Literatura académica sobre el tema "Human reproduction"

Crea una cita precisa en los estilos APA, MLA, Chicago, Harvard y otros

Elija tipo de fuente:

Consulte las listas temáticas de artículos, libros, tesis, actas de conferencias y otras fuentes académicas sobre el tema "Human reproduction".

Junto a cada fuente en la lista de referencias hay un botón "Agregar a la bibliografía". Pulsa este botón, y generaremos automáticamente la referencia bibliográfica para la obra elegida en el estilo de cita que necesites: APA, MLA, Harvard, Vancouver, Chicago, etc.

También puede descargar el texto completo de la publicación académica en formato pdf y leer en línea su resumen siempre que esté disponible en los metadatos.

Artículos de revistas sobre el tema "Human reproduction"

1

Corso, Simona, Florian Mussgnug y Virginia Sanchini. "Imagining Human Reproduction. Introduction: Imagining Human Reproduction". Phenomenology and Mind 19 (2020): 12. http://dx.doi.org/10.17454/pam-1901.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
2

Volkova, Yulia F. "REPRODUCTIVE RIGHTS IN THE FOURTH GENERATION HUMAN RIGHTS SYSTEM". Bulletin of Alfred Nobel University Series "Law" 1, n.º 8 (3 de julio de 2024): 39–48. http://dx.doi.org/10.32342/2709-6408-2024-1-8-4.

Texto completo
Resumen
The article is devoted to the study of human reproductive rights in the system of rights of the fourth generation, the formation of which is connected with scientific progress in the development of medicine and informatics. It is established that modern studies of the human right to reproduction (reproduction) are mostly considered through the prism of such broader concepts as "reproductive rights", "somatic rights", "biological rights". It was determined that in the structure of human somatic rights, as the rights of the new fourth generation, a significant group is occupied by reproductive rights related to human reproduction of future generations. It is emphasized that the main function of a person is the reproductive function, which is based on the natural desire to have a child. Attention is focused on the fact that one of the problems at present can be called the inability of people of reproductive age to conceive and give birth to a child naturally. Today, men and women have this opportunity thanks to the use of assisted reproductive technologies that arose with the development of biomedicine, which includes methods of artificial influence on reproduction, treatment of people from diseases that prevent the body from bearing and giving birth to a healthy child. The work established that one of the most important principles of reproductive rights is the principle of human freedom in choosing the method of exercising the right to reproduction. International and national legislation is based on the fact that every person has the right to voluntarily and freely make decisions about the birth of children, their number and intervals between births, using assisted reproductive technologies: termination of pregnancy, sterilization, use of contraceptives, methods of artificial insemination, etc. It was revealed that the state of implementation of assisted reproductive technologies in Ukraine today is characterized by a special need of the population. The analysis of regulatory and legal documents of Ukraine, international treaties on the protection of human reproductive health, in particular the treatment of infertility with the help of programs of auxiliary reproductive technologies, was carried out. It was established that the legal framework is outdated, that is, it does not correspond to the modern, innovative scientific realities of modern Ukrainian society, and is mostly permissive in nature. It is considered expedient to initiate the development and adoption of a special law in the Verkhovna Rada of Ukraine, which would clearly define the concept of "reproductive rights", establish the scope of these rights, and establish the obligations and responsibilities of subjects for violations of reproductive rights.
Los estilos APA, Harvard, Vancouver, ISO, etc.
3

Kim, Yongsoon, YoungJoon Park, JoonYeon Hwang y KyuBum Kwack. "Comparative genomic analysis of the human and nematode Caenorhabditis elegans uncovers potential reproductive genes and disease associations in humans". Physiological Genomics 50, n.º 11 (1 de noviembre de 2018): 1002–14. http://dx.doi.org/10.1152/physiolgenomics.00063.2018.

Texto completo
Resumen
Reproduction is an important biological process. However, studies of human reproduction at the molecular level are limited due to the difficulty of performing in vivo studies. Hence, a mechanistic understanding of human reproduction remains still poor. Thus, it is important to use an alternative model organism for mechanistic studies of human reproduction. In this study, we used the nematode Caenorhabditis elegans as a model for studying human reproduction and identified 61 human and 535 worm reproductive genes through a combination of comparative genomic and Gene Ontology (GO) analyses. Interestingly, in terms of sex specificity, the number of male-specific genes was greater than the number of female-specific genes. Gene enrichment analysis identified biologically significant processes such as protein localization to cajal bodies/telomeres/nuclear bodies/chromosomes, helicase activity, pyrimidine biosynthesis, and determination of adult lifespan. Regarding the analysis of human reproductive diseases among the identified genes, 10 and 12 genes were identified in the human- and C. elegans-based analyses, respectively. In addition, RNA interference knockdown of a newly identified F52H2.6/DHCR24 gene increased brood size and ovulation/egg-laying rate in C. elegans. Therefore, gene identification, disease associations, and a proof-of-concept experiment using C. elegans will not only provide insights into mechanistic study of human reproduction, but also demonstrate the utility in studying human reproduction.
Los estilos APA, Harvard, Vancouver, ISO, etc.
4

Jasienska, Grazyna. "Costs of reproduction and ageing in the human female". Philosophical Transactions of the Royal Society B: Biological Sciences 375, n.º 1811 (21 de septiembre de 2020): 20190615. http://dx.doi.org/10.1098/rstb.2019.0615.

Texto completo
Resumen
Evolutionary theories of ageing point to reproduction as a significant factor to consider when asking why ageing occurs and why there is inter-individual variation in its progression. Reproduction in human females is costly, in terms of energy, nutrients and metabolic adjustments. Thus, it is expected that women who experienced high reproductive effort resulting from multiple reproductive events will age faster. However, the evidence for long-term negative effects of reproduction is not conclusive. The lack of understanding of whether there are trade-offs between reproduction and ageing in women is partly due to methodological challenges. The costs of reproduction are often calculated based only on parity, while other elements contributing to these costs (e.g. breastfeeding, timing of reproduction) are neglected, which may significantly underestimate the total costs and obscure the all-important inter-individual variation in such costs. Costs must be evaluated in relation to individual characteristics, including developmental conditions, nutritional status and social support that a mother receives during reproduction. Furthermore, ageing and health must be assessed based on comprehensive markers rather than arbitrarily assembled variables. Finally, longitudinal rather than cross-sectional studies and new statistical approaches are needed to reveal how much of a decline in health and progressing ageing can actually be attributed to past reproductive processes. This article is part of the theme issue ‘Evolution of the primate ageing process'.
Los estilos APA, Harvard, Vancouver, ISO, etc.
5

Cohen, Alexander R. "Truly Human Reproduction". Journal of Philosophical Research 32, n.º 9999 (2007): 305–13. http://dx.doi.org/10.5840/jpr_2007_25.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
6

Edwards, R. G. y H. K. Beard. "Molecular Human Reproduction". Human Reproduction 10, n.º 3 (marzo de 1995): 483. http://dx.doi.org/10.1093/oxfordjournals.humrep.a135967.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
7

Edwards, R. G., Helen Beard, Caroline Blackwell, Fiona Bennett, Claire Dowse y Nancy Hillelson. "Human Reproduction 1993". Human Reproduction 8, n.º 1 (enero de 1993): 1. http://dx.doi.org/10.1093/oxfordjournals.humrep.a137853.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
8

Edwards, R. G. "Human Reproduction Updates". Human Reproduction 8, n.º 1 (enero de 1993): 131. http://dx.doi.org/10.1093/oxfordjournals.humrep.a137862.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
9

Piñero, Verónica B. "Canadian International Human Rights Obligations in the Context of Assisted Human Reproduction". Canadian Yearbook of international Law/Annuaire canadien de droit international 46 (2009): 193–240. http://dx.doi.org/10.1017/s0069005800009577.

Texto completo
Resumen
SummaryIn Canada, as in most countries, assisted human reproduction has become accessible treatment for individuals who wish to conceive. Scientific advancements in the area of human reproduction have led to the enactment of legislation that attempts to regulate this novel field. The Canadian Assisted Human Reproduction Act (2004) identifies the health and wellbeing of children born through reproductive technologies as a paramount principle in all decisions respecting their use. On the other hand, and surprisingly, the statute restricts access by offspring to information that can lead to identification of their genitors. The disclosure of donors’ identity to the recipients of reproductive materials is quite limited. According to this article, this legislation is in violation of international human rights law on health, identity, and family relations to which Canada is a party. The first part of the article explores international human rights law on identity, health, and family relations rights that Canada has signed, ratified, or acceded to. The second part discusses whether the Canadian legal system is in line with the relevant international human rights obligations identified earlier and asserts that there is scope for judicially interpreting Canadian law in such a way that would conform to those obligations.
Los estilos APA, Harvard, Vancouver, ISO, etc.
10

Sang, Qing, Pierre F. Ray y Lei Wang. "Understanding the genetics of human infertility". Science 380, n.º 6641 (14 de abril de 2023): 158–63. http://dx.doi.org/10.1126/science.adf7760.

Texto completo
Resumen
Reproduction involves a wide range of biological processes, including organ formation and development, neuroendocrine regulation, hormone production, and meiosis and mitosis. Infertility, the failure of reproduction, has become a major issue for human reproductive health and affects up to one in seven couples worldwide. Here, we review various aspects of human infertility, including etiology, mechanisms, and treatments, with a particular emphasis on genetics. We focus on gamete production and gamete quality, which is the core of successful reproduction. We also discuss future research opportunities and challenges to further expand our understanding of human infertility and improve patient care by providing precision diagnosis and personalized treatments.
Los estilos APA, Harvard, Vancouver, ISO, etc.
Más fuentes

Tesis sobre el tema "Human reproduction"

1

Tang, Shiu-wai. "Reproduction has never been natural the social construction of reproduction in the age of new reproductive technologies /". Hong Kong : University of Hong Kong, 2000. http://sunzi.lib.hku.hk/hkuto/record.jsp?B22331888.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
2

Alghrani, Amel. "Human reproduction : regulating the third phase". Thesis, University of Manchester, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.495743.

Texto completo
Resumen
Human reproduction has been aptly split into three distinct eras. The first of these is when sexual intercourse results in conception, followed by pregnancy and childbirth. The second era of human reproduction occurs via in vitro fertilisation (IVF), whereby the foetus is fertilised outside the woman, but is later implanted into a female host where it is gestated until birth. In the third phase, the foetus is fertilised and gestated entirely in vitro, outside the female host and in an artificial womb/incubator (ectogenesis). Reproductive technologies are marked by the rapidity in which they develop, and as the reproductive revolution shows no sign of relenting, science may be about to propel us into this third wave of reproduction.
Los estilos APA, Harvard, Vancouver, ISO, etc.
3

Wilson, Poe Emma. "Vitrification of day 5/6 human morulas/blastocysts: A 10 year retrospective study in a private assisted reproductive techniques [ART] clinic". Thesis, Stellenbosch : Stellenbosch University, 2015. http://hdl.handle.net/10019.1/96876.

Texto completo
Resumen
Thesis (MMed)--Stellenbosch University, 2015.
ENGLISH ABSTRACT: This study was designed to retrospectively evaluate the established embryo vitrification/warming programme currently implemented at Drs Aevitas Institute for Reproductive Medicine and to look at factors that might play a role in optimizing the pregnancy outcomes thereof. Vitrification is the achievement of a “state of suspended animation” wherein molecular translational motions are arrested without structural reorganization of the liquid. In embryo vitrification it involves placement of the embryo in a very small volume of vitrification medium that must be cooled at extremely high cooling rates. The vitrification medium contains cryoprotectants to prevent any cryoinjury from occurring to the embryo. This process was initially proposed to effectively manage supernumerary embryos, but it has also provided a viable method of reducing costs for additional embryo transfers as well as the reduction of the incidence of multiple births. Patients who are at risk of ovarian hyper stimulation syndrome (OHSS) can also have all of their embryos vitrified in advance to reduce the likelihood of adverse clinical symptoms if a pregnancy is established. Throughout the period in which vitrification has been in practice, there have been advances in technology as well as continual research being conducted to establish whether newly suggested techniques do, in fact, optimize the outcomes of vitrification. Focus has subsequently been applied to the carrier device used for vitrification, the day on which the embryos are vitrified and stored, as well as the number of embryos transferred in each respective cycle, all to ensure the most favourable outcome. This retrospective study confirmed the use of the Cryotop® as the most viable carrier device for successful survival and pregnancy outcomes. Transfer of day 5 vitrified embryos resulted in significantly higher pregnancy rates compared to day 6 vitrified embryos. Results also indicated that the number of embryos transferred does indeed have a significant effect on the pregnancy outcome and consequently we can possibly argue against the implementation of single embryo transfer in the vitrification programme. Investigation into the effect of female age, specifically oocyte age, on each of these categories indicated that reduced age can be associated with optimal outcomes; however this could not be proven statistically in this cohort of patients. To further look at optimization of the vitrification/warming programme, a Literature Survey was conducted to ascertain the results after Assisted Hatching in frozen/warmed human embryos. Assisted Hatching has been proposed as a solution to Zona Pellucida hardening, which has been found to occur during vitrification. The need for further studies and a meta-analysis of the literature is confidently proposed, as well as a Prospective Study to evaluate the effect of Laser Assisted Hatching in the human blastocyst vitrification/warming programme at Drs Aevitas Institute for Reproductive Medicine.
AFRIKAANSE OPSOMMING: Hierdie studie is ontwerp om die gevestigde embrio vitrifikasie/ontdooi program by Drs Aevitas Instituut vir Reproduktiewe Medisyne, retrospektief te evalueer en die faktore te optimaliseer wat swangerskap uitkomste kan beïnvloed. Vitrifikasie is die proses waardeur die molekulere aktiwiteit binne die embrio in ‘n staat van arres gehou word sonder om die strukture binne die sitplasma te versteur. Dit behels die plasing van ʼn embrio in 'n klein hoeveelheid vitrifikasie medium wat teen 'n hoë tempo afgekoel word. Die vitrifikasie medium bevat kriobeskermmiddels wat die embrio tydens die vitrifikasie proses teen moontlike skade beskerm. Hierdie proses is aanvanklik voorgestel om oortollige embrio’s doeltreffend te bestuur. Dit bied ʼn koste effektiewe metode vir embrio terugplasing, en verlaag die insidensie van veelvoudige swangerskap. Vitrifikasie bied pasiënte met ʼn hoë risiko vir ovariale hiperstimulasiesindroom (OHSS) ‘n alternatief om nadelige kliniese simptome te vermy indien ʼn swangerskap bereik word. Tegnologiese vordering en voortdurende navorsing ondersoek voortdurend nuwe tegnieke vitrifikasie uitkomste te optimaliseer. Fokus word geplaas op die draertoestel wat gebruik word vir vitrifikasie, die dag waarop die embrio's gevitrifiseer en gestoor word, sowel as die aantal embrio’s wat met elke vitrifikasie siklus teruggeplaas word. Hierdie retrospektiewe studie het bevestig dat die gebruik van die Cryotop® die mees suksesvolle toestel vir oorlewing en swangerskap uitkomste is. Die terugplasing van dag 5 gevitrifiseerde embrios het beduidende hoër swangerskapsyfers as dag 6 embrios tot gevolg gehad. Die resultate het ook aangedui dat die aantal embrio's wat teruggeplaas word 'n beduidende uitwerking op die swangerskapsyfer het. Daar kan dus moontlik teen die implementering van 'n enkel embrio-terugplasing neiging in die vitrifikasie program geargumenteer word. Resultate het ook getoon dat optimale uitkomste verwant is aan ʼn laer oösiet ouderdom, alhoewel dit nie in die groep pasiente statisties bewys kon word nie. 'n Literatuurstudie oor AH (Assisted Hatching) op gevitrifiseerde/ontdooide menslike embrio’s is uitgevoer om die vitrifikasie/ontdooi program verder te optimaliseer. AH bied ‘n oplossing vir Zona pellucida verharding, wat tydens vitrifikasie plaasvind. Verdere studies, 'n meta-analise van die literatuur, sowel as 'n prospektiewe studie om die effek van laser AH in gevitrifiseerde/ontdooide menslike blastosiste by Drs Aevitas Instituut vir reproduktiewe medisyne te evalueer, word voorgestel.
Los estilos APA, Harvard, Vancouver, ISO, etc.
4

Fasano, Giovanna. "Contribution of vitrification to human assisted reproduction". Doctoral thesis, Universite Libre de Bruxelles, 2013. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/209484.

Texto completo
Resumen
La cryopréservation, dans le domaine de la reproduction médicalement assistée, constitue depuis de nombreuses années une branche suscitant beaucoup d’intérêts et d’espoirs. En effet, de nombreuses équipes de recherche se sont attelées à mettre au point et à améliorer des protocoles permettant de conserver les gamètes, les embryons et les tissus reproducteurs.

Malgré le fait que la cryopréservation soit une technique très attractive, elle peut avoir des effets délétères sur les cellules. Les protocoles expérimentaux visent donc à minimiser ces effets afin d’augmenter la survie et la compétence cellulaire après décongélation.

Les deux méthodes les plus utilisées, la congélation lente et la vitrification, présentent chacune des avantages et des inconvénients. En effet, la première ne permet pas d’éliminer la cristallisation intracellulaire. Quant à la seconde, elle empêche la formation de cristaux de glace mais pourrait provoquer une toxicité due à la forte concentration des cryoprotecteurs.

Cette thèse de doctorat propose plusieurs objectifs :

•\
Doctorat en Sciences biomédicales et pharmaceutiques
info:eu-repo/semantics/nonPublished

Los estilos APA, Harvard, Vancouver, ISO, etc.
5

Kadva, Aban. "Melatonin and LH pulsatility in human reproduction". Thesis, Queen Mary, University of London, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.272564.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
6

Orrmalm, Auran Alex. "Från pre-human till post-human : Embryots reproduktiva status i skärningspunkten mellan stat och medicin". Thesis, Södertörns högskola, Institutionen för kultur och lärande, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:sh:diva-19571.

Texto completo
Resumen
The aim of the thesis is twofold: the first aim is to identify a number of reproductive logics that are used to construct Swedish regulation of embryo donation for reproductive use as either ethical or unethical in the governmental – and medical discussions – and to examine how these logics are interconnected with notions of gender and parenthood. The second aim is to identify a number of tensions that arise in the application of the governmental ethical logic on the embryo and embryo donation and discuss how these tensions can be solved with a feminist material approach. I argue that the terminology used to distinguish between genetic, biological, social and legal parenthood in my material is insufficient for understanding the value of the embryo outside its pre-human status. I therefore argue for an embryonic feminist bioethics that is attentive to the embryos post-human status, and for a reformulation of the parenthood terminology in line with what I call „reproductive ties‟.
Los estilos APA, Harvard, Vancouver, ISO, etc.
7

Wilkinson, Anne. "Genentic techniques in human reproduction : the ethical implications". Thesis, University of Leeds, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.421360.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
8

Reece, C. "Aspects of reproduction in the European rabbit (O. cuniculus) L". Thesis, University of East Anglia, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.355356.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
9

Roberts, A. C. "The neurendocrine basis of seasonal reproduction in the Syrian hamster". Thesis, University of Cambridge, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.372300.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
10

Cornet, Bartolomé David. "Molecular determinants of human oocyte quality in assisted reproduction". Doctoral thesis, Universitat de Barcelona, 2019. http://hdl.handle.net/10803/667566.

Texto completo
Resumen
Infertility, defined by the World Health Organization (WHO) as the inability to conceive after a year of unprotected sex, is a disease that affects 1 in 9 couples of reproductive age worldwide. Most of these couples will only achieve pregnancy through assisted reproduction techniques. In recent decades, many improvements have been made in this field, but no method has been able to achieve 100% success. There are many variables that could affect the outcome of assisted reproduction cycles, one of the most important is the quality of the woman's oocytes. Maternal age is the most important factor affecting women’s ability to conceive and give birth, since female reproductive aging is associated with reduced oocyte quality; however, the underlying molecular mechanisms remain poorly understood. It is also well established that as woman age increases, her ovarian reserve diminishes. However, the role of ovarian reserve in the decline of oocyte quality with age is currently unknown. The developmental competence of an oocyte is its ability to sustain embryonic development until embryonic genome activation. It is determined by the transcripts (coding and non-coding RNAs) accumulated during oocyte maturation. The lack of transcription during final oocyte maturation suggests that regulation of the genes involved in this process occurs at the post-transcriptional level. Among the possible mechanisms, alternative splicing (AS) of the messenger RNA could be involved. Studying oocyte gene expression and the spliced mRNA isoforms might provide novel information on the molecular mechanisms driving early development, and might be a source of potential biomarkers of oocyte quality. The main objective of this thesis is to explore new possibilities for the identification of oocyte quality biomarkers at the molecular level in order to better understand the oocyte and how its developmental competence can be improved. For this, the results of oocytes from women with different age and ovarian reserve have been compared. In addition, to identify non-invasive biomarkers for oocyte developmental competence, the evaluation of the association between the expression analysis of different aging markers in human cumulus cells (CCs), the age and ovarian reserve and the oocyte maturation rates was conducted. Finally, because many of the oocytes used were vitrified, the effect of vitrification on oocyte developmental competence was analysed by comparing the reproductive outcomes of fresh and vitrified oocytes from the same stimulation cycle. The results suggest an important role for ncRNAs and alternative splicing in human oocyte biology. Age and ovarian reserve have been shown to independently affect the ncRNAs transcriptome of in vivo matured oocytes. These results might provide valuable information for the search of oocyte quality markers, and for the (re)interpretation of existing dataset. On the other hand, differences in transcribed splicing variants can also provide biomarkers of oocyte quality, since the profile of confirmed AS events could determine the specific transcriptome of the mature oocyte. The expression of common somatic aging markers in CCs didn’t show a clear correlation between the analysed genes and age, suggesting that CCs of reproductively old women do not present the typical transcriptome of aged tissues. In addition, when looking at future clinical applications, these markers have not been found useful for the development of non-invasive markers for oocyte developmental competence, since no correlation was observed either with the ovarian reserve or the oocyte maturation rates. Finally, this study showed that oocyte vitrification per se maintained the developmental potential of human oocytes within a reasonable biological range, clinically comparable to fresh oocytes. As a consequence, we established that the main reason for the reported lower clinical results in vitrified cycles has to be attributed to the loss of oocytes during the warming step. This has important repercussions in the clinical practice, as measures can be easily put in place to offset oocyte loss.
La competencia de desarrollo ovocitaria se define como la capacidad del ovocito para mantener el desarrollo embrionario hasta que el embrión activa su propio genoma. Está determinada por los transcritos (ARN codificantes y no codificantes) acumulados durante la maduración de los ovocitos. La falta de transcripción durante la maduración final de los ovocitos sugiere que la regulación de los genes involucrados en este proceso ocurre a nivel postranscripcional. Entre los posibles mecanismos, el “splicing alternativo” del ARN mensajero, podría estar involucrado. El objetivo principal de esta tesis es explorar nuevas posibilidades para la identificación de biomarcadores de calidad de ovocitos a nivel molecular con el fin de comprender mejor el ovocito y cómo se puede mejorar su competencia de desarrollo. Además, para identificar biomarcadores no invasivos de la competencia de desarrollo de ovocitos, se ha evaluado la expresión de diferentes marcadores de envejecimiento somático en células de cúmulos humanos que rodean los ovocitos, y se ha correlacionado con la edad y la reserva ovárica de las mujeres y con las tasas de maduración de los ovocitos. Finalmente, debido a que muchos de los ovocitos utilizados estaban vitrificados, se ha analizado el efecto de la vitrificación sobre la competencia de desarrollo de los ovocitos comparando los resultados reproductivos de ovocitos frescos y vitrificados del mismo ciclo de estimulación. Los resultados sugieren que los ARNs no codificantes y el splicing alternativo representan un papel importante en el proceso de adquisición de la competencia de desarrollo en ovocitos humanos. Estos resultados pueden proporcionar información valiosa para la búsqueda de marcadores de calidad de ovocitos y para la (re)-interpretación de conjuntos de datos existentes. El estudio de la expresión de marcadores de envejecimiento somático en células de cúmulos humanos no ha mostrado una clara correlación entre los genes analizados y la edad, lo que sugiere que las células del cúmulo de mujeres de edad reproductiva avanzada no presentan el transcriptoma típico de los tejidos envejecidos. Finalmente, este estudio ha demostrado que la vitrificación de ovocitos mantiene per se el potencial de desarrollo de los ovocitos humanos dentro de un rango biológico razonable, clínicamente comparable a los ovocitos frescos.
Los estilos APA, Harvard, Vancouver, ISO, etc.
Más fuentes

Libros sobre el tema "Human reproduction"

1

Rand, Casey. Human reproduction. Oxford: Heinemann Library, 2010.

Buscar texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
2

Schatten, Heide, ed. Human Reproduction. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2017. http://dx.doi.org/10.1002/9781118849613.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
3

World Congress on Human Reproduction (6th 1987 Tokyo, Japan). Human reproduction. Editado por Iizuka R y Semm K. Amsterdam: Excerpta Medica, 1988.

Buscar texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
4

Carlo, Bulletti y Guller Seth, eds. Human reproduction in 2007. Malden, Mass: Blackwell, 2008.

Buscar texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
5

Alberto, Revelli, ed. Biotechnology of human reproduction. Boca Raton: Parthenon Pub. Group, 2002.

Buscar texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
6

Hutchinson, J. S. M. Controlling reproduction. London: Institute of Biology, 1993.

Buscar texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
7

Rousseaux, Sophie y Saadi Khochbin, eds. Epigenetics and Human Reproduction. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-14773-9.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
8

Agarwal, Ashok, Luna Samanta, Ricardo P. Bertolla, Damayanthi Durairajanayagam y Paula Intasqui. Proteomics in Human Reproduction. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-48418-1.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
9

Vaamonde, Diana, Stefan S. du Plessis y Ashok Agarwal, eds. Exercise and Human Reproduction. New York, NY: Springer New York, 2016. http://dx.doi.org/10.1007/978-1-4939-3402-7.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
10

University of Alberta. Institute of Law Research and Reform., ed. Competence and human reproduction. Edmonton, Alta: The Institute, 1989.

Buscar texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
Más fuentes

Capítulos de libros sobre el tema "Human reproduction"

1

Roberts, Jean. "Reproduction". En Mastering Human Biology, 301–35. London: Macmillan Education UK, 1991. http://dx.doi.org/10.1007/978-1-349-11386-6_11.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
2

Setchell, B. P. "Human Reproduction". En Advances in Experimental Medicine and Biology, 1–15. Boston, MA: Springer US, 1997. http://dx.doi.org/10.1007/978-1-4615-5913-9_1.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
3

Dye, Frank J. "Reproduction". En Human Life Before Birth, 49–61. Second edition. | Boca Raton : Taylor & Francis, 2019.: CRC Press, 2019. http://dx.doi.org/10.1201/9781351130288-6.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
4

Simon, Luke, Monis B. Shamsi y Douglas T. Carrell. "Sperm Selection Techniques and their Relevance to ART". En Human Reproduction, 1–43. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2016. http://dx.doi.org/10.1002/9781118849613.ch1.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
5

Schatten, Heide y Qing-Yuan Sun. "Cytoskeletal Functions, Defects, and Dysfunctions Affecting Human Fertilization and Embryo Development". En Human Reproduction, 355–98. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2016. http://dx.doi.org/10.1002/9781118849613.ch10.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
6

Combelles, Catherine M. H. "In VitroMaturation of Human Oocytes: Current Practices and Future Promises". En Human Reproduction, 45–70. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2016. http://dx.doi.org/10.1002/9781118849613.ch2.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
7

Sengupta, Jayasree, G. Anupa, Muzaffer Ahmed Bhat y Debabrata Ghosh. "Molecular Biology of Endometriosis". En Human Reproduction, 71–141. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2016. http://dx.doi.org/10.1002/9781118849613.ch3.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
8

Bukovsky, Antonin. "Novel Immunological Aspects for the Treatment of Age-induced Ovarian and Testicular Infertility, Other Functional Diseases, and Early and Advanced Cancer Immunotherapy". En Human Reproduction, 143–204. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2016. http://dx.doi.org/10.1002/9781118849613.ch4.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
9

Ishii, Tetsuya. "Mitochondrial Manipulation for Infertility Treatment and Disease Prevention". En Human Reproduction, 205–29. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2016. http://dx.doi.org/10.1002/9781118849613.ch5.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
10

Swain, Jason E. "Novel Imaging Techniques to Assess Gametes and Preimplantation Embryos". En Human Reproduction, 231–65. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2016. http://dx.doi.org/10.1002/9781118849613.ch6.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.

Actas de conferencias sobre el tema "Human reproduction"

1

Rudenko, Daria. "Innovative Models Of Human Resources Reproduction". En IV International Scientific Conference "Competitiveness and the development of socio-economic systems" dedicated to the memory of Alexander Tatarkin. European Publisher, 2021. http://dx.doi.org/10.15405/epsbs.2021.04.114.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
2

Vlašković, Veljko. "Pravni značaj biomedicinske usluge čuvanja reproduktivnih ćelija maloletnog lica". En XVI Majsko savetovanje. University of Kragujevac, Faculty of Law, 2020. http://dx.doi.org/10.46793/upk20.451v.

Texto completo
Resumen
Serbian Law on Medically Assisted Reproduction has widened the number of persons who enjoy the right to preserve their reproductive material for postponed reproduction due to threatened infertility. In this context, that right now belongs also to underage person if her/his parents gave the explicit and written consent to harvesting, freezing and banking of their child's reproductive cells. These are the cases when the underage person currently has reproductive capability, but she/ he is threatened by loss of reproductive function in the near future due to developing illness or forthcoming medical treatment. Understandably, the child has no right to postponed usage of residual reproductive cells beyond the cases of threatened infertility, since the underage person does not meet the legal requirements concerning personal and family status necessary for enjoying services of medically assisted reproduction. Frozen reproductive cells of underage persons will be stored without time limits, but the underage person cannot use them for conception before acquisition of legal conditions to enjoy the services of medically assisted reproduction (majority and full legal capacity, conclusion of marriage or establishing cohabitation). Such approach intends to make balance between the interests of an underage person whose gametes are stored and the „the best interets of the prospective child“ who should be conceived and born. Frozen reproductive cells of an underage person cannot be used in any other purpose except postponed homologous reproduction. Although it is not directly mentioned in Law on Medically Assisted Reproduction, reproductive cells may be harvested from an underage persons if she/he does not object to it. Such rule derives from the analogous application to the rule of Law on Human Cells and Tissues that human cell cannot be harvested from a person who has not attained majority if such person objects to it. Parents of the child decide on giving consent to harvesting, freezing and banking of their child's reproductive cells by their mutual agreement, which has the legal significance of the issue that greatly affects the child's life. The absence of consent of one or both parents cannot be replaced by state authority decision. Furthermore, the parents are not allowed to revoke their consent to their child's gamete banking.
Los estilos APA, Harvard, Vancouver, ISO, etc.
3

Vlašković, Veljko. "Pravni značaj biomedicinske usluge čuvanja reproduktivnih ćelija maloletnog lica". En XVI Majsko savetovanje. University of Kragujevac, Faculty of Law, 2020. http://dx.doi.org/10.46793/upk20.451v.

Texto completo
Resumen
Serbian Law on Medically Assisted Reproduction has widened the number of persons who enjoy the right to preserve their reproductive material for postponed reproduction due to threatened infertility. In this context, that right now belongs also to underage person if her/his parents gave the explicit and written consent to harvesting, freezing and banking of their child's reproductive cells. These are the cases when the underage person currently has reproductive capability, but she/ he is threatened by loss of reproductive function in the near future due to developing illness or forthcoming medical treatment. Understandably, the child has no right to postponed usage of residual reproductive cells beyond the cases of threatened infertility, since the underage person does not meet the legal requirements concerning personal and family status necessary for enjoying services of medically assisted reproduction. Frozen reproductive cells of underage persons will be stored without time limits, but the underage person cannot use them for conception before acquisition of legal conditions to enjoy the services of medically assisted reproduction (majority and full legal capacity, conclusion of marriage or establishing cohabitation). Such approach intends to make balance between the interests of an underage person whose gametes are stored and the „the best interets of the prospective child“ who should be conceived and born. Frozen reproductive cells of an underage person cannot be used in any other purpose except postponed homologous reproduction. Although it is not directly mentioned in Law on Medically Assisted Reproduction, reproductive cells may be harvested from an underage persons if she/he does not object to it. Such rule derives from the analogous application to the rule of Law on Human Cells and Tissues that human cell cannot be harvested from a person who has not attained majority if such person objects to it. Parents of the child decide on giving consent to harvesting, freezing and banking of their child's reproductive cells by their mutual agreement, which has the legal significance of the issue that greatly affects the child's life. The absence of consent of one or both parents cannot be replaced by state authority decision. Furthermore, the parents are not allowed to revoke their consent to their child's gamete banking.
Los estilos APA, Harvard, Vancouver, ISO, etc.
4

Nakano, Tomohiro, Koyo Yu y Kouhei Ohnishi. "Human task reproduction with Gaussian mixture models". En 2015 IEEE International Conference on Industrial Technology (ICIT). IEEE, 2015. http://dx.doi.org/10.1109/icit.2015.7125112.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
5

Torrance, J., S. Hutchings, J. E. Bronlund, L. Huang y W. L. Xu. "Human Jaw Motion Measurement, Analysis, and Robotic Reproduction". En 2008 15th International Conference on Mechatronics and Machine Vision in Practice (M2VIP). IEEE, 2008. http://dx.doi.org/10.1109/mmvip.2008.4749549.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
6

Kaspul, Mr. "Poster Exhibition Based Learning on Human Reproduction Concept". En 5th SEA-DR (South East Asia Development Research) International Conference 2017 (SEADRIC 2017). Paris, France: Atlantis Press, 2017. http://dx.doi.org/10.2991/seadric-17.2017.27.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
7

Ohya, Yuri, Takashi Obi, Masahiro Yamaguchi, Nagaaki Ohyama y Yasuhiro Komiya. "Natural color reproduction of human skin for telemedicine". En Medical Imaging '98, editado por Yongmin Kim y Seong K. Mun. SPIE, 1998. http://dx.doi.org/10.1117/12.312499.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
8

Onneweer, B., W. Mugge y A. C. Schouten. "Human force reproduction error depends upon force level". En 2013 World Haptics Conference (WHC 2013). IEEE, 2013. http://dx.doi.org/10.1109/whc.2013.6548479.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
9

Vasiltsova, Lyudmila, Nadezhda Alexandrova, Nataliya Simachkova y Elena Zarubina. "Contradictions of Reproduction of Human Capital in Modern Russia". En Proceedings of the Ecological-Socio-Economic Systems: Models of Competition and Cooperation (ESES 2019). Paris, France: Atlantis Press, 2020. http://dx.doi.org/10.2991/assehr.k.200113.034.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
10

Terskaya, Galina. "A systemic approach to the reproduction of human capital". En Systems Analysis in Economics - 2020. Moscow, "Science" Publishing House, 2021. http://dx.doi.org/10.33278/sae-2020.book1.460-463.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.

Informes sobre el tema "Human reproduction"

1

Arora, Ayaan. Reproduction of 'Sovereignty, Substance, and Public Support for European Courts’ Human Rights Rulings'. Social Science Reproduction Platform, febrero de 2023. http://dx.doi.org/10.48152/ssrp-2ate-8v60.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
2

Sung, Seung Yong. Reproduction of 'Equality of opportunity and human capital accumulation: Motivational effect of a nationwide scholarship in Colombia'. Social Science Reproduction Platform, abril de 2022. http://dx.doi.org/10.48152/ssrp-5t1m-4n04.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
3

John, Jenny. Reproduction of 'Equality of opportunity and human capital accumulation: Motivational effect of a nationwide scholarship in Colombia'. Social Science Reproduction Platform, abril de 2023. http://dx.doi.org/10.48152/ssrp-3zrs-xs56.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
4

Nieves, Isabel, Amanda Glassman y Ingvild Belle. Technical Notes on Reproductive Health. Inter-American Development Bank, enero de 2000. http://dx.doi.org/10.18235/0008874.

Texto completo
Resumen
These publication is a series of 12 Technical Notes on Reproductive Health. The connections between poverty and reproductive ill health are multidimensional. This publication covers reproductive health, human capital development, reproductive health interventions, public health policies and health sector reform as well as a myriad of other topics concerning reproductive health in Latin America and the Caribbean.
Los estilos APA, Harvard, Vancouver, ISO, etc.
5

Askew, Ian, Kaila Clarke, Fauzia Huda, Joyce Mumah y Mary Sebastian. Adapting the WHO tool on sexual and reproductive health and human rights: Experiences in four countries. Population Council, 2013. http://dx.doi.org/10.31899/rh4.1096.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
6

Doblhammer, Gabriele, Joseph L. Rodgers y Roland Rau. Seasonality of birth in nineteenth and twentieth century Austria: steps toward a unified theory of human reproductive seasonality. Rostock: Max Planck Institute for Demographic Research, noviembre de 1999. http://dx.doi.org/10.4054/mpidr-wp-1999-013.

Texto completo
Los estilos APA, Harvard, Vancouver, ISO, etc.
7

Bartolino, Valerio, Lena Bergström, Mårten Erlandsson y Birgit Koehler. Potential future climate change effects on Swedish fish and fisheries. Department of Aquatic Resources, Swedish University of Agricultural Sciences, 2023. http://dx.doi.org/10.54612/a.69d4ds9ph6.

Texto completo
Resumen
Oceans have been warming at an unprecedented rate over the last few decades and climate change is having profound effects on biodiversity and other ecosystem services that oceans provide for human well-being. The motivation for this report is a strong need to understand the consequences of climate change on aquatic ecosystems to develop strategies to minimize the impact on fished species, fisheries and society. The introduction and first chapters of the report are based on a literature review, which summarizes the current state of knowledge about climate change in the Swedish marine and coastal areas, patterns emerging from the main climate scenarios, and potential effects on fish and fisheries. This is followed by an analysis of species environmental limits and tolerances to a warming environment, focusing on selected fish and invertebrate species of commercial relevance. Thermal safety margins show a smaller buffer for species of boreal origin including the northern shrimp, the gadoids and vendace, among others. Analyses of preferred spawning temperatures and depths enable a preliminary overview of the potential sensitivities of species to a warming environment, showing inter alia that species requiring shallow and cold waters for reproduction are likely more sensitive to the effect of warming. The report also includes a specific analysis of how changes in temperature, salinity and oxygen may affect the availability of suitable spawning and nursery habitats in the Baltic Sea. Using information from recently updated maps of potential spawning and recruitment areas in the Baltic Sea, the potential loss of reproductive grounds is evaluated in an ensemble analysis based on multiple climate scenarios. Finally, the report includes a climate risk analysis, which integrates information on the stocks' specific susceptibilities to climate change (hazard), with information on the vulnerabilities of the evaluated systems and their exposure to climate change. The integration is carried out at the level of different fishing segments (fleets) and at the level of the different coastal administrative regions in Sweden. Thus, the risk analysis aims to identify the relative distribution of climate risk among fishing fleets and geographical regions, and explores how this may develop under alternative climate scenarios. The results show that the risk ranks higher for the salmon, vendace and shrimp fisheries, while geographically, the northern Baltic Sea ranks higher in risk compared to other regions. Most importantly, the analyses show that the risk is not equally driven by hazard, vulnerability and exposure for the different fleets and regions, suggesting that no single risk-reducing approach is sufficient and appropriate across all areas and fleets. The report concludes with a gap analysis together with suggestions for next steps to improve the state of knowledge and enable more precise risk analyses in the future, as well as with summary conclusions.
Los estilos APA, Harvard, Vancouver, ISO, etc.
8

Li, Yanhui. Efficacy of non-invasive photodynamic therapy for female lower reproductive tract diseases associated with HPV infection: a comprehensive meta-analysis. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, noviembre de 2022. http://dx.doi.org/10.37766/inplasy2022.11.0092.

Texto completo
Resumen
Review question / Objective: The critical point of this study was to comprehensively evaluate the curative effect of Photodynamic therapy (PDT) in diseases of female lower reproductive tract associated with the human papillomavirus (HPV) infection. Condition being studied: Traditional clinical recommendations for treating diseases of the female lower reproductive tract include topical therapy with drugs, surgery, intravaginal radiation, carbon dioxide (CO2) laser, etc. Although medication is easy to administer, it has a high recurrence rate and adverse effects such as burning sensation, pain, and dyspareunia. The other traditional treatment method is usually invasive, repeated operation of vaginal perforation, scar, easy recurrence, fertility decline, and other shortcomings. At present, the treatment strategy for cervical squamous intraepithelial lesion, vaginal squamous intraepithelial lesion, condyloma acuminatum, and vulvar lichen sclerosis are to protect the normal organ structure and function as much as possible, reduce recurrence, prevent disease progression and carcinogenesis, and preserve female reproductive function.
Los estilos APA, Harvard, Vancouver, ISO, etc.
9

Cárdenas Quintero, Alba Patricia. Desarrollo de competencias en derechos humanos sexuales y reproductivos. Ediciones Universidad Cooperativa de Colombia, julio de 2023. http://dx.doi.org/10.16925/gcgp.98.

Texto completo
Resumen
Esta guía está concebida para que los estudiantes en escenarios de práctica educativa aborden con los estudiantes en la etapa de la adolescencia temas de derechos humanos sexuales y reproductivos a través de una construcción individual de conocimientos, habilidades, valores y actitudes que fortalezcan a lo largo de su trayectoria escolar su proyecto de vida. Para la Unesco, la educación integral en sexualidad es indispensable para la salud y el bienestar. Una educación en sexualidad de calidad incluye una educación sobre los derechos humanos, la sexualidad humana, la igualdad de género, la pubertad, las relaciones sexuales y la salud reproductiva y concibe la importancia de formar niños y niñas desde temprana edad sobre su propia sexualidad para que ponga en práctica dichas competencias a lo largo de sus vidas; lo cual significa que en la forma que enfocamos sus actuaciones, les servirá de reflexión permanente que se conservará es sus relaciones sociales futuras. Aquí es importante enseñar sobre el concepto y la aplicación de las relaciones sociales y lo que en ello se deriva como es el noviazgo, la pareja y su rol, para que el adolescente se forme como una persona que vaya adaptándose a las realidades sociales cumpliendo su rol dentro de una familia, una pareja, como género concediéndole la oportunidad de descubrir sus habilidades e intereses que lo enfoquen a tomar las mejores decisiones en la construcción de su vida futura.
Los estilos APA, Harvard, Vancouver, ISO, etc.
10

Delwiche, Michael, Boaz Zion, Robert BonDurant, Judith Rishpon, Ephraim Maltz y Miriam Rosenberg. Biosensors for On-Line Measurement of Reproductive Hormones and Milk Proteins to Improve Dairy Herd Management. United States Department of Agriculture, febrero de 2001. http://dx.doi.org/10.32747/2001.7573998.bard.

Texto completo
Resumen
The original objectives of this research project were to: (1) develop immunoassays, photometric sensors, and electrochemical sensors for real-time measurement of progesterone and estradiol in milk, (2) develop biosensors for measurement of caseins in milk, and (3) integrate and adapt these sensor technologies to create an automated electronic sensing system for operation in dairy parlors during milking. The overall direction of research was not changed, although the work was expanded to include other milk components such as urea and lactose. A second generation biosensor for on-line measurement of bovine progesterone was designed and tested. Anti-progesterone antibody was coated on small disks of nitrocellulose membrane, which were inserted in the reaction chamber prior to testing, and a real-time assay was developed. The biosensor was designed using micropumps and valves under computer control, and assayed fluid volumes on the order of 1 ml. An automated sampler was designed to draw a test volume of milk from the long milk tube using a 4-way pinch valve. The system could execute a measurement cycle in about 10 min. Progesterone could be measured at concentrations low enough to distinguish luteal-phase from follicular-phase cows. The potential of the sensor to detect actual ovulatory events was compared with standard methods of estrus detection, including human observation and an activity monitor. The biosensor correctly identified all ovulatory events during its testperiod, but the variability at low progesterone concentrations triggered some false positives. Direct on-line measurement and intelligent interpretation of reproductive hormone profiles offers the potential for substantial improvement in reproductive management. A simple potentiometric method for measurement of milk protein was developed and tested. The method was based on the fact that proteins bind iodine. When proteins are added to a solution of the redox couple iodine/iodide (I-I2), the concentration of free iodine is changed and, as a consequence, the potential between two electrodes immersed in the solution is changed. The method worked well with analytical casein solutions and accurately measured concentrations of analytical caseins added to fresh milk. When tested with actual milk samples, the correlation between the sensor readings and the reference lab results (of both total proteins and casein content) was inferior to that of analytical casein. A number of different technologies were explored for the analysis of milk urea, and a manometric technique was selected for the final design. In the new sensor, urea in the sample was hydrolyzed to ammonium and carbonate by the enzyme urease, and subsequent shaking of the sample with citric acid in a sealed cell allowed urea to be estimated as a change in partial pressure of carbon dioxide. The pressure change in the cell was measured with a miniature piezoresistive pressure sensor, and effects of background dissolved gases and vapor pressures were corrected for by repeating the measurement of pressure developed in the sample without the addition of urease. Results were accurate in the physiological range of milk, the assay was faster than the typical milking period, and no toxic reagents were required. A sampling device was designed and built to passively draw milk from the long milk tube in the parlor. An electrochemical sensor for lactose was developed starting with a three-cascaded-enzyme sensor, evolving into two enzymes and CO2[Fe (CN)6] as a mediator, and then into a microflow injection system using poly-osmium modified screen-printed electrodes. The sensor was designed to serve multiple milking positions, using a manifold valve, a sampling valve, and two pumps. Disposable screen-printed electrodes with enzymatic membranes were used. The sensor was optimized for electrode coating components, flow rate, pH, and sample size, and the results correlated well (r2= 0.967) with known lactose concentrations.
Los estilos APA, Harvard, Vancouver, ISO, etc.
Ofrecemos descuentos en todos los planes premium para autores cuyas obras están incluidas en selecciones literarias temáticas. ¡Contáctenos para obtener un código promocional único!

Pasar a la bibliografía