Subject:
All Disciplines Arts & Humanities Biology & Life Sciences Business & Economics Chemistry & Materials Science Computer Science & Mathematics Engineering Environmental & Earth Sciences Medicine & Pharmacology Physical Sciences Public Health & Healthcare Social Sciences
Sort:
Hottest Latest Alphabetical (A-Z) Alphabetical (Z-A)
Type:
All Topic Review Biography
Topic Review
Warp-Field Experiments
Warp-field experiments are a series of current and proposed experiments to create and detect instances of spacetime warping. The ultimate goal is to prove or disprove the possibility of spacetime metric engineering with reasonable amounts of energy.
  • 903
  • 14 Oct 2022
Topic Review
Warning Systems in Cloud Computing Early Warning Systems
An early warning system (EWS) is an integrated system that facilitates preparedness and response mechanisms through the dissemination of early warning to reduce the impact of a natural disaster. An early warning system is an indispensable tool that helps save lives and reduce the impact of disasters on any infrastructure, such as roads, buildings, farmlands, etc. It has been estimated that USD 800 million is spent annually to develop and operationalize EWSs in developing countries that lack the requisite resources to mitigate the impact of any natural disaster.
  • 261
  • 22 Sep 2023
Topic Review
Warming Climate and Boreal Forest
The southern boreal forests of North America are susceptible to large changes in composition as temperate forests or grasslands may replace them as the climate warms.
  • 524
  • 18 Jan 2022
Topic Review
Wargaming
A wargame (also war game) is a strategy game that deals with military operations of various types, real or fictional. Wargaming is the hobby dedicated to the play of such games, which can also be called conflict simulations, or consims for short. When used professionally by the military to study warfare, "war game" may refer to a simple theoretical study or a full-scale military exercise. Hobby wargamers have traditionally used "wargame", while the military has generally used "war game"; this is not a hard rule. Although there may be disagreements as to whether a particular game qualifies as a wargame or not, a general consensus exists that all such games must explore and represent some feature or aspect of human behaviour directly bearing on the conduct of war, even if the game subject itself does not concern organized violent conflict or warfare. Business wargames exist as well, but in general, they are only role-playing games based on market situations. Wargames are generally categorized as historical, hypothetical, fantasy, or science fiction. Historical games form by far the largest group. These games are based upon real events and attempt to represent a reasonable approximation of the actual forces, terrain, and other material factors faced by the actual participants. Hypothetical games are games grounded in historical fact but concern battles or conflicts that did not (or have yet to) actually happen. Fantasy and science fiction wargames either draw their inspiration from works of fiction or provide their own imaginary setting. Highly stylized conflict games such as chess are not generally considered wargames, although they are recognized as being related. Games involving conflict in other arenas than the battlefield, such as business, sports or natural environment are similarly usually excluded. The modern wargaming hobby has its origins at the beginning of the 19th century, with von Reiswitz's Kriegsspiel rules. Later, H.G. Wells' book Little Wars ushered in the age of miniatures games in which two or more players simulated a battle as a pastime. During the 1950s the first large-scale, mass-produced board games depicting military conflicts were published. These games were at the height of their popularity during the 1970s, and became quite complex and technical in that time. Wargaming has changed dramatically over the years, from its roots in miniatures and board wargaming, to contemporary computer and computer assisted wargames; however, both miniature and board wargames maintain a healthy, if small, hobby market with lighter games being popular with many 'non-wargamers'.
  • 871
  • 10 Oct 2022
Topic Review
Warfarin Sensitivity
Warfarin sensitivity is a condition in which individuals have a low tolerance for the drug warfarin.
  • 468
  • 23 Dec 2020
Topic Review
Warfarin Resistance
Warfarin resistance is a condition in which individuals have a high tolerance for the drug warfarin. Warfarin is an anticoagulant, which means that it thins the blood, preventing blood clots from forming.
  • 676
  • 23 Dec 2020
Topic Review
Warfarin
Warfarin has been utilized for decades as an effective anticoagulant in patients with a history of strong risk factors for venous thromboembolism (VTE).
  • 2.6K
  • 05 May 2021
Biography
Ward Plummer
E. Ward Plummer is an American physicist. His main contributions are in surface physics of metals. Plummer is a Professor of Physics at Louisiana State University. Plummer received a Bachelor of Arts degree from Lewis and Clark College in 1962 and completed his Ph.D. degree in physics at Cornell University in 1967, working with Prof. Thor Rhodin. His thesis work was on atomic binding of 5-d t
  • 401
  • 10 Nov 2022
Topic Review
Warburgia ugandensis Leaf and Bark Extracts
In organic viticulture, copper-based fungicides are commonly used to suppress Downy Mildew infection, caused by the oomycete Plasmopara viticola. However, the frequent and intensive use of such fungicides leads to accumulation of the heavy metal in soil and nearby waters with adverse effects on the ecosystem. Therefore, alternative, organic fungicides against Downy Mildew are urgently needed to reduce the copper load in vineyards. In this entry, the use of Warburgia ugandensis Sprague (Family Canellacea) leaf and bark extracts as potential fungicides against Downy Mildew were evaluated. In vitro (microtiter) and in vivo (leaf discs, seedlings) tests were conducted, as well as field trials to determine the efficacy of the extracts against Downy Mildew. The results revealed an MIC100 of 500 µg/mL for the leaf extract and 5 µg/mL for the bark extract. Furthermore, experiments with leaf discs and seedlings demonstrated a strong protective effect of the extracts for up to 48 h under (semi-) controlled conditions. However, in field trials the efficacy of the extracts distinctly declined, regardless of the extracts’ origin and concentration.
  • 484
  • 28 Jan 2022
Topic Review
Warburg Effect in Colorectal Carcinogenesis
Colorectal cancer is one of the most leading causes of death worldwide. The Hallmark of colorectal cancer is the increase of glucose uptake and lactate production even in the presence of oxygen, a phenomenon known as the “Warburg effect”. 
  • 601
  • 26 Sep 2021
  • Page
  • of
  • 5495
Featured Entry Collections
>>

Featured Books

>>
Encyclopedia of Social Sciences
Encyclopedia of COVID-19
Encyclopedia of Fungi
Encyclopedia of Digital Society, Industry 5.0 and Smart City
ScholarVision Creations
Feedback