James K. Harper

5.1k citations

81 papers · 3.8k indexed · 1 hit paper · h-index 29

Co-authors: Gary A. Strobel Uvidelio Castillo David M. Grant Fernando J. Uribe‐Romo Atta M. Arif Eugene Ford W. M. Hess Demetrius A. Vazquez-Molina
Topics: Advanced NMR Techniques and Applications (37 papers)Solid-state spectroscopy and crystallography (20 papers)NMR spectroscopy and applications (15 papers)
Cited by: Pharmacology Spectroscopy Cell Biology
Journals: Journal of the American Chemical Society The Journal of Chemical Physics Analytical Chemistry
Partner nations: United States Sweden India

In The Last Decade

James K. Harper

76 papers receiving 3.6k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Natural Products from Endophytic Microorganisms

2004 1.1k citations Gary A. Strobel, Uvidelio Castillo et al. profile →

Peers

Countries citing papers authored by James K. Harper

Since Specialization

Citations

This map shows the geographic impact of James K. 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 James K. Harper with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites James K. Harper more than expected).

Fields of papers citing papers by James K. Harper

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by James K. 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 James K. Harper. The network helps show where James K. Harper may publish in the future.

Co-authorship network of co-authors of James K. Harper

This figure shows the co-authorship network connecting the top 25 collaborators of James K. Harper. A scholar is included among the top collaborators of James K. Harper based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with James K. Harper. James K. Harper is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

#	Work	Indexed citations
1	A multivariate library of zirconia metal–organic frameworks with dissolved p -nitroaniline dipoles and concentration-dependent optical and dielectric response 2025 ·CrystEngComm ·(unknown),Yangyang Wang,(unknown),(unknown),Lei Zhai,James K. Harper,Fernando J. Uribe‐Romo	0
2	Improving the Prediction of Antioxidant Activity by Identifying High-Probability Conformations with NMR 2025 ·Analytical Chemistry ·(unknown),(unknown),(unknown),Scott R. Burt,James K. Harper	0
3	A solid-state NMR approach for distinguishing between RNH2 and RNH3+ sites 2025 ·Solid State Nuclear Magnetic Resonance ·Robert J. Nickles,(unknown),James K. Harper	0
4	Predicting 35-Cl electric field gradient tensors in crystalline solids using cluster and fragment-corrected planewave density functional theory 2024 ·Solid State Nuclear Magnetic Resonance ·(unknown),James K. Harper,Joshua D. Hartman	2
5	NMR-guided refinement of crystal structures using ¹⁵N chemical shift tensors 2024 ·CrystEngComm ·Ryan Toomey,(unknown),(unknown),Joshua D. Hartman,Alexander J. Nichols,Dean A. A. Myles,A.S. Gardberg,Garry J. McIntyre,Matthias Zeller,Manish Mehta,James K. Harper	3
6	Hydrogen Fueling and GT Demand Changes Impact Insights Through Modeling 2024 ·James K. Harper,(unknown),(unknown)	0
7	Synergistic Steric and Electronic Effects on the Photoredox Catalysis by a Multivariate Library of Titania Metal–Organic Frameworks 2023 ·Journal of the American Chemical Society ·(unknown),Matthew W. Logan,Zhihengyu Chen,(unknown),(unknown),Demetrius A. Vazquez-Molina,A. Nijamudheen,(unknown),(unknown),Gisselle Pombar,(unknown),Jonathan D. Caranto,James K. Harper,Amanda J. Morris,José L. Mendoza-Cortés,Titel Jurca,Karena W. Chapman,Fernando J. Uribe‐Romo	40
8	Refining crystal structures using ¹³C NMR chemical shift tensors as a target function 2021 ·CrystEngComm ·(unknown),James K. Harper	4
9	Proline Isomerization as a Key Determinant for Hsp90-Toxin Interactions 2021 ·Frontiers in Cellular and Infection Microbiology ·(unknown),Patrick Cherubin,James K. Harper,Ken Teter	6
10	Fast and Accurate Electric Field Gradient Calculations in Molecular Solids With Density Functional Theory 2021 ·Frontiers in Chemistry ·Joshua D. Hartman,(unknown),James K. Harper	10
11	Chemical Shift Tensors of Cimetidine Form A Modeled with Density Functional Theory Calculations: Implications for NMR Crystallography 2020 ·The Journal of Physical Chemistry A ·Sean T. Holmes,(unknown),(unknown),Jeffry D. Madura,Rosalynn Quiñones,James K. Harper,Robert W. Schurko,Robbie J. Iuliucci	33
12	Heterogeneous Metal-Free Hydrogenation over Defect-Laden Hexagonal Boron Nitride 2016 ·ACS Omega ·David J. Nash,David T. Restrepo,(unknown),(unknown),(unknown),Maral Aminpour,Duy Le,Zhanyong Li,Omar K. Farha,James K. Harper,Talat S. Rahman,Richard G. Blair	51
13	Javanicin, an Antibacterial Naphthaquinone from an Endophytic Fungus of Neem, Chloridium sp. 2008 ·Current Microbiology ·Ravindra N. Kharwar,Vijay Verma,Anuj Kumar,Surendra K. Gond,James K. Harper,W. M. Hess,(unknown),Cong Ma,Yuhao Ren,Gary A. Strobel	89
14	Purification, identification and activity of phomodione, a furandione from an endophytic Phoma species 2007 ·Phytochemistry ·Angela Hoffman,Steven G. Mayer,Gary A. Strobel,W. M. Hess,G. Wayne Sovocool,Andrew H. Grange,James K. Harper,Atta M. Arif,David M. Grant,(unknown)	56
15	Pursuing structure in microcrystalline solids with independent molecules in the unit cell using 1H–13C correlation data 2007 ·Journal of Magnetic Resonance ·James K. Harper,Mark Strohmeier,David M. Grant	16
16	Kakadumycins, novel antibiotics fromStreptomycessp. NRRL 30566, an endophyte ofGrevillea pteridifolia 2003 ·FEMS Microbiology Letters ·Uvidelio Castillo,James K. Harper,Gary A. Strobel,(unknown),(unknown),Eugene Ford,Janine Lin,(unknown),(unknown),Hai-Yan Ge,Debbie Yaver,James B. Jensen,(unknown),Richard A. Robison,David B. Millar,W. M. Hess,(unknown),David B. Teplow	148
17	Isopestacin, an isobenzofuranone from Pestalotiopsis microspora, possessing antifungal and antioxidant activities 2002 ·Phytochemistry ·Gary A. Strobel,Eugene Ford,(unknown),James K. Harper,Atta M. Arif,David M. Grant,P. C. W. Fung,(unknown)	246
18	10-Deacetyl baccatin III dimethyl sulfoxide disolvate 2001 ·Acta Crystallographica Section C Crystal Structure Communications ·James K. Harper,N. Kent Dalley,(unknown),F. G. West,David M. Grant	8
19	Ambuic acid, a highly functionalized cyclohexenone with antifungal activity from Pestalotiopsis spp. and Monochaetia sp. 2001 ·Phytochemistry ·(unknown),James K. Harper,David M. Grant,(unknown),Bharat P. Bashyal,W. M. Hess,Gary A. Strobel	145
20	Modified Spectral Editing Methods for 13C CP/MAS Experiments in Solids 2000 ·Journal of Magnetic Resonance ·Jian Zhi Hu,James K. Harper,(unknown),Ronald J. Pugmire,(unknown)	21

About James K. Harper

James K. Harper is a scholar working on Spectroscopy, Nuclear and High Energy Physics and Pharmacology, having authored 81 papers that have together received 3.8k indexed citations. Recurring topics across this work include Advanced NMR Techniques and Applications (37 papers), Solid-state spectroscopy and crystallography (20 papers) and NMR spectroscopy and applications (15 papers). The work is most often cited by research in Pharmacology (1.4k citations), Spectroscopy (714 citations) and Cell Biology (683 citations). James K. Harper has collaborated with scholars based in United States, Sweden and India. Frequent co-authors include Gary A. Strobel, Uvidelio Castillo, David M. Grant, Fernando J. Uribe‐Romo, Atta M. Arif, Eugene Ford, W. M. Hess, Demetrius A. Vazquez-Molina, Matthew W. Logan and Robbie J. Iuliucci. Their work appears in journals such as Journal of the American Chemical Society, The Journal of Chemical Physics and Analytical Chemistry.

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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