Time consumption analysis of the mechanized cut-to-length harvesting system

[Abstract]

Comparison of short-wood forwarding systems used in Iberia

Abstract

Toimintokohtaisen kustannuslaskennan soveltaminen puunkorjuu- ja puunkuljetusoperaatioissa

Seloste artikkelista: Applying the activity-based costing to cut-to-length timber harvesting and trucking / Tuomo Nurminen, Heikki Korpunen & Jori Uusitalo. - Julkaisussa: Silva Fennica 43 (2009) : 5, s. 847-870.

Indirect population dynamic benefits of altered life-history trade-offs in response to egg harvesting

Variations in demographic rates due to differential resource allocation between individuals are important considerations in the development of accurate population dynamic models. Systematic harvesting can alter age structure and/or reduce population density, conferring indirect positive benefits on the source population as a result of a consequent redistribution of resources between the remaining individuals. Independently of effects mediated through changes in density and competition, demographic rates can also be influenced by within-individual competition for resources. Harvesting dependent life stages can reduce an individual's current reproductive costs, allowing increased investment in its future fecundity and survival. Although such changes in demographic rates are well known, there has been little exploration of the potential impact on population dynamics. We use empirical data collected from a successfully reintroduced population of the Mauritius kestrel Falco punctatus to explore the population consequences of manipulating reproductive effort through harvesting. Consequent increases in an individual's future fecundity and survival allow source populations to withstand longer and more intensive harvesting regimes without being exposed to an increase in extinction risk, increasing maximum sustainable yields. These effects may also buffer populations against the impacts of stochastic events, but directional shifts in environmental conditions that increase reproductive costs may have detrimental population-level effects.

A indústria de produção e comercialização de papel cut to size no Brasil : estudo de caso : estudo de caso sobre o grau de aplicabilidade das técnicas de resposta eficiente ao consumidor (ecr) na cadeia de distribuição de uma indústria de produção de papel cut to size no Brasil

Esta dissertação estuda, por meio do uso da ferramenta Globalscorecard, a relação entre o movimento resposta eficiente ao consumidor (ECR) e a indústria brasileira de papéis cut to size, tendo como base o caso da cadeia de distribuição composta por uma indústria e dois distribuidores de papéis cut to size no Brasil. O caso está estruturado com base em dados e informações coletadas em pesquisas, artigos, publicações e nas empresas, objeto do estudo. A metodologia utilizada é a análise de casos. Também está analisada, à luz do ECR, a questão da colaboração e da eficiência na cadeia de distribuição. Ao final, são feitos comentários e considerações acerca dos resultados obtidos, recomendações para as empresas envolvidas e sugestões para futuros estudos acadêmicos nessa área.

An alternative technique to the harvesting of a connective tissue graft from a thin palate: Enhanced wound healing

This article describes an alternative surgical approach to the harvesting of subepithelial connective tissue grafts from thin palates. A partial-thickness flap is raised, and a graft composed of epithelium and connective tissue is removed from the palate. The superficial layer ( epithelium and a thin zone of connective tissue) is then dissected from the graft and replaced at the donor site to facilitate faster healing. The subjacent layer of connective tissue is placed as needed to obtain root coverage. The clinical application of this technique is described in two patients with multiple gingival recessions.

Análise de extração de madeira de eucalipto com forwarder em floresta de primeira e segunda rotação

Pós-graduação em Agronomia (Energia na Agricultura) - FCA

Fruit firmness and skin resistance of processing tomato varieties tested in Badajoz (Spain), related to mechanical harvesting.

Determinations of resistance to damage were carried out in a total of 31 tomato varieties for processing, with the purpose of choosing the most suitable ones for mechanical harvesting. The characteristics studied include: puncture, deformation and rupture of the fruits, the ease of detachment of the fruits also being determined. Seventeen varieties were chosen, for further tests, with values 0.76 to 1.7 2 N of resistance to puncture; 3 to 9 N/mm of resistance to compression and 2.16 to 29.40 N resistance to detachment.

Differential Control of Xanthophylls and Light-Induced Stress Proteins, as Opposed to Light-Harvesting Chlorophyll a/b Proteins, during Photosynthetic Acclimation of Barley Leaves to Light Irradiance

Barley (Hordeum vulgare L.) plants were grown at different photon flux densities ranging from 100 to 1800 μmol m−2 s−1 in air and/or in atmospheres with reduced levels of O2 and CO2. Low O2 and CO2 partial pressures allowed plants to grow under high photosystem II (PSII) excitation pressure, estimated in vivo by chlorophyll fluorescence measurements, at moderate photon flux densities. The xanthophyll-cycle pigments, the early light-inducible proteins, and their mRNA accumulated with increasing PSII excitation pressure irrespective of the way high excitation pressure was obtained (high-light irradiance or decreased CO2 and O2 availability). These findings indicate that the reduction state of electron transport chain components could be involved in light sensing for the regulation of nuclear-encoded chloroplast gene expression. In contrast, no correlation was found between the reduction state of PSII and various indicators of the PSII light-harvesting system, such as the chlorophyll a-to-b ratio, the abundance of the major pigment-protein complex of PSII (LHCII), the mRNA level of LHCII, the light-saturation curve of O2 evolution, and the induced chlorophyll-fluorescence rise. We conclude that the chlorophyll antenna size of PSII is not governed by the redox state of PSII in higher plants and, consequently, regulation of early light-inducible protein synthesis is different from that of LHCII.

Terry's short cut to Spanish; a new, easy, and quick method for learning the Spanish language as spoken in Spanish-America and in Spain, combined with a pronouncing phrase book for travelers in Spanish-speaking countries,

Includes bibliographies and index.

Merit, red rock, and potomac : tomato varieties adapted to mechanical harvesting /

Mode of access: Internet.