Results 31 to 40 of about 10,357 (168)
The Relationship of Environmental Factors with Community Structures and Diversities of Microorganisms in Activated Sludge from Wastewater Treatment Plants [PDF]
, 2013 随着我国社会经济的飞速发展和城镇化进程的加快，大量肆意排放的废水造成水体严重污染，导致“水危机”日趋严重。废水在排入水体前，应首先由污水处理厂进行处理。较之于增加污水处理厂数量需要耗费大量资金成本，提高现有污水处理设施的废水处理效率至关重要。活性污泥法是污水处理厂应用最广泛的废水处理方式之一。由于在活性污泥系统中，微生物是去除污染物的主体。因此，深入了解活性污泥中微生物的群落结构与功能，理解其时空分布格局及受控机理，对于深化认识污水处理系统的本质，进而提高污水处理效率具有重要意义。此外 ...
杨晓永
core
Bacterial diversity analysis of Xiangpai brined beef based on high-throughput sequencing [PDF]
, 2023 Objective: This study aimed to preserve the flavor of Xiangpai brined beef and prolong its shelf life. Methods: High-throughput sequencing was performed in Xiangpai brined beef samples with different storage time (0, 4, 8, 12, 16 d).
CHE Li-na +2 more
core +1 more source
Conservation Biology, Volume 39, Issue 6, December 2025.Abstract As the coverage of area‐based conservation increases across the globe, it is critical to improve understanding of the social and ecological outcomes of such measures and the pathways to their outcomes. A social–ecological systems approach to monitoring and evaluation is increasingly advocated; yet, applications remain scarce.
Natalie C. Ban +21 more
wiley +1 more source
The cloning, functional Analysis and identification of SNPs associated with growth traits of three digestive enzymes in Haliotis diversicolor [PDF]
, 2016 杂色鲍（Haliotisdiversicolor）是我国南方的养殖鲍种，具有重要的经济价值。研究与杂色鲍生长相关的基因及其表达规律，并筛查与生长性状相关联的SNP位点，对于深入了解生长性状调控的分子机制，培育具有优良性状的新品种具有重要意义。鲍鱼是植食性软体动物，以海藻为主要的食物和能量来源，而鲍鱼消化液中比较突出的多糖降解酶是褐藻胶裂解酶、纤维素酶、甘露聚糖酶β-1，3-葡聚糖酶和淀粉酶。因此本研究将褐藻胶裂解酶、纤维素酶和淀粉酶的三个基因作为杂色鲍生长性状相关的候选基因，通过基因克隆、饵料对酶活影响、
曹怀峰
core
Process of Forensic Medicine in DNA Identification of Aged Human Remains [PDF]
, 2023 Skeleton and teeth are important biological samples. Due to their special structure and strong ability to resist degradation, they are ideal biological materials to retain DNA under natural condition.
Lu CHEN, Zhe ZHOU, Sheng-qi WANG
core +1 more source
Ecology and Evolution, Volume 15, Issue 10, October 2025.This paper proposes a ‘relaxed’ point‐count survey method to enhance accessibility and expand geographic coverage by easing these constraints. Surveys can be conducted in diverse locations, including urban areas and travel routes, within flexible timeframes (e.g., 6 h after sunrise or during the evening) and with adaptable spacing between survey points,
Masumi Hisano
wiley +1 more source
Jixie chuandong, 2015 针对现有测量方法存在的问题,基于测量状态与加工状态一致的检测原理,设计了环面蜗杆精度测量原理。通过设置自动标定程序和高精密时栅转台使系统自动建立三维空间的测量坐标系,并利用坐标旋转法测得测头的回转半径。采用随动控制方式来测量环面蜗杆各齿面的点在测量坐标系中的坐标值,从而得到环面蜗杆的精度。系统采用金字塔式的结构使系统更稳定、可靠性强。通过实验,验证了本方案的可行性,测得环面蜗杆螺旋线的误差为±4μm。对系统进行等精度重复性实验,系统的极差为0.9μm,方差分析说明各测量点的误差值无显著差异。
陈锡侯 +3 more
doaj +1 more source
野生动物学报, 2018 随着近年来高通量测序技术的发展,其在生物学研究领域的应用也越来越广泛,并逐渐成为生物学研究的重要方法和工具。基于高通量测序的 RNA-seq技术为揭示野生动物转录组信息提供了更为准确、便捷的方法。本文论述了RNA-seq技术的发展历史和技术特点,并结合野生动物转录组研究中所面临的问题探讨了RNA-seq技术的具体应用和发展方向,以期为野生动物的研究提供方法指导。
肖 慧 吴 尽 赵敏蝶 丁 新 刘学东
doaj
Toxicity of BaP exposure during embryonic stage in zebrafish: the mechanisms involved [PDF]
, 2016 多环芳烃（PolycyclicAromaticHydrocarbon，PAH）是环境中一类分布广泛的持久性有机污染物。苯并（a）芘（Benzo(a)pyrene，BaP）作为代表性的PAH具有包括神经毒性和生殖毒性在内的多种毒性。截至目前，关于BaP神经毒性的研究大多集中于高浓度或短期的暴露实验，而环境水平浓度下、长期的BaP暴露是否能引起同样的神经毒性则研究得较少；此外，胚胎时期低浓度BaP暴露对成年阶段的神经毒性、生殖毒性效应及其机制研究更为少见。因此本研究以斑马鱼为模式动物，分别进行环境水平浓度 ...
高东旭
core
Research Progress of Functional Enzymes inTraditional Fermented Food [PDF]
, 2023 Traditional fermented foods could produce a variety of functional enzymes and plenty of flavor compounds through microbial fermentation. The production process of fermented foods would be constantly enriched with abundant enzymes, and it is the current ...
Hai ZHAO +4 more
core +1 more source