Peking University

Experimental study on inhibition mechanism of composite inhibitors for coal spontaneous combustion at critical temperature

To elucidate the inhibition mechanism of composite inhibitors during coal spontaneous combustion under a selected critical-temperature condition, three coals with different ranks were investigated. Temperature-programmed oxidation coupled with gas chromatography, in-situ Fourier...

User engagement behaviours with identity-disclosed social bots on social media: the role of perceived human–machine differences

Purpose This study examines how users interpret identity-disclosed social bots on social media, how perceived human–machine differences shape psychological response orientations and how these orientations are enacted through visible engagement behaviours. Design/methodology/appro...

Spin-Consistency Constraints in Noncollinear Tensor TDA

Abstract TDDFT for open-shell systems, whether spin-conserving or spin-flip, has long suffered from spin contamination. This problem arises because the single-excitation space built upon a single Kohn–Sham determinant is not spin-complete. Adopting spin tensor reference states th...

Moisture-Triggered Solid-Phase Molecular Self-Assembly with Facial Amphiphiles for Efficient and Full-Color Organic Room-Temperature Phosphorescence

Abstract Although room-temperature phosphorescent (RTP) materials have been extensively investigated, the facile generation of efficient RTP at ambient conditions remains a long-standing challenge. Here, we demonstrate a moisture-triggered solid-phase molecular self-assembly (SPM...

Control of ice thickness in cryo-EM via confinement

Achieving thin ice with optimal thickness is a prerequisite for successful cryo-EM analysis of embedded macromolecules. Despite decades of effort, precise control of ice thickness in cryo-EM remains a major challenge. Here we reveal that the intrinsic instability of sub-100-nm li...

Benign nature of incidental orbital uptake on bone scintigraphy: insights from multi-modality imaging and follow-up

To characterize incidental orbital radionuclide uptake on bone scintigraphy using multi-modal imaging and follow-up. This retrospective study included 66 patients with focal orbital uptake on whole-body bone scintigraphy (2019–2022). Subsets underwent follow-up bone scintigraphy...

Risk factors for postoperative recurrence of abdominal wall endometriosis: a meta-analysis and a 24-year clinical cohort study

Abdominal wall endometriosis (AWE) is a common iatrogenic condition following cesarean delivery, yet robust evidence on factors associated with its recurrence remains limited. This study utilizes an integrated evidence synthesis design, combining a primary single-center instituti...

Assessing coastal flooding risk in newly reclaimed areas under the influence of relative sea level rise and multiple drivers

Sea level rise, combined with extreme coastal flooding, poses a significant threat to the socio-economic development of coastal areas. Meanwhile, some coastal cities are increasingly reclaiming land seaward to address urban land pressure. However, existing studies have rarely ass...

Exploring the Potential of Diffusion Large Language Models in Code Generation

Large Language Models (LLMs) have revolutionized the landscape of code generation. Existing LLMs mainly employ autoregressive generation, i.e., generating code token-by-token from left to right. However, the underlying autoregressive generation has two limitations in code generat...

Testing the strong equivalence principle with multimessenger binary neutron star mergers

Abstract The constancy of the gravitational constant G is a cornerstone of the strong equivalence principle and of general relativity, yet its possible temporal variation remains a key target in tests of fundamental physics. Gravitational-wave (GW) astronomy, especially when comb...

Drop‐on‐Demand Printed Negative Dielectric Anisotropy Liquid Crystal Droplets for Adaptive Complex Beam Manipulation and Assessment

ABSTRACT Adaptive manipulation of vectorial optical fields is important for optical metrology, imaging, and structured light‐related applications, yet existing approaches often rely on bulky or sequentially operated systems. Here we demonstrate an inkjet‐printed negative dielectr...

Connected Social Media

Abstract We examine whether and how firms use connected social media outlets to counteract negative coverage in traditional media. Employing a sample of Chinese listed firms with ties to social media outlets, we find that connected outlets portray firms more favorably than unconn...

RCC1 neuropathy mimics childhood axonal Guillain–Barré syndrome with variable clinical severity and survival

Abstract Aim To assess the phenotype and genotype of 10 new patients with biallelic RCC1 variants who presented with axonal neuropathy, and assess functional consequences in vitro. Method In this retrospective, multicentre, observational study, we identified 10 individuals from s...

Building Footprint Has a Stronger Land Surface Temperature Signal than Building Height across Global Cities

Abstract Urban heat is a growing environmental challenge as cities expand and densify. The thermal meaning of added built volume depends on whether volume is produced through larger building footprint, greater building height, or both. Using 2020 hottest-month land surface temper...

In Vitro Activity of Imipenem/Relebactam and Ceftolozane/Tazobactam Against Multidrug-Resistant Klebsiella pneumoniae: A Retrospective Single-Center Study in China

Background: Multidrug-resistant Klebsiella pneumoniae (MDR-KP) is a global health threat with limited treatment options. Comparative in vitro data for imipenem-relebactam (I/R) and ceftolozane-tazobactam (C/T) across diverse MDR-KP clinical populations remain limited. Methods: Su...

Nodal-Length Bounds for Surface Metrics with Isolated Non-Analytic Points

We prove a C_g sqrt(lambda) upper bound for nodal lengths on closed surfaces whose metrics are analytic away from finitely many isolated points and satisfy a summable quantitative analytic-scale condition near those points. The result includes an explicit smooth non-analytic toru...

Intrinsic Spin Control via Thickness-Vacancy Synergy in 2D Semiconductor for Efficient and Sustainable Photocatalytic Pollutant Removal

Abstract Intrinsic spin control in two-dimensional (2D) photocatalysts offers a sustainable route for environmental remediation but remains largely unexplored. Herein, a thickness−vacancy synergy strategy was developed to regulate spin density and polarization in g-C3N4 through c...

Constructing Algorithmic Authority: How Multi-Channel Networks (MCNs) Govern Live-Streaming Labor in China

This study examines the discursive construction of algorithms and its role in labor management in Chinese live-streaming industry by focusing on how intermediary organizations (Multi-Channel Networks, MCNs) actively construct, stabilize, and deploy particular interpretations of p...

Calcium dysregulation in synergy with sonodynamic therapy via medroxyprogesterone-targeted and ROS-responsive nanoparticles for endometrial cancer

Effective therapies that enable precise drug delivery and integrated monitoring are urgently needed for fertility-sparing management of endometrial cancer (EC). Although calcium channel blockers (CCBs) exhibit anti-proliferative potential in EC, their poor tumor selectivity and s...

Nodal-Length Bounds for Surface Metrics with Isolated Non-Analytic Points

We prove a C_g sqrt(lambda) upper bound for nodal lengths on closed surfaces whose metrics are analytic away from finitely many isolated points and satisfy a summable quantitative analytic-scale condition near those points. The result includes an explicit smooth non-analytic toru...