A5001464751- Geology and Paleoclimatology Research
- Catalytic C–H Functionalization Methods
- Geological formations and processes
- Pleistocene-Era Hominins and Archaeology
- Synthesis and Catalytic Reactions
- Aeolian processes and effects
- Gas Sensing Nanomaterials and Sensors
- Archaeology and ancient environmental studies
- Geomagnetism and Paleomagnetism Studies
- Catalytic Cross-Coupling Reactions
- Tree-ring climate responses
- Advanced Chemical Sensor Technologies
- Cryospheric studies and observations
- Isotope Analysis in Ecology
- Climate variability and models
- Analytical Chemistry and Sensors
- Climate change and permafrost
- Fluorine in Organic Chemistry
- Cyclopropane Reaction Mechanisms
- Methane Hydrates and Related Phenomena
- Plant Surface Properties and Treatments
- Sulfur-Based Synthesis Techniques
- Hydrocarbon exploration and reservoir analysis
- Greenhouse Technology and Climate Control
- Plant Water Relations and Carbon Dynamics
Institute of Earth Environment
2016-2025
Chinese Academy of Sciences
2016-2025
Hong Kong Baptist University
2025
Anhui University of Traditional Chinese Medicine
2025
Beijing Institute of Technology
2019-2024
Kunming Institute of Botany
2024
China Agricultural University
2017-2024
Nantong University
2024
Zhongnan Hospital of Wuhan University
2024
Wuhan University
2024
A direct method has been developed for iodine-mediated thiolation of naphthols/naphthylamines and arylsulfonyl hydrazides through the formation C-S bond cleavage S-N/S-O bonds. In this transformation, a range valuable thioethers are easily achieved in moderate to good yields.
An efficient method for the direct synthesis of substituted quinolines from anilines and aldehydes through C-H functionalization, C-C/C-N bond formation, C-C cleavage has been developed. The is simple practical employs air as an oxidant.
Although stratigraphic sequences of aeolian deposits in dryland areas have long been recognized as providing information about past environments, the exact nature environmental processes they reflect remains unclear. Here, we report results a detailed investigation eight outcrop sections Gonghe Basin, northeastern Qinghai-Tibetan Plateau. Measurements sediment grain-size and chemical composition indicate that are primarily origin, consisting interbedded, well-sorted sand, silty loess and/or...
Sihailongwan Maar Lake, located in Northeast China, is a candidate Global boundary Stratotype Section and Point (GSSP) for demarcation of the Anthropocene. The lake’s varved sediments are formed by alternating allogenic atmospheric inputs authigenic lake processes store record environmental human impacts at continental-global scale. Varve counting radiometric dating provided precise annual-resolution sediment chronology site. Time series records radioactive ( 239,240 Pu, 129 I soot 14 C),...
Abstract Aeolian deposits at four sites in the Gonghe Basin were used to reconstruct history of aeolian activity over late Quaternary. These include well-sorted sand, paleosols and/or loess. sand represents dune-field expansion dune buildup, whereas indicate stabilization dunes, accompanying ameliorated vegetation cover. On basis 25 dates by optically stimulated luminescence (OSL), it appears that activities occurred episodically 33.5, 20.3, 13.9, 11.8–11.0, 9.4, 7.8, and 5.7 (5.5) ka, which...
Abstract The aminoazanium of DABCO (H 2 N‐DABCO) has been developed as a general and practical amination reagent for the direct alkyl aryl pinacol boronates. This compound is stable use reagent. Various primary, secondary. tertiary alkyl−Bpin aryl−Bpin substrates were aminated to give corresponding amine derivatives. stereospecific. anti‐Markovnikov hydroamination olefins was easily achieved by catalytic hydroboration with HBpin in subsequent situ using H N‐DABCO. Moreover, combination...
Abstract. Rapid monsoon changes since the last deglaciation remain poorly constrained due to scarcity of geological archives. Here we present a high-resolution scanning X-ray fluorescence (XRF) analysis 13.5 m terrace succession on western Chinese Loess Plateau (CLP) infer rapid deglaciation. Our results indicate that Rb∕Sr and Zr∕Rb are sensitive indicators chemical weathering wind sorting, respectively, which further linked strength East Asian summer (EASM) winter (EAWM). During...
The lithium oxygen (Li–O2) battery is considered as one of the promising next-generation energy storage devices due to its high theoretic specific energy. However, some critical problems such solvent evaporation, dendrites, liquid electrolyte leakage, and decomposition under voltage seriously hinder application. To address these issues, a well-designed poly(methyl methacrylate) (PMMA) SiO2 composite gel polymer (PMMA/SiO2/PP@GPE) prepared by phase inversion method followed gelation process....
A direct method for the synthesis of substituted indolizines by means I2-mediated oxidative tandem cyclization via C-N/C-C bond formation was developed. Various aromatic/aliphatic enolizable aldehydes and 2-pyridylacetates/acetonitrile/acetone proceeded smoothly in this transformation, desired products were generated moderate to good yields.
A simple new way to tune the optical phase transition temperature of VO2 films was proposed by only controlling pressure oxygen during annealing process. Vanadium were deposited on glass a large-scale magnetron sputtering coating system and then annealed in appropriate atmosphere form films. The infrared transmission change (at 2400 nm) is as high 58% for thin film substrate, which very good tuning radiation energy saving smart windows. can be easily tuned from an intrinsic 44.7 °C 40.2...
Tomato bacterial wilt caused by Ralstonia solanacearum is one of the most destructive soil-borne diseases. Many strategies have been taken to improve soil suppressiveness against this disease, but limited success has achieved. In study, a novel bioorganic fertilizer revealed higher suppressive ability compared with several management methods in field over four growing seasons from March 2011 July 2013. The application significantly (P<0.05) reduced disease incidence tomato and increased...
An I2-promoted, metal-free domino protocol for one-pot synthesis of 1,3,4-oxadiazoles has been developed via oxidative cleavage C(sp2)–H or C(sp)–H bonds, followed by cyclization and deacylation. In this reaction, the use K2CO3 as a base is found to be an essential factor in C–C bond cleavage. This procedure proceeded smoothly moderate high yields with good functional group compatibility.
A sediment record reveals a 2-year delayed response following the 2008 Wenchuan earthquake, attributed to monsoon rainfall.