B A C K F I R E ? In late June, Hong Kong media reported China’s PLA-AF (People’s Liberation Army – Air Force) would seek to become a ‘strategic air force’ with the acquisition of the Russian Backfire cited as a core tenet of this fundamental policy change. To best appreciate the potential strategic impact of the Backfire upon the Asia Pacific region it is worth exploring the capabilities of th...

This note describes possible world semantics for a constructive modal logic CK. The system CK is weaker than other constructive modal logics K as it does not satisfy distribution of possibility over disjunctions, neither binary (3(A ∨ B) → 3A ∨ 3B) nor nullary (3⊥ → ⊥). Our intuition is that 3⊥ should not constructively imply ⊥, thus we dispense with both forms of distribution. We are intereste...

Certain types ofmacro-CK, type 1, have been reported to cause false increases in CK-MB by co-migration on electrophoresis (1-3). I report two such cases in which the macroCK was an IgA with anti-CK-BB specificity. According to methods proposed by Medeiros et al. (1), immunoprecipitation and subsequent analysis by elecrophoresis was used to separate interfering macre-CK from CK-MB. CK electropho...

Extended x-ray absorption fine structure ~EXAFS! measurements of Co78Cr22 , Co86Cr12Ta2 , and Co86Cr12Pt2 films were made to investigate the local structure and chemistry around Ta and Pt atoms to determine their site distributions in these alloys. Comparisons between the measured data and data collected from experimental standards and calculated using theoretical EXAFS simulation codes indicat...

Partindo da análise das manifestações de insatisfação usuários do Spotify no Twitter com o resultado Retrospectiva 2019, pretende-se investigar como a atuação dos algoritmos nas plataformas streaming música pode agenciar prática sonora ouvintes, tendo gosto musical um principais marcadores fruição ambiente digital. O artigo promove resgate conceito performance e busca repensá-lo partir dinâmica...

graphite oxide constitutes carbon network with oxygen atoms both on hexagonal arrangement and the edge sites. structural and electronic properties for graphite-oxygen complexes have been explored using first-principles total-energy calculations within the local density approximation (lda). band structures and density of states for the propose carbon 3d models are reported. a finite energy gap and...

Serum creatine kinase isoenzyme 2 concentrations (CK 2 mass) were measured in marathon runners during training and 1 and 2 days after a race and compared with values from 36 acute myocardial infarction (AMI) patients whose total CK and (or) CK 2 activities were similar to those of runners in the basal state. During training, runners had CK and CK 2 activities 53% and 43% above reference values,...

A conformation of a molecule is defined by the relative positions of atoms and by the chirality of asymmetric atoms in the molecule. The three main representations for conformations of molecules are Cartesian coordinates, a distance geometry descriptor (which consists of a distance matrix and the signs of the volumes of quadruples of atoms), and internal coordinates. In biochemistry, conformati...

The isoforms of CK-MB have recently received attention as potential biochemical markers for the early diagnosis of an acute myocardial infarction. A sensitive (analytical sensitivity = 0.2 ng/ml) immunochemical mass assay for the direct measurement of the CK-MB2 isoform has been developed by us. This assay utilizes a specific monoclonal capture antibody directed against the B-subunit of CK-MB a...

The enzyme creatine kinase (CK) [EC 2.7.3.2] is a dimeric molecule consisting of two separate subunits Band M, giving rise to three isoenzymes CK-BB, CK-MB and CK-MM. Most of the CK found in the plasma of normal individuals is the MM isoenzyme derived from skeletal muscle, while the CK-MB fraction originates predominately from cardiac muscle. Normally there is little, if any, CK-BB isoenzyme pr...