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发表于 2025-3-25 03:39:39 | 显示全部楼层
Jack A. Naglieri,Paul A. LeBuffe,Valerie B. Shapiromultiple integral, according to the type of functions, yields an extremum; i.e., assumes a maximal or minimal value. Many problems of theoretical physics, engineering, and geometry lead to such problems.
发表于 2025-3-25 09:46:29 | 显示全部楼层
The Surfactant System of the Lungs first postulated on theoretical grounds by . N. (1929), but it was not actually demonstrated until some 30 years later when P. (1955) found that remarkably stable bubbles were expressed from a lung cut under water and C. (1957) showed that lung extracts lowered surface tension at an air-water interface.
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Jens Kristian Larsenning of artistic creativity. A major motive for doing the drawings was probably to exercise some type of control over the animals, diffuse fears, or to engage in some type of quasi-religious relationship. Whatever the motives, the practice of drawing, coloring, and surveying has continued and develo
发表于 2025-3-26 05:36:12 | 显示全部楼层
Beata Walczak,MichaŁ Daszykowski,Ivana Stanimirovamajor step forward in the elucidation of the biosynthetic pathway, and its regulation, of this plant growth regulator, While ACC-synthase (3,4) appears to control the rate-limiting step in ethylene synthesis in many cases (5,6), an additional control at the conversion of ACC to ethylene has also bee
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