An intergeneric artificial hybridization was conducted between Cunninghamia R. Br. and Cryptomeria D.Don The results are as follows:1. A considerable number of hybrid seeds shed from 76 pollinated cones were ...An intergeneric artificial hybridization was conducted between Cunninghamia R. Br. and Cryptomeria D.Don The results are as follows:1. A considerable number of hybrid seeds shed from 76 pollinated cones were empty and a total of 628 looks plump. Soft X ray radiographs showed that, still and all, a majority of the “plump" seeds were embryoless (597, 95.6%) whereas some were partially developed (17,2.7%) and only a few were really full (14, 2.2%). 2. Germination test showed that all of the radiographed hybrid seeds with fully developed embryos were germinable whereas those with partially developed embryos were ungerminable. 3. Physiologically, the growth rate of hypocotyl, the date for shedding of seed coat and spreading of cotyledons, the elongation of epicotyl, and the branching of shoot of the 11 month old seedlings showed a tendency to fall behind those of the female parent; morphologically, the 11 month old hybrid seedlings with linear leaves appeared rather short, slender and weak, whereas the seedlings of the female parents with linear_lanceolate leaves appeared rather tall, stout and strong. 4. It is considered that the hybrid may be true and the crossability reveals a close phylogenetic affinity of Cunninghamia with Cryptomeria.展开更多
According to tectonic position and mineral inclusions, supply resource in western Qaidamu basin is di- vided into the front of Aerjinshan mountain and the front of Qimantageshan mountain. The former is mainly composed...According to tectonic position and mineral inclusions, supply resource in western Qaidamu basin is di- vided into the front of Aerjinshan mountain and the front of Qimantageshan mountain. The former is mainly composed of zircon, garnet inclusions, indicating that its mother rocks are mainly metamorphic rocks. Gas and zircon, iron ore, carbon grain inclusions is common in the front of Qimantage mountain, indicating that its mother rock are mainly magmatite and mixed metamorphic rocks. The supply resource is abundant and tectonic movement is active in the joint of the two mountains. The western Qaidamu basin is further divided into 6 heavy mineral sub-regions according to their features of association and stable coefficient of heavy mineral. They are approximately corresponding to their sedimentary environment. Of the 6 sub-regions, the unstable region is corresponding to fluvial fan, middle stable re- gion is corresponding to river-alluvial plain-delta, stable region is corresponding to river-alluvial plain -delta-offshore. The fragment transported distance is presumed based on stable coefficient. In vertical, stable coefficient of heavy min- eral becomes small from Xiaganchai formation to Xiayoushashan formation, indicating that the supply resource be- came nearer and nearer.展开更多
In order to understand the current interface characteristics of wood-hybrid composites, this paper starts off from the concept of composite interface and general theory of interface form, then the inner-surface and mi...In order to understand the current interface characteristics of wood-hybrid composites, this paper starts off from the concept of composite interface and general theory of interface form, then the inner-surface and microstructure of wood and the interface characteristics of composites, such as wood- inorganic, wood- plastic and wood- metal made by electroless plating technique, are concluded and discussed in detail. Meanwhile, on the basis of that, some points of view about how to develop the wood-hybrid composites interface research in the future are also proposed.展开更多
New Zealand, as a nation, has been in existence for less than two cen- turies-whether one dates its assumption of sovereignty to the 1835 Declaration of Independence by the Confederation of United Tribes, the 1840 Tre...New Zealand, as a nation, has been in existence for less than two cen- turies-whether one dates its assumption of sovereignty to the 1835 Declaration of Independence by the Confederation of United Tribes, the 1840 Treaty of Waitangi between Maori and the British Crown, or its attainment of Dominion status in 1907. The question of a separate cultural identity for this post-colonial, multi-cultural country has therefore always been a complex one, and one which has had a strong influence on much of our artistic expression to date： particularly, perhaps because of its inherent tendency towards the self-analysis only really possible within language, literature. The fact that our most famous locally born writer to date, Katherine Mansfield, specialised in the short story has certainly helped to establish that as a vital genre here. This paper accordingly takes four successive anthologies of local short fiction--Frank Sargeson＇s Speaking for Ourselves （1945）, Michael Morris- sey＇s The New Fiction （1985）, Warwick Bennett and Patrick Hudson＇s Rutherford＇s Dreams （1995）, and Tina Shaw and Jack Ross＇s Myth of the twenty-firstCentury （2006）--and attempts to characterise their respective, overlapping visions of New Zealand identity by conducting a close reading of a representative story from each of them. The essay concludes with a call for a new anthology which might attempt to give expression to this series of gradual erosions of our initial cultural certainties into something more adequate to the realities of our place in the world, both geo- graphically and culturally.展开更多
文摘An intergeneric artificial hybridization was conducted between Cunninghamia R. Br. and Cryptomeria D.Don The results are as follows:1. A considerable number of hybrid seeds shed from 76 pollinated cones were empty and a total of 628 looks plump. Soft X ray radiographs showed that, still and all, a majority of the “plump" seeds were embryoless (597, 95.6%) whereas some were partially developed (17,2.7%) and only a few were really full (14, 2.2%). 2. Germination test showed that all of the radiographed hybrid seeds with fully developed embryos were germinable whereas those with partially developed embryos were ungerminable. 3. Physiologically, the growth rate of hypocotyl, the date for shedding of seed coat and spreading of cotyledons, the elongation of epicotyl, and the branching of shoot of the 11 month old seedlings showed a tendency to fall behind those of the female parent; morphologically, the 11 month old hybrid seedlings with linear leaves appeared rather short, slender and weak, whereas the seedlings of the female parents with linear_lanceolate leaves appeared rather tall, stout and strong. 4. It is considered that the hybrid may be true and the crossability reveals a close phylogenetic affinity of Cunninghamia with Cryptomeria.
基金System in research area Project/OF4534 supported by CUMT Science Foundation
文摘According to tectonic position and mineral inclusions, supply resource in western Qaidamu basin is di- vided into the front of Aerjinshan mountain and the front of Qimantageshan mountain. The former is mainly composed of zircon, garnet inclusions, indicating that its mother rocks are mainly metamorphic rocks. Gas and zircon, iron ore, carbon grain inclusions is common in the front of Qimantage mountain, indicating that its mother rock are mainly magmatite and mixed metamorphic rocks. The supply resource is abundant and tectonic movement is active in the joint of the two mountains. The western Qaidamu basin is further divided into 6 heavy mineral sub-regions according to their features of association and stable coefficient of heavy mineral. They are approximately corresponding to their sedimentary environment. Of the 6 sub-regions, the unstable region is corresponding to fluvial fan, middle stable re- gion is corresponding to river-alluvial plain-delta, stable region is corresponding to river-alluvial plain -delta-offshore. The fragment transported distance is presumed based on stable coefficient. In vertical, stable coefficient of heavy min- eral becomes small from Xiaganchai formation to Xiayoushashan formation, indicating that the supply resource be- came nearer and nearer.
基金Supported by the National Natural Science Foundation of China (Grant No.30070606)
文摘In order to understand the current interface characteristics of wood-hybrid composites, this paper starts off from the concept of composite interface and general theory of interface form, then the inner-surface and microstructure of wood and the interface characteristics of composites, such as wood- inorganic, wood- plastic and wood- metal made by electroless plating technique, are concluded and discussed in detail. Meanwhile, on the basis of that, some points of view about how to develop the wood-hybrid composites interface research in the future are also proposed.
文摘New Zealand, as a nation, has been in existence for less than two cen- turies-whether one dates its assumption of sovereignty to the 1835 Declaration of Independence by the Confederation of United Tribes, the 1840 Treaty of Waitangi between Maori and the British Crown, or its attainment of Dominion status in 1907. The question of a separate cultural identity for this post-colonial, multi-cultural country has therefore always been a complex one, and one which has had a strong influence on much of our artistic expression to date： particularly, perhaps because of its inherent tendency towards the self-analysis only really possible within language, literature. The fact that our most famous locally born writer to date, Katherine Mansfield, specialised in the short story has certainly helped to establish that as a vital genre here. This paper accordingly takes four successive anthologies of local short fiction--Frank Sargeson＇s Speaking for Ourselves （1945）, Michael Morris- sey＇s The New Fiction （1985）, Warwick Bennett and Patrick Hudson＇s Rutherford＇s Dreams （1995）, and Tina Shaw and Jack Ross＇s Myth of the twenty-firstCentury （2006）--and attempts to characterise their respective, overlapping visions of New Zealand identity by conducting a close reading of a representative story from each of them. The essay concludes with a call for a new anthology which might attempt to give expression to this series of gradual erosions of our initial cultural certainties into something more adequate to the realities of our place in the world, both geo- graphically and culturally.
