2002 Ruby Yearbook

A digitized copy of the 2002 Ruby, the Ursinus College yearbook.https://digitalcommons.ursinus.edu/ruby/1105/thumbnail.jp

2000 Ruby Yearbook

A digitized copy of the 2000 Ruby, the Ursinus College yearbook.https://digitalcommons.ursinus.edu/ruby/1103/thumbnail.jp

電解生成水及びRO水の花巻およびスープストックへの適用

Alkaline electrolyzed water, acid electrolyzed water, reverse osmosis water (RO water), and tap water are used, and they are hanamaki and soup stock was prepared. About the hanamaki, fracture hardness and an organoleptic test were conducted and it examined which water is suitable. As a result, the clear difference by sample water was looked at by neither hardness nor the taste in the hanamaki. The soup stock was measured for the content of a nucleic acid system substance and free amino acid, and the color of soup and an organoleptic test were examined to see which water is suitable. The acid electrolyzed water which had extracted most mostly the content of inosinic acid and free amino acid. The organolepcit test was carried out to find which was the most delicious

Physical and chemical effects of ingested plastic debris on short-tailed shearwaters, Puffinus tenuirostris, in the North Pacific Ocean

We investigated the plastics ingested by short-tailed shearwaters, Puffinus tenuirostris, that were accidentally caught during experimental fishing in the North Pacific Ocean in 2003 and 2005. The mean mass of plastics found in the stomach was 0.23 g per bird (n = 99). Plastic mass did not correlate with body weight. Total PCB (sum of 24 congeners) concentrations in the abdominal adipose tissue of 12 birds ranged from 45 to 529 ng/g-lipid. Although total PCBs or higher-chlorinated congeners, the mass of ingested plastic correlated positively with concentrations of lower-chlorinated congeners. The effects of toxic chemicals present in plastic debris on bird physiology should be investigated

Facilitated Leaching of Additive-Derived PBDEs from Plastic by Seabirds’ Stomach Oil and Accumulation in Tissues

Our previous study suggested the transfer of polybrominated diphenyl ether (PBDE) flame retardants from ingested plastics to seabirds’ tissues. To understand how the PBDEs are transferred, we studied leaching from plastics into digestive fluids. We hypothesized that stomach oil, which is present in the digestive tract of birds in the order Procellariiformes, acts as an organic solvent, facilitating the leaching of hydrophobic chemicals. Pieces of plastic compounded with deca-BDE were soaked in several leaching solutions. Trace amounts were leached into distilled water, seawater, and acidic pepsin solution. In contrast, over 20 times as much material was leached into stomach oil, and over 50 times as much into fish oil (a major component of stomach oil). Analysis of abdominal adipose, liver tissue, and ingested plastics from 18 wild seabirds collected from the North Pacific Ocean showed the occurrence of deca-BDE or hexa-BDEs in both the tissues and the ingested plastics in three of the birds, suggesting transfer from the plastic to the tissues. In birds with BDE209 in their tissues, the dominance of BDE207 over other nona-BDE isomers suggested biological debromination at the meta position. Model calculation of PBDE exposure to birds based on the results of the leaching experiments combined with field observations suggested the dominance of plastic-mediated internal exposure to BDE209 over exposure via prey