Strain-engineered Microfibers for Wearable Electronics

Adeela Hanif(A. Hanif),U. Jeong(정운룡),J. Park(박준호),D. Kim(김도희),J. Youn(윤재승),D. S. Kim(김동성) Korean Society for Precision Engineering 2024 한국정밀공학회 학술발표대회 논문집 Vol.2024 No.5

A Simple Shared Relay Beamforming Scheme for Multi-Cell Multi-User Networks

Mohammad Abu Hanif(모하마드 아부 Hanif),Moon Ho Lee(이문호) 한국통신학회 2013 한국통신학회 학술대회논문집 Vol.2013 No.6

Precision Integrated System in Unmanned Aerial Spraying System for Targeted Crop Treatment and Standardized Spray Uniformity

( Hanif Adhitya ),( Seung-hwa Yu ),( Xiongzhe Han ) 한국농업기계학회 2023 한국농업기계학회 학술발표논문집 Vol.28 No.2

The consideration of plant treatment technology depends on the prevalence of diseases and the characteristics of the planting field. Environmental conditions also play a crucial role when applying treatments with an Unmanned Aerial Spraying System (UASS) to ensure uniform and targeted pesticide spraying without excessive use. This research involved the collection of environmental data using a ground-base station (wind speed and wind direction) and drone operational sensor, including GPS (flight speed and altitude), a tank capacity monitor (water flow), and input values (flight mode type and interval), all in real-time. The system can also recognize spraying locations; thus, spraying will only occur at points where plant diseases are found. The combination of parameter data from sensors and the location of plant diseases, determined by GPS and processed by machine learning, produces an output coefficient of variation (CV) value. This value serves as the foundation for decisions regarding the operation of the pump connected to the nozzle in the UASS. This study is a step toward reducing pesticide usage while still ensuring uniformity in spraying, as determined by the standard CV.

Stretchable, Transparent, Tough, Ultrathin, and Self-limiting Skin-like Substrate for Stretchable Electronics

Hanif, Adeela,Trung, Tran Quang,Siddiqui, Saqib,Toi, Phan Tan,Lee, Nae-Eung American Chemical Society 2018 ACS APPLIED MATERIALS & INTERFACES Vol.10 No.32

<P>Human skin is highly stretchable at low strain but becomes self-limiting when deformed at large strain due to stiffening caused by alignment of a network of stiff collagen nanofibers inside the tissue beneath the epidermis. To imitate this mechanical behavior and the sensory function of human skin, we fabricated a skin-like substrate with highly stretchable, transparent, tough, ultrathin, mechanosensory, and self-limiting properties by incorporating piezoelectric crystalline poly((vinylidene fluoride)-<I>co</I>-trifluoroethylene) (P(VDF-TrFE)) nanofibers with a high modulus into the low modulus matrix of elastomeric poly(dimethylsiloxane). Randomly distributed P(VDF-TrFE) nanofibers in the elastomer matrix conferred a self-limiting property to the skin-like substrate so that it can easily stretch at low strain but swiftly counteract rupturing in response to stretching. The stretchability, toughness, and Young’s modulus of the ultrathin (∼62 μm) skin-like substrate with high optical transparency could be tuned by controlling the loading of nanofibers. Moreover, the ultrathin skin-like substrate with a stretchable temperature sensor fabricated on it demonstrated the ability to accommodate bodily motion-induced strain in the sensor while maintaining its mechanosensory and thermosensory functionalities.</P> [FIG OMISSION]</BR>

Can BAP1 expression loss in mesothelial cells be an indicator of malignancy?

Hanife Gulnihal Ozdemir,Sermin Coban Kokten,Nagehan Ozdemir Barisik 대한병리학회 2020 Journal of Pathology and Translational Medicine Vol.54 No.6

Background: Malignant mesothelioma is a highly aggressive tumor that can be confused with a benign mesothelial lesion, especially cytomorphologic lesions. BRCA1-associated protein 1 (BAP1) acts as a tumor suppressor. In this study, we aim to investigate the value of BAP1 staining of malignant mesothelioma cases with expression loss and diagnosis in cell block and biopsy tissue. Methods: Between January 2009 and March 2017, 64 mesotheliomas, 117 reactive mesothelial hyperplasias, and 20 fibrinous pleuritis/pericarditis were diagnosed with morphologic and immunohistochemical findings in our pathology clinic and were included in the study. Formalin-fixed, paraffin-embedded tissues were immunohistochemically examined for BAP1. Inflammatory and stromal cells were used as positive internal controls. BAP1 was assessed for nuclear staining in mesothelial cells. Results: Examinations of the relationship between patient diagnosis and BAP1 biopsy status showed that the BAP1 loss rate (76.6%) was significantly higher in malignant mesothelioma cases than in other benign diseases (0%) (p < .001). Sensitivity and specificity were 76.56% and 100%, respectively, for biopsy tissue from malignant mesothelioma. Sensitivity and specificity were both 100% for BAP1 test on cell block tissue. Furthermore, the consistency between BAP1 cell block and biopsy results was excellent (ĸ = 0.90) and the correlation was significant (p < .001). Conclusions: This study shows that BAP1 expression loss in both cytology and biopsy tissue in biopsy-confirmed malignant mesothelioma cases is an essential parameter for malignant mesothelioma diagnosis.

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.

Polypyrrole multilayer-laminated cellulose for large-scale repeatable mercury ion removal

Hanif, Zahid,Lee, Seyeong,Hussain Qasim, Gullam,Ardiningsih, Indah,Kim, Jeong-Ah,Seon, Jaeyoung,Han, Seunghee,Hong, Sukwon,Yoon, Myung-Han The Royal Society of Chemistry 2016 Journal of materials chemistry. A, Materials for e Vol.4 No.32

<P>In this research, we report a polypyrrole (PPy) multilayer-laminated cellulose network aimed at the cost-effective removal of aqueous potentially toxic metal ions with high adsorption efficiency and good adsorbent recyclability. The preparation of conformal adsorbent coatings on a fibrous cellulose network was accomplished by performing multiple cycles of simple dip-coating of a non-toxic oxidant and vapor-phase polymerization of PPy. The resultant PPy multilayer-deposited cellulose exhibited stable adhesion between the vapor-deposited PPy and the underlying cellulose support even in a strongly acidic solution. Using this non-hazardous hybrid adsorbent, mercury ions could be efficiently adsorbed over a large pH range with a maximum specific adsorption capacity of 31.689 mg g<SUP>−1</SUP>, either in the form of a thick suspended adsorbent for large-scale decontamination or a thin dripper-type membrane for portable water purification. Furthermore, the PPy multilayer-laminated cotton fabric enabled the large-scale repetitive removal of mercury ions (100 ppm, 1 liter) with efficiency above 91%. This study suggests that the PPy-cotton hybrid may serve as a large-scale, economical, and recyclable decontamination platform for efficient removal of highly potentially toxic metal ions (<I>e.g.</I>, Hg(ii) and Cr(vi)), which could be beneficial for water purification, particularly in resource-limited locations.</P>

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.

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.

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.