Pengfei Zheng
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View article: Effects of Stand Age Gradient and Thinning Intervention on the Structure and Productivity of Larix gmelinii Plantations
Effects of Stand Age Gradient and Thinning Intervention on the Structure and Productivity of Larix gmelinii Plantations Open
Larix gmelinii is the fourth most important tree species in China and a typical zonal climax species in the cold temperate region, with high ecological and resource value. However, intensive logging, high-density afforestation, and insuffi…
View article: Two novel phages infecting Erythrobacter isolated from the epipelagic ocean
Two novel phages infecting Erythrobacter isolated from the epipelagic ocean Open
Erythrobacter , an aerobic anoxygenic photoheterotrophic bacterial genus, plays a vital role in carbon and energy cycling in marine environments. However, their phage predators remain poorly understood, with only two strains previously rep…
View article: CoffeeBoost: Gradient Boosting Native Conformal Inference for Bayesian Optimization
CoffeeBoost: Gradient Boosting Native Conformal Inference for Bayesian Optimization Open
Bayesian optimization (BO) is a key technique for solving black-box optimization problems. This study extends the scope of BO from conventional applications (e.g., AutoML and robotics learning) to automated tuning of software systems. Desp…
View article: Effect of interaction between bubbles and interfaces on irradiation hardening of vanadium alloy and ODS steel
Effect of interaction between bubbles and interfaces on irradiation hardening of vanadium alloy and ODS steel Open
View article: The Effect of Irradiation Dose and Temperature on Irradiation Hardening and Microstructure Study of Hot-Forged V-4Cr-4Ti Under Self-Ion Irradiation
The Effect of Irradiation Dose and Temperature on Irradiation Hardening and Microstructure Study of Hot-Forged V-4Cr-4Ti Under Self-Ion Irradiation Open
After being self-ion implanted at 400 °C and 550 °C, the microstructure and irradiation hardness of kilogram-scale V-4Cr-4Ti alloys were studied using a transmission electron microscope (TEM) and nano-indentation test technology. Irradiati…
View article: Microstructure Evolution During Room-Temperature Tensile Deformation and Trip Effect-Dominated Strength-Ductility Synergy Mechanism of (Fe40mn20co20cr15si5)100- X Cu X Dual Phase High Entropy Alloy Prepared by Friction Stir Cu Alloying
Microstructure Evolution During Room-Temperature Tensile Deformation and Trip Effect-Dominated Strength-Ductility Synergy Mechanism of (Fe40mn20co20cr15si5)100- X Cu X Dual Phase High Entropy Alloy Prepared by Friction Stir Cu Alloying Open
View article: Machine learning algorithms for the early detection of bloodstream infection in children with osteoarticular infections
Machine learning algorithms for the early detection of bloodstream infection in children with osteoarticular infections Open
Background Bloodstream infection (BSI) poses a significant life-threatening risk in pediatric patients with osteoarticular infections. Timely identification of BSI is crucial for effective management and improved patient outcomes. This stu…
View article: Effect of Ball Milling Parameters on Properties of Nano-Sized Tungsten Powder via Mechanochemical Processing
Effect of Ball Milling Parameters on Properties of Nano-Sized Tungsten Powder via Mechanochemical Processing Open
Nano-sized tungsten exhibits superior properties due to its high-density grain boundaries’ strengthening. The high-quality nano-sized powder is essential for sintering nano-sized tungsten bulks through powder metallurgy techniques. In this…
View article: Nonlinear modeling of ELM mitigation with RMP on HL-2A
Nonlinear modeling of ELM mitigation with RMP on HL-2A Open
Nonlinear modeling of mitigation of the edge localized mode (ELM) with resonant magnetic perturbation (RMP) is performed for the HL-2A tokamak, utilizing the three-dimensional (3D) magnetohydrodynamic code JOREK. Based on the 3D equilibriu…
View article: Application of AI-assisted MRI for the identification of surgical target areas in pediatric hip and periarticular infections
Application of AI-assisted MRI for the identification of surgical target areas in pediatric hip and periarticular infections Open
Objective To develop an AI-assisted MRI model to identify surgical target areas in pediatric hip and periarticular infections. Methods A retrospective study was conducted on the pediatric patients with hip and periarticular infections who …
View article: Significantly Enhanced Vacancy Diffusion in Mn-containing Alloys
Significantly Enhanced Vacancy Diffusion in Mn-containing Alloys Open
Manipulating point defects for tailored macroscopic properties remains a formidable challenge in materials science. This study demonstrates a proof-of-principle for a universal law involving element Mn, significantly enhancing vacancy diff…
View article: Study on irradiation hardening by He+ and subsequent V/self-ion irradiation in V-4Cr-4Ti under near-service conditions
Study on irradiation hardening by He+ and subsequent V/self-ion irradiation in V-4Cr-4Ti under near-service conditions Open
V-4Cr-4Ti was irradiated by He+ and subsequent V/self-ions at 773 K to simulate the effect of the damages generated under near-service conditions on irradiation hardening. Microstructure observation and hardness test were carried out by tr…
View article: The first plasma in a newly constructed linear device for plasma turbulence research
The first plasma in a newly constructed linear device for plasma turbulence research Open
Parameters of the first plasma in a newly built middle-size multi-functional linear plasma device named LEAD (Linear Experimental Advanced Device) were presented. The LEAD device is built to serve as a multi-purpose laboratory plasma exper…
View article: Irradiation Hardening and Microstructure Study of MAX-Phase-Dispersion-Strengthened Vanadium Alloy under Self-Ion Irradiation
Irradiation Hardening and Microstructure Study of MAX-Phase-Dispersion-Strengthened Vanadium Alloy under Self-Ion Irradiation Open
V-4Cr-4Ti alloy is one of the candidate structural materials for future fusion reactors due to its desirable characteristics. In our previous research, MAX-phase-dispersion-strengthened vanadium alloy (V-4Cr-4Ti-1.5Y-0.3Ti3SiC2), prepared …
View article: Effect of Interaction between Bubbles and Interfaces on Irradiation Hardening of Vanadium Alloy and Ods Steel
Effect of Interaction between Bubbles and Interfaces on Irradiation Hardening of Vanadium Alloy and Ods Steel Open
View article: First principles study on polarization and piezoelectric properties of group substitution regulated lead-free organic perovskite ferroelectrics
First principles study on polarization and piezoelectric properties of group substitution regulated lead-free organic perovskite ferroelectrics Open
Organic ferroelectrics are desirable for the applications in the field of wearable electronics due to their eco-friendly process-ability, mechanical flexibility, low processing temperatures, and lightweight. In this work, we use five organ…
View article: Machine learning algorithms for the early prediction of sepsis in children with bone and joint infections
Machine learning algorithms for the early prediction of sepsis in children with bone and joint infections Open
Objectives Early detection of sepsis is crucial in pediatric patients. This study employed machine learning algorithms to develop an artificial intelligence model for the early identification of sepsis in children with bone and joint infec…
View article: The pear genomics database (PGDB): a comprehensive multi-omics research platform for Pyrus spp.
The pear genomics database (PGDB): a comprehensive multi-omics research platform for Pyrus spp. Open
View article: Mirage: Towards Low-interruption Services on Batch GPU Clusters with Reinforcement Learning
Mirage: Towards Low-interruption Services on Batch GPU Clusters with Reinforcement Learning Open
Accommodating long-running deep learning (DL) training and inference jobs is challenging on GPU clusters that use traditional batch schedulers, such as Slurm. Given fixed wall clock time limits, DL researchers usually need to run a sequenc…
View article: Diffusion-assisted growth of periodic patterns on metal surfaces
Diffusion-assisted growth of periodic patterns on metal surfaces Open
View article: Formation of intermetallic and its effect on the hardening of welding joint between vanadium alloy and Hastelloy X alloy after heat treatment
Formation of intermetallic and its effect on the hardening of welding joint between vanadium alloy and Hastelloy X alloy after heat treatment Open
Vanadium alloy and Hastelloy X alloy was jointed by explosive welding (EXW), followed by post-weld heat treatment (PWHT). The formation of intermetallic within the welding joint and its effect on hardening were investigated. In terms of mo…
View article: Additional file 1 of The pear genomics database (PGDB): a comprehensive multi-omics research platform for Pyrus spp.
Additional file 1 of The pear genomics database (PGDB): a comprehensive multi-omics research platform for Pyrus spp. Open
Table S1: Profile of the 8 pear genomes available in the PGDB
View article: Additional file 3 of The pear genomics database (PGDB): a comprehensive multi-omics research platform for Pyrus spp.
Additional file 3 of The pear genomics database (PGDB): a comprehensive multi-omics research platform for Pyrus spp. Open
Table S3: Transcription factor and regulator gene families in 9 pear genomes
View article: Additional file 2 of The pear genomics database (PGDB): a comprehensive multi-omics research platform for Pyrus spp.
Additional file 2 of The pear genomics database (PGDB): a comprehensive multi-omics research platform for Pyrus spp. Open
Table S2: Functional annotations of pear genomes, including GO terms, KEGG pathways and InterPro terms
View article: Simulation of wall materials with isotope concentration gradient for corrosion degree calibration in ITER
Simulation of wall materials with isotope concentration gradient for corrosion degree calibration in ITER Open
In the ITER reactor, the degree of corrosion of the wall is monitored by detecting the concentration of the isotope injected into the wall to ensure safe operation. Therefore, a wall material with an isotope concentration gradient that can…
View article: Development of a Radio-Frequency Quadrupole Accelerator for the HL-2A/2M Tokamak Diagnostic System
Development of a Radio-Frequency Quadrupole Accelerator for the HL-2A/2M Tokamak Diagnostic System Open
In order to figure out the migration and deposition of impurities on the first wall of HL-2A/2M tokamak, Peking University and Southwestern Institute of Physics are co-developing a deuteron RFQ as part of the in situ ion-beam diagnostic fo…
View article: Controlling intermetallics formation at V-4Cr-4Ti/316SS laser-welded joint
Controlling intermetallics formation at V-4Cr-4Ti/316SS laser-welded joint Open
In a fusion reactor, the connection between the blanket and peripheral components is closely related to heat transfer. Therefore, the sound joining of the structural materials of the blanket and peripheral components, V-4Cr-4Ti and 316 sta…
View article: Biomimetic Artificial Joints Based on Multi-Material Pneumatic Actuators Developed for Soft Robotic Finger Application
Biomimetic Artificial Joints Based on Multi-Material Pneumatic Actuators Developed for Soft Robotic Finger Application Open
To precisely achieve a series of daily finger bending motions, a soft robotic finger corresponding to the anatomical range of each joint was designed in this study with multi-material pneumatic actuators. The actuator as a biomimetic artif…
View article: A preliminary study on the feasible design of bionic blanket concept
A preliminary study on the feasible design of bionic blanket concept Open
A bionic concept originating from the mechanism of gastric mucosa protecting a gastric wall from corrosion by gastric acid is creatively proposed, with the intention of finding a new way to reduce the corrosion of insulation coatings in li…
View article: Cutting edge preparation using the discrete element software EDEM
Cutting edge preparation using the discrete element software EDEM Open