The energy need of the world driv sources of energy. Energy harnessing from sola interest not only from its potential, but also b source.Understanding problems in designing a solar great value. Manufacturing process leads to m array. The mismatch error need to address w solar PV system. Estimation of how much is mismatch is needed before hand. This paper addresses the problem in a step b talks of a method to model a solar PV equatio then finds out the statistical data through M Monte Carlo algorithm to find out error prop concludes how to use analytical method to ge of mismatch error. This analytic method can b to a system designer .

We report a unique case of a 34-year-old man with ulcerative colitis, previously in complete remission with intravenous vedolizumab monotherapy, who developed an urticarial injection-site reaction on switching to a subcutaneous preparation and thereafter experienced a new hypersensitivity reaction on switch back to intravenous vedolizumab, necessitating complete discontinuation from this drug. This case highlights the need for vigilance on switching back to intravenous preparations of vedolizumab, in response to injection-site reactions with a subcutaneous preparation, even if the intravenous preparation had been previously well tolerated by the patient.

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