Imaging through opacity using a near-infrared low-spatial-coherence fiber light source: publisher's note.

This publisher's note contains corrections to Opt. Lett.45, 3816 (2020)OPLEDP0146-959210.1364/OL.397152.

Loop Enhanced Conformational Resampling Method for Protein Structure Prediction.

Protein structure prediction has been a long-standing problem for the past decades. In particular, the loop region structure remains an obstacle in forming an accurate protein tertiary structure because of its flexibility. In this study, Rama torsion angle and secondary structure feature-guided differential evolution named RSDE is proposed to predict three-dimensional structure with the exploitation on the loop region structure. In RSDE, the structure of the loop region is improved by the following: loop-based cross operator, which interchanges configuration of a randomly selected loop region between individuals, and loop-based mutate operator, which considers torsion angle feature into conformational sampling. A stochastic ranking selective strategy is designed to select conformations with low energy and near-native structure. Moreover, the conformational resampling method, which uses previously learned knowledge to guide subsequent sampling, is proposed to improve the sampling efficiency. Experiments on a total of 28 test proteins reveals that the proposed RSDE is effective and can obtain native-like models.

[Purification and activity calculated of fibrinolyric factors from Eupolyphaga sinensis].

Three kinds ( EFF-1, EFF-2 and EFF-3) of fibrinolytic factor were separated by ammonium sulphate precipitation, DEAE-cellulose and preparative PAGE electrophoresis from female Eupolyphaga sinensis Walker. Their molecular weights were proved to be 41kd, 32.9 kd and 30.6 kd respectively with SDS-PAGE electophoresis. Their Activities as plasminogen activator were 171.3 U/mg, 234.0 U/mg and 148.5 U/mg. In addition, EFF-2 and EFF-3 were not only fibrinolytic activities but also have plasminogen activator on fibrinous plate lacked of plasminogen . There had been no such components of plasminogen activator and fiberinolytic enzyme from Eupolyphaga sinensis reported yet.

[Morsicatio buccarum et labiorum: two cases report].

Morsicatio buccarum et labiorum is a form of chronic oral mucosa disease caused by habitual cheek or lip biting. The affected mucosa shows a shredded appearance. The patients may feel their oral mucosa rough. In present, there have not been unified denomination and systematic introduction about this disease in our country. Two cases were reported here. The pathogenesis, clinical manifestation, pathology, diagnosis, differential diagnosis, treatment and prognosis about this disease were also discussed.

[The oral exosyndrome and diagnosis of 3 patients with acquired immune deficiency syndrome].

The aim of the report is to increase the dentists', vigilance to the acquired immune deficiency syndrome (AIDS) by means of analyzing the oral exosyndrome and discussing the experience of diagnosis to 3 patients with AIDS. Vigilance to AIDS can make us to discover, diagnose and treat it in the early stage, and prevent us from transmission of the disease.

[Purification and biochemical character of a fibrinolytic protein from Eupolyphaga sinensis].

A novel of fibrinolytic protein has been separated and purified by ammonium sulfate fractionation, DEAE-cellulose and SephadexG-75 Column chromatography from the tissue of the female Eupolyphaga sinensis in the paper. The protein showed an apparent molecular weight of 41.3 kD on sodium dodecyl sulfate-polyacrylamide gel electrophoresis analysis. In addition, it includes 10.5% sugar. Its specific activity to hydrolyze fibrin was 547.86 u/mg. The enzyme activity was inhibited by Mg2+, Ca2+, protein inhibitors, such as 8mol/L urea and 1% beta-mercaptoethanol, and serine protease inhibitor such as phenylmethanesulfonyl fluoride (PMSF), but wasn't inhibited by Na+, K+ and ethylenediaminotetraacetic acid (EDTA). The protein was stable under 40 degrees C and it's optimal temperature was also 40 degrees C. It's optimal pH was 8.0. It showed a different way between the activity and UK when they degrade the plasminogen. Based on all the messages the protein can be suggested to be a novel fibrinolytic protein. There have been no such component of fiberinolytic enzyme from Eupolyphaga sinensis walker reported yet.