Results 71 to 80 of about 571,911 (294)

Spiro‐Phenothiazine Hole‐Transporting Materials: Unlocking Stability and Scalability in Perovskite Solar Cells

open access: yesAdvanced Materials, EarlyView.
Fluorene‐functionalized spiro‐phenothiazine (PTZ‐Fl) exhibits strong Li+ affinity and thermal stability, enabling a PCE of 25.75% in small‐area cells and 22.07% in 25 cm2 modules. Under ISOS‐L3 conditions, PTZ‐Flbased devices retain over 80% efficiency after 1000 hours, demonstrating superior stability and scalability compared to spiro‐OMeTAD for next ...
Javier Urieta‐Mora   +17 more
wiley   +1 more source

Soil Sampling Procedure for Management and Analysis of Legacy Sites in the Korean Peninsula [PDF]

open access: yesJournal of Radiation Protection and Research
Background The Korean Peninsula is split between the South Korea and Democratic People’s Republic of Korea (DPRK, North Korea), with North Korea possessing nuclear weapons.
Yongmin Kim   +3 more
doaj   +1 more source

Avoiding the Apocalypse: The Future of the Two Koreas [PDF]

open access: yes
On the Korean peninsula one of the greatest success stories of the postwar era confronts a famine-ridden--and possibly nuclear-armed--totalitarian state.
Marcus Noland
core   +1 more source

KEBIJAKAN KIM JONG IL TERHADAP PENGEMBANGAN NUKLIR DI KOREA UTARA TAHUN 1998-2008 [PDF]

open access: yes, 2014
North Korea is a country located in the northern part of the Korean peninsula at latitude 37° 43° N and longitude 124° 131° E. In North Korea, all residents must follow the draft.
Ferawati, Anita
core  

Label‐Free SERS Fingerprinting of Neuroprotein Conformational Dynamics in Human Saliva

open access: yesAdvanced Materials, EarlyView.
Galvanic molecular entrapment (GME) is a label‐free method for detecting and quantifying neuroprotein conformational states. This technique enables direct surface binding and in situ hotspot generation around molecules, effectively overcoming challenges related to target localization and mismatched hotspot geometries.
Muhammad Shalahuddin Al Ja'farawy   +10 more
wiley   +1 more source

Estimating Rainfall Erosivity in North Korea Using Automated Machine Learning: Insights into Regional Soil Erosion Risks

open access: yesLand
Soil erosion due to rainfall is a critical environmental issue in North Korea, exacerbated by deforestation and climate change. This study aims to estimate rainfall erosivity (RE) in North Korea using automated machine learning (AutoML), with a ...
Jeongho Han, Seoro Lee
doaj   +1 more source

Porosity Engineering of MXene Architectures: Toward High‐Performance Aqueous Electrochemical Energy Storage

open access: yesAdvanced Materials, EarlyView.
This review systematically summarizes recent advances in porosity engineering of MXenes, with a focused discussion on their structure‐governed energy storage properties. A critical analysis of structure–property relationships is presented across alkali‐ion batteries, multivalent‐ion batteries, and supercapacitors.
Shude Liu   +8 more
wiley   +1 more source

The Invention of Anti-American Sentiment -Why North Korea Shifted the Blame for the Sinchon Massacre to the United States- [PDF]

open access: yesInternational Journal of Korean History
From October to December 1950, a large-scale massacre took place in Sinchon, Hwanghae Province. North Korea dubbed this incident “Sinchon Massacre” and claims that 35,383 people were slaughtered by the US military.
Daeyeol Yea
doaj   +1 more source

The (Non) Impact of UN Sanctions on North Korea [PDF]

open access: yes
This study finds that North Korea's nuclear test and the imposition of UN Security Council sanctions have had no perceptible effect on North Korea's trade with its two largest partners, China and South Korea.
Marcus Noland
core  

Flexible Dielectric Acoustic Resonator Patch for Tissue Regeneration

open access: yesAdvanced Materials, EarlyView.
A flexible dielectric acoustic resonator patch enables MHz‐range ultrasound generation through resonance amplification without using piezoelectric materials. Conformal integration on a curved substrate allows efficient acoustic delivery to tissue‐mimicking environments.
Donyoung Kang   +7 more
wiley   +1 more source

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