An estimated photocurrent controlling the inductance current of DC-DC converter for rapid MPPT pursuit with less oscillations under sudden changes in the PV chain.

This paper focuses on simple technique from conventional techniques for the rapid maximum power point (MPP) pursuit with a less oscillations under sudden changes. In investigations, the controllability of the conventional boost converter model shows that the converter can be controlled from the current of its inductance (inductor). To get reference current, a conventional technique known as method of short-circuit current has been transformed to clearly establish with supporting evidence an estimated photocurrent.

Hydroxyapatite nano-pillars on TI-6Al-4V: Enhancements in cell spreading and proliferation during cell/surface integration.

Despite the attractive combinations of cell/surface interactions, biocompatibility, and good mechanical properties of Ti-6Al-4V, there is still a need to enhance the early stages of cell/surface integration that are associated with the implantation of biomedical devices into the human body. This paper presents a novel, easy and reproducible method of nanoscale and nanostructured hydroxyapatite (HA) coatings on Ti-6Al-4V. The resulting nanoscale coatings/nanostructures are characterized using a combination of Raman spectroscopy, scanning electron microscopy equipped with energy dispersive x-ray spectroscopy.

Exploring Carbon Monoxide and Carbon Dioxide Adsorption on (5,5) Aluminum Nitride Nanotubes for Enhanced Sensor Applications: A DFT Study.

This study examined the sensitivity of single-walled (5,5) aluminium nitride nanotubes ((5,5) AlNNTs) to carbon monoxide (CO) and carbon dioxide (CO) gas molecules by performing DFT calculations using a hybrid functional, specifically, B3LYP (Becke's three-parameter, Lee-Yang-Parr) exchange-correlation functional at a 6-31G* basis set. This research investigates the adsorption behavior of CO and CO molecules on pristine and silicon-doped aluminum nitride nanotubes (AlNNTs) and examines their implications for sensor applications. The study assesses each system's adsorption energy, sensing potential, and recovery time to gain insights into their binding strength and practical viability.

Chemical profiling by UHPLC-Q-TOF-HRESI-MS/MS and antibacterial properties of (Fabaceae) constituents.

A rapid untargeted UHPLC-Q-TOF-ESI-MS/MS-Based metabolomic profiling of the medicinal plant was performed. A total of 18 metabolites were detected, of which 10 could not be identified. Based on this result, an extensive chemical investigation of the CHCl-MeOH (1:1) extract of this plant was carried out, leading to the isolation of a new ceramide, named entadamide (), together with nine known compounds: monomethyl kolavate (), 24-hydroxytormentic acid () chondrillasterol (), 3---D glucopyranosylstigmasterol (), 3---D glucopyranosylsitosterol (), quercetin 3'-methylether (), 2,3-dihydroxypropyl icosanoate (), 2,3-dihydroxy-propyl 23-hydroxytricosanoate () and 2,3-dihydroxy-propyl 24-hydroxytetracosanoate ().

Density Functional Theory-Based Studies Predict Carbon Nanotubes as Effective Mycolactone Inhibitors.

Fullerenes, boron nitride nanotubes (BNNTs), and carbon nanotubes (CNTs) have all been extensively explored for biomedical purposes. This work describes the use of BNNTs and CNTs as mycolactone inhibitors. Density functional theory (DFT) has been used to investigate the chemical properties and interaction mechanisms of mycolactone with armchair BNNTs (5,5) and armchair CNTs (5,5).

Photothermally-Heated Superparamagnetic Polymeric Nanocomposite Implants for Interstitial Thermotherapy.

Photothermally-heated polymer-based superparamagnetic nanocomposite (SNC) implants have the potential to overcome limitations of the conventional inductively-heated ferromagnetic metallic alloy implants for interstitial thermotherapy (IT). This paper presents an assessment of a model SNC-poly-dimethylsiloxane (PDMS) and Fe3O4 nanoparticles (MNP)-implant for IT. First, we performed structural and optical characterization of the commercially purchased MNPs, which were added to the PDMS to prepare the SNCs (MNP weight fraction =10 wt.

Antimicrobial evaluation of polytetrafluoroethylene used as part of temporary restorations: An ex vivo study.

The use of polytetrafluoroethylene (PTFE) tape as the base layer of temporary restorations had gained popularity mainly due to the ease of manipulation. The aim of this study was to assess whether this method changes the potential for bacterial growth and leakage of temporary restorations. The direct contact test and live/dead fluorescent staining were used for comparing Enterococcus faecalis growth and biofilm formation on PTFE, composite, intermediate restorative material (IRM) and Coltosol F.

Enterococcus faecalis sustained infection induces macrophage pro-resolution polarization.

Aim: To investigate macrophage function in the presence of sustained infection with Enterococcus faecalis, a prevalent root canal resident in asymptomatic apical periodontitis.

Methodology: The human monocyte cell line (THP-1) was differentiated into macrophages by exposure to phorbol myristate acetate (PMA), and the cultures were inoculated with E. faecalis for up to 48 h.

Comparative Study of Phosgene Gas Sensing Using Carbon and Boron Nitride Nanomaterials-A DFT Approach.

Phosgene (COCl), a valuable industrial compound, maybe a public safety and health risk due to potential abuse and possible accidental spillage. Conventional techniques suffer from issues related to procedural complexity and sensitivity. Therefore, there is a need for the development of simple and highly sensitive techniques that overcome these challenges.

Lumen and mucosa-associated from the intestinal tract of organ donors.

Knowledge of the intra-individual spatial and regional distribution of intestinal microbial populations is essential to understand gut host-microbial interactions. In this study, we performed a compositional analysis of luminal and mucosal samples from the small and large intestine of four organ donors by 16S rRNA amplicon sequencing and high-throughput quantitative polymerase chain reaction. Since the human microbiota is subject to selection pressure at lower taxonomic levels, we isolated over 400 bacterial strains and investigated strain-level variation of 11 from different intestinal regions.

Stacking Interactions of Poly Para-Phenylene Vinylene Oligomers with Graphene and Single-Walled Carbon Nanotubes: A Molecular Dynamics Approach.

This study is meant to address the understanding of the interactions between poly para-phenylene vinylene (PPV) oligomers, graphene and single-walled carbon nanotubes (SWCNT). To this end, the binding energies of the PPV oligomers with graphene and SWCNTs were investigated. Calculations are performed and the parameters related to van der Waal vdW interactions are discussed to achieve and confirm the crystallization of oligomers of PPV into herringbone (HB) structure arrangement, which is known to be the most stable conformation at 300 K.

Development and Characterization of Clay-Nanocomposites for Water Purification.

In this work we propose a facile method of preparing cost-effective clay-metaloxide/metal (CuO/Ag and ZnO/Ag) composite pellets for an efficient water purification technique. Clay, with intrinsic antibacterial activity, served as a membrane support for different metaloxide/Ag nanoparticles (NPs) concentrations (2.5, 5 and 10 wt.

Daucosterol from Crateva adansonii DC (Capparaceae) reduces 7,12-dimethylbenz(a)anthracene-induced mammary tumors in Wistar rats.

This study aimed to evaluate the in vivo anticancer effects of daucosterol which was earlier reported to possess in vitro anticancer effects. Breast tumor was induced in 30 rats using the environmental carcinogen 7,12-dimethylbenz(a)anthracene (DMBA) while 6 control rats received olive oil (NOR). Animals with palpable tumors were randomized into five groups (n = 6) each as follows: negative control group treated with the vehicle (DMBA); positive control group treated with 5 mg/kg BW doxorubicin (DOXO + DMBA); three groups treated with daucosterol at doses of 2.

Outwitting an Old Neglected Nemesis: A Review on Leveraging Integrated Data-Driven Approaches to Aid in Unraveling of Leishmanicides of Therapeutic Potential.

The global prevalence of leishmaniasis has increased with skyrocketed mortality in the past decade. The causative agent of leishmaniasis is Leishmania species, which infects populations in almost all the continents. Prevailing treatment regimens are consistently inefficient with reported side effects, toxicity and drug resistance.

New 2D Structural Materials: Carbon-Gallium Nitride (CC-GaN) and Boron-Gallium Nitride (BN-GaN) Heterostructures-Materials Design Through Density Functional Theory.

New class of ternary nanohetrostructures have been proposed by mixing 2D gallium nitride (GaN) with graphene and 2D hexagonal boron nitride (BN) with an aim towards desgining innovative 2D materials for applications in electronics and other industries. The structural stability and electronic properties of these nanoheterostructures have been analyzed using first-principles based calculations done in the framework of density functional theory. Different structure patterns have been analyzed to identify the most stable structures.

AgCO-halloysite nanotubes composite with enhanced removal efficiency for water soluble dyes.

The release of water soluble dyes into the environment is an utmost concern in many countries. This paper presents the effects of AgCO-halloysite composites on the efficient removal of water soluble dyes. In this study, NaHCO solution was added dropwisely to halloysite nanotubes (HNTs) dispersed in aqueous AgNO to form AgCO-HNTs composite.

Effect of fractioning on antibacterial activity of n-butanol fraction from Enantia chlorantha stem bark methanol extract.

Background: Enantia chlorantha is a plant belonging to Annonaceae Family. The Barks and leaves are used traditionally to treat infectious diseases. Earlier studies highlighted the antibacterial activity of stem barks methanol extract.

Modified halloysite nanoclay as a vehicle for sustained drug delivery.

This paper presents the effect of modified halloysite nanotubes on the sustained drug release mechanisms of sodium salicylate. Acid treatment and composite polymer-halloysite modification techniques were adopted in this study. After each modification, sodium salicylate drug was loaded, and in vitro release properties were evaluated and compared with the raw unmodified halloysite nanotubes.

Systemic administration of mesenchymal stem cells combined with parathyroid hormone therapy synergistically regenerates multiple rib fractures.

Background: A devastating condition that leads to trauma-related morbidity, multiple rib fractures, remain a serious unmet clinical need. Systemic administration of mesenchymal stem cells (MSCs) has been shown to regenerate various tissues. We hypothesized that parathyroid hormone (PTH) therapy would enhance MSC homing and differentiation, ultimately leading to bone formation that would bridge rib fractures.

Chemical composition, in vitro antioxidant and anti-inflammatory properties of essential oils of four dietary and medicinal plants from Cameroon.

Background: In the Cameroonian traditional medicine, plants of the Capparidaceae, Euphorbiaceae and Liliaceae families are used to treat several metabolic diseases. These plants are rich in various compounds belonging to the glucosinolates and thiosulfinates family. Till date, very little studies have been done aiming at assessing the antioxidant and inflammatory properties of the essential oils (EOs) of these plants.

Unique factors that place older Hispanic women at risk for HIV: intimate partner violence, machismo, and marianismo.

Hispanic women who are 50 years of age and older have been shown to be at increased risk of acquiring HIV infection due to age and culturally related issues. The purpose of our study was to investigate factors that increase HIV risk among older Hispanic women (OHW) as a basis for development or adaptation of an age and culturally tailored intervention designed to prevent HIV-related risk behaviors. We used a qualitative descriptive approach.

Characterization of anamnestic T-cell responses induced by conventional vaccines against contagious bovine pleuropneumonia.

A better understanding of how T1 vaccination confers immunity would facilitate the rational design of improved vaccines against contagious bovine pleuropneumonia (CBPP). We show here that mycoplasmas-induced recall proliferation and IFN-γ responses are detected in cattle that received multiple shots of T1 vaccines. These anamnestic responses were under the strict control of CD4(+) T lymphocytes.

[HIV PREVENTION FOR HISPANIC WOMEN FIFTY YEARS AND OLDER.].

Introduction: Hispanic women aged 50 and over (OHW) are a minority in the U.S. at high risk of acquiring HIV and the least studied group of population in relation to health, social characteristics and sexual behavior.

Variable Number Tandem Repeat (VNTR) analysis reveals genetic diversity within Mycoplasma mycoides mycoides small colony isolates from Nigeria.

A Variable Number Tandem Repeat (VNTR) analysis was conducted on thirteen (13) M. mycoides mycoides Small Colony isolates from Nigeria using Tandem Repeat (TR) 34 which is a predicted lipoprotein located within the hypothetical protein MAG6170. The analysis revealed diversity within the M.