Intended Audience: This activity was used for an introductory Geochemistry class, which …
Intended Audience: This activity was used for an introductory Geochemistry class, which contained students from sophomore level to master's students. We took the trip in mid-October, about as late as possible in Vermont, after they had gained some previous field experience and lab work in addition to an in introduction to these principles in class.
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Cluster of questions on acid rain deposition. (Note: this resource was added …
Cluster of questions on acid rain deposition.
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Produto educacional destinado, principalmente a pescadores artesanais e comunidades ligadas a pesca …
Produto educacional destinado, principalmente a pescadores artesanais e comunidades ligadas a pesca artesanal, contendo informações sobre espécies relacionadas a acidentes que envolvem animais aquáticos e pescadores artesanais, o perigo de determinados procedimentos inadequados e procedimentos recomendados como medidas de primeiros socorros.
It's no secret that greenhouse gases warm the planet and that this …
It's no secret that greenhouse gases warm the planet and that this has dire consequences for the environment whole islands swallowed up by rising seas, animal and plant species stressed by higher temperatures, and upsets in ecological interactions as populations move to cooler areas. However, carbon dioxide has another, less familiar environmental repercussion: making the Earth's oceans more acidic. Higher levels of carbon dioxide in the atmosphere mean that more carbon dioxide dissolves in the ocean. This dissolved carbon dioxide forms carbonic acid the same substance that helps give carbonated beverages their acidic kick. While this process isn't going to make the ocean fizzy anytime soon, it is introducing its own set of challenges for marine organisms like plankton and coral.
Acidity is a tricky concept, and it’s not always like how we …
Acidity is a tricky concept, and it’s not always like how we see it in the movies. As organic chemists, we need to know how to predict the strength of weak acids and bases. In this episode of Crash Course Organic Chemistry, we’ll learn four key factors that we can use to predict relative acidity. This important tool will help us us to predict the products of chemical reactions.
The Acoustics of Speech and Hearing is an H-Level graduate course that …
The Acoustics of Speech and Hearing is an H-Level graduate course that reviews the physical processes involved in the production, propagation and reception of human speech. Particular attention is paid to how the acoustics and mechanics of the speech and auditory system define what sounds we are capable of producing and what sounds we can sense. Areas of discussion include:
the acoustic cues used in determining the direction of a sound source,
the acoustic and mechanical mechanisms involved in speech production and
the acoustic and mechanical mechanism used to transduce and analyze sounds in the ear.
In this project, each student will be assigned to a group of …
In this project, each student will be assigned to a group of three to four students. Each group will be given random character description cards. These characters will be treated as the first generation in a fictitious town. The cards will include specific genetic traits, skills, jobs, as well as reference if the character suffers from type 2 diabetes. Students will need to use the character cards to author and illustrate a short story about the fictitious town which follows at least three generations of the families in the cards. Students must also include pedigrees for a minimum of three traits as well as diabetes as evidence of inheritance.
This resource is a video abstract of a research paper created by …
This resource is a video abstract of a research paper created by Research Square on behalf of its authors. It provides a synopsis that's easy to understand, and can be used to introduce the topics it covers to students, researchers, and the general public. The video's transcript is also provided in full, with a portion provided below for preview:
"Actinobacteria are some of the most widely distributed bacteria in soils and are well known for their ability to degrade plant residues in pure culture in the laboratory. Yet, despite the importance of microbe-driven decomposition to carbon sequestration in terrestrial systems, their importance and specific activity across diverse environments in the field are unknown. Researchers recently evaluated the ecophysiological roles of Actinobacteria in rice straw residue decomposition in a series of field and microcosm experiments. They found that although Actinobacteria represented only 4.6% of the total bacterial abundance, they encoded 16% of the total carbohydrate-active enzymes (CAZymes) involved in the breakdown of carbohydrates. The researchers also found that Actinobacteria taxonomic and functional compositions were relatively stable during straw decomposition and that the importance of Actinobacteria in decomposition increased as soil fertility decreased..."
The rest of the transcript, along with a link to the research itself, is available on the resource itself.
Using the article "Stop Raising Awareness Already" by Cristiano and Neimand and …
Using the article "Stop Raising Awareness Already" by Cristiano and Neimand and a six-step template, students create a plan to show how they apply the knowledge learned throughout the term to make a broader impact. The students are asked to very narrowly choose a single action they want a group of stakeholders to take and develop a multiple-step plan to accomplish the action. The students are required to select and justify a targeted stakeholder, develop an action, identify a messenger that can influence their targeted stakeholder to take the action, develop a sticky message relating the "ask" to the goal of the campaign, and document their key assumptions imbedded in their action plan.
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This assignment is a 10-hour, out-of-class project where each student designs and …
This assignment is a 10-hour, out-of-class project where each student designs and carries out an action plan to enhance sustainability. Students select from a large suite of alternative actions, most of which can be quantified for reductions in CO2 and energy consumption, as well as in dollar savings.
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This resource is a video abstract of a research paper created by …
This resource is a video abstract of a research paper created by Research Square on behalf of its authors. It provides a synopsis that's easy to understand, and can be used to introduce the topics it covers to students, researchers, and the general public. The video's transcript is also provided in full, with a portion provided below for preview:
"Humans rely on microbial communities in both natural and applied settings. One such applied setting is wastewater treatment plants, which use microbial communities to remove pollutants. However, the stability of the taxonomic diversity in these settings is not well understood. To close this gap, researchers examined how the microbial community in activated sludge changed over time in a full-scale wastewater treatment plant. For the first 3 years of a 9-year series, the microbial community fluctuated around a stable average. Then a bleaching event, marked in red under the timeline, abruptly pushed the community to an alternative stable state, where the originally dominant Actinobacteriota were disproportionally depleted and replaced with Proteobacteria, but these taxonomic changes led to little change in either the metabolic profile of the community or system performance. In a fine-scale analysis of dynamics, the researchers identified cohorts that dominated at different periods..."
The rest of the transcript, along with a link to the research itself, is available on the resource itself.
This resource is a video abstract of a research paper created by …
This resource is a video abstract of a research paper created by Research Square on behalf of its authors. It provides a synopsis that's easy to understand, and can be used to introduce the topics it covers to students, researchers, and the general public. The video's transcript is also provided in full, with a portion provided below for preview:
"Acute myeloid leukemia (AML) is a type of blood and bone marrow cancer with a low survival rate. One reason AML is so deadly is because it can evade the immune system, in part by downregulating proteins like MICA, which normally marks damaged or cancerous cells in the body for immune destruction. To improve treatment prospects, researchers recently searched for molecules that can restore MICA levels in AML cells. They found that the transcription factor KFL4 is involved in MICA expression. In addition, treating cultured AML cells with the KLF4-activating compound APTO253 successfully induced MICA expression, while inhibiting the expression of the cancer gene MYC. These changes made the AML cells more susceptible to being killed by immune cells. Although studies in animals and humans are still needed, these findings reveal that APTO253 can improve immune cells’ ability to detect and kill AML cells and suggest that targeting KFL4/MICA is a promising option for AML treatment..."
The rest of the transcript, along with a link to the research itself, is available on the resource itself.
By far most field trips in structural geology and regional tectonics do …
By far most field trips in structural geology and regional tectonics do NOT take place in large urban centers with a trip focus on mitigation of hazards. What is described here is an example of the instructional and learning opportunities associated with active tectonic examination of large population centers.
ACTIVE TECTONICS, HAZARDS, ACTIVE TECTONICS AND SOCIETY, URBAN GEOLOGY, EARTHQUAKES
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This resource is a video abstract of a research paper created by …
This resource is a video abstract of a research paper created by Research Square on behalf of its authors. It provides a synopsis that's easy to understand, and can be used to introduce the topics it covers to students, researchers, and the general public. The video's transcript is also provided in full, with a portion provided below for preview:
"In northern ecosystems, winter carbon loss is estimated to exceed growing season carbon uptake, primarily because of microbial decomposition. Viruses in soil alter microbial carbon cycling by affecting metabolic pathways and killing their hosts, but whether viruses are active under anoxic and sub-freezing soil conditions remains unknown. To find out, a recent study used stable isotope probing (SIP) targeted metagenomics to investigate active microbes in Alaskan Arctic peat soils under simulated winter conditions, with a particular focus on viruses and virus-host dynamics. Overall, 46 bacterial and 243 viral populations actively took up soil water labeled with ¹⁸O and respired CO₂. Active bacteria represented a small proportion of the total microbial community but were able to ferment and degrade organic matter. In contrast, a large diversity of viruses were found to be active, one-third of which were linked to active bacteria..."
The rest of the transcript, along with a link to the research itself, is available on the resource itself.
In the minerals and products activity, students match physical products with actual …
In the minerals and products activity, students match physical products with actual mineral samples, using observable properties as well as the minerals' chemical formulas and some products' ingredient lists.
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The discussion presented here is meant to augment, not replace, the pre-class …
The discussion presented here is meant to augment, not replace, the pre-class reading, as well as to provide an introduction to concept maps.
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This short activity (10--15 minutes) for Unit 1 introduces students to the …
This short activity (10--15 minutes) for Unit 1 introduces students to the general relationship between economic development and resource use, and, particularly with the follow-up homework, the relationship among growing populations, increasing economic development, and natural resource extraction. The activity is intended to be completed by individuals or small groups but could also be used for a guided class discussion. This activity serves as a transition to Unit 2.
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