‎second derivative general linear methods (sglms) as an extension‎ ‎of general linear methods (glms) have been introduced to improve‎ ‎the stability and accuracy properties of glms‎. ‎the coefficients of‎ ‎sglms are given by six matrices‎, ‎instead of four matrices for‎ ‎glms‎, ‎which are obtained by solving nonlinear systems of order and‎ ‎usually runge--kutta stability conditions‎. ‎in this p...

Summnzarv. A regtulatory system has been described in the obligately phototrophic green alga Chl/amnvdomonlas nitnudana. Cells grown in acetate me(lia are uniable to fix carbon dioxide in the light but carry out a photoassimilation of acetate to carbohydrate: cells cultured with carbon dioxide as the sole source of cellular carbon carry out typical green plant photosynthesis. The control appear...

The multistrategy knowledge discovery tool, INLEN, is applied to databases consisting of economic and demographic facts and statistics about the countries of the world. Preliminary experiments focus on discerning andl comparing various.patterns in the status and development of countries in different regions Of the world. These experiments have provided some interesting and often unexpected resu...

W. McC., age 17 years. This patient attended E.N.T. Extern and was admitted to the Royal Victoria Hospital on the 16th September, 1949. He complained of nasal obstruction for one year which was noticed first on the right side and later on the left. Four months before admission he had a severe epistaxis, during which he lost a considerable amount of blood. He was treated six months previously fo...

rhe INFECTIVE group consists of 674. cases, or 53.8 per cent. of the total admissions, and of this group the rheumatic had 4153 cases, one-third of the total, or 67.2 per cent. of the Infective group. In this group are placed those cases with a definite history of rheumatic fever, chorea, growing pains, tonsillitis, scarlet fever, andl erythema nodosum. Ten per cent. of the patients with a defi...

Apyrases, enzymes which hydrolyze ATP (adenosine triphosphate to form AMP (adenylic acid) and orthophosphate, have been described in potato (11) and citrus fruits (1). A phosphatase which will specifically dephosphorylate AMP has been found in potato (18); however, non-specific phosphatases will also dephosphorylate this compound (2). Enzymes specifically dephosphorylating yeast adenylic acid (...

We performed Ussing chamber experiments on cultured human bronchial epithelial cells to look for the presence of electrogenic dibasic amino acid transport. Apical but not basolaterall-arginine (10-1,000 μM) increased the short-circuit current. Maximal effect and EC50 were ∼3.5 μA/cm2 and 80 μM, respectively, in cells from normal subjects and cystic fibrosis patients. The involvement of nitric o...

Apparent molar compressibilities (φk) and apparent molar volume (φv) of L-valine, L-leucine andL-phenylalanine in aqueous solution of KNO3 at different concentrations have been determined at the temperature 303.15K using a standard ultrasonic frequency of 2 MHz. The above parameters can be evaluated from precise density, ultrasonic velocity and time flow measurements using a specific gravity bo...

Beckwitli and hiis associates(l) described the following features of a condition subsequently called the exomplialos-macroglossia-gigantism (E IG) syndrome: macroglossia; omphalocoele; visceromegaly; somatic gigantism and neonatal hlypoglycemia. Combs et al.(2) studied two clhildren with this syndrome and demonstrated that lhyperinsulinism and polycytlhemia during infancy were also part of the ...