畜牧业碳减排市场化工具应用发展述评

畜牧业碳排放在农业碳排放中占有重要位置。对当前畜牧业碳减排的市场化工具应用及研究进展进行综述。介绍了碳税、碳市场交易等畜牧业碳减排市场化工具的研究现状以及应用可行性和存在的困难,总结了畜牧业碳减排市场化工具的应用实践和经验,以期为畜牧业碳减排参与碳市场交易提供参考。     

Molecular expression and identification of caprine estrogen receptor gene 1 for fertility status in bucks

Estrogen and its receptors are essential for sexual development and reproduction. Oestrogen receptor alpha (ERα) is a nuclear receptor activated by the hormone oestrogen. In male, ERα is encoded by the gene ESR1 (oestrogen receptor1) responsible for better fertility. ESR1 is involved in the reabsorption of luminal fluid during the transit of spermatozoa from the testis to the head of the epididymis which is important for their survival and maturation during epididymal storage. The absence of ESR1 leads to reduced epididymal sperm content, reduced sperm motility and fertilizing ability. The present study was undertaken to investigate the expression and presence of ESR1 gene in fertile and low-fertile male goat breeds. We identified ESR1 gene through various molecular tools. Genotyping was carried out by high resonance melting analysis using Roche Light Cycler 480(LC-480) system and found three different genotypes. Genotypic frequency-AA (blue-0.67), BB(Red-0.2), AB(Green-0.08) with allele frequency A(0.71 and B (0.29). The predominance of this gene in head of epididymis in fertile bucks was confirmed by SDS-PAGE, Western blotting and immunohistochemistry. From the results, we corroborated that the present study provides a useful and effective way to predict male fertility in goat breeds, which in turn increases the percentage of fertility in flock leading to more number of offspring in a kidding season.     

数控机床误差检测与补偿技术

文章介绍当前数控机床误差的各种典型检测与补偿方法和技术特点,分析目前数控机床误差检测与补偿技术研究中存在的问题,重点分析数控机床的误差动态综合补偿技术的不足和难点,提出一些解决方法和策略,并对今后的研究思路和市场应用做了进一步规划与展望。     

农业科学信息资源检索工具研究

为农业科学研究人员提供了几种农业科学信息资源的检索工具：检索刊物、科技报告、国内出版和国外出版的检索工具．具有很高的实用价值。     

PDCA循环对优化饲料企业供应链的研究探讨

我国饲料产量保持高度增长,已连续九年稳居世界第一,饲料企业也从无到有、从弱到强并以供应链的形式逐渐发展起来.近年来,饲料企业供应链在组织管理、信息共享、物流成本等方面依然存在问题,在一定程度上影响饲料企业供应链的整体绩效.PDCA循环是一种具有普遍适用性、反复优化和持续改进特点的质量管理方法,本研究尝试将PDCA循环原...     

Community‐based monitoring of small‐scale fisheries with digital devices in Brazilian Amazon

Fisheries management is potentially a short‐term measure for reducing floodplain fisheries degradation. This objective can only be achieved if adequate measures to improve fishery governance and ecosystem conservation are taken. The monitoring of fisheries management is likely to be important for understanding the effectiveness of local rules and the impacts on aquatic biodiversity. Given that monitoring is the periodic assessment of fish stock characteristics regarding reference data, adopting tools and procedures for monitoring at different scales is a challenging task. Information and Communication Technologies (ICT) have enabled local communities to gather data on key resources in a cost‐effective way. This article presents a community‐based monitoring of fisheries based of smartphones that supports the annual fishing quotas and legal harvest permits procedures. The precision of community‐based monitoring data is assessed and a model to integrate these data into a large‐scale monitoring scheme examined. Data collection performance was evaluated at communities in the Kaxinawá Nova Olinda Indigenous Territory, in the State of Acre, where fishery management was monitored. The results indicate that voluntary collectors are able to provide data with precision comparable with government agency measurements, but at lower cost.     

山地步行式拖拉机及造林机具的研究

介绍了国内外山地步行式拖拉机的发展水平、主要技术内容及参数。山地步行式拖拉机的推广应用将取得良好的经济效益及社会生态效益。     

Utilizing technology to enhance laboratory–client interaction while encouraging best behavior

As client interactions with veterinary diagnostic laboratories have evolved, so have client expectations: faster results, enhanced accessibility to cases, and more seamless data transfer from the laboratory database; all of these factors have encouraged the evolution of diagnostic laboratory systems. This evolution started with 24-h access to laboratory results via the web, yet data quality remained at the mercy of the person filling out the form. If bad (incomplete) information was flowing in, then the data coming out was equally bad (incomplete or inconsistent). By designing a web-based system integrated into our existing reporting platform, the Iowa State University Veterinary Diagnostic Laboratory (ISU-VDL) set out to improve the quality of submission data by including the premises identification number (PIN) and obtaining consistent location data, all while presenting to the client an easy-to-use interface. Efforts continued by incentivizing the use of this tool and client submission practices. As clients transitioned, data have become more complete, resulting in easier queries and an improved ability to leverage the diagnostic data. To further enhance the client experience, a streamlined daily reporting summary was designed to communicate laboratory results succinctly. The use of these web-based tools had a positive impact on the quality and consistency of the diagnostic data. As new ideas develop, the ISU-VDL strives to foster continuous improvement and positively impact the clients’ experience.     

基于Geodatabase与CASE工具的林地保护利用规划数据库设计

林地保护利用规划数据具有多源、海量的特点。针对Geodatabase手动建模费时的特点,利用Geodatabase与CASE工具（Visio）进行UML建型,建立林地保护利用规划数据库模型。该模型实现了林地保护利用规划空间与属性数据的一体化存储,缩短了开发周期。