Results 171 to 180 of about 4,698 (195)

Maternal age and blastocyst morphology as independent predictors of embryonic euploidy in preimplantation genetic testing cycles: A retrospective cohort study. [PDF]

Medicine (Baltimore)
Huang H, Liu F, Huang K, Deng L, Liang X, Liu X.   +5 more
europepmc   +1 more source

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Insulin, androgen, and gonadotropin concentrations, body mass index, and waist to hip ratio in the first years after menarche in girls with regular menstrual cycles, irregular menstrual cycles, or oligomenorrhea.

The Journal of clinical endocrinology and metabolism, 2000
Data on changes in hormone concentrations during the first years after menarche are scarce. We studied the relation between gynecological age (age minus age at menarche), hormone concentrations, and body measurements from the lst to the 6th yr after menarche in 229 observations of girls with regular menstrual cycles, 157 observations of girls with ...
Hooff, M.H.A. van, Voorhorst, F.J., Kaptein, M.B.H., Hirasing, R.A., Koppenaal, C., Schoemaker, J.   +5 more
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Influence of body mass index and slimming habits on menstrual pain and cycle irregularity

Journal of Biosocial Science, 1996
SummaryUsing a cross-sectional sample of 1147 urban adolescents, aged between 14 and 20 years, the variability of some menstrual cycle indicators was related to weight loss. Nearly 40% of the adolescents tried to lose weight and the results showed that attempting to lose weight is significantly associated with increased prevalence of menstrual ...
P, Montero, C, Bernis, V, Fernandez, S, Castro   +3 more
openaire   +2 more sources

Irregular Geneva-Wheel and Geneva-Slider Mechanisms for the Generation of Nonuniform Index Ratios During a Cycle

Journal of Mechanisms, Transmissions, and Automation in Design, 1986
The article deals with Geneva mechanisms driven with multiple cranks for the generation of multiple indexings with different index ratios during a cycle of motion. Both, Geneva-wheel mechanisms, and Geneva-slider mechanisms for the generation of rotary and linear motions with dwells, respectively, are considered.
openaire   +1 more source

On total irregularity index of trees with given number of segments or branching vertices

Chaos, Solitons and Fractals, 2022
Akbar Ali, Akhlaq Bhatti, Shamaila Yousaf   +2 more
exaly  

Integrated approach between seismic resilience and vulnerability indexes with regularity index for vertical irregularity planar frames risk assessment

Bulletin of Earthquake Engineering, 2022
Fadzli Mohamed Nazri, Moustafa Moufid Kassem, Mohamed Nazri Fadzli   +2 more
exaly  

On ve-Degree Irregularity Index of Graphs and Its Applications as Molecular Descriptor

Symmetry, 2022
Sourav Mondal, Kinkar Chandra Das, Mondal Sourav   +2 more
exaly  

Mathematical Properties of a Novel Graph-Theoretic Irregularity Index with Potential Applicability in QSPR Modeling

Mathematics, 2022
Asad Khan, Khan Asad, Hayat Sakander
exaly  

Quantification of Degree of Irregularity in Mass Irregular RC Buildings Using Irregularity Index Based on Dynamic Characteristics

Lecture Notes in Civil Engineering, 2023
Bandara C S, Jayasinghe J A S C
exaly  

Machine learning approach for prediction of ionospheric irregularities on ROTI index over the Northern anomaly crest in Egypt during solar cycle 24

Advances in Space Research
Hager M. Salah, Rabiu Babatunde, Daniel Okoh, M. Youssef, Ayman Mahrous   +4 more
openaire   +1 more source