福建省林木良种繁育概况及今后工作设想     

邱进清 《福建林业科技》1996,(Z1)

本文介绍了福建省林木种质资源的收集保存、研究利用，优良家系选育，树种内种源研究，高世代种子园研究，乡土树种栽培驯化，外来树种引种，提高种子园种子产量所采取的措施，无性繁殖技术等林木良种繁育概况；并就林木育种工作存在的问题及今后工作设想提出建设性意见。  相似文献   

通用开放式绘图仪接口软件设计与实现     

王跃  王东 《湖南农业大学学报(自然科学版)》1993,20(3)

本文针对TANGO软件所支持的图形输出设备中不包括CALCOMP系列绘图仪的问题,设计了TANGO图形文件与CALCOMP系列绘图的接口软件.由此阐述了一种通用图形描述语言及开放式绘图仪接口软件的设计思想与技术实现.  相似文献   

The effects of multiple anaesthetic episodes on equine recovery quality          下载免费PDF全文

J. P. Platt  B. T. Simon  M. Coleman  E. A. Martinez  M. A. Lepiz  A. E. Watts 《Equine veterinary journal》2018,50(1):111-116

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Distribution,characteristics and condition of Arctic charr (Salvelinus alpinus) spawning grounds in a differentially eutrophicated twin‐basin lake          下载免费PDF全文

Helen Miller  Ian J. Winfield  Janice M. Fletcher  J. Ben James  Joey van Rijn  Jonathan M. Bull  Carol J. Cotterill 《Ecology of Freshwater Fish》2015,24(1):32-43

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Lactation-related mammary gland pathologies—A neglected emergency in the bitch     

Iosif Vasiu  Roman Dąbrowski  Asta Tvarijonaviciute 《Reproduction in domestic animals》2021,56(2):208-230

Mastitis is a common reproductive disorder in bitches, reaching a prevalence of 0.71%. Mastitis has a wide range of forms, from asymptomatic to severe gangrenous mastitis that can lead to septic shock and death of the bitch and nurslings. However, most of the time it is overlooked, undiagnosed or mistreated. The present systematic review was performed to revise and summarize the existing knowledge related to this disorder, including diagnosis, treatment and prevention.  相似文献   

规划衔接与建设用地空间管制协调研究     

阿丽亚·阿布力孜  张永福 《安徽农业科学》2013,41(5):2279-2282

在前人研究的基础上,总结了上一轮土地利用规划实施过程中存在的问题,研究规划衔接的重要性和必要性。从剖析比较各类规划,特别是土地利用总体规划和城乡规划的内容和侧重点差异性的基础上,提出规划衔接的可行性及方法,探讨了规划衔接与建设用地空间管制的主要内容及协调对策,提出了对相关研究和新一轮规划编制的建议。  相似文献   

基于总分馆制的县—乡（村）图书馆服务网络构建     

王海燕  高春雨 《农业图书情报学刊》2010,22(12):378-380

介绍了当前我国基层公共图书馆的发展状况,提出了构建基于总分馆制的县—乡（村）图书馆服务网络的构思,并对构建服务网络中的一些问题给出自己的思考。  相似文献   

Avian anaesthesia related mortality and the associated risk factors in a UK zoological collection     

《Veterinary anaesthesia and analgesia》2021,48(6):922-929

ObjectiveTo analyse avian anaesthesia-related mortality in a UK zoological collection over a 5-year period and identify risk factors for mortality.Study designRetrospective cohort study.AnimalsA total of 135 individual birds across 37 species, anaesthetized during 206 events in a UK zoological collection between 1 January 2014 and 30 June 2019 (inclusive).MethodsAnaesthesia records were reviewed and variables such as age, body condition, weight, sex, duration of anaesthesia and health status were collated. Anaesthesia-related mortality was defined as those deaths occurring during anaesthesia and up to 7 days postanaesthesia. Outcome was analysed using multivariable conditional logistic regression. Overall mortality was defined and included birds euthanised during anaesthesia for non-anaesthesia related reasons. Data were summarised as median (range). A value of p < 0.05 was considered significant. Relative risks and 95% confidence intervals (95% CI) were calculated for the association between risk factors and anaesthetic death where a statistically significant difference was found.ResultsThe overall mortality rate was 10.19% (95% CI = 6.06–14.3%), while anaesthesia-related mortality was 3.88% (95% CI = 1.69–7.51%). Birds with an abnormal health status had a 15.53-fold (95% CI = 1.95–123.63) increased risk of death compared with those with a normal health status. The duration of anaesthesia was also a statistically significant risk factor (p = 0.021) in the univariable analysis, but not when combined with health status. No other variables were associated with anaesthesia-related mortality.Conclusions and clinical relevanceAbnormal health status and longer anaesthetic procedures were associated with a significantly increased risk of anaesthesia-related death in this population of birds. It is recommended that anaesthetic duration is minimized, and pre-existing diseases are diagnosed where possible prior to general anaesthesia of birds. Anaesthetizing healthy birds was associated with a low risk of mortality.  相似文献   

基于层次分析法的辽河干流水环境承载力评价研究     

孙亚飞  何俊仕  王捷  靳晓辉  冯德财 《节水灌溉》2015,(5)

目前,水生态文明建设提出后,水环境承载力成为衡量地区可持续发展能力的一项重要指标。为了解辽河干流沿岸城市的水环境承载状况,以辽河干流为研究区域,采用层次分析法,建立以水资源、社会、经济、生态环境为子系统的评价体系。代入各行政分区的样本值,进行辽河干流水环境综合承载能力计算。评价了各行政分区不同现状年的承载状况。  相似文献   

艺术设计中“图”与“底”的关系     

庞培蓓 《信阳农业高等专科学校学报》2007,17(2):153-154

人们关注的中心为“图”,背景的部分为“底”,“图形”与“基底”的关系指一个封闭的式样与另一个和它同质的非封闭的背景之间的关系。图底关系理论在城市建筑设计中大有可为。  相似文献