Results 71 to 80 of about 160,813 (191)

Development of an analytical method to determine malondialdehyde as an oxidative marker in cryopreserved bovine semen [PDF]

, 2015
Frozen sperm is widely used in artificial insemination of cattle as well as other animal species. As a consequence of the freezing and thawing processes of semen, an excess of reactive oxygen species (ROS) are formed.
Nazareno, Mónica Azucena, Palma, Gustavo Adolfo, Reineri, Pablo Sebastian, Yonny, Melisa Evangelina   +3 more
core   +2 more sources

PENENTUAN ASAM OKSALAT SECARA SPEKTROFOTOMETRI DENGAN METODE METILEN BIRU [PDF]

Molekul, 2006
A spectrophotometric method for the determination of oxalic acid has been developed, based on its catalytic effect on the redox reaction between methylene blue and sulphide, measured at the maximum absorption wavelength of 664 nm.
Irmanto, Suyata
doaj  

Optical and infrared spectrophotometry of 18 Markarian galaxies [PDF]

, 1976
Slit spectra, spectrophotometric scans and infrared broad band observations are presented. Eight of the program galaxies can be classified as Seyfert galaxies.
Becklin, E. E., Neugebauer, G., Oke, J. B., Searle, L.   +3 more
core   +1 more source

First Astronomical Application of a Cryogenic TES Spectrophotometer [PDF]

, 1999
We report on the first astronomical observations with a photon counting pixel detector that provides arrival time- (delta t = 100ns) and energy- (delta E_gamma < 0.15eV) resolved measurements from the near IR through the near UV.
A. J. Miller, B. Cabrera, E. Figueroa-Feliciano, Fioc M., Harris L., Peacock A., Penny A. J., Perryman M. A. C., Perryman M. A. C., R. W. Romani, Romani R. W., S. W. Nam   +11 more
core   +2 more sources

Steroidal saponin concentrations in Brachiaria decumbens and B. brizantha at different developmental stages Concentrações de saponina esteroidal em diferentes fases do desenvolvimento de Brachiaria decumbens e B. brizantha

Ciência Rural, 2009
Brachiaria species contain steroidal saponins and are involved in outbreaks of hepatogenous photosensitization. This research presents the levels of a steroidal saponin, protodioscin, in the seeds and aerial parts of B. brizantha and B.
Karine Bonucielli Brum, Mitsue Haraguchi, Mirella Biasoli Garutti, Fernanda Nogarol Nóbrega, Beneval Rosa, Maria Clorinda Soares Fioravanti   +5 more
doaj  

Selective and non-extractive spectrophotometric determination of cefdinir in formulations based on donor-acceptor complex formation

Química Nova, 2010
Cefdinir has broad spectrum of activity and high prescription rates, hence its counterfeiting seems imminent. We have proposed a simple, fast, selective and non-extractive spectrophotometric method for the content assay of cefdinir in formulations.
Babita K. Singh, Dilip V. Parwate, Seema Srivastava, Sudhir. K. Shukla   +3 more
doaj   +1 more source

Experimentos didáticos utilizando sistema de análise por injeção em fluxo

Química Nova, 2000
Didactic experiments are proposed in order to demonstrate the characteristics of flow injection analysis and to extend the applications of FIA to the determination of physical chemistry parameters in undergraduate labs.
Rocha Fábio Rodrigo Piovezani, Martelli Patrícia Benedini, Reis Boaventura Freire dos   +2 more
doaj  

Aplikasi Analytical Hierarchy Process Pada Pemilihan Metode Analisis Zat Organik Dalam Air

Jurnal Ilmiah Teknik Industri, 2016
Water is one of the food products analyzed in water chemistry and environmental laboratories. One of the parameters analyzed are organic substances.
Dino Rimantho, Marrie Rachel, Bambang Cahyadi, Yan Kurniawan   +3 more
doaj   +1 more source

Reduced Wolf-Rayet Line Luminosities at Low Metallicity

, 2005
New NTT/EMMI spectrophotometry of single WN2-5 stars in the Magellanic Clouds are presented, from which HeII 4686 line luminosities have been derived, and compared with observations of other Magellanic Cloud WR stars.
Barba, Bartzakos, Bouchet, Breysacher, Breysacher, Brown, Chandar, Chen, Conti, Conti, Crowther, Crowther, Crowther, Crowther, Crowther, Crowther, de Mello, Foellmi, Foellmi, Galama, Garnett, Gibson, Gräfener, Gräfener, Heap, Hilditch, Hillier, Hillier, Hillier, Howarth, Izotov, Izotov, Kingsburgh, Kingsburgh, Koenigsberger, L. J. Hadfield, Langer, Legrand, Li, Lundström, MacFadyen, Maeder, Massey, Massey, Massey, Massey, Massey, Meynet, Moffat, Morgan, Morris, P. A. Crowther, Pagel, Schaerer, Schaerer, Schaerer, Schmutz, Schmutz, Seaton, Shapley, Smith, Smith, Smith, Smith, Smith, Stanek, Terlevich, Torres-Dodgen, Udalski, Vacca, Van Marle, Vink, Vreeswijk, Walborn   +73 more
core   +1 more source

Polarographic and Spectrophotometric Study of Lead Complexes with Diethanoldithiocarbamate

Journal of the Brazilian Chemical Society, 1998
Experimental and theoretical aspects concerning the behaviour of lead-dietanoldithiocarbamate complexes in aqueous solutions were studied. The reaction occurs through complexation and formation of a yellow precipitate, which is soluble in ligand excess ...
Marques A.L.B., Chierice G.O.
doaj