Study of the effect of bleaching agents on the crystalline index of cellulose-based materials derived from corn husk by CP/MAS C NMR and FT-IR spectroscopies.

This work proposes an evaluation of the Crystalline Index (CrI) in function of the bleaching process employed during cellulose extraction from corn husk, for further characterization using CP/MAS C NMR, XRD, and FT-IR. In that sense, CrI values were calculated by FT-IR and the bands associated with the crystalline and amorphous regions were observed at 1424 cm and 896 cm, respectively. Similarly, the signals due to ordered (89.

Plant Fibers as Composite Reinforcements for Biomedical Applications.

Plant fibers possess high strength, high fracture toughness and elasticity, and have proven useful because of their diversity, versatility, renewability, and sustainability. For biomedical applications, these natural fibers have been used as reinforcement for biocomposites to infer these hybrid biomaterials mechanical characteristics, such as stiffness, strength, and durability. The reinforced hybrid composites have been tested in structural and semi-structural biodevices for potential applications in orthopedics, prosthesis, tissue engineering, and wound dressings.

Green composites based on thermoplastic starch reinforced with micro- and nano-cellulose by melt blending - A review.

Starch is a biodegradable biopolymer, a sustainable material that can replace conventional petrochemical-based plastics. However, starch has some limitations, as it must be processed by heating and treated mechanically with a plasticizer to become thermoplastic starch (TPS). Different variables such as mixing speeds, amount, and kind of plasticizers play a vital role in preparing TPS by melting.

Setting priorities for an agenda within the Spanish pediatric emergency medicine research network.

The research network of the Spanish Pediatric Emergency Society (RISeuP-SPERG Network) needs to establish its research agenda relevant to pediatric emergency medicine (PEM) to guide the development of future projects, as other networks have done before. The aim of our study was to identify priority areas in PEM for a collaborative network of pediatric emergency research in Spain. A multicenter study was developed including pediatric emergency physicians from 54 Spanish emergency departments, endorsed by the RISeuP-SPERG Network.

Invasive bacterial infection in children with fever and petechial rash in the emergency department: a national prospective observational study.

Objective: To determine the incidence and clinical predictors of invasive bacterial infection (IBI) in well-appearing children who present to the emergency department (ED) with fever and petechiae.

Design: A prospective, observational, multicentre study was conducted in 18 hospitals between November 2017 and October 2019.

Patients: A total of 688 patients were recruited.

Novel carbon skeletons activate human NicotinAMide Phosphoribosyl Transferase (NAMPT) enzyme in biochemical assay.

Nicotinamide adenine dinucleotide (NAD) is a central molecule in cellular metabolism that has been implicated in human health, the aging process, and an array of human diseases. NAD is well known as an electron storage molecule, cycling between NAD and the reduced NADH. In addition, NAD is cleaved into nicotinamide and Adenine diphosphate ribose by NAD-consuming enzymes such as sirtuins, PARPs and CD38.

Feasibility and acceptability of a hospital-at-home program for adolescents with eating disorders: Making progress in community/family-based treatments.

Objective: To explore the feasibility and acceptability of a novel hospital-at-home (HaH) program for adolescent patients with a severe eating disorder (ED).

Method: Retrospective description of the program during its first year of activity. The feasibility construct is based on accessibility, recruitment, rate of retention, avoidance of hospital stays, and management of crisis situations.

Damage Detection in Steel-Concrete Composite Structures by Impact Hammer Modal Testing and Experimental Validation.

Steel-concrete composite systems are an efficient alternative to mid- and high-rise building structures because of their high strength-to-weight ratio when compared to traditional concrete or steel constructive systems. Nevertheless, composite structural systems are susceptible to damage due to, for example, deficient construction processes, errors in design and detailing, steel corrosion, and the drying shrinkage of concrete. As a consequence, the overall strength of the structure may be significantly decreased.

Evaluation of the Technical Viability of Distributed Mechanical Recycling of PLA 3D Printing Wastes.

3D printing PLA wastes were recovered from a well-known reference grade and from different sources. The recovered wastes were subjected to an energic washing step and then reprocessed into films by melt-extrusion, followed by compression molding to simulate the industrial processing conditions. The obtained materials were characterized and the optical, structural, thermal and crystallization behavior are reported.

Effect of supercritical incorporation of cinnamaldehyde on physical-chemical properties, disintegration and toxicity studies of PLA/lignin nanocomposites.

Poly (lactic acid)/lignin nanocomposites (PLA/Lig-Np) containing cinnamaldehyde (Ci) were obtained by a combination of melt extrusion and supercritical impregnation process. In this work, Ci impregnation tests were carried out in a high-pressure cell at 40 °C for 3 h using 12 MPa and 1 MPa min of depressurization rate, obtaining impregnation yields ranging from 5.7 to 10.

Children and adolescents with eating disorders during COVID-19 confinement: Difficulties and future challenges.

Objective: To present the adaptations to treatment protocols made in a child and adolescent eating disorders (ED) unit during the eight-week confinement period mandated in response to the COVID-19 pandemic and examine clinical and treatment variables in the outpatient, day hospital, and inpatient care programs.

Method: Description of the implementation of a combined teletherapy program for outpatient and day-hospital patients and the adaptations made to the inpatient protocol. Retrospective review of medical records and analysis of general and specific variables related to the pandemic and confinement.

Cubic Anisotropic Co- and Zn-Substituted Ferrite Nanoparticles as Multimodal Magnetic Agents.

The use of magnetic nanoparticles as theranostic agents for the detection and treatment of cancer diseases has been extensively analyzed in the last few years. In this work, cubic-shaped cobalt and zinc-doped iron oxide nanoparticles with edge lengths in the range from 28 to 94 nm are proposed as negative contrast agents for magnetic resonance imaging and to generate localized heat by magnetic hyperthermia, obtaining high values of transverse relaxation coefficients and specific adsorption rates. The applied magnetic fields presented suitable characteristics for the potential validation of the results into the clinical practice in all cases.

Multicatalysis Combining 3D-Printed Devices and Magnetic Nanoparticles in One-Pot Reactions: Steps Forward in Compartmentation and Recyclability of Catalysts.

A tricatalytic compartmentalized system that immobilizes metallic species to perform one-pot sequential functionalization is described: a three-dimensional (3D)-printed palladium monolith, ferritic copper(I) magnetic nanoparticles, and a 3D-printed polypropylene capsule-containing copper(II) loaded onto polystyrene-supported 1,5,7-triazabicyclo[4.4.0]dec-5-ene (PS-TBD) allowed the rapid synthesis of diverse substituted 1-([1,1'-biphenyl]-4-yl)-1-1,2,3-triazoles.

[Retrospective analysis of 6 cases of elastofibroma dorsi].

Elastofibroma dorsi is a benign lesion of fibroelastic tissue. It often presents bilaterally, is frequently localized to the subscapular region, and is more common in middle-aged and elderly women. The pathogenesis is still unclear but it has been suggested to involve reactive, degenerative, or neoplastic processes.

Generalized granuloma annulare and giant cell arteritis.

Granuloma annulare (Gan) and giant cell arteritis (GCA) share common histologic features. In Gan, a disease characterized by the presence of palisading granulomas usually in the dermis, the main alteration is the presence of elastic fiber degeneration and it strongly suggests that the primary target leading to the development of this disorder is the injury to the elastic tissue. On the other hand, in giant cell arteritis (GCA), a vasculitis involving large-and middle-sized blood vessels, the main histologic features are the disruption of the internal elastic lamina and the nonsuppurative granulomatous giant cell infiltrate, which seems to be focused around the disintegrated elastic fibers.

Purpuric generalized lichen nitidus: an unusual eruption simulating pigmented purpuric dermatosis.

Background: Generalized haemorrhagic lichen nitidus is rare. To our knowledge, this form of presentation has only been reported once.

Objective: To describe a new case of generalized haemorrhagic lichen nitidus simulating a pigmented purpuric dermatosis.

Organization of cholinergic systems in the brain of different fish groups: a comparative analysis.

Using choline acetyltransferase immunocytochemistry, we compared the cholinergic systems of the brains of four groups of fishes (lampreys, elasmobranchs, chondrosteans, and teleosts). Cholinergic nuclei were classified in four groups according to their distribution in vertebrates. The cranial motor nuclei and the habenulo-interpeduncular system were cholinergic in all vertebrates.

Yellow nails and minimal change nephrotic syndrome.

We report a case of a 38-year-old man showing the yellow nail syndrome in association with minimal change nephrotic syndrome. Treatment with prednisone and vitamin E resulted in complete resolution of the nephrotic syndrome and slow improvement of the yellow nails, respectively. Although the rare yellow nail syndrome has been described in association with renal disease, this is the first report of the association of this syndrome with minimal change nephrotic syndrome.

Spindle cell hemangioendotheliomas associated with multiple skeletal enchondromas: a variant of Maffucci's syndrome.

An unusual case of Maffucci's syndrome confined to an extremity with an additional superficial lymphangioma in the same limb is described. The patient, a 47-year-old woman, presented with several painful subcutaneous spindle cell hemangioendotheliomas (SCHs) and multiple lytic bone lesions, some calcified, in the left leg. She has been followed for two years and continues to do well.

Mononucleosis-like illness as a manifestation of carbamazepine-induced anticonvulsant hypersensitivity syndrome.

We describe a case of infectious mononucleosis-like as a manifestation of carbamazepine-induced anticonvulsant hypersensitivity syndrome. Patch testing to carbamazepine and phenytoin were positive and negative to phenobarbital. Our results suggest a cell mediated type of immune response in the pathogenesis of this syndrome.

Familial erythromelanosis follicularis faciei et colli--an autosomal recessive mode of inheritance.

Two cases of erythromelanosis follicularis faciei et colli in one family, affecting a brother and sister are described. In these cases erythromelanosis follicularis faciei et colli, a process of unknown aetiology, seems to have a clear hereditary component--autosomal recessive mode of inheritance--a feature which, as far as we know, has not been reported in the literature.