Highly porous nanocellulose aerogels can be prepared by vacuum freeze-drying from microfibrillated cellulose hydrogels. Here we show that functionalizing the native nanofibrils of aerogel with a hydrophobic but oleophilic coating, such as titanium dioxide, selectively oil-absorbing material capable floating on water is achieved. Because low density and ability to absorb nonpolar liquids oils up nearly all its initial volume, surface modified allow collect organic contaminants surface. The...

Hollow nano-objects have raised interest in applications such as sensing, encapsulation, and drug-release. Here we report on a new class of porous materials, namely inorganic nanotube aerogels that, unlike other aerogels, framework consisting hollow nanotubes. First show preparation method for titanium dioxide, zinc oxide, aluminum oxide based atomic layer deposition (ALD) biological nanofibrillar aerogel templates, that is, nanofibrillated cellulose (NFC), also called microfibrillated (MFC)...

Nature offers exciting examples for functional wetting properties based on superhydrophobicity, such as the self-cleaning surfaces plant leaves and trapped air immersed insect allowing underwater breathing. They inspire biomimetic approaches in science technology. Superhydrophobicity relies Cassie state where is within surface topography. Pressure can trigger an irreversible transition from to Wenzel with no air--this usually detrimental nonwetting functionality be avoided. Here we present a...

Mechanically excellent native cellulose nanofibers that are cleaved from plant cell walls have been modified by functionalized few-walled carbon nanotubes for hybrid nanofiber/nanotube aerogels. They show elastic mechanical behavior in combination with reversible electrical response under compression allowing responsive conductivity and pressure sensing. The concept combines wide availability of nanocellulosics functionality synergistically.

Graphene/cellulose nanocomposite paper with high mechanical and electrical performances was reported in this study by combining reduced graphene oxide sheets (RGO) amine-modified nanofibrillated cellulose (A-NFC) a well-controlled manner. By adjusting the GO content, various graphene/cellulose nanocomposites 0.1–10 wt% content of were obtained. The RGO/A-NFC synthesized developed method exhibits an percolation threshold 0.3 conductivity 4.79 × 10−4 S m−1, which is well above antistatic...

Surface wettability is usually evaluated by the contact angle between perimeter of a water drop and surface. However, this single measurement not enough for proper characterization, so-called advancing receding angles also need to be measured. Measuring can challenging, especially extremely hydrophobic surfaces. We demonstrate reliable procedure using common needle-in-the-sessile-drop method. Generally, line movement needs followed, true has distinguished from "pseudo-movement" occurring...

BackgroundTranscranial magnetic stimulation (TMS) allows non-invasive of the cortex. In multi-locus TMS (mTMS), stimulating electric field (E-field) is controlled electronically without coil movement by adjusting currents in coils a transducer.ObjectiveTo develop an mTMS system that location and orientation E-field maximum within cortical region.MethodsWe designed manufactured planar 5-coil transducer to allow controlling induced region approximately 30 mm diameter. We developed electronics...

We investigate supramolecular complexes where a mesogenic molecule, cholesteryl hemisuccinate (CholHS), is hydrogen-bonded to homopolymer, poly(4-vinylpyridine) (P4VP), allow liquid crystallinity and block copolymer polystyrene-block-poly(4-vinylpyridine) (PS-b-P4VP), hierarchical self-assembly. Blends of P4VP CholHS (with one or less molecules vs each pyridine group) form microphase separated smectic A (SmA) structures the periods correspond head-to-head arrangement mesogens, based on small...

Abstract Monitoring cortical responses to neuromodulation on preclinical models can elucidate fundamental mechanisms of brain function. Concurrent stimulation and imaging is challenging, usually compromising spatiotemporal resolution, accuracy, versatility. Here, we report a non-invasive system with electronic control parameters in 9.4-T magnetic resonance (MRI) environment. In the scanner, multi-coil transcranial (mTMS) delivered 2-coil array, MRI signal measured radiofrequency coil. The...

To investigate recovery times and need for laparoscopy in women with ectopic pregnancy who were treated 5 days 2.5 mg/day of oral methotrexate or placebo.Sixty among patients an outpatient clinic specializing early disorders selected medical treatment a double-blind, placebo-controlled study. The diagnosis was made by transvaginal sonography serum hCG determinations, either at admission after repeated examinations. Women recruited the study if they had mild symptoms: increase less than 50%...

We studied sonographic findings and levels of human chorionic gonadotropin (hCG) in 71 patients with a presumed ectopic pregnancy, recruited for conservative management, to find out whether these parameters may be useful monitoring treatment. Patients were selected on the basis decreasing hCG levels, minimal symptoms an adnexal mass, suggestive < or = 5 cm at transvaginal sonography. In 49 (69%) pregnancy resolved spontaneously: mass significantly more slowly than did levels. 22 (31%) cases...

Here we show that it is possible to control the overall morphology as well hierarchical microstructure of lamellae-forming block copolymers within nanoparticles by altering side-chain content and processing temperature. We used cholesteryl hemisuccinate (CholHS) hydrogen-bonded side chains poly(styrene)-block-poly(4-vinylpyridine) (PS–P4VP) backbone produce submicrometer particles with aerosol method. With CholHS-to-P4VP repeat unit ratio 0.25 0.50, obtained onion-like either single CholHS...

Random copolymers of styrene and 4-vinylpyridine P(S1−x-co-4VPx) were synthesized to study the effect random copolymer "repulsion" on self-assembly in hydrogen-bonded complexes with pentadecylphenol (one PDP molecule per 4VP group). The major trends observed as a function fraction monomers 1 − x are decrease order−disorder transition temperature, TODT, periodic length scale ordered lamellar state. lower TODT results from partial shielding disordered state highly unfavorable...

Neuroimaging-based machine learning (ML) algorithms have the potential to aid clinical diagnosis of schizophrenia. However, literature on effect prevalent comorbidities such as substance use disorder (SUD) and antisocial personality (ASPD) these models' performance has remained unexplored. We investigated whether presence SUD or ASPD affects neuroimaging-based ML models trained discern patients with schizophrenia (SCH) from controls.We an model structural MRI data public datasets distinguish...

Superhydrophobicity has gained extensive interest in academia and industry. One of the most facile ways creating superhydrophobic surfaces is surface-initiated synthesis 1D polysiloxane nanostructures known as silicone nanofilaments. However, physicochemical details their process remain a puzzle, studies so far have fallen short explaining which 3D film growth transforms into objects. From observation hollow cylindrical nanostructures, this study proposes model based on pressure-induced...

We studied the dynamics of serum human chorionic gonadotrophin (HCG) and its free alpha (HCG alpha) beta beta) subunits in 49 early pregnancies achieved by in-vitro fertilization (IVF) embryo transfer. Of pregnancies, nine were normal singleton 11 twin ectopic, eight ended a clinical (spontaneous) abortion 10 preclinical abortion. The HCG, HCG concentrations measured on days 12, 19 26 after Most ectopic could be distinguished from (and twin) basis low 12 transfer, but abortions not...

Abstract Monitoring cortical responses to neuromodulation protocols on preclinical models can elucidate fundamental mechanisms of brain function. Concurrent stimulation and imaging is challenging, usually compromising spatiotemporal resolution, accuracy, versatility. Here we report a non-invasive system with electronic control parameters in 9.4-T magnetic resonance (MRI) environment. In the scanner, transcranial delivered set two coils MRI signals are recorded radiofrequency coil. The coil...