World's Best Scientists 2026 revealed!
Manuela Merchán

Manuela Merchán

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 65 7832 7104 239 231 191 12261

Manuela Merchán publications per year

The chart shows the history of publications by Manuela Merchán between 1984 and 2022, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Manuela Merchán published across 39 years, from 1984 to 2022, averaging 5 papers a year. Output peaked at 16 publications in 1997. 2 of the 194 publications appeared in the last two years.

No. of publications
5 10 15
Bar chart. Horizontal axis: year, 1984 to 2022. Vertical axis: number of publications, 0 to 16. Peak 16 publications in 1997. 1984: 2 publications 1985: 5 publications 1986: 3 publications 1987: 3 publications 1988: 2 publications 1989: 4 publications 1990: 3 publications 1991: 2 publications 1992: 1 publication 1993: 14 publications 1994: 8 publications 1995: 9 publications 1996: 8 publications 1997: 16 publications 1998: 3 publications 1999: 7 publications 2000: 8 publications 2001: 6 publications 2002: 4 publications 2003: 8 publications 2004: 2 publications 2005: 7 publications 2006: 10 publications 2007: 6 publications 2008: 13 publications 2009: 9 publications 2010: 3 publications 2011: 5 publications 2012: 5 publications 2013: 6 publications 2014: 6 publications 2015: 1 publication 2016: 2 publications 2017: 1 publication 2018: 0 publications 2019: 0 publications 2020: 0 publications 2021: 0 publications 2022: 2 publications
1984 2022

194 publications in total across all disciplines

View publications per year as a table
Manuela Merchán: publications per year, 1984 to 2022
Year Publications
1984 2
1985 5
1986 3
1987 3
1988 2
1989 4
1990 3
1991 2
1992 1
1993 14
1994 8
1995 9
1996 8
1997 16
1998 3
1999 7
2000 8
2001 6
2002 4
2003 8
2004 2
2005 7
2006 10
2007 6
2008 13
2009 9
2010 3
2011 5
2012 5
2013 6
2014 6
2015 1
2016 2
2017 1
2018 0
2019 0
2020 0
2021 0
2022 2
Total 194
Download as CSV

Manuela Merchán publication distribution in Chemistry in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Chemistry in 2026. The highlighted bar marks where Manuela Merchán sits on this spectrum.

No. of scientists
250 500 750 1,000 1,250
Bar chart with 63 bars. Horizontal axis: publications, 61–80 to 1,295+. Vertical axis: number of scientists, 0 to 1,350. Most scientists, 1,350, have 161–180 publications. The last bar groups every scientist with 1,295 publications or more. The highlighted bar, 181–200 publications, is where this scientist sits. 61–80 publications: 66 scientists 81–100 publications: 302 scientists 101–120 publications: 623 scientists 121–140 publications: 918 scientists 141–160 publications: 1,218 scientists 161–180 publications: 1,350 scientists 181–200 publications: 1,344 scientists 201–220 publications: 1,281 scientists 221–240 publications: 1,216 scientists 241–260 publications: 1,100 scientists 261–280 publications: 979 scientists 281–300 publications: 939 scientists 301–320 publications: 764 scientists 321–340 publications: 643 scientists 341–360 publications: 628 scientists 361–380 publications: 522 scientists 381–400 publications: 459 scientists 401–420 publications: 397 scientists 421–440 publications: 327 scientists 441–460 publications: 270 scientists 461–480 publications: 265 scientists 481–500 publications: 252 scientists 501–520 publications: 201 scientists 521–540 publications: 185 scientists 541–560 publications: 148 scientists 561–580 publications: 148 scientists 581–600 publications: 132 scientists 601–620 publications: 114 scientists 621–640 publications: 104 scientists 641–660 publications: 91 scientists 661–680 publications: 92 scientists 681–700 publications: 73 scientists 701–720 publications: 57 scientists 721–740 publications: 54 scientists 741–760 publications: 67 scientists 761–780 publications: 45 scientists 781–800 publications: 46 scientists 801–820 publications: 39 scientists 821–840 publications: 32 scientists 841–860 publications: 36 scientists 861–880 publications: 29 scientists 881–900 publications: 26 scientists 901–920 publications: 24 scientists 921–940 publications: 14 scientists 941–960 publications: 23 scientists 961–980 publications: 28 scientists 981–1,000 publications: 15 scientists 1,001–1,020 publications: 29 scientists 1,021–1,040 publications: 12 scientists 1,041–1,060 publications: 19 scientists 1,061–1,080 publications: 12 scientists 1,081–1,100 publications: 6 scientists 1,101–1,120 publications: 8 scientists 1,121–1,140 publications: 12 scientists 1,141–1,160 publications: 5 scientists 1,161–1,180 publications: 6 scientists 1,181–1,200 publications: 14 scientists 1,201–1,220 publications: 7 scientists 1,221–1,240 publications: 2 scientists 1,241–1,260 publications: 6 scientists 1,261–1,280 publications: 4 scientists 1,281–1,294 publications: 6 scientists 1,295+ publications: 100 scientists
61–80 publications 1,295+

This scientist: 191 publications — 29th percentile

29% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,295 publications or more.

View publications distribution as a table
Number of Chemistry scientists by publication count, Research.com 2026 ranking edition. Based on 17,934 ranked scientists.
Publications Scientists This scientist
61–80 66
81–100 302
101–120 623
121–140 918
141–160 1,218
161–180 1,350
181–200 1,344 191
201–220 1,281
221–240 1,216
241–260 1,100
261–280 979
281–300 939
301–320 764
321–340 643
341–360 628
361–380 522
381–400 459
401–420 397
421–440 327
441–460 270
461–480 265
481–500 252
501–520 201
521–540 185
541–560 148
561–580 148
581–600 132
601–620 114
621–640 104
641–660 91
661–680 92
681–700 73
701–720 57
721–740 54
741–760 67
761–780 45
781–800 46
801–820 39
821–840 32
841–860 36
861–880 29
881–900 26
901–920 24
921–940 14
941–960 23
961–980 28
981–1,000 15
1,001–1,020 29
1,021–1,040 12
1,041–1,060 19
1,061–1,080 12
1,081–1,100 6
1,101–1,120 8
1,121–1,140 12
1,141–1,160 5
1,161–1,180 6
1,181–1,200 14
1,201–1,220 7
1,221–1,240 2
1,241–1,260 6
1,261–1,280 4
1,281–1,294 6
1,295+ 100
Download as CSV

Manuela Merchán D-index placement in Chemistry in 2026

The chart shows the D-index (discipline H-index) distribution of Chemistry scientists ranked by Research.com in 2026. The highlighted bar marks where Manuela Merchán sits on this spectrum.

No. of scientists
250 500 750 1,000
Bar chart with 61 bars. Horizontal axis: D-Index, 40–41 to 159+. Vertical axis: number of scientists, 0 to 1,051. Most scientists, 1,051, have 56–57 D-Index. The last bar groups every scientist with 159 D-Index or more. The highlighted bar, 64–65 D-Index, is where this scientist sits. 40–41 D-Index: 289 scientists 42–43 D-Index: 612 scientists 44–45 D-Index: 808 scientists 46–47 D-Index: 776 scientists 48–49 D-Index: 835 scientists 50–51 D-Index: 861 scientists 52–53 D-Index: 872 scientists 54–55 D-Index: 933 scientists 56–57 D-Index: 1,051 scientists 58–59 D-Index: 930 scientists 60–61 D-Index: 882 scientists 62–63 D-Index: 834 scientists 64–65 D-Index: 731 scientists 66–67 D-Index: 775 scientists 68–69 D-Index: 683 scientists 70–71 D-Index: 646 scientists 72–73 D-Index: 561 scientists 74–75 D-Index: 501 scientists 76–77 D-Index: 437 scientists 78–79 D-Index: 388 scientists 80–81 D-Index: 354 scientists 82–83 D-Index: 292 scientists 84–85 D-Index: 275 scientists 86–87 D-Index: 254 scientists 88–89 D-Index: 235 scientists 90–91 D-Index: 185 scientists 92–93 D-Index: 192 scientists 94–95 D-Index: 155 scientists 96–97 D-Index: 163 scientists 98–99 D-Index: 125 scientists 100–101 D-Index: 105 scientists 102–103 D-Index: 105 scientists 104–105 D-Index: 112 scientists 106–107 D-Index: 88 scientists 108–109 D-Index: 68 scientists 110–111 D-Index: 69 scientists 112–113 D-Index: 65 scientists 114–115 D-Index: 79 scientists 116–117 D-Index: 61 scientists 118–119 D-Index: 44 scientists 120–121 D-Index: 37 scientists 122–123 D-Index: 40 scientists 124–125 D-Index: 33 scientists 126–127 D-Index: 26 scientists 128–129 D-Index: 34 scientists 130–131 D-Index: 35 scientists 132–133 D-Index: 25 scientists 134–135 D-Index: 27 scientists 136–137 D-Index: 17 scientists 138–139 D-Index: 16 scientists 140–141 D-Index: 20 scientists 142–143 D-Index: 20 scientists 144–145 D-Index: 15 scientists 146–147 D-Index: 9 scientists 148–149 D-Index: 9 scientists 150–151 D-Index: 16 scientists 152–153 D-Index: 11 scientists 154–155 D-Index: 9 scientists 156–157 D-Index: 3 scientists 158 D-Index: 3 scientists 159+ D-Index: 98 scientists
40–41 D-Index 159+

This scientist: 65 D-Index — 58th percentile

58% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 159 D-Index or more.

View D-Index distribution as a table
Number of Chemistry scientists by D-index, Research.com 2026 ranking edition. Based on 17,934 ranked scientists.
D-Index Scientists This scientist
40–41 289
42–43 612
44–45 808
46–47 776
48–49 835
50–51 861
52–53 872
54–55 933
56–57 1,051
58–59 930
60–61 882
62–63 834
64–65 731 65
66–67 775
68–69 683
70–71 646
72–73 561
74–75 501
76–77 437
78–79 388
80–81 354
82–83 292
84–85 275
86–87 254
88–89 235
90–91 185
92–93 192
94–95 155
96–97 163
98–99 125
100–101 105
102–103 105
104–105 112
106–107 88
108–109 68
110–111 69
112–113 65
114–115 79
116–117 61
118–119 44
120–121 37
122–123 40
124–125 33
126–127 26
128–129 34
130–131 35
132–133 25
134–135 27
136–137 17
138–139 16
140–141 20
142–143 20
144–145 15
146–147 9
148–149 9
150–151 16
152–153 11
154–155 9
156–157 3
158 3
159+ 98
Download as CSV

Overview

Manuela Merchán is affiliated with the University of Valencia in Spain and has contributed to the field of Medicine, with a focus on Oncology, Pulmonary and Respiratory Medicine, and Surgery. Their research primarily addresses clinical issues related to gallbladder and bile duct disorders, pancreatic and hepatic oncology, cholangiocarcinoma and gallbladder cancer, esophageal and gastrointestinal pathology, and colorectal cancer screening and detection.

Their recent published works highlight an emphasis on endoscopic procedures and antibiotic prophylaxis related to bile duct and pancreatic conditions. Notable papers include:

  • BILIARY DRAINAGE IN PATIENTS WITH CHOLANGIOCARCINOMA: A COMPARISON BETWEEN ENDOSCOPIC RETROGRADE CHOLANGIOPANCREATOGRAPHY AND PERCUTANEOUS TRANSHEPATIC APPROACHES, 2022, Endoscopy
  • ANTIBIOTIC PROPHYLAXIS FOR ENDOSCOPIC RETROGRADE CHOLANGIOPANCREATOGRAPHY (ERCP): A SYSTEMATIC REVIEW AND META-ANALYSIS, 2022, Endoscopy

These publications were featured in the journal Endoscopy, which is the primary venue where Manuela Merchán has published research. The frequent collaboration with other researchers is evident, with regular coauthors including Caroline Flaksbaum Moll, J.M. Vera Intriago, Epifânio Silvino do Monte, Ígor Mendonça Proença, and Wanderlei M. Bernardo.

The scientist's work covers multiple specific topics, often intersecting diagnostic technologies and clinical treatment strategies for gastrointestinal and hepatic cancers. These topics encompass:

  • Gallbladder and Bile Duct Disorders
  • Pancreatic and Hepatic Oncology Research
  • Cholangiocarcinoma and Gallbladder Cancer Studies
  • Esophageal and GI Pathology
  • Colorectal Cancer Screening and Detection

Manuela Merchán's research contributions reflect an integration of clinical approaches and systematic reviews aimed at optimizing procedural outcomes and infection prevention in endoscopic interventions relevant to malignant and pre-malignant conditions of the hepatobiliary system.

Best Publications

  • Towards an accurate molecular orbital theory for excited states: Ethene, butadiene, and hexatriene

    Luis Serrano‐Andrés;Manuela Merchán;Ignacio Nebot‐Gil;Roland Lindh

  • Multiconfigurational perturbation theory: Applications in electronic spectroscopy

    Björn O Roos;Kerstin Andersson;Markus P Fülscher;Per‐âke Malmqvist

  • Are the five natural DNA/RNA base monomers a good choice from natural selection? : A photochemical perspective

    Luis Serrano-Andrés;Manuela Merchán

  • Computational evidence in favor of a two-state, two-mode model of the retinal chromophore photoisomerization

    Remedios González-Luque;Marco Garavelli;Fernando Bernardi;Manuela Merchán

  • Density matrix averaged atomic natural orbital (ANO) basis sets for correlated molecular wave functions: III. First row transition metal atoms

    Rosendo Pou-Amérigo;Manuela Merchán;Ignacio Nebot-Gil;Per-Olof Widmark

  • Ultrafast Internal Conversion of Excited Cytosine via the Lowest ππ* Electronic Singlet State

    Manuela Merchán;Luis Serrano-Andrés

  • Adenine and 2-aminopurine: Paradigms of modern theoretical photochemistry

    Luis Serrano-Andrés;Manuela Merchán;Antonio Carlos Borin

  • Quantum chemistry of the excited state: 2005 overview

    Luis Serrano-Andrés;Manuela Merchán

  • Unified model for the ultrafast decay of pyrimidine nucleobases.

    Manuela Merchán;Remedios González-Luque;Teresa Climent;Luis Serrano-Andrés

  • THEORETICAL STUDY OF THE INTERNAL CHARGE TRANSFER IN AMINOBENZONITRILES

    Luis Serrano-Andres;Manuela Merchan;Bjoern O. Roos;Roland Lindh

  • Applications of level shift corrected perturbation theory in electronic spectroscopy

    Björn O. Roos;Kerstin Andersson;Markus P. Fülscher;Luis Serrano-Andrés

  • Theoretical Study of the Electronic Spectra of Cyclopentadiene, Pyrrole, and Furan

    Luis Serrano-Andres;Manuela Merchan;Ignacio Nebot-Gil;Bjoern O. Roos

  • Theoretical study of the electronic spectrum of all-trans-1,3,5,7-octatetraene

    Luis Serrano-Andres;Roland Lindh;Bjoern O. Roos;Manuela Merchan

  • Triplet-state formation along the ultrafast decay of excited singlet cytosine.

    Manuela Merchan;Luis Serrano-Andres;Michael A. Robb;Lluis Blancafort

  • Theoretical Study of the Electronic Spectrum of trans-Stilbene

    Vicent Molina;Manuela Merchán;Björn O. Roos

  • A three-state model for the photophysics of adenine

    Luis Serrano-Andrés;Manuela Merchán;Antonio Carlos Borin

  • A three-state model for the photophysics of guanine.

    Luis Serrano-Andrés;Manuela Merchán;Antonio Carlos Borin

  • Computation of conical intersections by using perturbation techniques

    Luis Serrano-Andrés;Manuela Merchán;Roland Lindh

  • Theoretical characterization of the lowest-energy absorption band of pyrrole

    Björn O. Roos;Per-Åke Malmqvist;Vincent Molina;Luis Serrano-Andrés

  • Ab initio determination of the ionization potentials of DNA and RNA nucleobases.

    Daniel Roca-Sanjuán;Mercedes Rubio;Manuela Merchán;Luis Serrano-Andrés

Frequent Co-Authors

Luis Serrano-Andrés
Luis Serrano-Andrés University of Valencia
Björn O. Roos
Björn O. Roos Lund University
Enrique Ortí
Enrique Ortí University of Valencia
Marco Garavelli
Marco Garavelli University of Bologna
Roland Lindh
Roland Lindh Uppsala University
Massimo Olivucci
Massimo Olivucci University of Siena
Frode Rise
Frode Rise University of Oslo
Juan Andrés
Juan Andrés Jaume I University
Sason Shaik
Sason Shaik Hebrew University of Jerusalem
Josef Michl
Josef Michl University of Colorado Boulder

If you think any of the details on this page are incorrect, let us know.

Report an issue

We appreciate your kind effort to assist us to improve this page, it would be helpful providing us with as much detail as possible in the text box below:

Related Online Degrees & Career Pathways

Exploring online degree options related to Chemistry can open doors to diverse career paths. For instance, understanding the financial commitment is crucial. Just as students researching criminal justice often ask, how much does a criminal justice degree cost helps clarify tuition expectations, Chemistry students should also consider program costs before enrolling.

Entry-level opportunities in related fields sometimes start with an associate degree. Learning from the best online criminal justice programs, like those highlighted in the best online associates in criminal justice resource, showcases how foundational education can launch careers in scientific and technical disciplines.

Career outcomes can vary widely within closely related disciplines. For example, the different roles and responsibilities in paralegal professions come with varying pay scales, as detailed under types of paralegals and salaries. Similarly, Chemistry graduates might explore specialized paths such as pharmaceutical sales or lab research.

One promising avenue is becoming a pharmaceutical sales representative. Understanding the drug rep salary and career pathways can help Chemistry students evaluate this option, which combines scientific knowledge with strong communication skills.

Best Scientists Citing Manuela Merchán

Trending Scientists

Recently Published Articles