In order to deal with the special spatio-temporal environmental changes encountered in the process of open-cast mining,taking Huolinhe No.1 Open-cast Mine as the research object,this paper studied its typical problems...In order to deal with the special spatio-temporal environmental changes encountered in the process of open-cast mining,taking Huolinhe No.1 Open-cast Mine as the research object,this paper studied its typical problems in river reconstruction and cultural relics protection.The study focused on eight key core aspects,including the design optimization of the spatial layout of the mining area,the accurate estimation of the mineral resources reserves,the scientific theoretical demonstration of the mining scale,the fine analysis and calculation of the stripping ratio,the comprehensive consideration of the transport distance and efficiency,the accurate judgment of the best time for the implementation of the transformation,the analysis and evaluation of the slope stability,and the overall planning of the production system.The results show that the extracted problem-solving strategies and scheme system for special mining conditions can not only provide specific and practical guidance for Huolinhe No.1 Open-cast Mine,but also serve as a valuable reference and practical reference for other open-cast mine enterprises facing similar challenges.展开更多
Mining heritage in Portugal is an interesting case for architectural assessment and research;not only due to the fact that it is considered a minor architectural heritage in a rural environment compared with other cas...Mining heritage in Portugal is an interesting case for architectural assessment and research;not only due to the fact that it is considered a minor architectural heritage in a rural environment compared with other cases of industrial heritage(often in urban settings),but also to the fact that most plans and design pieces of the past interventions that constitute an essential part of understanding the mining settlements and dwellings,are forever lost or expecting to be catalogued.Despite these challenges,the research provided the elements to design a territorial proposal“Cultural Landscape of Alentejo Pyrite”based on three mining sites(Lousal,Aljustrel and S.Domingos-Pomar鉶)–within the Iberian Pyrite,while conveying a methodological approach for mining landscapes mainly illustrated by the proposal’s theme unit of Lousal.展开更多
Copper-indium-gallium-diselenide(CIGS)is a fast-evolving commercial solar cell.The firm demand for global carbon reduction and the rise of potential environmental threats necessitate spent CIGS solar cell recycling.In...Copper-indium-gallium-diselenide(CIGS)is a fast-evolving commercial solar cell.The firm demand for global carbon reduction and the rise of potential environmental threats necessitate spent CIGS solar cell recycling.In this paper,the sources and characteristics of valuable metals in spent CIGS solar cells were reviewed.The potential environmental impacts of CIGS,including service life,critical material,and material toxicity,were outlined.The main recovery methods of valuable metals in the various types of spent CIGS,including hydrometallurgy,pyrometallurgy,and comprehensive treatment processes,were compared and discussed.The mechanism of different recovery processes was summarized.The challenges faced by different recycling processes of spent CIGS were also covered in this review.Finally,the economic viability of the recycling process was assessed.The purpose of this review is to provide reasonable suggestions for the sustainable development of CIGS and the harmless disposal of spent CIGS.展开更多
Purpose: The use of in vitro cell culture and experimentation is a cornerstone of biomedical research, however, more attention has recently been given to the potential consequences of using such artificial basal media...Purpose: The use of in vitro cell culture and experimentation is a cornerstone of biomedical research, however, more attention has recently been given to the potential consequences of using such artificial basal medias and undefined supplements. As a first step towards better understanding and measuring the impact these systems have on experimental results, we use text mining to capture typical research practices and trends around cell culture.Design/methodology/approach: To measure the scale of in vitro cell culture use, we have analyzed a corpus of 94,695 research articles that appear in biomedical research journals published in ScienceDirect from 2000–2018. Central to our investigation is the observation that studies using cell culture describe conditions using the typical sentence structure of cell line, basal media, and supplemented compounds. Here we tag our corpus with a curated list of basal medias and the Cellosaurus ontology using the Aho-Corasick algorithm. We also processed the corpus with Stanford CoreNLP to find nouns that follow the basal media, in an attempt to identify supplements used. Findings: Interestingly, we find that researchers frequently use DMEM even if a cell line's vendor recommends less concentrated media. We see long-tailed distributions for the usage of media and cell lines, with DMEM and RPMI dominating the media, and HEK293, HEK293 T, and HeLa dominating cell lines used. Research limitations: Our analysis was restricted to documents in ScienceDirect, and our text mining method achieved high recall but low precision and mandated manual inspection of many tokens.Practical implications: Our findings document current cell culture practices in the biomedical research community, which can be used as a resource for future experimental design.Originality/value: No other work has taken a text mining approach to surveying cell culture practices in biomedical research.展开更多
The Maanshan Mining Research Institute of theMinistry of Metallurgical Industry is a composite miningscientific research institution,one of the units with rightsof conferring master degree approved by the State Counci...The Maanshan Mining Research Institute of theMinistry of Metallurgical Industry is a composite miningscientific research institution,one of the units with rightsof conferring master degree approved by the State Council,and enjoys foreign autonomous rights for import andexport,It has a staff of 1000,including 500 senior andintermediate technical people(42 professor-rank seniorengineers,and 39 enjoying government special subsidy). The institute has faculties including展开更多
Taita-Taveta County is rich with a wide variety of minerals in the world. Gemstones like Ruby, Tsavorite, Ruby and green garnets have caused many people to migrate to the area. These people came from within the county...Taita-Taveta County is rich with a wide variety of minerals in the world. Gemstones like Ruby, Tsavorite, Ruby and green garnets have caused many people to migrate to the area. These people came from within the county and from other parts of the country, greatly impacting the lifestyle of the local community. There was a need to understand how mining impacts on society and cultural values of a community. This study was carried out in 9 villages which included;Eastleigh A and B, Central, Ndigai, Mungololini, Mukengereni B and C, Mkuki and Kambanga. Respondents from 173 households from the villages were interviewed and discussions from 8 key informants who included: a Manager of Classic Mines, an official of Chawia Mining Community Based Organization (CBO), an individual manual artisanal miner, a retired senior Warden of Kenya Wild Life Service (KWS), Kenya Forest Service Manager (KFS), a gemologist from the Taita Taveta County government, Chief of Mwatate location and the County Director of National Environment Management Authority (NEMA). On a scale of 1 - 4 (1 = strongly disagree, 2 = Disagree, 3 = Agree and 4 = Strongly agree), the respondents agreed that there was a loss of their ancestral land, conflicts, dilution of Taita culture through mixed intermarriages, increased prostitution, alcoholism and high school dropouts. The study recommends review of the legal and policy framework governing mining in community areas and subsequent vigorous enforcement to maintain the good order of the public and to sustain meaningful traditions and culture to ensure conflict resolution and mining site ownership.展开更多
文摘In order to deal with the special spatio-temporal environmental changes encountered in the process of open-cast mining,taking Huolinhe No.1 Open-cast Mine as the research object,this paper studied its typical problems in river reconstruction and cultural relics protection.The study focused on eight key core aspects,including the design optimization of the spatial layout of the mining area,the accurate estimation of the mineral resources reserves,the scientific theoretical demonstration of the mining scale,the fine analysis and calculation of the stripping ratio,the comprehensive consideration of the transport distance and efficiency,the accurate judgment of the best time for the implementation of the transformation,the analysis and evaluation of the slope stability,and the overall planning of the production system.The results show that the extracted problem-solving strategies and scheme system for special mining conditions can not only provide specific and practical guidance for Huolinhe No.1 Open-cast Mine,but also serve as a valuable reference and practical reference for other open-cast mine enterprises facing similar challenges.
文摘Mining heritage in Portugal is an interesting case for architectural assessment and research;not only due to the fact that it is considered a minor architectural heritage in a rural environment compared with other cases of industrial heritage(often in urban settings),but also to the fact that most plans and design pieces of the past interventions that constitute an essential part of understanding the mining settlements and dwellings,are forever lost or expecting to be catalogued.Despite these challenges,the research provided the elements to design a territorial proposal“Cultural Landscape of Alentejo Pyrite”based on three mining sites(Lousal,Aljustrel and S.Domingos-Pomar鉶)–within the Iberian Pyrite,while conveying a methodological approach for mining landscapes mainly illustrated by the proposal’s theme unit of Lousal.
基金financially supported by the Beijing Natural Science Foundation of China (No. 2232038)the National Natural Science Foundation of China (Nos. 52034002 and U1802253)the Fundamental Research Funds for the Central Universities (No. FRF-TT-19-001)
文摘Copper-indium-gallium-diselenide(CIGS)is a fast-evolving commercial solar cell.The firm demand for global carbon reduction and the rise of potential environmental threats necessitate spent CIGS solar cell recycling.In this paper,the sources and characteristics of valuable metals in spent CIGS solar cells were reviewed.The potential environmental impacts of CIGS,including service life,critical material,and material toxicity,were outlined.The main recovery methods of valuable metals in the various types of spent CIGS,including hydrometallurgy,pyrometallurgy,and comprehensive treatment processes,were compared and discussed.The mechanism of different recovery processes was summarized.The challenges faced by different recycling processes of spent CIGS were also covered in this review.Finally,the economic viability of the recycling process was assessed.The purpose of this review is to provide reasonable suggestions for the sustainable development of CIGS and the harmless disposal of spent CIGS.
文摘Purpose: The use of in vitro cell culture and experimentation is a cornerstone of biomedical research, however, more attention has recently been given to the potential consequences of using such artificial basal medias and undefined supplements. As a first step towards better understanding and measuring the impact these systems have on experimental results, we use text mining to capture typical research practices and trends around cell culture.Design/methodology/approach: To measure the scale of in vitro cell culture use, we have analyzed a corpus of 94,695 research articles that appear in biomedical research journals published in ScienceDirect from 2000–2018. Central to our investigation is the observation that studies using cell culture describe conditions using the typical sentence structure of cell line, basal media, and supplemented compounds. Here we tag our corpus with a curated list of basal medias and the Cellosaurus ontology using the Aho-Corasick algorithm. We also processed the corpus with Stanford CoreNLP to find nouns that follow the basal media, in an attempt to identify supplements used. Findings: Interestingly, we find that researchers frequently use DMEM even if a cell line's vendor recommends less concentrated media. We see long-tailed distributions for the usage of media and cell lines, with DMEM and RPMI dominating the media, and HEK293, HEK293 T, and HeLa dominating cell lines used. Research limitations: Our analysis was restricted to documents in ScienceDirect, and our text mining method achieved high recall but low precision and mandated manual inspection of many tokens.Practical implications: Our findings document current cell culture practices in the biomedical research community, which can be used as a resource for future experimental design.Originality/value: No other work has taken a text mining approach to surveying cell culture practices in biomedical research.
文摘The Maanshan Mining Research Institute of theMinistry of Metallurgical Industry is a composite miningscientific research institution,one of the units with rightsof conferring master degree approved by the State Council,and enjoys foreign autonomous rights for import andexport,It has a staff of 1000,including 500 senior andintermediate technical people(42 professor-rank seniorengineers,and 39 enjoying government special subsidy). The institute has faculties including
文摘Taita-Taveta County is rich with a wide variety of minerals in the world. Gemstones like Ruby, Tsavorite, Ruby and green garnets have caused many people to migrate to the area. These people came from within the county and from other parts of the country, greatly impacting the lifestyle of the local community. There was a need to understand how mining impacts on society and cultural values of a community. This study was carried out in 9 villages which included;Eastleigh A and B, Central, Ndigai, Mungololini, Mukengereni B and C, Mkuki and Kambanga. Respondents from 173 households from the villages were interviewed and discussions from 8 key informants who included: a Manager of Classic Mines, an official of Chawia Mining Community Based Organization (CBO), an individual manual artisanal miner, a retired senior Warden of Kenya Wild Life Service (KWS), Kenya Forest Service Manager (KFS), a gemologist from the Taita Taveta County government, Chief of Mwatate location and the County Director of National Environment Management Authority (NEMA). On a scale of 1 - 4 (1 = strongly disagree, 2 = Disagree, 3 = Agree and 4 = Strongly agree), the respondents agreed that there was a loss of their ancestral land, conflicts, dilution of Taita culture through mixed intermarriages, increased prostitution, alcoholism and high school dropouts. The study recommends review of the legal and policy framework governing mining in community areas and subsequent vigorous enforcement to maintain the good order of the public and to sustain meaningful traditions and culture to ensure conflict resolution and mining site ownership.
