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World j.urnal of Cardiology 2024年第7期16卷 402-411页

作者： Taha Teaima Gianfranco Bittar Carlini rohan A Gaj.ar Imran Aziz Sami j.Shoura Abdul-Rahim Shilbayeh Naim Battikh Tareq Alyousef Division of Cardiology Department of MedicineJohn H.StrogerJr.Hospital of Cook CountyChicagoIL 60612United States

BACKGROUND Transcatheter aortic valve replacement(TAVR)is a revolutionary procedure for severe aortic *** coexistence of chronic kidney disease(CKD)and TAVR introduces a challenge that significantly impacts patient *** To define readmission rates,predictors,and causes after TAVR procedure in CKD stage 1-4 *** We used the national readmission database 2018 and 2020 to look into readmission rates,causes and predictors after TAVR procedure in patients with CKD stage *** Out of 24758 who underwent TAVR and had CKD,7892(32.4%)patients were readmitted within 90 days,and had higher adj.sted odds of being females(adj.sted odds ratio:1.17,95%CI:1.02-1.31,P=0.02)with longer length of hospital stay>6 days,and more comorbidities including but not limited to diabetes mellitus,anemia,and congestive heart failure(CHF).CONCLUSION Most common causes of readmission included CHF(18.0%),sepsis,and complete atrioventricular *** readmission predictors with very close followup is warranted to prevent such high rate of readmission.

关键词： Chronic kidney disease Transcatheter aortic valve replacement Readmission Predictors Rates

Performance Comparison of DCT and VQ Based Techniques for Iris Recognition

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j.urnal of Electronic Science and Technology 2010年第3期8卷 223-229页

作者： H.B.Kekre Tanuj. K. Sarode Vinayak Ashok Bharadi Abhishek A. Agrawal rohan j. arora Mahesh C. Nair MPSTME NMIMS University Thadoamal Shahani Engg.College Bandra (w) MPSTME NMIMS Universityand Thakur Engg.College

Iris recognition enj.ys universality, high degree of uniqueness and moderate user co-operation. This makes iris recognition systems unavoidable in emerging security ＆ authentication mechanisms. An iris recognition system based on vector quantization （VQ） techniques is proposed and its performance is compared with the discrete cosine transform （DCT）. The proposed system does not need any pre-processing and segmentation of the iris. We have tested Linde-Buzo- Gray （LBG）, Kekre＇s proportionate error （KPE） algorithm and Kekre＇s fast codebook generation （KFCG） algorithm for the clustering purpose. Proposed vector quantization based method using KFCG requires 99.99% less computations as that of full 2-dimensional DCT. Further, the KFCG method gives better performance with the accuracy of 89.10% outperforming DCT that gives accuracy around 66.10%.

关键词： Biometrics discrete cosine transform iris recognition Kekre's fast codebook generation Kekre's proportionate error Linde Buzonad Gray vector quantization.

Transfer Learning Model to Indicate Heart Health Status Using Phonocardiogram

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Computers, Materials & Continua 2021年第12期69卷 4151-4168页

作者： Vinay arora Karun Verma rohan Singh Leekha Kyungroul Lee Chang Choi Takshi Gupta Kashish Bhatia Department of Computer Science and Engineering Thapar Institute of Engineering and TechnologyPatialaPunjabIndia Associate Application ITConcentrixGurugramHaryanaIndia School of Computer Software Daegu Catholic UniversityGyeongsanKorea Department of Computer Engineering Gachon UniversitySeongnam13120Korea Information Security Engineering Soonchunhyang UniversityKorea Department of Computer Engineering University College of EngineeringPunjabi UniversityPatialaPunjabIndia

The early diagnosis of pre-existing coronary disorders helps to control complications such as pulmonary hypertension,irregular cardiac functioning,and heart ***-based learning of heart sound is an efficient technology which can help minimize the workload of manual auscultation by automatically identifying irregular cardiac ***(PCG)and electrocardiogram(ECG)waveforms provide the much-needed information for the diagnosis of these *** this work,the researchers have converted the heart sound signal into its corresponding repeating pattern-based *** 2016 and PASCAL 2011 have been taken as the benchmark datasets to perform *** existing models,***,Xception,Visual Geometry Group(VGG16),ResNet,DenseNet,and InceptionV3 of Transfer Learning have been used for classifying the heart sound signals as normal and *** PhysioNet 2016,DenseNet has outperformed its peer models with an accuracy of 89.04 percent,whereas for PASCAL 2011,VGG has outperformed its peer approaches with an accuracy of 92.96 percent.

关键词： PCG signals transfer learning repeating pattern-based spectrogram biomedical signals internet of things(IoT)

XGBoost model for electrocaloric temperature change prediction in ceramics

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npj.Computational Materials 2022年第1期8卷 1308-1317页

作者： j.e Gong Sharon Chu rohan K.Mehta Alan j.H.McGaughey Department of Mechanical Engineering Carnegie Mellon UniversityPittsburghPA15213USA

An eXtreme Gradient Boosting(XGBoost)machine learning model is built to predict the electrocaloric(EC)temperature change of a ceramic based on its composition(encoded by Magpie elemental properties),dielectric constant,Curie temperature,and characterization conditions.A dataset of 97 EC ceramics is assembled from the experimental *** sampling data from clusters in the feature space,the model can achieve a coefficient of determination of 0.77 and a root mean square error of 0.38 K for the test *** analysis shows that the model captures known physics for effective EC *** Magpie features help the model to distinguish between materials,with the elemental electronegativities and ionic charges identified as key *** model is applied to 66 ferroelectrics whose EC performance has not been ***-free candidates with a predicted EC temperature change above 2 K at room temperature and 100 kV/cm are identified.

关键词： ceramics materials ceramic

Efficient strategies for leave-one-out cross validation for genomic best linear unbiased prediction

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j.urnal of Animal Science and Biotechnology 2017年第3期8卷 733-737页

作者： Hao Cheng Dorian j.Garrick rohan L.Fernando Department of Animal Science Iowa State University50011AmesIowaUSA Department of Statistics Iowa State University50011AmesIowaUSA Institute of Veterinary Animal&Biomedical ScienceMassey UniversityPalmerston NorthNew Zealand

Background： A random multiple-regression model that simultaneously fit all allele substitution effects for additive markers or haplotypes as uncorrelated random effects was proposed for Best Linear Unbiased Prediction, using whole-genome data. Leave-one-out cross validation can be used to quantify the predictive ability of a statistical ***： Naive application of Leave-one-out cross validation is computationally intensive because the training and validation analyses need to be repeated n times, once for each observation. Efficient Leave-one-out cross validation strategies are presented here, requiring little more effort than a single ***： Efficient Leave-one-out cross validation strategies is 786 times faster than the naive application for a simulated dataset with 1,000 observations and 10,000 markers and 99 times faster with 1,000 observations and 100 markers. These efficiencies relative to the naive approach using the same model will increase with increases in the number of ***： Efficient Leave-one-out cross validation strategies are presented here, requiring little more effort than a single analysis.

关键词： Leave-one-out cross validation GBLUP

Impact of Flow Rate in Integration with Solar Radiation on Color and COD Removal in Dye Contaminated Textile Industry Wastewater:Optimization Study

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Energy Engineering 2022年第1期119卷 419-427页

作者： Pradeep K.Maj.i Rifat Azam Richa Kothari Naveen Kumar arora V.V.Tyagi Department of Environmental Sciences Babasaheb Bhimrao Ambedkar UniversityLucknow226025U.P.India Department of Environmental Sciences Central University of JammuRahya-SuchaniBaglaSamba181143J&KIndia School of Energy Management Shri Mata Vaishno Devi UniversityKatra182320J&KIndia

Dyes are an integral part of the dying industry and have significantly resulted in environmental pollution by altering the standardwater quality after their discharge into the water *** culprits behind the altered water quality are the pretreatment chemicals used during dying manufacturing *** advanced treatmentmethods using conventional and advanced treatment options including solar energy have been put forth by researchers for the treatment of the dying effluents but,these methods have not proved significantly ***,the present study intends to check the efficiency of solar parabolic trough collector for treating the dying effluents in terms of color and ***,other wastewater parameters(BOD,nitrate and phosphate)have also been considered for this experimental *** standard flow rates(0.5,1.3,1.95 and 2.6 L/M)were maintained during the experiment for six hours at solar intensity(849.3±21.2W/m^(2))and the optimized flow rate(1.95 L/M)was detected and considered for further study during the present *** color concentration showed a significant reduction(≥76.4%)by treatment with the designed solar *** significant results were also noticed in terms of COD(79%).In this context,the current experimental study provides ideas on the decolorization and COD reduction efficiency with optimal flow rate in terms of cost-effectiveness with designed experimental reactor which could be further used and implemented for advanced scientific purposes.

关键词： Dye industry effluents decolorization renewable energy-based treatment lab-scale experiment

No evidence for increased cell entry or antibody evasion by Delta sublineage AY.4.2

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Cellular & Molecular Immunology 2022年第3期19卷 449-452页

作者： Prerna arora Amy Kempf Inga Nehlmeier Luise Graichen Martin S.Winkler Martin Lier Sebastian Schulz Hans-Martin j.ck Stefan Pöhlmann Markus Hoffmann Infection Biology Unit German Primate CenterKellnerweg 437077GöttingenGermany Faculty of Biology and Psychology Georg-August-University GöttingenWilhelmsplatz 137073GöttingenGermany Department of Anesthesiology University of Göttingen Medical CenterGeorg-August University GöttingenRobert-Koch-Straße 4037075GöttingenGermany Division of Molecular Immunology Department of Internal Medicine 3Friedrich-Alexander University Erlangen-NürnbergGlückstraße 691054ErlangenGermany

Since the beginning of the COVID-19 pandemic,multiple SARS-CoV-2 variants have *** some variants spread only locally,others,referred to as variants of concern,disseminated globally and became drivers of the *** SARS-CoV-2 variants harbor mutations relative to the virus circulating early in the pandemic,and mutations in the viral spike(S)protein are considered of particular relevance since the S protein mediates host cell entry and constitutes the key target of the neutralizing antibody *** a consequence,mutations in the S protein may increase SARS-CoV-2 infectivity and enable its evasion of neutralizing ***,mutations in the S protein can modulate viral transmissibility and pathogenicity.

关键词： SARS-CoV-2 AY.4.2 Delta Host cell entry Antibody evasion

Efficient antibody evasion but reduced ACE2 binding by the emerging SARS-CoV-2 variant B.1.640.2

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Cellular & Molecular Immunology 2022年第9期19卷 1067-1069页

作者： Prerna arora Amy Kempf Inga Nehlmeier Luise Graichen Sebastian Schulz Anne Cossmann Alexandra Dopfer-j.blonka Martin S.Winkler Hans-Martin j.ck Georg M.N.Behrens Stefan Pöhlmann Markus Hoffmann Infection Biology Unit German Primate CenterKellnerweg 437077GöttingenGermany Faculty of Biology and Psychology Georg-August-University GöttingenWilhelmsplatz 137073GöttingenGermany Division of Molecular Immunology Department of Internal Medicine 3Friedrich-Alexander University of Erlangen-NürnbergGlückstraße 691054ErlangenGermany Department for Rheumatology and Immunology Hannover Medical SchoolCarl-Neuberg-Straße 130625HannoverGermany German Centre for Infection Research(DZIF) Partner Site Hannover-BraunschweigHannoverGermany Centre for Individualised Infection Medicine(CiiM) HannoverGermany Department of Anesthesiology University of Göttingen Medical CenterGöttingenGeorg-August University of GöttingenRobert-Koch-Straße 4037075GöttingenGermany

The SARS-CoV-2 spike(S)protein engages ACE2 for cell entry,and the S protein/ACE2 interface is an important target for neutralizing *** the course of the COVID-19 pandemic,SARS-CoV-2 variants have emerged that harbor mutations in the S protein,which confer neutralization resistance and allow viral spread in immunologically nonnaive *** most prominent example is the highly mutated Omicron variant,which infects convalescent or vaccinated individuals with unprecedented efficiency[1,2].

关键词： ACE2 harbor neutral

Investigation of coupled cobalt-silver nanoparticle system by plan view TEM

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Progress in Natural Science:Materials International 2012年第3期22卷 186-192页

作者： Daniel Fox Ruggero Verre Brendan j. O'Dowd Sunil K. arora Colm C. Faulkner Igor V. Shvets School of Physics and CRANN Trinity College Dublin CRANN Advanced Microscopy Laboratory Trinity College Dublin

We present a transmission electron microscopy (TEM) investigation of a coupled cobalt and silver nanoparticle system. A plan view in situ lift-out method for preparing samples for TEM using the focused ion beam (FIB) microscope was used. This technique is used to prepare high quality TEM samples with site specificity in a short time and with a high success rate. We demonstrate the ability of the plan view sample preparation technique to provide information about an ordered system of nanoparticles which could not be observed using standard FIB cross sectioning of the sample. High resolution TEM and energy dispersive X-ray spectroscopy mapping of both cross sectional and plan view samples are presented, clearly showing the significant benefit of plan view TEM analysis for certain samples.

关键词： Focused ion beam Transmission electron microscopy Lift-out Co Ag Nanoparticle

Host cell entry and neutralisation sensitivity of the SARS-CoV-2 XBB.1.16 lineage

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Cellular & Molecular Immunology 2023年第8期20卷 969-971页

作者： Inga Nehlmeier Amy Kempf Prerna arora Anne Cossmann Alexandra Dopfer-j.blonka Metodi V.Stankov Sebastian R.Schulz Hans-Martin j.ck Georg M.N.Behrens Stefan Pöhlmann Markus Hoffmann Infection Biology Unit German Primate Center—Leibniz Institute for Primate ResearchKellnerweg 437077GöttingenGermany Faculty of Biology and Psychology Georg-August-University GöttingenWilhelmsplatz 137073GöttingenGermany Department of Rheumatology and Immunology Hannover Medical SchoolCarl-Neuberg-Straße 130625HannoverGermany German Centre for Infection Research(DZIF) Partner Site Hannover-BraunschweigCarl-Neuberg-Straße 130625HannoverGermany Division of Molecular Immunology Department of Internal Medicine 3Friedrich-Alexander University of Erlangen-NürnbergGlückstraße 691054ErlangenGermany Centre for Individualized Infection Medicine(CiiM) Feodor-Lynen-Straße 730625HannoverGermany

Despite previous circulation of the highly transmissible and antibody evasive BA.2.75, BQ.1, XBB.1 and XBB.1.5 lineages, the share of infections caused by the SARS-CoV-2 lineage XBB.1.16 has gradually increased in India in early 2023, resulting in XBB.1.16 being the dominating SARS-CoV-2 lineage in India today. Since a similar trend may also take place in other countries and information on the biological properties of the XBB.1.16 lineage is scarce, we conducted a rapid assessment of the SARS-CoV-2 XBB.1.16 lineage with respect to its ability to enter cells and evade neutralisation by antibodies.

关键词： lineage neutral spite