Alkannin is the main coloring matter of Alkanet, a natural red dye extracted from root Alkanna tinctoria L. Shikonin, optical isomer alkannin, Lithospermum erythrorhizon. As both dyes are only slightly soluble in water, application ordinary Raman spectroscopy limited. Thus, Surface-enhanced (SERS) can be successfully applied to study solutions. Solid alkannin and shikonin were characterized by ...

We discuss a famous problem about right triangles with rational side lengths. This elementarysounding problem is still not completely solved; the last remaining step involves the Birch and Swinnerton-Dyer conjecture, which is one of the most important open problems in number theory (right up there with the Riemann hypothesis). 6.

Coreopsis tinctoria Nutt. ( C. ) is used in composite tea material and has important medicinal functions. Soil salinization affects the growth development of Xinjiang (China). Here, we discussed changes photosynthesis physiological characteristics seedlings treated with different concentrations NaCl [0 (CK), 50, 100, 150, 200, 250 mmol·L −1 ] for 12, 24, 72 hours. The results showed that net ph...

We refine the techniques of our previous paper [KM1] to prove that the average order of vanishing of L-functions of primitive automorphic forms of weight 2 and prime level q satisfies ∑ f∈S2(q)∗ ords= 1 2 L(f, s) ≤ C|S2(q) ∗| with C = 6.5, for all q large enough. On the Birch and Swinnerton-Dyer conjecture, this implies rank J0(q) ≤ C dim J0(q) for q prime large enough.

Using Coreopsis tinctoria liquid cultures of Agrobacterium rhizogenes transformed roots (socalled “hairy roots”) and non-transformed roots have been established. The production of differ­ ent phenylpropanoid compounds by these cultures grown in light or darkness, respectively, was compared. Whereas the composition of phenylpropanoids in the root cultures was not influenced by the culture condit...

Abstract Indigofera tinctoria natural dye extraction waste has not been utilized become environmental pollution can encourage climate change. Climate change causes land degradation and decreased crop productivity. Management of the into organic fertilizer used in plant cultivation need to mitigate This study aimed examine role from obtaining optimum dose supporting growth . The a Randomized Com...

The available guides in chemical kinetic’s learning only explain the adsorption equation, do not type of and practical guide is related to value local wisdom. Therefore, it necessary have a on concept isotherm based purpose this study was determine feasibility laboratory work’s student responses. This research employs development (R D) using ADDIE’s model. subject lab for plant-based topic Indi...