Engineering of the ferrite-based support for enhanced performance of supported Pt, Pd, Ru, and Rh catalysts in hydrogen generation from NaBH hydrolysis.

A series of M/NiCo-Ferrite (M: Pt, Pd, Ru, and Rh) nanoparticles were successfully synthesized, through a facile sol-gel auto-combustion followed by impregnation-reduction approach, as a catalyst for hydrogen generation from hydrolysis of NaBH. All synthesized samples were characterized by XRD, N adsorption-desorption method, ICP-OES, FE-SEM, and EDX analysis. Compared to the other samples, it was observed that the Rh/NiCo-Ferrite sample exhibited higher particle distribution and surface area.

Enhancing hydrogen generation from sodium borohydride hydrolysis and the role of a Co/CuFeO nanocatalyst in a continuous flow system.

In this study, a series of cobalt-based spinel ferrites catalysts, including nickel, cobalt, zinc, and copper ferrites, were synthesized using the sol-gel auto-combustion method followed by a chemical reduction process. These catalysts were employed for accelerating hydrogen generation via the sodium borohydride hydrolysis process. A continuous stirred tank reactor was used to perform catalytic reactor tests.

Improvement of CO Oxidation and CH Combustion by Pd and Pt Partial Substitution on LaMnCuO Perovskite.

LaMnCuO (LMC) as the parent perovskite and Pd- and Pt-doped LaMnCuO catalysts (LMCPd and LMCPt) instead of Cu were synthesized in a new solid-state synthesis technique at a low temperature. Perovskite lattice formation of the LMC catalyst was successfully performed at 600 °C. All perovskites were investigated by X-ray diffraction, HRTEM, O-TPD, H-TPR, BET, and XPS analyses.

The effect of retroperitonealization of ureteroileal anastomosis on perioperative complications of radical cystectomy with ileal conduit urinary diversion.

Background: Radical cystectomy (RC) has been considered the standard management of muscle-invasive bladder cancer. Despite the improvements in surgical techniques and perioperative care, RC is still associated with high perioperative morbidity and mortality.

Objective: This study aims to evaluate the effect of retroperitonealization of ureteroileal anastomosis on perioperative complications of RC with ileal conduit urinary diversion.

Isotherm and selectivity study of Ni(II) removal using natural and acid-activated nanobentonites.

In this research, natural bentonite and its acid-activated forms were employed as adsorbents for the adsorption of Ni ions from wastewater. Natural bentonite was activated with 2 M sulfuric acid, 4.5 h and 95 °C (the best acid-activated sample with the highest adsorption capacity) and the other 6 M sulfuric acid, 7.

Defect engineering of oxide perovskites for catalysis and energy storage: synthesis of chemistry and materials science.

Oxide perovskites have emerged as an important class of materials with important applications in many technological areas, particularly thermocatalysis, electrocatalysis, photocatalysis, and energy storage. However, their implementation faces numerous challenges that are familiar to the chemist and materials scientist. The present work surveys the state-of-the-art by integrating these two viewpoints, focusing on the critical role that defect engineering plays in the design, fabrication, modification, and application of these materials.

Recovery scenario and immunity in COVID-19 disease: A new strategy to predict the potential of reinfection.

Background: The recent ongoing outbreak of coronavirus disease 2019 (COVID-19), still is an unsolved problem with a growing rate of infected cases and mortality worldwide. The novel coronavirus, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), is targeting the angiotensin-converting enzyme 2 (ACE2) receptor and mostly causes a respiratory illness. Although acquired and resistance immunity is one of the most important aspects of alleviating the trend of the current pandemic; however, there is still a big gap of knowledge regarding the infection process, immunopathogenesis, recovery, and reinfection.

Mechanochemical synthesis of ZnO.AlO powders with various Zn/Al molar ratios and their applications in reverse water-gas shift reaction.

ZnO.AlO powders with various Zn/Al molar ratios were prepared via a solid-state reaction using a mechanochemical synthesis method, and the selected powder with a ZnO/AlO molar ratio of 1 was used as support for the preparation of 15% Ni/ZnO.AlO catalyst.

Preparation of the Mn/Co mixed oxide catalysts for low-temperature CO oxidation reaction.

The Mn/Co mixed powders with various Mn/Co molar ratios were prepared by the coprecipitation method and used in low-temperature CO oxidation. The physicochemical characteristics of these powders were characterized using the Brunauer-Emmett-Teller (BET), X-ray diffraction (XRD), temperature-programmed reduction (TPR), and scanning electron microscopy (SEM) analyses. The results demonstrated that the Mn/Co molar ratio significantly affected both the textural and catalytic properties and the sample with a Mn/Co = 1:1 possessed a BET area of 123.

Mass Rearing Optimization of Cotesia vestalis (Hymenoptera: Braconidae) Based on the Host and Parasitoid Densities.

The present study aimed to explore some simple ways to optimize the mass rearing of Cotesia vestalis (Haliday) (Hymenoptera: Braconidae), one of the most important biocontrol agents of the diamondback moth, Plutella xylostella (L.) (Lepidoptera: Plutellidae). The effects of host and parasitoid initial densities on the quantity and quality of produced wasps were investigated.

Ultrasound-assisted hydrothermal method for the preparation of the M-FeO-CuO (M: Mn, Ag, Co) mixed oxides nanocatalysts for low-temperature CO oxidation.

In this article, M-FeO-CuO (M: Mn, Ag and Co) mixed oxides nanocatalysts were synthesized by a novel ultrasound-assisted hydrothermal method and the effect of irradiation power and time on the physicochemical and catalytic properties in oxidation of carbon monoxide at low temperature was investigated. The synthesized samples were studied using XRD, BET, TPR and SEM techniques. The results indicated that the incorporation of Mn into Cu-Fe catalyst had a significant influence on the catalytic properties and the catalyst promoted with 10 wt% Mn exhibited the full conversion of CO at 100 °C.

Preparation and characterization of curcumin-loaded polymeric nanomicelles to interference with amyloidogenesis through glycation method.

Amyloid fibrils, including β-amyloid (Aβ) fibrils, are protein aggregates that form under certain conditions, associated with neurodegeneration that interfere with neural synaptic transmission resulting in some neural disorders, such as Alzheimer's disease. The aim of this study is to inhibit amyloidogenesis by using preparatory polymeric nanomicelles as therapeutic agents and also as nanocarriers for curcumin to target Aβ fibrils through the glycation method of bovine serum albumin (BSA) in the presence of phosphate-buffered saline. Polymeric nanomicelles were prepared from phosphatidylethanolamine-distearoyl methoxypolyethylene glycol conjugates in the presence and absence of curcumin and then the morphological and structural characteristics of the nanomicelles were characterized in detail.

Improvements in the Rearing of the Tachinid Parasitoid Exorista larvarum (Diptera: Tachinidae): Influence of Adult Food on Female Longevity and Reproduction Capacity.

Exorista larvarum (L.), a polyphagous gregarious larval parasitoid of lepidopterans, can be mass produced both in vivo, using the greater wax moth Galleria mellonella (L.) (Lepidoptera: Pyralidae) as a factitious host, and in vitro, on artificial media composed of crude components.

The effect of platelet-rich plasma injection on post-internal urethrotomy stricture recurrence.

Purpose: Local injection of platelet-rich plasma (PRP) is postulated to work by delivering growth factors and cytokines that recruit healer cells and enhance recovery process at the injection site. As new scar formation leads to stricture recurrence after internal urethrotomy, we proposed to improve post-internal urethrotomy stricture recurrence rate by injecting local submucosal PRP at the time of urethrotomy.

Methods: From July 2015 to June 2018, 87 male patients with symptomatic bulbar urethral stricture (diagnosed by retrograde urethrography) randomized into two groups of internal urethrotomy and submucosal normal saline injection (control group, 43 patients), and internal urethrotomy with submucosal autologous platelet-rich plasma injection (PRP injection group, 44 patients).

Highly Selective Reduction of Carbon Dioxide to Methane on Novel Mesoporous Rh Catalysts.

Mesoporous metals with high surface area hold promise for a variety of catalytic applications, especially for the reduction of CO to value-added products. This study has used a novel mesoporous rhodium (Rh) nanoparticles, which were recently developed via a simple wet chemical reduction approach ( Nat. Commun.

Ordered meso- and macroporous perovskite oxide catalysts for emerging applications.

This feature article summarizes the recent progress in porous perovskite oxides as advanced catalysts for both energy conversion applications and various heterogeneous reactions. Recently, research has been focused on specifically designing porous perovskite materials so that large surface areas can be harnessed and surface properties can be improved. Numerous potential applications of porous perovskites have been investigated, including heterogeneous catalysis and air battery applications that rely on interactions and/or reactions of other components with porous perovskites.

Combination therapy with omega-3 fatty acids plus tamsulocin and finasteride in the treatment of men with lower urinary tract symptoms (LUTS) and benign prostatic hyperplasia (BPH).

Purpose: Inflammation and Cyclooxygenase-2 (COX-2) as a part of it are common in BPH specimens and may play a role in the pathogenesis of the disease through cytokines that promote cell growth or lead to smooth muscle contraction. The aim of this study is to analyze whether combination therapy with omega-3 fatty acids, which have anti-inflammatory and COX-2 inhibitory effects, and tamsulocin plus finasteride offers an advantage compared to tamsulocin plus finasteride therapy in patients with BPH.

Materials And Methods: This is a single-center blinded clinical trial.

A novel route for electrosynthesis of CuCr(2)O(4) nanocomposite with p-type conductive polymer as a high performance material for electrochemical supercapacitors.

In this work, supercapacitive performance of polypyrrole copper chromate nano particles (Ppy/CuCrO NPs) was studied. CuCrO NPs with the average size of 20nm were synthesized simply by hydrothermal method and the composite electrodes were then electropolymerized on the surface of glassy carbon electrode. Common surface analysis techniques such as scanning electron microscopy (SEM), transmission electron microscopy(TEM) and Fourier transform infrared (FTIR) were used to study the morphology and structure of the composite.

Ultrasound assisted co-precipitation synthesis and catalytic performance of mesoporous nanocrystalline NiO-AlO powders.

Mesoporous nanocrystalline NiO-AlO powders with high surface area were synthesized via ultrasound assisted co-precipitation method and the potential of the selected samples as catalyst was investigated in dry reforming reaction for preparation of synthesis gas. The prepared samples were characterized by N adsorption (BET), X-ray diffraction (XRD), Temperature programmed reduction and oxidation (TPR, TPO) and scanning electron microscopy (SEM) techniques. The effects of pH, power of ultrasound irradiation, aging time and calcination temperature on the textural properties of the catalysts were studied.

Curcumin mitigates the fibrillation of human serum albumin and diminishes the formation of reactive oxygen species.

The formation of amyloid fibrils are thought to contribute to pathogenesis of many amyloids associated human diseases. Here the impact of curcumin on amyloid formation of human serum albumin (HSA) was studied. Incubation of HSA at 68°C under physiologic pH led to amyloid fibril formation.

Purification and characterization of a novel extracellular halophilic and organic solvent-tolerant amylopullulanase from the haloarchaeon, Halorubrum sp. strain Ha25.

A halophilic archaeon, Halorubrum sp. strain Ha25, produced extracellular halophilic organic solvent-tolerant amylopullulanase. The maximum enzyme production was at high salt concentration, 3-4 M NaCl.