Saitama University

Cyclobutadiene (and Its Higher Homologues) Complexes of the s-, p-, d-, and f-Block Elements

Abstract Square-planar triplet cyclobutadiene is intrinsically unstable, given its four π-electron configuration leading to unavoidable antiaromatic destabilization. One effective way to stabilize cyclobutadiene is through its incorporation into the coordination sphere of an elem...

Photoredox/Cobalt-Catalyzed Cascade Rearrangement-Cyclization of Alkene

A photoredox/cobalt-catalyzed sequential rearrangement-cyclization of unactivated alkenes is reported. 1,1diarylalkenes bearing tethered nucleophiles undergo a selective 1,2-aryl migration, initiated by metal-hydride hydrogen atom transfer and radical-polar crossover, and followe...

Zebrafish hoxba and hoxbb clusters are redundantly required for posterior pharyngeal pouch development

BACKGROUND: Pharyngeal pouch formation is fundamental to vertebrate craniofacial development, but molecular mechanisms underlying posterior pouch formation remain incompletely understood. Retinoic acid (RA) signaling is required for posterior pharyngeal development, and Hox genes...

Severe mental illness in the MENAT region: systematic review and meta-analysis of prevalence and comorbidities

Abstract Background Severe mental illnesses (SMIs), including schizophrenia spectrum disorders, bipolar disorders, and severe major depressive disorder (MDD), contribute substantially to disability and premature mortality worldwide. Evidence from the Middle East, North Africa, an...

Dual-internationalization marketing strategies of emerging market e-tailers - Evidence from the Alibaba Group

Abstract From the perspective of international retail, this exploratory study aims to shed light on the marketing strategies to implement dual-internationalization (DI) of emerging market multinational enterprises (EM-MNEs) in e-commerce. The qualitative primary data was collecte...

REAP1/AtSWAP70 integrates RAB5 and ROP signalling during sexual reproduction

Small GTPases of the Ras superfamily are critical regulators of diverse cellular processes. While crosstalk between their signalling pathways has been documented in animals, similar mechanisms remain unexplored in plants, where small GTPases have undergone unique evolutionary div...

Aerosol pollution and economic growth in Thailand with a machine learning analysis of the environmental Kuznets Curve

Abstract Aerosol pollution is a chronic air pollution problem that occurs every year in Thailand. It is mostly caused by human activities and climate conditions, and has severe negative impacts on both human health and the economy. This study investigates the relationship between...

Seismic Response of Concrete Columns Reinforced with CFRP Bars and Spirals Under Near-Fault Ground Motions

Carbon-fiber-reinforced polymer (CFRP) reinforcement is a potential alternative to steel in corrosive environments. However, CFRP is elastic without ductility, and the seismic performance of CFRP-reinforced concrete (RC) columns is inadequately understood. This study characterize...

Fabrication of Triply Periodic Minimal Surfaces by Wire and Arc-Directed Energy Deposition Based on Thin-Wall Manufacturing Strategy with Overhang in Direction of Surface Extension

Triply periodic minimal surfaces (TPMSs) exhibit excellent mechanical properties. However, their complex geometries impose significant limitations on their fabrication processes. In this study, we fabricate TPMSs using wire and arc-directed energy deposition (DED-Arc) for the fir...

Eliminating Temporal Misalignment in SAR Flood Detection with a ConvLSTM-Siamese Approach Using Sentinel-1 Time Series

Abstract. Flood risk has been increasing worldwide due to climate change and rapid urbanization. Rapid and accurate flood mapping is essential for reducing damage and supporting rescue activities. Synthetic Aperture Radar (SAR) has been widely used for flood monitoring because it...

Rectangular vs Hexagonal Grid Tessellation for Spatial Analysis of Invasive Species: A Case Study of Aromia bungii in Saitama, Japan

Abstract. Aromia bungii has established persistent infestations across Saitama Prefecture, Japan, yet the influence of grid tessellation and spatial weight configuration on the detection of infestation clustering patterns remains poorly understood. This study evaluated whether re...

Decoupling skeleton stability and water dynamics in C–S–H by in situ SAXS and H2O/D2O-atmosphere SANS

Humidity-induced microstructural changes in calcium silicate hydrate (C–S–H) have been widely studied by small-angle X-ray scattering (SAXS) and proton nuclear magnetic resonance (1H NMR) relaxometry; yet neither technique has been able to separate the contributions of the Ca–Si...

Utilization of photovoltaic waste glass as fine aggregate in cement mortar: Effects of glass type, nitric acid treatment, and fly ash on alkali-silica reaction expansion and strength

This study investigates the feasibility of using photovoltaic (PV) waste glass as a sustainable fine aggregate replacement for natural sand in mortar by evaluating its alkali-silica reaction (ASR) reactivity and mechanical performance. Two types of waste glass, cover glass and su...

MDCV : Multimodal Deceptive Clickbait Video Detection Using Transformer‐Based Model in Bangla

The proliferation of internet usage has made people increasingly dependent on it. Some fraudulent content makers make the content in an intriguing way that engenders users' curiosity. However, after clicking, they are deceived, which wastes users' time and degrades the credibilit...

Synthesis ofUnsymmetrically 1,3,5-TrisubstitutedArenes via Site-Selective Sequential Silylation and Borylation

Abstract A catalytic, site-selective silylation and borylation sequence allows the synthesis of unsymmetrically 1,3,5-trisubstituted arenes. A spirobipyridine ligand bearing a “steric roof”, in combination with iridium creates a catalyst that recognizes the shape of a monosubstit...