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Design and Implementation of Database Management System for Mineral, Rock and Fossil Specimen Resources
Zhiyuan Wu,
Mingyue He,
Mei Yang
Issue:
Volume 12, Issue 4, August 2023
Pages:
82-89
Received:
6 June 2023
Accepted:
26 June 2023
Published:
6 July 2023
Abstract: According to the demand for standardized input, management and sharing of mineral, rock and fossil specimen data, based on the mineral, rock and fossil specimen description standards and specifications released by National Infrastructure of Mineral, Rock and Fossil for Science and Technology (NIMRF), a database management system for mineral, rock and fossil specimen resources was designed and developed. In this paper, the overall architecture of the database system is designed using the front-end and back-end separation model and three-layer structure, and then relevant description standards and specifications are integrated into the design of the mineral, rock and fossil specimen database. Finally, based on current popular open source frameworks such as Spring Boot, Vue, etc., the management system has been developed. It realizes management functions of adding, deleting, updating and querying for the mineral, rock and fossil specimen database and also includes function of system management. In this way, a uniform mineral, rock and fossil specimen resource database can be built, which lay a solid foundation for data sharing of mineral, rock and specimen resources on the NIMRF platform. The application of the database management system is helpful to promote material sharing by information sharing, and improve the utilization rate of existing specimen resources.
Abstract: According to the demand for standardized input, management and sharing of mineral, rock and fossil specimen data, based on the mineral, rock and fossil specimen description standards and specifications released by National Infrastructure of Mineral, Rock and Fossil for Science and Technology (NIMRF), a database management system for mineral, rock a...
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Spectral Reflectance and Algal Bloom Monitoring of Lake Victoria Using Remote Sensing Techniques, Winum Gulf of Kenya
Vincent Ogembo,
Gavin Akinyi Mohamed
Issue:
Volume 12, Issue 4, August 2023
Pages:
90-98
Received:
22 May 2023
Accepted:
9 June 2023
Published:
11 July 2023
Abstract: The study was aimed at measuring the in situ spectral reflectance of Lake Victoria fresh water which contains algal blooms and different suspended solids. Reflectance spectra of wavelengths 340-1,018 nm were collected from Lake Victoria fresh water using a portable spectroradiometer. The data was collected on a cloud free day between 0912 to 1022 hours. Sunlight was used as a source of illumination while dark surface was applied as control to obtain a near-normal angle of observation at a Pacific Daylight Time (PDT) on 27th October 2022. Google Earth Engine (GEE) was used in analyzing the satellite images of Lake Victoria, Winam Gulf with NDCI index technique which provides an estimation of the chlorophyll-a concentration. The averaged spectrum of the Lake Victoria water showed reflectance maxima from 580-710 nm and reflectance minima near 430 nm and above 740 nm wavelengths. This study showed that the higher the NDCI value, the higher the concentration of chlorophyll-a, the more sever the algal bloom. On average, the concentration of chlorophyll-a was high at 33-50mg/m3 and highest values recorded between January and February of every year due to high temperatures during the dry season. The Winum Gulf of Lake Victoria is characterized by increasing eutrophication arising from increased anthropogenic activities on the shores of the lake. Major factors contributing to the increased eutrophication include Urban sprawl, industrial loads and agricultural activities. The study, therefore, presents the algal bloom situation and spectral reflectance of the lake under the influence of human activities surrounding Lake Victoria.
Abstract: The study was aimed at measuring the in situ spectral reflectance of Lake Victoria fresh water which contains algal blooms and different suspended solids. Reflectance spectra of wavelengths 340-1,018 nm were collected from Lake Victoria fresh water using a portable spectroradiometer. The data was collected on a cloud free day between 0912 to 1022 h...
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Discussion on Causes of Ubranium Ore and the Occurrence Characteristics of Ubranium Deposits in Lujing Area
Jiapeng Tian,
Jiayong Pan,
Xirong Wang,
Chunrong Pan,
Fujun Zhong,
Jing Hao
Issue:
Volume 12, Issue 4, August 2023
Pages:
99-110
Received:
20 June 2023
Accepted:
10 July 2023
Published:
21 July 2023
Abstract: The Lujing uranium ore field is one of the four major uranium ore fields in the Zhuguangshan rock mass. The tectonic position of Lujing uranium ore field is located in the South China multiphase composite Orogenic belt formed by the combination of the Huaxia plate and the Yangtze plate, which belongs to the Wugong-Zhuguang fault uplift area of the Cathaysian plate. The article explores the occurrence characteristics of uranium minerals and the genesis of uranium ore in the deposit by collecting samples from the Lujing uranium ore field, observing and identifying them under an electron microscope, and analyzing and testing them with an electron probe. The uranium minerals in the Lujing uranium deposit are mainly uranite, pitchblende and uranium thorite, all in the form of independent uranium minerals. In addition, a small amount of uranium exists in the form of isomorphism in thorite, Rutile, zircon, Xenotime and other accessory minerals. Uranium ore and pitchblende are the main uranium bearing minerals in the study area. The uranium ore mineral assemblage is mainly composed of four types: uranium ore metal sulfide, uranium ore fluorite, pitchblende uranium ore Pyrite, and uranium ore quartz. The characteristics of the paragenetic assemblage of uranium ore and other minerals reflect that the temperature of uranium mineralization is at the middle low temperature mineralization stage. Uranium ore is mostly formed and reduced in the environment, and the formation age of uranium ore is generally later than that of Pyrite. The main genesis of uranium ore is the transformation of primary uranium ore into pitchblende, which is then converted into uranium ore again through a reducing environment. Uranium in uranium bearing minerals is reactivated to form uranium ore.
Abstract: The Lujing uranium ore field is one of the four major uranium ore fields in the Zhuguangshan rock mass. The tectonic position of Lujing uranium ore field is located in the South China multiphase composite Orogenic belt formed by the combination of the Huaxia plate and the Yangtze plate, which belongs to the Wugong-Zhuguang fault uplift area of the ...
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Applying the Fundamental Principles of Natural Hazards to the Study of Tsunamis: Case Study of the 2004 Tsunami in Sumatra
Issue:
Volume 12, Issue 4, August 2023
Pages:
111-115
Received:
10 May 2023
Accepted:
29 May 2023
Published:
31 July 2023
Abstract: For the past seven decades, researchers of natural environmental hazards have been trying to find answers to fundamental questions answers to which will lead to a better understanding of the characteristics, impacts, and responses to hazards. This has led to the development of five fundamental principles of natural hazards as discussed in the literature. Research on the fundamental principles of natural environmental hazards is far from being described as rudimentary with a vast amount of literature to warrant this claim. However, the so-called principles of natural hazards are being discussed in the literature in isolation, without relating them to a particular hazard to facilitate a practical understanding and applicability and this is the gap in the knowledge that this paper seeks to fill. This paper applies the five fundamental principles of natural hazards to help explain tsunamis based on the review of relevant and related literature. The analysis of the findings of the different works in this area shows that all the fundamental principles of natural hazards are applicable in the explanation of the causes, characteristics, impacts, and reducing vulnerability to not only tsunamis but also other related hazards such as earthquakes and floods. These findings highlight the relevance of the use of scientific methods in studying natural hazards as it facilitates a better understanding of the nature and characteristics of natural environmental hazards which will aid in reducing vulnerability to and the impacts of such hazards.
Abstract: For the past seven decades, researchers of natural environmental hazards have been trying to find answers to fundamental questions answers to which will lead to a better understanding of the characteristics, impacts, and responses to hazards. This has led to the development of five fundamental principles of natural hazards as discussed in the liter...
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