NW Sci

First Technical University

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Papers

Citation

H-Index

i-10 index

Research Field

Advance in Malic Enzyme Gene Transformed Saccharomyces cerevisiae

Zhang Zhen-wen NW Sci

Winemaking

Ethanol Fermentation

Malic enzyme

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Testing of F_1 Seedling of Populus deltoides×P. cathayana

Gao Jian-she NW Sci

The studies on F_1 seedling of Populus deltoides×P. cathayana of individual trees of different provenances showed that mother parent and father parent had obvious effect on growth of F_1 seedling,Chang An's P. cathayana as male parent was better and P. deltoides as female parent was better too. As for the degree of infection there was not a evident variation among provenances and a little variation among individual trees of the same provenance.

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EFFECTS OF AMF AND FRANKIA COMBINED INOCULATION ON THE GROWTH OF HIPPOPHAE RHAMNOIDES

Ren Jia NW Sci

Effects of arbuscular mycorrhizal fungi (Glomus mosseae) and Frankia combined inoculation on the growth of Hippophae rhamnoides was investigated. The results showed the correlation and interaction of arbuscular mycorrhizal fungi and Frankia. Combined inoculation can stimulate more significantly the growth of the seedlings than individual inoculation.

Frankia

Hippophae rhamnoides

Glomus

Arbuscular mycorrhizal fungi

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On Innovating Design of Ming-Qing Dynasty Furniture

MU Ya NW Sci

Style of Ming Qing Dynasty furniture has an important position in the history of traditional Chinese furniture. The innovating design for them should follow the principles of ergonomics and dialectical thinking. The innovating thought should proceed from design, material, structure and so on, and combine tradition with modern times and characteristic of China.

Dialectic

Position (finance)

History of China

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Anatomical Study of Xeromorphism of the Leaves in Cuttings of Three Brushes in Yan′an Region

Zhang Zhen-shi NW Sci

The anatomical structure of the leaves in cuttings of three brushes was observed and studied in this paper. 5 important indexes were compared among three brushes. i.e, ratio of palisade tissues to spongy tissues, extent of the cell concentration of the first palisade layer, density of the lateral vascular bundle, thickness of the primary vein, cuticular thickness rariance of analysis was excellent significance to drought resistance in them. Therefore, multiple comparison between two species was analyzed respectively. Multiple comparison indicates that the order of sensitive degree is in turn extent of the cell concentration of the first palisade layer and thickness of the primary vein, ratio of palisade tissues to spongy tissues, density of the lateral vascular bundle and cuticular thickness. The order of drought resistance is Hippophae rhamnoides,Xanthoceras sorbifolia and Ostryopsis davidiana in no-weight index.

Cutting

Stomatal density

Spongy tissue

Drought Resistance

Vasa recta

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Variation of Peroxidase Isozyme on Natural Populations of Quercus variabilis

Xibei Linxueyuan xuebao (2003)

Zhou Jian NW Sci

Studies were accomplished on the genetic structure of three natural populations of Quercus variabilis with peroxidase isozyme. The results showed that the peroxidase isozyme of Q. variabilis consisted of three polymorphic loci: PODA, PODB and PODC. The percentage of polymorphic loci of every population was 100%. The mean of alleles was 2.300 and the expected heterozygosity was 0.651. Results also showed that higher variation on genetic locus of peroxidase isozyme existed in populations of Q. variabilis. Genetic variations mostly arose within the population. The innerpopulation genetic variations account for 95.3% of the total genetic variations and the interpopulation genetic variations account for 4.7%.

Genetic Variability

Quercus variabilis

Natural population growth

Population Genetics

Source

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Tissue Culture of Superior Eucommia Clone

Gong Bi NW Sci

Different explants from superior Eucommia clone No.2 were cultured to regenerate the mother plant rapidly by clone. The result are as follows: MS+6 BA 1.0 +NAA 0.2 +sucrose 4% was the optimum axillary sprout inducing medium, on which 82.5% axillary buds shot, apex sprout inducing medium: MS+6 BA 1.0 , on which 87.5% stem apex shot; plantlet growth medium: MS+IAA 1.0 +6 BA 1.0 ; rooting medium: 1/2MS+GA 0.5 +sucrose 6%, rooting rate arrived 20.7%.

Apex (geometry)

clone (Java method)

Plantlet

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Effects of Natural Brassinolide on Germination and Hypocotyl Elongation of Caragana Microphylla and Amopha Fruticosa Seeds

Li K NW Sci

The germination capacity of the seeds were obviously promoted after Caragana microphylla seeds were soaked with different concentrations of natural brassinolide. The germination rate and capacity of the seeds was increased by 23.2% and 20.7% after using 0.05mg/L natural brassinolide treatment, and mean germination days of the seeds was cut down by 0. 8 day after seeds were treated with 0. Img/L natural brassinolide, compared with the control. After Amopha fruticosa seeds were treated with 0. 2mg/L natural brassinolide, the germination rate and capacity of the seeds were increased by 11.4% and 22. 7% respectively, and the mean germination day of the seeds was cut down by 0. 8 day, compared with the control. After hypocotyls of Caragana microphylla and Amopha.fruticosa were treated by using the natural brassinolide, the elongation of their hypocotyls were obviously increased. Treatment with 0.1mg/L natural brassinolide was the most suitable for the elongation of Caragana microphylla hypocotyls and 0. 2mg/L was the best for the elongation of Amopha fruticosa hypocotyls.

Brassinolide

Elongation

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A Study on the Extraction Methods of Flavonoids in the Leaves of Toona sinensis

Xibei Linxueyuan xuebao (2002)

Li Xiu NW Sci

Different methods have been tested in the extraction of flavonoids in Toona sinensis leaves. Throungh comparing the contents of flavonoides, the best extraction method has been discussed. In addition, using 70% alcohol as solvent, the contents of flavonoids in the Toona sinensis leaves at different growth ages have been measured.

Source

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Study on the Processing Technology of Blackberry Dry Wine

Huaide Xu NW Sci

The effect on blackberry dry wine fennentation of yeast kinds, activation means, fermentation tempertau-re and methods was studied. The results indicated that under the condition of selecting yeast of F10, using original juice to activate yeast, and adopting clear juice to fermentate in 23℃, not only the fermentation speed was fast,but also the wine was clear,and it had fine wine fragrant, taste good. In addition, the wine quality was up to national standard.

Fruit wine

Fermentation in winemaking

Aging of wine

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