Wyniki wyszukiwania dla: J. Pandey

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Near‐Field Thermal Profiling and 3D Anisotropic Thermal Analysis of Quantum Cascade Lasers

Farhat Abbas, Trey Daunis, Binay J. Pandey, Kevin Clark, więcej

physica status solidi (a) > 220 > 8 > n/a - n/a

The development of a scanning near‐field optical microscopy (SNOM) method with high temperature and spatial resolution to probe the thermal behavior of quantum cascade lasers (QCLs) is reported. Specifically, thermal profiling of InGaAs/InAlAs/InP buried heterostructure (BH) mounted epi‐layer side down QCLs is performed. The findings are verified by 3D anisotropic thermal analysis of QCLs with anisotropic...

artykuł

Examining the factor structure and discriminative utility of the Infant Behavior Questionnaire–Revised in infant siblings of autistic children

Sooyeon Sung, Angela Fenoglio, Jason J. Wolff, Robert T. Schultz, więcej

Child Development > 93 > 5 > 1398 - 1413

Using the Infant Behavior Questionnaire–Revised in a longitudinal sample of infant siblings of autistic children (HR; n = 427, 171 female, 83.4% White) and a comparison group of low‐risk controls (LR, n = 200, 86 female, 81.5% White), collected between 2007 and 2017, this study identified an invariant factor structure of temperament traits across groups at 6 and 12 months. Second, after partitioning...

artykuł

Selection of ACC deaminase positive, thermohalotolerant and drought tolerance enhancing plant growth‐promoting bacteria from rhizospheres of Cyamopsis tetragonoloba grown in arid regions

D. Goyal, S. Kumar, D. Meena, S.S. Solanki, więcej

Letters in Applied Microbiology > 74 > 4 > 519 - 535

Plant growth‐promoting bacteria (PGPB) expressing 1‐aminocyclopropane‐1‐carboxylic acid (ACC) deaminase activity are widely acknowledged to have a role in mitigation of abiotic stress caused by extreme environmental conditions. Consequently, several studies have focused on the isolation of ACC deaminase positive PGPBs. However, the application of such strains in drought‐prone arid regions has remained...

artykuł

A carbon‐nanofiber glass composite with high electrical conductivity

Guangming Tao, Shi Chen, Sudeep J. Pandey, Felix A. Tan, więcej

International Journal of Applied Glass Science > 11 > 3 > 590 - 600

The use of oxide glasses is pervasive throughout everyday amenities and commodities. Such glasses are typically electrical insulators, and endowing them with electrical conductivity—without changing their salutary mechanical properties, weight, or thermoformability—enables new applications in multifunctional utensils, smart windows, and automotive parts. Previous strategies to impart electrical conductivity...

artykuł

A longitudinal study of parent‐reported sensory responsiveness in toddlers at‐risk for autism

Jason J. Wolff, Adele F. Dimian, Kelly N. Botteron, Stephen R. Dager, więcej

Journal of Child Psychology and Psychiatry > 60 > 3 > 314 - 324

Background Atypical sensory responsivity and sensory interests are now included in the DSM 5 diagnostic criteria for autism spectrum disorder (ASD) under the broad domain of restricted and repetitive behavior (RRB). However, relatively little is known about the emergence of sensory‐related features and their relation to conventionally defined RRB in the first years of life. Methods Prospective,...

artykuł

Reactive Calcination Route for Synthesis of Highly Active NiCo₂O₄ Catalyst for Abatement of Cold-Start CO–HC Emissions from LPG Vehicles

Pratichi Singh, Deepak Yadav, J. Pandey, R. Prasad

Catalysis Letters > 2017 > 147 > 9 > 2385-2398

An idea of an exotic route of reactive calcination (RC) of a precursor (co-precipitated basic carbonates of nickel and cobalt) for the synthesis of highly active NiCo₂O_4−δ spinel catalyst (Cat-R) for oxidation of CO and HCs emissions from LPG fueled vehicles is reported in the present paper. The route involved feed of a low concentration of chemically reactive 4.5% CO–air mixture over the precursor...

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Modeling the Thermoelectric Properties of Ti₅O₉ Magnéli Phase Ceramics

Sudeep J. Pandey, Giri Joshi, Shidong Wang, Stefano Curtarolo, więcej

Journal of Electronic Materials > 2016 > 45 > 11 > 5526-5532

Magnéli phase Ti₅O₉ ceramics with 200-nm grain-size were fabricated by hot-pressing nanopowders of titanium and anatase TiO₂ at 1223 K. The thermoelectric properties of these ceramics were investigated from room temperature to 1076 K. We show that the experimental variation of the electrical conductivity with temperature follows a non-adiabatic small-polaron model with an activation energy of 64 meV...

rozdział

Chemotactic Responses

R. K. Jain*, J. Pandey

Handbook of Hydrocarbon and Lipid Microbiology > Microbiology and Community Procedures (Section Editor: Jan Roelof van der Meer) > 3933-3955

Bacterial chemotaxis, i.e., ability of a bacterial cell to sense and migrate towards or away from a chemical concentration gradient, has been a subject of ever-increasing scientific interest. Recent reports on diversity of chemotactic responses have indicated occurrence of the phenomenon amongst almost all the motile bacterial strains irrespective of their taxonomic status. Also, bacterial chemotaxis...

artykuł

Investigation of the Role of Fire Retardants in Preventing Spontaneous Heating of Coal and Controlling Coal Mine Fires

J. Pandey, N. K. Mohalik, R. K. Mishra, A. Khalkho, więcej

Fire Technology > 2015 > 51 > 2 > 227-245

Mine fire is a major problem for the Indian coal mining industry and exists since beginning of the mining. A huge amount of the prime coking coal reserves of different coalfields are blocked due to existence of fire and thus cannot be extracted without extinguishing it. Many approaches have been attempted in this direction to minimize this socio-technological problem. Use of chemical retardants to...

artykuł

The Subunit B-Dimer of the F1-ATPase Influences Conformational Transitions During Catalysis

Susan J. Pandey, Fran Brewer, John G. Wise, Pia D. Vogel

Biophysical Journal > 2012 > 102 > 3 Supplement 1 > 571a

rozdział

Functional Contact Lenses for Remote Health Monitoring in Developing Countries

N. Thomas, I. Lahdesmaki, A. Lingley, Y. Liao, więcej

2011 IEEE Global Humanitarian Technology Conference > 212 - 217

2011 IEEE Global Humanitarian Technology Conference (GHTC)

The opportunities afforded by using a functional contact lens for remote wireless health status monitoring are discussed and the progress to date in the development of this technology platform is presented. A functional contact lens complete with sensors and embedded circuitry can be used to monitor the composition of tear fluid and, by extension, a number of health-status related parameters in the...

rozdział

A 120μW MICS/ISM-band FSK receiver with a 44μW low-power mode based on injection-locking and 9x frequency multiplication

J Pandey, Jianlei Shi, B Otis

2011 IEEE International Solid-State Circuits Conference > 460 - 462

2011 IEEE International Solid- State Circuits Conference (ISSCC 2011)

For true low-power peer-to-peer wireless links for sensing, link symmetry must be maintained unlike in [1,2] where the burden is shifted to the receiver. In addition, the transceiver power dissipation and performance should be adaptive to save power when the link distance is short. We present a 120μW MICS/ISM band receiver with -90dBm sensitivity at a data-rate of 200kb/s with BER<;0.1%. The receiver...

artykuł

A Sub-100 $\mu$ W MICS/ISM Band Transmitter Based on Injection-Locking and Frequency Multiplication

J Pandey, B P Otis

IEEE Journal of Solid-State Circuits > 2011 > 46 > 5 > 1049 - 1058

For fully autonomous implantable or body-worn devices running on harvested energy, the peak and average power dissipation of the radio transmitter must be minimized. Additionally, link symmetry must be maintained for peer-to-peer network applications. We propose a highly integrated 90 μW 400 MHz MICS band transmitter with an output power of 20 μW, leading to a 22% global efficiency - the highest reported...

artykuł

Fluoride Contamination and Fluorosis in Rural Community in the Vicinity of a Phosphate Fertilizer Factory in India

J. Pandey, U. Pandey

Bulletin of Environmental Contamination and Toxicology > 2011 > 87 > 3 > 245-249

We studied chronic fluoride intoxication in 10 villages of Udaipur receiving F emissions from phosphate fertilizer factories. Although fluoride remained below permissible limit in most of the drinking water samples, the incidence of fluorosis in adults as well as in children was surprisingly high. Khemli appeared to be the most affected village (with >48% cases) where, about 93% of 2 h air samples...

rozdział

Circuit techniques for wireless bioelectrical interfaces

M Nagaraju, J Silver, F Zhang, Y Liao, więcej

Proceedings of 2010 International Symposium on VLSI Design, Automation and Test > 117 - 120

2010 International Symposium on VLSI Design, Automation and Test (VLSI-DAT 2010)

Recent advances in integrated circuit technology scaling, analog circuitry, and wireless communication have created the possibility for complex low noise, low power wireless instrumentation to be deployed in previously impossible scenarios, particularly in the realm of wireless sensing for biology research and biomedical applications. The generation of portable, autonomous devices made possible by...

artykuł

“Structure and Dynamics of the External Stalk of the FoF1-ATP Synthase”

Oleg A. Volkov, Tassilo Hornung, Susan J. Pandey, Tarek M. Zaida, więcej

Biophysical Journal > 2010 > 98 > 3 Supplement 1 > 733a-734a

rozdział

Toward an active contact lens: Integration of a wireless power harvesting IC

J. Pandey, Yu-Te Liao, A. Lingley, B. Parviz, więcej

2009 IEEE Biomedical Circuits and Systems Conference > 125 - 128

2009 IEEE Biomedical Circuits and Systems Conference (BioCAS)

The overarching goal of an active contact lens is to integrate sensing or display functionality onto a wearable device, enabling on-lens medical monitoring and heads-up displays. We present progress toward a wirelessly-powered active contact lens comprising a transparent polymer substrate, loop antenna, power harvesting IC, and a custom micro-LED. The fully integrated radio power harvesting and a...

rozdział

Circuit techniques for wireless brain interfaces

B. Otis, C. Moritz, J. Holleman, A. Mishra, więcej

2009 Annual International Conference of the IEEE Engineering in Medicine and Biology Society > 3213 - 3216

2009 Annual International Conference of the IEEE Engineering in Medicine and Biology Society

Efficient, miniaturized wireless recording is critical for both existing and emerging health-monitoring applications. One important example of this is in the brain interface community, where new technologies allow improved observation and understanding of brain functions. This, in turn, drives the need for ever smaller, lower power, and higher performance circuitry for chronic recording. This paper...

rozdział

Design techniques for self-powered microsystems

B. Otis, R. Egbert, S. Haq, J. Holleman, więcej

2009 IEEE International Symposium on Circuits and Systems > 1429 - 1432

2009 IEEE International Symposium on Circuits and Systems - ISCAS 2009

This paper describes recent advancements in low power circuit design and energy harvesting that will help lead to the autonomous operation of microscale autonomous sensing platforms. Low power circuit techniques for sensor interfaces and RF communication are explored. We introduce a 1 cm³ thermoelectric energy harvester and present measured results.

artykuł

The External Stalk of the FoF1-ATPase: 3D-Structure of the b-Dimer

Oleg A. Volkov, Susan J. Pandey, John G. Wise, Pia D. Vogel

Biophysical Journal > 2009 > 96 > 3 Supplement 1 > 8a

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