Continuation Study of the Response of Subterranean Termites (Coptotermes formosanus )to Organosilane Treated Wood Wafers (Isoptera: Rhinotermitidae)

A standard laboratory termite test was conducted in May of 2012 using termites from a single colony of Coptotermes formosanus (Shiraki) gathered in South Central Mississippi. Testing was performed adhering to procedures outlined in the AWPA E1-09 Standard termite test. Wood wafers used in the test were treated with an organosilane compound that has been shown to cause color changes and erratic behavior in native termite species ( Johnson & others 2011). Significant results were obtained on the weight loss of treated wafers as well as termite mortality. Observations of worker termites exposed to treated wood wafers during testing did not reveal any abnormal termite activity, and no significant post mortem observations were made, as were made with Reticulitermes sp. It is hypothesized that the pathogenic response of the gut bacteria Serratia marcescens (Bizio) in Reticulitermes sp.to the organosilane compound was not observed in C. formosanus due to a higher resistance to immuno threats

Are any oral iron formulations better tolerated than ferrous sulfate?

Ferrous salt preparations (ferrous sulfate, ferrous gluconate, and ferrous fumarate) are equally tolerable. (Grade of recommendation: A, based on randomized controlled trial.) Controlled-release iron preparations cause less nausea and epigastric pain than conventional ferrous sulfate (grade of recommendation: A, based on randomized controlled trials), although the discontinuation rates between the 2 iron formulations were similar. Ferrous sulfate remains the standard first-line treatment of iron-deficiency anemia given its general tolerability, effectiveness, and low cost

Elementary (Grades 2-6) Long-Term English Language Learners: Factors Related to Acquisition of English

This study presents findings from one high needs school district of the factors that were predictors of long-term elementary (grades 2-6) English language learners (ELLs) progress in English. Data included 1,031 elementary Spanish-speaking students who were continuously enrolled greater than 2.5 years in the district’s language support programs. Regression analysis revealed that Pre-LAS-O English and Spanish total scores contributed significantly (4.2%) to the prediction of current English level. For students taking the LAS-O at entry, variables of entry age of student, English and Spanish total scores were not statistically significant in helping understand current English level. Findings and implications for teachers, district-level data collection, and language policy with respect to NCLB mandates are discussed for those students left behind

Dual Enrollment: Measuring Factors for Rural High School Student Participation

The purpose of this study was to explore the reasons 162 rural area high school students participate in the dual enrollment program. Dual enrollment programs allow high school students to enroll in college courses for credit prior to high school graduation with local school districts covering the cost of tuition. Participants in this study were recruited from two rural agricultural counties from Washington State attending a local college. Exploratory factor analysis revealed that dual enrollment participation was related to academics, financial, social, and choice reasons. Results showed no significant differences between 11th and 12th grade participants regarding financial and choice reasons to participate. However, statistically significant differences were found regarding academic and social reasons for participation. Implications for rural educators and recommendations for future research regarding dual enrollment programs are discussed

The New Economics of Livestock Production Management

The importance of heterogeneity of animal attributes in livestock production is assessed. Preliminary results indicate that variance and skew measures of attributes may be becoming more important over time.livestock economics, herd management, livestock marketing, Livestock Production/Industries, Marketing,

ORIENTATION BY BULK MESSENGER SENSORS IN AQUATIC VERTEBRATES

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/72353/1/j.1749-6632.1969.tb13050.x.pd

Using electronic surveys: advice from survey professionals

The study reports the perceptions and recommendations of sixty-two experienced survey researchers from the American Educational Research Association regarding the use of electronic surveys. The most positive aspects cited for the use of electronic surveys were reduction of costs (i.e., postage, phone charges), the use of electronic mail for pre-notification or follow-up purposes, and the compatibility of data with existing software programs. These professionals expressed limitations in using electronic surveys pertaining to the limited sampling frame as well as issues of confidentiality, privacy, and the credibility of the sample. They advised that electronic surveys designed with the varied technological background and capabilities of the respondent in mind, follow sound principles of survey construction, and be administered to pre-notified, targeted populations with published email addresses. Accessed 73,957 times on https://pareonline.net from January 02, 2002 to December 31, 2019. For downloads from January 1, 2020 forward, please click on the PlumX Metrics link to the right

Flight-Deck Interval Management in Near-Term Arrival Operations

A simulation investigated NASA Air Traffic Management Technology Demonstration 1 (ATD-1) procedures and prototype technologies, including the Traffic Management Advisor for Terminal Metering, Controller-Managed Spacing tools, and Flight Deck Interval Management (FIM) equipment. The ATD-1 procedures and technologies comprise an integrated solution for managing high-density arrivals that NASA is developing and transferring to government and industry stakeholders for NextGen. During each of eighteen simulation trials, experienced controllers managed approximately two hundred departures and over-flights together with seventy-five arrivals to Phoenix Sky Harbor International Airport in a realistic near-term environment. Eight of the arrivals were desktop-based flight simulators flown by airline pilots, which were equipped with prototype FIM equipment in two-thirds of the trials. The simulation provided system-level measures of performance of the ATD-1 integrated arrival solution, demonstrating high conformance with Performance-Based Navigation procedures and a low rate of FIM interruptions. FIM operations provided benefits under specific conditions when FIM aircraft flew connected routes to the runway. This paper focuses on the integration of FIM with the ATD-1 ground-based technologies, discusses outstanding issues, and describes avenues for further research

Simulation of alnico coercivity

Micromagnetic simulations of alnico show substantial deviations from Stoner-Wohlfarth behavior due to the unique size and spatial distribution of the rod-like Fe-Co phase formed during spinodal decomposition in an external magnetic field. The maximum coercivity is limited by single-rod effects, especially deviations from ellipsoidal shape, and by interactions between the rods. Both the exchange interaction between connected rods and magnetostatic interaction between rods are considered, and the results of our calculations show good agreement with recent experiments. Unlike systems dominated by magnetocrystalline anisotropy, coercivity in alnico is highly dependent on size, shape, and geometric distribution of the Fe-Co phase, all factors that can be tuned with appropriate chemistry and thermal-magnetic annealing