Bibliografie tematiche / Rocks

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Letteratura scientifica selezionata sul tema "Rocks"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 30 luglio 2024

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Articoli di riviste sul tema "Rocks"

Noma, Kensuke, Naotsugu Oyama e James K. Liao. "Physiological role of ROCKs in the cardiovascular system". American Journal of Physiology-Cell Physiology 290, n. 3 (marzo 2006): C661—C668. http://dx.doi.org/10.1152/ajpcell.00459.2005.

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Rho-associated kinases (ROCKs), the immediate downstream targets of RhoA, are ubiquitously expressed serine-threonine protein kinases that are involved in diverse cellular functions, including smooth muscle contraction, actin cytoskeleton organization, cell adhesion and motility, and gene expression. Recent studies have shown that ROCKs may play a pivotal role in cardiovascular diseases such as vasospastic angina, ischemic stroke, and heart failure. Indeed, inhibition of ROCKs by statins or other selective inhibitors leads to the upregulation and activation of endothelial nitric oxide synthase (eNOS) and reduction of vascular inflammation and atherosclerosis. Thus inhibition of ROCKs may contribute to some of the cholesterol-independent beneficial effects of statin therapy. Currently, two ROCK isoforms have been identified, ROCK1 and ROCK2. Because ROCK inhibitors are nonselective with respect to ROCK1 and ROCK2 and also, in some cases, may be nonspecific with respect to other ROCK-related kinases such as myristolated alanine-rich C kinase substrate (MARCKS), protein kinase A, and protein kinase C, the precise role of ROCKs in cardiovascular disease remains unknown. However, with the recent development of ROCK1- and ROCK2-knockout mice, further dissection of ROCK signaling pathways is now possible. Herein we review what is known about the physiological role of ROCKs in the cardiovascular system and speculate about how inhibition of ROCKs could provide cardiovascular benefits.

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Zhang, Jin Yu, Huan Sheng Dong, Reza K. Oqani, Tao Lin, Jung Won Kang e Dong Il Jin. "Distinct roles of ROCK1 and ROCK2 during development of porcine preimplantation embryos". REPRODUCTION 148, n. 1 (luglio 2014): 99–107. http://dx.doi.org/10.1530/rep-13-0556.

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Cell-to-cell contact mediated by cell adhesion is fundamental to the compaction process that ensures blastocyst quality during embryonic development. In this study, we first showed that Rho-associated coiled-coil protein kinases (ROCK1 and ROCK2) were expressed both in porcine oocytes and IVF preimplantation embryos, playing different roles in oocytes maturation and embryo development. The amount of mRNA encoding ROCK1 and the protein concentration clearly increased between the eight-cell and morula stages, but decreased significantly when blastocysts were formed. Conversely, ROCK2 was more abundant in the blastocyst compared with other embryonic stages. Moreover, immunostaining showed that ROCK1 protein distribution changed as the embryo progressed through cleavage and compaction to the morula stage. Initially, the protein was predominantly associated with the plasma membrane but later became cytoplasmic. By contrast, ROCK2 protein was localized in both the cytoplasm and the spindle rotation region during oocyte meiosis, but in the cytoplasm and nucleus as the embryo developed. In addition, ROCK2 was present in the trophectoderm cells of the blastocyst. Treatment with 15 μM Y27632, a specific inhibitor of ROCKs, completely blocked further development of early four-cell stage embryos. Moreover, we did not detect the expression ofROCK1but did detectROCK2expression in blastocysts. Moreover, lysophosphatidic acid an activator of ROCKs significantly improved the rates of blastocyst formation. These data demonstrate that ROCKs are required for embryo development to the blastocyst stage. Together, our results indicate that ROCK1 and ROCK2 may exert different biological functions during the regulation of compaction and in ensuring development of porcine preimplantation embryos to the blastocyst stage.

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Bayrak, Galyna. "MORPHOLOGIC CLASSIFICATION OF THE BESKIDS ROCKS IN THE UKRAINIAN CARPATHIANS". PROBLEMS OF GEOMORPHOLOGY AND PALEOGEOGRAPHY OF THE UKRANIAN CARPATHIANS AND ADJACENT AREAS, n. 09 (01) (25 settembre 2019): 117–32. http://dx.doi.org/10.30970/gpc.2019.1.2806.

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The article deals with morphological classification of the sandstone rocks in the Ukrainian Carpathians Beskids. By the methods of field measurements and mathematical computations the rock peaks heights, their shape, basement lengths and strata thickness have been calculated. The highest rock peaks in the Beskids amounts 32–37 m. The classification from the morphological point of view on the base of rock forms studying has been done. All rocks are divided in two classes: the rocks-outliers and the rocks-outcrops. Among the rocks-outliers 4 types are defined: spire-shaped, chain-shaped, arc-shaped and combined. Spire-shaped rocks are divided into subtypes: tower, spoke and needle. Among the chain-shaped rocks 3 subtypes are defined: wall, bloc and slab. The rocks of combined form are divided into subtypes: 1) with defined form – those of the rocks which are similar to certain objects and 2) undefined forms (cliffs). Among the rocks-outcrops three types are defined: cliff-shaped, canyon-shaped and angular ones. The class of rocks-outliers occurs most often. Among the types the rocks-towers occur most often. They dominate in the rock formations of Urych, Yamelnytsia and Bubnyshche. Many bloc-shaped and plate-shaped rocks are located on the Kliuch Ridge, in Bubnys’ki Rocks, Yamelnytsia. There are rocks-walls of 50–60 m in Urych and Yamelnytsia. The longest rock-wall in Danylov tract near Yamelnytsia has been investigated. Its length is 150 m and height is 17 m. Some needle and spoke rocks are situated in Bubnys’ki Rocks (Odinets’ Rock, Golets’ Rock) and Urych (Hostryi Kamin’ (Sharp Stone) Rock. Unique types are very rare. For instance: Bronenosets’ Rock in Bubnys’ki Rocks (this rock has shape of sail), Sokil (Falcon) Rock in the Kliuch Ridge, mushroom-shaped rock in Yamelnytsia. There is also unique arc-rock in the Kliuch Ridge. In the class of rocks-outcrops the types of cliff and canyon occur equally. The angular-shaped rocks are rarer. The cliff-shaped rocks are situated near Sokolova Mountain, Pozhernytsia Mountain and Kniazhi (Princes) Rocks near Tyshivnytsia. Unique rocks-canyons, the effects of tectonic breaking and gravity-erosion processes, occur on the Kliuch Ridge. The worked out morphological classification of rocks can be used by ascertaining features of rock morphogenesis with education and scientific purposes as well as by assessment of safety level and protection possibilities. Morphological types of the rocks can be considered as valuable objects of geomorphologic heritage and attractions for geo-tourism. Key words: rocks; morphology type of the rock; rock shape; Beskids of Ukrainian Carpathians.

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Haga, Raquel B., Ritu Garg, Francesca Collu, Bárbara Borda D'Agua, Sofia T. Menéndez, Audrey Colomba, Franca Fraternali e Anne J. Ridley. "RhoBTB1 interacts with ROCKs and inhibits invasion". Biochemical Journal 476, n. 17 (13 settembre 2019): 2499–514. http://dx.doi.org/10.1042/bcj20190203.

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Abstract RhoBTB1 is an atypical Rho GTPase with two BTB domains in addition to its Rho domain. Although most Rho GTPases regulate actin cytoskeletal dynamics, RhoBTB1 is not known to affect cell shape or motility. We report that RhoBTB1 depletion increases prostate cancer cell invasion and induces elongation in Matrigel, a phenotype similar to that induced by depletion of ROCK1 and ROCK2. We demonstrate that RhoBTB1 associates with ROCK1 and ROCK2 and its association with ROCK1 is via its Rho domain. The Rho domain binds to the coiled-coil region of ROCK1 close to its kinase domain. We identify two amino acids within the Rho domain that alter RhoBTB1 association with ROCK1. RhoBTB1 is a substrate for ROCK1, and mutation of putative phosphorylation sites reduces its association with Cullin3, a scaffold for ubiquitin ligases. We propose that RhoBTB1 suppresses cancer cell invasion through interacting with ROCKs, which in turn regulate its association with Cullin3. Via Cullin3, RhoBTB1 has the potential to affect protein degradation.

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Zarraq, Ghazi. "Slope Stability Analysis of the Southwestern Limb of Kosret Anticline in Dokan, Northeastern Iraq". Iraqi Geological Journal 54, n. 2A (31 luglio 2021): 34–48. http://dx.doi.org/10.46717/igj.54.2a.3ms-2021-07-24.

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The stability of the rock slopes was studied on the southwestern limb of the Kosret Anticline in the Dokan Area in northeastern Iraq to analyze and indicate the danger of rock mass failures along the public street linking Dokan and Quesangaq, Erbil and the road which link between the city and the residential neighborhood of Dokan Lake, as well as the revealing and the analysis of the risk of landslides in the slopes and rocks detectors of exposed rocks of the formations in the study area. The stereographic projection was used in the analysis and classification of the rock slopes. This study has shown that the failures of rocks are fall and day lighting bedding plane. The factors that affect the stability of the slopes were assessed. This research mainly focuses on identifying the types of collapses along the rocky slopes and the factor that affects the instability of the studied slopes. It was found that it is the direction slopes and the interruption geometry. Different treatment methods have been proposed for the studied rock base on the rock slope analysis. The expected failure types that may occur along the road are plane sliding, rock fall, toppling, and probably the failure type in the future may be planner sliding due to the angle of the friction comes to zero degree. The rocky slopes along the road require constant monitoring due to their hazardous conditions. Where it was found that the attitude of the joints and their frequency with the relation between the attitude of the slopes and the rock beds played an important role in the failures, as well as the weak rocks of the Marl layers of the Shiranish, Kometan and Tanjero formations play a key role in responding to weathering and erosion factors that increase the failures of rock slopes.

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Sirait, Happy Christin Natalia, e Veni Dewinta. "Petrology and Mineralogy of Metamorphic Rocks in The Pringsewu District, Lampung Province, Indonesia". Journal of Geoscience, Engineering, Environment, and Technology 8, n. 3 (30 agosto 2023): 203–11. http://dx.doi.org/10.25299/jgeet.2023.8.3.11347.

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The origin of metamorphic rock is greatly influenced by the temperature and pressure changes in every tectonic setting, especially in active subduction margins. One of the wide outcrops of metamorphic rock occurs in the Pringsewu District, Lampung, and it is a part of the Palaeozoic Gunung Kasih Complex. The presence of metamorphic rocks in Pringsewu has raised several questions and debates for some time due to the lack of research and field evidence found in this area, especially, since the origin of metamorphic rock in Lampung has been rarely studied. This research aims to determine the metamorphic rock facies and the tectonic setting underlying the formation of metamorphic rocks in the study area. Petrographic analysis on 19 thin-section samples shows that metamorphic rock in the research area can be divided into two regions i.e., western and eastern regions. The Eastern part is characterized by muscovite-epidote schist and greenschist which consist of quartz, muscovite, actinolite, epidote, and garnet as index minerals. Whereas the western part is characterized by quartzite and biotite-epidote schist that consist of quartz, biotite, and muscovite. Based on the mineral index, metamorphic rock’s protoliths are pelitic rock, mafic rock, and quartz-feldspathic sandstone. The metamorphic rock zonation shows the created temperature is from 280-550oC. The foliation structure such as schistose and porphyroblastic texture in the whole rocks sample indicated that metamorphic rocks are created in medium-grade metamorphism and are characterized by the greenschist facies to epidote-amphibolite facies. The abundance of quartz, k-feldspar, and labradorite minerals show that metamorphic rocks came from the microcontinent which was caused by a collision between the intra-oceanic Woyla plate and West Sumatra microcontinent in the Cretaceous. Indications of tectonic activity that create the lithology in Lampung Province need more geological study, especially to determine the absolute age of the metamorphic rock.

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Xie, Busheng, Lixin Wu, Wenfei Mao, Shengyu Zhou e Shanjun Liu. "An Open Integrated Rock Spectral Library (RockSL) for a Global Sharing and Matching Service". Minerals 12, n. 2 (20 gennaio 2022): 118. http://dx.doi.org/10.3390/min12020118.

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Minerals and rocks are important natural resources that are formed over a long period of geological history. Spectroscopy is the basis of the identification and characterisation of rocks and minerals via proximal sensing in the field or remote sensing systems with multi- and hyper-spectral capabilities. However, spectral data is scattered around different institutions worldwide and stored in various formats, resulting in poor data usability and an unnecessary waste of time and information. To improve the usability and performance of mineral spectral data, we developed an integrated open mineral spectral library (Rock Spectral Library, RockSL). Shared spectral data and related information were collected worldwide, and data cleaning measures were performed to retain the qualified spectra and merge all qualified data (raster, vector, and text formats) in a common framework to establish a reliable and comprehensive digital data set for an easy sharing and matching service. A software system was developed for the RockSL to manage, analyse, and apply the spectral data of minerals and rocks. We demonstrate how the information encoded in RockSL can determine the species of unknown rocks and describe specific mineral compositions. We also provide a reference scheme of the work chain and present key technologies for building different spectral libraries in diverse fields using RockSL. New contributions to RockSL are encouraged for this work to be improved to provide a better service and extend the applications of geo-sciences. This article introduces the characteristics of RockSL and demonstrates an experimental application.

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Kitchenham, Paul. "Rock Art: “Tatooing” Rocks?" Time and Mind 2, n. 3 (gennaio 2009): 347–48. http://dx.doi.org/10.2752/175169609x12464529903254.

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Evgenikou, V., A. Georgopoulos e M. Korres. "REASSEMBLY OF ROCK SEGMENTS, THE CASE OF AREOPAGUS HILL". ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLII-2/W9 (31 gennaio 2019): 325–32. http://dx.doi.org/10.5194/isprs-archives-xlii-2-w9-325-2019.

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<p><strong>Abstract.</strong> There are no specifications and/or standards for the restoration of collapsed masses of rocks, as in most cases the rocks bear no historical/archaeological value and their restoration would require significant budget and resources. But plenty of colossal statues, ancient temples, tombs and whole cities are carved on the surface or even expand in the interior of solid natural rocks. These so-called rock-cut monuments are located all around the globe and, in most cases, are made on a grand scale. Earthquakes, rock’s faults, erosion and karst can lead to massive rock collapses.The purpose of this paper is to establish an integrated methodology for the relocation of detached rock segments to their original positions. Specifically, the proposed methodology is based on the case of the Areopagus Hill and involves the generation of 3d models of the rock segments, their virtual reassembly and their utilization for the reconstruction of a part of the peak of the hill.</p>

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Ren, Jia Guo, e Qian Qian Wu. "Discussion on Geological Experiment Technology in Geological Work". Advanced Materials Research 616-618 (dicembre 2012): 60–63. http://dx.doi.org/10.4028/www.scientific.net/amr.616-618.60.

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This essay puts silicate rocks test as example on the basic of the analysis of new technology and method of geological experiment. This essay analyses the experimental principal and process of silicate rock’s total iron content, and it based on geology experimental operation process. The essay tries to probe into silicate rock’s mineral chemical composition, rock structure and tectonics through the research of the iron content and other chemical components of silicate rocks. Furthermore, this essay also estimates the optional mineral’s component content of sandstone ore, and then evaluates mining products and industrial and economic value. It is very important to guide the development of the mine.

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Tesi sul tema "Rocks"

Karpathakis, George. "Rock stories: The discourse of rocks and rock-collecting". Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2008. https://ro.ecu.edu.au/theses/218.

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Humanity's relationship with rocks is a long-standing one. Belk (1995, p.2) describes archaeological evidence of early assemblages of rocks found in Cro-Magnon caves that would not be out of place in contemporary rock-collections. Historically, apart from being used as material for tools and buildings. rocks were also used for magical, pharmaceutical and decorative purposes. During the Renaissance and Enlightenment, the practice of collecting rocks became associated with the sense of discovery and the colonial expansion of western European civilization across world, and with advances in mining, science and industry. It is a practice that continues through to the present day. This thesis is an ethnography that asks contemporary rock collectors: why do they collect rocks? How do they collect rocks? And, how do they talk about them? Adapting Foucault's theoretical framework on discourse (1970) and utilising positions on collecting put forward by Baudrillard ( 1994), Belk ( 1995), Benjamin (1999), and others, the thesis analyses interviews and images of rock-collectors and their collections and puts forward a snapshot of the discourse of rocks and rock-collecting as currently practiced. The thesis's theoretical framework is first tested on texts of popular culture on rocks and rock-collecting to locate and identify the statements and discursive formations that make up the discourse, and then it is applied to the interviews of contemporary collectors talking about their collections. While some rock collectors practice alone and their approaches may appear idiosyncratic, others, sharing knowledge and experience, practice in a club environment. The collectors' approaches to rock collecting range from the taxonomic and scientific to the aesthetic and utilitarian, personal and historical, and, for some, to the metaphysical. In Australia some aspects of rock-collecting are allied to prospecting and mining. For some collectors the rocks are souvenirs, and are connected to travel. For other collectors rock-collecting is associated with understandings of nature, time and space. The interviews reveal that in a consumer society rocks are also commodities, with many of the collectors not only acquiring their rocks in the field, but also buying what they cannot find, or trade, for their collection. The analysis of the collectors' interviews demonstrates that the discourse does not stand as an isolated figure, but shares statements and configurations of statements with many other discourses in the field of knowledge, including science, history, archaeology and metaphysics. The interviews also illustrate how discourse and their associated practices are subject to external and internal rules and regulations, imposed by the State, and by institutions of academia and cultural and scientific practices, such as museums and universities. Some collectors aspire to emulate museums, and wish to share with others knowledge about to their collection through exhibition. The variety of themes and practices found in the interviews reinforce Foucault's proposition that within a discourse statements and configurations of statements may arise that are incompatible and form diffractions in the discourse. While apparently incompatible themes, variations and differences exist within the discourse, the analysis of the interviews and the conclusion of the thesis underscore the underlying unities of the discourse of rocks and rock-collecting.

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Meyers, Anthony G. "The determination of rock mass strength for engineering design /". Title page, contents and abstract only, 1993. http://web4.library.adelaide.edu.au/theses/09PH/09phm6134.pdf.

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Cheng, Pei-fen Caral. "Project report on direct shear tests for rock joints". Click to view the E-thesis via HKUTO, 2002. http://sunzi.lib.hku.hk/hkuto/record/B42576659.

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Lock, Yick-bun. "An examination of failure criteria for some common rocks in Hong Kong /". Hong Kong : University of Hong Kong, 1996. http://sunzi.lib.hku.hk/hkuto/record.jsp?B17665164.

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Liu, Hao. "Acoustic emission and crack development in rocks". Hong Kong : University of Hong Kong, 2000. http://sunzi.lib.hku.hk/hkuto/record.jsp?B22786338.

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Wong, Chi-ho Howard. "Parametric study for a cavern in jointed rock using a distinct element model /". View the Table of Contents & Abstract, 2006. http://sunzi.lib.hku.hk/hkuto/record/B36616746.

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Wong, Wing-yee. "Permeability studies in rock fractures". View the Table of Contents & Abstract, 2002. http://sunzi.lib.hku.hk/hkuto/record/B30109334.

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Lin, Qiaoxing. "Strength degradation and damage micromechanism of granite under long-term loading". Click to view the E-thesis via HKUTO, 2006. http://sunzi.lib.hku.hk/hkuto/record/B37115406.

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Cheng, Pei-fen Caral, e 鄭佩芬. "Project report on direct shear tests for rock joints". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2002. http://hub.hku.hk/bib/B42576659.

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Liu, Hao, e 劉浩. "Acoustic emission and crack development in rocks". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2000. http://hub.hku.hk/bib/B31242066.

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Più fonti

Libri sul tema "Rocks"

Stille, Darlene R. Metamorphic rocks: Recycled rock. Minneapolis, Minn: Compass Point Books, 2008.

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Hurd, Will. Investigating rocks: The rock cycle. Chicago, Ill: Heinemann Library, 2008.

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ill, Petach Heidi, a cura di. Rocks, rocks big & small. Englewood Cliffs, NJ: Silver Press, 1990.

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Medearis, Michael. Rocks. Orlando: Harcourt, 1999.

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Morgan, Sally. Rocks. Mankato, Minn: Smart Apple Media, 2012.

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Squire, Ann. Rocks. New York: Children's Press, 2013.

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Macleod, Sinclair. Rocks. Aylesbury: Ginn, 1989.

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ill, Atkinson Mike, a cura di. Rocks. New York: M. Cavendish, 1990.

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J, Jennings Terry. Rocks. Ada, OK: Garrett Educational Corp., 1991.

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Michael, Atkinson, a cura di. Rocks. Bath: Cherrytree, 1989.

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Capitoli di libri sul tema "Rocks"

Henshon, Suzanna E., e Alyssa Del Campo. "Rocks Rock!" In Teaching Gifted Children, 291–93. New York: Routledge, 2021. http://dx.doi.org/10.4324/9781003238638-58.

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Okrusch, Martin, e Hartwig E. Frimmel. "Rocks". In Springer Textbooks in Earth Sciences, Geography and Environment, 55–67. Berlin, Heidelberg: Springer Berlin Heidelberg, 2020. http://dx.doi.org/10.1007/978-3-662-57316-7_3.

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Bertenshaw, Kirsty. "Rocks". In Tried and Tested Primary Science Experiments, 45–49. Abingdon, Oxon ; New York, NY : Routledge, 2019.: Routledge, 2019. http://dx.doi.org/10.4324/9780429454936-11.

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Prost, Gary L., e Benjamin P. Prost. "Rocks". In The Geology Companion, 37–66. Boca Raton : CRC Press, 2017.: CRC Press, 2017. http://dx.doi.org/10.1201/9781315152929-3.

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Davis, Alicé S., David F. Siems e Wendy A. Bohrson. "Volcanic Rocks from Rocas Alijos". In Rocas Alijos, 75–91. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-017-2917-8_5.

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Kozlovsky, Yevgeny A. "Rocks and Rock-Forming Minerals". In The Superdeep Well of the Kola Peninsula, 74–112. Berlin, Heidelberg: Springer Berlin Heidelberg, 1987. http://dx.doi.org/10.1007/978-3-642-71137-4_4.

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Flügel, Erik. "Reservoir Rocks and Host Rocks". In Microfacies of Carbonate Rocks, 877–94. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-662-08726-8_17.

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Shao, Haibing, Ju Wang, Thorsten Schäfer, Chun-Liang Zhang, Horst Geckeis, Thomas Nagel, Uwe Düsterloh, Olaf Kolditz e Hua Shao. "Introduction". In Thermo-Hydro-Mechanical-Chemical (THMC) Processes in Bentonite Barrier Systems, 1–4. Cham: Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-53204-7_1.

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Hsü, Kenneth J. "Rocks Fall". In Physical Principles of Sedimentology, 67–90. Berlin, Heidelberg: Springer Berlin Heidelberg, 1989. http://dx.doi.org/10.1007/978-3-662-02584-0_5.

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Hotakainen, Markus. "Mars Rocks!" In Mars, 216–31. New York, NY: Springer US, 2008. http://dx.doi.org/10.1007/978-0-387-76508-2_14.

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Atti di convegni sul tema "Rocks"

Dubos, Anne, e Jean-François Jégo. "Rock Art Rocks Me". In MOCO'16: 3rd International Symposium on Movement and Computing. New York, NY, USA: ACM, 2016. http://dx.doi.org/10.1145/2948910.2948918.

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Jones, Steve, Greg Bruno e Tim McIntire. "Rocks clusters---Rocks clusters". In the 2006 ACM/IEEE conference. New York, New York, USA: ACM Press, 2006. http://dx.doi.org/10.1145/1188455.1188482.

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Lee, Ji Soo, David Jacobi e Zainab Alnajar. "Rock Mechanical Characterization of Unconventional Source Rocks". In SPE Middle East Oil and Gas Show and Conference. Society of Petroleum Engineers, 2019. http://dx.doi.org/10.2118/194953-ms.

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Takahashi, Toru, e Soichi Tanaka. "Rock physics modeling of soft sedimentary rocks". In SEG Technical Program Expanded Abstracts 2009. Society of Exploration Geophysicists, 2009. http://dx.doi.org/10.1190/1.3255249.

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Hossain, Zakir. "Rock Physics Modeling of CO2 Bearing Reservoir Rocks". In SPE Europec/EAGE Annual Conference. Society of Petroleum Engineers, 2012. http://dx.doi.org/10.2118/154490-ms.

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Li, Chengcheng, Kefei Zhang, Zhonggao Ma e Weihua Liu. "Rock property measurement and analysis of carbonate rocks". In SEG 2018 Workshop: Reservoir Geophysics, Daqing, China, 5-7 August 2018. Society of Exploration Geophysicists and the Chinese Geophysical Society, 2018. http://dx.doi.org/10.1190/rege2018-08.1.

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L. Farmer, C. "Numerical Rocks". In ECMOR I - 1st European Conference on the Mathematics of Oil Recovery. European Association of Geoscientists & Engineers, 1989. http://dx.doi.org/10.3997/2214-4609.201411323.

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Harvey, James E. "Radiometry rocks". In SPIE Optical Engineering + Applications, a cura di Mary G. Turner. SPIE, 2012. http://dx.doi.org/10.1117/12.930557.

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De Paor, Declan G. "VIRTUAL ROCKS". In GSA Annual Meeting in Denver, Colorado, USA - 2016. Geological Society of America, 2016. http://dx.doi.org/10.1130/abs/2016am-285911.

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McGuinness, M. J., A. C. Fowler, B. Scheu, W. T. Lee, Theodore E. Simos, George Psihoyios e Ch Tsitouras. "Exploding Rocks". In NUMERICAL ANALYSIS AND APPLIED MATHEMATICS: International Conference on Numerical Analysis and Applied Mathematics 2009: Volume 1 and Volume 2. AIP, 2009. http://dx.doi.org/10.1063/1.3241365.

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Rapporti di organizzazioni sul tema "Rocks"

Simandl, G. J., R. J. D'Souza, S. Paradis e J. Spence. Rare-earth element content of carbonate minerals in sediment-hosted Pb-Zn deposits, southern Canadian Rocky Mountains. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/328001.

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Paleozoic platform carbonate rocks of the Rocky Mountains host Mississippi Valley-type (MVT), magnesite, barite, and REE-barite-fluorite deposits. Farther west, platform carbonate rocks of the Kootenay Arc host MVT and fracture-controlled replacement (FCR) deposits. This is the first systematic LA-ICP-MS study of carbonates in MVT and FCR deposits. We investigated seven MVT deposits in the Rocky Mountains, and five MVT deposits in the Kootenay Arc. None of the post-Archean Australian shale (PAAS)-normalized REE profiles show light REE (LREE) depletion and strong negative Ce anomalies characteristic of modern seawater: some profiles are nearly flat; others show depletion in LREE similar to seawater but without negative Ce anomalies; others are middle REE enriched. Carbonates with a strong positive Eu anomaly precipitated from or interacted with different fluids than carbonates with flatter profiles without a strong positive Eu anomaly. REE signatures reflect crystallization conditions of primary carbonates, and crystallization and re-equilibration conditions of carbonates with ambient fluids during diagenesis, deep burial, and/or metamorphic recrystallization. Chemical evolution of fluids along their migration path, fluid-to-rock ratio, fluid acidity, redox, and temperature also influence REE profile shape, which helps establish genetic and timing constraints on studied deposits and improves knowledge of the metallogeny of the Kootenay Arc and Rocky Mountains.

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Van Rythoven, Adrian. Preliminary data release of whole-rock assays from phosphoria-related entities in southwest Montana. Montana Bureau of Mines and Geology, settembre 2023. http://dx.doi.org/10.59691/gepa6042.

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This file provides whole-rock assay and supporting metadata for 35 samples of phosphate ore and associated rocks from mine, refinery, and prospect entities in southwestern Montana. These assays are to investigate the critical mineral potential of the Phosphoria Formation of sedimentary rocks in Montana.

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Seybold, Patricia. Granularity Rocks! Boston, MA: Patricia Seybold Group, luglio 2003. http://dx.doi.org/10.1571/psgp7-17-03cc.

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Turner, R. J. W., J. Page, M. Klassen, H. Quo Vadis e A. Jensen. Vancouver rocks. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2000. http://dx.doi.org/10.4095/211534.

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Jarrett, A. J. M., D. C. Champion, S. McLennan, J. R. Anderson, J. Byass, S. Webber e S. Gilmore. Whole-rock inorganic geochemistry of sedimentary rocks from northern Australia. Geoscience Australia, 2020. http://dx.doi.org/10.11636/record.2020.039.

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Currie, K. L. The relation of diamond-bearing rocks to other alkaline rocks. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1996. http://dx.doi.org/10.4095/210972.

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Bellefleur, G., e E. Schetselaar. Physical rock properties of host rocks and sulphide mineralization at Lalor. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2014. http://dx.doi.org/10.4095/296307.

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Karlstrom, Karl, Laura Crossey, Allyson Matthis e Carl Bowman. Telling time at Grand Canyon National Park: 2020 update. National Park Service, aprile 2021. http://dx.doi.org/10.36967/nrr-2285173.

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Grand Canyon National Park is all about time and timescales. Time is the currency of our daily life, of history, and of biological evolution. Grand Canyon’s beauty has inspired explorers, artists, and poets. Behind it all, Grand Canyon’s geology and sense of timelessness are among its most prominent and important resources. Grand Canyon has an exceptionally complete and well-exposed rock record of Earth’s history. It is an ideal place to gain a sense of geologic (or deep) time. A visit to the South or North rims, a hike into the canyon of any length, or a trip through the 277-mile (446-km) length of Grand Canyon are awe-inspiring experiences for many reasons, and they often motivate us to look deeper to understand how our human timescales of hundreds and thousands of years overlap with Earth’s many timescales reaching back millions and billions of years. This report summarizes how geologists tell time at Grand Canyon, and the resultant “best” numeric ages for the canyon’s strata based on recent scientific research. By best, we mean the most accurate and precise ages available, given the dating techniques used, geologic constraints, the availability of datable material, and the fossil record of Grand Canyon rock units. This paper updates a previously-published compilation of best numeric ages (Mathis and Bowman 2005a; 2005b; 2007) to incorporate recent revisions in the canyon’s stratigraphic nomenclature and additional numeric age determinations published in the scientific literature. From bottom to top, Grand Canyon’s rocks can be ordered into three “sets” (or primary packages), each with an overarching story. The Vishnu Basement Rocks were once tens of miles deep as North America’s crust formed via collisions of volcanic island chains with the pre-existing continent between 1,840 and 1,375 million years ago. The Grand Canyon Supergroup contains evidence for early single-celled life and represents basins that record the assembly and breakup of an early supercontinent between 729 and 1,255 million years ago. The Layered Paleozoic Rocks encode stories, layer by layer, of dramatic geologic changes and the evolution of animal life during the Paleozoic Era (period of ancient life) between 270 and 530 million years ago. In addition to characterizing the ages and geology of the three sets of rocks, we provide numeric ages for all the groups and formations within each set. Nine tables list the best ages along with information on each unit’s tectonic or depositional environment, and specific information explaining why revisions were made to previously published numeric ages. Photographs, line drawings, and diagrams of the different rock formations are included, as well as an extensive glossary of geologic terms to help define important scientific concepts. The three sets of rocks are separated by rock contacts called unconformities formed during long periods of erosion. This report unravels the Great Unconformity, named by John Wesley Powell 150 years ago, and shows that it is made up of several distinct erosion surfaces. The Great Nonconformity is between the Vishnu Basement Rocks and the Grand Canyon Supergroup. The Great Angular Unconformity is between the Grand Canyon Supergroup and the Layered Paleozoic Rocks. Powell’s term, the Great Unconformity, is used for contacts where the Vishnu Basement Rocks are directly overlain by the Layered Paleozoic Rocks. The time missing at these and other unconformities within the sets is also summarized in this paper—a topic that can be as interesting as the time recorded. Our goal is to provide a single up-to-date reference that summarizes the main facets of when the rocks exposed in the canyon’s walls were formed and their geologic history. This authoritative and readable summary of the age of Grand Canyon rocks will hopefully be helpful to National Park Service staff including resource managers and park interpreters at many levels of geologic understandings...

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Greenough, J. D. Chapter 6: Mesozoic rocks. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1995. http://dx.doi.org/10.4095/205254.

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Currie, K. L. Chapter 8: Plutonic Rocks. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1995. http://dx.doi.org/10.4095/205258.

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