Results 21 to 30 of about 5,621 (166)

高羊茅和黑麦草对污染土壤Cd,Pb,Zn的富集特征

open access: yesShuitu Baochi Xuebao, 2008
以潮褐土为供试土壤,通过模拟试验研究了高羊茅(Festuca arundinacea)和黑麦草(Lolium multif lorum)对复合污染土壤Cd,Pb,Zn的富集特点。结果表明,在土壤Cd,Pb,Zn复合污染处理条件下,高羊茅Cd,Pb,Zn的平均富集量,地上部分别为5.76,19.77,418.18 mg/kg,地下部分别为129.82,256.66,354.66 mg/kg;黑麦草Cd,Pb,Zn的平均富集量,地上部分别为5.57,26.13,467.18 mg/kg,地下部分别为114 ...
杨卓   +4 more
doaj  

Sequencing and correlation analysis of miRNAome and transcriptome of Larimichthys crocea infected by Cryptocaryon irritans [PDF]

open access: yes, 2016
大黄鱼(LarimichthyscroceaRichardson,1846)曾是我国的传统四大海洋渔业对象之一,也是我国目前最主要的海水网箱养殖经济鱼类之一,2015年养殖年产量超过14万吨。近年来由于发展模式的制约,养殖管理的缺失,加之养殖环境的严重污染,大黄鱼养殖过程中的各种病毒性疾病,细菌疾病和寄生虫疾病日趋严重,其中以刺激隐核虫(Cryptocaryonirritans)病的危害最为严重。其所感染大黄鱼并导致继发性的细菌感染,造成养殖大黄鱼大面积死亡,对该养殖产业损失极大 ...
乔莹
core  

Return of the Swamp Rabbit: Sylvilagus aquaticus Occupancy Increased and Expanded Along the Northern Extent of Its Distribution Range 沼泽兔的回归:沼泽兔 (Sylvilagus aquaticus) 在其分布范围北缘的分布率上升并向外扩张

open access: yesWildlife Letters, Volume 3, Issue 4, Page 161-172, December 2025.
Swamp rabbit (Sulvilagus aquaticus) in southeast Missouri is increasing and expanding, with occupancy probabilities of 0.66 in 2010–2012 and 0.79 in 2021–2022. ABSTRACT Swamp rabbits (Sylvilagus aquaticus) are a bottomland hardwood specialist that have experienced range contraction at the northern and western extents of their range.
Thanchira Suriyamongkol   +6 more
wiley   +1 more source

空肠弯曲杆菌诱导的结直肠癌的转录组学分析

open access: yesZhongshan Daxue xuebao. Yixue kexue ban, 2022
目的探究空肠弯曲杆菌(C. jejuni)的致癌机制。方法将18只雌性的C57BL/6 ApcMin/+小鼠随机分为C. jejuni感染组9只和空白对照组9只。采用灌胃C. jejuni和葡聚糖硫酸盐共同诱导ApcMin/+小鼠产生结直肠癌。实验终点时,取各组小鼠结直肠组织解剖计数肿瘤个数,分别提取C.
李燕, 毛玉丹, 张幸鼎, 牟相宇
doaj  

Studies on Biology of Early Developmental Stages of Babylonia [PDF]

open access: yes, 2016
东风螺(Babylonia)隶属软体动物门(Mollusca)、腹足纲(Gastropoda)、新腹足目(Neogastropoda)、东风螺科(Babyloniidae),分布于中国东海、南海以及东南亚、日本和印度洋沿岸,因肉质鲜美、市场接受度高,而且生长速度快、养殖产量大,被认为是本世纪最具开发前景的优质海产腹足类之一。方斑东风螺和泥东风螺是我国常见的东风螺种类,对于其早期发育阶段的形态学以及多种组学进行研究,不仅在理论研究上具有科学意义,而且在生产实践上也具有重要的指导意义 ...
沈铭辉
core   +1 more source

Role of forest edges and other seminatural linear landscape features in structuring wild bee habitat connectivity in intensively managed landscapes

open access: yesConservation Biology, Volume 39, Issue 6, December 2025.
Abstract Pollinator conservation schemes typically focus on conserving existing, restoring degraded, or creating new wild bee habitats. Their effectiveness depends on dispersal corridors enabling habitat colonization by bees. However, the role of seminatural linear landscape structures (LLS) in connecting pollinator communities across intensively ...
Markus A. K. Sydenham   +6 more
wiley   +1 more source

土壤及泥沙颗粒组成与养分流失的研究

open access: yesShuitu Baochi Xuebao, 2007
利用自然降雨影响下的农田为试验样地,分析了降雨前后土壤颗粒组成与养分含量的变化,探讨了流失泥沙颗粒组成与养分的变化特征。结果表明,在降雨后,西瓜地与油菜地表土颗粒组成呈现粘粒与粉粒含量减少,砂粒含量相对增加的趋势;土壤养分含量都有不同程度的下降,其中水解氮与速效磷下降的幅度很大,西瓜地与油菜地水解氮降雨后降幅分别为9.67%和7.99%,速效磷的降幅分别为9.20%和8.76%;全氮养分降幅很小,西瓜地与油菜地分别为2.17%和1.54%;流失泥沙细小颗粒含量与养分含量随时间基本都呈降低的变化趋势 ...
胡宏祥, 洪天求, 马友华, 刘坤
doaj   +2 more sources

Mechanistic study on mercury or cadmium toxicity in marine copepod Tigriopus japonicus under multigenerational exposure [PDF]

open access: yes, 2016
如今,海洋重金属污染已是最严峻的环境问题之一,会对海洋生态系统乃至人类造成巨大的危害,其中汞和镉是最有代表性的重金属,两者即使在低剂量下也会对海洋生物产生较高的毒性效应,而且会在生物体内累积并在食物链传递过程中有生物放大现象,最终威胁人类健康和生命安全。海洋桡足类日本虎斑猛水蚤(Tigriopusjaponicus),因其广泛的地理分布、相对短的世代周期、高的繁殖力、易于区分的雌雄形态及在海洋环境中重要的生态位等,已成为海洋生态毒理学研究的重要模式生物。因此本论文选取日本虎斑猛水蚤作为受试生物 ...
石琳
core  

The Future of AI in the GCC Post‐NPM Landscape: A Comparative Analysis of Kuwait and the UAE

open access: yesPolitics &Policy, Volume 53, Issue 6, December 2025.
ABSTRACT Comparative evidence of how two Gulf Cooperation Council (GCC) states translate artificial intelligence (AI) ambitions into post–New Public Management (post‐NPM) outcomes are scarce because most studies focus on Western democracies. To fill this gap, we examine constitutional, collective choice, and operational rules that shape AI uptake in ...
Mohammad Rashed Albous   +2 more
wiley   +1 more source

长链非编码RNA预测头颈部鳞状细胞癌患者预后的研究

open access: yesZhongguo shiyan zhenduanxue, 2020
目的研究长链非编码RNA(long non-coding RNA,lncRNA)预测头颈部鳞状细胞癌(head and neck squamous cell carcinoma,HNSC)患者预后的作用。方法下载癌症基因组图谱(The Cancer Genome Atlas,TCGA)数据库中HNSC的lncRNA表达数据,使用edgeR包分析HNSC样本中差异表达的lncRNAs。使用COX回归分析筛选预测预后的关键lncRNAs,使用Kaplan ...
向琳, 徐晓晨, 谭君武, 杜波
doaj  

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