惠州市东湖花园植物资源调查与应用现状分析

广东省惠州市东湖花园的植物资源调查结果表明：该小区的植物种类可分为55科102种, 其中蕨类植物3科3种，裸子植物5科5种，被子植物47科94种，被子植物中双子叶植物36科61种，单子叶植物11科33种；分析其植物配置现状,并就其今后园林规划中植物的配置提出建议。     

我校学生阅读状况调查与分析

一个学生综合素质的提高,仅局限于课本知识的学习是远远不够的。因此,要想提高学生的素养、拓展知识面,就应该了解其在课外阅读方面的基本情况,课外阅读的方法,从而提出合理化建议,有针对性的给予指导和帮助,使学生对课外阅读产生兴趣,养成课外阅读的习惯,从中获取知识,受到熏陶。     

问卷调查折射出的辽宁渔业竞争力问题研究

针对目前辽宁渔业所面临的竞争环境，借助国际竞争理论设计出含有宏观因素、水产部门产业环境及基础设施、渔业生产管理体制和渔业有关人员力量四大系统的竞争力评价模型并进行了广域问卷调查。结果表明，近年来，辽宁渔业竞争力在很多领域有了一定的提高和增强。但是，在政策制度、管理体制和支撑体系等方面还折射出不少问题，制约着整个渔业竞争力的提升。基于此，提出了建立健全渔业保险制度和渔业贷款制度、提升渔业劳动者技术水平、加强养殖业者自律性、进一步制定渔用柴油油价上涨对策等一系列政策建议。     

滁州职业技术学院园林树木种类调查与分析

通过对滁州职业技术学院校园绿化树木调查整理，确定该学院校园园林树木种类约有35科、55属、74种。校园总体绿化效果较好，但植物的配置和设计还不尽合理，需进一步兼顾常绿树与落叶树、乔木与灌木等的搭配，营造多树种的合理、美观的校园。     

以鄠邑区为例的基数转换要点研究

随着各级国土空间总体规划工作的推进,明确各地现状数据的工作日渐紧迫。以三调为基础的现状数据不能满足和符合国土空间总体规划的工作要求,所以在三调基础上科学准确的衔接规划编制所需的空间关联信息和现状数据,形成科学、准确的现状底图是保证空间规划编制科学有效的基础。因三调数据与其他关联数据在坐标、分类等方面存在差异,因此需要对其进行分类转换。本文在梳理三调工作分类和规划用途分类对应关系的基础上,以鄠邑区为例,对具体实践中遇到的主要问题提出相关建议。     

不同生态环境下散养鸡寄生虫区系调查

对榆林市不同生态环境下散养鸡的寄生虫进行比较详细的调查.发现鸡寄生虫14种,隶属8科10属,其中外寄生虫6种,分别属于3科5属,鸡内寄生虫8种,分别属于5科5属,其中线虫5种,绦虫3种,吸虫1种.分析了各类虫种的感染率、感染强度及优势虫种,并对不同生态环境下的鸡寄生虫感染情况进行了分析对比;在调查寄生虫感染原因的基础上,提出了防制措施.     

Final Analysis of the Accuracy and Precision of Methods to Calculate the Sediment Retained by Check Dams

Knowing how much sediment check dams have trapped during their lifespan is essential to estimate their effectiveness or the sediment yields of their basins. Methods to calculate the volume of sediment trapped by check dams play an important role in the understanding of these issues. Several authors have proposed different methods to measure the volume of retained sediment, but their accuracy has, as yet, not been precisely determined and is currently a subject of debate. We compare the most frequently used methods (geometric: prism, pyramid and geometric; topographic: Digital Terrain Models (DTMs), trapezoids and sections methods) to evaluate their accuracy and precision in determining the volume of sediment retained by check dams. Our calculations are based on ten virtual check dams simulated in several gullies of Saldaña (Spain), where we determine their volumetric capacity for trapping sediment (real volume). This was made by means of an intensive topographic survey of these gullies, employing a terrestrial laser scanning system to obtain a high‐resolution digital elevation model (5 × 5 cm, ±2 mm). The results showed that topographic methods provided a very good fit to real volume with a difference of around 8%, being the sections method the most accurate. Geometric methods were less accurate, showing differences of up to 28%. Thus, the results obtained until now by geometric methods should be considered with caution. Although topographic methods were more accurate, they require many field data and much time than the others. So geometric methods can still be useful by correcting their results using our obtained percentage of variation. Knowing the accuracy of the methods before measuring is essential to obtain the most reliable results to analyse the role of check dams in controlling sediment, erosion processes and land degradation. Copyright © 2017 John Wiley & Sons, Ltd.     

A case-control study to identify farm factors affecting fertility of dairy herds: univariate description of factors

Objective To identify farm factors which were associated with reproductive performance in dairy herds in New South Wales.
Procedure A survey was administered by face to face interview to examine the responses of producers drawn from 757 herds, which used the New South Wales Agriculture Department Dairy Herd Improvement scheme. A case-control approach was used to select a total of 126 herds from the first (top group - cases) and fourth quartiles (low group - controls) for intercalving interval.
Results We found that the estimated interval from calving to first mating was significantly different between groups (P = 0.03) and that the groups significantly differed in both their target for interval to first mating (P = 0.02) and their perceived optimum time for first mating (P = 0.04). Other factors associated with a longer intercalving interval included, use of embryo transfer programs (P = 0.08), younger managers (P = 0.02), fewer breedings per day (P = 0.01), a greater number of people detecting heats (P = 0.07), but less hours spent detecting heats while handling the cows (P = 0.11), and a failure to vaccinate bulls for campylobacteriosis (P = 0.14).
Conclusions Managers of herds with poorer reproductive performance did not intend to mate cattle as soon after calving as managers with better reproductive performance, were not as active in seeking veterinary advice on reproduction, and were attempting to treat reproductive diseases and disorders themselves.     

武陵山区秀山县稻飞虱发生的演变

通过对秀山县稻飞虱30多年来历史资料的分析，从发生期、发生量、发生程度等方面探讨稻飞虱发生的演变规律。     

长北气田C1井组GPS施工测量技术研究

本文详细介绍了长北气田C1井组GPS施工控制网和井位测量的技术方案及施测情况,测量成果均满足测量规范要求,为钻井生产提供了可靠的井位数据,对其他油气施工工程有重要的借鉴作用。