BACKGROUND Thymoquinone is an active principle of Nigella sativa seed known as "Habbah Al-Sauda" in Arabic countries and "Sinouj" in Tunisia. Bacterial biofilms tend to exhibit significant tolerance to antimicrobials drugs during infections. METHODS The antibacterial activity of Thymoquinone (TQ) and its biofilm inhibition potencies were investigated on 11 human pathogenic bacteria. The growt...

Activated carbon (ACBS) derived from Balanites aegyptiaca seed shell was employed to remove crystal violet (CV) aqueous medium. The characterization of this ACBS has been conducted using analytical techniques such as SEM and EDS. adsorption parameters investigated were: contact time (5-120 min), temperature (303-333 K) initial concentration (100-500 mg/l). data were interpreted by kinetic, isot...

Pseudomonas aeruginosa is a multi-drug resistant (MDR) human pathogen and known for their biofilm growth making it difficult to eliminate. This research aims determine the effectiveness of water extract melinjo leaf (Gnetum gnemon L) on inhibition cell attachment, degradation using Crystal Violet (CV) Assay. Reasearch results showed that contains saponin, alkaloid, tanin dan steroidal antibacte...

Adsorption techniques are widely used to remove the pollutants from waters, especially those that are not easily biodegradable. The removal of crystal violet dye (CVD) from water was studied by using Amberlyst 15, a cation-exchange resin (CER), along with Ferrous (Fe 2+ ) and H2O2 . In this study the main factors that can influence the degradation of crystal violet dye are molar ratio of [(H2O2...

Toxic cationic dyes are used in different textile industries. When the colour interacts with sunlight, it causes incomplete photosynthesis, inhibiting aquatic organisms’ growth and disrupting gas permeability water system. In this work, carbon nanotubes (CNTs) were prepared to employ acetylene hydrogen as precursor gases a microwave-assisted reactor. The obtained CNTs tested for their ability r...

Zirconia-carbon (ZC) composites were prepared via calcination of Zr-based metal organic frameworks, UiO-66 and amino-functionalized UiO-66, under N₂ atmosphere. The prepared composites were characterized using a series of instrumental analyses. The surface area of the ZC composites increased with the increase of calcination temperature, with the formation of a graphite oxide phase observed at 9...

We optically generated and observed GHz ultrasonic waves on liquid surfaces and a liquid/liquid interface for the first time using the transient reflecting grating ~TRG! method. Four kinds of samples were used for measurement of the surfaces; two types of black ink, an aqueous solution of crystal violet ~CV aq solution! and ethanol aqueous solutions of CV. A cyclohexane/CV aq solution interface...

BACKGROUND AND AIM Endocytoscopy (EC) at ultra-high magnification enables in vivo visualization of cellular atypia of gastrointestinal mucosae. Clear images are essential for precise diagnosis by EC. The aim of the present study was to evaluate the optimal staining method for EC in the colon. METHODS Thirty prospectively enrolled patients were allocated 1:1:1 to three distinct staining method...

A drug delivery system that consists of microperforated polyimide microtubes was developed and characterized. Two groups of polyimide tubes were used. One set consisted of microtubes (I.D. = 125 microm) with 32.9 +/- 1.7 microm size holes. The second set consisted of larger tubes (I.D. = 1000 microm) with 362-542 microm holes. The number of holes was varied between 1 and 3. The small tubes were...

The formula for crystal violet given in Conn's book (1940) implies that quantitative measurement of the dye adsorbed by bacterial cells should be possible by a suitable micro-Kjeldahl procedure. At the present time there is no satisfactory method for estimating the degree of gram positivity although the need for such a procedure is recognized and is discussed by Bartholomew and Mittwer (1952). ...