3种腐熟剂促进玉米秸秆快速腐解特征

为筛选出适宜东北寒冷区快速腐解秸秆的腐熟剂,通过网袋腐解试验明确施入3种秸秆腐熟剂对玉米秸秆生物量及养分释放的影响。结果显示：经过100 d的腐解,玉米秸秆生物量失重率随着时间的延长逐渐增加,玉米秸秆失重率为57.1%-64.1%,其中以施用3号秸秆腐熟剂的玉米秸秆生物量失重率最高,为64.1%。施入不同秸秆腐熟剂后玉米秸秆氮、磷、钾释放率分别为35.1%-57.2%、44.2%-59.6%、77.4%-89.7%,其中以3号腐熟剂的秸秆磷、钾素释放率最高。各处理有机碳矿化率呈相同的趋势,均随时间的延长逐渐增加,取样末期有机碳矿化率在65.3%-69.1%之间,且各处理间差异不明显。综上,以3号秸秆腐熟剂腐解秸秆的效果最好。     

Cross-country electricity trade,renewable energy and European transmission infrastructure policy

This paper develops a multi-country multi-sector general equilibrium model, integrating high-frequency electricity dispatch and trade decisions, to study the effects of electricity transmission infrastructure (TI) expansion and renewable energy (RE) penetration in Europe for gains from trade and carbon dioxide emissions in the power sector. TI can benefit or degrade environmental outcomes, depending on RE penetration: it complements emissions abatement by mitigating dispatch problems associated with volatile and spatially dispersed RE but also promotes higher average generation from low-cost coal if RE production is too low. Against the backdrop of European decarbonization and planned TI expansion, we find that emissions increase for current and targeted year-2020 levels of RE production and decrease for year-2030 targets. Enhanced TI yields sizeable gains from trade that depend positively on RE penetration, without creating large adverse impacts on regional equity.     

盐度对MFC产电及其微生物群落的影响

本文研究了模拟废水中不同盐度对微生物燃料电池(Microbial fuel cell, MFC)性能的影响.当向MFC中依次添加0,20,40,60,70g/L NaCl时,MFC的最大输出电压从660mV下降到130mV,库仑效率也从67%下降到4%.如果向MFC中直接添加40g/L和70g/L NaCl并运行两个周期后,MFC无电能输出,然而,停止添加NaCl(盐度解除)后MFC产电性能能够在60h内恢复.此外,当盐度高于40g/L NaCl时,阳极微生物群落发生明显的变化.研究结果可为MFC或其他生物反应器处理盐度废水提供一定的依据.     

Sediment microbial fuel cell with floating biocathode for organic removal and energy recovery

A sediment microbial fuel cell (SMFC) with three dimensional floating biocathode (FBC) was developed for the electricity generation and biodegradation of sediment organic matter in order to avoid negative effect of dissolved oxygen (DO) depletion in aqueous environments on cathode performance and search cost-effective cathode materials. The biocathode was made from graphite granules with microbial attachment to replace platinum (Pt)-coated carbon paper cathode in a laboratory-scale SMFC (3 L in volume) filled with river sediment (organic content 49±4 g·kg^-1 dry weight). After start-up of 10 days, the maximum power density of 1.00W·m^-3 (based on anode volume) was achieved. The biocathode was better than carbon paper cathode catalyzed by Pt. The attached biofilm on cathode enhanced power generation significantly. The FBC enhanced SMFC performance further in the presence aeration. The SMFC was continuously operated for an over 120-day period. Power generation peaked within 24 days, declined gradually and stabilized at a level of 1/6 peak power output. At the end, the sediment organic matter content near the anode was removed by 29% and the total electricity generated was equal to 0.251 g of chemical oxygen demand (COD) removed.     

炭素焙烧炉沥青烟静电除尘技术

针对炭素焙烧炉含尘低浓度高温沥青烟，优化设计方案，采用干式、湿式预处理和静电净化两级处理，先除去大粒径烟尘，降低烟尘温度，降低电阻率，后静电净化沥青烟。系统具有自动控制，节电节能，除尘效率高等特点。     

摩擦对防静电无尘服装功能的影响研究

本文模拟人体穿着状况下的防静电无尘服与内部服装之间的摩擦,对因摩擦导致的功能性变化进行了研究。通过实验发现,随着摩擦次数的增加,服装上的静电压有增大的趋势,从而导致防静电功能的下降。对于用长丝制作的服装,防尘性能与透气性有着直接的联系,通过透气性测试发现,服装的防尘性能随着摩擦次数的增加逐渐下降。结合防静电无尘服的使用情况,就可以确定防静电无尘服的防尘功能变化趋势及其安全使用周期。     

苏州地区典型输变电工程电磁环境影响分析

结合电磁场的生态效应、输变电电磁辐射的环境影响分析度评价等，分析了苏州地区典型输变电工程电磁辐射的污染状况。说明220kV输变电工程电磁辐射没有超过居民区工频电场以度磁感应强度标准。     

某水电站消防设备布置与控制的探讨

预防火灾和减少火灾危害,保护公民人身、公共财产的安全,维护公共安全是水电站建设管理的一个重要组成部分.笔者通过从水电站周围环境、地形条件、消防车道、消防水源、总平面布置、防火区划分等的分析探讨,为切实增强水电站抗御火灾提供依据.     

浅谈机电管理在现代化矿井中的应用

机电管理是现代化高产高效矿井建设的重要组成部分，建立起一整套与高产高效相配套的管理体系，是加强设备现场管理，实现矿井高产、稳产的有力保证。文章介绍了补连塔煤矿为实现设备的可靠运转，加强机电管理的具体应用。     

油品流动起电现象浅析及预防措施

油品在运输、装卸和储存等各环节都会产生静电。从分析油品在流动过程中静电产生的原理入手,分析了静电产生的原因,提出了具体的防静电措施。