Results 21 to 30 of about 2,208,448 (255)

Evaluation of Spermatological Parameters of Frozen Bull Semen with Conventional and CASA (Computer-Aided Sperm Analysis) Method

open access: yesİstanbul Üniversitesi Veteriner Fakültesi Dergisi, 2016
The aim of this study was to compare the assessments made by the CASA system and subjective method (by using phase-contrast microscope) for spermatological examinations of imported and locally produced semen.
Necmettin TEKİN   +5 more
doaj   +1 more source

Current Medical, Legal and Demographic Perspectives on Artificial Reproduction in Czechoslovakia

open access: yes, 1989
This paper examines artificial reproduction (AR) within a broad comparative perspective and with specific reference to Czechoslovak law, medicine, and demography.
Heitlinger, Alena
core   +1 more source

ADVERSE EFFECTS OF NICKEL ON TESTICULAR EFFICIENCY OF MALE RABBITS

open access: yesZagazig Journal of Pharmaceutical Sciences, 1986
This study was designed to understand the role of nickel chloride (Nicl2) on the testicular efficiency of male rabbits. Effects of low (200 µg / animal ) and high (1000 µg / animal) doses of Nicl2 on the level of testosterone and estradiol -17β hormones ...
Usama Ali   +2 more
doaj   +1 more source

A Category Theoretical Argument Against the Possibility of Artificial Life [PDF]

open access: yes, 2006
One of Robert Rosen's main contributions to the scientific community is summarized in his book 'Life itself'. There Rosen presents a theoretical framework to define living systems; given this definition, he goes on to show that living systems are not ...
Chu, Dominique, Ho, W.
core   +1 more source

TRIALS TO IMPROVE THE VIABILITY OF RABBIT SEMEN AT VARIABLE CONDITIONS OF PRESERVATION USING DIFFERENT DILUENTS

open access: yesAssiut Veterinary Medical Journal, 2007
Ten sexually mature rabbit bucks of (NZW) were used in this study. The present study aimed to investigate the effect of some diluents and differents regimes of dilution and preservation on the viability of rabbit semen .
Rowida M.R.,, Osman R.H., Mona H.Shaker
doaj   +1 more source

EFFECT OF NICKEL ADMINISTRATION ON SOME BIOCHEMICAL PARAMETERS AND OVARIAN HORMONES IN FEMALE RABBITS

open access: yesZagazig Journal of Pharmaceutical Sciences, 1996
This study was designed to clarify the toxic effect of low and high doses of nickel on reproductive functions of immature rabbits treated with PMSG ,with trials to restrict the harmful effects of nickel administration Thirty seven immature female New ...
Abdel-Mohsen Hamam   +2 more
doaj   +1 more source

Decoding the dynamic extracellular matrix in cancer—3D models and bioscaffolds rewire the rules of tumor progression

open access: yesFEBS Letters, EarlyView.
Cancer progression is regulated by the dynamic matrix code of the tumor microenvironment, which influences cellular behavior and disease development. Importantly, matrix remodeling in three‐dimensional cancer models more accurately reflects in vivo conditions compared to conventional two‐dimensional systems.
Sylvia Mangani   +3 more
wiley   +1 more source

Cryoprotective effects of cholesterol-loaded cyclodextrin and iodixanol on ram sperm: assessment of post-thaw quality and in vitro fertilization outcomes

open access: yesBMC Veterinary Research
Background This study aimed to investigate the effects of cholesterol-loaded cyclodextrin (CLC) and iodixanol, added individually or in combination to a ram semen extender, on post-thaw sperm quality, in vitro fertilization outcomes, and embryo ...
Ramazan Arıcı   +6 more
doaj   +1 more source

Microbiome‐blood–brain barrier interactions in aging — mechanisms and therapeutic potential

open access: yesFEBS Letters, EarlyView.
Aging reshapes the gut microbiome (↓SCFA‐producing commensals; ↑pro‐inflammatory outputs), shifting circulating metabolites (↓SCFAs; ↑LPS, ↑TMAO, ↑PAA) that act at the BBB to increase nonspecific transcytosis, alter transport, and promote astrocyte reactivity, heightening brain vulnerability.
Daniel Cuervo‐Zanatta   +3 more
wiley   +1 more source

National Security Commission on Artificial Intelligence: Interim Report, November 2019 [PDF]

open access: yes, 2019
Report presenting the National Security Commission on Artificial Intelligence's initial (NSCAI)'s preliminary assessment of artificial intelligence (AI).
National Security Commission on Artificial Intelligence (U.S.)
core  

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