26 Result(s)

Article

A study of the balanced area of index’s fluctuation in shanghai stock exchange

Chinese stock market is a develo** one. In the present stages, to control scientifically the expansion speed and avoid drastic fluctuations is an important problem. Through analysis of plenty of data of SSE ...

Zhan-yun Chen, Xue-feng Li in Journal of Shanghai University (English Edition) (1999)

Article

The contribution of root respiration ofPinus koraiensis seedlings to total soil respiration under elevated CO₂ concentrations

The impacts of elevated atmospheric CO₂ concentrations (500 μmol·mol⁻¹ and 700 μmol·mol⁻¹) on total soil respiration and the contribution of root respiration ofPinus koraiensis seedlings were investigated from Ma...

Ying Liu, Shi-jie Han, Xue-feng Li, Yu-mei Zhou… in Journal of Forestry Research (2004)

Article

A new chromone glycoside from Rhododendron spinuliferum

A new chromone glycoside, 3,5,7-trihydroxylchromone-3-O-α-L-arabinopyranoside (1), together with quercetin (2), (+)-catechin (3), (−)-epi-catechin (4) were isolated from the aerial parts of Rhododendron spinulife...

Gang Chen, Hui Zi **, Xue Feng Li, Qi Zhang… in Archives of Pharmacal Research (2008)

Article

Flavonoids from Rhododendron decorum

Hui Zi **, Gang Chen, Xue Feng Li, Yun Heng Shen… in Chemistry of Natural Compounds (2009)

Article

Allelopathic potential of Artemisia frigida and successional changes of plant communities in the northern China steppe

In the northern China steppe, overgrazing has decreased the abundance of many species that were originally dominant, but increased the abundance of Artemisia frigida. We aimed to determine whether the adaptive an...

Xue Feng Li, Jian Wang, Ding Huang, Li Xue Wang, Kun Wang in Plant and Soil (2011)

Article

Ribbing disease (multiple diaphyseal sclerosis): a case report and literature review

Lin Lin Zhang, Wei Ming Jiang, Xue Feng Li, **g Yuan… in Journal of Orthopaedic Science (2011)

Article

Synthesis of 4,5,6-trisubstituted 2,3-pyridinediones via Mannich reaction and oxidation–Michael addition of 3-hydroxy-2(1H)-pyridinones

4-Substituted 3-hydroxy-2(1H)-pyridinones 2 were prepared by Mannich reaction of 3-hydroxy-2(1H)-pyridinones with secondary amines and formaldehyde. The isolated products were then reacted with aromatic amines in...

Wen Lin **e, Chuang ** **ao, Ling **e, Ying Zhou… in Research on Chemical Intermediates (2012)

Article

Sustained release of Semaphorin 3A from α-tricalcium phosphate based cement composite contributes to osteoblastic differentiation of MC3T3-E1 cells

The reinforcement of calcium phosphate materials with silk fibroin (SF) has been one of the strategies to overcome the brittleness. However, the lack of osteoinductivity may still restrict their further use. T...

**-Ning Wang, Bin Pi, Peng Wang, Xue-Feng Li… in Frontiers of Materials Science (2015)

Article

Historical introduction, geographical distribution, and biological characteristics of alien plants in China

Using the published literature and records, this study investigated the historical introduction, geographical distribution, and biological characteristics of 404 alien plants in 32 provinces (including municip...

Chao Chen, Qing-Hai Wang, Ju-Ying Wu, Ding Huang… in Biodiversity and Conservation (2017)

Chapter

Quantitative Description of Orthotropic Fabric of Sand

Based on the microscopic theory of sand fabric, the novel amplitude parameters describing the spatial arrangement of non-spherical particles is defined, and the verification with the microscopic test for Toyou...

Xue-feng Li, Yu-qi He, **g-qiao Liu, Wei Wu in Recent Advances in Geotechnical Research (2019)

Chapter and Conference Paper

Research on Teaching Methods Based on Students’ Autonomous Knowledge Aggregation

In information technology have driven changes in traditional educational concepts, models and methods. The main change brought about by the development of Internet and information technology in the study of te...

Xue Feng Li in Human Centered Computing (2019)

Chapter

A Novel Description of Plastic Strain Direction

The paper presents a plastic flow equation based on a property-dependent potential theory for geomaterials to describe the flow of sand during loadings involving rotation of principal stress direction. To over...

Xue-feng Li, Yu-qi He, Liang Kong, Wei Wu… in Recent Advances in Geotechnical Research (2019)

Article

Preparation and Cytotoxic Activity of 3,19-Analogues of 12-Thioether Andrographolide

Andrographolide is a labdane diterpenoid from Andrographis paniculata and has been used in the clinic for several decades to treat a variety of diseases in east Asia. In the present study, modification of 12-t...

Chun-Ru Cheng, Zhi Zheng, Ren-Ming Liang, Xue-Feng Li… in Chemistry of Natural Compounds (2020)

Article

Involvement of Putrescine, Nitric Oxide, and Hydrogen Peroxide in Methyl Jasmonate-Induced Ginsenoside Synthesis in Adventitious Root Cultures of Panax ginseng C.A. Meyer

The adventitious root (AR) culture of Panax ginseng C.A. Meyer is an alternative route for mass production of ginsenosides. During the AR culture of P. ginseng, methyl jasmonate (MeJA) is frequently used as an ab...

**ao-Han Wu, Ming-Zhi Fan, Xue-Feng Li… in Journal of Plant Growth Regulation (2021)