Other causes of valve disease include: 1  Deposits of calcium (calcification) in parts of the valve. 2  A floppy valve, which is a common cause of mild mitral valve regurgitation. 3  Some congenital heart problems. 4  Infection of the valve (infective endocarditis). 5  A complication of various uncommon diseases.
exists and is an alternate of . Castor is a variable star and also a quadruple star system, and has a spectral class of A1/A2 giving it a colour of white to white blue. Castor is a variable star and also a quadruple star system, and has a spectral class of A1/A2 giving it a colour of white to white blue. See link for more information.  <br /><br /> See link for more information. Castor is a variable star and also a quadruple star system, and has a spectral class of A1/A2 giving it a colour of white to white blue. <br /><br />
Castor is a hardy crop, easy to establish on the field, resistant to drought, tolerate different types of soil even marginal soil and yield 350 â 900 kg oil per hactare. Castor is an important oilseed crop with great utilitarian value in industry, pharmaceutical and agricultural sectors.n most castor varieties, female flowers open before the male while in others male open first [22]. The male flowers shed most of the viable pollens between 1 to 2 days after opening. The pollens normally shed from 2 - 3 hours before sunrise until late afternoon, and there is frequently a peak at mid-morning.