International Journal of Nanoparticles最新文献

Social cognitive mechanisms between psychological maltreatment and adolescent suicide ideation: Race/ethnicity and gender as moderators. 心理虐待与青少年自杀意念之间的社会认知机制:种族/民族和性别是调节因素。

IF 2.8

International Journal of Nanoparticles Pub Date : 2022-11-01 Epub Date: 2022-09-08 DOI: 10.1037/vio0000447

Mariah Xu, Beverlin Rosario-Williams, Emily A Kline, Regina Miranda

{"title":"Social cognitive mechanisms between psychological maltreatment and adolescent suicide ideation: Race/ethnicity and gender as moderators.","authors":"Mariah Xu, Beverlin Rosario-Williams, Emily A Kline, Regina Miranda","doi":"10.1037/vio0000447","DOIUrl":"10.1037/vio0000447","url":null,"abstract":"Childhood psychological maltreatment is a well-studied predictor of adolescent suicide ideation, while social support is a protective factor, but little is known about social-cognitive mechanisms that may link psychological maltreatment to suicide ideation. Further, given the impact that culture, race/ethnicity, and gender can have on social relationships and suicide-related risk factors, these mechanisms may differ across demographic groups.Objective: The current study examined whether psychological maltreatment predicts suicide ideation through self-perception of social competence, and whether this relationship differs depending on race/ethnicity and gender.Method: We analyzed a racially diverse, longitudinal sample of adolescents at risk for maltreatment (N = 765). Self-report measures of lifetime maltreatment were completed at age 12 and combined with data from Child Protective Services. Youth also completed measures of perceived social competence at age 12. Indicators of suicide ideation were taken at ages 8, 12, 16, and 18.Results: Perceived social competence scores differed significantly between children who were psychologically maltreated and those who were not, but these differences were nonsignificant for physical and sexual abuse. Self-perception of social competence fully mediated the relationship between childhood psychological maltreatment and suicide ideation for White girls and boys.Conclusions: Our findings suggest that poor perceived social competence is uniquely associated with psychological maltreatment, and White adolescents may develop suicide ideation through specific mechanisms involving social cognition. Certain youth may benefit from interventions improving social cognitions and promoting healthy relationships to prevent suicide ideation during adolescence.","PeriodicalId":14016,"journal":{"name":"International Journal of Nanoparticles","volume":"6 1","pages":"393-402"},"PeriodicalIF":2.8,"publicationDate":"2022-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10691810/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88881394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Quantum dot solar cell: an emerging nanomaterial-based device in the solar industry 量子点太阳能电池:太阳能工业中基于纳米材料的新兴器件

International Journal of Nanoparticles Pub Date : 2021-07-28 DOI: 10.1504/ijnp.2021.116781

Sweta Sharma, Soaib Khan, Y. Kumar, R. Ranjan

{"title":"Quantum dot solar cell: an emerging nanomaterial-based device in the solar industry","authors":"Sweta Sharma, Soaib Khan, Y. Kumar, R. Ranjan","doi":"10.1504/ijnp.2021.116781","DOIUrl":"https://doi.org/10.1504/ijnp.2021.116781","url":null,"abstract":"The worldwide energy is on the cusp of monstrous alter, driven by an unquenchable request and an increasing mindfulness of the constrained supply and corrupting environment of fossil fuels. More intensive research has been conducted around the world to get different economical energy arrangements. Quantum dot manufactured sun powered cell is the innovation for long run, which can give required efficiency to run the solar industry facing with various challenges underneath silicon photovoltaic cell. Quantum dot cells are most flexible frame of renewable vitality since of its unique properties for producing power, warming as well as desalinating water. QD's have bandgaps which are flexible over a wide range of energy levels by changing the dot size. Semiconductor QDs, due to their quantum-based properties, give a modern pathway for controlling energy stream. In this manner, they have the tremendous potential to elevate the efficiency of solar photovoltaic cells. Herein, we have collectively summarised the advancements of quantum dot solar cell. We are foreseeing that this review will certainly help the researchers for more serious examination of investigations of the nanomaterial in various innovative ranges.","PeriodicalId":14016,"journal":{"name":"International Journal of Nanoparticles","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45522759","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

Optimisation of PCL-HA laden biodegradable nanoparticles containing cyclosporine-A for the treatment of dry eye syndrome: in vitro-in vivo evaluation 含环孢素- a的PCL-HA负载可生物降解纳米颗粒治疗干眼综合征的优化:体外-体内评价

International Journal of Nanoparticles Pub Date : 2021-07-28 DOI: 10.1504/ijnp.2021.10039973

Ishrat S. Chhowala, Asha Patel, Rakesh Patel, V. Bhavsar, A. Dharamsi

{"title":"Optimisation of PCL-HA laden biodegradable nanoparticles containing cyclosporine-A for the treatment of dry eye syndrome: in vitro-in vivo evaluation","authors":"Ishrat S. Chhowala, Asha Patel, Rakesh Patel, V. Bhavsar, A. Dharamsi","doi":"10.1504/ijnp.2021.10039973","DOIUrl":"https://doi.org/10.1504/ijnp.2021.10039973","url":null,"abstract":"The purpose of the present study is to develop polycaprolactone (PCL)-hyaluronic acid (HA) laden biodegradable nanoparticles containing cyclosporine-A (CsA) and sustained the release for ophthalmic delivery. The nanoparticles (NPs) were prepared by solvent diffusion technique followed lyophilisation. Optimisation of product variables for nanoparticles was done by central composite design (CCD) with particle size and entrapment efficiency as chosen responses. The developed formulation consisting 1.18% polycaprolactone and 0.16% hyaluronic acid showed 376.6 nm, −0.438 ± 0.137 mV and 40.945 ± 1.561% particle size, zeta potential and entrapment efficiency respectively. However, this formulation was efficient in controlling the drug release in-vitro as well, i.e., 92.59 ± 0.05% cyclosporine-A release at 24 hours. Surface morphology revealed nanoparticles were spherical in shape. Ocular irritancy study showed that formulation was safe and non-irritant. The Cmax of plain drug and biodegradable nanoparticles was found to be 15.802 mg at 6 hrs (mean residence time - MRT) and 19.447 mg at 8 hrs respectively. Area under the curve (AUC) was found to be 79.26 and 113.0 for plain drug and NPs formulation.","PeriodicalId":14016,"journal":{"name":"International Journal of Nanoparticles","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43169897","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

Types of nanomaterials in food packaging: a review 纳米材料在食品包装中的应用综述

International Journal of Nanoparticles Pub Date : 2021-07-28 DOI: 10.1504/ijnp.2021.116770

Kambiz Sadeghi, M. Shahedi, M. Najafi, Amireh Sadeghi, Mohsen Shirani

引用次数: 1

Analysis of flyback converter design using PV-based MOSFET switching 基于光伏MOSFET开关的反激式变换器设计分析

International Journal of Nanoparticles Pub Date : 2020-12-28 DOI: 10.1504/ijnp.2020.10034531

G. Das, M. De, K. Mandal

引用次数: 0

Preparation and characterisation of Fe3O4@SiO2@MTX@Lipid nanoparticles as a controlled drug-delivery system Fe3O4@SiO2@MTX@Lipid纳米颗粒作为受控给药系统的制备和表征

International Journal of Nanoparticles Pub Date : 2020-12-28 DOI: 10.1504/ijnp.2020.10034530

Nazan Yılmaz, Serpil Edebali, M. Içduygu

引用次数: 0

Photocatalytic degradation of Victoria blue B a cationic dye by synthesised zinc oxide nanoparticle 纳米氧化锌光催化降解阳离子染料维多利亚蓝B

International Journal of Nanoparticles Pub Date : 2020-12-28 DOI: 10.1504/ijnp.2020.10034533

A. Santhosh, K. Yogendra, N. Madhusudhana, K. Mahadevan, I. Mallikarjuna

引用次数: 1

Vertically-stacked silicon nanosheet field effect transistors at 3 nm technology nodes - simulation at nanoscale 垂直堆叠的3纳米技术节点硅纳米片场效应晶体管-纳米级模拟

International Journal of Nanoparticles Pub Date : 2020-09-03 DOI: 10.1504/ijnp.2020.10031798

C. K. Maiti, J. Jena, S. Das, E. Mohapatra, S. Dey, Tara Prasanna Dash

{"title":"Vertically-stacked silicon nanosheet field effect transistors at 3 nm technology nodes - simulation at nanoscale","authors":"C. K. Maiti, J. Jena, S. Das, E. Mohapatra, S. Dey, Tara Prasanna Dash","doi":"10.1504/ijnp.2020.10031798","DOIUrl":"https://doi.org/10.1504/ijnp.2020.10031798","url":null,"abstract":"Feasibility of vertically-stacked silicon nanosheet FETs (SNS-FETs) for extreme scaling at 3 nm technology node are investigated for the first time as one of the possible solutions to continue to enhance the performances of the CMOS technology. In this work, we use 3D predictive simulations to study the performance potential of SNS-FETs at 3 nm technology node. With the end of happy scaling era, change of device architecture has raised integration complexity along with severe short channel effects, mobility degradation, variability and quantum tunnelling leakage. These are the major challenges as device dimensions are scaled for ultimate scaling below 7 nm. Towards low power and high speed (more-than-Moore applications), nanowires and nanosheet transistors are being proposed. Today, the possibility of FinFET downscaling is still open and more than ever alternatives to CMOS transistors, such as, vertically-stacked SNS-FETs are showing their potential to surpass FinFETs. Variability due to metal grain granularity (MGG) is critical at 3 nm technology nodes, as such, the device threshold voltage variation due to MGG is examined for single nanosheet NS-FET. Finally, we calculate the mean and standard deviation of these parameters to quantify the variability.","PeriodicalId":14016,"journal":{"name":"International Journal of Nanoparticles","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47446726","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

A simple method for study of effect of Kerr nonlinearity on effective core area, index of refraction and fractional modal power through the core of monomode graded index fibre 研究单模渐变折射率光纤Kerr非线性对有效纤芯面积、折射率和分数模功率影响的一种简单方法

International Journal of Nanoparticles Pub Date : 2020-03-20 DOI: 10.1504/ijnp.2020.106005

Mithun Maity, A. Maiti, Himadri S. Mandal, S. Gangopadhyay

{"title":"A simple method for study of effect of Kerr nonlinearity on effective core area, index of refraction and fractional modal power through the core of monomode graded index fibre","authors":"Mithun Maity, A. Maiti, Himadri S. Mandal, S. Gangopadhyay","doi":"10.1504/ijnp.2020.106005","DOIUrl":"https://doi.org/10.1504/ijnp.2020.106005","url":null,"abstract":"Using the simple power series expression for fundamental modal field derived by Chebyshev technique, we present investigation of some important propagation parameters like effective core area, index of refraction and fractional modal power guided through the core of single-mode graded index fibre in presence of Kerr nonlinearity. In absence of nonlinearity, the said power series expression leads to prescription of analytical expressions of the concerned propagation parameters. Employing those analytical expressions, we apply iterative method in order to evaluate the said parameters in presence of Kerr nonlinearity. Choosing some typical single-mode step and parabolic index fibres for our study, we verify that the results obtained by our simple formalism match excellently with the exact results which are obtainable by applying rigorous finite element technique. This excellent agreement attests to the accuracy of our formalism. Further, our formalism requires little computation in the context of evaluation of the said parameters. Accordingly, our formalism can be considered as a simple but accurate alternative to the existing complicated methods available in literature. Thus, this user-friendly but accurate formalism will benefit the system engineers in respect of selection of suitable fibre in which modal noise due to nonlinearity is minimum.","PeriodicalId":14016,"journal":{"name":"International Journal of Nanoparticles","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1504/ijnp.2020.106005","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45841491","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

Hardware realisation of an intelligent medical image watermarking 一种智能医学图像水印的硬件实现

International Journal of Nanoparticles Pub Date : 2020-03-20 DOI: 10.1504/ijnp.2020.105999

Sandeep Bal, Sanjay Das, Soumadeb Dutta, Souma Das, Debamita Biswas, A. Basu

{"title":"Hardware realisation of an intelligent medical image watermarking","authors":"Sandeep Bal, Sanjay Das, Soumadeb Dutta, Souma Das, Debamita Biswas, A. Basu","doi":"10.1504/ijnp.2020.105999","DOIUrl":"https://doi.org/10.1504/ijnp.2020.105999","url":null,"abstract":"Digital intelligence features the competence to transmit data at a swifter measure with a substantially superior computing relaxation. Hindrance to this is the up rise of copyright transgression problems. In digital watermarking, novel consumer embeds a distinguishable imprint in the digital medium for eschewing franchise breach. A tunnelled version of the aforementioned methodology is medical image watermarking which primarily focuses on embedding of the watermark in a concerned medical pictorial. The writers have concerned on the realm of intelligent medical image watermarking. Medicative images like USG, CT scan, MRI and X-rays are utilised. An inkling of shovelling a masked image in juxtaposition to the novel medical paradigm has been insinuated. The binary mask used is primarily sectioned according to a fixed ratio and in accordance with a predefined intelligent schematic, the watermark bits are hidden in only a part of the sections to prevent distortion of the information pixels in the medical image. The entrenchment and excerpting epistemologies have been operationalised utilising FPGA. The image testing parameter outcomes are discernibly persistent. Furthermore, an analogy of the proposed approach against few germane methods ensures the supremacy of the technique put forward.","PeriodicalId":14016,"journal":{"name":"International Journal of Nanoparticles","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1504/ijnp.2020.105999","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48921896","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