湖南教育报刊社新址景观环境设计

本着对资源的保护与利用、历史文化的延续和景观再生的设计指导思想,针对湖南教育报刊社的发展历史和其新址的自然条件与景观特色,以尊重自然、传承历史文化、创造“天人合一”的人居环境为设计理念,对湖南教育报刊社新址景观环境设计的设计目标和主要设计内容进行了阐述.     

Changes in ovary and testis and breeding fitness of the climbing perch,Anabas testudineus (Bloch, 1792), exposed to sub‐lethal concentrations of monocrotophos

Monocrotophos (MCP) is one of the organophosphate pesticides extensively used in agriculture and animal husbandry. The present study reports the effects of sub‐lethal concentrations of MCP on gonadosomatic index (GSI), gonadal histology and breeding fitness of the fish Anabas testudineus. The fish were exposed to three sub‐lethal concentrations of monocrotophos (T1: 3.5 mg/L, T2: 5.3 mg/L and T3: 10.6 mg/L) for 45 days with 12 fish (males and females in equal numbers) in each tank, and one group was kept as control (C) without any treatment. GSI decreased in all treatment groups in comparison with control. Significant decrease in fertilization and hatching rate was observed at all concentrations in comparison with control on 15, 30 and 45 days of monocrotophos exposure. The decreased vitellogenesis, disruption of follicular wall and oocyte atresia were observed in all the treated females at 30 and 45 days of exposure. Rupture of seminiferous tubules was noticed in all the treated males irrespective of exposure periods. The results thus indicated that monocrotophos could deleteriously impact the gonadal structure and function in A. testudineus, which could seriously impact the reproductive success of the animal.     

河南省农村居民点用地整理综合潜力评价

运用理论与实证相结合的研究方法,在相关理论分析的基础上提出了“分区、分模式、分方法”的基本潜力测算方案,从自然、经济、社会等方面构建评价指标体系,采用多因素综合评价模型测算农村居民点用地整理的综合潜力,并以河南省为研究对象进行潜力测算和整理时序安端.     

水果黄瓜新品种京研迷你5 号的选育

京研迷你5 号为保护地水果黄瓜一代杂种。其母本为从欧洲水果黄瓜品种中经8 代自交选择
获得的高配合力自交系M118。父本为（日本黄瓜自交系J5× 欧洲迷你黄瓜自交系EU11）×EU11 经8 代
自交选择获得的高配合力自交系EUJ4。该品种生长势强，为全雌系。瓜长15～19 cm，单瓜质量90～110 g，
果面光滑，无刺瘤，品质好，产量高。耐低温弱光，耐热。抗霜霉病、白粉病等主要病害。长季节栽培每
667 m ² 产量可达9 600 kg。适于全国各地保护地种植。     

西瓜新品种爱能5 号的选育

爱能5 号母本系湘蜜西瓜F₁ 自交12 代得到的稳定单系XM12，父本系西农8 号F1 自交10代得到的稳定单系XL10。植株生长势强，分枝力强，易坐果。果实椭圆形，果皮黑色，单瓜质量4 ～7kg，果皮厚1.1 cm 左右，瓤红色，肉质细脆，汁多味甜，中心可溶性固形物含量10% 左右。全生育期93d（天）左右，中熟，雌花开放～果实成熟约需32 d（天）。高抗枯萎病，抗疫病和炭疽病，适宜在湖南省及其周边地区种植。     

Stimulating effects of the insecticide chlorpyrifos on host searching and infestation efficacy of a parasitoid wasp

Hymenopterous parasitoids play an important role in the control of insect populations. During oviposition, Hymenopterous parasitoids use cues such as odours from their environment to locate their specific host. Leptopilina heterotoma (parasitoid of Drosophila larvae) locate their host by probing the substrate with the ovipositor. This behaviour can be induced by the odour of the host substrate alone. We analysed the sub-lethal effects of chlorpyrifos at LD20 on the probing activity in response to a fruit odour (banana). The insecticide increased the percentage of females spontaneously probing in response to the odour. Parasitoid females were then conditioned to associate banana odour with the oviposition in host larvae. This conditioning enables parasitoids to memorize the odour and to increase their probing response to this odour. During the olfactory conditioning, females exposed to the insecticide found and oviposited in host larvae more quickly than control females. One hour after the olfactory conditioning, females exposed to the insecticide presented a higher increase of their probing response to the odour than controls. Twenty-four hours after conditioning, the stimulation produced by chlorpyrifos was no longer perceptible, but the level of response of conditioned females was still higher than that of non-conditioned females, showing that odour memory was not impaired by the insecticide treatment. These sub-lethal effects, that stimulate host searching by parasitoids without impairing odour memorization, could increase their parasitic efficiency.     

轮南首站管道弯头爆裂的力学分析

对轮库输油管道轮南首站的Φ720×8 mm管道弯头发生的爆裂进行了力学分析,分析采用了有限元法。分析与计算结果表明,弯头爆裂时的0.04 MPa工作内压不是爆裂的因素,而是由于温差的作用,在弯头处产生较大的弯矩,继而引起较大的弯曲环向应力。当温差超过一定值时,由它所引起的弯曲环向应力使管道弯头焊缝爆裂。     

单颗粒液滴飞溅对颗粒起动的影响

通过室内模拟降雨试验,探究单颗粒液滴飞溅对泥沙颗粒起动的影响。试验共设计4种地表坡度（0,15°,25°,35°）及4种粒径的均匀沙（0.098~0.104,0.104~0.5,0.5~0.78,1~1.4 mm）,选取当量直径为4.5 mm的液滴进行模拟试验,同时利用高吸水树脂材料泡发后的水球作为对照组。结果表明,颗粒直径和坡度的变化对颗粒起动的影响较为显著,飞溅子液滴对液滴溅蚀具有重要意义。随着颗粒直径的增大,颗粒的起动逐渐由液滴冲击和子液滴飞溅裹挟共同作用转变为液滴冲击动能传递为主,飞溅携带为辅。当颗粒直径相同时,坡度的增大导致飞溅沙粒不再均衡,斜坡下方的颗粒飞溅量和位移随坡度的增大而增大。坡度越大,下方颗粒溅蚀深度与上方的差距也越大,导致上方颗粒失去支撑,整体失稳垮塌,发生微小滑坡。同种粒径时,树脂水球溅蚀坑的宽深比明显小于相同直径的液滴溅蚀坑,液滴溅蚀量远大于树脂水球直接撞击作用下起动的颗粒量,子液滴的拖曳对颗粒起动具有重要意义。     

子自仿射集的Hausdorff维数

定义了箱维数，研究了其性质，并获得了Ｈａｕｓｄｏｒｆｆ维数和Ｐａｃｋｉｎｇ维数的另一表达式。最后，计算了一类子集的分数维。     

森林经理工作的形势与对策建议

分析了国有林区森林经理工作所面临的形势与要求 ,就区划林种经营固定小班 ,森林资源调查的深度、质量与方法 ,编制局场两级森林经营方案 ,建立林种小班森林经营档案 ,建立森林经理工作制度 5个问题 ,提出了相应的对策和改革建议