Search results for " OS"
showing 10 items of 2643 documents
First report of Melittobia australica Girault in Europe and new record of M. acasta (Walker) for Italy
2012
Melittobia acasta and M. australica are newly recorded from Sicily, Italy, and the second species is reported in Europe for the first time. A short historical background about Melittobia parasitoid wasps, their hosts, and distribution, with emphasis in those two species is presented together with illustrations to facilitate their identification. Brief discussion about the presence and possible distribution of the species in Sicily is also included.
Reservoir characteristics of Mainz pouch studied in animal model
1993
In a canine model of the Mainz pouch, intracavitary pressure and compliance were measured during instillation of isosmotic and hyperosmotic (900 mmol/kg water) solutions of saline. Wall properties of small- and large-bowel segments of the pouch were assessed individually by sonomicrometry. Intraluminal pressures increased more steeply during filling with hyperosmotic solution, resulting in reduced distensibility of small- and large-bowel segments. Additionally, instillation of the hyperosmotic solution resulted in increased amplitudes and frequency of intracavitary pressure waves. The results indicate that this was the result of a combination of intensified bowel contractions and an increas…
Coralline algal growth-increment widths archive North Atlantic climate variability
2011
Over the past decade coralline algae have increasingly been used as archives of paleoclimate information. Encrusting coralline algae, which deposit annual growth increments in a high Mg-calcite skeleton, are amongst the longest-lived shallow marine organisms. In fact, a live-collected plant has recently been shown to have lived for at least 850 years based on radiometric dating. While a number of investigations have successfully used geochemical information of coralline algal skeletons to reconstruct sea surface temperatures, less attention has been paid to employ growth increment widths as a temperature proxy. Here we explore the relationship between growth and environmental parameters in …
The microstructural variability of the intercentra among temnospondyl amphibians
2014
The histology of the vertebral centrum of the morphologically diverse Temnospondyli is poorly known. In this study, the variability of the histological framework of various taxa from several Permian and Triassic localities was investigated for the first time. Twelve intercentra, forming the anterior part of the diplospondylous centra of temnospondyls, were examined histologically. The intercentra of all studied taxa share a highly vascularized cortex on the ventro-lateral side and primary and secondary trabecular, endochondral bone on the dorsal side. A high variability is present, among others, within the arrangement of the vascular cavities, the density of the trabeculae and the distribut…
El prolapso genital como factor de riesgo de fractura osteoporótica en la mujer
2022
El estudio consiste en analizar la correlación existente entre el prolapso genital y la fractura osteoporótica, ambas patología de alta prevalencia en la mujer envejecida. Ya existen indicios biblliográficos (en estudios de datos poblacionales) de esta posible asociación, pero siempre de manera retrospectiva y nunca buscando esta asociación como objetivo principal, con los sesgos inherentes a cada perfil de estudio. Proponemos un estudio analítico, observacional y prospectivo con el fin de demostrar nuestra hipótesis principal; que el propaso de órganos pélvicos es un factor de riesgo independiente para fractura osteoporótica. Como objetivo secundario, intentaremos demostrar que existen mar…
Harmonic balance analysis of pull-in range and oscillatory behavior of third-order type 2 analog PLLs
2020
The most important design parameters of each phase-locked loop (PLL) are the local and global stability properties, and the pull-in range. To extend the pull-in range, engineers often use type 2 PLLs. However, the engineering design relies on approximations which prevent a full exploitation of the benefits of type 2 PLLs. Using an exact mathematical model and relying on a rigorous mathematical thinking this problem is revisited here and the stability and pull-in properties of the third-order type 2 analog PLLs are determined. Both the local and global stability conditions are derived. As a new idea, the harmonic balance method is used to derive the global stability conditions. That approach…
Bisfosfonati: utilità terapeutiche e reazioni avverse di interesse odontostomatologico
2020
I bifosfonati hanno la capacità di modulare il turnover osseo, controllare e ridurre il rimodellamento in corso di riassorbimento.Il loro meccanismo d’azione si basa sulla capacità di inibire il riassorbimento osseo mediato dagli osteoclasti.
Significance of immunohistochemistry biomarkers in prediction of malignant transformation of oral lichen planus
2022
Background: Oral lichen planus (OLP) is a chronic inflammatory disorder with increased risk for malignant transformation. Biomarker validation is a pivotal step in moving newly discovered biomarkers towards clinical implementation. We performed a systematic review of studies on biomarkers related to OLP, wherein biomarkers have been described in at least two independent studies. Our aim was to determine whether any of these biomark-ers might be promising in predicting the increased risk of malignant transformation of OLP. Material and Methods: We searched the following databases until August 2021: PUBMED, EMBASE, and Web of Science. Due to high heterogeneity, a qualitative rather than quant…
Medication-Related Osteonecrosis of Jaws (MRONJ) Prevention and Diagnosis: Italian Consensus Update 2020
2020
The Medication-Related Osteonecrosis of Jaws (MRONJ) diagnosis process and its prevention play a role of great and rising importance, not only on the Quality of Life (QoL) of patients, but also on the decision-making process by the majority of dentists and oral surgeons involved in MRONJ prevention (primary and secondary). The present paper reports the update of the conclusions from the Consensus Conference—held at the Symposium of the Italian Society of Oral Pathology and Medicine (SIPMO) (20 October 2018, Ancona, Italy)—after the newest recommendations (2020) on MRONJ were published by two scientific societies (Italian Societies of Maxillofacial Surgery and Oral Pathology and Medicine, SI…
Kaulu smadzenu mononukleāro šūnu daudzumuun kvalitātiietekmējošie faktori cela locītavas osteoartrīta pacientiem
2020
Osteoartrīts ir visizplatītākā locītavu slimība ar ievērojamām ekonomiskām izmaksām un pieaugošu izplatību (Conaghan et al. 2014). Viena no galvenajām problēmām ir tā, ka nav nekādas ārstēšanas, izņemot locītavas aizvietošanu, kas var izārstēt osteoartrītu, tāpēc ir svarīgi izpētīt alternatīvas ārstēšanas metodes, piemēram, cilmes šūnu terapiju. Interese par mononukleāro šūnu izpēti kā ārstēšanas metodi ir plaši pieaugusi, bet vēl tikai nedaudz ir zināms par optimālo ievadīto mononukleāro šūnu daudzumu un par to, kāpēc mononukleāro un mezenhimālo cilmes šūnu daudzums un kvalitāte cilvēkiem ir atšķirīga. Pētījuma mērķis ir noskaidrot, vai starp pacientu faktoriem, piemēram, vecumu, dzimumu, …