Concepedia

First Derivative Test

The First Derivative Test is a calculus method that determines the local extrema of a function by analyzing the sign changes of its first derivative at critical points.

92

Publications

2.9K

Citations

252

Authors

80

Institutions

Publications per year

2017–2026

18

Parents

Publications

92

STUDIES ON THE FIRST DERIVATIVE OF THE VENTRICULAR PRESSURE PULSE IN MAN

William L. Gleason, Eugene Braunwald · Journal of Clinical Investigation · 1962 · 408 citations · Full text

, , +9

Longitudinal Evidence for a Midlife Nadir in Human Well‐Being: Results from Four Data Sets

Terence Chai Cheng, Nattavudh Powdthavee, Andrew J. Oswald · The Economic Journal · 2015 · 189 citations · Full text

, , +12

A UV spectrophotometric method for the determination of folic acid in pharmaceutical tablets and dissolution tests

RicardoS Matias, Paulo Roberto da Silva Ribeiro, Mafalda C. Sarraguça et al. · Analytical Methods · 2014 · 106 citations

, , +17

Simultaneous spectrophotometric determination of three food dyes by using the first derivative of ratio spectra

J. J. Berzas Nevado, Carmen Guiberteau Cabanillas · Talanta · 1995 · 98 citations

, , +16

Direct determination of ethanol in all types of alcoholic beverages by near-infrared derivative spectrometry

M�ximo Gallignani, Salvador Garrigues, Miguel de la Guárdia · The Analyst · 1993 · 79 citations

, , +12

1–5 of 92

Authors

252

  1. NE
    Nevin Erk

    Ankara University, Türkiye

    4 publications · 105 citations

    4

    h-index

  2. SS
    Samah S. Abbas

    Cairo University, Egypt

    4 publications · 63 citations

    4

    h-index

  3. SZ
    Sonia Z. El-khateeb

    Cairo University, Egypt

    3 publications · 50 citations

    3

    h-index

  4. AH
    Ahmed H. Abdelazim

    Al-Azhar University, Egypt

    3 publications · 50 citations

    3

    h-index

  5. PH
    Paul H. Langner

    Northwestern Mutual Life Insurance (United States), United States

    2 publications · 68 citations

    2

    h-index

1–5 of 252

Institutions

80

  1. Cairo University

    Giza, Egypt

    13 h-index

    47 publications

    1K citations

  2. Ankara University

    Ankara, Türkiye

    6 h-index

    12 publications

    417 citations

  3. Alexandria University

    Alexandria, Egypt

    4 h-index

    13 publications

    293 citations

  4. Al-Azhar University

    Cairo, Egypt

    4 h-index

    12 publications

    180 citations

  5. University of Pennsylvania

    Philadelphia, United States

    3 h-index

    7 publications

    216 citations

  6. Beni-Suef University

    Banī Suwayf, Egypt

    3 h-index

    3 publications

    57 citations

  7. University of Castilla-La Mancha

    Ciudad Real, Spain

    3 h-index

    7 publications

    455 citations

  8. National Organization for Drug Control and Research

    Cairo, Egypt

    2 h-index

    4 publications

    46 citations

1–8 of 80

Venues

  1. Analytical Letters

    7 publications · 199 citations

    7

    h-index

  2. Drug Testing and Analysis

    5 publications · 116 citations

    5

    h-index

  3. Analytical Chemistry Letters

    5 publications · 95 citations

    5

    h-index

  4. The Analyst

    4 publications · 143 citations

    4

    h-index

  5. PubMed

    Repository · 4 publications · 109 citations

    4

    h-index

1–5