The abomasum is the fourth chamber in the ruminant. It functions similarly to the carnivore stomach as it is glandular and digests food chemically, rather than mechanically or by fermentation like the other 3 chambers of the ruminant stomach.

BCC Bioscience Image Library is a media file repository of images and video clips made freely available to the public, with special attention to the needs of educators and students in the biological sciences. The resources are licensed under Creative Commons 0. This means all content is free, with no restrictions on how the material may be used, reused, adapted or modified for any purposes, without restriction under copyright or database law.

This project was partially funded by a $20,000,000 grant awarded by the U.S. Department of Labor’s Employment and Training Administration, Grant # TC-26450-14-60-A-25. The product was created by the grantee and does not necessarily reflect the official position of the U.S. Department of Labor. The U.S. Department of Labor makes no guarantees, warranties, or assurances of any kind, express or implied, with respect to such information, including any information on linked sites and including, but not limited to, accuracy of the information or its completeness, timeliness, usefulness, adequacy, continued availability, or ownership.

If you have any questions contact professor Faye Reynolds at: bioimagesoer@gmail.com

This video segment adapted from First Light explains why the highest peak in the Pacific, Mauna Kea, is an ideal site for astronomical observations. Featured are new telescope technologies that allow astronomers to explore the universe in more depth.

A selection of Library of Congress primary sources exploring Abraham Lincoln and his national role. This set also includes a Teacher's Guide with historical context and teaching suggestions. Speeches, correspondence, campaign materials and a map documenting the free and slave states in 1856 chronicle Lincoln���s rise to national prominence

This art history video discussion examines Jackson Pollock's "One: Number 31", 1950, Oil and enamel paint on unprimed canvas, 1950 (MoMA).

This document uses headings to allow students to begin the search with either the codon or the amino acid.

Il s’agit d’un  fichier Excel (Outil de gestion du stock)

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:

"The Isthmus of Tehuantepec in Mexico is one of the windiest places on earth making it a hotspot for investment in wind energy. But that’s proving problematic. Because although wind-energy investments appear to be paving the way toward a sustainable future a new study reports that a lack of good governance is proving unsustainable for the large indigenous population that calls the Isthmus home. Mexico is among the many nations that have implemented policies supporting the Sustainable Development Goals established by the United Nations. a blueprint for achieving a sustainable future for our planet. But in the Isthmus of Tehuantepec, these efforts do not adequately include local indigenous communities. It’s a problem caused by a combination of corruption, poor accountability, and limited access to information about energy and the environment. Fortunately, paths for reversing these poor governance patterns do appear to exist..."

The rest of the transcript, along with a link to the research itself, is available on the resource itself.

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 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.

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.

This visual representation is away for parents to understand how UDL uses Action and Expression (the "How" of learning)

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 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.

Active transport is reliant on carrier proteins and thus follows the same rules as facilitated diffusion in that they are specific have a maximum rate and are subject to competition. Crucially they transport substances against their concentration gradient and so require energy to work.

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.

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:

"Some pain after a major operation is expected -- but some patients suffer more than others. More than 60% of surgical patients have moderate-to-severe postoperative pain, potentially predisposing them to persistent postsurgical pain. But who falls into which category? To better predict patients’ pain -- and thereby provide better treatment -- researchers at the University of Florida studied a large group of surgical patients to identify different pain trajectories. The team’s work published in _Anesthesiolog_y revealed five distinct patterns determined in large part by patient-specific factors such as age, sex, and psychologic features. The researchers monitored patents’ pain reports for 7 days in 360 patients recovering from a variety of different surgeries. Pain was evaluated using the [Brief Pain Inventory], which asks for a patient’s average, worst, and least pain in the last 24 hours on a scale from zero to 10..."

The rest of the transcript, along with a link to the research itself, is available on the resource itself.

The Ad*Access Project presents images and database information advertisements printed in U.S. and Canadian newspapers and magazines between 1911 and 1955. This selection of ads is about trains.