Research on the basic theory and design principles of fire resistance, wind resistance and earthquake resistance in civil engineering and landslides, protective measures and prediction technology.

研究土木工程中的防火、防风、防震、滑坡等的基本原理，设计原理，防护措施及预测、预报技术。

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According to protective principle, laser protective materials can be divided into the materials using liner optical theory and the material using nonlinear optical theory.

按照防护原理，可将激光防护材料分为基于线性光学理论的防护材料和基于非线性光学理论的防护材料。

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Based on the theory of protective engineering and blasting, the damage effects of primary fragments, shock wave and vibration in destruction of bygone aero-bomb and shell are discussed.

分别根据工程防护和工程爆破理论，对航、炮弹销毁时的弹片、冲击波和振动等安全距离计算进行了对比研究，有关研究结论可供销毁废旧航、炮弹的环境安全评估参考。

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Schenk also dismissed the theory from Case Western Reserve Researcher Mark Smith that amyloid is protective and involved in wound healing.

FORBES: Elan Defends Alzheimer's Science

One theory is that sensitivity to bitter flavor could have evolved as a protective mechanism against poisonous plants.

WSJ: People Who Taste Too Much