50,613 Works

Miocene andesitic lavas of Sierra de Angangueo: a petrological, geochemical, and geochronological approach to arc magmatism in Central Mexico

María Del Sol Hernández-Bernal, Pedro Corona-Chávez, Gabriela Solís-Pichardo, Peter Schaaf, Jesús Solé-Viñas & José Francisco Molina
The early and middle Miocene andesitic lavas of the Sierra de Angangueo (MALSA) represent one of the most prominent landforms of intermediate magmatism in Central Mexico. In this paper, we present new petrological, geochemical, thermobarometric, and geochronological data in order to discuss the conditions of MALSA’s emplacement in the lithosphere. MALSA comprises a voluminous eroded early Miocene andesitic structure, emplaced on a Mesozoic basement. MALSA shows a wide variety of textures, from glassy and aphanitic...

The 401–409 Ma Xiaodonggou granitic intrusion: implications for understanding the Devonian Tectonics of the Northwest China Altai orogen

Jiahao Zheng, Fengmei Chai & Fuquan Yang
Palaeozoic granitoids in the Chinese Altai are important for understanding the evolution of the Central Asian Orogenic Belt (CAOB). The Xiaodonggou granitic intrusion, situated in the Chinese Altai (southern CAOB), is composed of two intrusive phases, medium-grained granite intruded by porphyritic granite. Zircon LA-ICP-MS U–Pb analyses of medium-grained granite and porphyritic granite yield ages of 409 ± 2 Ma and 400 ± 1 Ma, respectively, indicating that these formed in Early Devonian time. Medium-grained granite...

Petrogenesis of Early Cretaceous volcanic rocks of the Manketouebo Formation in the Wuchagou region, central Great Xing’an Range, NE China, and tectonic implications: geochronological, geochemical, and Hf isotopic evidence

Zheng Ji, Wen-Chun Ge, Qing-Hai Wang, Hao Yang, Guo-Chun Zhao, Jun-Hui Bi & Yu Dong
This study presents new whole-rock major and trace element geochemistry, zircon U–Pb ages, and Hf-isotope compositions for volcanic rocks from the Manketouebo Formation of the central Great Xing’an Range, NE China. These data provide precise ages and information on the petrogenesis and source of the magmas that formed this formation, furthering our understanding of the geodynamic setting of the large-scale late Mesozoic magmatism in the Great Xing’an Range and other areas in NE China. The...

Late Jurassic granitoids in the Xilamulun Mo belt, Northeastern China: geochronology, geochemistry, and tectonic implications

Qingdong Zeng, Weikang Guo, Shaoxiong Chu & Xiaoxia Duan
The Xilamulun Mo belt of Northeastern China, located in the southeastern segment of the Central Asia Orogenic Belt (CAOB), is composed of large deposits of porphyry Mo and quartz-vein-type Mo, which are related to Mesozoic granitoids. Previous studies led to the conclusion that all granitoids in the region formed during the Cretaceous and Triassic, but our new laser ablation inductively coupled plasma mass spectrometry U–Pb zircon dating of magmatic zircons from five samples of four...

Newly discovered eclogites from the Bangong Meso–Tethyan suture zone (Gaize, central Tibet, western China): mineralogy, geochemistry, geochronology, and tectonic implications

Yu-Xiu Zhang, Zhi-Wu Li, Li-Dong Zhu, Kai-Jun Zhang, Wen-Guang Yang & Xin Jin
We report the occurrence, mineralogy, whole-rock geochemistry, and geochronology of two types of eclogites newly discovered in the western Bangong Meso–Tethyan suture zone (Gaize, central Tibet, western China). Type 1 eclogites contain a peak metamorphic mineral assemblage of garnet + clinopyroxene whereas Type 2 ones are characterized by a peak metamorphic mineral assemblage of garnet + clinopyroxene + rutile. Type 2 clinopyroxene and garnet are relatively more enriched in Mg contents than Type 1 ones....

Athalia bolivari Dusmet lectotype

Andreas Taeger
Athalia bolivari Dusmet, 1896 A junior subjective synonym of Athalia circularis circularis (Klug, 1815). Synonymy by Benson (1962).
Athalia Bolivari (sic!) Dusmet, 1896: 146. Dusmet y Alonso, J. M. 1896: Algunos datos para el estudio de los Tenthredínidos de España. - Anales de la Sociedad Española de Historia Natural, 2. Ser., Madrid 5[=25]: 119-172 (reprint pp. 1-54). Benson, R. B. 1962: A revision of the Athaliini (Hymenoptera: Symphyta). - Bulletin of the British Museum (Natural History)....

The effect of topical ethanol extract of Cotinus coggygria Scop. on cutaneous wound healing in rats

Halil Aksoy, Mesut Sancar, Ali Sen, Betul Okuyan, Leyla Bitis, Fikriye Uras, Dilek Akakin, Ozge Cevik, Sukran Kultur & Fikret Vehbi İzzettin

Color mememaps of self-balancing strategies

Carlos Cotta & Rafael Nogueras
Color mememaps of self-balancing strategies in an island-based selecto-Lamarckian model. This figure is a companion to paper "Studying Self-Balancing Strategies in Island-Based Multimemetic Algorithms".

Color mememaps of spatially structured selecto-Lamarckian models

Carlos Cotta & Rafael Nogueras
Color mememaps of spatially structured selecto-Lamarckian models. This figure is a companion to paper "A Study on Meme Propagation in Multimemetic Algorithms", International Journal of Applied Mathematics and Computer Science

A GIS-based comparison of long-distance supply of energy wood for future needs from young forests to the coast of Finland

Mikko Nivala, Perttu Anttila & Juha Laitila
With increasing demand and competition for forest biomass, the future will see its transportation distances increase in Finland. The aim of the study was to evaluate long-distance transportation solutions and intermodal handling of energy wood for its journey from young forests to a combined heat and power plant in Kokkola, Finland. Via a case study, the costs of various supply chains were estimated on the basis of spatially explicit data. The potentials were estimated from...

Dialogue on Alternating Consciousness. From Perception to Infinities and Back to Free Will

Claus Janew
Can we trace back consciousness, reality, awareness, and free will to a single basic structure without giving up any of them? Can the universe exist in both real and individual ways without being composed of both? This dialogue founds consciousness and freedom of choice on the basis of a new reality concept that also includes the infinite as far as we understand it. Just the simplest distinction contains consciousness. It is not static, but a...

REMOVAL OF CIBACRON BRILLIANT YELLOW 3G-P DYE FROM AQUEOUS SOLUTIONS BY BRAZILIAN PEATS AS BIOSORBENTS

Suzimara Rovani, Andreia N. Fernandes, Lizie D.T. Prola, Eder C. Lima, Wmekson O. Santos, Matthew A. Adebayo & Lizie D. T. Prola

Emergent Monopoles in Spin and Water Ices

Randall S. Frost
Theory for the presence of magnetic monopoles in spin and water ices based on the geometrical constraints of placing water molecules on an oxygen vacancy lattice. Predicts the following conditions for the presence of the monopole: most probable oxygen-oxygen separation distance of about 3.5 angstroms, and monopole frequency of 2.012 THz and wavelength of 149 microns. Theory should apply to a wide range of materials containing oxygen atoms.

Emergent Monopoles in a Dilute Polymer Solution

Randall S. Frost & Keiko Frost
Considers the papermaking process as a phase separation process in which an emergent monopole is separated out of a dilute polymer slurry. Examines the thicknesses of 123 paper samples prepared over the course of 100 years and in different parts of the world. Obtains a value of 149 microns for the monopole wavelength (in agreement with the value predicted by R. S. Frost in the companion paper) and demonstrates the monopole's sensitivity to the presence...

Emergent Monopoles in a Dilute Polymer Solution

Randall S. Frost & Keiko Frost
Considers the papermaking process as a phase separation process in which an emergent monopole is separated out of a dilute polymer slurry. Examines the thicknesses of 123 paper samples prepared over the course of 100 years and in different parts of the world. Obtains a value of 149 microns for the monopole wavelength (in agreement with the value predicted by R. S. Frost in the companion paper) and demonstrates the monopole's sensitivity to the presence...

Emergent Monopoles in Spin and Water Ices

Randall S. Frost
Theory for the presence of magnetic monopoles in spin and water ices based on the geometrical constraints of placing water molecules on an oxygen vacancy lattice. Predicts the following conditions for the presence of the monopole: most probable oxygen-oxygen separation distance of about 3.5 angstroms, and monopole frequency of 2.012 THz and wavelength of 149 microns. Theory should apply to a wide range of materials containing oxygen atoms.

Infrared spectroscopic and chemometric approach for identifying binding medium in Sukias mansion’s wall paintings

Zahra Haghighi, Amir-Hossein Karimy, Farshad Karami, Amir Bagheri Garmarudi & Mohammadreza Khanmohammadi
This paper addresses the application of infrared spectroscopy in combination with chemometrics to identify wall painting’s binding medium while employing pattern recognition techniques to process FTIR data-set of complex samples. In this regard, based on the historical documents and previous researches, firstly 56 standard samples were prepared to represent strata of Persian wall paintings in the Safavid period in addition to real historic samples from the case study; Sukias mansion. Then, each sample was analysed...

Preliminary study on analysis and removal of wax from a Carrara marble statue

Salvatore Barreca, Maurizio Bruno, Lorena Oddo & Santino Orecchio
This preliminary study has mainly focused on the wax identification by nuclear magnetic resonance (NMR) and removal. Wax is used for many purposes in the field of art as protective coatings on wooden, stone or metal objects. From the comparison of the spectra H NMR and in particular with the correspondence of the resonance peaks of the samples taken from the statue and beeswax and paraffin, we can conclude that the wax applied on the...

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