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ALEKTO ARVOHKAPALAGINING (THERETRA ALECTO L., SPHINGIDAE, LEPIDOPTERA) BIOLOGIK XUSUSIYATLARI
Get PDFAlecto moth - Theretra alecto is a pest of vineyards. The study of some biological characteristics of this species was conducted in vineyards established in Samarkand region (Uzbekistan). The purpose of the study is to determine the characteristics of this type of pest and to study measures to combat it. Insects were reared in field and laboratory conditions and the results of these scientific works are presented in the article. In the study of biological properties, simple thermohygrometers were used to determine temperature and humidity. The development of larvae was monitored. The longest development period corresponded to the L5 stage (8±1.5). The highest survival rate was observed in the fifth stage larvae (92.03±02.11%). The average biological cycle of female individuals was 42.10±08.37 days, and the average biological cycle of male individuals was 38.07±09.20 days. The sex ratio of individuals was 0.55. During the research, the positive and negative effects of humidity and temperature on the larval cycle of individuals were determined
TOJIKISTON QURUQLIK MOLLYUSKALARI (GASTROPODA, PULMONATA) NI O‘RGANISH NATIJALARI VA KELGUSIDAGI VAZIFALAR
Get PDFFor the first time, the fauna of land gastropod (Gastropoda) molluscs of the territory of Tajikistan was studied and its taxonomic composition was compiled. At present, 106 species of molluscs belonging to the pulmonary (Pulmonata) subclass have been identified in this area, and they belong to 36 genera, 15 subgenera, 20 families, and 1 family. From the composition of total molluscs: 13 species - Western Pamir region are recorded as new species for science. Differences between the species composition of the malacofauna of the mountain ranges of Northern and Southern Tajikistan have been identified. Subtropical, tropical species with tropical roots are recommended for thorough study
JANUBIY OROLBO‘YI KSILOFAG-HASHAROTLARI DOMINANT TURKUMLARINING (INSECTA:COLEOPTERA, ISOPTERA, LEPIDOPTERA, HYMENOPTERA, DIPTERA) BIOEKOLOGIK XUSUSIYATLARI
Get PDFThis article says that one of the main reasons for the reproduction of xylophagous insects is the fact that a large part of the natural biotope of the Southern Aral Sea is found in sandy-desert areas, which is an exceptional place for the development of pests
ИЗУЧЕНИЕ МЕТАМОРФОЗА КЛЕЩЕЙ ЧЕСОТОЧНОГО ЗУДНЯ SARCOPTES SCABIEI КАРАКУЛЬСКИХ ОВЕЦ
Get PDFThe article presents the results of a study of the metamorphosis of scabies mites Sarcoptes scabiei in
Karakul sheep. In experiments, the life cycle of development of scabies mites S. Scabiei in Karakul sheep from eggs to
adults is 15-16 days, which is less than 2-3 and 5 days in other regions of the world studied. This is explained by the
presence of favorable conditions for the development of scabies mites in these southern regions of the republi
PELOPHYLAX TERENTIEVI (MEZHZHERIN, 1992) (RANIDAE, PELOPHYLAX)NING GELMINTLARI FAUNASI
Get PDFIn this research work, all the helminths recorded in P. terentievi (Mezhzherin, 1992) found in the regions of southern Uzbekistan (Kashkadarya and Surkhondarya regions) were taxonomically analyzed, invasion extensiveness and intensity, abundance and dominance indices were presented. The helminth fauna of P. terentievi found in Uzbekistan is explained by the composition of Plathelminthes Schneider, 1873 type - 18 species, Acanthocephala Rudolphi, 1808 type - 6 species, Nematoda Rudolphi, 1808 type - 10 species
TUNLAM KAPALAKLARINING (LEPIDOPTERA:NOCTUIDAE) AHAMIYATI
Get PDFThis article provides information on the species diversity, occurrence areas, morphological characters of Owlet moths (Noctuidae), which are distributed in various agrotsenoses of Uzbekistan, as well as the extent to which owlet moths have been studied in Uzbekistan
О модели влияния загрязнений на иммунную систему: О модели влияния загрязнений на иммунную систему
No full textАннотация. Построена математическая модель процесса влияния загрязнений на иммуннуюсистему. Установлены априорные оценки, на основе которых доказана однозначная разрешимостьзадачи
Компьютерное моделирование двумерных нестационарных задач теплопроводности с учетом точечных источников тепла мкэ: Компьютерное моделирование двумерных нестационарных задач теплопроводности с учетом точечных источников тепла мкэ
No full textАннотацияВ статье рассматривается процесс теплообмена в механических системах. На основе методаконечных элементов исследуется решение двумерных нестационарных задач теплопроводностипри наличии точечных источников тепла. Для решения плоской задачи теплопроводностииспользуется треугольный конечный элемент с прямолинейными сторонами. Приводятся основныесоотношения для линейных треугольных конечных элементов с учетом влияния точечныхисточников тепла. Источник, заданный в конкретной точке плоскости, описывает нагреватель ввиде струны
3D trigonometrik funksiyalar grafiklarini yasash: 3D trigonometrik funksiyalar grafiklarini yasash
No full textPython dasturlash tili matplotlib kutubxonasi orqali osonlik bilan 3D funksiyalar grafiklarini yaratish imkoniyatiga egadir. Ushbu maqolada, Matplotlib ning mpl_toolkits.mplot3d modulidan foydalanib, qanday qilib 3D funksiyalar grafiklarini qanday yaratishni ko‗rsatib beramiz