Results 191 to 200 of about 46,526 (241)

Fish Scales: A Multifunctional Biomaterial from Nature

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Fish scales demonstrate nature's solution to impact protection through overlapping multilayered architecture. This biological design combines mineralized surfaces with collagen networks to achieve both flexibility and fracture resistance. The structural principles inspire advanced protective materials and biomedical implants, where damage tolerance ...
Liyao Dong, Xiaojie Sun, Xiguang Chen
wiley   +1 more source

Solar Fuels Via Methane Valorization: Thermochemical Pathways, Unified Metrics, and Techno‐Economic Perspectives

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
A first‐of‐its‐kind review benchmarks three solar methane valorization pathways with unified performance metrics for clean fuel production. Meeting global climate targets and sustainable energy demands requires carbon‐neutral fuels and innovative conversion pathways.
Muhammad Abdulmoez, Amjad Othman, Majid Linjawi, Amro Al‐Qutub   +3 more
wiley   +1 more source

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Failure of fertilization in in vitro fertilization: The ?Occult? male factor

Journal of in Vitro Fertilization and Embryo Transfer: IVF, 1988
Failure of fertilization in patients undergoing in vitro fertilization (IVF) deserves extensive analysis for better prediction of the success or failure of this therapeutic modality. Consequently, we retrospectively studied the 52 couples in whom fertilization failed during Norfolk series 18 to 25, in an effort to establish the precise causes of ...
Sérgio Oehninger, Anibal A Acosta, T Kruger   +2 more
exaly   +3 more sources

Intracytoplasmic sperm injection overcomes previous fertilization failure with conventional in vitro fertilization

Fertility and Sterility, 1999
To evaluate the outcome of intracytoplasmic sperm injection (ICSI) in patients with previous idiopathic fertilization failure (< or =20% fertilization rate) after conventional IVF.Retrospective analysis.IVF program at a university medical center.Twenty-five patients who underwent 38 ICSI cycles after experiencing unexplained fertilization failure with ...
Claudio A Benadiva, John Nulsen, Donald Maier   +2 more
exaly   +3 more sources

An evaluation of couples with failure of fertilization in vitro

Human Reproduction, 1992
Attempts at in-vitro fertilization (IVF) may be used as a method of evaluating whether in a given couple, the inability of the sperm to fertilize the oocyte may be the cause of infertility. We evaluated all IVF patients in our practice who had at least one cycle with no fertilization to determine how often this was an isolated event or was repeated in ...
T E, Coates, J H, Check, J, Choe, K, Nowroozi, D, Lurie, C, Callan   +5 more
openaire   +2 more sources

Implantation failure following in-vitro fertilization

Current Opinion in Obstetrics & Gynecology, 2006
Embryo implantation remains the rate-limiting step in assisted conception programmes. Factors affecting the interactions between blastocyst and endometrium are subjects of current research and, sadly, have also been the subjects of much confusion.
Bolarinde, Ola, Tin-Chiu, Li
openaire   +2 more sources

Chromosome investigation in in vitro fertilization failure

Journal of Assisted Reproduction and Genetics, 1994
A chromosomal complement of 227 human oocytes was studied to provide information on the frequency and type of chromosomal abnormalities in oocytes failing in vitro fertilization.Normal haploid chromosome complement was found in 54.6%; chromosomal abnormalities consisting of diploid sets were identified in 16.7% and aneuploidy was observed in 26 ...
S, Ma, D K, Kalousek, B H, Yuen, V, Gomel, S, Katagiri, Y S, Moon   +5 more
openaire   +2 more sources

Antisperm antibodies and in vitro fertilization failure

Journal of In Vitro Fertilization and Embryo Transfer, 1985
A new enzyme-linked immunosorbent assay (ELISA)-based test (Zer, Jerusalem) has allowed us to show the presence of antisperm antibodies (1:32 to 1:64) in the blood of 14 (33%) of 32 patients undergoing in vitro fertilization and embryo transfer (IVF-ET) under gonadotropin stimulation.
T, Pexieder, E, Boillat, P, Janecek
openaire   +2 more sources

Complete Fertilization Failure in ICSI

Human Cell, 2008
Fertilization failure is one of the causes of infertility that becomes evident only after in vitro fertilization (IVF) and intracytoplasmic sperm injection (ICSI) have been attempted. Although the frequency of incidence of fertilization failure is low, if fertilization failure is encountered, medical treatment is usually stopped and serious ...
openaire   +2 more sources

Total Fertilization Failure: A Single Center Analysis

Reproductive Sciences, 2023
Our main objective was to identify the male and female parameters associated with total fertilization failure (TFF) in IVF with nonmasculine indications. The present work, IRB equivalent INS 63209, is a case-control study that evaluated all cases with TFF after conventional IVF at the Center for Human Reproduction from January 2010 to December 2019 (n =
Lisiane Knob de Souza, João Paulo Duarte Witusk, Bruna Campos Galgaro, Luíza da Silva Rodrigues, João Sabino Lahorgue da Cunha-Filho   +4 more
openaire   +2 more sources