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???(Yang Jian-qiao) 고려대학교 한자한문연구소 2006 동아한학연구 Vol.- No.2
Yisheng zhi zhuan(一?之?), mainly refer to thephenomenon of the etymological chains formed by some Chinese characters and words with same or similar initials. But nowadays this traditionalterm and its accompanying methodology are still in wide use and sometimes nearly without any limitations. This paper argues that indeed Yisheng zhi zhuan can't help to clarify the etymon in the chain at all, so it is not scientific in modern view, which is its inherent deficiency. So modern linguists should avoid using the term, andmanage to construct a new paradigm under which to make the study of the Paronyms.
Qiao Yang,Na Lu,Lei Wang,Xiao-qing Huang,Da-quan Yang,Jin Sun 한국원예학회 2018 원예과학기술지 Vol.36 No.5
A physiological disorder, called tipburn, commonly occurs in lettuce (Lactuca sativa L.), particularly in greenhouse cultivation and in hot seasons, and reduces its marketability. Calcium (Ca) deficiency is the main cause of tipburn injury. In the present study, we investigated the effect of exogenous spermidine (Spd) on the occurrence of tipburn in hydroponically cultivated head lettuce (var. capitata L.) and elucidated the role of Ca ions (Ca<SUP>2+</SUP>) in its prevention with respect to absorption and transport. Ca deficiency in the nutrient solution resulted in reduced uptake of Ca<SUP>2+</SUP> in lettuce roots, thereby resulting in Ca deficiency in leaves, leading to leaf senescence and tipburn. An application of exogenous Spd promoted Ca<SUP>2+</SUP> uptake in lettuce roots under Ca deficiency and promoted Ca<SUP>2+</SUP> transportation to leaves, especially to inner leaves, thus delaying leaf senescence and reducing the incidence of tipburn. The results indicated that application of exogenous Spd is an effective method to decrease tipburn in lettuce caused by Ca deficiency.
Preparation and Properties of Cellulose Nanocrystals Based Self-healing Polyurethane
Yang Qiao,Qi Xu,Shouxiang Liu,Zhiqiang Li,Yanyan Wei 한국고분자학회 2023 폴리머 Vol.47 No.3
First, cellulose nanocrystals were extracted from microcrystalline cellulose using the sulfuric acid hydrothermal method. Second, imine aromatic diol (Imine) was synthesized from p-hydroxybenzaldehyde and 4,4'-diaminodiphenylmethane as raw materials. Then the imine was introduced into the polyurethane, and the reversible covalent bond between the imine and the C = N group was used to endow the polyurethane with self-healing properties. Finally, cellulose nanocrystalline (CNC) was added into the self-healing polyurethane as the dispersed phase to prepare the composite. The experimental results show that with the increase of the amount of CNC, the properties of the composites increase first and then decrease, which is due to the physical cross-linking effect of proper CNC distribution in the self-healing polyurethane, it is beneficial to the mechanical properties, but the self-healing property is reduced by further increasing the content, which restricts the movement of the molecular chain. The mechanical properties of the composite with 0.049 g CNC are the best, with fracture strength reaching 20.59 MPa, approximately 1.56 times higher than that of pure self-healing polyurethane, and its elongation at break is 979%, and the self-healing efficiency reaches 84.7%, keeping an excellent level.
Exogenous Spermidine Promoted Ca2+ Absorption in Lettuce Roots and Reduced the Incidence of Tipburn
Qiao Yang,Na Lu,Lei Wang,Xiao-qing Huang,Da-quan Yang,Jin Sun 한국원예학회 2018 원예과학기술지 Vol.36 No.5
A physiological disorder, called tipburn, commonly occurs in lettuce (Lactuca sativa L.), particularly in greenhouse cultivation and in hot seasons, and reduces its marketability. Calcium (Ca) deficiency is the main cause of tipburn injury. In the present study, we investigated the effect of exogenous spermidine (Spd) on the occurrence of tipburn in hydroponically cultivated head lettuce (var. capitata L.) and elucidated the role of Ca ions (Ca2+) in its prevention with respect to absorption and transport. Ca deficiency in the nutrient solution resulted in reduced uptake of Ca2+ in lettuce roots, thereby resulting in Ca deficiency in leaves, leading to leaf senescence and tipburn. An application of exogenous Spd promoted Ca2+ uptake in lettuce roots under Ca deficiency and promoted Ca2+ transportation to leaves, especially to inner leaves, thus delaying leaf senescence and reducing the incidence of tipburn. The results indicated that application of exogenous Spd is an effective method to decrease tipburn in lettuce caused by Ca deficiency.
D-RADA16-RGD-Reinforced Nano-Hydroxyapatite/Polyamide 66 Ternary Biomaterial for Bone Formation
Bo Qiao,Bin He,Ao Zhou,Yuling Li,Xiaojun Chen,Qiming Yang,Beike Chen,Bo Qiao,Dianming Jiang 한국조직공학과 재생의학회 2019 조직공학과 재생의학 Vol.16 No.2
BACKGROUND: Nano-hydroxyapatite/polyamide 66 (nHA/PA66) is a composite used widely in the repair of bone defects. However, this material is insufficient bioactivity. In contrast, D-RADA16-RGD self-assembling peptide (DRADA16- RGD sequence containing all D-amino acids is Ac-RADARADARADARADARGDS-CONH2) shows admirable bioactivity for both cell culture and bone regeneration. Here, we describe the fabrication of a favorable biomaterial material (nHA/PA66/D-RADA16-RGD). METHODS: Proteinase K and circular dichroism spectroscopy were employed to test the stability and secondary structural properties of peptide D-RADA16-RGD respectively. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) were used to characterize the surface of these materials. Confocal laser scanning (CLS), cell counting kit-8 tests (CCK-8), alizarin red S staining, cell immunofluorescence analysis and Western blotting were involved in vitro. Also biosafety and bioactivity of them have been evaluated in vivo. RESULTS: Proteinase K and circular dichroism spectroscopy demonstrated that D-RADA16-RGD in nHA/PA66 was able to form stable-sheet secondary structure. SEM and TEM showed that the D-RADA16-RGD material was 7–33 nm in width and 130–600 nm in length, and the interwoven pore size ranged from 40 to 200 nm. CLS suggests that cells in nHA/PA66/ D-RADA16-RGD group were linked to adjacent cells with more actin filaments. CCK-8 analysis showed that nHA/PA66/ D-RADA16-RGD revealed good biocompatibility. The results of Alizarin-red S staining and Western blotting as well as vivo osteogenesis suggest nHA/PA66/D-RADA16-RGD exhibits better bioactivity. CONCLUSION: This study demonstrates that our nHA/PA66/D-RADA16-RGD composite exhibits reasonable mechanical properties, biocompatibility and bioactivity with promotion of bone formation.
Lin Fang,Fei-Hu Yan,Chao Liu,Jing Chen,Dan Wang,Chun-Hui Zhang,Chang-Jie Lou,Jie Lian,Yang Yao,Bo-Jun Wang,Rui-Yang Li,Shu-Ling Han,Yi-Bing Bai,Jia-Ni Yang,Zhi-Wei Li,Yan-Qiao Zhang 대한암학회 2021 Cancer Research and Treatment Vol.53 No.1
Purpose Systemic inflammatory response is a critical factor that promotes the initiation and metastasis of malignancies including pancreatic cancer (PC). This study was designed to determine and compare the prognostic value of neutrophil-to-lymphocyte ratio (NLR), platelet-to-lymphocyte ratio (PLR), monocyte-to-lymphocyte ratio (MLR), and fibrinogen-to-albumin ratio (FAR) in resectable PC and locally advanced or metastatic PC. Materials and Methods Three hundred fifty-three patients with resectable PC and 807 patients with locally advan-ced or metastatic PC were recruited in this study. These patients were classified into a training set (n=758) and a validation set (n=402). Kaplan-Meier survival plots and Cox proportional hazards regression models were used to analyze prognosis. Results Overall survival (OS) was significantly better for patients with resectable PC with low preoperative PLR (p=0.048) and MLR (p=0.027). Low FAR, MLR, NLR (p < 0.001), and PLR (p=0.003) were significantly associated with decreased risk of death for locally advanced or metastatic PC patients. FAR (hazard ratio [HR], 1.522; 95% confidential interval [CI], 1.261 to 1.837; p < 0.001) and MLR (HR, 1.248; 95% CI, 1.017 to 1.532; p=0.034) were independent prognostic factors for locally advanced or metastatic PC. Conclusion The prognostic roles of FAR, MLR, NLR, and PLR in resectable PC and locally advanced or metastatic PC were different. FAR showed the most prognostic power in locally advanced or metastatic PC. Low FAR was positively correlated with OS in locally advanced or metastatic PC, which could be used to predict the prognosis.
The Diet Imbalance and Its Corrective Action in Chinese Athletes
Yang, ZeYi,Zhou, Lili,Yi, Muqing,Wang, Qirong,Gao, Hong,Xu, BaoHua,Qiao, Li,Chen, Jidi,Huang, Yuan,He, Cong,Wu, Wei,Sun, Nan,Chen, Rui 한국체육무용국제교류학회 2001 한국체육무용국제교류학회지 Vol.7 No.-
Diet is the most important substantial base to ensure athletes nutrients needs and maintain the performance. It is important for the Olympic Gold Medal Strategy. An athlete is like a racing car. Therere two key factors for the car to run faster: the engine and the gasoline. The physical components decide the engines highest power while the diet is like the gasoline the better quality of the gasoline is, the faster the urns. It is inconsistent between the importance of diet for competitive sports and the ubiquity of diet imbalance. It will influence the training efficiency and the recovery after training for a long time, and consequently hinder the improvement of the performance.