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A model condition for the propagation of ultrashort pulses in optical fiber frameworks could be established through the extensive generalization of the nonlinear Schrödinger equation introduced by Triki and Biswas. This study uses two significant and effective trustworthy methods to examine the Triki–Biswas (TB) equation. Sardar Subequation Methods (SSM) and the generalized Kudryashov (KUD) method generate solutions for trigonometric, hyperbolic, exponential, and rational functions. These approaches are specifically designed for handling solitary wave patterns, dark-singular-mixed solitons, combined dark-bright solitons, singletons, bright solitons, exponential and rational functions, as well as periodic solitons. All of these solution classes contribute to the physical dynamics of outcomes. These findings represent an innovative extension of the soliton domain within the TB model and are being reported for the first time in our investigation. In addition, Mathematica simulations are used to display the 3D and 2D graphs to explain the identified solutions' physical dynamics. [ABSTRACT FROM AUTHOR]

This paper presents a novel Four Quadrant Analog Multiplier (FQAM) circuit and its applications using a single active element Current Differencing Transconductance Amplifier (CDTA) and two NMOS. This circuit has a cascadability feature as it produces current and voltage outputs at high and low impedance ports, respectively. It offers additional features such as resistor-less realization, operability in voltage and trans-conductance mode, and configurable structure. Further, the FQAM circuit is configured to develop a memristor emulator based on the proposed mathematical analogy. The proposed memristor circuit contains active elements (one CDTA, two NMOS, and one Inverting Voltage buffer) and only one grounded capacitor. It offers tunability using the transconductance gain of the CDTA block. Also, the proposed memristor emulator circuit doesn't contain any additional multiplier block. The emulator circuit can be operated in both the Incremental and the Decremental mode of memristance variation. The results demonstrate the non-volatile property as well as hysteresis behavior for the wide frequency range. The effects of statistical variation in passive component, threshold voltage, and aspect ratios on the proposed circuits using Monte-Carlo simulation have been estimated. Also, the impact of non-idealities and the parasitic effects of the CDTA on the proposed circuits are investigated. In last, the capacitor-less version of the memristor emulator and its hysteresis characteristics have been demonstrated. The simulation results obtained using HSPICE, are agreed well with the theoretical analysis. [ABSTRACT FROM AUTHOR]

Metal nitrates are widely used as oxidizers and in light-producing compositions in both civilian and military explosive applications. In this work we have explored the isomorphous divalent metal nitrates M(NO 3 ) 2 (M = Sr, Ba) by using dispersion-corrected density functional theory methods. The equilibrium results calculated with Grimme (G06) (for Sr(NO 3 ) 2 ) and Ortmann-Bechstedt-Schmidt (for Ba(NO 3 ) 2 ) functionals reproduced the experimental lattice parameters. We present the effect of cations on the lattice dynamical properties conjointly with their elastic and thermodynamic properties. The linear response approach within density functional perturbation theory was used to calculate the zone-center vibrational frequencies, phonon dispersion relation, and phonon density of states. The infrared spectrum of these compounds in their fundamental state is studied in the whole 0–1500 cm −1 range, and is critically analyzed in the light of previous experimental investigations. We observed that most of the high-frequency vibrational modes emerge because of the NO 3 group. The calculated phonon dispersion curves do not show any vibrational anomaly, confirming the dynamical stability of the compounds in the cubic ( P a 3 ¯ ) phase. The calculated shear anisotropic factors of 1.8 and 2.1 for Sr(NO 3 ) 2 and Ba(NO 3 ) 2 , respectively, indicate that both crystals studied possess considerable mechanical anisotropy. As the thermal behavior of these materials could play a key role in the growth of sustainable smoke compositions, thermodynamic properties such as the entropy, Debye temperature, heat capacity, and enthalpy were calculated. The results reveal that the compounds are thermodynamically stable up to 750 K. This work demonstrates that Sr(NO) 2 and Ba(NO 3 ) 2 can be reliably used in pyrotechnics as they possess considerable thermal conductivity, leading to a high burn rate. The results presented in this work could open a way to understand the lattice dynamics of materials of this type and could provide necessary input from the pyrotechnic applicability point of view, which would help experimental researchers in the future. [ABSTRACT FROM AUTHOR]

A patient at her 38+ wks of pregnancy as a ultrasonographically diagnosed case of conjoined twin admitted in our department with ruptured membrane. Two live female babies joined at the chest were delivered by caesarean section. The parents refused a separation operation and the mother and the babies were discharged from hospital at 6th post natal day. A review of the literature suggests that early diagnosis by a combination of ultrasound and MRI is essential for management as it provides prognosis for viability and process of surgical separation and also the opportunity for early counseling of parents and termination if indicated. [ABSTRACT FROM AUTHOR]

An operational transconductance amplifier (OTA)-based good quality, wide-range electronically tunable module for resistance and capacitance multipliers has been realized. Its multiplication factors are conveniently tunable with the bias-control current or voltage of the OTA over three decades. The module with slight modifications realizes temperature-insensitive multipliers. The circuit is very suitable for microminiaturization and is expected to find wide practical applications. Experimental results are also included. [ABSTRACT FROM AUTHOR]

Our objectives were to describe the congenital fetal anomalies (CFA) detected during prenatal advanced level II ultrasound and validate the findings at birth. During the prenatal advanced level II US, CFA was seen, 47% in the central nervous system (CNS), 24% in the urinary system, 12% in the gastrointestinal system, 7% in cardiac, 5% in musculoskeletal, 3% in facial and 2% in the pulmonary system. Advanced level II US in our series not only could predict the fetal outcome but also aided in planning intrapartum management of fetus as well as the postpartum neonatal management strategy. [Extracted from the article]