N′-(3-Fluoro­benzyl­idene)-4-hy­droxy-3-meth­oxy­benzohydrazide methanol monosolvate

In the title compound, C15H13FN2O3·CH3OH, the dihedral angle between the benzene rings of the benzohydrazone mol­ecule is 5.3 (3)°. The C atom of the meth­oxy group is almost coplanar with its attached ring [deviation = 0.017 (2) Å]. The r.m.s. deviation of the 21 non-H atoms of the hydrazone mol­ecule is 0.106 Å. In the crystal, the components are linked by Om—H⋯Oh, Nh—H⋯Om and Oh—H⋯Oh (m = methanol and h = hydrazone) hydrogen bonds, forming (001) layers

Calorific values and ash contents of different organs of Masson pine (Pinus massoniana) in southern China

Calorific values of plants are important indices for evaluating and reflecting material cycle and energy conversion in forest ecosystems. Based on the data of Masson Pine (Pinus massoniana) in southern China, the calorific values (CVs) and ash contents (ACs) of different plant organs were analyzed systematically using hypothesis test and regression analysis in this paper. The results show: (i) the CVs and ACs of different plant organs are almost significantly different, and the order by AFCV (ash-free calorific value) from the largest to the smallest is foliage (23.55 kJ/g), branches (22.25 kJ/g), stem bark (21.71 kJ/g), root (21.52 kJ/g) and stem wood (21.35 kJ/g); and the order by AC is foliage (2.35%), stem bark (1.44%), root (1.42%), branches (1.08%) and stem wood (0.33%); (ii) the CVs and ACs of stem woods on top, middle and lower sections are significantly different, and the CVs are increasing from top to lower sections of trunk while the ACs are decreasing; (iii) the mean GCV (gross calorific value) and AFCV of aboveground part are larger than those of belowground part (roots), and the differences are also statistically significant; (iv) the CVs and ACs of different organs are related, to some extent, to diameter, height and origin of the tree, but the influence degrees of the factors on CVs and ACs are not the same

2-[(E)-(Dimethylamino)methylene­amino]-N-phenylbenzenesulfonamide. Corrigendum

Corrigendum to Acta Cryst. (2007), E63, o4446