The different forms or allotropes of carbon (see below) include the hardest naturally occurring substance, diamond, and also one of the softest known substances, graphite. Moreover, it has an affinity ...
Boric acid has antiseptic, antifungal, and antiviral properties and for these reasons is applied as a water clarifier in swimming pool water treatment. Mild solutions of boric acid have been used as e ...
The word boron was coined from borax, the mineral from which it was isolated, by analogy with carbon, which it resembles chemically. For the etymology of borax, see that article.SassoliteBorax glazes ...
Beryllium is non-magnetic. Therefore, tools fabricated out of beryllium are used by naval or military explosive ordnance disposal teams for work on or near naval mines, since these mines commonly have ...
Beryllium is a steel gray and hard metal that is brittle at room temperature and has a close-packed hexagonal crystal structure. It has exceptional stiffness (Young's modulus 287 GPa) and a reasonably ...
Metallic lithium and its complex hydrides, such as Li, are used as high energy additives to rocket propellants. Lithium aluminum hydride can also be used by itself as a solid fuel.The launch of a torp ...
Like the other alkali metals, lithium has a single valence electron that is easily given up to form a cation. Because of this, it is a good conductor of heat and electricity as well as a highly reacti ...
Early intervention in psychosis is on the observation that identifying and treating someone in the early stages of a psychosis can improve their longer term outcome. This approach advocates the use of ...
People with psychosis may have one or more of the following: hallucinations, delusions, catatonia, or a thought disorder, as described below. Impairments in social cognition also occur.Hallucinations ...
People's conceptualizations of depression vary widely, both within and among cultures. "Because of the lack of scientific certainty," one commentator has observed, "the debate over depression turns on ...
The three most common clinical treatments for depression are psychotherapy, medication, and electroconvulsive therapy. Psychotherapy is the treatment of choice (over medication) for people under 18. C ...
A diagnostic assessment may be conducted by a suitably trained general practitioner, or by a psychiatrist or psychologist, who records the person's current circumstances, biographical history, current ...
Major depression significantly affects a person's family and personal relationships, work or school life, sleeping and eating habits, and general health. Its impact on functioning and well-being has b ...
Schizophrenia has great human and economic costs. It results in a decreased life expectancy by 10–25 years. This is primarily because of its association with obesity, poor diet, sedentary lifestyles, ...
Individuals with schizophrenia may experience hallucinations (most reported are hearing voices), delusions (often bizarre or persecutory in nature), and disorganized thinking and speech. The last may ...
