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Improvement of the activity and SO_(2) tolerance of Sb-modified Mn/PG catalysts for NH_(3)-SCR at a low temperature

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Journal of Environmental Sciences 2021年第3期33卷 1-15页

作者： Xianlong Zhang Shuangshuang Lv Xincheng Zhang Kesong Xiao xueping wu School of Chemistry and Chemical Engineering Hefei University of TechnologyHefei 230009China Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering Hefei University of TechnologyHefei 230009China Instrumental Analysis Center Hefei University of TechnologyHefei 230009China

A series of MnM/palygorskite(PG)(M=La,W,Mo,Sb,Mg)catalysts was prepared by the wetness co-impregnation method for low-temperature selective catalytic reduction(SCR)of NO with NH_*** efficiency followed the order Sb>Mo>La>W>Mg.A combination of various physico-chemical techniques was used to investigate the influence of Sb-modified Mn/PG ***_(0.156)/PG catalyst showed highest NO conversion at low temperatures in the presence of SO_(2) which reveals that addition of Sb oxides effectively enhances the SCR activity of catalysts.A SO_(2) step-wise study showed that MnSb_(0.156)/PG catalyst displays higher durable resistance to SO_(2) than Mn/PG catalyst,where the sulfating of active phase is greatly inhibited after Sb *** electron microscopy and X-ray diffraction results showed that Sb loading enhances the dispersion of Mn oxides on the carrier *** to the results of characterization analyses,it is suggested that the main reason for the deactivation of Mn/PG is the formation of manganese sulfates which cause the permanent deactivation of Mn-based *** Sb-doped Mn/PG catalyst,SO_(x) ad-species formed were mainly combined with SbO_(x) rather than MnO_(x).This preferential interaction between SbO_(x) and SO_(2) effectively shields the MnO_(x) as active species from being sulfated by SO_(2) resulting in the improvement of SO_(2) tolerance on Sb-added *** information support that,owing to the addition of Sb,original formed MnO_(x) crystallite has been completely transformed into highly dispersed amorphous phase accounting for higher SCR activity.

关键词： Manganese oxides Antimony oxides Low-temperature SCR Metal sulfates Sponge-like structure

Overweight, obesity, and screen-time viewing among Chinese school-aged children: National prevalence estimates from the 2016 Physical Activity and Fitness in China—The Youth Study

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Journal of Sport and Health Science 2017年第4期6卷 404-409页

作者： Yujun Cai Xihe Zhu xueping wu School of Physical Education and Sport Training Shanghai University of Sport Department of Human Movement Sciences Old Dominion University

Purpose: This study presents the most recent estimates of prevalence of overweight, obesity, and screen-time viewing among Chinese school-aged children. Demographic differences in these estimates between sexes and resident locales were also ***: Cross-sectional analyses of 116,615 Chinese school children 9 to 17 years of age who participated in the 2016 Physical Activity and Fitness in China—The Youth Study project. Outcomes were the prevalence of children's overweight(85 th ≤ body mass index(BMI) < 95 th percentile) and obesity(BMI ≥95 th percentile)(defined by the Working Group on Obesity in China) and not meeting screen-time viewing recommendations("not meeting" was defined as more than 2 h per day of viewing activities after school). Analyses were conducted on the whole sample and by school grade cohorts(primary, junior middle, and junior high schools), sex, and residence locales(urban, rural).Results: Overall, 14.4%(95% confidence interval(CI): 13.8%–15.0%) of children and adolescents were overweight, 11.9%(95%CI: 11.0%–13.0%) were obese, and 36.8%(95%CI: 34.7%–38.9%) did not meet screen-time viewing recommendations. Across the 3-grade cohorts, boys were more likely to be obese than girls, and primary and junior middle school children living in urban areas were more likely to be obese than those living in rural areas. Primary and junior middle school boys were less likely to meet screen-time recommendations than girls, and junior high school children living in urban areas were less likely to meet screen-time recommendations than school children of the same grades living in rural ***: In 2016, the prevalence of obesity among Chinese school children was about 12%, and about 37% of them did not meet screen-time viewing recommendations. The prevalence of obesity and sedentary behavior was generally higher among boys than among girls, and it was higher for children living in urban areas than for those living in rural areas.

关键词： Physical inactivity Sedentary behavior Unhealthy lifestyle Weight status

Effect of conventional medical treatment plus Qigong exercise on type 2 diabetes mellitus in Chinese patients： A Meta-analysis

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Journal of Traditional Chinese Medicine 2018年第2期38卷 167-174页

作者： Yang Hongchang wu xueping Wang Min Physical Education Department Hohai University Nanjing 210098 China Shanghai Key Lab of Human Performance Shanghai University of Sport Shanghai 200438 China School of Physical Education and Coaching Shanghai University of Sport Shanghai 200438 China Scientific Research Department Academy of Science Shanghai University of Sport Shanghai 200438 China School of Kinesiology Shanghai University of Sport Shanghai 200438 China Physical Education Department Shanghai Unversity of Finance and Economics Shanghai 200433 China

OBJECTIVE: To systematically evaluate the effect of conventional medical treatment plus Qigong exercise on type 2 diabetes mellitus(T2 DM) in Chinese ***: A literature search was conducted in Pub Med, Medline, Embase, China National Knowledge Infrastructure Database, Wanfang and China Science and Technology Journal Database until on January 2017. In this Meta-analysis, enrolled were the studies, including experimental group(with conventional medical treatment plus Qigong therapy) and control group(with conventional medicaltreatment plus diet control or other exercises).Then, the standardized mean differences(SMDs) of fasting blood-glucose(FBG), 2-hplasmaglucose(2 h PG), hemoglobin Alc(Hb Alc), triglyceride(TG),total cholesterol(TC), high-density lipoprotein(HDL) and low density lipoprotein(LDL), as well as their 95% confidence interval(CIs) were calculated to evaluate the effect of Qigong on patients with T2 DM by Rev Man 5.2 and Stata 11.0 ***: Totally 834 cases of T2 DM from 11 studies were included in this review. The pooled SMDs with its 95% CIs of FBG, 2 h PG, Hb Alc, TG,TC, HDL and LDL were-0.70(-0.93,-0.47),-0.66(-1.11,-0.21),-0.73(-0.96,-0.50),-1.05(-1.67,-0.43),-0.42(-1.12, 0.28), 0.69(0.19, 1.19), and-0.26(-0.69, 0.18), *** pooled data showed significantly difference between Qigong and the levels of FBG, 2 h PG, Hb A1 c,TG, and HDL in patients with T2 DM(P < 0.05).CONCLUSION: Combining with conventional medical treatment, Qigong exercise might have significant effect on T2 DM in Chinese patients.

关键词： Qigong Diabetes mellitus type 2 Blood glucose Meta-analysis Asian continental an-cestry group

A Preliminary Genetic Linkage Map of Sinonovacula constricta(Lamarck, 1818) Based on Microsatellites Derived from RAD Sequencing

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Journal of Ocean University of China 2018年第4期17卷 947-956页

作者： wu xueping FENG Yanwei JIANG Hailin LIU Xiangquan PAN Ying Key Laboratory of Marine Ecological Restoration Shandong Marine Resource and Environment Research Institute College of Animal Science and Technology Guangxi University Key Laboratory of Protection and Utilization of Marine Resources Guangxi University of Nationalities

Sinonovacula constricta is one of the important economic aquaculture species in China. In this study, we constructed genetic linkage maps of S. constricta based on 300 microsatellite markers derived from RAD-seq using an F1 full-sib family. The female map contained 204 microsatellites assigned to 22 linkage groups, which covered 1529.5 cM with an average interval of 10.3 cM. The male consisted of 187 microsatellites in 19 linkage groups corresponding to the haploid chromosome number(n(28)19), which spanned 1429.3 cM with an average interval of 8.7 cM. The genome coverage was approximately 83.5% and 81.4%, respectively. An integrated map was constructed according to the common markers in parental linkage groups, which had a total length of 1683.8 cM with an average interval of 7.3 cM. The genome coverage of the integrated map was approximately 86.3%. The genetic linkage map would form the foundation for further studies on the quantitative trait loci(QTL), as well as accelerating the breeding process of this species.

关键词： linkage maps Sinonovacula constricta microsatellite marker RAD sequencing

Vapor growth of WSe2/WS2 heterostructures with stacking dependent optical properties

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Nano Research 2019年第12期12卷 3123-3128页

作者： xueping wu Xiao Wang Honglai Li Zhouxiaosong Zeng Biyuan Zheng Danliang Zhang Fang Li Xiaoli Zhu Ying Jiang Anlian Pan Key Laboratory for Micro-Nano Physics and Technology of Hunan Province School of Physics and ElectronicsCollege of Materials and EngineeringState Key Laboratory of Chemo/Biosensing and ChemometricsHunan UniversityChangsha 410082China

Two-dimensional(2D)vertically stacked heterostructures based on layered transition-metal dichalcogenides(MDCs)have remarkablepote ntial in future applications due to their rich in terlayer related properties,such as in terlayer excitons,tun able interlayer band ***,the controlled growth of TMDC bilayer heterostructures with preferred stacking structure remains ***,we report atwo-step van der Waals epitaxial vapor growth of WSe2/WS2 vertically stacked bilayer heterostructures with controllable commensurate crystallographic alignments(so called AA and AB stacki ng),by controlling the deposition *** patter ns were obtai ned in bothAA and AB stacked WSe2/WS2 *** stacking configuration of the vertical heterostructures was verified by the secondharmonic generation *** and Raman spectroscopy studies further confirm that the heterostructures with differentstacking configuration have obviously different optical properties,which is ascribed to the distinct in terlayer coupling and resonance excitation between the distinguishing AA and AB stacked *** controlled growth of AA and AB stacked heterostructures could provide an importa nee platform not only for fun dame ntal researches but also for functional electronic and optoelectronic deviceapplications.

关键词： two-dimensional vertical heterostructure stacking controllable

Se-alloying reducing lattice thermal conductivity of Ge_(0.95)Bi_(0.05)Te

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Journal of Materials Science & Technology 2022年第11期106卷 249-256页

作者： De-Zhuang Wang Wei-Di Liu Xiao-Lei Shi Han Gao Hao wu Liang-Cao Yin Yuewen Zhang Yifeng Wang xueping wu Qingfeng Liu Zhi-Gang Chen State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical EngineeringNanjing Tech UniversityNanjing211800China Centre for Future Materials University of Southern QueenslandSpringfield CentralQLD 4300Australia School of Mechanical and Mining Engineering The University of QueenslandBrisbaneQLD 4072Australia Key Laboratory of Material Physics of Ministry of Education School of Physics and MicroelectronicsZhengzhou UniversityZhengzhou450052China College of Materials science and engineering Nanjing Tech UniversityNanjing211800China School of Chemistry and Chemical Engineering Hefei University of TechnologyHefei230009China CAS Key Laboratory of Carbon Materials Institute of Coal ChemistryChinese Academy of SciencesTaiyuan030001China

High lattice thermal conductivity of intrinsic GeTe limits the wide application of GeTe-based ***,the optimization of GeTe-based thermoelectric materials has been focusing on reducing lattice thermal conductivity via strengthening phonon *** this study,we systematically studied thermoelectric properties of Se-alloyed Ge_(0.95) Bi_(0.05) Te via theoretical calculations,structural characterizations,and performance *** results indicate that Se-alloying can induce dense point defects with mass/strain-field fluctuations and correspondingly enhance point defect phonon scattering of the Ge_(0.95) Bi_(0.05) Te ***-alloying might also change chemical bonding strength to introduce resonant states in the base frequency of Ge_(0.95) Bi_(0.05) Te matrix,which can strengthen Umklapp phonon ***,a decreased lattice thermal conductivity from∼1.02 W m^(−1) K^(−1) to∼0.65 W m^(−1) K^(−1) at 723 K is obtained in Ge_(0.95) Bi_(0.05) Te_(1-x) Se_(x) pellets with increasing the Se content from 0 to 0.3.A peak figure of merit of∼1.6 at 723 K is achieved in Ge_(0.95) Bi_(0.05) Te_(0.7) Se_(0.3) pellet,which is∼77%higher than that of pristine *** study extends the understanding on the thermoelectric performance of GeTe.

关键词： Thermoelectric GeTe Se-alloying Lattice thermal conductivity

Distribution of soil aggregates and organic carbon in deep soil under long-term conservation tillage with residual retention in dryland

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Journal of Arid Land 2019年第2期11卷 241-254页

作者： WANG Bisheng GAO Lili YU Weishui WEI Xueqin LI Jing LI Shengping SONG Xiaojun LIANG Guopeng CAI Dianxiong wu xueping Institute of Agricultural Resources and Regional Planning Chinese Academy of Agricultural Sciences

To ascertain the effects of long-term conservation tillage and residue retention on soil organic carbon(SOC) content and aggregate distribution in a deep soil(>20-cm depth) in a dryland environment,this paper analyzed the SOC and aggregate distribution in soil, and the aggregate-associated organic carbon(OC) and SOC physical fractions. Conservation tillage(reduced tillage with residue incorporated(RT) and no-tillage with residue mulch(NT)) significantly increased SOC sequestration and soil aggregation in deep soil compared with conventional tillage with residue removal(CT). Compared with CT, RT significantly increased the proportion of small macroaggregates by 23%–81% in the 10–80 cm layer, and the OC content in small macroaggregates by 1%–58% in the 0–80 cm layer. RT significantly increased(by 24%–90%) the OC content in mineral-SOC within small macroaggregates in the 0–60 cm layer, while there was a 23%–80% increase in the 0–40 cm layer with NT. These results indicated that:(1) conservation tillage treatments are beneficial for soil aggregation and SOC sequestration in a deep soil in a dryland environment; and(2)the SOC in mineral-associated OC plays important roles in soil aggregation and SOC sequestration. In conclusion, RT with NT is recommended as an agricultural management tool in dryland soils because of its role in improving soil aggregation and SOC sequestration.

关键词： long-term tillage residue retention soil aggregates SOC deep soil dryland

页岩气水平井地质导向钻进中的储层“甜点”评价技术

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天然气工业 2016年第5期36卷 74-80页

作者：吴雪平中国石化江汉石油工程有限公司钻井一公司

随钻自然伽马探测手段在四川盆地涪陵国家级页岩气产能示范区水平井导向实践中暴露出储层特征显示不明确、"甜点"层钻遇率低的问题。为此,通过研究该区页岩标志层、"甜点"层的岩性、物性及含气性特征,建立其与已测量的自然伽马值的对应... 详细信息

随钻自然伽马探测手段在四川盆地涪陵国家级页岩气产能示范区水平井导向实践中暴露出储层特征显示不明确、"甜点"层钻遇率低的问题。为此,通过研究该区页岩标志层、"甜点"层的岩性、物性及含气性特征,建立其与已测量的自然伽马值的对应关系,总结得出了该区页岩储层"甜点"判别方法,以此作为LWD随钻地质导向轨迹实时控制的依据。焦页14-3HF井的现场试验结果表明,实钻水平段1 540 m,"甜点"钻遇率和储层钻遇率均为100%,优质"甜点"钻遇率达93.6%,单井完井测试平均无阻流量达到103.24×10~4 m^3/d,取得了非常好的效果。结论认为,该储层"甜点"层判别和识别技术能够更好地指示钻头在"甜点"层中钻进,有利于全面发挥地质导向技术在页岩气水平井钻井中的技术优势。

关键词：四川盆地焦石坝页岩气田页岩气储集层 “甜点”评价水平井地质导向 LWD

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“W.H.先生的画像”论析

外国文学研究 2006年第5期28卷 81-85页

作者：吴学平广州大学人文学院中文系

在“W.H.先生的画像”中,王尔德对莎士比亚十四行诗的献赠对象提出了新的见解,并深入分析了莎士比亚献诗的原因。王尔德的分析,不仅体现了他对莎士比亚十四行诗的个性化解读,而且流露出王尔德的内心隐秘,为我们了解王尔德的“龙阳之兴... 详细信息

在“W.H.先生的画像”中,王尔德对莎士比亚十四行诗的献赠对象提出了新的见解,并深入分析了莎士比亚献诗的原因。王尔德的分析,不仅体现了他对莎士比亚十四行诗的个性化解读,而且流露出王尔德的内心隐秘,为我们了解王尔德的“龙阳之兴”提供了极有价值的参考资料。

关键词：王尔德莎士比亚同性恋十四行诗 “W.H.先生的画像”