An exceptional case of long-standing central pain temporarily relieved by a focal stroke in the primary somatosensory area is reported. This case highlights the focal nature of central pain mechanisms and the possible value of selective subparietal leukotomies in the management of central pain.

The disappearance of integer quantum Hall effect (IQHE) at strong disorder and weak magnetic field is studied in a lattice model. A generic sequence by which the IQHE plateaus disappear is revealed: higher IQHE plateaus always vanish earlier than lower ones, and extended levels between those plateaus do not float up in energy but keep merging together after the destruction of plateaus. All of t...

[1] During the period 1999–2002 there have been three instances, in May 1999, March 2002, and May 2002, respectively, when the solar wind densities at 1 AU dropped to abnormally low values (<0.1 cm ) for extended periods of time (12–24 h). These longlasting low-density anomalies observed at 1 AU are referred to as ‘‘solar wind disappearance events’’ and in this paper, we locate the solar source...

Soft, elastic materials are capable of large and reversible deformation, readily leading to various modes of instability that are often undesirable, but sometimes useful. For example, when a soft elastic material is compressed, its initially flat surface will suddenly form creases. While creases are commonly observed, and have been exploited to control chemical patterning, enzymatic activity, a...

The combination of low sernmii content and low specific activity tracer material has presented a difficult technical barrier to the study of the plasma disappearance of tracer amounts of vitamin BI,2 Three groups (1-3) have studied the rate of plasma disappearance of intravenous (loses ranging fromi 0.5 to 4.0 jg. These (loses were not and could not be considere(l to be of tracer mlagnitu(le si...

The rates of formation and disappearance of 7,12-dimethylbenz(a)anthracene (DMBA):DNA adducts were analyzed in the epidermis of SENCAR mice over a 21-day time course. Mice were treated topically with 10 nmol of tritium-labeled DMBA per mouse at various times prior to sacrifice. Under these experimental conditions, total covalent binding of DMBA to epidermal DNA reached a peak at 24 h, and there...

Accelerated fibrinogen disappearance in diabetic patients is reversible with normalization of blood glucose. To define the time course of this reversal, we measured 1 1-fibrinogen disappearance in 1 9 diabetic patients experiencing acute changes in blood glucose, as monitored and controlled by a microprocessor-controlled closed loop insulin infusion system (artificial beta cell). The data were ...

Watershed contamination from antibiotics is becoming a critical issue because of increased numbers of confined animal-feeding operations and the use of antibiotics in animal production. To understand the fate of tylosin in manure before it is land-applied, degradation in manure lagoon slurries at 22 degrees C was studied. Tylosin disappearance followed a biphasic pattern, where rapid initial lo...