Non-hygroscopic water-soluble crystals of ammoniumd-l0-camphorsulfonate(ACS) were prepared and proposed as a practical secondary standard substance for the calibration of circular dichroism (

The crystal structure and morphology of the Nd-rich phase in postannealed sintered Nd–Fe–B hard magnets were investigated by transmission electron microscopy (TEM). The Nd-rich phase at grain boundaries thinner than about 2nm was found to be amorphous; as the boundary region broadened, it assumed a face-centered cubic (fcc) structure with a≈0.54nm; eventually, the selected area diffraction pattern exhibited systematically allowed superlattice spots, revealing that the Nd-rich phase belongs to the space group Ia3¯ with a≈1.1nm. The elemental analysis of the Nd-rich phase showed that it contains a considerable amount of oxygen. These findings indicate that the Nd-rich phase with a≈1.1nm is in fact isostructural to cubic Nd2O3 (Mn2O3 structure). We also found Nd-rich fcc precipitates (a≈0.54nm) of several ten to hundred nm inside the Nd2Fe14B grains. Both intergranular and intragrain Nd-rich phases possess simple orientation relationships with the matrix Nd2Fe14B phase, such as (111)Nd2Fe14B‖(111)Nd-rich [2¯11]Nd2Fe14B‖[2¯11]Nd-rich and (010)Nd2Fe14B‖(111)Nd-rich [001]Nd2Fe14B‖[1¯10]Nd-rich. Our Lorentz TEM observation suggested that the intragrain Nd-rich precipitates frequently disrupt magnetic domain wall arrangements, and that the magnetic interactions across thin amorphous Nd-rich phase are dominated by a simple dipole interaction.

SummaryThe influxes from the mucosal solution to the enterocytes were investigated for glycylglycine, glycyl-[.-leucine, and their constituent amino acids in isolated intestinal segments from suckling (3 to 4 days), weanling (10 to 14 days), and adult guinea pigs. Glycine and L-leucine influxes from the mucosal solution containing free glycine or I.-leucine were not significantly different between sucklings and adults in either the jejunum or the ileum. On the other hand, glycylglycine and glycyl-L-leucine influxes were significantly greater in the following sequence: sucklings > weanlings > adults.Such age-dependent difference in dipeptide influx was more prominent in the jejunum than in the ileum. Kinetically, such develop mental change in dipeptide influx was found to be related to the change in the value of J,, (the maximum influx). The data indicated that the intact-peptide transfer mechanism has more important significance in protein hydrolysate absorption in immature stages of animals than in adults.

A 10-year-old castrated male miniature dachshund was presented with an abdominal mass. The dog had a history of splenectomy. Triple-phase helical computed tomography was utilized, revealing a hepatic mass and multiple intra-abdominal solid masses. In triple-phase helical computed tomography the images, hepatic mass and two of four intra-abdominal masses were heterogenous in all phases. Therefore, we diagnosed a malignant hepatic tumor and presumed intra-abdominal metastases. The masses were surgically removed and were histologically composed of normal spleen tissues, findings which were consistent with ectopic spleen.