On the basis of analyzing heat displacements produced in thin ring and long cylinder, the calculating formulas of heat displacements of bearing components is infered in this paper by considering heat displacement effe...On the basis of analyzing heat displacements produced in thin ring and long cylinder, the calculating formulas of heat displacements of bearing components is infered in this paper by considering heat displacement effect of spindle and bearing house. The results have certain meaning for design and application of high speed angular contact ball bearings.展开更多
In our laboratory, FISH technology has been applied in the detection of alien chromosome or large alien chromosome fragments (for instance, the rye chromosome fragments in translocation line of wheat). But for investi...In our laboratory, FISH technology has been applied in the detection of alien chromosome or large alien chromosome fragments (for instance, the rye chromosome fragments in translocation line of wheat). But for investigating translocations involving small segment of alien chromosomes, DNA fragment analysis based technologies such as RAPD and AFLP have been used. The latter methods also have been applied to pbtain molecular markers linked to specific genes (our focus was the Rf3 restorer gene of G type CMS of wheat). An alternative method for finding new molecular markers is subtractive hybridization. Our aim in using this method is to obtain high copy sequences, which are specific to rye.展开更多
After surveying a set of bronze vessels such as long-necked and shouldered Zen, Lei, Bu and etc andanalyzing the shape Taotie design, the head of sacrificial animals, ridge of the bronze vessels. The Authorof this pap...After surveying a set of bronze vessels such as long-necked and shouldered Zen, Lei, Bu and etc andanalyzing the shape Taotie design, the head of sacrificial animals, ridge of the bronze vessels. The Authorof this paper found that bronze vessels of Late Shan dynasty unearthed from Hunan Province and HubeiProvince in the middle Yantze river valley area are derived from the bronze vessels of Mid-Shan of CentralPlain with regard to shaping, decoration idealism and technique tradition. Though they maintained certainrelationship with the contemporary bronze vessels of yinxu, the Bronzes from Mid-Yantze river area havetheir own characteristics different from those of Yinxu and have a distinct evolution trajectory of their own.It is safe to say that they are indigenous to Mid-Yantze river area and are the products of regional development.展开更多
文摘On the basis of analyzing heat displacements produced in thin ring and long cylinder, the calculating formulas of heat displacements of bearing components is infered in this paper by considering heat displacement effect of spindle and bearing house. The results have certain meaning for design and application of high speed angular contact ball bearings.
文摘In our laboratory, FISH technology has been applied in the detection of alien chromosome or large alien chromosome fragments (for instance, the rye chromosome fragments in translocation line of wheat). But for investigating translocations involving small segment of alien chromosomes, DNA fragment analysis based technologies such as RAPD and AFLP have been used. The latter methods also have been applied to pbtain molecular markers linked to specific genes (our focus was the Rf3 restorer gene of G type CMS of wheat). An alternative method for finding new molecular markers is subtractive hybridization. Our aim in using this method is to obtain high copy sequences, which are specific to rye.
文摘After surveying a set of bronze vessels such as long-necked and shouldered Zen, Lei, Bu and etc andanalyzing the shape Taotie design, the head of sacrificial animals, ridge of the bronze vessels. The Authorof this paper found that bronze vessels of Late Shan dynasty unearthed from Hunan Province and HubeiProvince in the middle Yantze river valley area are derived from the bronze vessels of Mid-Shan of CentralPlain with regard to shaping, decoration idealism and technique tradition. Though they maintained certainrelationship with the contemporary bronze vessels of yinxu, the Bronzes from Mid-Yantze river area havetheir own characteristics different from those of Yinxu and have a distinct evolution trajectory of their own.It is safe to say that they are indigenous to Mid-Yantze river area and are the products of regional development.
