Using multispectral imagery to estimate tornado-induced tree fall patterns identified via UAS

When tornadoes hit wooded areas, analyzing the frequency of tree falls is a valuable tool in estimating tornado wind patterns and intensity. Often, tree falls are identified using imagery obtained via unpiloted aerial systems (UAS). However, this requires having the resources to obtain this imagery of the damaged region, which is not always possible. Additionally, digitizing thousands of tree falls is a very time-intensive process. One alternative is to use high resolution (\u3c5 \u3em) multispectral satellite imagery to estimate where tree falls occurred. This study compares spectral indices from Planet satellite imagery to tree falls manually digitized from imagery obtained via UAS at a location in Jacksonville, Alabama, that was hit by an Enhanced Fujita (EF)-3 tornado on 19 March 2018. Using this satellite imagery, we examine changes in indices such as Normalized Difference Vegetation Index (NDVI) and Enhanced Vegetation Index (EVI) at locations of tree falls digitized on the UAS imagery. The long-term goal is to inform future researchers on how to accurately estimate tree falls without the need to obtain UAS imagery

Data reduction formulas for the 16-foot transonic tunnel: NASA Langley Research Center, revision 2

The equations used by the 16-Foot Transonic Wind Tunnel in the data reduction programs are presented in nine modules. Each module consists of equations necessary to achieve a specific purpose. These modules are categorized in the following groups: (1) tunnel parameters; (2) jet exhaust measurements; (3) skin friction drag; (4) balance loads and model attitudes calculations; (5) internal drag (or exit-flow distribution); (6) pressure coefficients and integrated forces; (7) thrust removal options; (8) turboprop options; and (9) inlet distortion

Computations for the 16-foot transonic tunnel, NASA, Langley Research Center, revision 1

The equations used by the 16 foot transonic tunnel in the data reduction programs are presented in eight modules. Each module consists of equations necessary to achieve a specific purpose. These modules are categorized in the following groups: tunnel parameters; jet exhaust measurements; skin friction drag; balance loads and model attitudes calculations; internal drag (or exit-flow distributions); pressure coefficients and integrated forces; thrust removal options; and turboprop options. This document is a companion document to NASA TM-83186, A User's Guide to the Langley 16 Foot Transonic Tunnel, August 1981

Effect of silicic acid and other silicon compounds on fungal growth in oligotrophic and nutrient-rich media

Mycelium grew from a spore-mycelial inoculum of Aspergillus oryzae added to ultra-pure water (upw) containing silicon compounds, but did not grow in upw alone. Growth of other fungi also occurred in upw only when silicon compounds were added. Increased growth of A. oryzae, and other fungi, also followed the addition of silicic acid and other silicon compounds to Czapek Dox. Aspergillus oryzae solubilized silicon compounds in both upw and nutrient-rich media. Although interactions between microorganisms and silicon have been generally neglected, the results show that silicon compounds can increase fungal growth under both oligotrophic and nutrient-rich conditions

Chlamydia pneumoniae and cardiovascular disease.

Chlamydia pneumoniae is a ubiquitous pathogen that causes acute respiratory disease. The spectrum of C. pneumoniae infection has been extended to atherosclerosis and its clinical manifestations. Seroepidemiologic studies have associated C. pneumoniae antibody with coronary artery disease, myocardial infarction, carotid artery disease, and cerebrovascular disease. The association of C. pneumoniae with atherosclerosis is corroborated by the presence of the organism in atherosclerotic lesions throughout the arterial tree and the near absence of the organism in healthy arterial tissue. C. pneumoniae has also been isolated from coronary and carotid atheromatous plaques. To determine whether chronic infection plays a role in initiation or progression of disease, intervention studies in humans have been initiated, and animal models of C. pneumoniae infection have been developed. This review summarizes the evidence for the association and potential role of C. pneumoniae in cardiovascular disease

Emergency Budget 2015: mixed messages for working aged disabled people

Ahead of the Conservative Government’s first Budget today, disabled people are experiencing mixed messages about what to expect from their future support, writes Rose Grayston

Effect of an Eight-Week Water Aerobics Program on Selected Physiological Measurements of Female Participants

Higher EducationHealth, Physical Education and Recreatio