Search results for "Wood"
showing 10 items of 818 documents
Isotopic signals from Callovian–Kimmeridgian (Middle–Upper Jurassic) belemnites and bulk organic carbon, Staffin Bay, Isle of Skye, Scotland
2009
Abstract: The stable isotope data presented here significantly extend and expand upon previous isotopic investigations of the Middle to Late Jurassic interval. The belemnite samples collected from the Staffin Bay and Staffin Shale formations from the Isle of Skye, Scotland, yielded oxygen isotope values consistent with Callovian–Kimmeridgian palaeotemperatures of 6.7–20.6 °C. The carbon isotope data comprise one of the first moderately high-resolution investigations of the relationship between terrestrial δ 13 C org (predominantly fossil wood debris) and marine δ 13 C carb (belemnites) as derived from a geologically coeval record. The Staffin Bay data reveal a broad Early to Mid-Oxfordian p…
A tractor mounted scanning LIDAR for the non-destructive measurement of vegetative volume and surface area of tree-row plantations: A comparison with…
2009
The use of a low-cost tractor-mounted scanning Light Detection and Ranging (LIDAR) system for capable of making non-destructive recordings of tree-row structure in orchards and vineyards is described. Field tests consisted of several LIDAR measurements on both sides of the crop row, before and after defoliation of selected trees. Summary parameters describing the tree-row volume and the total crop surface area viewed by the LIDAR (expressed as a ratio with ground surface area) were derived using a suitable numerical algorithm. The results for apple and pear orchards and a wine producing vineyard were shown to be in reasonable agreement with the results derived from a destructive leaf sampli…
Inter-organizational networks and innovation in small, knowledge-intensive firms: A literature review
2013
Published version of article from the journal: International Journal of Innovation Management In this study, we address the effect of innovation strategy and an innovative working climate on financial performance in the Norwegian wood industry. Innovation strategy embodies four dimensions: the degrees to which innovation in the form of products, processes, and business systems are embedded in the management values and priorities as well as the degree of expenditure in R&D. An innovative working climate is exemplified by team cohesion, supervisory encouragement, resources, autonomy, challenge, and openness to innovation. Previous studies have indicated a lack of research in traditional manuf…
Supply and uses of wood in Auvergne, from the Iron Age in the Middle Ages
2018
Waterlogged woods are rare discoveries in archeology because of the conditions inherent in their conservation. When they reach us, they give a lot of data on the importance of this material for past populations.Auvergne is a privileged context for their conservation. Thousands of woods from fortuitous discoveries or archaeological excavations are dated from the Neolithic to the modern era, however the corpus covers mostly the Second Iron Age until the Middle Ages.The diversity of the woods enables a better understanding of different uses according to their respective destination.The state of conservation of many elements gives information about the different stages of shaping, from the fell…
What do we know about growth of vessel elements of secondary xylem in woody plants?
2021
Despite extensive knowledge about vessel element growth and the determination of the axial course of vessels, these processes are still not fully understood. They are usually explained as resulting primarily from hormonal regulation in stems. This review focuses on an increasingly discussed aspect - mechanical conditions in the vascular cambium. Mechanical conditions in cambial tissue are important for the growth of vessel elements, as well as other cambial derivatives. In relation to the type of stress acting on cambial cells (compressive versus tensile stress) we: (i) discuss the shape of the enlarging vessel elements observed in anatomical sections; (ii) present hypotheses regarding the …
Lifestyle dependent occurrence of airborne fungi
2018
Abstract. Fungi play important roles in the environment, agriculture, and human health. Most fungal species spread by wind-driven dispersal of spores, determining their occurrence and distribution in different environments. The dynamics of airborne fungi and their dependence on lifestyle and environmental conditions, however, are not well characterized. Here, we categorize the fungi detected in coarse and fine aerosol samples from continental boundary layer air using a lifestyle classification scheme that differentiates whether the fungi are (A) primarily associated to herbaceous or woody plants and (B), whether they are saprophytic, plant pathogenic, or surface inhabitants. Herbaceous fung…
Approche géographique des approvissionnements en plaquettes foréstières des chaufferies du secteur collectif/tertiaire : application au Pays Loue-Lis…
2011
In a context of strong increase of fuelwood demand in the collective sector, the supply issue becomes central to all stakeholders, raising many issues relating to land and forestry planning, local development, environment ... Meanwhile, questions emerge: how much energy can be mobilized sustainably? Does the spatial and structural configuration of forests influence the supply process? Do we seek to minimize transport distances? Can we observe spatial competition between the boilers ? To understand the current organization of supplies, we analyzed two sets of data traceability of wood chips. Then, we have developed a model of local supply basins, considering constraints of renewability of th…
En alas de la danza: Miami Vice y el relato terminal
1989
La televisión ha logrado en Miami Vice (aunque esta solución probablemente será compaginada con otras muchas) realizar un sueño y una paradoja cruel: un relato que no es itinerario, vacío de trayecto, un relato que avanza tanto más frenéticamente cuanto que no se dirige a ningún sitio, porque su punto de llegada está en cada explosión, en cada unidad, idealmente tan pequeña, tan minúscula como los microchips de que se compone la tecnología punta. No es casual -y vale la pena exagerar un poco- que la metáfora del cosmos en formación aflore en algún episodio de la serie. Una galaxia en formación que recuerda vagamente aquellos Lone Drivers de los últimos spots publicitarios de automóviles. "T…
Fundamentos de la obra cinematográfica de Clarence Brown : inicios y consolidación estilística en el contexto del cine clásico norteamericano entre l…
2012
Esta tesis tiene por objeto el estudio del legado artístico del director y productor cinematográfico Clarence Brown (1890-1987), quien desarrolló su actividad desde 1915 hasta 1953, primero en Fort Lee, New Jersey, y posteriormente en Hollywood. Su corpus fílmico, por lo tanto, comprende parte del cine “silente” y “sonoro” norteamericano. Aunque Brown se formó junto a uno de los grandes pictorialistas de la era “silente”, el realizador de origen francés Maurice Tourneur, y la calidad y originalidad de su obra han sido reivindicadas por reputados historiadores como Kevin Brownlow y William K. Everson, en la actualidad continúa siendo un cineasta olvidado, injustamente relegado por la Histori…
El didactismo clásico de Hitchcock y la crisis de Hollywood
1989
Los films de Alfred Hitchcock abren una problemática que es a la historia a quien interesan y, sólo por esto, sus investigaciones representan la avanzadilla del cine americano durante casi dos décadas. Más tarde, cuando se produzca la revolución tecnológica de comienzos de los sesenta, cuando las escrituras europeas consigan dejar su impronta en el cine mundial, cuando los experimentos underground comiencen a reclamar un pequeño espacio, entonces la representatividad de ' Hitchcock para la historia del cine deberá ceder su lugar. Sus trabajos a partir de aquel momento serán -que nos perdone el hitchcockiano impenitente- irrelevantes para la historia. Sus obras a partir de 1963 podrán ser al…