Extraction of boron from aqueous solutions using selective resins is important in a variety of applications including desalination, ultrapure water production, and nuclear power generation. Today's commercial boron-selective resins are exclusively prepared by functionalization of styrene-divinylbenzene (STY-DVB) beads with N-methylglucamine to produce resins with boron-chelating groups. However...

This review summarizes the evidence for boron essentiality across the biological spectrum with special focus on biochemical pathways and biomolecules relevant to immune function. Boron is an essential trace element for at least some organisms in each of the phylogenetic kingdoms Eubacteria, Stramenopila (brown algae and diatoms), Viridiplantae (green algae and familiar green plants), Fungi, and...

Boron is an essential micronutrient for plants, and it is beneficial for animals. However, at high concentrations boron is toxic to cells although the mechanism of this toxicity is not known. Atr1 has recently been identified as a boron efflux pump whose expression is upregulated in response to boron treatment. Here, we found that the expression of ATR1 is associated with expression of genes in...

Borosilicate zeolites have recently been studied in many aspects because they are useful in substitution of framework metal ions (to Al or Ga) and in catalyzing chemical reactions that use relatively weak acid strength. Boron shows a great extent of flexibility in coordination conversion between trigonal boron, B[3], and tetrahedral boron, B[4]. Such conversion takes place in the framework of b...

________________________________________________________________________________ Abstract In this study dietary boron at different doses (0, 25, 50, 100 and 200 mg/kg feed) was supplemented to layers from 4 to 64 weeks of age. There was no significant difference between treatments with respect of mortality, egg production, egg weight, egg mass and cracked eggs. Significant increases were observ...

PURPOSE There is a clear need for a technique that provides subcellular locations of fluorine and boron atoms from fluorinated neutron capture agents because positron emission tomography is being tested as a tool for providing tumor boron concentrations in boron neutron capture therapy. EXPERIMENTAL DESIGN Ion microscopy was used in combination with confocal laser scanning microscopy to inves...

Hydrogen is a volatile element involved in several geological processes ranging from rock weakening to the initiation of tectonic plates. Because it present diamond, investigation hydrogen content natural diamonds could provide valuable information. Such studies are scarce despite being among main impurities their structure. Using Elastic Recoil Detection Analysis, Fourier Transform Infrared sp...

background and objectives: drought stress is one of the most important environmental factors reducing growth and yield of crops, especially in arid and semiarid regions of the world. during drought stress, nutrient uptake diminishes due to rising of solute concentrations and so increasing of osmotic potential in the root zone. with increasing soil ph, micronutrient uptake decreases more than ot...

A sensitive and stable High Performance liquid chromatographic method has been developed for the identification of three process related impurities viz impurity-A, impurity-B and impurity-C in Dapoxetine hydrochloride. The method was optimized based on the peak shape and resolution of impurity-A, impurity-B and impurity-C. Phenomenex Luna C18 column (250mm×4.6 mm, 5um) was used for optimization...

The role of di-boron diffusion in evolution of B diffusion profiles has been investigated. We find that boron pair (Bs – Bi) diffusion can become as important as boron-interstitial pair (Bs – Sii) diffusion when both boron concentration and annealing temperature are very high, leading to concentration-dependent B diffusion. Our simulated B diffusion profiles with dramatic shouldering are in exc...