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Abstract-Parsers are integral components of many natural language processing systems for machine translation, language understanding etc. Parsers need the syntax of the language for creating the parse tree. This paper discusses the derivation of the syntax rules for sentences in Malayalam language. It also discusses the list of hierarchical syntax rules in context free grammar form. A set of part of speech tags and chunk tags were derived for representing the rules in context free grammar notation. The rule set covers the syntax of most of the commonly occurring sentences in Malayalam language.

RNA interference (RNAi) has the potential to address gene regulatory role in an efficient manner. Short interfering RNA (siRNA), the small RNA deriving from RNAi can control the gene regulation, by a technique called gene silencing. Gene silencing is "switching off" genes which are over expressed, in a sequence specific manner. SiRNA has been experimentally studied in disease therapy and is expected to be developed as a nucleic acid based medicine for incurable diseases such as cancer. This paper reviews the mechanism of RNAi as a gene regulator in genomics and therapeutics.