Aliphatic substrates-mediated unique rapid room temperature synthesis of carbon quantum dots for fenofibrate versatile analysis.

Background: The current synthetic strategies for carbon dots (CDs) are usually time-consuming, rely on complicated processes, and need high temperatures and energy. Recent studies have successfully synthesized CDs at room temperature. Unfortunately, most CDs synthesized at room temperature are obtained under harsh reaction conditions, prepared using aromatic precursors, or need a long time to generate.

Adoption of self-exothermic reaction for synthesis of multifunctional carbon quantum dots: Applications to vincristine sensing and cell imaging.

This work introduces an extremely easy method for preparing luminescent carbon dots (CDs) at ambient temperature using 1,2-naphthoquinone sulphonate and ethylenediamine as precursors via self-exothermic reaction without energy input. The as-obtained CDs have a high quantum yield (34.1 %), a production yield of 21.

Rapid microwave synthesis of N and S dual-doped carbon quantum dots for natamycin determination based on fluorescence switch-off assay.

Green, one-pot, quick, and easily synthesized nitrogen and sulfur co-doped carbon quantum dots (N,S-CDs) were obtained from cheap and readily available chemicals (sucrose, urea, and thiourea) using a microwave-assisted approach in about 4 min and utilized as a turn-off fluorescent sensor for estimation of natamycin (NAT). First, the effect of N and S doping on the microwave-synthesized CDs' quantum yield was carefully studied. CDs derived from sucrose alone failed to produce a high quantum yield; then, to increase the quantum yield, doping with heteroatoms was carried out using either urea or thiourea.

Outcomes of bio-esthetic single implant-supported restorations after peri-implant soft tissue conditioning with two prosthetic techniques: A 1-year randomized clinical trial.

Statement Of Problem: Providing a definitive restoration with an emergence profile matching that of the contralateral or extracted tooth should result in an esthetic peri-implant soft tissue contour. Whether a custom healing abutment improves the outcome of a bio-copied definitive restoration compared with a stock abutment is unclear.

Purpose: The purpose of this 1-year randomized clinical trial was to evaluate the peri-implant soft and hard tissues related to bio-esthetic single implant-supported restorations having a contralateral tooth-matching restorative emergence profile after peri-implant soft tissue conditioning with either custom or stock healing abutment for patients indicated for immediate implant placement.

Highly sensitive spectrofluorimetric method for the determination of the genotoxic methylglyoxal in glycerol-containing pharmaceuticals and dietary supplements.

Methylglyoxal (MGO) is a genotoxic α-dicarbonyl compound. Recently, it was found to be formed in glycerol preparations during storage through auto-oxidation. A simple fluorimetric determination of the carcinogenic degradation product of glycerol, MGO, was developed and validated.

CAD-CAM custom healing abutments: A dental technique.

Custom healing abutments are important in establishing optimal esthetics for prosthesis-driven, implant-supported restorations. This report demonstrates a technique for constructing a custom healing abutment with computer-aided design and computer-aided manufacturing to save chairside time and provide predictable results.

Spectrofluorimetric determination of selected genotoxic impurities in pharmaceutical raw materials and final products.

A green spectrofluorimetric method was introduced for the determination of selected genotoxic impurities; 2-aminopyridine and 3-aminopyridine in different pharmaceutical raw materials and dosage forms. The method relied on the native fluorescence of these impurities in acidic medium. The experimental conditions were carefully studied and optimized, and the method was validated according to International Council on Harmonisation (ICH) guidelines.

Adversarial Resolution Enhancement for Electrical Capacitance Tomography Image Reconstruction.

High-quality image reconstruction is essential for many electrical capacitance tomography (CT) applications. Raw capacitance measurements are used in the literature to generate low-resolution images. However, such low-resolution images are not sufficient for proper functionality of most systems.

Heuristic Greedy Scheduling of Electric Vehicles in Vehicle-to-Grid Microgrid Owned Aggregators.

In on-grid microgrids, electric vehicles (EVs) have to be efficiently scheduled for cost-effective electricity consumption and network operation. The stochastic nature of the involved parameters along with their large number and correlations make such scheduling a challenging task. This paper aims at identifying pertinent innovative solutions for reducing the relevant total costs of the on-grid EVs within hybrid microgrids.

Enhancing physico-mechanical and antibacterial properties of natural rubber using synthesized Ag-SiO nanoparticles.

The incorporation of the prepared Ag-SiO core-shell particles in natural rubber matrix was investigated on antibacterial and mechanical properties of resulting composites. Significant antibacterial effect against S. aureus (Gram positive) and P.

Primary PCI versus pharmacoinvasive strategy for ST elevation myocardial infarction.

Background: The rationale for pharmacoinvasive strategy is that many patients have a persistent reduction in flow in the infarct-related artery. The aim of the present study is to assess safety and efficacy of pharmacoinvasive strategy using streptokinase compared to primary PCI and ischemia driven PCI on degree of myocardial salvage and outcomes.

Methods And Results: Sixty patients with 1st attack of acute STEMI within 12 h were randomized to 4 groups: primary PCI for patients presented to PPCI-capable centers (group I), transfer to PCI if presented to non-PCI capable center (group II), pharmacoinvasive strategy "Streptokinase followed by PCI within 3-24 h" (group III) and fibrinolytic followed by ischemia driven PCI (group IV).

Internal versus external ureteric stents for uretero-ileal anastomosis after laparoscopic radical cystectomy with orthotopic neobladder: A prospective comparative study.

Objective: To prospectively compare the use of external ureteric stents with internal JJ stenting of the uretero-ileal anastomosis in patients undergoing laparoscopic radical cystectomy (LRC) with a Y-shaped ileal orthotopic neobladder (ON).

Patients And Methods: The study included 69 patients undergoing LRC with ON. Patients were grouped according to the type of uretero-ileal stents used.

Holmium laser enucleation of the prostate: initial report of the first 230 Egyptian cases performed in a single center.

Objectives: To report our experience with the first 230 cases of holmium laser enucleation of the prostate (HoLEP) performed in a single center.

Methods: A total of 230 cases of HoLEP were performed between June 2007 and June 2008. Mean age of patients was 69.

Antegrade ureteral stenting during laparoscopic dismembered pyeloplasty: intraoperative findings and long-term outcome.

Objective: The objective of this study was to compare the results of antegrade (AG) ureteral stenting with retrograde (RG) stenting during laparoscopic dismembered pyeloplasty.

Materials And Methods: Between October 2003 and April 2007, a case series of 47 laparoscopic dismembered pyeloplasties were done by three surgeons of equal expertise in laparoscopic surgery, where the Double-J ureteral stent was placed by the RG method (RG stenting group) in 15 cases and by the AG method (AG stenting group) in 32 patients. Intraoperative findings and operative data were recorded.

Laparoscopic augmentation ileocystoplasty: results and outcome.

Background: Routine use of laparoscopic augmentation ileocystoplasty has not yet been established.

Objectives: To assess the outcome of laparoscopic augmentation ileocystoplasty.

Design, Setting, And Participants: Twenty-three patients underwent laparoscopic augmentation ileocystoplasty for hypocompliant bladder.

Laparoscopic vesical diverticulectomy.

Purpose: We report our initial experience with 13 cases of laparoscopic vesical diverticulectomy done via an extravesical approach between November 2002 and October 2004.

Patients And Methods: All patients were male, with a mean age of 53 years and a mean body mass index of 26.2 kg/m2.

Laparoscopic transperitoneal ureterolithotomy.

Purpose: To present our experience with laparoscopic ureterolithotomy as a potential alternative to open ureterolithotomy.

Patients And Methods: Between October 2003 and October 2005, a total of 27 laparoscopic ureterolithotomies were performed in 25 patients. The mean age of the patients was 39.

Gastrocystoplasty in patients with an areflexic low compliant bladder.

Aim: This study was performed with the aim of evaluating gastrocystoplasty as a method of management of patients with an areflexic low compliant bladder.

Patients And Methods: We performed gastrocystoplasty in 30 patients (19 males and 11 females) with an areflexic low compliant bladder. The mean age of the patients was 23.

Laparoscopic radical cystectomy with orthotopic neobladder.

Purpose: We report our technique of laparoscopic radical cystectomy in nine patients. Diversion was achieved by a modified Camey II orthotopic neobladder (the Y bladder) performed by a minilaparotomy in three cases and laparoscopically in the last six cases.

Patients And Methods: There were eight men with muscle-invasive transitional-cell carcinoma and one woman with verrucous squamous-cell carcinoma of the bladder.

Sectional impressions for mandibular distal extension removable partial dentures.

Statement Of Problem: Corrected impression procedures provide the best possible support to be gained from an edentulous ridge for a removable partial denture, but they are time-consuming and technique-sensitive.

Purpose: An experimental mandibular distal extension removable partial denture was used to measure the vertical movement of denture bases during biting.

Material And Methods: Five patients participated for whom vertical movement of denture bases was measured by comparing the thickness of plaster interocclusal records made with the denture at rest and under biting pressure.

Stomatognathic dysfunctional symptoms in Saudi Arabian adolescents.

Secondary school Saudi students participated in a questionnaire about stomatognathic dysfunction symptoms. The adolescents were interviewed about general health, peripheral joint disease, chewing function, oral parafunctions, and symptoms of dysfunction. Thirty-two per cent of participants had at least one dysfunction symptom.

Accuracy of freely adapted resin record bases.

Forty autopolymerizing resin record bases were made; 10 bases were adapted by finger pressure on tray resin material dough, 10 bases by sprinkling orthodontic resin, and 10 of repair material by either of the two previous techniques. Stone casts and acrylic resin bases were sectioned at canine, premolar, and molar coronal planes. Width of the gap between base and cast and the thickness of the base were measured at the buccal sulcus, ridge crest, lateral palatal slope, and palatal midpoint.

Displacement of border tissues during final impression procedures.

Two different impression procedures were used to reproduce the maxillary tissue form of five edentulous patients. One procedure used modeling plastic to mold the borders of spaced trays while the tissue contour was recorded with regular-body polysulfide. The second procedure used tissue treatment material to mold the borders of selectively spaced trays while the impression was completed in lightbody polysulfide.

Adenohypophyseal activity in relation to suprarenal function in tuberculosis.

This work was carried out on 150 subjects. They were classified into four groups: group I: Bronchogenic pulmonary T. B.