• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 37
  • 9
  • 7
  • 7
  • 5
  • 3
  • 2
  • 1
  • 1
  • 1
  • Tagged with
  • 90
  • 13
  • 12
  • 10
  • 10
  • 9
  • 9
  • 8
  • 7
  • 7
  • 7
  • 6
  • 5
  • 5
  • 5
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
21

Mass and attribute analysis of the quartz lithic assemblage from the Grandfather Quarry (HbMd-4), near Granville Lake, Northern Manitoba

Beardsell, Robert J. 09 September 2013 (has links)
Quarries are fixed locationally, whereas most seasonally abundant food resources in northern latitudes are not. Toolstone procurement must therefore be ‘factored in’ to other resource procurement strategies. As sources of useable toolstone, quarries are the logical starting point for the study of how stone tool-using societies organized their technologies in accordance with their subsistence and social needs. Yet they have often been ignored by archaeologists because of the logistical problems presented by their typically enormous and variable assemblages. Quartz differs from more common, crypto-crystalline raw materials such as chert, flint or chalcedony. It is harder, more brittle, and has different fracture properties. It is less common archaeologically than crypto-crystalline toolstone, and archaeologists tend to either avoid quartz assemblages altogether, or to automatically and uncritically analyze them in the same manner as crypto-crystalline toolstones without considering their different properties. The Grandfather Quarry (HbMd-4) offers an opportunity to address these problems at once. Using Lithic Technological Organization theory, a mass analysis (after Ahler 1989), modified and combined with an attribute analysis, demonstrates that this method is a useful tool for examining large, complex assemblages such as those found in quarry sites. While more time-consuming and labour-intensive than a standard mass analysis, the modified version allows for the collection of a large number of attribute data that lend robusticity to the results and provide academic rigour. This research also demonstrates that quartz assemblages can indeed be examined using the same methods as for other raw materials, provided the unique properties of quartz as a toolstone are considered. It is shown that although the overall quality of toolstone from this source is quite poor, the Grandfather Quarry was likely the only reliable source, or at least one of a very few reliable sources, of quartz toolstone in the Churchill River Basin. All useable toolstone was intensively exploited, but rare nodules of higher quality quartz were set aside for in situ reduction into cores, tools and bifaces. Lastly, the unexpected discovery of microblade technology at the quarry opens new avenues for future research in the northern Manitoba Boreal Forest.
22

Společenstvo epigeických brouků aktivního vápencového lomu / Insect community structure and insect biodiversity in active limestone quarry

TULACHOVÁ, Marie January 2014 (has links)
We focused on the study of epigeic beatles living in a lime pit Černý Důl. This locality is situated in the buffer-zone of Natural park of Krkonoše - 7 km far from Vrchlabí. We used e method of falling traps. We chosed non-toxical solution of NaCl as a preservative medium because of the lokality characteristics. The traps were put on a upper part of the pit. We put traps on the three of five chosen localities. 50 traps could be found on each of these three localities. We caught 2024 individuals of the order Coleoptera. These families were most abundant: (1825 pc), Silphidae (158 pc) and Staphylinidae (24 pc). 726 individuals were caught on the locality number 0, 813 on the locality number 1, and 485 on the locality number 2. The most abundant species were: Pterostichus melanarius (529 pc), Abax parallelepipedus (455 pc) and Abax ovalis (339 pc). We found 11 eurotype species, 17 antropogenic species, and 1 relict species (Cychrus attenuatus). We computed an index of antropogenic influence (ISD) on the Carabidae species. The ISD value was 34.74, which means that beatles are influenced. Platydracus stercorarius (6 pc) was the most abundant species of family Staphylinidae and Nicrophorus vespilloides (100 pc) was the most abundant species of the family Silphidae.
23

Awaiting water

Nordblad, Sofia January 2022 (has links)
There is a limestone quarry on Öland that was active between 1888 and 2019.  Now that Cementa has ceased mining, the quarry is about to be naturally flooded with rainwater and infiltrating groundwater. In 20 years from now, the water level will be 5 meters higher than today.  As a final proposal I present a multifunctional visitor’s center placed on a peninsula that will eventually transform into an island. The quarry is popular amongst birds and the observation tower makes it possible to study them closely. The exhibition hall can show work from Öland’s many artists and the flexible square can host everything from yoga classes to dance nights. A small kiosk sells ice cream and sandwiches. The changing booths, lockers, restrooms and saunas enable you to enjoy this place in every season, protected from the sometimes very rough elements that is Öland’s signature. For each year the water level will rise and create a new experience, even for returning visitors. When the surface has reached its highest point in the 2040’s, the center will appear floating on the water surface and welcome you on a path framed with casted stone walls pushing the water aside.
24

Soundscape, Lom Hády / Soundscape, Lom Hády

Kolcunová, Pavlína January 2012 (has links)
The concept of the thesis is based on the phenomenon of Soundscape. This term was defined during the late 1960s at the occasion of The World Soundscape Project. The image of the acoustic comfort was redefined - from the level of noise pollution to the question of the sonic environment. The contribution of the project lies in the rehabilitation of the importance of sound as a cultural and social phenomenon, which shapes the identity of the place. Since the area of sound research is very large, the theoretical part of the thesis focuses on the description of the auditory perception from the psychological and physical aspects. It's a description of objective and subjective "events", that on the one hand, it appears as a set of physical quantities, on the other side as auditory scene, which provokes the questions how are the different sounds connected, which meanings are associated by the perceived sound, etc. Sources of inspiration, drawing from nonarchitectonic overlaps ( such as poetic acoustic locators or sound installations ) are another starting point for exploring the properties of sounds. The work on a specific issue was preceded by the searching of the accurate place, that is essentially acontextual to the surrounding environment. Landscape character of the quarry Hady reminds a desert, it has a few specified sites, it‘s monotonous land with varying degrees of openness and closeness. The environment of the quarry generates diverse "soundcapes" and also reflects the sound milieu of the surrounding landscape, which becomes the object of manipulation. situation Quarry Hady is one of the dominant landmarks of Brno - scarred face of the hilll and broadcasting tower are visible from miles around, and after mining mechanisms quit, the quarry is turning back to nature. There is a natural reservation Velka Klajdovka and Kavky in close proximity - thanks to the fact grows up to thirty kinds of endangered plants in the lower part of quarry called Růženin lom. The location is easily accessible on foot or by bike ( hiking trail Velká Klajdovka - Šumbera goes through the quarry) or with public transportation within walking distance of 800m. The parking lot with 25 spaces is situated near to turn-off Kanice towards quarry area.
25

Environmental compliance in quarrying operations: a computer-based decison support system

Woofter, Christopher L. 13 February 2009 (has links)
Quarry operators must continue to change and adapt environmental compliance methods to meet increasingly demanding regulations. To fulfill industry needs, a computer-based decision support system has been developed to facilitate legal and environmental decisions that mine operators are required to make with regards to stormwater. The comprehensive stormwater programming provides a model for subsequent programming in areas of environmental concern such as: air, groundwater, noise, aesthetics, vegetation, wetlands, hazardous wastes, storage tanks, and wildlife habitats. Operators will utilize the system's user-friendly interface consisting of mouse driven responses and limited keyboard entries on a desktop computer. The system is easy to upgrade according to the user's needs and changes in current laws and regulations. Data input models, user interfaces, and support of decision making are explained. Using this approach, the user has complete control over all steps of the decision making process. A stormwater example is selected to demonstrate the potential benefits of the support system to environmental decision makers. / Master of Science
26

High density urban form: a case study of Quarry Bay, Hong Kong

徐漢榕, Tsui, Hon-yung. January 1996 (has links)
published_or_final_version / Urban Design / Master / Master of Urban Design
27

Land reclamation by reindeer lichens : On the complexity of substrate and reindeer grazing on Cladonia spp. dispersal

Godeau, Christine January 2019 (has links)
Reindeer lichens are on a dramatic decline in Sweden, with a 71 % decrease in abundance over the last 60 years. Reindeer (Rangifer tarandus tarandus L.) management, undertaken by indigenous Sámi people, depend upon extensive winter grazing grounds with abundant reindeer lichen cover. The objective of this pilot study is to restore the ecosystem function of reindeer winter grazing in post-industrial environments, by developing an artificial dispersal program of reindeer lichen thalli. This study is performed in co-operation with the mining corp. of LKAB and in consultation with Laevas reindeer herding district. There are two components to this study: I) a comprehensive literature review of indigenous and scientific knowledge regarding reindeer winter grazing and artificial reindeer lichen dispersal; and II) a field assessment of relationships between fructiose lichen occurrence and environmental variables within a coarse grid overlapped on a mosaic of vegetation patches in various successional stages, which cover part of a 28-year old abandoned quartzite heap. My findings validate that a well-drained substrate with a thin humus layer or barren ground together with the occurrence of bryophytes (not Sphagnum spp.) had the highest abundance of fructiose lichens. In contrast, abundant organic soil layer, high soil moisture, and extensive cover of graminoids and herbs showed low abundance of fructiose lichens. I conclude that reindeer lichens are indeed present in a few findings but are still facing environmental and dispersal limitations to become abundant. These limitations can be understood in the light of moisture regimes, instability or compaction of substrate, and limitations within the colonization-pool, and are further discussed with suggested revegetation implementations.
28

Technicko-ekonomická studie Mramorové lomy Ujčov / Feasibility study - Marble quarries Ujčov

Čochner, Lukáš January 2011 (has links)
The diploma thesis tries to introduce possibilities of marble mining in moravian locality of Ujčov on the basis of feasibility study. Background of the practical part of the work is built on expert opinions on the stone resources, experts in the field consultations and communication with potential suppliers. The study results into a preliminary financial plan of the project, which quantifies reached conclusions. The text also considers possible ventures. The thesis also aims to be a base for a business plan.
29

Digitizing Dinosaur National Monument's Carnegie Quarry

Esplin, Rebecca 01 December 2017 (has links)
The Carnegie Quarry in northeastern Utah is world-renowned for the dinosaur skeletons it has produced and for its in situ display of dinosaur bones. The specimens excavated at Carnegie Quarry are displayed and curated in 20 repositories, most in North America. Data on these specimens in the forms of notes, photographs, publications, field maps, and so on, are scattered in an array of formats and institutions. The primary goal of this thesis is to develop a database linking these data with a digital map (GIS system) to make them readily accessible. To this end, a relational database was created using Microsoft Access linked to a vector-based map developed using Avenza MAPublisher running in Adobe Illustrator. Analyzing these data, the Carnegie Quarry produced 4146 specimens representing at least 105 individuals pertaining to 18 genera; 12 dinosaurs, one crocodylomorph, two turtles, Unio utahensis (a freshwater clam), and one plant. The map is based on high resolution photographs of the current quarry face merged with historic maps of previously excavated portions of the quarry. Previous attempts to develop a complete map were hindered by the large number of maps, primarily from four institutions that excavated at the site, and the lack of an accurate map of the current quarry face (due to substantial relief, the 67° dip of strata, and the lack of a permanent grid). The new maps will provide invaluable insights into the depositional setting, taphonomy and paleoecology of the site. The map and database provide a single access point for data on specimens from 20 widely dispersed repositories linking them their original quarry positions. This expandable tool will be invaluable to scientists and the caretakers of Dinosaur National Monument and is recommended for adoption at other quarries.
30

Investigation Of Tuff Quarries Around The Temple Of Apollon Smintheus (canakkale, Turkey)

Ergenc, Duygu 01 September 2011 (has links) (PDF)
Studies to determine the location of antique quarries, from where building stones were obtained, are done by comparison of the properties of antique stones and the possible quarry sources around them. In the case when no stonemason marks exists, geologic formations that may be used as building stone should be investigated and properties of antique building stones and geologic formations should be correlated. The aim of this study was the investigation of tuff quarries that could be the source of tuffs used in the construction of Apollon Smintheus Temple. For this purpose, the studies were carried out about the geology of the region, and possible three quarries selected around Smintheion. Durability properties of stones in Temple and quarries were determined with the analyses of physical, physico-mechanical properties and artificial weathering tests of wetting-drying, salt crystallization / Effective porosity, bulk density, water absorption capacity, dry and saturated unit weight, salt content, ultrasonic pulse velocity, modulus of elasticity, uniaxial compressive strength, pore size distribution, capillary absorption and moisture absorption capacities were determined for Temple tuffs and possible quarry tuffs in fresh and artificial weathering cycles. Microstructural investigations were done by mineralogical, petrographical and chemical analyses which were optical microscopy, stereomicroscopy, XRD, SEM, FTIR, MBA and XRF. The results indicated that Temple tuffs and two of the three quarries (Fatma Gerdan and Kizilke&ccedil / ili) had similar engineering geological and micrstructural properties. Therefore, they could be used as building stone during the construction of Temple.

Page generated in 0.0494 seconds