Research works

Economic effectiveness of training personnel for infectious disease response and improving information systems in Republic of Korea: a cost-benefit analysis

Objectives: This study assessed the economic value of 2 major initiatives within the national infectious disease response system of the Korea Disease Control and Prevention Agency (KDCA): the Training Programs for Public Health Workforce (TPPHW) and the Infectious Disease Informa...

Entry, Descent and Landing Process Technologies of Mars Landers and Research Trends in Deceleration Technology

화성은 태양계 행성 중 높은 생명체 존재 가능성을 가지고 있다. 또한, 지구 외 새로운 거주지로서 화성 탐사에 대한 시도가 지속되고 있다. 최근에는 화성 탐사를 위한 로버뿐 아니라 유인 탐사선을 보내기 위해 탐사선 크기는 커지고 있다. 이에 따라 탐사선의 성공적인 착륙을 위한 감속 시스템이...

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...

Comparison of modified thoracoabdominal nerve block via perichondrial approach with serratus intercostal plane block and rectus sheath block combination in laparoscopic cholecystectomy: a randomized controlled trial

Patients undergoing laparoscopic cholecystectomy (LC) may experience severe postoperative pain. Peripheral nerve blocks, as a component of multimodal analgesia, are now widely employed in postoperative pain management. This study investigated the effects of modified thoracoabdomi...

World’s population susceptible to water risks is concentrated in two of the 58 IPCC reference regions

The use of climate reference regions is a common practice in climate change research and impact assessment studies 1 , 2 , 3 , 4 , having been utilized especially within the context of the Intergovernmental Panel on Climate Change (IPCC)’s Assessment Reports (ARs) over the past 2...

Reconciling strong coordination and anion-reinforced solvation structure enables nonflammable electrolytes for potassium-ion batteries

Nonflammable electrolytes are pivotal for improving the safety of potassium-ion batteries. However, their broad adoption has been hindered by the inadequate electrode compatibility of conventional nonflammable electrolytes, which typically result from strong solvation and excessi...

Perforated acute appendicitis on computed tomography revealing underlying tuberculosis

Tuberculous appendicitis is an extremely rare manifestation of gastrointestinal tuberculosis and is often clinically and radiologically indistinguishable from conventional acute appendicitis. We report the case of a 27-year-old man who presented with fever and pain in the right l...

Considerations for optimal team-based rheumatology care: a qualitative study exploring the experiences of rheumatology health professionals

Interdisciplinary team-based rheumatology care models are a promising solution for improving access to high quality, equitable care for people with rheumatic and musculoskeletal disorders. There is limited understanding on health professionals’ perspectives on their needs to deli...

Development and internal validation of a nomogram for predicting endometrial polyp recurrence after hysteroscopic polypectomy

Endometrial polyps (EP) are common, and hysteroscopic polypectomy is the reference treatment, but recurrence is frequent. This study aimed to identify risk factors for recurrence and to develop and internally validate a nomogram for individual postoperative risk stratification. I...

Therapeutic Effects of Forced Running on Osseointegration in Rats With Diabetes

BACKGROUND: Poor osseointegration in diabetes is a significant challenge faced by dental implants; existing strategies are still limited in their effectiveness to fully promote osseointegration. Physical exercise is an important treatment for diabetes and has shown its effect in...

Prime-Forced Word Dynamics and a Planar Graph Invariant: Least-Factor Vacancies, Self-Sustaining Prime Closure, and a Reciprocal-Logarithmic Graph Law

This preprint studies a deterministic word system on the alphabet {1,2,3} whose local evolution admits an exact arithmetic interpretation. The central result is a least-factor vacancy law: for a left-half cumulative coordinate x at layer N, the coordinate is vacant exactly when x...

Endovenous thermal ablation combined with foam sclerotherapy is a safe and effective method for the treatment of lower extremity varicose veins: a multicenter retrospective analysis

To compare the safety, efficacy, and perioperative outcomes of radiofrequency ablation (RFA) and endovenous microwave ablation (EMA), each combined with foam sclerotherapy, versus traditional high ligation and stripping (HL/S) for symptomatic lower extremity varicose veins. The p...

Effect of mesh-belt motor frequency on heat- transfer boundary conditions and quenching distortion of bearing rings

Quenching distortion of bearing rings seriously affects their dimensional accuracy and service performance in industrial production. To address this issue, this study proposes a distortion control method for bearing rings during quenching in widely used mesh-belt furnaces, focusi...

Design, synthesis, crystal structure, fungicidal activity and in silico study of novel pyrazole carboxamide derivatives containing flexible chain

Pyrazole-containing compounds are significant in agrochemical discovery due to their diverse biological activities. Inspired by commercial succinate dehydrogenase inhibitor (SDHI) fungicides featuring flexible linkers, a series of novel pyrazole-carboxamide derivatives containing...

An integrated circularity and life cycle assessment of power electronic converters: key hotspots and improvement opportunities

The rapid electrification of energy systems relies heavily on power electronic converters (PECs), which enable efficient electricity conversion and control in applications such as industrial drives, renewable energy systems, and electric mobility. However, despite their high oper...

Invariance Without a Beneficiary: What Survives Cognitive Parity, and on What Grounds

Past the parity threshold this corpus has closed route after route, and read quickly the series says that nothing holds. It does not say that. Every closed route was a configuration whose working condition contained a relative capacity term, and the complementary question was nev...

Incidentally detected elevated jugular venous pressure revealing a delayed post-CABG ascending aortic pseudoaneurysm near a saphenous vein graft origin: a case report

Ascending aortic pseudoaneurysm is an uncommon but potentially life-threatening delayed postoperative complication of cardiac surgery, arising at previous aortic manipulation sites. It may remain clinically silent until expansion, compressive effects, contained rupture, or catast...

Comparison of Single-Channel and Double-Channel Flow Characteristics in Downward-Facing Heating Channel of Core Catcher

원전 중대사고 발생 시 유럽 등 일부 국가 원전에서는 원자로에서 방출되는 노심용융물을 코어캐처에 모은 뒤 냉각수를 이용해 순환 유동을 발생시켜 코어캐처 및 노심용융물 전체를 냉각시키는 전략을 채택하고 있다. 본 연구에서는 이때 코어캐처 하부 구조의 변화에 따른 냉각 및 유동 변화를 확인...

A systematic review of deep learning techniques for learners’ engagement prediction in electronic learning systems

Electronic learning enables learners to acquire knowledge outside the confines of a classroom. However, engagement is of significant concern, as the system does not facilitate one-on-one monitoring. To propose innovative systems capable of forecasting learners’ engagement, it is...

Effect of application delays on the dentin bond strength and interfacial morphology of different adhesive systems: an SEM analysis

This study evaluated the effect of application delays on the dentin bond strength of different adhesive systems used in composite restorations. Forty-five extracted human molars were randomly assigned to Clearfil SE Bond, G-Premio Bond, and Single Bond Universal ( n = 15). Each a...