Results 51 to 60 of about 643,510 (292)

Smartphone-Enabled Colorimetry

Sensors, 2023
A smartphone is used as a colorimeter. The performance characterization for colorimetry is presented using both the built-in camera and a clip-on dispersive grating. Certified colorimetric samples provided by Labsphere® are considered as test samples. Color measurements directly performed utilizing the smartphone camera only are obtained using the RGB ...
Ciaccheri L., Adinolfi B., Mencaglia A. A., Mignani A. G.   +3 more
openaire   +3 more sources

The Effect of Purcell Cavities on the Lifetime of Thermally Activated Delayed Fluorescent Emitters

Advanced Functional Materials, EarlyView.
A pressing challenge to OLED displays and lighting is to balance high efficiency and long operational lifetime in the deep blue spectrum. The Purcell effect can reduce the triplet density and hence the probability for destructive energy‐driven triplet annihilation events that limit the OLED lifetime. Here we study of the Purcell effect on two different
Sritoma Paul, Haonan Zhao, Collin N. Muniz, Mark E. Thompson, Stephen R. Forrest   +4 more
wiley   +1 more source

The relationship between physical activity and smartphone addiction in Chinese college students—a latent profile analysis [PDF]

PeerJ
Background This study aimed to examine the relationship between physical activity (PA) and smartphone addiction among Chinese college students, with the goal of understanding whether higher levels of PA can mitigate the risk of smartphone addiction ...
Bao Le Tao, Hao Chen, Yueyan Jiang, Hanwen Chen, Tianci Lu, Jun Yan   +5 more
doaj   +2 more sources

Anomalous Pressure‐Temperature Ultrahigh Sensitivities in Atomically Engineered Carbonitride MXenes for Multifunctional Wearable Human–Machine Interfaces: Joint Computational–Experimental Elucidations

Advanced Functional Materials, EarlyView.
Atomically engineered layered 2D Ti3CNTz carbonitride MXene exhibits ultrahigh heat and pressure sensitivity, enabling dual‐mode sensors with 300%–400% performance enhancement and durability for real‐time health‐monitoring interface devices. Precise nitrogen incorporation (e.g., Ti3C1.8N0.2Tz) boosts conductivity, enhancing temperature response, while ...
Debananda Mohapatra, Ju‐Hyoung Han, Hyun Jin Kang, Jeong Eun Byun, Seonghun Lee, Sanghyuk Lee, Yeseul Son, Jaeeun Park, Tae Joo Shin, Youngho Kang, Jung Woo Lee, Soon‐Yong Kwon, Soo‐Hyun Kim   +12 more
wiley   +1 more source

LOCAL GOVERNMENT BORROWING IN THE FINANCIAL MARKET - THE BENEFITS OF ISSUING MUNICIPAL BONDS

Pravo, 2016
The way of local governments financing is regulated by positive legal regulations of Republic of Serbia. One of the ways of financing particular interests of cities and municipalities is borrowing in the financial market.
Gordana Bejatović, Goran Selak
doaj  

Objectively Measured Smartphone Use and Nonsuicidal Self-Injury Among College Students: Cross-Sectional Study

JMIR Mental Health
BackgroundThe impact of smartphone use on mental health is being rigorously debated. Some questionnaire-based research suggests that smartphone use correlates with nonsuicidal self-injury (NSSI).
Wenhua Wang, Mingyang Wu, Xiaoxiao Yuan, Xue Wang, Le Ma, Lu Li, Lei Zhang   +6 more
doaj   +1 more source

Smartphone use and smartphone addiction in middle school students in Korea: Prevalence, social networking service, and game use

Health Psychology Open, 2018
This study aimed to examine smartphone use patterns, smartphone addiction characteristics, and the predictive factors of the smartphone addiction in middle school students in South Korea. According to the Smartphone Addiction Proneness Scale scores, 563 (
Seong-Soo Cha, Bo-Kyung Seo
doaj   +1 more source

A conditional process model to explain problematic smartphone use: The interaction among frustration intolerance, duration of use, and gender [PDF]

Psihologija
The aim of this study was to investigate the interaction among problematic smartphone use, frustration intolerance, duration of smartphone use, and gender in high school students.
Urfa Osman
doaj   +1 more source

Smartphone ophthalmoscopy: patient and student practitioner perceptions [PDF]

, 2019
It can take several years to become proficient at direct ophthalmoscopy; the instrument’s single eyepiece allows only one individual to view the image at a time, which is considered disadvantageous during teaching.
Huntjens, B., Nagra, M.
core   +2 more sources

Speckle‐Engineered Upconversion Amplification in Nanoemulsion‐Templated Hydrogel Microdomes

Advanced Functional Materials, EarlyView.
Nanoemulsion‐confined PEGDA microdomes generate speckle‐like excitation fields that strongly amplify upconversion luminescence upon dehydration, enabling filter‐free visible readout with reversible on–off switching. DMD‐based lithography yields scalable, shape‐programmable arrays for moisture‐responsive displays and optical encryption.
Chaeyeong Ryu, Byungcheon Yoo, Seunghun Lee, Hyungyo Jeong, Sanggyun Jeong, Heesu Cho, Jongwon Oh, Dahye Baek, Jongkyu Kim, Yubin Lee, Eunsu Gu, Dong‐Hwan Kim, Jung‐Hoon Park, Jiseok Lee   +13 more
wiley   +1 more source