Search results for "TUBES"
showing 10 items of 424 documents
Evaluation of the antibacterial power and biocompatibility of zinc oxide nanorods decorated graphene nanoplatelets: New perspectives for antibiodeter…
2017
Background Nanotechnologies are currently revolutionizing the world around us, improving the quality of our lives thanks to a multitude of applications in several areas including the environmental preservation, with the biodeterioration phenomenon representing one of the major concerns. Results In this study, an innovative nanomaterial consisting of graphene nanoplatelets decorated by zinc oxide nanorods (ZNGs) was tested for the ability to inhibit two different pathogens belonging to bacterial genera frequently associated with nosocomial infections as well as biodeterioration phenomenon: the Gram-positive Staphylococcus aureus and the Gram-negative Pseudomonas aeruginosa. A time- and dose-…
Hydrothermal Aging of an Epoxy Resin Filled with Carbon Nanofillers
2020
The effects of temperature and moisture on flexural and thermomechanical properties of neat and filled epoxy with both multiwall carbon nanotubes (CNT), carbon nanofibers (CNF), and their hybrid components were investigated. Two regimes of environmental aging were applied: Water absorption at 70 °
Acoustic monitoring of the artificial airway — experimental results
1997
Non-invasive acoustic airway-monitoring was evaluated in an experimental study. Recording amplitude and travel time of acoustic pulse response, an acoustic pattern of airway's geometry was then calculated. Measurements on models and excised human cadaver lungs were performed to discover whether displacement or obstruction of the artificial airway could be detected by its acoustic equivalent. Regression analysis revealed a close correlation between displacement of tracheostomy tubes and the shifting of the acoustic area-distance function (corr. coeff.: 0.97-1) and an adequate correlation between acoustic and planimetrical determination of cross-sectional area within the tubes (corr. coeff.: …
ROUTINARY USE OF FIBRIN SEALANTS TO PREVENT PROLONGED AIR LEAK IN THORACIC SURGERT: OUR EXPERIENCE
2019
Introduction: prolonged air leak (PAL) is one of the most common postoperative complications after lung surgery. It is associatred with increased significant morbidity, lower quality of life, longer hospital stay and higher hospital costs. Since its great clinical and economic burden, it is important to establish the feasibility and the effectiveness of the routinary preventive use of a fibrin sealant in order to reduce the incidence of prolonged air leaks. Patients and methods: this is a randomized study on 189 adult patients - 118 men (62,4%) and 71 women (37,6%) aged from 39 to 87 y.o. (mean age 68,3 y.o.) - who underwent lung surgery (lobectomy or bilobectomy) with intraoperatory detect…
Initial experience of a new linear everting falloposcopy system in comparison with hysterosalpingography
1993
Objective To assess the endolumenal portion of the fallopian tube from ostium to fimbria using a specially designed linear everting catheter and microendoscope. The study compared falloposcopy results with those obtained with hysterosalpingography (HSG) in the same patients and explored the system's ability to classify internal tubal conditions. Design A prospective study of a new diagnostic technique, falloposcopy, versus conventional means of evaluating tubal status. Setting A tertiary university infertility center. Patients Eighteen infertile patients with a previous history of infertility of at least 2 years duration. Intervention Diagnostic falloposcopy was performed on a total of 31 t…
Management of Pneumothoraces Detected on Chest Computed Tomography: Can Anatomical Location Identify Patients Who Can Be Managed Expectantly?
2014
Abstract Background Pneumothorax (PTX) can be readily detected by computed tomography (CT) or ultrasound. However, management of PTX in hemodynamically stable patients remains controversial. Study Objectives We sought to investigate whether a distinct anatomical distribution of PTX along prespecified chest zones as detected by CT can be described in patients with or without subsequent chest tube thoracotomy (CTT), thus potentially allowing the extended focused assessment with sonography for trauma (EFAST) ultrasound examination to guide PTX management. Methods We performed a retrospective review of chest CT scans performed in the emergency department (ED) of a Level I trauma center. CT scan…
Diagnosis and Classification of 17 Diseases from 1404 Subjects via Pattern Analysis of Exhaled Molecules.
2016
We report on an artificially intelligent nanoarray based on molecularly modified gold nanoparticles and a random network of single-walled carbon nanotubes for noninvasive diagnosis and classification of a number of diseases from exhaled breath. The performance of this artificially intelligent nanoarray was clinically assessed on breath samples collected from 1404 subjects having one of 17 different disease conditions included in the study or having no evidence of any disease (healthy controls). Blind experiments showed that 86% accuracy could be achieved with the artificially intelligent nanoarray, allowing both detection and discrimination between the different disease conditions examined.…
Halloysite/Keratin Nanocomposite for Human Hair Photoprotection Coating
2020
We propose a novel keratin treatment of human hair by its aqueous mixtures with natural halloysite clay nanotubes. The loaded clay nanotubes together with free keratin produce micrometer-thick protective coating on hair. First, colloidal and structural properties of halloysite/keratin dispersions and the nanotube loaded with this protein were investigated. Above the keratin isoelectric point (pH = 4), the protein adsorption into the positive halloysite lumen is favored because of the electrostatic attractions. The ζ-potential magnitude of these core-shell particles increased from -35 (in pristine form) to -43 mV allowing for an enhanced colloidal stability (15 h at pH = 6). This keratin-cla…
Surgical outcomes of diaphragmatic resection during cytoreductive surgery for advanced gynecological ovarian neoplasia: A randomized single center cl…
2022
Introduction: Ovarian cancer (OC) represent nearly 4% of gynecologic malignancies and it is often diagnosed at advanced stage. Diaphragmatic surgery, a fundamental step of advanced stage ovarian cancer (ASOC) debulking surgery, is associated with a high post-operative complication incidence, which is supposedly reduced with thoracostomy tube placement. We assessed the role of intra-operative thoracostomy tube placement, as a prevention measure for post-operative complications, after diaphragmatic resection. Methods: This was a single center prospective randomized trial. Ovarian cancer patients, who underwent mono-lateral diaphragmatic resection, were randomized 1:1 into two arms. Arm A incl…
Laparoscopic management of interstitial pregnancy: the "purse-string" technique
2012
We report five cases of interstitial pregnancy, treated between 2004 and 2010, to evaluate surgical and obstetric outcome of laparoscopic cornual resection with a "purse-string" technique. A hemostatic suture was passed at the base of the mass in a purse-string fashion prior to resection, to minimize intraoperative blood loss. Subsequent pregnancies were analysed, with a mean follow-up time of 48 months. The mean operating time was 39 min and mean blood loss 47 mL. Three of four patients who desired children delivered at term uneventfully. Laparoscopic cornual resection with a "purse-string" technique appears to be useful for treatment of early interstitial pregnancy. The technique ensures …