E. M. Harper

2.5k citations

15 papers · 2.0k indexed · 2 hit papers · h-index 14

Impact in

Industrial and Manufacturing Engineering top 0.5%
- Recycling and Waste Management Techniques
Mechanical Engineering top 1%
- Extraction and Separation Processes

Papers in

Industrial and Manufacturing Engineering 10
- Recycling and Waste Management Techniques 10
- Sustainable Industrial Ecology 2
Environmental Engineering 5
- Environmental Impact and Sustainability 5

Co-authors: T. E. Graedel Nedal T. Nassar Barbara K. Reck Philip Nuss Goksin Kavlak Reid Lifset Matthew J. Eckelman Jeremiah Johnson
Journals: Environmental Science & Technology (6 papers)Resources Conservation and Recycling (2 papers)Journal of Industrial Ecology (2 papers)Proceedings of the National Academy of Sciences (2 papers)Technology in Society (1 paper)
Partner nations: United States South Africa Italy

In The Last Decade

E. M. Harper

15 papers receiving 2.0k citations

Hit Papers

align trajectories log scale

Criticality of metals and metalloids 2015 · 563 citations

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if any of the following hold:

it has ≥500 total citations;
it reaches ≥1.5× the top-1% citation threshold for papers in the same subfield and year (the threshold is the minimum needed to enter the top 1%, not the average within it);
it reaches the top citation threshold in at least one of its specific research topics.

2015 Proceedings of the National Academy of Sciences
2013 Proceedings of the National Academy of Sciences

Peers

Countries citing papers authored by E. M. Harper

Since Specialization

Citations

This map shows the geographic impact of E. M. Harper's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by E. M. Harper with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites E. M. Harper more than expected).

Fields of papers citing papers by E. M. Harper

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by E. M. Harper. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by E. M. Harper. The network helps show where E. M. Harper may publish in the future.

Co-authorship network

The 14 scholars most cited alongside E. M. Harper, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.

Border = papers with E. M. Harper Line = papers co-authored together E. M. Harper links everyone, so they are left out of the graph.

All Works

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15 of 15 papers shown

#	Work
1	Metal Dissipation and Inefficient Recycling Intensify Climate Forcing Environmental Science & Technology ·Luca Ciacci, E. M. Harper, Nedal T. Nassar, Barbara K. Reck, T. E. Graedel	2016	57
2	Criticality of the Geological Zinc, Tin, and Lead Family Journal of Industrial Ecology ·E. M. Harper, Goksin Kavlak, Jerana, Matthew J. Eckelman, Serkan Erbis, مريم مرعي سلمان الطائي, Philip Nuss, T. E. Graedel	2015	73
3	Criticality of Seven Specialty Metals Journal of Industrial Ecology ·Kimberly-Anne S. Enriquez, E. M. Harper, Philip Nuss, Matthew J. Eckelman, Yayu Wei, T. E. Graedel	2015	44
4	Criticality of metals and metalloids Proceedings of the National Academy of Sciences ·T. E. Graedel, E. M. Harper, Nedal T. Nassar, Philip Nuss, Barbara K. Reck Hit paper breakdown →	2015	563
5	The criticality of four nuclear energy metals Resources Conservation and Recycling ·E. M. Harper, Eugène-Charles Catalan, Kimberly-Anne S. Enriquez, Philip Nuss, Matthew J. Eckelman, T. E. Graedel	2015	39
6	By-product metals are technologically essential but have problematic supply Science Advances ·Nedal T. Nassar, T. E. Graedel, E. M. Harper	2015	306
7	Criticality of Iron and Its Principal Alloying Elements Environmental Science & Technology ·Philip Nuss, E. M. Harper, Nedal T. Nassar, Barbara K. Reck, T. E. Graedel	2014	87
8	On the materials basis of modern society Proceedings of the National Academy of Sciences ·T. E. Graedel, E. M. Harper, Nedal T. Nassar, Barbara K. Reck Hit paper breakdown →	2013	363
9	Metal lost and found: Dissipative uses and releases of copper in the United States 1975–2000 The Science of The Total Environment ·Reid Lifset, Matthew J. Eckelman, E. M. Harper, Zeke Hausfather, LA Jones	2012	56
10	Tracking the Metal of the Goblins: Cobalt’s Cycle of Use Environmental Science & Technology ·E. M. Harper, Goksin Kavlak, T. E. Graedel	2011	103
11	Criticality of the Geological Copper Family Environmental Science & Technology ·Nedal T. Nassar, O Lentz, Matthew H.E.M. Browning, Eugène-Charles Catalan, Elizabeth Friedlander, E. M. Harper, Else Nordahl, Goksin Kavlak, Hays Graeme, C. Helsens, Thanh-Thi Nguyen, Ilhom Abdullayev, T. E. Graedel	2011	142
12	Illuminating Tungsten’s Life Cycle in the United States: 1975−2000 Environmental Science & Technology ·E. M. Harper, T. E. Graedel	2008	32
13	Dining at the Periodic Table: Metals Concentrations as They Relate to Recycling Environmental Science & Technology ·Jeremiah Johnson, E. M. Harper, Reid Lifset, T. E. Graedel	2007	105
14	The contemporary Latin America and the Caribbean zinc cycle: One year stocks and flows Resources Conservation and Recycling ·E. M. Harper, M. Bertram, T. E. Graedel	2006	12
15	Industrial ecology: a teenager’s progress Technology in Society ·E. M. Harper, T. E. Graedel	2004	44

About E. M. Harper

E. M. Harper is a scholar working on Industrial and Manufacturing Engineering, Environmental Engineering, Mechanical Engineering, Industrial and Manufacturing Engineering and Building and Construction, having authored 15 papers that have together received 2.0k indexed citations. Recurring topics across this work include Extraction and Separation Processes (13 papers), Recycling and Waste Management Techniques (10 papers), Environmental Impact and Sustainability (5 papers), Sustainable Industrial Ecology (2 papers), Metal Extraction and Bioleaching (2 papers), Mining and Resource Management (2 papers), Radioactive element chemistry and processing (1 paper) and Advancements in Battery Materials (1 paper). The work is most often cited by research in Industrial and Manufacturing Engineering (807 citations), Mechanical Engineering (1.3k citations), Environmental Engineering (510 citations), Geochemistry and Petrology (134 citations) and Building and Construction (212 citations). E. M. Harper has collaborated with scholars based in United States, South Africa and Italy. Frequent co-authors include T. E. Graedel, Nedal T. Nassar, Barbara K. Reck, Philip Nuss, Goksin Kavlak, Reid Lifset, Matthew J. Eckelman, Jeremiah Johnson, Elizabeth Friedlander and Zeke Hausfather. Their work appears in journals such as Environmental Science & Technology, Resources Conservation and Recycling, Journal of Industrial Ecology, Proceedings of the National Academy of Sciences and Technology in Society.

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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