Food supply and seasonal variation in breeding success: an experiment in the European coot

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On September 26, , four men and four women in dark-blue spacesuits waved goodbye to friends, families and a bank of television cameras as they stepped through an airtight door to embark on an unprecedented mission. While they could communicate with the outside world by email, telephone and fax, for two years there would be no hugs with loved ones, no food deliveries, not even any toilet paper. The Synergists operated ecological projects from the tropical rainforest in Puerto Rico to the Australian outback and even built their own ship that they sailed around the world. Candidates for the Biosphere II project stand on the “lung” of large, enclosed environment. Longtime commune member Mark Nelson was among the eight-person crew who entered Biosphere 2 in the fall of The Biospherians celebrated Thanksgiving with a feast of chicken, baked squash and sweet potato pie and toasted the winter solstice with rice wine. Wintertime cloud cover, however, contributed to crop failures and low oxygen levels that made the eco-explorers feel as if they were at an elevation of 14, feet. Hummingbirds and honeybees died while ant and cockroach populations exploded. The Biospherians lost significant amounts of weight as the long workdays, oxygen depletion and low-calorie diets made even climbing stairs a daunting challenge. Two weeks after entering Biosphere 2, Poynter departed for surgery after severing a fingertip in a rice-threshing machine.

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ACE brought together an international team of physicists, biologists and medics to study the biological effects of antiprotons. The experiment brought together a team of experts in physics, biology and medicine from 10 institutes around the world who were the first to study the biological effects of antiprotons.

To date, particle-beam therapy has used mainly protons to destroy cancer cells. When such a beam of heavy, charged particles enters a human body, it initially inflicts very little damage. Only in the last few millimetres of the journey, as the beam ends its gradual slow-down and comes to an abrupt stop does significant damage occur.

The Belko Experiment () on IMDb: Movies, TV, Celebs, and more.

Millikan oil-drop experiment , first direct and compelling measurement of the electric charge of a single electron. It was performed originally in by the American physicist Robert A. Millikan , who devised a straightforward method of measuring the minute electric charge that is present on many of the droplets in an oil mist. The force on any electric charge in an electric field is equal to the product of the charge and the electric field.

Millikan was able to measure both the amount of electric force and magnitude of electric field on the tiny charge of an isolated oil droplet and from the data determine the magnitude of the charge itself. A closed chamber with transparent sides is fitted with two parallel metal plates, which acquire a positive or negative charge when an electric current is applied.

At the start of the experiment, an atomizer sprays a fine mist of oil droplets into the upper portion of the chamber. Under the influence of gravity and air resistance, some of the oil droplets fall through a small hole cut in the top metal plate. When the space between the metal plates is ionized by radiation e.

Stanford prison experiment

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Counting in French follows a reasonably obvious pattern This lesson will have you covered for everything between one and one million, and you’ll learn how “ninety” in one French-speaking country doesn’t necessarily equal ninety in another! Question words are amongst the most important vocabulary you’ll learn. Not only will they allow you to extract information from others, but you can hold whole conversations with these words alone!

Ask any four year old! The partitive article “some” or “any” is used a lot more in French than in English. It’s a pretty simple one, and a good one to master if you’d prefer to have some cake, rather than the whole thing. If you have any aspirations of being able to catch a train, book an appointment, or keep a dinner date If you’re planning a jaunt into French-speaking territory, you’re bound to encounter communication problems at one point or other.

Knowing how to politely say “I’m sorry, but I have no idea what you’re saying” can be pretty useful.

Run an experiment from an opportunity

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History Stories. When Biosphere 2 Became a Grand Experiment in Self-Isolation. Publish date: May 12,

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Georgia’s Experiment in Human Sacrifice

By Martha Cliff for MailOnline. A male model has conducted a social experiment to find out what really makes women swipe right on dating apps. The experiment was compiled by male model Ben Southerst, 29, who went on the dating app Tinder with five different looks to find out which got the most matches from potential female partners.

Publication Date. Dec Language. English Year: Release Date. (PsycINFO); (APA PsycArticles). Correction Date.

Stanford Prison Experiment , a social psychology study in which college students became prisoners or guards in a simulated prison environment. The experiment, funded by the U. It was intended to measure the effect of role-playing, labeling, and social expectations on behaviour over a period of two weeks. However, mistreatment of prisoners escalated so alarmingly that principal investigator Philip G. Zimbardo terminated the experiment after only six days.

Guards were ordered not to physically abuse prisoners and were issued mirrored sunglasses that prevented any eye contact.

The Menace Within

Stanford Prison Experiment. Male college students needed for psychological study of prison life. More than 70 people volunteered to take part in the study, to be conducted in a fake prison housed inside Jordan Hall, on Stanford’s Main Quad. The leader of the study was year-old psychology professor Philip Zimbardo.

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We investigated experimentally the seasonal role of food supply in brood survival of the European coot Fulica atra. For two breeding seasons, individual pairs were offered supplemental food the first ten days after their young hatched. Under natural conditions this period was largely responsible for the seasonal variation in brood survival. Our experiment tested three hypotheses: 1 food supply is not involved in breeding success at any date other factors hypothesis , 2 food supply limits success independently of date elevation hypothesis , and 3 food supply affects success seasonally and is responsible for the natural seasonal trend in success date hypothesis.

Experimental pairs with supplemental food raised heavier, larger and more chicks than control pairs. Consistent with the date hypothesis , food supplementation abolished seasonal variation in chick survival. Chick growth under supplemental food was in agreement with the elevation hypothesis. This discrepancy was probably due to the limited supply of additional food.

The Little Albert Experiment

Is love blind? Or at the very least, can it be? We live in an age where finding a new partner is as easy as a swipe to the left. Two of the biggest players in the dating game, looks and social media, are totally taken off the table for this experiment. Like any experiment, there are a lot of variables, some good, some bad. Some could argue that most first dates are over a drink, so why should this be any different, but the point is for this to be completely different from any other first date.

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By Saul McLeod , updated Zimbardo and his colleagues were interested in finding out whether the brutality reported among guards in American prisons was due to the sadistic personalities of the guards i. For example, prisoner and guards may have personalities which make conflict inevitable, with prisoners lacking respect for law and order and guards being domineering and aggressive.

Alternatively, prisoners and guards may behave in a hostile manner due to the rigid power structure of the social environment in prisons. Zimbardo predicted the situation made people act the way they do rather than their disposition personality. To study the roles people play in prison situations, Zimbardo converted a basement of the Stanford University psychology building into a mock prison.

He advertised asking for volunteers to participate in a study of the psychological effects of prison life. The 75 applicants who answered the ad were given diagnostic interviews and personality tests to eliminate candidates with psychological problems, medical disabilities, or a history of crime or drug abuse.

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