Water-Soluble Phosphates

You\u27ve been hearing more and more about water solubility in phosphorus fertilizers within the past few years. Some folks may have wondered whether water solubility- the actual ability to dissolve in water- is actually important or of value. And if water solubility is good in phosphorus fertilizers, when is this factor important

Gust Generator for a Supersonic Wind Tunnel

The effectiveness was investigated of a flat plate gust generator that was located in the nozzle throat of the Lewis 10- by 10-foot supersonic wind tunnel. Gust plates were tested at nozzle wall Mach numbers of 3.1, 2.4, and 2.0. Test results show that the flat plate concept may be used as a gust generator for a wind tunnel; however, more extensive investigation is required to completely define its capabilities and limitations. For the single transient data point recorded, a gust amplitude (decrement) of 0.15 in Mach number was obtained. Analysis of these transient data indicates a response with a corner frequency of at least 8 hertz

Limited access orders in the developing world :a new approach to the problems of development

The upper-income, advanced industrial countries of the world today all have market economies with open competition, competitive multi-party democratic political systems, and a secure government monopoly over violence. Such open access orders, however, are not the only norm and equilibrium type of society. The middle and low-income developing countries today, like all countries before about 1800, can be understood as limited access orders that maintain their equilibrium in a fundamentally different way. In limited access orders, the state does not have a secure monopoly on violence, and society organizes itself to control violence among the elite factions. A common feature of limited access orders is that political elites divide up control of the economy, each getting some share of the rents. Since outbreaks of violence reduce the rents, the elite factions have incentives to be peaceable most of the time. Adequate stability of the rents and thus of the social order requires limiting access and competition-hence a social order with a fundamentally different logic than the open access order. This paper lays out such a framework and explores some of its implications for the problems of development today.Corporate Law,Labor Policies,Public Sector Corruption&Anticorruption Measures,E-Business,Disability

Liquid Fertilizers?

Use of liquid fertilizers and fertilizer solutions has increased rapidly in Iowa since 1950, though such materials have been used in the United States since 1923. The earliest ones used in Iowa contained only nitrogen. Now, however, liquid fertilizers containing nitrogen, phosporous and potassium are being produced

Bringing Agriculture into the GATT: Designing Acceptable Agricultural Policies

Agricultural and Food Policy, International Relations/Trade,

The Gaseous Extent of Galaxies and the Origin of \lya Absorption Systems. III. Hubble Space Telescope Imaging of \lya-Absorbing Galaxies at z < 1

We present initial results of a program to obtain and analyze HST WFPC2 images of galaxies identified in an imaging and spectroscopic survey of faint galaxies in fields of HST spectroscopic target QSOs. We measure properties of 87 galaxies, of which 33 are associated with corresponding \lya absorption systems and 24 do not produce corresponding \lya absorption lines to within sensitive upper limits. Considering only galaxy and absorber pairs that are likely to be physically associated and excluding galaxy and absorber pairs within 3000 \kms of the background QSOs leaves 26 galaxy and absorber pairs and seven galaxies that do not produce corresponding \lya absorption lines to within sensitive upper limits. Redshifts of the galaxy and absorber pairs range from 0.0750 to 0.8912 with a median of 0.3718, and impact parameter separations of the galaxy and absorber pairs range from 12.4 to $157.4 h^{-1}$ kpc with a median of $62.4 h^{-1}$ kpc. The primary result of the analysis is that the amount of gas encountered along the line of sight depends on the galaxy impact parameter and B-band luminosity but does not depend strongly on the galaxy average surface brightness, disk-to-bulge ratio, or redshift. This result confirms and improves upon the anti-correlation between \lya absorption equivalent width and galaxy impact parameter found previously by Lanzetta et al. (1995). There is no evidence that galaxy interactions play an important role in distributing tenuous gas around galaxies in most cases. Galaxies might account for all \lya absorption systems with $W > 0.3$ \AA, but this depends on the unknown luminosity function and gaseous cross sections of low-luminosity galaxies as well as on the uncertainties of the observed number density of \lya absorption systems.Comment: Minor changes. Figure 1 stays intact and is available at ftp://ftp.ess.sunysb.edu/pub/lanzetta/wfpc