Distal Esophageal Impedance Measured by High-resolution Esophageal Manometry With Impedance Suggests the Presence of Barrett’s Esophagus

( Rahul Kataria ),( Benjamin Rosenfeld ),( Zubair Malik ),( Martha Harrison ),( Michael S Smith ),( Ron Schey ),( Henry P Parkman ) 대한소화기기능성질환·운동학회(구 대한소화관운동학회) 2020 Journal of Neurogastroenterology and Motility (JNM Vol.26 No.3

Background/Aims Barrett’s esophagus (BE) is characterized by intestinal metaplasia in the distal esophagus. The aims of this study are to: (1) Compare baseline distal esophageal impedance (DEI) using high-resolution esophageal manometry with impedance (HREMI) in patients with BE, esophagitis, and healthy volunteers and (2) Correlate length of low impedance on HREMI in patients with BE to the length of endoscopic BE. Methods Patients with BE or esophagitis who underwent HREMI were included. Ten volunteers had HREMI. Baseline DEI was calculated from HREMI using the landmark segment. In patients with BE, the impedance was plotted to measure the extent of plotted low impedance (PLI) and visual low impedance (VLI). Lengths of VLI and PLI were correlated to endoscopic length of BE by Prague score. Results Forty-five patients were included (16 BE; 19 esophagitis; 10 volunteers). BE patients had lower baseline DEI at the first, second, and third sensors above the lower esophageal sphincter (mean ± SEM: 1.37 ± 0.45, 0.97 ± 0.27, and 0.81 ± 0.20) compared to volunteers (8.73 ± 0.60, 8.20 ± 0.73, and 6.94 ± 0.99; P < 0.001). Baseline DEI was lower in BE than esophagitis patients (2.98 ± 0.65, 2.49 ± 0.56, and 2.01 ± 0.51) at the first, second, and third sensors (P < 0.052 for second and third sensors); ie, BE < esophagitis < controls. PLI and VLI had a stronger correlation to circumferential score (r2 = 0.84 and 0.83) than maximal score (r2 = 0.76 and 0.68). Conclusions Baseline DEI is lower in BE compared with esophagitis and healthy volunteers. The length of low impedance correlates to the endoscopic extent of BE. Thus, impedance values during HREMI may help suggest the presence and extent of BE or esophagitis. (J Neurogastroenterol Motil 2020;26:344-351)

The smart PFD with LRB for seismic protection of the horizontally curved bridge

N.P. Kataria,R.S. Jangid 국제구조공학회 2016 Smart Structures and Systems, An International Jou Vol.17 No.5

Recently, number of smart material are investigated and widely used in civil construction and other industries. Present study investigates the application of smart semi-active piezoelectric friction damper (PFD) made with piezoelectric material for the seismic control of the horizontally curved bridge isolated with lead rubber bearing (LRB). The main aim of the study is to investigate the effectiveness of hybrid system and to find out the optimum parameters of PFD for seismic control of the curved bridge. The selected curved bridge is a continuous three-span concrete box girder supported on pier and rigid abutment. The PFD is located between the deck and abutments or piers in chord and radial directions. The bridge is excited with four different earthquake ground motions with all three components (i.e. two horizontal and a vertical) having different characteristics. It is observed that the use of semi-active PFD with LRB is quite effective in controlling the response of the curved bridge as compared with passive system. The incorporation of the smart damper requiring small amount of energy in addition with an isolation system can be used for effective control the curved bridge against the dynamic loading.

2-D Recursive Digital Filters Realizations for a Class of Transfer Functions

I. K. Kataria,J. S. Sohal 대한전자공학회 1997 TENCON 87 - Computers and Communications Technolog Vol.- No.-

Electronic excitation induced modifications in the ferroelectric polarization of BiFeO₃ thin films

Ravalia, Ashish,Kataria, Bharat,Katba, Savan,Jethva, Sadaf,Vagadia, Megha,Asokan, K.,Gautam, Sanjeev,Chae, Keun Hwa,Kuberkar, D.G. Elsevier 2018 Vacuum Vol.155 No.-

<P><B>Abstract</B></P> <P>We report the effect of electronic excitations induced modifications in the ferroelectric polarization in BiFeO<SUB>3</SUB> (BFO) multiferroic films grown on 0.2% Nb doped SrTiO<SUB>3</SUB> (SNTO) substrates by pulsed laser deposition. The BFO/SNTO films were irradiated with 200 MeV Ag<SUP>+15</SUP> ions with ion fluences of 5 × 10<SUP>10</SUP> to 5 × 10<SUP>12</SUP> ions/cm<SUP>2</SUP> and characterized by using X–ray diffraction (XRD), atomic force microscopy (AFM), ferroelectric polarization and near-edge X-ray absorption fine structure (NEXAFS) measurements. The XRD and AFM results show the creation of structural defects and oxygen vacancies by ion irradiation. Such defects induced enhancement in structural strain and reduction in mobility of charge carriers leading to the improvement in ferroelectric behaviour in BFO films. In addition, the local electronic structures investigated using NEXAFS studies reveal the significant change in spectral features suggesting the role of Bi-O and Fe-O hybridizations that modifies the ferroelectric behaviour of BFO films. These results are used to understand the mechanism.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Ferroelectric properties of PLD grown BiFeO<SUB>3</SUB> thin film has been studied. </LI> <LI> Defects created by ion irradiation and its effect on structural microstructural properties were investigated. </LI> <LI> Defect induced local electronic structure modification was investigated using NEXAS measurements. </LI> <LI> Role of oxygen vacancies and defects in ferroelectric properties were discussed. </LI> </UL> </P>

Improvement of Light Harvesting Property of Polymer Solar Cells by Fabricating Ternary Cascade Energy Structures Using PC<SUB>61</SUB>BM

Hong Diem Chau,Meenal Kataria,권나연,박수홍,제현두,정성훈,강민지,조민주,최동훈 한국고분자학회 2022 한국고분자학회 학술대회 연구논문 초록집 Vol.47 No.1

Efficacy of Electrical Stimulation-Augmented Virtual Reality Training in Improving Balance in Individuals with Incomplete Spinal Cord Injury: Study Protocol of a Randomized Controlled Trial

Walia Shefali,Kumar Pragya,Kataria Chitra 대한척추외과학회 2021 Asian Spine Journal Vol.15 No.6

Study Design: This study is a single-blind, parallel, three-group, and randomized controlled trial. Purpose: This study aimed to investigate the effectiveness of electrical stimulation-augmented virtual reality training in improving balance in individuals with incomplete spinal cord injury (iSCI). Overview of Literature: Individuals with iSCI often face significant balance and mobility impairments affecting their quality of life. Scientific studies focusing on standing balance training in the iSCI population are limited. Virtual reality-based balance training has shown positive results in several neurological populations. Electrical stimulation has also proved to be effective in improving voluntary muscle strength in partially paralyzed muscles after iSCI as well as promoting neuroplasticity. Methods: Forty-eight iSCI participants will be recruited based on the inclusion criteria. The participants will be randomly assigned to any of the three groups: virtual reality-based balance training along with the electrical stimulation group, virtual reality-based balance training along with sham stimulation group, or virtual reality-based balance training group. The intervention will be delivered as 60-minute sessions, thrice a week for 4 weeks. Results: The performance of the participants will be assessed using the lower extremity motor score, static and dynamic balance assessment using TechnoBody ProKin tilting platform and Berg Balance Scale, Walking Index for Spinal Cord Injury, and World Health Organization Quality of Life-BREF at pre-intervention, after 4 weeks post-intervention, and at 1-month follow-up. Conclusions: The trial will provide new knowledge about the effectiveness of electrical stimulation-augmented virtual reality training in improving balance in individuals with iSCI. The study results will contribute to the design of better rehabilitation programs for individuals with iSCI.

Research Trends of Coronavirus: Bibliometric Analysis from 1989-2019

Shiv Singh,Sanjay Kataria,Tulika Dey 건국대학교 GLOCAL(글로컬)캠퍼스 지식콘텐츠연구소 2021 International Journal of Knowledge Content Develop Vol.11 No.4

The world is going through the most unprecedented time with the outbreak of novel Coronavirus disease (COVID-19), which has become a threat to millions. A Coronavirus is a group of viruses that cause a variety of diseases in mammals and birds leading to a range of illnesses in humans including common cold and more severe forms like severe acute respiratory syndrome Coronavirus (SARS-CoV), Middle East respiratory syndrome Coronavirus (MERS-CoV) and COVID-19, which are life-threatening. The virus gets its name from its shape which takes the form of a crown with protrusions around it. In December 2019, a pneumonia outbreak was reported in the Wuhan City of China, which was later traced to a novel strain of Coronavirus and termed as Novel COVID-19. It typically causes flu-like symptoms including fever, cough and shortness of breath and is transmitted through human-to-human and there is no cure for it till now. Thus, this bibliometric study has been carried out to analyze the research progress in Coronavirus and literature published during a period of 30 years (1989-2019). Data for the study were fetched from Web of Science(WoS) multidisciplinary database and the publication trends in terms of total articles, productive countries, institutions, journals, productive authors, most cited articles and authors, etc have been analyzed. In total, 4917 articles were retrieved; these were from 711 sources and were contributed by 14442 authors. The collaboration index was 3.11, which clearly indicates that there has been a lot of collaboration in this field. The most preferred journal for the study period was “Journal of Virology” and the maximum contribution has been from the University of Hong Kong.

Improved Photovoltaic Performance of Ternary All-Polymer Solar Cells by Incorporating a New Y6-based Polymer Acceptor and PC61BM

Hong Diem Chau,Meenal Kataria,권나연,박수홍,김영서,강훈구,Amit Kumar Harit,우한영,윤효재,박성남,조민주,최동훈 한국고분자학회 2022 Macromolecular Research Vol.30 No.8

Recently, all-polymer solar cells (all-PSCs) have realized significantly improved power conversion efficiencies (PCEs) through the development of various high-performance polymer donors and polymer acceptors. In addition, their device efficiency has been maximized using numerous strategies, such as thermal annealing and adding additives. In this study, we synthesized a new low-bandgap polymer acceptor (PTPB-TT) for application in all-PSCs. PTPB-TT exhibited adequate energy levels as a polymer acceptor and efficient complementary absorption behavior in the blend film. Moreover, we introduced a ternary system with [6,6]-phenyl-C61-butyric acid methyl ester (PC61BM) as the third-component acceptor to improve the light-harvesting properties and morphology of the binary blend film. PC61BM realizes the cascade energy levels in the ternary system, enabling more efficient charge transfer between the donor and the acceptor polymers than in the binary system. Therefore, the corresponding ternary devices displayed a relatively high PCE of 8.03% compared to the binary all-PSCs.

SmartHealth: An intelligent framework to secure IoMT service applications using machine learning

Rani Sita,Kumar Sachin,Kataria Aman,Min Hong 한국통신학회 2024 ICT Express Vol.10 No.2

Due to the complex functioning of Smart Healthcare Systems (SHS), many security concerns have been raised in the past. It provisions the attackers to hamper the working of SHS in a variety of ways, e.g., injection of false data to replace vital signs, tampering of medical devices to prevent informing critical situations, etc. In this work, a novel ML-based framework, i.e., SmartHealth is proposed to secure IoMT devices in SHS. SmartHealth watches the vital signs gathered through different IoMT to analyze the change in various body activities to differentiate between normal activities and dangerous security attacks. The performance of the SmartHealth is also analyzed for three different dangerous attacks. During performance analysis, it has been observed that SmartHealth can identify wicked activities in IoMT 92% times accurately with an F1-score of 90%.

Enhancement in Leghemoglobin Content of Root Nodules by Exclusion of Solar UV-A and UV-B Radiation in Soybean

( Swapnil Chouhan ),( Kanchan Chauhan ),( Sunita Kataria ),( Guruprasad KN ) 한국식물학회 2008 Journal of Plant Biology Vol.51 No.2

The impact of exclusion of solar UV-B (280-320 nm) and UV-A+B (280-400 nm) radiation on the root nodules was studied in soybean (Glycine max var. MACS 330). Soybean plants were grown in the tropical region of Indore (Latitude-22.4°N), India under field conditions in metal cages covered with polyester exclusion filters that specifically cut off UV-B (<320 nm) and UV-A+B (<400 nm) radiation; control plants were grown under ambient solar radiation. Leghemoglobin content was analyzed in the root nodules on the 50th day after emergence of seedlings. Exclusion of UV radiations significantly enhanced the leghemoglobin content in the nodules on fresh weight basis; 25% and 45% higher amount of leghemoglobin were present in the nodules after the exclusion of UV-B and UV-A+B radiation respectively. Analysis by native and SDS-PAGE showed high intense bands of leghemoglobin after the exclusion of UV-A+B as compared to control. Exclusion of UV radiation also enhanced the growth of roots as well as aerial parts of the plants. UV Exclusion increased nodulation by increase in the number and size of nodules. The results are discussed in the light of advantage of exclusion for enhancing protein/nitrogen content in the plants.