Wax precipitation is one of the most challenging flow assurance problems because its ability to create restrictions inside wellbores, pipelines, and some production facilities. Inaccuracy in predictions wax appearance temperature (WAT) amount precipitated makes it necessary reassess existing thermodynamic models. In addition, current models require accurate description composition from expensiv...

In eastern North America, annual precipitation increased by >40% over the Holocene, largely in response to melting of Laurentide Ice Sheet. The change substantially raised lake levels and transformed conifer-dominated ecosystems into mesic deciduous forests. δ2H values terrestrially derived leaf-wax n-alkanes can facilitate diagnoses climate dynamics involved reconstructing mean (δ2HMAP). Howev...

Deposition of wax on a cold surface is a serious problem in oil production. Progress in developing more effective wax inhibitors has been impeded by the lack of an established mechanism connecting the molecular structure to inhibitor efficiency. Some comb-like polymers having long alkyl side chains are known to decrease the rate of wax formation. Among several possible mechanisms, we investigat...

  Background and Objective: Formalin-fixed paraffin-embedded tissues are a valuable source of DNA for molecular studies. We designed and optimized an efficient procedure for DNA extraction from formalin-fixed paraffin embedded tissues. Materials and Methods: Seventy three blocks of cervical paraffin-embedded tissues were investigated. DNA was extracted using 45 minutes boiling in alkaline sol...

Cuticular wax deposition and composition affects drought tolerance and yield in plants. We examined the relationship between wax and dehydration stress by characterizing the leaf cuticular wax of tree tobacco (Nicotiana glauca L. Graham) grown under periodic dehydration stress. Total leaf cuticular wax load increased after each of three periods of dehydration stress using a CH2Cl2 extraction pr...