Th e distributions of body masses and degrees (i.e. the number of trophic links) across species are key determinants of food-web structure and dynamics. In particular, allometric degree distributions combining both aspects in the relationship between degrees and body masses are of critical importance for the stability of these complex ecological networks. Th ey describe decreases in vulnerabili...

We simulate collisions involving red-giant stars in the centre of our galaxy. Such encounters may explain the observed paucity of highly luminous red giants within ∼ 0.2 pc of Sgr A⋆. The masses of the missing stars are likely to be in the range ∼ 2M⊙ − 8M⊙. Recent models of the galactic centre cluster’s density distribution and velocity dispersion are used to calculate two-body collision rates...

1. Multiple infection of red corpuscles with young parasites is seen in all malarial infections, but it is found most frequently in the aestivo-autumnal infections. The occurrence is accidental and has no significance other than that if the instances are numerous it suggests a heavy infection. 2. In instances of multiple infection the young parasites may be seen to be attached: (a) each encircl...

The DEEP2 and COMBO-17 surveys are used to study the evolution of the luminosity function of red and blue galaxies to z ∼ 1. Schechter function fits show that, since z = 1, M∗ B dims by ∼ 1.3 mag per unit redshift for both color classes, φ∗ of blue galaxies shows little change, while φ∗ for red galaxies has formally nearly quadrupled. At face value, the number density of blue galaxies has remai...

Cansjera rheedii is widely used as a traditional medicine for the treatment and control of a variety of human inflammatory ailments by the fishermen of Auroville.   In the present study, the anti-inflammatory and membrane stabilizing property of Ethanol Extract of Cansjera rheedii J. Gmelin (EECR) was evaluated in rat using the Human Red Blood Cells (HRBC) membrane stabilization method...

nowadays brain tumors remain as a significant cause of morbidity and mortality and are often treatment refractory. the grading of brain tumor has an important implication in clinical management. currently, magnetic resonance spectroscopy (mrs) is an important modality in evaluating and grading brain tumors. the aim of this study is  evaluation of metabolites in the differentiation of brain tumo...

abdominal mass is one of the commonest clinical findings in children. the purpose of this study was to evaluate abdominal masses in different age groups in a referral children surgical center. we retrospectively reviewed records of 325 patients (57% boys, mean age 37.7 months) admitted to amir kabir hospital in period of 12 years for abdominal mass surgery. the 4 most common abdominal masses wa...

background imaging plays a critical role not only in the detection, but also in the characterization of lung masses as benign or malignant. objectives to determine the diagnostic accuracy of dynamic magnetic resonance imaging (mri) in the differential diagnosis of benign and malignant lung masses. patients and methods ninety-four masses were included in this prospective study. five dynamic seri...

By RICHARD I. WALKER, J. C. HERIOX AND S. \V. SMITH, Jn. A N UNEXPECTED INCREASE in resistance to osmotic lysis of red cells passed through cotton has been observed many times in this laboratory during procedures for obtaining samples of pure lymphocytes for chemical analysis1 and in vitro culture.2 This increased resistance has been manifest by incomplete lysis on exposure to hypotonic solutio...