The Simultaneous Development of Airworthiness Academic Education and Vocational Training

AbstractAcademic education and vocational training are two primary ways for airworthiness professional personnel cultivation. The two ways have close relationship on function and form, and there are intersection and integration between then. In order to meet the sustained demand for airworthiness professional personnel, it is necessary to harmonize the relationship between academic education and vocational training, and make them develop simultaneously. This will be feasible through some measures, such as cooperation of multi-parties that concerned airworthiness, reasonable systematic management, and so on. Here some suggestions and considerations for the implementation and harmonize development on airworthiness education and training are proposed

Escherichia coli GutM4 produces 2,5-diketopiperazines and inhibits human pathogens in vitro

Background: It has been a very common practice to use probiotics or their metabolites as alternative antimicrobial strategies for the treatment and prevention of infections as rampant and indiscriminate use of antibiotics causes the development of antibiotic-resistant pathogens. The objective of this study was to select a potential antimicrobial probiotic strain of Escherichia coli from the human gastrointestinal tract and investigate the production of diketopiperazines that contribute to the antimicrobial activity. Results: E. coli GutM4was isolated from the feces of a healthy adult. E. coli GutM4 showed significant antagonistic activity against 10 indicator pathogens, and this activity was no less than that of the reference strain E. coli Nissle 1917 against eight of the indicator pathogens. Moreover, E. coli GutM4 produced antagonistic substances containing trypsin-targeted peptide bonds because the inhibitory effects of E. coli GutM4 supernatant significantly decreased upon treatment with trypsin. Consistent with the antagonistic activity and peptide compounds of E. coli GutM4, 14 2,5-diketopiperazines were isolated from the fermented broth of E. coli GutM4, including 12 cyclo(Pro-Phe), 3 cyclo(Pro-Tyr), and 5 cyclo(4-hydroxyl-Pro-Leu), which are reported to have antipathogenic activity. Conclusion: E. coli GutM4 produces 2,5-diketopiperazines that are partly involved in antagonistic action against human pathogens in vitro

Elimination of degenerate trajectory of single atom strongly coupled to the tilted cavity TEM10 mode

We demonstrate the trajectory measurement of the single neutral atoms deterministically using a high-finesse optical micro-cavity. Single atom strongly couples to the high-order transverse vacuum TEM_{10} mode, instead of the usual TEM_{00} mode, and the parameter of the system is (g_{10},\kappa ,\gamma )=2\pi \times (20.5,2.6,2.6)MHz. The atoms simply fall down freely from the magneto-optic trap into the cavity modes and the trajectories of the single atoms are linear. The transmission spectrums of atoms passing through the TEM10 mode are detected by a single photon counting modules and well fitted. Thanks to the tilted cavity transverse TEM10 mode, which is inclined to the vertical direction about 45 degrees and it helps us, for the first time, to eliminate the degenerate trajectory of the single atom falling through the cavity and get the unique atom trajectory. Atom position with high precision of 0.1{\mu}m in the off-axis direction (axis y) is obtained, and the spatial resolution of 5.6{\mu}m is achieved in time of 10{\mu}s along the vertical direction (axis x). The average velocity of the atoms is also measured from the atom transits, which determines the temperature of the atoms in magneto-optic trap, 186{\mu}K {\pm} 19{\mu}K.Comment: 13 pages, 5figure

Visual characterization of associative quasitrivial nondecreasing operations on finite chains

In this paper we provide visual characterization of associative quasitrivial nondecreasing operations on finite chains. We also provide a characterization of bisymmetric quasitrivial nondecreasing binary operations on finite chains. Finally, we estimate the number of functions belonging to the previous classes.Comment: 25 pages, 18 Figure

Quarterly Biology Report, 1956, Vol. 8 no. 4

Reporting on fishing to waterfowl of the state of Iowa is in this quarter biology report. Reports include census of fish in lakes, ponds, streams in Iowa. Also a count of upland birds, raccoons and waterfowl is included in this report

The complete chloroplast genome of a mangrove Kandelia obovata Sheue, Liu & Yong

Kandelia obovata is a widely distributed species of mangrove in Eastern Asia. In this study, the complete chloroplast genome sequence of K. obovata was assembled and characterised from high-throughput sequencing data. The chloroplast genome was 168,244 bp in length, consisting of large single-copy (LSC) and small single-copy (SSC) regions of 94,869 bp and 20,088 bp, respectively, which were separated by a pair of 26,618 bp inverted repeat (IR) regions. The genome is predicted to contain 129 genes, including 84 protein-coding genes, 37 tRNA genes, and 8 rRNA genes. The overall GC content of the genome is 34.6%. A phylogenetic tree reconstructed by 15 chloroplast genomes reveals that K. obovata is mostly related to Rhizophora stylosa