The plastid genome of the colorless, nonphotosynthetic protist Astasia longa resembles that of the photoautotrophic species Euglena g r a d i s but is only half the size (73 kb instead of 143 kb). A large number of intact ribosomal protein genes, rRNA genes, and tRNA genes have been identified in the 50% of Astasia ptDNA that has been sequenced (Siemeister and Hachtel, 1989; Siemeister et al., ...

The interference of the heparin-neutralizing plasma component S protein (vitronectin) (Mr = 78,000) with heparin-catalyzed inhibition of coagulation factor Xa by antithrombin I11 was investigated in plasma and in a purified system. In plasma, S protein effectively counteracted the anticoagulant activity of heparin, since factor Xa inhibition was markedly reduced in comparison to heparinized pla...

From chickpea (Cicer arietinum L.), one ,f3-1,3-glucanase and two chitinases were purified and characterized (Vogelsang and Barz, 1993). The P-l,S-glucanase and one chitinase each with a basic isoelectric point (class I) were shown to be localized in vacuoles, whereas the second class 111 acidic chitinase revealed an extracellular localization (Mackenbrock et al., 1992). Here we report on the c...

Enzymatic heme oxygenase activity has been partially purified from extracts of the unicellular red alga Cyanidium caldarium, and the macromolecular components have been separated into three protein fractions, referred to as Fractions I, 11, and 111, by serial column chromatography through DEAE-cellulose and Reactive Blue 2-Sepharose. Fraction I is retained by DEAE-cellulose at low salt concentr...

Quasi-one-dimensional Ta0.96Fe0.0SS3 has been studied in magnetic fields applied at T = 4.2 K by Miissbauer spectrcxcopy. The amplitudes of the CDW's are increased. Also a phase transition is induced; SDW's then coexist with CDW's. When an external magnetic field is applied to charge-density-wave (CDW) conductors at low temperature new phenomena are sometimes observed. For example, Parilla et a...

Using a difference-in-differences framework, we estimate the impact of Ramadan on educational outcomes of Muslim students living in a non-Muslim country. For identification we exploit the fact that the number of Ramadan weeks during the course that we study, varies from year to year, ranging from zero to four. Our main finding is that Ramadan observance has a negative impact on performance; one...

1. Nuclei were isolated from rat liver and spleen by a standard technique which preserved the nuclear membrane. Electron microscopy, DNA/protein ratios and S'-nucleotidase determinations codfirmed the purity of the preparation. 2. Both liver and spleen nuclei specifically bound '251-labelled angiotensin I1 (ANG 11) with high affinity (Kd Z 1-0 nmol/l). Saralasin ANG I11 and ANG I1 competed with...

In many health care systems primary care physicians act as ‘gatekeepers’ to secondary care. We investigates the impact of the UK fundholding scheme under which general practices could elect to hold a budget to meet the costs of elective surgery for their patients. We use a differences in differences methodology on a large four year panel of English general practices before and after the aboliti...

We study the exit of hospitals from the market for inpatient services. More generous hospital reimbursement significantly reduces the probability of exit throughout the 1990s. Conditional on reimbursement levels, hospital efficiency was not a significant determinant in the early 1990s but in the midto late 1990s, less efficient hospitals were significantly more likely to exit. Throughout the pe...

Modern Problems. Edited by J. A. Hadfield, M.A., M.B., Ch.B. University of London Press. 5/-. In this volume is published a series of lectures held at the Institute of Medical Psychology i11 London. Dr. J. A. Hadfield contributes an Introduction, and the subjects dealt with are^ " National Character and National Sentiment, by Professor Morris Ginsberg; " Psychology and Racial Differences," by P...