Distribution of goods is one of the main issues that directly affect the performance of the companies since efficient distribution of goods saves energy costs and also leads to reduced environmental impact.The multi-compartment vehicle routing problem (MCVRP) with a heterogeneous fleet of vehicles is encountered when dealing with this situation in
The use of a volcanic material as filler in self-compacting concrete production for lower strength applications
This study evaluates the use of large amounts of fine powders (fillers) derived from a Colombian volcanic material into the production of self-compacting concrete (SCC) for lower strength applications.The effects on SCC T-Shirts properties were studied with the incorporation of up to 50% of volcanic material of Tolima (MVT) as a partial substitute
Exotic-Dominated Grasslands Show Signs of Recovery with Cattle Grazing and Fire.
In grasslands, overgrazing by domestic livestock, fertilization, and introduction of exotic forage species leads to plant communities consisting of a mixture of native and exotic species.These degraded grasslands present a problem for land managers, farmers, and restoration ecologists concerned with improving biodiversity while continuing to use th
Metastatic squamous cell carcinoma masquerading as acute retinal necrosis
Purpose: To describe a case of retinal and optic nerve metastases masquerading as acute retinal necrosis secondary to primary squamous cell carcinoma of the lung.Observations: A 66-year-old male with a history of Stage IV lung cancer, actively on chemotherapy, presented with right eye vision loss, an afferent pupillary defect, and partial visual fi
Transition of Carbon Nanotube Sheets from Hydrophobicity to Hydrophilicity by Facile Electrochemical Wetting
The present study delves into the transformative effects of electrochemical oxidation on the hydrophobic-to-hydrophilic transition of carbon nanotube (CNT) sheets.The paper elucidates the inherent advantages of CNT Gift Card sheets, such as high electrical conductivity and mechanical strength, and contrasts them with the limitations posed by their