http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Thermally Activated Delayed Fluorescent Properties of Ortho-Carbazole-Appended Triazine Compounds
Hanif Mubarok,오지훈,이희채,정재훈,이민형 대한화학회 2019 Bulletin of the Korean Chemical Society Vol.40 No.11
We report the synthesis and thermally activated delayed fluorescent (TADF) properties of ortho-carbazole-appended triazine compounds. Two donor (D)-acceptor (A) compounds, CzMeoTRZ (1) and BuCzMeoTRZ (2), in which the carbazole (Cz and t-BuCz) donor and 4,6-dipheny-1,3,5-triazine (TRZ) acceptor moieties are linked in the ortho position of the 3-methylphenylene ring were prepared and characterized. Both compounds exhibit broad blue emission at 465 and 487?nm, respectively (photoluminescence quantum yield, ΦPL = 27% and 49% in toluene), which is typical of the donor to acceptor ICT transition. The transient PL decay measurements confirm that both compounds have TADF character with the microsecond-range delayed lifetimes (τd = 1.09??s for 1 and 1.51??s for 2). Electrochemical analysis indicates that both compounds undergo carbazole-centered oxidation and triazine-centered reduction. Theoretical studies further show the twisted D-A structure, effective separation of highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO), and small energy splitting between the excited singlet and triplet states for 1 and 2, all of which support the observed TADF.
Digestate residues analysis under elevated heat regime by using DNS method
Hanif, Mohamad Haziq,Kamaruddin, Mohamad Anuar,Norashiddin, Faris Aiman,Zawawi, Mohd Hafiz Techno-Press 2020 Advances in environmental research Vol.9 No.1
The problems with unsorted municipal waste are always associated with disposal issues as it requires a large area for landfilling or high energy used for incineration. In recent years, an autoclaving technique has been considered a promising approach which could minimize the volume of organic waste from being directly disposed or incinerated. In this work, an attempt was done to study the saccharification potential of organic residues under elevated temperature Thermal treatment involving hot water bath was applied to treat the organic residue ranging from 60℃ to 100℃ for 30 and 60 minutes. The result obtained showed an increasing trend for the concentration of glucose and carbohydrate. However, the result for lignocellulose content which contains various component includes extractive, holocellulose, hemicellulose, cellulose and lignin show variation. Based on the thermal treatment carried out, the result indicated that the trend of glucose and carbohydrate content. The highest percentage of glucose that can be obtained 978.602 ㎍/ml which could be obtained at 90℃ at 60 minutes. The carbohydrate also shows an increasing trend with 0.234 mg/ml as the highest peak achieved at 80℃ for 30 minutes treatment. However, it was found that the lignocellulose content varies with temperature and time. The statistical analysis was carried out using two-ways ANOVA shows an interaction effect between the independent variables (temperature and contact time) and the saccharification effects on the food wastes. The result shows a variation in the significant effect of independent variables on the changes in the composition of food waste.
Effect of bridging units on the photophysical properties of 4-NEt2-appended salen−indium complexes
Hanif Mubarok,Min Hyung Lee,Sang Woo Kwak,Ji Hye Lee,Hyonseok Hwang,Kang Mun Lee,Youngjo Kim,Myung Hwan Park 대한화학회 2022 Bulletin of the Korean Chemical Society Vol.43 No.10
A series of 4-NEt2-appended salenindium complexes bridged by different dii-mine units (ethylene [Et,1], phenylene [Ph,2], and benzonitrile [PhCN,3]) withdifferent electronic effects were prepared in high yields by a one-pot syntheticprocedure. Among them, the solid-state structure of1was identified by X-raycrystallography, featuring a square-pyramidal structure around the indium cen-ter. Ultraviolet–visible (UV/Vis) absorption and emission spectra of1–3showedtypicalππ* electronic transitions centered on the salen ligands, which under-went gradual redshifts as the electron-withdrawing ability of the bridging unitsincreased. Such bathochromic shifts resulted from lowering the energy levelsof the lowest unoccupied molecular orbital (LUMO). In addition, the full widthat half maxima for the emissions of1–4gradually decreased with increasingelectron-accepting property of the bridging units. The observed photophysicalproperties were further supported by theoretical calculations.
An effective approach to generate Wikipedia infobox of movie domain using semi-structured data
( Hanif Bhuiyan ),( Kyeong-jin Oh ),( Myung-duk Hong ),( Geun-sik Jo ) 한국인터넷정보학회 2017 인터넷정보학회논문지 Vol.18 No.3
Wikipedia infoboxes have emerged as an important structured information source on the web. To compose infobox for an article, considerable amount of manual effort is required from an author. Due to this manual involvement, infobox suffers from inconsistency, data heterogeneity, incompleteness, schema drift etc. Prior works attempted to solve those problems by generating infobox automatically based on the corresponding article text. However, there are many articles in Wikipedia that do not have enough text content to generate infobox. In this paper, we present an automated approach to generate infobox for movie domain of Wikipedia by extracting information from several sources of the web instead of relying on article text only. The proposed methodology has been developed using semantic relations of article content and available semi-structured information of the web. It processes the article text through some classification processes to identify the template from the large pool of template list. Finally, it extracts the information for the corresponding template attributes from web and thus generates infobox. Through a comprehensive experimental evaluation the proposed scheme was demonstrated as an effective and efficient approach to generate Wikipedia infobox.
( Hanif Adhitya ),( Seung-hwa Yu ),( Xiongzhe Han ) 한국농업기계학회 2023 한국농업기계학회 학술발표논문집 Vol.28 No.1
The main problem with the applying plant treatment using unmanned aerial spraying systems (UASS) is the unpredictability of the environment. In this study, the environmental and operating conditions of the UASS are used as parameters that must be addressed using a control system. By utilizing the SG-10P octocopter sprayer platform, which is attached to an indoor simulator to obtain controlled environmental conditions, simulations are performed to obtain model development datasets. The datasets obtained are the coefficient of variation (CV) values, and model equation development is done by machine learning, with Random Forest Regression as the model with the highest accuracy of 0.9, close to the actual value. Utilizing a baseline CV below 30%, this model can provide commands in the control system to execute nozzle openings to address real-time conditions and minimize pesticide usage.
Hanif Abdul Rahman,Khadizah Abdul-Mumin,Lin Naing 한국간호과학회 2017 Asian Nursing Research Vol.11 No.1
Purpose: Little evidence estimated the exposure of psychosocial work stressors, work-related fatigue, and musculoskeletal disorders for nurses working in South-East Asian region, and research on this subject is almost nonexistent in Brunei. The main aim of our study was to provide a comprehensive exploration and estimate exposure of the study variables amongst emergency (ER) and critical care (CC) nurses in Brunei. The study also aims to compare whether experiences of ER nurses differ from those of CC nurses. Methods: This cross-sectional study was implemented in the ER and CC departments across Brunei public hospitals from February to April 2016 by using Copenhagen Psychosocial Questionnaire II, Occupational Fatigue Exhaustion Recovery scale, and Cornell Musculoskeletal Discomfort Questionnaire. Results: In total, 201 ER and CC nurses (82.0% response rate) participated in the study. Quantitative demands of CC nurses were significantly higher than ER nurses. Even so, ER nurses were 4.0 times more likely [95% confidence interval (2.21, 7.35)] to experience threats of violence, and 2.8 times more likely [95% confidence interval: (1.50, 5.29)] to experience chronic fatigue. The results revealed that nurses experienced high quantitative demands, work pace, stress, and burnout. High prevalence of chronic and persistent fatigue, threats of violence and bullying, and musculoskeletal pain at the neck, shoulder, upper and lower back, and foot region, was also reported. Conclusion: This study has provided good estimates for the exposure rate of psychosocial work stressors, work-related fatigue, and musculoskeletal disorders among nurses in Brunei. It provided important initial insight for nursing management and policymakers to make informed decisions on current and future planning to provide nurses with a conducive work environment.