Results 31 to 40 of about 571,798 (171)
通过序批式反应器(SBR)和移动床生物膜反应器(MBBR)两种类型反应器的运行比较了活性污泥和生物膜工艺对不同浓度四环素废水中污染物的去除效果,发现在相同生物量条件下生物膜系统对总氮和四环素的去除效果优于活性污泥系统。基于高通量测序的宏基因组学分析结果表明,活性污泥和生物膜中抗生素抗性基因(ARGs)种类和丰度的差异可能是导致污染物去除效果不同的主要原因。进一步对活性污泥和生物膜中微生物群落结构及其与ARGs的相关性进行分析,证实了微生物群落结构与ARGs组成显著相关 ...
孙浩浩 +4 more
doaj +2 more sources
Nitrogen Anchoring Effect Triggering Improved Reversible Hydrogen Storage of Mg(BH4)2
ABSTRACT This research uncovered the influence of nitrogen‐doped MXene Ti3CN on the reversible hydrogen storage properties of Mg(BH4)2. The Mg(BH4)2‐20Ti3CN composite began releasing hydrogen at a temperature of 80°C. In addition, the composite discharged over 8.8 wt% hydrogen at a comparatively lower temperature of 270°C, whereas the pure Mg(BH4)2 ...
Zhen‐Xuan Ma +7 more
wiley +1 more source
A Mini Review of Scientific Designs of Dynamic Responsive Fluids in Battery Technologies
ABSTRACT Dynamic responsive fluids are emerging as transformative elements in the evolution of battery technologies, marking a pivotal shift from static passive designs toward systems that actively sense and adapt to their operating environments. By integrating dynamic responsive fluids, batteries can interact with both internal and external stimuli in
Xiu‐Zhen Yang +11 more
wiley +1 more source
为了解卷羽鹈鹕(Pelecanus crispus)源大肠埃希菌(Escherichia coli)和粪肠球菌(Enterococcus faecalis)耐药性特征,采集圈养卷羽鹈鹕粪便9份,用全自动微生物生化鉴定法进行鉴定。结果表明:分别从9份粪便样中分离鉴定出大肠埃希菌9株,粪肠球菌7株。药敏试验结果显示,大肠埃希菌对氨苄西林、四环素和磺胺异恶唑的耐药性均较强,对阿莫西林/克拉维酸、头孢噻呋、多西环素等均较为敏感;粪肠球菌对青霉素、红霉素、四环素的耐药性均较强,对链霉素、呋喃妥因和氯霉素等较敏感 ...
张佰莲 1 马珺 2 刘群秀 2
doaj
Read the free Plain Language Summary for this article on the Journal blog. Abstract Grazing by large herbivores is a critical factor shaping grassland biodiversity and ecosystem functioning worldwide, yet its consequences for soil communities remain poorly understood.
Quanhui Ma +12 more
wiley +1 more source
尽管在利用生物炭去除盐酸四环素等抗生素方面已取得显著进展,但其在分散性、表面反应活性和吸附效率方面仍面临一定挑战,这凸显了对其进行纳米尺度工程改造的必要性。以玉米秸秆为原料,采用沉淀-热解两步法合成了单分散性优异的纳米生物炭,并将其用于盐酸四环素的去除研究。系统考察了材料类型、接触时间、反应温度和盐酸四环素浓度等因素对纳米生物炭吸附盐酸四环素性能的影响。实验结果表明,两步法制备的纳米生物炭较普通生物炭对盐酸四环素的去除效果更加优异。在25 ℃,盐酸四环素初始质量浓度为200 mg/L以及添加0.5 g ...
李彦景 +6 more
doaj +2 more sources
ABSTRACT Existing literature largely agrees that authoritarian regimes establish channels for political participation to gather valuable information on citizens' anti‐regime sentiments and policy preferences and to supervise lower‐level bureaucrats and firms.
Anton Bogs
wiley +1 more source
用三维荧光光谱仪研究了活性污泥EPS(Extracellular polymeric substances)和四环素的相互作用.活性污泥EPS中发现2种类蛋白荧光峰A(Ex/Em=225/340)和B(Ex/Em=280/338),其荧光强度随着盐酸四环素的加入而显著降低,峰A和盐酸四环素结合生成了不发荧光的物质,而峰B和盐酸四环素结合生成的物质在Ex/Em=295/416 nm处发荧光.峰A和峰B与盐酸四环素的相互作用适合用修正后的Stern-Volmer和Hill模型拟合 ...
中国科学院新疆生态与地理研究所环境污染与生物修复实验室,新疆乌鲁木齐830011 +6 more
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ABSTRACT This study evaluates the pragmatic comprehension competence of Chinese speech acts among adult learners of Chinese as a second language (CSL) and Chinese as a foreign language (CFL). A computerized Pragmatic Listening Judgment Task was adopted to collect accuracy and reaction time data from 88 participants from Mainland China and South Korea ...
Jing Jin, Yang Yang, Jieun Lee
wiley +1 more source
水产养殖环境常见四环素类抗生素抗性基因tet(M)的演化及传播的初步分析
利用分子系统学方法分析了20条水产养殖环境中常见的四环素抗性tet(M)基因的序列特点、多态性及系统发育,并对其细菌寄主分类、环境介质来源作相关性分析。结果表明,20条基因序列有4种单倍型,其中tet(M)-b和d是两种远缘基因型,而a和c则是二者之间的序列变异。系统发育树分成三大分支,tet(M)基因在进化及传播过程与其细菌寄主的基因背景及环境介质的来源并无严格的相关性,暗示该类基因在环境中传播与进化迅速 ...
任宗明 +4 more
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