Applied Radiation and Isotopes最新文献

{"title":"Simulation and verification of a slim X-ray density logging tool","authors":"Jilin Fan,&nbsp;Jiaqi XiangYang,&nbsp;Qiong Zhang","doi":"10.1016/j.apradiso.2025.111741","DOIUrl":"10.1016/j.apradiso.2025.111741","url":null,"abstract":"<div><div>With advancements in oil and gas exploration, the design and measurement methods of X-ray density logging tools have gained significant attention as a new generation of controllable sources. Using an existing ultra-slim gamma tool as an example, this work shows how the tool could be re-designed by replacing the gamma source with an X-ray source. The key aspects of this study include: 1) Simulating the production of X-ray with different energies; 2) Studying the optimum spacing of X-ray logging tool by considering the factors of detection efficiency, density measurement sensitivity, and depth of investigation; 3) Performing X-ray density measurements using multivariable forward and inversion methods and comparing the results with gamma density logging. The findings reveal that by adjusting the spacing of near and far detectors to 110 mm and 290 mm respectively, the X-ray logging tool achieves performance comparable to or even surpassing it of the gamma tool. In comparison to gamma logging, X-ray logging demonstrates superior formation sensitivity, vertical resolution, and formation density measurement accuracy. Notably, in heavy mudcake condition, the X-ray logging tool enhances the Pe measurement accuracy by 47%. These investigations serve as valuable insights for the forward design of X-ray logging tools and formation density measurements.</div></div>","PeriodicalId":8096,"journal":{"name":"Applied Radiation and Isotopes","volume":"220 ","pages":"Article 111741"},"PeriodicalIF":1.6,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143474662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Simulation of diffusion and decay of radon/thoron exhaled from a wall and its newly created progeny. Response of a bare LR-115 detector placed on the wall","authors":"Daniel Francisco Palacios Fernández ,&nbsp;Patrizia Edel Pereyra Anaya ,&nbsp;Laszlo Sajo-Bohus","doi":"10.1016/j.apradiso.2025.111743","DOIUrl":"10.1016/j.apradiso.2025.111743","url":null,"abstract":"<div><div>Monte Carlo techniques were used to simulate the air diffusion of exhaled radon/thoron atoms from a wall, the formation and decay of different radioactive species during transport, and the response of a bare LR-115 detector placed on the exhaling surface. The spatial distributions of radionuclide decays and the detector's partial sensitivities to radon/thoron and their progeny were determined. The simulation results were numerically validated through comparisons with published theoretical and experimental data. From the simulated experiments, the contributions of different species to the total track density and what the detector might measure in the studied configuration and assumed parameters were inferred. It was shown that near the wall, where the effective volumes of all species are located, the number of radon atoms was approximately constant, while that of thoron decreased to about 30% relative to the number of exhaled atoms, and the equilibrium factors of both gases were very low. A negligible contribution of ²²⁰Rn and ²¹⁶Po to the track density is expected if the distance between detector's edges and support exceeds 5–6 times the thoron characteristic diffusion length. For similar detector and support sizes, these atoms can significantly contribute to the track density if thoron exhalation rate from wall is high. The advantages and limitations of the detector exposure method for estimating indoor radon concentrations are analyzed. Finally, a simple method is suggested for more accurate radon measurements using the bare LR-115 detector placed on a wall.</div></div>","PeriodicalId":8096,"journal":{"name":"Applied Radiation and Isotopes","volume":"220 ","pages":"Article 111743"},"PeriodicalIF":1.6,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143479020","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"From the atomic nucleus to cancer cure: The marvel of BNCT a nuclear physicist views. Achievements and outstanding problems","authors":"Andrés J. Kreiner","doi":"10.1016/j.apradiso.2025.111725","DOIUrl":"10.1016/j.apradiso.2025.111725","url":null,"abstract":"<div><div>The interdisciplinary character of the BNCT endeavour is stressed ranging from nuclear physics to most of the natural and exact sciences.</div><div>Radiobiology studies, carried out with accelerated proton, alpha and Li beams, are used to isolate the relative biological effectiveness of “pure” high LET radiation. Based on the survival curve results, we discuss the question of the use of fixed RBE factors to convert physical doses into equivalent or isoeffective gamma doses. Furthermore, the necessity of converting physical doses into equivalent or isoeffective gamma doses is questioned. Tumor Control Probabilities are discussed and used as a tool to optimize Beam Shaping Assemblies.</div><div>Boron microdistribution studies are mentioned and the lack of a sufficiently complete method to cover the whole tumor, given the heterogeneity in 3D, is pointed out.</div><div>The development of Prompt Gamma Single Photon Emission Computed Tomography, PG-SPECT, systems especially tailored for BNCT are discussed stressing them as a powerful way of determining in real time the macroscopic average boron dose delivered to the patient.</div><div>Studies of deuteron-induced neutron-producing are reviewed and the development of electrostatic quadrupole technology for BNCT is highlighted.</div></div>","PeriodicalId":8096,"journal":{"name":"Applied Radiation and Isotopes","volume":"220 ","pages":"Article 111725"},"PeriodicalIF":1.6,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143509480","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The impact of TeO2 content on radiation shielding properties for zinc-tellurite borosilicate glasses","authors":"A.S. Mostafa ,&nbsp;M.M. Kassab ,&nbsp;M.M. Radwan ,&nbsp;Ahmed M. Al Kaisy ,&nbsp;A. Abdel-Latif M","doi":"10.1016/j.apradiso.2025.111742","DOIUrl":"10.1016/j.apradiso.2025.111742","url":null,"abstract":"<div><div>A novel Zinc-Tellurite borosilicate (ZTBS) glass system was successfully synthesized via the melt quench process. Its chemical composition is represented by the formula (44SiO₂-25B₂O₃-18Na₂O-6CaO-1ZrO₂-(6-x)ZnO-xTeO₂), and its weight fraction (x = 0, 2, 4, 6 wt%). The shielding properties, there is perfect agreement between the results of the theoretical calculation of the mass attenuation coefficient using the Phy-X/PSD and the compatible values derived from the WinXCom databases. Further, several photon shielding parameters were computed in the 15 keV–15 MeV energy range, including the mass attenuation coefficient (MAC), half value layer (HVL), mean free path (MFP), exposure buildup factor (EBF), and effective atomic number (Z_eff). The preferred sample for gamma ray shielding is the sample with the highest TeO₂ concentration (ZTBS3), according to the results. ZTBS3 glass samples have greater MAC and HVL values than other published borosilicate glasses at 662.61 k eV photon energy which reaches 0.07626 cm⁻²/g and 3.429 cm respectively. Also, LAC values is higher in the sample with the largest concentration of TeO₂. Furthermore, the computed HVL and MFP were lower than those of regular concrete. The shielding results indicate that the newly developed transparent ZTBS glasses compositions that are lightweight and have good shielding properties that may be suitable in shielding applications. Depending on the application, the ratio of TeO₂ additive should be balanced between improved shielding and glass stability features.</div></div>","PeriodicalId":8096,"journal":{"name":"Applied Radiation and Isotopes","volume":"220 ","pages":"Article 111742"},"PeriodicalIF":1.6,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143479018","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study of the reduction in the time of counting in spectrometric analysis using HPGe detector for samples of fresh organic foods","authors":"Nadia Rodrigues dos Santos ,&nbsp;Alessandro Mariano Domingues ,&nbsp;Izabella Soares de Souza ,&nbsp;Carlos Omar Pastrana Orejuela ,&nbsp;Ademir Xavier da Silva ,&nbsp;Edmilson Monteiro de Souza ,&nbsp;Inayá Corrêa Barbosa Lima","doi":"10.1016/j.apradiso.2025.111744","DOIUrl":"10.1016/j.apradiso.2025.111744","url":null,"abstract":"<div><div>The quantification of natural radionuclides within environmental matrices is commonly executed via gamma spectrometry, employing HPGe detector. Variability in counting times is reported in the literature, often predicated on empirical knowledge. This study aims to estimate a reduction in counting time in the process of analyzing activity concentration of ⁴⁰K radionuclide, based on reducing the percentage variation of their uncertainties, in some fresh and frozen organic vegetables, grown in an environmental conservation unit. For each sample, 10 count measurements were taken at regular intervals of 3600 s over a period of 36,000 s using the HPGe detector and the Genie 2000 data acquisition software. The background spectrum was obtained at the same time intervals and with the same sample geometry. Efficiency curves and self-attenuation corrections were performed using the LabSOCS software. Considering the counting times 25,200 s and 36,000 s, the determined ⁴⁰K activity concentration (Bq.kg⁻¹) for lady's finger banana, cabbage and carrot were (107 ± 16.49; 109 ± 16.35), (79 ± 12.77; 81 ± 12.62) and (100 ± 15.44; 102 ± 15.36), respectively. The activity concentrate uncertainty starts to vary slightly and began to stabilize from 25,200s onwards. The results indicate that considering the employed methodology, extending the counting time for fresh and frozen organic foods would not yield a significant advantage over reducing the detector operation time.</div></div>","PeriodicalId":8096,"journal":{"name":"Applied Radiation and Isotopes","volume":"220 ","pages":"Article 111744"},"PeriodicalIF":1.6,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143471353","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessment of organ dose for adult undergoing CT examinations: Comparison of three software applications using Monte Carlo simulation","authors":"Maria Hakme ,&nbsp;Ziad Francis ,&nbsp;Chadia Rizk ,&nbsp;Georges Fares","doi":"10.1016/j.apradiso.2025.111740","DOIUrl":"10.1016/j.apradiso.2025.111740","url":null,"abstract":"<div><div>Understanding organ dose during CT scans is crucial due to cancer risks from low-level radiation exposure. This study aims to analyze and compare different methods for estimating CT organ doses in adult male and female patients, assessing the compatibility of NCICT with standard phantoms and NCICT with body size adjustment with GEANT4 simulations. It also evaluates the impact of different CT manufacturers on organ dose calculations. Previous research used various phantoms to represent organ doses across age groups. This study utilizes DICOM images from real adult patients undergoing CT scans to evaluate organ dose using the GEANT4 simulation toolkit. A retrospective analysis of 240 CT scans (head, chest, and abdomen-pelvis) compared GEANT4 dose estimates to the software tool NCICT. Data from Siemens and Philips CT scanners were included. Organ doses for 34 organs were calculated using Siemens patient DICOM data, while Philips estimates made using only NCICT with body size adjustment. Statistical analysis assessed differences in organ doses by gender and scanner type. Organ doses for the brain, spinal cord, and liver were higher in females (48.1, 4.9, and 6.7 mGy) compared to males (42.5, 4.4, and 6.3 mGy). NCICT with body size adjustment estimates were more consistent with GEANT4 (differences up to 18%) compared to NCICT with standard phantoms (differences up to 46%). Notable variations were found between Siemens and Philips scanners, despite identical detector rows. Accurate models and scanner-specific differences are critical for reliable radiation dose assessments, emphasizing the need for tailored dosimetry to enhance patient safety.</div></div>","PeriodicalId":8096,"journal":{"name":"Applied Radiation and Isotopes","volume":"220 ","pages":"Article 111740"},"PeriodicalIF":1.6,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143474664","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Composite detectors as a beneficial tool for dose measurements of secondary radiation in boron neutron capture therapy","authors":"V. Gorbenko ,&nbsp;T. Zorenko ,&nbsp;S. Witkiewicz-Łukaszek ,&nbsp;B. Sobiech ,&nbsp;P. Bilski ,&nbsp;M. Gryziński ,&nbsp;J. Winiecki ,&nbsp;Yu. Zorenko","doi":"10.1016/j.apradiso.2025.111726","DOIUrl":"10.1016/j.apradiso.2025.111726","url":null,"abstract":"<div><div>A concept for studying the effects of secondary radiation in boron neutron capture therapy based on the application of multilayer composite scintillators was proposed in this work. Such composite scintillators can be used for simultaneous measurement of the dose of various types of ionizing radiation, including ⁷Li ions, α-particles and γ-rays. For this purpose, three types of composite detectors based on the single crystalline films and single crystals of Y₃Al₅O₁₂ and Lu₃Al₅O₁₂ garnets, doped with Ce³⁺, Pr³⁺ and Sc³⁺ ions, were produced using the liquid phase epitaxy growth method. The scintillation reader for in-situ dose measurement of different radiation components at BNCT was constructed based on the developed types of composite detectors. The possibility of recording various radiation components was demonstrated using: 1) the differences in the pulse height spectra and scintillation decay kinetics of various parts of composite detectors under excitation by α-particles of ²³⁹Pu source; 2) the difference in the radioluminescence spectra of films and crystal scintillators in composite detectors under excitation by γ-rays of ¹⁹²Ir (392 keV) source. The obtained results were discussed for choice of the best registration methods and types of composite detectors for direct dose measurements of secondary radiation under excitation with thermal neutrons.</div></div>","PeriodicalId":8096,"journal":{"name":"Applied Radiation and Isotopes","volume":"220 ","pages":"Article 111726"},"PeriodicalIF":1.6,"publicationDate":"2025-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143488273","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Accelerator based-BNCT facilities worldwide and an update of the Buenos Aires project","authors":"M.E. Capoulat ,&nbsp;D. Cartelli ,&nbsp;M. Baldo ,&nbsp;J.C. Suarez Sandín ,&nbsp;M.F. Del Grosso ,&nbsp;A. Bertolo ,&nbsp;P. Gaviola ,&nbsp;M. Igarzábal ,&nbsp;G. Conti ,&nbsp;M. Gun ,&nbsp;A.A. Valda ,&nbsp;D.M. Minsky ,&nbsp;F. Sala ,&nbsp;S. Incicco ,&nbsp;J. Erhardt ,&nbsp;A.J. Kreiner","doi":"10.1016/j.apradiso.2025.111723","DOIUrl":"10.1016/j.apradiso.2025.111723","url":null,"abstract":"<div><div>Globally, there are several AB-BNCT facilities, either operational and already treating patients and others still under development. These facilities range from high-energy 30 MeV cyclotrons using the ⁹Be(p,n) reaction, medium-energy RFQ-DTL accelerators operating at 8–10 MeV with the same reaction, low-energy electrostatic machines (Tandem and single-ended) using the ⁷Li(p,n) reaction at approximately 2.5 MeV. Additionally, the low-energy ESQ accelerator developed in Argentina, employs the ⁹Be(d,n) or the ¹³C(d,n) reactions at 1.45 MeV. This paper presents updated insights into Argentina's AB-BNCT project while also providing a global overview of AB-BNCT developments.</div></div>","PeriodicalId":8096,"journal":{"name":"Applied Radiation and Isotopes","volume":"219 ","pages":"Article 111723"},"PeriodicalIF":1.6,"publicationDate":"2025-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143429467","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparison of dose distribution with and without reflecting heterogeneous boron distribution using 18F-BPA positron emission tomography in boron neutron capture therapy","authors":"Yuta Kobayashi ,&nbsp;Satoshi Nakamura ,&nbsp;Mihiro Takemori ,&nbsp;Tetsu Nakaichi ,&nbsp;Yasunori Shuto ,&nbsp;Kimiteru Ito ,&nbsp;Kana Takahashi ,&nbsp;Tairo Kashihara ,&nbsp;Miki Yonemura ,&nbsp;Hana Endo ,&nbsp;Kouji Kunito ,&nbsp;Hiroyuki Okamoto ,&nbsp;Takahito Chiba ,&nbsp;Hiroki Nakayama ,&nbsp;Riki Oshika ,&nbsp;Hironori Kishida ,&nbsp;Jun Itami ,&nbsp;Hiroaki Kurihara ,&nbsp;Hiroshi Igaki","doi":"10.1016/j.apradiso.2025.111720","DOIUrl":"10.1016/j.apradiso.2025.111720","url":null,"abstract":"<div><div>This study investigated the dosimetric impact of implementing heterogeneous boron distribution into dose evaluations on tumors in BNCT. The study involved 27 patients who underwent ¹⁸F-BPA PET/CT scans. Dose evaluations were performed using various methods reflecting boron concentrations on CT images. The conventional dose evaluations, which reflected uniform boron concentration in blood of 25 ppm and a constant tumor-to-blood (T/B) ratio of 3.5, were compared with individual dose evaluations, which reflected the blood boron concentration and T/B ratio calculated from ¹⁸F-BPA in each patient. The heterogeneous tumoral dose distribution was also compared, revealing the dosimetric impact of the boron distribution calculated from each voxel of ¹⁸F-BPA. The spatial correspondence between ¹⁸F-BPA and dose distribution was compared using metabolic tumor volume (MTV) from ¹⁸F-BPA and isodose volume from the heterogeneous dose distribution. Results showed that the median blood boron concentration and T/B ratio calculated from ¹⁸F-BPA were 25.57 (23.90–27.84) ppm and 3.75 (2.54–4.59), respectively, comparable to those in the conventional dose evaluations. All dose indices in the heterogeneous tumoral dose evaluations were significantly lower than those in the conventional dose evaluations (p &lt; 0.01). However, the spatial correspondence between the ¹⁸F-BPA and the dose distribution was not observed in the dice similarity coefficients of both MTV40-40% isodose volume and MTV50-50% isodose volume. In conclusion, the study confirmed the validity of applying the boron concentration calculated from ¹⁸F-BPA to the dose evaluation for a patient in BNCT. The differences might be associated with non-inter-patient variations of ¹⁸F-BPA, but the conventional dose evaluations mainly focused on the high boron concentration area within the tumor. Furthermore, the discrepancies in the patients were also observed between the ¹⁸F-BPA distribution and the heterogeneous dose distribution. Therefore, this study suggested that the indications for BNCT should consider not only ¹⁸F-BPA but also the dose distributions, which could reflect the heterogeneous tumoral boron distribution.</div></div>","PeriodicalId":8096,"journal":{"name":"Applied Radiation and Isotopes","volume":"219 ","pages":"Article 111720"},"PeriodicalIF":1.6,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143429466","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A review of photon beam skyshine studies from medical megavoltage accelerators","authors":"Mikaeil Molazadeh ,&nbsp;Hosein Ghiasi","doi":"10.1016/j.apradiso.2025.111716","DOIUrl":"10.1016/j.apradiso.2025.111716","url":null,"abstract":"<div><div>This review examines the literature on the assessment of photon beam skyshine dose rates in medical accelerator radiotherapy with an energy range of 4-25 MV. The selected studies focus on medical accelerators within radiotherapy facilities and employ various methodologies for calculating photon beam skyshine dose rates. Researchers utilized Monte Carlo (MC) simulations, direct measurements, and empirical methods outlined in NCRP Reports 151 and 51 for skyshine estimations. These NCRP reports have established empirical approaches for calculating skyshine dose rates in linac-based radiotherapy settings. The methodologies adopted by different researchers and their findings were compared and discussed. Among these methods, the one that aligns best with measurements across various studies was identified as the gold standard. Notably, the conclusion drawn from multiple papers indicates that NCRP 151 tends to overestimate skyshine dose rates. Various studies were conducted under different geometries and distances from the X-ray source, and comparisons with other works showed consistent results. However, some discrepancies were noted in the results of skyshine characterization studies. This review encompasses publications related to photon beam skyshine from medical accelerators, highlighting that the primary approaches, NCRP 151 empirical methods, MC simulations, and direct measurements, yield reasonable results when multiple methods are employed.</div></div>","PeriodicalId":8096,"journal":{"name":"Applied Radiation and Isotopes","volume":"219 ","pages":"Article 111716"},"PeriodicalIF":1.6,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143420799","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}