Aldosterone is a steroid hormone which is secreted from the zona glomerulosa of the adrenal gland. It has a mineralocorticoid activity and is the most important regulator of plasma potassium. When plasma potassium increases, increased stimulation of aldosterone occurs directly and also as a result of the Renin-Angiotensin-Aldosterone System (RAAS). Aldosterone is also the most important regulator of sodium excretion.

This site contains correspondence, scientific notebooks, journals, blueprints, articles, and photographs documenting the invention of the telephone, his involvement in the first telephone company, family life, interest in the education of the deaf, and aeronautical and other scientific research. Included is his notebook containing the entry from March 10, 1876, describing the first successful experiment with the telephone, during which he spoke the famous words, Mr. Watson, Come here, I want to see you.

In the story, Alexander, Who Used to Be Rich Last Sunday, Alexander receives a dollar from his grandparents that he plans to save, but he spends it all, a little at a time. In this lesson, students count by twos to fill a container with 100 pennies. They are asked whether 100 pennies is the same amount of money as one dollar. They listen to the story and as Alexander spends his money, students come up and remove the correct number of pennies from a container. At the end of the story, students are again asked if 100 pennies is the same amount of money as one dollar. Students discuss the choices that Alexander made and give advice on how he could save his money to reach his goal of buying a walkie-talkie.

Alexandria Ocasio-Cortez (commonly referred to by her initials, AOC) is the youngest woman and youngest Latina to ever serve in the United States Congress.

This resource is from a collection of biographies of famous women. It is provided by the National Women's History Museum, and may include links to supplemental materials including lesson plans about the subject and related topics, links to related biographies, and "works cited" pages. The biographies are sponsored by Susan D. Whiting.

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:

"A new algorithm has successfully mapped part of the brain’s circuitry during shock therapy. For those suffering from severe depression, the approach could make for safer and more effective treatment. For brain research at large, it could lead to better ways of untangling noisy neural data to reveal real connections between different focal regions of the brain. Despite the gruesome picture painted by pop culture, modern shock therapy is a mild treatment option. In fact, over 2 million treatments are administered worldwide every year. Under general anesthesia, patients receive a small amount of current to the brain, triggering a brief seizure. The resulting changes in brain chemistry have been shown to reverse symptoms of mental health conditions like severe depression or bipolar disorder. But the procedure isn’t perfect. One of the most troubling side effects is memory loss, a result of poor targeting. To be effective and safe, induced seizures should be restricted to the pre-frontal cortex..."

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

This web page contains a free electronic version of my self-published textbook Algorithms, along with other lecture notes I have written for various theoretical computer science classes at the University of Illinois, Urbana-Champaign

This course treats various methods to design and analyze datastructures and algorithms for a wide range of problems. The most important new datastructure treated is the graph, and the general methods introduced are: greedy algorithms, divide and conquer, dynamic programming and network flow algorithms. These general methods are explained by a number of concrete examples, such as simple scheduling algorithms, Dijkstra, Ford-Fulkerson, minimum spanning tree, closest-pair-of-points, knapsack, and Bellman-Ford. Throughout this course there is significant attention to proving the correctness of the discussed algorithms. All material for this course is in English. The recorded lectures, however, are in Dutch.

Alice Coachman was the first Black woman from any country to win an Olympic gold medal.

This resource is from a collection of biographies of famous women. It is provided by the National Women's History Museum, and may include links to supplemental materials including lesson plans about the subject and related topics, links to related biographies, and "works cited" pages. The biographies are sponsored by Susan D. Whiting.

A vocal leader of the 20th century women’s suffrage movement, Alice Paul advocated for and helped secure passage of the 19th Amendment.

This resource is from a collection of biographies of famous women. It is provided by the National Women's History Museum, and may include links to supplemental materials including lesson plans about the subject and related topics, links to related biographies, and "works cited" pages. The biographies are sponsored by Susan D. Whiting.

Alice Wong is the founder and director of the Disability Visibility Project, an online community that fosters and amplifies disability media and culture.

This resource is from a collection of biographies of famous women. It is provided by the National Women's History Museum, and may include links to supplemental materials including lesson plans about the subject and related topics, links to related biographies, and "works cited" pages. The biographies are sponsored by Susan D. Whiting.

The horse is a monogastric hindgut fermenter. The horse evolved for grazing and it does so for up to 17 hours a day. A high proportion of the horse's dietary carbohydrate is in the form of starch. A mature horse eats 2-2.5% of it's body weight in dry matter every day, 1.5-1.75% of this should be fibre (hay/haylage). This is to prevent a rapid drop in pH in the large intestine and also to stimulate peristalsis in the gut and prevent build up of gas.

Gives an overview of the anatomy and physiology of mammalian and avian animals' alimentary systems.

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:

"Individuals with metabolic syndrome have a 2-fold increased risk of cardiovascular disease, but few strategies provide adequate cardiovascular risk reduction for this group. One option to lower this risk is to reduce atherogenic lipids, particularly low-density lipoprotein cholesterol. Statins are a recommended first-line therapy for this purpose, but this approach doesn’t always provide sufficient LDL-C lowering to optimally reduce cardiovascular risk. Now, researchers have shown that alirocumab, a proprotein converstase subtilisin/kexin type 9 inhibitor, or PCSK9 inhibitor, approved for LDL-C reduction, may address this need. Pooled clinical trial data from ten phase 3 clinical trials from the ODYSSEY clinical development program showed alirocumab significantly lowered LDL-C in individuals both with and without metabolic syndrome..."

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:

"Alirocumab, a drug that inhibits PCSK9 and helps clear the blood of atherogenic lipids, may be of benefit for individuals with type 2 diabetes who are most at risk of cardiovascular disease. According to the International Diabetes Federation, heart disease is the leading cause of death among people with type 2 diabetes. One factor that might contribute to that grim statistic is the high mixed dyslipidemia prevalence in this population. Mixed dyslipidemia is characterized by elevated triglycerides, and hence high triglyceride-rich lipoprotein, or remnant cholesterol, and high cholesterol levels; and low serum levels of high-density lipoprotein cholesterol, or HDL-C. Despite treatment with statins and other lipid-lowering therapies targeting atherogenic lipoproteins, management of mixed dyslipidemia remains challenging, especially among individuals with diabetes..."

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:

"A recent analysis suggests that ixazomib, an oral proteasome inhibitor (or PI), is tolerable and enhances therapeutic responses in patients with multiple myeloma. Ixazomib is approved for use in combination with lenalidomide and dexamethasone for patients who have already received 1 or more prior therapy. The promising results obtained for non-transplant patients taking ixazomib alone, if their disease has responded to primary induction therapy, point to a new possible treatment option for multiple myeloma. Multiple myeloma is a form of cancer that develops in bone marrow. Here, the body normally generates white blood cells that help fight off infection. But in multiple myeloma, malignant cells gradually crowd out these disease-fighting cells, compromising the body’s immune response, while also damaging the bones. The malignant cells also secrete large amounts of a non-functional protein which leads to kidney failure and other harms..."

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

This resource provides detailed information on how to cite and write in APA style. Writers will learn how to organize their work and develop in-text and formal reference lists according to APA.

"Normally, an animal gets half its DNA from its mother and half from its father. But Dolly had three mothers: one mother gave Dolly her DNA; one supplied an egg; and the third, her surrogate mother, gave birth to her. Dolly is an identical twin of the mother who gave her her DNA. But Dolly is six years younger."This kid-friendly Web page helps kids understand how and why Dolly was cloned, and understand the potential benefits of cloning as well as the controversy it raises.