[Study on the experimental application of floating-reference method to noninvasive blood glucose sensing].

Weak signal, low instrument signal-to-noise ratio, continuous variation of human physiological environment and the interferences from other components in blood make it difficult to extract the blood glucose information from near infrared spectrum in noninvasive blood glucose measurement. The floating-reference method, which analyses the effect of glucose concentration variation on absorption coefficient and scattering coefficient, gets spectrum at the reference point and the measurement point where the light intensity variations from absorption and scattering are counteractive and biggest respectively. By using the spectrum from reference point as reference, floating-reference method can reduce the interferences from variation of physiological environment and experiment circumstance.

2-Phenyl-imidazolium hemi(benzene-1,4-dicarboxyl-ate) trihydrate.

The asymmetric unit of the title compound, C(9)H(9)N(2) (+.)0.5C(8)H(4)O(4) (-)·3H(2)O, contains one 2-phenyl-imidazolium cation, half a benzene-1,4-dicarboxyl-ate anion and three water mol-ecules, which are connected by O-H⋯O and N-H⋯O hydrogen bonds into a three-dimensional network.

[Properties of synthesized CdS nanoparticles by reverse micelle method].

Micelle system with reverse phase (water/CTAB/n-hexyl alcohol/n-heptane) is a weenie liquid-globelet of surface active agent molecule which can be stably and uniformly dispersed in continuous oil medium. The micelle system with reverse phase can work as a "micro-reactor" to synthesize CdS nano-particle with excellent performance. In the present article considering the effects of W value (W= [water]/[surface agent]) of the micelle system with reverse phase, we observed that the ratio of [Cd2+] and [S2-] ions to the original concentrations of the Cd2+ and S2- ions can affect the luminescent properties of CdS nano-particle.

Poly[[μ(4)-naphthalene-1,4-dicarboxyl-ato-κO:O':O'':O'''-μ(2)-naphthalene-1,4-dicarboxyl-ato-κO,O':O'',O'''-bis-(2-phenyl-1H-1,3,7,8-tetra-azacyclopenta-[l]phenanthrene-κN,N)dimanganese(II)] N,N-dimethyl-formamide solvate].

One of the two 1,4-dicarboxyl-ate dianions in the title compound, [Mn(2)(C(12)H(6)O(4))(2)(C(19)H(12)N(4))(2)]·C(3)H(7)NO, uses its two carboxyl-ate groups to chelate two N-heterocycle-chelated Mn atoms; the other 1,4-dicarboxyl-ate dianion binds to four such metal centers. The octa-hedrally coordinated Mn atoms are linked through the two dianions into a layer motif; the dimethyl-formamide mol-ecules occupy the spaces between adjacent layers. Ten C atoms and attached H atoms of one dianion are disordered equally over two positions.

catena-Poly[[[bis-[4-(1H-1,3,7,8-tetra-azacyclo-penta-[l]phenanthren-2-yl)phenol-κN,N]manganese(II)]-μ-naphthalene-1,4-dicarboxyl-ato-κO:O] naphthalene-1,4-dicarboxylic acid hemisolvate monohydrate].

The 1,4-dicarboxyl-ate dianions in the title compound, [Mn(C(12)H(6)O(4))(C(19)H(12)N(4)O)(2)]·0.5C(12)H(8)O(4)·H(2)O, bond to two 4-(1H-1,3,7,8-tetra-azacyclo-penta-[l]phenanthren-2-yl)phenol-chelated Mn atoms to form a chain that features the metal atom in an octa-hedral coordination geometry. Adjacent chains inter-act with the uncoordinated water mol-ecules to form a three-dimensional network.