Characterization of triclosan metabolism in Sphingomonas sp. Strain YL-JM2C

Triclosan (TCS) is one of the most widespread emerging contaminants and has adverse impact on aquatic ecosystem, yet little is known about its complete biodegradation mechanism in bacteria. Sphingomonas sp, strain YL-JM2C, isolated from activated sludge of a wastewater treatment plant, was very effective on degrading TC

一种有机污染土壤原位修复设备

本实用新型涉及土地污染处理技术领域，具体涉及一种有机污染土壤原位修复设备，包括：隔离棚，其将污染土壤的施工区域密封，加压装置，其与一震波发生装置连接，该震波发生装置具有支管，所述支管伸入隔离棚的腔体内部，竖流式沉淀池，其通过吸水泵及管道与隔离棚的腔体内部连通，竖流式沉淀池上端具有进水口，下端具有出水口，臭氧池，其一端与竖流式沉淀池的出水口连通，另一端与加压装置连通，微纳米气泡发生装置，其与臭氧池连接。本实用新型利用微纳米气泡发生装置产生微纳米气泡，进入臭氧池，通过微纳米气泡提高臭氧在水中的溶解量，并其破裂时可释放出大量的羟基自由基，增强臭氧氧化降解效果，提高土壤原位修复效果，避免二次污染

一种去除废水磷回收产品中重金属的方法

一种去除废水磷回收产品中重金属的方法，属于水污染控制与资源再生领域，是一种降低磷回收产品生态环境风险的方法。本发明所述方法为：先采用前处理方法（如混凝、过滤、膜滤等）去除含磷废水中的悬浮性和胶体性有机质，然后固液分离；将上清液的pH值调至8.0-11.0，加入一定比例的镁源（如MgCl2、MgSO4、盐卤等）或钙源（CaCl2等）进行磷酸铵镁或磷酸钙结晶沉淀反应，通过投加碱（如NaOH、KOH）控制反应的pH值稳定在8.0-11.0直至反应结束；再固液分离，回收的沉淀物即为磷回收产品。通过上述步骤即可去除废水磷回收产品中的重金属。本发明在保证磷回收产率的前提下，通过去除废水中悬浮性和胶体性的有机质，达到去除重金属的目的，降低磷回收产品可能引起的生态环境风险，同时提高产品的品质

Scaling up of biomass simulation for Eucalyptus plantations based on landsenses ecology

Sustainable forest management on a regional scale requires accurate biomass estimation. At present, technologically comprehensive forecasting estimates are generated using process-based ecological models. However, isolation of the ecological factors that cause uncertainty in model behavior is difficult. To solve this problem, this study aimed to construct a meliorization model evaluation framework to explain uncertainty in model behavior with respect to both the mechanisms and algorithms in.

Electrochemical Characterization of a Novel Exoelectrogenic Bacterium Strain SCS5, Isolated from a Mediator-Less Microbial Fuel Cell and Phylogenetically Related to？Aeromonas jandaei

A facultative anaerobic bacterium, designated as strain SCS5, was isolated from the anodic biofilm of a mediator-less microbial fuel cell using acetate as the electron donor and α-FeOOH as the electron acceptor. The isolate was Gram-negative, motile, and shaped as short rods (0.9–1.3 μm in length and 0.4–0.5 μm in width). A phylogenetic analysis of the 16S rRNA, gyrB, and rpoD genes suggested that strain SCS5 belonged to the Aeromonas genus in the Aeromonadaceae family and exhibited the highes

蓝莓花青素有效缓解种群拥挤对果蝇的胁迫

【目的】 明确拥挤胁迫对果蝇生长发育的影响，并探讨蓝莓花青素（Blueberry anthocyanins， BAC）对黑腹果蝇Drosophila melanogaster Meigen 拥挤损伤的保护作用。【方法】 研究不同培养密度， BAC 浓度及两者协同处理对果蝇生长发育、胁迫应激和氧化应激的影响。【结果】 通过观察生长在低、 中、高密度下的果蝇发现，随着培养密度的升高，果蝇的蛹历期延长，体重和雌雄比显著下降，HSP70 的表达水平显著上升及MDA 显著下降。BAC 处理显著增加果蝇蛹的数量，缩短蛹历期，降低果蝇HSP70 的表达和MDA 含量。在高密度组果蝇培养基中添加维生素C（Vitamin C, VC）和BAC 后，拥挤胁迫仍 为主要影响因素，除了VC 显著缓解果蝇雌雄比失衡外，两种药物对果蝇体重和蛹历期的恢复均无显著效 应。但VC 和BAC 处理显著降低果蝇HSP70 的表达水平和MDA 含量，VC 处理显著提高CAT 和SOD 酶 活性，而BAC 对酶活性的影响小。雌蝇对拥挤胁迫更敏感，因此，高密度下VC 和BAC 对雌蝇的影响比 雄蝇大。【结论

Disentangling the factors that contribute to variation in forest

Mid-subtropical forests are the main vegetation type of global terrestrial biomes, and are critical for maintaining the global carbon balance. However, estimates of forest biomass increment in mid-subtropical forests remain highly uncertain. It is critically important to determine the relative importance of different biotic and abiotic factors between plants and soil, particularly with respect to their influence on plant regrowth. Consequently, it is necessary to quantitatively ..