in order to investigate the effects of different levels of nitrogen and phosphorous fertilizers on flower yield , yield components and some quality components of german chamomile, a factorial experiment based on a randomized complete block design with four replications was carried out in the medicinal plant research farm of shirvan college of agriculture during growing season of 2007-2008. nitr...

Amorphous calcium oxalate nanoparticles with sizes of ≈10 nm were synthesized at room temperature by hydrolysis of dimethyl oxalate from ethanolic solution.

Abstract. Rate coefficients for the reaction of NO3 radicals with a series aromatic aldehydes were measured in 7300 L simulation chamber at ambient temperature and pressure by relative absolute methods. The rate benzaldehyde (BA), ortho-tolualdehyde (O-TA), meta-tolualdehyde (M-TA), para-tolualdehyde (P-TA), 2,4-dimethyl (2,4-DMBA), 2,5-dimethyl (2,5-DMBA) 3,5-dimethyl (3,5-DMBA) k1= 2.6 ± 0.3,...

In this paper, a novel nano crystalline sodalite was synthesized and characterized by XRF, XRD, SEM and FTIR analysis. Cu2O nanoparticles (30-60 nm) were loaded on nano zeolite bed and utilized as an adsorbent to remove dimethyl phthalate. The SEM-EDX of modified zeolite indicates that the amount of copper loading on the zeolite was 4.5 wt%. Modified nano zeolite was used as an effective adsorb...

In the title compound, C(10)H(10)N(4)O(5)S·C(9)H(9)N(3)O(5), the amide groups of 3-(3,5-dinitro-benzo-yl)-1,1-dimethyl-thio-urea and N,N-dimethyl-3,5-dinitro-benzamide mol-ecules are oriented at dihedral angles of 39.13 (8) and 55.97 (11)°, respectively, to the attached benzene rings. In the crystal, the two mol-ecules are linked by an N-H⋯O hydrogen bond. Weak C-H⋯O link the mol-ecules into a ...

Methoxymethylation of a variety of alcohols was performed using formaldehyde dimethyl acetal in the presence of 1,3-dichloro-5,5-dimethyl hydantoin [DCDMH] and Poly N,N′-dibromo-N-ethyl naphthyl-2,7-disulfonamide [PBNS] as catalysts at room temperature and under solvent-free conditions. Our experiments show that primary and secondary alcohols can be smoothly converted into the corresponding MOM...

methoxymethylation of a variety of alcohols was performed using formaldehyde dimethyl acetal in the presence of 1,3-dichloro-5,5-dimethyl hydantoin [dcdmh] and poly n,n′-dibromo-n-ethyl naphthyl-2,7-disulfonamide [pbns] as catalysts at room temperature and under solvent-free conditions. our experiments show that primary and secondary alcohols can be smoothly converted into the corresponding mom...

Studies in Cucinogenesis. V. Methyl Derivatives of 1 : 2-Benzanthracene, M. J. SHEAR. In a further contribution to his series of studies on carcinogenesis Shear records his experiments with the methyl derivatives of 1 : 2-benzanthracene and related compounds. Of 21 compounds examined 10 produced tumors in mice a t the injection site. The more potent carcinogenic compounds were 5 : 10-dimethyl-1...