Zhoukou Normal University

Brønsted Acid‐Catalyzed Tandem Aldol Condensation/1,4‐Aza‐Michael Addition: N 2 ‐Selective Alkylation of Tetrazoles

Herein, we disclose a Brønsted acid‐catalyzed tandem aldol condensation/1,4‐aza‐Michael addition strategy to achieve highly N 2 ‐selective alkylation of tetrazoles (N 2 /N 1 > 25:1), and the N 2 ‐selectivity was unambiguously confirmed by single‐crystal X‐ray diffraction. Control...

Infinite Series About Reciprocal Products of Fibonacci and Lucas Numbers

Infinite series about reciprocal products of Fibonacci and Lucas numbers are systematically examined. This is done by incorporating the telescoping method, Cassini-like identities and partial fractions, as well as the induction principle. Numerous closed formulae are presented wi...

Photocatalyst-Free Visible-Light-Mediated Synthesis of β-(Trifluoromethyl)alkenyl Ketoximes Using 2-Bromo-3,3,3-trifluoropropene as a Radical Precursor

Abstract We report a photocatalyst-free, visible-light-mediated difunctionalization of alkenes employing 2-bromo-3,3,3-trifluoropropene (BTP) as a radical precursor. This protocol operates under mild conditions using potassium formate as an electron transfer reagent and tert-buty...

Emergent cavity-QED dynamics along the edge of a photonic lattice

Abstract We investigate qubits coupled to the boundary of a two-dimensional photonic lattice that supports dispersionless edge modes—unlike conventional edge modes that sustain propagating photons. As a case study, we consider a honeycomb lattice ( photonic graphene ) of coupled...

Charge modulation-driven high-performance reversible hydrogen storage of Be4C3 monolayers near room temperature: A first-principles study

The hydrogen storage capabilities of the (modulated) Be 4 C 3 monolayers have been systematically investigated using first-principles calculations. The Be 4 C 3 monolayer exhibits high gravimetric capacities of 14.29 wt%, but the H 2 adsorption energy is too weak, which motivates...

Corncob-Derived Xylo-Oligosaccharides Attenuate Acrylamide-Induced Gut–Liver Toxicity in Mice, Associated with Modulation of Gut Microbiota and SCFA Metabolism

Acrylamide (AA) is a common foodborne toxicant formed during the thermal processing of starch-rich foods and poses significant risks to the gut–liver axis. Although corncob-derived xylo-oligosaccharides (XOS) have emerged as promising prebiotics with multiple bioactivities, their...

Advances in Machine Learning and Deep Learning Algorithm-Assisted Hyperspectral Imaging for Food Quality and Safety Assessment

Food quality and safety have become increasingly critical public health concerns, while traditional detection approaches are constrained by laborious sample preparation, lengthy analysis times, and destructive procedures. Hyperspectral imaging (HSI) has emerged as a rapid, non-de...

The Optimal Therapeutic Window for Nonbioartificial Liver Support in Acute‐On‐Chronic Liver Failure: A Meta‐Analysis and Meta‐Regression Based on Baseline MELD Score

ABSTRACT NBALS efficacy in ACLF remains controversial. We aimed to determine if a “therapeutic window” exists by stratifying clinical outcomes based on baseline Model for End‐Stage Liver Disease (MELD) scores. We searched PubMed, Embase, Cochrane Library, and Web of Science for R...

How interannual hydrological variability governs thermal stratification and selective withdrawal efficacy: Insights from the lower Lancang River cascade reservoirs

Study region The cascade reservoirs in the lower Lancang River, southwestern China. Study focus Natural river ecosystems rely on specific thermal regimes, which are frequently disrupted by deep reservoirs releasing cold hypolimnetic water. This study investigated how interannual...

Learning Multi-aspect Shared Representation for Recommendation

Representation learning-based recommendation models have garnered considerable attention for their ability to extract meaningful patterns from historical user–item interactions. Nevertheless, most existing approaches represent each user or item with a single embedding, which limi...

MedSparseFL: Sparse and Privacy-Preserving Federated Learning for Healthcare Applications

This project provides processed data indexes for reproducing experiments from the MedSparseFL study, a sparse and privacy-preserving federated learning framework for healthcare applications. The datasets include CheXpert and HAM10000. For each dataset, CSV files (chexpert_index.c...

Impact of Scenario-Based Teaching Centered on Gynecological Laparoscopic Surgical Procedures on Clinical Decision-Making Ability and Operative Standardization Among Resident Physicians

AIM: Scenario-based teaching has demonstrated potential in medical education, but its application to comprehensive gynecological laparoscopic training remains limited. This study aimed to evaluate the impact of scenario-based teaching centered on the complete gynecological laparo...

One-Pot Rapid Synthesisof Kinked Gold Nanowires withHigh SERS Activity

Abstract Developing a simple method to prepare a nanostructure with high SERS activity is crucial for achieving efficient and rapid trace detection and even single-molecule detection. However, conventional methods often struggle to reconcile these two requirements simultaneously....

Structural Basis for the Immunological Paradox of a High-Affinity Yet Non-Immunogenic MHC-I Epitope from Cryptosporidium parvum

Cryptosporidium parvum is an important apicomplexan parasite that causes severe diarrheal disease in children and immunocompromised individuals. However, the structural basis for the limited immunogenicity of its T-cell epitopes remains poorly understood. This study integrates st...

Leader perfectionism towards employees: a double-edged sword affecting employee innovation behaviour

Purpose Grounded in the cognitive appraisal theory of stress, this study explored the double-edged effect of leader perfectionism towards employees on employee innovation behaviour. Design/methodology/approach A survey was conducted in different types of enterprises across China,...