A5062403315- Advanced Chemical Physics Studies
- Atmospheric chemistry and aerosols
- Spectroscopy and Quantum Chemical Studies
- Advanced Combustion Engine Technologies
- Catalytic Processes in Materials Science
- Molecular Spectroscopy and Structure
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Quantum, superfluid, helium dynamics
- Atmospheric Ozone and Climate
- High-Energy Particle Collisions Research
- Particle physics theoretical and experimental studies
- Combustion and flame dynamics
- Photochemistry and Electron Transfer Studies
- Spectroscopy and Laser Applications
- Free Radicals and Antioxidants
- Industrial Gas Emission Control
- Hepatitis B Virus Studies
- Laser-Plasma Interactions and Diagnostics
- Inorganic Fluorides and Related Compounds
- Chemical Thermodynamics and Molecular Structure
- Biodiesel Production and Applications
- Air Quality Monitoring and Forecasting
- Liver Disease Diagnosis and Treatment
- Crystallography and molecular interactions
Shanghai Maritime University
2019-2025
Dalian Polytechnic University
2025
Beijing National Laboratory for Molecular Sciences
2007-2024
Yangzhou University
2024
Institute of Plant Protection
2024
Qingdao University of Science and Technology
2024
Nanjing University
2015-2024
Sun Yat-sen University
2023-2024
Peking University
2015-2024
State Key Laboratory of Pollution Control and Resource Reuse
2024
3-Ethylidene-6-vinyltetrahydro-2H-pyran-2-one (EVL), a substituent δ-lactone synthesized through telomerization of CO2 with 1,3-butadiene, is highly functionalized containing six-membered ring and two vinyl groups. It can hardly be polymerized directly common methods due to its poor polymerizability. In this paper, we report the controlled polymerization reactive trivinyl monomer derived from EVL, i.e. methyl-2-ethylidene-5-hydroxyhept-6-enoate methacrylate (MEDMA), which cleavage EVL...
Abstract Cracking of diethyl ether and reactions (DEE) with free radicals constitute crucial aspects research on oxygenated fuels. This paper investigates 17 involved in the combustion process DEE, calculating harmonic anharmonic reaction rate constants across a temperature range 300–4000 K. The Yao‐Lin method transition state theory are employed to determine these kinetic thermodynamic parameters system. Specifically, Wigner model is for correction tunneling. Furthermore, pressure‐dependent...
Secondary organic aerosols (SOAs) account for a large fraction of atmospheric fine particles, but the mechanisms their formation and evolution processes remain unclear. In this study, ground-based counterflow virtual impactor was used in combination with an online time-of-flight aerosol chemical speciation monitor to investigate multiphase (gaseous aqueous) oxidation SOA influencing factors during cloud events at mountain site southern China. Our results showed that clouds promoted...
The importance of anharmonic effect on dissociation molecular systems, especially clusters, has been noted. In this paper, we shall present a theoretical approach that can carry out the first principle calculations canonical and microcanonical rate constants unimolecular reactions within framework transition state theory. case, it is essential to calculate partition function oscillators; for convenience, Morse oscillator potential will be used demonstration in paper. microcanical which...
Asymmetric organocatalysis has made significant progress in recent decades as a powerful method to synthesize small chiral molecules. However, examples of organocatalytic polymerizations for the synthesis enantioenriched polymers are rare. Herein, we present metal-free asymmetric catalytic copolymerization meso-epoxides with CO2 using organoboron-based bifunctional and binary catalysts. Although enantioselectivities resultant copolymers significantly lower than those previously reported...
A vacuum ultraviolet (VUV) photoionization aerosol time-of-flight mass spectrometer (VUV-ATOFMS) has been developed for real-time, quantitative chemical analysis of organic particles in laboratory environments. nozzle ∼ 0.12 mm orifice combined with an aerodynamic lens assembly and a three stage differential pumping system is used to sample at atmospheric pressure. The are vaporized on thermal heater, then the nascent vapor photoionized by light generated RF-powered VUV lamp. 0.41 V/cm...
There has been over half a century since the discovery of hepatitis B virus (HBV) to now, but approximately 300 million patients with chronic (CHB) still live in world, resulting about one deaths every year. Although currently approved antivirals (e.g., nucleoside analogues) are effective at reducing HBV replication, they have almost no impact on existing covalently closed circular DNA (cccDNA) reservoir. cccDNA is critical obstacle complete elimination via antiviral therapy. The true cure...
Viruses are encapsidated mobile genetic elements that rely on host cells for replication. Several cytoplasmic RNA viruses synthesize proteins and/or RNAs translocate to infected cell nuclei. However, the underlying mechanisms and role(s) of cytoplasmic—nuclear trafficking unclear. We demonstrate infection small brown planthoppers with rice stripe virus (RSV), a negarnaviricot virus, results in K63-linked polyubiquitylation RSV’s nonstructural protein 3 (NS3) at residue K127 by RING ubiquitin...
Phenolic aldehydes as brown carbon (BrC) chromophores may contribute to the mass of aqueous secondary organic aerosol (aqSOA) due their potential atmospheric photosensitizers. However, there is still a lack knowledge about sensitizing ability and impact environmental factors. In this work, we studied photosensitized behavior phenolic aldehyde, syringaldehyde (SyrAld), in solutions. Under illumination, influences factors such precursor concentration, solution pH, codissolved inorganic...
Graphene-based spintronics has attracted great interest while the spin transport and relaxation in clean graphene at low temperatures are still unrevealed. Here, we present an all-dry van der Waals transfer technique to fabricate contamination-free single-layer based lateral valve devices. We have obtained a non-local resistance as large 125 Ω lifetime of up 2.47 ns room temperature simultaneously. Strikingly, unexpected dependence been observed, where τ diffusion length λ decrease with...
The cross sections of the title reactions were calculated as functions collision energy in range $0.2--2.4\phantom{\rule{0.3em}{0ex}}\mathrm{eV}$ on a potential surface Panda and Sathyamurthy [J. Chem. Phys. 121, 9343 (2004)]. results with Coriolis coupled method found to be more consistent experimental ones than centrifugal sudden approximation, thus suggesting that coupling plays an important role those reactions. A pronounced isotopic effect was also revealed attributed significant...
Abstract The combustion and emission characteristics of homogeneous charge compression ignition (HCCI) fuelled by methyl decanoate (MD) with different engine speeds dimethyl ether (DME) mixing ratios are investigated in this work. Engine data a MAN B&W 6S70MC low-speed two-stroke marine diesel were used for the reactor. results show that decrease speed has little effect on in-cylinder temperature pressure at constant excess air coefficient 1.5. Meanwhile, NO x emissions pure MD HCCI...
The dissociation rate constants for hydrogen fluoride dimers are calculated using the YL method, proposed by Yao and Lin (Yao, L.; Mebel, A. M.; Lu, H. F.; Neusser, J.; Lin, S. J. Phys. Chem. A 2007, 111, 6722). dividing surface method RRKM theory also used to obtain pseudo-transition states constants, respectively. For of HF dimers, anharmonic around 3.02 × 1010 3.46 1012 s−1, while harmonic in range 2.93 1.66 1013 at a temperature 243−1000 K, canonical case. microcanonical case, 1.91 1.32...
As research into periventricular leukomalacia (PVL) gradually increases, concerns are emerging about long‑term neuron injury. The present study aimed to investigate neuronal injury and the relevant alterations in apoptosis autophagy a PVL model established previously. A rat of hypoxia‑ischemia‑induced was established. In group, Sprague‑Dawley (SD) rats [postnatal day 3 (P3)] were subjected right common carotid artery ligation followed by suturing exposed 6‑8% oxygen for 2 h; control SD (P3)...
Ebolavirus vaccines based on several adenoviral vectors have been investigated in preclinical studies and clinical trials. The use of adenovirus serotype 2 as a vector for ebolavirus vaccine has not reported. Herein, we generated rAd2-ZGP, recombinant replication-incompetent expressing codon-optimized Zaire glycoprotein, evaluated its immunogenicity mice rhesus macaques. rAd2-ZGP induced significant antibody cell-mediated immune responses at weeks after single immunization. glycoprotein...
The purpose of this paper is to propose a theoretical approach, which can evaluate anharmonic effects on the rate constants within transition state theory. In treating unimolecular reactions under collision-free conditions by using RRKM theory, we make use inverse Laplace transformation partition functions obtain both total number states for activated complex and density reactant with Morse oscillator potential. To demonstrate applications our choose some model systems real reaction as examples.
The four-membered heterocyclic β-propiothiolactone compound was isolated in a low-temperature inert Ar matrix, and the UV−visible (200 ≤ λ 800 nm) induced photochemistry studied. On basis of IR spectra, formation methylketene (CH3CH═C═O) identified as main channel photodecomposition. ethene thiirane, with concomitant elimination OCS CO, respectively, also observed minor decomposition channels. valence electronic structure investigated by HeI photoelectron spectroscopy assisted quantum...
The five-membered heterocyclic γ-butyrothiolactone was isolated in a low-temperature, inert Ar matrix, and the UV−visible (200 ≤ λ 800 nm)-induced photochemistry studied. On basis of IR spectra, formation ethylketene (CH3CH2CH═C═O) identified as main channel photodecomposition. valence electronic structure investigated by He(I) photoelectron spectroscopy assisted quantum chemical calculations at outer Green's function/6-311++G(d,p) level theory. first three bands 9.54, 9.69, 11.89 eV are...
Electrocatalytic nitrate reduction reaction (NITRR) is highly desirable for remediating (NO3-) pollution and producing ammonia (NH3) under mild conditions. To date, great efforts have been made to fabricate selective, efficient, stable electrocatalysts NITRR. Among the numerous strategies, single-atom catalysts (SACs) received extensive interest investigations due their cost-effective maximum atomic utilization. However, further development of SACs-based NITRR remains hindered by a poor...