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1Influence of the post-treatment of HZSM-5 zeolite on catalytic performance for alkylation of benzene with methanol显示文摘The porous material HZSM-5 zeolite with micro-mesopore hierarchical porosity was prepared by post-treatment(combined alkali treatment and acid leaching) of parent zeolite and its catalytic performance for benzene alkylation with methanol was investigated. The effect of post-treatment on the textural properties was characterized by various techniques(including ICP-AES, XRD, nitrogen sorption isotherms, SEM, NH3-TPD, Py-IR and TG). The results indicated that the post-treatment could modify the structural and acidic properties of HZSM-5 zeolite. In this procedure, not only additional mesopores were created by selective extraction of silicon but also the acidity was tuned. Consequently, the modified HZSM-5 zeolite showed larger external surface area with less acid sites as compared to the parent zeolite. It was found out that the modified zeolite exhibited a higher benzene conversion and xylene selectivity for alkylation of benzene with methanol as well as excellent life span of the catalyst than conventional ones. This can be explained by the facts that the presence of additional mesopores improved the diffusion property in the reactions. Furthermore, the modified zeolite showed an appropriate Br?nsted acidity for effective suppression of the side reaction of methanol to olefins, thus reduced the accumulation of coke on the HZSM-5 zeolite, which was favorable for the catalyst stability. In comparison with the parent HZSM-5 zeolite,the modified zeolite by alkali treatment and acid leaching showed better performance for the benzene alkylation with methanol.Qingtao Wang Wenwen Han Hualei Hu Jinghui Lyu Xiaolong Xu Qunfeng Zhang Hongjing Wang Xiaonian Li 2017Chinese Journal of Chemical Engineering2017,25,12:13
2Effect of soothing-liver and nourishing-heart acupuncture on early selective serotonin reuptake inhibitor treatment onset for depressive disorder and related indicators of neuroimmunology:a randomized controlled clinical trial显示文摘OBJECTIVE:To observe the effect of soothing-liver and nourishing-heart acupuncture on selective serotonin reuptake inhibitor(SSRIs) treatment effect onset in patients with depressive disorder and related indicators of neuroimmunology.METHODS:Overall,126 patients with depressive disorder were randomly divided into a medicine and acupuncture-medicine group using a random number table.Patients were treated for 6 consecutive weeks.The two groups were evaluated by the Montgomery-Asberg Depression Rating Scale(MADRS) and Side Effects Rating Scale(SERS) to assess the effect of the soothing-liver and nourishing-heart acupuncture method on early onset of SSRI treatment effect.Changes in serum 5-hydroxytryptamine(5-HT) and inflammatory cytokines before and after treatment were recorded and compared between the medicine group and the acupuncture-medicine group.RESULTS:The acupuncture-medicine group had significantly lower MADRS scores at weeks 1,2,4,and 6 after treatment compared with the medicine group(P < 0.01).The acupuncture group had significantly lower SERS scores at weeks 1,2,4,and 6 after treatment compared with the medicine group(P < 0.01).At 6 weeks after treatment,serum 5-HT in the acupuncture-medicine group was significantly higher compared with the medicine group(P <0.01).lnterleukin-6(IL-6) in the acupuncture-medicine group was significantly lower than that in the medicine group(P < 0.01),whereas there was no significant difference in IL-1(3 between the groups(P > 0.05).Anti-inflammatory cytokines IL-4 and IL-10 were significantly higher in the acupuncture-medicine group compared with the medicine group(P < 0.01,P < 0.05,respectively).CONCLUSION:The soothing-liver and nourishing-heart acupuncture method can effectively accelerate the onset of SSRI effects when treating depressive disorder and can significantly reduce the adverse reactions of SSRIs.Moreover,acupuncture can enhance serum 5-HT and regulate the balance of pro-inflammatory cytokines and anti-inflammatory cytokines.Liu Yi Feng Hui Mo Yali Gao Jingfang Mao Hongjing Song Mingfen Wang Shengdong Yin Yan Liu Wenjuan 2015Journal of Traditional Chinese Medicine2015,35,5:13
3CD147-spike protein is a novel route for SARS-CoV-2 infection to host cells显示文摘In face of the everlasting battle toward COVID-19 and the rapid evolution of SARS-CoV-2,no specific and effective drugs for treating this disease have been reported until today.Angiotensin-converting enzyme 2(ACE2),a receptor of SARS-CoV-2,mediates the virus infection by binding to spike protein.Although ACE2 is expressed in the lung,kidney,and intestine,its expressing levels are rather low,especially in the lung.Considering the great infectivity of COVID-19,we speculate that SARS-CoV-2 may depend on other routes to facilitate its infection.Here,we first discover an interaction between host cell receptor CD147 and SARS-CoV-2 spike protein.The loss of CD147 or blocking CD147 in Vero E6 and BEAS-2B cell lines by anti-CD147 antibody,Meplazumab,inhibits SARSCoV-2 amplification.Expression of human CD147 allows virus entry into non-susceptible BHK-21 cells,which can be neutralized by CD147 extracellular fragment.Viral loads are detectable in the lungs of human CD147(hCD147)mice infected with SARS-CoV-2,but not in those of virus-infected wild type mice.Interestingly,virions are observed in lymphocytes of lung tissue from a COVID-19 patient.Human T cells with a property of ACE2 natural deficiency can be infected with SARS-CoV-2 pseudovirus in a dosedependent manner,which is specifically inhibited by Meplazumab.Furthermore,CD147 mediates virus entering host cells by endocytosis.Together,our study reveals a novel virus entry route,CD147-spike protein,which provides an important target for developing specific and effective drug against COVID-19.Ke Wang Wei Chen Zheng Zhang Yongqiang Deng Jian-Qi Lian Peng Du Ding Wei Yang Zhang Xiu-Xuan Sun Li Gong Xu Yang Lei He Lei Zhang Zhiwei Yang Jie-Jie Geng Ruo Chen Hai Zhang Bin Wang Yu-Meng Zhu Gang Nan Jian-Li Jiang Ling Li Jiao Wu Peng Lin Wan Huang Liangzhi Xie Zhao-Hui Zheng Kui Zhang Jin-Lin Miao Hong-Yong Cui Min Huang Jun Zhang Ling Fu Xiang-Min Yang Zhongpeng Zhao Shihui Sun Hongjing Gu Zhe Wang Chun-Fu Wang Yacheng Lu Ying-Ying Liu Qing-Yi Wang Huijie Bian Ping Zhu Zhi-Nan Chen 2020Signal Transduction and Targeted Therapy2020,5,1:9
4Sulfur isotopic composition of the Bainiuchang super-large Ag polymetallic deposit,Yunnan Province,China: Implications for the source of sulfur in ore-forming fluids显示文摘The Bainiuchang deposit in Yunnan Province, China, is located geographically between the Gejiu ore field and the Dulong ore field. In addition to >7000 t Ag reserves, the deposit possesses large-scale Pb, Zn, Sn reserves and a mass of dispersed elements (i.e., In, Cd, Ge, Ga, etc.). Based on systematic studies of sulfur isotopic composition, the authors conclude: The Bainiuchang deposit experienced two epochs of metallogenesis, i.e., the Middle-Cambrian sea-floor exhalative sedimentary metallogenic epoch and the Yanshanian magmatic hydrothermal superimposition metallogenic epoch. In the two metallogenic epochs, the δ34S values of sulfides were all near 0, showing a tendency of being enriched slightly in heavy sulfur. The δ34S values of sulfides in the early metallogenic epoch are within the range of 2‰–5‰ with a peak value range of 2‰–3‰ and an average of 3.0‰, and those of sulfides in the late metallogenic epoch are within the range of 2‰–6‰ with a peak value of 3‰–4‰ and an average of 3.9‰. For the single metallogenic epoch, sulfur in the ore-forming fluids in the early epoch already reached isotopic equilibrium and was derived mainly from underneath the magma chamber or basement metamorphic igneous rocks. Sulfur in the sulfides in the late epoch was derived mainly from magmatic hydrothermal fluids formed in the process of remelting of the basement metamorphic igneous rocks.XIE Hongjing ZHU Chaohui ZHANG Qian WANG Dapeng FAN Liangwu 2009Chinese Journal Of Geochemistry2009,28,3:7
5Oxidation of gaseous elemental mercury in a high voltage discharge reactor显示文摘Effects of the voltage waveform, discharge tooth wheel number and CO2/NO/SO2 concentration in the simulated flue gas on Hg0 oxidation were investigated using a link tooth wheel-cylinder reactor energized by different high voltage power supplies. Negative DC discharge induced more ozone production and a higher Hg0 oxidation efficiency than positive DC discharge and 12 kHz AC discharge. The discharge tooth wheel number had almost no effect on the maximum Hg0 oxidation efficiency. The allowable supplied voltage decreased with the increase of discharge tooth wheel number. CO2 could stabilize the discharge process and increase the maximum voltage for a stable discharge. It has also been found that NO consumed O3 induced by high voltage discharge, thereby decreased Hg0 oxidation efficiency; while SO2 had a slight promoting effect on Hg0 oxidation.WANG Meiyan, ZHU Tianle, LUO Hongjing, TANG Ping, LI Huan School of Chemistry and Environment, Beihang University, Beijing 100191, China. 2009Journal of Environmental Sciences2009,21,12:7
6Physicochemical Control of the Early Permian Xiangshan Fe-Ti Oxide Deposit in Eastern Tianshan(Xinjiang),NW China显示文摘The Xiangshan mafic-ultramafic complex is one of the major Early Permian mafic-ultramafic intrusions in eastern Tianshan(Xinjiang, NW China), and consists of two major intrusive phases. The first intrusive phase is mainly gabbroic rocks hosting ilmenite mineralization, while the second intrusive phase is mainly lherzoilite associated with Ni-Cu sulfide mineralization. The Xiangshan ilmenite orebodies hosted in the Fe-Ti oxide-bearing gabbro occur along the contact between hornblende gabbros and leucogabbros. The hornblende gabbros and Fe-Ti oxide rich gabbros at Xiangshan are newly dated to be Early Permian(280.1 and 279.2 Ma, respectively). Major and trace element compositions of zircons and whole rocks from Xiangshan hornblende gabbro and Fe-Ti oxide gabbro have been measured by in situ excimer laser ablation ICP-MS. Zircon Ce^(4+)/Ce^(3+) ratios based on lattice-strain model and Ti-in-zircon temperatures of hornblende gabbro and Fe-Ti oxide gabbro of the Xiangshan complex are calculated to evaluate the physicochemical variations during the ilmenite mineralization. Whole-rock geochemistry and zircon trace element geochemistry suggest that Fe-Ti oxide gabbros were formed from a basaltic parent magma which had undergone a transfromation from being H_2O-rich to H_2O-poor. During the magmatic evolution, primitive, H_2O-poor basaltic melts may have been replenished into the system, increasing its solidus temperature and decreasing its oxygen fugacity and H_2O contents. This may have supperessed the Ti-rich poikilitic hornblende fractionation and promoted the plagioclase fractionation, which consequently concentrated the ore-forming components in the residual melts and generated the ilmenite mineralization.Yu Shi Yuwang Wang Jingbin Wang Lutong Zhao Hongjing Xie Lingli Long Tao Zou Dedong Li Guochao Zhou 2018Journal of Earth Science2018,29,3:6
7Recombinant vaccine containing an RBD-Fc fusion induced protection against SARS-CoV-2 in nonhuman primates and mice显示文摘The novel coronavirus SARS-CoV-2 has infected more than 104 million individuals and resulted in more than 2.2 million deaths worldwide as of February 7,2021(http://gffzze7c39cdc9e894ca6supxnc6bu0o0u6puq.ffgz.tsg.suse.edu.cn).The COVID-19 pandemic highlights the need for safe and effective vaccines against SARS-CoV-2 infection.Shihui Sun Lei He Zhongpeng Zhao Hongjing Gu Xin Fang Tiecheng Wang Xiaolan Yang Shaolong Chen Yongqiang Deng Jiangfan Li Jian Zhao Liang Li Xinwang Li Peng He Ge Li Hao Li Yuee Zhao Chunrun Gao Xiaoling Lang Xin Wang Guoqiang Fei Yan Li Shusheng Geng Yuwei Gao Wenjin Wei Zhongyu Hu Gencheng Han Yansong Sun 2021Cellular & Molecular Immunology2021,18,4:5
8Production of aryl oxygen-containing compounds by catalytic pyrolysis of bagasse lignin over LaTi0.2Fe0.8O3 prepared by different methods显示文摘To realize the resource and high-value utilization,a new approach,named bagasse lignin(BL) used to produce aryl oxygen-containing compounds by catalytic pyrolysis over perovskite,was proposed,LaTi0.2Fe0.8O3(LTF) samples prepared by the sol-gel method(SG) and the solid-state reaction method(SS)were characterized.The catalytic action on BL pyrolysis was performed by the test of TG-DTG and the evaluation of the fixed bed micro-reactor,the components and contents of the products were determined.The results show that LTF samples have cubic perovskite phase,LTF prepared by SG(LTF-SG) is porous with larger specific surface area than LTF prepared by SS(LTF-SS).During the pyrolysis of BL,the addition of LTF lowers the pyrolysis temperature and the activation energy,the contents of CO2 and CO in gaseous products reduce by 4.6%-8.0% and 30.7%-34.3%,respectively,the total content of aryl oxygencontaining compounds(including phenolics,guaiacols,syringols and phenylates) in liquid products increases from 62 wt% to more than 72 wt%,and LTF-SG shows better catalytic performance.LTF samples have nice phase and catalytic stabilities for BL pyrolysis after five successive redox cycles.Haiying Wang Hongjing Han Enhao Sun Yanan Zhang Jinxin Li Yanguang Chen Hua Song Hongzhi Zhao Yue Kang 2020Journal of Rare Earths2020,38,1:5
9Sequence-related amplified polymorphism primer screening on Chinese fir(Cunninghamia lanceolata(Lamb.) Hook)显示文摘Chinese fir(Cunninghamia lanceolata(Lamb.)Hook) is one of the most important coniferous tree species used for timber production in China. Here, we conducted a sequence-related amplified polymorphism(SRAP) primer screening assay with a total of 594 primer combinations,using 22 forward and 27 reverse primers on four representative Chinese fir genotypes. The obtained results indicated that Chinese fir genomic DNA has a notable amplification bias on the employed forward or reverse primer nucleotides(30selection bases). Out of the tested primer sets, 35 primer combinations with clearly distinguished bands, stable amplification, and rich polymorphism were selected and identified as optimal primer sets. These optimal primer pairs gave a total of 379 scorable bands,including 265 polymorphic bands, with an average of 10.8bands and 7.6 polymorphic bands per primer combination.The produced band number for each optimal primer set ranged from 7 to 14 with a percentage of polymorphic bands spanning from 33.3 to 100.0 %. These primer combinations could facilitate the next SRAP analysis assays in Chinese fir.Huiquan Zheng Hongjing Duan Dehuo Hu Ruping Wei Yun Li 2015Journal of Forestry Research2015,26,1:5
10Effect of the addition of organic carbon sources on nitrous oxide emission in anaerobic-aerobic(low dissolved oxygen)sequencing batch reactors显示文摘The effect of additional organic carbon sources on the production of nitrous oxide(N_(2)O)in anaerobicaerobic(low dissolved oxygen)real wastewater treatment system was investigated.In this paper,three laboratoryscale sequencing batch reactors(SBRs)(SBR-1,SBR-2 and SBR-3)were operating under an anaerobic-aerobic(low dissolved oxygen,0.15-0.45 mg·L^(-1))configuration.The SBRs were‘long-term cultured’respectively with a single municipal wastewater sample,sodium acetate,and a waste-activated sludge alkaline fermentation liquid as the additional carbon sources of real wastewater.Off-gas analysis showed that N_(2)O was emitted into the atmosphere during the aerobic(low dissolved oxygen)period in the three SBRs,and the order of N_(2)O emission rate was SBR-2>SBR-1>SBR-3.It was observed that the higher poly-β-hydroxyvalerate fraction of polyhydroxyalkanoates,the lower glycogen transformation and less nitrite accumulation was in SBR-3,while the opposite behavior was observed in SBR-2.Further research indicated that the interaction of the factors above potentially affected the N_(2)O emission in the anaerobic-aerobic(low dissolved oxygen)system.Hongjing LI Xiurong CHEN Yinguang CHEN 2010Frontiers of Environmental Science & Engineering2010,4,4:5
11Synthesis of Waterborne Polyurethane Modified by Nano-SiO_2 Silicone and Properties of the WPU Coated RDX显示文摘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.Li Yang Zhao Tianbo Qu Xiaoling Ding Hongjing Li Fengyan 2015China Petroleum Processing & Petrochemical Technology2015,17,2:4
12N-Type Mg_(3)Sb_(2-x)Bi_(x) Alloys as Promising Thermoelectric Materials显示文摘N-type Mg_(3)Sb_(2-x)Bi_(x) alloys have been extensively studied in recent years due to their significantly enhanced thermoelectric figure of merit(zT),thus promoting them as potential candidates for waste heat recovery and cooling applications.In this review,the effects resulting from alloying Mg_(3)Bi_(2) with Mg_(3)Sb_(2),including narrowed bandgap,decreased effective mass,and increased carrier mobility,are summarized.Subsequently,defect-controlled electrical properties in n-type Mg_(3)Sb_(2-x)Bi_(x) are revealed.On one hand,manipulation of intrinsic and extrinsic defects can achieve optimal carrier concentration.On the other hand,Mg vacancies dominate carrier-scattering mechanisms(ionized impurity scattering and grain boundary scattering).Both aspects are discussed for Mg_(3)Sb_(2-x)Bi_(x) thermoelectric materials.Finally,we review the present status of,and future outlook for,these materials in power generation and cooling applications.Hongjing Shang Zhongxin Liang Congcong Xu Jun Mao Hongwei Gu Fazhu Ding Zhifeng Ren 2020Research2020,,1:4
13Production of aryl oxygen-containing compounds from catalytic pyrolysis of bagasse lignin over LaTixFe1xO3显示文摘A new approach,named production of aryl oxygen-containing compounds from the catalytic pyrolysis of bagasse lignin(BL) over perovskite oxide,was proposed,A series of LaTixFe1-xO3(LTF-x) samples were prepared by the solid state reaction method.The crystal phase and morphology of LTF-x were characterized by XRD and SEM respectively.Catalytic pyrolysis performance of LTF-x was performed by TG-DTG and the distribution patterns of gaseous,liquid and solid products from BL was investigated using a fixed-bed micro-reactor.The optimal reaction conditions were determined:the pyrolysis temperature was 600℃,the mass ratio of mBL:mLTF-0.2 was 3:1,the veloeity of earrier gas was 100 ml·min-1.The gaseous produets were mainly eomposed of CO2,CO,CH4 and CnHm(n=2-4,m=2 n+2 or m=2 n),The main aryl oxygen-containing compounds in liquid products were phenolics,guaiacols,syringols and phenylates,the rest were benzenes,furans,esters and carboxylic acid.The total contents of aryl oxygencontaining compounds were from 62% up to more than 72% under the action of the perovskite.Moreover,the LTF-0.2 sample had nice regenerability.Haiying Wang Hongjing Han Enhao Sun Yanan Zhang Jinxin Li Yanguang Chen Hua Song Hongzhi Zhao 2019Chinese Journal of Chemical Engineering2019,27,8:4
14Transient acquisition of cross-species infectivity during the evolution of SARS-CoV-2显示文摘Since the coronavirus disease 2019(COVID-19)pandemic began,its causative agent,severe acute respiratory syndrome coronavirus 2(SARS-CoV-2),has spread worldwide.During the global transmission of SARS-CoV-2,mutations in the viral genome have gradually accumulated and have led to the emergence of variants.These emerging variants;including 501Y.V1,501Y.V2 and 501Y.V3(also called the alpha,beta and gamma variants,respectively),rapidly became the predominant epidemic strains and subsequently spread worldwide.Qi Chen Xing-Yao Huang Meng-Xu Sun Rui-Ting Li Hongjing Gu Ying Tian Rong-Rong Zhang Dan Luo Chao Zhou Yifei Zhang Tianshu Cao Na-Na Zhang Yong-Qiang Deng Xiao-Feng Li Cheng-Feng Qin 2021National Science Review2021,8,11:3
15Fiber Bragg Grating (FBG) Sensors Used in Coal Mines显示文摘纤维布拉格栅栏(FBG ) 紧张传感器被用于在在 Dongtan 矿沿着号码 3203 煤采矿脸的废矿保留的网关的衬里的墙的压力变化的联机监视。结果证明有宽测量范围的 FBG 紧张传感器能在沿着废矿保留的网关的支持过程期间精确地测量压力变化并且能提供基础进一步优化支持结构并且决定沿着废矿保留的网关的支持计划。FBG 微地震的传感器在 Xinglong 矿被使用检测微地震的信号。信号受到欢迎并且分析了决定地点和微地震的事件警告的来源的精力水平。FBG 传感器和检测系统为微地震的察觉和地质的灾难察觉显示出一个重要潜力。Jinyu WANG Tongyu LIU Guangdong SONG Hongjing XIE Lianqing LI Xiaolin DENG Zhijie GONG 2014Photonic Sensors2014,4,2:3
16Characterization of a collection of Chinese fir elite genotypes using sequence.related amplified polymorphism markers显示文摘Chinese fir [Cunninghamia lanceolata(Lamb.)Hook] is a major timber tree species in China.In the present study,sequence-related amplified polymorphism(SRAP) markers were used to evaluate the polymorphisms,diversity,and relationships in a collection of Chinese fir elite genotypes(n=103) from the Lechang provenance,an endangered provenance.Thirty-five SRAP primer combinations produced 620 bands among the tested 103 Lechang provenance genotypes and 17 non-Lechang provenance genotypes;577(93.1 %) of these were polymorphic,yielding an average of 16.5 polymorphic bands per primer combination.Of the SRAP primer combinations(n=35),14 ones identified C70.0 % of the 120 genotypes.The Me12–Em19 combination had the strongest discriminatory ability with 93.3 % of the genotypes identified.An UPGMA dendrogram further showed that most of the Lechang provenance genotypes(87.4 %) grouped together(Cluster A).The Lechang genotypes had a considerable amount of genetic variation with genetic similarity from 0.40 to 0.81.The current work may facilitate the management of the endangered Lechang Chinese fir provenance.Hongjing Duan Dehuo Hu Yun Li Huiquan Zheng 2016Journal of Forestry Research2016,27,5:3
17Research on polyhydroxyalkanoates and glycogen transformations: Key aspects to biologic nitrogen and phosphorus removal in low dissolved oxygen systems显示文摘In this paper,a study was conducted on the effect of polyhydroxyalkanoates(PHA)and glycogen transformations on biologic nitrogen and phosphorus removal in low dissolved oxygen(DO)systems.Two laboratory-scale sequencing batch reactors(SBR1 and SBR2)were operating with anaerobic/aerobic(low DO,0.15-0.45 mg·L^(-1))configurations,which cultured a propionic to acetic acid ratio(molar carbon ratio)of 1.0 and 2.0,respectively.Fewer poly-3-hydroxybutyrate(PHB),total PHA,and glycogen transformations were observed with the increase of propionic/acetic acid,along with more poly-3-hydroxyvalerate(PHV)and poly-3-hydroxy-2-methyvalerate(PH2MV)shifts.The total nitrogen(TN)removal efficiency was 68%and 82%in SBR1 and SBR2,respectively.In the two SBRs,the soluble ortho-phosphate(SOP)removal efficiency was 94%and 99%,and the average sludge polyphosphate(poly-P)content(g·g-MLVSS^(-1))was 8.3%and 10.2%,respectively.Thus,the propionic to acetic acid ratio of the influent greatly influenced the PHA form and quantity,glycogen transformation,and poly-P contained in activated sludge and further determined TN and SOP removal efficiency.Moreover,significant correlations between the SOP removal rate and the(PHV+PH2MV)/PHA ratio were observed(R^(2)>0.99).Accordingly,PHA and glycogen transformations should be taken into account as key components for optimizing anaerobic/aerobic(low DO)biologic nitrogen and phosphorus removal systems.Hongjing LI Yinguang CHEN 2011Frontiers of Environmental Science & Engineering2011,5,2:3
18Petrogenesis and Metallogenesis of the Niumaoquan Gabbroic Intrusion Associated with Fe-Ti Oxide Ores in the Eastern Tianshan, NW China显示文摘The Niumaoquan layered gabbroic intrusion is in the southern margin of the Central Asian Orogenic Belt in North Xinjiang, China, and hosts a Fe-Ti oxide deposit in its evolved gabbroic phases. In this paper, we report zircon U-Pb age, Sr-Nd-Hf isotopes, plagioclase chemistry, and whole-rock geochemistry of the Niumaoquan layered gabbroic intrusion. Zircon grains separated from an anorthosite sample analyzed by laser ablation inductively coupled plasma mass spectrometry yielded a concordia age of 314.7±0.74 Ma, indicating that the Niumaoquan ore-bearing gabbroic intrusion was emplaced during the Late Carboniferous. The olivine gabbro texture and plagioclase chemistry suggest that plagioclase was an early crystallized silicate phase that crystallized prior to olivine. Fractional crystallization and accumulation of plagioclase significantly controlled the evolution of the Niumaoquan gabbroic intrusion and contributed to the formation of anorthosite layers, causing metallogenic elements to become enriched in the residual melt. The Niumaoquan gabbroic intrusion is characterized by the enrichment of large ion lithophile elements and depletion of high field strength elements, positive zircon εHf(t) values(+2.1 to +12.2), positive εNd(t) values(+3.3 to +5.2), and low initial ^(87)Sr/^(86)Sr ratios(0.7039 to 0.7047), suggesting that the parental magma was produced by interactions between metasomatized lithospheric mantle and depleted asthenospheric melts at an early post-collision stage. The Fe-Ti oxide mineralization of the Niumaoquan intrusion benefited from interactions between depleted asthenospheric melts and lithospheric mantle, and fractional crystallization of abundant plagioclase and magnesian minerals.SHI Yu WANG Yuwang WANG Jingbin XIE Hongjing MAO Qigui ZHAO Lutong LONG Lingli LI Dedong ZHOU Guochao 2018Acta Geologica Sinica(English Edition)2018,92,5:3
19Exo-celiac liver in Glyptosternum maculatum显示文摘A unique structure in the fish of Glyptosternum maculatum(Regan)(Siluriformes:Sisoridae)is reported.It was identified as a part of the liver named 'exo-celiac liver'.This new organ is located between skin and muscle and connected with the celiac liver by a funiform tissue,'joint belt'.It has similar histological features and isozyme electrophoretogramic bands of lactate dehydrogenase,esterase,malate dehydrogenase and alcohol dehydrogenase as in the celiac liver.This unique organ has biological research value and could serve as an important tool for studying organogenesis and evolution.Li Hongjing Xie Congxin Li Dapeng Chai Yi Liu Hongyan Fan Qixue Zhu Bangke 2007Progress in Natural Science:Materials International2007,17,9:3
20Influence of calcination temperature for LaTi0.2Fe0.8O3 on catalytic pyrolysis of bagasse lignin显示文摘LaTi(0.2)Fe(0.8)O3(LTF)was prepared by the sol-gel method,and the effects of calcination temperature on the structure and properties were investigated,A new method of preparing aryl oxygen-containing compounds from bagasse lignin(BL)by the catalytic pyrolysis over LTF was proposed.The results show that LTF has cubic crystal phase and porous structure and its optimal calcination temperature is 800℃(LTF-800).In the test for catalytic pyrolysis of BL,with the addition of LTF-800,the yield of liquid product reaches the maximum;the contents of phenolics,guaiacols,syringols,phenylates and furans increase obviously,while those of benzenes,esters and carboxylic acid decrease.The total content of aryl oxygencompounds(including phenolics,guaiacols,syringols and phenylates)in liquid product is more than 74 wt%with the addition of LTF-800,larger than that obtained by single BL pyrolysis(62 wt%).LTF could avoid oxygen-containing functional groups from being excessively destroyed.It has nice regeneration performance by controlled combustion of char even after 5 cycles.Haiying Wang Hongjing Han Yanan Zhang Jinxin Li Yanguang Chen Hua Song Enhao Sun Hongzhi Zhao Mei Zhang Dandan Yuan 2019Journal of Rare Earths2019,37,8:3
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