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| WoS | SCOPUS | Document Type | Document Title | Abstract | Authors | Affiliation | ResearcherID (WoS) | AuthorsID (SCOPUS) | Author Email(s) | Journal Name | JCR Abbreviation | ISSN | eISSN | Volume | Issue | WoS Edition | WoS Category | JCR Year | IF | JCR (%) | FWCI | FWCI Update Date | WoS Citation | SCOPUS Citation | Keywords (WoS) | KeywordsPlus (WoS) | Keywords (SCOPUS) | KeywordsPlus (SCOPUS) | Language | Publication Stage | Publication Year | Publication Date | DOI | JCR Link | DOI Link | WOS Link | SCOPUS Link |
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| ○ | ○ | Article | Prediction of Rooftop Photovoltaic Solar Potential Using Machine Learning | Solar energy forecasting accuracy is essential for increasing the quantity of renewable energy that can be integrated into the existing electrical grid control systems. The availability of data at unprecedented levels of granularity allows for the development of data-driven algorithms to improve the estimation of solar energy generation and production. In this paper, we develop a prediction of solar potential across large photovoltaic panels from the roof tops using a machine learning method. The Restricted Boltzmann Machine (RBM) is the machine learning method used in the study to predict or forecast the solar potential in rooftops. The machine learning model is supplied with training dataset to get trained with the dataset for conversion into the model and then tested with the test dataset for validating the model. The results of simulation are conducted on R-package over various libraries to predict the rooftop solar potential. The results of simulation shows that the proposed method achieves higher rate of prediction accuracy than the other methods. The results of the simulation show that the proposed method achieves a higher rate of prediction accuracy of 99% than the other methods. | Mukilan, K.; Thaiyalnayaki, K.; Dwivedi, Yagya Dutta; Isaac, J. Samson; Poonia, Amarjeet; Sharma, Arvind; Al-Ammar, Essam A.; Wabaidur, Saikh Mohammad; Subramanian, B. B.; Kassa, Adane | Kalasalingam Acad Res & Educ, Dept Civil Engn, Virudunagar 626126, Tamil Nadu, India; SRM Inst Sci & Technol, Chennai, India; Inst Aeronaut Engn, Dept Aeronaut Engn, Hyderabad 500043, Telangana, India; Karunya Inst Technol & Sci, Dept Biomed Engn, Coimbatore 641114, India; Govt Women Engn Coll, Dept Informat Technol, Ajmer 305002, Rajasthan, India; Govt Women Engn Coll, Dept Elect & Commun Engn, Ajmer 305002, Rajasthan, India; King Saud Univ, Coll Engn, Dept Elect Engn, POB 800, Riyadh 11421, Saudi Arabia; King Saud Univ, Coll Sci, Chem Dept, Riyadh 11451, Saudi Arabia; Kyungpook Natl Univ, Dept Biotechnol, Daegu, South Korea; Arba Minch Univ, Arba Minch Inst Technol AMIT, Fac Mech Engn, Arba Minch, Ethiopia | Dwivedi, Yagya/AAT-5355-2021; Krishnan, Dr.K.Thaiyalnayaki/D-2216-2019; K, Mukilan/ACI-3886-2022; Krishnan, DrKThaiyalnayaki/D-2216-2019; Al-Ammar, Essam/AAA-4768-2020; Isaac, Samson/D-7793-2018; wabaidur, Saikh/Z-1450-2019 | 57205629687; 57730237900; 57197361795; 57983001700; 56958314100; 59644873900; 8893253900; 24336563700; 57221053219; 58346024800 | mukilan_k_project@aol.com;k.thaiyalnayaki.research@outlook.com;yagyaduttadwivedi.2004@yandex.com;samsonisaac.j.work@protonmail.com;amarjeet_poonia_2007@aol.com;arvindsharmaphd@yandex.com;ammar.phd@aol.com;wadaidurpaperscripts@hotmail.com;bbsubramanian@yahoo.com;adane.kassa@amu.edu.et; | INTERNATIONAL JOURNAL OF PHOTOENERGY | INT J PHOTOENERGY | 1110-662X | 1687-529X | 2022 | SCIE | CHEMISTRY, PHYSICAL;ENERGY & FUELS;OPTICS;PHYSICS, ATOMIC, MOLECULAR & CHEMICAL | 2022 | 3.2 | 27.1 | 0.56 | 2025-06-25 | 5 | 8 | Electric power system control; Electric power transmission networks; Forecasting; Machine learning; Solar power generation; Statistical tests; Electrical grids; Energy forecasting; Forecasting accuracy; High rate; Machine learning methods; Machine-learning; Photovoltaics; Prediction accuracy; Renewable energies; Solar potential; Solar energy | English | 2022 | 2022-05-25 | 10.1155/2022/1541938 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||||
| ○ | ○ | Article | Simulation Model of PV System Function in Stand-Alone Mode for Grid Blackout Area | PV systems are frequently used in a stand-alone configuration. In a solar PV-based energy-producing system, power fluctuation is a natural occurrence. Alternative sources of energy, including such hybrid grid-tied or energy storage systems, could be discovered when solar PV systems run off-grid to satisfy regional power demands for reliable power supply. This research uses an unusual PV system that can function in both grid-connected and stand-alone states to propose an efficient approach for the power generation challenge in the residential segment. A block of storage battery with sufficient dimensions is included in the system to make sure the constant power supply of such a residential building with an average electricity demand of 10 kWh. An atypical 3.2 kWp PV system and a 19.2 kWh storage battery brick was determined to be capable of meeting the house's whole daily energy requirements, as well as the defined electrical shutdown times, to simulate the system, which took into account the day load profile, network cutoff times, and monthly radiation from the sun. The collected simulation results showed that during 9 months of each year, the generated PV energy surpasses the load needs, resulting in a maximum battery state-of-charge (SOC) in the range of 74-85%. The generated PV energy is an approximately proportional requirement as during 3 months of minimum solar irradiance (Dec-Feb), whereas the sequence's SOC differs between 40 and 49%, demonstrating the validity of the proposed photovoltaic system. In January and July, the PV service's daily energy produced ranges between 2.6 and 5.4 kWh/kWp, corresponding to a conversion efficiency of 90% and 66.25%, correspondingly. | Ganthia, Bibhu Prasad; Dharmaprakash, R.; Choudhary, Tushar; Muni, T. Vijay; Al-Ammar, Essam A.; Seikh, A. H.; Siddique, M. H.; Diriba, Abdi | Indira Gandhi Inst Technol, Dept Elect Engn, Sarang 759146, Orissa, India; Panimalar Inst Technol, Dept Elect & Elect Engn, Chennai 600123, Tamil Nadu, India; PDPM Indian Inst Informat Technol Design & Mfg, Dept Mech Engn, Jabalpur 482005, Madhya Pradesh, India; Koneru Lakshmaiah Educ Fdn, Dept Elect & Elect Engn, Vaddeswaram 522502, Andhra Pradesh, India; King Saud Univ, Coll Engn, Dept Elect Engn, POB 800, Riyadh 11421, Saudi Arabia; King Saud Univ, Coll Engn, Mech Engn Dept, POB 800, Riyadh 11421, Saudi Arabia; Kyungpook Natl Univ, Intelligent Construction Automat Ctr, Daegu, South Korea; Mizan Tepi Univ, Dept Mech Engn, Tepi, Ethiopia | SEIKH, ASIFUL/ABA-2071-2021; Ganthia, Bibhu/X-7799-2019; Al-Ammar, Essam/AAA-4768-2020; Muni, Dr. T/U-3962-2018; Choudhary, Tushar/AFD-3423-2022; R, Dharmaprakash/K-4210-2015; Siddique, Mohammed Hamid/C-4591-2019 | 57190856421; 58565953200; 56747626000; 56565423200; 8893253900; 55946471600; 57188589477; 57722775600 | jb.bibhu.ganthia@gmail.com;rdharmaprakash_eng@yahoo.com;tushar.choudhary46@aol.com;vijaymuni1986@outlook.in;essam@ksu.edu.sa;asif.h.s@protonmail.com;hamid410@knu.ac.kr;abdi@mtu.edu.et; | INTERNATIONAL JOURNAL OF PHOTOENERGY | INT J PHOTOENERGY | 1110-662X | 1687-529X | 2022 | SCIE | CHEMISTRY, PHYSICAL;ENERGY & FUELS;OPTICS;PHYSICS, ATOMIC, MOLECULAR & CHEMICAL | 2022 | 3.2 | 27.1 | 0.49 | 2025-06-25 | 2 | 8 | FUZZY-LOGIC CONTROL; PHOTOVOLTAIC SYSTEM | Battery storage; Electric power supplies to apparatus; Electric power transmission networks; Electric power utilization; Housing; Secondary batteries; Solar power generation; Energy; Power fluctuations; PV energy; PV system; Simulation model; Solar PVs; Stand -alone; Stand-alone modes; Storage battery; System functions; Charging (batteries) | English | 2022 | 2022-05-20 | 10.1155/2022/6202802 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||||
| ○ | ○ | Article | Synthesis of Modified Phase-Changing Material with Latent Heat and Thermal Conductivity to Store Solar Energy Using a Carbon Nanotube | MicroPCMs' excellent thermal capacity and photothermal translation features benefit solar energy storage applications significantly. A successful in situ polymerization procedure was employed to build microencapsulated phase-change materials using n-hexadecanol as the core and melamine-formaldehyde resin as the outer shell, and the thermal characteristics of the microPCMs were evaluated. In terms of micromorphology, the incorporation of hydroxylated carbon nanotubes into microPCMs with a compact shell has little effect on their spherical structure. MicroPCMs' melting heat and latent heat are both 51.5 degrees C with a 0.2 weight percent dose of hydroxylated carbon nanotubes, and n-energy hexadecanol's storage efficiency is determined to be 75.25 percent. Thermal conductivity and photothermal conversion efficiency of microencapsulated phase-change materials engendered with increased hydroxylated carbon nanotube dosage have improved significantly, laying the foundation for improved photothermal storage efficiency. When 0.6 weight % hydroxylated carbon nanotubes are added to the mixture, microencapsulated phase-change materials have a thermal conduction of 0.3597 Wm(-1)center dot K-1 and 181.5 J center dot g(-1). Additionally, all of the improved microPCMs show exceptional thermal stability across 500 heat cycles. Because of their large thermal capability and efficient photothermal conversion, the new microPCMs appear to be an appealing option for solar energy storage in direct-absorption solar collector systems. | Vedanarayanan, V.; Srinivasan, J. Dilli; Arulvendhan, K.; Kumaran, P. Thirusenthil; Selvakumar, R.; Asif, H. S.; Siddique, M. H.; Chimdi, Jifara | Sathyabama Inst Sci & Technol, Dept Elect & Commun Engn, Chennai 600119, Tamil Nadu, India; SRM Inst Sci & Technol, Dept Elect & Elect Engn, Chennai 600089, Tamil Nadu, India; Rajalakshmi Engn Coll, Dept Elect & Elect Engn, Chennai 602105, Tamil Nadu, India; KL Univ, Koneru Lakshmaiah Educ Fdn, Dept Elect & Commun Engn, Guntur 522502, Andhra Pradesh, India; King Saud Univ, Coll Engn, Mech Engn Dept, POB 800, Riyadh 11421, Saudi Arabia; Kyungpook Natl Univ, Intelligent Construct Automat Ctr, Daegu, South Korea; Ambo Univ, Dept Construct Technol & Management, Ambo, Ethiopia | v, vedanarayanan/A-5709-2017; , R. SELVAKUMAR/AIA-4660-2022; Bikila, Jifara/AAV-9336-2020; Siddique, Mohammed Hamid/C-4591-2019 | 55811603200; 57189758785; 57202011789; 57195358078; 56417484100; 55946471600; 57188589477; 58184567300 | vedharesearchworks@outlook.com;srinipublications@aol.com;vendhanscripts@protonmail.com;senthilartworks@yandex.com;selvapaperresearch@hotmail.com;asif.h.s@protonmail.com;hamid410@knu.ac.kr;jifara.chimdi@ambou.edu.et; | INTERNATIONAL JOURNAL OF PHOTOENERGY | INT J PHOTOENERGY | 1110-662X | 1687-529X | 2022 | SCIE | CHEMISTRY, PHYSICAL;ENERGY & FUELS;OPTICS;PHYSICS, ATOMIC, MOLECULAR & CHEMICAL | 2022 | 3.2 | 27.1 | 0.35 | 2025-06-25 | 4 | 5 | IN-SITU POLYMERIZATION; PARAFFIN MICROCAPSULES; N-EICOSANE; FABRICATION; SHELL; PERFORMANCE; ENHANCEMENT; GRAPHENE | Heat storage; Hydroxylation; Latent heat; Microencapsulation; Paraffins; Phase change materials; Solar energy; Storage (materials); Thermal conductivity; A-carbon; Energy storage applications; Hexadecanol; In-situ polymerization; Melamine-formaldehyde resin; Micropcms; Phase changing materials; Photo-thermal; Solar energy storages; Storage efficiency; Carbon nanotubes | English | 2022 | 2022-04-11 | 10.1155/2022/3412817 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||||
| ○ | ○ | Article | Thermal Storage for the Analysis of Hybrid Energy Systems Based on Geothermal and Solar Power | Thermal degradation of geothermal energy occurs even during the duration of geothermal energy facilities. The enormity and efficiency of thermal energy available for electric transformation, as well as plant performance and power production, are both affected by the decrease in geofluid heat. Additionally, due to the generally increased turbine exhaust temperatures, the efficiency of geothermal energy based upon air-cooled organic Rankine cycle devices (ORCs) degrades considerably at hot room temperatures. A newly designed Geothermal-Concentrator Solar Power (GEO-CSP) station is simulated in this work, which allows for greater geothermal power use and enhances the effectiveness of the geothermal ORC system over the power plant's lifespan. The geothermal fluid entering the ORC's heating element is heated using the sun's radiation. The CSP facility is fitted with a thermal energy storing unit that stores excess energy from the sun accessible throughout the day and releases it at nighttime whenever the energy system's performance is better. When the storage facility is included in the concentrator CSP technology, the incremental yearly energy generation from solar increases by 19 percent, from 5.3 percent to 6.3 percent, similar to the geothermal-only plant. As a result, adding a TES unit to the hybrid unit could be quite beneficial. | Aravind, K. U.; Mekala, N. Muthu; Muthuraju, N. P.; Soni, N. B.; Al-Ammar, Essam A.; Seikh, A. H.; Siddique, M. H.; Christopher, David | East West Coll Engn, Dept Mech Engn, Bengaluru 560064, Karnataka, India; Coll Engn, Dept Mech Engn, Chennai 600025, Tamil Nadu, India; Vidyavardhaka Coll Engn, Dept Mech Engn, Mysuru 570002, Karnataka, India; Univ Petr & Energy Studies, Dept Elect Engn, Dehra Dun 248007, Uttaranchal, India; King Saud Univ, Coll Engn, Dept Elect Engn, POB 800, Riyadh 11421, Saudi Arabia; King Saud Univ, Coll Engn, Mech Engn Dept, POB 800, Riyadh 11421, Saudi Arabia; Kyungpook Natl Univ, Intelligent Construction Automation Ctr, Daegu, South Korea; Wolaita Sodo Univ, Coll Engn, Dept Mech Engn, Sodo, Ethiopia | ; Al-Ammar, Essam/AAA-4768-2020; Siddique, Mohammed Hamid/C-4591-2019; SEIKH, ASIFUL/ABA-2071-2021; Natarajan, Muthu Mekala/CAG-6038-2022 | 57221961322; 57722453300; 57722775800; 56861789100; 8893253900; 55946471600; 57188589477; 57367521500 | aravind.researches@aol.com;muthumekala.phd@yandex.com;rajumuthu@aol.com;soni.phdpapers@outlook.com;essam@ksu.edu.sa;asif.h.s@protonmail.com;hamid410@knu.ac.kr;david.santosh@wsu.edu.et; | INTERNATIONAL JOURNAL OF PHOTOENERGY | INT J PHOTOENERGY | 1110-662X | 1687-529X | 2022 | SCIE | CHEMISTRY, PHYSICAL;ENERGY & FUELS;OPTICS;PHYSICS, ATOMIC, MOLECULAR & CHEMICAL | 2022 | 3.2 | 27.1 | 0.07 | 2025-06-25 | 2 | 1 | TECHNOLOGIES; PERFORMANCE | Concentrated solar power; Concentration (process); Geothermal energy; Heat storage; Solar energy; Thermal energy; Energy-based; Geothermal power; Hybrid energy system; Organics; Plant performance; Power production; Solar power station; Thermal degradation'; Thermal storage; Turbine exhaust temperatures; Rankine cycle | English | 2022 | 2022-05-18 | 10.1155/2022/1296822 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||||
| ○ | ○ | Editorial Material | Adapting to cutocracy: A survival strategy for prospective health professions educators in the era of the metaverse | Park, Claire Su-Yeon; Park, Nora Jee-Young | Univ Alberta, Fac Nursing, Edmonton, AB, Canada; Ctr Econometr Optimizat Nursing Workforce, Seoul, South Korea; SECURE Team You SweEt Spot ConsUlting REs Team Ne, Seoul, South Korea; Kyungpook Natl Univ, Sch Med, Dept Pathol, Chilgok Hosp, Daegu, South Korea | Park, Claire Su-Yeon/H-9665-2019 | 57193232078; 57226185359 | suyeon4@ualberta.ca;pathpjy@knu.ac.kr; | JOURNAL OF PROFESSIONAL NURSING | J PROF NURS | 8755-7223 | 1532-8481 | 41 | SCIE;SSCI | NURSING | 2022 | 2.5 | 27.2 | 3.39 | 2025-06-25 | 4 | 5 | Virtualreality; Professionaleducation; Distanceeducation; Onlineeducation; Inequalities; Socioeconomicfactors | Distance education; Inequalities; Online education; Professional education; Socioeconomic factors; Virtual reality | Education, Distance; Health Occupations; Prospective Studies; education; medical profession; prospective study | English | 2022 | 2022 (JUL-AUG) | 10.1016/j.profnurs.2022.06.004 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||||
| ○ | ○ | Article | Heat shock proteins in cell signaling and cancer | Heat Shock Proteins (HSPs) and their co-chaperones have well-established roles in regulating proteostasis within the cell, the nature of which continues to emerge with further study. To date, HSPs have been shown to be integral to protein folding and re-folding, protein transport, avoidance of protein aggregation, and modulation of protein degradation. Many cell signaling events are mediated by the chemical modification of proteins posttranslationally that can alter protein conformation and activity, although it is not yet known whether the changes in protein conformation induced by post-translational modifications (PTMs) are also dependent upon HSPs and their co-chaperones for subsequent protein re-folding. We discuss what is known regarding roles for HSPs and other molecular chaperones in cell signaling events with a focus on oncogenic signaling. We also propose a hypothesis by which Hsp70 and Hsp90 may co-operate to facilitate cell signaling events that may link PTMs with the cellular protein folding machinery. | Lang, Benjamin J.; Prince, Thomas L.; Okusha, Yuka; Bunch, Heeyoun; Calderwood, Stuart K. | Harvard Med Sch, Beth Israel Deaconess Med Ctr, Dept Radiat Oncol, Boston, MA 02215 USA; Ranok Therapeut, Waltham, MA 02451 USA; Kyungpook Natl Univ, Dept Appl Biosci, Daegu 41566, South Korea | Lang, Benjamin/AAO-9976-2020; Bunch, Heeyoun/JAX-3215-2023 | 57216849364; 9333328900; 57060511700; 56336812200; 7103094191 | scalderw@bidmc.harvard.edu; | BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH | BBA-MOL CELL RES | 0167-4889 | 1879-2596 | 1869 | 3 | SCIE | BIOCHEMISTRY & MOLECULAR BIOLOGY;CELL BIOLOGY | 2022 | 5.1 | 27.2 | 1.05 | 2025-06-25 | 27 | 30 | Heat; Shock; Proteins; Hsp70; Co-chaperones; Cell signaling; Phosphorylation; Cancer; Post-translational modifications (PTM); Kinases; Oncogenic signal transduction | REGULATED EIF-2-ALPHA KINASE; MOLECULAR CHAPERONES; STEROID-RECEPTORS; POSTTRANSLATIONAL MODIFICATIONS; TRANSCRIPTIONAL ACTIVATION; MEDIATED PHOSPHORYLATION; GROWTH ARREST; IN-VIVO; HSP90; HSP70 | Cancer; Cell signaling; Co-chaperones; Heat; Hsp70; Kinases; Oncogenic signal transduction; Phosphorylation; Post-translational modifications (PTM); Proteins; Shock | Animals; Heat-Shock Proteins; Humans; Molecular Chaperones; Neoplasms; Proteostasis; Signal Transduction; chaperone; chip protein; heat shock protein; heat shock protein 70; heat shock protein 90; protein hip; protein hop; tetratricopeptide repeat protein; unclassified drug; chaperone; heat shock protein; human; intracellular signaling; malignant neoplasm; molecular pathology; nonhuman; protein domain; protein folding; protein function; protein phosphorylation; protein protein interaction; protein structure; Review; ubiquitination; animal; metabolism; neoplasm; pathology; protein homeostasis; signal transduction | English | 2022 | 2022-03 | 10.1016/j.bbamcr.2021.119187 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |
| ○ | Article | Impact of donor hypertension on graft survival and function in living and deceased donor kidney transplantation: a nationwide prospective cohort study | Objectives: Hypertensive living donors are potential candidates to expand the kidney donor pool. However, the impact of donor hypertension on graft survival and function remains to be clarified. Methods: We analyzed 3907 kidney transplant recipients registered in a nationwide prospective cohort from 2014 to 2018. Patients were divided by donor types and the presence of donor hypertension. The primary and secondary outcome was the occurrence of death-censored graft failure and renal allograft function, respectively. Results: The prevalence of hypertension was 9.4% (258/2740) and 19.9% (232/1167) in living and deceased donors, respectively. During a median follow-up of 21.8months, death-censored graft survival rate was significantly worse in recipients of hypertensive living donors than in those of normotensive living donors (P¼0.008). In multivariable analysis, recipients of hypertensive living donors had a significantly increased risk of graft loss (adjusted hazard ratio 2.91; P¼0.009). The risk of allograft loss was not different between recipients of hypertensive living and normotensive deceased donors. Propensity score-matched analyses had consistent worse graft survival rate in recipients of hypertensive living donors compared to those of normotensive living donors (P¼0.027), while it was not different between recipients of hypertensive living and normotensive deceased donors. Hypertension in living donors had a significant negative impact on one-year graft function (adjusted unstandardized b -3.64; P¼0.011). Conclusions: Hypertensive living donor recipients have significantly higher risks of renal allograft loss than normotensive living donor recipients, and showed similar outcomes compared to recipients of normotensive deceased donors. © 2022 Wolters Kluwer Health, Inc. | Lee, Yu Ho; Kim, Jin Sug; Song, Sang Heon; Shin, Ho Sik; Yang, Jaeseok; Ahn, Curie; Jeong, Kyung Hwan; Hwang, Hyeon Seok; Kong, Jin Min; Kwon, Oh Jung; Kim, Deok Gie; Jung, Cheol-Woong; Kim, Yeong Hoon; Kim, Joong Kyung; Kim, Chan-Duck; Min, Ji Won; Park, Sung Kwang; Park, Yeon Ho; Berm, Park Jae; Park, Jung Hwan; Park, Jong-Won; Ban, Tae Hyun; Yang, Chul Woo; Yoon, Hye Eun; Lee, Kang Wook; Lee, Dong Ryeol; Lee, Dong Won; Lee, Sam Yeol; Lee, Sang-Ho; Lee, Su Hyung; Lee, Jung Jun; Lee, Jung Pyo; Lee, Jeong-Hoon; Jeon, Jin Seok; Jun, Heungman; Jeong, Kyung Hwan; Chung, Ku Yong; Cho, Hong Rae; Ki, Ju Man; Chae, Dong-Wan; Choi, Soo Jin Na; Han, Duck Jong; Han, Seungyeup; Huh, Kyu Ha | Division of Nephrology, Department of Internal Medicine, CHA Bundang Medical Center, CHA University, Seongnam, South Korea; Division of Nephrology, Department of Internal Medicine, Kyung Hee University, Seoul, South Korea; Biomedical Research Institute, Department of Internal Medicine, Pusan National University Hospital, Busan, South Korea, Department of Surgery, Ewha Womans University College of Medicine, Seoul, South Korea, Organ Transplantation Center, Department of Internal Medicine, Pusan National University Hospital, South Korea, Department of Surgery, Ewha Womans University Medical Center, South Korea; Department of Internal Medicine, Kosin University College of Medicine, Busan, South Korea, Kosin University College of Medicine, Department of Internal Medicine, Division of Nephrology, South Korea; Department of Internal Medicine, Yonsei University College of Medicine, Seoul, South Korea, Department of Surgery, Seoul National University Hospital, South Korea; Transplantation Center, Seoul National University Hospital, Seoul, South Korea, Department of Nephrology, Seoul National University Hospital, South Korea; Division of Nephrology, Department of Internal Medicine, Kyung Hee University, Seoul, South Korea; Division of Nephrology, Department of Internal Medicine, Kyung Hee University, Seoul, South Korea; Department of Nephrology, BHS Hanseo Hospital, South Korea; Department of Surgery, College of Medicine, Han Yang University, South Korea; Department of Surgery, Yonsei University, Wonju College of Medicine, Wonju Severance Christian Hospital, South Korea; Department of Transplantation and Vascular Surgery, Korea University Anam Hospital, South Korea; Department of Internal Medicine, Inje University Busan Paik Hospital, South Korea; Department of Internal Medicine, Bongseng Memorial Hospital, South Korea; Department of Internal Medicine, School of Medicine, Kyungpook National University Hospital, South Korea; Division of Nephrology, Department of Internal Medicine, Bucheon St. Mary's Hospital, South Korea; Department of Internal Medicine, Chonbuk National University Medical School, South Korea; Department of Surgery, Gil Medical Center, Gachon University College of Medicine, South Korea; Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, South Korea; Konkuk University School of Medicine, Department of Nephrology, South Korea; Department of Nephrology, Yeungnam University Hospital, South Korea; Division of Nephrology, Department of Internal Medicine, Eunpyeong St. Mary's Hospital, South Korea; Division of Nephrology, Department of Internal Medicine, Seoul St. Mary's Hospital, South Korea; Department of Internal Medicine, Incheon St. Mary's Hospital, South Korea; Department of Nephrology, Chungnam National University Hospital, South Korea; Division of Nephrology, Department of Internal Medicine, Maryknoll Medical Center, South Korea; Division of Nephrology, Department of Internal Medicine, Pusan National University School of Medicine, South Korea; Department of Surgery, Kangdong Sacred Heart Hospital, Hallym University College of Medicine, South Korea; Department of Nephrology, Kyung Hee University Hospital at Gangdong, South Korea; Department of Surgery, Ajou University School of Medicine, South Korea; Department of Surgery, CHA Bundang Medical Center, South Korea; Department of Nephrology, SNU Boramae Medical Center, South Korea; Department of Surgery, Myongji Hospital, South Korea; Department of Internal Medicine, Soonchunhyang University, Seoul Hospital, South Korea; Department of Surgery, Inje University, Ilsan Paik Hospital, South Korea; Department of Internal Medicine, Kyung Hee University College of Medicine, South Korea; Department of Surgery, Ewha Womans University Mokdong Hospital, South Korea; Department of Surgery, Ulsan University Hospital, South Korea; Department of Surgery, Gangnam Severance Hospital, Yonsei University College of Medicine, South Korea; Division of Nephrology, Seoul National University, Bundang Hospital, South Korea; Department of Surgery, Chonnam National University, Medical School, South Korea; Department of Surgery, Asan Medical Center, South Korea; Department of Internal Medicine, Keimyung University School of Medicine, South Korea; Department of Transplantation Surgery, Severance Hospital, South Korea | 56344334200; 56313589100; 36162581500; 57216238599; 57212326527; 7201986669; 8443579300; 13805711400; 7202290990; 57252511100; 57198637675; 7402016375; 7410196419; 56508055400; 8558530700; 59735471600; 57203275923; 57189388760; 57218626042; 56682283600; 54955660800; 56119751700; 7407743404; 57737628900; 7501514537; 57218150487; 57199467944; 57197749641; 55890136000; 57307240100; 56875079100; 59528181700; 57218629097; 36120293400; 55508260600; 59153035600; 24773386100; 7403936486; 57220162686; 23471686900; 35784016900; 7403220000; 24281360600; 35183155900 | hwanghsne@gmail.com; | Journal of Hypertension | J HYPERTENS | 0263-6352 | 1473-5598 | 40 | 11 | SCIE | PERIPHERAL VASCULAR DISEASE | 2022 | 4.9 | 27.2 | 0.32 | 2025-06-25 | 3 | donor hypertension; kidney transplantation; renal allograft function; renal allograft survival | Cohort Studies; Graft Survival; Humans; Hypertension; Kidney Transplantation; Living Donors; Prospective Studies; Retrospective Studies; Tissue Donors; Treatment Outcome; antihypertensive agent; basiliximab; mycophenolate mofetil; steroid; tacrolimus; thymocyte antibody; adult; albumin to creatinine ratio; Article; blood group ABO incompatibility; brain death; cardiovascular disease; clinical outcome; cohort analysis; controlled study; death; deceased donor; delayed graft function; diastolic blood pressure; end stage renal disease; estimated glomerular filtration rate; female; follow up; graft failure; graft recipient; graft survival; hazard ratio; human; hypertension; hypertensive patient; immunosuppressive treatment; kidney allograft; kidney donor; kidney function; kidney polycystic disease; kidney transplantation; living donor; major clinical study; male; middle aged; prevalence; propensity score; prospective study; protein creatinine ratio; systolic blood pressure; adverse event; donor; graft survival; hypertension; living donor; retrospective study; treatment outcome | English | Final | 2022 | 10.1097/hjh.0000000000003246 | 바로가기 | 바로가기 | 바로가기 | |||||||
| ○ | ○ | Article | Changes in inhibitory control, craving and affect after yoga vs. aerobic exercise among smokers with nicotine dependence | ObjectivesThis study investigated the acute effects of yoga and aerobic exercise on response inhibition and the underlying neural mechanisms in individuals with nicotine dependence, along with changes in craving and affect. Materials and methodsStudy participants included 30 yoga-naive adult smokers with moderate-to-high nicotine dependence. Based on a within-subjects design, all participants participated in three experimental sessions: baseline, 30-min yoga, and 30-min aerobic exercise; one session was conducted per day. The pre- and post-exercise Questionnaire of Smoking Urges and the Visual Analogue Scale were used to measure cigarette craving, and the Positive and Negative Affect Schedule was used to assess affective change. For cognitive measurement of inhibition, participants performed a Go/Nogo task consisting of Smoking-Go, Smoking-Nogo, Neutral-Go, and Neutral-Nogo stimulus conditions. Neuroelectric data were collected and the event-related potential (ERP) N2 and P3 amplitudes and latencies were analyzed. ResultsBoth yoga and aerobic exercise significantly reduced negative affect, whereas a reduction in craving was only observed after yoga. ERP results indicated that the P3 amplitudes after yoga were lower than those after aerobic exercise, suggesting increased neural efficiency after yoga, with reduced neural activity while maintaining the same level of cognitive performance as aerobic exercise. ConclusionAs yoga and aerobic exercise were equally effective in attenuating negative affect, smokers may expect greater benefits from yoga in craving reduction and inhibitory control with less physical and cognitive effort. We also believe that video-based yoga practice may provide additional benefits to these effects, reaching a large number of smokers in a non-face-to-face manner. | Kim, Hyungsook; Kim, Jingu; Woo, Minjung; Kim, Teri | Hanyang Univ, Sch Intelligence, Dept Cognit Sci, Seoul, South Korea; Hanyang Univ, Grad Sch Publ Policy, Seoul, South Korea; Hanyang Univ, Hanyang Digital Healthcare Ctr, Seoul, South Korea; Kyungpook Natl Univ, Dept Phys Educ, Daegu, South Korea; Univ Ulsan, Sch Exercise & Sports Sci, Ulsan, South Korea | Kim, Hyungsook/ADT-8080-2022 | 56938160200; 18835844000; 25030811800; 57824218600 | dr.terikim@gmail.com; | FRONTIERS IN PSYCHIATRY | FRONT PSYCHIATRY | 1664-0640 | 13 | SCIE;SSCI | PSYCHIATRY | 2022 | 4.7 | 27.4 | 0.93 | 2025-06-25 | 8 | 9 | yoga; craving; affect; inhibition; smoking; Go; Nogo; ERP | SMOKING-CESSATION INTERVENTIONS; WITHDRAWAL SYMPTOMS; RESPONSE-INHIBITION; COGNITIVE CONTROL; ERP COMPONENTS; P3 AMPLITUDE; QUESTIONNAIRE; REVISION; DEFICITS; TASKS | affect; craving; ERP; Go/Nogo; inhibition; smoking; yoga | action potential amplitude; adult; aerobic exercise; affect; Article; clinical article; controlled study; drug craving; event related potential; female; Go No Go task; heart rate; human; inhibitory control; intermethod comparison; latent period; male; Positive and Negative Affect Schedule; questionnaire; Questionnaire of Smoking Urges; reaction time; stimulus response; therapy effect; tobacco dependence; visual analog scale; yoga | English | 2022 | 2022-07-15 | 10.3389/fpsyt.2022.940415 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | Minimal rational curves on the moduli spaces of symplectic and orthogonal bundles | Let C$C$ be an algebraic curve of genus g$g$ and L$L$ a line bundle over C$C$. Let MSC(n,L)$\mathcal {M}SC(n,L)$ and MOC(n,L)$\mathcal {M}OC(n,L)$ be the moduli spaces of L$L$-valued symplectic and orthogonal bundles, respectively, over C$C$ of rank n$n$. We construct rational curves of Hecke type on these moduli spaces which generalize the Hecke curves on the moduli space of vector bundles. As a main result, we show that these curves have the minimal degree among the rational curves passing through a general point of the moduli spaces. As its by-products, we show the non-abelian Torelli theorem and compute the automorphism group of the moduli spaces. | Choe, Insong; Chung, Kiryong; Lee, Sanghyeon | Konkuk Univ, Dept Math, 120 Neungdong Ro, Seoul 05029, South Korea; Kyungpook Natl Univ, Dept Math Educ, Daegu, South Korea; Korea Inst Adv Study KIAS, Dept Math, Seoul, South Korea | 17345328400; 47061194800; 57205509481 | ischoe@konkuk.ac.kr; | JOURNAL OF THE LONDON MATHEMATICAL SOCIETY-SECOND SERIES | J LOND MATH SOC | 0024-6107 | 1469-7750 | 105 | 1 | SCIE | MATHEMATICS | 2022 | 1.2 | 27.4 | 0.49 | 2025-06-25 | 2 | 2 | PRINCIPAL BUNDLES; VECTOR-BUNDLES; HECKE CURVES | English | 2022 | 2022-01 | 10.1112/jlms.12527 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||||
| ○ | ○ | Article | Structures, phase transitions, thermodynamic properties, and structural dynamics of eco-friendly hybrid perovskite NH3(CH2)3NH3CoCl4 and NH3(CH2)5NH3CoCl4 crystals | The present study investigates the structures, phase transition temperatures, thermodynamic properties, and structural dynamics of the organic-inorganic perovskite NH3(CH2)(n)NH3CoCl4 (n = 3 and 5) crystals according to the number of carbon atoms. The structure and lattice constants were confirmed by single-crystal X-ray diffraction (XRD) at 298 K. From differential scanning calorimetry and XRD powder patterns, the phase transition temperature T-C obtained at 483 K for n = 3 was isostructural without changing the crystal structure, whereas the T-C for n = 5 was obtained at 494 K with change in the crystal structure. The thermodynamic properties of the two crystals studied by thermogravimetric analysis exhibited relatively high thermal stability at 600 K. From the spin-lattice relaxation times (T-1 rho) according to the temperature change for n = 3 and 5, it was determined that the energy transfer, demonstrating a small thermal displacement around the H-1 and C-13 atoms of the cation, was minuscule. The effects of T-1 rho for H-1 and C-13 were insignificant, indicating a minor change in the N-H center dot center dot center dot Cl hydrogen bond related to the coordination geometry of the CoCl4 anion. Thus, the obtained results for NH3(CH2)(n)NH3CoCl4 (n = 3 and 5) can be helpful for future research on the application of eco-friendly organic-inorganic hybrid perovskite materials. | Kim, Sun Ha; Lim, Ae Ran | Seoul Western Ctr, Korea Basic Sci Inst, Seoul 03759, South Korea; Kyungpook Natl Univ, Dept Chem, Daegu 41566, South Korea; Jeonju Univ, Grad Sch Carbon Convergence Engn, Jeonju 55069, South Korea; Jeonju Univ, Dept Sci Educ, Jeonju 55069, South Korea | 54386953600; 7202659025 | arlim@jj.ac.kr; | SOLID STATE SCIENCES | SOLID STATE SCI | 1293-2558 | 1873-3085 | 131 | SCIE | CHEMISTRY, INORGANIC & NUCLEAR;CHEMISTRY, PHYSICAL;PHYSICS, CONDENSED MATTER | 2022 | 3.5 | 27.4 | 0.15 | 2025-06-25 | 3 | 2 | Organic-inorganic hybrid; Perovskite; [NH3(CH2)(n)NH3]CoCl4; Nuclear magnetic resonance; Thermodynamic properties | THERMAL-PROPERTIES; MOLECULAR MOTIONS | Nuclear magnetic resonance; Organic–inorganic hybrid; Perovskite; Thermodynamic properties; [NH<sub>3</sub>(CH<sub>2</sub>)<sub>n</sub>NH<sub>3</sub>]CoCl<sub>4</sub> | Atoms; Chlorine compounds; Crystal atomic structure; Differential scanning calorimetry; Energy transfer; Hybrid materials; Hydrogen bonds; Single crystals; Temperature; Thermogravimetric analysis; X ray diffraction; Crystals structures; Eco-friendly; Number of carbon atoms; Organic/inorganic; Organic/Inorganic hybrids; Phase transition temperatures; Structure phase transitions; Thermodynamics property; X- ray diffractions; [NH3(CH2)nNH3]cocl4; Perovskite | English | 2022 | 2022-09 | 10.1016/j.solidstatesciences.2022.106927 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |||
| ○ | ○ | Article | Weakly 1-completeness of holomorphic fiber bundles over compact Kahler manifolds | Diederich and Ohsawa (Publ. Res. Inst. Math. Sci. 21 (1985), no. 4, 819-833) proved that every disc bundle over a compact Kahler manifold is weakly 1-complete. In this paper, under certain conditions, we generalize this result to the case of fiber bundles over compact Kahler manifolds whose fibers are bounded symmetric domains. In particular, if the representation related to the fiber bundle is reductive, then it has a plurisubharmonic exhaustion function. If the bundle is obtained by the diagonal action on the product of bounded symmetric domains, we are able to show that it is hyperconvex. | Seo, Aeryeong | Kyungpook Natl Univ, Dept Math, Daegu 41566, South Korea | Seo, Aeryeong/GON-4707-2022 | 55266222700 | aeryeong.seo@knu.ac.kr; | JOURNAL OF THE LONDON MATHEMATICAL SOCIETY-SECOND SERIES | J LOND MATH SOC | 0024-6107 | 1469-7750 | 106 | 3 | SCIE | MATHEMATICS | 2022 | 1.2 | 27.4 | 0.74 | 2025-06-25 | 1 | 3 | HARMONIC-MAPPINGS; LEVI PROBLEM; RIGIDITY; DOMAINS | English | 2022 | 2022-10 | 10.1112/jlms.12635 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||||
| ○ | ○ | Article | A multicenter study of altered level of consciousness in the emergency room | New-onset altered level of consciousness (ALC) is a challenge in real-world clinical practice. Although its presentation is nonspecific and its etiology is intricate, the term ALC is frequently used in the emergency room (ER). This study aimed to clarify and classify the etiologies and outcomes of the ALC in the ER. We retrospectively investigated ALC patients in the ER of four tertiary referral centers from February 2018 to January 2020. The etiology of ALC was comprehensively analyzed by a consortium of university professors, board-certified clinicians in neurology, emergency medicine, or internal medicine. The time point to determine the etiology of ALC was at the time of discharge from the ER. A total of 315,526 patients who visited ER due to ALC were reviewed and found 7988 eligible patients, of which 4298 (53.8%) were male and 5282 (66.1%) were older than 60. The overall mortality was 13.5%. Except undetermined, the 9 etiologies (n = 7552) were categorized into extra- (n = 4768, 63.1%) or intracranial etiology (n = 2784, 36.9%). The most common etiology of ALC in the ER was metabolic cause (n = 1972, 24.7%), followed by systemic infection (n = 1378, 17.3%). The majority of ALC in the ER was derived from extracranial etiology. ALC in the ER is a neurological manifestation of diverse etiologies; not all can be confirmed in the ER. Not only neurological but also critical systemic illnesses should be considered to assess the protean manifestations of ALC in the ER. | Kim, Keun Tae; Kwon, Doo Hyuk; Jeon, Jae Cheon; Kim, In-Cheol; Park, Jung A.; Seo, Jong-Geun | Keimyung Univ, Dept Neurol, Sch Med, Daegu, South Korea; Yeungnam Univ, Dept Neurol, Coll Med, Daegu, South Korea; Keimyung Univ, Dept Emergency Med, Sch Med, Daegu, South Korea; Keimyung Univ, Dept Internal Med, Sch Med, Daegu, South Korea; Daegu Catholic Univ, Dept Neurol, Sch Med, Daegu, South Korea; Kyungpook Natl Univ, Sch Med, Dept Neurol, Daegu, South Korea | ; Kim, Hyun-Chang/G-6624-2015; Kim, Keun Tae/IQU-1105-2023 | 57204465615; 57216938491; 57215830861; 55477715300; 57225162068; 16040307500 | jonggeun.seo@gmail.com; | INTERNAL AND EMERGENCY MEDICINE | INTERN EMERG MED | 1828-0447 | 1970-9366 | 17 | 8 | SCIE | MEDICINE, GENERAL & INTERNAL | 2022 | 4.6 | 27.5 | 0.34 | 2025-06-25 | 1 | 2 | Consciousness disorders; Neurologic manifestations; Emergency medical services; Emergency room | MENTAL STATUS; IMPAIRED CONSCIOUSNESS; DEFINITIONS; STATEMENT; DIAGNOSIS; STROKE | Consciousness disorders; Emergency medical services; Emergency room; Neurologic manifestations | Consciousness Disorders; Emergency Service, Hospital; Female; Humans; Male; Neurology; Patient Discharge; Retrospective Studies; clinical trial; consciousness disorder; female; hospital discharge; hospital emergency service; human; male; multicenter study; neurology; retrospective study | English | 2022 | 2022-11 | 10.1007/s11739-022-03104-8 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | |
| ○ | ○ | Article | Effect of MnS/ZnS nanocomposite on the structural, linear and nonlinear optical properties of PVA/CMC blended polymer | PVA/CMC blended polymers loaded with (1-x)MnS/xZnS nanocomposites were prepared applying the ther-molysis and casting methods. The different phases developed in the nanofiller (1-x)MnS/xZnS, their percentages, structural, and microstructural parameters were determined utilizing x-ray diffraction data and Rietveld analysis. The integration and homogeneity of the nanocomposites fillers into the blend matrix was examined by x-ray diffraction measurements. The elemental composition and their percentages in different blends were confirmed using energy dispersive X-ray (EDS) analysis. The surface morphology of different blends was examined using scanning electron microscope technique. The influence of nanofiller loading on the characteristics vibration bands of the blended polymer was examined using Fourier transform infrared technique. Utilizing UV-vis diffuse reflectance measurements, the changes in absorbance, reflectance, refractive index, extinction coefficient, dielectric function, optical conductivity, nonlinear optical parameters were determined showing improvements for different applications. Also, the changes in the intensity of fluorescence spectra and emitted colors were explored. The optical band gap of the pristine PVA/CMC blend, 5.49 eV, was reduced to 3.35, 5.03, 3.73, and 5.15 eV upon doping with (1-x)MnS-xZnS, x = 0, 0.25, 0.5 and 0.75, respectively. The refractive indices of all blended polymers exhibited normal dispersions for wavelength range below 350 nm while above this range it revealed anomalous dispersion behavior. | El -naggar, A. M.; Heiba, Zein K.; Mohamed, Mohamed Bakr; Kamal, A. M.; Lakshminarayana, G.; Abd-Elkader, Omar H. | King Saud Univ, Coll Sci, Res Chair Exploitat Renewable Energy Applicat Saud, Phys & Astron Dept, POB 2455, Riyadh 11451, Saudi Arabia; Ain Shams Univ, Fac Sci, Phys Dept, Cairo, Egypt; Kyungpook Natl Univ, Intelligent Construction Automation Ctr, 80 Daehak Ro, Daegu 41566, South Korea | Mohamed, Mohamed/P-2194-2014; Abd Elkader, omar/J-1804-2015; Mohamed, Mohamed Bakr/P-2194-2014; Abd Elkader, Omar/AAQ-2892-2020; El-Naggar, Ahmed/H-9098-2018 | 7201947258; 6602591867; 37018029400; 36719759500; 57194637883; 57192277362 | mbm1977@yahoo.com; | OPTICAL MATERIALS | OPT MATER | 0925-3467 | 1873-1252 | 128 | SCIE | MATERIALS SCIENCE, MULTIDISCIPLINARY;OPTICS | 2022 | 3.9 | 27.5 | 4.31 | 2025-06-25 | 44 | 45 | PVA; CMC; MnS; ZnS nanocomposite; Structure; Optical | X-RAY-DIFFRACTION; CARBOXYMETHYL CELLULOSE; ELECTRICAL-PROPERTIES; POLY(VINYL ALCOHOL); OXIDE NANOPARTICLES; CONDUCTIVITY; NANO | MnS/ZnS nanocomposite; Optical; PVA/CMC; Structure | Crystallite size; Dispersion (waves); Energy gap; Morphology; Nanocomposites; Nonlinear optics; Optical conductivity; Reflection; Refractive index; Scanning electron microscopy; Surface morphology; X ray diffraction; Blended polymers; Casting method; Linear and nonlinear optical properties; Microstructural parameters; MnS/ZnS nanocomposite; Nanofiller; Optical-; PVA/CMC; Structural parameter; Thermolyses; Manganese compounds | English | 2022 | 2022-06 | 10.1016/j.optmat.2022.112379 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Effect of ZnO/(Co or Mn) ratios on the structure and optical spectroscopy parameters of PVA/PVP/PEG blended polymer | In this work, doped polyvinyl alcohol/polyvinyl pyrrolidone/polyethylene glycol (70%PVA/20%PVP/10%PEG) blended polymers with different amount of nano ZnO (Zn0.95X0.05O, X = Co and Mn) were produced using solid reaction and casting procedures. The structure and microstructure of the nanofiller samples and blended polymers were investigated using X-ray diffraction (XRD), Energy-dispersive X-ray analysis; scanning electron microscope and Fourier transform infrared techniques. XRD confirmed the present of the nanofiller over the blend matrix. The effect of kind and ratios of the nanofiller on the degree of crystallinity, transmittance, reflectance, absorbance, extinction coefficient, refractive index, dielectric properties and optical conductivity of the blends was examined using diffused reflectance technique. The optical band gap (E-g) value for PVA/PVP/PEG blend is 3.43 eV and it reduced to 2.57 or 2.71 eV as the blend doped with ZnO/Co or ZnO/Mn, respectively. A 500 nm, the n value for the blend doped with 5 wt % ZnO/Co is 1.67 while the n value for the blend doped with 5 wt % ZnO/Mn is 1.51. All nonlinear optical parameters were enhanced as the blend doped with 5 wt % (ZnO/Co or ZnO/Mn). The rate of reduction of fluorescence intensity and emitted colors from different blends were affected by the kind and amount of the nanofiller. | El-naggar, A. M.; Heiba, Zein K.; Mohamed, Mohamed Bakr; Kamal, A. M.; Abd-Elkader, Omar H.; Lakshminarayana, G. | King Saud Univ, Coll Sci, Phys & Astron Dept, Res Chair Exploitat Renewable Energy Applicat Sau, POB 2455, Riyadh 11451, Saudi Arabia; Ain Shams Univ, Fac Sci, Phys Dept, Cairo, Egypt; King Saud Univ, Coll Sci, Phys & Astron Dept, POB 2455, Riyadh 11451, Saudi Arabia; Kyungpook Natl Univ, Intelligent Construct Automat Ctr, 80 Daehak Ro, Daegu 41566, South Korea | El-Naggar, Ahmed/H-9098-2018; Mohamed, Mohamed/P-2194-2014; Abd Elkader, Omar/AAQ-2892-2020; Abd Elkader, omar/J-1804-2015; Mohamed, Mohamed Bakr/P-2194-2014 | 7201947258; 6602591867; 37018029400; 36719759500; 57192277362; 57194637883 | mbm1977@yahoo.com; | OPTICAL MATERIALS | OPT MATER | 0925-3467 | 1873-1252 | 128 | SCIE | MATERIALS SCIENCE, MULTIDISCIPLINARY;OPTICS | 2022 | 3.9 | 27.5 | 4.69 | 2025-06-25 | 42 | 49 | PVA/PVP/PEG; Nano ZnO; Mn; Co; Structure; Optical | PHYSICAL-PROPERTIES; THIN-FILMS; ZNO; NANO; CRYSTALLIZATION; FE | Co; Mn; Nano ZnO; Optical; PVA/PVP/PEG; Structure | Cobalt; Crystallinity; Dielectric properties; Energy dispersive X ray analysis; Energy gap; Manganese; Nonlinear optics; Optical conductivity; Reflection; Refractive index; Scanning electron microscopy; X ray diffraction; X ray diffraction analysis; Zinc oxide; Blended polymers; Co; Mn; N value; Nano-ZnO; Nanofiller; Optical-; PVA/PVP/PEG; Structure spectroscopy; X- ray diffractions; II-VI semiconductors | English | 2022 | 2022-06 | 10.1016/j.optmat.2022.112411 | 바로가기 | 바로가기 | 바로가기 | 바로가기 | ||
| ○ | ○ | Article | Effects of Thermally Induced Phase Transition on the Negative Thermo-Optic Properties of Atomic-Layer-Deposited TiO2 Films | The negative thermo-optic properties of TiO2 have been considered promising for athermal photonic devices that can mitigate the optical-performance instability due to temperature variations. When temperature increases, its negative thermo-optic coefficient (TOC) can compensate for the unfavorable increase in refractive index exhibited by widely used optical materials such as Si, which have positive TOCs. Herein, the structure-property relationship of TiO2 is thoroughly investigated to understand the negative thermo-optic behaviors of TiO2. Through atomic layer deposition and mild thermal annealing, the obtained negative TOC values are as high as -2.30 x 10(-4)/degrees C in the visible to the near-infrared regime. X-ray diffraction/reflectivity and temperature-dependent refractive index measurements identify that the higher crystallinity of anatase TiO2 leads to greater negative TOC values due to its higher density and lower porosity, compared to those of amorphous or weakly crystalline states. The Prod'homme model and band gap analysis reveal that the effect of volume expansion is more dominant on the enhanced negative TOC of TiO2, rather than the polarizability. Photoelectron spectroscopy measurements suggest an amorphous relaxation process during annealing that further supports the amorphous-to-crystalline transformation in TiO2. The findings of the structure and chemical properties governing the negative TOC of TiO2 for athermal applications may be of significant relevance to many photonic devices showing strong performance instability due to the high positive TOCs. | Park, Honghwi; Jung, Jaedong; Zhang, Yuxuan; Liu, Mingyuan; Lee, Jonghyung; Noh, Hyowoong; Choi, Muhan; Lee, Sunghwan; Park, Hongsik | Kyungpook Natl Univ, Sch Elect & Elect Engn, Daegu 41566, South Korea; Purdue Univ, Sch Engn Technol, W Lafayette, IN 47907 USA | Park, Honghwi/KIC-1871-2024; Yuan, Lei/AAB-5065-2019; Lee, Sunghwan/J-5424-2014 | 57206811785; 57209877588; 57406888900; 57219554958; 57227779600; 57209882167; 7402093793; 57192514024; 35366976200 | sunghlee@purdue.edu;hpark@ee.knu.ac.kr; | ACS APPLIED ELECTRONIC MATERIALS | ACS APPL ELECTRON MA | 2637-6113 | 4 | 2 | SCIE | ENGINEERING, ELECTRICAL & ELECTRONIC;MATERIALS SCIENCE, MULTIDISCIPLINARY | 2022 | 4.7 | 27.5 | 0.65 | 2025-06-25 | 7 | 8 | TiO2; negative thermo-optic property; photonic devices; athermalization; crystallinity; anatase | TITANIUM-DIOXIDE; REFRACTIVE-INDEXES; OPTICAL-PROPERTIES; THIN-FILMS; MICRORING RESONATORS; RING RESONATORS; WAVE-GUIDES; ANATASE; RUTILE; TEMPERATURE | anatase; athermalization; crystallinity; negative thermo-optic property; photonic devices; TiO<sub>2</sub> | Atomic layer deposition; Energy gap; Infrared devices; Photonic devices; Refractive index; Titanium dioxide; Athermalization; Atomic layer deposited; Coefficient values; Cristallinity; Induced phase transition; Negative thermo-optic property; Photonics devices; Thermally induced; Thermo-optic properties; Thermooptic coefficients; Crystallinity | English | 2022 | 2022-02-22 | 10.1021/acsaelm.1c01041 | 바로가기 | 바로가기 | 바로가기 | 바로가기 |
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