Despite years of study, the precise mechanisms that control position-specific gene expression during development are not understood. Here, we analyze an enhancer element from the even skipped (eve) gene, which activates and positions two stripes of expression (stripes 3 and 7) in blastoderm stage Drosophila embryos. Previous genetic studies showed that the JAK-STAT pathway is required for full ...

effluent from ro (reverse osmosis) systems during recovery gradually becomes concentrated and supersaturated with soluble salts such as calcium carbonate (caco3), calcium sulfate (caso4), barium sulfate (baso4) and silica (sio2). thus we were looking for procedures to prevent precipitation of soluble salts on the membrane surface and decrease membrane permeability. therefore, recovery could be ...

Hypersaline brines are of growing environmental concern. While high-salinity desalination and zero liquid discharge (ZLD) increasingly attractive treatment options, the high salt scalant contents pose considerable technical difficulties to existing techniques. In this review, we introduce sources hypersaline brines, examine factors driving desalination, present thermodynamic minimum energy ZLD,...

This study analyses the concept of a novel multi-crystallization system to achieve zero liquid discharge (ZLD) for desalination plants using an innovative heat recovery consisting transfer fluid and compressor reduce energy consumption. The main focus is recover water separately extract salts from seawater brines with high purity, including calcite, anhydrite, sodium chloride, epsomite, which c...

Throughout the last decades developments on desalination field have been focused energy consumption and costs reduction. However, water recovery brine disposal are becoming a matter of concern to industry. In this work, Zero Liquid Discharge (ZLD) unit coupled with Solar Micro Gas Turbine (SMGT) system is presented address, among others, challenges mining industry in remote areas, particular, f...

Wastewater management is one of the main hurdles encountered by shale gas industry for boosting overall process cost-effectiveness while reducing environmental impacts. In this light, paper introduces a new multi-objective model thermo-economic and optimization solar-based zero-liquid discharge (ZLD) desalination systems. The solar-driven ZLD system especially developed desalinating high-salini...

The tannery industry is characterized by the consumption of a large quantity water, around 30–40 m3 for processing 1000 kg hide or skin. This amount becomes wastewater, containing about 300 different chemicals, mainly refractory organic compounds, with high chemical oxygen demand (COD), total dissolved salts (TDS), chromium, and evolution toxic gases, such as ammonia sulfides, etc. remaining ta...