A study of the intensity of the self-broadened fundamental band of hydrogen chloride

Intensity study of self-broadened fundamental band of hydrogen chlorid

Chemical and Toxicological Analyses of Lake Calumet (Cook County, Illinois) Sediments

HWRIC Project 88-048NTIS PB90-16072

Characterisation of the dynamical quantum state of a zero temperature Bose-Einstein condensate

We describe the quantum state of a Bose-Einstein condensate at zero temperature. By evaluating the Q-function we show that the ground state of Bose-Einstein condensate under the Hartree approximation is squeezed. We find that multimode Schroedinger cat states are generated as the condensate evolves in a ballistic expansion.Comment: 13 pages, 6 figure

Farming With Flax

As Iowa\u27s praire sod was broken, sometimes the first crop on the land was flax. Since those early days Iowa has grown some flax every year. Through the war years, oil was needed and the flax average increased. We still need more flax in order to get its products-linseed oil and linseed meal

Barley in Iowa

Barley yields in Iowa are higher than those for oats, but in spite of this 15 times more acres are sown to oats than to barley. During the 10 year period, 1925-34, the farms of Iowa produced average acre yields of 1,007 pounds of oats on 6,000,000 acres and 1,238 pounds of barley on 460,000 acres. Figure 1, presenting data from the Iowa Year Book of Agriculture, shows the relative acreage and acre yields of the two crops from 1900 to 1934. In order that a direct comparison may readily be made, the yields of barley have been converted into units of 32 pounds, corresponding to a standard bushel of oats. These data indicate that while the spread between the yields of the two crops was somewhat greater during the 10 year period, 1920-29, than during the preceding decade, the same general relation, in both yield and acreage, has existed for more than 30 years

If You Plan to Grow Flax

Last year Iowa farmers grew 40,000 acres of flax, the most in many years. They will probably grow a still larger acreage in 1940 because of the yield and price of the 1939 crop, and as in 1939, they may grow and harvest flax under the 1940 AAA program without having it count as a soil-depleting crop providing it is used as a nurse crop for clover, alfalfa or grass seeding

Flax as an Iowa crop

Among the grain crops in the United States, seed flax is exceeded in value by corn, wheat, oats and barley. It has approximately the same value as rye, rice and sorghums. As a crop for new land, the flax seed acreage reached a peak (3,700,000 acres) in 1902, but gradually declined to little more than a million acres by 1922. As a crop for old land, taking its place in rotations, flax acreage reached a second peak equal to the first in 1930. Consumption of flax in the United States surpassed production in 1909 and for the past two and a half decades it has been necessary to buy a quantity from other countries about equal to that produced here. In Iowa the maximum acreage, somewhat over 322,000, was reported for 1885. As the new land disappeared the Iowa flax acreage gradually dwindled to less than 6,000 acres in 1922

Stochastic Gene Expression in a Lentiviral Positive Feedback Loop: HIV-1 Tat Fluctuations Drive Phenotypic Diversity

Stochastic gene expression has been implicated in a variety of cellular processes, including cell differentiation and disease. In this issue of Cell, Weinberger et al. (2005) take an integrated computational-experimental approach to study the Tat transactivation feedback loop in HIV-1 and show that fluctuations in a key regulator, Tat, can result in a phenotypic bifurcation. This phenomenon is observed in an isogenic population where individual cells display two distinct expression states corresponding to latent and productive infection by HIV-1. These findings demonstrate the importance of stochastic gene expression in molecular "decision-making."Comment: Supplemental data available as q-bio.MN/060800