http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Liu Qinglong,Li Xiaojing,Zhang Hao,Li Haitao 대한암예방학회 2022 Journal of cancer prevention Vol.27 No.1
Mannose has recently drawn extensive attention for its substantial anti-cancer activities, but the underlying mechanism remains largely unclear. The aim of this study was to investigate the effects of mannose on experimental colitis-associated colorectal tumorigenesis and underlying mechanisms. Data clearly showed that at plasma concentrations achieved after oral administration, mannose slightly affected malignancy of tumor cells or tumor promoter-induced transformation of pre-neoplastic cells, but substantially suppressed manifestation of the M2-like phenotype of tumor-associated macrophages (TAMs) in a cancer cell and macrophage co-culture model. Mechanistically, mannose might greatly impair the production of tumor cell-derived lactate which has a critical role in the functional polarization of TAMs. Importantly, oral administration of mannose protected mice against colitis-associated colorectal tumorigenesis by normalizing TAM polarization. Collectively, these findings highlight the importance of TAMs in colorectal tumorigenesis, and provide a rationale for introducing mannose supplementation to patients suffering from inflammatory bowel diseases
Adsorption and electro-assisted method removal of boron in aqueous solution by nickel hydroxide
Tao Song,Qinglong Luo,Fengfeng Gao,Bing Zhao,Xiaogang Hao,Zhong Liu 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.118 No.-
Technical research on electrochemical acid-free desorption of boron is imminent, and layered nickelhydroxide is a potential boron-responsive active electrode material. In this paper, nickel hydroxidewas used to remove boron from aqueous resources by electro-assisted and conventional adsorptionmethods. The option of conditions by nickel hydroxide adsorption for boron is mild (pH: 7 9) withan exothermic process. Interestingly, the synergistic effect of physical and chemical adsorption improvesthe adsorption rate and adsorption capacity of nickel hydroxide for boron under the action of the electricfield, and the adsorption performance is better at low voltage (0.2 0.4 V). The equilibrium time of theelectro-assisted method is 4 times shorter than conventional adsorption methods, and the maximumadsorption capacity can reach 57.5 mg/g than conventional adsorption (45.4 mg/g). In addition, the nickelhydroxide has selectivity in high-concentration anion solutions and can be easily regenerated by an alkalinesolution. Therefore, it is expected that nickel hydroxide with the electro-assisted method could be apotential approach for the high-efficiency and eco-friendly removal of boron.
Zuo, Chaohui,Xia, Man,Liu, Jingshi,Qiu, Xiaoxin,Lei, Xiong,Xu, Ruocai,Liu, Hanchun,Li, Jianliang,Li, Yongguo,Li, Qinglong,Xiao, Hua,Hong, Yuan,Wang, Xiaohong,Zhu, Haizhen,Wu, Qunfeng,Burns, Michael,Li Asian Pacific Journal of Cancer Prevention 2015 Asian Pacific journal of cancer prevention Vol.16 No.1
Objectives: Intrahepatic recurrence is the major cause of death among patients with hepatitis B virus (HBV)-related hepatocellular carcinoma (HCC) after curative surgical resection. Several approaches have been reported to decrease the recurrence rate. The objective of our study was to compare the clinical effects of transcatheter arterial chemoembolization (TACE) combined with interferon-alpha (IFN-${\alpha}$) therapy on recurrence after hepatic resection in patients with HBV-related HCC with that of TACE chemotherapy alone. Methods: We retrospectively analyzed the data from 228 patients who were diagnosed with HBV-related HCC and underwent curative resection between January 2001 to December 2008. The patients were divided into TACE (n = 126) and TACE-IFN-${\alpha}$ (n = 102) groups for postoperative chemotherapy. The TACE regimen consisted of 5-fluorouracil (5-FU), cisplatin (DDP), and the emulsion mixed with mitomycin C (MMC) and lipiodol. The recurrence rates, disease-free survival (DFS), overall survival (OS), and risk of recurrence were evaluated. Results: The clinicopathological parameters and adverse effects were similar between the 2 groups (P > 0.05). The median OS for the TACE-IFN-${\alpha}$ group (36.3 months) was significantly longer than that of the TACE group (24.5 months, P < 0.05). The 3-and 5-year OS for the TACE-IFN-${\alpha}$ group were significantly longer than those of the TACE group (P < 0.05) and the recurrence rate was significantly lower (P < 0.05). The TACE and IFN-${\alpha}$ combination therapy, active hepatitis HBV infection, the number of tumor nodules, microvascular invasion, liver cirrhosis, and the BCLC stage were independent predictors of OS and DFS. Conclusions: The use of the TACE and IFN-${\alpha}$ combination chemotherapy after curative hepatic resection safely and effectively improves OS and decreases recurrence in patients with HBV-related HCC who are at high risk. Our findings can serve as a guide for the selection of postoperative adjuvant chemotherapy for patients with HBV-related HCC who are at high risk of recurrence.
Analysis and Development of the CFRP Boring Bar for Stability Improvement
Licheng Lu,Can Ni,Gang Liu,Bo Qian,Qinglong An,Zhenzhen Cao,Liqiang Zhang,Junli Li 한국섬유공학회 2023 Fibers and polymers Vol.24 No.12
Boring bars with a large length-to-diameter ratio have become increasingly indispensable for deep hole machining. However, the dynamic performance of conventional boring bars may be inadequate, resulting in vibrations. In this paper, a novel boring bar with composites and a constrained layer damping structure was fabricated to suppress vibrations during the boring operation. Initially, the configuration of the CFRP boring bar was proposed based on theoretical analysis, and then the modal parameters were calculated using the bending strain energy method and cantilever beam theory. Subsequently, the geometric design parameters were optimized analytically using the finite element method. Modal and cutting tests were then conducted to evaluate the cutting stability of a CFRP boring bar with a length-to-diameter ratio of 8.4. The modal parameters, vibration signals, and cutting force signals were measured and compared with a carbide boring bar. The experimental results indicated that there was a significant improvement in the cutting stability of the CFRP boring bar.
Stability Comparison of Paralleled String Inverters and Central Inverters in PV System
Changzhou Yu,Haizhen Xu,Chun Liu,Qinglong Wang,Xing Zhang,Fang Liu,Fei Li 전력전자학회 2019 ICPE(ISPE)논문집 Vol.2019 No.5
Mega-scale solar projects are turning to string inverters nowadays. Multi-parallel string inverters are employed as the interface to the utility grid, giving rise to potential unstable problems. Aiming at this issue, the relationship between number of inverters, output power and grid impedance is analyzed. Based on this, according to different topology, control structures and filter parameters, four types of Standard Equivalent Model (SEM) for multiinverters system are established. By analyzing the stability margin of the four SEMs and the sensitivity of their control parameters, the difference of stability between the string inverters and the central inverters is compared. Finally, the established SEM and the comparison results of the string and central inverters are verified by simulation and experimental results.
A Virtual Inertia Control Strategy Based on Multi-order lead-lag Compensation
Haizhen Xu,Changzhou Yu,Chun Liu,Qinglong Wang,Xing Zhang 전력전자학회 2019 ICPE(ISPE)논문집 Vol.2019 No.5
In view of the contradiction between active power steady-state and dynamic characteristics regulation of VSG based on the existing first-order virtual inertia algorithm operating in grid- connected mode and multiparalleled mode, a virtual inertia control strategy based on multi-stage lead-lag compensation is proposed in this paper. By cascading a multi-stage lead-lag link in the first -order virtual inertia forward channel, the control freedom of VSG grid-connected and paralleled system is increased, so that the zero and poles can be freely configured. Furthermore, a firstorder lead-lag link is taken as an example to analyze its effect on the output active power steady-state and dynamic characteristics of VSG grid-connected system and paralleled systems. Through reasonable configuration of the secondorder virtual inertia parameters, the system damping ratio can be increased and the power oscillation can be eliminated while its steady-state characteristics are not changed under the circumstance of a large inertia. Experimental results verify the effectiveness of the proposed strategy.
Wang Boyu,Guo Xiaolin,Yuan Lin,Fang Qinglong,Wang Xiaojuan,Qiu Tianyi,Lai Caifeng,Wang Qi,Liu Yang 한국원자력학회 2023 Nuclear Engineering and Technology Vol.55 No.5
In this study, a series of flexible neutron/gamma shielding composites are fabricated through the doping of Gd2O3 into the matrix of SEBS with (MGd2O3: MSEBS) % from 5% to 100%. Neutron transmittance test shows an exponential attenuation with the increase of areal density of Gd, in which the transmittance T ranges from 59.1440% to 35.3026%, with standard deviation less than 2.2743%, mass attenuation coefficient mm from 0.3194 cm2 /g to 0.4999 cm2 /g, and half value layer-HVL value from 2.4530 mm to 1.1313 mm. Shielding efficiency of the Gd2O3/SEBS composites is basically improved in comparison with that of B4C/SEBS. The transmittance T, mass/linear attenuation coefficient mm and m, HVL and effective atomic number Zeff for the shielding of g rays (39 keV, 59 keV and 122 keV) are measured and calculated with XCOM as well as MCX programs. Finally, plots of the three dimensional relationships between transmittance, doping amount and thickness are provided to the guidance for engineering shielding design. In summary, the Gd2O3/SEBS composite is proved to be an effective flexible neutron/low energy g rays shielding material, which could be of potential applications in the field of nuclear technology and nuclear engineering.
Fang Nie,Changyin Feng,Naveed Ahmad,Mengfei Tian,Qinglong Liu,Weihao Wang,Ziqi Lin,Chunying Li,Chunjian Zhao 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.118 No.-
Echinacoside and acteoside, the representative constituents of Cistanche deserticola Y. C. Ma (C. deserticola),are known for its many important biological activities. In this study, a novel ternary natural deepeutectic solvent (NADES) (citric acid, fructose and glucose in a 1:2:1 molar ratio, 30 % water content)was obtained through the adjustment and optimization of single-factor experiments. And through theBox-Behnken design optimization, the optimal extraction conditions were obtained, at the moment,the yields of echinacoside and acteoside were 6.16 and 2.13 mg/g, respectively. In addition, through computermolecular simulation, it was found that there are strong hydrogen bonds and interactions betweenthe molecules of NADES, and the hydrogen bonds, van der Waals forces and p-p interactions played animportant role in the extraction of echinacoside and acteoside from C. deserticola by NADES. Finally, comparedwith the traditional method, NADES ultrasound-assisted extraction of echinacoside and acteosidehas a shorter time (15 min), the maximum extraction yield is 1.54–2.86 times and 1.26–2.52 times thanthat of traditional extraction methods for echinacoside and acteoside, respectively. This study demonstratesthat NADES can provides a new direction for developing new sustainable alternatives, improvinggreen extraction process and efficiency for extracting natural active substances.