Search

Your search keyword '"Omri Levy"' showing total 2 results
Start Over Author "Omri Levy" Search Limiters Full Text
2 results on '"Omri Levy"'

1. General anesthesia with propofol during oocyte retrieval and in vitro fertilization outcomes: retrospective cohort study

Author

Einat Haikin Herzberger, Omri Levy, Bei Sun, Netanella Miller, Roni Rahav, Elad Dana, Shaul Raviv, Anat Hershko-Klement, and Amir Wiser

Subjects
Medicine, Science
Abstract

Abstract General anesthesia is frequently administered during oocyte retrieval. Its effects on the outcomes of IVF cycles are uncertain. This study investigated whether administration of general anesthesia (specifically propofol) during oocyte retrieval affects IVF outcomes. A total of 245 women undergoing IVF cycles were included in this retrospective cohort study. IVF outcomes of 129 women who underwent oocyte retrieval under propofol anesthesia and 116 without anesthesia were compared. Data were adjusted for age, BMI, estradiol on triggering day and total gonadotropin dose. The primary outcomes were fertilization, pregnancy and live birth rates. A secondary outcome was the efficiency of follicle retrieval associated with the use of anesthesia. Fertilization rate was lower in retrievals under anesthesia compared to without (53.4% ± 34.8 vs. 63.7% ± 33.6, respectively; p = 0.02). There was no significant difference in the ratio of expected to retrieved oocytes between retrievals with and without anesthesia (0.8 ± 0.4 vs. 0.8 ± 0.8, respectively, p = 0.96). The differences in pregnancy and live birth rates between the groups were not statistically significant. General anesthesia administered during oocyte retrieval may have adverse effects on the fertilization potential of oocytes. This impact on the developmental potential of oocytes may lead to negative IVF outcomes and should be investigated further.

Published
2023
Full Text
View/download PDF

2. Blind channel estimation for MLSE receiver in high speed optical communications: theory and ASIC implementation

Author

Omri Levy, Dan Sadot, Gilad Katz, and Albert Gorshtein

Subjects
Signal processing, business.industry, Computer science, Maximum likelihood sequence estimation, Atomic and Molecular Physics, and Optics, Optics, Application-specific integrated circuit, Polarization mode dispersion, Dispersion (optics), Bit error rate, Electronic engineering, business, Digital signal processing, Communication channel, Jitter
Abstract

Blind channel estimation is critical for digital signal processing (DSP) compensation of optical fiber communications links. The overall channel consists of deterministic distortions such as chromatic dispersion, as well as random and time varying distortions including polarization mode dispersion and timing jitter. It is critical to obtain robust acquisition and tracking methods for estimating these distortions effects, which, in turn, can be compensated by means of DSP such as Maximum Likelihood Sequence Estimation (MLSE). Here, a novel blind estimation algorithm is developed, accompanied by inclusive mathematical modeling, and followed by extensive set of real time experiments that verify quantitatively its performance and convergence. The developed blind channel estimation is used as the basis of an MLSE receiver. The entire scheme is fully implemented in a 65 nm CMOS Application Specific Integrated Circuit (ASIC). Experimental measurements and results are presented, including Bit Error Rate (BER) measurements, which demonstrate the successful data recovery by the MLSE ASIC under various channel conditions and distances.

Published
2013

Catalog

Books, media, physical & digital resources
See catalog results