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A dual-component strategy for ambiently-cured high-toughness red mud based geopolymer:Modified nano-TiO2 and sodium polyacrylate 认领 引用
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作者 CHEN Jing BAI Bing +2 位作者 NIE Qing-ke BAI Fan ZHANG Hai-qing 《Journal of Central South University》 SCIE EI CAS CSCD 2026年第4期1553-1567,共15页
In response to the growing demand for sustainable construction materials,this study overcomes the inherent brittleness and poor fracture resistance of red mud-based geopolymer(RBG)through the strategic combination of ... In response to the growing demand for sustainable construction materials,this study overcomes the inherent brittleness and poor fracture resistance of red mud-based geopolymer(RBG)through the strategic combination of surface-modified nano-TiO 2(NT)and sodium polyacrylate(SPA).The NT was functionalized with silane coupling agent to improve dispersibility and interfacial bonding,while SPA was added to enhance fracture toughness.Under the condition of ambient curing,the optimum mixture containing 3 wt%(glycidoxypropyltriethoxysilane)-modified NT(GNT)and 0.5 wt%SPA achieved a 28 d compressive strength of 43.40 MPa and a flexural strength of 8.16 MPa.The performance index meets the Portland cement(PC 42.5)standards.Microstructural analyses(XRD,FT-IR and SEM EDS)revealed that the formation of geopolymer gel was increased,the crystallinity was reduced,and the degree of polymerization was improved,which confirmed the effectiveness of this method in producing high-toughness and environmentally friendly geopolymer. 展开更多
关键词 red mud geopolymer modified nano-TiO2 sodium polyacrylate synergistic toughening
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Surface oxygen vacancy trigger peroxymonosulfate activation with cobalt modified montmorillonite for ofloxacin degradation:The synergistic effect of 1O2and Co(Ⅳ)=O 认领 引用
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作者 Xiao-qiang Cao Xingyao Liu +8 位作者 Yaqi Wang Haining Wang Bo Wei Yanan Shang Yizhen Zhang Yujiao Kan Yang Zhang Xing Xu Longlong Zhang 《Chinese Chemical Letters》 SCIE CAS CSCD 2026年第6期816-824,共9页
Oxygen vacancy engineering in heterogeneous catalysts has attracted considerable interest for peroxymonosulfate(PMS)activation.In this study,nano-Co3O4-encapsulated montmorillonite catalysts with tunable oxygen ... Oxygen vacancy engineering in heterogeneous catalysts has attracted considerable interest for peroxymonosulfate(PMS)activation.In this study,nano-Co3O4-encapsulated montmorillonite catalysts with tunable oxygen vacancy(OV)concentrations(denoted as Co3O4−Mt-xOV,x=2,4,6)were synthesized for enhanced PMS activation.These OV defects not only modulate the electronic structure of Co3O4but also strengthen PMS and contaminant adsorption.The optimized Co3O4−Mt-xOV/PMS system exhibited exceptional ofloxacin(OFL)degradation efficiency,achieving 2.74–3.43-fold enhancement over OV-free Co3O4−Mt.Density functional theory calculations and experimental studies revealed that the performance improvement stemmed from OV formation,which synergistically enhanced redox pair cycling,strengthened PMS adsorption,and promoted active species generation during electron transfer.Further studies demonstrated that OV sites selectively drive PMS decomposition to generate high-valent cobalt-oxo species(Co(Ⅳ)=O)and singlet oxygen(1O2)as the dominant reactive species for OFL oxidation.The in-depth investigation into the catalytic mechanism revealed that the Co(Ⅳ)=O species facilitated O2•−generation in surpassing the reaction energy barrier,which subsequently converted to1O2.This non-radical pathway endowed the system with robust anti-interference capability against complex water matrices.The critical role of OV in PMS activation was mechanistically confirmed through experimental and theoretical analyses.Furthermore,Co3O4−Mt-4OV demonstrated outstanding chemical stability and recyclability,highlighting its practical potential.This work provides fundamental insights into vacancy defect engineering for advanced PMS activation and offers strategic guidance for designing high-performance catalysts. 展开更多
关键词 Peroxymonosulfate(PMS) Co3O4 Modified montmorillonite Oxygen vacancy Ofloxacin Singlet oxygen(1O2) High-valent cobalt-oxo species(Co(Ⅳ)=0)
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Integrating Modified National Early Warning Score 2,computed tomography staging,and laboratory markers for enhanced prognostic stratification in emphysematous pyelonephritis 认领 引用
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作者 Cagri Sevik Akif Erbin Halil Lutfi Canat 《World Journal of Nephrology》 2026年第1期274-276,共3页
Emphysematous pyelonephritis(EPN)is a rare but life-threatening urological emergency with no universally accepted management protocol.The Modified National Early Warning Score 2(mNEWS2),derived exclusively from six ph... Emphysematous pyelonephritis(EPN)is a rare but life-threatening urological emergency with no universally accepted management protocol.The Modified National Early Warning Score 2(mNEWS2),derived exclusively from six physiological parameters,has recently been proposed as a reliable tool for predicting treatment outcomes in EPN.Although higher mNEWS2 scores are associated with increased morbidity and mortality,clinical deterioration typically manifests only after substantial disease progression.In contrast,computed tomography-based classification systems and laboratory parameters-such as anemia,leukocytosis,thrombocytopenia,and hyperglycemia-may offer earlier prognostic insights before physiological deterioration occurs.Evidence from recent multicenter studies has identified these factors as independent predictors of mortality.Therefore,integrating mNEWS2 with computed tomography-based staging and relevant laboratory markers may allow more accurate risk stratification and facilitate timely decision-making,including consideration of early nephrectomy in high-risk patients with extensive paranephric involvement,ultimately improving clinical outcomes in EPN management. 展开更多
关键词 Emphysematous pyelonephritis Modified National Early Warning Score 2 Computed tomography classification Prognostic factors Nephrectomy
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Observation on the Therapeutic Effect of Modified Major Bupleurum Decoction in Treating Elderly Patients with Type 2 Diabetes Mellitus Complicated by Constipation 认领 引用
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作者 Yaru Zhou 《Journal of Clinical and Nursing Research》 2026年第3期230-236,共7页
Objective:To observe the clinical effect of modified Major Bupleurum Decoction in treating elderly patients with type 2 diabetes mellitus(T2DM)complicated by constipation,particularly its role in alleviating constipat... Objective:To observe the clinical effect of modified Major Bupleurum Decoction in treating elderly patients with type 2 diabetes mellitus(T2DM)complicated by constipation,particularly its role in alleviating constipation symptoms.Methods:A clinical study was conducted on 60 elderly patients with T2DM complicated by constipation who were hospitalized in the geriatrics department of our hospital from January 2024 to December 2025.The patients were divided into groups based on the order of their visits.The control group(n=30)received Western medicine treatment,while the treatment group(n=30)received a combination of Western medicine and modified Major Bupleurum Decoction.Differences in traditional Chinese medicine(TCM)syndrome scores,constipation scale scores,glycemic and lipid metabolism indicators,treatment efficacy,and the incidence of adverse reactions were compared between the two groups before and after treatment.Results:Compared with the control group,the treatment group showed a significant reduction in TCM syndrome scores and CCS scores after treatment,along with an increase in treatment efficacy,with statistically significant differences(p<0.05).Compared with the control group,the treatment group also demonstrated a significant reduction in glycemic and lipid metabolism indicators after treatment,with statistically significant differences(p<0.05).Conclusion:Modified Major Bupleurum Decoction can actively improve constipation symptoms in elderly patients with T2DM complicated by constipation,with a definite therapeutic effect.Additionally,it exerts a certain auxiliary regulatory effect on the glycemic and lipid metabolism health of patients. 展开更多
关键词 Elderly patients Type 2 diabetes mellitus Functional constipation Modified Major Bupleurum Decoction
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Cerium valence state conversion:Fabrication and environmental remediation of modified CeO2materials 认领 引用 被引量：4
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作者 Jia'ao Han Quansheng Liu +3 位作者 Haitao Xu Yang Wu Shukun Le Chengzhang Zhu 《Journal of Rare Earths》 SCIE EI CAS CSCD 2025年第3期430-440,I0001,共11页
Rare earth elements are highly applicable in photocatalysis due to their partially filled 4f orbitals,existing in electronic structures that facilitate the transfer of electrons during the reaction process.Among these... Rare earth elements are highly applicable in photocatalysis due to their partially filled 4f orbitals,existing in electronic structures that facilitate the transfer of electrons during the reaction process.Among these materials,CeO2has a distinctive external electronic structure(4f15d16s2),abundant oxygen vacancies,and strong conversion ability of Ce4+/Ce3+,which makes it an attractive candidate in the field of photocatalysis.To broaden its practical applications in the visible region,the drawbacks of a wide band gap and a slow Ce4+/Ce3+cycle have been addressed through the modification of CeO2,thereby accelerating light absorption and self-circulation,and enhancing photocatalytic activity.This paper presents a review of the preparation of modified CeO2catalysts and their application in the conversion of cerium valence state in the photocatalytic degradation of pollutants in water.Furthermore,this paper presents a summary of the most recent development and current challenges,as well as prospect for the application of modified CeO2-based materials. 展开更多
关键词 Rare earths Modified CeO2 Ce4+/Ce3+pairs Photoactivity Environmental remediation
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Hypoglycemic mechanism of modified Gegen Qinlian decoction(加味葛根芩连汤)based on regulating the expression and DNA methylation of cholesterol transporters in the adipose tissue of type 2 diabetes mellitus rats 认领 引用
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作者 PENG Shuhong YANG Lingkun +6 位作者 LIU Xinyi ZHANG Mengyu LIN Seqi ZHANG Changhua XU Guoliang ZHU Weifeng YAO Pengcheng 《Journal of Traditional Chinese Medicine》 SCIE CAS CSCD 2025年第6期1254-1262,共9页
OBJECTIVE:To investigate the hypoglycemic mechanism of modified Gegen Qinlian decoction(加味葛根芩连汤,MGQD)by examining its regulation of cholesterol transporter expression and DNA methylation,specifically the low-de... OBJECTIVE:To investigate the hypoglycemic mechanism of modified Gegen Qinlian decoction(加味葛根芩连汤,MGQD)by examining its regulation of cholesterol transporter expression and DNA methylation,specifically the low-density lipoprotein receptor(LDLR)and scavenger receptor class B type 1(SR-B1),in epididymal white adipose tissue(e WAT)and inguinal white adipose tissue(i WAT)of rats with type 2 diabetes mellitus(T2DM).METHODS:The control group(CON)consisted of ten Sprague-Dawley(SD)rats fed a standard chow diet,while 80 SD rats were fed a high-fat diet and administered streptozotocin intraperitoneally to induce diabetes.The diabetic rats were randomly assigned to four groups:T2DM,metformin(MET,200 mg/kg),low-dose MGQD(MGQDL,5 g/kg),and high-dose MGQD(MGQDH,10 g/kg),and received treatment via gavage for 14 weeks.Western blot(WB),quantitative real-time polymerase chain reaction(q PCR),and bisulfite sequencing PCR(BSP)were used to analyze protein levels,m RNA expression,and DNA methylation of Ldlr(gene encoding LDLR)and Srb1(gene encoding SR-B1).RESULTS:MGQD and metformin treatment significantly reduced blood glucose levels,restored LDLR and SR-B1 protein levels in e WAT,and effectively regulated the m RNA expression and non-cytosine-p-guanine(nonCp G)methylation of Srb1 in e WAT.A significant negative correlation was observed between the methylation of Srb1 in e WAT and its m RNA expression.However,MGQD and metformin had no significant effect on the protein levels,m RNA expression,or DNA methylation of Ldlr and Srb1 in i WAT.CONCLUSIONS:MGQD did not significantly affect LDLR and SR-B1 expression or gene methylation in i WAT.However,its hypoglycemic effect may be linked to cholesterol regulation in e WAT.Potential mechanisms include increased LDLR protein levels,which may enhance cholesterol uptake,and increased Srb1 methylation,which may suppress its expression and consequently reduce cholesterol efflux. 展开更多
关键词 diabetes mellitus,type 2 adipose tissue DNA methylation receptors,LDL scavenger receptors,class B cholesterol transporter modified Gegen Qinlian decoction
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Modified National Early Warning Score 2, warning system for predicting treatment outcomes in patients with emphysematous pyelonephritis 认领 引用
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作者 Mohammad S Al-Haggar Zahraa A Abdelmoneim 《World Journal of Nephrology》 2025年第3期202-204,共3页
Emphysematous pyelonephritis(EPN)is a severe,a lethal necrotizing upper urinary tract infection,characterized by gas production within the renal pa-renchyma,collecting system,or perinephric tissue.EPN is emerging as a... Emphysematous pyelonephritis(EPN)is a severe,a lethal necrotizing upper urinary tract infection,characterized by gas production within the renal pa-renchyma,collecting system,or perinephric tissue.EPN is emerging as a sig-nificant concern,necessitating early diagnosis,severity assessment,and timely intervention to improve outcomes.This study proposes a modified National Early Warning Score 2(mNEWS 2)to enhance risk stratification and predictive accuracy in EPN management.The mNEWS 2 refines the original NEWS 2 system,which aggregates 6 physiological indicators(body temperature,systolic blood pressure,pulse rate,oxygen saturation,breathing rate,and degree of consciousness),by incorporating weighted risk stratification indices and specific cutoff values derived from clinical observations,statistical modeling,and predictive per-formance analysis.A pilot study identified optimal thresholds,with a score of 15 maximizing predictive performance for mortality risk and intervention needs,validated through receiver operating characteristic curve analysis.So,the mNEWS 2 score represents a significant advancement in EPN management,offering improved risk stratification and treatment outcomes. 展开更多
关键词 Modified National Early Warning Score 2 Emphysematous pyelonephritis Warning system Pyelonephritis Emphysematous
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Synthesis of Waterborne Polyurethane Modified by Nano-SiO_2 Silicone and Properties of the WPU Coated RDX 认领 引用 被引量：4
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作者 Li Yang Zhao Tianbo +2 位作者 Qu Xiaoling Ding Hongjing Li Fengyan 《China Petroleum Processing & Petrochemical Technology》 CAS 2015年第2期39-45,共7页
A series of nano silica/silicone modified waterborne polyurethane(WPU) have been synthesized from polytetramethylene glycol and isophorone diisocyanate, dihydroxymethyl propionic acid and triethylamine, ethylenediamin... A series of nano silica/silicone modified waterborne polyurethane(WPU) have been synthesized from polytetramethylene glycol and isophorone diisocyanate, dihydroxymethyl propionic acid and triethylamine, ethylenediamine, trimethylolpropane, nano-SiO2 and the silane coupling agent KH550. The effect of the dosage of nano-SiO2 on the WPU-Si membrane and the coated RDX(cyclotrimethylenetrinitramine) particles have been studied in terms of their surface properties, mechanical properties, and thermal stability. The results showed that with the increase of Si content, the stability of the emulsion reduced gradually. The material with more Si content displayed an increased thermodynamic stability, an increased high temperature resistance, an increased tensile strength and a decreased elongation at break. With the increase of Si content, the surface tension of the material decreased, the bibulous rate reduced, and the contact angle increased gradually, so that the surface tension of the polyurethane and RDX are close to each other which could improve the performance of coating. 展开更多
关键词 nano-SiO2 organic silicon waterborne polyurethane coating of RDX
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Preparation of Nano-SiO_2/Amino-modified Polysiloxane Hybrid Superhydrophobic Coating and Thermal-stability Characterization 认领 引用 被引量：3
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作者 李金桦 翁睿 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2014年第1期35-39,共5页
We put forward a large-area and cost-effective method to fabricate superhydrophobic coating by introducing in-situ functionalized nano-SiO2 into side-amino modified hydroxy-terminated polydimethylsiloxane （SA-HTPDMS... We put forward a large-area and cost-effective method to fabricate superhydrophobic coating by introducing in-situ functionalized nano-SiO2 into side-amino modified hydroxy-terminated polydimethylsiloxane （SA-HTPDMS） curing system. With the characterization using water contact angle （WCA） tester, Fourier transform infrared spectroscopy （FTIR）, scanning electron microscope （SEM）, atomic force microscopy （AFM） and simultaneous thermal analysis, the as-prepared coating displayed a tremendous WCA of 154.8±1°, sliding angle （SA） about 3.5° and stable self-cleaning property range from -10 to 80 ℃. It was also found that the synergistic effect of surface micro-nano hierarchical structure and chemical hydrophobicity, stability from matrix had made contributions to the superhydrophobicity and excellent heat resistance up to 300 ℃. 展开更多
关键词 nano-SiO2 amino-modified polysiloxane thermal-stability superhydrophobic
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Synthesis of Modified Epoxy Resin Undercoat for Resistor by Nano-SiO_2 认领 引用 被引量：1
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作者 王秀宇 张之圣 +1 位作者 李海燕 胡明 《Transactions of Tianjin University》 EI CAS 2006年第3期193-198,共6页
A kind of undercoat for resistor with high temperature and humidity resistance was obtained by modifying epoxy resin with proper nano-SiO2 added at 80℃. The structure, thermal stability, humidity resistance, and morp... A kind of undercoat for resistor with high temperature and humidity resistance was obtained by modifying epoxy resin with proper nano-SiO2 added at 80℃. The structure, thermal stability, humidity resistance, and morphological characteristics of the modified epoxy resin undercoat were studied by electrical tests, infrared spectra （IR） analysis, and scanning electron microscopy （SEM）. The results show that more compact and steady inter-crosslinked network structures are formed in the modified epoxy resin undercoat added with nano-SiO2, which greatly improves the performance of modified epoxy resin undercoat. The undercoat with nano-SiO2 of about 2. 71%, kept for six months at room temperature without flocculating and aggregating, is of good stability, and the surface of painted resistor is uniform, tight and without air holes on it. The varying ratio of resistance with such undercoat painted is less than one in a thousand after high temperature and humidity resistance tests. 展开更多
关键词 epoxy resin nano-SiO2 undercoat high temperature and humidity resistance
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Novel Method of Hyperbranched Polymer Modified Nano-SiO_2-Grafting Hyperbranched Poly(amide-ester) from Nano-SiO_2 by One-Step Polycondensation 认领 引用
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作者 赵辉 李杰 +1 位作者 孙瑞敏 罗运军 《Journal of Beijing Institute of Technology》 EI CAS 2008年第1期100-103,共4页
A new method of surface chemical modification of nano-SiO2 is proposed in this paper. In the presence of catalyst, the active hydroxyl groups on the surface of nano-SiO2 reacted with AB2-type monomer （N, N-dihydroxye... A new method of surface chemical modification of nano-SiO2 is proposed in this paper. In the presence of catalyst, the active hydroxyl groups on the surface of nano-SiO2 reacted with AB2-type monomer （N, N-dihydroxyethyl-3-amino methyl propionate） by one-step polycondensation. And the product＇s Fourer transform infrared （FTIR） graphs and transmission electron microscopy（TEM） images proved that hyperbranched poly （amine-ester） was grafted on nano-SiO2 surface successfully. Results show that the modified nano-SiO2 exhibits excellent dispersion and stability in some solvents such as alcohol and chloroform. 展开更多
关键词 nano-SiO2 hyperbranched poly （amide-ester） one-step polycondensation dispersion and stability
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Joining of SiO2 ceramic and TC4 alloy by nanoparticles modified brazing filler metal 认领 引用 被引量：17
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作者 Hong BIAN Yanyu SONG +3 位作者 Duo LIU Yuzhen LEI Xiaoguo SONG Jian CAO 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2020年第1期383-390,共8页
Nano-Al2O3 particles modified Ag Cu Ni filler was adopted to braze the SiO2 ceramic and TC4.The effects of filler size as well as the brazing temperature on the interfacial microstructure and mechanical property of th... Nano-Al2O3 particles modified Ag Cu Ni filler was adopted to braze the SiO2 ceramic and TC4.The effects of filler size as well as the brazing temperature on the interfacial microstructure and mechanical property of the joints were investigated.Nanoscale filler reduced the phases dimension and promoted the homogeneous distribution of microstructure,obtaining a higher joint strength when compared to microscale filler.The increase of brazing temperature made the accelerating dissolution and diffusion of Ti,which promoted the increase of thickness of Ti4O7+TiSi2 layer adjacent to SiO2 ceramic and diffusion layer zone nearby TC4 alloy.The hypoeutectic structure was produced in the brazing seam due to the high Ti content.The maximum shear strength of^40 MPa was obtained at 950°C for 10 min. 展开更多
关键词 Brazing Microstructure Nanoparticles modified filler SiO2 ceramic TC4
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Simultaneous removal and oxidation of arsenic from water byδ-MnO 2 modified activated carbon 认领 引用 被引量：11
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作者 Yulong Wang Hupeng Liu +3 位作者 Shaofeng Wang Xuhui Li Xin Wang Yongfeng Jia 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2020年第8期147-160,共14页
The ubiquitous arsenic in groundwater poses a great risk to human health due to its environmental toxicity and carcinogenicity.In the present work,a new adsorbent,δ-MnO2 modified activated carbon,was prepared,and its... The ubiquitous arsenic in groundwater poses a great risk to human health due to its environmental toxicity and carcinogenicity.In the present work,a new adsorbent,δ-MnO2 modified activated carbon,was prepared,and its performance for the uptake of arsenate and arsenite species from aqueous solutions was investigated by batch experiments.Various techniques,including FESEM-EDX,p-XRD,XPS and BET surface area analysis,were employed to characterize the properties of the adsorbent and the arsenic adsorption mechanisms.The results showed thatδ-MnO2 covered on the surface and padded in the pores of the activated carbon.Adsorption kinetic studies revealed that approximately 90.1%and 76.8%of As(Ⅲ)and As(V),respectively,were removed by the adsorbent in the first 9 hr,and adsorption achieved equilibrium within 48 hr.The maximum adsorption capacities of As(V)and As(Ⅲ)at pH 4.0 calculated from Langmuir adsorption isotherms were 13.30 and 12.56 mg/g,respectively.The effect of pH on As(Ⅴ)and As(Ⅲ)removal was similar,and the removal efficiency significantly reduced with the increase of solution pH.Arsenite oxidation and adsorption kinetics showed that the As(Ⅴ)concentration in solution due to As(Ⅲ)oxidation and reductive dissolution of MnO2 increased rapidly during the first 12 min,and then gradually decreased.Based on the XPS analysis,nearly 93.3%of As(Ⅲ)had been oxidized to As(V)on the adsorbent surface and around 38.9%of Mn(Ⅳ)had been reduced to Mn(Ⅱ)after As(Ⅲ)adsorption.This approach provides a possible method for the purification of arsenic-contaminated groundwater. 展开更多
关键词 δ-MnO 2 modified activated carbon Arsenate Arsenite Adsorption Oxidation
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Effects of the Modified Linggui Zhugan Decoction(加味苓桂术甘汤) Combined with Short-term Very Low Calorie Diets on Glycemic Control in Newly Diagnosed Type 2 Diabetics 认领 引用 被引量：18
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作者 陈丁生 柯斌 +5 位作者 黄颖娟 孟君 张俊杰 陈泽雄 MICHALSEN Andreas 秦鉴 《Journal of Traditional Chinese Medicine》 SCIE CSCD 2011年第3期185-188,共4页
Objective:To evaluate the effects of the modified Linggui Zhugan Decoction(加味苓桂术甘汤) combined with short-term very low calorie diets(VLCDs) on glycemic control in newly diagnosed type 2 diabetes mellitus(T2DM) p... Objective:To evaluate the effects of the modified Linggui Zhugan Decoction(加味苓桂术甘汤) combined with short-term very low calorie diets(VLCDs) on glycemic control in newly diagnosed type 2 diabetes mellitus(T2DM) patients.Methods:A total of 20 subjects with newly diagnosed T2DM were treated with the modified Linggui Zhugan Decoction(one-month administration) combined with short-term VLCDs(5 days),and 3-months follow-up.A standard 75-g oral-glucose-tolerance test(OGTT) indexes fasting plasma glucose(FPG),post-prandial 0.5 h and 2 h plasma glucose(P0.5hPG,P2hPG),glycated hemoglobin A1C(GHbA1C),body weight,body mass index(BMI),insulin function,insulin resistance index,incidence of hypoglycemia,and the liver and renal functions were evaluated before and after treatment.Correlations of BMI with insulin function and insulin resistance were also assessed.Results:After the treatment,the patients' plasma glucose decreased steadily,FPG decreased from 5.8±0.9 mmol/L at pre-treatment to 5.0±0.6 mmol/L at 3-months follow-up(P<0.05),and P2hPG decreased from 11.7±3.8 mmol/L at pre-treatment to 6.9±0.9 mmol/L at 3-months follow-up(P<0.01).The level of GHbA1C declined from(6.47±1.24)% at pre-treatment to(6.14±0.99)% at 3-months follow-up(P<0.01).Body weight and BMI also declined significantly.Insulin resistance index was improved obviously and no event of hypoglycemia occurred.Part of the patients companied with fatty liver had a transient increase in hepatic transaminase during the treatment,but it turned to normal after the treatment.Conclusions:The modified Linggui Zhugan Decoction combined with short-term VLCDs can be safely implemented for steady glycemic control in newly diagnosed T2DM patients. 展开更多
关键词 Modified Linggui Zhugan Decoction Very Low Calorie Diets Type 2 diabetes Plasma glucose
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Recovery of iron from copper slag via modified roasting in CO-CO2 mixed gas and magnetic separation 认领 引用 被引量：9
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作者 Ping-guo Jiang Jin-sheng Liu +2 位作者 Yi-yu Xiao Xiao-heng Tan Wen-jie Liu 《Journal of Iron and Steel Research International》 SCIE EI CAS CSCD 2020年第7期796-806,共11页
A novel technology,modified roasting in CO-CO2 mixed gas and magnetic separation,was presented to recover iron from copper slag.The effects of various parameters such as dosage of flux(CaO),gas flowrate of CO and CO2,... A novel technology,modified roasting in CO-CO2 mixed gas and magnetic separation,was presented to recover iron from copper slag.The effects of various parameters such as dosage of flux(CaO),gas flowrate of CO and CO2,roasting temperature,roasting time,particle size of modified slag and magnetic flux density on the oxidized modification and magnetic separation were investigated by comparison of the X-ray diffraction patterns and iron recovery ratio.The optimum conditions for recovering iron by oxidizing roasting and magnetic separation are as follows:calcium oxide content of 25 wt.%,mixed gas flow rates of CO2 and CO of 180 and 20 mL/min,oxidizing roasting at 1323 K for 2 h,grinding the modified slag to 38.5-25.0μm and magnetic separation at 170 mT.The mineralogical and microstructural characteristics of modified slag revealed that the iron-bearing minerals in the copper slag were oxidized,the generated magnetite grew into large particles,and the silicate in copper slag was combined with calcium oxide to form calcium silicate.Finally,the iron-bearing concentrate with an iron grade of 54.79%and iron recovery ratio of 80.14%was effectively obtained. 展开更多
关键词 Copper slag CO-CO2 mixed gas Modified roasting Magnetic separation Iron recovery ratio
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Preparation and photocatalytic activity of laponite pillared by CeO_2 modified TiO_2 认领 引用 被引量：6
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作者 林英光 皮丕辉 +2 位作者 郑大锋 杨卓如 王炼石 《Journal of Rare Earths》 SCIE EI CAS 2010年第5期732-736,共5页
The laponite pillared by the CeO2 modified TiO2 (Ce-Ti-lap) were prepared by microwave intercalation reaction with laponite as the layered clay, tetrabutyl titanate and cerium chloride as the Ce-Ti composite pillaring... The laponite pillared by the CeO2 modified TiO2 (Ce-Ti-lap) were prepared by microwave intercalation reaction with laponite as the layered clay, tetrabutyl titanate and cerium chloride as the Ce-Ti composite pillaring agent, and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and Brumauer-Emmett-Teller (BET) surface area. The photocatalytic activities of Ce-Ti-lap were investigated by the degradation of methyl orange (MO). The results showed that Ce and Ti could be introduced to... 展开更多
关键词 CeO2 modified TiO2 pillared laponite photocatalytic activity microwave intercalation reaction rare earths
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Preparation of the Ag_2O_2-PbO_2 Modified Electrode and Its Application towards Escherichia coli Fast Counting in Water 认领 引用 被引量：4
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作者 JingGU WenZHANG +3 位作者 YuFengYANG LeiZHENG ZiRongWU LiTongJIN 《Chinese Chemical Letters》 SCIE CAS 2005年第5期635-638,共4页
A novel nano crystalline Ag2O2-PbO2 film chemically modified electrode (CME) was prepared and the CME was characterized by X-ray diffractometer (XRD) and atomic force microscope (AFM). By chronoamperometry, the nano A... A novel nano crystalline Ag2O2-PbO2 film chemically modified electrode (CME) was prepared and the CME was characterized by X-ray diffractometer (XRD) and atomic force microscope (AFM). By chronoamperometry, the nano Ag2O2-PbO2 CME was used as bioelectro- chemical sensor to determine the population of Escherichia coli (E. coli) in water. Compared with conventional methods, it is found that the technique we used is fast and convenient in counting E. coli. 展开更多
关键词 Ag2O2-PbO2 modified platinum electrode Escherichia coli fast counting.
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CO2 capture by double metal modified CaO-based sorbents from pyrolysis gases 认领 引用 被引量：4
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作者 Xiaobin Chen Yuting Tang +3 位作者 Chuncheng Ke Chaoyue Zhang Sichun Ding Xiaoqian Ma 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2022年第3期40-49,共10页
High-temperature pyrolysis technology can effectively solve the problem of municipal solid waste pollution.However,the pyrolysis gas contains a large amount of CO2,which would adversely affect the subsequent utiliz... High-temperature pyrolysis technology can effectively solve the problem of municipal solid waste pollution.However,the pyrolysis gas contains a large amount of CO2,which would adversely affect the subsequent utilization.To address this problem,a novel method of co-precipitation modification with Ca,Mg and Zr metals was proposed to improve the CO2capture performance.X-ray diffraction(XRD)patterns and energy dispersive X-ray spectroscopy analysis showed that the two inert supports MgO and CaZrO3were uniformly distributed in the modified calcium-based sorbents.In addition,the XRD results indicated that CaZrO3was produced by the reaction of ZrO2and CaO at high temperatures.The effects of doping ratios,adsorption temperature,calcination temperature,CO2concentration and calcination atmosphere on the adsorption capacity and cycle stability of the modified calcium-based sorbent were studied.The modified calcium-based sorbent achieved the best CO2capture performance when the doping ratio was 10:1:1 with carbonation at 700℃ under 20%CO2/80%N2atmosphere and calcination at 900℃ under100%N2atmosphere.After ten cycles,the average carbonation conversion rate of Ca-10 sorbent was 72%.Finally,the modified calcium-based sorbents successfully reduced the CO2concentration of the pyrolysis gas from 37%to 5%. 展开更多
关键词 Pyrolysis gas CO2capture Co-precipitation CaO-based sorbents Modified sorbents
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Effects of precursor moisture and inert N_2 atmosphere calcinations on structure and properties of alumina modified CeZrLaNd mixed oxides 认领 引用 被引量：3
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作者 Meisheng Cui Zhizhe Zhai +3 位作者 Hao Wang Yongke Hou Yongqi Zhang Xiaowei Huang 《Journal of Rare Earths》 SCIE EI CAS CSCD 2019年第6期609-616,共8页
CeO_2-ZrO_2 mixed oxides are widely used in the three-way catalysts due to their unique reversible oxygen storage and release capacity. Large surface area, high oxygen storage capacity and good thermal stability of ce... CeO_2-ZrO_2 mixed oxides are widely used in the three-way catalysts due to their unique reversible oxygen storage and release capacity. Large surface area, high oxygen storage capacity and good thermal stability of cerium zirconium mixed oxides are the key properties for the automotive catalysts so as to meet the strict emission regulations. In this work, alumina modified CeZrLaNd mixed oxides were prepared by a co-precipitation method. The effects of moisture in precursor and inert N2 atmosphere during calcinations on the structure and properties were investigated by Brunauer-Emmett-Teller(BET) surface area measurements, X-ray diffraction(XRD), scanning electron microscopy(SEM), transmission electron microscopy(TEM), hydrogen temperature-programmed reduction(H_2-TPR), oxygen storage capacity(OSC), Raman spectroscopy, and X-ray photoelectron spectroscopy(XPS). The results show that the moisture in precursor during calcinations increases the crystal grain size of the cerium zirconium mixed oxides, improving the thermal stability. And the aged surface area of sample after being calcined at1000 ℃ for 4 h reaches 68.8 m^2/g(5.7% increase compared with the common sample). The inert N2 atmosphere endows a great pore-enlarging effect, which leads to high fresh surface area of 148.9 m2/g(13.5% increase compared with the common sample) and big pore volume of 0.5705 mL/g. The redox and oxygen storage capacity are also improved by inert N2 atmosphere with high OSC value of 241.06μmolO_2/g(41.3% increase compared with the common calcination), due to the abundant formation of the crystal defects and oxygen vacancies. 展开更多
关键词 Precursor moisture Inert N2 atmosphere Calcinations Alumina modified CeZrLaNd mixed oxides Rare earths
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Physicochemical properties of a novel composite polymer electrolyte doped with vinyltrimethoxylsilane-modified nano-La_2O_3 认领 引用 被引量：3
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作者 肖围 李新海 +4 位作者 王志兴 郭华军 王接喜 黄思林 甘雷 《Journal of Rare Earths》 SCIE EI CAS CSCD 2012年第10期1034-1040,共7页
Nano-La2O3 was modified with the vinyltrimethoxylsilane by hydrolysis and a novel poly （vinylidene fluoride-co-hexafluoropropylene） （PVDF-HFP） based composite polymer electrolyte doped with the modified nano-La2O3... Nano-La2O3 was modified with the vinyltrimethoxylsilane by hydrolysis and a novel poly （vinylidene fluoride-co-hexafluoropropylene） （PVDF-HFP） based composite polymer electrolyte doped with the modified nano-La2O3 was prepared by phase inversion method. The physicochemical properties were studied by SEM, FT-IR, XRD, TG and electrochemical methods. The results of FT-IR indicated that the nano-La2O3 was successfully modified with vinyltrimethoxylsilane. The XRD analysis showed that the incorporation of modified nano-La2O3 into the polymer electrolyte membranes could effectively reduce the crystallinity of PVDF-HFP, and the characterizations also suggested that thermal stability and electrochemical stability window could reach to 382°C and 5.1V, respectively; the reciprocal temperature dependence of ionic conductivity followed Vogel-Tamman-Fulcher （VTF） relation, ionic conductivity at room temperature was up to 3.5×10-3S/cm and lithium ions transference number was up to 0.42; the interfacial resistance increased at initial value about353Ω/cm2 and reached a steady value about 559Ω/cm2 after 5d storage at 30°C. The fabricated Li/As-prepared electrolytes/LiCoO2 coin cell showed excellent rate and cycle performances. 展开更多
关键词 composite polymer electrolyte vinyltrimethoxylsilane modify nano-La2O3 rare earths
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