Fatima M. Ali, Mushtaq Abed Al-Jubbori, R. Alkhayat
Interacting Boson Model (IBM-1), Semi Empirical Formula (SEF), and New Empirical Equation (NEE) methods were utilized to determine the energy states of the ground-state (GS), β and γ-bands in the 170-180Os isotopes. The results of the study on the GS, β, and γ bands suggest that IBM-1, SEF, NEE, and existing empirical evidence show some agreement, albeit with some discrepancies. The NEE results for GS, β, and γ bands are more reliable with empirical data than the estimates derived from the IBM-1 and SEF models. The reduced transition probabilities B(E2) of the IBM-1 model correspond well to the experimental data. In the GSB, the energies of the 6+, 8+, and 10+ states are not precisely modeled in the IBM-1 model. The R4/2 values of low-lying energy levels of Os isotopes fluctuate gradually with increasing neutron numbers. The EPS counter indicates that the transition limit of the 170-180Os isotopes has a rotational–vibrational γ-soft transition.
{"title":"INVESTIGATION OF THE NUCLEAR STRUCTURE OF THE ISOTOPES 170−180Os","authors":"Fatima M. Ali, Mushtaq Abed Al-Jubbori, R. Alkhayat","doi":"10.15446/mo.n68.109589","DOIUrl":"https://doi.org/10.15446/mo.n68.109589","url":null,"abstract":"Interacting Boson Model (IBM-1), Semi Empirical Formula (SEF), and New Empirical Equation (NEE) methods were utilized to determine the energy states of the ground-state (GS), β and γ-bands in the 170-180Os isotopes. The results of the study on the GS, β, and γ bands suggest that IBM-1, SEF, NEE, and existing empirical evidence show some agreement, albeit with some discrepancies. The NEE results for GS, β, and γ bands are more reliable with empirical data than the estimates derived from the IBM-1 and SEF models. The reduced transition probabilities B(E2) of the IBM-1 model correspond well to the experimental data. In the GSB, the energies of the 6+, 8+, and 10+ states are not precisely modeled in the IBM-1 model. The R4/2 values of low-lying energy levels of Os isotopes fluctuate gradually with increasing neutron numbers. The EPS counter indicates that the transition limit of the 170-180Os isotopes has a rotational–vibrational γ-soft transition.","PeriodicalId":512999,"journal":{"name":"MOMENTO","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140514523","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
S. Urcia-Romero, H. Vigo-Cotrina, Segundo R. Jáuregui-Rosas
Permalloy can exhibit magnetic vortex configurations depending on their dimensions and geometry, being of great interest due to potential applications in data storage and for cancer treatment. This work focuses on the effects of perpendicular uniaxial anisotropy, dimensions of permalloy nanodisks, and magnetostatic interactions on the annihilation and nucleation fields of magnetic vortices by means of micromagnetic simulations. Nanodisks with different diameters were evaluated, considering the effect of anisotropy generated by a platinum substrate for isolated nanodisks of 20 nm thickness. The effect of magnetostatic interactions for different arrays of identical nanodisks and a 10 x 10 array with random diameters from a normal distribution was also evaluated. The results show that the annihilation and nucleation fields are influenced by the perpendicular uniaxial anisotropy. The higher the anisotropy, the more the annihilation field decreases, and the nucleation field increases, thus favoring the monodomain magnetic configuration. It was also shown that the magnetic interaction between the nanodisks and the lattice geometry led to a variation of the annihilation and nucleation fields. The magnetostatic interaction in the lattice leads to a collective rotation of the magnetic moments, so that the closing of the magnetic flux occurs randomly in a series of nanodisks minimizing the energy.
根据尺寸和几何形状的不同，坡莫合金可呈现出磁涡旋构型，由于其在数据存储和癌症治疗方面的潜在应用而备受关注。这项工作的重点是通过微磁模拟，研究垂直单轴各向异性、坡莫合金纳米盘的尺寸以及磁静电相互作用对磁涡旋湮灭和成核场的影响。对不同直径的纳米盘进行了评估，考虑了铂基底对 20 nm 厚度的孤立纳米盘产生的各向异性的影响。此外，还评估了由相同纳米盘组成的不同阵列以及由正态分布随机直径组成的 10 x 10 阵列的磁静电相互作用效应。结果表明，湮灭场和成核场受到垂直单轴各向异性的影响。各向异性越大，湮没场越小，成核场越大，从而有利于单域磁配置。研究还表明，纳米磁盘与晶格几何形状之间的磁相互作用导致了湮灭场和成核场的变化。晶格中的磁静电相互作用导致磁矩的集体旋转，从而使磁通量的闭合在一系列纳米盘中随机发生，使能量最小化。
{"title":"INFLUENCE OF DIMENSION AND MAGNETIC INTERACTIONS ON ANNIHILATION AND NUCLEATION FIELDS OF PERMALLOY NANODISKS USING MICROMAGNETIC SIMULATIONS","authors":"S. Urcia-Romero, H. Vigo-Cotrina, Segundo R. Jáuregui-Rosas","doi":"10.15446/mo.n68.110938","DOIUrl":"https://doi.org/10.15446/mo.n68.110938","url":null,"abstract":"Permalloy can exhibit magnetic vortex configurations depending on their dimensions and geometry, being of great interest due to potential applications in data storage and for cancer treatment. This work focuses on the effects of perpendicular uniaxial anisotropy, dimensions of permalloy nanodisks, and magnetostatic interactions on the annihilation and nucleation fields of magnetic vortices by means of micromagnetic simulations. Nanodisks with different diameters were evaluated, considering the effect of anisotropy generated by a platinum substrate for isolated nanodisks of 20 nm thickness. The effect of magnetostatic interactions for different arrays of identical nanodisks and a 10 x 10 array with random diameters from a normal distribution was also evaluated. The results show that the annihilation and nucleation fields are influenced by the perpendicular uniaxial anisotropy. The higher the anisotropy, the more the annihilation field decreases, and the nucleation field increases, thus favoring the monodomain magnetic configuration. It was also shown that the magnetic interaction between the nanodisks and the lattice geometry led to a variation of the annihilation and nucleation fields. The magnetostatic interaction in the lattice leads to a collective rotation of the magnetic moments, so that the closing of the magnetic flux occurs randomly in a series of nanodisks minimizing the energy.","PeriodicalId":512999,"journal":{"name":"MOMENTO","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140514858","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Ramya, S. Natarajan, A. Nithya, M. S. Sarala, S. Karuppuchamy
The Bharatanatyam dance requires excellent coherency and precision from the performer. In order to calibrate and gauge the physical moments of the performer, we propose a Raspberry Pi based sensor. Using the data obtained from the prototype, the classical Bharatanatyam dance movements of a performer have been sensed and analyzed. Based on the results, suggestions to improve the performance of Bharatanatyam are reported.
印度婆罗达那提亚舞蹈要求表演者具有出色的连贯性和精确性。为了校准和测量表演者的身体状态，我们提出了一种基于 Raspberry Pi 的传感器。利用从原型获得的数据，我们对表演者的古典印度板式舞蹈动作进行了感应和分析。根据分析结果，我们提出了改进印度婆罗陀那提亚舞表演的建议。
{"title":"EVALUATION OF VARIOUS PARAMETERS OF NATTADAVU IN BHARATANATYAM USING A RASPBERRY Pi-BASED SENSOR","authors":"A. Ramya, S. Natarajan, A. Nithya, M. S. Sarala, S. Karuppuchamy","doi":"10.15446/mo.n68.110342","DOIUrl":"https://doi.org/10.15446/mo.n68.110342","url":null,"abstract":"The Bharatanatyam dance requires excellent coherency and precision from the performer. In order to calibrate and gauge the physical moments of the performer, we propose a Raspberry Pi based sensor. Using the data obtained from the prototype, the classical Bharatanatyam dance movements of a performer have been sensed and analyzed. Based on the results, suggestions to improve the performance of Bharatanatyam are reported.","PeriodicalId":512999,"journal":{"name":"MOMENTO","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140514936","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This article presents a study of fusion-evaporation nuclear reactions. Starting from a detailed description of the semi-classical theoretical framework behind this nuclear reaction, quantities such as the cross section of compound nucleus formation and various evaporation residues after its formation, as well as their cross sections (proportional to the events number), were estimated by means of a Python code. The code splits the compound nucleus formation process and its subsequent decay into several residual nuclei, which occurs as a sequential particle emission. In order to prioritize a first approximation theory, different nuclear models, with semi-classical and statistical origin, related to projectile-target fusion, light particle evaporation (n, p, α) and fission, were described in detail. The values obtained with the computational routine developed were compared with experimental values and results from the PACE code. Cross sections were calculated for about 90 proposed reactions that produce residues with excess protons. In general, the results obtained show significant discrepancies, especially in heavy nuclei reactions, although some agreements are found even taking into account the limitations of the code. The main reason for this discrepancy may be associated with the lack or overestimation of some channels which may affect the proportion of events. This motivates a more sophisticated analysis in the future that could allow a wider range of channels.
{"title":"CROSS SECTION ESTIMATION FOR HEAVY ION NUCLEAR REACTIONS WITH A CASCADE CODE OF FUSION EVAPORATION","authors":"Daniel Castiblanco","doi":"10.15446/mo.n68.106810","DOIUrl":"https://doi.org/10.15446/mo.n68.106810","url":null,"abstract":"This article presents a study of fusion-evaporation nuclear reactions. Starting from a detailed description of the semi-classical theoretical framework behind this nuclear reaction, quantities such as the cross section of compound nucleus formation and various evaporation residues after its formation, as well as their cross sections (proportional to the events number), were estimated by means of a Python code. The code splits the compound nucleus formation process and its subsequent decay into several residual nuclei, which occurs as a sequential particle emission. In order to prioritize a first approximation theory, different nuclear models, with semi-classical and statistical origin, related to projectile-target fusion, light particle evaporation (n, p, α) and fission, were described in detail.\u0000The values obtained with the computational routine developed were compared with experimental values and results from the PACE code. Cross sections were calculated for about 90 proposed reactions that produce residues with excess protons. In general, the results obtained show significant discrepancies, especially in heavy nuclei reactions, although some agreements are found even taking into account the limitations of the code. The main reason for this discrepancy may be associated with the lack or overestimation of some channels which may affect the proportion of events. This motivates a more sophisticated analysis in the future that could allow a wider range of channels.","PeriodicalId":512999,"journal":{"name":"MOMENTO","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140515213","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The world is gradually shifting from the over-reliance on fossil fuel energy to the discoveries, development, and use of various forms of renewable energy. One advancement is towards the use of Microbial Fuel Cells (MFCs). This is a bioreactor that makes use of microbial activity present in the organic substance in an electrochemical system to generate electricity. In this research, raw honey was utilized as the fuel source for fabricating a double-chambered MFC device using clay partitions. Six dilutions of the raw honey were made into Cell 1 (2 %), Cell 2 (5 %), Cell 3 (20 %), Cell 4 (40 %), Cell 5 (60 %), and Cell 6 (80 %). After fourteen days with two experiments carried out, the maximum current densities obtained were 270.2 mA/m2, 583.7 mA/m2, 654.0 mA/m2, 351.3 mA/m2, 140.5 mA/m2, 64.8 mA/m2, with the corresponding maximum power densities of 99.2 W/m2, 215 W/m2, 247.0 W/m2, 123.1 W/m2, 49.8 W/m2, 22.5 W/m2 for Cell 1, Cell 2, Cell 3, Cell 4, Cell 5, and Cell 6, respectively. It was determined that raw honey that
{"title":"INVESTIGATION AND V-I CHARACTERISTICS OF SUBSTRATE FOR MFC: CASE STUDY OF RAW HONEY","authors":"Matilda Kpeli, M. Donkor, F. Ampong, R. Tamakloe","doi":"10.15446/mo.n68.110493","DOIUrl":"https://doi.org/10.15446/mo.n68.110493","url":null,"abstract":"The world is gradually shifting from the over-reliance on fossil fuel energy to the discoveries, development, and use of various forms of renewable energy. One advancement is towards the use of Microbial Fuel Cells (MFCs). This is a bioreactor that makes use of microbial activity present in the organic substance in an electrochemical system to generate electricity. In this research, raw honey was utilized as the fuel source for fabricating a double-chambered MFC device using clay partitions. Six dilutions of the raw honey were made into Cell 1 (2 %), Cell 2 (5 %), Cell 3 (20 %), Cell 4 (40 %), Cell 5 (60 %), and Cell 6 (80 %). After fourteen days with two experiments carried out, the maximum current densities obtained were 270.2 mA/m2, 583.7 mA/m2, 654.0 mA/m2, 351.3 mA/m2, 140.5 mA/m2, 64.8 mA/m2, with the corresponding maximum power densities of 99.2 W/m2, 215 W/m2, 247.0 W/m2, 123.1 W/m2, 49.8 W/m2, 22.5 W/m2 for Cell 1, Cell 2, Cell 3, Cell 4, Cell 5, and Cell 6, respectively. It was determined that raw honey that","PeriodicalId":512999,"journal":{"name":"MOMENTO","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140515428","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Nano-heterostructures (NHs) are drawing attention due to their fascinating properties as materials for constructing nano-electronic devices. CdS and CuAlO2 were prepared using the co-precipitation method and deposited, respectively, on Indium Tin Oxide (ITO) substrate to study their characteristics and effectiveness for light-emitting diode (LED) applications and photodetectors. Investigations were made on the morphological, optical, and electrical characteristics. According to the X-ray diffraction pattern, CdS nanoparticles have a cubic phase structure and diffraction peaks at 26.3◦, 43.8◦, and 51.8◦. UV-visible optical studies were used to characterize the absorbance of CdS, CuAlO2, and CdS/CuAlO2/ITO with redshift around 400 nm for the nanoparticles. Using the Tauc plot, the band gap energy of the prepared heterostructure showed a value of 3.1eV. The Scanning Electron Microscopy (FESEM) images show homogeneous morphology with little agglomeration. I-V characterization reveals good properties with high forward current power. CdS/CuAlO2/ITO shows high responsivity of 0.45 A/W, which indicates a straightforward, low-cost, and effective fabrication technique for the fabrication of light-emitting diodes and a promising heterostructure for manufacturing photo detectors.
{"title":"SYNTHESIS AND CHARACTERIZATION OF CdS/CuAlO2/ITO NANO HETEREOSTRUCTURE NOVEL LED FOR OPTOELECTRONIC APPLICATIONS","authors":"Z. N. Abdul-Ameer","doi":"10.15446/mo.n68.110999","DOIUrl":"https://doi.org/10.15446/mo.n68.110999","url":null,"abstract":"Nano-heterostructures (NHs) are drawing attention due to their fascinating properties as materials for constructing nano-electronic devices. CdS and CuAlO2 were prepared using the co-precipitation method and deposited, respectively, on Indium Tin Oxide (ITO) substrate to study their characteristics and effectiveness for light-emitting diode (LED) applications and photodetectors. Investigations were made on the morphological, optical, and electrical characteristics. According to the X-ray diffraction pattern, CdS nanoparticles have a cubic phase structure and diffraction peaks at 26.3◦, 43.8◦, and 51.8◦. UV-visible optical studies were used to characterize the absorbance of CdS, CuAlO2, and CdS/CuAlO2/ITO with redshift around 400 nm for the nanoparticles. Using the Tauc plot, the band gap energy of the prepared heterostructure showed a value of 3.1eV. The Scanning Electron Microscopy (FESEM) images show homogeneous morphology with little agglomeration. I-V characterization reveals good properties with high forward current power. CdS/CuAlO2/ITO shows high responsivity of 0.45 A/W, which indicates a straightforward, low-cost, and effective fabrication technique for the fabrication of light-emitting diodes and a promising heterostructure for manufacturing photo detectors.","PeriodicalId":512999,"journal":{"name":"MOMENTO","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140515082","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Marcial V. Vasquez, Héctor R. Vega, Santos L. Acuña, Huber E. Rodriguez, Marcela A. Vasquez, Hipólito F. Flores, Santos M. Tantaquispe
Absorbed doses to the kidneys of adult patients are estimated using the Medical Internal Radiation Dosimetry (MIRD) methodology and the anthropomorphic representations of Snyder, Cristy-Eckerman, and Segars. The radiopharmaceuticals 99mTc(DTPA), 99mTc(DMSA) and 99mTc(MAG3) are used to perform renal function studies in adults. The dose results found for these radiopharmaceuticals and their representations will allow the exploring of their dosimetric impact on each other. The relative difference in total renal dose by using the Snyder/Segars and Cristy-Eckerman/Segars anthropomorphic-representations was 3.6% and 0.3% when using 99mTc(DMSA); 2.9% and 3.0% when using 99mTc(MAG3); 5.0% and 1.5% when using 99mTc(DTPA). Regardless of the radiopharmaceutical selected, the substitution of Segars phantoms for Snyder or Cristy-Eckerman phantoms does not reflect significant changes in the estimated absorbed dose to the kidneys.
{"title":"RADIOPHARMACEUTICAL RENAL DOSIMETRY USING SNYDER / CRISTY-ECKERMAN / SEGARS ANTHROPOMORPHIC REPRESENTATIONS","authors":"Marcial V. Vasquez, Héctor R. Vega, Santos L. Acuña, Huber E. Rodriguez, Marcela A. Vasquez, Hipólito F. Flores, Santos M. Tantaquispe","doi":"10.15446/mo.n68.102552","DOIUrl":"https://doi.org/10.15446/mo.n68.102552","url":null,"abstract":"Absorbed doses to the kidneys of adult patients are estimated using the Medical Internal Radiation Dosimetry (MIRD) methodology and the anthropomorphic representations of Snyder, Cristy-Eckerman, and Segars. The radiopharmaceuticals 99mTc(DTPA), 99mTc(DMSA) and 99mTc(MAG3) are used to perform renal function studies in adults. The dose results found for these radiopharmaceuticals and their representations will allow the exploring of their dosimetric impact on each other. The relative difference in total renal dose by using the Snyder/Segars and Cristy-Eckerman/Segars anthropomorphic-representations was 3.6% and 0.3% when using 99mTc(DMSA); 2.9% and 3.0% when using 99mTc(MAG3); 5.0% and 1.5% when using 99mTc(DTPA). Regardless of the radiopharmaceutical selected, the substitution of Segars phantoms for Snyder or Cristy-Eckerman phantoms does not reflect significant changes in the estimated absorbed dose to the kidneys. ","PeriodicalId":512999,"journal":{"name":"MOMENTO","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140515249","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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