0D/3D direct Z-scheme heterojunctions hybridizing by MoS2 quantum dots and honeycomb conjugated triazine polymers (CTPs) for enhanced photocatalytic performance

Herein, a novel direct Z-scheme photocatalyst was accomplished by hybridization of 0D MoS₂ quantum dots (MSQDs) and 3D honeycomb-like conjugated triazine polymers (CTP) (namely, CTP-MSQD). The unique 0D/3D hierarchical structure significantly enhanced the exposure of active sites and light harvesting property, while the formed p-n junction enabled the direct strong interface coupling without the necessity of any mediators. The optimized CTP-MSQD3 exhibited continuously increased visible-light-driven photocatalytic activity and strong durability both in Cr(VI) reduction and H₂ evolution, featured a rate of 0.069 min⁻¹ and 1070 µmol/(hr∙g), respectively, which were 8 times than those of pure 3D-CTP (0.009 min⁻¹ and 129 µmol/(hr∙g)). We believe that this work provides a promising photocatalyst system that combines a 0D/3D hierarchical structure and a Z-scheme charge flow for efficient and stable photocatalytic conversion.     

氧瓶燃烧法与冷原子吸光光度法测定煤中痕量汞

本文介绍了以氧瓶燃烧法处理煤样,氯化亚锡还原汞离子,用冷原子吸收法测定汞的含量。同时,对氧瓶燃烧法处理煤样的可靠性进行了考察。     

关于居住区规划环评中限制因素的探讨

在初步设计了规划的环境制约因素指标体系的基础上，利用指标体系进行了《柴河新区分区规划》的环境因素的识别和筛选，对筛选出的跨界因素、社会因素、环境污染、与上级规划的符合性和视觉景观等重要的限制因素进行了分析，并针对识别出的环境限制因素提出相应的对策，规避规划在实施的过程中可能带来的环境影响，为实现区域的可持续发展提供科学依据。     

某排污扩散器水力特性的实验研究

对某实际排污工程多喷头扩散器的水力特性进行了系统的实验研究。内容包括：在不同污水排放是、环境流速和潮位情况下，扩散器各喷头的流量分配，喷口流速分布；扩散器管路的冲洗，水流阻力特性等；以及扩散器近区稀释特性分析，结论对实际排污系统设计有一定的参考价值。     

拟除虫菊酯对DPPC脂质体结构的影响

以DPH荧光偏振技术研究了含氰基和不含氰基两类拟菊酯与DPPC单层脂体间的相互作用。拟菊酯作用于膜的疏水区,降低DPPC脂质体的相变温度,加宽相变范围,随其浓度增加对磷脂有序排列的破坏加剧。氯菊酯具有干扰磷脂有序排列的能力,在凝胶态随其浓度的增加,P值降低幅度增大,在液晶态对P值基本无影响。氰基的导入,使北京菊酯、氯氰菊酯和杀灭菊酯既具有干扰磷脂有序排列的能力,又能产生荧光碰撞猝灭,在凝胶态,先降低P值,然后P值增大,当其浓度较大时,P值又略有下降,在液晶态,低浓度对P值影响不大,浓度较高时P值明显上升。     

Water quality assessment through hydrodynamics and transport simulation in the S. Gilla lagoon, Italy

The paper describes the study of the hydrodynamic and transport features of the S. Gilla lagoon in Sardinia, Italy. The study, aimed at assessing the environmental quality of the water body, involved extensive use of numerical models based on the shallow water equations, thus enabling to simulate a number of different situations of practical interest. Based on field data, six meteorological and hydrologic patterns were recognised which were assumed as representative of the various conditions occurring in the four seasons. Typical winter conditions proved effective for the water refreshment, while the other seasonal patterns induced a stronger internal mixing. Thus, unfavourable salinity distributions with respect to the fish farm activities, which are carried out in the water body, were obtained with the winter pattern, whereas, on the other hand, a higher dilution of pollutants discharged by the river inflows was achieved. In general, between dominant winds, southeast winds proved more effective in forcing internal mixing than northwest winds. Two flood events with quite different return periods were also simulated, in order to estimate the extent of the inundated areas and the salinity depletion. The consequent salinity recovery was simulated both in natural conditions and with the discharge of salt sea water into the lagoon to accelerate the salinity re‐equilibrium. This revised version was published online in August 2006 with corrections to the Cover Date.     

一种新型电除尘器的半工业性试验

论述小断面六角形通道电除尘器的结构特点及其半工业性试验结果.     

Turning waste to wealth-biodegradable plastics polyhydroxyalkanoates from palm oil mill effluent – a Malaysian perspective

Palm oil industries have been contributing significantly towards the country’s economy and increase standard of living among Malaysians. However, it has also been identified as the major contributor for discharging the largest pollution load throughout the country. Owing to high biochemical oxygen demand (BOD) and chemical oxygen demand (COD), the palm oil mill effluent (POME) cannot be discharged directly into the environment. Thus, palm oil industries are facing tremendous challenges in order to comply with environmental regulations. While anaerobic digestion has been employed by most mills as primary treatment, POME can also be a potential source of degradable organic material which can be converted into value-added products and fine chemicals. Organic acids generated during acid-phase anaerobic digestion of POME could be a potential carbon source for the production of polyhydroxyalkanoates (PHA)- a biodegradable thermoplastic material of microbial origin. This paper aims at understanding how organic acids from POME may serve as a renewable feedstock for the biosynthesis of PHA.