Research works

Drag and lift characteristics of near-wall multi–particle systems in linear shear flow

This study employs particle–resolved simulations (PRS) based on the immersed boundary method (IBM) to investigate the drag and lift characteristics of multi–particle systems on a solid wall under steady linear shear flow. Two configurations are examined: a single-layer of particl...

Co doping enhances the pseudocapacitive performance of Ni3S4/NiS heterostructures for high-performance asymmetric supercapacitors

The poor conductivity and insufficient number of electroactive sites of nickel sulfide lead to unsatisfactory electrochemical performance. To address this issue, a Co-doped Ni 3 S 4 /NiS heterostructure (NixSy@Co) was prepared by hydrothermal method. Structural and electrochemica...

Laplace Transforms of Solutions for a Radial Advection–Diffusion Equation to Simulate Aquifer Thermal Energy Storage

Abstract The radial advection–diffusion equation with thermal conductivity plays a role at the injection of warm water in aquifers. In this paper we generalize the well-known solutions of solute transport at a fully screened injection well by taking into account molecular diffusi...

Introducing Acid–Base Titration on Paper-Based Analytical Devices in a High-School Chemistry Laboratory for the Determination of Acetylsalicylic Acid

Abstract In this study, paper-based analytical devices (PADs) were used to introduce a simple, rapid, portable, and low-cost acid–base titration method in high school chemistry laboratories. Students performed conventional and paper-based titrations to determine the amount of ace...

Influence of mesoporous Wakkanai siliceous shale and microporous zeolite 13X on the thermal energy storage performance of MgCl2/2CaCl2 composites

Thermochemical energy storage (TCES) using composite salt hydrates is a promising technology for low-grade heat utilization. However, a systematic comparison linking the mass transfer behavior and structural stability of representative mesoporous and microporous matrices to packe...

Mechanisms underlying the anti-spoilage effects of plant extracts on postharvest mung bean sprouts

Plant extracts are commonly incorporated into the processing of agricultural products to exert preservative effects. However, the molecular mechanisms underlying their decay-inhibiting effects remain poorly understood. Identifying plant extracts with potent anti-spoilage activity...

Weak Ferromagnetism in NiS 2 under Nanocrystallization

Structurally well-ordered NiS 2 nanocrystals with an average diameter of 27.0 ± 6.5 nm retain the bulk-like two-step antiferromagnetic transitions, as shown by magnetization and heat-capacity measurements. Below the lower transition, the nanocrystals exhibit a hysteretic ferromag...

Evaluating the Effect of Tree Depth on the Performance of Decision Tree Classifiers

The maximum depth of a decision tree is one of the most influential hyperparameters governing the trade-off between model bias and variance. A tree that is too shallow may fail to capture the underlying structure of the data (underfitting), whereas a tree that is too deep tends t...

Comparison of new and recurring post-acute infection syndrome – results from a German population-based cohort

New respiratory infections after or while experiencing post-acute infectious syndromes (PAIS) can lead to resurgence of symptoms. Data comparing symptoms, related impairment, and duration of first and recurring PAIS episodes are lacking. This cross-sectional study was conducted i...

Catalytic Asymmetric Spiroannulation to Access Polycyclic Spiro Enones via Transient Axial-to-Point Chirality Induction and Transfer

Chiral spirocycles exhibit tremendous potential in drug discovery and asymmetric synthesis, owing to their unique three-dimensional rigid framework and superior stability. However, stereoselective construction of polycyclic spiro compounds through a single catalytic transformatio...

Spark-Engineered Microelectrode Arrays from Disposable Screen-Printed Macroelectrodes

Abstract A computer numerical control (CNC)-guided spark-assisted localized microelectrode patterning is used for the first time for the programmable fabrication of electrodes exhibiting microelectrode behavior with high spatial precision. A graphite wire serves as a spark probe...

Effects of body weight support and walking speed on device-derived hip angles and muscle activity symmetry during overground robotic-assisted walking in older adults

Understanding how body weight support (BWS) and walking speed influence gait in older adults may help guide the selection of assistance settings during robotic-assisted gait rehabilitation. These parameters are routinely adjusted during clinical practice, yet their effects during...

Beyond Brain Drain: Student Mobility, Transnational Education and Human Capital Retention in the Global South

International student mobility can create major benefits for individuals and destination countries, but it can also intensify human-capital pressures in countries of origin. This article examines how transnational education can widen access to international qualifications while r...

Integrated learning materials and video-selfie pedagogy for enhancing gerontological assessment attitudes and skills among nursing students in Tanzania: a longitudinal quasi-experimental study

Global demographic shifts toward an ageing population have established older adult care as an urgent public health priority. Because aging brings complex medical and psychosocial vulnerabilities, nurses should have robust clinical proficiencies. However, persistent geriatric asse...

Estimation of field-scale crop evapotranspiration from the mechanistic SIF-ET model using the UAV hyperspectral imagery

Accurate estimation of evapotranspiration (ET) is critical for agricultural water management and understanding land-atmosphere interactions. Conventional thermal and optical remote sensing is a powerful tool for ET estimation, but existing methods remain constrained by empirical...

PFUSRC‑177: Phase Damping and the Way of Non‑Action — The Human Localization in the Low‑Density Region of the Lower Cone Waist

PFUSRC‑004 has established that cosmic dark matter is the topological residue of the exclusion mechanism, and dark energy is the macroscopic manifestation of π₁ dynamic damping. Both originate from interlayer helical damping. This paper lowers this judgment to the human level, pr...

Operating risk and financing working capital strategies in SMEs

Purpose The objective of this study is to analyse the effects of operating risk on SMEs' working capital requirements (WCR) financing strategies. Since the literature has previously stated that operating and financial risk are compensated and that financial risk is related to deb...

Assessing ecosystem service values responses to livelihood transitions in an Arid Mountain–Oasis–Desert system

Balancing ecological conservation and rural livelihoods represents a critical challenge in arid social-ecological systems. Livelihood transitions among agropastoral households strongly influence the area allocated to different land-use types, thereby shaping regional ecosystem se...

AICOS CORE — Blind-Spot & Decision Assurance Architecture: From Evidence to Machine-Enforced Institutional Trust

AICOS CORE’s canonical framework for identifying, classifying, testing, and governing blind spots across evidence, authority, context, policy, operations, reliance, uncertainty, legitimacy, resilience, validation, and institutional trust—transforming decision assurance from stati...

Note on principles of the three-body problem in gravitation and Lagrangian points

The three-body problem in gravitation is one of the oldest problems in celestial mechanics, having beenstudied since the end of the 18th century. Although there is no general closed-form solution to this problem,its analysis based on simplifications– as done by Lagrange and Euler...