نتایج جستجو برای: environmental catastrophe 132 percent
تعداد نتایج: 483178 فیلتر نتایج به سال:
Fire disasters were a major threat to eighteenth-century villages and towns. Following such conflagrations, writers, artists, publishers eager represent the disaster in great detail. Printed poems pamphlets did not only describe flames’ destruction, but also put emphasis on solidarity during after catastrophe. The risks of looting social disorder acknowledged by authors, received little attenti...
background and objectives: production and use of fertilizers in common agriculture have been many environmental problems. while the application of organic fertilizers instead of chemical fertilizers have a important role in soil fertility, increase quality of production and safety of agricultural ecosystems. pumkin, is an important annual herbaceous plant belongs to the cucurbitaceae family due...
*National Center for Toxicological Research, Division of Neurotoxicology, 3900 NCTR Road, Jefferson, Arkansas 72079; †Gradient Corporation, 238 Main Street, Cambridge, Massachusetts 02142; ‡Department of Environmental Medicine, Box EHSC, University of Rochester Medical School, Rochester, New York 14642; §Behavioral Toxicology Laboratory, Division of Neurotoxicology, HFT-132, National Center for...
This paper addresses some mathematical problems arising from the infrared (IR) catastrophe in quantum field theory. IR catastrophe is formulated and studied in operator theory, characterized by the Carleman operator. Non-existence of ground state under IR catastrophe is also investigated with the help of the characterization. The theory presented in this paper is applied to the Hamiltonian of t...
This review-essay explores the uses and limits of cost-benefit analysis in the context of environmental protection, focusing on three recent books: Priceless, by Frank Ackerman and Lisa Heinzerling; Cellular Phones, Public Fears, and A Culture of Precaution, by Adam Burgess; and Catastrophe: Risk and Response, by Richard A. Posner. The review-essay emphasizes three principal limitations on the ...
In this paper, we study from the perspective of an insurance company the Reinsurance Contract Placement problem. Given a reinsurance contract consisting of a fixed number of layers and a set of expected loss distributions (one per layer) as produced by a Catastrophe Model, plus a model of current costs in the global reinsurance market, identifying optimal combinations of placements (percent sha...
Many global catastrophic risks threaten major disruption to global food supplies, including nuclear wars, volcanic eruptions, asteroid and comet impacts, and plant disease outbreaks. This paper discusses options for increasing the resilience of food supplies to these risks. In contrast with local catastrophes, global food supply catastrophes cannot be addressed via food aid from external locati...
Aneuploidy is frequently detected in human cancers and is implicated in carcinogenesis. Pharmacologic targeting of aneuploidy is an attractive therapeutic strategy, as this would preferentially eliminate malignant over normal cells. We previously discovered that CDK2 inhibition causes lung cancer cells with more than two centrosomes to undergo multipolar cell division leading to apoptosis, defi...
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