نتایج جستجو برای: gas chromatographymass spectrometry gcms
تعداد نتایج: 326793 فیلتر نتایج به سال:
INTRODUCTION Plant volatiles (PVOCs) are important targets for studies in natural products, chemotaxonomy and biochemical ecology. The complexity of PVOC profiles often limits research to studies targeting only easily identified compounds. With the availability of mass spectral libraries and recent growth of retention index (RI) libraries, PVOC identification can be achieved using only gas chro...
An extremely well-preserved dinosaur (Cf. Edmontosaurus sp.) found in the Hell Creek Formation (Upper Cretaceous, North Dakota) retains soft-tissue replacement structures and associated organic compounds. Mineral cements precipitated in the skin apparently follow original cell boundaries, partially preserving epidermis microstructure. Infrared and electron microprobe images of ossified tendon c...
Methods Stem Br (Vital Nutrients lot # 2890; Middletown, CT), was tested for authenticity and purity. Female C57BL/6J mice, (Jackson Laboratory; Bar Harbor, ME) received one bolus, i.p. injection of Br (12mg/kg) in 0.5ml of physiological saline and plasma collected at baseline 3, 6, 12 and 24 hours. All procedures were approved by the Animal Care Committee at University of CT Health Center. Pos...
BACKGROUND A gas chromatography mass spectrometry (GCMS) method for the determination of diclofenac in human plasma has been developed and validated. RESULTS This method utilizes hexane which is a relatively less toxic extraction solvent compared to heptane and benzene. In addition, phosphoric acid and acetone were added to the samples as deproteination agents, which increased the recovery of...
Rhanterium epapposum, native to the Arabian Peninsula, is traditionally used cure skin infections. The objective screen phytochemical content and antimicrobial activity of aqueous, methanol 80% extracts aerial parts R. epapposum. screening methanolic, epapposum was conducted using gas chromatographymass spectrometry. activities were assessed by well diffusion microdilution methods. Qualitative ...
The hydro distilled essential oil of fresh leaves of Platycladusorientalis (L) Franco [Thujaorientalis] Family: cupressaceae was analysis by gas chromatography and gas chromatography/mass spectrometry.(GCMS). The oil yield is (1.25%) w/w. Thirty two compounds representing 96.62% of the total oil were identified. The main constituents are IR-αpinene (15.92%), α-caryophyllene (10.42%), trans-β oc...
The purpose of the study in Karangkobar area was to investigate source rock potential fine-grained surface samples clastic sediments. use for Indonesia is still limited. We conducted geochemical laboratory analyses this research, including Total Organic Carbon (TOC), Rock-Eval Pyrolysis (REP), and Gas chromatography–mass spectrometry (GCMS). Seventeen have been analyzed their TOC content. resul...
Pergularia daemia is a hispid perennial herb that grows along the roadsides of India and other tropical and subtropical regions. This medicinal plant is traditionally used to treat various ailments like infantile diarrhea, malarial fever, vatha, convulsion, asthma, poisoning, mental disorder, anemia, leprosy, piles etc. However, the bioactive components of this plant are not yet established ful...
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