World's Best Scientists 2026 revealed!
Manuela Merchán

Manuela Merchán

D-Index & Metrics

Chemistry

D-Index
65
Citations
12261
World Ranking
7832
National Ranking
239

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.

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 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.

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.

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 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.

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

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