巻号一覧
17 巻 (1961 - 1962)
- 4 号 p. 127-
- 3 号 p. 85-
- 2 号 p. 43-
- 1 号 p. 1-
17 巻, 1 号
選択された号の論文の8件中1～8を表示しています
- |<
- <
- 1
- >
- >|
-
内島 善兵衛, 大沼 一已1961 年 17 巻 1 号 p. 1-8
発行日: 1961/08/30
公開日: 2010/02/25
ジャーナル フリーThe main purpose in this paper is to make clear the characteristic feature in heat balance of the warming channel which has been constructed for preventing the damage introducing on the paddy plant by application of the cool irrigation water. The observations on heat balance and water temperature in the warming channel were carried out at Fuseko warming channel located in the suburb of Obihiro city during the period from 17 to 20 of July 1960.
The results obtained from heat balance analysis of the data may be summarized as follows:
1: The heat balance of warming channel is presented in Table 2. The total heat amount supplied in unit water column during the day (0500-0500) is ranging between 400 and 680ly/day. This amount highly depends upon the net radiation over the water surface. As shown in Table 2, the characteristics in heat balance vary with distance from the inlet of channel. The net radiation plaies the great part in temperature rising of cool water in channel. The daily means of sensible heat transfer coefficient lay between 0.76×10-4 and 2.35×10-4C. G.S. and are in good agreement with values obtained by the present authors.
2: The diurnal variation of heat balance terms in channel is shown in Fig. 3. The diurnal variation of heat amount (Bw+Bp) carring out from water column is more slight than those of other heat balance terms. The sensible heat flux increases with increment of wind velocity in the day time. The examples of them showing the diurnal variation of sensible heat transfer coefficient are presented together with those obtained from the author's and _??__??__??__??__??__??_'s empirical formulae, and a good agreement in general tendency is shown between them.
3: The diurnal variation of water temperature at arbitrary distance from inlet of channel is determined by Eq(6). It is known from Eq(6) that the diurnal variation of water temperature depends considerably upon the diurnal variations of final-water temperature determined by both of the meteorological condition and of the water depth, and water temperature at inlet, and the parameter of x/v. The results on comparing of the diurnal variation calculated from Eq(6) with observed those are shown in Fig 6, and the diurnal courses are in good agreement with each other.抄録全体を表示PDF形式でダウンロード (1153K) -
斎藤 隆幸1961 年 17 巻 1 号 p. 9-14
発行日: 1961/08/30
公開日: 2010/02/25
ジャーナル フリーLaboratory calibration of Beckman-Whitley's long wave radiometer was carried out by using two radiators of the Dines type, as shown in Fig, 1. Of these radiators, the surface temperature of one is near the room temperature, about 10°C, the other about 20-45°C. Let the temperature of the surface be T1 and T2, the electric motiv force V and V′, then have
(1-ε)⋅κ⋅a⋅σ(T14-T24)=k⋅(V-V′),
where ε is an absorptivity of water vapour and CO2 in the wooden box, a is blackness of radiator, κ is a constant depending upon the solid angle of the radiator seen from the element. k is the calibration constant, and obtained from Fig. 2.
These value of k is significant for the column radiation from the upward. However, a value for the total radiation from all parts on the hemisphere is desired in the measurement of atmospheric radiation. Assuming the relative value of absorptivity of the receiver surface depended on the direction of incident radiation and intensity of the atmospheric radiation from each direction, we can obtain a value required, that is larger than the value obtained from Fig. 2.抄録全体を表示PDF形式でダウンロード (916K) -
大沼 一已1961 年 17 巻 1 号 p. 15-20
発行日: 1961/08/30
公開日: 2010/02/25
ジャーナル フリーThis paper aims to clarify the micrometeorological characteristics and heat balance of the nursery beds covered with polyethylene film and oil paper. The transmissivity of solar radiation, temperature and amont of evaporation in these nurseries were observed and compared with the naked one.
Following results were derived through the observations:
(1) The air temperature in the polyethylene nursery was 5.5°C less in fine weather or 2°C less in average of the whole term observed than that of the oil paper nursery.
(2) These results were caused by the fact that transmissivity of solar radiation in the polyethylene nursery was a little bit less than that in the oil paper one, i.e. the former was 50-60 per cent and the latter 57-60 per cent. In spite of the better transparency of the polyethylene film, the decrease in transmissivity of film is caused from reflection of water drops adhered to the inside of polyethylene film.
(3) Referring to the amount of evaporation, the oil paper nursery amounted to 1/5th less, comparing with the naked one, and evaporation could not be observed in the polyethylene nursery.
(4) As a result, the sensible heat flux reached to the maximum in the polyethylene nursery with a range from 228 to 319ly/day, being followed by the oil paper and with a range from 201 to 285. The amount in the naked nursery showed the least, with a rang from 34 to 64. the ratio of latent heat flux to sensible heat flux were 1:4 in the oil paper nursery and 7:1 in the naked nursery.
(5) It seems that the heat transfer in the space formed between the polyethylene cover and the soil surface is attributed to the molecular conductivity, accompanyed with the water vapor that affected it as a mediator.抄録全体を表示PDF形式でダウンロード (953K) -
1961 年 17 巻 1 号 p. 20-20,38
発行日: 1961/08/30
公開日: 2010/02/25
ジャーナル フリーPDF形式でダウンロード (266K) -
第2報 青森県における気象の地域性 第3報 青森県における水稲生育と気象との関連性阿部 亥三, 小野 清治, 和田 純二, 鳥山 国士1961 年 17 巻 1 号 p. 21-29
発行日: 1961/08/30
公開日: 2010/02/25
ジャーナル フリーThe authors carried out the experiments in 1957, 1958 and 1959 to make clear the relationships between the regionality of climate and the growth of rice plant in Aomori Prefecture.
Twenty places as shown in Fig. 1 were selected for the purpose of this experiments.
1) Regional differences of climates were larger in 1957 and 1959 (prevailed cool summer) than in 1958 (prevailed warm summer) and, generally speaking, the similar tendencies were observed on the growth and yield of rice plant.
2) Regional differences of rice growth pattern concerning with the regional differences of cilmate were observed in four points, namely, the rooting ability of seedling, the heading dates of rice, the ripening periods and the weight of 1, 000 grains throughout three years' observations. The correlation coefficients between the accumulated air temperature of each place and the growth of rice plant of the same place showed the close relationship.
3) In those destricts of seashore and high-land, it was observed that the heading dates were retarded, 1, 000 grains weight were decreased and consequently, the yield were also decreased comparing to those of the inner destrict places.抄録全体を表示PDF形式でダウンロード (1369K) -
果梗の頂基部の強度と果実の風の抵抗飯塚 一郎1961 年 17 巻 1 号 p. 30-32
発行日: 1961/08/30
公開日: 2010/02/25
ジャーナル フリーThis study was made to investigate the pulling strengths between fruits and their stalks, and the resistance of fruits to wind in various fruits.
Among the pulling strengths between the shoots and the fruit stalks which were pulled towards different directions, the strength pulled towards basal direction was weahest, and followed, in order, by tangential, apical and radical direction. And also the pulling strengths among the various fruits were weak in following order: Japanese pear, apple, peach, fig, but in the case of the Unshu and persimmon fruits, the pulling strength could not be measured because their stalks had been broken in the middle by pulling. The pulling strength between the fruits and their stalks was weakest in the peach fruits, but strongest in the fig fruits.
The resistance of the various fruits to wind had tendency to increase in proportion to the cross sectional area of fruits, and increased slowly and proportionally with increasing wind velocity, moreover increased very rapidly when wind velocity reached more than 16 meters per second. The resistance of Japanese pear fruits bagged with news paper bags was five to eight times stronger than unbagged fruits.
If the wind velocity at which wind drops the bagged Japanese pear fruits is estimated from the data measured, these fruits will drop when the wind velocity rises over 17m/s.
If the velocity of fruits themselves, when blown by the wind and cut off stalks, shoots colliding with each other, is estimated, this velocity will be 0.45m/s for peach fruits, 0.31 for apple, and 5.5 for persimmon, respectively.抄録全体を表示PDF形式でダウンロード (417K) -
西内 光1961 年 17 巻 1 号 p. 33-35
発行日: 1961/08/30
公開日: 2010/02/25
ジャーナル フリーPDF形式でダウンロード (504K) -
木村 吉郎1961 年 17 巻 1 号 p. 36-38
発行日: 1961/08/30
公開日: 2010/02/25
ジャーナル フリーPDF形式でダウンロード (452K)
- |<
- <
- 1
- >
- >|