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Zeitschriftenartikel zum Thema „Serpentinoid“

Autor: Grafiati

Veröffentlicht am 28. Juni 2021

Zuletzt aktualisiert am 1. Februar 2022

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1

Nielsen, Helene, Shakil Shakar, Ulla Weinreich, Mary Hansen, Rune Fisker, Thomas Baudendistel und Paul Aronowitz. „Morbo Serpentino“. Journal of Hospital Medicine 12, Nr. 9 (September 2017): 755–59. http://dx.doi.org/10.12788/jhm.2821.

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Raut, MonishS, Arun Maheshwari und Ganesh Shivnani. „Serpentinous structure in the right atrium“. Annals of Cardiac Anaesthesia 20, Nr. 2 (2017): 250. http://dx.doi.org/10.4103/0971-9784.203943.

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3

Agatzini-Leonardou, Stella, Ioannis G. Zafiratos und Dionysios Spathis. „Beneficiation of a Greek serpentinic nickeliferous ore“. Hydrometallurgy 74, Nr. 3-4 (Oktober 2004): 259–65. http://dx.doi.org/10.1016/j.hydromet.2004.05.005.

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4

Khalid, Muhammad Reyza, Fadhli Syamsudin, Nasrullah Zaini und Didik Sugiyanto. „Application of 2D resistivity method to determine serpentinite rocks in Kuta Cot Glie, Aceh Besar“. Journal of Aceh Physics Society 10, Nr. 1 (20.12.2020): 12–16. http://dx.doi.org/10.24815/jacps.v10i1.17904.

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Abstrak. Kuta Cot Glie di Aceh Besar, merupakan salah satu daerah yang memiliki potensi batuan metamorf serpentinit. Batuan ini dapat digunakan sebagai bahan baku untuk pembuatan pupuk, batu hias, dan beberapa manfaat lainnya. Penelitian ini bertujuan untuk menginterpretasi model bawah permukaan dan memperkirakan ketebalan lapisan batuan serpentinit. Metode geofisika yang digunakan adalah metode geolistrik resistivitas dengan konfigurasi Wenner-Schlumberger. Pengukuran dilakukan pada dua lintasan sepanjang 275 m untuk masing-masing lintasan dengan 56 buah elektroda dan jarak spasi setiap elektroda adalah 5 m. Prinsip metode geolistrik tersebut memanfaatkan sifat kelistrikan suatu material untuk mengetahui karakteristik material. Hasil penelitian menunjukkan bahwa nilai resistivitas adalah 50 - 150 Ωm yang diperkirakan lapisan batuan serpentinit dengan ketebalan 10 - 35 m.Abstract. Kuta Cot Glie located in Aceh Besar, Aceh Province, has a natural potential of serpentine. The metamorphic rocks used as a raw material for making fertilizer, ornamental stones, and other benefits. This research aims to interpret sub-surface models and estimate the thickness of the rock layers. The geophysical method used in this study was the resistivity geoelectric method with a Wenner-Schlumberger configuration. Measurements were carried out on two lines with 275 m for each line and the spacing of the electrode was 5m using 56 electrodes. The physical approach utilizes the electrical properties of a material to determine the characteristics of its material. The result show that the resistivity of 50 to 150 Ωm can be interpreted as serpentinite rock layers with the thickness of 10 m to 35 m.Keywords: Serpentinite, resistivity, geoelectric method, Wenner-Schlumberger configuration.

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Milleret, Margo, Luis Valdez und Elizabeth C. Ramirez. „Luis Valdez: Early Works: Actos, Bernabe, Pensamiento Serpentino“. Theatre Journal 43, Nr. 4 (Dezember 1991): 546. http://dx.doi.org/10.2307/3207995.

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6

Sommerlechner, Andrea. „Occhio serpentino, pelle bruna, chapo biondo und guancie vermigle“. Mitteilungen des Instituts für Österreichische Geschichtsforschung 112, JG (Dezember 2004): 213–37. http://dx.doi.org/10.7767/miog.2004.112.jg.213.

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Chương, Văn Đức, Trần Văn Thắng, Văn Đức Tùng, Phan Doãn Linh und Lê Triều Việt. „Ophiolit zone of Thai Nguyen - Cao Bang“. VIETNAM JOURNAL OF EARTH SCIENCES 25, Nr. 2 (19.03.2018): 142–49. http://dx.doi.org/10.15625/0866-7187/25/2/11895.

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Ophiolit zone of Thai Nguyen - Cao Bang started from the border of Vietnam with China, then stretched in passing Cao Bang - Dong Khe - SacCan - to Thai Nguyen. The structure of the ophiolit zone devided into five complex :- Dunite - serpentinit - peridotite complex,- Folliation gabros complex,- Gabros - diabaz complex, ·- Bazan toleit complex,- Sediment of marginal complex.The formation of Ophiolit zone occurred in the beginingPermi and ending in the late of Triassis by overslip of Eurasian plate over Song Hien marginal sea.

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Krzewicka, Beata. „The 'Verrucaria fuscella group' in Poland with some nomenclatorial remarks.“ Acta Societatis Botanicorum Poloniae 78, Nr. 3 (2011): 229–34. http://dx.doi.org/10.5586/asbp.2009.029.

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The <em>Verrucaria fuscella</em> group in Poland is revised. Two species, <em>Placopyrenium fuscellum</em> and <em>Verrucaria polysticta</em>, are confirmed for Poland, and <em>Placopyrenium canellum</em> is reported for the first time. <em>Dermatocarpon subfuscellum</em> var. <em>serpentini</em> Servít is synonymized with <em>P. fuscellum</em> and <em>V. fuscella</em> f. <em>subpruinosa</em> Servít is synonymized with <em>V. polysticta</em>.

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Ramappa Parashurama, Thyagarthi, und Manchanahally Byrappa Shivanna. „Fungal foliar diseases ofRauwolfia serpentinain wild, its seasonal occurrence, seed transmission and disease management“. Archives Of Phytopathology And Plant Protection 46, Nr. 13 (August 2013): 1609–21. http://dx.doi.org/10.1080/03235408.2013.772769.

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Torres Vera, Javier Camilo, Daniel Armando Gómez und Hernando Leon Rodriguez. „Diseño e Implementación del Sistema Electrónico y Comunicación para el Control un Robot Modular Tipo Serpiente“. Revista de Tecnología 16, Nr. 2 (03.02.2019): 114–21. http://dx.doi.org/10.18270/rt.v16i2.2525.

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Este proyecto consiste en el desarrollo de un sistema electrónico para manipular a un robot serpiente de manera modular; se implementaron tarjetas electrónicas en una relación maestro-esclavas para el control articular de cada módulo mecánico. Estas tarjetas se componen de un DSPic30F4011, microcontrolador de 16 bits de Microchip que incorpora el modulo CAN, protocolo esencial para la comunicación entre tarjetas, salidas PWM para el control de motores, puertos análogos y digitales; como también un socket para conectarse a un dispositivo externo a través de la UART. El firmware ha sido escrito en MikroC Pro. Cada microcontrolador implementa una ecuación característica proveniente de las curvas de Hirose para generar un movimiento serpentino. Este movimiento se simuló usando ROS (Robotic Operating System) en Rviz y finalmente se implementó en el prototipo robot.

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Agatzini-Leonardou, Stella, und Ioannis G. Zafiratos. „Beneficiation of a Greek serpentinic nickeliferous ore Part II. Sulphuric acid heap and agitation leaching“. Hydrometallurgy 74, Nr. 3-4 (Oktober 2004): 267–75. http://dx.doi.org/10.1016/j.hydromet.2004.05.006.

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Permanadewi, Sam. „CEBAKAN NIKEL LATERIT DI PULAU GAG, KABUPATEN RAJA AMPAT, PROVINSI PAPUA BARAT“. Buletin Sumber Daya Geologi 12, Nr. 1 (11.07.2017): 55–70. http://dx.doi.org/10.47599/bsdg.v12i1.23.

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Pulau Gag, yang terletak terpencil di deretan kepulauan Raja Ampat, merupakan pulau yang memendam sumberdaya mineral yang berlimpah. Sumber daya tersebut berupa cebakan bijih nikel laterit (Ni, Co, Fe) yang menempati ± 2/3 dari pulau tersebut. Secara geologi, 2/3 bagian Pulau Gag ditempati oleh komplek ofiolit yang terdiri atas batuan ultramafik (serpentinit, harzburgit, dan piroksenit) sedangkan sisanya ditempati oleh batuan gunungapi. Komplek ofiolit di Pulau Gag ini diduga sebagai kerak samudera yang secara tektonik tersungkup di tepi benua dan busur kepulauan akibat adanya pergerakan Benua Australia kearah utara. Laterit nikel terbentuk akibat adanya proses pelapukan kimia yang terjadi pada batuan ofiolit yang telah mengandung nikel. Bijih nikel sekunder berupa garnierite diendapkan kembali dalam horizon tanah penutup, limonit dan saprolit setelah mengalami pengayaan oleh proses pelapukan. Berdasarkan hasil analisa contoh, menunjukkan bahwa kandungan Ni dalam laterit adalah 1,2% Ni, >30% Fe (lapisan limonit); 1,2% Ni, <15% Fe (lapisan saprolit).

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Linde-Laursen, Ib, Ole Seberg, Signe Frederiksen und Claus Baden. „The karyotype ofFestucopsis serpentini (Poaceae Triticeae) from Albania studied by banding techniques and in situ hybridization“. Plant Systematics and Evolution 201, Nr. 1-4 (1996): 75–82. http://dx.doi.org/10.1007/bf00989052.

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14

Zulumyan, Nshan, Anna Isahakyan und Hayk Beglaryan. „Physicochemical characteristics and behavior of the serpentinous peridotite outcrops of San Jose and New Idria (California, USA) upon heating treatment“. Epitoanyag - Journal of Silicate Based and Composite Materials 62, Nr. 2 (2010): 50–54. http://dx.doi.org/10.14382/epitoanyag-jsbcm.2010.11.

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15

Lessovaia, Sofia, Stefan Dultz, Yurii Polekhovsky, Viktoria Krupskaya, Marina Vigasina und Lubov Melchakova. „Rock control of pedogenic clay mineral formation in a shallow soil from serpentinous dunite in the Polar Urals, Russia“. Applied Clay Science 64 (August 2012): 4–11. http://dx.doi.org/10.1016/j.clay.2011.11.002.

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Ellneskog-Staam, Pernilla, Björn Salomon, Roland von Bothmer und Kesara Anamthawat-Jónsson. „The genome composition of hexaploid Psammopyrum athericum and octoploid Psammopyrum pungens (Poaceae: Triticeae)“. Genome 46, Nr. 1 (01.02.2003): 164–69. http://dx.doi.org/10.1139/g02-115.

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The genomic constitution of two species in the genus Psammopyrum, i.e., Ps. athericum (2n = 6x = 42) and Ps. pungens (2n = 8x = 56), was studied by genomic in situ hybridization (GISH). In Ps. athericum, one diploid chromosome set hybridized to a genomic probe from Pseudoroegneria ferganensis (St genome), one diploid set to a probe from Agropyron cristatum (P genome), and one diploid set to a probe from Thinopyrum junceiforme (EbEe genomes) or Th. bessarabicum (Eb genome). Substituting the St-genome probe with an L-genome probe from Festucopsis serpentinii resulted in exactly the same hybridization pattern, suggesting a genomic constitution of EStP or ELP for Ps. athericum. The same probes used on Ps. pungens showed two diploid sets of chromosomes hybridizing to the St-genome probe, one diploid set hybridizing to the P-genome probe, and one diploid set hybridizing to the EbEe-genome probe. The L-genome probe hybridized to approximately 14 of the chromosomes that were labeled by the St-genome probe. Hence the genomic constitution for Ps. pungens is proposed to be EStStP or EStLP.Key Words: Psammopyrum athericum, Psammopyrum pungens, in situ hybridization, Elytrigia pycnantha, Elytrigia pungens, genome analysis.

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Filipović, Branka, Zorica Šporčić, Tomislav Randjelović und Goran Nikolić. „Common Variable Immunodeficiency Associated with Inflammatory Bowel Disease and Type I Diabetes“. Clinical Medicine: Case Reports 2 (Januar 2009): CCRep.S3432. http://dx.doi.org/10.4137/ccrep.s3432.

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Common variable immunodeficiency (CVID) is a heterogeneous group of primary immunodeficiency disorders characterized by defective antibody production, low levels of serum immunoglobulins and increased susceptibility to infection. The patient was a 39-year-old male who was admitted to the gastroenterology department with a two week history of diarrhea, blunt abdominal pain below the umbilicus, prolonged febrile state, loss of appetite and loss of body weight of 18 kg during the previous six months. Screening tests of serum immunoglobulins showed decreased concentrations of three types of immunoglobulins: IgA < 0.24 g/L, IgM < 0.18 g/L and IgG < 1.55 g/L. Lymphocytes immunophenotypisation revealed inversed CD4+/8+ T cells ratio, 0.31 and absence of plasma cells (CD138 negative). Colonoscopy showed a rectal mucosa like cobblestones with multiple longitudinal and serpentinous ulceration, without involvement of other segments of the colon and the small intestine. Histopathology revealed aphtous ulcerative lesions, transmural inflammation with multiple lymphoid aggregates and benign lymphoid nodular hyperplasia of the small intestine. Plasma cells were absent from the lamina propria. Magnetic resonance imaging of a perianal fistula demonstrated a trans-sphicteric type. This case is specific because of the three illnesses associated and only one case of an association of diabetes mellitus type I and immunodeficiency reported thus far.

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Íñiguez Berrozpe, Lara, Carmen Guiral Pelegrín, José Manuel Martínez Torrecilla und José Antonio Hernández Vera. „Graccurris (Alfaro, La Rioja) y la decoración de la estancia 2 (casa 4)“. SPAL. Revista de Prehistoria y Arqueología de la Universidad de Sevilla 1, Nr. 30 (2021): 258–89. http://dx.doi.org/10.12795/spal.2021.i30.10.

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Presentamos una síntesis del contexto histórico y arqueológico de Graccurris, primera fundación romana de época republicana en el valle del Ebro. Nos centramos en el estudio de pavimentos, pinturas y estucos del sector C del yacimiento, prestando especial atención a los encontrados en la habitación 2 de la Casa 4, pavimentada con opus signinum, conservado in situ, y decoradas sus paredes con pinturas, halladas en estado fragmentario. El pavimento y el conjunto 2 corresponden a una primera fase decorativa, del siglo I d.C., relacionada con la remodelación de la ciudad en dicha época, mientras que la cronología del conjunto pictórico 1 nos lleva a principios del siglo II d.C., fecha que coincide con la reforma de la domus. Las primitivas pinturas, conservadas parcialmente, presentan un esquema sencillo: zócalo gris moteado y paneles rojos bordeados de bandas negras en la zona media. La decoración de la segunda fase es más compleja: zócalo con imitaciones marmóreas, zona media articulada en una sucesión de columnas y paneles que emulan mármol serpentino y, finalmente, en la zona superior se dispone un sistema de relación continua. Mármoles y columnas forman parte de la corriente pictórica en boga en el valle del Ebro en el siglo II d.C.

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Kanig, Martin, T. Soeprapto und G. Friedrich. „Die Bindungsformen von Si, Mg, Fe, Al, Mn, Cr, Ni und Co in Saprolit und Laterit über Serpentinit, Insel Gebe, Indonesien“. Zeitschrift für Pflanzenernährung und Bodenkunde 153, Nr. 6 (1990): 425–31. http://dx.doi.org/10.1002/jpln.19901530610.

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Baugé, S. M. Y., L. M. Lavkulich und H. E. Schreier. „Serpentine affected soils and the formation of magnesium phosphates (struvite)“. Canadian Journal of Soil Science 93, Nr. 2 (Mai 2013): 161–72. http://dx.doi.org/10.4141/cjss2012-117.

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Baugé, S. M. Y., Lavkulich, L. M. and Schreier, H. E. 2013. Serpentine affected soils and the formation of magnesium phosphates (struvite). Can. J. Soil Sci. 93: 161–172. The Sumas River watershed, located in the intensive agricultural region of the Lower Fraser Valley of British Columbia (Canada), contains serpentine asbestos from a natural landslide. Serpentinic soils have a high Mg to Ca ratio that can affect soil fertility, including soil-solution P relations. The objectives of the study were: (i) to evaluate some common methods of estimating plant available phosphorus in the surface horizons of the serpentine-affected soils and those receiving large quantities of livestock manure, and (ii) to determine if there is evidence for the formation of soluble Mg phosphates, e.g., struvite, a meta-stable P phase in these soils. Seven soil nutrient extractants were used to determine major and minor elemental concentrations. Acid ammonium oxalate, 1 M HCl and Bray P1 extractions were most effective for measuring available phosphorus in these soils. Manure and fertilizer applications appear to favor the formation of Mg-phosphates, and are considered to be more soluble in terms of phosphorus than either calcium-phosphates or aluminum/iron-phosphates. X-ray diffraction, scanning electron microscopy and nuclear magnetic resonance examinations gave positive evidence for the presence of struvite in the soils.

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Liétor, José, Juan Carlos Linares, Juan Manuel Martín García, Roberto García Ruiz und José Antonio Carreira. „Relaciones Suelo-Planta en Bosques de Abies pinsapo Boiss. Disponibilidad de Nutrientes y Estatus Nutricional“. Acta Botanica Malacitana 28 (01.01.2003): 89–104. http://dx.doi.org/10.24310/abm.v28i0.7269.

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RESUMEN. Relaciones Suelo-Planta en Bosques de Abies pinsapo Boiss. Disponibilidad de Nutrientes y Estatus Nutricional. Se han evaluado las relaciones entre las propiedades del suelo y el estado nutricional de los árboles en pinsapares del Paraje Natural Los Reales de Sierra Bermeja y del Parque Natural Sierra de las Nieves (Málaga-España). Sc seleccionaron pinsapares que difieren en cuanto a su estado sucesional (masas agradativas versus maduras) y sustrato litológico (serpentinas versus calizas), en los que se evaluaron variables morfoedáficas de perfiles de suelo, y se analizaron las concentraciones de nutrientes en muestras de suelo, hojarasca y acículas. Los suelos de pinsapares calcáreos en fase agradativa (Yunquera) mostraron las menores concentraciones de macro y micronutrientes totales. Esto se correspondía con contenidos también mínimos de N y P en tejidos foliares, indicando la existencia de un estrés nutricional general, como es habitual en masas forestales en fase de exclusión de tallos (máxima competencia intraespecífica). No obstante, la presencia de relaciones NIP foliares normales implica que dicho estrés nutricional no ha desencadenado desbalances internos entre dichos nutrientes en los árboles. En pinsapares calcícolas maduros (Ronda), la mayor acumulación de materia orgánica en la hojarasca y el suelo superficial se relaciona con un aumento de la disponibilidad de nutrientes en el suelo, y una reducción en el estrés nutricional de los árboles. El pinsapar serpentinícola de Los Reales de Sierra Bermeja mostró niveles anormalmente elevados de N, y de las relaciones NIP, tanto en el suelo como en los tejidos foliares. Estos síntomas son característicos de ecosistemas forestales en una fase temprana del denominado síndrome de saturación de nitrógeno, asociado a disfunciones en el ciclo del N.Palabras clave. Abies pinsapo, Sierra de las Nieves, Sierra Bermeja, macronutrientes, relaciones suelo- planta.ABSTRACT. Soil-Plant relationships in Abies pinsapo Boiss-Fir Forests. Nutrient Availability and Nutritional Status. Relationships between soil profile properties and the tree nutritional status have been evaluated in Pinsapo-fir (Abies pinsapo, Boiss.) forests at Los Reales de Sierra Bermeja Natural Site and Sierra de las Nieves Natural Park (Málaga -Spain). Pinsapo stands widely differing in sucesional status (agradative versus old-growth stands) and lithology (serpentinic versus calcarcous substrate) were selected. Soil profile-development and nutrients in soil, littler and needles have been compared to the plant community development and parent material. Overall macro- and micronutrients availability was low in young calcareous pinsapo stands (agradative phase). Foliar tissues at these stands showed minima N and P concentrations, indicating a general nutritional stress; although nutritional unbalances were absence as indicated by normal NIP ratios in foliar tissues. As a consequence of the progressive build-up of the organic matter pool in the litter and surface soil layers along with succession, nutrient availability in calcareous pinsapo forests was the highest at the old-growth stands, and the tree nutritional stress appeared to be relieved. The serpentinic pinsapo forest at Los Reales de Sierra Bermeja showed very high levels of nitrogen and N/P ratios, both in the soil and foliar tissues. These preliminary results suggest this pinsapo forest is at an early phase of the N saturation syndrome.Keywords. Abies pinsapo, Sierra de las Nieves, Sierra Bermeja, macronutrients, plant-soil relations.

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González-Darder, J. M., V. Quilis-Quesada, P. González-López, L. Real-Peña und V. Cortés-Doñate. „Tratamiento de un aneurisma serpentino gigante de arteria cerebral media con bypass de alto flujo desde la arteria carótida interna petrosa“. Neurocirugía 22, Nr. 5 (2011): 429–33. http://dx.doi.org/10.1016/s1130-1473(11)70041-0.

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González-Darder, J. M., V. Quilis-Quesada, P. González-López, L. Real-Peña und V. Cortés-Doñate. „Tratamiento de un aneurisma serpentino gigante de arteria cerebral media con bypass de alto flujo desde la arteria carótida interna petrosa“. Neurocirugía 22, Nr. 5 (Oktober 2011): 429–33. http://dx.doi.org/10.4321/s1130-14732011000500004.

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Giuliani, Claudia, Roberto Pellegrino, Bruno Tirillini und Laura Maleci Bini. „Micromorphological and chemical characterisation of Stachys recta L. subsp. serpentini (Fiori) Arrigoni in comparison to Stachys recta L. subsp. recta (Lamiaceae)“. Flora - Morphology, Distribution, Functional Ecology of Plants 203, Nr. 5 (Juli 2008): 376–85. http://dx.doi.org/10.1016/j.flora.2007.07.001.

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Russell, Ben. „Stone quarrying in Greece: ten years of research“. Archaeological Reports 63 (November 2017): 77–88. http://dx.doi.org/10.1017/s0570608418000078.

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It has been ten years since the publication of Lorenzo Lazzarini's monumental volume on the quarrying, use and properties of the coloured marbles of Greece: Poikiloi Lithoi, Versiculores Maculae: I Marmi Colorati della Grecia Antica (Lazzarini 2007). The first study since Angelina Dworakowska's Quarries in Ancient Greece (Dworakowska 1975) to attempt a large-scale examination of quarrying across Greece, Lazzarini's approach is fundamentally an archaeometric one. Analysis of the evidence for quarrying in different regions is set alongside minero-petrographic and geochemical analyses of the materials extracted. Lazzarini focuses on 12 lithotypes: marmor lacedaemonium from Laconia, variously referred to as serpentino and porfido verde antico; three stone types from the Mani peninsula: rosso antico tenario, nero antico tenario and cipollino tenario; from Chios, the famous marmor chium or portasanta, breccia di Aleppo and nero antico chiota; the breccia di settebasi and semesanto of Skyros; the intensively exploited marmor carystium or cipollino verde, as well as the marmor chalcidicum or fior di pesco from Euboea; and from central and northern Greece, marmor thessalicum or verde antico and the breccia policroma della Vittoria. For each of these lithotypes, Lazzarini considers the evidence for their use and distribution, illustrated with a distribution map in each case, and provides a thorough overview of what is known about their quarries. Archaeological and geological approaches are here combined, and this is a hallmark of much recent work on the question of quarrying and stone use through Greek history.

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Sarti, R. „MAURICE MAUVIEL, ELSO SIMONE SERPENTINI. Enrico Sappia: Cospiratore e agente segreto di Mazzini. (Historia, number 1.) Mosciano Sant'Angelo: Artemia Edizioni. 2009. Pp. 545. 25.00“. American Historical Review 115, Nr. 3 (01.06.2010): 913–14. http://dx.doi.org/10.1086/ahr.115.3.913-a.

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Sarti, Roland. „Maurice Mauviel and Elso Simone Serpentini . Enrico Sappia: Cospiratore e agente segreto di Mazzini . (Historia, number 1.) Mosciano Sant'Angelo : Artemia Edizioni . 2009 . Pp. 545. €25.00.“ American Historical Review 115, Nr. 3 (Juni 2010): 913–14. http://dx.doi.org/10.1086/ahr.115.3.913a.

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Andini, Mutiara, Niki Rahma Rizkita, Pherto Rimos, Febri E. Prihasto, Ahmad R. Trilaksana und Novi F. R. Dewi. „KAJIAN PENGARUH MATERIAL PROPERTIS DOMAIN BATUAN DASAR TERHADAP KESTABILAN LERENG PADA NIKEL LATERIT DI SITE POMALAA , SULAWESI TENGGARA, PT ANTAM Tbk“. Prosiding Temu Profesi Tahunan PERHAPI 1, Nr. 1 (29.03.2020): 453–62. http://dx.doi.org/10.36986/ptptp.v1i1.88.

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ABSTRAK Untuk mendukung kegiatan operasional penambangan, perlu dilakukan pembuatan kajian geoteknik yang bertujuan sebagai rencana awal desain lereng tambang maupun mengevaluasi kestabilan lereng pada saat kegiatan penambangan berlangsung. Untuk pembuatan kajian geoteknik di Site Pomalaa, dilakukan pengambilan 15 sampel untuk masing-masing domain (Hazburgit, Dunit, Serpentinit dan Peridotit) yang dibagi menjadi 5 sampel limonit, 5 sample saprolit dan 5 sampel bedrock. Selanjutnya, sampel tersebut dilakukan pengujian di laboratorium untuk mendapatakan nilai material properties. Material propertis limonit pada setiap domain memiliki rentang nilai kohesi 31,22 kN/m2- 40,49 kN/m2, sudut geser dalam 31,30o-37,36o, berat jenis basah 11,56 kN/m2-12,89 kN/m2, UCS 0,11Mpa – 0,59 Mpa.Sedangkan nilai material propertis pada saprolit memiliki rentang nilai kohesi 31,22 kN/m2-39,18 kN/m2, sudut geser dalam 34,71o-39,11o, berat jenis basah 10,86 kN/m2-13,52 kN/m2, UCS 0,19Mpa – 0,29 MPa. Material propertis tersebut selanjutnya digunakan sebagai parameter dalam melakukan analisis kestabilan lereng dengan mengeluarkan nilai faktor keamanan (FK) dan probability of failure (PoF). Pada kajian ini dilakukan simulasi dengan 4 pendekatan : (a) Pertama, menganalisis lereng dengan domain geologi tunggal, (b)Kedua, menganalisis lereng dengan menggabungkan 2 domain geologi yang berbeda, (c) Ketiga, menganalisis lereng dengan menggabungkan 3 domain geologi yang berbeda, (d) Menganalisis lereng dengan menggabungkan 4 domain geologi yang berbeda. Hasil simulasi dengan menggunakan 4 pendekatan tersebut menunjukkan nilai rata-rata FK limonit secara berturut sebesar 1.72, 1.71,1.73, dan 1.73 . Sedangkan nilai FK saprolit secara berturut sebesar 1.74, 1.78 , 1.75 dan 1.74. Rata-rata probability of failure pada simulasi ini dibawah 1%. Dari hasil simulasi dapat dilihat bahwa nilai faktor keamanan dari hasil simulasi beberapa material menunjukkan nilai yang konsisten, sehingga dapat dikatakan bahwa nilai material propertis nikel laterit pada batuan dasar yang berbeda cenderung sama (homogen), oleh karena itu pengambilan sampel geoteknik di site pomalaa tidak sensitif terhadap domain batuan. Key words: Domain Batuan Dasar, Kohesi, Sudut Geser Dalam, Berat Jenis Basah, UCS, Faktor Keamanan, Probability of Failure. ABSTRACT Concerning mining operations activities, geotechnical analysis should be carried out with the aim of planning the initial design of slope and evaluating the stability of the slope during mining activities. For making geotechnical studies at the Pomalaa Site, 15 samples were taken for each domain (Hazburgit, Dunit, Serpentinit and Peridotit) which were allocated into 5 samples for limonite, 5 samples for saprolite and 5 samples for bedrock. Furthermore, the sample is tested in a laboratory to obtain the value of material properties. Limonite property material in each domain has a range of cohesion values of 31.22 kN / m2-40.49 kN / m2, friction angle at 31.30o-37.36o, wet density 11.56 kN / m2-12.89 kN / m2, UCS 0.11Mpa - 0.59 Mpa. While the value of proper material in saprolite has a range of cohesion values of 31.22 kN / m2-39.18 kN / m2, shear angle in 34.71o-39.11o, wet specific gravity 10.86 kN / m2-13.52 kN / m2, UCS 0.19Mpa - 0.29 Mpa. The property material is then used as a parameter input to obtain slope stability analysis by issuing factor of safety (FK) and probability of failure (PoF) values ). In this case a simulation was conducted to 4 approaches: (a) First, analyzing slopes with a single geological domain, (b) Second, analyzing slopes by combining 2 different geological domains, (c) Third, analyzing slopes by combining 3 different geological domains , (d) Analyze slopes by combining 4 different geological domains. The simulation results using the 4 approaches show the average value of FK limonite which are 1.72, 1.71.1.73, and 1.73 respectively. While FK saprolite values were 1.74, 1.78, 1.75 and 1.74 respectively. The average probability of failure in this simulation is below 1%. From the simulation results it can be seen that the value of the safety factor from the simulation results of several materials shows a consistent value, so it can be said that the material value of laterite nickel properties in different bedrock tends to be the same (homogeneous), therefore geotechnical sampling at the Pomalaa site is not sensitive to the rock domain. Key words: Host Rock Domain, Cohesion, Friction angle, Wet Specific Gravity, UCS, Safety Factor, Probability of Failure.

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Pérez-Latorre, Andrés V., Federico Casimiro-Soriguer Solanas, Oscar Gavira und Baltasar Cabezudo. „Vegetación de la Reserva de la Biosfera Sierra de las Nieves: Río Grande y Sierras Prieta y Blanquilla (Málaga, España). Vegetation of the biosphere reserve Sierra de las Nieves: Grande river and Prieta-Blanquilla mountains (Malaga, Spain)“. Acta Botanica Malacitana 37 (01.12.2012): 103–40. http://dx.doi.org/10.24310/abm.v37i0.2675.

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Español. Se ha realizado un estudio florístico, fitocenológico y fitogeográfico de dos zonas de la Reserva de la Biosfera Sierra de las Nieves y su Entorno (sectores Rondeño y MalacitanoAxarquiense, provincia Bética, Región Mediterránea): el macizo montañoso de Prieta-Blanquilla y el Río Grande. Bioclimáticamente se caracterizan por la presencia de los pisos termomediterráneo seco-subhúmedo, mesomediterráneo seco - subhúmedo - húmedo y supramediterráneo húmedo. Se comentan algunos táxones de interés por su grado de amenaza (ej. Carduus rivasgodayanus), por estar protegidos (ej. Sarcocapnos baetica subsp. baetica) o por ser endemismos rondeños (ej. Linaria clementei) o muy escasos (ej. Teucrium reverchonii). El territorio presenta una muy elevada cantidad de sintaxones (72) si tenemos en cuenta su pequeña extensión. De estos sintaxones destacan algunas novedades como matorrales endémicos con bolinas (Cytiso plumosi-Ulicetum baetici genistetosum umbellatae) o lastonares endémicos de estas sierras (Festuco scariosae-Helictotrichetum arundani festucetosum capillifoliae). Se han catalogado 15 series de vegetación: 6 de tipo climatófilo caracterizadas por vegetación climácica de árboles planifolios, perennifolios o marcescentes (Quercus suber, Quercus rotundifolia, Quercus faginea, Acer granatensis), 2 edafoxerófilas de sabinares dolomitícolas (Juniperus phoenicea) o coscojares serpentinícolas (Quercus coccifera) y 7 edafohidrófilas con vegetación climácica dominada por árboles caducifolios (Populus alba, Fraxinus angustifolia, Salix pedicellata, Salix purpurea) o arbustos (Nerium oleander) de riberas o niveles freáticos. La vegetación de complejos topogénicos se desarrolla en roquedos (Saxifraga globulifera, Sarcocapnos baetica, Stachys circinata) y los edafogénicos en fuentes y tobas (Rubus ulmifolius, Scirpoides holoschoenus, Eupatorium cannabinum) o como prados higrófilos (Festuca arundinacea, Juncus buffonius, Juncus inflexus). English. Flora, vegetation and phytogeography have been studied in two areas of the Biosphere Reserve “Sierra de las Nieves y su Entorno” (Rondeño and Malacitano-Axarquiense phytogeographical sectors, Betica province, Mediterranean region): Prieta and Blanquilla mountains and Grande river. Three bioclimatic belts have been identified: thermomediterranean dry-subhumid, mesomediterranean dry - subhumid - humid and supramediterranean humid. Some interesting taxa are commented because of their endangered status (eg. Carduus rivasgodayanus), protected species (eg. Sarcocapnos baetica subsp. baetica) endemics (Linaria clementei) or very scarce populations (ej. Teucrium reverchonii). The studied region shows a very high amount of syntaxa (72) if we take into account its small area. Among the syntaxa some are new: endemic shrublands (Cytiso plumosi-Ulicetum baetici genistetosum umbellatae) and high mountain endemic pastures (Festuco scariosae-Helictotrichetum arundani festucetosum capillifoliae). 15 vegetation series have been catalogued: 6 series are climatophyllous and characterised by sclerophyll or marcescent broad-leaved trees, (Quercus suber, Quercus rotundifolia, Quercus faginea, Acer granatensis); 2 edaphoxerophyllic series characterised by dolomitic junipers (Juniperus phoenicea) or serpentinic kermes oak (Quercus coccifera); 7 series are edaphohydrophyllic and characterised by deciduous trees (Populus alba, Fraxinus angustifolia, Salix pedicellata, Salix purpurea) or tall shrubs (Nerium oleander) in riversides and banks. Other kind of vegetation develops in biotopes as rocks (Saxifraga globulifera, Sarcocapnos baetica, Stachys circinata), springs and damp soils (Rubus ulmifolius, Scirpoides holoschoenus, Eupatorium cannabinum) or pastures on wet soils (Festuca arundinacea, Juncus buffonius, Juncus inflexus).

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Ardiansyah, Edi Yasa, Syafriadi Syafriadi, T. Tibri, M. Eka Onwardana und Sungen Sungen. „POTENSI SERPENTINIT UNTUK PEMANFAATAN BAHAN BAKU PUPUK MINERAL“. Saintek ITM 32, Nr. 1 (07.07.2019). http://dx.doi.org/10.37369/si.v32i1.53.

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Batuan serpentinit adalah salah satu sumber mineral magnesit ini, diketahui memiliki kandungan unsur magnesium (Mg) besar, sehingga dapat dimanfaatkan sebagai bahan baku pupuk yang cukup menguntungkan, karena akan diperoleh unsur magnesium (Mg) dalam jumlah besar (Jarot, 2008). Daerah penelitian mempunyai sebaran bahan galian serpentinit sekitar 157.100 m2 dan jumlah tonase sumberdaya serpentinit tereka 136.151.807,3 ton. Berdasarkan hasil analisis kimia serpentinit mengandung unsur magnesium yakni 20 – 50%. Dari hasil analisa laboratorium pada batuan serpentinit ini layak untuk dimanfaatkan sebagai bahan baku pupuk mineral yang mutu dan memenuhi Standar Industri Indonesia .

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Лубaрдa, Биљaнa, und Дивнa Џoмбић. „ПРИЛОГ ПОЗНАВАЊУ ФЛОРЕ НА СЕРПЕНТИНИТИМА У ДОЛИНИ РИЈЕКЕ ЈОШАВКЕ“. СИМПОЗИЈУМ БИОЛОГА И ЕКОЛОГА РЕПУБЛИКЕ СРПСКЕ 3, Nr. 9 - 1 (01.02.2019). http://dx.doi.org/10.7251/skp180901013l.

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Теренска истраживања na серпентинитима у долини Јошавке у близини Бање Луке спроведена су током вегетацијске сезоне 2013. i 2014. године. Укупно је констатовано присуство 127 врста и подврста васкуларних биљака. Међу најзаступљенијим фамилијама посебно се истичу Compositae (14,7%), Poaceae (11,8%) и Leguminosae (Fabaceae) (8,7%). У биолошком спектру флоре у долини Јошавке утврђена је процентуална доминација хемикриптофита (52%) и терофита (15%). Биљногеографска анализа потврдила је доминацију евроазијског (19,7%), средњоевропског (17,3%) и субевроазијског (15%) флорног елемента. Констатовано је присуство шест таксона који припадају адвентивним биљакама. На подручју истраживања потврђено је присуство четири ендемичнa таксона: Gypsophila spergulaefolia, Euphorbia serpentini, Stachys recta subsp. baldaccii и Polygonum albanicum. Осим ендемичних, на анализираном подручју забиљежено је присуство неких ријетких биљака као што су: Paragymnopteris marantae, Dianthus giganteus subsp. croaticus, Sclerantus perennis, Thymus praecox subsp. jankae и Noccaea kovatsii.

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