Cerca risorse accademiche

"El presente trabajo tiene como propósito rediseñar íntegramente el actual almacén de producto intermedio de la empresa Metalsa." "The purpose of this work is to redesign the current intermediate product warehouse of...

Acute semistatic toxicity tests were carried out for 96 h with first zoeae and young crabs of Chasmagnathus granulata. Survival curves and LC50 (lethal concentration 50, the concentration which produces the death of 50% ...

ObjectiveTo evaluate the pollution levels of lead， cadmium， mercury， arsenic in animal seafood sold in Tianjin City and dietary exposure risk of people in Tianjin.MethodsAccording to the requirements of the nationa...

The clay-hosted lithium deposit in Sonora, Mexico, represents a potential mining site for this critical mineral, which is essential for clean energy technologies and currently in high demand during the energy transition....

The study deals with determining the concentrations of heavy metals—silver (Ag), aluminum (Al), arsenic (As), barium (Ba), cadmium (Cd), cobalt (Co), chromium (Cr), copper (Cu), iron (Fe), lithium (Li), manganese (Mn),...

ABSTRACT The biological study was conducted at the University of Mosul, College of Education, Department of Biology. To aims at identifying effects of environmental pollution in the seven sites at Nineveh (Al-Rahmanyah,...

Abstract An external electric or magnetic field can transfer high-intensity energy directly to the electronic scale of materials, and change the spin, energy level arrangement and trajectory of electrons. These changes p...

Some species of fish have been used as bioindicators of aquatic environmental pollution all over the world. Pejerrey (Odontesthes bonariensis) was selected for the current study due to its sensitivity to pollutants and b...

The present study involves an assessment of pollution through the impact of heavy metals in the waters of the 17 July estuaries, the Industrial zone on the left, Muthanna coasts, and the Nineveh Bridge of the Tigris Rive...

The concentration of Al, Cr, Fe, Mn, Ni, Cu, Zn, Hg, Sr, Mo, Ag, Cd, Pb and As was analyzed in water, sediment, and muscle of Odontesthes bonariensis from the eutrophic San Roque Lake (Córdoba-Argentina). The monitoring...

In this work, the modifying effect of alkaline metals (Li, Na and K) is studied on the acid properties of the support and on the behavior of PtSn/γ-Al2O3 catalytic systems, in the isobutane dehydrogenation. The isopropy...

Risk analysis in the financial market requires the correct evaluation of volatility in terms of both prices and asset returns. Disturbances in quality of information, the economic and political situation and investment s...

Abstract In this study Three genera of common algae isolated from local environment in Mosul city were tested for their ability to utilize heavy metals Oscillatoria angustissima, Fragellaria vaucheria and Lyngbya tylorii...

The paper deals with the issue of the last global crisis caused by the Russian aggression against Ukraine and the disruptions it caused on the precious metals market. A global imbalance was caused accompanied by signif...

Abstract Background Epidemiological associations between multiple metals exposure and hypertension or blood pressure remain limited and inconclusive, especially for essential metals. This investigation intended to examin...

Abstract The effect of growth of two bacterial species Rhizobium leguminosarum biovar vicia and Bacillus subtilis upon growth of five soil species, Fusarium solani, Aspergillus fumigatus, Alternaria alternata, Stemphylu...

We have studied reflection spectra of dye-doped and undoped polymers deposited onto Ag and Au substrates and found anomalous dips in the UV spectral range. On top of Ag substrates, the λ ∼ 375 nm dips were observed i...

Chemical dissolution processes coupled to anodic oxide growth taking place by a "high-field" conduction mechanism, are considered. The equation for the steady-state current density obtained during potentiodynamic polariz...

Biomonitoring of heavy metal pollution through the use of biomarkers could be a difficult task since the organisms´ physiological changes could shift regarding natural factors (i.e., the season of the year) and due to t...

Additive manufacturing (AM), or 3D printing, is an emerging technology that “adds” materials up and constructs products through a layer-by-layer procedure. Laser powder bed fusion (LPBF) is a powder-bed-based AM tech...

Objective To explore the association between trace metals and multiple health outcomes. Methods The cross-sectional study was from eight cycles of National Health and Nutrition Examination Survey (NHANES) from 2005 to 20...

We investigate the electronic transport at the internal interface within a selection of metallic bilayer nanostructures using the contact-free, all-optical method of THz time-domain spectroscopy. The Ru/Co, Ru/Pt, and Ru...

Microplastics (MPs) and heavy metals (HMs) are emerging contaminants that pose potential risks to both environmental and human health. This investigation aims to evaluate the concentration, dispersion, and potential heal...

A survey of the elemental contents of K, Mg, Mn, Na, Cl, Br, Cs, Co, Rb, Fe, Zn, Al, Ti, V, As, Ag, Au and Cd in liver, kidney and muscle was performed in specimens of Commerson's dolphins (Cephalorhynchus c. commersonii...