We derive an exact formula for the corner free-energy contribution of weakly anisotropic two-dimensional critical systems in the Ising universality class on rectangular domains, expressed in terms of quantities that specify the anisotropic fluctuations. The resulting expression agrees with numerical exact calculations that we perform for the anisotropic triangular Ising model and quantifies the nonuniversality of the corner term for anisotropic critical two-dimensional systems. Our generic formula is expected to apply also to other weakly-anisotropic critical two-dimensional systems that allow for a conformal field theory description in the isotropic limit.
View Article and Find Full Text PDFIn conventional site percolation, all lattice sites are occupied with the same probability. For a bipartite lattice, sublattice-selective percolation instead involves two independent occupation probabilities, depending on the sublattice to which a given site belongs. Here, we determine the corresponding phase diagram for the two-dimensional square and Lieb lattices from quantifying the parameter regime where a percolating cluster persists for sublattice-selective percolation.
View Article and Find Full Text PDFBackground: Traditionally, curettage has been the most widely performed surgical intervention for removing retained products of conception. However, hysteroscopic removal is increasingly performed as an alternative because of the potentially lower risk of intrauterine adhesions and higher rates of complete removal. Until recently, studies comparing curettage with hysteroscopic removal regarding reproductive and obstetrical outcomes were limited, and data conflicting.
View Article and Find Full Text PDFEur J Obstet Gynecol Reprod Biol
May 2024
Objective: The aim of this follow-up study is to compare a manually driven hysteroscopic tissue removal system (Resectr 9 Fr) with a motor driven system (Truclear) in terms of long-term clinical outcomes such as abnormal uterine bleeding and polyp recurrence.
Study Design: This is a follow-up of a multicenter randomized controlled trial comparing a manually and motor driven hysteroscopic tissue removal system for polypectomy. This prospective cohort study was performed at Ghent University Hospital (Ghent, Belgium) and Catharina Hospital Eindhoven (Eindhoven, the Netherlands).
Objective: Both Indigenous and non-Indigenous governments and organizations have increasingly called for improved Indigenous health data in order to improve health equity among Indigenous peoples. This scoping review identifies best practices, potential consequences and barriers for advancing Indigenous health data and Indigenous data sovereignty globally.
Methods: A scoping review was conducted to capture the breadth and nature of the academic and grey literature.
Controlling the movement in artificial molecular machines is a key challenge that needs to be solved before their full potential can be harnessed. In this study, two isomeric tri-stable [2]rotaxanes 1·4PF and 2·4PF incorporating both a tetrathiafulvalene (TTF) and a monopyrrolotetrathiafulvalene (MPTTF) unit in the dumbbell component have been synthesised to measure the energy barriers when the tetracationic cyclobis(paraquat--phenylene) (CBPQT) ring moves across either a TTF or an MPTTF dication. By strategically exchanging one of the thiomethyl barriers on either the TTF unit or the MPTTF unit with the bulkier thioethyl group, the movement of the CBPQT ring in 1 and 2 can be controlled to take place in only one direction upon tetra-oxidation.
View Article and Find Full Text PDFWithin the reduced basis methods approach, an effective low-dimensional subspace of a quantum many-body Hilbert space is constructed in order to investigate, e.g., the ground-state phase diagram.
View Article and Find Full Text PDFHaldane topological materials contain unique antiferromagnetic chains with symmetry-protected energy gaps. Such materials have potential applications in spintronics and future quantum computers. Haldane topological solids typically consist of spin-1 chains embedded in extended three-dimensional (3D) crystal structures.
View Article and Find Full Text PDFSexually transmitted HIV infections in heterosexual men are acquired through the penis. Low adherence to condom usage and the fact that 40% of circumcised men are not protected indicate the need for additional prevention strategies. Here, we describe a new approach to evaluate the prevention of penile HIV transmission.
View Article and Find Full Text PDFPurpose: A first clinical evaluation of a new hand-driven hysteroscopic tissue removal device, Resectr 5fr, for office polypectomy without any anesthesia.
Methods: Women with at least one small endometrial polyp were eligible. Hysteroscopic polypectomy was performed using the Resectr 5fr in an office setting, without any anesthesia.
Study Objective: To compare nifedipine, naproxen, or placebo for pain relief during diagnostic hysteroscopy.
Design: Double-blind, randomized controlled pilot study.
Setting: University hospital.
Introduction: Meta-analyses comparing hysteroscopic electromechanical morcellation with electrosurgical resection showed a shorter operating time for electromechanical morcellation, mainly for polypectomy. The Resectr™ 9Fr is a new hysteroscopic manual morcellator, designed to simplify this procedure. We aimed to compare manual with electromechanical morcellation for hysteroscopic polypectomy.
View Article and Find Full Text PDFWe aimed to evaluate the feasibility of a heart-shaped intrauterine balloon as antiadhesion method immediately after hysteroscopic adhesiolysis in terms of surgeon's and patient's experience. This feasibility study was performed at the Ghent University Hospital (Belgium) from 2018 to 2020. A heart-shaped intrauterine balloon was inserted in 10 women immediately after hysteroscopic adhesiolysis and left in place for 7 days under antibiotic prophylaxis.
View Article and Find Full Text PDFTuberculosis (TB) is a communicable disease caused by Mycobacterium tuberculosis (Mtb) and is a major cause of morbidity and mortality. Successful treatment requires strict adherence to drug regimens for prolonged periods of time. Long-acting (LA) delivery systems have the potential to improve adherence.
View Article and Find Full Text PDFQuantum phase transitions in quantum matter occur at zero temperature between distinct ground states by tuning a nonthermal control parameter. Often, they can be accurately described within the Landau theory of phase transitions, similarly to conventional thermal phase transitions. However, this picture can break down under certain circumstances.
View Article and Find Full Text PDFWe present a methodology to investigate phase diagrams of quantum models based on the principle of the reduced basis method (RBM). The RBM is built from a few ground-state snapshots, i.e.
View Article and Find Full Text PDFBackground: Stratum corneum (SC) hydration is vital for the optimal maintenance and appearance of healthy skin. In this context, we evaluated the efficacy of an NMF-enriched moisturizer containing 10% urea on different aspects of SC hydration of dry skin.
Material And Methods: In two clinical studies, the hydration efficacy of the moisturizer in comparison to its vehicle was investigated.
Objective: An interstitial pregnancy is a rare form of ectopic pregnancy. Diagnosis and management can be challenging. Treatment often involves invasive uterine surgery.
View Article and Find Full Text PDFActa Obstet Gynecol Scand
December 2021
Introduction: Numerous studies have been performed assessing optimal treatment regimens for evacuating (retained) products of conception from the uterus, but standardized criteria for diagnosing retained products of conception (RPOC) are still lacking. We aim to provide an overview of diagnostic criteria in current literature, used to diagnose RPOC after induced first-trimester abortion or early pregnancy loss.
Material And Methods: Pubmed, EMBASE, and the Cochrane library were searched systematically up until March 2020 for English articles reporting on induced abortion or early pregnancy loss.
At the liquid-gas phase transition in water, the density has a discontinuity at atmospheric pressure; however, the line of these first-order transitions defined by increasing the applied pressure terminates at the critical point, a concept ubiquitous in statistical thermodynamics. In correlated quantum materials, it was predicted and then confirmed experimentally that a critical point terminates the line of Mott metal-insulator transitions, which are also first-order with a discontinuous charge carrier density. In quantum spin systems, continuous quantum phase transitions have been controlled by pressure, applied magnetic field and disorder, but discontinuous quantum phase transitions have received less attention.
View Article and Find Full Text PDFThe exact critical Casimir amplitude is derived for anisotropic systems within the d=2 Ising universality class by combining conformal field theory with anisotropic φ^{4} theory. Explicit results are presented for the general anisotropic scalar φ^{4} model and for the fully anisotropic triangular-lattice Ising model in finite rectangular and infinite strip geometries with periodic boundary conditions. These results demonstrate the validity of multiparameter universality for confined anisotropic systems and the nonuniversality of the critical Casimir amplitude.
View Article and Find Full Text PDFStudy Questions: Does the application of anti-adhesion gel, compared to no gel, following operative hysteroscopy to treat intrauterine pathology in women wishing to conceive increase the chance of conception leading to live birth?
What Is Known Already: Intrauterine adhesions (IUAs) following operative hysteroscopy may impair reproductive success in women of reproductive age. Anti-adhesion barrier gels may decrease the occurrence of IUAs, but the evidence on their effectiveness to improve reproductive outcomes is sparse and of low quality.
Study Design Size Duration: This multicentre, parallel group, superiority, blinded and pragmatic randomised controlled trial is being carried out in seven participating centres in Belgium.
Objectives: To compare hysteroscopic morcellation with bipolar resection for the removal of submucous type 0 and 1 myomas, in terms of procedure time (primary outcome), adverse events, tissue availability, short term effectiveness and postoperative adhesion formation (secondary outcomes).
Study Design: The study was performed from May 2011 to May 2018 in the Catharina hospital (Eindhoven, the Netherlands) and the Ghent University hospital (Ghent, Belgium). Women with type 0 and 1 submucous myomas up to 3 cm were randomized to hysteroscopic morcellation with the TruClear 8.