Zobrazeno 1 - 10
of 18
pro vyhledávání: '"H. H. Sayed"'
Publikováno v:
Journal of Environmental Science. 48:253-284
The aim of this research is to monitor and analyze the investigative treatment of environmental issues in the Egyptian newspapers, evaluating as well these treatments in the light of the scientific rules of the investigative press and the influential
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c7b407b266e537de729c2f4253601bd9
https://doi.org/10.21608/jes.2019.136097
https://doi.org/10.21608/jes.2019.136097
Publikováno v:
Phosphorus, Sulfur, and Silicon and the Related Elements. 183:2318-2329
4-Mercapto-5-acetylpyrimidine derivative was used as a precursor for preparation of some novel thieno[2,3-d]pyrimidine, pyrazolo[2,3-d]pyrimidine, isothiazolo [5,4-d] pyrimidine, pyrrolo[4,5-d]pyrimidine, and pyrimidio[4,5-d]pyrimidine derivatives. F
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2462ac9df207af6ebc123f14e234da4c
https://doi.org/10.1080/10426500801963590
https://doi.org/10.1080/10426500801963590
Autor:
H. H. Sayed, Mohamed A. Ali
Publikováno v:
Phosphorus, Sulfur, and Silicon and the Related Elements. 183:156-167
Compounds 2, 3, 4, 7, 10, 11, 12 and 13 were formed via the reactions of [3-(4-chlorophenyl)oxiranyl]thiophen-2-yl-propanone with hydrazine derivatives, hydroxyl-amine hydrochloride, thiourea, thiosemicarbazide, carbon disulfide, phenyl isothiocyanat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a3fc59dd43021f85e510114e1f82e3af
https://doi.org/10.1080/10426500701564225
https://doi.org/10.1080/10426500701564225
Publikováno v:
Phosphorus, Sulfur, and Silicon and the Related Elements. 180:2767-2777
Compounds 2 and 9 were formed using 3-(4-chloro-phenyl)-1-pyridin-2-yl propenone ( 1 ) and malononitrile or ethyl cyanoacetate, respectively. The pyridine derivative 2 was in turn used as a precursor for the preparation of some pyridopyrimidine and f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8ef84f6f25b188cfdc504bfe682e4ae4
https://doi.org/10.1080/104265090968118
https://doi.org/10.1080/104265090968118
Publikováno v:
Phosphorus, Sulfur, and Silicon and the Related Elements. 180:2347-2360
A novel β -enaminonitrile of 1-(6-p-tolyl-pyridazin-3-yl)-pyrazole derivative 2 was formed using (6-p-tolyl-pyridazin-3-yl)-hydrazine ( 1 ) and 2-ethoxymethylenemalononitrile. The β-enaminonitrile derivative 2 was in turn used as a precursor for th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::16835e13c80bcabe51abc3f2a6068ee1
https://doi.org/10.1080/104265090921074
https://doi.org/10.1080/104265090921074
Publikováno v:
Scopus-Elsevier
2-Aryl-1-oxaspiro(2,5)octa-4-ones Ia,b were synthesized and reacted with thiourea in ethanol to give hydroxy cyclohexanone derivatives IIa,b. Compounds IIa,b were readily cyclised into the corresponding 5-hydroxy quinazolines IIIa,b and their dehydra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::da585d64a1c59e1759051d57c9336f50
https://doi.org/10.1080/10426509608038771
https://doi.org/10.1080/10426509608038771
Publikováno v:
Tropical biomedicine. 27(3)
Schizophrenia is a severe neuropsychiatric disorder of unknown etiology. As there is little information about the association between Toxoplasma gondii infection and schizophrenia in Iran, we investigated the seroprevalence of T. gondii in these pati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::a3691e48cec38649135cfc5a1ba43d10
https://pubmed.ncbi.nlm.nih.gov/21399589
https://pubmed.ncbi.nlm.nih.gov/21399589
Autor:
H. H. Sayed
Publikováno v:
ChemInform. 30
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e5291337cfc906dffc064e7d0f456ff4
https://doi.org/10.1002/chin.199918139
https://doi.org/10.1002/chin.199918139
Autor:
Badr A; Botany Department, Faculty of Science, Tanta University, 31527 Tanta, Egypt., Sayed-Ahmed H, El-Shanshouri A, Watson IE
Publikováno v:
TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik [Theor Appl Genet] 2002 Dec; Vol. 106 (1), pp. 143-8. Date of Electronic Publication: 2002 Jul 30.
Publikováno v:
Canadian journal of public health = Revue canadienne de sante publique [Can J Public Health] 1976 May-Jun; Vol. 67 (3), pp. 227-31.