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Journal articles on the topic 'Lonar basalts'

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Author: Grafiati

Published: 6 September 2023

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1

Antony, Chakkiath Paul, Gaurav G. Shimpi, Charles S. Cockell, Milind S. Patole, and Yogesh S. Shouche. "Molecular Characterization of Prokaryotic Communities Associated with Lonar Crater Basalts." Geomicrobiology Journal 31, no. 6 (June 5, 2014): 519–28. http://dx.doi.org/10.1080/01490451.2013.849314.

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2

Kiik, Kalle, Jüri Plado, Muddaramaiah Lingadevaru, Syed Hamim Jeelani, and Mateusz Szyszka. "Magnetic Anomaly and Model of the Lonar Meteorite Impact Crater in Maharashtra, India." Geosciences 10, no. 10 (October 20, 2020): 417. http://dx.doi.org/10.3390/geosciences10100417.

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The ground magnetic field of the Lonar impact crater (Maharashtra State, India) and its surrounding area was measured and studied utilizing 2.5-dimensional potential field modelling. Field data showed the crater depression is associated with a strong circular negative anomaly with an amplitude of more than 1000 nT. The negative anomaly, however, decreases smoothly while moving from south to north. Most of the crater rim exhibits anomalous positive values. Negative anomalies at the rim are seen in the south–southwestern sections and coinciding in the northeastern section with the Dhar valley. Our study shows that most of the anomaly is caused by the topographic effect and a strong SE directed natural remanent magnetization of Deccan Trap basalts, which are the target of the Lonar-creating projectile. The magnetic anomaly of the relatively weakly magnetized impact-produced allochthonous breccia and post-impact sediments is small, being less than 150 nT.

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3

ARIF, Md, N. BASAVAIAH, S. MISRA, and K. DEENADAYALAN. "Variations in magnetic properties of target basalts with the direction of asteroid impact: Example from Lonar crater, India." Meteoritics & Planetary Science 47, no. 8 (July 31, 2012): 1305–23. http://dx.doi.org/10.1111/j.1945-5100.2012.01395.x.

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4

Das Gupta, Rahul, Anupam Banerjee, Steven Goderis, Philippe Claeys, Frank Vanhaecke, and Ramananda Chakrabarti. "Evidence for a chondritic impactor, evaporation-condensation effects and melting of the Precambrian basement beneath the ‘target’ Deccan basalts at Lonar crater, India." Geochimica et Cosmochimica Acta 215 (October 2017): 51–75. http://dx.doi.org/10.1016/j.gca.2017.07.022.

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5

Senthil Kumar, P., K. J. Prasanna Lakshmi, N. Krishna, R. Menon, U. Sruthi, V. Keerthi, A. Senthil Kumar, D. Mysaiah, T. Seshunarayana, and M. K. Sen. "Impact fragmentation of Lonar Crater, India: Implications for impact cratering processes in basalt." Journal of Geophysical Research: Planets 119, no. 9 (September 2014): 2029–59. http://dx.doi.org/10.1002/2013je004543.

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6

Bender Koch, C., and E. A. Ferrow. "Impact related changes in mineral properties: Ti-magnetite from basaltic rocks at Lonar crater, India." Hyperfine Interactions 166, no. 1-4 (December 13, 2006): 505–9. http://dx.doi.org/10.1007/s10751-006-9317-2.

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7

Misra, S., Md Arif, N. Basavaiah, P. K. Srivastava, and A. Dube. "Structural and anisotropy of magnetic susceptibility (AMS) evidence for oblique impact on terrestrial basalt flows: Lonar crater, India." Geological Society of America Bulletin 122, no. 3-4 (October 16, 2009): 563–74. http://dx.doi.org/10.1130/b26550.1.

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8

DeWitt, B. J., D. Y. Cheng, T. J. McMahon, B. D. Nossaman, and P. J. Kadowitz. "Analysis of responses to bradykinin in the pulmonary vascular bed of the cat." American Journal of Physiology-Heart and Circulatory Physiology 266, no. 6 (June 1, 1994): H2256—H2267. http://dx.doi.org/10.1152/ajpheart.1994.266.6.h2256.

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Responses to bradykinin (BK) were investigated in the pulmonary vascular bed of the cat under conditions of controlled pulmonary blood flow and constant left atrial pressure when lobar arterial pressure was elevated to a high steady level. Under elevated-tone conditions, BK caused dose-related decreases in lobar arterial pressure. After administration of Hoe-140, a BK B2-receptor antagonist, vasodilator responses to BK were reduced in a selective manner. Vasodilator responses to BK were unchanged by atropine, glibenclamide, meclofenamate, or bronchial occlusion, suggesting that responses are not dependent on the activation of muscarinic receptors or K+ATP channels, the release of vasodilator prostaglandins, or changes in bronchomotor tone. The nitric oxide (NO) synthase inhibitors N omega-nitro-L-arginine benzyl ester and N omega-nitro-L-arginine reduced vasodilator responses to BK in a selective manner, indicating that responses to BK are mediated in part by the release of NO. Methylene blue, an inhibitor of the activation of soluble guanylate cyclase, increased lobar arterial pressure and decreased responses to BK. The increases in lobar arterial pressure in response to methylene blue were partially reversed by the administration of superoxide dismutase, indicating that generation of O2- may inactivate basally released NO. The duration of the response to BK was enhanced by the guanosine 3',5'-cyclic monophosphate (cGMP) phosphodiesterase inhibitor Zaprinast, suggesting that responses to BK involve increases in cGMP levels. Responses to BK were enhanced by captopril, indicating that BK is rapidly inactivated by kininase II in the lung.(ABSTRACT TRUNCATED AT 250 WORDS)

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9

Wani, Aijaz Ahmad, Venkata Prasad Surakasi, Jay Siddharth, Raamesh Gowri Raghavan, Milind S. Patole, Dilip Ranade, and Yogesh S. Shouche. "Molecular analyses of microbial diversity associated with the Lonar soda lake in India: An impact crater in a basalt area." Research in Microbiology 157, no. 10 (December 2006): 928–37. http://dx.doi.org/10.1016/j.resmic.2006.08.005.

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10

Nabila, Nuzula Fikrin, Asra Al Fauzi, and Subagyo Subagyo. "GEJALA PADA LOKASI PERDARAHAN INTRASEREBRAL YANG BERBEDA PADA PASIEN DEWASA MUDA DI RSUD DR SOETOMO SURABAYA." Jurnal Kedokteran Syiah Kuala 19, no. 1 (April 1, 2019): 15–21. http://dx.doi.org/10.24815/jks.v19i1.18046.

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Abstrak. Studi mengenai karakteristik klinis dan luaran pasien stroke ICH usia muda masih terbatas karena angka kejadian yang rendah. Oleh karena itu, studi ini bertujuan untuk mengetahui karakteristik gejala pasien stroke ICH usia muda dengan lokasi perdarahan yang berbeda. Metode: Desain penelitian ini adalah studi cross-sectional. Data dianalisis dengan software Microsoft Excel. Penelitian ini melibatkan 90 dari 120 pasien dengan ICH primer, baik laki-laki maupun perempuan, yang berusia 25-44 tahun di RSUD Dr. Soetomo Surabaya dari tahun 2014 hingga 2015. Hasil: Gejala yang paling banyak terjadi pada stroke ICH lobar adalah nyeri kepala (69%) diikuti oleh penurunan kesadaran (55%). Gejala yang paling banyak terjadi pada stroke ICH ganglia basalis/kapsular adalah penurunan kesadaran (66%) diikuti oleh nyeri kepala (58%). Gejala yang paling banyak terjadi pada stroke ICH thalamus adalah penurunan kesadaran dan muntah (67%) diikuti oleh nyeri kepala (57%). Gejala yang paling banyak terjadi pada stroke ICH batang otak adalah nyeri kepala (70%) diikuti oleh penurunan kesadaran (60%). Gejala yang paling banyak terjadi pada stroke ICH intraventrikular adalah penurunan kesadaran (100%). Peningkatan tekanan darah sistolik dijumpai paling banyak pada stroke ICH thalamus (100%) diikuti oleh ganglia basalis/kapsular (92%) dan ppeningkatan tekanan darah diastolik dijumpai paling banyak pada stroke ICH thalamus (100%) diikuti oleh ganglia basalis/kapsular (84%). Kesimpulan: Gejala tersering stroke ICH dewasa muda adalah penurunan kesadaran dan nyeri kepala. Peningkatan tekanan darah sistolik maupun diastolik paling banyak terjadi pada stroke ICH thalamus dan basal ganglia/kapsular.Kata kunci: intracerebral hemorrhage; gejala; dewasa mudaAbstract. Studies regarding clinical characteristics and outcomes of young ICH stroke patients are limited because of its low incidence rates. Therefore, this study aims to determine the characteristics of symptoms of young ICH stroke patients with different bleeding sites. Methods: The design of this study was a cross-sectional study. Data is analyzed with Microsoft Excel software. This study involved 90 of 120 patients with primary ICH, both male and female, aged 25-44 years in RSUD Dr. Soetomo Surabaya from 2014 to 2015. Results: The most common symptom of lobar ICH stroke was headache (69%) followed by loss of consciousness (55%). The most common symptom of basal ganglia/capsular ICH stroke was loss of consciousness (66%) followed by headache (58%). The most common symptoms of thalamus ICH stroke are loss of consciousness and vomiting (67%) followed by headache (57%). The most common symptom of brainstem ICH stroke is headache (70%) followed by a loss of consciousness (60%). The most common symptom of intraventricular ICH stroke is loss of consciousness (100%). Increased systolic blood pressure was observed in most stroke ICH thalamus (100%) followed by basal ganglia/capsular (92%) and elevated diastolic blood pressure was observed in most thalamus ICH stroke (100%) followed by basal ganglia/capsular (84% ). Conclusion: The most common symptom of young adult ICH stroke is loss of consciousness and headache. Increased systolic or diastolic blood pressure is most common in ICH thalamus and basal ganglia/capsular stroke.Keywords: intracerebral hemorrhage; symptoms; young adults

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11

Rizal, Andi, Arif Faisal, and Sri Retna Dwidanarti. "Correlation of Volume and Intracerebral Site with Hemorrhagic Stroke Mortality Based on CT Scan." Academic Hospital Journal 1, no. 1 (March 1, 2018): 20. http://dx.doi.org/10.22146/ahj.v1i1.33621.

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Background: Intracerebral hemorrhage is a bleeding in the brain’s parenchyma that can extend into the ventricles, and in rare cases into the subarachnoid area. The effects of hemorrhage volume are from mild to severe clinical symptoms due to the increased intracranial pressure. Head CT scan is used to rule out other causes than stroke.Objective: This study aimed to determine the correlation of intracerebral hemorrhage volume and hemorrhage site with mortality of hemorrhagic stroke patients based on head CT scan tests.Design: This research used analytic observational methods to conduct a positive correlation assessment of volume and hemorrhage site with mortality in intracerebral hemorrhagic stroke patients. The study used a cross-sectional design with retrospective data. Data were assessed from 55 cases consisting of 29 men and 26 women.Results: The commonest hemorrhage was found in 24 cases (43.6%) in ganglia basalis, 15 cases (27.3%) in lobus parietalis and 8 cases (14.5%) in pons. Blood volume decreased to 25 cc in 35 cases (63.6%), 25-50 cc in 13 cases (23.6%), and decreased to more than 50 cc in 7 cases (12.7%). Correlations of contingency coefficient tests between mortality and hemorrhage site in lobar were (r=0.049, p=0.714), in deep artery territories (r=0.170, p=0.200) and in brain stem (r=0.298, p=0.020). Meanwhile, correlations between mortality and decreased blood volume to 25 cc were (r=0.589, p=0.000), in 25-50 cc (r=0.406, p=0.001) and for blood volume more than 50 cc (r=0.437, p=0.000).Conclusions: There was positive correlation between mortality and hemorrhage site in brain stem while in lobar and in deep artery territories there was no correlation with mortality and hemorrhage site. There were positive correlations between intracerebral hemorrhage volume and mortality with moderate correlation strength.

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12

Bose, T., S. Misra, S. Chakraborty, and K. Reddy. "Gamma (γ)-Ray Activity as a Tool for Identification of Hidden Ejecta Deposits Around Impact Crater on Basaltic Target: Example from Lonar Crater, India." Earth, Moon, and Planets 111, no. 1-2 (September 26, 2013): 31–46. http://dx.doi.org/10.1007/s11038-013-9422-6.

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13

Selimović, Amina. "Therapeutic flexible bronchoscopy in child with cystic fibrosis." Bosnian Journal of Basic Medical Sciences 5, no. 2 (May 20, 2008): 75–77. http://dx.doi.org/10.17305/bjbms.2005.3451.

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The report deals with the case of a 10-year-old girl with chronic cystic fibrosis. She has been repeatedly treated at the hospital. She has been hospitalized due to respiratory deterioration. Cystic fibrosis is a rare disease, inherited autosomaly recessively, but is very complex in terms of diagnostic and treatment (2). The diagnosis is confirmed based on a clinical picture of the child, measure of Chloride in the sweat, chest X-ray, CT thorax, laboratory findings--genetic confirmation CFTR ( cystic fibrosis transmembrane conductance regulator) genes (3), which result in the production of hyper-viscous mucus and chloride malabsorption in the sweat glands ducts (5,6). Bronchial thickening and plugging and ring shadows suggesting bronchiectasis, segmental or lobar atelectasis are often. Computer tomography of the chest can be used to detect and localize thickening of bronchial airways walls, mucus plugging, hyperinflation and early bronchieactasiae. Pulmonary therapy: the object is to clear secretions from airways and to control infection (7). The diagnosis is originally set when she was 4 years old. She is now admitted due to a deterioration of the main disease. Day before admission in the hospital had a higher bodily temperature, cough and difficult breathing. She already treated conservatively (Ceftazidim, Ceftriakson, Kloksacillin) Since the girl is a chronic patient with bronchiectasie chronic walls of bronchi changes full of the mucus, who is not responding to conservative treatment (antibiotics), therapeutic and diagnostic flexible bronchoscopy had to be performed, resulting in a gram-negative bacteria pseudomonas aeruginosa--a typical bacteria for chronically sick C. F. PATIENT: A pseudomonas therapy was prescribed according to the sensitive antibiogram, during which bronchoscopy was given locally on changes mucous pulmozyme and garamycin. Flexible bronchoscopy was performed as therapeutic. Local bronchoscopy findings:by aspiration of tracheo-bronchal truncus it was found hyperemia and a lot of mucous sticky secretion inside of tracheobronchal tree, especially middle lobe right side, lingual and basals part of the lungs. It was performed broncho-alveolar lavage and given steroids on the place of changed inflamed mucous membrane of the bronchi. It was also given pulmozyme to destroid mucous and make better spontaneously expectorations. Control chest x ray was performed and it was better.

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14

Black, Benjamin A., and Maryjo Brounce. "Linking impact melt redox with crustal weathering regime." Geology, August 8, 2023. http://dx.doi.org/10.1130/g51405.1.

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Impact melting and outgassing of impact melts were important processes shaping the crust and atmosphere of early Earth and Mars. The redox state of impact melts influences the gases they release, but the controls on impact melt redox are not well understood. Here, we present Fe micro−X-ray absorption near edge structure (μ-XANES) measurements of a suite of impact melt glasses from Lonar crater, India. As an impact into continental flood basalts, Lonar crater is an ideal analog for impacts into basaltic crust on early Earth and Mars. The Fe-μ-XANES technique permits robust characterization of the Fe3+/ΣFe ratio and therefore redox conditions in Lonar glasses. We found a range in Fe3+/ΣFe of 0.21−0.49 among Lonar glasses, including substantial intraclast variations. We conclude that a primary factor driving these variations was pre-impact oxidative weathering of target rocks. The coupling between crustal weathering regime and speciation of gases released from impact melts implies that impact melt outgassing could act as a feedback mechanism to reinforce prevailing surface redox conditions.

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15

Agarwal, A., and L. M. Alva-Valdivia. "Curie temperature of weakly shocked target basalts at the Lonar impact crater, India." Earth, Planets and Space 71, no. 1 (December 2019). http://dx.doi.org/10.1186/s40623-019-1120-9.

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AbstractThe study investigates Curie temperature (TC), bulk magnetic susceptibility, hysteresis, and X-ray diffraction pattern of in situ target basalts of Lonar impact crater, India. The main magnetic phase in the target basalt is low-Ti titanomagnetite. This study reveals an increase in TC and decrease in magnetic susceptibility and in full width at half maxima of the 311 peaks of titanomagnetite with distance from the crater center. Changes in crystal lattice of titanomagnetite, such as straining of 311 peaks, decrease in apparent crystallite size, and grain fragmentation may be among the possible reasons for the observed trends in TC and magnetic susceptibility. However, they both do not show any correlation between each other, indicating that different shock-induced processes affect them.

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Agarwal, Amar, Agnes Kontny, Deepak C. Srivastava, and Reinhard O. Greiling. "Shock pressure estimates in target basalts of a pristine crater: A case study in the Lonar crater, India." Geological Society of America Bulletin, June 10, 2015, B31172.1. http://dx.doi.org/10.1130/b31172.1.

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17

Kumar, P. Senthil. "Structural effects of meteorite impact on basalt: Evidence from Lonar crater, India." Journal of Geophysical Research 110, B12 (2005). http://dx.doi.org/10.1029/2005jb003662.

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18

Kumar, Vivek, and Shyam S. Rai. "3D geometry of the Lonar impact crater, India, imaged from cultural seismic noise." Geophysical Journal International, April 25, 2023. http://dx.doi.org/10.1093/gji/ggad177.

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Summary The Lonar impact crater in the Deccan Volcanic Province of India is an excellent analogue for impact-induced structures on the Moon and other terrestrial planets. We present a detailed architecture of the crater using a high-resolution 3-D seismic velocity image to a depth of 1.5 km through the inversion of high-frequency ambient noise data recorded over 20 broadband seismographs operating around the crater. The ambient noise waveform is dominated by cultural noise in the 1-10 Hz band. The shear wave velocity (Vs) model is created from Rayleigh wave group velocity data with a horizontal resolution of 0.5–1 km in the period range of 0.1–1.2 s. A key feature of the model is a velocity reduction of 10–15 per cent below the crater compared to outside the ejecta zone. The low-velocity zone below the crater is nearly circular and extends to a depth of ∼500 m. This estimated crater's depth is consistent with global depth-diameter scaling relations for simple craters. The basement, with a Vs of more than 2.5 km/s, lies beneath the Deccan basalt, which has a Vs of ∼2.4 km/s. These results are consistent with laboratory-measured data from the Lonar crater and borehole data in the western Deccan trap. This study opens a new window for exploring impact craters and sub-basalt structures using high-frequency ambient noise tomography.

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19

Kusuma, Andri Anugrah, Anita Liliana, and Nabila Asad. "KARAKTERISTIK PASIEN PERDARAHAN INTRASEREBRAL BERDASARKAN FAKTOR RISIKO, KLINIS, DAN LOKASI DI RS DUSTIRA CIMAHI PERIODE 2019-2020." Medika Kartika Jurnal Kedokteran dan Kesehatan, March 30, 2023, 1–10. http://dx.doi.org/10.35990/mk.v6n1.p1-10.

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Perdarahan intraserebral (PIS) meningkat pada pasien yang memiliki riwayat hipertensi, usia tua, dan berjenis kelamin laki-laki. Tujuan penelitian ini untuk mengetahui karakteristik pasien PIS berdasarkan insidensi, faktor risiko, manifestasi klinis, dan lokasi perdarahan. Penelitian ini menggunakan rancangan cross sectional yang diambil dari rekam medik meliputi usia, jenis kelamin, anamnesis, pemeriksaan fisik, dan hasil CT Scan. Sampel penelitian sejumlah 49 rekam medik. Hasil penelitian menunjukkan insidensi 7,7%, jumlah pasien PIS terbanyak adalah perempuan (51,02%) dengan usia ≥65 tahun (36,73%). Perdarahan di ganglia basalis menyebabkan hemiparese (31,91%), perdarahan di talamus paling sering dengan hemiparese (36,84%), perdarahan batang otak sering dengan aphasia dan hemiparese (26,32%), perdarahan serebelum dengan sakit kepala dan hemiparese (33,33%), sedangkan perdarahan di lobar paling sering dengan hemiparese (36,67%). Pasien dengan hipertensi sebanyak 67,35% dengan 32,65% pasien mengalami krisis hirpertensi. Gejala penurunan kesadaran (31,33%), dan lokasi perdarahan di ganglia basalis (40,82%). Dari hasil tersebut terdapat faktor yang bisa diintervensi atau dicegah terjadinya strok seperti pengelolaan tekanan darah secara optimal yang bisa dilakukan dengan menggiatkan edukasi bagi masyarakat dengan faktor risiko tersebut secara terus menerus. Simpulan dari hasil penelitian ini menunjukkan bahwa PIS merupakan penyakit yang sering menyerang pada perempuan berusia tua yang memiliki riwayat hipertensi. Perdarahan intraserebral paling sering terjadi di ganglia basalis dengan gejala hemiparese dan tekanan darah ≥180/120 mmHg

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20

Lakshmi, K. Jaya Prasanna, and P. Senthil Kumar. "Physical Properties of Basalt Ejecta Boulders at Lonar Crater, India: Insights Into the Target Heterogeneity and Impact Spallation Processes in Basalt With Application to Mars." Journal of Geophysical Research: Planets 125, no. 10 (October 2020). http://dx.doi.org/10.1029/2020je006593.

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21

Paul, Dhiraj, Shreyas V. Kumbhare, Snehit S. Mhatre, Somak P. Chowdhury, Sudarshan A. Shetty, Nachiket P. Marathe, Shrikant Bhute, and Yogesh S. Shouche. "Exploration of Microbial Diversity and Community Structure of Lonar Lake: The Only Hypersaline Meteorite Crater Lake within Basalt Rock." Frontiers in Microbiology 6 (January 22, 2016). http://dx.doi.org/10.3389/fmicb.2015.01553.

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22

Wright, Shawn P., Phil R. Christensen, and Thomas G. Sharp. "Laboratory thermal emission spectroscopy of shocked basalt from Lonar Crater, India, and implications for Mars orbital and sample data." Journal of Geophysical Research 116, E9 (September 17, 2011). http://dx.doi.org/10.1029/2010je003785.

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Chandran, Saranya R., S. James, J. Aswathi, Devika Padmakumar, T. Sadeeda Marjan, R. B. Binoj Kumar, Anil Chavan, Subhash Bhandari, and K. S. Sajinkumar. "A compendium of the best-preserved terrestrial hypervelocity impact crater in a basaltic terrain: The Lonar, India." Earth-Science Reviews, July 2023, 104508. http://dx.doi.org/10.1016/j.earscirev.2023.104508.

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Hernández Ramos, Eduardo Luciano, Klever Aníbal Guamán Chacha, and Cesar Eduardo Ochoa Díaz. "El incumplimiento de los principios del sistema económico popular y solitario afectan al desarrollo productivo de la sociedad ecuatoriana." Dilemas contemporáneos: Educación, Política y Valores, June 1, 2021. http://dx.doi.org/10.46377/dilemas.v8i.2722.

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Los principios de la Economía Popular y Solidaria, basadas en las normas constitucionales y legales vigentes, se sustenta en los principios del Buen Vivir, de la prelación del hombre sobre los capitales, la autogestión, la distribución equitativa de las utilidades, de la administración directa de las organizaciones, el comercio justo y otros, los cuales son consustanciales a los seres humanos, a fin de que cumplidos éstos, permitan al ser quien vive en sociedad, mejorar sus condiciones de vida, ayudar al desarrollo social, familiar e incluso del país y poner en práctica sus conocimientos profesionales o no para emprender nuevos modos de producción, que ayuden al engrandecimiento de la colectividad y permitan apoyarse unos con otros para logar el bienestar colectivo.

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R. Chandran, Saranya, S. James, J. Aswathi, Devika Padmakumar, R. B. Binoj Kumar, Anil Chavan, Vivek Bhore, Krishna Kajale, Subhash Bhandari, and K. S. Sajinkumar. "Lonar Impact Crater, India: the Best-Preserved Terrestrial Hypervelocity Impact Crater in a Basaltic Terrain as a Potential Global Geopark." Geoheritage 14, no. 4 (November 28, 2022). http://dx.doi.org/10.1007/s12371-022-00767-9.

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26

Arif, M., and Saumitra Misra. "Rock magnetism of ejected basaltic boulders from Lonar crater, India: Implications for the existence of a short‐lived impact‐generated weak magnetic field." Meteoritics & Planetary Science, March 22, 2021. http://dx.doi.org/10.1111/maps.13643.

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Kaplan, Viera, Guisella Andrea Martinez-Cerda, Eric Ojeda-Heise, and Cecilia Jeraldo. "Pilomatrixoma proliferante una rara variante histopatológica simulando un carcinoma de células escamosas." Revista Chilena de Dermatología 34, no. 3 (March 5, 2019). http://dx.doi.org/10.31879/rcderm.v34i3.210.

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Resumen:El Pilomatrixoma es un tumor anexial benigno. Presenta una variante histopatológica infrecuente denominada pilomatrixoma proliferante reportada en 1997 por Kaddu et al. Corresponde a una lesión compuesta predominantemente por una proliferación lobular de células basaloides, con atipia nuclear variable y figuras mitóticas, áreas focales que contienen material cornificado eosinófilo, junto con células sombra. Se propuso al pilomatrixoma proliferante como un subconjunto histopatológico distintivo del pilomatrixoma y se consideró como una variante proliferativa con un perfil histopatológico benigno. La dermatoscopía en este tumor, sobre todo en pacientes de edad avanzada, puede llegar a constituir una trampa dermatoscópica, que es difícil de diferenciar de otras lesiones, como el melanoma o el carcinoma de células basales. Existen múltiples reportes de casos en la literatura donde se informa de pilomatrixomas clásicos o proliferantes simulando otras neoplasias. Presentamos el caso de una paciente de 88 años con pilomatrixoma proliferante facial que simuló clínicamente un carcinoma de células escamosas y llevó a confusión diagnóstica inicial, se destacan las características histopatológicas y clínicas de los pilomatrixomas proliferantes. Abstract:Pilomatrixoma is a benign adnexal tumor. It has an infrequent histopathological variant called proliferating pilomatrixoma reported in 1997 by Kaddu et al. It corresponds to a lesion composed predominantly by a lobar proliferation of basaloid cells, with variable nuclear atypia and mitotic figures, focal areas containing eosinophilic cornified material, together with shadow cells. The proliferating pilomatrixoma was proposed as a distinctive histopathological subset of the pilomatrixoma and was considered as a proliferative variant with a benign histopathological profile. Dermatoscopy in this tumor, especially in elderly patients, can result in a dermatoscopic trap, which makes it difficult to differentiate from other lesions, such as melanoma or basal cell carcinoma. There are multiple reports of cases in the literature where classic or proliferating pilomatrixomas were reported simulating other neoplasms. We present the case of an 88-year-old patient with a proliferating facial pilomatrixoma that clinically simulated a squamous cell carcinoma and led to an initial diagnostic confusion, highlighting the histopathological and clinical characteristics of the proliferating pilomatrixoma.

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Caldera Ynfante, Jesús E., and Tania Giovanna Vivas-Barrera. "Teología de las migraciones: bases teóricas y normativas de su configuración." Via Inveniendi Et Iudicandi 17, no. 2 (July 17, 2023). http://dx.doi.org/10.15332/19090528.8777.

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Se exponen los resultados de la investigación que entiende a la migración moderna como un fenómeno multidimensional que, en nuestros días, conoce la renovación de las causas migratorias basadas en la pobreza, el hambre y las circunstancias de deterioro ambiental, lo que exige al corpus iuris del estatuto del refugiado una revisión de las causas del amparo de los nuevos migrantes. La forma de afirmar las libertades individuales y la vocación de una respuesta a la dinámica intercultural del mundo globalizado debe tener como centro de gravitación la fundamentación del humanismo cristiano para el cuidado de lavida y la protección del migrante, en tanto persona humana en situación de fragilidad o vulnerabilidad que merece respeto y espera satisfacción de sus derechos humanos por la dignidad humana de la que es titular. Se parte de la categoría del homo peregrinus y la peregrinación del hombre, en el plano terrenal y espiritual, en tránsito hacia la vida eterna, que, desde la mirada escatológica, da forma a la teología de la peregrinación, acuñada por san Agustín de Hipona. Se hace una la aproximación epistemológica entre la teología de la peregrinación agustiniana ―enfocada en el plano espiritual y teológico― y la naciente teología de las migraciones, teniendo como puntal idea la práctica del amor y la caridad acuñadas por el “doctor de la gracia”, traducidas luego como cultura del cuidado de la vida, la protección de la persona, la acogida de los migrantes, como personas humanas frágiles y vulnerables, que, a juicio de las aportaciones recientes del papa Francisco, pueden ser amparadas, con sentido cristiano, poniendo en práctica, para logar su desarrollo humano integral, los verbos rectores de su novísima y pertinente propuesta migratoria: acoger, proteger, promover e integrar.

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Izeta, Andrés D. "DOSSIER: Osteometría de camélidos sudamericanos." Revista del Museo de Antropología, December 21, 2009, 125–26. http://dx.doi.org/10.31048/1852.4826.v2.n1.5412.

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La identificación de elementos óseos y su asignación a una especie animal concreta es un tema central para la zooarqueología. Por ello desde la década de 1970 se han estudiado las diferencias morfométricas que permiten la diferenciación de especies que comparten una morfología ósea similar, especialmente cuando ésta es el resultado de un proceso de domesticación o de mejora de alguno de los caracteres de la población (e.g. Albarella y Payne 2005, von den Driesch 1976, Davis 1996, Payne y Bull 1988, Reitz 1994, Uerpmann 1979, Weinstock 2003 y bibliografía allí citada). Esta similitud morfológica puede tener sus dificultades en casos particulares como el de los camélidos sudamericanos. Esta familia (Camelidae) está compuesta actualmente por cuatro especies: Lama guanicoe Muller 1776 (guanaco), Lama glama Linnaeus 1758 (llama), Lama pacos o Vicugna pacos Linnaeus 1758 (alpaca) y Vicugna vicugna o Lama (Vicugna) vicugna Molina 1782 (vicuña). Ante la presencia de tantas variedades diferentes de camélidos es sumamente importante el estudio de las variaciones morfológicas, que permitan diferenciar las distintas especies, tema al que la osteometría pretende aportar nuevos datos para esta familia tan conspicua en el registro arqueológico y paleontológico sudamericano. Esto es una cuestión clave si lo que se intenta es realizar una reconstrucción paleoeconómica de las poblaciones humanas del pasado o de la paleoecología del ambiente en donde desarrollaron sus actividades. En los últimos años se ha implementado la aplicación de distintas técnicas sobre los restos de camélidos con el fin de avanzar en el análisis de la composición de los conjuntos recuperados de sitios arqueológicos de varias regiones del país y de países limítrofes (Noroeste argentino, Patagonia argentina y norte de Chile). Estas variaciones han sido estudiadas a través de dos vías de análisis: uno de tipo cualitativo y otro cuantitativo. Las formas de diferenciación entre especies basadas en análisis de tipo cualitativo corresponden al estudio de la morfología dental de los incisivos (Wheeler 1982, Lavallée et al. 1995: 58-59) y el estudio de las fibras (lanilla y pelo) (Reigadas 1994, 2001). El otro tipo de técnica que permite la identificación de las distintas especies corresponde a los análisis cuantitativos a partir de la osteometría y la aplicación de análisis estadísticos sobre sus resultados. Una de las primeras aplicaciones de esta clase de estudios sobre camélidos de contextos arqueológicos fue realizada por Jonathan Kent (1982). Otros autores lo han seguido como Elkin (1996), Izeta (2004, 2006 e. p.), López (2003), Madero (1992, 1993-1994) y Yacobaccio et al. (1997-1998) para el Noroeste de la Argentina y L’Hereux (2005) para Patagonia. En el ámbito de la Paleontología también se han realizado diversos estudios aplicando este tipo de análisis como los de Menegaz (2000) y Menegaz et al. (1988, 1989) entre otros. Por ello este Dossier tiene como fin agrupar diversos trabajos que enfocan en esa diversidad dentro de la familia Camelidae con el fin de logar diversas interpretaciones. Estas van desde cuestiones relacionadas con la identificación de caracteres métricos que permitan definir sexo (Kaufmann y L´Heureux), variaciones métricas entre especies domésticas (Vásquez y Rosales), entre especies domésticas y silvestres (Cartajena, Izeta et al.), entre especies silvestres (Labarca y Prieto) y patrones económicos (Olivera y Grant).

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