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Register a new userدراسة السلوكية و البيئة الكيميائية للبحث عن الشريك الجنسي لدى حفار ساق الذرة الأوروبي (Ostrinia nubilalis Hübner ( Lepidoptera, Pyralidae
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Damascus University ورقة بحثية
Publication date
2006
fields
Plant Protecion
and research's language is
العربية
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Shamra Editor
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حددت الاستجابة السلوكية للفرمونات الجنسية في نفق الطيران لحشرة حفار ساق الذرة الأوروبـي nubilalis Ostrinia و قد أخذت الذكور من مجتمعات متميزة، و من أنماط بيئية مختلفة (ذكور جمعت من الطبيعة و أخرى ناتجة عن تربية كثيفة على وسط صناعي). أُجريت هذه الدراسـة فـي مخـابر المعهـد الوطني للبحوث الزراعية-فرساي فرنسا عام 2004 . و لتحديد هل لاختلاف نسب مكونات الفرمون الجنسي المختلفة تأثير في سلوكية ذكور حشرة حفـار ساق الذرة الأوروبي اِستُخدمتْ كبسولات فرمونية صنعية تشمل سلالة E و سـلالة Z . أمـا الفرمونـات الجنسية الطبيعية فكان مصدرها الإناث التابعة للسلالة Z.
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References used
Alford D.V. (1994). Ravageurs des végétaux d'ornament.arbres, arbustes, fleurs .INRA Editions
Baker, T.C.and Linn C.E.J (1984). Wind Tunnels in Pheromone research (chapter 3). Technique in pheromone research. H.A. Miller, Spring-Vertag
Baker, T.C. (1990). Upwind flight and casting flight: complimentary phasic and tonic systems used for location of sex Pheromone sources by male moths. International symposium on olfaction and taste X. K.B.D ving.Oslo, Graphic communication systems: 18-25
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The task of semantic code search is to retrieve code snippets from a source code corpus based on an information need expressed in natural language. The semantic gap between natural language and programming languages has for long been regarded as one
of the most significant obstacles to the effectiveness of keyword-based information retrieval (IR) methods. It is a common assumption that traditional'' bag-of-words IR methods are poorly suited for semantic code search: our work empirically investigates this assumption. Specifically, we examine the effectiveness of two traditional IR methods, namely BM25 and RM3, on the CodeSearchNet Corpus, which consists of natural language queries paired with relevant code snippets. We find that the two keyword-based methods outperform several pre-BERT neural models. We also compare several code-specific data pre-processing strategies and find that specialized tokenization improves effectiveness.
This study was conducted at the field of the research station Sianow of General Commission
for Scientific Agricultural Research at Lattakia, to evaluate the susceptibility of 6 strains of maize (
IL.257-09(P1), IL.298-09(P2 ) , IL.286-09 (P3 ), IL.
255-09( P4), IL.262-09 (P5), IL.228-09 (P6 )),
against the natural infestation by large corn stem borer , Sesamia cretica Led. They were
Compared with control (Ghouta 82).because it is the most growing variety in Syria.
It was evaluated the susceptibility of 6 lines of maize, and fifteen
maize crosses, against by large corn stem borer, Sesamia cretica Led
under conditions Industrial infection. A study of the correlation
coefficient showed linear relationship of yields by 100- Kernel weight.
نفذ البحث خلال الموسمين المتتالين 2008و 2009 في محطة المريعية التابعة لمركز البحوث العلمية الزراعية بدير الزور
The study was done at the field research station Sianow of General Commission for
Scientific Agricultural Research at Lattakia, to evaluate the susceptibility of 6 strains of maize
Zea mays. L, and fifteen maize crosses obtained by half Diallel cro
ss, against under conditions
Industrial infection by large corn stem borer , Sesamia cretica Led. The experience was
designed at randomized complete blocks (R.C.B.D).
Strain IL.257-09)P1( expressed general high capacity to the attributes of Number of
kernels per row(3.089), number of holes (-1.261). Strain IL.298-09 (P2) also expressed general
high capacity to the attributes of Ear length (0.717), Intensity of damage (-0.432),% of yield
loss (-6.022). strain IL.286-09 (P3) general high capacity to the attributes of diameter Ear
(0.292), number of rows per ear (2.806). Strains IL.255-09 )P4) )0.036( and IL.228-09)P5)
(0.969) also expressed general high capacity to the attributes of grain yield. Strain IL.262-
09(P6) expressed general high capacity to the attributes of 100- Kernel weight (1.942),
infestation grain yield) 0.784), tunnel length (-5.629), Percentage of dead hearts (-1.132).
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