خيارات البحث
النتائج 1 - 10 من 1,216
Monensin concentration in some organs of farm animals determined by the bioautographic method
1987
Hera, A. | Billova, V. (Ustav pro Statni Kontrolu Veterinarnich Biopreparatu a Leciv, Brno (Czechoslovakia))
Application of the mechanocardiopolygram in cattle: Comparison of STIs and the value determined by the surgical cardiac function test
1987
Sato, T. (Yamagata-ken. Government Office (Japan)) | Kurita, T. | Okada, D. | Koyama, H. | Mitani, S. | Uchino, T. | Motoyoshi, S.
A comparison of the rate of maintenance respiration in some crop legumes and tobacco determined by three methods النص الكامل
1987
Irving, D.E. | Silsbury, J.H.
Carbon exchange was measured on whole plants of field bean, lucerne, chick pea, kidney bean, pea and tobacco. The maintenance respiration rate was measured in three ways: (i) by allowing the CO2 efflux to decay in prolonged darkness to an asymptotic value which was then taken to be the maintenance value (the dark decay method); (ii) by plotting the dark CO2 efflux as a function of the net CO2 uptake over a range of irradiances and taking maintenance as the dark CO2 efflux when the net CO2 uptake was zero (the dynamic method); and (iii) by plotting the total CO2 uptake as a function of the growth rate and taking maintenance respiration as the CO2 efflux when the growth rate was zero (the zero growth rate method). The range of values for the maintenance coefficient over all species was from 1.6 to 2.1 per cent of the dry weight per day, 1.8 to 2.1 per cent and 2.7 to 2.9 per cent as determined by these three methods respectively. There was a linear relationship, common to all species, between the maintenance respiration rate (dark decay method) and dry weight, total nitrogen and the organic nitrogen content. The growth coefficient (0.69±0.01) was the same for field bean, chick pea and lucerne and was unaffected by the method of estimation. It was concluded that the dark decay method provided the best estimate of the minimal maintenance requirements in the plants studied.
اظهر المزيد [+] اقل [-]Spring migration of masu salmon (Oncorhynchus masou) as determined by the tagging experiments performed in Shizugawa bay, the east coast of Hohshu, Japan
1987
Kiso, K. (Tohoku Regional Fisheries Research Lab., Shiogama, Miyagi (Japan)) | Kumagai, I. | Kaeriyama, M.
The balance of supplied nitrogen in soil and plant determined by means of 15N in winter wheat with use of a nitrification inhibitor
1987
Mouchova, H. | Apltauer, J. (Vyzkumny Ustav Rostlinne Vyroby, Prague-Ruzyne (Czechoslovakia)) | Lippold, W. | Matzel, W.
Calcium an,d magnesium localization, as determined by the K+pyroantimonate method and X-ray microanalysis in the shore crab cuticle during the moult cycle النص الكامل
1987
Compère, Philippe | Morgan, A. John | Winters, Carol | Goffinet, Gerhard
Calcium an,d magnesium localization, as determined by the K+pyroantimonate method and X-ray microanalysis in the shore crab cuticle during the moult cycle النص الكامل
1987
Compère, Philippe | Morgan, A. John | Winters, Carol | Goffinet, Gerhard
peer reviewed
اظهر المزيد [+] اقل [-][Characteristics of the drainage network and land form of three soils of the state of Sao Paulo, determined in air photographs and planialtimetric charts]
1987
Lima, S.L. de
Caracteristicas da rede de drenagem e do relevo de tres solos do estado de Sao Paulo, determinadas em fotografias aereas e cartas planialtimetricas.
1987
Lima S.L. de
Force relationship in the draw bars of the three-point hitch of tractors determined by laboratory and field measurements with respect to the function of force regulation
1987
Bauer, F. (Vysoka Skola Zemedelska, Brno (Czechoslovakia))
