Search Results - Cheng Xu
Cheng Xu
Cheng Xu is a Chinese American aerodynamic design engineer and engineering manager. He is a Fellow of the American Society of Mechanical Engineers and a member of the Technical Committee on Energy and Power Systems, IASTED. He also served as a guest editor of International Journal of Rotating Machinery.Xu has made important contributions to the three-dimensional aerodynamic design and turbomachinery research. He is one of the foremost pioneers of the three-dimensional centrifugal compressor impeller, diffuser design, axial compressor blade design, turbine blade, turbine endwall optimization with efficiency and cooling effectiveness, and gas turbine LPT and nozzle optimization in the field of turbomachinery. He has performed advanced aerodynamic research and applied his research results to industry turbomachinery design. He developed a three-dimensional viscous optimization design procedure for industry turbomachinery aerodynamic and heat transfer design. He was one of the pioneers that helped develop high efficiency and wide operating range centrifugal compressor and axial compressor compressors. He has published many papers in peer-reviewed academic journals and refereed conferences. In 2006, Xu was awarded the 2006 Best Paper Award from ASME for his paper ''A study of Single Stage Centrifugal Compressor''. His papers are also cited widely by many researchers. Provided by Wikipedia
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The higher mapping cone axiom
Published 2025-07-01Get full textThe aim of the article is to better understand the higher octahedral axiom of nn-angulated categories. We discuss several possible additional axioms for pre-nn-angulated categories and prove that they are all equivalent to the higher octahedral axiom.
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Investigation and Analysis of the Acceptance of the License Plate–Based Restriction Policy: A Case Study in Hangzhou, China
Published 2025-01-01Get full textIn order to better understand the factors that affect Hangzhou residents’ acceptance of the license plate–based restriction (LPR) policy, new factors such as fairness, family life cycle factors, and preacceptance of alternative measures were added to explore new interactions between different factor...
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Resolution-Enhanced Ptychographic Modulation Imaging via Divergent Illumination
Published 2024-01-01Get full textBy inserting a modulator in the imaging system and scanning in different positions, ptychographic modulation imaging can achieve higher quality reconstruction for smooth or weakly scattered objects compared to conventional ptychography imaging. However, its imaging resolution is still limited by the...
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Unveiling the hidden diversity: the second species of Wenchengia (Lamiaceae) discovered from a dry mountaintop meadow of Hainan Island, China
Published 2025-07-01Get full textWenchengia wui, a remarkable new species of Wenchengia endemic to a dry mountaintop meadow of Sanya City, Hainan Province, southern China, is described and illustrated. The new species is readily distinguished from the only other extant species, W. alternifolia, by its opposite phyllotaxy, oblong-ov...
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Physiological basis for the differences of productive capacity among tillers in winter wheat
Published 2015-10-01Get full textThe quality or structure of a wheat population is significantly affected by the compositions of tillers. Little has been known about the physiological basis for the differences of productive capacity among tillers. Two winter wheat cultivars, Shannong 15 (SN15) and Shannong 8355 (SN8355), were used...
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Association of benzene exposure and atrial fibrillation in a national cohort: The modifying effect of genetic susceptibility
Published 2025-09-01Get full textBackground: Exposure to benzene poses significant health risks, with cardiovascular toxicity emerging as a primary adverse effect. However, the exact influence of benzene on the development of atrial fibrillation (AF) remains unclear. The occurrence of AF is influenced by environmental factors and g...
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A clinical comparative study on three surgical approaches for the removal of impacted supernumerary teeth in the midline area of the anterior maxilla
Published 2025-05-01Get full textObjective To evaluate the efficacy and safety of different surgical approaches for extracting high-positioned supernumerary teeth in the maxillary anterior midline region. Three surgical methods, the labial approach, the palatal approach, and a longitudinal incision beside the upper lip frenum were...
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An Optical Date Flip-Flop Based on the Dynamic Coding of a Layered VO<sub>2</sub> Metastructure
Published 2025-06-01Get full textA vanadium dioxide (VO<sub>2</sub>)-based layered metastructure is proposed that enables dynamic optical encoding in the range of 15.5 GHz to 16 GHz through synergistic temperature and magnetic field modulation. By utilizing sequential temperature control, an optical date flip-flop (DFF)...
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Study onthe Preparation and Performance of Novel Waterborne Epoxy Zinc-Rich Coating
Published 2021-06-01Get full textIn order to meet the requirement of durability in the field of heavy anti-corrosion coating, a waterborne epoxy zinc-rich primer with strong corrosion resistance and high storage stability was prepared by adjusting the proportion of zinc powder in the epoxy zinc-rich coating, adding silane coupling...
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Photosynthetic performance of switchgrass and its relation to field productivity: A three-year experimental appraisal in semiarid Loess Plateau
Published 2017-06-01Get full textTo reveal photosynthetic characteristics and biomass yield is important for evaluating introduced species adaptation to local environments. A field experiment was conducted over three consecutive years (2011–2013) to evaluate photosynthetic characteristics, soil water content, aboveground biomass ac...
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Efficient Phase Retrieval via Improved Binary Amplitude Modulation Masks
Published 2024-01-01Get full textConventional iterative phase retrieval suffers from an inherent phase ambiguity due to limited measurement intensity. Multimodal amplitude modulation introduces physical constraints to tackle the underdetermination challenge. However, the time overhead caused by mask switching slows down the imaging...
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Vector Effects of Dissipative Soliton in All-Fiber MOPA System
Published 2019-01-01Get full textThe performance of seed laser source will have a great impact on the output pulse quality of the master oscillator power amplifier (MOPA) system. Here, we report the influence of the soliton vector features on the pulse uniformity in an all-fiber MOPA configuration. We demonstrated that, although th...
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Visitors’ positive emotions in National Forest Parks: Nonlinear and threshold effects of landscape attributes across seasons and urban gradients
Published 2025-09-01Get full textNational Forest Parks (NFPs) on the outskirts of cities provide visitors with forest therapy and ecotourism experiences. However, the nonlinear and threshold effects of key landscape attributes on visitors’ positive emotions, as well as their seasonal and urban gradient variations, remain poorly und...
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Effects of Root Pruning on Non-Hydraulic Root-Sourced Signal, Drought Tolerance and Water Use Efficiency of Winter Wheat
Published 2013-06-01Get full textTwo pot experiments were conducted to study the effects of root pruning at the stem elongation stage on non-hydraulic root-sourced signals (nHRS), drought tolerance and water use efficiency of winter wheat (Triticum aestivum). The root pruning significantly reduced the root weight of wheat, but had...
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Multivalent Co-assembly of LL37-CpG nanoparticles: Enhanced immune response through activating multiple cell internalization pathways
Published 2025-08-01Get full textRecent studies have demonstrated that the human antimicrobial peptide LL37 plays a critical role in immune regulation under both normal physiological conditions and during disease progression, as evidenced by its elevated levels observed in various chronic inflammatory diseases. A deeper understandi...
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Predicting recurrence and recurrence-free survival in initially unresectable hepatocellular carcinoma: a novel nomogram for patients undergoing conversion hepatectomy with lenvatin...
Published 2025-07-01Get full textPurposeThis research aims to develop prognostic nomograms to predict tumor recurrence and recurrence-free survival (RFS) in individuals with initially unresectable hepatocellular carcinoma (uHCC) who were later subjected to conversion hepatectomy following lenvatinib, PD-1 inhibitors, and interventi...
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Switchgrass as a bioenergy crop in the Loess Plateau, China: Potential lignocellulosic feedstock production and environmental conservation
Published 2017-06-01Get full textA large portion of the Loess Plateau of China is characterized as “marginal” with serious land degradation and desertification problems. Consequently, two policies, Grain for Green and Western Development Action were established by the Chinese government in response to the demand for ecological prot...
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An efficient brain delivery system co-loaded with multiple components of Salvia miltiorrhiza for synergistic treatment of ischemic stroke
Published 2025-10-01Get full textIschemic stroke is a neurological disease characterized by high morbidity and mortality. A key pathological mechanism involves rapid restoration of blood oxygen in the infarcted area, which triggers oxidative stress and inflammatory responses leading to neuronal damage. The complex etiology of the d...
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Soliton Booting Dynamics in an Ultrafast Anomalous Dispersion Fiber Laser
Published 2018-01-01Get full textWe reported on the soliton booting dynamics of an ultrafast fiber laser operating in an anomalous dispersion regime. Based on the advanced experimental methodologies of spatio-temporal reconstruction and dispersive Fourier transform (DFT), the soliton booting dynamics are analyzed in the time and sp...
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Hypoxia‐induced PGK1 expression promotes esophageal squamous cell carcinoma progression via stimulating MYH9‐mediated GSK3β/β‐catenin signalling
Published 2025-06-01Get full textAbstract Background Phosphoglycerate kinase 1 (PGK1) serves as a critical metabolic enzyme in the process of glycolysis and has many nonmetabolic functions in tumour progression. One of the most prevalent malignant tumours is still esophageal squamous cell carcinoma (ESCC), with high recurrence rate...
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