IOP SciNotes最新文献_第6页

The impact of process parameters on surface roughness and bushing in friction drilling 摩擦钻孔中工艺参数对表面粗糙度和衬套的影响

IOP SciNotes Pub Date : 2020-10-13 DOI: 10.1088/2633-1357/abc968

Narayana Moorthy N, T. Kanish

引用次数: 1

Stencil growth of metallic nanorod: An atomistic simulation 金属纳米棒的模板生长:原子模拟

IOP SciNotes Pub Date : 2020-10-10 DOI: 10.1088/2633-1357/abd1e3

Movaffaq Kateb

引用次数: 2

The effect of 5f states on the nd → 5f transition energies and spectra of americium ions 5f态对nd的影响→ 镅离子的5f跃迁能和光谱

IOP SciNotes Pub Date : 2020-10-10 DOI: 10.1088/2633-1357/abbd2b

N. J. Dala, Wu Zhong-wen, Ding Xiao-bin, Xie Lu-you, Dong Chen-zhong

引用次数: 0

Synthesis and characterization of barium titanate/polyacrylonitrile nanocomposite for electrochemical sensing of doxorubicin 钛酸钡/聚丙烯腈纳米复合材料的合成与表征

IOP SciNotes Pub Date : 2020-10-08 DOI: 10.1088/2633-1357/abbb15

S. Mehtab, M. Zaidi, Pragati S. Joshi, D. Bawari

引用次数: 1

Investigations on probability of defect detection using differential filtering for pulse compression favourable frequency modulated thermal wave imaging for inspection of glass fibre reinforced polymers 利用脉冲压缩差分滤波对玻璃纤维增强聚合物缺陷检测的可行性研究

IOP SciNotes Pub Date : 2020-10-01 DOI: 10.1088/2633-1357/abb9f2

V. Kher, Ravibabu Mulaveesala, Anju Rani, V. Arora

{"title":"Investigations on probability of defect detection using differential filtering for pulse compression favourable frequency modulated thermal wave imaging for inspection of glass fibre reinforced polymers","authors":"V. Kher, Ravibabu Mulaveesala, Anju Rani, V. Arora","doi":"10.1088/2633-1357/abb9f2","DOIUrl":"https://doi.org/10.1088/2633-1357/abb9f2","url":null,"abstract":"Thermal Non-Destructive Testing and Evaluation (TNDT&E) plays a crucial role in industrial quality control and structural health monitoring of a variety of materials. Among various TNDT&E modalities, active Infrared Thermography (IRT) has emerged as an extremely promising approach and has gained enormous significance due to its quick, whole field, non-contact and quantitative defect detection capabilities. Pulse Compression favourable Thermal Wave Imaging (PCTWI) especially Frequency Modulated Thermal Wave Imaging (FMTWI) has become popular among a number of active IRT techniques because of increment in defect detection sensitivity as well as test resolution. The present work attempts to explore the applicability of differential filtering post processing scheme for pulse compression favourable FMTWI for enhanced detection contrast, resolution and Probability of Detection (PoD). The proposed scheme has been applied on a Glass Fibre Reinforced Polymer (GFRP) sample with sub-surface flat bottom hole (FBH) defects located inside the sample at different depths. The results presented clearly demonstrate that the differential contrast approach enhances the defect detection probabilities by considering maximum and minimum deviation dip values as a figure of merit. Hence, pulse compression favourable FMTWI employing differential filtering manifests higher Probability of Detection (PoD) for defects located at different depths as compared to taking into account the peak Correlation Coefficient (CC) as a statistical figure of merit. Further Probability of Detection (PoD) of the pulse compression favourable FMTWI technique has been improved by differential filtering post-processing based scheme that reduces the memory requirement, computational cost as well as complexity.","PeriodicalId":93771,"journal":{"name":"IOP SciNotes","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42118132","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}

引用次数: 2

Investigating the effect of orientation, infill density with Triple raster pattern on the tensile properties for 3D Printed samples 用三重光栅图案研究取向、填充密度对3D打印样品拉伸性能的影响

IOP SciNotes Pub Date : 2020-09-10 DOI: 10.1088/2633-1357/abb290

S. Kannan, R. Vezhavendhan, S. Kishore, Kamal Varma Kanumuru

引用次数: 4

Monitor unit calculation in electron therapy using Monte Carlo Simulation: a GUI for the phase-space field trimming 用蒙特卡罗模拟的电子治疗监测单元计算:用于相空间场修剪的GUI

IOP SciNotes Pub Date : 2020-09-10 DOI: 10.1088/2633-1357/abb291

T. Sivayogan, J. Chow

引用次数: 0

Electronic structure and vibrational assignments of 2,5-bis[4-(n-cyclobutyldiaminomethyl)phenyl]furan 2,5-双[4-（n-环丁基二氨基甲基）苯基]呋喃的电子结构和振动归属

IOP SciNotes Pub Date : 2020-09-01 DOI: 10.1088/2633-1357/abb2b0

S. Yadav, G. Yadav, U. Yadava

{"title":"Electronic structure and vibrational assignments of 2,5-bis[4-(n-cyclobutyldiaminomethyl)phenyl]furan","authors":"S. Yadav, G. Yadav, U. Yadava","doi":"10.1088/2633-1357/abb2b0","DOIUrl":"https://doi.org/10.1088/2633-1357/abb2b0","url":null,"abstract":"Several DNA minor groove binders exhibit numerous therapeutic applications. The crystal structure demonstrating 2,5-bis[4-(N-cyclobutyldiaminomethyl)phenyl]furan binding within the minor groove of DNA has been reported by Simpson et al (2000 Bioorg. Med. Chem. Lett. 10 2593). In the present study, computational investigations on the title compound have been carried out which comprise geometry optimization, HOMO-LUMO, dipole moment, Molecular electrostatic potential(MEP), thermodynamic parameters, and IR assignments using the B3LYP/6-31G** method. The true minimum was long-established by the nonappearance of negative wavenumbers. A comparison of optimized parameters with crystallographic structure demonstrates slight variations in the conformations of the cyclobutyl groups. A small HOMO-LUMO gap indicates the high chemical reactivity and inter molecule charge transferability. The vibrational spectra of the molecule calculated in 400–3800 cm−1 region, reproduce reliable IR assignments. Bearing in mind the high pharmaceutical significance of minor groove binders and a variety of flexible options accessible for lead optimization will be a bountiful ground for the development of drugs targeting minor grooves.","PeriodicalId":93771,"journal":{"name":"IOP SciNotes","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46100277","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}

引用次数: 1

Measurement and analysis of atmospheric optical turbulence in a near-maritime environment 近海环境下大气光学湍流的测量与分析

IOP SciNotes Pub Date : 2020-09-01 DOI: 10.1088/2633-1357/abba45

Christopher Jellen, C. Nelson, C. Brownell, J. Burkhardt, Miles Oakley

{"title":"Measurement and analysis of atmospheric optical turbulence in a near-maritime environment","authors":"Christopher Jellen, C. Nelson, C. Brownell, J. Burkhardt, Miles Oakley","doi":"10.1088/2633-1357/abba45","DOIUrl":"https://doi.org/10.1088/2633-1357/abba45","url":null,"abstract":"The index of refraction structure constant, Cn2, characterizing the intensity of optical turbulence, describes the disruption of a propagating electromagnetic beam passing through an inhomogeneously heated turbulent environment. In order to improve predictive models, it is critical to develop a deeper understanding of the relationships between environmental parameters and optical turbulence. To that end, an overwater, 890 m scintillometer link was established along the Chesapeake Bay adjacent to the Severn River in Annapolis, Maryland. Specifically, Cn2 data from the scintillometer, as well, as numerous meteorological parameters were collected over the period of approximately 15 months to characterize a scintillometer link in the near-maritime environment. The characteristics of this near-maritime link were distinct from those observed in prior over-land and open ocean links. Further, existing macro-meteorological models for predicting Cn2 from environmental parameters developed for open-ocean links were shown to perform poorly in the near-maritime environment. While the offshore adapted macro-meteorological model demonstrated lower prediction error, this study suggests that new models could be developed to reduce Cn2 prediction error in the near-maritime environment. The complete data set, including Cn2 measurements, and to our knowledge, one of the first to extend beyond one year, is available.","PeriodicalId":93771,"journal":{"name":"IOP SciNotes","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46354391","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}

引用次数: 10

Robust H-infinity control of two novel MEMS force sensors 两种新型MEMS力传感器的鲁棒H∞控制

IOP SciNotes Pub Date : 2020-09-01 DOI: 10.1088/2633-1357/abb933

S. Obilikpa

引用次数: 2