[en] The effects of leaf movement of peanut on radiation interception were examined. A peanut cultivar (c.v. Nakateyutaka) was planted at three planting densities (20, 30 and 40 cm equidistant spacings). In the treatment plots, the upper layer of the canopy was covered horizontally with a nylon net to restrain the movement of the leaflets. Intercepted radiation of each leaflet was measured by integrated solarimeter films for two consecutive days. It was observed that the leaflets of the upper layer oriented paraheliotropically to the sun rays in midday. Intercepted radiation per unit leaf area and unit ground area of the control were larger in the 20 cm pacing, almost similar in the 30 cm spacing and smaller in the 40 cm spacing as compared with the treatment. The leaf movement of the upper layer of the canopy played a significant role in radiation interception in the 20 cm plot, no discernible effect in the 30 cm plot and a rather adverse role in the 40 cm plot. Leaf area of the 20 cm spacing was concentrated densely at the upper layer. Leaf area of the 30 and 40 cm spacing was larger at the middle layers. It was assumed that effectiveness of the leaf movement of the upper layer would depend mainly on spatial leaf area distribution and density

[en] Results are presented of optical absorption of LiCl crystals uncolored and colored with ₆₀Co gamma radiation. Measurements have been carried out at 80 K in the spectral range from violet to the fundamental absorption edge

[en] Optical dichroic absorption spectra of reactor neutron irradiated LiCl crystals are presented and discussed. The absorption band is attributed to the Vsub(N) center. The Cl₂^- molecular ion associated with two positive ion vacancies in the nearest sites is proposed as a model for the Vsub(N) center. It was found that the Vsub(N) center decayed gradually at about 185 K

[en] The effects of the leaf movement on radiation interception were examined by a treatment which restrained the leaf movement in the upper layers of the canopy. Two determinate soybean cultivars with different canopy structures (c.v. Nanbushirome and Miyagishirome) were grown at two planting densities in the field. A pot experiment was also used to evaluate radiation interception under the conditions of no mutual shading. Intercepted radiation of every leaflet of two plants within the canopy and one plant in the pot experiment was measured by the integrated solarimeter films for two consecutive days. The amount of intercepted radiations per unit ground area in the treatments were larger than those in the controls of both cultivars and indicated the ineffectiveness of the leaf movement on radiation interception. In general, Nanbushirome intercepted larger amount of radiation in every layer of the canopy in both field and pot experiments. The differences between the control and the treatment in Nanbushirome were large as compared with Miyagishirome. The leaf temperature of the uppermost layer of the canopy in Nanbushirome was higher than the air temperature in the treatment, whereas it was at par with the air temperature in the control. The leaflets of the upper layer moved paraheliotropically to the sum rays during most of day time, it was therefore assumed that the leaf movement would regulate leaf temperature

[en] The photoconductivity of boron doped a-SiN_x:H(x=0.07) has been studied by steady state secondary photocurrent, xerographic photodischarge, the time of flight measurement, and ESR. The dominant carrier of the photocurrent in a-SiN_x:H is found to be electron. The μtau product of the electron decreases with increasing doping amount of boron, while that of the hole increases and becomes larger than 10^-8cm²/V. From these results it is found that the life time of the hole becomes longer with increasing the amount of doping boron. The intensity of the ESR signal due to the neutral dangling bonds decreases monotonically with doping boron, and this decrease of the neutral dangling bond density is considered to be due to not only change of the occupation statistics, but mainly to the chemical or electrical interaction between boron and nitrogen

[en] This paper reports direct formation of Y₁Ba₂Cu₃O_7-x films on Cu substrates by electrophoretic deposition. Electrophoretic deposition was carried out using presintered Y₁Ba₂Cu₃O_7-x powder dispersed in distilled acetone. The deposited films were annealed in air at 900 degrees C. The authors succeeded in obtaining superconducting Y₁Ba₂Cu₃O_7-x films on Cu substrates. The films on Cu plates and Cu film/YSZ exhibited zero resistance state at 66 K and 76 K respectively. Interfacial chemical reactions at the Y₁Ba₂Cu₃O_7-x/Cu interface are discussed. The achievement of the zero resistance state is considered to be due to the reduction of the interfacial reactions