From Chemical Ecology to Agronomy: Cropping Systems in the Humid Northeast

SUMMARY

Crop production in the northeastern North America poses unique challenges in that soils tend to be cool and wet in the spring, and there is only a brief period each summer when sufficient heat is obtained for the growth of the main crops produced in the area. This paper reviews seven areas of crop production and ecophysiology research in the context of the geo-climatic conditions of the extreme North American humid northeast. The seven areas are: (1) intercropping systems, (2) leafy reduced-stature corn, (3) intensive cereal management, (4) production of C₄ grasses, (5) development of a chronic injection system for physiology research, (6) legume-to-rhizobia signals and inhibition of soybean nodulation, and (7) rhizobia-to-legume signals and crop growth. Progress has been made in each area and there is now a longer-term need to integrate some of these findings at the cropping system level.     

土地集约利用与区域产业转移的相关性研究——以皖江示范区为例

以皖江示范区为例,采用文献资料法、结构方程模型检验区域产业转移与土地集约利用的相关关系。结果表明:皖江示范区区域产业转移与土地利用集约度的相关系数为0.92,区域产业转移对土地利用集约产生较强的正向驱动作用。在未来发展中,皖江示范区应重视区域产业转移在促进土地集约利用方面的积极作用,积极推动产业转移和生产要素自由流动,优化配置区域土地资源,提高土地集约利用水平。     

橄榄油的营养成分及其保健功能

橄榄油是地中海饮食主要的脂肪来源,其营养丰富,具有预防心脑血管疾病、糖尿病、抗肿瘤、防衰老等功能。介绍了橄榄油的分类、理化特性、营养成分及其保健功能。     

PCEA用于剖宫产术后镇痛的效果分析

目的 探讨剖宫产术后芬太尼硬膜外自控镇痛(PCEA)的效果分析.方法 选择2008年6月至12月于张家口第五医院及张家口妇幼保健院进行剖宫产的400例产妇为研究对象,将其随机分为观察组(PCEA组)200例,术毕硬膜外导管连接PCEA芬太尼混合液装置；对照组(杜非合剂镇痛组)200例,术后6h肌肉注射杜非合剂半量.观察...     

肛门疾病术后防治便秘应用效果比较

目的通过护理观察,比较3种方法在肛门疾病术后防治便秘的应用效果.方法收集病例共150例,随机分成3组,每组各50例.分别于术后第1日给予车前番泻颗粒、石蜡油及番泻叶3种缓泻剂.通过对患者的排便时间、不良反应、排便出血及排便疼痛四个方面观察,比较3种药物的应用效果.结果车前番泻颗粒组同其他两组相比具有明显的优越性,具有统计学差异.结论车前番泻颗粒能有效地防治肛门疾病术后的便秘,副作用少,患者所受的痛苦少.     

浅谈室内植物的保健作用

从室内环境、室内植物和人三者之间的关系出发,阐述了室内植物对人体的直接保健作用和间接保健作用,以期对室内空气质量的提高和室内植物的科学配置提供借鉴。     

幼龄黑猩猩的医疗管理训练

幼龄黑猩猩的医疗管理训练是为了培训黑猩猩完成一些配合医疗行为的动作,以口令和响板作为确认信号,以正面奖赏方式进行确认训练,培训幼龄黑猩猩在非麻醉状态下采血、肌肉注射、静脉注射、称量体重、检查牙齿、测量体长、身体的触诊和听诊等医学检查。经过1a的培训,5只幼龄黑猩猩全部自愿完成预期动作。这些训练成果可以确保操作人员和黑猩猩的安全,为黑猩猩疾病诊断与医疗保健提供较大的便利,减少麻醉药、人为捕捉等对动物造成的伤害及应激,在临床应用上取得了良好的效果。     

超高密度油橄榄园——世界油橄榄集约栽培模式

综述近年来世界油橄榄集约化栽培模式的发展，详述超高密度油橄榄园的栽培密度、品种选择、经营管理措施、采收方法、经济效益以及应用中存在的问题，为我国油橄榄产业的研究和开发提供借鉴和参考。     

Evaluation of a local anesthetic delivery system for the postoperative analgesic management of canine total ear canal ablation--a randomized, controlled, double-blinded study

OBJECTIVE: To determine if a constant rate local anesthetic delivery system is more effective than continuous intravenous (IV) morphine infusion for postoperative analgesia. ANIMALS: Twenty client-owned dogs undergoing total ear canal ablation. METHODS: Dogs were randomly assigned to the lidocaine group (LID) or the morphine group (MOR). The LID group received a constant rate infusion of lidocaine locally and a continuous IV infusion of saline, while the MOR group received a constant rate infusion of saline locally and a continuous IV infusion of morphine. The primary investigator evaluated each patient and determined a hospital behavior score, anesthesia recovery score, preoperative pain score, and serial postoperative pain and sedation scores over 38 hours. Pain and sedation observations were videotaped and scored by three additional evaluators. Evaluators were blinded to treatment assignments. RESULTS: There were no significant differences in age, weight, hospital behavior scores or anesthesia recovery scores. The primary investigator's pain scores were not significantly different, but sedation scores were significantly lower for the LID group. Sedation and pain scores by the video evaluators were not significantly different between groups. Kappa agreement between observers was poor, but better agreement was noted between sedation scores than pain scores. Drug-related complications were significantly lower in the LID group (n = 0) compared with the MOR group (n = 5). Wound complications were not significantly different (LID = 4, MOR = 4). Intravenous delivery complications occurred in 12 (60%) patients. Local delivery complications occurred in five (25%) dogs. Delivery complications were not significantly different between groups. CONCLUSIONS AND CLINICAL RELEVANCE: Continuous incisional lidocaine delivery was an equipotent and viable method of providing postoperative analgesia compared with IV morphine. Lidocaine delivery resulted in a trend toward lower pain scores, significantly lower sedation scores, and no dogs requiring analgesic rescue. Wound complications secondary to local infusion were minor and self-limiting. Drug-related complications occurred only in the MOR group.     

中国城市土地集约利用与生态环境协调发展评价研究

在构建城市土地集约利用与生态环境协调发展评价模型的基础上,分析了1995年以来中国城市土地集约利用与生态环境协调发展程度的时空分布。研究结果表明:(1)从时间上看,协调度等级由初级协调转为良好协调,但协调度近年来呈现下降趋势,协调发展度整体上逐年增加;(2)从空间上看,中国省区协调度与协调发展度都存在着明显的区域差异,且协调发展水平整体上表现出东部地区大部分省份高于中西部地区的规律,而且与区域经济发展水平具有较强的相关关系;(3)按照协调度和协调发展度将31个省区分为7类,分别体现经济发展、自然条件和政策因素等差异。应在提高城市土地集约利用水平的同时,不断加强生态环境保护建设;开展城市生态规划,建立环境友好型土地利用模式,有效促进城市土地集约利用与生态环境协调发展。