385名大学生白发情况调查现状及白发原因分析

为了解大学生白发现状以及相关的影响因素，动态分析白发现象的原因.通过体查、问卷调查.结果发现385名大学生中有白发者182名，占47.27%.随着年龄的增加，其白发发生率逐年上升.与白发相关的影响因素中，情绪紧张的占34.60%，挑食与偏食的占76.92%，其父母在45岁之前有白发的占70.3%，生活环境受到污染的占67.6%.说明父母遗传、不良饮食习惯、紧张的情绪、环境污染等是青少年头发早变白的主要原因.     

Two new species of Bonnetina tarantulas (Theraphosidae: Theraphosinae) from Mexico: contributions to morphological nomenclature and molecular characterization of types

Two new species of tarantulas from Mexico are described and illustrated: Bonnetina tenuiverpis and Bonnetina juxtantricola, from the states of Mexico and Guerrero, respectively. Male palpal bulbs, tibial apophyses and spermatheca are among the most taxonomically informative characters. Male bulb microstructure is revealed from scanning electron microscopy; both new and homologous structures to other Theraphosinae genera are identified and described. Nomenclatural changes for male tibial apophyses are also proposed. The holotype male and allotype female of one of the species are molecularly characterized and matched from CO1 partial sequence.

http://zoobank.org/urn:lsid:zoobank.org:pub:BBDBBEDE-6983-4F5C-B34C-4622DF494C84     

废牦牛毛制取胱氨酸和复合氨基酸的研究

研究了用废牦牛毛为原料提取重要医药原料胱氨酸，用制备胱氨酸后的母液生产新型饲料添加剂——复合氨基酸螯合物．     

棉／维纶混纺纱及其针织产品性能分析

对棉/维纶混纺纱线及其针织物进行了退维工艺处理,从而获得相应纱线及其针织物.并对处理前后纱线的断裂强力、失重率、毛羽以及织物的压缩性能、保暖性和吸湿快干性进行了测试分析,得出该纱线具有良好的机械与服用性能.     

The larval development of Argulus coregoni Thorell (Crustacea: Branchiura)

Summary

The larval development of Argulus coregoni from the first to the ninth stage was studied, with special reference to the morphological changes of the appendages and some other parts of the body.

A newly hatched larva is a copepodid-form measuring 0·6–0·7 mm long and approaches the shape of the adult after moulting into the second stage (0·7–0·9 mm). Throughout the larval stages, the first maxilla shows the most remarkable modification. The larvae of the first to the fifth stage are equipped with two strong, curved claws, which act as a clasping organ, at the terminal segment of the first maxilla. The basal segment expands considerably at the third stage (0·9–1·1 mm) prior to forming a sucker at the sixth stage (1·7–2·2 mm). The claws start to degenerate at the fifth stage (1·4–1·8 mm), but are still recognizable as a rudiment after the seventh stage (2·2–2·6 mm). The other distinct morphological changes that occurred are: (1) bifurcation of the anterior part of the dorsal ridges on the carapace, (2) development of the male accessory copulatory organ at the basal segments of the second to the fourth legs, (3) number of posteriorly directed minute spines on the ventral surface of the carapace, (4) number of elements in the supporting ribs of the suckers, (5) number of spines found at the first segment of the second maxilla, and (6) number of setae on the four pairs of thoracic legs.

The larval forms of A. coregoni younger than the fourth stage (1·1–1·4 mm) are indistinguishable from those of A. japonicus and A. foliaceus.     

多裂叶荆芥盾状腺毛的形态结构和发育的研究

多裂叶荆芥（Schizonepeta mulifida(L.)Briq.)叶上盾状腺毛的研究表明：盾状腺毛是由腺毛原始细胞经过二次平周分裂和分泌细胞的原始细胞经过4次垂周分裂形成。其结构模式为1个基细胞，1个扁平的柄细胞和由12（13）个分泌细胞构成的头部，其头部分泌细胞明显呈两环排列。     

烟草叶片腺毛的研究

对烟草K326再生植株叶片腺毛的密度、发生及形态结构的研究表明，烟草幼叶腺毛密度较大，随叶片的发育而逐渐降低，烟草腺毛分为长柄腺毛与短柄腺毛两种类型，都由原始表皮细胞经过不同的分裂形式而最终发育成为腺毛，腺毛分泌细胞中有多糖类物质存在。     

淮北城乡婴幼儿头发中微量元素锌、铁、铜水平的比较研究

考查了淮北城乡0－7岁婴幼儿头发中微量元素锌、铁、铜水平的差异,统计结果表明,城乡各年龄段儿童头发中微量元素锌、铁、铜（均值）含量,除0－1岁发中铜含量无差异外,其它匀有差异,发中锌、铁差异特别显著。发中锌、铜农村组低于城市组,而铁城市组低于农村组。