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The Food Safety Modernization Act (FSMA) was signed into law by President Barack Obama on January 4, 2011. The FSMA has given the Food and Drug Administration (FDA) new authority to regulate the way foods are grown, harvested and processed. The law grants the FDA a number of new powers, including mandatory recall authority, which the agency had ...
A 2011 study by Diana Zuckerman and Paul Brown of the National Research Center for Women and Families, and Steven Nissen of the Cleveland Clinic, published in the Archives of Internal Medicine, showed that most medical devices recalled in the last five years for "serious health problems or death" had been previously cleared by the FDA using the ...
Charges against the owner were filled, and six months later, a law called the Food, Drug, and Cosmetic Act of 1938 was signed. This law forced all new food, drugs, and cosmetics to be certified by the FDA before being put on the market. [17] This act granted the FDA with enforcing and legal power that has helped regulate food and drugs ever since.
A study suggests and defines a 'planetary boundary' for novel entities such as plastic- and chemical pollution and concluded that it has been crossed, suggesting – alongside many other studies and indicators – that more and improved regulations or related changes (e.g. enforcement- or trade-related changes) are necessary.
The following outline acts as an overview of and topical guide to chemistry: . Chemistry is the science of atomic matter (matter that is composed of chemical elements), especially its chemical reactions, but also including its properties, structure, composition, behavior, and changes as they relate to the chemical reactions.
Also acid ionization constant or acidity constant. A quantitative measure of the strength of an acid in solution expressed as an equilibrium constant for a chemical dissociation reaction in the context of acid-base reactions. It is often given as its base-10 cologarithm, p K a. acid–base extraction A chemical reaction in which chemical species are separated from other acids and bases. acid ...
The key concepts of physical chemistry are the ways in which pure physics is applied to chemical problems. One of the key concepts in classical chemistry is that all chemical compounds can be described as groups of atoms bonded together and chemical reactions can be described as the making and breaking of those bonds. Predicting the properties ...
For Faraday's first law, M, F, v are constants; thus, the larger the value of Q, the larger m will be. For Faraday's second law, Q, F, v are constants; thus, the larger the value of (equivalent weight), the larger m will be. In the simple case of constant-current electrolysis, Q = It, leading to