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Search Results: 1 - 10 of 83 matches for " Sahra Ghavami "
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Investigation Fauna and Density of Population of Spiders in the Desert and Pomegranate Orchards in Tehran and Semnan Provinces
Sahra Ghavami
Pakistan Journal of Biological Sciences , 2008,
Abstract: The present study was carried out to consideration the spider`s fauna and abundance of spiders in the desert and pomegranate orchards in Tehran and Semnan provinces, during 2007. Specimens were collected from desert and pomegranate orchards by pitfall trap, shaking tree, pans, bottle and aspirator and were taken to the laboratory after labeling. A total of 1231 specimens were classified in 45 species and 36 genera belonged to 17 families. Among them 4 spider species were new for Iranian spider fauna. The families Lycosidae, Linyphiidae, Gnaphosidae and Theridiidae had height population in the study areas. Specimens were immature in the winter and spring and they were adult in the summer. The dominant species in all of study regions was Pardosa agrestis (Westring).
Spider Fauna in Caspian Costal Region of Iran
Sahra Ghavami
Pakistan Journal of Biological Sciences , 2007,
Abstract: The current study investigated spider fauna of Caspian Costal region of Iran (Guilan, Mazandaran and Golestan provinces) during 2005-2006. Spiders were collected from on the ground and under the stones and grasses by bottle, aspirator, Pitfall trap and pans and from branches, leaves and trunks of different trees and bushes by Steiner and Baggiolini method and insect net. They transferred to the laboratory and classified in 52 species and 51 genera belonged to 20 families. Thirty species, 13 genera and 2 families are reported for the first time from Iran, as follows: Family Agelenidae: Agelena labyrinthica (Clerck, 1757), Cicurina sp., Family Araneidae: Agalenatea redii (Scopoli, 1763), Araniella inconspicua (Simon, 1874), Araniella alpica (C.L. Koch, 1869), Araneus diadematus Clerck, 1757, Cercidia sp., Cyclosa conica (Pallas, 1772), Hypsosinga sanguinea (C.L.Koch,1845), Family Clubionidae: Clubiona neglecta O.P. Camridge, 1862, Family Amaurobiidae, Family Eresidae: Eresus sp., Dresserus sp., Family Gnaphosidae: Aphantaulax sp., Micaria sp., Family Metidae: Zygiella x-notata (Clerck,1757), Family Miturgidae: Cheiracanthium erraticum (Walckenaer, 1802), Cheiracanthium pennyi O.P.Cambridge,1873, Family Linyphiidae: Microlinyphia sp., Family Lycosidae: Alopecosa pulverulenta (Clerck, 1757), Pardosa amentata (Clerck, 1757), Pardosa agrestis (Westring, 1861), Pardosa monticola (Clerck, 1757), Family Oxyopidae: Oxyopes salticus (Hentx, 1802), Family Philodromidae: Philodromus cespitum (Walckenaer, 1802), Family Pholcidae: Psilochorus simoni (Berland, 1911), Pholcus phalangioides (Fuesslin, 1775), Family Salticidae: Salticus scenicus (Clerck, 1757), Family Tetragnathidae: Tetragnatha montana,Simon, 1874, Tetragnatha javana (Thorell, 1890), Family Theridiidae: Dipoena prona (Menge, 1868), Steatoda albomaculata (Degeer, 1778), Theridion impressum C. L.Koch, Theridion simile C.L.Koch,1836, Family Thomisidae: Misumena vatia (Clerck, 1757), Thanatus formicinus (Clerck, 1757), Thanatus striatus C.L.Koch, 1845, Xysticus cristatus (Clerck, 1757).
Renew Checklist of Spiders (Aranei) of Iran
Ghavami Sahra
Pakistan Journal of Biological Sciences , 2006,
Abstract: To date 244 species of spiders belonged to 33 families have been recorded from Iran. Sixty two species, 4 genera and 8 families are reported for the first time from Iran in 2002-2006. Spiders were collected from branches, leaves, flowers and trunks of trees and bushes, on the ground, under the stones and grasses by Steiner and Baggiolini method, bottle, aspirator, pitfall trap, pans and insect net. Geolycosa altera Roewer, 955 was found to be junior synonym of Honga radiata (Latreille, 817). Four species of Lycosid spiders were transferred to Trochosa: T. austrocaspia (Roewer, 955), T. flavichelis (Roewer, 955), T. nava (Roewer, 955), T. persia (Roewer, 955).
Abundance of Spiders (Arachnida: Araneae) in Olive Orchards in Northern Part of Iran
Sahra Ghavami
Pakistan Journal of Biological Sciences , 2006,
Abstract: The current study investigated spiders fauna and abundance of olive orchards in Guilan, Ghazvin, Golestan, Mazandaran and Zanjan provinces during 2002-2003. Valid spider keys identification used for species determination. Four speices Frontinellina fruntetorum (C.L. Koch, 1981) (Linyphidae), Thyene imperialis (Rossi,1846), Salticus scenicus (Clerk, 1757) (Salticidae) and Thomisus onustus, Walkenaer, 1806 (Thomisidae) of spider of the collection determined as dominant species. Uniform distribution and dominant spider species only recorded for F. fruntetorum in all provinces. Spiders abundance researchs at three olive orchards in Guilan, Ghazvin and Zanjan provinces. Population abundance of spider recorded by stroking to 8 olive branches of 30 trees at 15 days interval wicth onset from May to October. Among collected natural enemies fauna insects and spiders fauna 42.8% was belong to spider specimens and their population flactuation was varied from 25.4 to 60.7% in month of May to October, respectively.
Determination Range Susceptibility of Anopheles Stephensi Mamassani Strain in Fars Province to DDT, Malathion and Fenitrothion
Sahra Ghavami,Hosein Ladoni
Journal of Research in Health Sciences , 2011,
Abstract: Background: An. Stephen's is one of the main malaria vectors in the south of Iran. This anopheles is a kind of resistance to some organophesphorous and organochlorine insecticides. So An. Stephensi is collected in a village called "Bekesh Dodangeh" in the south of Iran to determine the degree of susceptibility to DDT 4%, malathion 5% and fenitrothion 1% insecticides. Methods: The testing methods were used according to standard WHO. The tests were carried out on blood fed adult females in lots of 25 adults in 4 replicates Results: An. Stephensi touched to malathion 5% and fenitrothion 1% insecticides in 20, 30 and 60 minutes exposure time showed the mortality effect on them as follows: Malathion (86.8%, 84.2% and 98.02%), Fenitrothion (57.1%, 60.3% and 97.02%). The result of the tests showed An. Stephensi is susebtibility to malathion and tolerant to fenitrothion. However, this Anophel had resistance to Malathion in Mamassani; therefore, the reason of this increase susceptibility was not used malathion insecticide in this region. Tolerant cause to fenitrothion was non-used this insecticide in Noorabad Mamassani and little concentration and unsufficient exposure time. Also we tested susceptibility of An. Stephensi to DDT in 20, 30 and 60 minutes. The result of mortality testes were 38.4%, 56.3% and 37.1% degree testes KD were 7.6%, 13.9% and 39.7%. So An. Stephensi is resistant to DDT insecticide. This anopheles has resistant background in Mamassani.
An Investigation of Spider Fauna of Olive Orchards in Northern Part of Iran
Sahra Ghavami,Ahmadi Damghan Mohammad,Soody Saeid,Ghanad amooz Saeid
Pakistan Journal of Biological Sciences , 2007,
Abstract: The current study investigates spider fauna of olive orchards in Guilan, Ghazvin, Mazandaran, Zanjan and Golestan provinces during 2002-2003. Spiders were collected from branches, leaves, trunks, on the ground and under the stones and grasses by Steiner and Baggiolini method, bottle, aspirator, pitfall trap, pans and insect net and transfered to laboratory and classified in 45 species and 46 genera belonged to 18 families. Twenty five species, 9 genera and 2 families are reported for the first time of olive orchards.
Investigation of Abundance and Determination of Dominant Species of Spider Species in Iranian Cotton Fields
Sahra Ghavami,Gholam Ali Amin,Masood Taghizadeh,Zakaria Karimian
Pakistan Journal of Biological Sciences , 2008,
Abstract: In the present study, density of abundance of spiders explored and dominant species determined in the cotton major fields i.e., Ardebil, Fars, Golestan and Tehran provinces in 2003-2004. Through regular weekly, specimens collected by shaking bushes and they were carried out for the further study to the Araneae laboratory. A total of 632 specimens were classified in 76 species, 59 genera belonged to 19 families. Twenty seven species and 15 genera of them were new records for spider's fauna of Iran. The collected spiders counted and frequency of each species and dominant species determined. The following species Thanatus formicinus (Clerck), Cheiracanthium pennyi (O.P. Cambridge), Aulonia albimana (Walckenaer), Neoscona adianta (Walckenaer) were dominant species in Tehran, Ardebil, Fars and Golestan cotton fields, respectively.
PERCEPOLIS: Pervasive Cyberinfrastructure for Personalized Learning and Instructional Support  [PDF]
Ali R. Hurson, Sahra Sedigh
Intelligent Information Management (IIM) , 2010, DOI: 10.4236/iim.2010.210067
Abstract: This paper describes PERCEPOLIS, an educational platform that leverages technological advances, in particular in pervasive computing, to facilitate personalized learning in higher education, while supporting a networked curricular model. Fundamental to PERCEPOLIS is the modular approach to course development. Blended instruction, where students are responsible for perusing certain learning objects outside of class, used in conjunction with the cyberinfrastructure will allow the focus of face-to-face meetings to shift from lecture to active learning, interactive problem-solving, and reflective instructional tasks. The novelty of PERCEPOLIS lies in its ability to leverage pervasive and ubiquitous computing and communication through the use of intelligent software agents that use a student’s academic profile and interests, as well as supplemental information such as his or her learning style, to customize course content. Assessments that gauge the student’s mastery of concepts are used to allow self-paced progression through the course. Furthermore, the cyberinfrastructure facilitates the collection of data on student performance and learning at a resolution that far exceeds what is currently available. We believe that such an infrastructure will accelerate the acquisition of knowledge and skills critical to professional engineering practice, while facilitating the study of how this acquisition comes about, yielding insights that may lead to significant changes in pedagogy.
On the Performance of Blind Chip Rate Estimation in Multi-Rate CDMA Transmissions Using Multi-Rate Sampling in Slow Flat Fading Channels  [PDF]
Siavash GHAVAMI, Bahman ABOLHASSANI
Wireless Sensor Network (WSN) , 2009, DOI: 10.4236/wsn.2009.12011
Abstract: This paper considers blind chip rate estimation of DS-SS signals in multi-rate and multi-user DS-CDMA systems over channels having slow flat Rayleigh fading plus additive white Gaussian noise. Channel impulse response is estimated by a subspace method, and then the chip rate of each signal is estimated using zero crossing of estimated differential channel impulse response. For chip rate estimation of each user, an algorithm which uses weighted zero-crossing ratio is proposed. Maximum value of the weighted zero crossing ratio takes place in the Nyquist rate sampling frequency, which equals to the twice of the chip rate. Furthermore, bit time of each user is estimated using fluctuations of autocorrelation estimators. Since code length of each user can be obtained using bit time and chip time ratio. Fading channels reduce reliability factor of the proposed algo-rithm. To overcome this problem, a receiver with multiple antennas is proposed, and the reliability factor of the proposed algorithm is analyzed over both spatially correlated and independent fading channels.
Zum Verh ltnis von K rper und Recht – ein neuer Begründungsbedarf Life between Body and Law
Sahra Dornick
querelles-net , 2008,
Abstract: Gibt es einen Anspruch des Menschen auf physische und psychische Integrit t? Wie hat sich ein solcher Anspruch entwickelt und auf welchen Grunds tzen kann er beruhen? Das Menschenrecht auf die Unversehrtheit des K rpers wird im vorliegenden Sammelband sowohl aus geschichtlicher, literaturtheoretischer, politischer als auch aus islamwissenschaftlicher, soziologischer und juristischer Perspektive beleuchtet. Dabei setzen sich die Autoren und Autorinnen mit den derzeit vorliegenden Argumentationsfiguren zur Begründung der Menschenrechte als elementarem Recht auseinander und leisten mit ihren Analysen, Kritiken und Konfrontationen einen innovativen Beitrag zu den aktuellen Debatten um Folter, k rperlicher Unversehrtheit und Verantwortung. Do humans have an entitlement to physical and psychic integrity? How did such entitlement develop and on what basic tenants does it rest? The collected volume at hand illuminates the human right to physical integrity from the perspective of history, literary theory, politics as well as Islamic studies, sociology, and law. The authors approach current arguments justifying human rights as a fundamental right. Their analyses, critiques, and confrontations provide an innovative contribution to the current debates on torture, physical integrity, and accountability.
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