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Stress in the workplace is not new. But many signs are pointing to the fact that it is a greater threat than ever before. While process improvement strategies, technology, and continued learning have made some things easier, they have also added to the anxieties of business life through information overload, heightened pressure for productivity, and a strong sense of job insecurity.  相似文献   

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Is boron nutritionally relevant?   总被引:1,自引:0,他引:1  
Evidence from numerous laboratories using a variety of experimental models, including humans, shows that boron is a bioactive beneficial element. Much evidence has come from studies that did not require nutritional or environmental stressors or fastidious methods in diet preparation or environmental control. The evidence includes deprivation studies showing that boron is necessary for some higher animals to complete the life cycle, and that realistic low boron intakes result in impaired bone health, brain function, and immune response. Thus, low boron intake is a relevant nutritional concern, which diets rich in fruits, vegetables, nuts, and pulses can prevent.  相似文献   

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