The paper is entitled“Coinage in Akan Among Senior High School Students”.It aims to investigate coinage used by senior high school students.This paper also investigates other word formation processes involved in coi...The paper is entitled“Coinage in Akan Among Senior High School Students”.It aims to investigate coinage used by senior high school students.This paper also investigates other word formation processes involved in coined words and the reasons why the students use them in their everyday conversation.The collected data from direct elicitation and interviews were categorized into the types of coined words and analyzed in terms of their formation processes by using a method of analysis based on theories as proposed by Yule(1985),Potter(1975),O’Grady and Guzman(1996),and Gerber(1968).The findings show that there are 10 groups of word formation processes in this study.This paper presents a qualitative analysis of the findings of a sociolinguistic survey geared towards coinage as used by students of both Osei Tutu Senior High School and Bisease Community/Senior High School speech communities.It is also imperative to state that these two schools are located in typical Akan speaking communities.Osei Tutu Senior High School,situated in Akropong,in the Ashanti region of Ghana,is a single sex school(boys’school)and Bisease Community/Senior High School on the other hand is situated in Ajumako-Bisease in the central region.The latter is a mixed school.展开更多
Bottom-up constructing all-metal functional materials is challenging,because the metal clusters are prone to lose their original structures during coalensence.In this work,we report that closed-shell coinage metal sup...Bottom-up constructing all-metal functional materials is challenging,because the metal clusters are prone to lose their original structures during coalensence.In this work,we report that closed-shell coinage metal superatoms can achieve direct chemical bonding without losing their electronic properties.The reason is that the supermolecule formed by two superatoms has the same number of bonding and anti-bonding supermolecular orbitals,in which the bonding orbitals contribute to bonding and the antibonding orbitals with anti-phase orbitals delocalized over each monomer to maintain the individual geometric and electronic structural properties.Further analysis indicates the interactions between two superatoms are too weak to break the structure of monomers,which is confirmed by the first-principles molecular dynamics simulations.With these superatoms as the basic units,a series of robust one-dimensional and two-dimensional nanostructures are fabricated.Our findings provide a general strategy to take advantage of superatoms in regulating bonding compared to natural atoms,which paves the way for the bottom-up design of materials with collective properties.展开更多
The syntheses and structures of a novel series of polynuclear coinage metal cluster compounds are discussed. The most fascinating structural characteristic of the Au-Ag alloy clusters with Au_18Ag_19 and Au_18Ag_19 co...The syntheses and structures of a novel series of polynuclear coinage metal cluster compounds are discussed. The most fascinating structural characteristic of the Au-Ag alloy clusters with Au_18Ag_19 and Au_18Ag_19 cores and phosphine ligands, which were prepared by the reduction of mononuclear coinage metal complexes R3PAuX and R3PAgX with NaBH4 in organic solution, is their construction from 13-atom gold-centred icosahedral Au_7Ag_6 building blocks. The structures of the polynuclear coinage metal clusters with R2dtc ligands are variable with either unlimited linear chain or triangular M3 units.展开更多
It is generally acknowledged that language-change is universal,continuous,and,to very considerable extent,regular.The universality and continuity of the process of language-change is noted greatly.All living languages...It is generally acknowledged that language-change is universal,continuous,and,to very considerable extent,regular.The universality and continuity of the process of language-change is noted greatly.All living languages are subject to it.The core of language-change is lexical,and a language ' s vocabulary change proves to be more revolutionary for the language ' s slow evolution.展开更多
文摘The paper is entitled“Coinage in Akan Among Senior High School Students”.It aims to investigate coinage used by senior high school students.This paper also investigates other word formation processes involved in coined words and the reasons why the students use them in their everyday conversation.The collected data from direct elicitation and interviews were categorized into the types of coined words and analyzed in terms of their formation processes by using a method of analysis based on theories as proposed by Yule(1985),Potter(1975),O’Grady and Guzman(1996),and Gerber(1968).The findings show that there are 10 groups of word formation processes in this study.This paper presents a qualitative analysis of the findings of a sociolinguistic survey geared towards coinage as used by students of both Osei Tutu Senior High School and Bisease Community/Senior High School speech communities.It is also imperative to state that these two schools are located in typical Akan speaking communities.Osei Tutu Senior High School,situated in Akropong,in the Ashanti region of Ghana,is a single sex school(boys’school)and Bisease Community/Senior High School on the other hand is situated in Ajumako-Bisease in the central region.The latter is a mixed school.
基金the National Science Foundation of China(Nos.11974136 and 11674123).
文摘Bottom-up constructing all-metal functional materials is challenging,because the metal clusters are prone to lose their original structures during coalensence.In this work,we report that closed-shell coinage metal superatoms can achieve direct chemical bonding without losing their electronic properties.The reason is that the supermolecule formed by two superatoms has the same number of bonding and anti-bonding supermolecular orbitals,in which the bonding orbitals contribute to bonding and the antibonding orbitals with anti-phase orbitals delocalized over each monomer to maintain the individual geometric and electronic structural properties.Further analysis indicates the interactions between two superatoms are too weak to break the structure of monomers,which is confirmed by the first-principles molecular dynamics simulations.With these superatoms as the basic units,a series of robust one-dimensional and two-dimensional nanostructures are fabricated.Our findings provide a general strategy to take advantage of superatoms in regulating bonding compared to natural atoms,which paves the way for the bottom-up design of materials with collective properties.
文摘The syntheses and structures of a novel series of polynuclear coinage metal cluster compounds are discussed. The most fascinating structural characteristic of the Au-Ag alloy clusters with Au_18Ag_19 and Au_18Ag_19 cores and phosphine ligands, which were prepared by the reduction of mononuclear coinage metal complexes R3PAuX and R3PAgX with NaBH4 in organic solution, is their construction from 13-atom gold-centred icosahedral Au_7Ag_6 building blocks. The structures of the polynuclear coinage metal clusters with R2dtc ligands are variable with either unlimited linear chain or triangular M3 units.
文摘It is generally acknowledged that language-change is universal,continuous,and,to very considerable extent,regular.The universality and continuity of the process of language-change is noted greatly.All living languages are subject to it.The core of language-change is lexical,and a language ' s vocabulary change proves to be more revolutionary for the language ' s slow evolution.
