As examples of this phenomenon may be cited the greaten central nervous system stimulant activity of (+ )-amphetamine compared with that of its (—)-isomer(23), the superior antico agulant activity of S-(— )-phenpnocoumon compared with the R-(+)-isomer (10), the inactivity of (+)-methadone in the main tenance of opiate-dependent patients (21), and the superior analgesic activity of (+)-propo...

 Based on the recent literature of heterogeneous firms, productive firms self select themselves into foreign markets. In this framework, there is a productivity rise prior to exporting. On the other words, different export performance across firms is linked to their heterogeneity.   The main purpose of the present paper is to examine the so-called hypothesis of heterogeneous firm in Iran. For ...

Particles that are partially wetted by oil and water are known to adsorb at oil/water interfaces. By the same mechanism, particles that are partially wetted by two immiscible polymers should adsorb at the interface between those two polymers. However, since chemical differences between immiscible polymers are relatively modest, particle adsorption at polymer/polymer interfaces may be expected t...

SUMMARY The peak in vivo rates of catabolism to ‘‘@ CO2 of 4 C and of @ C were delayed from 30 to 90 mm in rats when excess thymine or excess 5-cyanouracil were injected together with the labeled compound. The delay was greater with 5-cyanouradil, which is a known inhibitor of rat liver pyrimidine reductase. When the peak output of 1 4 CO2 was thus delayed , the total recovery of @ @ C decr...

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The limited angular resolution of γ–ray telescopes prevents the straight identification of the majority of the sources detected so far. This is particularly true for the low latitude, probably galactic ones, only 10 % of which has been identified. Most of the counterparts are Isolated Neutron Stars, both radio–loud and radio–quiet, characterised by an extremely high value of fX /fopt. The best ...

We derive an efficient CH-type inequality. Quantum mechanics violates our proposed inequality independent of the detection-efficiency problem. In photonic Bell-type experiments [1], when photon pairs with parallel linear polarizations are emitted, one can consider a Clauser-Horne (CH) inequality [2], at the level of hidden variables, in the form − 1 ≤ Srq,HV (â, b̂, â, b̂, λ) ≤ 0 (1) where Srq,HV...

Only two types of rubber oxygenases, rubber oxygenase (RoxA) and latex clearing protein (Lcp), have been described so far. RoxA proteins (RoxAs) are c-type cytochromes of ≈70 kDa produced by Gram-negative rubber-degrading bacteria, and they cleave polyisoprene into 12-oxo-4,8-dimethyltrideca-4,8-diene-1-al (ODTD), a C15 oligo-isoprenoid, as the major end product. Lcps are common among Gram-posi...