····· lezzter Preis 20.00€ ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray In dieser außergewöhnlichen Gesamtdarstellung des Mineralreiches wird eine Fülle von Prozessen und lebendigen Wechselwirkungen aufgezeigt, die weit über die gängige Vorstellung der Gesteinswelt hinausführt. Die Mineralien erweisen sich hier als Stationen im Kreislauf der irdischen Stoffe und Elemente. Der Autor öffnet den Blick auf eine Welt von ungeheurer Faszination. Im Eis ist das Wasser zum Mineral geworden: Jahrhunderte in alpinen Gletschern, Jahrtausende im Dauerfrostboden Sibiriens und Nordamerikas und mehr als hunderttausend Jahre in der Antarktis. In tektonisch angelegten Spalten steigt die rotglühende Schmelze aus der Tiefe der Erde bis an die Oberfläche. Die feurige Natur des Schwefels manifestiert sich im Verglühen des Pyrit. Durch seine Wechselbeziehung zur Luft hat das Mineralreich an der Entwicklung der irdischen Atmosphäre mitgewirkt. Nahezu die Hälfte von den durch Lebewesen in den Gewässern abgelagerten Kalk- und Dolomitgesteinen ist ein mineralgewordener Anteil der Luft. Bei den Lebewesen wiederum wirken vielfältige mineralische Formprinzipien- Schneckenhäuser, Seeigel, Skelettbildungen- mit Gestaltungen von höchster Symmetrie und überwältigender Mannigfaltigkeit. ····· 10361198970
····· lezzter Preis 25.00€ ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Georg Agricola gilt als Begründer der wissenschaftlichen Behandlung der Mineralogie und Bergbaukunde und zählt zu den wichtigsten Persönlichkeiten der Technik-Geschichte.Sein großes Vermächtnis für den Bergbau und die Wissenschaftsgeschichte ist das 1556 erschienene Werk `De re metallica libri XII - Zwölf Bücher vom Berg- und Hüttenwesen`, worin er u.a. die Mineralien klassifiziert und bedeutende Ansätze zur Lagerstättenkunde formuliert. Darin wurzelt die geologische Wissenschaft späterer Jahrhunderte. Zudem begründen seine umfangreichen technologischen Ausführungen die frühen Ingenieurwissenschaften in der europäischen Renaissance. ····· 10361158405
····· lezzter Preis 54.90€ ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Dieses im Original 1922 erschienene Buch beschreibt die Grundlagen der Petroleumgeologie. ····· ····· ····· ····· ····· ····· ····· ····· ····· ····· ····· ····· ····· ····· ····· 10361150766
····· lezzter Preis 19.90€ ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Mit zahlreichen Abbildungen und zwei Tafeln unterlegtes Taschenbuch zum Bestimmen von Mineralen. Nachdruck des Originals von 1928. ····· ····· ····· ····· ····· ····· ····· ····· 10361150747
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray This work presents mathematical models for pressure and saturation distributions of oil and water flow through semi-infinite porous media. The mathematical models were developed from the popular Darcy s equation and the continuity equation. The mathematical model, which contains simultaneously saturation and pressure gradients, was decoupled to have a pure pressure and saturation differential equations. The Crank-Nicolson Finite Difference Method was used to provide solution to the partial differential equations. System of linear equations resulted from the discretized partial differential equations were solved for saturation and pressure distributions using the Modified Gaussian Elimination Method algorithm, which was implemented in Microsoft Excel Visual Basic for Application. The solution was tested using hypothetical oil/water well production data. The solution scheme and computer language adopted in this work are easy to apply and use as opposed to the sophisticated and expensive computer software used by most researchers in the area. ····· 10361147346
für 12.90€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Justus Ludwig Adolf Roth (1818-1892) war ein deutscher Geologe. Nachdruck des Originals von 1866. ····· ····· ····· ····· ····· ····· ····· ····· ····· ····· ····· ····· ····· ····· 10361141836
für 71.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray En el Golfo de Cádiz se produce la emisión de fluidos fríos ricos en metano debido a su estratégica configuración geológica. Como consecuencia de estas emisiones se han formado espectaculares concentraciones de carbonatos autigénicos en forma de chimenea producto de la actividad microbiana por la oxidación del metano en ausencia de oxígeno y la reducción de sulfatos. Algunas señales de dicha actividad han quedado reflejadas en el interior de las chimeneas, siendo los minerales de hierro con morfología framboidal la más significativa. En este trabajo se han establecido las relaciones entre chimeneas, emisiones de metano y actividad de determinados microorganismos quimiosintéticos. Además, se han inferido las condiciones físico-químicas de formación de las chimeneas y sus variaciones a partir del estudio de agrupaciones framboidales: desde condiciones anóxicas y pH altos que favorecen la precipitación de carbonatos hasta condiciones oxidantes y pH bajos cuando las chimeneas han estado en contacto con el agua marina. Este estudio permitirá seguir reinterpretando el registro geológico y aumentando la importancia de los carbonatos derivados del metano en el mismo. ····· 10361136497
für 71.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The book is representing a pioneer work in the field of Economic Geology/Ore Geology of Kurdistan, Northeast Iraq. The studied area was politically unstable until 1991, hence the geological work was limited and not in detail. As Mawat Ophiolite Complex is a part of this area, therefore studies related to this important complex was very limited. This study focused on petrology and mineralogy of rock types especially the ultramafic rocks namely chromitite rocks. The chromitite rocks is podiform in shape envelops by dunite and harzburgite rocks. Geochemical and mineralogical studies revealed economical interest for these rocks which the Cr2O3 wt % up to 45 %. Due to its high grade the geophysical study should be carried out for determining the reserve of the ore type. ····· 10361134360
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Fine coal dewatering continues to be a priority research area with a significant emphasis being placed on enhancing the dewatering performances from the existing technologies as well as developing new dewatering technologies. The present research relates to the performance improvement of an existing dewatering technology known as screen bowl centrifuge. The ability to produce low product moisture content and the relatively low dewatering cost has resulted in the wide-spread use of screen bowl centrifuge in the coal preparation plants. The main goal of the present investigation presented in the book was to investigate on how to improve upon the clean coal recovery performance of a screen bowl centrifuge while maintaining low product moisture content. In addition investigation was also done to understand the ultra-fine size classification performance of a screen bowl centrifuge. ····· 10361134132
für 61.20€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray El proyecto está orientado al estudio de la génesis del importante yacimiento de níquel ubicado en la localidad de Loma de Hierro en el estado Aragua, Venezuela. Éste yacimiento había tenido previos estudios relacionados con su génesis de formación y las posibles asociaciones minerales que en él se encuentran, sin embargo, muchos de estos estudios no contaron con un análisis más detallado de las partes del sistemas que dio origen a tal acumulación anómala de níquel es esa región. El presente estudio transformado en un proyecto de grado, le permite indagar y conocer acerca del elemento níquel, de sus diferentes acumulaciones en la superficie de la tierra, en particular la de Loma de Hierro, y demuestra claramente mediante el uso de herramientas de análisis químico y petrográfico, presentadas mediante datos numéricos e imágenes, la génesis del yacimiento, el mineral mena explotable y una serie de conclusiones a la cual se llegó. ····· 10361117415
für 61.20€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Micromorphological and mineralogical properties can provide insights and aid interpretation of soil classification.The main objective of the study was to increase the understanding of soil classification through evaluation of micromorphological and mineralogical properties of soils. With a view to determining if differences in properties could be used. Based on the geological map sheet used to identify different parent materials, eight (8) profiles were dung and described and five distinct soil types were identified and mapped as soil units A, B, C, D and E. Results obtained revealed that micromorphology of surface horizon in basaltic soils shows a porous (compound packing) and crumb microstructure. The groundmass consists mainly of fine iron hydroxides in crystallitic micromass. Compound coatings of radial distributed and isotropic ( amorphous ) iron hydroxides line the pores. Granitic surface horizon was mainly crumb with vughs and channels microstructure. In addition high clay content which complexes humus and thus reduces its ability to move downward in the profiles. The analysis should help shed some light on microbrafics and the work would be useful to Micropedologists. ····· 10361115903
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray A two-dimensional shallow resistivity survey of the groundwater potential of Ahmadu Bello University, Kongo Campus, Zaria Kaduna State, Nigeria using electrical imaging technique was carried out. Six image lines were measured at different strategic locations of the study area based on the fractured map of the area and Borehole log data information obtained from the area. Results from the interpretation of the data collected suggest 2-4 layers in the area studied.The resistivity value for the first layer (Topsoil) varies from 10 to 400 ohmm with thickness ranging from 1-14m. The second layer (Weathered Basement) has resistivity values between 120 and 500 ohm-m and thickness ranging from 5-11m. The third layer (Fractured basement) has resistivity values ranging from 500-1000 ohm-m and thickness between 3 and 6m. The fourth layer is the Fresh Basement (Bedrock) has resistivity values greater than 1000 ohm-m and infinite thickness.The southwest (SW) of the study area does represent a promising Aquifer with reasonable thickness of Weathered Basement and Fractured Zone. Also, the area seems to be a zone of high hydraulic conductivity because of its low resistivity values. ····· 10361114556
für 53.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray A comprehensive study was conducted to determine thorium, uranium and potassium elemental concentration in Kajuru, Kaduna State Nigeria using model Disa-300 portable gamma-ray spectrometer. The data were collected at 300 stations from all over the bedrock surface of the site based on the different lithological units of the study area. Element concentrations determined for uranium (eU) is 62 ppm bounded by 63 ppm contour line were considered anomalous and the threshold value of eU/eTh derived from the background corrected data for the site estimated to be 0.76 ppm. Therefore, all areas bounded by the 0.80 ppm contour line were considered anomalous. The high surface eU concentrations indicate uranium enrichment in this area. The high eU/eTh values and the surface K concentrations were low indicates preferential enrichment of uranium and thorium to potassium in this area. ····· 10361114105
für 53.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The Equation of state (EOS) of condensed matter is very important in many fields of basic and applied sciences [1-3]. A relation between pressure (P) and volume (V) which is capable of predicting P-V behaviour of a substance at constant temperature is known as isothermal EOS. The properties of solids under varying conditions of temperature and pressure have attracted the attention of theoretical and experimental workers because of their need in different branches of science [4-8]. In order to understand the behaviour of solids from atmospheric pressure (as P=0) upto their structural transition pressure and from room temperature upto melting temperature, it is desirable to have a precise knowledge of temperature and pressure dependence of several properties such as pressure dependence of unit cell volume ratio (V/V0), Grüneisen parameter ( ), Anderson- Grüneisen parameter ( T), Debye characteristic temperature ( D)etc. ····· 10361113564· 1 ·· 2 ·
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