Results 131 to 140 of about 86,925 (244)

Heavy Metal Contamination in Two Tilapia Species (Oreochromis macrochir and Coptodon rendalli) From the Kabompo River, Zambia: A Food Safety and Human Health Risk Assessment

open access: yesAquaculture, Fish and Fisheries, Volume 6, Issue 2, April 2026.
ABSTRACT Aquaculture sustainability is threatened by heavy metal contamination, particularly in regions where rivers are the primary water sources. The present study assessed the concentrations of cadmium (Cd), cobalt (Co), copper (Cu), manganese (Mn), nickel (Ni), lead (Pb) and zinc (Zn) in two key aquaculture species, Oreochromis macrochir and ...
Oliver Jolezya Hasimuna   +2 more
wiley   +1 more source

Recent Developments in Sustainable Composites for Printed Circuit Boards (PCBs): A Review

open access: yesMacromolecular Materials and Engineering, Volume 311, Issue 4, April 2026.
This review presents the potential of using natural plant fibers and biodegradable polymers as sustainable printed circuit boards (PCBs). This review provides future directions in innovation and sustainable PCBs development. Bio‐composites PCBs are both environmentally friendly and sustainable due to the natural fibres they contain.
Erdem Selver   +7 more
wiley   +1 more source

Major ore deposits in the Kozuf metallogenic area, R. Macedonia [PDF]

open access: yes, 2014
The productive ore mineralization within the Kozuf metallogenic area, mainly, has been related to the Alpine metallogenic epoch while spatial and temporal has been spread during the Cretaceous stage and Pliocene period.
Serafimovski, Todor   +2 more
core  

Bio‐Inspired Swarm Robotics Design for Mine Automation

open access: yesNatural Sciences, Volume 6, Issue 2, April 2026.
Ants demonstrate tandem running for cooperative haulage, and honeybees use memory‐based routes between hive and flowers. These behaviours inspire autonomous haulage robots in open‐pit mines to achieve efficient scan‐plan‐retrieve ore transport, replacing small haulage robots with large mining trucks.
Joven Tan   +2 more
wiley   +1 more source

Using fractals and power laws to predict the location of mineral deposits [PDF]

open access: yes, 2001
Around the world the mineral exploration industry is interested in getting that small increase in probability measure on the earth's surface of where the next large undiscovered deposit might be found. In particular WMC Resources Ltd has operations world
Broadgate, M.   +3 more
core  

Validating COI eDNA Metabarcoding Primers for Detection of Subterranean Fauna

open access: yesMolecular Ecology Resources, Volume 26, Issue 3, April 2026.
ABSTRACT Subterranean ecosystems host a diverse range of ancient fauna, but studying these ecosystems is challenging due to significant sampling difficulties. Environmental DNA (eDNA) metabarcoding offers a promising approach for monitoring subterranean biodiversity, yet issues such as primer bias and non‐target amplification can complicate its ...
Mieke van der Heyde   +6 more
wiley   +1 more source

Characterisation of gold from Fiji [PDF]

open access: yes, 1995
This is a study of the variation in chemistry and inclusion mineralogy of bedrock and placer gold from Fiji. It forms part of a large project, undertaking gold characterisation from a wide range of geological environments in Ecuador, Zimbabwe ...
Henney, P.J., Naden, Jon
core  

The Monetary Policy–Commodities Nexus: A Survey

open access: yesJournal of Economic Surveys, Volume 40, Issue 2, Page 1050-1082, April 2026.
ABSTRACT This survey synthesizes evidence on the bidirectional links between commodity markets and monetary policy. On the commodities‐to‐policy side, we review how shocks to energy, food, and metals pass through to inflation, inflation expectations, economic activity, and financial stability in state‐dependent ways that vary by shock type, exposure ...
Martin T. Bohl   +2 more
wiley   +1 more source

Giant Porphyry Copper Deposits Caused by a Slab Jamming in the Mantle Transition Zone

open access: yesTerra Nova, Volume 38, Issue 2, Page 106-115, April 2026.
ABSTRACT Two giant porphyry copper deposits in the Southern Central Andes formed during the Miocene–Pliocene transition when a bend in the subducting Juan de Fernández hotspot chain jammed in the mantle transition zone, causing mega‐scale slab‐kinking. This geometry implies mechanical resistance that caused East–West compression and eventually a thrust‐
Nipaporn Nakrong   +5 more
wiley   +1 more source

Overproduction of 42 Amino Acids Long Amyloid Beta Leads to Activation of Secretory Autophagy and Development of Drusen‐Like Structures Originating From Retinal Pigment Epithelium

open access: yesThe FASEB Journal, Volume 40, Issue 5, 15 March 2026.
The role of 42 amino acids long amyloid beta (Aβ) in the retinal pigment epithelium (RPE) was investigated using 5xFAD mice model overproducing Aβ. The RPE cells of 5xFAD mice showed increased oxidative stress, accumulation of autophagy‐destined proteins, increased expression of secretory autophagy markers, and increase in epithelial‐to‐mesenchymal ...
Johanna Ruuth   +7 more
wiley   +1 more source

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