Wafer-Scalable Single-Layer Amorphous Molybdenum Trioxide.

Molybdenum trioxide (MoO), an important transition metal oxide (TMO), has been extensively investigated over the past few decades due to its potential in existing and emerging technologies, including catalysis, energy and data storage, electrochromic devices, and sensors. Recently, the growing interest in two-dimensional (2D) materials, often rich in interesting properties and functionalities compared to their bulk counterparts, has led to the investigation of 2D MoO. However, the realization of large-area true 2D (single to few atom layers thick) MoO is yet to be achieved.

Additive-Free and Support-Free 3D Printing of Thermosetting Polymers with Isotropic Mechanical Properties.

The democratization of thermoplastic 3D printing is rooted in the ease of processing enabled by economical melting and shaping. Thermosetting polymers, on the other hand, have not enjoyed this advantage given that thermosetting resins cannot hold their shape without cross-linking or excessive fillers, and once cross-linked, they cannot be extruded for printing. Due to this formidable challenge, thus far, 3D printing of thermosetting polymers has been limited to the photopolymerization of specialized photosensitive resins or extrusion of resins loaded with large fractions (as high as 20 wt %) of rheology modifiers.

Three-Dimensional Printing of Ceramics through "Carving" a Gel and "Filling in" the Precursor Polymer.

Achieving a viable process for three-dimensional (3D) printing of ceramics is a sought-after goal in a wide range of fields including electronics and sensors for harsh environments, microelectromechanical devices, energy storage materials, and structural materials, among others. Low laser absorption of ceramic powders renders available additive manufacturing (AM) technologies for metals not suitable for ceramics. Polymer solutions that can be converted to ceramics (preceramic polymers) offer a unique opportunity to 3D-print ceramics; however, due to the low viscosity of these polymers, so far, their 3D printing has only been possible by combining them with specialized light-sensitive agents and subsequently cross-linking them layer by layer by rastering an optical beam.

PAF levels and PAF-AH activities in placentas from normal and preeclamptic pregnancies.

Objective: The aim of this study was to determine: (1) platelet-activating factor (PAF) levels and PAF-acetylhydrolase (PAF-AH) activities in normal and preeclamptic placentas; (2) lipid peroxide production by placental tissues stimulated with PAF.

Methods: Placentas were obtained immediately after delivery from normal and preeclamptic pregnancies. Tissue pieces were snap frozen in liquid nitrogen and stored at -70 degrees C.

Successful magnesium sulfate tocolysis: is "weaning" the drug necessary?

Objective: Magnesium sulfate is the most commonly used tocolytic agent for preterm labor. A common clinical practice is to slowly discontinue the drug (wean) after successful tocolysis. Our objective was to determine the necessity of this practice.

The utility of amnioinfusion in the prophylaxis of meconium-stained amniotic fluid infectious morbidity.

Objectives: To evaluate the utility of intrapartum amnioinfusion (AI) in reducing the infectious morbidity of patients with meconium-stained fluid (MSF). Previous studies have shown increased intraamniotic infection (IAI) and postpartum endometritis (PPE) rates in patients with MSF. Intraamniotic infection has been reduced with the prophylactic administration of ampicillin-sulbactam in MSF.

Preterm premature ruptured membranes: a randomized trial of steroids after treatment with antibiotics.

Objective: To assess the effectiveness of corticosteroids in patients with preterm premature rupture of membranes (PROM) after treatment with a broad-spectrum antibiotic, ampicillin-sulbactam.

Methods: A randomized clinical trial of corticosteroids in patients with preterm PROM was undertaken after treating these patients for a minimum of 12 hours with ampicillin-sulbactam. No digital vaginal examinations were performed on these patients.

Morphological and biochemical studies of the elastic fibres in the craniomandibular joint articular disc of the tight-skin mouse.

The tight-skin (TSK) mouse is characterized by the hyperplasia of loose connective tissues, and of excessive growth of cartilage and of bones including the mandible. Since the fibroelastic connective tissues of the craniomandibular joint (CMJ) are essential to the functions of this joint, the present histological study compared the presence and general distribution of elastic fibres in CMJ discal tissues of TSK and normal mice. The excised CMJs were processed for light microscopy.