Results 1 to 10 of about 113,590 (157)
Journal of Microbiology and Biotechnology, 2019 β-Glucosidases and β-xylosidases are two categories of enzymes that could cleave out nonreducing, terminal β-D-glucosyl and β-D-xylosyl residues with release of D-glucose and Dxylose, respectively. In this paper, two functional β-glucosidase Dth3 and β-xylosidase Xln-DT from Dictyoglomus thermophilum were heterologously expressed in E.coli BL21 (DE3 ...
Qi, Li +5 more
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Gongye shui chuli, 2022 生物氧化除锰法处理锰矿废水具有较好的应用前景，然而常见的锰氧化菌在酸性条件下活性差，以湘潭污水处理厂活性污泥为来源，通过平板划线法筛选耐酸性锰氧化菌，通过16SrDNA序列对比分析进行菌种鉴定，考察污染物初始浓度、溶液pH、接种量等对其去除Mn（Ⅱ）能力的影响，结合产物理化表征与动力学过程，全面研究该菌株的除锰行为。结果表明：该锰氧化菌菌株属于Klebsiella sp.，在Mn（Ⅱ）质量浓度为1 000 mg/L时依然长势良好；当pH为中性，氧化除锰率能达到98.93%，更重要的是pH为4时 ...
莫忠耿, 李勇超, 陈丽苹, 徐政
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Gongye shui chuli, 2023 自含锰土壤中筛选得到2株具有除锰能力的革兰氏阳性菌S1、S2，比对16S rRNA序列结果，推测2株细菌可能为巨大芽孢杆菌（Baciulls megaterium）和嗜麦芽寡养单胞菌（Stenotrophomonas maltophilia）。在质量浓度为260 mg/L的Mn2+培养基中培养6 d后，2株细菌对Mn2+的去除率均可达95%以上。扫描电镜能谱（SEM-EDS）分析、X射线衍射（XRD）分析表明这2株细菌是通过将Mn2+转化为MnCO3实现对Mn2+的去除 ...
尹思雨, 黄磊, 党俊杰, 邓冬梅
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Gongye shui chuli, 2021 采用间歇式电絮凝装置，以铁铝为复合电极，考察氯化物浓度、电流密度、极板间距以及pH对电絮凝去除地下水中砷、锰、氟三类污染物效果的影响。结果表明，氯化物浓度变化对锰和砷的去除几乎没影响，但浓度过高会阻碍电絮凝除氟过程的进行；反应初期随pH和电流密度增加，目标污染物去除率增大，随极板间距增大，目标污染物去除率减小，反应后期恰恰相反；在最佳运行条件下，即电流密度3 mA/cm2，电解时间25 min，极板间距2.0 cm，初始pH 6.0条件下，砷、锰、氟的去除率分别为99.75%、100.00%、69.84%
张浩 +4 more
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E o palhaço o que é? É uma mulher
Arteriais - Revista do Programa de Pós-Gradução em Artes, 2019 ResumoEste ensaio traz a fala de uma mulher que descobre em si um palhaço, mesmo atuando, há 13 anos, como palhaça. O encontro com o palhaço Uisquisito ocorreu em 2012, no grupo de teatro Palhaços Trovadores, do qual faço parte há 10 anos. A partir disso, atuar na palhaçaria com gêneros diferentes, feminino e masculino, trouxe-me reflexões não só na ...
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Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Skin wound injuries are often accompanied by bacterial infections and severe inflammation. Especially, M1‐type macrophages at the wound site can trigger a cascade of inflammatory responses, mediating a vicious cycle of inflammation. Meanwhile, hypoxia further exacerbates vascular damage and constriction in the wound microenvironment, thereby ...
Xianfeng Wang +6 more
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Pensando - Revista de Filosofia, 2017 Não parece haver, ao menos num primeiro olhar, qualquer ponto de convergência entre a literatura de Lampedusa e a filosofia de Kierkegaard. Contudo, com um pouco mais de investigação, tal percepção revela-se falsa. Ambos os autores se situam no século XIX e, nesse sentido, há forte conexão entre ambos a partir de uma análise histórica, filosófica e ...
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Gongye shui chuli, 2007 研究了锰砂过滤工艺在钢铁废水回用处理中除铁除锰的应用。在滤速5.0m/h、工作周期4d、反冲洗强度21 L/(m2.h)和反冲洗时间6 min的操作条件下, 经过自然生物培养成熟的锰砂滤层对钢铁回用废水中的总铁、锰的去除率达80%以上, 出水总铁和锰都达到再生水用作循环冷却用水的水质要求。同时成熟的锰砂滤料还具有一定的COD和氨氮去除能力。
徐竟成 +5 more
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Gongye shui chuli, 2022 生物强化脱氮技术是城镇污水处理厂重点关注的技术之一，现有大量研究表明改性填料可以增强污水生物脱氮效果。制备了一种锰负载丝瓜络填料，构建以锰负载丝瓜络为生物载体的生物滤池系统，应用同步硝化反硝化（SND）技术处理模拟低碳氮比生活污水，考察反应器的启动及一系列C/N条件下系统脱氮性能的变化情况。结果表明，系统运行20 d后，实验组和对照组总氮去除率分别可达39.92%和60.07%左右，实现了SND的启动；且在反应器启动阶段，实验组COD、NH4+-N、TN平均去除率均高于对照组，分别提高了4.61%、20.
黄佳琦 +3 more
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Gongye shui chuli, 2007 针对太湖区地表水源水铁、锰含量高的问题, 选择高锰酸盐、二氧化氯和过氧化氢三种预氧化剂对其进行除铁、锰的预处理。试验结果表明:高锰酸盐投加质量浓度为0.45 mg/L时, 铁、锰的去除率分别为75%、85%, 制水成本增加0.007元/t, 采用二氧化氯预处理, 其投加质量浓度为1.5 mg/L时, 铁、锰的去除率分别为75%、79%, 制水成本增加0.093元/t, 而过氧化氢投加质量浓度4 mg/L时, 铁、锰的去除率分别为66.7%、41.7%, 在最佳投量下, 过氧化氢增加制水成本为0.12元 ...
孙士权 +4 more
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