scholarly journals Nghiên cứu và phân tích nguồn gốc ô nhiễm không khí ở thành phố Huế thông qua rêu Barbular bằng phần mềm Statistica 8.0

2019 ◽  
Vol 16 (6) ◽  
pp. 107
Author(s):  
Đoàn Phan Thảo Tiên ◽  
Trịnh Thị Thu Mỹ ◽  
Frontasyeva M.V ◽  
Lê Hồng Khiêm ◽  
Nguyễn An Sơn ◽  
...  
Keyword(s):  
Factor Analysis ◽  
Neutron Activation Analysis ◽  
Activation Analysis ◽  
Neutron Activation ◽  
Viet Nam ◽  
Icp Vegetation

Việt Nam là một trong những nước có mức độ ô nhiễm nghiêm trọng, đặc biệt là ô nhiễm không khí. Từ năm 2014, Việt Nam đã tham gia vào chương trình điều tra ô nhiễm không khí qua cây rêu (ICP Vegetation Programme Coordination Centre. Rêu được chọn làm đối tượng nghiên cứu ô nhiễm không khí. Bài báo này tiến hành nghiên cứu đo nồng độ nguyên tố trong mười sáu mẫu rêu Barbular thu thập tại thành phố Huế, được phân tích bằng phương pháp phân tích kích hoạt neutron (Neutron Activation Analysis) tại Viện Nghiên cứu Hạt nhân Dubna – Nga. Kết quả nồng độ các nguyên tố trong mẫu rêuđược nghiên cứu bằng phương pháp phân tích các nhân tố – Factor Analysis của phần mềm Statistica 8.0 nhằm mục đíchtìm ra mỗi liên hệ giữa nguồn phát ô nhiễm và nguồn nhận.

Investigation of cross sections of reactions used in neutron activation analysis

Kerntechnik ◽  
2011 ◽  
Vol 76 (2) ◽  
pp. 136-141 ◽  
Author(s):  
E. Tel ◽  
M. Şahan ◽  
F. A. Uğur ◽  
H. Şahan ◽  
A. Aydin
Keyword(s):  
Neutron Activation Analysis ◽  
Activation Analysis ◽  
Neutron Activation ◽  
Cross Sections

Trace Element Contents in Thyroid Cancer Investigated by Instrumental Neutron Activation Analysis

2018 ◽  
Vol 1 (1) ◽  
pp. 1-13
Keyword(s):  
Thyroid Cancer ◽  
Neutron Activation Analysis ◽  
Instrumental Neutron Activation Analysis ◽  
Activation Analysis ◽  
Neutron Activation ◽  
Trace Element ◽  
Thyroid Tissue ◽  
Tissue Levels ◽  
Trace Element Contents ◽  
Element Contents

Background: Thyroid cancer is an internationally important health problem. The aim of this exploratory study was to evaluate whether significant changes in the thyroid tissue levels of Ag, Co, Cr, Fe, Hg, Rb, Sb, Sc, Se, and Zn exist in the malignantly transformed thyroid. Methods: Thyroid tissue levels of ten trace elements were prospectively evaluated in 41 patients with thyroid malignant tumors and 105 healthy inhabitants. Measurements were performed using non-destructive instrumental neutron activation analysis with high resolution spectrometry of long-lived radionuclides. Tissue samples were divided into two portions. One was used for morphological study while the other was intended for trace element analysis. Results: It was found that contents of Ag, Co, Cr, Hg, and Rb were significantly higher (approximately 12.8, 1.4, 1.6, 19.6, and 1.7 times, respectively) in cancerous tissues than in normal tissues. Conclusions: There are considerable changes in trace element contents in the malignantly transformed tissue of thyroid.

Elemental analysis of medicinal plants from different sites by instrumental neutron activation analysis

2016 ◽  
Vol 5 (03) ◽  
pp. 4892 ◽  
Author(s):  
Ratna Raju M.* ◽  
Madhusudhana Rao P. V. ◽  
Seshi Reddy T. ◽  
Raju M. K. ◽  
Brahmaji Rao J. S. ◽  
...  
Keyword(s):  
Neutron Activation Analysis ◽  
Instrumental Neutron Activation Analysis ◽  
Activation Analysis ◽  
Medicinal Plants ◽  
Neutron Activation ◽  
Gamma Ray ◽  
Elemental Content ◽  
Soil Composition ◽  
Gamma Ray Spectrometer ◽  
Instrumental Neutron Activation

A study was undertaken to evaluate the inorganic elements for humans in two Indian medicinal plants leaves, namely Sphaeranthus indicus, and Cassia fistula by Instrumental Neutron Activation Analysis (INAA). INAA experiment was performed by using 20 kW KAMINI Reactor at Indira Gandhi Centre for Atomic Research (IGCAR), Kalpakkam. The emitted gamma rays were measured using gamma ray spectrometer. The concentrations of Al, Br, Ca, Fe, K, La, Mg, Mn, Na, Sc, V and Zn were determined in the selected medicinal plants. The medicinal leaves are using in treatment of various important ailments. The elemental content in selected medicinal leaves is various proportions depending on the soil composition, location of plant specimen and the climate in which the plant grows.

scholarly journals Neutron activation analysis of archeological artifacts using the ISIS pulsed neutron source

AIP Advances ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 075005
Author(s):  
Carlo Cazzaniga ◽  
Antonella Scherillo ◽  
Anna Fedrigo ◽  
Davide Raspino ◽  
Francesco Grazzi ◽  
...  
Keyword(s):  
Neutron Activation Analysis ◽  
Activation Analysis ◽  
Neutron Activation ◽  
Neutron Source ◽  
Archeological Artifacts ◽  
Pulsed Neutron ◽  
Pulsed Neutron Source
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