Study of high harmonics

In the present work, we apply the method suggested in our previous studies to limit the HOR effect on the continuum harmonics by using up-chirped pulses with frequency increasing in time to regulate the high-order harmonic generation of an asymmetric molecule such as CO subjected to a near-infrared laser

12p vispiderman 15-06-2023 7 2   Download

We describe a thorough study of the wave-mixing procedure in the extreme ultraviolet (XUV) region involving three laser fields (800 nm, 1400 nm and 1860 nm). In addition to the phase matched high harmonic generation (HHG) spectrum generated by an 800-nm laser (driving field), non-integer order wave-mixing spectra are produced when the driving field and the control field (1400 nm or 1860 nm) are collinearly focused into krypton gas.

10p vispiderman 15-06-2023 3 2   Download

Fatty acyl-Coenzyme A species (acyl-CoAs) are key biomarkers in studies focusing on cellular energy metabolism. Existing analytical approaches are unable to simultaneously detect the full range of short- , medium-, and long-chain acyl-CoAs, while chromatographic limitations encountered in the analysis of limited amounts of biological samples are an often overlooked problem.

12p viginny 23-12-2022 4 4   Download

In this study, we expand to investigate a more complicated system, H+ 2 molecule in the superposition of the ground and second excited states, exposed to an ultrashort intense laser pulse by numerically solving the time-dependent Schrodinger equation.

12p nguyenxuankha_bevandan 14-08-2020 21 2   Download

In this paper, we study the dependence of even-to-odd ratio on the asymmetric parameters, in particular, the nuclear-charge ratio, and the permanent dipole, by exploiting a simple but general model of asymmetric molecules Z1Z2 subjected to an intense laser pulse. The HHG is simulated by the numerical method of solving the time-dependent Schrodinger equation.

12p nguyenxuankha_bevandan 14-08-2020 24 1   Download

The paper presents the study of high harmonics influence on power metering by static meters for active and reactive energy. The review and analysis of manufacturer’s documents and standards in the field of electricity meters testing was conducted and mathematical models for calculating active and reactive energy were identified.

6p lucastanguyen 01-06-2020 10 1   Download

The Biopharmaceutics Classification System (BCS), based on aqueous solubility and intestinal permeability, has enjoyed wide use since 1995 as a mechanism for waiving in vivo bioavailability and bioequivalence studies. In 2000, the US-FDA was the first regulatory agency to publish guidance for industry describing how to meet criteria for requesting a waiver of in vivo bioavailability and bioequivalence studies for highly soluble, highly permeable (BCS Class I) drugs.

7p caothientrangnguyen 09-05-2020 34 0   Download

Recently, odd-even high-order harmonic generation (HHG) emitted from asymmetric molecules has paid much attention since its application in extracting molecular structures and probing molecular dynamics. In which, the ratio of the even and odd harmonics in HHG spectra is an important quantity characterized the molecular asymmetry. This even-to-odd ratio has been explained by the gerade and ungerade components of the temporal transition dipole. Though, the separating procedure of the temporal transition dipole has not been published in the previous study.

12p 035522894 26-03-2020 40 0   Download

The experimental results show that the protective principle applies not only to the neutral point insulated power supply system, but also to the power supply system in which neutral point passes arc suppression coil, which can solve selective leakage protection problems under different neutral grounding ways, improving the reliability of selective leakage and guaranteeing the stability of the action value.

10p vivalletta2711 11-01-2020 11 1   Download

In this situation the underground structure shall be harmonized with this underground space planning. The major structural issues are stability against uplift force by groundwater and balance of lateral force by earth and water pressure. These engineering issues are studied and their solutions are proposed.

4p viedison2711 03-09-2019 9 3   Download

This book describes high-speed precision motion control technologies which are developed and applied to hard disk drives (HDDs). The first feature of this book is that all the editors and the authors are engineers and professors who are directly engaged in the study and development of HDD servo control. Each author describes the control technologies that he developed, and most of these technologies have already been successfully applied to mass production of HDDs.

315p nguyenthai_thinh 16-03-2013 100 21   Download