Chengxu Liu

ORCID: 0000-0001-8023-9465
Publications
Citations
Views
---
Saved
---
About
Contact & Profiles
Research Areas
  • Bacterial Identification and Susceptibility Testing
  • Genomics and Phylogenetic Studies
  • Advanced Image Processing Techniques
  • Oral microbiology and periodontitis research
  • Clostridium difficile and Clostridium perfringens research
  • Gut microbiota and health
  • Image Processing Techniques and Applications
  • Image Enhancement Techniques
  • Advanced Vision and Imaging
  • Streptococcal Infections and Treatments
  • Machine Fault Diagnosis Techniques
  • Image and Signal Denoising Methods
  • Probiotics and Fermented Foods
  • Mycobacterium research and diagnosis
  • Fault Detection and Control Systems
  • Diphtheria, Corynebacterium, and Tetanus
  • Anomaly Detection Techniques and Applications
  • Image and Video Quality Assessment
  • Salmonella and Campylobacter epidemiology
  • Advanced Optical Imaging Technologies
  • Gear and Bearing Dynamics Analysis
  • Infective Endocarditis Diagnosis and Management
  • Antimicrobial Resistance in Staphylococcus
  • Dermatology and Skin Diseases
  • Skin Protection and Aging

Xi'an Jiaotong University
2020-2025

Microsoft Research Asia (China)
2023

Ludong University
2022

Zhejiang University of Technology
2022

Procter & Gamble (United States)
2015-2016

VA West Los Angeles Medical Center
2007-2012

West Los Angeles College
2002-2011

Wadsworth Public Library
2007

Cedars-Sinai Medical Center
2006

VA Greater Los Angeles Healthcare System
2004

Some cases of late-onset (regressive) autism may involve abnormal flora because oral vancomycin, which is poorly absorbed, lead to significant improvement in these children. Fecal children with regressive was compared that control children, and clostridial counts were higher. The number species found the stools greater than Children had 9 Clostridium not controls, whereas controls yielded only 3 autism. In all, there 25 different found. gastric duodenal specimens, most striking finding total...

10.1086/341914 article EN Clinical Infectious Diseases 2002-09-01

ABSTRACT Based on the hypothesis that intestinal clostridia play a role in late-onset autism, we have been characterizing from stools of autistic and control children. We applied TaqMan real-time PCR procedure to detect quantitate three Clostridium clusters one species, C. bolteae , stool specimens. Group- species-specific primers targeting 16S rRNA genes were designed, specificity was confirmed with DNA related bacterial strains. In this procedure, linear relationship exists between...

10.1128/aem.70.11.6459-6465.2004 article EN Applied and Environmental Microbiology 2004-11-01

Video super-resolution (VSR) aims to restore a sequence of high-resolution (HR) frames from their low-resolution (LR) counterparts. Although some progress has been made, there are grand challenges effectively utilize temporal dependency in entire video sequences. Existing approaches usually align and aggregate limited adjacent (e.g., 5 or 7 frames), which prevents these satisfactory results. In this paper, we take one step further enable effective spatio-temporal learning videos. We propose...

10.1109/cvpr52688.2022.00560 article EN 2022 IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR) 2022-06-01

High-resolution networks have made significant progress in dense prediction tasks such as human pose estimation and semantic segmentation. To better explore this high-resolution mechanism on mobile devices, Lite-HRNet incorporates shuffle operations to reduce computational complexity the channel dimension, while Dite-HRNet employs dynamic convolution pooling capture long-range interactions with low spatial dimension. The core idea behind both approaches is efficiently information either or...

10.1109/tcsvt.2024.3377365 article EN IEEE Transactions on Circuits and Systems for Video Technology 2024-03-18

Two groups of previously unknown Gram-negative, strictly anaerobic, pigment-producing, rod-shaped bacteria, which phenotypically and phylogenetically displayed a close association with the recently described species Alistipes finegoldii , were characterized using phenotypic molecular taxonomic methods. A 16S rRNA gene sequence divergence approximately 3 % between two bacteria A. as well distinguishable biochemical characteristics, demonstrates that these organisms are genotypically distinct...

10.1099/ijs.0.64318-0 article EN INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY 2006-08-01

Fine-grained food recognition is the detailed classification that provides more specialized and professional attribute information of food. It basic work to realize healthy diet recommendations cooking instructions, nutrition intake management, cafeteria self-checkout system. Chinese lacks structured information, ingredients composition an important consideration. The current approaches mostly focus on global dish appearance without any analysis ingredient fully considering attention...

10.1109/tcsvt.2020.3020079 article EN IEEE Transactions on Circuits and Systems for Video Technology 2020-08-28

Image enhancement aims at improving the aesthetic visual quality of photos by retouching color and tone, is an essential technology for professional digital photography. Recent years deep learning-based image algorithms have achieved promising performance attracted increasing popularity. However, typical efforts attempt to construct a uniform enhancer all pixels' transformation. It ignores pixel differences between different content (e.g., sky, ocean, etc.) that are significant photographs,...

10.1109/tip.2023.3290849 article EN IEEE Transactions on Image Processing 2023-01-01

The activities of OPT-80 against 453 intestinal bacteria were compared with those seven other drugs. showed good activity most clostridia, staphylococci, and enterococci, but streptococci, aerobic facultative gram-negative rods, anaerobic Clostridium ramosum resistant. Poor rods may maintain colonization resistance.

10.1128/aac.48.12.4898-4902.2004 article EN Antimicrobial Agents and Chemotherapy 2004-11-24

We report a rapid and reliable two-step multiplex polymerase chain reaction (PCR) assay to identify the 10 Bacteroides fragilis group species - caccae, B. distasonis, eggerthii, fragilis, merdae, ovatus, stercoris, thetaiotaomicron, uniformis vulgatus. These were first divided into three subgroups by PCR-G, followed PCR assays with species-specific primer mixtures for identification level. The primers designed from nucleotide sequences of 16S rRNA, 16S-23S rRNA intergenic spacer region part...

10.1016/s0378-1097(03)00296-9 article EN FEMS Microbiology Letters 2003-05-01

Three groups of previously unknown gram-positive, anaerobic, coccus-shaped bacteria were characterized using phenotypic and molecular taxonomic methods. Phenotypic genotypic data demonstrate that these organisms are distinct, each group represents a subline within Clostridium cluster XIII. Two most closely related to Peptoniphilus harei in the genus Peptoniphilus, other is Anaerococcus lactolyticus Anaerococcus. Based on findings, three novel species, gorbachii sp. nov., olsenii murdochii...

10.1128/jcm.00213-07 article EN Journal of Clinical Microbiology 2007-04-12

ABSTRACT Sequence analysis of the 16S rRNA gene represents a highly accurate and versatile method for bacterial classification identification, even when species in question is notoriously difficult to identify by phenotypic means. However, its use identification based on public sequence databases not without limitation due presence ambiguous data databases. In this study, we evaluated utility ribosomal DNA sequencing as means identifying clinically important gram-positive anaerobic cocci...

10.1128/jcm.41.4.1363-1369.2003 article EN Journal of Clinical Microbiology 2003-04-01

Phenotypic and phylogenetic studies were performed on two isolates of an unidentified Gram-positive, anaerobic, non-spore-forming, rod-shaped bacterium that was isolated from human faeces. The organisms catalase-negative, produced acetic butyric acids as end products metabolism possessed a DNA G+C content approximately 54 mol%. Comparative 16S rRNA gene sequencing demonstrated the related closely to each other formed hitherto unknown sublineage within Clostridium leptum cluster organisms....

10.1099/ijs.0.02653-0 article EN INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY 2004-03-01

Video frame interpolation (VFI) aims to synthesize an intermediate between two consecutive frames. State-of-the-art approaches usually adopt a two-step solution, which includes 1) generating locally-warped pixels by calculating the optical flow based on pre-defined motion patterns (e.g., uniform motion, symmetric motion), 2) blending warped form full through deep neural synthesis networks. However, for various complicated motions non-uniform turn around), such improper assumptions about...

10.1109/tip.2023.3302990 article EN IEEE Transactions on Image Processing 2023-01-01

ABSTRACT Phenotypic and phylogenetic studies were performed on an unknown gram-negative, strictly anaerobic, rod-shaped bacterium isolated from human clinical specimens. This organism was indole negative, resistant to 20% bile, produced acetic a lesser amount of succinic acids as the major end products glucose metabolism, possessed G+C content approximately 43 mol%. Comparative 16S rRNA gene sequencing demonstrated that unidentified member Cytophaga-Flavobacter-Bacteroides phylum...

10.1128/jcm.43.9.4522-4527.2005 article EN Journal of Clinical Microbiology 2005-09-01

Two strains of previously unknown Gram-stain-positive, anaerobic, coccus-shaped bacteria from human wound specimens were characterized using phenotypic and molecular taxonomic methods. Comparative 16S rRNA gene sequencing studies distinguishable biochemical characteristics demonstrated that these two strains, WAL 1855C T 2038E, are genotypically homogeneous constitute a novel lineage within Clostridium cluster XIII. There was 13–14 % sequence divergence between the most closely related...

10.1099/ijs.0.015909-0 article EN INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY 2009-11-03

Eleven clinical strains isolated from infected wound specimens were subjected to polyphasic taxonomic analysis. Sequence analysis of the 16S rRNA gene showed that all 11 phylogenetically related Slackia exigua. Additionally, conventional and biochemical tests 6 performed as supplementary methods obtain phenotypic identification by comparison with phenotypes relevant type strains. S. exigua has been considered an oral bacterial species in family Coriobacteriaceae. This organism is fastidious...

10.1128/jcm.01576-09 article EN Journal of Clinical Microbiology 2010-01-28
Coming Soon ...