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Fa-yang Jin,Song Wang,Wan-Fen Pu,Cheng-dong Yuan,Lei Wang,Ke-xing Li,Can Gong 한국공업화학회 2016 Journal of Industrial and Engineering Chemistry Vol.39 No.-
Emulsified oil foam was investigated to improve the flowability of heavy oil under high salinityenvironment of 23 104 mg/L. Sixteen foaming agents were used to determine an applicableformulation. The factors affecting the formation and stability of the emulsified oil foam were evaluated,including oil viscosity, oil–water ratio, foaming agent concentration, stirring rate and time, andtemperature. The microgram of emulsified oil foam was analyzed by polarizing microscope. The resultsshowed that stable pseudo-emulsion film was built. The considerable dynamic viscosity-reducing ratesin different depth in wellbore were obtained according to pressure differential method in long tubephysical simulation experiments.
Physicochemical and Sensory Characterization of Ginger-juice Yogurt during Fermentation
Guo-Hao Yang,Jun-Jun Guan,Jin-Shui Wang,Haicheng Yin,Fa-Dong Qiao,Feng Jia 한국식품과학회 2012 Food Science and Biotechnology Vol.21 No.6
The primary purpose of this study was to investigate the effects of a ginger (Zingiber ofcinale) juice addition to milk on the physicochemical and sensory properties and consumer acceptability of yogurt during fermentation. Under the presence of ginger juice at 2.0 to 10.0%(v/v), there was a significant influence (p<0.05) on the viability of characteristic microorganisms in yogurt,the pH, titratable acidity (ºSH), viscosity, and hardness of the products. The descriptive data showed significant differences (p<0.05) among the samples for all attributes. The consumer results from external preference mapping indicated that samples with the lower ginger juice (≤4%)were liked over the higher samples (≥6%), with a negative impact on the acceptance by the consumers. Therefore,these findings suggest that 4%(v/v) may be the more appropriate content of ginger juice in the preparation of ginger-juice yogurt.
Jia-An Zhang,Nian-Fa Yang,Li-Wen Yang,Shi Wu,Ye-Hui Chen,Jin Zhang 한국고분자학회 2013 Macromolecular Research Vol.21 No.6
Three new chiral bisacylphosphine oxides, (-)-bis(menthylformyl)phenylphosphine oxide (1a), (+)-bis(2,4,6-trimethylbenzoyl)menthylphosphine oxide (2a), and (-)-bis(menthylformyl)menthylphosphine oxide (3a),were synthesized using menthol as a chiral source. The synthesized new chiral bisacylphosphine oxides were used as photoinitiators for the polymerization of 1-phenyldibenzosuberyl methacrylate (PDBSMA). The polymerization initiated by chiral bisacylphosphine oxides under UV light irradiation is helix-sense-selective. Among the three prepared chiral bisacylphosphine oxides, the helix-sense-selectivity of bis(menthylformyl)menthylphosphine oxide is highest. The highest specific rotation of poly(1-phenyldibenzosuberyl methacrylate) at 365 nm is +416. The feed molar ratio of monomer to chiral bisacylphosphine oxide and the polymerization temperature have an influence on the helix-sense-selectivity. The lower the feed molar ratio of monomer to chiral bisacylphosphine oxide, the better the helix-sense-selectivity is. The increase of polymerization temperature is propitious to increase the helix-senseselectivity of the photopolymerization.
Experimental investigation of viscoelastic polymers for stabilizing foam
Wan-Fen Pu,PENGWEI,Lin Sun,Fa-yang Jin,Song Wang 한국공업화학회 2017 Journal of Industrial and Engineering Chemistry Vol.47 No.-
Foam stability can be significantly improved by adding a polymer in foam system, mainly due to thereduction of liquid drainage and the enhancement of interfacial adsorption behavior. In this paper, wecombined rheological properties with surface properties to investigate the effect of different polymers onthe stability of polymer enhanced foam, and then analyzed the foam stability from microscopicviewpoint. From the results, the liquid drainage of polymer enhanced foam was highly depending on thesolution viscosity with a high shear-rate (200 s 1) instead of the initial thickening ability of polymer, andthe stability of liquidfilms was improved by increasing solution elasticity or interfacial viscoelasticity orby reducing surface tension. Finally, the micro-experiment revealed that the XG (xanthan gum) enhancedfoam possessed the dense and uniform gas bubbles and the thick and multi-layered liquidfilms, whichcontributes to the reduction of coalescence and the increase offilm strength.
Chunhui Zhao,Kunbing Ouyang,Nian-Fa Yang,Jin Zhang,Zhu Sheng Yang 한국고분자학회 2016 Macromolecular Research Vol.24 No.5
Six optically active oxide propane monomers (1m-6m) were synthesized in a very facile way. The monomers were polymerized using potassium hydroxide (KOH) as an initiator to afford the corresponding polyethers (1p-6p). The polyether (R)-1p (specific rotation, [α]=+331) exhibited optical rotation as large as fourfold that of the monomer (R)-1m ([α]=-10). The specific optical rotation, circular dichroism (CD) and ultraviolet (UV)-visible spectra data showed that the obtained polymers can keep a prevailing helicity of the backbone in solution.
Deng-xiong Li,Xiao-ming Wang,Yin Tang,Yu-bo Yang,Dechao Feng,Ao Li,Fa-cai Zhang,Yun-jin Bai,Ping Han 대한비뇨의학회 2021 Investigative and Clinical Urology Vol.62 No.6
Purpose: Many studies identified that the preoperative neutrophil-to-lymphocyte ratio (PNLR) was associated with patient prognosis in non-muscle-invasive bladder cancer (NMIBC). We hypothesized that PNLR could be prognostic in patients with histological variants of NMIBC (VH-NMIBC). Materials and Methods: This retrospective study included patients with VH-NMIBC admitted at our center between January 2009 and May 2019. The best cut-off value of NLR was measured by the receiver operating characteristic curve and Youden index. The Kaplan-Meier method and Cox proportional hazard regression models were employed to evaluate the association between PNLR and disease prognosis, including recurrence-free survival (RFS), progression-free survival (PFS), cancer-specific survival (CSS), and overall survival (OS). Results: A total of 243 patients with VH-NMIBC were enrolled in our study. According to the Kaplan-Meier method results, patients with PNLR ≥2.2 were associated with poor RFS (p<0.001), PFS (p<0.001), CSS (p<0.001), and OS (p<0.001). Multivariable analyses indicated that PNLR ≥ 2.2 was an independent prognostic factor of RFS (hazard ratio [HR], 2.11; 95% confidence interval [CI, 1.57–1.83; p<0.001), PFS (HR, 2.34; 95% CI, 1.70–3.21; p<0.001), CCS (HR, 2.87; 95% CI, 1.96–4.18; p< 0.001), and OS (HR, 2.83; 95% CI, 1.96–4.07; p<0.001). Conclusions: This study identified that PNLR ≥2.2 was usually associated with a poor prognosis for patients with VH-NMIBC.
Ge, Nai-Jian,Shi, Zhi-Yong,Yu, Xiao-He,Huang, Xiao-Jun,Wu, You-Sheng,Chen, Yuan-Yuan,Zhang, Jin,Yang, Ye-Fa Asian Pacific Journal of Cancer Prevention 2015 Asian Pacific journal of cancer prevention Vol.16 No.9
Background: Hepatocellular carcinoma (HCC) is one of the most prevalent malignancies worldwide. Transarterial chemoembolisation (TACE) is the standardized therapy for intermediate stage HCC. However, the prognosis for HCC patients treated by TACE greatly varies. Thus, there is a critical need for finding biomarkers to predict the prognosis of HCC patients. The amino acid transporter-2 (ASCT2) is involved in tumorigenesis and progression of many malignancies. This study aimed to evaluate the predictive role of two single nuclear polymorphisms (SNPs, rs3826793 and rs2070246) in the ASCT2 gene in HCC patients treated by TACE. Materials and Methods: Two functional SNPs (rs3826793 and rs2070246) in the ASCT2 gene were selected and genotyped using the Sequenom iPLEX genotyping system in a cohort of 448 unresectable Chinese HCC patients treated by TACE. Univariate and multivariate Cox proportional hazards models and Kaplan-Meier curves were used for the prognosis analyses. Results: There was no significant association between two SNPs (rs3826793 and rs2070246) in the ASCT2 gene and overall survival of TACE treated HCC patients. However, we demonstrated that patients with early stage HCC carrying T genotype in rs2070246 showed better OS than those carrying CC genotype (P=0.023). Conclusions: We demonstrated that patients with early stage HCC carrying T genotype in rs2070246 showed better OS than those carrying CC genotype.
Low temperature oxidation characteristics analysis of ultra-heavy oil by thermal methods
Yi-Bo Li,Ya-Fei Chen,Wan-Fen Pu,Hong Dong,Hao Gao,Fa-yang Jin,Bing Wei 한국공업화학회 2017 Journal of Industrial and Engineering Chemistry Vol.48 No.-
To study the oxidation behavior of heavy oils, low temperature oxidation experiments under differentialtemperature and pressure conditions were carried out for both heavy oils (ordinary heavy and ultraheavyoils) with thermogravimetry (TG–DTG)/differential scanning calorimeter (DSC) analyses. And theresults indicated that the differences of physical properties and oxidation reactions for the heavy oilsascribe to the SARA compositions, H/C ratio and specific oxidation path. Owing to the asphaltenescontent, the ultra-heavy oil after the oxidation has more obvious coke deposition with lower activationenergy demand to make it possible for the in-situ combustion without combustion adjuvants.