boron

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bo·ron (B),

(bōr'on),
A nonmetallic trivalent element, atomic no. 5, atomic wt. 10.811; occurs as a hard crystalline mass or as a brown powder; forms borates and boric acid.
[Pers. Burah]

boron

A trivalent nonmetallic element, (atomic number 5; atomic weight 10.81).
 
Alternative medicine
Boron is believed by alternative health workers to be useful in pregnancy and menopause as it increases oestrogens; they also believe in boron deficiency.

Boron-rich foods
Almonds, beans, honey, lentils, peas, peaches, pears and raisins.
 
Molecular biology
A mutation of SLC4A11, which encodes a transporter that regulates intracellular boron levels, results in congenital endothelial dystrophy type 2, a rare form of corneal dystrophy.
 
Nutrition
Boron is non-toxic to humans; while boron is needed for certain cellular activities, a boron deficiency state is not known to exist.

Physics
Boron is used in physics as a neutron-absorber.
 
Physiology
Boron is a trace mineral needed for proper absorption and utilisation of calcium to maintain bone density, and may help prevent postmenopausal osteoporosis; daily supplements of boron may help retain dietary calcium, magnesium and phosphorus, and increase production of oestrogen and testosterone. It is also thought to safely promote muscle growth by body-builders.

bo·ron

(B) (bōr'on)
A nonmetallic trivalent element, atomic no. 5, atomic wt. 10.811; occurs as a hard crystalline mass or as a brown powder, and forms borates and boric acid. A nutritional need has been reported in pregnant women.
[Pers. Burah ]
References in periodicals archive ?
(MIC = minimal inhibitory concentration; CDT = combined disc test; APBA = aminophenyl boronic acid; MH = Mueller-Hinton agar; MHCLX = Mueller-Hinton agar containing cloxacillin; EDTA = ethylenediaminetetra-acetic acid.
Combined disc diffusion test using Phenyl boronic acid (PB): The differences in inhibition zones for cefoxitin (30 [micro]g) discs alone and in combination with 400 [micro]g of phenylboronic acid (PB) (120 mg dissolved in 3 mL dimethyl sulfonic acid + 3 mL distilled water) [HiMedia laboratories, Mumbai, India] were determined.
Pan, "Bifunctional porous polymers bearing boronic and sulfonic acids for hydrolysis of cellulose," ACS Sustainable Chemistry & Engineering, vol.
Kardosh et al., "Green tea polyphenols block the anticancer effects of bortezomib and other boronic acid-based proteasome inhibitors," Blood, vol.
Thermodynamics of boroxine formation from the aliphatic boronic monomers R-B[(OH).sub.2] (R = H, [H.sub.3]C [H.sub.2]N, HO, and F): a computational investigation.
Heterocycles such as rhodanine and related compounds have shown a range of biological activities such as anticancer, antibacterial, antidiabetic and antiviral as have boronic acid-containing compounds.
Zuniga et al., "Rapid multi-well assay for the analysis of sugar gut permeability markers: discrimination of sugar alcohols with a fluorescent probe array based on boronic acid appended viologens," Analytical Chemistry, vol.
[17] reported the pattern-based discrimination of six wine varietals by a 3 x 3 indicator displacement array composed of three boronic acid receptors and three colorimetric indicators.
Further research in this area has shown that many other ruthenium complexes, such as Ru[(bpy).sub.2] [(phendione).sup.2+], are also effective alternatives to Ru[(bpy).sub.2] [(phen-N[H.sub.2]).sup.2+], and that boronic acids, including APBA, also can serve as surface adhesives [6].
Important examples include the identification of the presence of amide/amine (-CN/NH2) [15, 20, 21, 37-46], alkyl sulfide (C-S) [33, 46-49], organosiloxane (Si-O-Si/Si-O-C) [89, 127, 140, 141], phosphates (P=O and P-OR) [38, 49, 93], and boronic acid (B-O and B-N) [114, 142, 143] moieties attached on the surface of C-dots, providing evidence for introduction of nitrogen (N), sulfur (S), silicon (Si), phosphorus (P), and boron (B) heteroatoms into C-dots.