Effects of high power pulsed microwave on the enhanced color and flavor of aged blueberry wine

Siyuan Liu,Shuangjian Li,Siyuan Li,Ying Wang,Linlin Fan,Jianzhong Zhou 한국식품과학회 2024 Food Science and Biotechnology Vol.33 No.1

A new method of high-power pulsed microwave (HPPM) was applied to accelerate the aging of blueberry wine. The color changes of blueberry wines during aging were investigated through Chemical Wine Age and CIE-LAB measurement. Results showed that the blueberry wines treated by HPPM at low frequencies (50 and 100 Hz) exhibited improved color characteristics with L* value reaching 47.04 at 100 Hz, an increased maturity of wine body, and a shortened chemical wine age from 90 days to 75 days. Moreover, the aroma changes determined by GC-MS showed that HPPM accelerated the formation of esters in blueberry wine, which were increased by 18.44% and 56.97% respectively under the conditions of 50 and 150 Hz. The formation of acid substances was reduced compared with the original wine, with contents of acetic acid, caproic acid, and octanoic acid of 29.46 µg/mL, 15.60 µg/mL, 17.74 µg/mL, respectively, displaying an enhanced wine flavor.

Aerodynamic coefficients of inclined and yawed circular cylinders with different surface configurations

Siyuan Lin,Mingshui Li,Haili Liao 한국풍공학회 2017 Wind and Structures, An International Journal (WAS Vol.25 No.5

nclined and yawed circular cylinder is an essential element in the widespread range of structures. As one of the applications, cables on bridges were reported to have the possibility of suffering a kind of large amplitude vibration called dry galloping. In order to have a detailed understanding of the aerodynamics related to dry galloping, this study carried out a set of wind tunnel tests for the inclined and yawed circular cylinders. The aerodynamic coefficients of circular cylinders with three surface configurations, including smooth, dimpled pattern and helical fillet are tested using the force balance under a wide range of inclination and yaw angles in the wind tunnel. The Reynolds number ranges from 2 X105 to 7X105 during the test. The influence of turbulence intensity on the drag and lift coefficients is corrected. The effects of inclination angle yaw angle and surface configurations on the aerodynamic coefficients are discussed. Adopting the existed the quasi-steady model, the nondimensional aerodynamic damping parameters for the cylinders with three kinds of surface configurations are evaluated. It is found that surface with helical fillet or dimpled pattern have the potential to suppress the dry galloping, while the latter one is more effective.

Genetic algorithm‐based content distribution strategy for F‐RAN architectures

Xujie Li,Ziya Wang,Ying Sun,Siyuan Zhou,Yanli Xu,Guoping Tan 한국전자통신연구원 2019 ETRI Journal Vol.41 No.3

Fog radio access network (F‐RAN) architectures provide markedly improved performance compared to conventional approaches. In this paper, an efficient genetic algorithm‐based content distribution scheme is proposed that improves the throughput and reduces the transmission delay of a F‐RAN. First, an F‐RAN system model is presented that includes a certain number of randomly distributed fog access points (F‐APs) that cache popular content from cloud and other sources. Second, the problem of efficient content distribution in F‐RANs is described. Third, the details of the proposed optimal genetic algorithm‐based content distribution scheme are presented. Finally, simulation results are presented that show the performance of the proposed algorithm rapidly approaches the optimal throughput. When compared with the performance of existing random and exhaustive algorithms, that of the proposed method is demonstrably superior.

Multiple Primary Cardiac Malignant Peripheral Nerve Sheath Tumors in the Left Atrium: Case Report

Junfei Li,Qiansu Chen,Shaomei Yu,Siyuan Yang 대한흉부외과학회 2021 Journal of Chest Surgery (J Chest Surg) Vol.54 No.5

Malignant peripheral nerve sheath tumors are rare sarcomas of the heart. Herein, we re- port the case of a 24-year-old man who complained of dyspnea, cough, and upper left back pain. He was found to have multiple primary heart tumors obstructing the right su- perior pulmonary vein in the left atrium, which were diagnosed as malignant peripheral nerve sheath tumors. The patient underwent successful resection of the tumors and im- munohistochemistry was utilized for diagnosis.

Developing Sustainable Clothing Design Using Chinese Auspicious Patterns

Dongxue Li,박주희,김승현,Siyuan Liu 한국복식학회 2022 International journal of costume and fashion Vol.22 No.2

Chinese auspicious patterns(吉祥图案) have been widely applied to Chinese garments. In order to develop sustainable and innovative clothing design using Chinese auspicious patterns, this paper explored how the patterns were applied to the traditional costumes, and figured out how the concept of cherishing things embodied through the auspicious forms. On this basis, we developed four designs conveying sustainablity. The conclusions are as follows: firstly, by exploring the expression forms and symbolic meanings of auspicious patterns of Chinese traditional clothing. In this paper, we categorized them into three main categories, covering auspicious patterns in Chinese character form, auspicious patterns in pictographic form and comprehensive patterns. Secondly, this paper derived a concept of cherishing things(惜物) from Chinese culture, and developed a three-dimensional model showing how the concept can be applied: they are splicing of the waste fabrics, weaving and embroidering with waste or abandoned materials, and dyeing and painting with natural dyes. In addition, in the design practice, the upcycling of traditional Chinese auspicious patterns were completed by using three-dimensional models to realize the sustainable design of auspicious patterns. Finally, this paper developed a new fashion design that demonstrates the possibilities of diverse clothing design.

Aerodynamic coefficients of inclined and yawed circular cylinders with different surface configurations

Lin, Siyuan,Li, Mingshui,Liao, Haili Techno-Press 2017 Wind and Structures, An International Journal (WAS Vol.25 No.5

Inclined and yawed circular cylinder is an essential element in the widespread range of structures. As one of the applications, cables on bridges were reported to have the possibility of suffering a kind of large amplitude vibration called dry galloping. In order to have a detailed understanding of the aerodynamics related to dry galloping, this study carried out a set of wind tunnel tests for the inclined and yawed circular cylinders. The aerodynamic coefficients of circular cylinders with three surface configurations, including smooth, dimpled pattern and helical fillet are tested using the force balance under a wide range of inclination and yaw angles in the wind tunnel. The Reynolds number ranges from $2{\times}10^5$ to $7{\times}10^5$ during the test. The influence of turbulence intensity on the drag and lift coefficients is corrected. The effects of inclination angle yaw angle and surface configurations on the aerodynamic coefficients are discussed. Adopting the existed the quasi-steady model, the nondimensional aerodynamic damping parameters for the cylinders with three kinds of surface configurations are evaluated. It is found that surface with helical fillet or dimpled pattern have the potential to suppress the dry galloping, while the latter one is more effective.

Synthesis of Sulfonated Fluorenyl-Containing Poly(ether ether ketone ketone)s and Their Blends with an Amino-Functionalized Poly(ether ether ketone) for Fuel Cell Applications

Long Li,Baijun Liu,Siyuan Liu,Zhuang Liu,Yunwu Yu,Liwei Jing,Zhenhua Jiang 한국고분자학회 2013 Macromolecular Research Vol.21 No.7

A new family of sulfonated fluorenyl-containing poly(ether ether ketone ketone)s (SFPEEKKs) were successfully synthesized through a mild postsulfonation in concentrated sulfuric acid at room temperature. Further, a series of “molecule-enhanced” blend membranes were prepared based on SFPEEKKs and an amino-functionalized poly(ether ether ketone) by the solution casting method. These blend membranes generally showed higher thermal stability, lower swelling ratio and methanol permeability and superior mechanical properties in comparison with pristine SFPEEKK membranes. The results showed that some blend membranes may be promising proton exchange membranes for fuel cell applications.

In Vitro Effects of SB202190 on Echinococcus granulosus

Hailong Lv,Siyuan Li,Jing Zhang,Weihua Liang,Xiaoling Mu,Yufeng Jiang 대한기생충학열대의학회 2013 The Korean Journal of Parasitology Vol.51 No.2

Spillage of cyst contents during surgical operation is the major cause of recurrence after hydatid cyst surgery. Instillation of a scolicidal agent into a hepatic hydatid cyst is the most commonly employed measure to prevent this complication. SB202190 is a pyridinyl imidazole derivative and is known to be a specific inhibitor of p38 MAPK. In the present study, the scolicidal effect of SB202190 was investigated. Freshly isolated Echinococcus granulosus protoscolices were subjected to SB202190 treatment (10, 20, 40, and 80 μM), and the effects on parasite viability were monitored by trypan blue staining. Corresponding effects were visualized by scanning and transmission electron microscopy. Dose-dependent protoscolex death within a few days of SB202190 treatment was observed. Although the in vitro scolicidal effect of SB202190 was satisfactory, the in vivo efficacy of this drug and also possible side effects remain to be further investigated.

Thirty-two-tupling frequency millimeter-wave generation based on eight Mach-Zehnder modulators connected in parallel

Xinqiao Chen,Siyuan Dai,Zhihan Li,Wenyao Ba,Xu Chen 한국전자통신연구원 2024 ETRI Journal Vol.46 No.2

A new method is proposed to generate a 32-tupling frequency millimeter wave (MMW) with eight Mach-Zehnder modulators (MZMs) connected in parallel. Theoretical analyses and simulation experiments are conducted. The optical sideband suppression ratio (OSSR) of the obtained ±16th order optical side-bands are 61.54 dB and 61.42 dB, and the radio frequency spurious suppression ratios (RFSSRs) of the generated 32-tupling frequency MMW are 55.52 dB and 55.27 dB based on the theoretical analysis and simulation experiments, respectively; these outcomes verified the feasibility of the new method. The main parameters used to affect the stability of the generated signal are the modulation index and extinction ratio of MZM. Their effects on the OSSR and RFSSR of the generated signals are investigated when they deviate from their designed values. Compared with the other proposed methods for the generation of 32-tupling fre-quency MMW by MZM, our method has the best spectral purity and stability, and it is expected to have important MMW over fiber applications.

Acetylated starch-based biodegradable materials with potential biomedical applications as drug delivery systems

Ling Chen,Xiaoxi Li,Lin Li,Siyuan Guo 한국물리학회 2007 Current Applied Physics Vol.7 No.s1

from tablets coated with starch-based polymer were examined. Maize starch acetates (SA) were prepared by acetyl esterication with adegree of substitution from 1.31 to 2.40, and bovine serum albumin was used as a model drug. Forin-vitrodrug release assays, the starch-based polymer was incubated in simulated gastric uid, simulated intestinal uid and simulated colonic uid, respectively. The resistantstarch content and swelling property of maize starch were increased by acetylation, which retarded its enzymatic degradation. Drugfor a potential drug delivery carrier for colon-targeting biomacromolecule drugs.