Ž . The vesicular, fine-grained A horizon Av is the widespread, ubiquitous surficial horizon of desert soils in diverse landforms and parent materials of varying ages. Now known to form mostly through accumulation of eolian dust, recent studies show that dust accumulation and concomitant soil development are genetically linked to stone pavement formation. Changes in the magnitude of eolian acti...

Clinker-free, carbonate-bonded monoliths are prepared by accelerated carbonation for immobilization of hazardous elements present in: a stainless-steel slag, two copper slags, and one lead slag. In addition to the studies on individual mixes slags with 33 % 66 replacements slag also studied. Combinations temperatures (30 60 °C) three CO2-pressures (1, 5, 10 barg) Among non-ferrous carbonated in...

The leaching concentration of copper ions from the industrial sludge that has been extracted using sulfuric acid may still exceed 15 mg/L, which is the leaching standard of the toxicity characteristic leaching procedure (TCLP) for hazardous waste in Taiwan. Therefore, the acid-extracted industrial sludge is still an important source of hazardous waste. Usually, hazardous waste in Taiwan must be...

One of the main challenges in modern tissue engineering is to design biocompatible scaffolds with finely tuned porous architecture and capacity load bioactive molecules that guide growth differentiation cells during reconstruction. This work proposes a strategy alginate (PAS) well-tuned by leaching sacrificial vaterite CaCO3 microspheres packed alginate. Pore size interconnectivity depend on sp...

The Quaternary environmental history of the northern Great Basin is characterized by a combination of lower temperature and higher moisture than present. Using water-balance analysis of soils sampled along a climatic gradient, we demonstrate that long-term average effective moisture was about 2-4 cm yr-1 greater than present. Although this long-term average represents most of Quarternary time, ...

Spent HDS catalyst is an important secondary resource for extracting molybdenum. This study aimed to introduce a comprehensive process separating and recovering molybdenum from the roasted spent catalysts. The brief flow of novel technology contains pressure Na2CO3 liquor leaching, selective extraction using N263, circulating leaching raffinate. in catalysts can be leached by with 95.4%. Methyl...