Resilience of the Aurivillius structure upon La and Cr doping in a BiTiFeO multiferroic.

Combining the experimental techniques of high-resolution X-ray diffraction, magnetometry, specific heat measurement, and X-ray photoelectron, Raman and dielectric spectroscopy techniques, we have studied the influence of La and Cr doping on the crystal structure and magnetism of the room temperature Aurivillius multiferroic BiTiFeO by investigating the physical properties of (BiLa)TiFeO and BiTi (FeCr)O. The parent (BiTiFeO) and the doped ((BiLa)TiFeO and BiTi(FeCr)O) compounds crystallize in the 2 space group, which is confirmed through our analysis of high-resolution synchrotron X-ray diffraction data obtained on phase-pure polycrystalline powders. We determined the oxidation states of the metal atoms in the studied compounds as Fe, Ti, Cr, and La through the analysis of X-ray photoelectron spectroscopy data.

Tunable structure of TiO deposited by DC magnetron sputtering to adsorb Cr (VI) and Fe (III) from water.

TiO thin films with mixtures of the anatase, rutile, and brookite phases were deposited on glass substrates via magnetron sputtering. Based on XRD and Raman results, the TiO-0.47 and TiO-3.

Chitosan Functionalized with 2-Methylpyridine Cross-Linker Cellulose to Adsorb Pb(II) from Water.

In this study, chitosan was chemically modified with 2-methylpyridine. Subsequently, the modified chitosan was cross-linked to cellulose using succinic anhydride. Additionally, the capacity of cellulose derivatives to adsorb Pb(II) ions in an aqueous solution was studied through the determination of Pb(II) ions concentration in water, using microwave plasma atomic emission spectroscopy (MP-AES).

The Development and Characterization of a Cotton-Chitosan Composite for Lead Removal from Water.

Heavy metals in water are a serious environmental problem due to their accumulation and toxicity; there are several processes we can use to address this issue, but adsorption is the most popular due to its simplicity and efficiency. Polysaccharides such as cellulose have received attention as adsorbents for heavy metals, and cotton-chitosan composites (CCs) were developed here with nontoxic reagents such as carboxylic acids as crosslinkers and NaHPO as a catalyst to achieve chitosan covalent crosslinkage into oxidized cotton textiles with HO. The composites were characterized by fourier-transform infrared spectroscopy (FTIR), elemental analysis (EA), X-ray photoelectron spectroscopy (XPS), atomic-force and scanning electron microscopy (AFM and SEM), and tensile strength; the adsorption of lead ions (Pb) was evaluated with cotton-chitosan composites and quantified by microwave plasma atomic emission spectroscopy (MP-AES).

3D bioprinted human iPSC-derived somatosensory constructs with functional and highly purified sensory neuron networks.

Engineering three-dimensional (3D) sensible tissue constructs, along with the complex microarchitecture wiring of the sensory nervous system, has been an ongoing challenge in the tissue engineering field. By combining 3D bioprinting and human pluripotent stem cell (hPSC) technologies, sensible tissue constructs could be engineered in a rapid, precise, and controllable manner to replicate 3D microarchitectures and mechanosensory functionalities of the native sensory tissue (e.g.

A 3D-Printed Hybrid Nasal Cartilage with Functional Electronic Olfaction.

Advances in biomanufacturing techniques have opened the doors to recapitulate human sensory organs such as the nose and ear in vitro with adequate levels of functionality. Such advancements have enabled simultaneous targeting of two challenges in engineered sensory organs, especially the nose: i) mechanically robust reconstruction of the nasal cartilage with high precision and ii) replication of the nose functionality: odor perception. Hybrid nasal organs can be equipped with remarkable capabilities such as augmented olfactory perception.

Surgical Patients' Perception About Behaviors of Humanized Nursing Care.

Introduction: One of the greatest challenges that health professionals face is providing humanized care, especially when technological advancements contribute to the depersonalization of care delivery. In this sense, nursing care not only requires the nurse to be scientific, academic, and clinical but also a humanitarian and moral agent, as a partner in human transactions.

Method: Quantitative, descriptive, and transversal study.