Results 11 to 20 of about 157,396 (310)

Accuracy of the FY-L formula in calculating intraocular lens power after small-incision lenticule extraction [PDF]

Frontiers in Medicine, 2023
PurposeThe study aimed to assess the accuracy of the FY-L formula in calculating intraocular lens (IOL) power after small-incision lenticule extraction (SMILE).MethodsFor the post-SMILE IOL calculation of the same eye, the IOL power targeting the pre ...
Yingfeng Hu, Liqun Lin, Danqi Zeng, Yan Wang, Rong Zhang, Zhe Zhang, Zhe Zhang, Zheng Wang, Guangbin Zhang, Xiangyu Ye, Xiangyu Ye   +10 more
doaj   +2 more sources

A simple formula for calculating resonance energy of benzenoid hydrocarbons

Macedonian Journal of Chemistry and Chemical Engineering, 2006
The topological resonance energy (TRE) of a catacondensed benzenoid hydrocarbon with h six-membered rings and K Kekulé structures can be calculated by the (approximate) formula TRE = Ah + B + CK e–Dh, where A = 0.136, B = –0.223, C = 0.281, and D = 0.454.
Ivan Gutman, Slavko Slavko Radenković
doaj   +2 more sources

An algorithm for calculating terms of the Stirling’s formula remainder

Computational and Applied Mathematics
In this paper, we deal with Stirling’s approximation to N!. We employ elementary mathematical techniques to provide an algorithm to quickly calculate many terms of Stirling’s formula remainder.
Fábio Antonio Dorini, Leyza Baldo Dorini   +1 more
openaire   +3 more sources

Commentary: Era of endless possibilities—Looking for a near-perfect intraocular lens calculating formula

Indian Journal of Ophthalmology, 2021
Arvind Kumar Morya
doaj   +2 more sources

Validation of a new formula for calculating standard liver volume

Asian Journal of Surgery, 2021
Xinyan Zhang, Bin Ni, Yifei He, Bo Liang
doaj   +3 more sources

Estimating Scheme Viscosity for Small-Scale Circulation with Implicit Finite-Difference Schemes [PDF]

E3S Web of Conferences, 2023
The article proposes a formula for calculating scheme viscosity, which manifests itself in calculations using implicit schemes for calculating the transfer of matter and momentum.
Salokhiddinov Abdulkhakim, Savitsky Andrey, McKinney Daene, Ashirova Olga   +3 more
doaj   +1 more source

Theoretical research of friction factor in hydraulically smooth pipes [PDF]

E3S Web of Conferences, 2021
The paper presents the disclosure of the problem of calculating the friction factor. This problem exists in the calculations of head losses for a given flow discharge and the geometric parameters of the pipes.
Khlapuk Mykola, Bezusyak Olexander, Volk Liubov, Zhang Zelu   +3 more
doaj   +1 more source

Testing a simple formula for calculating approximate intensity-duration-frequency curves

Environmental Research Letters, 2021
A simple formula for estimating approximate values of return levels for sub-daily rainfall is presented and tested. It was derived from a combination of simple mathematical principles, approximations and fitted to 10 year return levels taken from ...
Rasmus E Benestad, Julia Lutz, Anita Verpe Dyrrdal, Jan Erik Haugen, Kajsa M Parding, Andreas Dobler   +5 more
doaj   +1 more source

A Benchmark Similarity Measures for Fermatean Fuzzy Sets

Bulletin of the Section of Logic, 2022
In this paper, we utilized triangular conorms (S-norm). The essence of using S-norm is that the similarity order does not change using different norms.
Faiz Muhammad Khan, Imran Khan, Waqas Ahmad   +2 more
doaj   +1 more source

To calculate heat losses with flue gases of coal-fired boilers [PDF]

E3S Web of Conferences, 2021
The article is devoted to solving the problem of increasing the efficiency of solid fuel boilers ’ blast control systems. Existing algorithms for calculating losses with outgoing gases, the value of which determines the efficiency of the boiler blow ...
Gordin Sergey, Zaychenko Ilya, Sokolova Vera, Bazheryanu Victoria   +3 more
doaj   +1 more source