IOP SciNotes最新文献_第2页

Tomography analysis tool: an application for image analysis based on unsupervised machine learning 层析成像分析工具：一种基于无监督机器学习的图像分析应用

IOP SciNotes Pub Date : 2022-02-14 DOI: 10.1088/2633-1357/ac54bf

T. Bagni, H. Haldi, D. Mauro, C. Senatore

引用次数: 3

Locations of L 4,5 of a dust grain type II comet tail in Solar-Jupiter system in the photogravitational relativistic R3BP 照相相对论R3BP中太阳-木星系尘埃粒II型彗尾L4,5的位置

IOP SciNotes Pub Date : 2021-10-05 DOI: 10.1088/2633-1357/ac27fd

Nakone Bello, Umar Aishetu, Aminu Abubakar Hussain

引用次数: 0

Derivation of an improved semi-empirical expression for the re-ionisation background in low energy ion scattering spectra 低能离子散射光谱中再电离背景的改进半经验表达式的推导

IOP SciNotes Pub Date : 2021-09-01 DOI: 10.1088/2633-1357/ac25e8

H. Koslowski, C. Linsmeier

引用次数: 0

Novel bismuth oxy hydride chromate (HBi3(CrO4)O3) nano-sheets/rods synthesized by one step one pot wet chemical method 一步一锅湿化学法合成新型氧氢化铬酸铋(HBi3(CrO4)O3)纳米片/棒

IOP SciNotes Pub Date : 2021-06-03 DOI: 10.1088/2633-1357/abf634

Channegowda Manjunatha

{"title":"Novel bismuth oxy hydride chromate (HBi3(CrO4)O3) nano-sheets/rods synthesized by one step one pot wet chemical method","authors":"Channegowda Manjunatha","doi":"10.1088/2633-1357/abf634","DOIUrl":"https://doi.org/10.1088/2633-1357/abf634","url":null,"abstract":"A novel inorganic hydride material, hydrogen bismuth chromium oxide (HBi3(CrO4)O3), with 2D nano sheets and 1D nanorods were prepared for the first time using a simple, green, hazard free hydrothermal method. The X-ray diffraction (XRD) results confirms that the as-formed sample (HBi3(CrO4)O3) has monoclinic crystal system with a space group of P21/a. The field emission scanning electron microscope (FESEM) analysis clearly reveal that the new material contains large quantity of 2D nanosheets of thickness <10 nm and spread over >1000 nm and with small amounts of micro-rods of width in the range of 1 to 5 μm and lengths in the range of 40 to 100 μm. The EDS analysis confirms the presence of ‘Bi’, ‘Cr’, and ‘O’ and it further evidences the purity of the sample. The fourier transform infra-red (FT-IR) spectra evidences that the sample has Bi-H, Bi-O and Cr-O bonds as expected for HBi3(CrO4)O3. This material has a potential to find its place in hydrogen storage material, photo/electro catalysis, fuel cells, optoelectronics and rechargeable batteries, therefore it needs materials researcher attention immediately.","PeriodicalId":93771,"journal":{"name":"IOP SciNotes","volume":"97 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138509401","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: 0

Existing seasonal flexibility in US manufacturing energy use 美国制造业能源使用的现有季节性灵活性

IOP SciNotes Pub Date : 2021-05-24 DOI: 10.1088/2633-1357/ac049b

John Lydon, Rebecca E. Ciez

{"title":"Existing seasonal flexibility in US manufacturing energy use","authors":"John Lydon, Rebecca E. Ciez","doi":"10.1088/2633-1357/ac049b","DOIUrl":"https://doi.org/10.1088/2633-1357/ac049b","url":null,"abstract":"Renewable electricity will likely play a substantial role in a decarbonized energy system, and there are well-known seasonal patterns to renewable electricity output. We can manage these seasonal fluctuations by overbuilding our electricity generation capacity, implementing seasonal storage, or managing our energy demands seasonally. If industrial processes are more integrated with the broader energy system, they could play a role in managing these seasonal patterns, as they do not directly serve life-sustaining energy demands, and their products may be stored and sold at a later date. Here, we combine GDP, manufacturing, and energy consumption data to look at how existing manufacturing facilities operate, focusing on the utilization of their operating capacity and how utilization correlates with state-level energy consumption. Of the 12 states with the largest manufacturing energy demand, we find that they use an average of 75%–81% of operating capacity between 2014–2018. In most of these states, there is a positive relationship between energy consumption and capacity utilization, and decreasing 10% of manufacturing capacity utilization could translate into energy savings that are relatively large when compared to electricity sales for the same time period, implying that seasonal ramping of industrial production could play a substantial role in adjusting to seasonal energy trends.","PeriodicalId":93771,"journal":{"name":"IOP SciNotes","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44491883","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

Pulse compression favorable frequency modulated thermal wave imaging for non-destructive testing and evaluation: an analytical study 脉冲压缩有利的频率调制热波成像无损检测和评价:分析研究

IOP SciNotes Pub Date : 2021-05-24 DOI: 10.1088/2633-1357/ac049a

Anju Rani, Ravibabu Mulaveesala

{"title":"Pulse compression favorable frequency modulated thermal wave imaging for non-destructive testing and evaluation: an analytical study","authors":"Anju Rani, Ravibabu Mulaveesala","doi":"10.1088/2633-1357/ac049a","DOIUrl":"https://doi.org/10.1088/2633-1357/ac049a","url":null,"abstract":"InfraRed Thermography (IRT) is one of the non-destructive testing and evaluation (NDT&E) approach widely used for testing and evaluation of wide verity of materials such as metals, semiconductors and composites. Among the widely used Thermal NDT&E (TNDT&E) approaches for better depth resolution and sensitivity for detection of defects located at different depths inside the test specimen recently proposed correlation based approach gained importance due to its enhanced defect detection capabilities. The present paper introduces a novel one-dimensional analytical solution for the frequency modulated excitation scheme under adiabatic boundary conditions for detection of flat bottom holes as defects in a mild steel sample. The performance of the Pulse Thermography (PT), Lock-in Thermography (LT) and Frequency Modulated Thermal Wave Imaging (FMTWI) methods are highlighted their defect detection capabilities have been compared by adopting the recently introduced correlation based post-processing approach. Finally, the proposed analytical method has been validated with the results obtained from the commercially available finite element based software.","PeriodicalId":93771,"journal":{"name":"IOP SciNotes","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46447888","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

On the Lichnerowicz operator in traversable wormhole spacetimes 关于可遍历虫洞时空中的Lichnerowicz算子

IOP SciNotes Pub Date : 2021-05-11 DOI: 10.1088/2633-1357/ac1725

R. Garattini, P. Nicolini

引用次数: 0

Analysis of multiple data sequences with different distributions: defining common principal component axes by ergodic sequence generation and multiple reweighting composition 不同分布的多个数据序列的分析：通过遍历序列生成和多重重加权组合定义公共主分量轴

IOP SciNotes Pub Date : 2021-04-16 DOI: 10.1088/2633-1357/ac0ac2

I. Fukuda, K. Moritsugu

引用次数: 0

Using pycnometry and Archimedes’ principle to measure the gross and air cavity volume of fruit 利用体积测量法和阿基米德原理测量果实的总体积和空腔体积

IOP SciNotes Pub Date : 2021-03-29 DOI: 10.1088/2633-1357/abf33f

S. Hughes, Sebastian Quintero Olaya

引用次数: 1

Association between mobile phone use in young children and caregiver-rated health 幼儿使用移动电话与照顾者评价的健康之间的关系

IOP SciNotes Pub Date : 2021-03-01 DOI: 10.1088/2633-1357/abe6f1

N. Kojimahara, M. Matsushita, Yasuto Sato

{"title":"Association between mobile phone use in young children and caregiver-rated health","authors":"N. Kojimahara, M. Matsushita, Yasuto Sato","doi":"10.1088/2633-1357/abe6f1","DOIUrl":"https://doi.org/10.1088/2633-1357/abe6f1","url":null,"abstract":"The association between mobile phone or tablet use and children’s health remains unclear. The main aim of this study was to examine whether caregiver-rated health and children’s mental disorders were related to their mobile phone use. We conducted a multistage sampling Internet survey of 1535 caregivers living with children aged 0–14 years in Japan. Using this cross-sectional data, multiple regression models were used to test for relationships among factors related to mobile phone use, caregiver-rated child health, and mental disorders. Total mobile phone use time was related to age, number of siblings, availability of Wi-Fi at home, and the child’s ownership of a mobile phone. Age and availability of Wi-Fi at home were positively related to tablet use, but neither the number of siblings nor the child’s ownership of a tablet were related to tablet use. In addition, we examined that tablet use (Odds ratio 0.62, 95% CI 0.39–1.00) and Wi-Fi use (Odds ratio 0.66, 95% CI 0.47–0.93) were related to low caregiver-rated child health among preschool students. It was newly pointed out that tablet and Wi-Fi use were related to low caregiver-rated child health among preschool students. As young children are likely to be exposed to internet for the purpose of babysitting, this study suggested that parents should be aware of mental influence for tablets and Wi-Fi use.","PeriodicalId":93771,"journal":{"name":"IOP SciNotes","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42115667","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