The metabolism and cytotoxicity of benzyl 1,2,3,4,4-pentachlorobuta-1,3-dienyl sulfide (1) and benzyl 2-chloro-1,1,2-trifluoroethyl sulfide (2) were studied as an alternative test of the hypothesis that the toxicity of the cysteine S-conjugates S-(pentachlorobutadienyl)-L-cysteine and S-(2-chloro-1,1,2-trifluoroethyl)-L-cysteine is associated with their metabolism to unstable thiols; the expect...

UNLABELLED Early detection of postural disorders is essential for timely interventions in patients with imbalance. AIM A pilot study describing a new tool for evaluating static postural balance. STUDY DESIGN A cross-sectional study of a contemporary series. MATERIAL AND METHOD Twenty-five volunteers (15 women and 10 men) were evaluated. The mean age was 25.8 ± 4.2 years, the mean weight w...

Rotators interacting with a pendulum via small, velocity independent, potentials are considered: the invariant tori with diophantine rotation numbers are unstable and have stable and unstable manifolds (\whiskers"), whose intersections deene a set of homoclinic points. The homoclinic splitting can be introduced as a measure of the splitting of the stable and unstable manifolds near to any homoc...

Material accreted onto a neutron star can stably burn in steady state only when the accretion rate is high (typically super-Eddington) or if a large flux from the neutron star crust permeates the outer atmosphere. For such situations we have analyzed the stability of nonradial oscillations, finding one unstable mode for pure helium accretion. This is a shallow surface wave which resides in the ...

c-reactive protein (crp) response was studied in 44 patients with acute angina pectoris admitted to the coronary care unit. 71 % of patients with acute myocardial infarction (mi)had positive crp test while 73% of patients presumed to have unstable angina pectoris had negative crp test. this test can be helpful in differentiating between acute mi and unstable angina pectoris.

LLE Review, Volume 65 17 In inertial-confinement fusion (ICF), the ablation front of the imploding capsules is hydrodynamically unstable.1,2 The heavy material of the compressed pellet is accelerated by the low-density ablating plasma, thus making the pellet interface unstable to density perturbations (Rayleigh-Taylor instability).3 The classical treatment3 of this instability occurring at the ...

The r-modes of neutron stars can be driven unstable by gravitational radiation. While linear perturbation theory predicts the existence of this instability, linear theory can’t provide any information about the nonlinear development of the instability. The subject of this paper is the weakly nonlinear regime of fluid dynamics. In the weakly nonlinear regime, the nonlinear fluid equations are ap...

We describe the first example of unstable gene amplification consisting of linear extrachromosomal DNAs in drug-resistant eukaryotic cells. alpha-Difluoromethylornithine (DFMO)-resistant Leishmania donovani with an amplified ornithine decarboxylase (ODC) gene copy number contained two new extrachromosomal DNAs, both present in 10 to 20 copies. One of these was a 140-kb linear DNA (ODC140-L) on ...