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Статті в журналах з теми "Fertilisation procedure"
Metwally, Mostafa, Robin Chatters, Clare Pye, Munya Dimairo, David White, Stephen Walters, Judith Cohen, et al. "Endometrial scratch to increase live birth rates in women undergoing first-time in vitro fertilisation: RCT and systematic review." Health Technology Assessment 26, no. 10 (January 2022): 1–212. http://dx.doi.org/10.3310/jnzt9406.
Повний текст джерелаDaily, Michael F., Virginia H. Latham, Claudia M. Garcia, Cynthia L. Hockman, Helen Chun, Mark L. Oppenheimer, Steven P. West, et al. "Producing exposed cota-free embryos." Zygote 2, no. 3 (August 1994): 221–25. http://dx.doi.org/10.1017/s096719940000201x.
Повний текст джерелаMatłok, Natalia, Oskar Basara, Miłosz Zardzewiały, Józef Gorzelany, and Maciej Balawejder. "Effectiveness of a Complex Fertilisation Technology Applied to Zea mays, Assessed Based on Normalised Difference Vegetation Index (NDVI) from Terra Moderate Resolution Imaging Spectroradiometer (MODIS)." Agriculture 11, no. 8 (August 8, 2021): 754. http://dx.doi.org/10.3390/agriculture11080754.
Повний текст джерелаChen, Juan, Yun Qian, Yong Tan, and Hirofumi Mima. "Successful pregnancy following oocyte activation by strontium in normozoospermic patients of unexplained infertility with fertilisation failures during previous intracytoplasmic sperm injection treatment." Reproduction, Fertility and Development 22, no. 5 (2010): 852. http://dx.doi.org/10.1071/rd09268.
Повний текст джерелаNel, A. A., and A. A. Bloem. "The delta yield procedure for nitrogen fertilisation of maize in South Africa." South African Journal of Plant and Soil 23, no. 3 (January 2006): 203–8. http://dx.doi.org/10.1080/02571862.2006.10634755.
Повний текст джерелаMalo, Clara, Lydia Gil, Rafael Cano, Felisa Martinez, and Noelia Gonzalez. "Progesterone improves porcine in vitro fertilisation system." Acta Veterinaria Hungarica 62, no. 1 (March 1, 2014): 117–24. http://dx.doi.org/10.1556/avet.2013.048.
Повний текст джерелаZörb, Christian, Dorothee Steinfurth, Victoria Gödde, Karsten Niehaus, and Karl H. Mühling. "Metabolite profiling of wheat flag leaf and grains during grain filling phase as affected by sulfur fertilisation." Functional Plant Biology 39, no. 2 (2012): 156. http://dx.doi.org/10.1071/fp11158.
Повний текст джерелаSong, Y. P., M. Suquet, I. Quéau, and L. Lebrun. "Setting of a procedure for experimental fertilisation of Pacific oyster (Crassostrea gigas) oocytes." Aquaculture 287, no. 3-4 (February 2009): 311–14. http://dx.doi.org/10.1016/j.aquaculture.2008.10.018.
Повний текст джерелаStephenson, J. L., and B. G. Brackett. "Influences of zinc on fertilisation and development of bovine oocytes in vitro." Zygote 7, no. 3 (August 1999): 195–201. http://dx.doi.org/10.1017/s096719949900057x.
Повний текст джерелаJordan, Bertrand. "Scores polygéniques : vers l’embryon à la carte ?" médecine/sciences 36, no. 3 (March 2020): 289–91. http://dx.doi.org/10.1051/medsci/2020028.
Повний текст джерелаДисертації з теми "Fertilisation procedure"
Ratcliffe, Robert James. "New forms of hybrid musical discourse; an exploration of stylistic and procedural cross-fertilisation between contemporary art music and electronic dance music." Thesis, Keele University, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.572424.
Повний текст джерелаBruckner, Michael. "Biofluid Mechanics Of Embryo Transfer." Thesis, Lyon 1, 2013. http://www.theses.fr/2013LYO10159.
Повний текст джерелаThis thesis focuses on the study of the hydrodynamic behavior of an embryo during the transfer process following the in vitro fertilization. Worldwide, one in six couples experiences infertility problems. Today, 5 millions babies are born from an in-vitro fertilization since the first one in 1978. In 2009, 1.5 millions Assisted Reproductive Technology cycles have been started, resulting in 350 000 births. The total number of cycles per year is constantly increasing (from 5 to 10 %), and the number of ART cycles is believed to reach 4 millions per year in 2020. Although the fertilization step is now fairly mastered with a 80% success rate, the final stage consisting in the embryo transfer into the uterine cavity remains a critical step, since only 25% of the cycles lead to a live birth. Even though every cycle is expensive, no specific, optimized and operator-independent protocol has been developed yet. In this thesis, we first demonstrate the interest and the feasibility of a bio-engineering approach. Indeed, although the issue of the transfer depends on numerous chemical and physiological factors, this crucial step can also be studied from a fluid mechanical point of view. This step can be divided in several sub-steps : introduction of the catheter in the intra-uterine cavity, injection of the medium fluid containing one or several embryos, and the withdrawal of the catheter. One can identify several important parameters such as fluids viscosity, injections speeds, catheter withdrawal speed, catheter loading scheme and the geometries of the uterine cavity and the catheter. In a second part, we focus on the fluid ow patterns inside the uterine cavity during the injection. The influence of the system parameters is studied thanks to a computational solving of the Navier-Stokes equations in an idealized three-dimensional uterine cavity. A study of the potential trajectories of the embryos is also conducted and confronted against the location of optimal implantation zones but also risky zones. As the outcome of these computations, we are able to propose recommendations for physicians practicing embryo transfers. In the last part of the thesis, we discuss numerical methods for the fluid{structure interaction study of embryo transfer. The embryo is indeed submitted to potentially destructive stress constraints at injection time that we are not capable of defining precisely at the scale of the uterine cavity. With the aim of developing a mechanical model for the blastocyst to determine system parameters minimizing the constraints, we present the implementation of two Eulerian numerical methods. The first one is a fluid-structure level set method in a finite volume code benefiting from an automatic mesh refinement feature. The second one addresses a phase field method based on a Discontinuous Galerkin finite element formalism
(13991741), Lisa J. Maclellan. "Morphology and function of ovarian follicles and oocytes following superstimulation treatments in heifer calves." Thesis, 2001. https://figshare.com/articles/thesis/Morphology_and_function_of_ovarian_follicles_and_oocytes_following_superstimulation_treatments_in_heifer_calves/21377328.
Повний текст джерелаGenetic improvement in cattle has focused in recent years on the large reproductive potential that resides in the ovaries of females at an early age. It is estimated that approximately 150,000 oocytes are present in primordial follicles in foetal ovaries at birth, and recruitment of follicles from the primordial pool has been initiated by the time of birth. Further, follicular growth can be superstimulated in heifer calves from around 4 weeks of age by treatment with gonadotrophins, and oocytes recovered and placed through in vitro maturation and fertilisation procedures to produce viable embryos.
The capacity to use embryos derived from heifer calves has the potential to reduce generation intervals and increase the rates of genetic gain in cattle. Studies on embryo production from heifer calves have reported inconsistent and unpredictable responses to superstimulation of follicle growth with FSH, similar to that observed in sexually mature heifers. Heifer calves that had a relatively large (>10mm) follicle on the ovary at the end of superstimulation, had a smaller number of total follicles compared with heifer calves that did not have a large follicle on the surface of the ovary. This observation led to the suggestion that follicular interrelationships may occur from an early age in heifers, and that a large follicle may suppress the development of other follicles. Nutrition appears to influence ovarian follicle status in peri-pubertal and pubertal heifers and possibly the response to superstimulation of follicular growth in older animals. There may be a role, therefore, for nutrition in ovarian follicle growth and responses to superstimulation in heifer calves.
In a number of studies oocytes obtained from heifer calves were reported to have a reduced developmental competency in vitro compared with oocytes obtained from ovaries of post-pubertal heifers.
In cattle, treatment with agonists of gonadotrophin hormone releasing hormone (GnRH) desensitises the anterior pituitary gland to GnRH which blocks pulsatile secretion of LH but allows continued basal LH secretion. Antagonists of GnRH prevent both pulsatile and basal secretion of LH. It is possible that treatment with GnRH agonists and antagonists might be used to regulate gonadotrophin secretion in heifer calves and prevent the development of large (functionally dominant) follicles. Subsequent initiation of superstimulation when a pool of small gonadotrophinresponsive follicles are present on the ovaries, and maturing these follicles in synchrony in vivo, may allow a pool of oocytes at similar stages of maturation to be collected for in vitro procedures.
The first two experiments in this thesis examined the requirement of LH for oocyte maturation by treating calves with gonadotrophin hormone releasing hormone (GnRH) agonist and antagonist before and during superstimulation with FSH. Simultaneous treatment with a GnRH agonist during superstimulation of ovarian follicle growth with FSH tended to increase the number of follicles stimulated to grow and significantly increased the number of Grade A and Grade B oocytes collected. In a second experiment, treatment with a GnRH antagonist tended to increase blastocyst development rate after in vitro fertilisation. It was concluded from these findings that exposure of oocytes to pulsatile secretion of LH, and/or a 'pre-ovulatory like' surge release of LH, is not an obligatory requirement for oocyte growth and development in heifer calves.
A third experiment examined the effects of nutrition and growth rate on maturation of the reproductive endocrine axis and the response of calves to superstimulation of ovarian follicle growth with FSH. Heifer calves were raised on two planes of nutrition (relatively low and high) and subsequently superstimulated with FSH. The nutritional treatments resulted in a significant difference in growth rate between the two groups of heifers. However, there were no apparent differences in ovarian follicular responses to stimulation with FSH, oocytes recovered, or in vitro developmental competency of oocytes, between the two groups of heifers.
In the fourth experiment, in vitro developmental competency was compared between oocytes obtained from heifer calves superstimulated with FSH, heifer calves that had not undergone superstimulation and post-pubertal heifers and cows that had not been stimulated with FSH. There were no differences in developmental competency between Grade A and Grade B oocytes derived from the three groups of animals. This finding demonstrated that oocytes obtained from pre -pubertal heifers do not have an intrinsic reduced capacity for in vitro development compared with oocytes obtained from post -pubertal heifers.
The ultimate test of viability of embryos derived from heifer calves is the transfer to recipients and the birth of calves. The aim of the fifth experiment therefore was to test the viability of embryos derived from 10 week-old heifer calves in which ovarian follicular growth was superstimulated with FSH. Transfer of blastocysts produced from oocytes obtained from heifer calves to recipient sexually mature heifers resulted in the birth of normal calves.
In summary, the competency of oocytes collected from heifer calves from an early age has been well established in the series of experiments undertaken in this thesis. The use of superstimulation protocols with heifer calves pre-treated with a GnRH agonist or antagonists increased the number of Grade A and Grade B oocytes, and tended to increase the development to blastocyst post-fertilisation. Grade A and Grade B oocytes collected from heifer calves form blastocysts at rates comparable to oocytes collected from mature cows, and establish pregnancies which result in the birth of calves.
Книги з теми "Fertilisation procedure"
L'émergence de l'action de groupe, processus de fertilisation croisée. Aix-en-Provence: Presses universitaires d'Aix-Marseille, 2011.
Знайти повний текст джерелаWebb, Sandra M. In vitro fertilisation and related procedures in Western Australia, 1983-1987: A demographic, clinical, and economic evaluation of participants and procedures. Perth: Health Dept. of Western Australia, 1988.
Знайти повний текст джерелаBritain, Great. Human Fertilisation and Embryology (Procedure on Applications and Execution of Warrants) Regulations 2010. Stationery Office, The, 2010.
Знайти повний текст джерелаBritain, Great. Human Fertilisation and Embryology (Procedure for Revocation, Variation or Refusal of Licences) Regulations 2009. Stationery Office, The, 2009.
Знайти повний текст джерелаBritain, Great. Human Fertilisation and Embryology (Procedure for Revocation, Variation or Refusal of Licences) (Amendment) Regulations 2009. Stationery Office, The, 2009.
Знайти повний текст джерелаGilmore, Stephen, and Lisa Glennon. Hayes & Williams' Family Law. Oxford University Press, 2018. http://dx.doi.org/10.1093/he/9780198811862.001.0001.
Повний текст джерелаЧастини книг з теми "Fertilisation procedure"
Seta, Makoto. "Cross-Fertilisation and Conflicts between Courts and Tribunals: An Analysis from the Perspective of the United Nations Convention on the Law of the Sea." In International Procedure in Interstate Litigation and Arbitration, 401–23. Cambridge University Press, 2021. http://dx.doi.org/10.1017/9781108961387.018.
Повний текст джерелаJackson, Emily. "15. Assisted Conception." In Medical Law, 819–91. Oxford University Press, 2022. http://dx.doi.org/10.1093/he/9780192843456.003.0015.
Повний текст джерелаJackson, Emily. "15. Assisted Conception." In Medical Law, 792–860. Oxford University Press, 2019. http://dx.doi.org/10.1093/he/9780198825845.003.0015.
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