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Preliminary characterization of radiation fields of IHNI-1 for BNCT

Chen Jun,Li Chunjuan,Song Mingzhe,Li Wei,Yao Shunhe,Diao Lijun,Yao Yanling,Zhang Zizhu,Gao Jijin,Zhang Yifan

Strategic Study of CAE 2012, Volume 14, Issue 8,   Pages 106-112

Abstract:

The characteristic parameters of the neutron radiation fields producedby an in-hospital neutron irradiatior for boron neutron capture therapy(BNCT), such as neutron energyspectra, neutron flux density and neutron absorbed dose rate and their spatial distributions in freeimprove the energy resolution in epithermal energy range and the ability to discriminate different neutronThe preliminary results show that the neutron flux densities of the irradiators achieve the expected

Keywords： in-hospital neutron irradiatior for BNCT     neutron enengy spectrum     neutron flux density     absorbed doserate of neutron and γ ray    

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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 neutroninclude detection sensitivity, time response, energy response, linear current and discrimination of neutrontechnical principles have to be established in accordance with the basic interaction principles of neutron

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

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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.properties, such as selective radiation sensitivities, a wide dynamic range, a large linearity, a good neutronto gamma ray discrimination, a very fast time response, reliability, etc.

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

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Migration of ammonium nitrogen in ion-absorbed rare earth soils during and post mining: a column study

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 8, doi: 10.1007/s11783-023-1702-4

Abstract:

● Column experiments with an inclined slope were applied to simulate NH4–N transport.

Keywords： Ion-absorbed rare earth     Ammonium nitrogen transport     HYDRUS-2D     Numerical simulation    

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Optimization design for the epithermal neutron duct of in-hospital neutron irradiator mark 1 reactor

Jiang Xinbiao,Zhu Yangni,Zhao Zhumin,Chen Lixin,Zhou Yongmao

Strategic Study of CAE 2012, Volume 14, Issue 8,   Pages 33-37

Abstract: text-align: justify;">Optimization design for the moderation layer and reflection layer of the epithermal neutronduct at in-hospital neutron irradiator mark 1(IHNI-1) reactor is carried out by using MCNP in this papercompared with Al materials, and two moderation optimization schemes which can obtain intensive epithermal neutronFinally, based on the moderation layer and reflection layer optimization schemes, the neutron and gammaspace distribution of the epithermal neutron beam at exit of this duct are detailed calculated.

Keywords： IHNI-1 reactor     epithermal neutron beam     neutron flux density    

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A study on quality evaluation for bituminous mixture using X-ray CT

Satoshi TANIGUCHI, Keiichiro OGAWA, Jun OTANI, Itaru NISHIZAKI

Frontiers of Structural and Civil Engineering 2013, Volume 7, Issue 2,   Pages 89-101 doi: 10.1007/s11709-013-0197-7

Abstract: objective of this paper is to propose a new quality evaluation method for asphalt concrete mixture using X-rayTo achieve this aim, asphalt mixtures should be subjected to the X-ray CT scanning and its characteristicscoarse-graded and porous asphalt mixtures were made; 3) materials and mixtures were subjected to the X-ray

Keywords： asphalt concrete mixture     aggregate     bitumen     bitumen content     quality evaluation     X-ray CT    

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Adsorption of fluoride on clay minerals and their mechanisms using X-ray photoelectron spectroscopy

Junyi DU, Daishe WU, Huayun XIAO, Ping LI

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 2,   Pages 212-226 doi: 10.1007/s11783-010-0255-5

Abstract: times by probing their fluoride superficial layer binding energies and element compositions using X-ray

Keywords： clay mineral     fluoride (F)     adsorption mechanism     X-ray photoelectron spectroscopy (XPS)    

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Optimization and modeling of coagulation-flocculation to remove algae and organic matter from surface water by response surface methodology

Ray, Ajay K Ray, Tianyin Huang, Jiabin Chen

Frontiers of Environmental Science & Engineering 2019, Volume 13, Issue 5, doi: 10.1007/s11783-019-1159-7

Abstract: Charge neutralization and sweep flocculation were the major mechanisms. Effect of process parameters was investigated. Optimal coagulation conditions were studied by response surface methodology. ANN models presented more robust and accurate prediction than RSM. Seasonal algal blooms of Lake Yangcheng highlight the necessity to develop an effective and optimal water treatment process to enhance the removal of algae and dissolved organic matter (DOM). In the present study, the coagulation performance for the removal of algae, turbidity, dissolved organic carbon (DOC) and ultraviolet absorbance at 254 nm (UV254) was investigated systematically by central composite design (CCD) using response surface methodology (RSM). The regression models were developed to illustrate the relationships between coagulation performance and experimental variables. Analysis of variance (ANOVA) was performed to test the significance of the response surface models. It can be concluded that the major mechanisms of coagulation to remove algae and DOM were charge neutralization and sweep flocculation at a pH range of 4.66–6.34. The optimal coagulation conditions with coagulant dosage of 7.57 mg Al/L, pH of 5.42 and initial algal cell density of 3.83 × 106 cell/mL led to removal of 96.76%, 97.64%, 40.23% and 30.12% in term of cell density, turbidity, DOC and UV254 absorbance, respectively, which were in good agreement with the validation experimental results. A comparison between the modeling results derived through both ANOVA and artificial neural networks (ANN) based on experimental data showed a high correlation coefficient, which indicated that the models were significant and fitted well with experimental results. The results proposed a valuable reference for the treatment of algae-laden surface water in practical application by the optimal coagulation-flocculation process.

Keywords： Algae     Coagulation-flocculation     Response surface methodology     Artificial neural networks    

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Air bearing center cross gap of neutron stress spectrometer sample table support system

Yang LI,Yunxin WU,Hai GONG,Xiaolei FENG

Frontiers of Mechanical Engineering 2016, Volume 11, Issue 4,   Pages 403-411 doi: 10.1007/s11465-016-0405-y

Abstract:

A support system is the main load-bearing component of sample table for neutron stress spectrometerThe neutron stress spectrometer sample table was introduced, and the scheme for air bearing combination

Keywords： neutron stress spectrometer     sample table     support system     air bearing     center cross gap     simulation     experiment    

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Establishing two-stage interaction between fly ash and NaOH by X-ray and infrared analyses

Bhagwanjee JHA,Nevin KOSHY,Devendra Narain SINGH

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 2,   Pages 216-221 doi: 10.1007/s11783-014-0630-8

Abstract: explored by several researchers and formation of fly ash zeolites has been confirmed based on the X-ray

Keywords： hydrothermal treatment     alkali activation     fly ash zeolites     X-ray diffraction (XRD) and Fourier transform-infrared    

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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-rayIt was found that the response frequency and the ray intensity should be as high as possible to improvecoefficient depended on not the object’s thickness but the location where the object was placed between the raycolumn 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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Transmission probability method based on triangle meshes for solving the unstructured geometry neutron

WU Hongchun, LIU Pingping, ZHOU Yongqiang, CAO Liangzhi

Frontiers in Energy 2007, Volume 1, Issue 2,   Pages 158-166 doi: 10.1007/s11708-007-0020-z

Abstract: The fuel assembly or core with unstructured geometry is frequently used in the advanced reactor. To calculate the fuel assembly, the transmission probability method (TPM) is widely used. However, the rectangular or hexagonal meshes are mainly used in the TPM codes for the normal core structure. The triangle meshes are most useful for expressing the complicated unstructured geometry. Even though the finite element method and Monte-Carlo method are well suited for solving the unstructured geometry problem, they are very time-consuming. Therefore, a TPM code based on the triangle meshes is developed here. This code was applied to the hybrid fuel geometry, and compared with the results of the MCNP code and other codes. The results of the comparison were consistent with each other. The TPM with triangle meshes can thus be applied to the two-dimensional arbitrary fuel assembly.

Keywords： unstructured geometry     assembly     transmission probability     TPM     rectangular    

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Design of efficient Pt-based electrocatalysts through characterization by X-ray absorption spectroscopy

Nebojsa S. MARINKOVIC, Kotaro SASAKI, Radoslav R. ADZIC

Frontiers in Energy 2017, Volume 11, Issue 3,   Pages 236-244 doi: 10.1007/s11708-017-0487-1

Abstract: A method is described to determine the internal structure of electrocatalyst nanoparticles by X-rayspectroscopic technique typically utilizing synchrotron radiation as the source measures changes in the X-ray

Keywords： X-ray absorption spectroscopy     EXAFS     XANES     nanocatalysts     core shell    

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Error analysis of the parameters for non-coaxial grazing X-ray microscope

ZHAO Lingling, HU Jiasheng, LI Xiang

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 3,   Pages 323-329 doi: 10.1007/s11465-007-0057-z

Abstract: A non-coaxial grazing X-ray microscope, consisting of four spherical mirrors, is designed for diagnosisA set of non-coaxial grazing X-ray microscopes is manufactured based on the tolerances.

Keywords： non-coaxial     spherical     manufacturing     necessary     diagnosis    

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β-Nickel hydroxide cathode material for nano-suspension redox flow batteries

Yue LI, Cheng HE, Elena V. TIMOFEEVA, Yujia DING, Javier PARRONDO, Carlo SEGRE, Vijay RAMANI

Frontiers in Energy 2017, Volume 11, Issue 3,   Pages 401-409 doi: 10.1007/s11708-017-0496-0

Abstract: and morphology of the nanoparticles were characterized by scanning electronic microscopy (SEM) and X-rayThe phase transformations occurring during charge/discharge were investigated using X-ray absorptionspectroscopy to obtain the shift in the oxidation state of Ni (X-ray adsorption near edge structure,XANES) and the distances between Ni and surrounding atoms in charged and discharged states (extended X-ray

Keywords： nano-suspension flow battery     β-Ni(OH)2     scanning electronic microscopy (SEM)     X-ray diffraction(XRD)     X-ray adsorption near edge structure (XANES)     extended X-ray absorption fine structure (EXAFS)    

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Title Author Date Type Operation

Preliminary characterization of radiation fields of IHNI-1 for BNCT

Chen Jun,Li Chunjuan,Song Mingzhe,Li Wei,Yao Shunhe,Diao Lijun,Yao Yanling,Zhang Zizhu,Gao Jijin,Zhang Yifan

Journal Article

Detectors for pulsed neutron and gamma-ray measurement

Ouyang Xiaoping

Journal Article

Development of Pulsed Radiation Detection Technology

Ouyang Xiaoping

Journal Article

Migration of ammonium nitrogen in ion-absorbed rare earth soils during and post mining: a column study

Journal Article

Optimization design for the epithermal neutron duct of in-hospital neutron irradiator mark 1 reactor

Jiang Xinbiao,Zhu Yangni,Zhao Zhumin,Chen Lixin,Zhou Yongmao

Journal Article

A study on quality evaluation for bituminous mixture using X-ray CT

Satoshi TANIGUCHI, Keiichiro OGAWA, Jun OTANI, Itaru NISHIZAKI

Journal Article

Adsorption of fluoride on clay minerals and their mechanisms using X-ray photoelectron spectroscopy

Junyi DU, Daishe WU, Huayun XIAO, Ping LI

Journal Article

Optimization and modeling of coagulation-flocculation to remove algae and organic matter from surface water by response surface methodology

Ray, Ajay K Ray, Tianyin Huang, Jiabin Chen

Journal Article

Air bearing center cross gap of neutron stress spectrometer sample table support system

Yang LI,Yunxin WU,Hai GONG,Xiaolei FENG

Journal Article

Establishing two-stage interaction between fly ash and NaOH by X-ray and infrared analyses

Bhagwanjee JHA,Nevin KOSHY,Devendra Narain SINGH

Journal Article

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

Jian XU, Weisheng WEI, Kai ZHANG

Journal Article

Transmission probability method based on triangle meshes for solving the unstructured geometry neutron

WU Hongchun, LIU Pingping, ZHOU Yongqiang, CAO Liangzhi

Journal Article

Design of efficient Pt-based electrocatalysts through characterization by X-ray absorption spectroscopy

Nebojsa S. MARINKOVIC, Kotaro SASAKI, Radoslav R. ADZIC

Journal Article

Error analysis of the parameters for non-coaxial grazing X-ray microscope

ZHAO Lingling, HU Jiasheng, LI Xiang

Journal Article

β-Nickel hydroxide cathode material for nano-suspension redox flow batteries

Yue LI, Cheng HE, Elena V. TIMOFEEVA, Yujia DING, Javier PARRONDO, Carlo SEGRE, Vijay RAMANI

Journal Article