Core and surface structure and magnetic properties of mechano-synthesized LaFeO nanoparticles and their Eu-doped and Eu/Cr-co-doped variants.

The core and surface structure, and magnetism of mechano-synthesized LaFeO nanoparticles (30-40 nm), Eu-doped (LaEuFeO), and Eu/Cr co-doped (LaEuFeCrO) are reported. Doping results in a transition from the O'-type to the O-type distorted structure. Traces of reactants, intermediate phases, and a small amount of Eu ions were detected on the surfaces of the nanoparticles.

Perceived Knowledge, Attitude, and Practices (KAP) and Fear toward COVID-19 among Patients with Diabetes Attending Primary Healthcare Centers in Kuwait.

Objectives: To assess perceived fear and to evaluate the level of knowledge, attitude, and prevention practices (KAP) regarding COVID-19 infection among patients with diabetes mellitus (DM) attending primary healthcare centers (PHCs) in Kuwait. This will help evaluate gaps and provide appropriate support to limit the spread of COVID-19 infection in high-risk patients.

Methods: A descriptive cross-sectional study was carried out using a self-administered questionnaire.

Minimally invasive retrieval of a bullet settling into the thoracic spinal canal in a pediatric patient: A case report.

A 10-year-old boy presented to neurosurgery department after a gunshot wound to the upper thoracic spine. The bullet entered through the right deltoid muscle and lodged inside the spinal canal at T1 level. The patient arrived conscious and obeying commands; however, he experienced a loss of sensation below T3 level, loss of reflexes below the injured T1 level, loss of anal sphincter tone and paraplegia in the lower limbs (American Spinal Injury Association grade-A).

Reflective practice in psychiatric training: Balint groups during COVID-19.

Reflective practice is increasingly being recognized as an important component of doctors' professional development. Balint group practice is centered on the doctor-patient relationship: what it means, how it may be used to benefit patients, and why it commonly fails owing to a lack of understanding between doctor and patient. The COVID-19 pandemic led to unprecedented disruption to postgraduate medical training programs, including the mandatory Balint groups for psychiatric trainees.

External ventricular drainage: indications and outcome among Sudanese Children.

This study reflects our experience in managing Sudanese children with different cranial conditions through external ventricular drainage (EVD): indications for EVD, pathologies faced, and early outcome. A prospective review of cases operated at the National Center for Neurological Sciences was carried out during the period from February 2014 to February 2016. The patients were closely followed up till EVD removal and discharge.

Thermodynamics of translational and rotational dynamics of C9 hydrocarbons in the pores of zeolite-beta.

There has been a growing interest in the separation of aromatic hydrocarbon molecules from the petroleum stream using zeolite-based technologies. This led to numerous experimental and molecular simulation studies of the structural and dynamical properties of aromatic hydrocarbons under the confinement of microporous materials like zeolites. The understanding of the behavior of the isomers of the trimethylbenzene under confinement is crucial for their separation and purification from industrial streams.

From nowhere to nowhere. Homelessness and incarceration: a systematic review and meta-analysis.

Purpose: This study aims to review international literature systematically to estimate the prevalence of homelessness among incarcerated persons at the time of imprisonment and the time of discharge.

Design/methodology/approach: A systematic review methodology was used to identify quantitative observational studies that looked at the prevalence of homelessness at the time of imprisonment, or up to 30 days prior to that point (initial homelessness), and at the time of discharge from prisons. Studies reported in English from inception to 11 September 2019 were searched for using eight databases (PsycInfo, Medline, Embase, CINAHL, PsycArticles, Scopus, Web of Science and the Campbell Collaboration), in addition to grey literature.

Managing a patient with bipolar disorder associated with COVID-19: A case report from Qatar.

This case highlights an atypical presentation of a patient with unknown history of mental disease who has been diagnosed with a bipolar disorder associated with severe COVID-19 symptoms. Neuroimaging was only positive for subtle white matter changes; he was treated with antipsychotics and mood-stabilizing agents until he reached partial remission. The authors urge clinicians to consider the impact of the COVID-19 pandemic on patients with mental illness and the urgent need for vigilant monitoring of presenting signs and symptoms.

Brain abscess burr hole aspiration in children with congenital heart disease in low facility centers: case series.

This is a prospective cross-sectional study on brain abscess burr hole aspiration in children with congenital heart disease (CHD) performed from January 2018 to March 2019. All patients were operated on through a burr hole, and then received intravenous antibiotics for 6 weeks and orally for 2 weeks either empirically or according to the results of abscess culture, if positive. The follow-up of cranial computed tomography or brain magnetic resonance image with contrast was obtained after 2 months (post-operatively) to assess the effectiveness of the procedure and to look for any residual or recurrent abscesses.

Psychiatrists and homicidal threats: a cross-sectional study.

Objectives: To investigate the frequency, characteristics and impact of death threats by patients towards psychiatrists.

Methods: A cross-sectional survey of psychiatrists ( = 60) was undertaken to investigate the frequency, characteristics and impact of death threats by patients in one Irish healthcare region serving a mixed urban-rural population of 470,000.

Results: Forty-nine responses (82%) were received.

COVID-19 vaccine hesitancy and attitudes in Qatar: A national cross-sectional survey of a migrant-majority population.

Background: Vaccine hesitancy is a global threat undermining control of preventable infections. Emerging evidence suggests that hesitancy to COVID-19 vaccination varies globally. Qatar has a unique population with around 90% of the population being economic migrants, and the degree and determinants of hesitancy are not known.

Homelessness amongst psychiatric Inpatients: a cross-sectional study in the mid-west of Ireland.

Background: This cross-sectional study sought to establish the prevalence of homelessness amongst inpatients in two psychiatric units in Ireland and explore the perceived relationship between psychiatric illness and homelessness.

Methods: The study employed a semi-structured interview format utilising a specifically designed questionnaire which received ethical approval from the Limerick University Hospitals Group ethics committee.

Results: Fifty psychiatric inpatients were interviewed.

Free and partially encapsulated manganese ferrite nanoparticles in multiwall carbon nanotubes.

Free and partially encapsulated manganese ferrite (MnFeO) nanoparticles are synthesized and characterized regarding structure, surface, and electronic and magnetic properties. The preparation method of partially encapsulated manganese ferrite enables the formation of a hybrid nanoparticle/tube system, which exhibits properties of manganese ferrite nanoparticles inside and attached to the external surface of the tubes. The effect of having manganese ferrite nanoparticles inside the tubes is observed as a shift in the X-ray diffraction peaks and as an increase in stress, hyperfine field, and coercivity when compared to free manganese ferrite nanoparticles.

Sn Doping: A Strategy for Tuning of FeO Nanoparticles Magnetization Dipping Temperature/Amplitude, Irreversibility, and Curie Point.

Doped magnetite (SnFeO) nanoparticles (NPs) (12-50 nm) with different amount of Sn ions (x) were synthesized using co-precipitation method. Sn doping reduces the anticipated oxidation of FeO NPs to maghemite (γ-FeO), making them attractive in several magnetic applications. Detailed characterizations during heating-cooling cycles revealed the possibility of tuning the unusual observed magnetization dipping temperature/amplitude, irreversibility, and Curie point of these NPs.

Surgical Intervention for Unstable Craniovertebral Junction Anomalies with Narrow C Pedicle.

Objective: We sought to investigate and report a novel surgical technique of screws insertion and posterior surgical reduction, as well as explore its clinical results.

Methods: From September 2008 to September 2012, we treated 41 cases of unstable craniovertebral junction anomalies with a narrow C pedicle at our department. All patients underwent "posterior reduction and internal fixation of the occipital bone with superior or inferior articular process of C and lateral mass of C on the narrowed C pedicle side-for non-narrowed C pedicle side, the screw was only inserted into C pedicle without extending the fixation to C vertebrae-using a titanium screw-rod (plate) fixation system.

Shunt tube calcification as a late complication of ventriculoperitoneal shunting.

Shunt calcification is a rare complication of ventriculoperitoneal shunting that occurs years later after the initial operation this condition is rarely reported in literature. Two patients with shunt calcifications were described. The first patient was 17-year-old lady who had congenital hydrocephalus and shunted in the early infancy, she was presented recently complaining of itching of the skin along the shunt track and limitation of neck movement.

Composition, Electronic and Magnetic Investigation of the Encapsulated ZnFe2O 4 Nanoparticles in Multiwall Carbon Nanotubes Containing Ni Residuals.

We report investigation on properties of multiwall carbon nanotubes (mCNTs) containing Ni residuals before and after encapsulation of zinc ferrite nanoparticles. The pristine tubes exhibit metallic character with a 0.3 eV reduction in the work function along with ferromagnetic behavior which is attributed to the Ni residuals incorporated during the preparation of tubes.

Brain abscess: Current management.

Brain abscess (BA) is defined as a focal infection within the brain parenchyma, which starts as a localized area of cerebritis, which is subsequently converted into a collection of pus within a well-vascularized capsule. BA must be differentiated from parameningeal infections, including epidural abscess and subdural empyema. The BA is a challenge for the neurosurgeon because it is needed good clinical, pharmacological, and surgical skills for providing good clinical outcomes and prognosis to BA patients.

Unusual surface and edge morphologies, sp2 to sp3 hybridized transformation and electronic damage after Ar+ ion irradiation of few-layer graphene surfaces.

Roughness and defects induced on few-layer graphene (FLG) irradiated by Ar+ ions at different energies were investigated using X-ray photoemission spectroscopy (XPS) and atomic force microscopy techniques. The results provide direct experimental evidence of ripple formation, sp2 to sp3 hybridized carbon transformation, electronic damage, Ar+ implantation, unusual defects and edge reconstructions in FLG, which depend on the irradiation energy. In addition, shadowing effects similar to those found in oblique-angle growth of thin films were seen.