Allee effects and pulsed invasion by the gypsy moth

Article Abstract:

A theoretical model with parameter values estimated from long-term monitoring data was used to show how an interaction between strong Allee effects and stratified diffusion could explain the invasion pulses. Sensitivity analyses show that the prediction of periodic invasion pulses is robust against moderate variation in the model parameters indicating that first- and second-order density dependence, the magnitude of environmental stochasticity, or the presence/absence of population cycles has no qualitative effects on the prediction.

North America, Physiological aspects, Genetic aspects, Biological invasions, Gypsy moth, Gypsy moths

---

The lab that asked the wrong questions

Article Abstract:

The Princeton Engineering Anomalies Research (PEAR) laboratory in New Jersey, which investigated whether people can alter the behavior of machines using their thoughts, was shut down after 28 years since its inception in 1979. The closure highlights the question of the extent that science should be permitted for research that does not fit a standard theoretical framework, if the methods used are scientific.

Plant shutdown, New Jersey, Facility closures, Engineering laboratories

---

Total synthesis of marine natural products without using protecting groups

Article Abstract:

The preparative-scale, enantioselective, total syntheses of members of the hapalindole, fischerindole, welwitindollnone and ambiguine families constructed without the need for protecting groups is described. It is found that the enantioselective total syntheses require only seven steps from commercially available materials and could easily be performed on a preparative scale using inexpensive reagents.

Organic compounds, Organic compound synthesis, Structure, Chemical properties, Alkaloids

Similar abstracts:

• Abstracts: Controlled exchange interaction between pairs of neutral atoms in an optical lattice. Temperature-induced valence transition and associated lattice collapse in samarium fulleride
• Abstracts: Automated real-time immunoassay of biomolecules. Total synthesis of the potential anticancer vaccine KH-1 adenocarcinoma antigen
• Abstracts: Associative learning by locusts: pairing of visual cues with consumption of protein and carbohydrate. Nutritional imbalance in an extreme generalist omnivore: tolerance and recovery through complementary food selection
• Abstracts: Induction of an illusionary shadow person. Exploitation of structural and regulatory diversity in glutamate racemases
• Abstracts: The ends of an era. Joint actions may hold the vital formula. A global call to arms

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.