Search results for "raft"
showing 10 items of 1545 documents
BVLOS UAS Operations in Highly-Turbulent Volcanic Plumes.
2020
Long-range, high-altitude Unoccupied Aerial System (UAS) operations now enable in-situ measurements of volcanic gas chemistry at globally-significant active volcanoes. However, the extreme environments encountered within volcanic plumes present significant challenges for both air frame development and in-flight control. As part of a multi-disciplinary field deployment in May 2019, we flew fixed wing UAS Beyond Visual Line of Sight (BVLOS) over Manam volcano, Papua New Guinea, to measure real-time gas concentrations within the volcanic plume. By integrating aerial gas measurements with ground- and satellite-based sensors, our aim was to collect data that would constrain the emission rate of …
Gender Neutrality in Legislative Drafting Techniques. Where conventionality in English Language Meets Creativity in a Diachronic Perspective
2019
Over the last decades, proposals to modernise legislative drafting have been choral and among the specific causes generally mentioned there are sentences of undue length, overuse of archaic expressions, repeated definitions and expressions, partiality of nominalisations, lack of gender neutrality. The aim of this analysis is to explore the legislative techniques adopted by drafters of English-speaking countries over the last decades, who are asked to write legal sentences aiming at gender fair and symmetric representation of men and women. The issue examined from a lexico-grammatical perspective culminates in the proposed questions whether certain techniques used to implement gender-neutral…
STRUMENTO MEDICO PER INSERIMENTI INTRALUMINALI
2018
La presente invenzione trova applicazione nel settore dei dispositivi medici inseribili all’interno del corpo umano ed ha particolarmente per oggetto uno strumento medico per inserimenti intraluminali, quali dispositivi per incannulazione o cateterizzazione del sistema vascolare.
Analysis of Electrical Loads and Strategies for Increasing Self-Consumption with BIPV Case study : Skarpnes Zero-Energy House
2017
Master's thesis Renewable Energy ENE500 - University of Agder 2017 At Skarpnes village (Southern Norway), the houses as zero energy buildings (ZEB) are installed with Building Integrated Photovoltaic (BIPV) systems, and these houses are not containing smart control of equipments. The aim of such buildings is that the amount of electrical energy produced is the same as that consumed in the buildings on an annual basis. In this thesis, the main objective is to analyse the methods for increasing self -consumption in BIPV, by minimizing the cost of purchasing electricity from the grid at time with no PV production, and maximizing the utilization of solar PV generated power, which reduces the po…
The network of heliports as a necessary tool to develop rotorcraft services
2012
The rotorcraft operations will grow as air taxi services and business trips and even as “commuter”, intercity and line services between urban centres and touristic or economic-industrial places of special value. But actually the rising public opposition to helicopter activities reduces the number of available heliports for private and corporate operators, as environmental limits of all type of allowed operations and of suitable sites to construct new infrastructures. So the growth of scheduled rotorcraft services (passengers and freights) has to be supported not only by advances in machine’s technologies, but also by an adequate and strategically distributed infrastructure network. This vis…
Effetti del portinnesto sulla produttività e sulla qualità dell'anguria.
2010
The research aims to investigate the effects of different rootstocks on productive and qualitative aspects of two watermelon cultivars: Dumara, that produces big fruits and Minirossa that produces smaller fruits. For each cultivar, a randomized complete-block design was used with 3 replications to compare the following six grafting combinations: grafted plants into five rootstocks (Elsi, RS 841, Shintosa, Lagenaria corta, Anguria selvatica) and ungrafted plants. The highest yield of both cultivars was obtained with RS 841 while the lowest was observed with not grafted plants and grafted on elsi. However, using Elsi as rootstock, the plants gave fruits of greatest size. the best quality para…
Lignin recovery from spent alkaline pulping liquors using acidification, membrane separation, and related processing steps: A Review
2019
The separation of lignin from the black liquor generated during alkaline pulping is reviewed in this article with an emphasis on chemistry. Based on published accounts, the precipitation of lignin from spent pulping liquor by addition of acids can be understood based on dissociation equilibria of weak acid groups, which affects the solubility behavior of lignin-related chemical species. Solubility issues also govern lignin separation technologies based on ultrafiltration membranes; reduction in membrane permeability is often affected by conditions leading to decreased solubility of lignin decomposition products and the presence of colloidal matter. Advances in understanding of such phenomen…
Domestic dexterity and cultural policy : the idea of cottage industry and historical experience in Finland from the great famine to the reconstructio…
2016
The concept of cottage industry (kotiteollisuus) referred especially to rural craft practices. For the promotion of cottage industries, a state administrative organ and a network of cottage industry associations and schools were established. A sphere developed and monitored by specialists, cottage industry policies were planned as official committee work. However, the matter was usually addressed as ‘the idea of cottage industry’ (kotiteollisuusaate). In this study, the historical idea of cottage industry and its cultural and political backgrounds are analysed. The starting point of the investigation is in the post-WWII Cottage Industry Production Committee, but from its years of activity, …
L'alimentation carnée à Aventicum/Avenches capitale des Helvètes (Ier s. - IVe s. apr. J.-C.) Suisse, canton de Vaud
2010
This first synthesis concerns the animal bones, discovered since 1975 in Aventicum, the capital of Roman Switzerland. It is supported by the analysis of several residential districts, public sectors and suburbs, which represent five hundred chronological complexes and 74000 animal bones, dated from the Ist, to the IVth Century AD. During these centuries, Aventicum was incorporated to the Roman province of Gallia Belgica, then was raised to the status of a colonia and finally declined with the Empire.The analysis of bones was made to study various mutations which occurred during the occupation of the city. They include an improvement of breeding techniques, a new internal city organisation, …
Chemical Pretreatments of Wood Chips Prior to Alkaline Pulping - A Review of Pretreatment Alternatives, Chemical Aspects of the Resulting Liquors, an…
2015
The chemical industry is being forced to evaluate new strategies for more effective utilization of renewable feedstocks to diminish the use of fossil resources. In this literature review, the integration of both acidic and alkaline pretreatment phases of hardwood and softwood chips with chemical pulping is discussed. Depending on the pretreatment conditions, high-volume sulfur-free fractions with varying chemical compositions can be produced. In case of acidic pretreatments, the major products include carbohydrates (mono-, oligo-, and polysaccharides), whereas under alkaline (i.e., aqueous NaOH) pretreatment conditions, the sulfur-free fractions of aliphatic carboxylic acids, lignin, and ex…