Background and objectives: A modern biotechnological technique to obtain useful natural products from plants is to isolate them from their callus. Zataria multiflora is a bushy herb of the Lamiaceae family known for its stimulant, antibacterial, antioxidant and expectorant effects in Iranian folk medicine.  The present study has investigated the induction of callus tis...

Different types of terpenoids were separated from extract of bark of Oroxylum indicum. The composition of phytoconstituents terpenoids was determined by GC and GC-Mass technique. Sixteen components were identified, out of which three components are major constituents. Identification of all the components was done by spectral studies, retention time and by comparing with standards. PHYTOCHEMISTRY

During fatal aviation accident investigations, biosamples from the victims are submitted to the FAA Civil Aeromedical Institute (CAMI) for drug analysis. In the process of one such analysis by CAMI, an unknown substance was found in a urine sample. Simultaneous screening by thin layer chromatography (TLC) and gas chromatography/FID (GC/FID) suggested the presence of pseudoephedrine. A subsequen...

We examine ultra-diffuse galaxies (UDGs) and their relation to non-UDGs in mass-radius-luminosity space. begin by publishing Keck/KCWI spectroscopy for the Coma cluster UDG Y358, which we measure both a recessional velocity dispersion. Our confirms association with Y358's status as UDG. From our dispersion (19 $\pm$ 3 km s$^{-1}$) calculate dynamical mass within half-light radius provides evide...

This minireview discusses the use of mass spectrometry in biomarker discovery, the current utility of these markers for bacterial identification after culture, and the potential for nonculture-based diagnosis of infectious diseases. The bases of these thoughts are the independent revolutions that have occurred in the fields of molecular biology and analytical chemistry, leading to the current i...

The impact of wood combustion on ambient aerosols was investigated in Augsburg, Germany during a winter measurement campaign of a six-week period. Special attention was paid to the high time resolution observations of wood combustion with different mass spectrometric methods. Here we present and compare the results from an Aerodyne aerosol mass spectrometer (AMS) and gas chromatographic – mass ...

different solvent extracts of a red algae, hypnea flagelliformis,and two brown algae, cystoseira myrica and sargassum boveanum, collected from the persian gulf coast were subjected to different bioassays including: 1,1-diphenyl-2-picrylhydrazyl (dpph) free radical scavenging assay, antibacterial and antifungal activity by thin layer chromatography (tlc)-bioautography, agar disc diffusion (add) ...

Volatile compounds emanated from human skin were studied by gas chromatography/mass spectrometry (GC/MS). The purpose of this study was to identify compounds that may be human-produced kairomones which are used for host location by the mosquito, Aedes aegypti (L.). The procedure used to collect volatiles was chosen because of prior knowledge that attractive substances can be transferred from sk...

We present an astrometry and photometry catalogue of globular cluster (GC) candidates detected with HST WFPC2 in a sample of 19 early-type galaxies, appropriate for comparison to the lowmass X-ray binary (LMXB) populations observed with Chandra. In a companion paper, we present the Chandra data and investigate the relation between these populations. We demonstrate that, although there is little...

Terpenes are active constituents of many pharmaceutical dosage forms with naturalproducts origin. One of the challenges in developing dosage forms with herbal originis their standardization as pharmaceutical products. GC-Mass is the most decisive andreliable technique to fulfill the requirements in this regard. In the present study, a reliable,rapid, and accurate method was developed for determ...