Global Primordialities

Modal decomposition method for response spectrum based analysis of nonlinear and non-classically damped systems

“…These observations concerning systems that have not entered into the inelastic range yet are in perfect alignment with pertinent numerical results reported in the literature (e.g. [2,8]). Table 1.…”

“…Modal decomposition method has been developed over the last five decades for conducting response analysis of dynamically excited linear systems, and the available tools today are mature and accessible by engineers of practice (e.g. [1,2]). However, when it is expected that the vibratory system will be excited in the nonlinear range, the linearity framework should be abandoned in favor of a nonlinear modal analysis.…”

“…Comparing to the state of the art schemes available in the literature, the proposed stochastic dynamics technique exhibits a number of noteworthy attributes such as: (i) it accounts for nonlinear and MDOF structural systems, following aseismic code-prescribed criteria which dictate a ductile behavior under the design seismic action, (ii) it considers for non-classically damped systems which represent the majority of systems of engineering interest (e.g., [2,13]), (iii) it is tailored to facilitate code-compliant seismic demand estimation using linear UHS along with the well-established concept of damping modification factors to specify the seismic input action and aims to relax heuristic approximating assumptions made by current codeprescriptive simplified methods, (iv) it is considerably less computationally demanding compared to nonlinear RHA for UHS compatible ground motion records, (v) it furnishes with forced vibrational modal properties which offer a solid basis for interpreting the underlying structural dynamics. The efficient identification of the dynamic character of the system cannot be determined following nonlinear RHA.…”

Conjugated Polymer Nanoparticles with Ag+‐Sensitive Fluorescence Emission: A New Insight into the Cooperative Recognition Mechanism

“…Poly [2,[7][8][9]] (PFO) : M1 (1 mmol) and M2 (1 mmol) were used in this copolymerization. Yield: 667 mg, 86%.…”

“…For instance, it is believed that silver ions can bind with various metabolites and enzymes and can inactivate sulfhydryl enzymes . Moreover, silver ions may accumulate in liver tissues and exert adverse effect on patients with overuse medication containing silver salts . Taking this, detection of silver ions with high selectivity in aqueous milieu and biological samples is of great importance.…”