Recent advances in β-lactam chemistry

Beta-lactams are one of the essential heterocycles which have saved humans from deadly infections. Over the years many methods have been developed. This review classifies various methods based on reagents and reactions. It has been concluded that Ketene−Imine Staudinger Reaction is the method of choice.

Certain results on entire functions defined by bicomplex Dirichlet series

In this work, we have introduced and studied the Bicomplex version of Complex Dirichlet Series  . We have derived condition for which the sum function of the Bicomplex Dirichlet Series represents an entire function. The Entireness of sum and Hadamard product of two Entire Bicomplex Dirichlet Series are also discussed.

Fabrication and characterization of carbon nanotubes-based Polymer nanocomposites

Polymer nanocomposites are used in different application such as load bearing, aerospace and biomedical etc. Present work describes the fabrication and preparation of carbon nanotubes based polymer nanocomposites by an injection molding machine. Multi walled carbon nanotubes reinforcement was mixed with pure polymer (high density polyethylene) of injection moulding grade matrix. The resultant matrix shows remarkable strength as compare to pure material due to material behaves like as composites. The carbon nano fluid was mixed with HDPE pellets for CNT coated HD PE pellets. This coated pellets used as raw material for an injection molding to form “dog bone shaped” CNT/HDPE tensile specimens of  dimensions 120 mm long, 2 mm thick according to ASTM. Different weight fraction of CNT were mixed with pure material and improvement in the strength, toughness, young modulus, stiffness etc. were studied using universal testing machines, Scanning electron microscopy and optical microscopic. It was concluded that the composites have higher mechanical properties compared to pure material.