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Search Results: 1 - 10 of 31571 matches for " 梁财 "
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丽蝇科两种中国新记录

动物学研究 , 1987,
Abstract:
不同含水率褐煤粉的输送流动特性及稳定性
张中林,
过程工程学报 , 2013,
Abstract: 在高压浓相输送实验台上利用氮气进行了褐煤粉输送实验,考察了褐煤粉含水率对输送压损特性、质量流量及稳定性的影响,采用小波分析理论对输送压损信号进行了分析,根据差压波动不同频率段的能量、波幅和方差等特征参数,并结合褐煤粉不同含水率下的输送特性及煤粉的表观形貌分析,进行系统输送稳定性判别.结果表明,随煤含水率增大,其输送压损和质量流量减小,输送稳定性明显下降,压损呈周期脉冲.含水率低于5.36%时,系统输送特性良好,含水率为5.36%~8.56%时,系统不稳定,含水率超过8.56%时,系统稳定性急剧下降,并经常堵塞.差压信息的小波分析结果显示,在不同含水率褐煤粉的输送过程中,当差压信号的能量、波幅和方差主要分布在低频段时,输送过程较稳定,当这些特征参数向高频段转移时,输送稳定性随之下降.
FOUR NEW SPECIES OF THE GENUS Hepialus (GHOST MOTH)FROM YUNNAN, SICHUAN OF CHINA(Lepidoptera: Hepialidae)
滇川蝠蛾四新种(鳞翅目:蝙蝠蛾科)

Liang Xingcai,

动物学研究 , 1995,
Abstract: In the present paper, four species of the genus Hepialus are described as new. All the type specimens were collected in the snow mountains and deposited in Kunming Institute of Zoology, the Chinese Academy of Sciences.1 Hepialus zhongzhiensis Liang sp. nov. (Fig. 1-3)Body length 15 mm, forewing length 17 mm, postwing 15 mm.Body colour is dark brown, antennae filiform, labial palps short, the length of Cup vein of forewing is short and not reach middle area of the wing, two cross vein present above and below Cup vein of forewing; In male genitalia, valve in the upper end is round, midarea thiner and with one tooth at the base part, female genitalia as shown in Fig. 2, terminal part of tegument sclerotized and with some tiny teeth.It differs from Hepialus yeriensis Liang in valve slender and flat, tegument with some tiny teeth.Holotype , allotype , paratype 1 , 1 , Renzhi snow mountain, Deqin County, Yunnan, China. 8, July, 1987.2 Hepialus yeriensis Liang sp. nov. (Fig. 4-6)Body length 16 mm, forewing 17-20 mm, postwing 16-18 mm.Compound eye dark, ocell degenerate, mouth degenerate, palps short, antennae filiform, there are 21 segments, palps short, the hair on the head dark, with two white hair bands on the back of the forethorax, in the male genitalia, valve strong, there is one tooth at the base.It differs from H. renzhiensis in valve with club shape in apical part and tooth shape.Holotype , allotype , paratype 3 $ , 4 , Yeri snow mountain, DeqinCounty, Yunnan, China. 6-20, July, 1987.3 Hepialus callinivalis Liang sp. nov. (Fig. 7-9)Body length 17- 18 mm, forewing length 19-20 mm, postwing length 16 mm.Antennae filiform, Cup vein of forewing short, not reach the wing margin, between the veins CuA and Cup with one cross vein, between the veins A and Cup with two cross veinj In the male genitalia, valve small and short, there is one concave area on its back.It differs from H. meiliensis in valve small and thiner, margins not smooth.Holotype , allotype , paratype 1 , 1 , Meili snow mountain, Deqin County, Yunnan, China. 4, July, 1987.4 Hepialus litangensis Liang sp. nov. (Fig. 10-12)Body length 17-22 mm, forewing length 18 mm, postwing length 17 mm.The hairs on the head yellow, antennae filiform, 20 segments, the 7th segment is more wider than the other segments. In forewing, there is one free vein on the part of R4contact with R2+3; In the male genitalia, the upper part of valve is slender, base part of valve big, there is one concave part on the lower place. Female genitalia as Fig. 11.It differs from H. deqinensis in valve from base to apical part decrease, inner side concave, out side with fine teeth on the mid part and concave on the base.Holotype , allotype , paratype 1 , Litang, Sichuan, China. 11, July, 1987.
发光甲虫与生物荧光
李学燕,
应用昆虫学报 , 2006,
Abstract: 生物荧光是活体生物自身可以发光的有趣生命现象。具有这一现象的生物存在于生物四界中,但目前关于这一现象的研究报道主要来自于昆虫,尤其是以萤火虫为代表的发光甲虫的研究。文章对发光甲虫的分类地位、生物荧光发生的原理、发光器官的类型、闪光的“开关”机制、生物
横断山地区果蝇三新种(双翅目:果蝇科)
张文霞,
昆虫学报 , 1995,
Abstract:
加压气化炉给料系统变水分输送特性
张中林,,陈晓平
煤炭学报 , 2012,
Abstract: 在高压浓相输送试验台上进行煤粉输送试验,考察煤粉含水率对压损特性、质量流量的影响规律。结果表明:随着含水率的增加,褐煤的质量流量逐渐减小,烟煤的质量流量先增大后减小,相同含水率下褐煤的流动性较好。
多煤层叠置独立含气系统中煤储层孔隙特征研究
冲冲,,李腾
煤炭科学技术 , 2013,
Abstract: 基于黔西比德—三塘盆地煤样工业分析、扫描电镜试验及压汞试验结果,研究了多煤层叠置独立含气系统下煤储层的孔隙特征。研究表明:比德—三塘盆地煤储层孔隙较为发育,孔隙率相对较高,以小孔和微孔为主,孔隙的连通性较好;研究区内煤层孔隙率与煤变质程度有明显的相关性,随煤阶增高,孔隙率呈现先增大后减小的趋势,在最大镜质组反射率约为3.00%时达到最大值;多煤层叠置独立含气系统内,在水公河向斜和三塘向斜,随着煤层埋深的增加,各煤层孔径先增大后减小,16号煤层是变化的节点,孔隙的连通性则先变差后变好;在珠藏向斜,各煤层孔径大小和孔隙的连通性都变化不大,推测是因16号煤层的煤样中充填了部分石英及黏土矿物,导致其总比孔容变小。
热带气旋强度变化机制的位涡拟能诊断研究
,必骐
华东政法大学学报 , 1995,
Abstract: 分析表明,热带气旋(TC)区域平均的位涡拟能变化对应热带气旋强度变化是一致的.本文通过对切向波数域中位涡拟能收支的计算,分析讨论了影响TC强度变化的一系列因子.结果表明,平均非绝热加热随高度变化并通过气旋性涡度及科氏效应的作用是影响TC强度变化的重要因子,特别在强度突然加强阶段;当加热最大值出现在对流层中上层时有利于TC的形成及加强,而当加热的这种作用减小或最大加热出现在对流层中下层时TC将很快减弱.研究表明,TC环流的轴对称场和非轴对称场对TC强度变化起不同的作用.此外,对其他因子的作用也进行了讨论.
凹凸棒黏土对燃煤pm2.5排放及团聚捕集特性影响
陈惠超,吴玮,
燃料化学学报 , 2015,
Abstract: ?在固定床反应系统上考察凹凸棒黏土对燃煤可吸入颗粒物pm2.5的排放及团聚捕集特性影响,分析凹凸棒黏土添加量以及添加凹凸棒黏土情况下燃烧气氛、燃烧温度和钙硫物质的量比等参数对燃煤pm2.5的数量浓度、质量浓度以及团聚捕集率的影响规律。结果表明,煤燃烧过程中添加凹凸棒黏土可以显著降低pm2.5排放浓度,凹凸棒黏土的添加量不宜超过3%(质量分数);空气气氛下燃烧产生的pm2.5多于o2/co2气氛;随着钙硫物质的量比的增大,pm1的质量浓度减小,但pm1~2.5的质量浓度增大,颗粒物的粒径有向更大粒径转移的趋势;燃烧温度的升高会促进pm2.5各粒径范围颗粒物的生成,降低了凹凸棒黏土对pm2.5团聚捕集率。
除虫菊酯和迷迭香对大鼠大脑突触体atp酶的活性影响
刘子超,
应用与环境生物学报 , 2008,
Abstract:
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