Bond orientational order, molecular motion, and free energy of high-density DNA mesophases.

By equilibrating condensed DNA arrays against reservoirs of known osmotic stress and examining them with several structural probes, it has been possible to achieve a detailed thermodynamic and structural characterization of the change between two distinct regions on the liquid-crystalline phase diagram: (i) a higher density hexagonally packed region with long-range bond orientational order in the plane perpendicular to the average molecular direction and (ii) a lower density cholesteric region with fluid-like positional order. X-ray scattering on highly ordered DNA arrays at high density and with the helical axis oriented parallel to the incoming beam showed a sixfold azimuthal modulation of the first-order diffraction peak that reflects the macroscopic bond-orientational order. Transition to the less-dense cholesteric phase through osmotically controlled swelling shows the loss of this bond orientational order, which had been expected from the change in optical birefringence patterns and which is consistent with a rapid onset of molecular positional disorder. This change in order was previously inferred from intermolecular force measurements and is now confirmed by 31P NMR. Controlled reversible swelling and compaction under osmotic stress, spanning a range of densities between approximately 120 mg/ml to approximately 600 mg/ml, allow measurement of the free-energy changes throughout each phase and at the phase transition, essential information for theories of liquid-crystalline states.

The energy of Beverly Rosen artist, professor, risk taker

"This paper takes a look at Beverly Rosen’s artistic work, providing an overview of the various periods and styles she explored, while introducing new details and expanding established interpretations of her work. It is an attempt at documenting Rosen’s many activities in addition to her personal art and professional development. Special attention is given to exhibitions and programming held at Rosen’s gallery, St. Charles on Wazee"

Equilibria involving cyanogen iodide and the free energy of cyanogen ...

Thesis t.-p. attached to the cover of the reprint from the Journal of the American chemical society, vol. XL, no. 3, March 1918, by Gilbert N. Lewis and Donald B. Keyes.

Management of the Tongass National Forest [microform] : hearings before the Subcommittee on Forests, Family Farms, and Energy of the Committee on Agriculture, House of Representatives, One Hundredth Congress, second session, on H.R. 1516, May 25 and 26, 1988.

"Serial no. 100-86."

Timber sales on national forests [microform] : hearings before the Subcommittee on Forests, Family Farms, and Energy of the Committee on Agriculture, House of Representatives, One Hundredth Congress, first session, June 17 and 18, 1987.

"Serial no. 100-47."

Exchange certain national forest system lands in the Targhee National Forest [microform] : hearing before the Subcommittee on Forests, Family Farms, and Energy of the Committee on Agriculture, House of Representatives, One Hundredth Congress, second session, on H.R. 4028, April 16, 1988; Driggs, ID and April 27, 1988.

"Serial no. 100-88."

Middle Atlantic Interstate Forest Fire Protection Compact to include the state of Ohio; land conveyance in Henderson, TN; and release a revisionary interest of the United States in certain land located in Oktibbeha County, MS [microform] : hearings before the Subcommittee on Forests, Family Farms, and Energy of the Committee on Agriculture, House of Representatives, One Hundredth Congress, second session, on H.R. 2756, H.R. 2835, and H.R. 4724, May 4, 1988 ... September 22, 1988 ....

"Serial no. 100-89."

Review of the drug law enforcement activities of the Forest Service; and the Omnibus Public Lands Act of 1987 [microform] : hearing before the Subcommittee on Forests, Family Farms, and Energy of the Committee on Agriculture, House of Representatives, One Hundredth Congress, second session, on H.R. 3680, July 12, 1988.

"Serial no. 100-92."

Review of reoffered timber sale appeals and fire salvage efforts in Oregon [microform] : hearing before the Subcommittee on Forests, Family Farms, and Energy of the Committee on Agriculture, House of Representatives, One Hundredth Congress, second session, April 13, 1988.

"Serial no. 100-87."

Review the effects of the 1987 forest fires and the recovery efforts in the national forests in California [microform] : hearing before the Subcommittee on Forests, Family Farms, and Energy of the Committee on Agriculture, House of Representatives, One Hundredth Congress, second session, May 20, 1988, Redding, CA.

"Serial no. 100-90."

A practical treatise on caoutchouc and gutta percha, comprising the properties of the raw materials and the manner of mixing and working them; with the fabrication of vulcanized and hard rubbers, caoutchouc and gutta percha compositions, waterproof substances, elastic tissues, the utilization of waste, etc.

Mode of access: Internet.

Federal timber sales contracts extensions and terminations [microform] : hearings before the Subcommittee on Forests, Family Farms, and Energy of the Committee on Agriculture, House of Representatives, Ninety-seventh Congress, first session, on H.R. 4932 and H.R. 5012, October 15, 1981 and November 23, 1981, Washington, D.C., December 3, 1981, Roseburg, Oreg.

"Serial no. 97-QQ."

National Forest Management Act regulations [microform] : hearing before the Subcommittee on Forests, Family Farms, and Energy of the Committee on Agriculture, House of Representatives, Ninety-seventh Congress, second session, March 10, 1982.

"Serial no. 97-AAA."

Vegetation Management Reform Act of 1981 [microform] : hearing before the Subcommittee on Forests, Family Farms, and Energy of the Committee on Agriculture, House of Representatives, Ninety-seventh Congress, first session, on H.R. 2900, April 16, 1981, Eugene, Oreg.

"Serial no. 97-I."

Loan guarantees for alcohol fuels and biomass programs [microform] : hearing before the Subcommittee on Forests, Family Farms, and Energy of the Committee on Agriculture, House of Representatives, Ninety-seventh Congress, first session, March 16, 1981.

"Serial no. 97-C."