8 research outputs found
Macroinvertebrates and microbes (Archaea, Bacteria) offer complementary insights into mine-pit lake ecology
The broad objective of this research was to determine the environmental drivers of macroinvertebrate and microbial assemblages in acidic pit lakes. This is important because pit lake ecosystem development is influenced by prevailing environmental characteristics. Three lakes (Stockton, Kepwari, WO5H) within a larger pit-lake district in Collie, Western Australia were surveyed for spatial variability of benthic macroinvertebrate and microbe (Archaea, Bacteria) assemblage composition as well as potential environmental drivers (riparian condition, aquatic habitat, sediments, and aquatic chemistry) of assemblages. With the exception of sediment chemistry, biophysical variables were significantly different across lakes and reflected riparian condition and groundwater chemistry. Microbial assemblages in pit lakes were significantly different across lakes and correlated with water chemistry, particularly metals in Lake WO5H. However, the most abundant microbes were not readily identified beyond class, making it difficult to speculate on their ecological function. Macroinvertebrate assemblage composition and species richness were also significantly different across all lakes, and in Lake WO5H (a lake with low pH and high metal concentrations), taxa were correlated with benthic organic matter as well as water chemistry. Results indicated that despite poor water quality, input of nutrients from terrestrial leaf litter can support or augment pit lake ecosystems. This is a demonstration of the concept that connection of pit lakes to catchments can positively affect aquatic ecosystems, which can inform management actions for remediation
Ultramicroelectrode Array Based Sensors: A Promising Analytical Tool for Environmental Monitoring
The particular analytical performance of ultramicroelectrode arrays (UMEAs) has attracted a high interest by the research community and has led to the development of a variety of electroanalytical applications. UMEA-based approaches have demonstrated to be powerful, simple, rapid and cost-effective analytical tools for environmental analysis compared to available conventional electrodes and standardised analytical techniques. An overview of the fabrication processes of UMEAs, their characterization and applications carried out by the Spanish scientific community is presented. A brief explanation of theoretical aspects that highlight their electrochemical behavior is also given. Finally, the applications of this transducer platform in the environmental field are discussed
La gobernanza y su relaciĂłn con la competitividad en una firma integrada a una cadena de suministro
Soportado en una bĂșsqueda bibliogrĂĄfica sobre
gobernanza y LogĂstica, el artĂculo destaca tendencias
teĂłricas sobre la gerencia de una firma formuladas
para organizar la producciĂłn de manera interna o
externa, estimando reducir costos, tiempo y riesgos
del proceso de producciĂłn. Se destaca el debate sobre
âgobernanza-gobernabilidadâ, âCadena de
Suministroâ, âLogĂstica de distribuciĂłnâ y
âcompetitividadâ. El artĂculo concluye sobre
estrategias que pueden diseñarse desde la
gobernanza de una firma que decide trabajar de
manera colaborativa con otras en una CDS
Shaping the social orientation of academic entrepreneurship: an exploratory study
Purpose Despite growing scholarly interest in academic entrepreneurship (AE) few studies have examined its non-commercial aspects and how it contributes to meeting grand societal challenges. One explanation for this may be the continuing focus of AE on intellectual property commercialization. This paper aims to address this knowledge gap by uncovering how universities can contribute to promoting non-commercial forms of AE. Design/methodology/approach This paper uses the human capital theoretical lens to make its argument and applies it to data obtained from exploratory qualitative research (55 semi-structured interviews and nine focus groups) in the developing countries of Bolivia, Colombia and Ecuador. Findings Universities can promote different forms of non-commercial AE even in the absence of sophisticated resources for innovation, through the stimulation of the specific human capital of the university community resulting from activities where they help others. Originality/value This paper proposes a general framework for advancing theory development in AE and its non-commercial forms, based on data obtained in uncharted territories for AE
Shaping the social orientation of academic entrepreneurship:an exploratory study
Purpose Despite growing scholarly interest in academic entrepreneurship (AE) few studies have examined its non-commercial aspects and how it contributes to meeting grand societal challenges. One explanation for this may be the continuing focus of AE on intellectual property commercialization. This paper aims to address this knowledge gap by uncovering how universities can contribute to promoting non-commercial forms of AE. Design/methodology/approach This paper uses the human capital theoretical lens to make its argument and applies it to data obtained from exploratory qualitative research (55 semi-structured interviews and nine focus groups) in the developing countries of Bolivia, Colombia and Ecuador. Findings Universities can promote different forms of non-commercial AE even in the absence of sophisticated resources for innovation, through the stimulation of the specific human capital of the university community resulting from activities where they help others. Originality/value This paper proposes a general framework for advancing theory development in AE and its non-commercial forms, based on data obtained in uncharted territories for AE
Are Microcosms Tiny Pit Lakes?
Microcosm experiments are frequent precursors to field trials for the treatment of acidic pit lakes using organic matter. We conducted field and microcosm experiments to test the effectiveness of hay to remediate two small, shallow acidic pit lakes. âWestâ Lake was treated with 19 t of hay and âEastâ Lake was untreated. Microcosms mimicked key lake trends in water quality, increasing pH and reducing metal concentrations to a greater extent and faster than the field trial. However, microcosms are not tiny pit lakes because they provide an overly optimistic picture of remediation efficacy
Governance and its relationship with competitiveness in a firm integrated into a supply chain
Soportado en una bĂșsqueda bibliogrĂĄfica sobre
gobernanza y LogĂstica, el artĂculo destaca tendencias
teĂłricas sobre la gerencia de una firma formuladas
para organizar la producciĂłn de manera interna o
externa, estimando reducir costos, tiempo y riesgos
del proceso de producciĂłn. Se destaca el debate sobre
âgobernanza-gobernabilidadâ, âCadena de
Suministroâ, âLogĂstica de distribuciĂłnâ y
âcompetitividadâ. El artĂculo concluye sobre
estrategias que pueden diseñarse desde la
gobernanza de una firma que decide trabajar de
manera colaborativa con otras en una CDS.Supported in a bibliographic search on governance
and logistics, the article highlights theoretical trends
on the management of a firm formulated to organize
production internally or externally, estimating to
reduce costs, time and risks of the production
process. The debate on "governance-governability",
"Supply Chain", "Distribution logistics" and
"competitiveness" stands out. The article concludes
on strategies that can be designed from the
governance of a firm that decides to work
collaboratively with others in a CSD