Electric DC and AC measurements and dielectric investigations have been carried out on some Plio-Qaternary basalt of Hemat Madam volcano from Sana’a-Amran volcanic field (SAVF). In this article we focus primarily on ...Electric DC and AC measurements and dielectric investigations have been carried out on some Plio-Qaternary basalt of Hemat Madam volcano from Sana’a-Amran volcanic field (SAVF). In this article we focus primarily on the field aspects and the main characteristic mineralogical and petrographic features of this inactive volcano. Using DC and AC experimental arrangements we discovered excellent electrical characteristics for this inactive volcano. The results of DC electrical resistivity versus a temperature reveal that all the samples have semiconductor characters. Moreover, the measurements showed that these samples have high resistive extrinsic semiconductors (ρDC ~ 109 Ω·m). AC and dielectric measurements were ensured the semi-conductivity and normal dielectric behavior of these samples. AC measurements reveal that the classical barrier hopping model (CBH) is the predominant conduction mechanism, while at low temperature region small polarons may contribute to the conduction in the samples. The samples have low values for dielectric constant ε' and low loss factor tanδ (ε' ~ 27 and tanδ ~ 0.7 at 200 Hz for the sample BA7). Then, the semicodutor behavior, the high values of DC/AC resistivity and low loss dissipation factor considered a very good characterization for magnetic semiconductor materials. So, we can predict that, the studied natural materials represent newborn promising material sciences for many more technological applications.展开更多
2020403 The clinical characteristics of patients with primary plasma cell leukemia and the efficacy of novel agents and hematopoietic stem cell transplantation.LI Wenjing(李文静),et al.Dept Hematol,Peking Univ People...2020403 The clinical characteristics of patients with primary plasma cell leukemia and the efficacy of novel agents and hematopoietic stem cell transplantation.LI Wenjing(李文静),et al.Dept Hematol,Peking Univ People’s Hosp,Peking Univ Hematol Instit,Beijing 100044.Chin J Intern Med 2020;59(10):801-806.展开更多
To investigate the levels of IL 18 in the bone marrow of both normal subjects a nd patients with hematological diseases and to determine the possible significan ce of IL 18 in pathogenesis of some hematological mali...To investigate the levels of IL 18 in the bone marrow of both normal subjects a nd patients with hematological diseases and to determine the possible significan ce of IL 18 in pathogenesis of some hematological malignancies Methods The IL 18 mRNA levels in the bone marrow of 140 patients with hematological dis eases and 15 normal donors were determined by the semi quantitative reverse tra nscriptase polymerase chain reaction (RT PCR) Immunohistochemical method was used to detect IL 18 protein in 12 patients with acute myeloid leukemia (AML) The possible regulation of IL 18 for proliferation of some leukemia cells was investigated using antisense techniques Results IL 18 mRNA levels were obviously higher in the patients with leukemia or other malignant hematological diseases (OMHD) than in normal donors However, no sign ificant difference was found in the level of transcription between patients with iron deficiency anemia (IDA) and normal controls Immunohistochemical method c onfirmed the presence of IL 18 protein in 10 out of 12 AML cases with positive transcription By 3 (4,5 dimethylthiazol 2 yl) 2,5 diphenyl tetrazolium b romide (MTT) assay, IL 18 antisense oligodeoxynucleotides (ASON) clearly inhibi ted the growth of J6 1 and HL 60 cells (42% and 12% inhibited, respectively) i n a dose dependant manner Conclusions IL 18 was detected at elevated levels in the bone marrow of patients with some hematological malignancies, and might be involved in the proliferation of certai n leukemic cells in vivo through an autocrine mechanism展开更多
2020104 Analysis of correlation between plasma trough level and response of generic imatinib in the treatment of Chinese patients with chronic myeloid leukemia.YOU Jianhua(游建华),et al.Dept Hematol,Ruijin Hosp,Shangh...2020104 Analysis of correlation between plasma trough level and response of generic imatinib in the treatment of Chinese patients with chronic myeloid leukemia.YOU Jianhua(游建华),et al.Dept Hematol,Ruijin Hosp,Shanghai Jiaotong Univ Med Sch,Shanghai 200025.Chin J Hematol 2019;40(11):939-942.展开更多
2022304 Influence of the number of high-risk cytogenetic abnormalities on the clinical characteristics and prognosis in 360 patients with newly diagnosed multiplemyeloma.CHENZhi(陈智),et al.Dept Hematol,1st Affil Hosp...2022304 Influence of the number of high-risk cytogenetic abnormalities on the clinical characteristics and prognosis in 360 patients with newly diagnosed multiplemyeloma.CHENZhi(陈智),et al.Dept Hematol,1st Affil Hosp,Nanjing Med Univ,Nanjing 210029.Chin J Hematol 2022;43(5):408-413.展开更多
文摘Electric DC and AC measurements and dielectric investigations have been carried out on some Plio-Qaternary basalt of Hemat Madam volcano from Sana’a-Amran volcanic field (SAVF). In this article we focus primarily on the field aspects and the main characteristic mineralogical and petrographic features of this inactive volcano. Using DC and AC experimental arrangements we discovered excellent electrical characteristics for this inactive volcano. The results of DC electrical resistivity versus a temperature reveal that all the samples have semiconductor characters. Moreover, the measurements showed that these samples have high resistive extrinsic semiconductors (ρDC ~ 109 Ω·m). AC and dielectric measurements were ensured the semi-conductivity and normal dielectric behavior of these samples. AC measurements reveal that the classical barrier hopping model (CBH) is the predominant conduction mechanism, while at low temperature region small polarons may contribute to the conduction in the samples. The samples have low values for dielectric constant ε' and low loss factor tanδ (ε' ~ 27 and tanδ ~ 0.7 at 200 Hz for the sample BA7). Then, the semicodutor behavior, the high values of DC/AC resistivity and low loss dissipation factor considered a very good characterization for magnetic semiconductor materials. So, we can predict that, the studied natural materials represent newborn promising material sciences for many more technological applications.
文摘2020403 The clinical characteristics of patients with primary plasma cell leukemia and the efficacy of novel agents and hematopoietic stem cell transplantation.LI Wenjing(李文静),et al.Dept Hematol,Peking Univ People’s Hosp,Peking Univ Hematol Instit,Beijing 100044.Chin J Intern Med 2020;59(10):801-806.
基金ThisworkwassupportedbytheNationalNaturalSciencesFoundationofChina (No 39980 0 1 4 )
文摘To investigate the levels of IL 18 in the bone marrow of both normal subjects a nd patients with hematological diseases and to determine the possible significan ce of IL 18 in pathogenesis of some hematological malignancies Methods The IL 18 mRNA levels in the bone marrow of 140 patients with hematological dis eases and 15 normal donors were determined by the semi quantitative reverse tra nscriptase polymerase chain reaction (RT PCR) Immunohistochemical method was used to detect IL 18 protein in 12 patients with acute myeloid leukemia (AML) The possible regulation of IL 18 for proliferation of some leukemia cells was investigated using antisense techniques Results IL 18 mRNA levels were obviously higher in the patients with leukemia or other malignant hematological diseases (OMHD) than in normal donors However, no sign ificant difference was found in the level of transcription between patients with iron deficiency anemia (IDA) and normal controls Immunohistochemical method c onfirmed the presence of IL 18 protein in 10 out of 12 AML cases with positive transcription By 3 (4,5 dimethylthiazol 2 yl) 2,5 diphenyl tetrazolium b romide (MTT) assay, IL 18 antisense oligodeoxynucleotides (ASON) clearly inhibi ted the growth of J6 1 and HL 60 cells (42% and 12% inhibited, respectively) i n a dose dependant manner Conclusions IL 18 was detected at elevated levels in the bone marrow of patients with some hematological malignancies, and might be involved in the proliferation of certai n leukemic cells in vivo through an autocrine mechanism
文摘2020104 Analysis of correlation between plasma trough level and response of generic imatinib in the treatment of Chinese patients with chronic myeloid leukemia.YOU Jianhua(游建华),et al.Dept Hematol,Ruijin Hosp,Shanghai Jiaotong Univ Med Sch,Shanghai 200025.Chin J Hematol 2019;40(11):939-942.
文摘2022304 Influence of the number of high-risk cytogenetic abnormalities on the clinical characteristics and prognosis in 360 patients with newly diagnosed multiplemyeloma.CHENZhi(陈智),et al.Dept Hematol,1st Affil Hosp,Nanjing Med Univ,Nanjing 210029.Chin J Hematol 2022;43(5):408-413.
