822 research outputs found
Buried Hope: Assessing The Future Of Carbon Sequestration In the U.S. Under The Updated 45Q Tax Credit
The urgent need to combat climate change has prompted governments world-wide to explore innovative policy measures to reduce greenhouse gas emissions. One such measure is the process of carbon capture and sequestration in which carbon dioxide is captured either directly from the atmosphere or prior to its release. This article will analyze updates to the 45Q tax credit passed in the Inflation Reduction Act of 2022, in which Congress increased tax incentives for industries that use carbon capture technology. This analysis will explain carbon capture technology, survey use of the technology, and discuss the viability of the latest updates to the 45Q tax credit. Ultimately, this article predicts that the changes will not produce any meaningful adoption of traditional carbon capture technology in its current form. Without more efficient technology, increased economic incentives will not motivate industries to begin capturing and storing their carbon dioxide. However, changes to the 45Q credit alongside government investment will likely drive down the costs of direct air capture sequestration and could create a profitable market for carbon captured directly from the air
Embouchure Theory in Practice
In the instrumental band world, the horn, euphonium, and tuba are considered “switch-over” instruments. They are put in this category because students usually switch to these instruments from their starting instrument. Though they may not be offered to students as a starting instrument, their tones create a balanced and mature band sound. However, it is difficult to properly teach these instruments due to logistical complications; the music educator is responsible for simultaneously teaching the switch-over students a new instrument, while continuing the education of students who did not switch over.
Sound on the horn, euphonium, and tuba is produced by moving air between the lips to cause them to vibrate. The way the mouth is shaped to direct this air column is called an embouchure. Due to a lack of time, music educators must use efficient and effective approaches when teaching embouchures. A comparison of written to practiced strategies for teaching a beginning embouchure tests the effectiveness and efficiency of the approach. The purpose of this project is to compile a variety of successful approaches to teaching embouchure by comparing methods illustrated in literature to approaches that are practiced by professionals and considered successful
A correlative study of the anti-literal in modern art, music, and literature
This study is concerned with the understanding as a way to enjoyment of the anti-literal in modern art.1 The work of art is regarded as the locus of various cultural factors--a live product of the vital energies of its age and itself a source as well as a reflection. The analysis of these cultural factors lays no claim to completeness. It seeks merely to indicate in simple language the layman can understand, conditions, forces, and stimuli in the artist\u27s milieu which are potential motivations of his artistic idiom2 and through the examination of those influential factors, to try to discover why the artist chose the anti-literal idoms
Is It Evolution Yet? A Critique of Evolutionary Archaeology
The application of Darwinian evolutionary theory to archaeology has taken two divergent and rather distinct paths over the past two decades. According to one program, often referred to as evolutionary archaeology, cultural change as seen in the archaeological record can best be explained in terms of the direct action of natural selection and other Darwinian processes on heritable variation in artifacts and behavior. The other approach, referred to as evolutionary or behavioral ecology, explains cultural and behavioral change as forms of phenotypic adaptation to varying social and ecological conditions, using the assumption that natural selection has designed organisms to respond to local conditions in; fitness-enhancing ways. We argue that the primary conflict between the two approaches centers on fundamental differences in the way they view the explanatory role of phenotypic variation and more specifically a disagreement over whether behavioral innovation is random with respect to adaptive value (including related issues of current versus future selective advantage and the- explanatory role of intentions). These differences lead to contrasts in explanatory scope, empirical application, and theoretical conclusions, which in turn provide the basis for our evaluation of the relative utility of each approach for explaining archaeological phenomena
Wealth transmission and inequality among hunter-gatherers
Journal ArticleWe report quantitative estimates of intergenerational transmission and population-wide inequality for wealth measures in a set of hunter-gatherer populations. Wealth is defined broadly as factors that contribute to individual or household well-being, ranging from embodied forms, such as weight and hunting success, to material forms, such as household goods, as well as relational wealth in exchange partners. Intergenerational wealth transmission is low to moderate in these populations but is still expected to have measurable influence on an individual's life chances. Wealth inequality (measured with Gini coefficients) is moderate for most wealth types, matching what qualitative ethnographic research has generally indicated (if not the stereotype of hunter-gatherers as extreme egalitarians). We discuss some plausible mechanisms for these patterns and suggest ways in which future research could resolve questions about the role of wealth in hunter-gatherer social and economic life
Comparison of the Performance of Two Different ALK Antibody Clones (D5F3 and ALK1) in Anaplastic Large Cell Lymphoma (ALCL)
Background:Anaplastic large cell lymphoma (ALCL) is a T-cell lymphoma characterized by CD30 expression and subdivided into anaplastic lymphoma kinase (ALK) positive and negative subtypes that show clinically significant differences in outcomes. The current standard for evaluating ALK status is immunohistochemistry using the mouse monoclonal anti-human CD246 (ALK1) or fluorescence in situ hybridization. The novel rabbit monoclonal anti-human CD246 (D5F3) is proposed as an alternative to ALK1 and FDA approved for diagnosis of ALK-rearranged lung adenocarcinoma. However, its performance has not been systematically tested and compared to ALK1 in ALCL.
Design: Twenty-seven cases of ALCL were identified from institutional database searches and retrieved. A representative slide from each case was stained using ALK1 and D5F3 in an automated slide stainer. The intensity of cytoplasmic staining (graded 0-3, none, faint, moderate and strong) and percentage of positive cells (0, \u3c5, 5-50%, 50-75% and \u3e75%) were evaluated for each individual clone and subsequently compared between the two clones.
Results: Of the twenty-seven cases, nine were previously diagnosed as ALK expression positive by ALK-1 staining. Nine cases were positive for ALK expression by ALK1 staining (34.6%; 1 1+; 0 2+; 8 3+), while fourteen were positive by D5F3 staining (48.1%; 3 1+; 2 2+; 9 3+). There were no cases that were positive by ALK1, but not by D5F3, which had identified the five additional cases. For three of the nine cases (33.3%) positive by both stains, the D5F3 stained slides showed greater percentage of cells stained. The staining intensity was greater by D5F3 in one of nine cases, the other eight cases showed the same (3+) intensity by D5F3 and ALK1. FISH results are available in five cases (19.2%) and demonstrated 100% concordance with ALK expression by both IHC stains (four positive, one negative).
Conclusion: These findings support the use of D5F3 as an equivalent and potentially more sensitive alternative to ALK1 for the evaluation of ALK positivity in ALCL
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