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Observation of Optical Chaotic Solitons and Modulated Subharmonic Route to Chaos in Mode-Locked Laser.
Phys Rev Lett
December 2024
East China Normal University, State Key Laboratory of Precision Spectroscopy, and Hainan Institute, Shanghai, China.
We reveal a new scenario for the transition of solitons to chaos in a mode-locked fiber laser: the modulated subharmonic route. Its universality is confirmed in two different laser configurations, namely, a figure-of-eight and a ring laser. Numerical simulations of the laser models agree well with the experiments.
View Article and Find Full Text PDFPrecise Measurement of the e^{+}e^{-}→D_{s}^{+}D_{s}^{-} Cross Section at Center-of-Mass Energies from Threshold to 4.95 GeV.
Phys Rev Lett
December 2024
State Key Laboratory of Particle Detection and Electronics, Beijing 100049, Hefei 230026, People's Republic of China.
Using the e^{+}e^{-} collision data collected with the BESIII detector operating at the BEPCII collider, at center-of-mass energies from the threshold to 4.95 GeV, we present precise measurements of the cross section for the process e^{+}e^{-}→D_{s}^{+}D_{s}^{-} using a single-tag method. The resulting cross section line shape exhibits several new structures, thereby offering an input for a future coupled-channel analysis and model tests, which are critical to understand vector charmonium-like states with masses between 4 and 5 GeV.
View Article and Find Full Text PDFDirect analysis and identification of the intestinal microflora of shrimps for their geographical traceability mass spectrometry and bacterial library searching.
Analyst
January 2025
College of Food Science and Technology, Shanghai Ocean University (SHOU), 999 Hucheng Ring Road, Pudong New District, 201306 Shanghai, China.
The expansion of the seafood market has led to an increased probability of food fraud. The development of rapid and reliable traceability methods for aquatic food products is of utmost importance. In this study, direct analysis and identification of the intestinal microbiota of aquatic foods were conducted.
View Article and Find Full Text PDFA study on the production of extracellular vesicles derived from novel immortalized human placental mesenchymal stromal cells.
Sci Rep
January 2025
International Research Center for Biological Sciences, Ministry of Science and Technology, Shanghai Ocean University, No. 999 Hucheng Ring Road, Shanghai, 201306, China.
Extracellular vesicles (EVs) are not only involved in cell-to-cell communications but have other functions as "garbage bags", as bringing nutrients to cells, and as inducing mineral during bone formation and ectopic calcification. These minuscule entities significantly contribute to the regulation of bodily functions. However, the clinical application of EVs faces challenges due to limited production yield and targeting efficiency.
View Article and Find Full Text PDFDesign and synthesis of fluorinated polyimides with low thermal expansion and enhanced dielectric properties.
J Colloid Interface Sci
January 2025
School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, PR China. Electronic address:
Modern microelectronics industries urgently require dielectric materials with low thermal expansion coefficients, low dielectric constants, and minimal dielectric loss. However, the design principles of materials with low dielectric constants and low thermal expansion are contradictory. In this study, a new diamine monomer containing a dibenzocyclooctadiene unit (DBCOD-NH) was designed and synthesized, which was subsequently polymerized with high fluorine content 4,4'-hexafluoroisopr-opylidene diphthalic anhydride and 4,4'-diamino-2,2'-bis(trifleoromethyl)biphenyl to obtain a series of fluorinated polyimides (PIs).
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