22635800400

Rakhmeyev, Rustam G

PhD in Physics and Mathematics

Institute of Molecule and Crystal Physics of the Ufa Federal Research Center of the Russian Academy of Sciences

Publications

Citations

171

h-index

Laboratory of Atomic Collision Physics

Senior Researcher

Without own publications

By date By citations

Without own publications

By date By citations

Total publications

Total citations

171

Citations per publication

6.58

Average publications per year

1.44

Average coauthors

4.35

Publications years

2007-2024 (18 years)

h-index

i10-index

m-index

0.5

o-index

g-index

w-index

Metrics description

h-index

A scientist has an h-index if h of his N publications are cited at least h times each, while the remaining (N - h) publications are cited no more than h times each.

https://www.pnas.org/doi/full/10.1073/pnas.0507655102

i10-index

The number of the author's publications that received at least 10 links each.

https://scholar.googleblog.com/2011/11/google-scholar-citations-open-to-all.html

m-index

The researcher's m-index is numerically equal to the ratio of his h-index to the number of years that have passed since the first publication.

https://harzing.com/publications/white-papers/reflections-on-the-h-index

o-index

The geometric mean of the h-index and the number of citations of the most cited article of the scientist.

https://arxiv.org/abs/1511.01545

g-index

For a given set of articles, sorted in descending order of the number of citations that these articles received, the g-index is the largest number such that the g most cited articles received (in total) at least g² citations.

https://doi.org/10.1007/s11192-006-0144-7

w-index

If w articles of a researcher have at least 10w citations each and other publications are less than 10(w+1) citations, then the researcher's w-index is equal to w.

https://doi.org/10.1002/asi.21276

Top-100

Fields of science

	1 2 3 4 5 6 7 8
Condensed Matter Physics	Condensed Matter Physics, 8, 30.77% Condensed Matter Physics 8 publications, 30.77%
Physical and Theoretical Chemistry	Physical and Theoretical Chemistry, 7, 26.92% Physical and Theoretical Chemistry 7 publications, 26.92%
Electronic, Optical and Magnetic Materials	Electronic, Optical and Magnetic Materials, 6, 23.08% Electronic, Optical and Magnetic Materials 6 publications, 23.08%
General Physics and Astronomy	General Physics and Astronomy, 5, 19.23% General Physics and Astronomy 5 publications, 19.23%
Physics and Astronomy (miscellaneous)	Physics and Astronomy (miscellaneous), 5, 19.23% Physics and Astronomy (miscellaneous) 5 publications, 19.23%
Atomic and Molecular Physics, and Optics	Atomic and Molecular Physics, and Optics, 3, 11.54% Atomic and Molecular Physics, and Optics 3 publications, 11.54%
General Materials Science	General Materials Science, 3, 11.54% General Materials Science 3 publications, 11.54%
General Chemistry	General Chemistry, 2, 7.69% General Chemistry 2 publications, 7.69%
General Engineering	General Engineering, 2, 7.69% General Engineering 2 publications, 7.69%
Spectroscopy	Spectroscopy, 1, 3.85% Spectroscopy 1 publication, 3.85%
General Medicine	General Medicine, 1, 3.85% General Medicine 1 publication, 3.85%
Instrumentation	Instrumentation, 1, 3.85% Instrumentation 1 publication, 3.85%
Radiation	Radiation, 1, 3.85% Radiation 1 publication, 3.85%
General Environmental Science	General Environmental Science, 1, 3.85% General Environmental Science 1 publication, 3.85%
Applied Mathematics	Applied Mathematics, 1, 3.85% Applied Mathematics 1 publication, 3.85%
General Earth and Planetary Sciences	General Earth and Planetary Sciences, 1, 3.85% General Earth and Planetary Sciences 1 publication, 3.85%
	1 2 3 4 5 6 7 8

Journals

	1 2 3 4
Journal of Chemical Physics	Journal of Chemical Physics, 4, 15.38% Journal of Chemical Physics 4 publications, 15.38%
Physics of the Solid State	Physics of the Solid State, 4, 15.38% Physics of the Solid State 4 publications, 15.38%
Molecular Crystals and Liquid Crystals	Molecular Crystals and Liquid Crystals, 2, 7.69% Molecular Crystals and Liquid Crystals 2 publications, 7.69%
Technical Physics	Technical Physics, 2, 7.69% Technical Physics 2 publications, 7.69%
Mathematical Physics and Computer Simulation	Mathematical Physics and Computer Simulation, 2, 7.69% Mathematical Physics and Computer Simulation 2 publications, 7.69%
Measurement Techniques	Measurement Techniques, 1, 3.85% Measurement Techniques 1 publication, 3.85%
Physical Chemistry Chemical Physics	Physical Chemistry Chemical Physics, 1, 3.85% Physical Chemistry Chemical Physics 1 publication, 3.85%
Applied Physics Letters	Applied Physics Letters, 1, 3.85% Applied Physics Letters 1 publication, 3.85%
JETP Letters	JETP Letters, 1, 3.85% JETP Letters 1 publication, 3.85%
Journal of Applied Physics	Journal of Applied Physics, 1, 3.85% Journal of Applied Physics 1 publication, 3.85%
Semiconductors	Semiconductors, 1, 3.85% Semiconductors 1 publication, 3.85%
ChemPhysChem	ChemPhysChem, 1, 3.85% ChemPhysChem 1 publication, 3.85%
Journal of Electron Spectroscopy and Related Phenomena	Journal of Electron Spectroscopy and Related Phenomena, 1, 3.85% Journal of Electron Spectroscopy and Related Phenomena 1 publication, 3.85%
Journal of Physical Chemistry Letters	Journal of Physical Chemistry Letters, 1, 3.85% Journal of Physical Chemistry Letters 1 publication, 3.85%
Technical Physics Letters	Technical Physics Letters, 1, 3.85% Technical Physics Letters 1 publication, 3.85%
Physical Review Research	Physical Review Research, 1, 3.85% Physical Review Research 1 publication, 3.85%
	1 2 3 4

Citing journals

	5 10 15 20 25
Physics of the Solid State	Physics of the Solid State, 25, 14.62% Physics of the Solid State 25 citations, 14.62%
Journal not defined	Journal not defined, 14, 8.19% Journal not defined 14 citations, 8.19%
Technical Physics	Technical Physics, 14, 8.19% Technical Physics 14 citations, 8.19%
Journal of Chemical Physics	Journal of Chemical Physics, 12, 7.02% Journal of Chemical Physics 12 citations, 7.02%
Physical Chemistry Chemical Physics	Physical Chemistry Chemical Physics, 6, 3.51% Physical Chemistry Chemical Physics 6 citations, 3.51%
JETP Letters	JETP Letters, 5, 2.92% JETP Letters 5 citations, 2.92%
Russian Chemical Bulletin	Russian Chemical Bulletin, 5, 2.92% Russian Chemical Bulletin 5 citations, 2.92%
NATO Science for Peace and Security Series C: Environmental Security	NATO Science for Peace and Security Series C: Environmental Security, 5, 2.92% NATO Science for Peace and Security Series C: Environmental Security 5 citations, 2.92%
Applied Sciences (Switzerland)	Applied Sciences (Switzerland), 5, 2.92% Applied Sciences (Switzerland) 5 citations, 2.92%
Polymer Science - Series B	Polymer Science - Series B, 4, 2.34% Polymer Science - Series B 4 citations, 2.34%
Journal of Experimental and Theoretical Physics	Journal of Experimental and Theoretical Physics, 4, 2.34% Journal of Experimental and Theoretical Physics 4 citations, 2.34%
Letters on Materials	Letters on Materials, 4, 2.34% Letters on Materials 4 citations, 2.34%
Physics-Uspekhi	Physics-Uspekhi, 3, 1.75% Physics-Uspekhi 3 citations, 1.75%
Synthetic Metals	Synthetic Metals, 3, 1.75% Synthetic Metals 3 citations, 1.75%
Bulletin of the Russian Academy of Sciences: Physics	Bulletin of the Russian Academy of Sciences: Physics, 3, 1.75% Bulletin of the Russian Academy of Sciences: Physics 3 citations, 1.75%
Journal of Electron Spectroscopy and Related Phenomena	Journal of Electron Spectroscopy and Related Phenomena, 3, 1.75% Journal of Electron Spectroscopy and Related Phenomena 3 citations, 1.75%
Journal of Physical Chemistry Letters	Journal of Physical Chemistry Letters, 3, 1.75% Journal of Physical Chemistry Letters 3 citations, 1.75%
Journal of Superconductivity and Novel Magnetism	Journal of Superconductivity and Novel Magnetism, 3, 1.75% Journal of Superconductivity and Novel Magnetism 3 citations, 1.75%
Журнал физической химии	Журнал физической химии, 3, 1.75% Журнал физической химии 3 citations, 1.75%
Materials Science Forum	Materials Science Forum, 2, 1.17% Materials Science Forum 2 citations, 1.17%
RSC Advances	RSC Advances, 2, 1.17% RSC Advances 2 citations, 1.17%
Applied Physics Letters	Applied Physics Letters, 2, 1.17% Applied Physics Letters 2 citations, 1.17%
Mendeleev Communications	Mendeleev Communications, 2, 1.17% Mendeleev Communications 2 citations, 1.17%
Russian Journal of Physical Chemistry A	Russian Journal of Physical Chemistry A, 2, 1.17% Russian Journal of Physical Chemistry A 2 citations, 1.17%
Russian Journal of Electrochemistry	Russian Journal of Electrochemistry, 2, 1.17% Russian Journal of Electrochemistry 2 citations, 1.17%
Polymers	Polymers, 2, 1.17% Polymers 2 citations, 1.17%
Polymer Testing	Polymer Testing, 2, 1.17% Polymer Testing 2 citations, 1.17%
Technical Physics Letters	Technical Physics Letters, 2, 1.17% Technical Physics Letters 2 citations, 1.17%
Solid State Phenomena	Solid State Phenomena, 1, 0.58% Solid State Phenomena 1 citation, 0.58%
Journal of Surface Investigation	Journal of Surface Investigation, 1, 0.58% Journal of Surface Investigation 1 citation, 0.58%
New Journal of Chemistry	New Journal of Chemistry, 1, 0.58% New Journal of Chemistry 1 citation, 0.58%
Science of the Total Environment	Science of the Total Environment, 1, 0.58% Science of the Total Environment 1 citation, 0.58%
Solar Energy Materials and Solar Cells	Solar Energy Materials and Solar Cells, 1, 0.58% Solar Energy Materials and Solar Cells 1 citation, 0.58%
Russian Journal of Organic Chemistry	Russian Journal of Organic Chemistry, 1, 0.58% Russian Journal of Organic Chemistry 1 citation, 0.58%
Physica Status Solidi (A) Applications and Materials Science	Physica Status Solidi (A) Applications and Materials Science, 1, 0.58% Physica Status Solidi (A) Applications and Materials Science 1 citation, 0.58%
Journal of Magnetism and Magnetic Materials	Journal of Magnetism and Magnetic Materials, 1, 0.58% Journal of Magnetism and Magnetic Materials 1 citation, 0.58%
E3S Web of Conferences	E3S Web of Conferences, 1, 0.58% E3S Web of Conferences 1 citation, 0.58%
Molecular Crystals and Liquid Crystals	Molecular Crystals and Liquid Crystals, 1, 0.58% Molecular Crystals and Liquid Crystals 1 citation, 0.58%
Carbohydrate Polymers	Carbohydrate Polymers, 1, 0.58% Carbohydrate Polymers 1 citation, 0.58%
Applied Biochemistry and Microbiology	Applied Biochemistry and Microbiology, 1, 0.58% Applied Biochemistry and Microbiology 1 citation, 0.58%
Applied Surface Science	Applied Surface Science, 1, 0.58% Applied Surface Science 1 citation, 0.58%
Russian Journal of General Chemistry	Russian Journal of General Chemistry, 1, 0.58% Russian Journal of General Chemistry 1 citation, 0.58%
Sustainable Energy and Fuels	Sustainable Energy and Fuels, 1, 0.58% Sustainable Energy and Fuels 1 citation, 0.58%
Physica B: Condensed Matter	Physica B: Condensed Matter, 1, 0.58% Physica B: Condensed Matter 1 citation, 0.58%
Journal of Materials Science: Materials in Electronics	Journal of Materials Science: Materials in Electronics, 1, 0.58% Journal of Materials Science: Materials in Electronics 1 citation, 0.58%
Macromolecules	Macromolecules, 1, 0.58% Macromolecules 1 citation, 0.58%
Solar Energy	Solar Energy, 1, 0.58% Solar Energy 1 citation, 0.58%
Polymer Bulletin	Polymer Bulletin, 1, 0.58% Polymer Bulletin 1 citation, 0.58%
Russian Chemical Reviews	Russian Chemical Reviews, 1, 0.58% Russian Chemical Reviews 1 citation, 0.58%
Crystallography Reports	Crystallography Reports, 1, 0.58% Crystallography Reports 1 citation, 0.58%
PLoS ONE	PLoS ONE, 1, 0.58% PLoS ONE 1 citation, 0.58%
Materials	Materials, 1, 0.58% Materials 1 citation, 0.58%
Chimica Techno Acta	Chimica Techno Acta, 1, 0.58% Chimica Techno Acta 1 citation, 0.58%
Высокомолекулярные соединения Б	Высокомолекулярные соединения Б, 1, 0.58% Высокомолекулярные соединения Б 1 citation, 0.58%
Кристаллография	Кристаллография, 1, 0.58% Кристаллография 1 citation, 0.58%
Прикладная биохимия и микробиология	Прикладная биохимия и микробиология, 1, 0.58% Прикладная биохимия и микробиология 1 citation, 0.58%
Mathematical Physics and Computer Simulation	Mathematical Physics and Computer Simulation, 1, 0.58% Mathematical Physics and Computer Simulation 1 citation, 0.58%

	5 10 15 20 25

Publishers

	1 2 3 4 5 6 7 8 9
Pleiades Publishing	Pleiades Publishing, 9, 34.62% Pleiades Publishing 9 publications, 34.62%
AIP Publishing	AIP Publishing, 6, 23.08% AIP Publishing 6 publications, 23.08%
Taylor & Francis	Taylor & Francis, 2, 7.69% Taylor & Francis 2 publications, 7.69%
Volgograd State University	Volgograd State University, 2, 7.69% Volgograd State University 2 publications, 7.69%
Springer Nature	Springer Nature, 1, 3.85% Springer Nature 1 publication, 3.85%
Wiley	Wiley, 1, 3.85% Wiley 1 publication, 3.85%
Elsevier	Elsevier, 1, 3.85% Elsevier 1 publication, 3.85%
American Chemical Society (ACS)	American Chemical Society (ACS), 1, 3.85% American Chemical Society (ACS) 1 publication, 3.85%
Royal Society of Chemistry (RSC)	Royal Society of Chemistry (RSC), 1, 3.85% Royal Society of Chemistry (RSC) 1 publication, 3.85%
American Physical Society (APS)	American Physical Society (APS), 1, 3.85% American Physical Society (APS) 1 publication, 3.85%
	1 2 3 4 5 6 7 8 9

Organizations from articles

Countries from articles

	5 10 15 20 25
Russia	Russia, 25, 80.65% Russia 25 publications, 80.65%
Italy	Italy, 4, 12.9% Italy 4 publications, 12.9%
Country not defined	Country not defined, 1, 3.23% Country not defined 1 publication, 3.23%
Czech Republic	Czech Republic, 1, 3.23% Czech Republic 1 publication, 3.23%
	5 10 15 20 25

Citing organizations

	10 20 30 40 50 60
Ufa Federal Research Center of the Russian Academy of Sciences	Ufa Federal Research Center of the Russian Academy of Sciences, 52, 20.23% Ufa Federal Research Center of the Russian Academy of Sciences 52 citations, 20.23%
Institute of Molecule and Crystal Physics of the Ufa Federal Research Center of the Russian Academy of Sciences	Institute of Molecule and Crystal Physics of the Ufa Federal Research Center of the Russian Academy of Sciences, 48, 18.68% Institute of Molecule and Crystal Physics of the Ufa Federal Research Center of the Russian Academy of Sciences 48 citations, 18.68%
M. Akmullah Bashkir State Pedagogical University	M. Akmullah Bashkir State Pedagogical University, 23, 8.95% M. Akmullah Bashkir State Pedagogical University 23 citations, 8.95%
Ufa Institute of Chemistry of the Ufa Federal Research Center of the Russian Academy of Sciences	Ufa Institute of Chemistry of the Ufa Federal Research Center of the Russian Academy of Sciences, 21, 8.17% Ufa Institute of Chemistry of the Ufa Federal Research Center of the Russian Academy of Sciences 21 citations, 8.17%
Ufa University of Science and Technology	Ufa University of Science and Technology, 21, 8.17% Ufa University of Science and Technology 21 citations, 8.17%
Organization not defined	Organization not defined, 15, 5.84% Organization not defined 15 citations, 5.84%
Saint Petersburg State University	Saint Petersburg State University, 11, 4.28% Saint Petersburg State University 11 citations, 4.28%
A.N.Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences	A.N.Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences, 10, 3.89% A.N.Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences 10 citations, 3.89%
Lomonosov Moscow State University	Lomonosov Moscow State University, 8, 3.11% Lomonosov Moscow State University 8 citations, 3.11%
University of Bologna	University of Bologna, 4, 1.56% University of Bologna 4 citations, 1.56%
AGH University of Krakow	AGH University of Krakow, 4, 1.56% AGH University of Krakow 4 citations, 1.56%
Ufa Institute of the Ufa Federal Research Center of the Russian Academy of Sciences	Ufa Institute of the Ufa Federal Research Center of the Russian Academy of Sciences, 2, 0.78% Ufa Institute of the Ufa Federal Research Center of the Russian Academy of Sciences 2 citations, 0.78%
Institute of Petrochemistry and Catalysis of the Ufa Federal Research Center of the Russian Academy of Sciences	Institute of Petrochemistry and Catalysis of the Ufa Federal Research Center of the Russian Academy of Sciences, 2, 0.78% Institute of Petrochemistry and Catalysis of the Ufa Federal Research Center of the Russian Academy of Sciences 2 citations, 0.78%
Mendeleev University of Chemical Technology of Russia	Mendeleev University of Chemical Technology of Russia, 2, 0.78% Mendeleev University of Chemical Technology of Russia 2 citations, 0.78%
Penza State University	Penza State University, 2, 0.78% Penza State University 2 citations, 0.78%
Shanghai University	Shanghai University, 2, 0.78% Shanghai University 2 citations, 0.78%
A.N. Frumkin Institute of Physical Chemistry and Electrochemistry of the Russian Academy of Sciences	A.N. Frumkin Institute of Physical Chemistry and Electrochemistry of the Russian Academy of Sciences, 1, 0.39% A.N. Frumkin Institute of Physical Chemistry and Electrochemistry of the Russian Academy of Sciences 1 citation, 0.39%
Moscow Institute of Physics and Technology	Moscow Institute of Physics and Technology, 1, 0.39% Moscow Institute of Physics and Technology 1 citation, 0.39%
Skolkovo Institute of Science and Technology	Skolkovo Institute of Science and Technology, 1, 0.39% Skolkovo Institute of Science and Technology 1 citation, 0.39%
National University of Science & Technology (MISiS)	National University of Science & Technology (MISiS), 1, 0.39% National University of Science & Technology (MISiS) 1 citation, 0.39%
Boreskov Institute of Catalysis of the Siberian Branch of the Russian Academy of Sciences	Boreskov Institute of Catalysis of the Siberian Branch of the Russian Academy of Sciences, 1, 0.39% Boreskov Institute of Catalysis of the Siberian Branch of the Russian Academy of Sciences 1 citation, 0.39%
Institute of Semiconductor Physics of the Siberian Branch of the Russian Academy of Sciences	Institute of Semiconductor Physics of the Siberian Branch of the Russian Academy of Sciences, 1, 0.39% Institute of Semiconductor Physics of the Siberian Branch of the Russian Academy of Sciences 1 citation, 0.39%
Institute for Metals Superplasticity Problems of the Russian Academy of Sciences	Institute for Metals Superplasticity Problems of the Russian Academy of Sciences, 1, 0.39% Institute for Metals Superplasticity Problems of the Russian Academy of Sciences 1 citation, 0.39%
Lobachevsky State University of Nizhny Novgorod	Lobachevsky State University of Nizhny Novgorod, 1, 0.39% Lobachevsky State University of Nizhny Novgorod 1 citation, 0.39%
Peter the Great St. Petersburg Polytechnic University	Peter the Great St. Petersburg Polytechnic University, 1, 0.39% Peter the Great St. Petersburg Polytechnic University 1 citation, 0.39%
Ufa State Petroleum Technological University	Ufa State Petroleum Technological University, 1, 0.39% Ufa State Petroleum Technological University 1 citation, 0.39%
National Research University of Electronic Technology	National Research University of Electronic Technology, 1, 0.39% National Research University of Electronic Technology 1 citation, 0.39%
Bukhara State University	Bukhara State University, 1, 0.39% Bukhara State University 1 citation, 0.39%
Physical-technical Institute NGO “Physics-Sun” of the Academy of Sciences of the Republic of Uzbekistan	Physical-technical Institute NGO “Physics-Sun” of the Academy of Sciences of the Republic of Uzbekistan, 1, 0.39% Physical-technical Institute NGO “Physics-Sun” of the Academy of Sciences of the Republic of Uzbekistan 1 citation, 0.39%
Cochin University of Science and Technology	Cochin University of Science and Technology, 1, 0.39% Cochin University of Science and Technology 1 citation, 0.39%
Heidelberg University	Heidelberg University, 1, 0.39% Heidelberg University 1 citation, 0.39%
ETH Zurich	ETH Zurich, 1, 0.39% ETH Zurich 1 citation, 0.39%
China Agricultural University	China Agricultural University, 1, 0.39% China Agricultural University 1 citation, 0.39%
National Sun Yat-sen University	National Sun Yat-sen University, 1, 0.39% National Sun Yat-sen University 1 citation, 0.39%
Sun Yat-sen University	Sun Yat-sen University, 1, 0.39% Sun Yat-sen University 1 citation, 0.39%
University College London	University College London, 1, 0.39% University College London 1 citation, 0.39%
Tianjin University	Tianjin University, 1, 0.39% Tianjin University 1 citation, 0.39%
Donghua University	Donghua University, 1, 0.39% Donghua University 1 citation, 0.39%
Shanghai Institute of Technology	Shanghai Institute of Technology, 1, 0.39% Shanghai Institute of Technology 1 citation, 0.39%
Changzhou University	Changzhou University, 1, 0.39% Changzhou University 1 citation, 0.39%
Anhui Medical University	Anhui Medical University, 1, 0.39% Anhui Medical University 1 citation, 0.39%
Qilu University of Technology	Qilu University of Technology, 1, 0.39% Qilu University of Technology 1 citation, 0.39%
University of Calabria	University of Calabria, 1, 0.39% University of Calabria 1 citation, 0.39%
Korea Institute for Advanced Study	Korea Institute for Advanced Study, 1, 0.39% Korea Institute for Advanced Study 1 citation, 0.39%
Comenius University Bratislava	Comenius University Bratislava, 1, 0.39% Comenius University Bratislava 1 citation, 0.39%
University of North Texas	University of North Texas, 1, 0.39% University of North Texas 1 citation, 0.39%

	10 20 30 40 50 60

Citing countries

	10 20 30 40 50 60 70 80 90 100
Russia	Russia, 94, 70.68% Russia 94 citations, 70.68%
Country not defined	Country not defined, 9, 6.77% Country not defined 9 citations, 6.77%
China	China, 7, 5.26% China 7 citations, 5.26%
Italy	Italy, 5, 3.76% Italy 5 citations, 3.76%
Poland	Poland, 4, 3.01% Poland 4 citations, 3.01%
France	France, 2, 1.5% France 2 citations, 1.5%
USA	USA, 2, 1.5% USA 2 citations, 1.5%
Republic of Korea	Republic of Korea, 2, 1.5% Republic of Korea 2 citations, 1.5%
Czech Republic	Czech Republic, 2, 1.5% Czech Republic 2 citations, 1.5%
Germany	Germany, 1, 0.75% Germany 1 citation, 0.75%
United Kingdom	United Kingdom, 1, 0.75% United Kingdom 1 citation, 0.75%
India	India, 1, 0.75% India 1 citation, 0.75%
Slovakia	Slovakia, 1, 0.75% Slovakia 1 citation, 0.75%
Uzbekistan	Uzbekistan, 1, 0.75% Uzbekistan 1 citation, 0.75%
Switzerland	Switzerland, 1, 0.75% Switzerland 1 citation, 0.75%
	10 20 30 40 50 60 70 80 90 100