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Application of gamma-ray attenuation technology in density measurement of a slurry reactor

Jian XU, Weisheng WEI, Kai ZHANG

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 4,   Pages 486-490 doi: 10.1007/s11705-010-0509-6

Abstract: Axial density profile of the gas-liquid-solid mixture in a slurry bubble column was measured by gamma-rayin the column decreases with the increase of column height, which indicates that the measurement by gamma-ray

Keywords： slurry reactor     axial density distribution     gamma-ray attenuation technology    

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Detectors for pulsed neutron and gamma-ray measurement

Ouyang Xiaoping

Strategic Study of CAE 2009, Volume 11, Issue 5,   Pages 44-53

Abstract: Main parameters of detection systems for measuring time spectrum and intensity of mixed pulsed neutron/gammadetection sensitivity, time response, energy response, linear current and discrimination of neutron to gammatechnical principles have to be established in accordance with the basic interaction principles of neutron/gamma

Keywords： mixed neutron gamma-ray fields     pulsed radiation detection     detecting system     designing techniques    

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Protective effects of nicotine on gamma-aminobutyric acid neurons and dopaminergic neurons in mice with

Lei FU MD , Dezheng GONG BM , Yan PENG , Dongmei WANG BM , Hong XU , Yue LI MD , Dengqin YU BS , Yanhui FENG MD , Shengming YIN PhD , Jin GONG , Yiping SUN PhD ,

Frontiers of Medicine 2009, Volume 3, Issue 3,   Pages 330-335 doi: 10.1007/s11684-009-0051-4

Abstract: This study aimed to investigate the protective effect of nicotine on dopaminergic neurons and its mechanisms in mice with Parkinson disease (PD) induced by 1-methyl-4-phenyl-1,2,3, 6-tetrahydropyridine (MPTP). C57BL/6J mice were injected with MPTP for 8 days to establish a PD model. Nicotine was given for 10 days in the nicotine therapeutic group. Animals were examined behaviorally with the pole test and traction test. Tyrosine hydroxylase (TH) and γ-aminobutyric acid (GABA) were determined by using the immunocytochemistry (ICC) method. The ultrastructural changes of the caudate nucleus (CN) were observed under electron microscopy. The results showed that pretreatment with nicotine could improve the dyskinesia of PD mice markedly. Simultaneously, TH-positive ( < 0.01) neurons and GABA-positive ( < 0.05) neurons in the nicotine therapeutic group were significantly more than those in the model group. The ultrastructural injury of the nicotine therapeutic group was also ameliorated. Nicotine has protective effects on the γ-aminobutyric acid neurons and dopaminergic neurons in the MPTP-treated mice.

Keywords： Parkinson disease     nicotine     dopaminergic neuron     gamma-aminobutyric acid neuron    

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Use of gamma-irradiation pretreatment for enhancement of anaerobic digestibility of sewage sludge

YUAN Shoujun, ZHENG Zheng, YU Xin, ZHAO Yongfu, MU Yanyan

Frontiers of Environmental Science & Engineering 2008, Volume 2, Issue 2,   Pages 247-250 doi: 10.1007/s11783-008-0041-9

Abstract: The effects of ?-irradiation pretreatment on anaerobic digestibility of sewage sludge was investigated in this paper. Parameters like solid components, soluble components, and biogas production of anaerobic digestion experiment for sewage sludge were measured. The values of these parameters were compared before and after ?-irradiation pretreatment. Total solid (TS), volatile solid (VS), suspended solid (SS), volatile suspended solid (VSS), and average floc size of samples decreased after ?-irradiation treatment. Besides, floc size distribution of sewage sludge shifted from 80–100 ?m to 0–40 ?m after ?-irradiation treatment at the doses from 0 to 30 kGy, which indicated the disintegration of sewage sludge. Moreover, microbe cells of sewage sludge were ruptured by ?-irradiation treatment, which resulted in the release of cytoplasm and increase of soluble chemical oxygen demand (SCOD). Both sludge disintegration and microbe cells rupture enhanced the subsequent anaerobic digestion process, which was demonstrated by the increase of accumulated biogas production. Compared with digesters fed with none irradiated sludge, the accumulated biogas production increased 44, 98, and 178 mL for digesters fed sludge irradiated at 2.48, 6.51, and 11.24 kGy, respectively. The results indicated that ?-irradiation pretreatment could effectively enhance anaerobic digestibility of sewage sludge, and correspondingly, could accelerate hydrolysis process, shorten sludge retention time of sludge anaerobic digestion process.

Keywords： anaerobic digestibility     soluble chemical     cytoplasm     digestion process     soluble    

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cattering-absorbing method for the detection of 16.7 MeV high-energy pulsed gamma

Tan Xinjian,Ouyang Xiaoping,Wang Qunshu

Strategic Study of CAE 2009, Volume 11, Issue 8,   Pages 48-51

Abstract: style="text-align: justify;">This paper proposes a new method of diagnosing 16.7 MeV high-energy pulsed gammaThe sensitivity of 16.7 MeV high-energy gamma ranges from 10-21 to 10-16 C·

Keywords： high-energy gamma     Cherenkov detector     scattering absorption method    

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Quality Monitoring of Porous Zein Scaffolds: A Novel Biomaterial

Yue Zhang, Wei-Ying Li, Run Lan, Jin-Ye Wang

Engineering 2017, Volume 3, Issue 1,   Pages 130-135 doi: 10.1016/J.ENG.2017.01.001

Abstract: We also compared the changes in SDS-PAGE patterns when irradiated with different doses of gamma radiationWe found that polymerization or breakage did not occur on peptide chains of zein during gamma-ray (&gamma;-ray) sterilization in the range of 20–30 kGy, which suggested that &gamma;-ray sterilization

Keywords： Zein     Amino acid analysis     SDS-PAGE     Gamma-ray sterilization     MTT assay     CCK-8 assay    

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Statistical modeling of radiolytic (

G. S. Muthu Iswarya, B. Nirkayani, A. Kavithakani, V. C. Padmanaban

Frontiers of Environmental Science & Engineering 2019, Volume 13, Issue 3, doi: 10.1007/s11783-019-1126-3

Abstract:

Linear, interactive and quadratic effects of process parameters were studied.

Degradation of Ofloxacin (Ofx) was related with G value of irradiation process.

The synergistic effect of H2O2 on lower dose of g-irradiation was established.

The process follows pseudo first order with dose constant (d = 0.232 kGy–1).

Keywords： Ofloxacin     Gamma irradiation     Face centered central composite design     Reaction kinetics     Gas Chromatography-Mass    

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Single and joint effects of HHCB and cadmium on zebrafish (

Lei ZHANG, Jing AN, Qixing ZHOU

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 3,   Pages 360-372 doi: 10.1007/s11783-011-0353-z

Abstract: Thus, single and joint toxic effects of 1,3,4,6,7,8-hexahydro-4,6,6,7,8,8- hexamethylcyclopenta-gamma

Keywords： 1     3     4     6     7     8-hexahydro-4     6     6     7     8     8-hexamethylcyclopenta-gamma-2-benzopyran (HHCB)     cadmium (Cd)     antioxidant    

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Research and Development of Heat-Resistant Materials for Advanced USC Power Plants with Steam Temperatures of 700 °C and Above Review

Fujio Abe

Engineering 2015, Volume 1, Issue 2,   Pages 211-224 doi: 10.15302/J-ENG-2015031

Abstract:

Materials-development projects for advanced ultra-supercritical (A-USC) power plants with steam temperatures of 700 °C and above have been performed in order to achieve high efficiency and low CO2 emissions in Europe, the US, Japan, and recently in China and India as well. These projects involve the replacement of martensitic 9%−12% Cr steels with nickel (Ni)-base alloys for the highest temperature boiler and turbine components in order to provide sufficient creep strength at 700 °C and above. To minimize the require­ment for expensive Ni-base alloys, martensitic 9%−12% Cr steels can be applied to the next highest temperature components of an A-USC power plant, up to a maximum of 650 °C. This paper comprehensively describes the research and development of Ni-base alloys and martensitic 9%−12% Cr steels for thick section boiler and turbine components of A-USC power plants, mainly focusing on the long-term creep-rupture strength of base metal and welded joints, strength loss in welded joints, creep-fatigue properties, and microstructure evolution during exposure at elevated temperatures.

Keywords： 12% Cr steel     creep strength     creep-fatigue property     welded joint     grain boundary     microstructure     &gamma    

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Development of Pulsed Radiation Detection Technology

Ouyang Xiaoping

Strategic Study of CAE 2008, Volume 10, Issue 4,   Pages 44-55

Abstract: The diagnostic equipments can measure intense and rapidly changing neutron and gamma rays fluxes in highlymixed neutron-gamma radiation fields.such as selective radiation sensitivities, a wide dynamic range, a large linearity, a good neutron to gamma

Keywords： fission reaction     fusion reaction     pulse radiation detection     detecting system     neutron detection     gamma-ray    

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Secrecy performance analysis of single-input multiple-output generalized- Article

Hong-jiang LEI,Imran Shafique ANSARI,Chao GAO,Yong-cai GUO,Gao-feng PAN,Khalid A. QARAQE

Frontiers of Information Technology & Electronic Engineering 2016, Volume 17, Issue 10,   Pages 1074-1084 doi: 10.1631/FITEE.1601070

Abstract: SIMO systems are derived via two different methods, in which G distribution is approximated by the Gammaand mixture Gamma distributions, respectively.

Keywords： Physical-layer security     Generalized-K fading     Average secrecy capacity     Secrecy outage probability     Mixture Gamma    

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Title Author Date Type Operation

Application of gamma-ray attenuation technology in density measurement of a slurry reactor

Jian XU, Weisheng WEI, Kai ZHANG

Journal Article

Detectors for pulsed neutron and gamma-ray measurement

Ouyang Xiaoping

Journal Article

Protective effects of nicotine on gamma-aminobutyric acid neurons and dopaminergic neurons in mice with

Lei FU MD , Dezheng GONG BM , Yan PENG , Dongmei WANG BM , Hong XU , Yue LI MD , Dengqin YU BS , Yanhui FENG MD , Shengming YIN PhD , Jin GONG , Yiping SUN PhD ,

Journal Article

Use of gamma-irradiation pretreatment for enhancement of anaerobic digestibility of sewage sludge

YUAN Shoujun, ZHENG Zheng, YU Xin, ZHAO Yongfu, MU Yanyan

Journal Article

cattering-absorbing method for the detection of 16.7 MeV high-energy pulsed gamma

Tan Xinjian,Ouyang Xiaoping,Wang Qunshu

Journal Article

Quality Monitoring of Porous Zein Scaffolds: A Novel Biomaterial

Yue Zhang, Wei-Ying Li, Run Lan, Jin-Ye Wang

Journal Article

Statistical modeling of radiolytic (

G. S. Muthu Iswarya, B. Nirkayani, A. Kavithakani, V. C. Padmanaban

Journal Article

Single and joint effects of HHCB and cadmium on zebrafish (

Lei ZHANG, Jing AN, Qixing ZHOU

Journal Article

Research and Development of Heat-Resistant Materials for Advanced USC Power Plants with Steam Temperatures of 700 °C and Above

Fujio Abe

Journal Article

Development of Pulsed Radiation Detection Technology

Ouyang Xiaoping

Journal Article

Secrecy performance analysis of single-input multiple-output generalized-

Hong-jiang LEI,Imran Shafique ANSARI,Chao GAO,Yong-cai GUO,Gao-feng PAN,Khalid A. QARAQE

Journal Article