Poma Porras, Orlando Alan
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Poma Porras, Orlando Alan
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ORCID
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Q-6964-2017
20 resultados
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Item type:Publicación, Tectonomagmatic histories of western South America and southern Africa(2018-12-12)Citas (OpenAlex): 0metric-badges.view 3 - Algunas métricas están bloqueadas por suconfiguración de consentimiento
Item type:Publicación, Biodegradation of Low-Density Polyethylene—LDPE by the Lepidopteran Galleria Mellonella Reusing Beekeeping Waste(2022-09-09); ; Plastic pollution is one of the most serious environmental problems of this century because most plastics are single-use, and once their useful life is over, they become pollutants, since their decomposition takes approximately 100–400 years. The objective of this research is to evaluate the efficacy of low-density polyethylene (LDPE) biodegradation by G. mellonella in the district of Pangoa, Junín, Peru. For the development of the study, the G. mellonella was conditioned in three groups of beekeeping residues (beeswax, balanced diet, and wheat bran); after the conditioning stage, the biodegradation treatment was developed, which consisted of placing the G. mellonella in terrariums with the LDPE, the treatments were carried out at three different times (24, 36, and 48 h). To evaluate the efficacy of biodegradation, two analyses were taken into account: the Raman analysis of the low-density polyethylene samples and the weight reduction of the treated LDPE. The results of the Raman analysis indicated that the best treatment was the one applied with G. mellonella conditioned with beeswax, obtaining a wavelength intensity of 0.45 μ.a., while the weight reduction of the LDPE indicated that the best results were given at 36 h and conditioned with beeswax with a reduction of 236.3 mg. In conclusion, the use of G. mellonella for the biodegradation of low-density polyethylene is effective when it is conditioned with beeswax and the treatment is carried out at 36 h.Citas (OpenAlex): 12metric-badges.view 6 - Algunas métricas están bloqueadas por suconfiguración de consentimiento
Item type:Publicación, Episodic continental arc magmatism in the Peruvian Andes from U-Pb zircon geochronology(2017-01-01)Citas (OpenAlex): 0metric-badges.view 5 - Algunas métricas están bloqueadas por suconfiguración de consentimiento
Item type:Publicación, Oxygen and Hydrogen Isotope Values for Unaltered and Hydrothermally Altered Samples from the Cretaceous Linga Plutonic Complex of the Peruvian Coastal Batholith near Ica.(2015-12-18)Citas (OpenAlex): 0metric-badges.view 4 - Algunas métricas están bloqueadas por suconfiguración de consentimiento
Item type:Publicación, Quantitative Analysis of Climatic Variability in Relation to Surface Loss with Landsat Data in Peruvian Snow-Capped Mountains 2010–2020(2022-01-01); ; Climate change is affecting the planet due to lack of information regarding its temperatures, precipitation and decrease in the surface area of the snow-capped mountains, which causes a high impact on the melting of the snow-capped mountains, for this reason it is...Citas (OpenAlex): 0metric-badges.view 5 - Algunas métricas están bloqueadas por suconfiguración de consentimiento
Item type:Publicación, Fuzzy Model with Meteorological Variables for the Determination of the THSW Index and the Electric Field in the Area of East Lima, Peru(2021-01-01); ; Citas (OpenAlex): 3metric-badges.view 3 - Algunas métricas están bloqueadas por suconfiguración de consentimiento
Item type:Publicación, Fossil whale preservation implies high diatom accumulation rate in the Miocene–Pliocene Pisco Formation of Peru(2004-01-01); Alomía, MerlingResearch Article| February 01, 2004 Fossil whale preservation implies high diatom accumulation rate in the Miocene–Pliocene Pisco Formation of Peru Leonard R. Brand; Leonard R. Brand 1Department of Natural Sciences, Loma Linda University, Loma Linda, California 92350, USA Search for other works by this author on: GSW Google Scholar Raúl Esperante; Raúl Esperante 2Geoscience Research Institute, Loma Linda, California 92350, USA Search for other works by this author on: GSW Google Scholar Arthur V. Chadwick; Arthur V. Chadwick 3Biology Department, Southwestern Adventist University, Keene, Texas 76059, USA Search for other works by this author on: GSW Google Scholar Orlando Poma Porras; Orlando Poma Porras 4 Universidad Peruana Unión, Carretera Central, km. 19, Ñaña, Lima, Peru Search for other works by this author on: GSW Google Scholar Merling Alomía Merling Alomía 4 Universidad Peruana Unión, Carretera Central, km. 19, Ñaña, Lima, Peru Search for other works by this author on: GSW Google Scholar Geology (2004) 32 (2): 165–168. https://doi.org/10.1130/G20079.1 Article history received: 01 Aug 2003 rev-recd: 29 Oct 2003 accepted: 10 Nov 2003 first online: 03 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Leonard R. Brand, Raúl Esperante, Arthur V. Chadwick, Orlando Poma Porras, Merling Alomía; Fossil whale preservation implies high diatom accumulation rate in the Miocene–Pliocene Pisco Formation of Peru. Geology 2004;; 32 (2): 165–168. doi: https://doi.org/10.1130/G20079.1 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract Diatomaceous deposits in the Miocene–Pliocene Pisco Formation contain abundant whales preserved in pristine condition (bones articulated or at least closely associated), in some cases including preserved baleen. The well-preserved whales indicate rapid burial. The 346 whales within ∼1.5 km2 of surveyed surface were not buried as an event, but were distributed uninterrupted through an 80-m-thick sedimentary section. The diatomaceous sediment lacks repeating primary laminations, but instead is mostly massive, with irregular laminations and speckles. There is no evidence for bioturbation by invertebrates in the whale-bearing sediment. Current depositional models do not account for the volume of diatomaceous sediments or the taphonomic features of the whales. These taphonomic and sedimentary features suggest that rapid burial due to high diatom accumulation, in part by lateral advection into protected, shallow embayments, is responsible for the superb preservation of these whales, leading to a higher upper limit on phytoplankton accumulation rates than previously documented. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.Citas (OpenAlex): 71metric-badges.view 4 - Algunas métricas están bloqueadas por suconfiguración de consentimiento
Item type:Publicación, The occurrence of extreme events a tsunami and storm deposit in Chilcatay formation, Ica, Peru.(2016-12-01); Citas (OpenAlex): 0metric-badges.view 5 - Algunas métricas están bloqueadas por suconfiguración de consentimiento
Item type:Publicación, Volcanic-Plutonic links in the Peruvian Coastal Batholith: insights from Geochronology and arc migration(2025-11-24); Citas (OpenAlex): 1metric-badges.view 7 - Algunas métricas están bloqueadas por suconfiguración de consentimiento
Item type:Publicación, Neural Network Model with Time Series for the Prediction of the Electric Field in the East Lima Zone, Peru(2020-01-01); ; Saavedra, Carlos E.Global warming and climate change is a latent problem nowadays because it affects the quality of life of living beings that inhabit an electric planet; therefore, the atmosphere is charged with ions that constantly interact and achieve a continuous balance. Likewise,...Citas (OpenAlex): 2metric-badges.view 11