131 research outputs found
Negotiating Authority: Local Communities in the World Heritage Convention
The Operational Guidelines for the implementation of the World Heritage Convention stipulate that local communities and indigenous peoples are an intrinsic part of the identification, nomination, management and protection of World Heritage sites (UNESCO 2019, art. 12). This paper explores the role of local communities in the World Heritage system by critically assessing the implementation of the Convention in a European context through the case study of the Ironbridge Gorge WHS. The case study is contextualised in the representation of indigenous peoples in World Heritage policies negotiating their intellectual and legal authority in the World Heritage process facilitated through heritage bureaucracy. This paper will address the internationally important issue of power relations when it comes to the inclusion of local communities and indigenous peoples in the World Heritage Convention and in heritage practice
Phalaenopsis CULTIVATION IN DIFFERENT MEDIA. PART I. GROWTH AND FLOWERING
The production costs force the orchids growers to look for media that could become an alternative for the basic ones. Phalaenopsis plants (ex in vitro) were planted into containers filled with different media: New Zealand sphagnum moss, mixture of expanded clay pellets and New Zealand sphagnum moss (v:v = 1:1) and expanded clay pellets. Originally, orchids were grown in translucent plastic pots of 7 cm diameter (8,5 months) and then, they were transferred to translucent plastic pots of 11 cm diameter and 0.5 dm3 capacity. Effect of medium on the size of plant, hydratation of leaves tissue and flowering was evaluated. Orchids grown in New Zealand sphagnum moss create a significantly greater mass of the aboveground plant part and the roots. Also parameters characterizing the inflorescence and flowers indicate that the most favorable for the orchids is to grow them in sphagnum moss. The least favorable growth conditions were provided by thegrowing in expanded clay pellets without any additions. In this medium, only 25 to 35% of plants flowered
Nanoscale Ordering of Coordination Compound and Networks at Solid Surfaces
Tesis doctoral inédita. Universidad Autónoma de Madrid. Facultad de Ciencias. Fecha de lectura: 17-12-201
THE EFFECT OF AMOUNT OF LIGHT AND THE TEMPERATURE ON BIOMORPHOLOGICAL CHARACTERISTICS OF CHRYSANTHEMUMS DURING ALL-YEAR CULTURE
The ornamental value of chrysanthemums grown all year round is affected by climatic conditions. Publications describing quality of chrysanthemum usually refer only to selected climatic parameters and selected features of chrysanthemums. The aim of the present paper is a complete presentation of the problem. Two spray cultivars were cultivated in spring, summer, autumn and winter. To assess the strength and direction of a linear relationship between temperature (day, night, daily) or light (PAR) and biomorphological features, correlation coefficients (r) were calculated. Amount of light have a significant positive effect on the quantity of fresh mass of chrysanthemum and leaf area index (LAI). Light acted in a slightly smaller degree on increments of the main shoot, leaf area and relative chlorophyll content in leaves. Among examined temperatures the greatest influence has sum of day temperature. The temperature exerted a significantly positiveeffect on the quantity of fresh mass of chrysanthemum, the increments of the main shoot and the relative chlorophyll content in leaves. All biomorphological features are less positively correlated to sum of night and sum of daily temperatures. However, these characteristics are more depending on the amount of light rather than temperature
“When the heritage came” world heritage and local communities through the prism of Ironbridge Gorge
Exploring the role of local communities in the identification and subsequent management of World Heritage Sites (WHS) is particularly relevant, as it is not clear how to define local communities and how they can be included in the World Heritage process, which was initially designed for professionals.
This thesis adopts two concepts – cognitive ownership and Outstanding Universal Value (OUV) – as overarching frameworks in an attempt to address the gap in research on communities and World Heritage and to bring new knowledge to the field.
An overview of global representations of communities in the literature in the contexts of authenticity, integrity, management and OUV is complemented by a review of developments pertaining to the inclusion of communities within the World Heritage discourse, based on archival research at ICOMOS Paris, IUCN Gland, ICCROM Rome and on the study of World Heritage Centre decisions.
The aim of this research is two-fold. It explores global representations of communities through the prism of self-defined communities in Ironbridge Gorge. The application of the cognitive ownership model in identification of communities at the micro level bring knew knowledge about the role of communities in the World Heritage process, both at the global and local level. The microcosm of Ironbridge gives an insight into how communities absorb, negotiate and transmit the concept of OUV
Phalaenopsis CULTIVATION IN DIFFERENT MEDIA. PART II. NUTRIENTS AND CHLOROPHYLL CONCENTRATION IN LEAVES AND ROOTS
Effect of growing media on macro- and microelements, as well as on chlorophyll concentration in Phalaenopsis orchids were investigated. In the years 2006–2008,an experiment on Phalaenopsis orchids cultivation was carried out. The plants were planted into New Zealand sphagnum moss, mixture of expanded clay pellets and New Zealand sphagnum moss (v:v = 1:1), or into expanded clay pellets only. Orchids were grown in translucent plastic pots. Total macro and micro elements concentration in leaves and roots were determined. Furthermore concentrations of chlorophyll a and chlorophyll b in leaves and roots were measured. Growing media exert a significant influence on the nutritional status of Phalaenopsis orchids. The highest concentration of magnesium, iron and copper was found in plants grown in expanded clay, less in orchids grown in the mixed medium and the least in plants grown in sphagnum moss. A higher concentration of nitrogen, phosphorus, potassium, calcium and manganese was found in leaves. Inversely, in roots, there was a higher concentration of magnesium, iron and zinc. Growingmedia did not affect chlorophyll concentration in leaves and roots of Phalaenopsis
Optimization of mechanical properties of Cr3C2-Ni20Cr/graphite cold sprayed coatings
This study analyzed the mechanical properties of cold-sprayed Cr3C2-25(Ni20Cr) blended
with Ni-graphite as a solid lubricant deposited on 7075 aluminum alloy substrate. To optimize
the coating properties, different sets of parameters (graphite content in feedstock, process gas
composition, spraying distance, and traverse gun speed) were tested in the frame of the Taguchi
experiment. The cold-sprayed coatings were evaluated for their chromium carbide and graphite
content, hardness, and coefficient of friction. Analysis of the microstructure of the deposited coatings
revealed that graphite as a soft and brittle component fills all voids in the coating and its quantity
depends on its content in the feedstock. The experimental results show that the composition of the
process gas has the greatest impact on the Cr3C2 content in the coating and the proportion of graphite
in the sprayed blend directly affects its hardness. In the case of the coefficient of friction, the most
significant parameters were the graphite content in the sprayed blend, the spraying distance, and
process gas composition. The conducted verification experiment with the optimum parameter values
allowed a coating with the highest hardness and the lowest coefficient of friction to be obtained
Hypervariability within the Rifin, Stevor and Pfmc-2TM superfamilies in Plasmodium falciparum
The human malaria parasite, Plasmodium falciparum, possesses a broad repertoire of proteins that are proposed to be trafficked to the erythrocyte cytoplasm or surface, based upon the presence within these proteins of a Pexel/VTS erythrocyte-trafficking motif. This catalog includes large families of predicted 2 transmembrane (2TM) proteins, including the Rifin, Stevor and Pfmc-2TM superfamilies, of which each possesses a region of extensive sequence diversity across paralogs and between isolates that is confined to a proposed surface-exposed loop on the infected erythrocyte. Here we express epitope-tagged versions of the 2TM proteins in transgenic NF54 parasites and present evidence that the Stevor and Pfmc-2TM families are exported to the erythrocyte membrane, thus supporting the hypothesis that host immune pressure drives antigenic diversity within the loop. An examination of multiple P.falciparum isolates demonstrates that the hypervariable loop within Stevor and Pfmc-2TM proteins possesses sequence diversity across isolate boundaries. The Pfmc-2TM genes are encoded within large amplified loci that share profound nucleotide identity, which in turn highlight the divergences observed within the hypervariable loop. The majority of Pexel/VTS proteins are organized together within sub-telomeric genome neighborhoods, and a mechanism must therefore exist to differentially generate sequence diversity within select genes, as well as within highly defined regions within these genes
Merozoite release from Plasmodium falciparum-infected erythrocytes involves the transfer of DiIC16 from infected cell membrane to Maurer’s clefts
Merozoite release from infected erythrocytes is a complex process, which is still not fully understood. Such process was characterised at ultra-structural level in this work by labelling erythrocyte membrane with a fluorescent lipid probe and subsequent photo-conversion into an electron-dense precipitate. A lipophilic DiIC16 probe was inserted into the infected erythrocyte surface and the transport of this phospholipid analogue through the erythrocyte membrane was followed up during 48 h of the asexual erythrocyte cycle. The lipid probe was transferred from infected erythrocyte membranes to Maurer’s clefts during merozoite release, thereby indicating that these membranes remained inside host cells after parasite release. Fluorescent structures were never observed inside infected erythrocytes preceding merozoite exit and merozoites released from infected erythrocyte were not fluorescent. However, specific precipitated material was localised bordering the parasitophorous vacuole membrane and tubovesicular membranes when labelled non-infected erythrocytes were invaded by merozoites. It was revealed that lipids were interchangeable from one membrane to another, passing from infected erythrocyte membrane to Maurer’s clefts inside the erythrocyte ghost, even after merozoite release. Maurer’s clefts became photo-converted following merozoite release, suggesting that these structures were in close contact with infected erythrocyte membrane during merozoite exit and possibly played some role in malarial parasite exit from the host cell
Influence of holding parameters in the bainite range on the location of Ms temperature and the volume fraction of reained austenite
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