Removal of Acid Red G dye from aqueous solutions by adsorption to MCM-41-layered double hydroxides composite

Yisong Wang,Tao Du,Lifeng Zhou,Yanli Song,Shuai Che,Xin Fang 한국화학공학회 2018 Korean Journal of Chemical Engineering Vol.35 No.3

MCM-41 supported layered double hydroxides (LDH) composite materials (ML) were synthesized and studied for removal of Acid Red G (ARG), an anionic dye, with the adsorption method. ML was prepared using in situ synthesis procedure for the low supersaturation coprecipitation method, and ML10 and ML20 presented promising application towards ARG dye adsorption capacity in industrial wastewater. Powder samples were characterized by Xray diffraction, FTIR spectroscopy, scanning electron microscopy and energy dispersive spectrometry. The effects of different reaction time, initial solution pH and temperature on the dye adsorption capacity were investigated. Adsorption process was well described by pseudo-second-order kinetic model and Langmuir isotherm model. The fitting curves showed that ML10 and ML20 had higher adsorption rates and maintained a certain theoretical saturated adsorption capacity (92.19807mg/g and 96.41947mg/g, respectively) compared with LDH.

Laparoscopic Sacrocolpopexy Plus Colporrhaphy With an Small Intestine Submucosa Graft Versus Total Pelvic Floor Reconstruction for Advanced Prolapse: A Retrospective Cohort Study

Junyan Wang,Xiaojuan Wang,Keqin Hua,Yisong Chen 대한배뇨장애요실금학회 2019 International Neurourology Journal Vol.23 No.2

Purpose: Transvaginal mesh (TVM) results in a greater anatomic cure but more complications. We aimed to compare laparoscopic sacrocolpopexy (LSC) plus colporrhaphy with the small intestine submucosa (SIS) graft versus TVM for advanced pelvic organ prolapse (POP). Methods: Patients with advanced POP who underwent LSC plus colporrhaphy with the SIS graft or TVM at a center between September 2015 and November 2016 were studied. Anatomical outcomes were evaluated using POP quantification. Functional outcomes related to POP and sexual life were evaluated using the Pelvic Floor Distress Inventory (PFDI-20) and the Pelvic Organ Prolapse/Urinary Incontinence Sexual Function Questionnaire (PISQ-12). Data regarding surgical procedures and patient demographic variables were recorded. Chi-square and Student t -tests were used for 2 independent samples. Results: A total of 76 patients were enrolled in this study with 26 patients in the LSC plus colporrhaphy with the SIS graft group (group A) and 50 patients with TVM group (group B). All patients in both groups demonstrated significant improvement in anatomical outcomes (P<0.05) after surgery. PFDI-20 scores were significantly improved 12 months after operation in both groups (P<0.001). PISQ-12 scores were significantly improved in patients after surgery, especially patients in group A (P<0.001). Mesh exposure occurred in both groups as follows: 8 patients (30.7%) in group A and 5 patients (10%) in group B. Conclusions: Even though both surgeries showed excellent results for subjective and objective outcomes, the use of an SIS graft might increase the exposure of polypropylene mesh. We do not recommend LSC plus colporrhaphy with the SIS graft for advanced multiple-compartments prolapse.

Research on the design of shooting shoes for air rifle athletes in standing position

Yisong Li,Jingyi Hu,Yao-Hua Wang 한국디자인학회 2022 한국디자인학회 학술발표대회 논문집 Vol.2022 No.11

CRASHWORTHINESS OPTIMIZATION OF TAPERED UD-CFRP TUBE ACCOUNTING FOR MULTIPLE LOADING PANGLES

Chen Yisong,Zhu Guohua,Wang Zhen 한국자동차공학회 2023 International journal of automotive technology Vol.24 No.4

Tapered composite energy-absorbing components have superior advantages in weight reduction and crashworthiness improvement subjected to oblique compressions compared to straight structures. This study investigated the crashworthiness characteristics of uni-directional carbon fiber reinforced plastic (UD-CFRP) tubes under various loading angles, and further provided the guidance on multi-objectives optimization for UD-CFRP tubes accounting for multiple loading cases. The crashworthiness characteristics of straight UD-CFRP tubes subjected to three compressive angles (0°, 10° and 20°) were firstly explored experimentally, and results indicated that energy-absorbing capacity of samples decreased with the loading angles increasing due to changes in deformation behaviors. The multi-layer finite element modes (FEMs) were developed and validated, and simulations found that internal energy (IE) of intra-CFRP layer and inter-cohesive layer, friction energy decreased with the increase in loading angles. Parametric studies indicated crashworthy performances of UD-CFRP samples under multiple loading angles can be further improved by adjusting the tapered angle or wall thickness. Consequently, the synthetic special energy absorption (SEAβ), synthetic peak crushing force (PCFβ) and mass of tapered tube were optimized accounting for three different loading groups. Compared to baseline sample, the SEAβ was improved by 14 %, while the PCFβ and mass were reduced by 30.2 % and 19 %, respectively.

Study on Two-Phase Flow with High Accuracy Phase- Field Spectral Element Model

Yao Xiao,Liangqi Zhang,Xiaoshuang Wang,Hao Li,Yisong Jin,Yong Liu,Zhong Zeng 한국전산유체공학회 2022 한국전산유체공학회 학술대회논문집 Vol.2022 No.10

An integrated porous Ni3S2 electrode assisted by copper with advanced performance for sodium storage

Li-Feng Zhou,He Gong,Yisong Wang,He Jia,Li-Ying Liu,Tao Du 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.111 No.-

Sodium ion battery has been rapidly consolidating its status of the dominant power supplier for largescaleenergy storage systems as a candidate of lithium ion battery and has gotten widely attention. In thiswork, an integrated porous Ni3S2 electrode assisted by copper using for sodium storage showed anadvanced electrochemical performance and long life-span. Coupled with Cu particles planted on the surfaceof Ni foam, electron transfer can be fast induced, thus avoiding the electrode damage due to collectionelectron. It further achieved a superior retention of 88.7 % with the capacity of 417 mAh g1. In thekinetics analysis, the capacitance-controlled capacity in the electrochemical process dominated, and thefast calculated Na+ diffusion coefficients was 4 10-10 cm2 s1. Therefore, it deserves attention and furtherresearch for the commercial application of large-scale energy storage.

Tetragonal zirconia based ternary ZnO-ZrO2-MOx solid solution catalysts for highly selective conversion of CO2 to methanol at High reaction temperature

Xin Fang,Yunting Xi,He Jia,Chuang Chen,Yisong Wang,Yanli Song,Tao Du 한국공업화학회 2020 Journal of Industrial and Engineering Chemistry Vol.88 No.-

Catalytic conversion of CO2 to methanol has attracted increasing interests as a promising strategy forreducing excessive CO2 emissions. However, the methanol selectivity drops rapidly with elevatedtemperature due to enhanced CO synthesis using conventional catalysts, which hiders its application. Herein, ZnO-ZrO2 solid solution catalysts (SSCs) were prepared with different methods and modified byadding extra metal, i.e., Al, Cr, Fe or Mg. As-prepared SSCs were characterized and tested in reaction. Theresults show that prepared ZnO-ZrO2 SSCs possess similar chemical compositions but different crystals,morphologies and pore systems, among which the C-ZZ synthesized by co-precipitation exhibits theoptimal property. After doping, the basic crystal of tetragonal ZrO2 can be retained and ternary ZnO-ZrO2-MOx SSCs are successfully prepared. There come dramatic improvements in overall catalyticperformance. Specifically, the 3Mg-C-ZZ SSC, at 3.0 MPa and GHSV of~2000 h 1, maintains a considerablemethanol selectivity of 81.5 % even at 320 C. Prepared catalysts present remarkable superiorities toconventional copper-based catalysts especially at high reaction temperatures, which endures thempromising applications in coupling conversion of CO2 to valuable chemicals with the intermedia ofmethanol.

High cripto-1 and low miR-205 expression levels as prognostic markers in early stage non-small cell lung cancer

Park, Kang-Seo,Moon, Yong Wha,Raffeld, Mark,Lee, Dae Ho,Wang, Yisong,Giaccone, Giuseppe Elsevier 2018 Lung cancer Vol.116 No.-

<P><B>Abstract</B></P> <P><B>Objectives</B></P> <P>Cripto-1 (CR-1) plays a critical role in the activation of SMAD, SRC, and epithelial-to-mesenchymal transition (EMT) pathways and has been shown to be prognostic in several cancer types. In addition, we showed that CR-1 renders EGFR-mutated NSCLC cells resistant to EGFR-TKI through the activation of SRC and EMT via miR-205 downregulation. This study aimed to investigate the correlation between expression of CR-1 and miR-205 and prognosis of NSCLC patients with or without EGFR mutations.</P> <P><B>Materials and methods</B></P> <P>A total of 265 patients with stage I (AJCC 6th edition) radically resected NSCLC were tested for CR-1 expression and EGFR mutations by immunohistochemistry and miR-205 expression via qPCR assay.</P> <P><B>Results</B></P> <P>CR-1 expression was evaluated with immunohistochemistry using a tissue microarray on 265 T1-2N0 surgical NSCLC samples. Of the 265 tumors, 250 (94%) expressed various levels of CR-1. A significant inverse correlation was identified between expression of miR-205 and CR-1. NSCLC patients (T1N0, n = 106) with high CR-1 expression had worse prognosis (shorter recurrence-free survival, p = .045) than those with low CR-1 expression. A similar trend was observed in NSCLC patients with normal preoperative carcinoembryonic antigen (CEA) levels (serum CEA levels <5 ng/ml; n = 179; p = .085); however, no significant correlation was found between CR-1 expression and survival rate in the T2N0 or high CEA groups. In addition, NSCLC patients with low miR-205 expression (n = 126) had poorer prognosis in terms of recurrence than those with high miR-205 expression (n = 127; p = .001).</P> <P><B>Conclusion</B></P> <P>High CR-1 expression is correlated with poor prognosis in NSCLC with low tumor burden and may be used to select high-risk patients for adjuvant chemotherapy in early NSCLC. Moreover, low miR-205 expression likely related to high CR-1 expression could be a prognostic marker for patients with NSCLC.</P> <P><B>Highlights</B></P> <P> <UL> <LI> We evaluated Cripto-1 and miR-205 expression by IHC and qPCR, respectively, in 265 resected NSCLC. </LI> <LI> We demonstrated that high cripto-1 expression correlates with poor prognosis in early NSCLC. </LI> <LI> Low miR-205 reduced by Cripto-1 expression is associated with poor prognosis in NSCLC patients. </LI> </UL> </P>

Progress in Adsorption-Enhanced Hydrogenation of CO2 on Layered Double Hydroxide (LDH) Derived Catalysts

Xin Fang,Chuang Chen,He Jia,Yingnan Li,Jian Liu,Yisong Wang,Yanli Song,Tao Du,Liying Liu 한국공업화학회 2021 Journal of Industrial and Engineering Chemistry Vol.95 No.-

It is acknowledged as a promising strategy to reduce excessive CO2 emissions by catalytic conversion tovalue-added chemicals, in which layered double hydroxide (LDH) derived catalysts play essential roles. Inthe present review, latest progresses were summarized to gain insights on this issue. LDH-derivedcatalysts can be prepared via various methods and possess favorable characteristics of reversibletopotactic transformation for further development. Compared to conventional catalysts, they showspecific advantages in specific surface area, metal element dispersion and active site distribution. Despiteof distinguished LDH-derived catalysts applied in CO2 reduction reactions to methane, methanol,hydrocarbons, etc., state-of-art LDH-derived catalysts consisted of catalyst-adsorbent synergistic systemare recently constructed to employ the surface CO2 adsorption boundary layer to increase the CO2 partialpressure near active sites for hydrogenation. The overall catalytic performance is thus promoteddramatically. Accordingly, the strategy of adsorption-enhanced hydrogenation is expected to facilitatethe industrialization of CO2 hydrogenation and is instructive for catalyst design in future.

Conductively coupled flexible silicon electronic systems for chronic neural electrophysiology

Li, Jinghua,Song, Enming,Chiang, Chia-Han,Yu, Ki Jun,Koo, Jahyun,Du, Haina,Zhong, Yishan,Hill, Mackenna,Wang, Charles,Zhang, Jize,Chen, Yisong,Tian, Limei,Zhong, Yiding,Fang, Guanhua,Viventi, Jonathan National Academy of Sciences 2018 PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF Vol.115 No.41

<P>Materials and structures that enable long-term, intimate coupling of flexible electronic devices to biological systems are critically important to the development of advanced biomedical implants for biological research and for clinical medicine. By comparison with simple interfaces based on arrays of passive electrodes, the active electronics in such systems provide powerful and sometimes essential levels of functionality; they also demand long-lived, perfect biofluid barriers to prevent corrosive degradation of the active materials and electrical damage to the adjacent tissues. Recent reports describe strategies that enable relevant capabilities in flexible electronic systems, but only for capacitively coupled interfaces. Here, we introduce schemes that exploit patterns of highly doped silicon nanomembranes chemically bonded to thin, thermally grown layers of SiO2 as leakage-free, chronically stable, conductively coupled interfaces. The results can naturally support high-performance, flexible silicon electronic systems capable of amplified sensing and active matrix multiplexing in biopotential recording and in stimulation via Faradaic charge injection. Systematic in vitro studies highlight key considerations in the materials science and the electrical designs for high-fidelity, chronic operation. The results provide a versatile route to biointegrated forms of flexible electronics that can incorporate the most advanced silicon device technologies with broad applications in electrical interfaces to the brain and to other organ systems.</P>