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Gupeiite Body in the Siberian Taiga (the Zone of Passage of the Tunguska Meteorite and the Vitim Bollid) 西伯利亚针叶林中的古佩岩体(通古斯陨石与受害者波利德的穿越带)

Natural Resources Pub Date : 2022-01-01 DOI: 10.4236/nr.2022.132004

N. Savva, P. Minyuk, T. V. Subbotnikova

{"title":"Gupeiite Body in the Siberian Taiga (the Zone of Passage of the Tunguska Meteorite and the Vitim Bollid)","authors":"N. Savva, P. Minyuk, T. V. Subbotnikova","doi":"10.4236/nr.2022.132004","DOIUrl":"https://doi.org/10.4236/nr.2022.132004","url":null,"abstract":"Many years have passed since the two cosmic bodies of the Tunguska meteorite and the Vitim bollid fell to Earth, but so far the substance of these bodies has not been found on Earth. Therefore, each metal body found on the territory of their passage is of particular interest. The body of iron silicide weighing 12 kg was studied, which was accidentally discovered by a hunter of the village of Kyker in the Siberian taiga on the right bank of the Nercha River, Tungokochensky district, Trans-Baikal Territory. Coordinates of the place of discovery are: 53˚19'N lat, 116˚19'E long. The territory is located in the zone of the passage of the Tunguska meteorite and the Vitim bollid, 25 km from the hunting village of Green Lake. The body is named “Ilekta” after the nearest stream flowing into the Nercha River. The composition and magnetic properties of the exotic find have been determined. It is established that its main mass is composed of iron silicide, gupesiite Fe3Si (zussite?) and contains inclusions of needle-like rhabdite. On the surface, the body is covered with a melting crust, with signs of boiling, a bubbly structure and a film of clay minerals of terrestrial origin. In the molten porous crust, eutec-tic-schreibersite-gupeiite is observed, and rare titanium carbide crystals are also noted. The magnetic susceptibility of the samples is not uniform (286.6 -461.8 10-6E-06 m 3 /kg). It is assumed that a drop of melt separated from the flying space body, and experienced overheating and boiling of the surface layer in the dense layers of the atmosphere.","PeriodicalId":19086,"journal":{"name":"Natural Resources","volume":"122 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81815474","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Flood Generation Mechanisms and Potential Drivers of Flood in Wabi-Shebele River Basin, Ethiopia 埃塞俄比亚Wabi-Shebele河流域洪水发生机制及潜在驱动因素

Natural Resources Pub Date : 2022-01-01 DOI: 10.4236/nr.2022.131003

Fraol Abebe Wudineh, S. Moges, B. Kidanewold

{"title":"Flood Generation Mechanisms and Potential Drivers of Flood in Wabi-Shebele River Basin, Ethiopia","authors":"Fraol Abebe Wudineh, S. Moges, B. Kidanewold","doi":"10.4236/nr.2022.131003","DOIUrl":"https://doi.org/10.4236/nr.2022.131003","url":null,"abstract":"Flood is a natural process generated by the interaction of various driving factors. Flood peak flows, flood frequency at different return periods, and potential driving forces are analyzed in this study. The peak flow of six gauging stations, with a catchment area ranging from 169 - 124,108 km 2 and sufficient observed streamflow data, was selected to develop threshold (3 rd quartile) magnitude and frequency (POTF) that occurred over ten years of records. Sixteen Potential climatic, watershed and human driving factors of floods in the study area were identified and analyzed with GIS, Pearson’s correlation, and Principal Correlation Analysis (PCA) to select the most influential factors. Eight of them (MAR, DA, BE, VS, sand, forest AGR, PD) are identified as the most significant variables in the flood formation of the basin. Moreover, mean annual rainfall (MAR), drainage area (DA), and lack of forest cover are explored as the principal driving factors for flood peak discharge in Wabi-Shebele River Basin. Fi-nally, the study resulted in regression equations that helped plan and design different infrastructure works in the basin as ungauged catchment empirical equations to compute Q MPF , Q 5 , Q 10 , Q 50 , and Q 100 using influential climate, watershed, and human driving factors. The results of these empirical equations are also statistically accepted with a high significance correlation (R 2 > 0.9).","PeriodicalId":19086,"journal":{"name":"Natural Resources","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81048394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Physico-Chemical Characterization of Sludge from the Goudel Drinking Water Production Plant in Niamey (Niger) 尼日尔尼亚美Goudel饮用水生产厂污泥理化特性研究

Natural Resources Pub Date : 2022-01-01 DOI: 10.4236/nr.2022.1310014

Ibrahim Soumaïla Siddo, Mahaman Moustapha Adamou, Fayçal Moumouni Abou

{"title":"Physico-Chemical Characterization of Sludge from the Goudel Drinking Water Production Plant in Niamey (Niger)","authors":"Ibrahim Soumaïla Siddo, Mahaman Moustapha Adamou, Fayçal Moumouni Abou","doi":"10.4236/nr.2022.1310014","DOIUrl":"https://doi.org/10.4236/nr.2022.1310014","url":null,"abstract":"Population growth and increasing needs make our current societies a considerable source of environmental threats. Going towards sustainable cities where harmony exists between economic, socio-cultural and environmental issues is a necessity that is essential if we want to bequeath a livable world to future generations. Cities produce huge quantities of domestic and industrial waste, the management of which is becoming a growing problem for city managers. Located on the banks of the Niger River, the city of Niamey, capital of the Republic of Niger, is supplied with drinking water from this river. Significant quantities of sludge are produced by the plant following the treatment of this water. This study focuses on the physico-chemical characterization of this sludge which is now directly discharged into the Niger River. A total of 12 samples of pasty sludge taken from the pre-settling ponds were analyzed. The samples were previously dried, crushed, sieved and packaged. Physical (pH, EC and particle size), chemical (Ca, Mg, Na, K, CEC, AE, P, C, MO and N) and metallic trace elements (Pb, Ni, Cu, Zn, Cd, Mn) parameters and Al) were analyzed in the laboratory. The results show that the sludge is weakly acidic (pH between 4.16 and 5.71), conductive (<0.35 mS/cm) and rich in fine elements (12.1% to 77.71% clay). The nutrient content is low in nitrogen (<0.25%), phosphorus (<2.5 ppm), potassium (between 1 to 188 Mèq/100g) and organic matter (less than 2.88%). The concentrations of ETM comply with the values admissible in residual materials (French decree of 08/01/1998). This sludge can be recovered, especially in agriculture.","PeriodicalId":19086,"journal":{"name":"Natural Resources","volume":"20 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89773038","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Brown Trout Redd Locations in the Northernmost Section of Spearfish Creek in Spearfish, South Dakota, USA 褐鳟鱼雷德地点在Spearfish，美国南达科他州的Spearfish溪的最北段

Natural Resources Pub Date : 2022-01-01 DOI: 10.4236/nr.2022.131001

Michael J. Robidoux, J. Voorhees, A. Domagall, M. E. Barnes

引用次数: 0

Analysis of Forest Waste Management and Recycling Potential in Nigeria 尼日利亚森林废物管理和回收潜力分析

Natural Resources Pub Date : 2022-01-01 DOI: 10.4236/nr.2022.1310013

Cynthia C. Ogbu, Y. Twumasi, Z. H. Ning, G. N. Attamah, V. I. Ezeaku, Opeyemi I. Oladigbolu

引用次数: 0

Effect of Low Gamma Irradiation on the Germination and Morphological Characteristics of Broad Beans (Vicia faba L.), Mung Beans (Vigna radiata L.), and Peas (Pisum sativum L.) Seedlings 低伽马辐射对蚕豆、绿豆和豌豆发芽及形态特征的影响幼苗

Natural Resources Pub Date : 2022-01-01 DOI: 10.4236/nr.2022.135008

Abidemi Atteh, A. Adeyeye