Objective:The aim of the research was to investigate the relationship between gastric cancer stage, prognosis and blood platelets count. Methods: Platelet (PLT) count was analyzed retrospectively in 203 patients with ...Objective:The aim of the research was to investigate the relationship between gastric cancer stage, prognosis and blood platelets count. Methods: Platelet (PLT) count was analyzed retrospectively in 203 patients with gastric cancer from 1998 to 2002. The survivals of gastric cancer were compared between normal PLT group and thrombocytosis group. Results: Among 203 cases, PLT increased in 21 cases. The average platelet counts of patients at different stages had statistically significant differences (P<0.01). The 3-and 5-year survivals in patients of thrombocytosis group were lower than those of the normal PLT group (P<0.01). Conclusion: Thrombocytosis in gastric cancers with advanced stage are common. And PLT count can be a prognostic indicator of survival in patients with gastric cancer undergoing gastrectomy.展开更多
AIM： To investigate the 152 cases of paragangliomas resected over the past 32 years in West China Hospital dinicopathologically.METHODS： All cases of paragangliomas diagnosed at the Department of Gastrointestinal Su...AIM： To investigate the 152 cases of paragangliomas resected over the past 32 years in West China Hospital dinicopathologically.METHODS： All cases of paragangliomas diagnosed at the Department of Gastrointestinal Surgery and Department of Pathology, West China Hospital, China were reviewed. The pathological documents were supplied by the Department of Pathology, West China Hospital, and other necessary data were extracted from the hospital records. The statistical analyses were performed by survival analysis （Kaplan-Meier method）, descriptive statistical analyses and Х^2 analysis.RESULTS： The neuroendocrine marker vimentin was found to be selectively expressed in the benign tumors, and there were significant differences in the expression of those markers in both benign and malignant tumors. The survival analysis revealed that survival correlated significantly with the malignancy, metastasis and nodal status.CONCLUSION： Vimentin may be useful in the differential diagnosis between malignant and benign tumors. The difference in the expression of this marker in the tumors could be a clue to the future clinical diagnosis. The malignancy, metastasis and the nodal status may predict the prognosis of this disease.展开更多
For the cloud computing system,combined wth the memory function and incomplete matching of the biological immune system,a formal modeling and analysis method of the cloud computing system survivability is proposed by ...For the cloud computing system,combined wth the memory function and incomplete matching of the biological immune system,a formal modeling and analysis method of the cloud computing system survivability is proposed by analyzing the survival situation of critical cloud services.First,on the basis of the SAIR(susceptible,active,infected,recovered)model,the SEIRS(susceptible,exposed,infected,recovered,susceptible)model and the vulnerability diffusion model of the distributed virtual system,the evolution state of the virus is divided into six types,and then the diffusion rules of the virus in the service domain of the cloud computing system and the propagation rules between service domains are analyzee.Finally,on the basis of Bio-PEPA(biological-performance evaluation process algebra),the formalized modeling of the survivability evolution of critical cloud services is made,and the SLIRAS(susceptible,latent,infected,recovered,antidotal,susceptible)model is obtained.Based on the stochastic simulation and the ODEs(ordinary differential equations)simulation of the Bio-PEPA model,the sensitivity parameters of the model are analyzed from three aspects,namely,the virus propagation speed of inter-domain,recovery ability and memory ability.The results showthat the proposed model has high approximate fitting degree to the actual cloud computing system,and it can well reflect the survivable change of the system.展开更多
Our ecosystem provides us with essential services, most of which come without a price tag and hence are assumed to be ＂free gifts of nature＂ available in plenty. Much of the neoclassical thought and analysis was bas...Our ecosystem provides us with essential services, most of which come without a price tag and hence are assumed to be ＂free gifts of nature＂ available in plenty. Much of the neoclassical thought and analysis was based on this assumption until recently. The dynamic rise in population due to rapid industrialisation and urbanization has caused the realisation that ecosystem services are also limited. Environmental degradation is a common term used to describe the loss or impairment of ecosystem services. Migration is often a consequence of environ- mental degradation; when ecosystem services are impaired and survival comes at stake. But is the degradation of essential ecosystem services sufficient to motivate people to relocate？ Through a review of literature on migration and environmental degradation, this paper strives to answer the above question along with exploring ways how monitoring the deterioration of the environment on time can spare human inhabitants of any ecosystem the pains of migration in search of better means of survival and sustenance.展开更多
文摘Objective:The aim of the research was to investigate the relationship between gastric cancer stage, prognosis and blood platelets count. Methods: Platelet (PLT) count was analyzed retrospectively in 203 patients with gastric cancer from 1998 to 2002. The survivals of gastric cancer were compared between normal PLT group and thrombocytosis group. Results: Among 203 cases, PLT increased in 21 cases. The average platelet counts of patients at different stages had statistically significant differences (P<0.01). The 3-and 5-year survivals in patients of thrombocytosis group were lower than those of the normal PLT group (P<0.01). Conclusion: Thrombocytosis in gastric cancers with advanced stage are common. And PLT count can be a prognostic indicator of survival in patients with gastric cancer undergoing gastrectomy.
文摘AIM： To investigate the 152 cases of paragangliomas resected over the past 32 years in West China Hospital dinicopathologically.METHODS： All cases of paragangliomas diagnosed at the Department of Gastrointestinal Surgery and Department of Pathology, West China Hospital, China were reviewed. The pathological documents were supplied by the Department of Pathology, West China Hospital, and other necessary data were extracted from the hospital records. The statistical analyses were performed by survival analysis （Kaplan-Meier method）, descriptive statistical analyses and Х^2 analysis.RESULTS： The neuroendocrine marker vimentin was found to be selectively expressed in the benign tumors, and there were significant differences in the expression of those markers in both benign and malignant tumors. The survival analysis revealed that survival correlated significantly with the malignancy, metastasis and nodal status.CONCLUSION： Vimentin may be useful in the differential diagnosis between malignant and benign tumors. The difference in the expression of this marker in the tumors could be a clue to the future clinical diagnosis. The malignancy, metastasis and the nodal status may predict the prognosis of this disease.
基金The National Natural Science Foundation of China(No.61202458,61403109)the Natural Science Foundation of Heilongjiang Province of China(No.F2017021)Harbin Science and Technology Innovation Research Funds(No.2016RAQXJ036)
文摘For the cloud computing system,combined wth the memory function and incomplete matching of the biological immune system,a formal modeling and analysis method of the cloud computing system survivability is proposed by analyzing the survival situation of critical cloud services.First,on the basis of the SAIR(susceptible,active,infected,recovered)model,the SEIRS(susceptible,exposed,infected,recovered,susceptible)model and the vulnerability diffusion model of the distributed virtual system,the evolution state of the virus is divided into six types,and then the diffusion rules of the virus in the service domain of the cloud computing system and the propagation rules between service domains are analyzee.Finally,on the basis of Bio-PEPA(biological-performance evaluation process algebra),the formalized modeling of the survivability evolution of critical cloud services is made,and the SLIRAS(susceptible,latent,infected,recovered,antidotal,susceptible)model is obtained.Based on the stochastic simulation and the ODEs(ordinary differential equations)simulation of the Bio-PEPA model,the sensitivity parameters of the model are analyzed from three aspects,namely,the virus propagation speed of inter-domain,recovery ability and memory ability.The results showthat the proposed model has high approximate fitting degree to the actual cloud computing system,and it can well reflect the survivable change of the system.
文摘Our ecosystem provides us with essential services, most of which come without a price tag and hence are assumed to be ＂free gifts of nature＂ available in plenty. Much of the neoclassical thought and analysis was based on this assumption until recently. The dynamic rise in population due to rapid industrialisation and urbanization has caused the realisation that ecosystem services are also limited. Environmental degradation is a common term used to describe the loss or impairment of ecosystem services. Migration is often a consequence of environ- mental degradation; when ecosystem services are impaired and survival comes at stake. But is the degradation of essential ecosystem services sufficient to motivate people to relocate？ Through a review of literature on migration and environmental degradation, this paper strives to answer the above question along with exploring ways how monitoring the deterioration of the environment on time can spare human inhabitants of any ecosystem the pains of migration in search of better means of survival and sustenance.
