Studies on Natural Substances from Marine Algae: 1. Studies on Synthesis & Biological Activities of Natural Antioxidant-Martefragin A Derivatives from Alga 2. Studies on Preparation & Detection of Paralytic Shellfish Toxins-Gonyautoxins
It is indicated that the reconstituted Cu_2 Zn_2-SOD has the same enzyme activity as that of native Cu_2 Zn_2-SOD, by the determination of activity and analysis of spectral behaviours on Cu_2Zn_2-SOD, Cu_2 Co_2-SOD and E_2E_2-SOD.
METHODS: To prepare three affinity chromatography columns, antisense peptides were immobilized, called RT1-sepharose 4B, RT2-sepharose 4B and RT3-sepharose 4B, respectively and investigate the retardative behavior for each of native peptide TR1, TR2 or TR3 on above columns with stepwise elution.
P4(U4) with the native disulfide A20-B19; P1(U1), P2(U2) and P3(U3) with two disulfide bonds which include A20-B19. A schematic flow chart of major oxidative folding and reductive unfolding pathway of AILP was proposed.
1. Study on the Cycloaddition Reaction about Substituted N-benzylaniline with THF 2. Study on the Total Synthesis of the Natural Product Martenellic Acid
We develop methods that give rise to natural monomial bases for such rings over their ground fields and explicitly determine precisely which monomials are zero in the ring of coinvariants.
For each compact Lie algebra g and each real representationV of g we construct a two-step nilpotent Lie groupN(g, V), endowed with a natural left-invariant riemannian metric.
Foliar litters of 10 native dominant tree species have been collected respectively from the two sites and divided into single-species litter and mixed litter.
The results showed that the tested poplar can be classified into five groups, and indicated the clear separation of varieties of different sections of poplar and the primary distinction between native and exotic poplar varieties.
The soil microbial biomass and nutrient status under the native broadleaved forest and Cunninghamia lanceolata plantations at the Huitong National Research Station of Forest Ecosystem (in Hunan Province, midland of China) were examined in this study.
We use a different approach which allows to establish that the one-sided Sawyer Ap weights are the natural ones to study the boundedness and convergence of that series in weighted spaces.
We prove the natural Fefferman-Stein weak type inequality for the strong maximal function in the plane, under the assumption that the weight satisfies a strong Muckenhoupt condition.
Isolation of the natural products from the stems of Jatropha maheshwarii yielded 5 compounds such as Friedelin (0.16%), epi-friedelinol (0.12%), n-octacosanol (0.11%), β-sitosterol (0.2%), and β-sitosterol-3-β-D-glucopyranoside (0.24%).
The effects of Glomus mosseae colonization on the plant growth and drought tolerance of 1-year-old trifoliate Poncirus trifoliata seedlings in potted culture were studied in natural water stress and rewatering conditions.
Based on the fundamental processes of birth, death, dispersal and speciation, the neutral theory provided the first mechanistic explanation of species abundance distribution commonly observed in natural communities.
天然
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