Effect of nitrogen concentration, source, and phosphate concentration on accumulation of biomass and calycosin-7-O-β-D-glucoside in Astragalus membranaceus adventitious roots

2020 ◽  
Vol 56 (4) ◽  
pp. 407-414
Author(s):  
Heyan Jin ◽  
Yang Yu ◽  
Shijie Hu ◽  
Xueli Quan ◽  
Songquan Wu
Keyword(s):  
Adventitious Roots ◽  
Nitrogen Concentration ◽  
Phosphate Concentration ◽  
Astragalus Membranaceus

Triterpene and Flavonoid Biosynthesis and Metabolic Profiling of Hairy Roots, Adventitious Roots, and Seedling Roots of Astragalus membranaceus

2015 ◽  
Vol 63 (40) ◽  
pp. 8862-8869 ◽  
Author(s):  
Yun Ji Park ◽  
Aye Aye Thwe ◽  
Xiaohua Li ◽  
Yeon Jeong Kim ◽  
Jae Kwang Kim ◽  
...  
Keyword(s):  
Hairy Roots ◽  
Metabolic Profiling ◽  
Adventitious Roots ◽  
Flavonoid Biosynthesis ◽  
Astragalus Membranaceus ◽  
Seedling Roots

scholarly journals Tendency and Causes Analysis of Marine Water Quality of Jinzhou Bay

2020 ◽  
Vol 206 ◽  
pp. 03003
Author(s):  
Zhao Junjie ◽  
Shou Youping ◽  
Bai Jing ◽  
Wang Ning
Keyword(s):  
Water Quality ◽  
Inorganic Nitrogen ◽  
Nitrogen Concentration ◽  
Temporal Trends ◽  
Average Concentration ◽  
Phosphate Concentration ◽  
Marine Water ◽  
Upward Trend ◽  
Article Analysis

Based on the two monitoring data of Jinzhou Bay in July 2008, September 2013 and September 2016, this article analysis the temporal trends of marine water quality of Jinzhou Bay. The average concentration of COD, inorganic nitrogen and phosphate is between 1.09mg/L~1.45mg/L, 0.42mg/L~0.711mg/L and 0.006mg/L~0.03mg/L, respectively. The concentration of inorganic nitrogen showed a downward trend while the concentration of phosphate showed an increased trend. Meanwhile, the concentration of COD had no significant change. Results showed that the inorganic nitrogen concentration and phosphate concentration have good correlation with eutrophication index and Eutrophication parameters（E）showing a clear upward trend. The emission of active phosphates and inorganic nitrogen from land-based pollutants are the main cause of this phenomenon.

The Correlation of Adhesion Strength with Barrier Structure in Cu Metallization

2003 ◽  
Vol 766 ◽  
Author(s):  
A. Sekiguchi ◽  
J. Koike ◽  
K. Ueoka ◽  
J. Ye ◽  
H. Okamura ◽  
...  
Keyword(s):  
Thin Films ◽  
Adhesion Strength ◽  
Nitrogen Concentration ◽  
Scratch Test ◽  
Barrier Structure ◽  
Barrier Layers ◽  
Cu Metallization ◽  
Microstructure Observation ◽  
Sputter Deposited ◽  
Sulfur Containing

AbstractAdhesion strength in sputter-deposited Cu thin films on various types of barrier layers was investigated by scratch test. The barrier layers were Ta1-xNx with varied nitrogen concentration of 0, 0.2, 0.3, and 0.5. Microstructure observation by TEM indicated that each layer consists of mixed phases of β;-Ta, bcc-TaN0.1, hexagonal-TaN, and fcc-TaN, depending on the nitrogen concentration. A sulfur- containing amorphous phase was also present discontinuously at the Cu/barrier interfaces in all samples. Scratch test showed that delamination occurred at the Cu/barrier interface and that the overall adhesion strength increased with increasing the nitrogen concentration. A good correlation was found between the measured adhesion strength and the composing phases in the barrier layer.

Decomposition and nitrogen mineralization from green manures intercropped with coffee tree

2018 ◽  
Vol 13 (1) ◽  
pp. 23
Author(s):  
Rosileyde Golçalves Siqueira Cardoso ◽  
Adriene Woods Pedrosa ◽  
Mateus Cupertino Rodrigues ◽  
Ricardo Henrique Silva Santos ◽  
Paulo Roberto Cecon ◽  
...  
Keyword(s):  
Nitrogen Mineralization ◽  
N Mineralization ◽  
Dry Matter ◽  
Nitrogen Concentration ◽  
Growth Time ◽  
Dry Matter Content ◽  
Green Manures ◽  
Coffee Tree ◽  
Jack Bean ◽  
Hyacinth Bean

The knowledge about the rate of decomposition and nitrogen mineralization of green manures provides synchronization with the higher absorption stage by the coffee tree. The rate of decomposition and nitrogen mineralization varies according to the species of green manure and with the environmental factors. The aim of the present study was to evaluate the decomposition and nitrogen mineralization of two green manures intercropped with coffee trees for three different periods. The experiment was divided into two designs for statistical analysis, one referring to the characterization of plant material (fresh mass, dry matter, dry matter content, nitrogen concentration and accumulation in the jack bean (Canavalia ensiformis) and hyacinth bean (Dolichos lablab) and another to evaluate the rate of decomposition and N mineralization of these species. The decomposition rate decreased in both species as their growth time increased in the field. The decomposition was influenced by the phenology of green manures. Nitrogen mineralization of the jack bean decreased as the growth period in the field increased and was faster than hyacinth bean only when cut at 60 days. The N mineralization was slower than mass decomposition in both species.

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