606 research outputs found
Arun Shourie and his Christian critic
No full textCritique by Fr. Augustine Kanjamala on Arun Shourie's Missionaries in India and response to it by the author
R16. Formulation and Evaluation of Doxorubicin HCl Nanoliposomes by Ethanol Injection Method
No full textCorresponding author (Pharmaceutics and Drug delivery): Arun Kumar Kotha, [email protected]://egrove.olemiss.edu/pharm_annual_posters/1015/thumbnail.jp
Understanding the value-chain of counterfeit products: A multimethod investigation
No full textThe student, - Sreekumar Arun, accepted the attached license on 2021-04-13 at 23:09.The student, - Sreekumar Arun, submitted this Dissertation for approval on 2021-04-13 at 23:23.This Dissertation was approved for publication on 2021-04-15 at 11:53.DSpace SAF Submission Ingestion Package generated from Vireo submission #16317 on 2021-09-16 at 17:03:02Made available in DSpace on 2021-09-17T02:34:25Z (GMT). No. of bitstreams: 2
SREEKUMARARUN-DISSERTATION-2021.pdf: 1165555 bytes, checksum: 5224c2afec936d334243407f8cdc4a58 (MD5)
LICENSE.txt: 4213 bytes, checksum: 6a931b7df048f222f1bf46543b830705 (MD5)
Previous issue date: 2021-04-15Embargo set by: Seth Robbins for item 118507
Lift date: 2023-09-17T02:34:57Z
Reason: Author requested U of Illinois access only (OA after 2yrs) in Vireo ETD systemAuthor requested U of Illinois access only (OA after 2yrs) in Vireo ETD systemU of I OnlyThe context of this dissertation is the market for counterfeit products, which accounts for more than one trillion US dollars of trade globally every year. Entrepreneurs who manufacture and market these products are clandestine and operate in the black market. Drawing from this context, this dissertation seeks to advance knowledge on how entrepreneurs strategically use ambiguity in marketing communications, and in relationships with other firms. The first essay examines how and why equivocation is used as a persuasive strategy by sellers of counterfeit products. This essay develops a framework that can help qualitatively and quantitatively identify equivocation rhetoric in firm-generated text. The second essay examines how relationships between firms are managed when one of the firms employs ambiguity as a protection strategy. Specifically, the essay sheds light on how manufacturers and retailers of counterfeit products succeed in maintaining ambiguity, and in managing relationship tension arising from ambiguity. Put together, the essays present an investigation of how counterfeit manufacturers and retailers conduct their marketing functions despite being clandestine and illegal.Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2023-05-0
Deformation Behavior of adidas BOOST(TM) Foams Using In Situ X-ray Tomography and Correlative Microscopy
No full textabstract: Energy return in footwear is associated with the damping behavior of midsole foams, which stems from the combination of cellular structure and polymeric material behavior. Recently, traditional ethyl vinyl acetate (EVA) foams have been replaced by BOOST(TM) foams, thereby reducing the energetic cost of running. These are bead foams made from expanded thermoplastic polyurethane (eTPU), which have a multi-scale structure consisting of fused porous beads, at the meso-scale, and thousands of small closed cells within the beads at the micro-scale. Existing predictive models coarsely describe the macroscopic behavior but do not take into account strain localizations and microstructural heterogeneities. Thus, enhancement in material performance and optimization requires a comprehensive understanding of the foam’s cellular structure at all length scales and its influence on mechanical response.
This dissertation focused on characterization and deformation behavior of eTPU bead foams with a unique graded cell structure at the micro and meso-scale. The evolution of the foam structure during compression was studied using a combination of in situ lab scale and synchrotron x-ray tomography using a four-dimensional (4D, deformation + time) approach. A digital volume correlation (DVC) method was developed to elucidate the role of cell structure on local deformation mechanisms. The overall mechanical response was also studied ex situ to probe the effect of cell size distribution on the force-deflection behavior. The radial variation in porosity and ligament thickness profoundly influenced the global mechanical behavior. The correlation of changes in void size and shape helped in identifying potentially weak regions in the microstructure. Strain maps showed the initiation of failure in cell structure and it was found to be influenced by the heterogeneities around the immediate neighbors in a cluster of voids. Poisson’s ratio evaluated from DVC was related to the microstructure of the bead foams. The 4D approach taken here provided an in depth and mechanistic understanding of the material behavior, both at the bead and plate levels, that will be invaluable in designing the next generation of high-performance footwear.Dissertation/ThesisDoctoral Dissertation Materials Science and Engineering 202
Author Correction: A shared neural basis underlying psychiatric comorbidity
No full textCorrection to: Nature Medicine. Published online 24 April 2023. In the version of this article initially published, the STRATIFY data also included cohort data from the ESTRA consortium, though this was not acknowledged in the author list and the section in Methods on the Stratify dataset. The Methods are now updated, and the author list is amended to combine the STRATIFY and ESTRA consortium names and to include the following authors: Marina Bobou, M. John Broulidakis, Betteke Maria van Noort, Zuo Zhang, Lauren Robinson, Nilakshi Vaidya, Jeanne Winterer, Yuning Zhang, Sinead King, Hervé Lemaître, Ulrike Schmidt, Julia Sinclair, Argyris Stringaris and Sylvane Desrivières. The STRATIFY and ESTRA consortia are now combined to list Marina Bobou, M. John Broulidakis, Betteke Maria van Noort, Zuo Zhang, Lauren Robinson, Nilakshi Vaidya, Jeanne Winterer, Yuning Zhang, Sinead King, Gareth J. Barker, Arun L. W. Bokde, Hervé Lemaître, Frauke Nees, Dimitri Papadopoulos Orfanos, Ulrike Schmidt, Julia Sinclair, Argyris Stringaris, Henrik Walter, Robert Whelan, Sylvane Desrivières and Gunter Schumann as members, and the IMAGEN consortium is updated to also include Sylvane Desrivières. Affiliations, author contributions and acknowledgements have been updated to reflect the new authorship, and all changes have been made in the HTML and PDF versions of the article
Formulation of Oil Spill Dispersants using Biobased Surfactants and the Study of Flow-induced Breakup of Floating Oil Drops
No full textThis thesis deals with two challenges related to oil spills. First, the Hydrophilic-Lipophilic Difference (HLD) framework was used to develop a lecithin formulation containing food-grade lipophilic and hydrophilic linkers in combination with a non-volatile, mineral oil solvent with food additive status. The HLD parameters of the components were used to determine the lecithin-linker formulations and the interfacial tensions were of the order of 10-2 mN/m and emulsification effectiveness in the range of 75- 85%. The second part of this thesis addresses the breakup oil drops floating on water/aqueous medium under simple shear flow, using a counter-rotating circular Couette device. It was observed that floating drops produce fine droplets via tip-streaming in viscosity matched systems too. At a solvent to bitumen (S/B) ratio of 2, diluted bitumen drops formed a rigid network upon spreading on the interface, but at lower S/B ratios (0.5), they formed drops that rotated like rigid structures.M.A.S.2020-11-27 00:00:0
A 3-Bit Current Mode Quantizer for Continuous Time Delta Sigma Analog-to-Digital Converters
No full textThe summing amplifier and the quantizer form two of the most critical blocks in a continuous time delta sigma (CT ����) analog-to-digital converter (ADC). Most of the conventional CT ���� ADC designs incorporate a voltage summing amplifier and a voltage-mode quantizer. The high gain-bandwidth (GBW) requirement of the voltage summing amplifier increases the overall power consumption of the CT ���� ADC. In this work, a novel method of performing the operations of summing and quantization is proposed. A current-mode summing stage is proposed in the place of a voltage summing amplifier. The summed signal, which is available in current domain, is then quantized with a 3-bit current mode flash ADC. This current mode summing approach offers considerable power reduction of about 80% compared to conventional solutions [2]. The total static power consumption of the summing stage and the quantizer is 5.3mW. The circuits were designed in IBM 90nm process. The static and dynamic characteristics of the quantizer are analyzed. The impact of process and temperature variation and mismatch tolerance as well as the impact of jitter, in the presence of an out-of-band blocker signal, on the performance of the quantizer is also studied
Seismic Velocities of the Whitestone Anorthosite and its Mylonitized Equivalents in the Parry Sound Shear Zone
No full textTitle: Seismic Velocities of the Whitestone Anorthosite and its Mylonitized Equivalents in the Parry Sound Shear Zone, Author: Arun Sen, Location: ThodeCompressional wave velocities of the Whitestone anorthosite and its mylonitic equivalent in the Parry Sound shear zone have been measured in the field and to two kilobars in a laboratory confining pressure vessel. Mylonitiztion of the anorthosite has resulted in a preferred orientation of constituent minerals and retrograde mineral assemblages. A seimic anisotropy is consequently developed in the mylonite such that the P-wave velocitites are lower for propagation directions perpendicular to mylonite than for its anorthosite protolith. In the field, rock weathering and surface fractures control velocity variations. At low confining pressure (shallow depth) the P-wave velocity anisotropy is controlled by fracturing which is in turn related to the mylonitic fabric. At approximately one kilobar pressure (depths close to five kilometres) where fractures and porosity are insignificant, the P-wave anisotropy is due solely to the aggregate mineral velocities and their solution and their orientations. The undeformed Whitestone anorthosite has an average P-wave velocity of 7.02 km/s measured in three perpendicular directions at 2 kilobars confining pressure. The mylonite has the following P-wave velocities at 2 kilobars confining pressure: 6.83 km/s parallel to both foliation and lineation, 6.70 km/s parallel to foliation and perpendicular to lineation, and 6.57 km/s perpendicular to foliation.ThesisBachelor of Science (BSc
Rare paternal plastid inheritance in arabidopsis
No full textPlastids and mitochondria, in a standard genetic cross, are transmitted to the seed progeny by the maternal parent in Arabidopsis thaliana. My objective was to test, if exceptional pollen transmission of plastid occurs in Arabidopsis, a species in which no plastid DNA could be detected in pollen or sperm cells by cytological methods. The maternal parent was the nuclear male sterile (ms1-1/ms1-1), spectinomycin sensitive Ler ecotype and the pollen parent was the male fertile RLD-Spc1 plant carrying a plastid-encoded spectinomycin resistance mutation. I selected for exceptional pollen transmission in the progeny by spectinomycin resistance encoded in the paternal plastid DNA. I found that plastids, in general, are inherited maternally in Arabidopsis and rare events of paternal plastid transmission to the seed progeny occurs at a low (3.9 x 10-5) frequency. This observation extends previous reports in Nicotiana tabacum (family: Solanaceae) to a cruciferous species suggesting that low frequency paternal leakage of plastids via pollen may be universal in plants previously thought to exhibit strict maternal plastid inheritance.
Two components needed to accomplish this study were a plastid-encoded, spectinomycin resistant mutant as the pollen parent and plastid markers to identify the origin of the plastids in the hybrid seed progeny obtained from the crosses. To identify genetic markers in the Arabidopsis thaliana plastid genome (ptDNA) I amplified and sequenced the rpl2-psbA and rbcL-accD regions in 26 ecotypes. The two regions contained eight polymorphic sites including five insertions and/or deletions (indels) involving changes in the length of A or T mononucleotide repeats and three base substitutions. The 27 alleles provided a practical set of ptDNA markers for the commonly used RLD, Ler, Col and C24 ecotypes. I used a RLD-Spc1 line carrying a plastid-encoded spectinomycin resistant mutation as the pollen parent that was compatible with the Ler maternal parent.Ph.D.Includes bibliographical references
- …
