Environment stress

In concert with the stress environment (stress corrosion cracking, corrosion fatigue)... 

Intergranular corrosion (weld decay) and stress corrosion cracking are problems associated with the use of stainless steels, and must be considered when selecting types suitable for use in a particular environment. Stress corrosion cracking in stainless steels can be caused by a few ppm of chloride ions (see Section 7.4.5). 

A.S. Maxwell, NPL Environment Stress Cracking Database, National Physical Laboratory, 1998. 

Levitt, J. 1980. Responses of Plants to Environment Stresses. Second Edition. New York Academic Press. 

Turnbull A, Maxwell AS, Pillai S (2000) Comparative assessment of slow strain rate, 4-pt bend and constant load test methods for measuring environment stress cracking of polymers. Polym Test 19(2) 117—129... 

Maxwell AS, Turnbull A (2004) Influence of small fluctuating loads on environment stress cracking of polymers. Polym Test 23(4) 419-422... 

Most therapeutic interventions function primarily to prevent the formation of new acne lesions and have minimal impact on existing lesions. Among the factors that may affect acne are genetics, climate, diet, environment, stress, and physical activity. 

Environment—Stressful situations, such as a difficult job, trouble at school, or relationship problems can all lead to clinical depression. Bereavement or a serious illness such as cancer can also cause depression. 

Smith, M. J., and Carayon, P. (1990), Demands of the Work Environment Stress and CVD Implications, working paper, University of Wisconsin-Madison, Department of Industrial Engineering. 

The molecular mass of a polymer incr ses during crosslinking and this is directly interrelated with the change of properties polymer connected with the sample deformability. The crosslinking leads to an increase of viscosity of the polymer melt, increase of the tensile strength [154], improvement of creep properties [155, 15Q, increase of the resistance against environment stress cracking [157], etc. 

Strength tests. The strength was measured in uniaxial tension in an inert environment (stress rate 1 MPa/s). The surface area of the gage section of the tensile specimen was 600 mm. ... 

Studies of the effects of stress on photosynthesis are usually undertaken to increase our understanding the interaction between photosynthesis and the vagaries of the environment. Stress was viewed as reducing the plant s capacity to attain its genetic potential. It was common to hear that the lesion in photosynthesis caused by a particular stress was sought so that we could engineer or somehow manipulate the plant to overcome the stress effect. 

This chapter presents an overview of properties and performance of polymer blends, focusing on these aspects that are outside the main domain of the other chapters in this handbook. Such properties as mechanical, chemical, and solvent effects and thermal, flame retardancy, electrical, and optical properties are discussed. Further, the developments in sound transmission, certain special test methods in aroma barrier, permeability test for hquids, and environment stress cracking are included in the second edition of this handbook. In addition, the data is updated and upgraded. And, finally, the relevant and useful websites for additional information are also provided towards the end of this chapter. 

This method is being accepted throughout Europe as the standard method to test PE pipe grade materials that exhibit very high environment stress crack resistance (ESCR) values. The FNCT test has been preferred in Europe, as it leads to shorter failure times, due to its particular specimen design and to the presence of a surface-active environment. 

A patent on reactor-blended thermoplastic olefinic elastomer, R-TPO, was disclosed. Thus, PE was polymerized in the presence of an active catalyst and an already polymerized olefinic copolymer (e.g., ethylene-co-1-butene) or the sequence was reversed. The blend had superior resistance to environment stress cracking, and the blown film showed few fish eyes... 

---