## Abstract The relation between renal length (L) and the distance between the first four lumbar transverse processes, (4TP) as measured by sonography and intravenous urography, has been studied in 20 adults with normal urograms. The ratio of L/4TP (Mean Β± 2.S.D.) was 1.04 Β± 0.22 for sonograms and
A simple method of assessing relative irrigation requirements
β Scribed by J. Lomas
- Publisher
- Elsevier Science
- Year
- 1964
- Weight
- 406 KB
- Volume
- 1
- Category
- Article
- ISSN
- 0002-1571
No coin nor oath required. For personal study only.
β¦ Synopsis
Experimental
work in a number of countries has established certain relationships between water loss from crops and that from the U.S. Weather Bureau class A pan.
Yet, the practical usefulness of such work is limited to conditions of potential evapotranspiration, conditions which do not exist in the field. Until "crop constants" are available for conversion of class A pan data into cubic meters of irrigation water, a simple qualitative approach seems possible. In view of the inaccuracies inherent in field irrigation, such a guide would meet practical irrigation requirements.
It is, therefore, suggested that routine application of irrigation is modified according to evaporation measurements from class A pans.
METHODS
π SIMILAR VOLUMES
Left ventricular stroke distance was measured by Doppler ultrasound in 10 doxorubicin-treated and 10 control patients. Measurements were made 10 min, 2 h and 4 h after drug administration. Stroke distance (a linear analogue of stroke volume) increased significantly from 12.6 cm (S.D. 2.7) before and
## ABSTRACT Most designers of simple pressure water delivery systems for irrigation purposes use very simple empirical pipe selection methods based on arbitrary concepts (unit head loss, velocity, and per cent head loss methods), without taking into account economic criteria. These methods do not l
## Abstract A method for calculating MarkβHouwink parameters from intrinsic viscosity, size exclusion, and numberβ or weightβaverage molecular weight data using basic definitions was presented. Polydispersity is not an issue and no calibration curve is required as long as all of the aforementioned