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Formation of knots in mathematical self-avoiding random walks has been extensively studied (10 – 16). In the 1960s, Frisch and Wasserman (10) and Delbruck (11) conjectured that the probability of ...

Journal Club posts are short news stories featuring a recent important, timely journal article selected by one of our Journal Club panelists, who are post-doctoral associates and graduate students in ...

Edited by Ashley Steed, Washington University in St. Louis School of Medicine, St. Louis, MO; received July 20, 2025; accepted January 28, 2026 by Editorial Board Member Michael S. Diamond ...

Proof of the Ergodic Theorem Two such sets S λ * belonging to different λ ’s are evidently distinct except for a set of measure 0. Hence there can exist only a numerable set S λ i * (i = 1, 2,) of ...

The last 500 million years of the strontium-isotope record are shown to correlate significantly with the concurrent record of isotopic fractionation between inorganic and organic carbon after the ...

Instability and collapse of the underwater slippery air mattress hinder its applications, after which the air mattress cannot be recovered even on superhydrophobic surfaces like lotus leaves. Beyond ...

Edited by John M. Wallace, University of Washington, Seattle, WA, and approved December 12, 2012 (received for review August 22, 2012) Summer monsoons and tropical storms (TSs) affect billions of ...

Old Italian violins are widely believed to have playing qualities unobtainable in new violins, including the ability to project their sound more effectively in a hall. Because Old Italian instruments ...

Kyeema and Doongara plants were grown at 29°C day/22°C night temperatures during the summer season in a phytotron glasshouse. Stem material was harvested when the top internode of the stem had reached ...

Chloride concentrations are increasing at a rate that threatens the availability of fresh water in the northeastern United States. Increases in roadways and deicer use are now salinizing fresh waters, ...

Animals with widely varying body weight, such as flies, spiders, and geckos, can adhere to and move along vertical walls and even ceilings. This ability is caused by very efficient attachment ...