GEOGRAPHICAL DISTRIBUTION GLOBAL INCIDENCE AND MORTALITY OF LUNG CANCER AND ITS RELATIONSHIP WITH THE HUMAN DEVELOPMENT INDEX (HDI); AN ECOLOGY STUDY IN 2018
WORLD CANCER RESEARCH JOURNAL
Authors: Goodarzi, E.; Sohrabivafa, M.; Adineh, H. A.; Moayed, L.; Khazaei, Z.
Abstract
Objective: Lung cancer (LC) is one of the most common cancers and the main causes of cancer mortality in the world. The aim of this study was to investigate the epidemiology of lung cancer incidence and mortality in 185 countries and its relationship with the HDI index in 2018. Materials and Methods: This is a descriptive-analytic study conducted on the extraction of incidence data and mortality rates of cancers from Cancer World Bank in 2018. The incidence and mortality rates and lung cancer distribution maps were drawn for World countries. To analyze the data, the correlation and regression tests were used to evaluate the correlation between the incidence and mortality with HDI. The statistical analysis was conducted by Stata-14 and the significance level was estimated at the level of 0.05. Results: With 209,386 new cases (12.22 per 100,000) and 1,761,007 deaths (19.88 per 100,000), lung cancer has the highest incidence and mortality rate in the world. The highest incidence rate (56.7 per 100,000) and mortality (44.4 per 100,000) of lung cancer were in Hungary. According to a projection, the incidence and mortality rate of lung cancer are expected to increase from 2018 to 2040, and the results showed that there was a positive and significant correlation between incidence (R=0.724, p< 0.001) and mortality (R=0.702, p< 0.001) of lung cancer with HDI in both sexes. The linear regression model showed that the increase in MYS (B=1.3, p< 0.05) and LBE (B=0.3, p< 0.05) increased the incidence of lung cancer (p< 0.05), and also the increase in HDI, MYS, LEB, and EYS were caused by increases in mortality, but the increase was not statistically significant (p> 0.05). Conclusions: With the highest global incidence, motility, and an upward trend by 2040, lung cancer has a considerable global importance, and the human development index (HDI) can be an important factor in reducing the incidence and mortality of patients.
Immiscible sulfide melts in primitive oceanic magmas: Evidence and implications from picrite lavas (Eastern Kamchatka, Russia)
AMERICAN MINERALOGIST
Authors: Savelyev, Dmitry P.; Kamenetsksky, Vadim S.; Danyushevsksky, Leonid V.; Botcharnikov, Roman E.; Kamenetsksky, Maya B.; Park, Jung-Woo; Portnyagin, Maxim V.; Olin, Paul; Krasheninnikov, Stepan P.; Hauffff, Folkmar; Zelenskski, Michael E.
Abstract
Silicate-sulfide liquid immiscibility in mantle-derived magmas has important control on the budget of siderophile and chalcophile metals, and is considered to be instrumental in the origin orthomagmatic sulfide deposits. Data on primitive sulfide melts in natural samples, even those representing most voluminous magmatism in oceanic rifts, are very scarce due to the small size and poor preservation of incipient sulfide melt globules. Here we present the first detailed report of the crystallized sulfides melts in the oceanic picrites of the (presumably) Cretaceous age Kamchatsky Mys ophiolite complex in Eastern Kamchatka (Far East Russia). Sulfide melts are present in three forms; (1) as inclusions in olivine (87.1-89.6 mol% Fo), (2) interstitial to the groundmass minerals (clinopyroxene, plagioclase, and Ti-magnetite) of studied picrites, and (3) as daughter phases in silicate melt inclusions hosted by olivine and Cr-spinel phenocrysts. The sulfide melt inclusions in olivine and the groundmass of studied rocks are composed of several sulfide phases that correspond to the monosulfide (Fe-Ni; Mss) and intermediate (Fe-Cu-Ni; Iss) solid solutions. Several <0.5 mu m Pd-Sn, Pt-Ag, and Au-Ag phases are recorded within the matrix sulfides, commonly along phase boundaries and fractures. Major elements (S, Fe, Cu, Ni, Co), platinum group elements (PGE), and gold analyzed in the homogenized olivine-hosted sulfide melt inclusions, and phases identified in the matrix sulfides record the range of magmatic sulfide compositions. The most primitive sulfide liquids are notably enriched in Ni and Cu [(Ni+Cu)/Fe, at% > 0.5], continuously evolve with crystallization of (e.g., increasing Cu/Ni and Au/PGE) and demonstrate metal fractionation between Mss and Iss. Although the compositional systematics found in this study are consistent with those previously recorded, the compositions of individual sulfide phases are strongly affected by the noble metal (PGE, Au) "nuggets" that exsolve at subsolidus temperatures and form during serpentinization of the rocks. We conclude that the budget of noble metals in the studied picrites is controlled by sulfides, but the abundances of Pt and Au are influenced by mobility in post-magmatic alteration. Our data can be also used for modeling sulfide saturation at crustal pressures and understanding behavior of the noble metals in primitive oceanic magmas.