University of Nebraska–Lincoln

About: University of Nebraska–Lincoln is a education organization based out in Lincoln, Nebraska, United States. It is known for research contribution in the topics: Population & Poison control. The organization has 28059 authors who have published 61544 publications receiving 2139104 citations. The organization is also known as: Nebraska & UNL.

Factors affecting the determination of threshold doses for allergenic foods: how much is too much?

Abstract: Background: Ingestion of small amounts of an offending food can elicit adverse reactions in individuals with IgE-mediated food allergies The threshold dose for provocation of such reactions is often considered to be zero However, because of various practical limitations in food production and processing, foods may occasionally contain trace residues of the offending food Are these very low, residual quantities hazardous to allergic consumers? How much of the offending food is too much? Very little quantitative information exists to allow any risk assessments to be conducted by the food industry Objective: We sought to determine whether the quality and quantity of existing clinical data on threshold doses for commonly allergenic foods were sufficient to allow consensus to be reached on establishment of threshold doses for specific foods Methods: In September 1999, 12 clinical allergists and other interested parties were invited to participate in a roundtable conference to share existing data on threshold doses and to discuss clinical approaches that would allow the acquisition of that information Results: Considerable data were identified in clinical files relating to the threshold doses for peanut, cows' milk, and egg; limited data were available for other foods, such as fish and mustard Conclusions: Because these data were often obtained by means of different protocols, the estimation of a threshold dose was very difficult Development of a standardized protocol for clinical experiments to allow determination of the threshold dose is needed (J Allergy Clin Immunol 2002;109:24-30)

Evidence of hollow golden cages

Abstract: The fullerenes are the first “free-standing” elemental hollow cages identified by spectroscopy experiments and synthesized in the bulk. Here, we report experimental and theoretical evidence of hollow cages consisting of pure metal atoms, Aun− (n = 16–18); to our knowledge, free-standing metal hollow cages have not been previously detected in the laboratory. These hollow golden cages (“bucky gold”) have an average diameter >5.5 A, which can easily accommodate one guest atom inside.

Students' Persistence in a Distributed Doctoral Program in Educational Leadership in Higher Education: A Mixed Methods Study.

Abstract: The purpose of this mixed methods sequential explanatory study was to identify factors contributing to students’ persistence in the University of Nebraska-Lincoln Distributed Doctoral Program in Educational Leadership in Higher Education by obtaining quantitative results from surveying 278 current and former students and then following up with four purposefully selected typical respondents to explore those results in more depth. In the first, quantitative, phase, five external and internal to the program factors were found to be predictors to students’ persistence in the program: “program”, “online learning environment”, “student support services”, “faculty”, and “self-motivation”. In the qualitative follow up multiple case study analysis four major themes emerged: (1) quality of academic experiences; (2) online learning environment; (3) support and assistance; and (4) student self-motivation. The quantitative and qualitative findings from the two phases of the study are discussed with reference to prior research. Implications and recommendations for policy makers are provided.