nitrate and ammonium forms of nitrogen are being applied to improve plant growth and uptake of other nutrients. given that the effect of application of different nitrate to ammonium ratios accompanied by other fertilizers (i.e. fe, mn and zn) has not been studied on wheat growth as well as uptake of fe, mn and zn, three glasshouse pot studies were conducted with factorial arrangement of treatme...

Erythrocytes are hemolyzed by myeloperand triiodothyronine-dependent, but not oxidase, an H203-generating system (gluin the chloride-dependent, systems. Hemocose + glucose oxidase; hypoxanthine + lysis is inhibited by the peroxidase inxanthine oxidase) and an oxidizable cohibitors, azide and cyanide, and by catafactor (chloride, iodide, thyroxine, tnlase and is stimulated by superoxide iodothyr...

Cobra venoms contain heat stable, basic, proteins that inhibit iodide accumulation by thyroid slices. Activity is not related to the content of phospholipase A or various other enzymatic activities. These proteins are present only in Elapid venoms and not in snakes of the Crotalidae or Viperidae families. Two such basic proteins, named cobramines A and B, have been purified from the crude venom...

We describe a preconcentration device that may be suitable for quantitative analysis of trace volatile ketones and aldehydes in ambient air as well as in human breath. The approach is based on microreactor chips fabricated from silicon wafers. The microreactors have thousands of micropillars in microfluidic channels for uniformly distributing a gaseous sample flowing through the chips. The surf...

Cobra venoms contain heat stable, basic, proteins that inhibit iodide accumulation by thyroid slices. Activity is not related to the content of phospholipase A or various other enzymatic activities. These proteins are present only in Elapid venoms and not in snakes of the Crotalidae or Viperidae families. Two such basic proteins, named cobramines A and B, have been purified from the crude venom...

Thyroid iodide uptake through the sodium-iodide symporter (NIS) is not only an essential step for thyroid hormones biosynthesis, but also fundamental for the diagnosis and treatment of different thyroid diseases. However, part of patients with thyroid cancer is refractory to radioiodine therapy, due to reduced ability to uptake iodide, which greatly reduces the chances of survival. Therefore, c...

The redetermined, low temperature (150 K), structure of tetra-n-butyl-ammonium bromide, (C(4)H(9))(4)N(+)·Br(-), has been found to be merohedrally twinned via twin law -1 0 0, 0 - 1 0, 1 0 1. The structure was previously determined, with low precision, no inclusion of H atoms and only the bromide ion refined with anisotropic displacement parameters, by Wang et al. (1995 ▶). Mol. Cryst. Liq. Cry...

A series of pyridines, pyrimidinones, oxazinones and their derivatives were synthesized as antimicrobial agents using citrazinic acid (2,6-dihydroxyisonicotinic acid) as a starting material. α,β-Unsaturated ketones 3a-c were condensed with cyanothio-acetamide in the presence of ammonium acetate to give 2-cyanopyridinethiones 4a-c, which were reacted with ethyl chloroacetate to yield the corresp...

Optoelectronic-compatible heterostructures are fabricated from layered inorganic-organic multiple quantum wells (IO-MQW) of Cyclohexenyl ethyl ammonium lead iodide, (C(6)H(9)C(2)H(4)NH(3))(2)PbI(4) (CHPI). These hybrids possess strongly-resonant optical features, are thermally stable and compatible with hybrid photonics assembly. Room-temperature strong-coupling is observed when these hybrids a...

Tert-butyl carbazate (1) reacted with ammonium thiocyanate and phenyl isothiocyanate to afford the corresponding 5-tert-butoxy-4H-1, 2, 4-triazole-3-thiol (3) 5-tert-butoxy-4-phenyl-2H1, 2, 4-triazole-3(4H)-thione 5 respectively. Compound (1) also reacted with carbon disulfide and potassium hydroxide to afford 5-tert-butoxy-1, 3, 4-oxadiazole-2(3H)-thione 6. Treatment of 6 with methyl iodide, 2...