DSpace Collection: 2017-3-15
http://hdl.handle.net/2115/64695
2017-3-152024-03-29T06:31:44Zトクビレ科ヤギウオPallasina barbata(Steindachner,1876)の繁殖生態と形態発育
http://hdl.handle.net/2115/64697
Title: トクビレ科ヤギウオPallasina barbata(Steindachner,1876)の繁殖生態と形態発育
Authors: 百田, 和幸; 宗原, 弘幸
Abstract: Aspects of the reproductive ecology and early life history of the tubenose poacher Pallasina barbata(Steindachner,1876) were clarified based on observations on the development of eggs without artificial insemination and on morphological changes of larvae and juveniles. The reproductive mode was identified as internal gametic association, which has been reported in several cottoids. The inferred spawning periods and hatching periods were May and March, respectively, suggesting the embryonic period lasted 10 months, which is near the longest known among the Agonids. The eggs were found in the sponge Mycale adhaerens. Newly-hatched larvae were in the flexion stage, and the notochord length(NL) was 7.3mm. In the flexion larvae stage, two white spots occurred in the dorsal finfold, which have not been reported in larvae of other Agonids. Extension of the snout and protrusion of the lower jaw barbel began from 11.7mm NL at post-flexion. At 20.2mm standard length(SL), the finfold had disappeared, and all the fin ray number attained the fixed number. The scale number of bony plates reached the same number as in the adult at 28.7mm SL.2017-03-14T15:00:00Z百田, 和幸宗原, 弘幸Aspects of the reproductive ecology and early life history of the tubenose poacher Pallasina barbata(Steindachner,1876) were clarified based on observations on the development of eggs without artificial insemination and on morphological changes of larvae and juveniles. The reproductive mode was identified as internal gametic association, which has been reported in several cottoids. The inferred spawning periods and hatching periods were May and March, respectively, suggesting the embryonic period lasted 10 months, which is near the longest known among the Agonids. The eggs were found in the sponge Mycale adhaerens. Newly-hatched larvae were in the flexion stage, and the notochord length(NL) was 7.3mm. In the flexion larvae stage, two white spots occurred in the dorsal finfold, which have not been reported in larvae of other Agonids. Extension of the snout and protrusion of the lower jaw barbel began from 11.7mm NL at post-flexion. At 20.2mm standard length(SL), the finfold had disappeared, and all the fin ray number attained the fixed number. The scale number of bony plates reached the same number as in the adult at 28.7mm SL.イカ内蔵のカドミウム除去に用いるキレート樹脂のカドミウム吸脱着特性
http://hdl.handle.net/2115/64696
Title: イカ内蔵のカドミウム除去に用いるキレート樹脂のカドミウム吸脱着特性
Authors: 杉崎, 篤; 喜多, 壮太; 丸山, 英男; 関, 秀司
Abstract: Characteristics of the cadmium adsorption and desorption of a chelating resin CR11 was studied. The Langmuir adsorption model modified for the competitive adsorption of cadmium ion and hydrogen ion was applied to describe the effect of pH on the cadmium adsorption of the chelating resin. The adsorption model well described the experimental data and the maximum adsorption capacity and the adsorption constants of cadmium ion and hydrogen ion were determined. The cadmium desorption efficiency form the chelating resin by an eluent(HCI solution) could also be predicted by the adsorption model. The cadmium removal from the eluent by electrolysis was examined for the reuse of the eluent in the regeneration process of chelating resin. The experimental data well followed the pseudo-first order kinetic model and the kinetic constant was determined. The kinetic constant increased with the increase of electric current up to 0.13 A.2017-03-14T15:00:00Z杉崎, 篤喜多, 壮太丸山, 英男関, 秀司Characteristics of the cadmium adsorption and desorption of a chelating resin CR11 was studied. The Langmuir adsorption model modified for the competitive adsorption of cadmium ion and hydrogen ion was applied to describe the effect of pH on the cadmium adsorption of the chelating resin. The adsorption model well described the experimental data and the maximum adsorption capacity and the adsorption constants of cadmium ion and hydrogen ion were determined. The cadmium desorption efficiency form the chelating resin by an eluent(HCI solution) could also be predicted by the adsorption model. The cadmium removal from the eluent by electrolysis was examined for the reuse of the eluent in the regeneration process of chelating resin. The experimental data well followed the pseudo-first order kinetic model and the kinetic constant was determined. The kinetic constant increased with the increase of electric current up to 0.13 A.