scholarly journals Facile synthesis of Cu/Ni alloy nanospheres with tunable size and elemental ratio

RSC Advances ◽  
2017 ◽  
Vol 7 (60) ◽  
pp. 37823-37829 ◽  
Author(s):  
Jinglei Liu ◽  
Yiqun Zheng ◽  
Shifeng Hou
Keyword(s):  
High Purity ◽  
Facile Synthesis ◽  
Elemental Ratios ◽  
Elemental Ratio ◽  
Copper Nickel ◽  
Ni Alloy

We report a facile synthesis of copper/nickel (Cu/Ni) alloy nanospheres in high purity and with tunable, well-controlled sizes and elemental ratios.

Facile synthesis of anhydrous Li 2 B 12 H 12 with high purity by solvent-free method

2017 ◽  
Vol 464 ◽  
pp. 147-151 ◽  
Author(s):  
Liqing He ◽  
Huaiyu Shao ◽  
Michael Felderhoff ◽  
Hai-Wen Li ◽  
Xiangnan Li ◽  
...  
Keyword(s):  
High Purity ◽  
Solvent Free ◽  
Facile Synthesis

Facile synthesis of snowflake-like magnetic Fe–Ni alloy with high magnetic properties

2012 ◽  
Vol 16 (6) ◽  
pp. 413-416 ◽  
Author(s):  
Y. Y. Sun ◽  
Y. J. Zhang ◽  
Y. Tian ◽  
Y. Q. Liu ◽  
G. Z. Zhao ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Facile Synthesis ◽  
Ni Alloy

scholarly journals Exploring the controls on element ratios in middle Eocene samples of the benthic foraminifera <i>Oridorsalis umbonatus</i>

2012 ◽  
Vol 8 (6) ◽  
pp. 1957-1971 ◽  
Author(s):  
C. F. Dawber ◽  
A. K. Tripati
Keyword(s):  
Benthic Foraminifera ◽  
Bottom Water ◽  
Middle Eocene ◽  
Environmental Parameters ◽  
Intermediate Water ◽  
Saturation State ◽  
Bottom Water Temperature ◽  
Elemental Ratios ◽  
Elemental Ratio ◽  
Element Ratios

Abstract. Culturing studies and empirically based core top calibrations have been used to infer that elemental ratios in benthic foraminifera can be used as proxies to reconstruct past variations in bottom water temperature and saturation state (Δ [CO32−]). However the mechanisms linking elemental ratios to these parameters are poorly constrained. Here, we explore the environmental parameters influencing the incorporation of B, Li, Sr and Mg in Oridorsalis umbonatus in early Cenozoic sediments from Ocean Drilling Program Site 1209. We investigate the influence of middle Eocene variations in intermediate water Δ [CO32−] using relationships developed from core top samples. The fidelity of bottom water Δ[CO32−] reconstructions based on single element ratios is assessed by comparing the X/Ca-based reconstructions to each other and to carbon cycle proxy records (benthic foraminifera δ13C, organic carbon content, foraminifera dissolution indices), and a seawater δ18O reconstruction for Site 1209. Discrepancies in the reconstructed Δ[CO32−] values based on these different metal ratios suggest that there are still gaps in our understanding of the parameters influencing X/Ca and demonstrate that caution is required when interpreting palaeo-reconstructions that are derived from a single elemental ratio. The downcore record of O. umbonatus Mg/Ca does not exhibit any similarities with the Li/Ca, B/Ca and Sr/Ca records, suggesting that the environmental parameters influencing Mg/Ca may be different for this species, consistent with temperature as the strongest control on this elemental ratio. This hypothesis is supported by the coefficients of multiple linear regression models on published Mg/Ca data. An incomplete understanding of the controls on elemental incorporation into benthic foraminifera hinders our ability to confidently quantify changes in saturation state using single X/Ca reconstructions over a range of timescales.

scholarly journals Physiological Changes and Elemental Ratio of Scrippsiella trochoidea and Heterosigma akashiwo in Different Growth Phase

Water ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 132
Author(s):  
Xiaofang Liu ◽  
Yang Liu ◽  
Md Abu Noman ◽  
Satheeswaran Thangaraj ◽  
Jun Sun
Keyword(s):  
Organic Nitrogen ◽  
Growth Period ◽  
Heterosigma Akashiwo ◽  
Physiological Changes ◽  
Scrippsiella Trochoidea ◽  
Average Cell ◽  
Physiological Models ◽  
Elemental Ratios ◽  
Chl A ◽  
Elemental Ratio

The elemental ratios in phytoplankton are important for predicting biogeochemical cycles in the ocean. However, understanding how these elements vary among different phytoplankton taxa with physiological changes remains limited. In this paper, we determine the combined physiological–elemental ratio changes of two phytoplankton species, Scrippsiella trochoidea (Dinophyceae) and Heterosigma akashiwo (Raphidophyceae). Our results show that the cell growth period of S. trochoidea (26 days) was significantly shorter than that of H. akashiwo (32 days), with an average cell abundance of 1.21 × 104 cells·mL−1 in S. trochoidea and 1.53 × 105 cells·mL−1 in H. akashiwo. The average biovolume of S. trochoidea (9.71 × 103 μm3) was higher than that of H. akashiwo (0.64 × 103 μm3). The physiological states of the microalgae were assessed based on elemental ratios. The average ratios of particulate organic nitrogen (PON) to chlorophyll-a (Chl-a) and particulate organic carbon (POC) to Chl-a in S. trochoidea (57.32 and 168.16) were higher than those of H. akashiwo (9.46 and 68.86); however, the ratio of POC/PON of the two microalgae was nearly equal (6.33 and 6.17), indicating that POC/Chl-a may be lower when the cell is actively growing. The physiological variation, based on the POC/Chl-a ratio, in different phytoplankton taxa can be used to develop physiological models for phytoplankton, with implications for the marine biogeochemical cycle.

Facile synthesis of 3-arylidene-1,3-dihydroindol-2-ones catalysed by a Brønsted acidic ionic liquid

2008 ◽  
Vol 2008 (11) ◽  
pp. 642-643 ◽  
Author(s):  
Yi Hu ◽  
Hui Kang ◽  
Bi-Wen Zeng ◽  
Ping Wei ◽  
He Huang
Keyword(s):  
Ionic Liquid ◽  
High Purity ◽  
Reaction Times ◽  
Aromatic Aldehydes ◽  
Environmentally Benign ◽  
Facile Synthesis ◽  
Acidic Ionic Liquid ◽  
Brønsted Acidic Ionic Liquid ◽  
High Yields ◽  
Work Up

A series of 3-arylidene-1,3-dihydroindol-2-one derivatives were conveniently synthesised by the condensation of aromatic aldehydes with 1,3-dihydroindol-2-one using a Brønsted acidic ionic liquid as a dual solvent-catalyst. This method has the advantages of short reaction times, simple work-up, high yields with high purity, being environmentally benign and the ionic liquid can be reused.

Facile synthesis of CaCO3 and investigation on structural and optical properties of high purity crystalline calcite

2019 ◽  
Vol 243 ◽  
pp. 78-85 ◽  
Author(s):  
N.H. Sulimai ◽  
Rozina Abdul Rani ◽  
Z. Khusaimi ◽  
S. Abdullah ◽  
M.J. Salifairus ◽  
...  
Keyword(s):  
Optical Properties ◽  
High Purity ◽  
Structural And Optical Properties ◽  
Facile Synthesis

Facile synthesis of high-purity single-twinned Au nanocrystals through manipulation of reaction kinetics

CrystEngComm ◽  
2015 ◽  
Vol 17 (35) ◽  
pp. 6636-6640 ◽  
Author(s):  
Yi Wang ◽  
Wensheng Fu ◽  
Xue Hu
Keyword(s):  
Reaction Kinetics ◽  
High Purity ◽  
Facile Synthesis
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