Elemental composition of lunar surface material

Elemental abundances, so far obtained, derived from the analysis of Apollo 11 lunar material are reported. Similarities and differences exist between lunar material, the eucritic achondrites, and the augite achondrite Angra dos Reis, the analysis of which is also reported.     

The structure and symmetry of crystalline solid solutions: a general revision

Mixed single crystals composed of host and guest organic molecules of similar structures and shapes are shown to comprise sectors with different host-guest distributions and to have symmetries lower than that of the host crystal. These properties are determined by the structure of the guest and the surface structures of the crystal faces through which the guest molecules are occluded. This general concept is illustrated by studies of three mixed crystal systems,(E)-cinnamamide-(E)-2-thienylacrylamide, (E)-cinnamamide-(E)-3-thienylacrylamide, and(S)-asparagine-(S)-aspartic acid, with x-ray and neutron diffraction and solid-state photochemistry.     

种植深度对高粱出苗及苗势的影响

在墨西哥东北部的干旱和半干旱地区,人类食物和动物饲料最重要的作物是玉米、菜豆和高粱,因而这些作物良好的成苗显得非常重要(Maiti等,1984)。田间观察到的主要问题是受种子质量,不利气候条件和粗放田间管理所影响的种子质     

Effect of a Barley Breakfast Cereal on Blood Glucose and Insulin Response in Normal and Diabetic Patients

Prowashonupana (Prowash) is a shrunken-endosperm, short awn, waxy starch, hulless barley with low starch, high fiber, high protein, and a relatively high concentration of free sugars. The study was designed to compare equivalent breakfast meals (w/w) of Prowash and oatmeal for glycemic response in diabetic and non-diabetic subjects. A commercial liquid meal replacer (LMR) was included as a reference standard. A substantial reduction of the post-prandial glycemic peak following ingestion of Prowash was observed as compared to LMR or oatmeal. In the non-diabetic subjects, the maximal rise in glucose from baseline was 26.3± 3.9 mg/dL after LMR, 41.3± 3.9 mg/dL after oatmeal and 6.4± 2.7 mg/dL after Prowash (p < 0.01). The maximal increase in glucose in the diabetic patients was 69.9± 4.5 mg/dL after LMR, 80.8± 8.8,mg/dL after oatmeal and 28.4± 3.5 mg/dL after Prowash (p < 0.01). The maximal increase in insulin post-LMR was 33.9± 3.6 mIU/ml in the diabetic patients and 54.0± 9.8,mIU/ml in the non-diabetic controls. Oatmeal elicited a maximal insulin increase of 29.9± 4.2, mIU/ml in the control subjects and 21.4± 2.5 mIU/ml in the diabetic patients. In contrast, the maximal insulin increase after Prowash was 8.6± 1.5 mIU/ml in the non-diabetic controls and 6.8± 1.2 mIU/ml in the diabetic patients (p < 0.01).     

上海创意农业发展探讨

分析了上海创意农业发展的现状和存在的问题,提出了推进上海创意农业发展的若干建议。