Alternative complement pathway: activity levels in allogeneic pregnancy.

Classical and alternative complement pathway activities have been evaluated in sera of women in progressive stages of gestation and in pregnant mice belonging to outbred or inbred matings, as compared to suitable controls. While classical C pathway was found to be unmodified, the alternative one attained in pregnancy significantly higher activity levels. Results are discussed in the light of mother-conceptus relationships.     

Alternative complement pathway: Activity levels in allogeneic pregnancy

Summary Classical and alternative complement pathway activities have been evaluated in sera of women in progressive stages of gestation and in pregnant mice belonging to outbred or inbred matings, as compared to suitable controls. While classical C pathway was found to be unmodified, the alternative one attained in pregnancy significantly higher activity levels. Results are discussed in the light of mother-conceptus relationships.     

Engineering Systems Thinking: A Multifunctional Definition

This paper asks what engineering systems thinking is and seeks to determine what distinguishes it from systems thinking. The purpose of the study was to identify the characteristics of engineers who are able to think in the manner we call engineering systems thinking. The study seeks to define the term engineering systems thinking on a theoretical level and then to move from the theoretical level to the operational level. A thorough understanding of engineering systems thinking on both the theoretical and operational levels will prove useful in the design of curricula to improve and develop thinking of this sort. Our study was based on 28 interviews, 14 lectures, and 2 observation sites. This paper treats only the material that pertains directly to engineering systems thinking.