University of Tehran
Journal of Sciences, Islamic Republic of Iran
1016-1104
2345-6914
4
3
1993
09
01
CONIDIAL DISTRIBUTION OF FRESHWATER
HYPHOMYCETES OF AN IRANIAN RIVER:
ZAYANDE-ROUD
EN
There is no published report regarding Iran's aquatic hyphomycetes. In an attempt to identify species of aquatic hyphomycetes in a river in central Iran (Zayande-Roud River), conidial frequency and distribution were determined by filtration. Water samples were collected monthly from two stations 55 km apart and filtered through millipore filters (5 um pore sizes). This was carried out for seven months starting in March 1990. Species identified are as follows: Alatospora acuminata, Anguillospora sp. 1; Clavariopsis aquatica, Lunulospora curvula, Tetracladium marchalianum,Tricladium sp. and Vargamyces aquaticus. Except for T. marchalianum, which was not present on filter papers after March, all other species were present at least till May with Anguillospora sp. 1 and V. aquaticus being recorded in August. Conidial frequency declined steadily from March through September. This might relate to declining organic resources available in the river.
https://jsciences.ut.ac.ir/article_31554.html
https://jsciences.ut.ac.ir/article_31554_43f7347edd0ca3c67227f1634cc32fee.pdf
University of Tehran
Journal of Sciences, Islamic Republic of Iran
1016-1104
2345-6914
4
3
1993
09
01
THE CHINKARA (GAZELLA BENNETTI) IN IRAN,
WITH THE DESCRIPTION OF TWO NEW SUBSPECIES
EN
The distribution of Gazella bennetti in Iran is reviewed. The species is commonly said to be confined to the southeastern part of the country, but is actually widespread over suitable areas, east of the Zagros Range and south of the Alborz. In the north and west of this range, there is a hitherto undescribed subspecies, which is named and diagnosed for the first time in this paper; its similarity in colouration to the commoner Gazella subgutturosa doubtless accounts for the failure of specialists to record its existence previously. A further new subspecies, confined to the region of Bushehr, is also named and diagnosed.
https://jsciences.ut.ac.ir/article_31555.html
https://jsciences.ut.ac.ir/article_31555_ca4fd6a498e7aaed61c9338ef2534a40.pdf
University of Tehran
Journal of Sciences, Islamic Republic of Iran
1016-1104
2345-6914
4
3
1993
09
01
Co(II) AND Cu(II) - PROMOTED BASE
HYDROLYSIS OF 2-CYANO-l,
lO-PHENANTHROLINE
EN
Co(II) and Cu(II) promoted base hydrolysis of 2-cyano, 1, lO-phenanthroline was
studied. At 298.2°K, Cu(II) reaction is more efficient (by a factor of 20) than either Co(ll) and its analogues Ni(II) in promoting base hydrolysis.
https://jsciences.ut.ac.ir/article_31556.html
https://jsciences.ut.ac.ir/article_31556_3bb0d470f4d6404ee4eb52abf395c592.pdf
University of Tehran
Journal of Sciences, Islamic Republic of Iran
1016-1104
2345-6914
4
3
1993
09
01
A STUDY OF THE SILYLATION REACTION OF
IMINES WITH TRIMETHYLCHLOROSILANE IN
THE PRESENCE OF LITHIUM
EN
A mixture oftrimethylchlorosilane (TMS-Cl), lithium and tetrahydrofuran (THF) reacts with imines to produce disilyl compound by addition of two trimethylsilyl (TMS) groups to the double bond of the imine. On hydrolysis the TMS on nitrogen is substituted by hydrogen and yields ? -silylamine. In the presence of acetyl chloride (CH COC1), benzene and pyridine, the ?-silyamine produces the corresponding amides.Finally, the related tertiary silylamines have been prepared.
https://jsciences.ut.ac.ir/article_31557.html
https://jsciences.ut.ac.ir/article_31557_705dd8acba00082e36fc4838b6986659.pdf
University of Tehran
Journal of Sciences, Islamic Republic of Iran
1016-1104
2345-6914
4
3
1993
09
01
ONE STEP SYNTHESIS OF ANILINO ALKYL-NSUBSTITUTED
PHTHALIMIDES RELATED TO
BENZOISOQUINOLINE-1,3-DIONES (1)
EN
A facile one step synthesis of anilino alky1-N-substituted phthalimide I is reported.
The following compounds belonging to this series were made:
1. (anilino-N-ethyl) phthalimide 8
2. (3,4, 5-trimethoxy anilino-N-ethyl) phthalimide 6
3. (3,4, 5-trimethoxy anilino-N-propyl) phthalimide 7
4. N-(ethyl phthalirnido-p-amino benzoyl) glutamic acid diethyl ester 10
5. N-(propyl phthalimido-p-amino benzoyl) glutamic acid diethyl ester 11
https://jsciences.ut.ac.ir/article_31558.html
https://jsciences.ut.ac.ir/article_31558_50ba18666040afee55d8bd1c87eda39e.pdf
University of Tehran
Journal of Sciences, Islamic Republic of Iran
1016-1104
2345-6914
4
3
1993
09
01
AN APPROACH TO THE A RING OF VITAMIN D ANALOGUES VIA SEQUENTIAL CARBOMETALATION/ ANION CAPTURE
EN
An intramolecular palladium catalysed carbometalation followed by anion
capture achieves construction of a model comprised of the A ring of Vitamin D
oxygen analogues.
https://jsciences.ut.ac.ir/article_31559.html
https://jsciences.ut.ac.ir/article_31559_a8233d49d2ef7b623f09d61d7c082232.pdf
University of Tehran
Journal of Sciences, Islamic Republic of Iran
1016-1104
2345-6914
4
3
1993
09
01
A CONVENIENT METHOD FOR PREPARATION
AND ISOLATION OF 4-n PROPYL-I ,2,4TRIAZOLINE-
3,5-DIONE
EN
4-n- prophyl- 1,2,4- triazoline-3-5- dione was synthesized from n-propylisocyanate
and ethylhydrazine carboxylate in several steps. The title compound was isolated as
pink crystals in high yield and purity. This compound was fully characterized by IR and H-NMR spectroscopy
https://jsciences.ut.ac.ir/article_31560.html
https://jsciences.ut.ac.ir/article_31560_5b2f800322d191c58400587b783879d0.pdf
University of Tehran
Journal of Sciences, Islamic Republic of Iran
1016-1104
2345-6914
4
3
1993
09
01
PYRAZOLINES AND ISOXAZOLINES (I).
SYNTHESIS AND ANTIMICROBIAL ACTIVITIES
OF P-(1-ACYL-3-METHYL-5-ARYL-4
PYRAZOLINOYL / P-(3-METHYL-5-ARYL-4ISOXAZOLINOYL)
ARSANILIC ACID
EN
4-(acetoacetamido) arsanilic acid (II), which was then condensed with aryl aldehydes.
The resulting product on reaction with hydrazine hydrate and hydroxyl amine
hydrochloride yielded Pyrazolines (IV) and Isoxazolines (V), respectively. The
antimicrobial activity of compounds against a number of microorganisms was
evaluated. Some of these compounds showed significant antimicrobial activity
https://jsciences.ut.ac.ir/article_31561.html
https://jsciences.ut.ac.ir/article_31561_58d5153cb4771d6ddbe190bbedb91fed.pdf
University of Tehran
Journal of Sciences, Islamic Republic of Iran
1016-1104
2345-6914
4
3
1993
09
01
A NEW SPECIES OF HETEROSTEGINA IN
MIDDLE PALEOCENE FROM THE KHUZESTAN AREA (S.W. IRAN)
EN
New evidence gained by the study of Foraminifera from Khuzestan province in
southwest Iran reveals that the basal limit of the genus Heterostegina is not
restricted to the Eocene epoch. By introducing a new species of this genus (H.
rezvaninejadi), this study shows that the early appearance of this genus should be lowered down further still, at least, into the Middle Paleocene.
https://jsciences.ut.ac.ir/article_31562.html
https://jsciences.ut.ac.ir/article_31562_12d3bc65cd3aa95e7490ea5dd74c68a4.pdf
University of Tehran
Journal of Sciences, Islamic Republic of Iran
1016-1104
2345-6914
4
3
1993
09
01
SOME RESULTS OF CONTINUITY ?f
EN
The dynamical behavior of a map on the unit interval has been the subject of
much contemporary research. In this paper, we will consider the relation between
the continuity of the map cof and cof for some positive integer k, where f
is a continuous map from the unit interval to itself, and ?f is a function which
takes any element of the unit interval to the set of all subsequential limits of the
orbit of x under f Also, it is shown that for any k, the continuity of ?f implies
the equicontinuity of the iterates { f n}.
https://jsciences.ut.ac.ir/article_31563.html
https://jsciences.ut.ac.ir/article_31563_c06c6d0bf5560eb9ec4f1f11d41462e0.pdf
University of Tehran
Journal of Sciences, Islamic Republic of Iran
1016-1104
2345-6914
4
3
1993
09
01
ON FINITENESS OF PRIME IDEALS IN NORMED RINGS
EN
In a commutative Noetherian local complex normed algebra which is complete in
its M-adic metric there are only finitely many closed prime ideals.
https://jsciences.ut.ac.ir/article_31564.html
https://jsciences.ut.ac.ir/article_31564_15ea4a291e6996a082602954dea8d486.pdf
University of Tehran
Journal of Sciences, Islamic Republic of Iran
1016-1104
2345-6914
4
3
1993
09
01
A COMMUTATIVITY CONDITION FOR RINGS
EN
In this paper, we use the structure theory to prove an analog to a well-known
theorem of Herstein as follows: Let R be a ring with center C such that for all x,y ?
R either [x,y]= 0 or x-x [x,y]? C for some non negative integer n= n(x,y) dependingon x and y. Then R is commutative.
https://jsciences.ut.ac.ir/article_31565.html
https://jsciences.ut.ac.ir/article_31565_e521d2c7264273cb2715d1d9feacd431.pdf
University of Tehran
Journal of Sciences, Islamic Republic of Iran
1016-1104
2345-6914
4
3
1993
09
01
ESTIMATION OF RADIATION LOSS FROM
STELLARATORS USING NEOCLASSICAL
TRANSPORT THEORY
EN
The radiation power loss from a magnetically confined plasma in a
stellarator has been calculated using neoclassical particle and energy fluxes in
an energy balance equation. We could obtain a power loss of about 34% of the
total input power by numerical calculation. This fraction of the power loss has
been found to be in good agreement with the experimentally measured values of
30-40% for our reference machine.
https://jsciences.ut.ac.ir/article_31566.html
https://jsciences.ut.ac.ir/article_31566_875b09e6f505bbe741f3001fea3b3ce3.pdf
University of Tehran
Journal of Sciences, Islamic Republic of Iran
1016-1104
2345-6914
4
3
1993
09
01
MULTIHADRON PRODUCTION FOR
e e FOR FROM 50 TO 61 GeV, C. M.
ENERGIES AND COMPARISON WITH
MULTIHADRON PRODUCTION IN HADRONIC
INTERACTIONS
EN
Average values of< 1- T >where T is the thrust are presented for e: e: AMY data
and are compared with their values in hadronic interactions. As far as possible, similar
analysis techniques have been employed in the two different interactions. Similar
variation with E is observed for this average in both data. The values of < PT> and
< PL > relative to the thrust axis in e e are similar to those in hadronic interactions.
The thrust distributions at the same energies for the two different data are in rather
good agreement at the higher T values. At the lower T values, however, the e e
distribution shows more enhancement than that for hadronic interactions. We discuss
a possible explanation for all these features.
https://jsciences.ut.ac.ir/article_31567.html
https://jsciences.ut.ac.ir/article_31567_e7e3e0ea89f334aaa5152b2027b08bfd.pdf