MFC 技术处理铜、银重金属废水的研究

将具有氧化性的有机废水池作为电池的阳极,具有还原性的重金属废水池作为电池的阴极,利用微生物燃料电池（ MFC）同时处理有机废水和重金属废水．结果表明,利用铜离子溶液作阴极, MFC最大电压可达到0．277 V,最大功率密度为33．49 mW/m2,COD的去除率为31．6％,铜的去除率可达42％;利用银离子溶液作阴极,MFC最大电压可达到0．311 V,最大功率密度为42．21 mW/m2, COD的去除率为64．6％,银的去除率可达78％．即不管是从产电角度还是从废水处理角度考虑,都是以银离子废水作阴极优于铜离子．     

导热油炉在广西淀粉行业使用中常见问题及解决对策研究

对淀粉生产行业使用的烘干设备——导热油炉(有机热载体炉)运行中常见问题进行分析,并提出了有机热载体炉在运行中出现问题的解决对策,在广西当前还没有关于该类特种设备的专业培训的情况下,对企业的安全生产有较大的指导意义。     

The Impact of Eco-regions in Austria on Sustainable Rural Livelihoods

This paper provides a closer look into the concept of eco-regions in Austria. The idea behind the eco-region is to merge organic farming and rural development into a territorial strategy. The actors proposing this are farmers as well as various stakeholders in regional development. A survey of current manifestations of eco-regions in Austria provides an overview and a base for a preliminary classification. It also indicates the eco-region concept as a potential answer to individual problem situations. The ‘Eco-region National Park Hohe Tauern’ serves as a specific case to assess the impact of this concept using the sustainable rural livelihood (SRL) framework. The case study proves that the concept of eco-regions delivers a range of improvements in the livelihood of small organic farms in less favoured regions. Moreover it supports the forging of new alliances, which can extend the principles of sustainability inherent to organic farming to other actors and sectors in the region. Thus it provides the framework for a territorial application of the principles of organic farming. But the case study also reveals potential dangers, especially from powerful market partners who use the concept for their purposes, dominating further development and creating new dependencies. Finally some general conclusions on the preconditions necessary to establish eco-regions are presented.     

A Penrosean theory of acquisitive growth

Penrose's book The Theory of the Growth of the Firm presents a growth theory that overwhelmingly relates to organic growth, with little explicit focus on acquisitive growth. This article addresses the gap in her growth theory by drawing on the historical case of Enodis, and insights from the resource-based view of the firm, to develop a Penrosean theory of acquisitive growth. It concludes that acquisitive growth not only enables a firm to grow more quickly, but that under specific conditions, through its increase in the diversity of resources at the disposal of managers, it may act as a spur to future organic growth.     

Gliricidia sepium Carbon Inputs and Soil Carbon Pools in a Costa Rican Alley Cropping System

Alternative land management practices, including agroforestry, help to maintain levels of soil organic matter (SOM) and can facilitate soil carbon (C) sequestration for mitigating atmospheric CO₂ emissions. This study quantified C inputs and determined the changes of the soil C pool in a 19-year-old Gliricidia sepium alley cropping system, studied at two fertiliser levels (tree prunings only [? N], and tree prunings plus chicken manure [+ N]), and was compared to a sole crop system. Carbon input from tree prunings ranged from 455 to 457 g C m^{? 2} y^{? 1}, whereas C inputs from crop residues were similar between alley- and sole crops ranging from 121 to 159 g C m^{? 2}y^{? 1}. The soil organic C (SOC) pool in the alley crop was 16–23% higher than the sole crop. In the 19th year of alley farming, SOC was significantly higher (p < 0.05) in the alley crop (3.2%) compared to the sole crop (2.4%), and was also greater compared to that at the time of establishment of the agroforestry system (2.8%). Gross SOC turnover to a 20-cm depth ranged from 12 to 14 years in the + N and ?N alley crops compared to 49 and 50 years in the + N and ?N treatments for the sole crops. Residue stabilisation efficiency in the alley crops was 39% and 55% in + N and ?N treatments respectively.     

有机食品市场拓展的战略初探

当前有机食品的市场运作过程中正呈现两难窘地，一方面有机食品总体供不应求，另一方市场上高价有机食品销售不畅，导致这一局面的主要原因是农户分散经营及有机食品营销渠道不畅。因此文章通过挖掘消费者的潜在需求、以消费者能够接受的成本定价，以方便购买的原则进行渠道规划和双向沟通四方面对有机食品市场拓展进行理性分析，以期引起生产经营者与消费者的关注。     

利用粉煤灰生产农用肥

粉煤灰可以直接用作肥料还可用来制作多种肥料.本文总结了目前各种粉煤灰肥料的特点和生产方法,对生产、作用机理进行了分析,简单论述了粉煤灰肥料的应用方法,最后提出了应注意的问题.     

城市有机生活垃圾厌氧发酵前景广阔

采用厌氧发酵技术处理城市有机生活垃圾是较其它处理方法更具优势的处理方式.既能有效地减少垃圾污染,又可以产生很好的经济效益和巨大的环境效益.这种垃圾处理方式值得应用和推广.     

利用制药厂废水生产农用测土配方肥

利用制药厂的废水生产农用测土配方肥,方法可行,生产操作简单,做到废物循环利用,实现了经济、社会和环境三效益的统一.     

中美两国创业投资的发展比较研究

通过将中美两国创业投资的发展相比较来说明我国创业投资这一产业中目前存在的问题,诸如,政府的行政导向明显,法律法规不够健全以及缺乏专业的创投人才等等。并且在此基础之上尝试性地提出了一些解决办法。