Circularly Polarized Reconfigurable MIMO Antenna for WLAN Applications.

This paper presents a simple design of a two-element antenna with circularly polarized (CP) reconfigurability for multiple-input multiple-output wireless local-area network (WLAN) applications. A MIMO element consists of a reconfigurable feeding network, a CP source, and a 2 × 2 unit-cell metasurface (MS). By controlling the ON/OFF state of PIN diodes, the proposed MIMO system can operate in either right-hand CP (RHCP) or left-hand CP (LHCP) for all ports, or either RHCP or LHCP for each port.

Antibody Response after a Booster COVID-19 Vaccine Mixing in Vietnam.

Background: The booster vaccine is essential for maintaining the antibody against the severe acute respiratory syndrome corona virus 2 (SARS-CoV-2) virus. This study sought to evaluate the antibody response after booster coronavirus disease 2019 (COVID-19) vaccines and compare the immunogenic by different vaccine combination strategies.

Methods: A cross-sectional study in Hanoi, Vietnam was conducted on 679 adult participants who received two doses of vaccines with any combination of AstraZeneca, Pfizer, and Moderna during the COVID-19 vaccination campaign in 2021.

Influence of minimal invasive extracorporeal circuits on dialysis dependent patients undergoing cardiac surgery.

Introduction: Cardiac surgery in patients on chronic renal dialysis is associated with significant morbidity and mortality. Minimally invasive extracorporeal circuits (MiECC) have shown a positive impact on patient outcome in different high-risk populations. This retrospective study compares the outcome of these high-risk patients undergoing heart surgery either with a MiECC or a conventional extracorporeal circulation (CECC).

Minimal invasive approaches for pediatric & congenital heart surgery: safe, reproducible, more cosmetic than through sternotomy, and here to stay.

Minimal invasive approaches through small thoracic incisions for the isolated repair of the most common congenital heart defects have been around for decades. However, the lack of belonging in established surgical training curriculums compared to the traditional median sternotomy, the requirement for more technical expertise and a certain learning curve, has limited their use, being routinely performed only by certain surgeons in specialized centers. More recently, through cumulated and increasingly mediatized shared experience, remote teaching potential through universally accessible surgical videos and simulation, the approach has gained traction and acceptance, and even established itself as the new norm in many centers.

Fabrication of inverse opal molybdenum sulfide and its use as a catalyst for H evolution.

Amorphous molybdenum sulfide (MoS) and crystalline molybdenum disulfide (MoS) are attractive noble-metal-free electrocatalysts for the H evolution reaction from water. Their actual activities depend on the quantity of active sites which are exposed to the electrolyte, which in turn, is influenced by their specific electrochemical surface area. Herein we report on the fabrication of regular inverse opal MoS and MoS films by employing polystyrene nanoparticles with diameters in the range of 30-90 nm as hard templates.

Common Adverse Events from Mixing COVID-19 Vaccine Booster in Hanoi, Vietnam.

Background: Mixing vaccines was proposed as a solution to tackle supply chain interruptions during the crisis of the COVID-19 pandemic. This study aimed to investigate the safety of mixing COVID-19 vaccines for a booster dose in Hanoi, Vietnam.

Method: A cross-sectional study was conducted via a telephone-based interview to identify the adverse events following COVID-19 vaccination among 719 participants in Hanoi, Vietnam.

Photon-counting versus Dual-Source CT of Congenital Heart Defects in Neonates and Infants: Initial Experience.

Background Photon-counting CT (PCCT) has been shown to improve cardiovascular CT imaging in adults. Data in neonates, infants, and young children under the age of 3 years are missing. Purpose To compare image quality and radiation dose of ultrahigh-pitch PCCT with that of ultrahigh-pitch dual-source CT (DSCT) in children suspected of having congenital heart defects.

Exploring the Sub-nanoscale Structure of Cobalt Molybdenum Sulfide and the Role of a Cobalt Promoter in Catalytic Hydrogen Evolution.

Cobalt-promoted molybdenum sulfide (CoMoS) is known as a promising catalyst for H evolution reaction and hydrogen desulfurization reaction. This material exhibits superior catalytic activity as compared to its pristine molybdenum sulfide counterpart. However, revealing the actual structure of cobalt-promoted molybdenum sulfide as well as the plausible contribution of a cobalt promoter is still challenging, especially when the material has an amorphous nature.

Gender Differences, Motor Skills and Physical Fitness Heterogeneity in Adults with Down's Syndrome.

-Adults with Down's syndrome (DS) present lower physical fitness associated with heightened sedentary behaviors and motor skills impairments. Their etiologies and determinants seem to be heterogeneous. This study aims to evaluate physical fitness in adults with DS and to identify specific physical fitness profiles depending on gender and physical activity levels.

Classification of Factors Effect on Sleep in Individuals with Down Syndrome.

Background: Sleep disordered breathing (SDB) is a frequent disorder with serious adverse health consequences in people with Down syndrome (DS). This study aims to evaluate and classify sleep and physical activity (PA) characteristics in adults with DS.

Methods: Forty participants with DS wore an accelerometer for seven consecutive days to measure physical activity and sleep-wake patterns.

Effect of Daily Physical Activity on Sleep Characteristics in Children with Autism Spectrum Disorder.

. Sleep problems have been reported in children with autism spectrum disorder (ASD). One of the methods proposed to improve sleep characteristics is based on physical activity (PA).

Albumin in immunohistochemistry: Foe and friend.

Immunohistochemical procedures constitute a high methodological value in both pathologic diagnostics and research. Staining quality depends on a large variety of interference factors. Primarily, background staining reduces the quality of evaluation by reducing the chromatic discrimination.

Intracellular sequestration of hetero-oligomers formed by wild-type and glaucoma-causing myocilin mutants.

Purpose: To investigate mechanism(s) by which mutations in the olfactomedin domain of myocilin (MYOC), also known as the trabecular meshwork-induced glucocorticoid response (TIGR) gene, cause autosomal dominant open-angle glaucoma, the structure and properties of wild-type (WT) MYOC protein were examined, when expressed alone or simultaneously with the Q368X or K423E disease-associated polypeptides.

Methods: Myocilin was analyzed in human aqueous humor and human trabecular meshwork (HTM) tissues. COS-7 and immortalized human trabecular meshwork (iHTM) cell lines were transfected with expression vectors encoding WT MYOC, mutated, and/or epitope-tagged cDNAs.

TIGR is upregulated in the chronic glial scar in response to central nervous system injury and inhibits neurite outgrowth.

Reactive astrocytes respond to central nervous system (CNS) injury and disease by elaborating a glial scar that is inhibitory to axonal regeneration. To identify genes that may be involved in the astrocytic response to injury, we used differential display polymerase chain reaction and an in vivo model of the CNS glial scar. Expression of the trabecular meshwork inducible glucocorticoid response (TIGR) gene was increased in gliotic tissue compared with the uninjured cerebral cortex.

CD14 expression by activated parenchymal microglia/macrophages and infiltrating monocytes following human traumatic brain injury.

The immune response in the central nervous system (CNS) is under tight control of regulatory mechanisms, resulting in the establishment of immune privilege. CNS injury induces an acute inflammatory reaction, composed mainly of invading leukocytes and activated microglial cells/macrophages. The generation of this robust immune response requires binding of receptors such as CD14, a pattern recognition receptor of the immune system.

In vitro localization of TIGR/MYOC in trabecular meshwork extracellular matrix and binding to fibronectin.

Purpose: To determine whether trabecular meshwork-inducible glucocorticoid response/myocilin (TIGR/MYOC) protein associates with the extracellular matrix (ECM) of human trabecular meshwork (HTM) cells.

Methods: The extracellular localization of TIGR/MYOC was examined by immunofluorescence microscopy in HTM cultures treated with and without dexamethasone and ascorbate and in a transformed HTM cell line, TM-1, transiently transfected with TIGR/MYOC cDNA. Antibodies to TIGR/MYOC, fibronectin, laminin, type IV collagen, or thrombospondin were used to determine the extracellular localization of TIGR/MYOC.