In this paper,experimental findings concerning the kinetics of hematopoietic reconstitution are compared to corresponding clinical data.Although not clearly apparent,the transplantation practice seems to confirm the b...In this paper,experimental findings concerning the kinetics of hematopoietic reconstitution are compared to corresponding clinical data.Although not clearly apparent,the transplantation practice seems to confirm the basic proposals of experimental hematology concerning hematopoietic reconstitution resulting from successive waves of repopulation stemming from different subpopulations of progenitor and stem cells.One of the "f irst rate" parameters in clinical transplantations in hematology;i.e.the CD34+ positive cell dose,has been discussed with respect to the functional heterogeneity and variability of cell populations endowed by expression of CD34.This parameter is useful only if the relative proportion of stem and progenitor cells in the CD34+ cell population is more or less maintained in a series of patients or donors.This proportion could vary with respect to the source,pathology,treatment,processing procedure,the graft ex vivo treatment and so on.Therefore,a universal dose of CD34+ cells cannot be def ined.In addition,to avoid further confusion,the CD34+ cells should not be named "stem cells" or "progenitor cells" since these denominations only concern functionally characterized cell entities.展开更多
There is usually source effect in the field work of controlled-source audio-frequency magnetotelluric method.Source effect is a thorny problem during field working,data processing and interpretation.Therefore,it is ve...There is usually source effect in the field work of controlled-source audio-frequency magnetotelluric method.Source effect is a thorny problem during field working,data processing and interpretation.Therefore,it is very important for the results of field prospecting to model source effect and summarize its influence rules.Based on the previous research,the authors use 3D finite difference method to simulate the electromagnetic field and set different anomaly situation to study the source effect in near-field measurement,then conclude the influence rules of source effect.Simulations provide the reference for the actual field work and data processing to correct the influence of source effect,so the information of the underground will be more approaching to the real.展开更多
The mass spectra of cluster ions (NH3)nH2=with n<4 were measured for the first time using a MPI mass spectrometer. The structures of the cluster ions NH5+ and (NH3)2H2+ were calculated using GAUSSIAN-94 package, an...The mass spectra of cluster ions (NH3)nH2=with n<4 were measured for the first time using a MPI mass spectrometer. The structures of the cluster ions NH5+ and (NH3)2H2+ were calculated using GAUSSIAN-94 package, and stable structures for both of them were found.展开更多
The finite element method has been considered as one of the most significant engineering advances of the twentieth century. This computational methodology has made substantial impact on many fields in science and also...The finite element method has been considered as one of the most significant engineering advances of the twentieth century. This computational methodology has made substantial impact on many fields in science and also has profoundly changed engineering design procedures and practice. This paper, mainly froln a solid mechanics perspective, and the Swansea viewpoint in particular, describes very briefly the origin of the methodology, then summaries selected milestones of the technical developments that have taken place over the last fifty years and illustrates their application to some practical engineering problems.展开更多
"Miranda Saga" is targeted as an intiation stroy. The typical general plot mode distinguishes this genre from other literary forms.Predicted on the archetypal theories, Rui Yuping summarizes the plot mode of..."Miranda Saga" is targeted as an intiation stroy. The typical general plot mode distinguishes this genre from other literary forms.Predicted on the archetypal theories, Rui Yuping summarizes the plot mode of initiation stories as follows: innocence -disillusionment -epiphany, which has been successfully applied to some classic novels, such as Mark Twain's Adventures of Huckleberry Finn and J.D.Salinger's The Catcher in the Rye, etc. Porter's "Miranda Saga" follows this general mode thus demonstrating it as a good illustration ofinitiation stories. In the first place, it extends the application and content of initiation stories. In the second place, it provides a new point of view for the study of Porter.展开更多
The Jiachala Formatiom is a new lithostratigraphic unit set up in this paper. This is the first report on the Paleogene marine sequences and microfaunas in Gyangze to the southern side of the Yarlung-Zangbo suture zon...The Jiachala Formatiom is a new lithostratigraphic unit set up in this paper. This is the first report on the Paleogene marine sequences and microfaunas in Gyangze to the southern side of the Yarlung-Zangbo suture zone. On the basis of fossil abundance, species diversity, dominant species and first and last occurrences of key species, three dinoflagellate assemblages and three polynological assemblages were recognized in the Jiachala Formatiom. They are in ascending order as follows: Apectodinium quinquelatum-Apectodinium hyperacanthum, Cannin- gia chinensis-Palaeoperidinium pyrophorum and Cymatiosphaera reticulosa-Samlandia chla- mydophora dinoflagellate assemblages, and Arliaceoipollenites baculatus-Anacolosidites sub- trudens, Aglaoreidia cyclops-Pinuspollenites microinsigis, and Elaeangnacites asper-Ilexpol- lenites iliacus polynological Assemblages. According to the assemblages, the age of the Jiachala Formation is referred to Paleocene-early Eocene. The preliminary study on the Jiachala Forma- tion shows that this group of Paleogene deposits accumulated in an underfilled peripheral fore- land basin which was in response to the load of the crust thickening resulted from the Asia-India collision. The stratigraphic evidences provided by the evolution of foreland basin indicate that the India-Asia initional collision should occure near the Cretaceous/Paleogene boundary. The de- velopment and evolution of the southern Tibet foreland basin was under the control of the stress field from the subduct-collision between India and Asia and the structure pattern of the basement. The withering of Tethys Sea might occur after early Eocene in the Gyangze basin and should be after Priabonian of late Eocene in southern Tibet.展开更多
Shenzhen Batian Ecological Engineering Co.,Ltd.(Batian,SZ:002170)launchedthe initially public offering(IPO)of 24 million shares on September 12th,at aprice of RMB10.16 per share in Shenzhen Stock Exchange,for RMB240 m...Shenzhen Batian Ecological Engineering Co.,Ltd.(Batian,SZ:002170)launchedthe initially public offering(IPO)of 24 million shares on September 12th,at aprice of RMB10.16 per share in Shenzhen Stock Exchange,for RMB240 million.Batian,located in Shenzhen,Guangdong province,is engaged in the R & D,production and sales of inorganic compound fertilizers,organic compound fer-tilizers and controlled-release fertilizers.The capacity and the output of com-展开更多
文摘In this paper,experimental findings concerning the kinetics of hematopoietic reconstitution are compared to corresponding clinical data.Although not clearly apparent,the transplantation practice seems to confirm the basic proposals of experimental hematology concerning hematopoietic reconstitution resulting from successive waves of repopulation stemming from different subpopulations of progenitor and stem cells.One of the "f irst rate" parameters in clinical transplantations in hematology;i.e.the CD34+ positive cell dose,has been discussed with respect to the functional heterogeneity and variability of cell populations endowed by expression of CD34.This parameter is useful only if the relative proportion of stem and progenitor cells in the CD34+ cell population is more or less maintained in a series of patients or donors.This proportion could vary with respect to the source,pathology,treatment,processing procedure,the graft ex vivo treatment and so on.Therefore,a universal dose of CD34+ cells cannot be def ined.In addition,to avoid further confusion,the CD34+ cells should not be named "stem cells" or "progenitor cells" since these denominations only concern functionally characterized cell entities.
基金Supported by project of China Geological Survey(No.12120113098400)
文摘There is usually source effect in the field work of controlled-source audio-frequency magnetotelluric method.Source effect is a thorny problem during field working,data processing and interpretation.Therefore,it is very important for the results of field prospecting to model source effect and summarize its influence rules.Based on the previous research,the authors use 3D finite difference method to simulate the electromagnetic field and set different anomaly situation to study the source effect in near-field measurement,then conclude the influence rules of source effect.Simulations provide the reference for the actual field work and data processing to correct the influence of source effect,so the information of the underground will be more approaching to the real.
文摘The mass spectra of cluster ions (NH3)nH2=with n<4 were measured for the first time using a MPI mass spectrometer. The structures of the cluster ions NH5+ and (NH3)2H2+ were calculated using GAUSSIAN-94 package, and stable structures for both of them were found.
文摘The finite element method has been considered as one of the most significant engineering advances of the twentieth century. This computational methodology has made substantial impact on many fields in science and also has profoundly changed engineering design procedures and practice. This paper, mainly froln a solid mechanics perspective, and the Swansea viewpoint in particular, describes very briefly the origin of the methodology, then summaries selected milestones of the technical developments that have taken place over the last fifty years and illustrates their application to some practical engineering problems.
文摘"Miranda Saga" is targeted as an intiation stroy. The typical general plot mode distinguishes this genre from other literary forms.Predicted on the archetypal theories, Rui Yuping summarizes the plot mode of initiation stories as follows: innocence -disillusionment -epiphany, which has been successfully applied to some classic novels, such as Mark Twain's Adventures of Huckleberry Finn and J.D.Salinger's The Catcher in the Rye, etc. Porter's "Miranda Saga" follows this general mode thus demonstrating it as a good illustration ofinitiation stories. In the first place, it extends the application and content of initiation stories. In the second place, it provides a new point of view for the study of Porter.
文摘The Jiachala Formatiom is a new lithostratigraphic unit set up in this paper. This is the first report on the Paleogene marine sequences and microfaunas in Gyangze to the southern side of the Yarlung-Zangbo suture zone. On the basis of fossil abundance, species diversity, dominant species and first and last occurrences of key species, three dinoflagellate assemblages and three polynological assemblages were recognized in the Jiachala Formatiom. They are in ascending order as follows: Apectodinium quinquelatum-Apectodinium hyperacanthum, Cannin- gia chinensis-Palaeoperidinium pyrophorum and Cymatiosphaera reticulosa-Samlandia chla- mydophora dinoflagellate assemblages, and Arliaceoipollenites baculatus-Anacolosidites sub- trudens, Aglaoreidia cyclops-Pinuspollenites microinsigis, and Elaeangnacites asper-Ilexpol- lenites iliacus polynological Assemblages. According to the assemblages, the age of the Jiachala Formation is referred to Paleocene-early Eocene. The preliminary study on the Jiachala Forma- tion shows that this group of Paleogene deposits accumulated in an underfilled peripheral fore- land basin which was in response to the load of the crust thickening resulted from the Asia-India collision. The stratigraphic evidences provided by the evolution of foreland basin indicate that the India-Asia initional collision should occure near the Cretaceous/Paleogene boundary. The de- velopment and evolution of the southern Tibet foreland basin was under the control of the stress field from the subduct-collision between India and Asia and the structure pattern of the basement. The withering of Tethys Sea might occur after early Eocene in the Gyangze basin and should be after Priabonian of late Eocene in southern Tibet.
文摘Shenzhen Batian Ecological Engineering Co.,Ltd.(Batian,SZ:002170)launchedthe initially public offering(IPO)of 24 million shares on September 12th,at aprice of RMB10.16 per share in Shenzhen Stock Exchange,for RMB240 million.Batian,located in Shenzhen,Guangdong province,is engaged in the R & D,production and sales of inorganic compound fertilizers,organic compound fer-tilizers and controlled-release fertilizers.The capacity and the output of com-
