Synthesis, characterization and evaluation of new alternative ruthenium complex for dye sensitized solar cells.

For first time, new innovative ruthenium N3-Dye anchored with selenium (Se) and N3 dye anchored with sulphur atoms were synthesized in a good yield. Dyes are applied and evaluated in performance of dye sensitized solar cell. N3-Se dye showed superior photochemical& electrochemical behavior and high rate electron transfer across anode surface than N3-S dye.

Exploring rare locations of hydatid disease: a retrospective case series.

Introduction: Hydatid disease, endemic in Mediterranean countries, primarily affects the liver, but can manifest in diverse organs. Non-hepatic and non-pulmonary cysts often pose diagnostic challenges. This study examines patients with hydatid cysts in atypical locations.

A rare association of adenocarcinoma of the small bowels and coeliac disease: A case report.

Introduction: Coeliac disease is a long-term autoimmune disorder that primarily affects the small intestine. It is due to an adverse reaction to gluten. The treatment is based on a strict gluten-free diet.

Correction: Controlling barrier height and spectral responsivity of p-i-n based GeSn photodetectors arsenic incorporation.

[This corrects the article DOI: 10.1039/D3RA00805C.].

Controlling barrier height and spectral responsivity of p-i-n based GeSn photodetectors arsenic incorporation.

GeSn compounds have made many interesting contributions in photodetectors (PDs) over the last ten years, as they have a detection limit in the NIR and mid-IR region. Sn incorporation in Ge alters the cut off wavelength. In the present article, p-i-n structures based on GeSn junctions were fabricated to serve as PDs.

Amylolytic and antibacterial activity of filamentous fungi isolated from the rhizosphere of different plants grown in the Tamanghasset region.

In the present study, we were interested in studying the amylolytic and antibacterial activity of some filamentous fungi isolated from the rhizosphere of cultivated plants in Tamanghasset region. Consequently, 11 pure strains belonging to the different fungal genera were isolated and . Positive result of amylolytic activity was revealed on all the isolated strains, with important hydrolysis zones of 54.

Graphene Oxide/Polyvinyl Alcohol-Formaldehyde Composite Loaded by Pb Ions: Structure and Electrochemical Performance.

An immobilization of graphene oxide (GO) into a matrix of polyvinyl formaldehyde (PVF) foam as an eco-friendly, low cost, superior, and easily recovered sorbent of Pb ions from an aqueous solution is described. The relationships between the structure and electrochemical properties of PVF/GO composite with implanted Pb ions are discussed for the first time. The number of alcohol groups decreased by 41% and 63% for PVF/GO and the PVF/GO/Pb composite, respectively, compared to pure PVF.

Garlic peel as promising low-cost support for the cobalt nanocatalyst; synthesis and catalytic studies.

The development of cost-effective and applied catalysts for organic pollutants degradation is the cornerstone for the future valorizations of these hazardous wastes. Garlic peel was employed as solid support for the assembly of cobalt nanoparticles and was further applied for the catalytic degradation of 4-nitrophenol, bromophenol blue, and a mixture of both. A Cobalt@garlic peel nanocomposite with the morphology of semi-spherical and randomly distributed nanoparticles was prepared without the aid of any hazardous chemicals.

Crystal Growth of Cubic and Hexagonal GaN Bulk Alloys and Their Thermal-Vacuum-Evaporated Nano-Thin Films.

In this study, we investigate a novel simple methodology to synthesize gallium nitride nanoparticles (GaN) that could be used as an active layer in light-emitting diode (LED) devices by combining the crystal growth technique with thermal vacuum evaporation. The characterizations of structural and optical properties are carried out with different techniques to investigate the main featured properties of GaN bulk alloys and their thin films. Field emission scanning electron microscopy (FESEM) delivered images in bulk structures that show micro rods with an average diameter of 0.

Acute cholecystitis due to a gall bladder torsion.

Introduction: Gallbladder torsion is an unusual cause of an acute abdomen that can be mortal. It is presenting in variable ways, but the most common is symptomatology similar to acute cholecystitis. Clinical manifestations and imaging features can facilitate diagnosis, and treatment is detorsion with cholecystectomy.

Molecularly Imprinted Electrochemical Sensor-Based FeO@MWCNTs for Ivabradine Drug Determination in Pharmaceutical Formulation, Serum, and Urine Samples.

Ivabradine hydrochloride (IVR) is a medically important drug because of its ability to lower the heart rate. Techniques reported for IVR determination were expensive, laborious, besides being of poor selectivity. In this study, iron oxide @ carbon nanotube (FeO@MWCNTs) nanocomposite and molecularly imprinted polymer (MIP) were synthesized and used in the fabrication of carbon paste electrodes (CPEs) for the potentiometric detection of IVR in biological and pharmaceutical samples.

t-Butyl calixarene/FeO@MWCNTs composite-based potentiometric sensor for determination of ivabradine hydrochloride in pharmaceutical formulations.

Ivabradine hydrochloride (IVB) has shown high medical importance as it is a medication for lowering the heart rate for the symptomatic chronic heart failure and symptomatic management of stable angina pectoralis. The high dose of IVB may cause severe and prolonged bradycardia, uncontrolled blood pressure, headache, and blurred vision. In this study, a highly sensitive carbon-paste electrode (CPEs) was constructed for the potentiometric determination of IVB in pharmaceutical formulations.

Tailored CNTs Buckypaper Membranes for the Removal of Humic Acid and Separation of Oil-in-Water Emulsions.

Carbon nanotubes (CNTs) are a robust material and proven as a promising candidate for a wide range of electronic, optoelectronic and environmental applications. In this work, two different methods were utilized for the preparation of CNTs exhibiting different aspect ratios via chemical vapor deposition (CVD). The as-prepared CNTs were analyzed using scanning electron microscopy (SEM), transmission electron microscopy (TEM), Nadsorption isotherms, thermogravimetric analysis and Raman spectroscopy in order to investigate their morphological and structural properties.

Fabrication Of Gold Nanoparticles In Absence Of Surfactant As In Vitro Carrier Of Plasmid DNA.

Purpose: This work aimed to synthesize surfactant-free AuNPs for targeted delivery of plasmid DNA encoded p53 gene and to avoid conventional production method of Gold nanoparticles (AuNPs) which may adversely affect the final shape, diversity, and size due to accumulation of the formulated surfactant - gold complex to the surface.

Methods: The AuNPs were fabricated using seeded-growth method with L-Cystine methyl ester hydrochloride as capping agent, then loaded with plasmid DNA encoded p53 gene. The resultant AuNPs and AuNPs-p53 complex were evaluated for physical characteristics and morphology.

Wet chemistry route for the decoration of carbon nanotubes with iron oxide nanoparticles for gas sensing.

In this work, we investigated the parameters for decorating multiwalled carbon nanotubes with iron oxide nanoparticles using a new, inexpensive approach based on wet chemistry. The effect of process parameters such as the solvent used, the amount of iron salt or the calcination time on the morphology, decoration density and nanocluster size were studied. With the proposed approach, the decoration density can be adjusted by selecting the appropriate ratio of carbon nanotubes/iron salt, while nanoparticle size can be modulated by controlling the calcination period.

Structural and Magnetic Properties of Transition-Metal-Doped Zn 1-x Fe x O.

The ability to produce high-quality single-phase diluted magnetic semiconductors (DMS) is the driving factor to study DMS for spintronics applications. Fe-doped ZnO was synthesized by using a low-temperature co-precipitation technique producing Zn 1-x Fe x O nanoparticles (x= 0, 0.02, 0.

Emergence of SHV-12 extended spectrum beta-lactamase among clinical isolates of Enterobacter cloacae in Tunisia.

A collection of seven multidrug-resistant clinical isolates of Enterobacter cloacae with reduced susceptibility to ceftazidime and cefepime recovered from 2009 to 2010 at the University Hospital of Mahdia, Tunisia, was analysed. PCR analysis and sequencing demonstrated that all study isolates harbored SHV-12 β-lactamase that was transferred by conjugation. Characterization of the regions surrounding the bla(SHV-12) showed that this gene was flanked by two IS26 elements.

[Cholangitis revealing an intrahepatic Osler's disease].

Osler Weber Rendu Disease is an hereditary haemorrhagic télangectasia habitually revealed by reccurent bleeding (epistaxis). Hepatic involvement in Osler disease is found in 8 to 31%, manifested by cholestasis. We report an original observation of a cholangitis revealing Osler disease.

[Molar pregnancy. Retrospective study of 60 cases in Tunisia].

To identify the epidemiologic, clinical end therapeutic particularities of molar pregnancies in Tunisia. A retrospective study of 60 cases of molar pregnancy Diagnosis of MP was base on elevated urine HCG level and/or histologic examination of uterine revision done for all patients. The incidence of MP is 1/793(60/47624) pregnancies.