优良灌木树种的引种试验研究

对引进灌木树种的物候期、生长规律、抗旱性、抗寒性进行研究,各树种之间差异较大,美国李、银水牛果、欧李,北美稠李生长表现良好,抗寒、抗旱性强,适宜在干旱半干旱地区发展;西部沙樱、针叶樱桃,当年生长表现较好,第2年春季有抽梢现象,抗寒性、抗旱性居中;美洲朴、毛核木当年新梢生长量大,第2年春季地上部分全部抽梢,抗旱性、抗寒性弱。     

有序样本聚类分析在黄花槐苗高生长期划分中的应用

以苗高净生长量为样本,采用有序样本聚类法,分析一年生黄花槐扦插苗的生长规律,并将其划分为4个阶段,其成活期为3月16日至5月3日,生长前期为5月4日至6月13日,速生期为6月14日至8月31日,生长后期为9月1日至9月21日.其中,只占全年生长期1/4的速生期,其净生长量占全年总生长量的79.33%,所以要加强速生期苗木的水肥管理.     

半夏种内不同变异类型生长节律的比较

[目的]观测研究半夏种内不同变异类型的生长节律。[方法]对半夏种内椭圆形叶半夏、细叶形半夏和4—5叶半夏3种变异类型定期取样进行调查测定,观察其生长节律。[结果]半夏生育期划分为5个时期：出苗期、全苗期、珠芽发笙期、佛焰苞集中出现期以及倒苗期。4～5叶半夏具有出苗率高,出苗较为整齐,珠芽数目多,倒苗率低等优良性状。各类型的佛焰苞发生率和结实率均较低。[结论]今后可着重将4—5叶半夏作为人工栽培的一个主要类型,并作为半夏优良种质进一步选育的方向。     

不同季节与气象因素对橘小实蝇日飞翔活动节律的影响

笔者于2008年夏、秋、冬3个季节,每个季节在福州乌山果园对橘小实蝇进行10d的全天观测,然后各季节分别选择3d晴朗或多云的气候条件下所得数据,结合气象资料,分析比较该虫的日飞翔活动变化情况.结果表明,橘小实蝇在不同季节的飞翔活动节律不同,在晴到多云天气里,该虫夏季的活动高峰期为上午7:00,秋季为上午9:00,冬季则为下午15:00.橘小实蝇成虫仅在白天有光照情况下进行飞翔活动,气温、相对湿度对该虫活动有显著的影响.气温在20～30℃时,橘小实蝇飞翔活动最活跃,相对湿度大于60％时其飞翔活动最活跃.降水带来的气温与相对湿度的变化对橘小实蝇飞翔活动有显著的影响.     

章古台沙地3种针叶树生长规律对比研究

[目的]研究章古台沙地3种针叶树生长规律。[方法]通过对章古台沙地樟子松(Pinus sylvestris var.mongolica)、油松(Prnus tabulaeformis)、赤松(Prnus densiflora)3种针叶树的解析木进行分析,比较3种针叶树的生长特点。[结果]8~16 a 3种针叶树的胸径和树高生长较快,16 a以后生长逐渐变缓。24 a以后赤松的树高生长比樟子松、油松快,32 a以后胸径生长比樟子松、油松快。樟子松和油松8~24 a时材积连年生长量增长较快,赤松在33~40 a时材积生长明显加快,最高可达0.014 2m3/a。[结论]该研究可为掌握针叶树种在沙地上的生长规律提供科学依据。     

亚洲型舞毒蛾的羽化和生殖行为节律

为了探究亚洲型舞毒蛾(Lymantria dispar asiatica)的羽化和生殖昼夜节律,在自然光周期和温湿度条件下对亚洲型舞毒蛾成虫的羽化、求偶、交配及产卵行为进行了观察,并利用触角电位反应测定了处女雌蛾性信息素的合成量与日龄之间的关系。结果表明:亚洲型舞毒蛾雌蛾在化蛹后11 d,雄蛾在化蛹后12 d分别出现羽化高峰;雌雄蛾的羽化行为均发生在光期前2 h(02:00)至暗期3 h(21:00),雄蛾羽化高峰期为光期6 h(09:00),较雌蛾(11:00)提前2 h。雌蛾羽化约2 h后开始求偶,1日龄雌蛾的求偶率随时间的推移逐渐上升,而其他日龄的雌蛾仅在光周期开始后的1 h内求偶率降至当日最低(75%),其余时间达到或接近100%;2日龄雌蛾体内的性信息素合成量最高,以后逐日下降。成虫羽化当日即可交尾,室内交尾高峰期发生在光期11 h(14:00)左右,次高峰出现在暗期6 h(00:00)。产卵高峰期发生在光期3 h(06:00)左右,次高峰出现在暗期2 h(20:00)。综上可见,亚洲型舞毒蛾成虫的羽化和生殖行为存在明显的昼夜节律。     

The Effect of Angiotensin‐Converting Enzyme Inhibitors of Left Atrial Pressure in Dogs with Mitral Valve Regurgitation

Background: Despite many epidemiological reports concerning the efficacy of angiotensin‐converting enzyme (ACE) inhibitors in dogs with mitral regurgitation (MR), the hemodynamic effects of ACE inhibitor administration have not been fully evaluated. Objectives: To document left atrial pressure (LAP) in dogs with MR administered ACE inhibitors, in order to obtain interesting information about daily LAP changes with administration of ACE inhibitors. Animals: Five healthy Beagle dogs weighing 9.8 to 14.2 kg (2 males and 3 females; aged 2 years). Methods: Experimental, crossover, and interventional study. Chordae tendineae rupture was induced, and a radiotelemetry transmitter catheter was inserted into the left atrium. LAP was recorded for 72 consecutive hours during which each of 3 ACE inhibitors—enalapril (0.5 mg/kg/d), temocapril (0.1 mg/kg/d), and alacepril (3.0 mg/kg/d)—were administered in a crossover study. Results: Averaged diurnal LAP was significantly, but slightly reduced by alacepril (P= .03, 19.03 ± 3.01–18.24 ± 3.07 mmHg). The nightly drops in LAP caused by alacepril and enalapril were significantly higher than the daily drops (P= .03, ?0.98 ± 0.19 to ?0.07 ± 0.25 mmHg, and P= .03, ?0.54 ± 0.21–0.02 ± 0.17 mmHg, respectively), despite the fact that the oral administrations were given in the morning. Systolic blood pressure (122.7 ± 14.4–117.4 ± 13.1 mmHg, P= .04) and systemic vascular resistance (5800 ± 2685–5144 ± 2077 dyne × s/cm⁵, P= .03) were decreased by ACE inhibitors. Conclusions and Clinical Importance: ACE inhibitors decrease LAP minimally, despite reductions in left ventricular afterload. ACE inhibitors should not be used to decrease LAP.     

茶秆竹竹鞭生长规律的研究

茶秆竹竹鞭绝大部分分布在0－30cm土层中。竹鞭生物量与鞭长、鞭径呈正相关。壮芽比例是1龄竹鞭的较少，随着鞭龄加大而增多，然后又迅速减少。笋芽多长在2－3龄竹鞭上。竹鞭划分应以1龄为幼龄鞭，2－3为壮龄鞭，4龄为中龄鞭，4龄以上为老龄鞭。     

论理雅各的《易经》英译

19世纪末英国传教士理雅各的易经英译对中国文化在西方世界的传播和影响起了巨大的作用,他的译本经久不衰,至今仍被西方汉学家视为易经外译的典范。本文对理雅各及其易经英译本进行探讨,旨在发现其翻译的特定思路以及译本的优势与长处,寻找其不足与误译,以利新世纪易经英译的进一步精化与更为广泛的传播。     

Heart Rate Variability in Horses Engaged in Equine-Assisted Activities

Although there has been a recent surge in using horses to treat mental and emotional human health issues, the consequences of horse-assisted interventions on the stress response of horses have not been well documented. Assessment of the autonomic nervous system and its regulation of cardiovascular function has been used as an indicator of acute and chronic stress in human beings and horses. Heart rate variability (HRV) is a noninvasive measurement that has been used to assess autonomic nervous system regulation of cardiovascular function. There is evidence to suggest that several factors including the genotype, behavior, environment, temperament, and nutritional status of the horse play a key role in the large inter-individual variations in basal HRV. The present study determined whether 24-hour HRV recordings in horses currently working in equine-assisted therapy (EAT) differ from those previously shown in Thoroughbred horses. Findings from the present study found that in contrast to previous studies in Thoroughbred horses, diurnal and nocturnal low frequency and high frequency powers were not significantly different in horses that are currently engaged in EAT. Future studies are needed to determine the short- and long-term consequences of horses participating in EAT programs. Findings from this study will provide the basis for the development of a physiological/behavioral assessment criteria to determine the consequences of EAT on the well-being of horses as well as to help EAT Centers to improve the beneficial effects of EAT in human beings.