نتایج جستجو برای: make a morphological identification of aphids difficult

تعداد نتایج: 23302548  

Journal: :Proceedings of the Royal Society of London. Series B: Biological Sciences 1999

Journal: :Biljni lekar 2022

Aphids are often present in apple orchards Serbia. They represent a significant group of pests for which insecticides regularly used. The most important species are: Aphis pomi, spiraecola, Dysaphis devecta, plantaginea, spp., Rhopalosiphum insertum and Eriosoma lanigerum. paper provides basic data on the development aphids their morphology, biology, distribution harmfulness plants. A identific...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان - دانشکده ادبیات و علوم انسانی 1392

the construct of self-efficacy has received increasing attention in research over the past two decades. many studies have been carried out 1.3 significance of the study this study has pedagogical implications since improving students’ self- efficacy and autonomy is important for promoting actual performance on classroom academic tasks. in academic settings, it has been shown that self-effi...

Journal: :journal of crop protection 2012
ehsan rakhshani

the aphidiine parasitoids (hym., braconidae) attacking the pest aphids on various pome and stone fruit trees in different parts of iranwere studied. a total of 13 species belonging to seven genera of aphid parasitoids were identified in association with 17 aphid species on 10 different species of fruit trees. sixty nine tritrophic associations were detected from the studied area of which 25 ass...

F. Wang L. Fang,

In the fault diagnosis of automaton, the vibration signal presents non-stationary and non-periodic, which make it difficult to extract the fault features. To solve this problem, an automaton fault diagnosis method based on morphological component analysis (MCA) and ensemble empirical mode decomposition (EEMD) was proposed. Based on the advantages of the morphological component analysis method i...

F. Wang L. Fang,

In the fault diagnosis of automaton, the vibration signal presents non-stationary and non-periodic, which make it difficult to extract the fault features. To solve this problem, an automaton fault diagnosis method based on morphological component analysis (MCA) and ensemble empirical mode decomposition (EEMD) was proposed. Based on the advantages of the morphological component analysis method i...

Antonio Picarelli Caterina Urciuoli Marco Di Tola, Mariacatia Marino Marta Puzzono Rossella Casale

Background: Celiac disease is a common autoimmune disorder that is diagnosed based on clinical case identification, serological screening, and duodenal histology. However, the existence of mild clinical forms, such as seronegative cases with patchy atrophy and potential celiac disease, can make it difficult to determine a definitive diagnosis. The seronegative patients with celiac disease can i...

 جلیل مکارم, , حمیدرضا امیری, ,

Background: Total spinal anesthesia is a complication of lumbar epidural anesthesia following undiagnosed subarachnoid or subdural injection of local anesthetic. Although many achondroplastic dwarfs have a normal spine, catheter insertion may be more problematic with a narrow epidural space making a subarachnoid tap more probable.  Other malformations associated with achondroplasia, such as pro...

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