It was argued in \cite{DallAgata:2022abm} that the Volkov-Akulov (VA) model as well similar models supergravity and related KKLT string theory, suffer from tachyonic instabilities due to goldstino condensation. The authors of constructed a specific with two unconstrained interacting chiral superfields linearly realized supersymmetry which has an unstable vacuum. They claimed this becomes equiva...

the silver spr chip was modified by alkaline-silane condensation with aminopropyltriethoxysilane (aptes) in naoh aqueous solution at different times. silver sputtered slides coated with aptes were immersed in naoh solution, enabling us to produce silver surfaces homogeneously covered with aptes. the surface properties of grafted aptes on sputtered silver surface as a occasion of time were studi...

vilsmeier several diamide derivatives containing 2-chloroquinoline scaffolds were synthesized via ugi reaction of 2-chloroquinoline-3-carboxaldehydes, amines, carboxylic acids and isocyanides. the diversity of these quinolinyl ugi-adducts was increased by using 2-chloroquinoline-3-carboxylic acids as a source of acid. among them, compounds 2d, 2n, 2p, 4a, 4c and 4e displayed moderate to good an...

introduction: for a successful root canal treatment, canal must be obturated apically, coronally and laterally to prevent microleakage and canal reinfection. cold lateral condensation is the most popular method of canal obturation; an easy method with a controlled filling. cold lateral technique disadvantages are presence of void, possible vertical root fracture, and absence of a homogenous and...

“I am indebted to Dr. (now Professor Sir Robert) Williams for bringing me into the team [The (British) PHLS Committee on Formaldehyde Disinfection] which investigated the use of formaldehyde for disinfecting fabrics. He gave me the job of finding a nontoxic neutralizing agent with which to treat infected fabric after exposure to formaldehyde vapour, in order that the bacterial viability results...

A novel green and efficient one-pot multicomponent reaction of dihydropyridine derivatives was reported as having good to excellent yield. In the presence of the catalyst ceric ammonium nitrate (CAN), different 1,3-diones and same starting materials as 5-bromothiophene-2-carboxaldehyde and ammonium acetate were used at room temperature under solvent-free condition for the Hantzsch pyridine synt...

The classical Hantzsch reaction is one of the simplest and most economical methods for the synthesis of biologically important and pharmacologically useful 1,4-dihydropyridine derivatives. Bismuth nitrate pentahydrate under microwave irradiation is proven to act as a very efficient catalyst for a one-pot, three-component synthesis of 1,4-dihydropyridines in excellent yields from diverse amines/...

The use of diethyl carbonate as a sustainable solvent for organocatalytic asymmetric transfer hydrogenations of 2-substituted quinolines using highly efficient chiral phosphoric acid catalysts with Hantzsch esters as a hydrogen source is reported for the first time. The asymmetric transfer hydrogenation reaction in diethyl carbonate provides enantiomerically pure 1,2,3,4-tetrahydroquinolines wi...