Search results for: Shuangquan Zhang

Items from 1 to 20 out of 98 results

article

Sr‐O‐C isotope signatures reveal herbivore niche‐partitioning in a Cretaceous ecosystem

Thomas M. Cullen, Shuangquan Zhang, Joseph Spencer, Brian Cousens, more

Stable and radiogenic isotopes represent powerful tools for reconstructing ecological and environmental patterns in ancient ecosystems. The Cretaceous of North America preserves a diverse record of fossil vertebrates well‐suited to analysis using these proxies, contained within many well‐sampled and stratigraphically well‐characterized intervals. Multiple hypotheses have been offered to explain the...

article

Stability of the linear chain structure for ¹²C in covariant density functional theory on a 3D lattice

ZhengXue Ren, ShuangQuan Zhang, PengWei Zhao, Naoyuki Itagaki, more

Science China Physics, Mechanics & Astronomy > 2019 > 62 > 11 > 1-8

The stability of the linear chain structure of three α clusters for ¹²C against the bending and fission is investigated in the cranking covariant density functional theory, in which the equation of motion is solved on a 3D lattice with the inverse Hamiltonian and the Fourier spectral methods. Starting from a twisted three α initial configuration, it is found that the linear chain structure is stable...

article

The first ground tooth artifact in Upper Palaeolithic China

Yue Zhang, Shuangquan Zhang, Xing Gao, Fuyou Chen

Science China Earth Sciences > 2019 > 62 > 2 > 403-411

Scholars have long recognized the importance of organic artifacts to an improved understanding of the economic and social behavior of Palaeolithic hominins. However, in contrast to archaeological studies in other parts of the world, osseous industries from China have received only limited attention. As one of the first steps aiming at tipping this balance, the current paper examines, therefore, a...

article

Core–shell structured CoNi₂S₄@polydopamine nanocomposites as advanced electrode materials for supercapacitors

Xiaobo Ding, Junsheng Zhu, Guangzhou Hu, Shuangquan Zhang

Ionics > 2019 > 25 > 2 > 897-901

Novel core–shell structured CoNi₂S₄@polydopamine nanocomposites have been successfully developed as advanced electrode materials for supercapacitors. The CoNi₂S₄ nanoparticles are tightly wrapped by polydopamine, forming a hierarchical core/shell network, which benefits the improvement of the electrochemical properties. The electrochemical performance of the as-prepared materials had been investigated...

article

Linking spatial grids of the old and new excavations at Zhoukoudian Locality 1, China

Feng Li, Fuyou Chen, Shuangquan Zhang, Xing Gao

Journal of Human Evolution > 2018 > 121 > C > 166-169

article

One-pot synthesis of Sn/graphene/polydopamine ternary nanocomposites with improving lithium storage properties

Yanan Li, Junsheng Zhu, Guangzhou Hu, Shuangquan Zhang

Ionics > 2018 > 24 > 11 > 3699-3703

Sn/graphene/polydopamine ternary nanocomposites have been synthesized through a facile precipitation method. Sn nanoparticles are closely wrapped by graphene in the nanocomposites as compared to Sn/graphene, which is beneficial not only to reduce the volumetric change but also to boost the conductivity of the nanocomposites. The lithium storage properties of the materials have been investigated by...

article

Co-gasification of thermally pretreated wheat straw with Shengli lignite for hydrogen production

Xiaoqin Yang, Xuejing Liu, Rui Li, Chuang Liu, more

Renewable Energy > 2018 > 117 > C > 501-508

Wheat straw (WS) was thermally pretreated at 200, 300 and 400 °C in a muffle furnace, respectively, before co-gasified with Shengli lignite (SL). The results from thermogravimetric analyzer (TGA) experiments showed that interaction of solid phases between SL and the pretreated WSs occurred at the gasification stage rather than the pyrolysis stage and the synergy varied with the biomass pretreatment...

article

Comparison of metamorphic zircons from granulite xenoliths and granulite terrain in northern North China Craton

Jun Hu, Neng Jiang, Wenbo Fan, Shuangquan Zhang

Precambrian Research > 2017 > 303 > C > 414-427

We conduct a study of petrography, geochronology, trace element and Hf isotope compositions on zircons from granulite terrain and granulite xenoliths in the Zhangjiakou region, northern North China Craton. Most zircons from both types of granulite have core-rim structure in their CL images. All the magmatic zircon cores yield essentially identical ∼2.5Ga ages, whereas metamorphic zircons yield ages...

article

Rapamycin attenuates BAFF‐extended proliferation and survival via disruption of mTORC1/2 signaling in normal and neoplastic B‐lymphoid cells

Qingyu Zeng, Shanshan Qin, Hai Zhang, Beibei Liu, more

Journal of Cellular Physiology > 233 > 1 > 516 - 529

B cell activating factor from the TNF family (BAFF) stimulates B‐cell proliferation and survival, but excessive BAFF promotes the development of aggressive B cells leading to malignant and autoimmune diseases. Recently, we have reported that rapamycin, a macrocyclic lactone, attenuates human soluble BAFF (hsBAFF)‐stimulated B‐cell proliferation/survival by suppressing mTOR‐mediated PP2A‐Erk1/2 signaling...

article

Porous solids by the pyrolysis of residue obtained after NaOH extraction of lignite

Xiaoqin Yang, Kaiwen Zhu, Xiaoming Yue, Shuangquan Zhang, more

Journal of Porous Materials > 2018 > 25 > 3 > 897-904

To utilize the lignite residues after humic acid extraction, experimental studies on pyrolysis of Xianfeng lignite residue (XLR) were conducted with a fixed-bed reactor under nitrogen atmosphere in the temperature range of 500–900 °C. The product gas yield and composition, and the properties of solid product were investigated and compared with those obtained from pyrolysis of Xianfeng lignite (XL)...

article

Facile fabrication of coal-derived activated carbon/Co₃O₄ nanocomposites with superior electrochemical performance

Junsheng Zhu, Shuangquan Zhang, Dianlong Wang

Ionics > 2017 > 23 > 7 > 1927-1931

Coal-derived activated carbon/Co₃O₄ nanocomposites have been prepared via a facile two-step synthetic strategy. Results indicate that Co₃O₄ nanoparticles possess a uniform distribution on the surface of coal-derived activated carbon. The electrochemical performance of the as-prepared samples had been investigated by cyclic voltammetry and galvanostatic charge/discharge measurement. Results suggest...

article

A preliminary application of dental cementum incremental analysis to determine the season-of-death of equids from the Xujiayao site, China

JingShu Li, ShuangQuan Zhang, Henry T. Bunn, Akshay Sarathi, more

Science China Earth Sciences > 2017 > 60 > 6 > 1183-1188

Seasonality study of Paleolithic archaeological faunal assemblages is important for reconstructing modes of animal death and ancient hominin strategies for prey acquisition. The dental cementum of animal teeth records the season of an individual animal in which it died, providing the necessary evidence for determining any patterns in season of death. This article presents the procedure and preliminary...

article

Identification and characterization of a gamma-interferon-inducible lysosomal thiol reductase homolog from guinea pig (Cavia porcellus) that exhibits thiol reductase activity in vitro

Lei Ma, Fang Cao, Runze Tang, Jiaxin Zhang, more

Research in Veterinary Science > 2017 > 111 > C > 81-84

Gamma-interferon-inducible lysosomal thiol reductase (GILT) is a key enzyme in the antigen processing and presentation pathway whereby it reduces disulfide bonds at an acidic pH. In this study, a homolog of GILT from guinea pigs (designated gpGILT) was identified and characterized using bioinformatic methods and bioactivity assays. The open reading frame of gpGILT is 705bp in length and encodes 234...

article

Environmental reconstruction and dating of Shizitan 29, Shanxi Province: An early microblade site in north China

Yanhua Song, David J. Cohen, Jinming Shi, Xiaohong Wu, more

Journal of Archaeological Science > 2017 > 79 > C > 19-35

Global cooling during the Last Glacial Maximum (LGM) posed significant challenges to peoples living in northern Eurasia. Using micromorphology, pollen and non-pollen palynomorphs (NPP), and faunal analyses, this study reconstructs the local paleoenvironmental contexts of repeated ephemeral occupations at Shizitan 29 in Shanxi Province, North China, across the LGM, from ca. 28 to 18 Ka cal BP, followed...

article

β-decay study of neutron-rich nucleus ³⁴Al

Rui Han, XiangQing Li, WeiGuang Jiang, ZhiHuan Li, more

Science China Physics, Mechanics & Astronomy > 2017 > 60 > 4 > 1-5

These authors contributed equally to this work.

article

Identification, characterization and bioactivity of tumor necrosis factor (TNF)-related apoptosis-inducing ligand from Equus caballus

Lei Ma, Ming Sang, Jiaxin Zhang, Shuangquan Zhang

Developmental & Comparative Immunology > 2017 > 67 > C > 340-349

Tumor necrosis factor (TNF)-related apoptosis-inducing ligand (TRAIL) is a member of the TNF superfamily and plays multifunctional roles in the immune system. In the present study, a homolog of TRAIL from the Mongolian horse (named ecTRAIL) was identified and characterized. The 870-bp open reading frame encodes a polypeptide of 289 amino acid residues with a predicted molecular weight of 33.47 kDa...

article

IL-2, IL-4, IFN-γ or TNF-α enhances BAFF-stimulated cell viability and survival by activating Erk1/2 and S6K1 pathways in neoplastic B-lymphoid cells

Lin Gui, Qingyu Zeng, Zhigang Xu, Hai Zhang, more

Cytokine > 2016 > 84 > C > 37-46

B-cell activating factor of the TNF family (BAFF) has been documented to act as a critical factor in the development of aggressive B lymphocytes and autoimmune diseases. However, the effect of various cytokines on BAFF-elicited neoplastic B-lymphoid cells is not known. In this study, we exhibited that administration of human soluble BAFF (hsBAFF), IL-2, IL-4, IFN-γ, or TNF-α alone increased cell viability...

article

Archean TTGs and sanukitoids from the Jiaobei terrain, North China craton: Insights into crustal growth and mantle metasomatism

Neng Jiang, Jinghui Guo, Wenbo Fan, Jun Hu, more

Precambrian Research > 2016 > 281 > C > 656-672

U–Pb zircon dating for 10 rock samples collected from the Archean Jiaobei terrain of the eastern block of the North China craton (NCC) yield three groups of ages: ∼2.9Ga, ∼2.7Ga and ∼2.5Ga. Thirteen rock samples studied can be classified into a low Mg# (molecular Mg/(Mg+Fe)) (Mg#=34–52) and a high Mg# group (Mg#=52–61), respectively. The low Mg# rocks are typical Archean TTGs with emplacement ages...

article

Low-temperature catalytic steam reforming of toluene over activated carbon supported nickel catalysts

Xuejing Liu, Xiaoqin Yang, Chuang Liu, Peng Chen, more

Journal of the Taiwan Institute of Chemical Engineers > 2016 > 65 > C > 233-241

In order to decrease the reaction temperature of catalytic cracking of tar derived from biomass gasification and prolong the lifetime of catalyst, nickel supported on activated carbon (Ni/AC) catalysts were prepared by impregnation method and used in steam reforming of toluene, a model tar compound, in a fixed bed reactor. The physiochemical properties of the catalysts were analyzed by N₂ adsorption,...

article

A taphonomic study on the skeletal remains of Cervus (Sika) grayi from layer 3 of the Peking man site at Zhoukoudian during the 2009–2010 field seasons

Shuangquan Zhang, Fuyou Chen, Yue Zhang, Jingshu Li, more

Quaternary International > 2016 > 400 > C > 36-46

Re-excavation of the Peking man site at Zhoukoudian was initiated in 2009. A taphonomic analysis of the skeletal remains of Cervus (Sika) grayi, a dominant species from Layer 3 of the extant West Section of the site strongly negates a role played by hominins in the accumulation and modification of the bones. Instead, it is argued here that some individuals of this medium-sized deer species were probably...

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INFONA - science communication portal

Search results for: Shuangquan Zhang

Sr‐O‐C isotope signatures reveal herbivore niche‐partitioning in a Cretaceous ecosystem

Stability of the linear chain structure for ¹²C in covariant density functional theory on a 3D lattice

The first ground tooth artifact in Upper Palaeolithic China

Core–shell structured CoNi₂S₄@polydopamine nanocomposites as advanced electrode materials for supercapacitors

Linking spatial grids of the old and new excavations at Zhoukoudian Locality 1, China

One-pot synthesis of Sn/graphene/polydopamine ternary nanocomposites with improving lithium storage properties

Co-gasification of thermally pretreated wheat straw with Shengli lignite for hydrogen production

Comparison of metamorphic zircons from granulite xenoliths and granulite terrain in northern North China Craton

Rapamycin attenuates BAFF‐extended proliferation and survival via disruption of mTORC1/2 signaling in normal and neoplastic B‐lymphoid cells

Porous solids by the pyrolysis of residue obtained after NaOH extraction of lignite

Facile fabrication of coal-derived activated carbon/Co₃O₄ nanocomposites with superior electrochemical performance

A preliminary application of dental cementum incremental analysis to determine the season-of-death of equids from the Xujiayao site, China

Identification and characterization of a gamma-interferon-inducible lysosomal thiol reductase homolog from guinea pig (Cavia porcellus) that exhibits thiol reductase activity in vitro

Environmental reconstruction and dating of Shizitan 29, Shanxi Province: An early microblade site in north China

β-decay study of neutron-rich nucleus ³⁴Al

Identification, characterization and bioactivity of tumor necrosis factor (TNF)-related apoptosis-inducing ligand from Equus caballus

IL-2, IL-4, IFN-γ or TNF-α enhances BAFF-stimulated cell viability and survival by activating Erk1/2 and S6K1 pathways in neoplastic B-lymphoid cells

Archean TTGs and sanukitoids from the Jiaobei terrain, North China craton: Insights into crustal growth and mantle metasomatism

Low-temperature catalytic steam reforming of toluene over activated carbon supported nickel catalysts

A taphonomic study on the skeletal remains of Cervus (Sika) grayi from layer 3 of the Peking man site at Zhoukoudian during the 2009–2010 field seasons

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