Nonlinear optical absorption via two-photon process in asymmetrical Gaussian potential quantum wells

Phuc, Huynh V.; Tung, Luong V.; Vinh, Pham T.; Đình, Lê

doi:10.1016/j.spmi.2014.11.024

Cited by 19 publications

(5 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The age group 25 -50 had the highest Toxocara infection rate at 55.78%, while the age group under 25 years old had the lowest infection rate at 6.94%. This result aligns with the ndings of Le Dinh Vinh Phuc's study (2021) 3 . However, it diers from the results of Coelho LMPS and Silva MV (2004) 6 , where the infection rate in children under 18 years old in Sorocala city, Sao Paulo state, Brazil, was reported as 38.30%.…”

Section: Association Of Age Groups and Toxocara Infectionsupporting

confidence: 92%

“…The results showed that the Toxocariasis infection rate was higher in females (55.51%) and a little lower in males( 50.68% ). This indicates that the results were nearly equal to those in Le Dinh Vinh Phuc's study (2021) 3 , where the rates were reported as 62.50% for females and 37.50% for males. Likewise, the results were also similar to those of Cao Van Huyen's study (2018) 4 , where the infection rates were 52.70% for males and 47.30% for females.…”

Section: Association Of Age Groups and Toxocara Infectionsupporting

confidence: 65%

See 1 more Smart Citation

SEROPREVALENCE OF IgG ANTIBODIES OF HUMAN TOXOCARIASIS AND ASOCIATED RISK FACTORS IN KHANH HOA PROVINCE

Nguyen,

Le,

Nguyen

et al. 2023

vjid

View full text Add to dashboard Cite

Background: Human toxocariasis is a zoonotic parasitic disease caused by Toxocara canis and T. cati roundworm larvae. While many studies have shown that dog and cat owners are at a higher risk of acquiring Toxocara spp. infection, there is no available evidence regarding the seroprevalence of Toxocara spp. infection among dog and cat owners in Khanh Hoa. Therefore, this study aims to investigate the prevalence of anti-IgG of Toxocara spp. infection and associated risk factors for visceral larval migrans among dog owners in three different areas of Khanh Hoa province..Subjects and methods: A descriptive cross-sectional study was conducted from 2022 to 2024 in three localities representing different socio-geographic areas (urban, rural, and mountainous) of Khanh Hoa province. A total of 1502 blood samples were collected from local individuals aged 5 to 75 for this study. Serum anti-T.canis IgG antibodies were detected using a commercial enzyme-linked immunosorbent assay (ELISA) kit: NovaLisaTM, Toxocara canis IgG ELISA. Simultaneously, a survey using structured questionnaire about information on risk factors associated with Toxocariasis was conducted among 720 people (aged 18 and over) from 1,502 individuals whose bloods were taken for testing.Results and conclusions: A total of 1,502 blood samples were examined for the presence of antibodies to dog and cat roundworm larval infection. Results revealed an overall positive rate of 57.66% across the three localities, with variations depending on geography. In Khanh Vinh, a mountainous district, the infection rate was 75.44%, and in its commune Khanh Trung, it was 81.20%. For the two urban wards, the rates were significantly lower (Phuoc Long Ward: 44.40% and Van Thanh Ward: 54.18%). A structured questionnaire was used to investigate risk factors among 720 individuals (aged 18 years old and over) out of the 1,502 individuals whose bloods were tested. Results indicated that 389 of them tested positive for the ELISA test. Infection rates varied among age groups: under 25 years old (6.94%), 25-50 years old (66.78%), and over 50 years old (37.28%). Notably, 49.87% of infected individuals owned dogs or cats, 93.32% regularly consumed raw vegetables, and 25.71% frequently handled dogs or cats. The high infection rate of dog and cat roundworm larvae in Khanh Hoa underscores the presence of several identified high-risk factors.

show abstract

Section: Association Of Age Groups and Toxocara Infectionsupporting

confidence: 92%

Section: Association Of Age Groups and Toxocara Infectionsupporting

confidence: 65%

SEROPREVALENCE OF IgG ANTIBODIES OF HUMAN TOXOCARIASIS AND ASOCIATED RISK FACTORS IN KHANH HOA PROVINCE

Nguyen,

Le,

Nguyen

et al. 2023

vjid

View full text Add to dashboard Cite

show abstract

“…p and r are momentum and position vectors for electrons, respectively. V(z) is the AGCP along the z direction representing the AGCPQW growth direction [22][23][24], V 0 is the AGCPQW barrier height, R is the AGCP range, and η is the Coulombic impurity potential strength that satisfies η = e 2 /ε 0 . In addition, the decay magnetic field shown in Figure 2 can be expressed as…”

Section: Theoretical Methodsmentioning

confidence: 99%

“…is the AGCP along the z direction representing the AGCPQW growth direction [22][23][24], 0 V is the AGCPQW barrier height, R is the AGCP range, and η is the Coulombic impurity potential strength that satisfies…”

Section: Theoretical Methodsmentioning

confidence: 99%

The Impurity and Decay-Magnetic Polaron Effects in III–V Compound Gaussian Quantum Wells

Zhang

et al. 2022

Coatings

View full text Add to dashboard Cite

The effects of a decay magnetic field and hydrogen-like impurities on the ground-state binding energy (GSBE) and ground-state energy (GSE) of weak-coupling bound polarons in asymmetrical Gaussian potential (AGP) III–V compound quantum wells (QWs) were studied based on unitary transformation methods and linear combination operators. By numerical calculation, we found that the polarons were affected by the AGP, the decay magnetic field, Coulomb impurities, and the type of crystal, which led to a series of interesting phenomena, such as changes in the ground-state energy and the ground-state binding energy. The results obtained provide good theoretical guidance for optoelectronic devices and quantum information.

show abstract

“…Simultaneously, with the technological progresses in the fabrication of semiconductor structures like Molecular Beam Epitaxy and Metal Organic Chemical Vapor Deposition [5,6,7,8], it has been made possible to fabricate variety of nanosized structures, such as quantum dot, quantum well (QW) and quantum wire. In particular, the semiconductor QW owing to their unique larger-band-gap are attractive both for fundamental research and applications in optoelectronics devices [9,10,11,12].…”

Section: Introductionmentioning

confidence: 99%

Effect of Conduction Band Non-Parabolicity on the Nonlinear Optical Properties in GaAs/Ga1−xAlxAs Double Semi-V-shaped Quantum Wells

et al. 2018

View full text Add to dashboard Cite

In this paper, we investigate the effect of conduction band non-parabolicity (NPBE) on the third harmonic generation(THG), the linear and nonlinear intersub-band optical absorption coefficients (OACs) related with electronic states of double semi-V-shaped GaAs/Ga1−xAlxAs quantum wells(QWs) by using the compact-density-matrix approach. Simultaneously, the work is performed in the position dependent effective mass in order to compute the electronic structure for the system by the finite difference and self-consistent techniques. We also compare the results with and without considering NPBE. It is found that: (1) the NPBE has a significant influence on the sub-band energy levels of double semi-V-shaped QWs, and (2) the amplitude and position of the resonant peaks of the THG and nonlinear OACs in the case of considering NPBE show complicated behavior due to the energy dependent effective mass m*(E) where the energy value was chosen self-consistently.

show abstract

Nonlinear optical absorption via two-photon process in asymmetrical Gaussian potential quantum wells

Cited by 19 publications

References 45 publications

SEROPREVALENCE OF IgG ANTIBODIES OF HUMAN TOXOCARIASIS AND ASOCIATED RISK FACTORS IN KHANH HOA PROVINCE

SEROPREVALENCE OF IgG ANTIBODIES OF HUMAN TOXOCARIASIS AND ASOCIATED RISK FACTORS IN KHANH HOA PROVINCE

The Impurity and Decay-Magnetic Polaron Effects in III–V Compound Gaussian Quantum Wells

Effect of Conduction Band Non-Parabolicity on the Nonlinear Optical Properties in GaAs/Ga1−xAlxAs Double Semi-V-shaped Quantum Wells

Contact Info

Product

Resources

About