トマト栽培温室における空気熱源式ヒートポンプの冷房運転の動作特性とマルチによる夜間冷房負荷軽減効果

We tested the performance of an air-to-air heat pump (HP) for both daytime and night-time cooling of a tomato greenhouse, and we investigated the effect of mulch on the night-time cooling load. After 1-1.5 h, when the power consumption of the HP became constant, the inside and soil temperatures were lowest in the treatment with flash-spun mulch (Dupont Tyvek), as the mulch decreased the soil heat flux (Q_s). The range of reductions in Q_s, enthalpy (h_in), absolute humidity, and relative humidity were largest in the white-black mulch (WB) treatment when the HP power consumption had stabilized. The differences in the enthalpy (△h_hp) and the absolute humidity between the outlet and inlet of the HP decreased in the order of Tyvek > white-black mulch (WB) > control, but the difference in the inside temperature decreased in the order of WB > control > Tyvek. Before cooling started, the soil temperature and Q_s decreased in the order of Tyvek > WB > control. Q_s was almost constant during the daytime in the mulch treatments. The mulch seemed to stop the daytime rise in soil temperature and the night-time Q_s from the soil to the greenhouse, thus reducing the night-time cooling load. The power consumption of the HP during cooling rose moderately as △h_hp increased and rose sharply when △h_hp exceeded about 14 kJ・kg\u27^1. Under continuous operation of the HP, the inside temperature and h_in were maintained at about 23℃ (cooling set point) and 58 kJ・kg\u27^1, respectively, when Q_s was between about -20 and -40 W・m^2 and solar radiation was between about 260 and 330 W・m^2. The inside enthalpy was about 71 kJ・kg\u27^1 when the inside temperature was 27℃ (set point for ventilation)

Effect of corporal-punishment-elimination education at Nippon Sport Sci-ence University : Comparison of students’ choice of extracurricular club activities and affiliated events

The present study examined the effects of the educational method adopted by Nippon Sport Science University for elimination of corporal punishment. Specifically, a survey was conducted on “Corporal Punishment” for the freshmen who entered the university in April 2016 and the 2nd–4th graders. Students were grouped into two: 1st graders and 2nd–4th graders. An analytical examination was made on what type of “Corporal Punish-ment” they received during their athletic activities and whether they perceived the presence (or absence) of the “Effect of Corporal-Punishment-Elimination Education.” Differences were observed between the two groups based on their choice of participation in club activities and affiliated events

肝疾患における血中α-Fetoproteinの臨床的意義に関する研究

Article信州医学雑誌 21(1): 25-36(1973)journal articl