نتایج جستجو برای: mass spectrophotometry
تعداد نتایج: 484727 فیلتر نتایج به سال:
The hexane extract of Curcuma aromatica, a plant belonging to the family Zingiberaceae was tested on 10 bacterial strains (clinical isolates and standard strains). Agar diffusion method was adopted for determining the antibacterial activity of the extract. The hexane extract was found to be active against all Gram-positive strains tested, but inactive against Gram-negative strains. The minimum ...
Today, with the development of microbiology, biotechnology, and cellular and molecular genetics, human knowledge of microorganisms has increased and the possibility of making biological weapons with pervasive effects has increased. On the other hand, bioterrorist events and the construction of laboratories and sites for the production of biological weapons in many developed and developing count...
Comparative study of phenolic compounds of the herb of Betonica L. genus species of flora of Ukraine
Species of Betonica L. genus are widespread in Ukraine and contain different groups biologically active substances: hydroxycinnamic acids, flavonoids, tannins, iridoids, terpenoids, steroids, essential oil, organic vitamin K, nitrogen-containing compounds, phenylethanoid glycosides. show a wide range pharmacological activity (anti-inflammatory, antioxidant, choleretic, diuretic, sedative, antit...
A matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) interlaboratory comparison was conducted on mixtures of synthetic polymers having the same repeat unit and closely matching molecular mass distributions but with different end groups. The interlaboratory comparison was designed to see how well the results from a group of experienced laboratories would ...
OBJECTIVES Class C β-lactamases are prevalent among Enterobacteriaceae; however, these enzymes are resistant to inactivation by commercially available β-lactamase inhibitors. In order to find novel scaffolds to inhibit class C β-lactamases, the comparative efficacy of monocyclic β-lactam antibiotics (aztreonam and the siderophore monosulfactam BAL30072), the bridged monobactam β-lactamase inhib...
Micro-thermal analysis combines the imaging capabilities of atomic force microscopy with the ability to characterise, with high spatial resolution, the thermal behaviour of materials. The conventional AFM tip is replaced by a miniature heater/thermometer which enables a surface to be visualised according to its response to the input of heat (in addition to measuring its topography). Areas of in...
In this research, the ability of pure recombinant human lactoferrin (rhLF), originated from milk transgenic goats, to bind ferric and europium ions has been shown by methods spectrophotometry, fluorescent spectroscopy, inductively coupled plasma mass spectrometry. The apo-form rhLF its complexes with Fe 3+ or Eu saturated in 76 22 %, respectively, were obtained. A method for detection total rel...
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