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Showing 1 to 12 of 4840 entries
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Phosphatized multicellular algae in the Neoproterozoic Doushantuo Formation, China, and the early evolution of florideophyte red algae

STEM and diversification

Knoll AH, Xiao S, Yuan X.
GSID: _alyIjaASIoJ
S Xiao, AH Knoll, X Yuan… - American Journal of …, 2004 - Wiley Online Library

… rocks; (2) the initial diversification of the florideophytes … stem groups and Mesozoic crown groups, we should search connecting fossils in Paleozoic rocks. Several taxa of possible stem …

The Weng'an biota and the Ediacaran radiation of multicellular eukaryotes

STEM and diversify

Muscente AD, Xiao S.
GSID: uNj1CE8hSdMJ
S Xiao, AD Muscente, L Chen, C Zhou… - National Science …, 2014 - academic.oup.com

… multicellular eukaryotes began to diversify only in the Ediacaran … that closed mitosis can occur in stem-group animals (red … along the stem (thick lines), ie in stem-group metazoans. …

Hierarchically structured materials for lithium batteries.

Nanotechnology

Xiao J, Zheng J, Li X, Shao Y, Zhang JG.
PMID: 24067410
Nanotechnology. 2013 Oct 25;24(42):424004. doi: 10.1088/0957-4484/24/42/424004. Epub 2013 Sep 25.

The lithium-ion battery (LIB) is one of the most promising power sources to be deployed in electric vehicles, including solely battery powered vehicles, plug-in hybrid electric vehicles, and hybrid electric vehicles. With the increasing demand for devices of high-energy...

Multi-camera and structured-light vision system (MSVS) for dynamic high-accuracy 3D measurements of railway tunnels.

Sensors (Basel, Switzerland)

Zhan D, Yu L, Xiao J, Chen T.
PMID: 25875190
Sensors (Basel). 2015 Apr 14;15(4):8664-84. doi: 10.3390/s150408664.

Railway tunnel 3D clearance inspection is critical to guaranteeing railway operation safety. However, it is a challenge to inspect railway tunnel 3D clearance using a vision system, because both the spatial range and field of view (FOV) of such...

2,2,2-Trifluoroethylation of Styrenes with Concomitant Introduction of a Hydroxyl Group from Molecular Oxygen by Photoredox Catalysis Activated by Visible Light.

Organic letters

Li L, Huang M, Liu C, Xiao JC, Chen QY, Guo Y, Zhao ZG.
PMID: 26361093
Org Lett. 2015 Oct 02;17(19):4714-7. doi: 10.1021/acs.orglett.5b02177. Epub 2015 Sep 11.

The visible-light-induced photoredox difunctionalization reactions of styrenes with 1,1,1-trifluoro-2-iodoethane under an oxygen atmosphere in the presence of water give γ-trifluoromethyl alcohols. In this radical reaction, the oxygen atom in the product originates from molecular oxygen, and water is shown...

Stereospecific Synthesis of Tetrahydronaphtho[2,3-b]furans Enabled by a Nickel-Promoted Tandem Reductive Cyclization.

Organic letters

Peng Y, Xiao J, Xu XB, Duan SM, Ren L, Shao YL, Wang YW.
PMID: 27658859
Org Lett. 2016 Oct 07;18(19):5170-5173. doi: 10.1021/acs.orglett.6b02665. Epub 2016 Sep 23.

A Ni-mediated cascade to a stereoselective synthesis of trans-tetrahydronaphtho[2,3-b]furans is efficiently achieved for the first time. The mild reductive system can be easily generated from inexpensive and air-stable materials and shows a broad positional tolerance of substituents that were...

Research on the Optimum Water Content of Detecting Soil Nitrogen Using Near Infrared Sensor.

Sensors (Basel, Switzerland)

He Y, Xiao S, Nie P, Dong T, Qu F, Lin L.
PMID: 28880202
Sensors (Basel). 2017 Sep 07;17(9). doi: 10.3390/s17092045.

Nitrogen is one of the important indexes to evaluate the physiological and biochemical properties of soil. The level of soil nitrogen content influences the nutrient levels of crops directly. The near infrared sensor can be used to detect the...

Kinetics of cytochrome P450 enzymes for metabolism of sodium tanshinone IIA sulfonate in vitro.

Chinese medicine

Ouyang DS, Huang WH, Chen D, Zhang W, Tan ZR, Peng JB, Wang YC, Guo Y, Hu DL, Xiao J, Chen Y.
PMID: 27006687
Chin Med. 2016 Mar 22;11:11. doi: 10.1186/s13020-016-0083-z. eCollection 2016.

BACKGROUND: Sodium tanshinone IIA sulfonate (STS) is a water-soluble derivative of tanshinone IIA for treating cardiovascular disorders. The roles of cytochrome P450 enzymes (CYPs) in the metabolism of STS have remained unclear. This study aims to screen the main...

Absence of Exceptional Points in Square Waveguide Arrays with Apparently Balanced Gain and Loss.

Scientific reports

Liu Z, Zhang Q, Liu X, Yao Y, Xiao JJ.
PMID: 26948829
Sci Rep. 2016 Mar 07;6:22711. doi: 10.1038/srep22711.

The concept of parity-time (PT) symmetry in the field of optics has been intensively explored. This study shows the absence of exceptional points in a three-dimensional system composed of a square waveguide array with diagonally-balanced gain/loss distribution. More specifically,...

Inhibition of endoplasmic reticulum stress is involved in the neuroprotective effect of aFGF in neonatal hypoxic-ischaemic brain injury.

Oncotarget

Hu Y, Wang Z, Pan S, Fang M, Jiang H, Mao Y, Zhang H, Ji Y, Zhang F, Lin L, Lin Z, Xiao J.
PMID: 28977836
Oncotarget. 2017 Apr 29;8(37):60941-60953. doi: 10.18632/oncotarget.17524. eCollection 2017 Sep 22.

Acidic fibroblast growth factor (aFGF) has been shown to exert neuroprotective effects in experimental models and human patients. In this study, we investigated whether aFGF intranasal-treatment protected against neonatal hypoxic-ischaemic brain injury and evaluated the role of endoplasmic reticulum...

Ultrathin 90-degree sharp bends for spoof surface plasmon polaritons.

Optics express

Yang Y, Chen H, Xiao S, Mortensen NA, Zhang J.
PMID: 26367570
Opt Express. 2015 Jul 27;23(15):19074-81. doi: 10.1364/OE.23.019074.

At low frequencies outside the plasmonic range, strongly confined surface waves can be achieved on periodically structured metal surfaces, thereby allowing for the design of compact electromagnetic guiding devices. Here, we propose an approach to realize highly efficient transmission...

Macrocyclization in the Design of Organic n-Type Electronic Materials.

Journal of the American Chemical Society

Ball M, Zhong Y, Fowler B, Zhang B, Li P, Etkin G, Paley DW, Decatur J, Dalsania AK, Li H, Xiao S, Ng F, Steigerwald ML, Nuckolls C.
PMID: 27666433
J Am Chem Soc. 2016 Oct 05;138(39):12861-12867. doi: 10.1021/jacs.6b05474. Epub 2016 Sep 26.

Here, we compare analogous cyclic and acyclic π-conjugated molecules as n-type electronic materials and find that the cyclic molecules have numerous benefits in organic photovoltaics. This is the first report of such a direct comparison. We designed two conjugated...

Showing 1 to 12 of 4840 entries