Search results for "Logging"
showing 10 items of 106 documents
Fate of aerobic granular sludge in the long-term: The role of EPSs on the clogging of granular sludge porosity
2016
This work aims to investigate the stability of aerobic granular sludge in the long term, focusing on the clogging of the granular sludge porosity exerted by the extracellular polymeric substances (EPSs). The effects of different cycle lengths (short and long-term cycle) on the granular sludge stability were investigated. Results obtained outlined that during the short duration cycle, the formation and breakage of the aerobic granules were continuously observed. During this period, the excess of EPS production contributed to the clogging of the granules porosity, causing their breakage in the long run. During the long-duration cycle, the extended famine period entailed a greater EPSs consump…
Expressing Professional Identity through Blogging - A Case Study of Blogging in the Study of the Subject of Norwegian in Pre-School Teacher Education
2015
Abstract This article shows how blogging was used in a course in Norwegian in pre-school teacher education, and investigates how professional identity was expressed in the blogs. We investigate the students’ use of the affordances of the blog medium, and connect their expressions to the five competencies of pre-school teachers expressed in the Norwegian framework plan for this education (subject, didactic, social, developmental and ethical competence). Connections between professional identity, subject content and uses of ICT are thus drawn up.
Control of VOC emissions from a flexographic printing facility using an industrial biotrickling filter.
2011
The study of an industrial unit of biotrickling filter for the treatment of the exhaust gases of a flexographic facility was investigated over a 2-year period with the objective to meet the volatile organic compound (VOC) regulatory emission limits. Increasing the water flow rate from 2 to 40 m3 h−1 improved the performance of the process, meeting the VOC regulation when 40 m3 h−1 were used. An empty bed residence time (EBRT) of 36 s was used when the inlet air temperature was 18.7 °C, and an EBRT as low as 26 s was set when the inlet temperature was 26.8 °C. During this long-term operation, the pressure drop over the column of the bioreactor was completely controlled avoiding clogging prob…
The effect of forest fuel harvesting on the fungal diversity of clear-cuts
2012
Abstract The removal of logging residues and stumps from clear-cuts has become a common forestry practice. Forest fuel harvesting decreases the initially low volume of dead wood in managed forests, but the biodiversity effects are poorly known. We studied the effects of forest fuel harvesting on decomposer fungi on clear-cut Norway spruce stands in central Finland. The number of occurrences and taxa of polypores, saprotrophic agarics and pleurotoid agarics were determined on 10 forest fuel harvested and 10 control clear-cuts 4–5 years after logging. In total, we recorded 148 fungal taxa. The total number of taxa, the number of polypore occurrences, and the number of polypore species within …
Does Forest Fragmentation and Selective Logging Affect Seed Predators and Seed Predation Rates of Prunus africana (Rosaceae)?
2007
Forest fragmentation and selective logging can influence the life cycle of tropical tree species at several levels, e.g., by lowering pollination, by limiting seed dispersal, and by increasing seed predation. Understanding human-induced modifications in ecosystem processes such as seed predation is essential for conservation management of threatened species. We studied the impact of forest fragmentation and selective logging on seed predation of the endangered tree Prunus africana in the tropical rain forest of Kakamega, Kenya. We quantified the activity of seed predators in the main forest, forest fragments, and in sites of different logging intensity in the dry and rainy seasons of 2003 a…
Through a Glass, Darkly
2013
Political actors increasingly use the microblogging service, Twitter, for the organization, coordination, and documentation of collective action. These interactions with Twitter leave digital artifacts that can be analyzed. In this article, we look at Twitter messages commenting on one of the most contentious protests in Germany’s recent history, the protests against the infrastructure project Stuttgart 21. We analyze all messages containing the hashtag #s21 that were posted between May 25, 2010, and November 14, 2010, by the 80,000 most followed Twitter users in Germany. We do this to answer three questions: First, what distinguishes events that resulted in high activity on Twitter from ev…
Traditional use of wood in Sicily
2020
The results of a multidisciplinary survey on the use of wood in Sicily are presented here. This research, based on a thorough review of the information available from numerous sources, mostly related to Socio-economic Sciences and Humanities, sheds light on the lasting, widespread and diversified use of many tens of woody species - native and cultivated - growing on the island. This work represents an initial contribution to a topic largely overlooked the national and regional literature concerning forest sciences and wood technology. Contrariwise, the very precise information available on the specific uses of wood from certain Sicilian woody species clearly testifies to the profound knowle…
Mix-design del calcestruzzo permeabile per la realizzazione di trincee drenanti profonde
2017
La riduzione delle pressioni interstiziali rappresenta uno degli interventi più efficaci per migliorare le condizioni di stabilità di pendii con ridotti margini di sicurezza o per stabilizzare pendii in frana. Per tali finalità si possono impiegare le trincee drenanti, realizzate con comuni escavatori e riempite di materiale grossolano. Questa tipologia costruttiva non può essere impiegata se le trincee sono profonde. In questo caso occorre ricorrere a mezzi di scavo disponibili per la realizzazione dei diaframmi e dei pali secanti. Tuttavia, il materiale di riempimento delle trincee non può essere costituito di materiali sciolti, ossia materiali non cementati, dal momento che lo scavo di u…
La legge crudele. L’amministrazione della giustizia di Roma nel IV secolo d.C. tra amplificazione e realtà
2013
Realism and accuracy of the testimony by the rhetor Libanius of Antioch on the arbitrary administration of justice by the governors of Syriac metropolis impress the mark of cruelty upon the judicial practice of the time. The study of the criminal justice system leads to a sociological analysis, although the juridical and social status was losing importance in light of the gravity of the crimen.
In rete la cucina è politica. Alcuni modelli di analisi e uno studio di caso.
2013
Gastronauti e chowhounds, ghiottoni, gourmand e gourmet, in una parola foodies: l’attuale megatrend culinario deve molto alle pratiche di socializzazione su Internet. Di cibo, in rete, si comincia a scrivere fin da subito (i board di Chowhound, per esempio, aprono i battenti già nel 97), la qual cosa dice anche molto su quanto la “grande conversazione” sia debitrice del discorso gastronomico. Il cibo e le chiacchere su Internet si presentano, infatti, come intrinsecamente legati, classico binomio inscindibile. In tutto il mondo, blogger e storyteller culinari diventano, pertanto, autori di culto, in grado di generare schiere di fedeli lettori pronti a seguire il proprio beniamino ovunque, s…