84 research outputs found
Direct P-Wave Seismic Noise Interferometry for Groundwater Monitoring: A Modelling Study
No full textIn this study, we monitor the depth variation of an unconfined aquifer by applying seismic noise interferometry to synthetic data modelled with a 2D finite-difference software. We consider two models with the same subsurface geological structure, but with different water table levels representing two monitoring periods. The receivers are placed at the topographic surface and collect the seismic signals generated by a source located at the bottom of the aquifer to simulate a pumping system. First, cross-correlation of seismic traces with a reference one is used to produce interferograms (i.e., virtual surveys) for both the tested models. Then, direct P-wave arrivals identified in the two interferograms are compared through the stretching technique in order to estimate the relative velocity changes (dv/v). Finally, the estimated dv/v values are related to theoretical ones obtained using a reference subsurface model to produce the water level depth in the considered monitoring period.Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Applied Geophysics and Petrophysic
Uterine transplantation and IVF for congenital or acquired uterine factor infertility: A systematic review of safety and efficacy outcomes in the first 52 recipients.
No full textUterine transplantation (UTx) associated with IVF restores fertility in women affected by absolute uterine factor infertility (AUFI). Pregnancies achieved both in women undergoing any solid organ transplantation and following IVF are associated with an increased risk of maternal and neonatal complications. This systematic review evaluated this risk in UTx-IVF treated women focusing on the safety and efficacy features of the treatment. Twenty-two studies and three press releases reporting on 52 UTx-IVF treatments were identified. Regarding the safety of treatment, 38/52 (73,1%) of surgical procedures led to the restoration of uterine function in recipients, 12/52 (23,1%) of recipients experienced post-operative complications requiring hysterectomy, and 2/52 (3,8%) of procedures failed before uterine recipients' surgery due to intra-operative complications. Regarding the efficacy of treatment, results focused on transplanted patients showing full recovery of organ functioning: 16/38 (42,1%) of patients achieved a pregnancy, including two women who gave births twice. UTx-IVF pregnancies led to 16 deliveries and all new-borns were healthy. Six out of 16 (37,5%) UTx pregnancies faced major complications during gestation. Preterm births occurred in 10/16 (62,5%) UTx deliveries. Our data indicates that the risk of gestational and delivery complications deserves important consideration in AUFI women receiving UTx-IVF treatments. However, these observations are preliminary and need to be revised after larger series of data are published
Strictly join irreducible varieties of BL-algebras: The missing pieces
No full textBasic Logic BL, introduced by P. Hájek in 1998, is the logic of all continuous t-norms and their residua. The variety of BL-algebras forms the algebraic semantics of BL. Let L be a variety of BL-algebras, and let L(L) be its lattice of subvarieties, ordered by inclusion. L is called strictly join irreducible (SJI) if, whenever L is the join of a set S of varieties of BL-algebras, then L∈S. Every variety in L(L) is obtained as join of SJI varieties, which may be considered as the building blocks of all the varieties in L(L). In a previous work by the second author, a partial classification for the SJI varieties of BL-algebras has been found. In this paper we provide a full classification of the SJI varieties of BL-algebras. Our main result is that a variety of BL-algebras is SJI iff it is generated by a BL-chain with finitely many components, each of them being a cancellative hoop or a Wajsberg hoop with finite rank. As an application, we provide a characterization for the varieties of BL-algebras having only finitely many subvarieties, and we study some additional topics
Spontaneous pregnancies among infertile couples during assisted reproduction lockdown for COVID-19 pandemic
No full textThe worldwide spread of the SARS-CoV-2 infection has profoundly affected all aspects of human life, with tangible consequences in several contexts, including reproduction. However, evidences on the inter-relation between psychological distress and reproductive medicine are still conflicting
Diffuse large B-cell lymphoma occurring in an ovarian cystic teratoma: Expanding the spectrum of large B-cell lymphoma associated with chronic inflammation
No full textDiffuse large B-cell lymphoma occurring in an ovarian cystic teratoma: expanding the spectrum of large B-cell lymphoma associated with chronic inflammation
Cellular angiofibroma in women: A review of the literature
No full textCellular Angiofibroma (CA) represents a quite recently described mesenchymal tumour that occurs in both genders, in particular in the vulvo-vaginal region in women and in the inguino-scrotal area in men. The first description of this tumour dates from Nucci et al. article in 1997; since then, the literature reports different reviews and case report of this tumour in both genders, but no article specifically addressing CA treatment and follow-up in women. In this review we collected all 79 published female CA cases, analyzing the clinical, pathological and immunohistochemical features of the tumour. CA affects women mostly during the fifth decade of life, it is generally a small and asymptomatic mass that mainly arises in the vulvo-vaginal region, although there are reported pelvic and extra-pelvic cases. The treatment requires a simple local excision due to an extremely low ability to recurrent locally and no chance to metastasize. Throughout the immunohistochemical and pathological findings it is also easily possible a differential diagnosis from the other soft tissue tumours which affect the vulvo-vaginal area, such as spindle cell lipoma, solitary fibrous tumour, angiomyofibroblastoma and aggressive angiomyxoma
Free weak nilpotent minimum algebras
No full textWe give a combinatorial description of the finitely generated free weak nilpotent minimum algebras and provide explicit constructions of normal forms.© 2016, Springer-Verlag Berlin Heidelberg.The second author is supported by the FWF Austrian Science Fund (Parameterized Compilation, P26200). The third author is supported by a Marie Curie INdAM-COFUND Outgoing Fellowship.Peer Reviewe
Coxalgia? Call the gynecologist
No full textCellular angiofibroma is a rare mesenchymal tumor that usually affects the vulvar region. It is commonly asymptomatic and treated with radical excision. We describe the first case of cellular angiofibroma located in the retroperitoneum presenting with coxalgia and laparoscopically treated. At the 6-month follow-up, the patient was coxalgia and disease free. Coxalgia is an unusual symptom for gynecologists; nevertheless, it is possible that several neoplasms may originate in the female pelvis, so any symptom requires careful evaluation. The laparoscopic approach may be effective in removing cellular angiofibroma, avoiding injuries to surrounding structures and unesthetic scarring and leading to a faster recovery
RETRACTED: Correlations between parameters of glycaemic variability and foetal growth, neonatal hypoglycaemia and hyperbilirubinemia in women with gestational diabetes.
No full textThe diagnosis of gestational diabetes mellitus (GDM) is important to prevent maternal and neonatal complications. This study aimed to investigate the feasibility of parameters of glycaemic variability to predict neonatal complications in women with GDM. A retrospective study was conducted on pregnant women tested positive at the oral glucose tolerance test (OGTT) during 16-18 or 24-28 weeks of gestation. Glycaemic measures were extracted from patients' glucometers and expanded to obtain parameters of glycaemic variability. Data on pregnancy outcomes were obtained from clinical folders. Descriptive group-level analysis was used to assess trends in glycaemic measures and foetal outcomes. Twelve patients were included and analysed, accounting for 111 weeks of observations. The analysis of trends in parameters of glycaemic variability showed spikes of glycaemic mean, high blood glucose index and J-index at 30-31 weeks of gestation for cases with foetal macrosomia, defined as foetal growth >90° percentile, neonatal hypoglycaemia and hyperbilirubinemia. Specific trends in parameters of glycaemic variability observed at third trimester correlate with foetal outcomes. Further research is awaited to provide evidence that monitoring of glycaemic variability trends could be more clinically informative and useful than standard glycaemic checks to manage women with GDM at delivery
Impact of the Food and Drug Administration Safety Communication on the Use of Power Morcellator in Daily Clinical Practice: An Italian Survey
No full textStudy Objective: To assess the impact of the Food and Drug Administration (FDA) warning about power morcellation use on the daily clinical practice of Italian gynecologists. Design: Electronic survey mailed to the main gynecologic centers (Canadian Task Force Classification type III). Setting: Unit of Obstetrics and Gynecology, IRCCS - Arcispedale S. Maria Nuova di Reggio Emilia (Italy). Patients: The study did not include patient data. Intervention: There was no intervention. Measurements and Main Results: From 490 surveys sent out, 426 replies were included in the final analysis (return rate = 86.9%). Four hundred of the 426 (93.9%) gynecologists were aware of the FDA warning. One hundred fifty of 302 (49.7%) of experienced gynecologists and 176 of 349 (50.4%) of oncology gynecologists considered laparoscopy the best approach for myomectomy. The FDA communication was considered overly restrictive by experienced and oncology gynecologists who declared that they had no intention of changing their surgical approach. Two hundred fifty of the 426 (58.7%) gynecologists declared that they would change their surgical approach only to prevent legal litigation. Conclusion: The FDA warning also affected Italian gynecologists. Particularly, less experienced gynecologists and those without oncologic practice seem to be more interested in avoiding legal litigation rather than a real clinical risk of upstaging an unexpected leiomyosarcoma. Fear of undiagnosed sarcoma could increase the number of laparotomies
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