Seoul National University

Oxaziridines: Versatile Reagents in Modern Organic Synthesis

Oxaziridines are three‐membered heterocyclic compounds containing a carbon, an oxygen, and a nitrogen atom. Along with high regio‐, chemo‐, enantio‐, and diastereoselectivity, oxaziridines have gained more interest in modern organic synthesis due to their unique structural and el...

Calderón–Zygmund estimates for generalized double phase equations with matrix weights

Abstract We prove Calderón–Zygmund estimates for generalized double phase equations with Orlicz growth and variable matrix weights. The operator combines a nonuniformly elliptic double phase structure with a degenerate or singular matrix weight satisfying a small log‐ condition....

Memristive Motion‐Streak Neuron for Spatiotemporal Multiple Object Detection

ABSTRACT Conventional artificial vision systems process dynamic scenes inefficiently by reconstructing motion from discrete frames, which requires post‐processing. In contrast, real‐world environments containing multiple moving objects demand sensor‐level discrimination. This wor...

Determining the optimal design characteristics of trapezoidal piano key weirs for improved water discharge

Abstract This study attempts to evaluate the influence of design factors and flow characteristics on the discharge capacity of trapezoidal piano key weirs. To evaluate the influence of the main design factors on discharge rates, 9 models were simulated, with width ratios of 1.25,...

Parcel-level crop classification in small and irregular fields using structured Sentinel-2 data and clustering based analysis

Abstract Satellite image time-series (SITS) is one of the most useful tools for crop type classification. However, the low resolution of satellite image is a challenge for small, irregular shaped parcels such as farms in South Korea. In this study, we conducted a comprehensive ev...

Comparison of diestrus duration and temporal gene expression patterns in vaginal smear samples from pseudopregnant rats induced by sonic vibration or mating with vasectomized males

BACKGROUND: Induction of pseudopregnancy is a prerequisite for successful embryo transfer in rats. Conventionally, pseudopregnancy is induced by mating females with vasectomized males. Although effective, this method requires surgical preparation and maintenance of sterile males...

Nitric oxide generation from nitrate at the cobalt center

Abstract Herein, we report the synthesis and reactivity of the cobalt(II) nitrate complex, ( acri PNP)Co(NO 3 ) ( 2 ). Exposure of 2 to both CO(g) or PPh 3 drives a deoxygenation pathway to afford the mononitrosyl nitrite cobalt species ( 4 ). To elucidate the electronic features...

Performance metrics in systematic reviews and meta-analyses of artificial intelligence-based prediction models for children and pregnant women: protocol for an umbrella review

Artificial intelligence (AI) has shown significant promise in medical diagnostics. However, children and pregnant women represent “vulnerable populations” often underrepresented in large-scale training datasets. This paper summarizes a protocol for an umbrella review aiming to id...

Iron-responsive transcription factor SreA regulates calcium homeostasis independently of calcineurin–Crz1 pathway in Fusarium graminearum

ABSTRACT Calcium is an abundant intracellular ion that is intricately involved in various cellular processes. The precise regulation of calcium homeostasis is critical for fungal physiology. In fungi, calcium signaling is primarily mediated by the calmodulin–calcineurin pathway,...

Quantitative Dynamicsand Modulation of Reactive OxygenSpecies in Aqueous Microdroplets

Abstract Reactive oxygen species (ROS) such as hydroxyl radical (·OH), superoxide radical (O2·–), and hydrogen peroxide (H2O2) differ strongly in reactivity and function. This diversity makes it challenging to regulate ROS-driven chemistry while minimizing undesired side reaction...

Forecast-based attribution of the role of stratospheric variability in weather extremes

Abstract. Variability of the stratospheric polar vortex, particularly its dramatic breakdown during sudden stratospheric warming (SSW) events, has been linked to a number of surface weather extremes. However, attributing the role of stratospheric variability in a specific observe...

Rare variant effect estimation and polygenic risk prediction

Abstract Due to their low frequency, estimating the effect of rare variants is challenging. Here, we propose RareEffect, a method that first estimates gene- or region-based heritability and then each variant effect size using an empirical Bayes approach. Our method uses a varianc...

Low‐Voltage Operation of IGZO Memtransistors Enabled by Coupling Enhancement Through 2T Drain‐Driven Operation for Neuromorphic Computing

Neuromorphic computing has emerged as a promising approach to overcome the limitations of the von Neumann architecture by enabling energy‐efficient data processing. Here, we demonstrate a two‐terminal (2T) flash‐type indium–gallium–zinc oxide memtransistor for voltage‐scalable an...

A Diagnosis Buried in the Closet: How Autistic People Learn of Their Autism Diagnoses

Background: Learning that one is autistic can be a pivotal turning point in self-understanding, but autistic people learn of this information under highly variable conditions. How these disclosure conditions shape autistic people’s experiences of learning and making sense of the...

Perioperative outcomes of robot-assisted, laparoscopic or thoracoscopic, and open surgery across 13 cancer operations: a single-institution cohort of 36,208 cases

Abstract To compare perioperative outcomes of robot-assisted surgery, video-assisted (laparoscopic or thoracoscopic) surgery and open surgery across 13 oncologic procedure groups, because aggregate technology-level comparison is confounded by procedure mix and by the calendar tim...

Structure‐Engineered Nanoporous Vanadium Oxide Memristors for Reconfigurable Synapse–Neuron Integration and Synergistic Robotic Motion

ABSTRACT Neuromorphic sensory‐to‐motor interfaces require compact devices that can combine nonvolatile synaptic weight storage with volatile neuronal firing, yet these functions typically rely on distinct material and circuit mechanisms. Here, we report a structure‐engineered VO...

Comparing Hair Cortisol, DHEA, and Cortisol-to-DHEA Ratios from Various Body Sites in Anatolian Shelter Dogs

Hair-based biomarkers offer a non-invasive window into chronic stress physiology, yet the influence of sampling body site on hair cortisol, dehydroepiandrosterone (DHEA), and their molar ratio has not been systematically characterized in domestic dogs. This study compared these t...

Surgical resection and angularis oris axial pattern flap reconstruction with adjuvant radiation therapy for recurrent soft palate leiomyosarcoma in a dog

Leiomyosarcoma of the oral cavity is extremely rare in both human and veterinary medicine. To the best of our knowledge, this is the first report describing the clinical course and multimodal treatment of a canine leiomyosarcoma arising in the soft palate. A 3-year-old, spayed fe...

Gas-driven needle-free dental injection enables tunable and predictable soft-tissue penetration: high-speed kinematic and micro-computed tomography validation

Needle-free jet injectors are a promising alternative to conventional dental needles, particularly for patients with injection-related fear. However, the actuation mechanism can substantially affect jet formation, delivery consistency, and tissue penetration. This study compared...

Complex regional pain syndrome research trends

Background: Complex regional pain syndrome (CRPS) is a chronic pain disorder characterized by disproportionate regional pain and distinct clinical features such as allodynia and hyperalgesia. We conducted a bibliometric analysis to map the global research landscape of CRPS over t...