A Comparison of the Reproduction ofBievicoryne brassicae andMyzus persicae in Relation to Soluble Nitrogen Concentration and Leaf Age in the Brussels Sprout Plant. Ein Vergleich der Vermehrung vonBrevicoryne Brassicae undMyzus persicae in Beziehung zum Gehalt löslichen Stickstoffs und dem Blattalter von Rosenkohlpflanzen.

1969 ◽  
Vol 42 (6) ◽  
pp. 95-95
Author(s):  
H. F. Emden ◽  
M. A. Bashford
Keyword(s):  
Nitrogen Concentration ◽  
Leaf Age ◽  
Soluble Nitrogen ◽  
Brussels Sprout

scholarly journals Effects of Different Soils on the Biomass and Photosynthesis of Rumex nepalensis in Subalpine Region of Southwestern China

Forests ◽  
2022 ◽  
Vol 13 (1) ◽  
pp. 73
Author(s):  
Heliang He ◽  
Lan Yu ◽  
Xiaocheng Yang ◽  
Lin Luo ◽  
Jia Liu ◽  
...  
Keyword(s):  
Population Dynamics ◽  
Forest Ecosystems ◽  
Soil Microbes ◽  
Extracellular Enzymes ◽  
Nitrogen Concentration ◽  
Southwestern China ◽  
Shoot Biomass ◽  
Soluble Nitrogen ◽  
Total Biomass ◽  
Picea Asperata

The performance of Rumex nepalensis, an important medicinal herb, varies significantly among subalpine grasslands, shrublands and forest ecosystems in southwestern China. Plant–soil feedback is receiving increasing interest as an important driver influencing plant growth and population dynamics. However, the feedback effects of soils from different ecosystems on R. nepalensis remain poorly understood. A greenhouse experiment was carried out to identify the effects of different soil sources on the photosynthesis and biomass of R. nepalensis. R. nepalensis was grown in soils collected from the rooting zones of R. nepalensis (a grassland soil, RS treatment), Hippophae rhamnoides (a shrub soil, HS treatment), and Picea asperata (a forest soil, PS treatment). The chlorophyll contents, net photosynthetic rates, and biomasses of R. nepalensis differed significantly among the three soils and followed the order of RS > HS > PS. After soil sterilization, these plant parameters followed the order of RS > PS > HS. The total biomass was 16.5 times higher in sterilized PS than in unsterilized PS, indicating that the existence of soil microbes in P. asperata forest ecosystems could strongly inhibit R. nepalensis growth. The root to shoot biomass ratio of R. nepalensis was the highest in the sterilized PS but the lowest in the unsterilized PS, which showed that soil microbes in PS could change the biomass allocation. Constrained redundancy analysis and path analysis suggested that soil microbes could impact the growth of R. nepalensis via the activities of soil extracellular enzymes (e.g., β-1,4-N-acetylglucosaminidase (NAG)) in live soils. The soil total soluble nitrogen concentration might be the main soil factor regulating R. nepalensis performance in sterilized soils. Our findings underline the importance of the soil microbes and nitrogen to R. nepalensis performance in natural ecosystems and will help to better predict plant population dynamics.

Preparation and Antioxidant Activities of Peanut (Arachin conarachin L.) Protein Peptides by Bacillus Subtilis Solid State Fermentation Method

2014 ◽  
Vol 887-888 ◽  
pp. 601-604
Author(s):  
Li Na Yu ◽  
Jian Xiong Feng ◽  
Qiang Qiang Ming ◽  
Qing Li Yang ◽  
Chu Shu Zhang ◽  
...  
Keyword(s):  
Bacillus Subtilis ◽  
Free Radicals ◽  
Solid State ◽  
Solid State Fermentation ◽  
Antioxidant Activities ◽  
Nitrogen Concentration ◽  
Bacterial Suspension ◽  
Soluble Nitrogen ◽  
Fermentation Method ◽  
Nutrient Salt

The objective of this work is to study on preparation of peanut protein peptide by bacillus subtilis solid state fermentation method. Results indicated that soluble nitrogen concentration of protein peptide could reach 122.86mg/mL, 1, 1-diphenyl-2-picryl-hydrazyl (DPPH) and hydroxyl free radicals scavenging rates were 85.22% and 84.88%, respectively, under the following optimum conditions: nutrient salt solution of 16.3mL, bacterial suspension volume of 3.8mL, temperature of 45°C, and time of 41h. IC50values for scavenging of DPPH, hydroxyl and superoxide anion free radicals rates, iron and copper ion chelating rates, inhibition rate of anti-lipid peroxidation were 2.88mg/mL, 4.63mg/mL, 1.22mg/mL, 0.04mg/mL, 0.94mg/mL, 3.78mg/mL, respectively. When absorbance value of iron and molybdenum reduction capacities was 0.5, the required protein peptide concentrations were 7.28mg/mL and 1.85mg/mL, respectively.

Preparation and Antioxidant Activities of Peanut (Arachin conarachin L.) Protein Peptides by Lactobacillus Solid State Fermentation Method

2014 ◽  
Vol 668-669 ◽  
pp. 1573-1576
Author(s):  
Li Na Yu ◽  
Qing Li Yang ◽  
Jian Xiong Feng ◽  
Jie Sun ◽  
Jie Bi ◽  
...  
Keyword(s):  
Solid State ◽  
Solid State Fermentation ◽  
Antioxidant Activities ◽  
Nitrogen Concentration ◽  
Peanut Meal ◽  
Peanut Protein ◽  
Liquid Volume ◽  
Soluble Nitrogen ◽  
Fermentation Method ◽  
Nutrient Salt

The objective of this work is to study on the preparation of peanut protein peptide by lactobacillus solid state fermentation method and to provide a theoretical basis for further investigating peanut meal special protein material product. Results indicated that the soluble nitrogen concentration of peanut protein peptide could reach 70.92mg/ml, 1, 1-diphenyl-2-picryl-hydrazyl (DPPH) and hydroxyl free radicals scavenging rates were 95.00% and 86.28%, respectively, under the following optimum conditions: addition of nutrient salt solution volume of 25ml, lactobacillus liquid volume of 5ml, temperature of 25.0 °C, and time of 72h. Peanut protein peptide had good antioxidant activities.

Water soluble nitrogen forms on two different soils as affected by biofertilization

2007 ◽  
Vol 35 (2) ◽  
pp. 597-600
Author(s):  
Ida Kincses ◽  
Tibor Filep ◽  
Péter Nagy ◽  
Andrea Kovács
Keyword(s):  
Water Soluble ◽  
Soluble Nitrogen ◽  
Nitrogen Forms ◽  
Different Soils

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.

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