With a tube etching process, conical-ended optical fibers for middle infrared lasers that have lateral emissions can be produced, a feature of benefit for delivering laser energy onto the root canal walls. This study examined the ability of these improved laser tips when Er:YAG and Er,Cr:YSGG lasers were used in root canals in which thick smear layers had been created intentionally to provide a...

A 79-year old man presented with chest pain and fatigue. He was found to have anemia (hemoglobin 8.8 g/dL) and leukocytosis (white blood cell count 244x10/L) with a predominance of lymphocytes (94%). Flow cytometric study and flourescence in situ hybridization analysis of the peripheral blood lymphocytes were consistent with a diagnosis of mantle cell lymphoma. A peripheral smear obtained from ...

Abstract Among the high-performance and engineering polymers, polyimides closely related polyetherimide (PEI) stand out by their capability to react with nucleophiles under relatively mild conditions. By targeting phthalimide groups in chain backbone, post-functionalization offers a pathway adjust surface properties such as hydrophilicity, solvent resistance, porosity. Here, we use ultrathin PE...

A Gemini surfactants (GS) which are bis quaternary ammonium salt. It is prepared from tetramethyl ethylene diamine (TMEDA) with cetyl bromide, while an ordinary surfactant (OS),which salt, trimethyl amine (TMA) and bromide. They were identified by elemental analysis IR spectroscopy.
 Comparing the GS,OS commercial surfactants, shows interesting properties have a variety of uses, such as De...

Alternative current impedance spectroscopy (ACIS) is a promising non-destructive testing method to monitor long-term change and assess the durability of concrete. This study investigates influences Ethylene Diamine Tetraacetic Acid (EDTA) on hydration hardening cement by ACIS. It found that EDTA retards early-age but can facilitate later age reaction. Pastes with show comparable or higher compr...

Objective: To investigate the frequency of blood transmissible infections in region South Punjab. Study design: Descriptive cross-sectional Place and duration: was carried out from February 2019 to 2021 over a period 2 years at—removed for blind review--. Methodology: All voluntary replacement donors who arrived at hospital between included time were considered analysis. Total two samples taken...

The temperature and pH dependent self-assembly of three star shaped ethylene oxide-propylene oxide (EO-PO) block copolymers (Tetronics® 304, 904 and 908) with widely different hydrophobicity was examined in aqueous solutions. Physico-chemical methods viz. viscosity, cloud point, solubilization along with thermal, scattering and spectral techniques shows strongly temperature and salt dependent s...

Aim: To evaluate the effectiveness of four different irrigation regimes on removal of smear layer and smear plugs at the tubular apertures in the middle and apical thirds of the root canals by using Scanning Electron Microscopy(SEM). Settings and Design: In vitro material science study. Materials and methods: Twenty human mandibular first premolars were used for this study. The teeth were divid...

Serrapeptase, a proteolytic enzyme, has been used for the adjuvant treatment of many diseases. However, its fibrinolytic activity is still uncertain. Herein, serrapeptase and in vitro thrombolytic effects were investigated. The results showed that was 1295 U/mg, specific 3867 U/mg protein when toward casein 2800 U/mg. optimum temperature pH 37-40°C 9.0, respectively. At 1 mmol/L, Zn2+, Mn2+ Fe2...

During exploration for oil and gas, a technical drilling fluid is used to lubricate the drill bit, maintain hydrostatic pressure, transmit sensor readings, remove rock cuttings and inhibit swelling of unstable clay based reactive shale formations. Increasing environmental awareness and resulting legislation has led to the search for new, improved biodegradable drilling fluid components. In the ...