142 research outputs found
Measurement of oxygen consumption of rat bone marrow cells by a polarographic method
No full text Page 751: R. M. Gesinski, J. H. Morrison, and J. R. Toepfer. “Measurement of oxygen consumption of rat bone marrow cells by a polarographic method.” An incorrect value for the Bunsen coefficient was used in calculating oxygen consumption. All values given for microliters of oxygen consumed—in the text, figures, and all tables—should be corrected by dividing by a factor of 4.77. This correction does not alter the interpretations made in the paper but only the magnitude of the consumption reported. </jats:p
Steinernema africanum n. sp. (Rhabditida, Steinernematidae), a New Entomopathogenic Nematode Species Isolated in the Republic of Rwanda
No full textAlternatives to hazardous insecticides are urgently needed for an environmentally friendly and effective management of insect pests. One such option is the use of entomopathogenic nematodes (EPN). To increase the availability of EPN with potential for biocontrol, we surveyed agricultural soils in the Republic of Rwanda and collected two Steinernema isolates. Initial molecular characterization showed that they represent a new species, for which we propose the name S. africanum n. sp. To describe this new species, we reconstructed phylogenetic relationships, calculated sequence similarity scores, characterized the nematodes at the morphological level, conducted crossing experiments, and isolated and characterized their symbiotic bacteria. At the molecular level, S. africanum n. sp. is closely related to S. litorale and S. weiseri. At the morphological level, S. africanum n. sp. differs from closely related species by the position of the nerve ring and also because the stoma and pharynx region is longer. The first-generation males have ventrally curved spicules with lanceolate manubrium and fusiform gubernaculum and the second-generation males have rounded manubrium and anteriorly hook-like gubernaculum. Steinernema africanum n. sp. does not mate or produce fertile progeny with any of the closely related species
UA-R-GC-1914-01-01-1988-02_Page-035
No full text- 3 -
7. Sadat City Housing.
A paper outlining the hou s ing probl e ms oE
e mployees of the Desert Development Center and variou s
housing options at Sadat City wa s circulated. Dr. Pede rse n
sa id the univer s ity would lik e the a uthority to buy a n
a partment building at Sadat City wh e n and if that is
possible. The committ ee pas sed a motion recomme nding th e
purchase of a building of type ( 2), as d escribed in th e
paper, when one b e come s available.
8. Other Business.
Mr. Crary inquired about the state of the airc
onditioning in the Science Building. Dr. Toepfer not ed
that air-conditioning i s a probl em through out the
un i ve r si t y, ad CI .i. n 9 t h d the i n ten d s t l) d 0 a n 'J ve r a 11
inventory of the university' s need s but has not gotten to i t
yet. Mr. Snajth observed that utility costs are rlJn ni n(~ up
ex pon e ntially .
9. Adjournment .
There being no ot her bu si ness the meeting w~s
adj ourned at 3 :50 p.m.
Res p ectf ully submitt ed ,
Peggy Nalle
CPc/J-14-S
Vergilrezeption im deutschen Humanismus am Beispiel von Stephan Reichs 'Bucolica'-Übersetzung
No full textUA-R-GC-1914-01-01-1989-03_Page-024
No full text'\
property owner, not1he tenant, including reasonable assurances to protect 1he property, and 1he filing
of a construction plan wi1h 1he government. As soon as this has been done, construction on 1hat side
of 1he property should start. At this point, 1he construction plan has not been filed with 1he
government; this is PB Sabbour's responsibility.
Mr. Hayden mentioned 1hat a new method, which should not damage ei1her 1he wall or 1he villa,
would be tried tomorrow, March I. Dr. Toepfer said 1hat1he next court hearing is setfor March 4 and
we were asking for delay. Shortly after 1hat date, 1he plan should be filed and construction should
proceed. In response to Dr. Vandiver's request 1hat a construction plan be prepared by SCI by
tomorrow, March I, Mr. Osman replied 1hat it would be done.
In conclusion, Mr. Osman stated 1hat SCI would submit a proposal to 1hem for protection of 1he
wall within 1he week, no later 1han Thursday, March 2. Mr. Shatla questioned whe1her PB Sabbour
had an interest in delaying, which Dr. Hegab denied, stating 1hat after submitting 1he plan, a meeting
would be held with representatives from AVC, PB Sabbour, and 1he governor. Mr. Bacon requested
that SCI begin work as rapidly as possible. At this point, 1he AVC engineers and representatives of
PB Sabbour and SCI left 1he meeting.
4. Purchase of Armenian Church Property
Dr. Toepfer reported 1hat after study, it has been decided 1hat this property would be of no
immediate use to AVC. We have also been informed 1hat 1he property had recently been leased out in
any case.
5. Sheikh Rihan Architect
Dr. Toepfer reported 1hat a letter has been sent out to several local fmns soliciting proposals. The
architects ofbo1h the J ameel Center and 1he Zamalek dormitory are interested in this project as are
o1hers.
6. Heliopolis Adult Education Building
Dr. Pedersen reported that a problem had arisen with 1he price for1he building. The owner had
initially asked for L.E. 1,500,000. Dr. Pedersen's au1hority from 1he Board had been L.E.
1,300,000. After negotiations, he had been informed that the property owner agreed to L.E.
1,350,000. He had asked the Chairman for authority to go to that figure and the Chairman had agreed.
It then turned out, however, 1hat 1he price had only been agreed to by the agent The owner would not
acceptless 1han L.E. 1,400,000. The Committee approved 1he President's recommendation and
moved to purchase 1he building atL.E. 1,400,000.
7. Construction over DPS
Dr. Toepfer reported 1hat Dean Brown is deciding on 1he use of 1he space, which will most likely be
used for bo1h office and classroom areas, wi1h individual air-conditioning units in each room. In
response to Dr. Vandiver's question regarding the starting date of1he project, Dr. Toepfer replied that
with the Committee's approval on the expenditure, 1he new rooms should be ready for use by
September 1989. The Committee supported the expenditure of up to L.E. 550,000.
8. Office and Classroom Changes
The expenditures for these changes were approved at the amount of L.E. 250,000 with the
understanding that additional funds may be necessary later.
9. Report of Consultant on Buildings and Grounds
Dr. Toepfer summarized the consultant's fmal report. The consultant found 1he Buildings and
Grounds' staff to be technically competent; however, he feels 1hey are not working to 1heir fullest
potential because ofleadership problems. The consultant recommended the reorganization of existin
UA-R-GC-1914-01-01-1988-02_Page-027
No full text6. Lon<1 Rnnqc Plilnn in<1 Tmr1(,lOr: nt.,ti.oll
This was a reportinq matter but not an urgent issue. The Administration
will report buck before "ny irnp1crnC'nta tiol!. is effected .
7. SABA Library
nuc hns now acquired ~lis lihrnry for its special collection. It
includes roughly 13,000 volullIe s , rnn lly cOlllpnrilble in qualit-y to the
Cresswell Collection. Sorne are '17th nncl mi1ny 18th century titles .
There will be a ' d:i,splay of books from t hp. collection at tl:8 meel:in<1 on
Thursday.
8. Accredita tion
There were \\0 major common t s to Ill.:l ke. The report of the nc:crcdi tfl tion
tenm was fuvoruble and <111. indic<1 tions . (, n~ thnt AUC will l:e rec(JlTlmenclcd
for r( ~ IIC'w .-\l of '\C Cl.'f'dl Lil j()lI.
t
9. Implementation of Board Decision of SRC
Dr. Toepfer presented his summary of discussions with the Center ' s
hea1, Dr. Hamamsy. The SRC needs to r edistribute staff. ~ plan must be
evolved for p~ ':i talizinq the Ccnt ~r . Dr. Hamamsy- is 63. The SRC I·d.ll
need new l eadership. It ,,;!lOuld also be 1I ,·.Jrr: closely :t;"elnt.co<l t o t:hc
academic departme nts of the univ e r s ity.
10. ppp I ssues
The committee concurred on u policy of 60~ permanent ::;tnLus in
te"chiJl<1,d('r"-lrt· III ('Jlt-.~~ ;\lId nO'f. ill Il n ll-t· ('; I( ~ llill q (lrp.,rtmcrits, n~t :it ' lillq nP
p osi ti o l\ ~' .l11 tll'-' :;I~t: U II tilt' 'i i tl'lt ' 1,.1~il ~i d '; 111 o Ule r c1epartli :!I1i:.::;, <Illd 111
r emova l of the Preside nt' s a uthority to qive a fourth year of leave .
f.
The meeting was adj ourned nt iO:35 A.M
A review of the natural enemies of beetles in the subtribe Diabroticina (Coleoptera: Chrysomelidae): implications for sustainable pest management
No full textDiabroticina is a speciose subtribe of New World Chrysomelidae (Subfamily Galerucinae: Tribe Luperini) that includes pests such as corn rootworms, cucumber beetles and bean leaf beetles (e.g. Diabrotica, Acalymma, Cerotoma species). The evolution and spread of pesticide resistance, the European invasion of Diabrotica v. virgifera LeConte, and possible development of resistance due to the large-scale deployment of Diabrotica-active Bt maize in North America have generated a sense of urgency in developing biological control options against Diabroticina pests. In the present study, we review available knowledge on biological control options, including 290 publications on natural enemy-Diabroticina associations in the New World. Several natural enemy species or groups appear to be promising candidates for control strategies with different ecological rationales. We propose that future research should pursue: (1) development of inundative biological control products, particularly mass-produced entomopathogenic nematodes and fungi, (2) understanding of specific natural enemies of Diabroticina larvae throughout the Americas and of adults particularly in higher altitudes of Central America or northern South America including potential classical biological control agents against D. v. virgifera; (3) enhancement of natural enemies through cultural practices, i.e., reduced tillage, reduced weed control, cover crops, diversified crop rotations or soil amendments. Research and action must be coordinated to accelerate the exploration of biological control options.CABI Europe Switzerland; EU Specific Support Action [022623
Genome scan of Diabrotica virgifera virgifera for genetic variation associated with crop rotation tolerance
No full textCrop rotation has been a valuable technique for control of Diabrotica virgifera virgifera for almost a century. However, during the last two decades, crop rotation has ceased to be effective in an expanding area of the US corn belt. This failure appears to be due to a change in the insect's oviposition behaviour, which, in all probability, has an underlying genetic basis. A preliminary genome scan using 253 amplified fragment-length polymorphism (AFLP) markers sought to identify genetic variation associated with the circumvention of crop rotation. Samples of D. v. virgifera from east-central Illinois, where crop rotation is ineffective, were compared with samples from Iowa at locations that the behavioural variant has yet to reach. A single AFLP marker showed signs of having been influenced by selection for the circumvention of crop rotation. However, this marker was not diagnostic. The lack of markers strongly associated with the trait may be due to an insufficient density of marker coverage throughout the genome. A weak but significant general heterogeneity was observed between the Illinois and Iowa samples at microsatellite loci and AFLP markers. This has not been detected in previous population genetic studies of D. v. virgifera and may indicate a reduction in gene flow between variant and wild-type beetles
UA-R-GC-1914-01-01-1988-02_Page-033
No full textTHE AMERICAN UNIVERSITY IN CAIRO
MINUTES FOR THE CAMPUS PLANNING COMMITTEE
Tuesday
,2:30 p.m.
February 2, 198 8
Trustees' Room
Present: Mr. Bacon, chairman; Mr. Crary, Mr. Hyd e , Dr.
Pedersen, Dr. Toepfer, Dean Brown, Dr. Helmy, Ms. Desforges,
Mr. Jensen, Mr. Pelowski,Mr. Shatla, Mr. Snaith, Mr s. Nalle.
1. Approval of the Agenda.
The agenda wa s approved.
2. Approval of the minutes of the last mee ting.
The minutes of the pr eviou s meeting were approved
a~'3 circulated.
J. Heliopolis.
The committee was presented with a paper
describing the status of the effort to purchase a building
for the Heliopolis Branch of the Center for Continuing and
and Adult Education. Dean Brown asked that the previous
board authorization for the purchase of a specific building,
given in November 1987, now be expanded to cover buildings
that would meet the several general charact er i stics
enumerated in the paper. The committee agreed to accept the
criteria set forth in the paper and voted to recommend that
the board authorize the administration to purchase a
building that meets those specifications providing it has
the same potential for cost recovery as the building
previously under consideration.
4. Sheikh Rihan Building.
A status report on the Sheikh Rihan Building' s
renovation was circulated. Vice - President Toepfer, chairman
of the committee preparing specifications for various areas
of the building, said he expects the entire renovation to be
complete in 18 months, with the ground flo or renovated for
use as Division of Public Service classrooms by the end of
the summer. Dr. Helmy said cost estimates for the project
were LE1.3 million, but that ultimately, with landscaping and
furnishings, the cost will probably be closer to LE2
million. Mr. Crary observed that a good use of the ground
floor would be as exhibit space. Dr. Pedersen replied that
AUC currently doesn't have much art, whil e Dr. Toepfer noted
that, although the ground floor might be used as an art
gallery in the long run, the pressing need for space in th e
s hort run militate s against such usage
- …
