3,479 research outputs found
Formulation of electrophoretic module for integration onto silicon-on-insulator neural probes
No full textCapillary electrophoresis (CE) has become a key analytical technique, especially in neurochemistry, due to its high separation efficiency and ability to analyze complex mixtures at a small scale [1]. However, challenges remain when it comes to scaling CE systems to match the demands of specific applications, particularly in situations where sample volume is constrained, such as brain research. This thesis investigates the scaling and integration of CE into micro-nano scale systems (focusing on how it can be adapted for neurochemistry workflows) and showcases further advancement from existing Microchip electrophoresis to Nanochip electrophoresis.Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2027-12-01The student, Garima Gupta, accepted the attached license on 2025-12-12 at 13:31.The student, Garima Gupta, submitted this Thesis for approval on 2025-12-12 at 13:33.This Thesis was approved for publication on 2025-12-12 at 15:05.DSpace SAF Submission Ingestion Package generated from Vireo submission #23085 on 2026-02-19 at 20:10:0
Probing on green long persistent Eu /Dy 31 doped Sr 3 SiAl 4 O 11 emerging phosphor for security applications
No full textHerein, a novel green emitting long-persistent Sr3SiAl4O11:Eu2+/Dy3+ phosphor was synthesized in a single phase form using facile solid state reaction method under the reducing atmosphere of 10% H2 and 90% N2. The resulting phosphor exhibits hyper-sensitive strong broad green emission, peaking at 510 nm upon 340 nm excitation wavelength, which is attributed to the 4f65d1-4f7 transitions of emission center of europium (Eu2+) ions. Moreover, the incorporation of dysprosium (Dy3+) ions, which act as effective hole trap centers with appropriate depth, largely enhances the photoluminescence characteristics and greatly improves the persistent intense luminescence behavior of Sr3SiAl4O11:Eu2+/Dy3+ phosphor under ultraviolet (UV) excitation. In addition, with the optimum doping concentration and sufficient UV excitation time period, the as-synthesized phosphor can be persisted afterglow for time duration ∼4 h with maximum luminescence intensity. Thus, these results suggest that this phosphor could be expected as an ultimate choice for next generation advanced luminescent materials in security applications such as latent finger-marks detection, photo-masking induced phosphorescent images, and security code detection. Probing on green long persistent Eu /Dy 31 doped Sr 3 SiAl 4 O 11 emerging phosphor for security applications. Available from: https://www.researchgate.net/publication/279230500_Probing_on_green_long_persistent_Eu_Dy_31_doped_Sr_3_SiAl_4_O_11_emerging_phosphor_for_security_applications [accessed Mar 29, 2017]
Sunlight-activated Eu2+/Dy3+ doped SrAl2O4 water resistant phosphorescent layer for optical displays and defence applications
No full textHerein, we introduce a strategy for the fabrication of a sunlight-activated green luminescent Eu2+/Dy3+ doped strontium aluminate (Sr1-x-yAl2O4:Eu-x(2+)/Dy-y(3+)) assisted long persistent, transparent, flexible and water resistant phosphorescent layer via a customized solid state reaction-solution casting method. The XRD result of as-synthesized phosphor shows a pure monoclinic crystal structure with the space group P2(1). This as-synthesized phosphor exhibits green afterglow emission with a broad band peaking similar to 528 nm upon a broad range of excitation wavelengths from 368-418 nm, which is ascribed to the characteristic 4f(6)5d(1) -> 4f(7) electronic dipole allowed transition of Eu2+ ions. Moreover, the role of Dy3+ as an auxiliary activator significantly prolongs the afterglow duration to a large extent by increasing the number of electron traps and their trap depths in the vicinity of Eu2+. Accordingly, a brighter afterglow intensity with a time more than 5 hours is observed for the optimal concentration of Eu2+/Dy3+ in Sr1-x-yAl2O4:Eux(2+)/Dyy(3+), (x = 0.1 and y = 0.2) in the long persistent phosphor. The incorporation of the sunlight-activated as-synthesized Sr0.7Al2O4:Eu-0.1(2+)/Dy-0.2(3+) phosphor in a commercially available PVC gold medium offers a highly dispersive transparent luminescent paint, which can be used for the spray coating of monuments, as well as for the fabrication of transparent, flexible and water resistant phosphorescent layers. Hence, these striking features of the luminescent paint, as well as the flexible transparent phosphorescent layer could be potentially utilized in optical displays and defence applications
Data for Gupta et al., "Estimating the Meridional Extent of Adiabatic Mixing in the Stratosphere using Age-of-Air", JGR:Atmospheres,
No full textModel data and post-processed data supporting the creation of the manuscript "Estimating the Meridional Extent of Adiabatic Mixing in the Stratosphere using Age-of-Air" submitted to JGR:Atmospheres in August 2022.
1) The netCDF files created through post-processing of full model data in FORTRAN are shared in the /data/ directory. These file contains the zonal mean circulation statistics based on Gupta et al. (2020), age-of-air transport diagnostics based on Linz et al. (2021), and the novel \Gamma-\Theta circulation streamfunction introduced in this study. The /data/ directory also contains MATLAB .mat data files for the transport diagnostics obtained from WACCM. 150 days of actual GFDL-FV3 model data in the northern hemisphere, between 0.1 hPa-500 hPa pressure levels is also provided to support external computations and validation.
2) The Jupyter notebook used for final computation and figures production is provided in .ipynb, .html and .pdf formats in /code/. All the files referred to in the notebook are stored in the /data/ directory.
Corresponding author : Aman Gupta, [email protected], [email protected], [email protected]
Supplementary_data – Supplemental material for Successful Second-Line Metronomic Temozolomide in Metastatic Paraganglioma: Case Reports and Review of the Literature
No full textSupplemental material, Supplementary_data for Successful Second-Line Metronomic Temozolomide in Metastatic Paraganglioma: Case Reports and Review of the Literature by Isabel Tena, Garima Gupta, Marcos Tajahuerce, Marta Benavent, Manuel Cifrián, Alejandro Falcon, María Fonfria, Maribel del Olmo, Rosa Reboll, Antonio Conde, Francisca Moreno, Julia Balaguer, Adela Cañete, Rosana Palasí, Pilar Bello, Alfredo Marco, José Luis Ponce, Juan Francisco Merino, Antonio Llombart, Alfredo Sanchez and Karel Pacak in Clinical Medicine Insights: Oncology</p
Corrigendum: Capital Inflows and House Prices: Aggregate and Regional Evidence from China
No full textIn the paper ‘Capital Inflows and House Prices: Aggregate and Regional Evidence from China’ by H. An, et al., printed in the December 2016 issue, there was a missing acknowledgement section for funding resources.
On page 451, the acknowledgement section should appear after the corresponding information as:
“Correspondence: Rakesh Gupta, Department of Accounting, Finance and Economics, Griffith Business School, Griffith University, Nathan Campus QLD 4111. [email protected]
*This work was financially supported by the Humanities and Social Science Foundation of Ministry of Education of China (16YJA790001).”
The author apologises for this error and any confusion it may have caused.No Full Tex
First person – Akash Gupta
No full textFirst Person is a series of interviews with the first authors of a selection of papers published in Biology Open, helping early-career researchers promote themselves alongside their papers. Akash Gupta is first author on ‘A novel and cost-effective ex vivo orthotopic model for the study of human breast cancer in mouse mammary gland organ culture’, published in BiO. Akash conducted the research described in this article while a PhD Scholar in Rajendra Mehta's lab at IIT Research Institute, Chicago, USA. He is now an assistant research scientist in the lab of Syreeta L. Tilghman at the University of Arizona, Department of Medicine, Tucson, USA, investigating drug efficacy modeling using human organoids culture for the treatment of cancers
Assessment of hemispheric asymmetry: Development and psychometric evaluation of a chimeric face test
No full textBackground: Anomaly in hemispheric functioning has been linked with various psychiatric conditions. However, most of the procedures used to assess hemispheric asymmetry in clinical population require special training and/or complex procedures and some of the measures suffer from such methodological problems that undermine their utility for clinical use. Further, the available economical procedures such as chimeric face test (CFT) utilize facial expression of emotions posed by western expressers and are therefore less valid measures in Indian context. Aim: Taking these limitations into account, the present study makes an attempt to develop a CFT (using facial affect photographs of Indian expressers) as an alternative and economical procedure for the assessment of hemispheric asymmetry. Materials and Methods: Using the happy and neutral expressions of eight Indian expressers, 32 chimeric faces were developed by combining the half happy and half neutral expressions. These 32 chimeric faces were presented in pairs (arranged in top-bottom fashion) in booklet form to 225 right-handed participants. Using the contemporary item analytic procedure, finally 22 pairs of chimeric faces that showed satisfactory psychometric properties were retained. These 22 pairs of chimeric faces formed the final CFT. The psychometric properties of the various items as well as that of the whole CFT were found satisfactory. Results: All the items were found reliable and valid as indicated by item-total correlation and alpha-if-item deleted. The internal consistency of the CFT was also found to be highly satisfactory (Cronbach′s alpha =.80). Further, the participants on the average showed a right hemispheric advantage on the CFT that provide support to its validity. The findings of intermediate analysis of the data of an ongoing project also provide preliminary evidence for the validity of the CFT. Conclusion : The CFT is a reliable and valid measure to assess hemispheric asymmetry in the processing of facial emotions and may prove to be an economical and useful tool in clinical setting
User Control Over Personal Information: A Case Study of Facebook, Twitter, and Snapchat
No full textIssues relating to privacy over social media websites have been hotly debated for some time. It is widely believed that the privacy policies of these websites are not completely transparent. This chapter considers the latest trends on two popular social media websites and one mobile application, viz., Facebook, Twitter, and Snapchat. For our purposes, these three together will be considered as social media platforms. Privacy policies continue to be a contentious issue at the present time with social media platforms not always fulfilling the requirements of data protection principles, although we see a desire to make such policies a lot more transparent than they used to be. The chapter identifies the tools that help users to control dissemination of personal information over these platforms. It concludes by noting that existing controls are marred by complications, since users are still not sure of what to expect from existing privacy settings
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