia一新种,金平喇叭螺新种Boysidia(Bensonella)jinpingensis sp.nov.。对新种的形态进行了详细描述,并与其近似种进行了对比和讨论。模式标本保存于昆明医科大学细胞生物学与医学遗传学系标本室。     

青海华蜗牛属一新种记述(肺螺亚纲:柄眼目:巴蜗牛科)

记述采自青海省达蛭华蜗牛属蜗牛1新种：达日华蜗牛Cathaica(Campylocathaica)darlagensis sp.nov。新种壳相与Cathaica(Campylocathaica)cunlunensis(Moellendorff,1899)相近,但新种壳高／壳径之比值较大,唇下部较平直,贝壳色带不同于后者。正模成螺,青海省达日县城,海拔3980m,1997－08－17,采集人李维平;副模5只成螺,采集数据同正模。模式标本保存于中国科学院动物研究所。     

Quadruplexes of human telomere DNA analogs designed to contain G:A:G:A,G:G:A:A,and A:A:A:A tetrads

Replacement of two to four guanines by adenines in the human telomere DNA repeat dG₃(TTAG₃)₃ did not hinder the formation of quadruplexes if the substitutions took place in the terminal tetrad bridged by the diagonal loop of the intramolecular antiparallel three‐tetrad scaffold, as proved by CD and PAGE in both Na⁺ and K⁺ solutions. Thermodynamic data showed that, in Na⁺ solution, the dG₃(TTAG₃)₃ quadruplex was destabilized, the least by the two G:A:G:A tetrads, the most by the G:G:A:A tetrad in which the adenosines replaced syn‐guanosines. In physiological K⁺ solution, the highest destabilization was caused by the 4A tetrad. In K⁺, only the unmodified dG₃(TTAG₃)₃ quadruplex rearranged into a K⁺‐dependent quadruplex form, none of the multiple adenine‐modified structures did so. This may imply biological consequences for nonrepaired A‐for‐G mutations. © 2010 Wiley Periodicals, Inc. Biopolymers 93: 880–886, 2010.     

Oka: Behind the Barricades: Kanehsatake: 270 Years of Resistance: Spudwrench: Kahnawake Man: My Name is Kahentiiosta: Acts of Defiance

Oka: Behind the Barricades. 1998. 312 minutes. For more information contact the National Film Board of Canada, 3155 Côte de Lisse Rd., St. Laurent, Quebec H4N 2N4. Series of four videos:
Kanehsatake: 270 Years of Resistance. 1993. 120 minutes. Directed by Alanis Obomsawin .
Spudwrench: Kahnawake Man. 1997. 58 minutes. Directed by Alanis Obomsawin .
My Name is Kahentiiosta. 1995. 30 minutes. Directed by Alanis Obomsawin .
Acts of Defiance. 1992. 104 minutes. Directed by Alec MacLeod .