ESR saturation power point of the hair of healthy, lung cancer, esophageal cancer, as well as silicosis, tuberculosis and cardiovascular disease were detected. The results show that the positive rate is 1.69%, 85.42%,...ESR saturation power point of the hair of healthy, lung cancer, esophageal cancer, as well as silicosis, tuberculosis and cardiovascular disease were detected. The results show that the positive rate is 1.69%, 85.42%, 90.4%, 20.00%, 27.27% and 0% respectively. There is a significant difference between lung cancer, esophageal cancer and healthy persons (P<0. 001). ESR saturation power point elevates sharply after treatment of lung cancer, 71. 43% of total cases ranged from 7. 9 to 24. 0 (mW), after treatment of esophageal cancer, 71. 23% ranged from 7.9 to 19.9 (mW). All patients with cardiovascular disease were examined to be negative, i. e. , above 10. 0 (mW).展开更多
I.INTRODUCTION Electron Spin Resonance (ESR) is a relatively new dating technique for the Qua-ternary and archaeological materials. Recently, it has been developed rapidly. Up to 1982 there were 23 labs in the world w...I.INTRODUCTION Electron Spin Resonance (ESR) is a relatively new dating technique for the Qua-ternary and archaeological materials. Recently, it has been developed rapidly. Up to 1982 there were 23 labs in the world where ESR dating was studied. However, it展开更多
Spin labeling analysis （SLA） for the study of the metabolic fate and pharmaco-kinetics of a drug possesses several attractive features. It has high senitivity and high specificity.The limit of detection of ESR spect...Spin labeling analysis （SLA） for the study of the metabolic fate and pharmaco-kinetics of a drug possesses several attractive features. It has high senitivity and high specificity.The limit of detection of ESR spectrometry is generally 10-11 M and coexisting substances, which may exhibit similar characteristic ESR responses as that展开更多
In the previous paper a study on the effect of anisodamine, scopolamine, anisodine and atropine on the fluidity of DPPC liposomes using DSC technique has been reported. Results showed that anisodamine and atropine can...In the previous paper a study on the effect of anisodamine, scopolamine, anisodine and atropine on the fluidity of DPPC liposomes using DSC technique has been reported. Results showed that anisodamine and atropine can significantly increase thefluidity of lipesomes. This paper further shows that using ESR, fluorescence polarization and freeze-fracture electron microscopic techniques, anisodamine can increase展开更多
Complexes of transition metals with histidine play an important role in biochemistry. Walik has studied vanadyl histidine complex by IR at pH=4.5 and suggested that histidine should be coordinated to vanadium atom thr...Complexes of transition metals with histidine play an important role in biochemistry. Walik has studied vanadyl histidine complex by IR at pH=4.5 and suggested that histidine should be coordinated to vanadium atom through amino N and earbexyl O to form a 1:2 complex VO （His）2. Johnson has reported ESR spectra展开更多
The repart that dimethyl 2,3-dicyano-2,3-diphenylsuccinate (1) is an effective free radical initiator for polymerization has attracted much attention. A variable temperature ESR determination of (1) in biphenyldipheny...The repart that dimethyl 2,3-dicyano-2,3-diphenylsuccinate (1) is an effective free radical initiator for polymerization has attracted much attention. A variable temperature ESR determination of (1) in biphenyldiphenyl ether solution showed that 1 decomposed above 120℃ into α-cyano-α-methoxycarbonylbenzyl radicals. However, no report has appeared up to the present on the variable temperature ERS determination of this type of compound in the solid state.展开更多
Since the time of the rainy Holocene, there have been periods of consecutive rain and drought on Egypt. Study of carbon 14 in the long-lived coniferous tree rings could see activity in the sun （spots and solar flares...Since the time of the rainy Holocene, there have been periods of consecutive rain and drought on Egypt. Study of carbon 14 in the long-lived coniferous tree rings could see activity in the sun （spots and solar flares） during eleven years cycle, as well as knowledge of possible flooding of the Nile and the periods of increase and decrease of the extent necessary to meet the soil around Lake Qarun in Fayoum-Egypt. From historical records in ancient Egypt and Muslim countries, the possible link between periods of the disappearance of sunspots on the solar disc for several years and is known to inch lower level and role of the minimum level of Mandour creeping ice on Southern Europe to the Mediterranean Sea, and the offset of the drought in North Africa and the Sahel region of Africa during the last thousand years. Analyzed pollen fossils of the overlapped layers of soil in two areas of the Delta were Avaris in Sharkiya Province and Mendes in Dakahliya Province. The study pointed out that there are differences due to environmental conditions, demonstrated by the analysis of soil pH, increased electrical connectivity also, the evidence of sulfates and chlorides indicate high salinity of Mendes and Avaris. Also the analysis of fossil pollen of successive layers of soil for both regions resulted in findings of fossil pollen of the species Chenopodiaceae by 51.2%, in Mendes, while, 7% in the Avaris. This is strong evidence of the existence conditions of salt in Mendes than Avaris archaeological sites.展开更多
Photosynthetic oxygen evolution and respiratory oxygen consumption are important physiological indexes. These oxygen exchanges in algae cells can be usually measured with an oxygen electrode. Nostoc flagelliforme is a...Photosynthetic oxygen evolution and respiratory oxygen consumption are important physiological indexes. These oxygen exchanges in algae cells can be usually measured with an oxygen electrode. Nostoc flagelliforme is a species of terrestrial cyanobacteria with the high economical value. Up to date, the cyanobacterium cannot be cultivated because its physiology is little known. As the metabolic activity in N. flagelliforme is quite low,展开更多
The nature of ESR signals derived from bilirubin-Ⅸα has been studied by focusing onthe samples treated with free radical generating and inhibiting systems, i.e. X-XOD, Fe/EDTA, SOD, mannitol/ascorbate, CO, KCN, etc....The nature of ESR signals derived from bilirubin-Ⅸα has been studied by focusing onthe samples treated with free radical generating and inhibiting systems, i.e. X-XOD, Fe/EDTA, SOD, mannitol/ascorbate, CO, KCN, etc. In all the cases, the stable signals comprisethose originated from semiquinone radical (g = 2.0012) and superoxide free radical (g_∥=2.041, g_⊥= 2.0040). The superoxide is shown binding with certain metal ions chelated bybilirubin. The free radical scavengers are able to destroy these radicals. The kinetic curveof the regeneration of bilirubin radicals has been determined and the reaction follows azero order mechanism. It is likely that both the physiological and toxic actions of bilirubinare related to the characters of its free radicals. Bilirubin is discussed as "active oxygensink" in mammalians.展开更多
文摘ESR saturation power point of the hair of healthy, lung cancer, esophageal cancer, as well as silicosis, tuberculosis and cardiovascular disease were detected. The results show that the positive rate is 1.69%, 85.42%, 90.4%, 20.00%, 27.27% and 0% respectively. There is a significant difference between lung cancer, esophageal cancer and healthy persons (P<0. 001). ESR saturation power point elevates sharply after treatment of lung cancer, 71. 43% of total cases ranged from 7. 9 to 24. 0 (mW), after treatment of esophageal cancer, 71. 23% ranged from 7.9 to 19.9 (mW). All patients with cardiovascular disease were examined to be negative, i. e. , above 10. 0 (mW).
文摘I.INTRODUCTION Electron Spin Resonance (ESR) is a relatively new dating technique for the Qua-ternary and archaeological materials. Recently, it has been developed rapidly. Up to 1982 there were 23 labs in the world where ESR dating was studied. However, it
文摘Spin labeling analysis （SLA） for the study of the metabolic fate and pharmaco-kinetics of a drug possesses several attractive features. It has high senitivity and high specificity.The limit of detection of ESR spectrometry is generally 10-11 M and coexisting substances, which may exhibit similar characteristic ESR responses as that
文摘In the previous paper a study on the effect of anisodamine, scopolamine, anisodine and atropine on the fluidity of DPPC liposomes using DSC technique has been reported. Results showed that anisodamine and atropine can significantly increase thefluidity of lipesomes. This paper further shows that using ESR, fluorescence polarization and freeze-fracture electron microscopic techniques, anisodamine can increase
文摘Complexes of transition metals with histidine play an important role in biochemistry. Walik has studied vanadyl histidine complex by IR at pH=4.5 and suggested that histidine should be coordinated to vanadium atom through amino N and earbexyl O to form a 1:2 complex VO （His）2. Johnson has reported ESR spectra
文摘The repart that dimethyl 2,3-dicyano-2,3-diphenylsuccinate (1) is an effective free radical initiator for polymerization has attracted much attention. A variable temperature ESR determination of (1) in biphenyldiphenyl ether solution showed that 1 decomposed above 120℃ into α-cyano-α-methoxycarbonylbenzyl radicals. However, no report has appeared up to the present on the variable temperature ERS determination of this type of compound in the solid state.
文摘Since the time of the rainy Holocene, there have been periods of consecutive rain and drought on Egypt. Study of carbon 14 in the long-lived coniferous tree rings could see activity in the sun （spots and solar flares） during eleven years cycle, as well as knowledge of possible flooding of the Nile and the periods of increase and decrease of the extent necessary to meet the soil around Lake Qarun in Fayoum-Egypt. From historical records in ancient Egypt and Muslim countries, the possible link between periods of the disappearance of sunspots on the solar disc for several years and is known to inch lower level and role of the minimum level of Mandour creeping ice on Southern Europe to the Mediterranean Sea, and the offset of the drought in North Africa and the Sahel region of Africa during the last thousand years. Analyzed pollen fossils of the overlapped layers of soil in two areas of the Delta were Avaris in Sharkiya Province and Mendes in Dakahliya Province. The study pointed out that there are differences due to environmental conditions, demonstrated by the analysis of soil pH, increased electrical connectivity also, the evidence of sulfates and chlorides indicate high salinity of Mendes and Avaris. Also the analysis of fossil pollen of successive layers of soil for both regions resulted in findings of fossil pollen of the species Chenopodiaceae by 51.2%, in Mendes, while, 7% in the Avaris. This is strong evidence of the existence conditions of salt in Mendes than Avaris archaeological sites.
基金Project supported by the National Natural Science Foundation of China.
文摘Photosynthetic oxygen evolution and respiratory oxygen consumption are important physiological indexes. These oxygen exchanges in algae cells can be usually measured with an oxygen electrode. Nostoc flagelliforme is a species of terrestrial cyanobacteria with the high economical value. Up to date, the cyanobacterium cannot be cultivated because its physiology is little known. As the metabolic activity in N. flagelliforme is quite low,
基金This research was granted and supported by the National Natural Science Foundation of China.
文摘The nature of ESR signals derived from bilirubin-Ⅸα has been studied by focusing onthe samples treated with free radical generating and inhibiting systems, i.e. X-XOD, Fe/EDTA, SOD, mannitol/ascorbate, CO, KCN, etc. In all the cases, the stable signals comprisethose originated from semiquinone radical (g = 2.0012) and superoxide free radical (g_∥=2.041, g_⊥= 2.0040). The superoxide is shown binding with certain metal ions chelated bybilirubin. The free radical scavengers are able to destroy these radicals. The kinetic curveof the regeneration of bilirubin radicals has been determined and the reaction follows azero order mechanism. It is likely that both the physiological and toxic actions of bilirubinare related to the characters of its free radicals. Bilirubin is discussed as "active oxygensink" in mammalians.
