Tidal Tails and Galaxy Evolution

We review recent results on the tidal structures of spiral galaxies. Topics included are general characteristics of tails; kinematics of tidal structures and dark haloes of host galaxies; frequency of tidal distortions at z~1.Comment: 5 pages, "Morphology and Dynamics of Stellar Systems: Star Clusters, Galactic Arms and Rings", Proc. JENAM-2000, in pres

Species composition and ecology of blood-sucking mosquitoes (Diptera, Culicidae) in Yakutia

The purpose of the research is to study the species composition and ecology of mosquitoes in Yakutia.Materials and methods. The research was performed for herd horses and cattle on pastures in Central, Western and Southern Yakutia in 2005–2021. Faunistic collections were made and the number of blood-sucking mosquito imago was recorded for animals using an entomological net with removable bags, while the average abundance rate of mosquitoes was calculated per 10 net movements in a figure-eight pattern around from 10 repetitions when studying the seasonal abundance dynamics and from 5 repetitions when studying the circadian activity rhythm.Results and discussion. In Yakutia, 15 species of blood-sucking mosquitoes of the family Culicidae were found that belong to three genera: Anopheles, Culiseta, and Aedes. Biotopes occupied by mosquito larvae of the genus Aedes include 74–126 specimens/m2. The first mosquitoes were recorded near an animal bait in the first decade of May. The mass mosquito flight period was observed from the third decade of June to the middle of the second decade of July. The total mosquitofl ight period for the season was 121–124 days. The flight of blood-sucking mosquitoes on the forest pasture continues around the clock, from the third decade of June to the middle of the second decade of July

Porto-hepatic hemodynamics in patients with destructive pancreatitis combined with liver failure

Extraorgan complications of acute destructive pancreatitis are registered in 60-95 % of patients. Liver failure is registered in one of the four patients with pancreatic necrosis. We analyzed the results of surgical treatment of 122 patients with acute destructive pancreatitis. We studied clinical indicators of liver failure in 103 (84.4 %) patients with acute pancreatitis. The development of portal hypertension with decrease in hepatic volume perfusion is an important element in the pathogenesis of acute pancreatitis and associated liver function abnormalities. In patients with severe and moderate liver failure, the reduction of blood flow in portal vein was registered. It was caused by reduce of portal vein diameter and decrease in linear blood flow velocity. Destructive pancreatitis is accompanied by liver failure with hyperbilirubinemia, increased activity of cytolytic enzymes, incoordination in protein and carbohydrate metabolism as its common manifestations. An important factor in the pathogenesis of liver failure is a reduction of porto-hepatic hemodynamics and as a consequence - hepatic hypoperfusion

A method for protecting herd horses from blood-sucking insects that ensures organic food production

The purpose of the research is to develop a method for protecting herd horses from dangerous blood-sucking dipterans that ensures organic meat production without pesticides.Materials and methods. Dangerous dipterans were collected and counted using an entomological net. The Diptera species identification was determined using the morphological keys. A new technology for protecting herd horses from harmful insects without pesticides used was implemented at Horobut LLC in the Megino-Kangalassky District, the Republic of Sakha (Yakutia) in 2021–2023. Pursuant to the Assignment and Regulations, a patent search was performed in the Russian scientific and technical literature on the subject “Develop methods for creating technologies to control and prevent animal diseases that ensure organic food production from conventional agricultural sectors in the Far North”.Results and discussion. The number of mosquitoes and horseflies that attack herd horses in Central Yakutia was established. In the morning and evening peaks, the number of mosquitoes for a 5-minute count was 397–456 mosquitoes belonging to 15 species of three genera: Aedes (Ochlerotatus), Culiseta and Anopheles. During a 15-minute count, the bait horse was attacked by 83 to 107 specimens of horseflies of 21 species and one subspecies of two genera, Hybomitra and Chrysops. For the first time in Central Yakutia, a method of protecting herd horses from attacks by blood-sucking insects was used with positive results without spraying animals with insecticides

Novel data about association of the functionally significant polymorphisms of the MMP9 gene with exfoliation glaucoma in the caucasian population of Central Russia

This study aimed to investigate the role of functionally significant polymorphisms of the MMP1, MMP3, and MMP9 genes in the development of exfoliation glaucoma in the Caucasian population of Central Russi

Deactivation kinetics of V/Ti-oxide in toluene partial oxidation

The deactivation kinetics of a V/Ti oxide catalyst were studied in partial oxidn. of toluene to PhCHO and PhCO2H at 523-573 K. The catalyst consists of a monolayer of VOx species, and after oxidative pretreatment, contains isolated monomeric and polymeric metavanadate-like vanadia species under dehydrated conditions as was shown by FT Raman spectroscopy. Under the reaction conditions via in situ DRIFTS, fast formation of adsorbed carboxylate and benzoate species was obsd. accompanied by disappearance of the band of monomeric species. Slow accumulation of maleic anhydride, coupling products and/or PhCO2H on the surface causes deactivation of the catalyst during the reaction. Temp.-programmed oxidn. after the reaction showed formation of high amts. of CO, CO2 and water. Rate consts. for the toluene oxidn. steps were derived via math. modeling of reaction kinetics at low conversion and const. O/toluene ratio of 20:1. The model allows prediction of deactivation dynamics, steady-state rates and selectivity. The highest rate const. was found for the transformation of PhCHO to PhCO2H, which explains the low yield of PhCO2H. [on SciFinder (R)

Photometric deprojection of edge-on galaxies

Photometric deprojection is used to determine the stellardisk and bulge parameters for several edgeon galaxies from the FGC catalog. The assumption that the galaxies of our sample belonging to the fourth (i.e., lowest) surfacebrightness class in the FGC are edgeon, lowsurfacebrightness (LSB) galaxies is considered.Comment: 6 pages including 3 figures. Have been published in Astronomy Letters, v.26, p.219, 2000 (Translated from Pis'ma v Astronomicheskiy Zhurnal, V.26, N.4, 2000, p.266.

NEURAL NETWORK MODEL FOR DETERMINING GRAVEL FRACTION TYPE IN TRUCK BODY

В строительной сфере применяют различные фракции щебня в качестве засыпных смесей. Учитывая, что стоимость щебня зависит от его вида, требуется автоматизированная система для проверки его типа и исключения человеческих ошибок. В данной работе предлагается метод классификации фракции щебня на изображении с помощью архитектуры EfficientNetb1 с использованием пространственного внимания (Spatial Attention), совмещенный с функцией потерь LDAM. Для обучения и тестирования модели использовался набор из 635 изображений, разделенный на 7 фракций щебня. Полученная модель показала высокую точность, достигнув уровня 97 %.In the construction industry, various fractions of gravel are used as aggregate materials. Considering that the cost of gravel depends on its type, an automated system is required to verify its type and eliminate human errors. This work proposes a method for classifying gravel fractions in images using the EfficientNetb1 architecture with the addition of Spatial Attention, combined with the LDAM loss function. A dataset of 635 images, divided into 7 gravel fractions, was used for training and testing the model. The resulting model demonstrated high accuracy, reaching a level of 97 %

Видовой состав и экология кровососущих комаров (Diptera, Culicidae) Якутии

The purpose of the research is to study the species composition and ecology of mosquitoes in Yakutia.Materials and methods. The research was performed for herd horses and cattle on pastures in Central, Western and Southern Yakutia in 2005–2021. Faunistic collections were made and the number of blood-sucking mosquito imago was recorded for animals using an entomological net with removable bags, while the average abundance rate of mosquitoes was calculated per 10 net movements in a figure-eight pattern around from 10 repetitions when studying the seasonal abundance dynamics and from 5 repetitions when studying the circadian activity rhythm.Results and discussion. In Yakutia, 15 species of blood-sucking mosquitoes of the family Culicidae were found that belong to three genera: Anopheles, Culiseta, and Aedes. Biotopes occupied by mosquito larvae of the genus Aedes include 74–126 specimens/m2. The first mosquitoes were recorded near an animal bait in the first decade of May. The mass mosquito flight period was observed from the third decade of June to the middle of the second decade of July. The total mosquitofl ight period for the season was 121–124 days. The flight of blood-sucking mosquitoes on the forest pasture continues around the clock, from the third decade of June to the middle of the second decade of July.Цель исследований – изучение видового состава и экологии комаров Якутии.Материалы и методы. Исследования выполнены в 2005–2021 гг. на пастбищах табунных лошадей и крупного рогатого скота Центральной, Западной и Южной Якутии. Фаунистические сборы и учёты численности имаго кровососущих комаров проводили на животных с помощью энтомологического сачка со съемными мешочками, при этом средний индекс обилия (ИО) комаров рассчитывали на 10 взмахов сачком восьмеркой «вокруг себя» из 10 повторностей при изучении сезонной динамики численности и из 5 повторностей – при изучении суточного ритма активности.Результаты и обсуждение. В Якутии обнаружено 15 видов кровососущих комаров семейства Culicidae, относящихся к трем родам: Anopheles, Culiseta, Aedes. Населенность биотопов личинками комаров рода Aedes составляет 74–126 экз./м2. Первых комаров около приманочного животного отмечали в первой декаде мая. Период массового лёта наблюдали с третьей декады июня до середины второй декады июля. Общая продолжительность лёта комаров за сезон составила 121–124 сут. Лёт кровососущих комаров на лесном пастбище с третьей декады июня до середины второй декады июля продолжается круглосуточно

БАЗА ДАННЫХ «ЭПИЗООТИЧЕСКИЙ МОНИТОРИНГ ПАРАЗИТАРНЫХ БОЛЕЗНЕЙ ЖИВОТНЫХ ЯКУТИИ», СОЗДАННАЯ ПО ПРОГРАММЕ NVU

According to the results of a long-term research conducted by the staff of the Laboratory of Parasitology at FSBSI Yakut Scientific Research Institute of Agriculture (Reshetnikov A.D. et al.)   a database of epizootic monitoring for parasitic diseases in farm and wild animals, humans and fish of Yakutia has been created.  The a.m. database is a set of independent materials collected in different years for  the purpose of  doctoral, master, postgraduate research as well as for the Research and Development plan of Yakut Scientific Research Institute of Agriculture (2000–2010).  По результатам многолетних исследований коллектива лаборатории паразитологии ГНУ ЯНИИСХ,  Решетниковым А.Д.  и др.,  создана  база данных по эпизоотическому мониторингу паразитарных болезней сельскохозяйственных и диких животных, человека и рыб Якутии, представляющая  совокупность самостоятельных материалов, выполненных в разные годы при выполнении докторских, кандидатских, аспирантских исследований, а также при выполнении плана НИОКР  ГНУ ЯНИИСХ СО РАСХН в 2000–2010 гг.