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The Balance Of Common Vs. Rare: A Study Of Dragonfly (Insecta: Odonata) Assemblages In The Brazilian Pampa Biome, Samuel Renner, Eduardo Périco, Marina Schmidt Dalzochio, Göran Sahlén Dec 2022

The Balance Of Common Vs. Rare: A Study Of Dragonfly (Insecta: Odonata) Assemblages In The Brazilian Pampa Biome, Samuel Renner, Eduardo Périco, Marina Schmidt Dalzochio, Göran Sahlén

Neotropical Biodiversity

We surveyed dragonflies (Odonata) at 87 sites in the anthropologically modified Pampa biome of southern Brazil to evaluate how regionally rare and common species form species assemblages in habitats with different water physiochemistry, habitat structures, and other environmental variables. We classified 9 out of the 90 species encountered as regionally common and 59 as regionally rare. A discriminant analysis confirmed that localities with only a few common species were characteristic in the set of rare species present, while localities housing more common species showed no clear pattern. A PCA revealed that a subset of the common species were strongly positively …

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Does Bergmann’S Rule Apply In Bats? Evidence From Two Neotropical Species, Dennis Castillo-Figueroa Dec 2022

Does Bergmann’S Rule Apply In Bats? Evidence From Two Neotropical Species, Dennis Castillo-Figueroa

Neotropical Biodiversity

Bergmann’s rule is one of the most vigorously debated ecogeographic patterns but has rarely been examined in Neotropical bats. Herein, I examined Bergmann’s rule in Carollia perspicillata and Artibeus lituratus along an elevation gradient of 2500 m at both inter- and intraspecific level. I measured 384 specimens from collections belonged to C. perspicillata (89 ♀, 102 ♂) and A. lituratus (89 ♀, 104 ♂). The size of C. perspicillata increased with increasing elevation and decreasing temperature, whereas A. lituratus showed the converse pattern. For both species, females did not differ between elevation categories, contrary to males that were larger above …

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Molecular Characterization Of Mahogany Tree (Swietenia Macrophylla King, Meliaceae) In The Remnant Natural Forest Of Ecuador, Ricardo Limongi Andrade, José Pico-Mendoza, Eduardo Morillo, Johanna Buitrón, Santiago Meneses, Bernardo Navarrete, Miryan Pinoargote, Basilio Carrasco Dec 2022

Molecular Characterization Of Mahogany Tree (Swietenia Macrophylla King, Meliaceae) In The Remnant Natural Forest Of Ecuador, Ricardo Limongi Andrade, José Pico-Mendoza, Eduardo Morillo, Johanna Buitrón, Santiago Meneses, Bernardo Navarrete, Miryan Pinoargote, Basilio Carrasco

Neotropical Biodiversity

The Swietenia macrophylla King (Meliaceae) mahogany tree is widely spread in the neotropics. In Ecuador, it has a wide distribution range from the coastal zone to the Amazon. The mahogany tree is an endangered species due the overexploitation of the high commercial value of its wood. This study is aimed to characterize the Simple Sequence Repeat (SSR) variability of 123 trees selected from six provinces of Ecuador. The results showed that the natural mahogany population had a low level of genetic diversity (A = 6.9; Ho = 0.39; He = 0.43) and a significant heterozygous deficit inbreeding coefficient (F = …

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Seasonal Turnover Of Avian Community Assembly In A Highly Fragmented Tumbesian Dry Forest Of Southwestern Ecuador, Vanessa E. Luzuriaga-Aveiga, Diego F. Cisneros-Heredia Dec 2022

Seasonal Turnover Of Avian Community Assembly In A Highly Fragmented Tumbesian Dry Forest Of Southwestern Ecuador, Vanessa E. Luzuriaga-Aveiga, Diego F. Cisneros-Heredia

Neotropical Biodiversity

Tropical dry forests are among the most threatened and yet the most biodiverse Neotropical ecosystems. However, current patterns of biological occupancy in these forests remain poorly studied. Here, we document the diversity, patterns of seasonal turnover and change of species composition over time of birds in a highly exploited but protected tropical dry forest of southwestern Ecuador, Bosque Protector Puyango. Using a combination of mist netting, song recording and direct observations, we surveyed the study site over a 2-month period of fieldwork during both the dry and rainy seasons. We then performed a literature review of the species reported in …

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Evaluation Of Somatic Indexes In The Endangered And Endemic Killifish Tlaloc Hildebrandi (Cyprinodontiformes: Profundulidae), Manuel J. Anzueto-Calvo, Ernesto Velázquez-Velazquez, Gorgonio Ruiz-Campos, Brenda G. Cruz Maza, Sara E. Domínguez-Cisneros Dec 2022

Evaluation Of Somatic Indexes In The Endangered And Endemic Killifish Tlaloc Hildebrandi (Cyprinodontiformes: Profundulidae), Manuel J. Anzueto-Calvo, Ernesto Velázquez-Velazquez, Gorgonio Ruiz-Campos, Brenda G. Cruz Maza, Sara E. Domínguez-Cisneros

Neotropical Biodiversity

Tlaloc hildebrandi is a small (<130 mm) freshwater fish endemic to Southwest Mexico and is listed as endangered through habitat loss and invasive species. We determine and compare the parameters of the length–weight relationship, relative weight, and condition factor among different populations of the endemic killifish, T. hildebrandi. Fulton’s condition factor (K), relative weight (Wr), and the length–weight relationship were estimated for three killifish populations throughout its distribution range in the highlands of Chiapas, México. The Wr was significantly lowest in fishes where there are higher anthropogenic activities. The somatic indexes and the length–weight relationships for T. hildebrandi are hereby published for the first time in both the scientific literature and databases, such as Fishbase.

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Biología Reproductiva De Hatcheria Macraei (Bagre De Torrente) En El Área Natural Protegida La Ciénaga, En El Centro Oeste De Argentina, Agustina Valenzuela, Fabricio Gómez, Juan Carlos Acosta Dec 2022

Biología Reproductiva De Hatcheria Macraei (Bagre De Torrente) En El Área Natural Protegida La Ciénaga, En El Centro Oeste De Argentina, Agustina Valenzuela, Fabricio Gómez, Juan Carlos Acosta

Neotropical Biodiversity

The northwestern region of Argentina has several gaps in ichthyogeographic knowledge and there are still bodies of water without records of the species that inhabit them. When planning mitigation projects or conservation or management actions, little knowledge of the biology of a species presents itself as a restriction. Therefore, the objective is to know the reproductive biology of the torrent catfish (H. macraei) in the Natural Protected Area La Ciénaga, San Juan, with the purpose of generating basic information as a tool for the future management of these populations. The torrent catfish, Hatcheria macraei (Girard, 1855) is a Siluriformes that …

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Integrating Biochemical And Behavioral Approaches To Develop A Bait To Manage The Invasive Yellow Paper Wasp Polistes Versicolor (Hymenoptera, Vespidae) In The Galápagos Islands, Mariana Bulgarella, Alejandro E. Mieles, Jacqueline Rodríguez, Yesenia Campaña, Georgia M. Richardson, Robert A. Keyzers, Charlotte E. Causton, Philip J. Lester Dec 2022

Integrating Biochemical And Behavioral Approaches To Develop A Bait To Manage The Invasive Yellow Paper Wasp Polistes Versicolor (Hymenoptera, Vespidae) In The Galápagos Islands, Mariana Bulgarella, Alejandro E. Mieles, Jacqueline Rodríguez, Yesenia Campaña, Georgia M. Richardson, Robert A. Keyzers, Charlotte E. Causton, Philip J. Lester

Neotropical Biodiversity

It is estimated that more than 500 species of insects have been introduced to the Galápagos Islands via human activities. One of these insect invaders is the yellow paper wasp, Polistes versicolor (Olivier) (Hymenoptera: Vespidae), a social wasp native to continental South America. In Galápagos, these wasps are voracious predators of insect larvae, compete with native species for insect prey or for floral resources and are a human nuisance. Wasp suppression methods currently in use are inefficient and attract non-target species, calling for the development of species-specific attractants that can be used in baits to lure and kill wasps. To …

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Primer Registro Del Polluelo Y Nuevos Datos Del Nido Del Autillo Rojizo (Megascops Ingens) (Strigiformes: Strigidae) En Zamora Chinchipe, Sureste De Ecuador, Leonardo Ordóñez-Delgado, Freddy Ramon Castillo, Angel Pineda Díaz Dec 2022

Primer Registro Del Polluelo Y Nuevos Datos Del Nido Del Autillo Rojizo (Megascops Ingens) (Strigiformes: Strigidae) En Zamora Chinchipe, Sureste De Ecuador, Leonardo Ordóñez-Delgado, Freddy Ramon Castillo, Angel Pineda Díaz

Neotropical Biodiversity

No abstract provided.

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Variación Intraespecífica De Carollia Brevicaudum Y Carollia Perspicillata (Phyllostomidae: Chiroptera) De Perú Y Ecuador, Dennisse Ruelas, Víctor Pacheco Dec 2022

Variación Intraespecífica De Carollia Brevicaudum Y Carollia Perspicillata (Phyllostomidae: Chiroptera) De Perú Y Ecuador, Dennisse Ruelas, Víctor Pacheco

Neotropical Biodiversity

Los murciélagos colicortos Carollia brevicaudum y C. perspicillata son dos de las especies de filostómidos más abundantes y ampliamente distribuidos en el Neotrópico. Debido a esto, diversos autores han encontrado variación intraespecífica a lo largo de su distribución, principalmente en tamaño corporal y coloración. Dado a que no hay un consenso en la magnitud de la variación intraespecífica, en este estudio evaluamos los patrones de variación de siete poblaciones de C. brevicaudum (n = 185) y C. perspicillata (n = 190) de poblaciones de Perú y Ecuador. Las poblaciones se delimitaron en base a las principales cuencas, río Amazonas y …

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How Do Assemblages Of Epigeal Araneae And Coleoptera Respond To Changes In Habitat Structure Caused By Sugar Cane Crops In Northern Argentina?, Hb Macagno, Ax González-Reyes, Ja Corronca, Sm Rodríguez-Artigas, Ge Flores Dec 2022

How Do Assemblages Of Epigeal Araneae And Coleoptera Respond To Changes In Habitat Structure Caused By Sugar Cane Crops In Northern Argentina?, Hb Macagno, Ax González-Reyes, Ja Corronca, Sm Rodríguez-Artigas, Ge Flores

Neotropical Biodiversity

In Northwest Argentina, nothing is known about the relationship of Araneae and Coleoptera with sugar cane crops. Using pitfall traps in three continuous native forest sites (N) and three native forest windbreaks surrounded by sugar cane crops (W) in the province of Salta, we assessed a)- whether the native diversity of epigeal Araneae and Coleoptera in the Chaco Serrano forest changes as a result of the fragmentation of the habitat caused by the sugar cane plots, and b)- whether the diversity of predatory species increases in native forest windbreaks as a consequence of the contribution of species that come from …

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Una Nueva Especie De Pristimantis (Anura: Strabomantidae) De La Provincia Del Azuay, Andes Sur De Ecuador, Juan C. Sánchez-Nivicela, Eduardo Toral-Contreras, Verónica L. Urgiles Dec 2022

Una Nueva Especie De Pristimantis (Anura: Strabomantidae) De La Provincia Del Azuay, Andes Sur De Ecuador, Juan C. Sánchez-Nivicela, Eduardo Toral-Contreras, Verónica L. Urgiles

Neotropical Biodiversity

En este estudio, basándonos en evidencias morfológicas y moleculares, describimos una nueva especie del género Pristimantis que habita en las montañas y valles áridos de la provincia del Azuay, incluyendo zonas urbanas y periurbanas de la ciudad de Cuenca. La nueva especie se destaca por presentar una textura dermal externa fuertemente granulada, una papilla proyectada en la punta del hocico y un canto de advertencia que consiste en series combinadas de tres y dos notas, Morfológicamente, la nueva especie es similar con P. cajamarcensis, P. ceuthospilus, P. jimenezi, P. lojanus, P. phoxocephalus y P torresi, por presentar una quilla en …

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Influence Of Predator Density In Foraging Behavior And Microhabitat Choice On Litter-Dwelling Scorpions, Vinicius B. Pessoa, Geraldo J. B. Moura, André F. A. Lira Dec 2022

Influence Of Predator Density In Foraging Behavior And Microhabitat Choice On Litter-Dwelling Scorpions, Vinicius B. Pessoa, Geraldo J. B. Moura, André F. A. Lira

Neotropical Biodiversity

The presence of a predator can cause behavioral changes in its prey, such as decreased foraging activity. Previous studies have indicated that the scorpion Ananteris mauryi has the ability to identify the chemical traces of its intraguild predator Tityus pusillus, causing it to reduce its exploratory activity. In this study, the foraging activities of A. mauryi in a natural environment with different densities of T. pusillus were compared. The study was carried out through active searches from 19:00 to 22:00 in five fragments of the Atlantic Forest in Pernambuco, Brazil, one having a low density of T. pusillus and four …

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Cooperative Harassment Strategy By The European Starling To Usurp Cavities And Reproductive Cost For The Neotropical Green-Barred Woodpecker, Paula A. Gerstmayer, Virginia Monges, Adrián Jauregui, Martín A. Colombo, Luciano N. Segura Dec 2022

Cooperative Harassment Strategy By The European Starling To Usurp Cavities And Reproductive Cost For The Neotropical Green-Barred Woodpecker, Paula A. Gerstmayer, Virginia Monges, Adrián Jauregui, Martín A. Colombo, Luciano N. Segura

Neotropical Biodiversity

The European Starling (Sturnus vulgaris) is a cavity-nesting bird with great invasive potential. As a result of human intervention, this bird is now distributed across all continents (except Antarctica) and its distribution range is increasing at an alarming rate. The European Starling was introduced to Argentina in 1983 and is currently distributed across almost the entire country. It is considered one of the hundred most damaging invasive species in the world and constitutes a serious competitive threat to native cavity-nesting birds. Interactions between European Starlings and cavity-nesting birds generally have negative consequences on native bird populations, although there are still …

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Movement And Habitat Use Of Three High Andean Rodent Species (Cricetidae: Sigmodontinae) In Andean Páramos Of Ecuador, Ariatna Villarreal, Ricardo Zambrano-Cevallos, Jorge Brito, Santiago F. Burneo Dec 2022

Movement And Habitat Use Of Three High Andean Rodent Species (Cricetidae: Sigmodontinae) In Andean Páramos Of Ecuador, Ariatna Villarreal, Ricardo Zambrano-Cevallos, Jorge Brito, Santiago F. Burneo

Neotropical Biodiversity

The movements and habitat use of three species of Sigmodontine rodents (Akodon mollis, Phyllotis haggard and Thomasomys paramorum) from the high Andes of Ecuador were evaluated using the spool-and-line technique in four transects. The floristic composition was analyzed at sampling sites to explain how these three species of Sigmodontine rodents use the vegetation as a habitat. Rodents were captured using live Sherman traps and equipped with a spool-and-line device. Each thread trail was traced, and their nests, feeders and shelters were recorded using GPS receivers. Also, the construction materials, nest morphology and shelters used during foraging, and the food resources …

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Carbon Stock And Dynamic In The Middle Xingu Forests At Eastern Amazonia, José Farias Costa, Emil José Hernández Ruz, Graciliano Galdino Alves Dos Santos Dec 2022

Carbon Stock And Dynamic In The Middle Xingu Forests At Eastern Amazonia, José Farias Costa, Emil José Hernández Ruz, Graciliano Galdino Alves Dos Santos

Neotropical Biodiversity

Studies on the quantification and spatial distribution of stored carbon, as well as the potential for carbon uptake by forests, are of great importance. We assessed the spatial distribution and dynamic of carbon in forest plots in the Middle Xingu. These plots are part of the vegetation monitoring area of the Belo Monte Dam. We estimated the biomass of trees with diameter at breast height (DBH) ≥10 cm using an allometric equation with forest inventory data in the eastern Amazonian region in the Xingu River area. We evaluated the vegetation structure and carbon stock dynamic in 2012, 2014, and 2016, …

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Mutational Analysis Of Egfr Mutations In Non-Small Cell Lung Carcinoma-An Indian Perspective Of 212 Patients, Amrit Kaur Kaler, Khushi Patel, Harshali Patil, Yash Tiwarekar, Bijal Kulkarni, Meenal Hastak, Nivetha Athikari, Samrudhi Rane, Ankita Nikam, Smita Umarji, Imran Shaikh, Sandeep Goyle, Rajesh Mistry Dec 2022

Mutational Analysis Of Egfr Mutations In Non-Small Cell Lung Carcinoma-An Indian Perspective Of 212 Patients, Amrit Kaur Kaler, Khushi Patel, Harshali Patil, Yash Tiwarekar, Bijal Kulkarni, Meenal Hastak, Nivetha Athikari, Samrudhi Rane, Ankita Nikam, Smita Umarji, Imran Shaikh, Sandeep Goyle, Rajesh Mistry

Publications

Lung cancer is the world's leading cause of cancer-related deaths. Epidermal growth factor receptor (EGFR) is one of the critical oncogenes and plays a significant role in tumor proliferation and metastasis. Patients with sensitizing mutations in the EGFR gene have better clinical outcomes when treated with tyrosine kinase inhibitors (TKI). This study expands our knowledge of the spectrum of EGFR mutations among lung cancer patients in the Indian scenario. This is a retrospective descriptive study of all newly diagnosed patients with lung cancer in tertiary care hospital in India. All the samples were subjected to real-time PCR (q-PCR) analysis and …

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Medical Ethics Principles Underscore Advocating For Human Papillomavirus Vaccine, Sally W Vernon Dec 2022

Medical Ethics Principles Underscore Advocating For Human Papillomavirus Vaccine, Sally W Vernon

Faculty, Staff and Student Publications

Studies have consistently shown that vaccination rates against human papillomavirus (HPV) lag far behind other adolescent vaccinations recommended at the same age, resulting in exposing adolescents to unnecessary future risk of infection, and genital and head and neck cancers. Studies also have demonstrated that a major barrier to vaccination is lack of a strong provider recommendation. Factors that providers offer for failing to give a strong recommendation range from perception that the child is not at risk or the need to explain that the vaccine is not mandated (lack of equity and justice) or respect for parental autonomy. We look …

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Medical Ethics Principles Underscore Advocating For Human Papillomavirus Vaccine, Sally W Vernon Dec 2022

Medical Ethics Principles Underscore Advocating For Human Papillomavirus Vaccine, Sally W Vernon

Faculty, Staff and Student Publications

Studies have consistently shown that vaccination rates against human papillomavirus (HPV) lag far behind other adolescent vaccinations recommended at the same age, resulting in exposing adolescents to unnecessary future risk of infection, and genital and head and neck cancers. Studies also have demonstrated that a major barrier to vaccination is lack of a strong provider recommendation. Factors that providers offer for failing to give a strong recommendation range from perception that the child is not at risk or the need to explain that the vaccine is not mandated (lack of equity and justice) or respect for parental autonomy. We look …

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Estimation Of Causal Effect Of Treatment Via Fuzzy Regression Discontinuity Designs, Sajad Sammer Abd Al-Razzaq, Mohammed Jasim Mohammed Dec 2022

Estimation Of Causal Effect Of Treatment Via Fuzzy Regression Discontinuity Designs, Sajad Sammer Abd Al-Razzaq, Mohammed Jasim Mohammed

Journal of Economics and Administrative Sciences

In some cases, researchers need to know the causal effect of the treatment in order to know the extent of the effect of the treatment on the sample in order to continue to give the treatment or stop the treatment because it is of no use. The local weighted least squares method was used to estimate the parameters of the fuzzy regression discontinuous model, and the local polynomial method was used to estimate the bandwidth. Data were generated with sample sizes (75,100,125,150 ) in repetition 1000. An experiment was conducted at the Innovation Institute for remedial lessons in 2021 for …

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The Impact Of Management By Walking Around On The Strategic Renewal Of Business Organizations (Field Research In A Sample Of Excellent Grade Hotels - In Baghdad), Maha Fadel Ibrahim, Salah Aldeen Kareem Al-Kubaisi Dec 2022

The Impact Of Management By Walking Around On The Strategic Renewal Of Business Organizations (Field Research In A Sample Of Excellent Grade Hotels - In Baghdad), Maha Fadel Ibrahim, Salah Aldeen Kareem Al-Kubaisi

Journal of Economics and Administrative Sciences

This work aims to show the nature of the relationship between management by walking around (the independent variable) and strategic renewal (the dependent variable), as well as it shows the effect of the independent variable on the dependent variable. Questionnaire items were considered the main tool for data collection by three basic aspects. The first involved the personal data of the respondents, while the second included items related to management by walking in five dimensions, and the third is strategic renewal items by addressing four dimensions. The tourism sector, while the community has six Excellent grade hotels was taken into …

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Comparison Of Robust Circular S And Circular Least Squares Estimators For Circular Regression Model Using Simulation, Huda Hadib Abbas, Suhail Najim Abood Dec 2022

Comparison Of Robust Circular S And Circular Least Squares Estimators For Circular Regression Model Using Simulation, Huda Hadib Abbas, Suhail Najim Abood

Journal of Economics and Administrative Sciences

In this paper, the Monte-Carlo simulation method was used to compare the robust circular S estimator with the circular Least squares method in the case of no outlier data and in the case of the presence of an outlier in the data through two trends, the first is contaminant with high inflection points that represents contaminant in the circular independent variable, and the second the contaminant in the vertical variable that represents the circular dependent variable using three comparison criteria, the median standard error (Median SE), the median of the mean squares of error (Median MSE), and the median of …

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Recent Trends In Mineral Processing Based On Density And Particle Size–A Review, Ahmed Sobhy Dec 2022

Recent Trends In Mineral Processing Based On Density And Particle Size–A Review, Ahmed Sobhy

Mining Engineering Faculty Research & Creative Works

Most mineral beneficiation development in the world focus on size and density-based separation technologies. In recent years, ore size-based and density-based separation technologies have attracted more consideration to obtaining rough or final high-quality products. Due to the dissimilarity of physical properties like particle size and density, valuable and gangue minerals can be segregated via size-based and density-based separation technologies. Removing the impurities and recovering the target minerals are accomplished by size-based separation technologies alone or are usually followed by cleaning processes utilizing density-based separation abilities. The density variation among valuable and gangue minerals leads to dissimilarities in settling velocity in …

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Penggunaan Tanah Masyarakat Untuk Kepentingan Penempatan Tiang Listrik Pln Berdasarkan Perspektif Hukum Perjanjian, Lolita Adhyana Joedo Dec 2022

Penggunaan Tanah Masyarakat Untuk Kepentingan Penempatan Tiang Listrik Pln Berdasarkan Perspektif Hukum Perjanjian, Lolita Adhyana Joedo

Jurnal Hukum & Pembangunan

PLN dalam menyalurkan listrik menggunakan tanah milik orang termasuk untuk memasang tiang listrik. Penggunaan tanah tersebut atas ijin dari Pemilik Tanah. Dalam perkembangannya tanah mengalami peralihan hak dan daerah lokasi tiang listrik PLN telah berkembang pesat, yang berdampak masyarakat merasa terganggu dengan kehadiran tiang listrik yang lebih dulu ada, sehingga meminta tiang listrik dipindahkan. Permintaan pindah tiang listrik PLN telah menjadi polemik, karena masyarakat keberatan harus menanggung biaya pindah tiang listrik. Pembebanan biaya tersebut disebabkan pekerjaan pindah tiang listrik membutuhkan biaya pekerjaan dan kompensasi yang harus dibayar oleh PLN kepada masyarakat di area yang terdampak pemadaman listrik akibat permintaan pindah …

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Manufacturing Of Instrument Structures From Formed Silicide Films, I R. Bekpulatov Dec 2022

Manufacturing Of Instrument Structures From Formed Silicide Films, I R. Bekpulatov

Technical science and innovation

This work provides information on the formation of the main part of thermal radiation receivers. In addition, the article defines and creates optimal modes for creating targets for magnetron sputtering from higher manganese silicide (Mn4Si7) and cobalt monosilicide (CoSi). As is known, the device is formed from a two - type film, where the Mn4Si7 film gives the p - type, and the CoSi film gives the n - type. Films were formed using these targets by magnetron sputtering and their electrophysical properties were studied. The results obtained showed that the resulting films …

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Preparation Of Azomethine Derivatives (Schif Bases) Chitosan Apis Mellifera, A S. Mengliev, G A. Ikhtiyarova Dec 2022

Preparation Of Azomethine Derivatives (Schif Bases) Chitosan Apis Mellifera, A S. Mengliev, G A. Ikhtiyarova

Technical science and innovation

Chitin and chitosan should be considered as derivatives of cellulose. The basis for such an approach to these polysaccharides is their chemical structure. The macromolecular chains of these polymers are formed by glucopyranose cycles, which, being connected by β- (1→4) glucosidic bonds, form linear polymer chains. The biological functions and mechanical properties of these polysaccharides are largely determined by the conformation of macromolecules and the distribution of reactive groups in them. Due to the unique properties of chitin and chitosan, they are becoming increasingly important in the practical and especially in the medical and biological activities of mankind. The aim …

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Laboratory Analyzes For Determining The Antioxidant Activity Of Dried Red Hawthorn Fruits, T T. Raxmanova, N A. Afanaseva, Sh A. Sultanova Dec 2022

Laboratory Analyzes For Determining The Antioxidant Activity Of Dried Red Hawthorn Fruits, T T. Raxmanova, N A. Afanaseva, Sh A. Sultanova

Technical science and innovation

This article analyzes the drying process of hawthorn fruit found in mountainous regions of our country. Since red hawthorn fruit is considered one of the main medicinal products, it is important to dry it while preserving its antioxidant properties. Blanching technology was used in a convective drying device for drying while maintaining the antioxidant properties of the object. In the process of blanching, a solution of ordinary water and citric acid was used. 1 and 1.5% solution of citric acid solution was selected. Blanching technology was used before drying the hawthorn fruit. Red hawthorn fruit was dried until 15% moisture …

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Analysis Of Methods Of Construction And Application Of Modern Anti-Radar Missiles, A S. Solonar, P A. Khmarski, B M. Mukhammedov, G Sh Tuganov Dec 2022

Analysis Of Methods Of Construction And Application Of Modern Anti-Radar Missiles, A S. Solonar, P A. Khmarski, B M. Mukhammedov, G Sh Tuganov

Technical science and innovation

The analysis of methods of construction and application of modern anti-radar missiles (ARM) is carried out. The analysis allowed us to identify the most distinctive features of ARM such as: high flight speed (600-1200 m/s), limited launch range, different flight paths and it is oriented towards the attacked radar, small effective distribution surface (ESR), due to a sharp increase in the weight and size characteristics of the homing head of the homing head outside the frequency range (from 0.5 to 40 GHz), radio electronic means of the ARM are not created, the large range and high speed of tuning the …

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Analysis Of Possible Causes Of Industrial Injuries And Accidents At Coal Industry Enterprises, F U. Otabekov, M Z. Naimova Dec 2022

Analysis Of Possible Causes Of Industrial Injuries And Accidents At Coal Industry Enterprises, F U. Otabekov, M Z. Naimova

Technical science and innovation

In this article, the issues that a person may face unfortunate events due to a certain reason due to the influence of various dangerous and harmful factors in the course of his life activities are resolved. Depending on the type and degree of exposure or the cause of the accident, the type and degree of injury may also vary. In most cases, injuries and damages occur suddenly and can lead to unexpected and unexpected consequences. Let's imagine that an unfortunate event happened by chance. In this situation, many people lose their senses, start to panic, hurry, become overly nervous or …

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Intelligent Approach To Power System Management During Well Drilling In Terms Of Environmental Impact, N N. Makhmudov, K M. Sulitanofu Dec 2022

Intelligent Approach To Power System Management During Well Drilling In Terms Of Environmental Impact, N N. Makhmudov, K M. Sulitanofu

Technical science and innovation

An autonomous hybrid power system is an intelligent power installation that provides electricity to isolated consumers without being connected to the power grid. The introduction of autonomous hybrid power systems in the oil and gas industry is considered as an option to improve energy and environmental security. As a rule, oil and gas fields are located remotely and off the grid, and therefore electricity is generated using diesel generators. This article discusses the possibility of reducing emissions of pollutants into the atmosphere by using an autonomous hybrid installation as a source of electrical energy.

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Evaluation Of Energy Efficiency Of Photoelectric Heat Batteries With Mechanism Of Solar Observation, M N. Tursunov, X Sabirov, I A. Yuldoshev, U R. Xolov Dec 2022

Evaluation Of Energy Efficiency Of Photoelectric Heat Batteries With Mechanism Of Solar Observation, M N. Tursunov, X Sabirov, I A. Yuldoshev, U R. Xolov

Technical science and innovation

Cooling of the rear surface of photoelectric batteries (PEB) was investigated by attaching a newly designed heat collector made of parallel channel cellular polycarbonate to the rear surface in order to improve the electrical and thermal efficiency in this research work. The experiment was conducted on June 7, 2022 at the Heliopolygon of the Physical-Technical Institute of Tashkent city (latitude: +41,34 (41°20'23"N), longitude: +69,3 (69°17'36"E). 2 340 W monocrystalline silicon PEBs(photoelectric batteries) were used as experimental devices. The rear surface of the first is equipped with a cooling …

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