A new elementary mechanism of radiation due to the oscillatory character of a radiation reaction force appearing when a relativistic charged particle moves along a periodic structure without external fields is investigated. It is shown that the nonsynchronous spatial harmonics of Cherenkov-type radiation (CR) can give rise to the oscillation of a particle which consequently generates undulator-...

We calculate the chiral and thermal susceptibilities for two confining DysonSchwinger equation models of QCD with two light flavours, a quantitative analysis of which yields the critical exponents, β and δ, that characterise the second-order chiral symmetry restoration transition. The method itself is of interest, minimising the influence of numerical noise in the calculation of the order param...

It seemed like a change for the best at the time. The change involved a progressive decrease, from the 1960s onwards, in the tar yield from cigarettes. The tar yield was readily measured using smoking machines. A firm basis existed for anticipating that a reduced yield of tar from cigarettes would result in a reduced incidence of lung cancer in people smoking them. So health authorities, includ...

Black liquor is a big energy source and a crucial component for the economy of the pulp and paper industry. Black liquor is conventionally burned in the Tomlinson recovery boiler. However, black liquor gasification combined cycle (BLGCC) has some advantages over the conventional technology, like superior energy efficiency, that makes this technology suitable to replace the traditional boiler. L...

We have demonstrated that polyamide nucleic acids complementary to the transactivation response (TAR) element of HIV-1 LTR inhibit HIV-1 production when transfected in HIV-1 infected cells. We have further shown that anti-TAR PNA (PNA(TAR)) conjugated with cell-penetrating peptide (CPP) is rapidly taken up by cells and exhibits strong antiviral and anti-HIV-1 virucidal activities. Here, we phar...

CONTEXT From 4%-6% of males subjected to radical cystectomy due to urothelial carcinoma will have urethral recurrence (UR) during the follow-up. OBJECTIVE To analyze the diagnosis, treatment and course of the patients with UR following a cystectomy. ACQUIRING OF EVIDENCE Analysis of original articles and reviews related with the diagnosis, treatment and course of patients subjected to radic...

In C. elegans, RNA processing of downstream operon genes through SL2 trans-splicing is crucial for polycistronic transcripts to be separated into monocistronic transcripts. The Ur element RNA sequence, which is important for proper SL2 trans-splicing, is found in the intercistronic region (ICR) of the pre-mRNA. The ICR is located between the 3’ end of one gene and the trans-splice site of a dow...

James R. Mahan Plant Stress and Water Conservation Laboratory, USDA-ARS, 3810 Fourth Street, Lubbock, TX 79415-3397 Pyrithiobac control of Palmer amaranth on the Texas Southern High Plains was correlated previously with temperature at the time of application. In the present study, the thermal dependence of pyrithiobac efficacy was used to define a thermal application range (TAR) for postemergen...

Transcriptional activation by the HIV-1 Tat protein requires specific residues in the hexanucleotide loop and trinucleotide bulge of the TAR RNA stem-loop structure found in the 5'-untranslated leader of all viral transcripts. Tat directly contacts residue U22 in the bulge and is thought to act in concert with cellular factors bound to the loop. We find that HeLa nuclear extracts contain two sp...