Nicholls State University

About: Nicholls State University is a education organization based out in Thibodaux, Louisiana, United States. It is known for research contribution in the topics: Population & The Internet. The organization has 456 authors who have published 795 publications receiving 20031 citations.

Wetlands recreation: Louisiana style

Abstract: Unlike other US coastal states, Louisiana’s coastal zone is not rimmed by attractive beaches, cliffs or bluffs. More than 3.2 million ha of marsh and intermingled water surfaces dominate the landscape. Forty-one percent of The United States’ coastal marshes and 25% of the country’s wetlands are in Louisiana. It is one of the world’s largest and most biologically productive wetlands. This biological resource is a bonanza of aquatic and avian wildlife (Figure 1). As an outdoor resource, the aquatic lowlands serve as a focal point for family-oriented activity.

Aqueous Equilibria: Acids, Bases, and Solubility. A General Chemistry Laboratory Experiment

Abstract: We refer to two major types of general chemistry freshman laboratory experiments: discovery and cookbook. The typical Freshman enrolled in general chemistry has the skills to perform an experiment that is somewhere between cookbook and discovery, and we have developed a laboratory experiment that is midway between these extremes. This experiment aids the student’s understanding of the concept of aqueous equilibria. In this experiment, students are asked to prepare and measure the pH of a variety of acidic and basic solutions. Students are also asked to calculate pH values from literature dissociation constants and dissociation constants from their experimental pH values. This experiment demonstrates the relationships between dissociation constants, percent ionization, pH and strength of acids and bases, as well as molar solubility and the solubility product constant, Ksp. A Mathcad-based prelaboratory activity provides a review of the concepts and engages students in what-if explorations.

Molecular calculations for HeH+ with two-center correlated orbitals

Abstract: A two-center correlated orbital approach was used to calculate the electronic ground state energy for the HeH+ molecular ion. The wavefunctions were constructed from the exact solution of the Schrodinger equation for the HeH++ problem in prolate-spheroidal coordinates taken together with a Hylleraas type correlation factor. With a simple single term wavefunction, we obtained ground state energy of −2.95308691 hartree without any variational parameters in the calculation. When a two-configuration-state wavefunction was used and effective charges were allowed to be adjusted, we found an energy of −2.97384868 hartree, which is to be compared with −2.97869074 hartree obtained by an 83 term configuration interaction wavefunction or −2.97364338 hartree by an ab initio calculation (at the MP4(SDQ)/6-311++G(3df, 3dp) level) using the well-known “canned” code.

Correction to: Geographic variation in thermal tolerance and morphology in a fiddler crab sister-species pair

Abstract: In the original published article, the separators between numerator and denominator degrees of freedom in Tables 2 and 3 were excluded. The corrected Tables 2 and 3 are as follows.