李政, 宋益善, 左思语,刘超,马晨晨

氨基酸分子首次用以制备构筑稀土介孔发光材料.L-丝氨酸通过分子修饰得到新配体2-烟酰氨基-3-羟基丙酸(L),并进一步引入MCM-41介孔基质中,最后和稀土Tb3+离子复合得发光介孔材料Tb-L-MCM-41.通过核磁共振、紫外、XRD、氮吸附和荧光光谱等对配体和杂化材料的结构和性质进行了表征.结果表明,配体L很好的引入到MCM-41介孔基质中,Tb-L-MCM-41介孔材料呈现L的特征紫外吸收.同时,稀土配合物的引入占据了MCM41基质的部分孔道,使其比表面和孔体积都有所降度.Tb-L-MCM-41呈现稀土Tb3+离子的特征光.     

曹秀芹,程琳,吕小凡

以EPA推荐的7种多氯联苯(PCB28、PCB52、PCB101、PCB118、PCB138、PCB152、PCB180)为标准,采用固相萃取前处理技术(SPE)和气相色谱-质谱连用法(GC-MS)对某市5座污水处理厂进水中的典型持久性污染物(POPs)多氯联苯(PCBs)进行分析研究。结果表明,在该市城市污水中共检出7种PCBs,浓度在0.48～17.29ng/L之间。5座污水厂进水中的PCB28和PCB52浓度均较低,甚至未检出;PCB138、PCB152和PCB180的浓度普遍较高。在实验测试基础上,比较国内外相关研究中关于城市污水中PCBs的含量,以进一步分析该市城市污水中PCBs的污染水平。5座污水厂进水中7种目标PCBs的总量平均值为39.832ng/L,在参与比较的区域中,本市城市污水中PCBs的污染水平处于中等水平。     

臧知明,张齐,张曼,戴建业,武丽

瑶医药与中医药同源于伏羲神农,奠基于春秋诸子百家.两者具有相同的传统文化核心,如出一辙的思维模式,只是在秦汉之后,瑶医药与中医药出现明显分野,尤其是药学体系差异颇大.虽然在盛世太平年代,汉、瑶医药学也有交叉融合,但最终形成了不同于中医药的理论与实践体系,为中国民族医药学的繁荣发展做出了贡献.     

必然,可能,偶然,风马牛

在普通逻辑思考实际中,必然既不是1元的模态词,而且,必然与恒真的真值函数之间也并无内在联系。“A必然B”的含义为:“可独立于A、B的真值确定不会是A真而B假”,其中的“可独立于A、B的真值确定”称为“第一独立性”。“A必然B”的符号表达式为“A B”,可念作“A制约B”,其中的称为“制约号”,是2元的非正统的联结号。可能就是不必然不;偶然就是不必然且可能;“A风马牛B”的含义为“把A或 H、B或 B不论是放在前域还是后域,这之间的关系都是偶然”,故而也可称为“彻底的偶然”。容易验证,从语义上说,正统一阶谓词演算中的A B(A蕴涵B)和在其它语言中用来作为逻辑工具的“若A,则B”之间的关系是风马牛。     

深化改革,加强管理,强化素质教育,全面提高教学质量

文章从教学内容、课程体系、管理工作、师资队伍建设、实验室建设和管理、多种形式教学等方面阐述了“深化改革、加强管理、强化素质教育,全面提高教学质量”问题。     

转变观念,找准位置,引导学生,正确择业

近年来,学生就业成为全社会的焦点。在新的就业形势下,如何正确引导高职（中专）生转变就业观念,树立正确的就业观,引导他们成功地走向社会,尽快实现＂角色＂转变？找准定位,顺利就业,是摆在我们面前的一项重要任务。     

硫化镉,纳米硫化锌,硫化汞,氧化汞的合成

本文在室温固相化学反应法的基础上使用了表面活性剂,使合面条件降低,合成方法完善.在温和的条件下,制备出了粒度小于100纳米的硫化镉、硫化锌、硫化汞、氧化汞.     

ICP—AES法测定人体血清中的Al,Be,Cu,Mn,Mo,V元素

用ICP-AES法同时测定人体血清中Al,Be,Cu,Mn,Mo,V六种元素。Al,Cu,Mo的检出限为1—3μmol/l,Be,Mn,V的检出限为0.1—0.3μmol/l;回收率在100±20%之间。该方法耗样少,速度快。     

New fossil elaterids （Insect： Coleoptera： Polyphaga： Elateridae） from the Middle Jurassic of Inner Mongolia, China

A new genus with a new species of fossil elaterid, Paraprotagrypnus superbus gen. et sp. nov., from the Middle Jurassic Jiulongshan Formation in Daohugou Village (N41°18.979′, E119°14.318′), Shantou Township, Ningcheng County, Inner Mongolia, China is described and illustrated. The genus Paraprotagrypnus belongs to the family of Elateridae, subfamily of Protagrypninae and tribe of Protagrypnini. Some primitive characters of the new genus and new species shed light on the ages between the Jiulongshan Formation in Inner Mongolia and the Yixian Formation in the western Liaoning Province of China. The habitat of the new species is briefly discussed.     

Two new Jurassic stoneflies （Insecta： Plecoptera） from Daohugou,Inner Mongolia,China

Two new genera and two new species of family Taeniopterygidae, Mengitaenioptera multiramis gen. et sp. nov. and Noviramonemoura trinervis gen. et sp. nov. are described. These fossils were collected from Daohugou Village （the Middle Jurassic）, Inner Mongolia, China. Hitherto, these fossil species from Daohugou are the oldest taeniopterygids. Both simple and complex venations simultaneously occurred in this group, which reveals that the early diversification of taeniopterids was well underway by the Middle Jurassic. Therefore, we prefer to adopt the Comstock＇s opinion that the venation of taeniopterids was derived from the simple venation of the older group （such as Palaeonemouridae） at much ancient geological time ago. Some of the descendants carried this simple venation; others evolved into complex venation with many additional crossveins and branches.     

A new fossil genus of Mesosciophilidae （Diptera, Nematocera） with two new species from the Middle Jurassic of Inner Mongolia, China

A new genus within the family Mesosciophilidae,Jurasciophila gen.nov.,with two new species,J.curvula gen.et sp.nov.and J.lepida gen.et sp.nov.,are described and illustrated.They are established based on fossil specimens with bodies and complete wings.All of them were collected from the late Middle Jurassic Jiulongshan Formation of Daohugou in southeastern Inner Mongolia,China.Comparing with two known genera,Mesosciophilina (Kovalev,1985) and Mesosciophilopsis (Blagoderov,1994),the new genus has transitional characters.The distribution pattern of Mesosciophilidae is briefly discussed.     

Stratigraphy and age of the Daohugou Bed in Ningcheng, Inner Mongolia

Recent fieldwork has extended the distribution of the Daohugou Bed deposits from the Daohugou Village to its several neighboring areas. The fossil-bearing Daohugou deposits uncomformably overlie complex bedrocks, and comprise three major parts. The red shales in the lower part were misidentified as belonging to the Tuchengzi Formation. Field excavation has indicated that the shales of upper part of the bed are the major fossil-bearing horizon. Due to strong tectonic activities, sediments were often folded with the sequences inverted in the region. Some newly recognized contacts between the Daohugou Bed and the volcanic rocks showed that the ignimbrite of the Tiaojishan Formation （159-164 Ma） underlies the Daohugou deposits, rather than overlying the latter as previously proposed. Thus, the age of the Daohugou deposits should be younger than the age of the ignimbrite, and thus it was incorrect to correlate the Daohugou Bed with the Middle Jurassic Jiulongshan Formation. Although biostratigraphic studies based on conchostracans and insects support a Middle Jurassic-early Late Jurassic age for the Daohugou deposits, vertebrate fossils such as Liaoxitriton, Jeholopterus and feathered maniraptorans show much resemblance to those of the Yixian Formation. In other words, despite the absence of Lycoptera, a typical fish of the Jehol Biota, the Daohugou vertebrate assemblage is closer to that of the Early Cretaceous Jehol Biota than to any other biota. We propose that the Daohugou fossil assemblage probably represents the earliest evolutionary stage of the Jehol Biota based on both vertebrate biostratigraphy and the sedimentological and volcanic features which suggest the Daohugou deposit belongs to the same cycle of volcanism and sedimentation as the Yixian Formation of the Jehol Group.     

Preliminary elemental analysis of fossil insects from the Middle Jurassic of Daohugou, Inner Mongolia and its taphonomic implications

Fossil insects from the Middle Jurassic of Daohugou, Inner Mongolia were investigated using Scanning Electron Microscope (SEM) for the first time, and portions and distribution of some elements in compression and pyrited fossils were also revealed by X-ray Energy Dispersive Spectroscopy (EDS) attached to SEM. Most of compression fossil insects from the Daohugou Biota are preserved in organic remains (diagenetic products of the original organic components). A small part of compression fossils retain a comparatively high Fe concentration which probably resulted from the absorption of Fe by biopolymers during the decaying period. Pyritized insect fossils suggest that the “fossil envelop” model found in the Early Cretaceous Jehol Biota probably also occurs in the Daohugou Biota. Different preservation modes show various mechanisms of fossilization, and also suggest that several different microenvironments are present in Daohugou palaeolakes. Supported by National Basic Research Program of China (Grant No. 2006CB806400), National Natural Science Foundation of China (Grant Nos. 40872015, 40523004, 40632010), and Special Fund for Graduates in the Graduate University of the Chinese Academy of Sciences     

Two Jurassic salamanders with stomach contents from Inner Mongolia,China

Conchostracans and corixids are part of the diet of extant salamanders,an ecologically important fact in a lacustrine environment. Here we report their discovery in the guts of the aquatic Jurassic salamanders Jeholotriton paradoxus and Chunerpeton tianyiensis, formerly abundant at Daohugou,Ningcheng County,Inner Mongolia,China.This reveals something of the ecology of this im- portant,ancient,vertebrate and invertebrate assemblage.The new fossil evidence indicates the highly selective feeding of these Jurassic salamanders;Jeholotriton preyed only on juveniles of the conchostracan Euestheria luanpingensis,and Chunerpeton only on the corixid Yanliaocorixa chinensis.We can infer the dietary differences as a consequence of different jaw and hyoid structures; and thus niche partitioning in Jurassic salamanders.     

Mesozoic giant fleas from northeastern China (Siphonaptera): Taxonomy and implications for palaeodiversity

The recently discovered definite giant fleas from the Middle Jurassic Daohugou fauna and the Early Cretaceous Jehol fauna of northeastern China represent significant evidence for understanding ectoparasitism in the Mesozoic as well as the evolution of these giant blood feeders with their putative hosts (i.e. hairy or feathered vertebrates). On the basis of seven well-preserved specimens from Daohugou and Huangbanjigou we analyse the systematic classification of these primitive fleas, establishing two new genera and three new species as Pseudopulex wangi sp. nov., Hadropsylla sinica gen. et sp. nov., and Tyrannopsylla beipiaoensis gen. et sp. nov. All of them are assigned to the extinct siphonapteran family Pseudopulicidae, while the Early Cretaceous genus Tarwinia is transferred to Tarwiniidae fam. nov. The basal morphological disparities of Siphonaptera in the Mesozoic are evidenced by the occurrence of at least three distinct groups (pseudopulicids, tarwiniids, and saurophthirids). These disparate morphologies likely indicate adaptations to different hosts.     

九种铁线蕨属植物对中国主要城市的气候适应性研究

蕨类植物铁线蕨科中的假鞭叶铁线蕨(Adiantum malesianum)、灰背铁线蕨(A.myriosorum)、团羽铁线蕨(A.capillus-junonis)、铁线蕨(A.capillus-veneris)、鞭叶铁线蕨(A.caudatum)、白背铁线蕨(A.davadii)、月牙铁线蕨(A.deentulum)、普通铁线蕨(A.edgeworthii)、肾盖铁线蕨(A.erythrochlamys)等9种植物具有较高的观赏价值,在城市景观和绿化建设方面具有潜在的应用前景.了解它们对我国34个省会城市(含2个特别行政区,下同)的气候适应特点,可为这些种类的栽培及推广应用提供理论指导.应用基于RCP45二氧化碳排放情景下的11个当前生物气候数据,以及假鞭叶铁线蕨等9种铁线蕨属观赏蕨类在中国的694个分布记录,应用Max Ent模型和Arc Gis9.3软件,定量地预测了它们在我国的潜在分布范围,计测了它们对各省会城市的气候适应指数.结果表明,9种铁线蕨属植物在我国34个省会城市的气候适应能力有较大差异.假鞭叶铁线蕨、灰背铁线蕨、团羽铁线蕨、铁线蕨、月牙铁线蕨、普通铁线蕨在中国西南地区(四川东南部、重庆、云南、贵州)气候适应性很好,潜在分布范围广;假鞭叶铁线蕨、团羽铁线蕨、铁线蕨、鞭叶铁线蕨对中国华南地区的气候条件有较高的适应性;灰背铁线蕨、团羽铁线蕨、铁线蕨、白背铁线蕨和普通铁线蕨在中国华中的气候有较高的气候适应性;团羽铁线蕨和普通铁线蕨的潜在分布范围覆盖了华北地区的北京、天津和石家庄,它们的综合气候适生指数的平均值达到0.60.     

浙江省2种蕨类植物新记录

报道了2种分布于浙江的蕨类新记录植物,分别是蹄盖蕨科（Athyriaceae）的沼生蹄盖蕨（Athyrium palustre Seriz.）（中国大陆分布新记录）和凤尾蕨科（Pteridaceae）的擬乌来凤尾蕨（Pteris pseudowulaiensis Y.S.Chao）（浙江省分布新记录）,提供了形态描述与生态照片,并讨论了该发现的生物地理学意义,凭证标本保存在浙江自然博物院标本馆（ZM）.     

中国白肩天蛾属记述与一新记录种(鳞翅目:天蛾科)

白肩天蛾属(Rhagastis RothschildJordan,1903)在中国分布有9种.于2017年上半年和2018年上半年分别对贵州荔波县茂兰自然保护区和海南乐东县尖峰岭地区进行考察并采集到一些天蛾标本.在对长喙天蛾族(Macroglossini Harris,1839)的标本进行整理之后发现,其中一些标本为宽缘白肩天蛾(Rhagastis acuta Walker,1856),这是该种首次在中国境内被记录.对该新记录种雄性成虫的形态进行了描述且附图,并对中国白肩天蛾属目前已知的种类进行了记述.