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Jingjing Lin,Song Yan,Xiaojie Zhang,Yueran Liu,Jun Lian,Hualin Lin,Wei Wei,Deli Lu,Sheng Han 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2019 NANO Vol.14 No.4
Holey Fe-Anderson-type polyoxometalate/polyaniline/graphene (PPG) hybrid materials were first prepared by anchoring Anderson-type polyoxometalates [FeMo6O24H6]3- (FeMo6) onto graphene modified with polyaniline via a facile hydrothermal treatment. The as-prepared materials exhibited an excellent electrochemical performance with a high specific capacitance of 1366 F g -1 at 1 A g -1 and outstanding cycling stability (97.6% capacitance retention after 5000 cycle times). The uptake of polyaniline/FeMo6 nanoparticles on graphene not only provided the pseudocapacitance but also weakened the aggregation between the graphene layers, resulting in a higher surface area compared with pure graphene. In addition, the AC//PPG-15 asymmetric supercapacitor device showed a high energy density of 24.65 W h kg -1 at a low power density of 326.25 W kg -1 and good cycling stability (94.82% capacitance retention after 5000 cycles). Hence, the as-prepared PPG hybrid materials in this work possess tremendous potential as electrodes for high-performance supercapacitors.
Positive biodiversity-productivity relationship predominant in global forests
Liang, Jingjing,Crowther, Thomas W.,Picard, Nicolas,Wiser, Susan,Zhou, Mo,Alberti, Giorgio,Schulze, Ernst-Detlef,McGuire, A. David,Bozzato, Fabio,Pretzsch, Hans,de-Miguel, Sergio,Paquette, Alain,H&eac American Association for the Advancement of Scienc 2016 Science Vol.354 No.6309
<P>The biodiversity-productivity relationship (BPR) is foundational to our understanding of the global extinction crisis and its impacts on ecosystem functioning. Understanding BPR is critical for the accurate valuation and effective conservation of biodiversity. Using ground-sourced data from 777,126 permanent plots, spanning 44 countries and most terrestrial biomes, we reveal a globally consistent positive concave-down BPR, showing that continued biodiversity loss would result in an accelerating decline in forest productivity worldwide. The value of biodiversity in maintaining commercial forest productivity alone-US$166 billion to 490 billion per year according to our estimation-is more than twice what it would cost to implement effective global conservation. This highlights the need for a worldwide reassessment of biodiversity values, forest management strategies, and conservation priorities.</P>
Diallyl Biphenyl-Type Neolignans Have a Pharmacophore of PPARα/γ Dual Modulators
( Yujia Han ),( Jingjing Liu ),( Sungjin Ahn ),( Seungchan An ),( Hyejin Ko ),( Jeayoung C. Shin ),( Sun Hee Jin ),( Min Won Ki ),( So Hun Lee ),( Kang Hyuk Lee ),( Song Seok Shin ),( Won Jun Choi ),( 한국응용약물학회 2020 Biomolecules & Therapeutics(구 응용약물학회지) Vol.28 No.5
Adiponectin secretion-promoting compounds have therapeutic potentials in human metabolic diseases. Diallyl biphenyl-type neolignan compounds, magnolol, honokiol, and 4-O-methylhonokiol, from a Magnolia officinalis extract were screened as adiponectin- secretion promoting compounds in the adipogenic differentiation model of human bone marrow mesenchymal stem cells (hBM-MSCs). In a target identification study, magnolol, honokiol, and 4-O-methylhonokiol were elucidated as PPARα and PPARγ dual modulators. Diallyl biphenyl-type neolignans affected the transcription of lipid metabolism-associated genes in a different way compared to those of specific PPAR ligands. The diallyl biphenyl-type neolignan structure provides a novel pharmacophore of PPARα/γ dual modulators, which may have unique therapeutic potentials in diverse metabolic diseases.
Zhongyi Han,Peng Gao,Jingjing Ai,Gongju Liu,Hanlin Xiao 한국광학회 2023 Current Optics and Photonics Vol.7 No.5
As an effective means of remotely detecting the spectral information of the object, the spectral calibration for the Savart polarization interference imaging spectrometer (SPIIS) is a basis and prerequisite of information quantification, and its experimental calibration scheme is firstly proposed in this paper. In order to evaluate the accuracy of the spectral information acquisition, the linear interpolation, cubic spline interpolation, and piecewise cubic interpolation algorithms are adopted, and the precision of the quadratic polynomial fitting is the highest, whose fitting error is better than 5.8642 nm in the wavelength range of [500 nm, 820 nm]. Besides, the inversed value of the spectral resolution for the monochromatic light is greater than the theoretical value, and the deviation between them becomes larger with the wavelength increasing, which is mainly caused by the structural design of the SPIIS, together with the rationality of the spectral restoration algorithm and the selection of the maximum optical path difference (OPD). This work demonstrates that the SPIIS has achieved high performance assuring the feasibility of its practical use in various fields.
Effect of a Bacterial Laccase on the Quality and Micro-Structure of Whole Wheat Bread
Wang Jingjing,Bai Han,Zhang Ran,Ding Guoao,Cai Xuran,Wang Wei,Zhu Guilan,Zhou Peng,Zhang Yan 한국미생물·생명공학회 2023 Journal of microbiology and biotechnology Vol.33 No.12
The gluten protein content in whole-wheat flour is low, which affects the elasticity and viscosity of the dough. Enzymatic modification of the protein may result in a network that mimics gluten, which plays an important role in the processing of whole-wheat foods. In this study, the effects of Halomonas alkaliantartica laccase (LacHa) on the quality parameters of whole-wheat bread were investigated. The optimum dosage of LacHa was 4 U/100 g of whole-wheat flour. At this dosage, whole-wheat bread exhibited the best specific volume and optimum texture parameters. Laccase also extended the storage duration of whole-wheat bread. We analyzed the micro-structure of the dough to determine its gluten-free protein extractable rate and free sulfhydryl group content, and verify that LacHa mediates cross-linking of gluten-free proteins. The results demonstrated that the cross-linking of gluten-free protein by LacHa improves the texture of whole-wheat bread. As a flour improver, LacHa has great developmental and application potential in baked-food production.
중의성 문장에서 단어 간 공백이 중국어 학습자의 독해에 미치는 효과
한미애(Han, Mi-ae),江新(Jiang, Xin),徐晶晶(Xu, Jingjing) 한국중국어교육학회 2018 중국어교육과연구 Vol.0 No.28
Overlapping ambiguous strings refers to the words in which middle character can constitute words with the characters to both their left and right, such as “按时/装” and “按/时装”. This study investigated whether the inter-word space, a space between the words, can affect the efficiency in Chinese reading by Korean-speaking CSL (Chinese as a second language) learners with the eye tracking technique. CSL learners of different proficiency levels (intermediate and advanced) and native Chinese readers were asked to read Chinese sentences of overlapping ambiguous strings with and without inter-word spaces. The results showed that the inter-word space had a facilitating effect on Chinese sentences reading. The global analysis showed that despite the longer physical length of the sentences with inter-word space, both CSL and native readers spent significantly less reading time and had significantly less mean fixation duration when they read under spaced condition. The local analysis showed similar results that participants spent significantly less reading time and significantly less fixation count than the no space condition. Furthermore, the facilitating effects were similar among the CSL readers of different proficiency.
Lin Wang,Jingjing Miao,Huageng Huang,Boyu Chen,Xiao Xiao,Manyi Zhu,Yingshan Liang,Weiwei Xiao,Shaomin Huang,Yinglin Peng,Xiaowu Deng,Xing Lv,Weixiong Xia,Yanqun Xiang,Xiang Guo,Fei Han,Chong Zhao 대한암학회 2022 Cancer Research and Treatment Vol.54 No.1
Purpose This study was aimed to investigate long-term survivals and toxicities of early-stage nasopharyngeal carcinoma (NPC) in endemic area, evaluating the role of chemotherapy in stage II patients. Materials and Methods Totally 187 patients with newly diagnosed NPC and restaged American Joint Committee on Cancer/ International Union Against Cancer 8th T1-2N0-1M0 were retrospectively recruited. All received intensity-modulated radiotherapy (IMRT)±chemotherapy (CT) from 2001 to 2010. Results With 15.7-year median follow-up, 10-year locoregional recurrence-free survival, distant metastasis-free survival (DMFS), disease-specific survival (DSS), and overall survival (OS) were 93.3%, 93.5%, 92.9% and 88.2%, respectively. Multivariable analyses showed cervical lymph nodes positive and pre-treatment prognostic nutritional index ≥ 52.0 could independently predict DMFS (p=0.036 and p=0.011), DSS (p=0.014 and p=0.026), and OS (p=0.002 and p < 0.001); Charlson comorbidity index < 3 points could predict DSS (p=0.011); age > 45 years (p=0.002) and pre-treatment lactate dehydrogenase ≥ 240 U/L (p < 0.001) predicted OS. No grade 4 late toxicity happened; grade 3 late toxicities included subcutaneous fibrosis (4.3%), deafness or otitis (4.8%), skin dystrophy (2.1%), and xerostomia (1.1%). No differences on survivals were shown between IMRT+CT vs. IMRT alone in stage II patients, even in T2N1M0 (p > 0.05). Unsurprising, patients in IMRT+CT had more acute gastrointestinal reaction, myelosuppression, mucositis, late ear toxicity, and cranial nerve injury (all p < 0.05) than IMRT alone group. Conclusion Superior tumor control and satisfying long-term outcomes could be achieved with IMRT in early-stage NPC with mild late toxicities. As CT would bring more toxicities, it should be carefully performed to stage II patients.