*Correspondence: Robinson W. Fulweiler, Department of Earth and Environment, Boston University, 685 Commonwealth Avenue Rm. 130, Boston, MA 02215, USA e-mail: [email protected] Human activities have dramatically altered reactive nitrogen (N) availability in coastal ecosystems globally. Here we used a gradient of N loading found in a shallow temperate estuary (Waquoit Bay, Massachusetts, USA) to examin...

desmoplastic small round cell tumor is a rare malignant tumor that occurs primarily in young males. here, a case of small round cell tumor in an adult male successfully treated with a curative concurrent chemoradiotherapy is presented. a 58-year-old man had an intrapelvic tumor. surgical resection was attempted, but the tumor was unresectable. needle biopsy was performed and the diagnosis was s...

BACKGROUND Concurrent sexual partnerships (partnerships that overlap in time) may contribute to higher rates of HIV transmission in African Americans. Attitudes toward a behavior constitute an important component of most models of health-related behavior and behavioral change. We have developed a scale, employing realistic vignettes that appear to reliably measure attitudes about concurrency in...

OBJECTIVE We previously showed that cholesterol loading in vitro converts mouse aortic vascular smooth muscle cells (VSMC) from a contractile state to one resembling macrophages. In human and mouse atherosclerotic plaques, it has become appreciated that ≈40% of cells classified as macrophages by histological markers may be of VSMC origin. Therefore, we sought to gain insight into the molecular ...

BACKGROUND The biomechanical mechanisms of failure of FSUs have been studied but the correlation of repetitive flexion and extension loadings to the initial phase of fatigue in young FSUs are still not known. The purpose of the study was to examine the fatigue results of low magnitude repetitive flexion and extension loading on porcine lumbar Functional Spinal Units (FSUs) with Magnetic Resonan...

To study the ionic basis of salt sensitivity in hypertension, Tl_-, 31p-, and 'Na-nuclear magnetic resonance techniques were used to measure cytosolic free calcium (Ca1), pH (pH,), free magnesium (Mg1), and sodium (Na4) in erythrocytes of essential hypertensive subjects (n = 19). Individuals were studied for 2 mo each on low(UNaV < 50 meq/d) and high(UNaV > 200 meq/d) salt diets, with the conco...

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Acoustic emissions (AEs) and weak electrical signals, also known as pressure stimulated currents (PSCs), were concurrently recorded in order to investigate their behavior detect precursory indicators when cement mortar specimens subjected mechanical compressive loading, emphasizing the of AEs PSC signal vicinity fracture. The axial loading protocol incorporated a constantly increasing stress, f...