Results 11 to 20 of about 2,439 (89)
Effects of season length and uniparental care efficacy on the evolution of parental care
Journal of Animal Ecology, Volume 92, Issue 9, Page 1719-1729, September 2023., 2023 This theoretical study shows that individual (within‐sex) variation of parental care strategies readily evolves, leading to the coexistence of different care patterns in the same population. Depending on season length and uniparental care efficacy, alternative equilibria often exist, explaining variation across populations and the evolutionary lability
Jia Zheng +2 more
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Methods in Ecology and Evolution, Volume 17, Issue 6, Page 1896-1909, June 2026.Abstract Molecular identification of insect food webs can accurately reveal complex trophic interactions and serve as a foundation for understanding ecosystem functioning and advancing biodiversity conservation. This process typically involves DNA library construction, high‐throughput sequencing and subsequent steps, including data assembly, annotation,
Xiao‐man Zhang +9 more
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International Journal of Urban and Regional Research, Volume 50, Issue 1, Page 191-220, January 2026.Abstract Henry George advocated for capturing land value increases for public ends. The active approach of public authorities organizing and financing land development can help capture higher land value increases, as Hartman and Spit indicate. However, this approach hardly happens in developing countries, where the coalition of private developers and ...
Nannan Xu
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Integrative Conservation, Volume 4, Issue 3, Page 464-475, September 2025.This study investigates the diversity, conservation status, distribution, and discovery rate of 84 Cyrtodactylus species in Indochina. Despite rising discovery rates, many species are unassessed, with over half unprotected and 90.5% endemic. This study suggests expanding protected areas and implementing an integrated approach to conservation with IUCN ...
Matilda Julia Lasota +6 more
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Gongye shui chuli, 2021 相比传统脱氮工艺，厌氧氨氧化（Anammox）以其低耗、高效和环境友好备受青睐，具有广阔的发展前景。基质NO2--N难获取，厌氧氨氧化菌（AAOB）生长缓慢且对环境敏感使反应器难启动和不完全脱氮限制因素阻碍了Anammox的工程应用。针对Anammox脱氮应用的限制因素，分析了短程硝化（PN）和短程反硝化（PD）途径获取NO2--N的调控，解析了反应器快速启动的环境因素、常用的反应器和高活性污泥，并介绍了PN+Anammox，PN+Anammox+反硝化（SNAD）和PD ...
蒙小俊, 郭楠楠, 黄志贵
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Gongye shui chuli, 2016 采用添加多层多孔板的升流式厌氧污泥床接种混合污泥,于78 d内成功启动厌氧氨氧化反应器。第75天,反应器对NH4+-N和NO2--N的去除率达95%以上,容积氮去除负荷达0.525 kg/(m3·d)。启动后,快速提高进水基质浓度,反应器出现抑制现象,且抑制前后三氮之比具有显著变化。运行后期,底部出现红棕色污泥。与普通的升流式厌氧污泥床相比,其具有喷动床效应及水利筛分作用,有利于颗粒污泥的形成。
朱清江 +5 more
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水稻RSSG8基因启动子与GUS融合基因的构建及在烟草中的瞬间表达
四川大学学报. 自然科学版, 2004 使用染色体步移(Genomewalking)法,从籼稻(Oryzasativasubsp indica)桂朝2号基因组中克隆到长度为471bp的水稻精细胞优势表达基因RSSG8的启动子片段R8PN,并进行了全序列测定和分析 该段序列中含有3个CAAT box,6个G box和多种植物顺式作用元件,但没有发现典型的TATA box,推测为一种特殊的启动子结构.为了鉴定RSSG8基因的基本启动子元件,将二条长度不同的5'端侧翼区缺失体(分别长471bp,260bp)定向插入载体pBI121中 ...
龚举成 +6 more
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Gongye shui chuli, 2018 限时曝气条件下，采用SBR反应器处理模拟氨氮废水，通过pH控制实现了SBR系统快速亚硝化启动，并对不同pH下氨氧化过程进行了研究，考察了pH对氨氧化过程中DO变化规律、游离氨及氨氧化速率的影响。结果表明，在pH为7.59~8.12时，可实现氨氧化菌和亚硝态氮快速富集和积累，亚硝态氮积累率可达95%以上；通过pH调节可控制进水游离氨（FA）浓度及氨氧化过程中DO需求，进而影响选择性亚硝化过程。
钱光磊 +5 more
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Gaoya dianqi, 2016 直流断路器的启动判据直接影响断路器的动作性能。分析了直流系统故障行波的特点,提出一种基于小波分解的直流断路器启动判据。首先利用小波变换对直流系统故障时电压行波进行多尺度分解,通过比较分解后的高尺度的模极大值的变化情况,判断直流系统的故障,再利用电流行波模极大值的正负性区分直流系统的区内、区外故障,并与电压行波模极大值判据共同组成直流断路器的启动判据。最后利用MATLAB与PSCAD对启动判据进行了仿真验证,仿真结果表明,该启动判据原理简单,容易实现,并且具有较高的可靠性高与快速性。
邓超平 +6 more
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Gongye shui chuli, 2022 研究了采用EGSB反应器处理稀释垃圾焚烧厂渗滤液的快速启动与运行过程，并对初期与末期厌氧颗粒污泥的物化特征进行对比分析。研究结果表明，在接种颗粒污泥的情况下EGSB反应器22 d完成快速启动；反应器经过180 d的运行，在COD容积负荷为15 kg/（m3·d）、回流比为800%、HRT为8 h、反应器内部温度为30~35 ℃的条件下，对渗滤液COD的去除率达到90%以上，色度去除率为75%左右，此外，日产气量达到150 L左右，与理论计算值（72~150 L/d）基本一致，反应器运行状态良好 ...
官桐乐, 贺超, 刘永红, 王宁
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