Research works

Aerodynamic Optimization of a Two-stage Centrifugal Compressor for a 1MW-class High-temperature Steam-generating Heat Pump using Reactive Response Surface Machine Learning

This study presents the optimal design of a 1MW-class two-stage centrifugal compressor for high-temperature steam generation heat pump using an AI-assisted design framework based on reactive response surface machine learning (RRSML). The baseline configuration was obtained using...

Evaluation of Mechanical and Burst Performances of Type III Composite Pressure Vessels Manufactured Using Wet and Dry Filament Winding Methods

T800 이상급 고강도 탄소섬유를 사용하여 습식 및 건식 필라멘트 와인딩 공법으로 제작한 type III 복합재 압력용기의 기계적 물성과 파열 성능을 평가하였다. 스트랜드 및 복합재 시편의 기계적 물성시험을 ASTM 규격에 따라 수행하였으며, 6.8 L 및 500 Φ 복합재 압력용기의 수압시험을 통해 파열압...

Women’s access to agricultural inputs under gender-inclusive climate policies in Nigeria

Climate change continues to threaten agricultural productivity, food security, and rural livelihoods in Nigeria, with women farmers facing disproportionate challenges due to unequal access to productive resources and limited inclusion in climate adaptation initiatives. This study...

QTT Dynamic-Circuit Completed-Record and Timing-Access Extension

A Hardware-Ready Route to an Unprogrammed Record-to-Clock Test Dynamic circuits can already write mid-circuit outcomes, condition later operations, and erase coherent markers. This preregistered extension removes the control path that would make the result trivial: a physical rec...

Associations of maternal mood on the outcome of childbirth: a latent profile analysis

It is important to recognize that childbirth and the transition to the maternal role constitute a profound identity reconstruction, involving both the physical experience of labor and the psychological adaptation to motherhood, during which many women experience unstable and inte...

From the SCR Relationship to Search Space Governance: A Foundational Analytical Framework for Delivery Reliability in AI Software Engineering

Generative AI can already produce code and functionality at low cost, yet the reliable delivery of complex software still depends on continuously managing task constraints, component dependencies, change impacts, and validation feedback. This paper examines the complete AI develo...

Enhanced FOC performance using a hysteresis current controller for EV induction motor drives

Electric vehicle traction drives require fast, robust, and efficient induction motor control, especially under variable speed, load torque, and thermal operating conditions. In Field-Oriented Control integrated Hysteresis Current Controller (FOC-HCC) induction motor drives, varia...

Two new functions related to the sum of element orders of a finite group

Let [Formula: see text] be a finite group and [Formula: see text] be a proper normal subgroup of [Formula: see text]. In this note, we introduce two new functions [Formula: see text] and [Formula: see text] involving the sums of element orders of [Formula: see text] and [Formula:...

Feasibility and mid-term outcomes of simultaneous robot-assisted laparoscopic radical prostatectomy and transurethral resection of bladder tumor: a single-center case series

To describe the feasibility and mid-term outcomes of simultaneous robot-assisted laparoscopic radical prostatectomy (RALP) and transurethral resection of bladder tumor (TURB) in patients with localized prostate cancer and concomitant non–muscle-invasive bladder cancer (NMIBC). We...

Comparison of compressive strength of a novel hydroxyapatite tack with titanium and resorbable tacks – an in-vitro study

The development of resorbable fixation devices has gained momentum due to limitations associated with titanium systems, including the need for device removal, soft-tissue complications, and uncertain long-term outcomes. This study introduces a novel hydroxyapatite (HA) tack desig...

Stoichiometry-driven electronic heterogeneity in covalent organic frameworks for coupled H2O2 photoproduction and chemoselective fragrance upgrading

Coupling H2O2 photoproduction with value-added organic transformations avoids the sluggish kinetics of water oxidation, yet integrating both processes within one photocatalyst remains challenging. Here, we report stoichiometry-driven electronic heterogeneity in covalent organic f...

Early oseltamivir initiation and influenza outcomes in kidney transplant recipients: a multicenter real-world study

Influenza infection poses a significant clinical threat to kidney transplant recipients due to their immunocompromised status. Although current guidelines recommend early antiviral therapy, real-world evidence supporting the effectiveness of oseltamivir, particularly regarding th...

Electrochemical click chemistry for controlled and localized biosensor surface functionalization

Biosensor performance depends strongly on the properties of the functionalized electrode interface, making robust and controllable surface modification strategies highly desirable. In this work, we investigate electrochemical click chemistry (E-click) as an electrochemically driv...

Effects of Variable-Speed Operation on the Performance and Loss Characteristics of an Industrial Centrifugal Compressor

In this study, the effects of variable-speed operation on the performance and internal flow of an industrial centrifugal compressor were investigated using computational fluid dynamics. Simulations were conducted at 100%, 90%, and 80% of the design rotational speed under identica...

Mechanical-press torrefaction of Napier grass for bio-coke production: effects of temperature and pressure on densification, fuel properties, and CO2 gasification behavior

This study investigated a mechanical-press torrefaction-assisted carbonization route for producing Napier grass-derived bio-coke. Napier grass was first torrefied under mechanical pressure at 280–340 °C and 20–70 MPa, followed by carbonization at 1000 °C. The effects of torrefact...

A tumor microenvironment acid-responsive therapy combining fenton chemistry and chemotherapy via TNF pathway for synergistic and safe lung cancer treatment

Lung cancer is one of the most common malignant tumors, but traditional treatments, particularly chemotherapy, often face significant challenges, including drug resistance and high systemic toxicity. In this study, we developed a novel acid responsive nanoparticle, La₂O₃@PDA/PTX,...

Risk factors for gestational hypertension and preeclampsia: a multivariate logistic regression analysis in a less-developed province in south-central China, 2012–2022

To explore risk factors for gestational hypertension and preeclampsia. Data were obtained from the Maternal Near-Miss Surveillance System in Hunan Province, China, 2012–2022. Multivariate logistic regression analysis (method: Enter, α = 0.05) and odds ratios (ORs) were used to id...

Analysis and optimization of process parameters affecting core-spun ring yarn properties using a soft computing-based approach

This study presents a soft computing-based framework for the analysis, modeling, and optimization of cotton/polyester core-spun yarn properties produced on a ring spinning system. The effects of pre-tension, core multi-filament linear density, twist level, and spindle speed on ya...

Mental health status and its correlates among emerging adults living in the west bank experiencing prolonged conflict: a study on depression, anxiety, war-related stress, and resilience

Emerging adults living in conflict-affected regions are exposed to chronic stressors that may adversely affect their psychological well-being. In the West Bank, prolonged exposure to war, political violence, military escalation, and radical attacks has created a persistent enviro...

Hypothalamic prolactin receptor+ dopaminergic neurons regulate energy metabolism and nociceptive threshold in mice during lactation

Women during lactation undergo significant bone loss and metabolic changes. However, the underlying mechanisms in the brain remain unclear. Herein, we found that prolactin receptor (PRLR)+ neurons in the hypothalamus control lactation physiology and metabolism in mice. Prolactin...