Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Daniel R. Muchiri"'
Publikováno v:
Journal of the American Oil Chemists' Society. 89:1567-1575
Four varieties (Boribo, Dodo, Kagege, and Kent) of ripe mango (Mangifera indica, L.) fruits were collected directly from the farmers in Meru County (Kenya), peeled, depulped and the stones deshelled. The mango kernels obtained were crushed, sun-dried
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::45c581d11d19cf928ea7f7321338452a
https://doi.org/10.1007/s11746-012-2054-6
https://doi.org/10.1007/s11746-012-2054-6
Publikováno v:
Volume: 2, Issue: 4 171-183
European Journal of Educational Research
European Journal of Educational Research, Vol 2, Iss 4, Pp 171-183 (2013)
European Journal of Educational Research
European Journal of Educational Research, Vol 2, Iss 4, Pp 171-183 (2013)
Chemistry is one of the subjects that students sit for in the Kenya Certificate of Secondary Education (KCSE). The attainment of students in chemistry in KCSE has been quite low. An analysis of the past Chemistry examination papers taken in KCSE reve
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3f4cf7aceeead90447b975118327bf3c
https://dergipark.org.tr/tr/pub/eujer/issue/35113/389465
https://dergipark.org.tr/tr/pub/eujer/issue/35113/389465
Publikováno v:
The Southeast Asian journal of tropical medicine and public health. 43(3)
We investigated the in vivo activity of crude water extracts of Ajuga remota Benth (Labiatae) against Plasmodium berghei in mice using plants harvested from two areas in Kenya where the plant is commonly used to treat malaria. The extract was tested
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::ec15047a73032f61e5cb8d0cd73e3ba1
https://pubmed.ncbi.nlm.nih.gov/23077832
https://pubmed.ncbi.nlm.nih.gov/23077832
Publikováno v:
Journal of Heterocyclic Chemistry. 31:261-263
Extension of the Reissert-Henze reaction to treatment of thieno[2,3-b]pyridine 7-oxide with potassium thiocyanate and benzoyl chloride in water-methylene chloride gives a 2% yield of bis(6-thieno[2,3-b]pyridyl) disulfide. Peroxidation of 5-ethylthien
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6a501d0fc7d5a3ee8de182c1e82f1ec1
https://doi.org/10.1002/jhet.5570310146
https://doi.org/10.1002/jhet.5570310146
Autor:
Milton L. Lee, Robert M. Campbell, Daniel R. Muchiri, Raymond N. Castle, Masaharu Nishioka, John G. Stuart
Publikováno v:
Analytical Chemistry. 57:2211-2215
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ece10bb6274e360f6720422ca377ae73
https://doi.org/10.1021/ac00289a009
https://doi.org/10.1021/ac00289a009
Autor:
Daniel R. Muchiri, LeRoy H. Klemm
Publikováno v:
Journal of Heterocyclic Chemistry. 20:213-217
Treatment of a thienopyridine N-oxide with benzoyl chloride and cyanide ion (Reissert-Henze reaction) was shown to produce the corresponding cyanothienopyridine (43-84% yield in three parent systems), wherein the cyano substituent occurs alpha to the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::881a24b562ce347967efd8d9d4562292
https://doi.org/10.1002/jhet.5570200144
https://doi.org/10.1002/jhet.5570200144
Autor:
Milton L. Lee, Larry J. Baldwin, Raymond N. Castle, Masaharu Nishioka, Hirotaka Kudo, John G. Stuart, Sudabeh Pakray, Daniel R. Muchiri
Publikováno v:
Analytical Chemistry. 57:1327-1330
Hydroxylated thiophenic compounds in a coal liquid were determined by capillary column gas chromatography and gas chromatography/mass spectrometry. Capillary column gas chromatography with two new selective stationary phases, a biphenyl polysiloxane
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c34ba44314903fca5851dab3d8ee9c58
https://doi.org/10.1021/ac00284a034
https://doi.org/10.1021/ac00284a034
Publikováno v:
Journal of Heterocyclic Chemistry. 26:1277-1281
Three compounds, thieno[3,2-b]pyridine 4-oxide, 7-nitrothieno[3,2-b]pyridine 4-oxide (1c), and 6-cyano-thieno[2,3-b]pyridine, undergo nitration by means of a mixture of nitric and sulfuric acids to yield 3,7-dinitro-thieno[3,2-b]pyridine (3%), 3,7-di
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a6beb501c6acaec211c5ddc923baee4d
https://doi.org/10.1002/jhet.5570260512
https://doi.org/10.1002/jhet.5570260512
Publikováno v:
Journal of Heterocyclic Chemistry. 22:1249-1252
Thieno[3,2-b]pyridine (1) is oxidized to N-oxide 1a by means of m-chloroperoxybenzoic acid (83%). Compound 1a forms adducts with hydrogen chloride and picric acid and gives ring substitution alpha or gamma to the heteronitrogen atom. Thus, 1a plus ni
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::791030926f274f3f03d97b9725897163
https://doi.org/10.1002/jhet.5570220522
https://doi.org/10.1002/jhet.5570220522
Publikováno v:
Journal of Heterocyclic Chemistry. 21:1135-1140
Treatment of the N-oxide 1a of thieno[2,3-b]pyridine (1) with either (a) acetic anhydride and ethyl cyanoacetate or (b) benzoyl chloride and an enamine of cyclohexanone (Hamana reactions) serves to introduce a C-substituent at the 4-position of 1. In
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::da4c1e72bb018bf63503b4cd5d7c7668
https://doi.org/10.1002/jhet.5570210441
https://doi.org/10.1002/jhet.5570210441