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Defect-rich ultrathin poly-heptazine-imide-framework nanosheets with alkali-ion doping for photocatalytic solar hydrogen and selective benzylamine oxidation

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Nano Research 2022年第10期15卷 8760-8770页

作者： Chaofeng zhu Xiao Luo Congyan Liu Yang Wang Xihai Chen Yan Wang qing Hu Xiaojun Wu Bo Liu School of Chemistry and materials Science University of Science and Technology of ChinaHefei 230026China Synergetic Innovation of Quantum Information&Quantum Technology CAS Key Laboratory of Materials for Energy Conversionand CAS Center for Excellence in NanoscienceSchool of Chemistry and Materials SciencesUniversity of Science and Technology of ChinaHefei 230026China max Planck Institute of Colloids and Interfaces Am Mühlenberg 114476 PotsdamGermany

Polymeric carbon nitride(CN)as a metal-free photocatalyst holds great promise to produce high-value chemicals and H_(2) fuel utilizing clean solar ***,the wider deployment of pristine CN is critically hampered by the poor charge carrier transport and high ***,we develop a facile salt template-assisted interfacial polymerization strategy that insitu introduces alkali ions(Na+,K+)and nitrogen defects in CN(denoted as v-CN-KNa)to simultaneously promote charge separation and transportation and steer photoexcited holes and electrons to their oxidation and reduction *** photocatalyst exhibits an impressive photocatalytic H_(2) evolution rate of 8641.5μmol·g^(−1)·h^(−1)(33-fold higher than pristine CN)and also works readily in real seawater(10752.0μmol·g^(−1)·h^(−1))with a high apparent quantum efficiency up to 18.5%at 420 *** addition,we further demonstrate that the v-CN-KNa can simultaneously produce H_(2) and N-benzylidenebenzylamine without using any other sacrificial *** situ characterizations and DFT calculations reveal that the alkali ions notably promote charge transport,while the nitrogen defects generate abundant edge active sites,which further contribute to efficient electron excitation to trigger photoredox reactions.

关键词： carbon nitride photocatalysis alkali ion doping hydrogen production amine oxidative coupling

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Ghrelin alleviates 6-hydroxydopamine-induced neurotoxicity in SH-SY5Y cells

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Neural Regeneration Research 2022年第1期17卷 170-177页

作者： Xin He Wei Yuan Chun-qing Yang Lu zhu Fei Liu Juan Feng Yi-Xue Xue Department of Neurobiology School of Life SciencesChina Medical UniversityShenyangLiaoning ProvinceChina Department of Neurology Shengjing Hospital of China Medical UniversityShenyangLiaoning ProvinceChina Department of Orthopedics First Hospital of China Medical UniversityShenyangLiaoning ProvinceChina Department of Neurosurgery Shengjing Hospital of China Medical UniversityShenyangLiaoning ProvinceChina

Ghrelin is a neuropeptide that has various physiological functions and has been demonstrated to be neuroprotective in a number of neurological disease ***,the underlying mechanisms of ghrelin in Parkinson’s disease remain largely *** current study aimed to study the effects of ghrelin in a 6-hydroxydopamine(6-OHDA)-induced Parkinson’s disease model and evaluate the potential underlying *** the present study,we treated an SH-SY5 Y cell model with 6-OHDA,and observed that pretreatment with different concentrations of ghrelin(1,10,and 100 nm)for 30 minutes relieved the neurotoxic effects of 6-OHDA,as revealed by Cell Counting Kit-8 and Annexin V/propidium iodide(PI)apoptosis *** transcription quantitative polymerase chain reaction and western blot assay results demonstrated that 6-OHDA treatment upregulatedα-synuclein and lincRNA-p21 and downregulated TG-interacting factor 1(TGIF1),which was predicted as a potential transcription regulator of the gene encodingα-synuclein(SNCA).Ghrelin pretreatment was able to reverse the trends caused by *** Annexin V/PI apoptosis assay results revealed that inhibiting eitherα-synuclein or lincRNA-p21 expression with small interfering RNA(siRNA)relieved 6-OHDA-induced cell ***,inhibiting lincRNA-p21 also partially upregulated *** retrieving information from.a.bioinformatics database and performing both double luciferase and RNA immunoprecipitation assays,we found that lincRNA-p21 and TGIF1 were able to form.a.double-stranded RNA-binding protein Staufen homolog 1(STAU1)binding site and further activate the STAU1-mediated mRNA decay *** addition,TGIF1 was able to transcriptionally regulateα-synuclein expression by binding to the promoter of *** Annexin V/PI apoptosis assay results showed that either knockdown of TGIF1 or overexpression of lincRNA-p21 notably abolished the neuroprotective effects of ghrelin against 6-OHDA-induced ***

关键词： 6-hydroxydopamine apoptosis ghrelin lincRNA-p21 neuropeptide neurotoxicity Parkinson’s disease STAU1-mediated mRNA decay TGIF1 α-synuclein

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Preparation of sinter with low reduction degradation index for COREX reduction in a high proportion

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Journal of Iron and Steel Research(International) 2023年第4期30卷 635-649页

作者： Sheng-hu Lu Jian Pan Si-wei Li De-qing zhu Zheng-qi Guo Yue Shi Ben-jing Shi School of minerals Processing and Bioengineering Central South UniversityChangsha 410083HunanChina National Engineering Research Center of Sintering and Pelletizing Equipment System Zhongye Changtian International Engineering Co.Ltd.Changsha 410205HunanChina

The sinter with low reduction degradation index(RDI)for COREX reduction was prepared by separated granulation sintering *** results illustrate that the productivity and tumble index are attained to be 1.64 t m^(-2)h^(-1)and 59.25%,respectively,in pot tests under the optimal *** the reducing condition simulating COREX shaft furnace,RDI_(+6.3 mm),RDI_(+3.15 mm),and reducibility index of the sinter reach 63.05%,81.52%,and 83.65%,*** with traditional sintering process,the productivity rose by 14.69%,and RDI_(+6.3) mm.a.d RDI_(+3.15) mm were increased by 157.54%and 32.70%,*** addition,as the proportion of sinter reached 60%,RDI_(+6.3 mm.a.d RDI_(+3.15 mm)of comprehensive burden were achieved to be 73.39%and 84.28%,respectively,which could completely meet the requirement of COREX shaft furnace for *** mechanism was demonstrated that the more silicoferrites of calcium.a.d aluminum.a.d silicate phase occurred as well as magnetite,and the amount of Fe_(2)O_(3)decreased substantially in the sinter by separated granulation sintering ***,the low-temperature reducing stress is restrained,with the increase in sinter strength.

关键词： COREX Sintering Separated granulation Reduction degradation index Comprehensive burden microstructure

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multispectral ErBO_(3)@ATO porous composite microspheres with laser and electromagnetic wave com.a.ible absorption

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Rare metals 2023年第7期42卷 2406-2418页

作者： Song-Song Guo Jian-Ping zhu Zhi Song qing-Guo Ren Tong Feng Qi-Tu Zhang Li-Xi Wang College of materials Science and Engineering Nanjing Tech UniversityNanjing211816China Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites Nanjing211816China

The high-speed advances in electromagnetic(Em)wave and laser detection technology have accelerated the innovation of absorbing materials toward specific multi-band *** is difficult to achieve dual absorption of Em waves and near-infrared lasers by absorbing materials in a single frequency band;the design of high-performance laser-Em wave multi-band com.a.ible absorbing materials is ***,ErBO_(3)@ATO(erbium borate/antimony-doped tin oxide)porous composite microspheres with an average size of 15-20μm.a.e produced solvothermal method and self-assembly,which exhibit excellent laser-Em wave com.a.ible *** porous structure on the surface of ErBO_(3)microspheres provides heterogeneous nucleation sites for ATO particle *** minimum reflectivity of the composite for1.06 and 1.54μm lasers is 9.59%and 4.79%,which is0.57%and 3.78%lower than those of pure ATO particles,*** composites containing 70 wt%porous ErBO_(3)@ATO reveal the minimum reflection loss(RL)value of-31.6 dB,and an effective absorption band width reaches 2.08 GHz at 2.5 mm *** mechanism of near-infrared laser and Em wave com.a.ible absorption is the synergistic effect of the energy level transition of ErBO_(3)and the dielectric loss of ATO,coupled with the large surface area and porous structure of the micro ***,the designed porous ErBO_(3)@ATO composite microspheres can be an attractive choice for lasers and Em wave high-quality com.a.ible absorption.

关键词： Core-shell ErBO_(3)@antinomy-doped tin oxide(ATO) Porous microsphere Laser reflection Electromagnetic(Em)wave loss

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A molecular framework underlying low-nitrogeninduced early leaf senescence in Arabidopsis thaliana

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molecular Plant 2023年第4期16卷 756-774页

作者： Hongmei Fan Shuxuan Quan qing Ye Lei Zhang Wei Liu Ning zhu Xiaoqi Zhang Wenyuan Ruan Keke Yi Nigel m.Crawford Yong Wang State Key Laboratory of Crop Biology College of Life SciencesShandong Agricultural UniversityTai'anShandong 271018China Key Laboratory of Plant Nutrition and Fertilizer Ministry of AgricultureInstitute of Agricultural Resources and Regional PlanningChinese Academy of Agricultural SciencesBeijing 10081China Section of Cell and Developmental Biology Division of Biological ScienceUniversity of California at San DiegoLa JollaCA 92093-0116USA

Nitrogen(N)deficiency causes early leaf senescence,resulting in accelerated whole-plant maturation and severely reduced crop ***,the molecular mechanisms underlying N-deficiency-induced early leaf senescence remain unclear,even in the model species Arabidopsis *** this study,we identified Growth,Development and Splicing 1(GDS1),a previously reported transcription factor,as a new regulator of nitrate(NO3)signaling by a yeast-one-hybrid screen using a NO3enhancer fragment from the promoter of *** showed that GDS1 promotes NO3 signaling,absorption and assimilation by affecting the expression of multiple NO3 regulatory genes,including Nitrate Regulatory Gene2(NRG2).Interestingly,we observedthat gds1mutants show early leaf senescence as well as reduced NO3-contentand Nuptake under N-deficient *** analyses indicated that GDS1 binds to the promoters of several senescence-related genes,including Phytochrome-lnteracting Transcription Factors 4 and 5(PIF4 and PIF5)and represses their ***,we found that N deficiency decreases GDS1 protein accumulation,and GDS1 could interact with Anaphase Promoting Complex Subunit 10(APC10).Genetic and biochemical experiments demonstrated that Anaphase Promoting Complex or Cyclosome(APC/C)promotes the ubiquitination and degradation of GDS1 under N deficiency,resulting in loss of PIF4 and PiF5 repression and consequent early leaf ***,we discovered that overexpression of GDS1 could delay leaf senescence and improve seed yield and N-use efficiency(NUE)in *** sum.a.y,our study uncovers a molecular framework illustrating a new mechanism underlying low-N-induced early leaf senescence and provides potential targets for genetic improvement of crop varieties with increased yield and NUE.

关键词： nitrate signaling GDS1 nitrogen-deficiency-induced leaf senescence PIF4/PIF5 APC/C ubiquitina-tion NUE

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A Wideband microwave Holography methodology for Reflector Surface m.a.urement of Large Radio Telescopes

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Research in Astronomy and Astrophysics 2022年第9期22卷 140-151页

作者： Zan Wang De-qing Kong Hong-Bo Zhang Xin-Ying zhu Ze-Xin Liu Yu-Chen Liu Key Laboratory of Lunar and Deep Space Exploration National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100010China University of Chinese Academy of Sciences Beijing 100049China

most reflector surface holographic m.a.urements of a large radio telescope utilize a geostationary satellite as the signal source. The shortcoming is that those m.a.urements could only be done at a limited elevation angle due to the satellite’s relatively stationary state. This paper proposed a new wideband microwave holographic m.a.urement method based on radio sources to achieve full-elevation-angle m.a.urement with small size reference antenna. In theoretical derivation, the time delay and phase change due to path length and device difference between the antenna under test and reference antenna are compensated first. Then the correct method of wideband holography effect, which is because of antenna pattern differing under different wavelengths when receiving a wideband signal, is presented. To verify the proposed methodology, a wideband microwave holographic m.a.urement system is established, the data processing procedure is illustrated, and the reflector surface m.a.urement experiments on a 40 m radio telescope at different elevation angles are conducted. The result shows that the primary reflector surface root-m.a.-square at around elevation angles of 28°, 44°, 49°, and 75° are respectively 0.213 mm, 0.170 mm, 0.188 mm, and 0.199 mm. It is basically consistent with the real data, indicating that the proposed wideband microwave holography methodology is feasible.

关键词： astronomical instrumentation methods and techniques telescopes methods:analytical atmospheric effects

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用HPLC-mS/mS法同时测定患者血浆中吉非替尼、厄洛替尼、尼洛替尼和伊马替尼的浓度

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中国临床药理学杂志 2024年第6期40卷 899-903页

作者：郑天伦徐敬朴韩竺杭李文利董维冲张志清河北医科大学第二医院药学部河北石家庄050000

目的建立同时测定吉非替尼、厄洛替尼、尼洛替尼和伊马替尼血药浓度的高效液相色谱串联质谱(HPLC-mS/mS)方法。方法用乙腈沉淀蛋白法处理血浆样品,用Diamonsil C18色谱柱(150 mm×4.6 mm,3.5μm)进行色谱分离,流动相为0.1%甲酸水(A)—0... 详细信息

目的建立同时测定吉非替尼、厄洛替尼、尼洛替尼和伊马替尼血药浓度的高效液相色谱串联质谱(HPLC-mS/mS)方法。方法用乙腈沉淀蛋白法处理血浆样品,用Diamonsil C18色谱柱(150 mm×4.6 mm,3.5μm)进行色谱分离,流动相为0.1%甲酸水(A)—0.1%甲酸乙腈(B);梯度洗脱,流速为0.7 mL·min^(-1),柱温40℃,进样量3μL。以安罗替尼为内标,用电喷雾电离源,采用正电离模式,以多反应监测的方式进行扫描。考察该方法的专属性、标准曲线、定量下限、精密度、准确度、回收率、基质效应和稳定性。测定20例慢性粒细胞白血病(CmL)患者伊马替尼和厄洛替尼的谷浓度及3例非小细胞肺癌(NSCLC)患者吉非替尼和厄洛替尼的谷浓度。结果4种药物的标准曲线分别为吉非替尼:y=2.536×10^(-3)x+9.372×10^(-3)(线性范围20~2000 ng·mL^(-1),R^(2)=0.9966),厄洛替尼:y=3.573×10^(-3) x+7.406×10^(-3)(线性范围50~5000 ng·mL^(-1),R2=0.9949),尼洛替尼:y=1.945×10^(-3) x+0.015643(线性范围50~5000 ng·mL^(-1),R^(2)=0.9906),伊马替尼:y=4.56×10^(-3) x+0.010451(线性范围100~1×10^(4) ng·mL^(-1),R^(2)=0.9963)。日内、日间RSD均小于10%,准确度在90%~110%,提取回收率为91.35%~98.93%(RSDmL^(-1),伊马替尼血药浓度范围在757.77~2637.71 ng·mL^(-1),吉非替尼血药浓度范围为214.76~387.40 ng·mL^(-1),厄洛替尼血药浓度为569.57 ng·mL^(-1)。结论所建立HPLC-mS/mS方法简单、快速、灵敏度高、专属性好,可用于临床血药浓度监测。

关键词：吉非替尼厄洛替尼尼洛替尼伊马替尼高效液相色谱串联质谱法

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双氧水吸附净化工艺中失活树脂的失活机制及再生方法研究

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南京工业大学学报（自然科学版） 2024年第1期46卷 20-27页

作者：豆振江杜玮辰韩林朱丹吴家秋刘清汤吉海崔咪芬乔旭南京工业大学化工学院江苏南京211800 南京工业大学材料化学工程国家重点实验室江苏南京211800 浙江恒澜科技有限公司浙江杭州311200

为解决现有双氧水生产工艺中甲醇再生树脂不完全而导致树脂更换频率高的问题,通过借助高分辨液质联用、热重分析、傅里叶红外光谱、X线光电子能谱等表征手段分析了双氧水再生工艺中树脂吸附双氧水前后含有的有机杂质及无法完全再生脱附... 详细信息

为解决现有双氧水生产工艺中甲醇再生树脂不完全而导致树脂更换频率高的问题,通过借助高分辨液质联用、热重分析、傅里叶红外光谱、X线光电子能谱等表征手段分析了双氧水再生工艺中树脂吸附双氧水前后含有的有机杂质及无法完全再生脱附出来的杂质;选用了不同的再生剂对失活树脂进行再生,并通过傅里叶红外变换光谱对再生后树脂进行了表征分析,NaOH溶液处理后失活树脂中属于2甲基环己基醋酸酯的红外特征峰已经完全消失;然后配制了不同浓度的NaOH溶液对失活树脂的再生进行了条件优化,N 2吸脱附测试结果表明,当碱液浓度为0.25 mol/L时,失活树脂的比表面积恢复为575 m^(2)/g,高于甲醇再生后的失活树脂的412 m^(2)/g,其再生效果要优于甲醇再生。

关键词：双氧水失活树脂有机污染物 2甲基环己基醋酸酯再生研究

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大气压气相色谱-串联质谱法同时测定血清中多溴二苯醚和新型溴代阻燃剂

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分析测试学报 2024年第8期43卷 1273-1279页

作者：蒋友胜朱路彭金铃宋嘉宜刘源林晓仕孔令权卓兰张建清深圳市疾病预防控制中心广东深圳518055

建立了大气压气相色谱-串联质谱(APGC-mS/mS)同时测定人体血清8种多溴二苯醚(PBDEs)和9种新型溴代阻燃剂(NBFRs)的方法。0.3 g血清样品经HLB柱固相萃取和30%酸性硅胶柱净化处理后,用DB-5HT毛细管柱(15 m×0.25 mm×0.10μm)分离,APGC-mS... 详细信息

建立了大气压气相色谱-串联质谱(APGC-mS/mS)同时测定人体血清8种多溴二苯醚(PBDEs)和9种新型溴代阻燃剂(NBFRs)的方法。0.3 g血清样品经HLB柱固相萃取和30%酸性硅胶柱净化处理后,用DB-5HT毛细管柱(15 m×0.25 mm×0.10μm)分离,APGC-mS/mS检测分析。PBDEs和NBFRs的检测分别采用同位素稀释法和内标法。采用血清标准参考物质SRm 1958和基质加标进行方法验证,与SRm 1958给出的参考质量分数值范围对比,多溴二苯醚各化合物浓度的测定值均在参考质量分数值的范围内,相对标准偏差(RSD,n=6)为6.1%~18%。NBFRs的基质加标回收率为81.7%~126%,RSD为6.2%~18%。该方法灵敏度和准确度高、方法性能稳定,满足人体血清中溴代阻燃剂检测的要求。

关键词：多溴二苯醚新型溴代阻燃剂血清大气压气相色谱-串联质谱

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Preparation of Thermal Insulation Ceramics Using Felsic Tailings as main Raw material and Soda-ash Dregs as Flux

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Journal of Wuhan University of Technology(materials Science) 2023年第1期38卷 31-41页

作者：王志明 YAO Geng WANG Qiang zhu Xiangnan QU meiyun ZHAO Wei LIU qing SUN Shaokang XIA Chuanbo 吕宪俊 School of Chemical and Biological Engineering Shandong University of Science and TechnologyQingdao 266590China Shandong Institute of Geological Sciences Key Laboratory of Gold Mineralization Processes and Resource UtilizationMNRShandong Provincial Key Laboratory of Metallogenic Geological Process and Resource UtilizationJinan 250013China College of Chemistry Chemical Engineering and Materials ScienceZaozhuang UniversityZaozhuang 277160China Jigang International Engineering&Technology Co. Ltd.Jinan 250101China

Low-cost thermal insulation porous ceramics with uniform pore diameter and low bulk density were prepared with soda-ash dregs and felsic *** investigated the effect of temperature,foaming agent,fluxing agent,Al_(2)O_(3)and CaO content on the pore structure and crystal phase of porous *** effect of Ca^(2+)in soda-ash dregs on the preparation of quartz-feldspar based porous ceramics was *** results showed that the contribution of Ca^(2+)to the preparation of porous ceramics in this system was mainly to accelerate the Si-O bond fracture and reduce the sintering temperature at the initial stage of sintering,which destroyed the needle-like feldspar in the high temperature melt and reduced the melt viscosity,thus reduced the foaming resistance and promoted the porous products with uniform pore size *** Ca^(2+)content on the high side can participate in the formation of crystals in *** generated needle-like diopside and augite,which have small length-diameter ratio,will negligibly change in the viscosity of melt at high temperatures,and their inhibition effect on pores is not as good as that of feldspar with large length-diameter ratio,resulting in the merger and collapse of *** the increase of diopside and augite can improve the compressive strength of porous products to some *** ceramic products containing needle-like feldspar phase can be prepared by using two kinds of solid waste,which can improve the compressive strength of the products and reduce the raw material cost and energy consumption while comprehensively utilizing the double solid *** optimal product has a bulk density of 0.45 g/cm^(3),a compressive strength of 3.17 m.a.and a thermal conductivity of 0.11 W/(m·K).

关键词： felsic tailings Ca-riched Soda-ash dregs low-cost thermal insulation porous ceramics high content of solid waste transformation of needle-like crystal phase

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