The Bluest Eye is Toni Morrison’s first novel.After its publication,it receives many criticisms.This article aims to ana lyze Pecola and Claudia’s understandings about black culture,then to clarify that different in...The Bluest Eye is Toni Morrison’s first novel.After its publication,it receives many criticisms.This article aims to ana lyze Pecola and Claudia’s understandings about black culture,then to clarify that different interpretations of the very name"the bluest eye"lead to different fates.With different visions of the black heritage,Pecola and Claudia have different perception of the world and thus have widely divergent outcomes in the painful circumstances.展开更多
The present paper reports eight heteropoty blues of double 2:17 motybdophosphates tanthanide comptexes with tacunary Dawson structure, i.e., K_(17)H_2[Ln(P_2Mo_2~ⅤMo_(15)~ⅥO_(16))_2], nH_2O and K_(17)H_4 [Ln(P_2Mo~...The present paper reports eight heteropoty blues of double 2:17 motybdophosphates tanthanide comptexes with tacunary Dawson structure, i.e., K_(17)H_2[Ln(P_2Mo_2~ⅤMo_(15)~ⅥO_(16))_2], nH_2O and K_(17)H_4 [Ln(P_2Mo~Ⅴ_4Mo_(13)~ⅥO_(61))_2], nH_2O(Ln=La, Pr, Sm, Yb). They were characterized by etementat anatyses, potentiometric titration, IR, UV, potarography, cyclic vottammetry, X-ray photoelectron spectra, X-ray powder diffraction, thermat analyses and ESR. The results show that the properties of these heteropoty btues are different from those of heteropoty blues with saturated Dawson structure and other tacunary series. They are more stabte than their parent heteropoty acids in aqueous sotution and have the abitity of anti-base decomposition.展开更多
The 1991 Booker Prize--winning novelist Ben Okri, while traveling in the Deep South after Barack Obama＇s victory in the November 2008 presidential election, wrote that Elvis Presley was a lingering deity in the city ...The 1991 Booker Prize--winning novelist Ben Okri, while traveling in the Deep South after Barack Obama＇s victory in the November 2008 presidential election, wrote that Elvis Presley was a lingering deity in the city of Memphis. The images of Elvis Presley, who earned the sobriquet ＂King of Rock＂ early in his career, and that of B. B. King, the exemplar extraordinaire of the Blues, are ubiquitous in the city of Memphis, which may be regarded as a metonym for the Blues and Rock ＇n Roll. The byline for the city of Memphis is, ＂Home of the Blues, Birthplace of Rock ＇n Roll＂, and this fact announces itself to the visitor as soon as he/she enters the arrivals concourse of the Memphis International Airport. As one proceeds towards the baggage claims area, the images which saturate the walkway create an aura that is redolent of the city＇s vibrant Rock ＇n Roll era. Drawing on Foucault＇s notion of heterotopias, as well as Jakobson＇s work on metonymy, this paper explores the hybrid musical spatiality of the city of Memphis and its environs, as well as its iconic status in the evolution of Rock ＇n Roll which was engendered by the Blues.展开更多
Chinese from all walks of life face the bite of inflation as the country’s consumer price index(CPI) soars DATA of the National Bureau of Statistics (NBS) show the country’s consumer price index(CPI),a broad measure...Chinese from all walks of life face the bite of inflation as the country’s consumer price index(CPI) soars DATA of the National Bureau of Statistics (NBS) show the country’s consumer price index(CPI),a broad measure of inflation, grew 5.3 percent in April,after recording a 32-month-high growth of 5.4 percent in展开更多
LIKE Christmas in the West, Chinese New Year, or Spring Festival, remains the most important social and economic holiday in China. But a survey conducted by Horizon Key Research at the end of 2012. two months before C...LIKE Christmas in the West, Chinese New Year, or Spring Festival, remains the most important social and economic holiday in China. But a survey conducted by Horizon Key Research at the end of 2012. two months before Chinese New Year, which fell on Febru- ary 10 this year. indicated that over 70 percent of young people in China feel stressed about the celebration. Due to a clash between centuries-old traditions and modern life. China＇s young people have increas- ingly complex feelings about Spring Festival, and now observe and spend the holiday in a very different man- her than previous generations.展开更多
For eight kinds of acidic potassium salts of hetcropoly blues which have not been reported in literature,the isomeri/.ation reaction in solution for these two-and four-electron hcteropoly blue solids were investigated...For eight kinds of acidic potassium salts of hetcropoly blues which have not been reported in literature,the isomeri/.ation reaction in solution for these two-and four-electron hcteropoly blue solids were investigated by means of polarograms,cyclic voltammetry,31P NMR and X-ray diffraction methods.The heteropolynier of PMo12 and AsMo12 converte to their β-isomers during isomerization reaction which were found to have antiacidolysis property.展开更多
Lithium-ion batteries(LIBs)have dominated the portable electronic and electrochemical energy markets since their commercialisation,whose high cost and lithium scarcity have prompted the development of other alkali-ion...Lithium-ion batteries(LIBs)have dominated the portable electronic and electrochemical energy markets since their commercialisation,whose high cost and lithium scarcity have prompted the development of other alkali-ion batteries(AIBs)including sodium-ion batteries(SIBs)and potassium-ion batteries(PIBs).Owing to larger ion sizes of Na^(+)and K^(+)compared with Li^(+),nanocomposites with excellent crystallinity orientation and well-developed porosity show unprecedented potential for advanced lithium/sodium/potassium storage.With enticing open rigid framework structures,Prussian blue analogues(PBAs)remain promising self-sacrificial templates for the preparation of various nanocomposites,whose appeal originates from the well-retained porous structures and exceptional electrochemical activities after thermal decomposition.This review focuses on the recent progress of PBA-derived nanocomposites from their fabrication,lithium/sodium/potassium storage mechanism,and applications in AIBs(LIBs,SIBs,and PIBs).To distinguish various PBA derivatives,the working mechanism and applications of PBA-templated metal oxides,metal chalcogenides,metal phosphides,and other nanocomposites are systematically evaluated,facilitating the establishment of a structure–activity correlation for these materials.Based on the fruitful achievements of PBA-derived nanocomposites,perspectives for their future development are envisioned,aiming to narrow down the gap between laboratory study and industrial reality.展开更多
Report highlights job fears sweeping China unemployment fears are rising across China amid the worsening global financial crisis, according to a recent report. The Society Blue Paper,
China’s KTV industry could shrink as a result of rising costs Arise in karaoke club copyright charges could cause major ripples in China’s booming KTV industry.In early August 2008, China Audio-Video Copyright Assoc...China’s KTV industry could shrink as a result of rising costs Arise in karaoke club copyright charges could cause major ripples in China’s booming KTV industry.In early August 2008, China Audio-Video Copyright Association(CAVCA) publicized new karaoke charges across China, with Shanghai topping the charge rates at 11.1 yuan ($1.6) per day for each karaoke room.展开更多
This paper studies relationships between the best linear unbiased estimators （BLUEs） of an estimable parametric functions Kβunder the Gauss-Markov model {y, Xβ, σ^2]E} and its misspecified model {y, X0β,σ^2∑0}...This paper studies relationships between the best linear unbiased estimators （BLUEs） of an estimable parametric functions Kβunder the Gauss-Markov model {y, Xβ, σ^2]E} and its misspecified model {y, X0β,σ^2∑0}. In addition, relationships between BLUEs under a restricted Gauss Markov model and its misspecified model are also investigated.展开更多
In Jason Robert Browns award-winning musical,a relationship is explored from its rapturous beginning to its sad aftermath.Recently adapted into an Anna Kendrick-starring film,Urban Aphrodite brings The Last Five Years...In Jason Robert Browns award-winning musical,a relationship is explored from its rapturous beginning to its sad aftermath.Recently adapted into an Anna Kendrick-starring film,Urban Aphrodite brings The Last Five Years to Jiadu Theatre from April 9-19.展开更多
For the porous‐membrane‐based osmotic energy generator,the potential synergistic enhancement mechanism of various key parameters is still controversial,especially because optimizing the trade‐off between permeabili...For the porous‐membrane‐based osmotic energy generator,the potential synergistic enhancement mechanism of various key parameters is still controversial,especially because optimizing the trade‐off between permeability and selectivity is still a challenge.Here,to construct a permeability and selectivity synergistically enhanced osmotic energy generator,the twodimensional porous membranes with tunable charge density are prepared by inserting sulfonated polyether sulfone into graphene oxide.Influences of charge density and pore size on the ion transport are explored,and the ionic behaviors in the channel are calculated by numerical simulations.The mechanism of ion transport in the process is studied in depth,and the fundamental principles of energy conversion are revealed.The results demonstrate that charge density and pore size should be matched to construct the optimal ion channel.This collaborative enhancement strategy of permeability and selectivity has significantly improved the output power in osmotic energy generation;compared to the pure graphene oxide membrane,the composite membrane presents almost 20 times improvement.展开更多
Due to the non-targeted release and low solubility of anti-gastric cancer agent,apatinib(Apa),a first-line drug with long-term usage in a high dosage often induces multi-drug resistance and causes serious side effects...Due to the non-targeted release and low solubility of anti-gastric cancer agent,apatinib(Apa),a first-line drug with long-term usage in a high dosage often induces multi-drug resistance and causes serious side effects.In order to avoid these drawbacks,lipid-film-coated Prussian blue nanoparticles(PB NPs)with hyaluronan(HA)modification was used for Apa loading to improve its solubility and targeting ability.Furthermore,anti-tumor compound of gamabufotalin(CS-6)was selected as a partner of Apawith reducing dosage for combinational gastric therapy.Thus,HA-Apa-Lip@PB-CS-6 NPs were constructed to synchronously transport the two drugs into tumor tissue.In vitro assay indicated that HA-Apa-Lip@PB-CS-6 NPs can synergistically inhibit proliferation and invasion/metastasis of BGC-823 cells via downregulating vascular endothelial growth factor receptor(VEGFR)and matrix metalloproteinase-9(MMP-9).In vivo assay demonstrated strongest anti-tumor growth and liver metastasis of HA-Apa-Lip@PB-CS-6 NPs administration in BGC-823 cells-bearing mice compared with other groups due to the excellent penetration in tumor tissues and outstanding synergistic effects.In summary,we have successfully developed a new nanocomplexes for synchronous Apa/CS-6 delivery and synergistic gastric cancer(GC)therapy.展开更多
文摘The Bluest Eye is Toni Morrison’s first novel.After its publication,it receives many criticisms.This article aims to ana lyze Pecola and Claudia’s understandings about black culture,then to clarify that different interpretations of the very name"the bluest eye"lead to different fates.With different visions of the black heritage,Pecola and Claudia have different perception of the world and thus have widely divergent outcomes in the painful circumstances.
文摘The present paper reports eight heteropoty blues of double 2:17 motybdophosphates tanthanide comptexes with tacunary Dawson structure, i.e., K_(17)H_2[Ln(P_2Mo_2~ⅤMo_(15)~ⅥO_(16))_2], nH_2O and K_(17)H_4 [Ln(P_2Mo~Ⅴ_4Mo_(13)~ⅥO_(61))_2], nH_2O(Ln=La, Pr, Sm, Yb). They were characterized by etementat anatyses, potentiometric titration, IR, UV, potarography, cyclic vottammetry, X-ray photoelectron spectra, X-ray powder diffraction, thermat analyses and ESR. The results show that the properties of these heteropoty btues are different from those of heteropoty blues with saturated Dawson structure and other tacunary series. They are more stabte than their parent heteropoty acids in aqueous sotution and have the abitity of anti-base decomposition.
文摘The 1991 Booker Prize--winning novelist Ben Okri, while traveling in the Deep South after Barack Obama＇s victory in the November 2008 presidential election, wrote that Elvis Presley was a lingering deity in the city of Memphis. The images of Elvis Presley, who earned the sobriquet ＂King of Rock＂ early in his career, and that of B. B. King, the exemplar extraordinaire of the Blues, are ubiquitous in the city of Memphis, which may be regarded as a metonym for the Blues and Rock ＇n Roll. The byline for the city of Memphis is, ＂Home of the Blues, Birthplace of Rock ＇n Roll＂, and this fact announces itself to the visitor as soon as he/she enters the arrivals concourse of the Memphis International Airport. As one proceeds towards the baggage claims area, the images which saturate the walkway create an aura that is redolent of the city＇s vibrant Rock ＇n Roll era. Drawing on Foucault＇s notion of heterotopias, as well as Jakobson＇s work on metonymy, this paper explores the hybrid musical spatiality of the city of Memphis and its environs, as well as its iconic status in the evolution of Rock ＇n Roll which was engendered by the Blues.
文摘Chinese from all walks of life face the bite of inflation as the country’s consumer price index(CPI) soars DATA of the National Bureau of Statistics (NBS) show the country’s consumer price index(CPI),a broad measure of inflation, grew 5.3 percent in April,after recording a 32-month-high growth of 5.4 percent in
文摘LIKE Christmas in the West, Chinese New Year, or Spring Festival, remains the most important social and economic holiday in China. But a survey conducted by Horizon Key Research at the end of 2012. two months before Chinese New Year, which fell on Febru- ary 10 this year. indicated that over 70 percent of young people in China feel stressed about the celebration. Due to a clash between centuries-old traditions and modern life. China＇s young people have increas- ingly complex feelings about Spring Festival, and now observe and spend the holiday in a very different man- her than previous generations.
文摘For eight kinds of acidic potassium salts of hetcropoly blues which have not been reported in literature,the isomeri/.ation reaction in solution for these two-and four-electron hcteropoly blue solids were investigated by means of polarograms,cyclic voltammetry,31P NMR and X-ray diffraction methods.The heteropolynier of PMo12 and AsMo12 converte to their β-isomers during isomerization reaction which were found to have antiacidolysis property.
基金financial support from the Special Funds for the Cultivation of Guangdong College Students’Scientific and Technological Innovation(“Climbing Program”Special Funds,pdjh2023b0145)the Scientific Research Innovation Project of Graduate School of South China Normal University(2024KYLX047)financial support from the Australian Research Council,Centre for Materials Science,Queensland University of Technology.
文摘Lithium-ion batteries(LIBs)have dominated the portable electronic and electrochemical energy markets since their commercialisation,whose high cost and lithium scarcity have prompted the development of other alkali-ion batteries(AIBs)including sodium-ion batteries(SIBs)and potassium-ion batteries(PIBs).Owing to larger ion sizes of Na^(+)and K^(+)compared with Li^(+),nanocomposites with excellent crystallinity orientation and well-developed porosity show unprecedented potential for advanced lithium/sodium/potassium storage.With enticing open rigid framework structures,Prussian blue analogues(PBAs)remain promising self-sacrificial templates for the preparation of various nanocomposites,whose appeal originates from the well-retained porous structures and exceptional electrochemical activities after thermal decomposition.This review focuses on the recent progress of PBA-derived nanocomposites from their fabrication,lithium/sodium/potassium storage mechanism,and applications in AIBs(LIBs,SIBs,and PIBs).To distinguish various PBA derivatives,the working mechanism and applications of PBA-templated metal oxides,metal chalcogenides,metal phosphides,and other nanocomposites are systematically evaluated,facilitating the establishment of a structure–activity correlation for these materials.Based on the fruitful achievements of PBA-derived nanocomposites,perspectives for their future development are envisioned,aiming to narrow down the gap between laboratory study and industrial reality.
文摘Report highlights job fears sweeping China unemployment fears are rising across China amid the worsening global financial crisis, according to a recent report. The Society Blue Paper,
文摘China’s KTV industry could shrink as a result of rising costs Arise in karaoke club copyright charges could cause major ripples in China’s booming KTV industry.In early August 2008, China Audio-Video Copyright Association(CAVCA) publicized new karaoke charges across China, with Shanghai topping the charge rates at 11.1 yuan ($1.6) per day for each karaoke room.
基金Supported in part by National Natural Science Foundation of China (Grant No.70871073)
文摘This paper studies relationships between the best linear unbiased estimators （BLUEs） of an estimable parametric functions Kβunder the Gauss-Markov model {y, Xβ, σ^2]E} and its misspecified model {y, X0β,σ^2∑0}. In addition, relationships between BLUEs under a restricted Gauss Markov model and its misspecified model are also investigated.
文摘In Jason Robert Browns award-winning musical,a relationship is explored from its rapturous beginning to its sad aftermath.Recently adapted into an Anna Kendrick-starring film,Urban Aphrodite brings The Last Five Years to Jiadu Theatre from April 9-19.
基金Natural Science Foundation of Jilin Province,Grant/Award Number:YDZJ202101ZYTS002National Natural Science Foundation of China,Grant/Award Number:52003099+1 种基金Capital Construction Fund of Jilin Province,Grant/Award Number:2021C039‐1Fundamental Research Funds for the Central Universities。
文摘For the porous‐membrane‐based osmotic energy generator,the potential synergistic enhancement mechanism of various key parameters is still controversial,especially because optimizing the trade‐off between permeability and selectivity is still a challenge.Here,to construct a permeability and selectivity synergistically enhanced osmotic energy generator,the twodimensional porous membranes with tunable charge density are prepared by inserting sulfonated polyether sulfone into graphene oxide.Influences of charge density and pore size on the ion transport are explored,and the ionic behaviors in the channel are calculated by numerical simulations.The mechanism of ion transport in the process is studied in depth,and the fundamental principles of energy conversion are revealed.The results demonstrate that charge density and pore size should be matched to construct the optimal ion channel.This collaborative enhancement strategy of permeability and selectivity has significantly improved the output power in osmotic energy generation;compared to the pure graphene oxide membrane,the composite membrane presents almost 20 times improvement.
基金supported by Changsha Municipal Natural Science Foundation(Grant No.:kq2014265),the Construction Program of Hunan's innovative Province(CN)-High-tech Industry Science and Technology Innovation Leading Project(Project No.:2020SK2002)the Natural Science Foundation of Hunan Province(Grant No.:2023JJ40130)+1 种基金Postgraduate Scientific Research Innovation Project of Hunan Province(Project No.:CX20230317)the Changsha Platform and Talent Plan(kq2203002).
文摘Due to the non-targeted release and low solubility of anti-gastric cancer agent,apatinib(Apa),a first-line drug with long-term usage in a high dosage often induces multi-drug resistance and causes serious side effects.In order to avoid these drawbacks,lipid-film-coated Prussian blue nanoparticles(PB NPs)with hyaluronan(HA)modification was used for Apa loading to improve its solubility and targeting ability.Furthermore,anti-tumor compound of gamabufotalin(CS-6)was selected as a partner of Apawith reducing dosage for combinational gastric therapy.Thus,HA-Apa-Lip@PB-CS-6 NPs were constructed to synchronously transport the two drugs into tumor tissue.In vitro assay indicated that HA-Apa-Lip@PB-CS-6 NPs can synergistically inhibit proliferation and invasion/metastasis of BGC-823 cells via downregulating vascular endothelial growth factor receptor(VEGFR)and matrix metalloproteinase-9(MMP-9).In vivo assay demonstrated strongest anti-tumor growth and liver metastasis of HA-Apa-Lip@PB-CS-6 NPs administration in BGC-823 cells-bearing mice compared with other groups due to the excellent penetration in tumor tissues and outstanding synergistic effects.In summary,we have successfully developed a new nanocomplexes for synchronous Apa/CS-6 delivery and synergistic gastric cancer(GC)therapy.
