Unfavorable Environmental Factors Research Articles

Pengaruh Intellectual Capital Terhadap Kinerja Keuangan pada Bank Pembiayaan Rakyat Syariah (BPRS) di Indonesia dengan Model Value Added Intellectual Capital (VAIC) Periode 2016-2020

Competition in the Islamic banking industry is tight, so the competence of Islamic banking human resources must increase. This needs to be done to increase the lack of resources who have studied and received good education and training, but when they return due to unfavorable environmental factors, the results of education and research be wasted.
 This study aims to determine the effect of Intellectual Capital on Financial Performance in Islamic People's Financing Banks (BPRS) in Indonesia with the Value Added Intellectual Capital (VAIC) Model. There is research data using monthly time series data taken in the 2016-2020 period. Data analysis technique uses PLS (Partial Least Square) with processing using Warp-PLS 7.0 Software.
 The test results using the SEM-PLS approach show that Intellectual capital IB-VACA has a positive and significant effect on the financial performance of Indonesian Islamic banking. By obtaining a path coefficient value of 0.482 with a p value of P

Is there a downside to plant ecological services in the city? Influences of particulate matter on the two-spotted spider mite (Tetranychus urticae) foraging on the small-leaved lime in urban conditions

The aim of this research was to examine how particulate matter (PM) pollution affects the life history of the two-spotted spider mite (TSSM), Tetranychus urticae (Trombidiformes: Tetranychidae), in modelled urban conditions. For this purpose, experimental populations of TSSM were cultured on the foliage of small-leaved lime (Tilia cordata) contaminated with PM at intensities corresponding to differing city zones such as a park, a busy road and an industrial area. The control samples in the study were washed, unpolluted leaves. The spider mite was selected as a model organism due to its cosmopolitan distribution, broad host spectrum, resistance to a variety of pesticides and food-intake mode involving cell-content sucking, while T. cordata is widely planted in cities and has demonstrated a considerable capability for PM capture. Data on the longevity and mortality of particular instars and on female fecundity at different pollution levels were collected and statistically evaluated. Concentrations of PM typical for roads and industrial city zones significantly reduced total female fecundity (avg. 53.9 and 55.9 eggs/female, respectively, vs 79.2 in control), which entailed a slower population increase, while the survival rate of particular developmental instars (P = 0.52) and fertility curves (P = 0.19) remained unchanged. The presence of PM caused physiological effects in the mites, despite the lack of direct consumption of the pollutant by adult and juvenile instars. Considering the incomparable resilience of TSSM to unfavourable environmental factors, it is predicted that the detrimental influence of PM on other representatives of urban arthropods may be even more severe. The results suggest that there is a need for further investigations into the ecological ramifications of air purification provided by urban green spaces.

Метод снижения рисков в сельском хозяйстве, связанных с засухами, с учетом вероятности их появления

The increase in mean and extreme temperatures against the background of almost unchanged precipitation in the south of the European territory of Russia (ETR) leads to a number of changes affecting agricultural production. The combination of such unfavorable environmental factors as high temperature and water shortage can have a relatively short-term, but strong impact on the crop industry with long-term consequences. It is expected that, taking into account current trends in climate change, the foothill and plane zones in the south of the ETR will be in an arid zone. Thus water scarcity has been and remains a critical factor in determining crop production in the region. The paper discusses the mechanisms of the impact of climate change on agriculture. It is noted that the relevance of developing effective and cost-effective for practical use methods to reduce risks in this industry associated with extreme weather events, including droughts, is increasing and becoming an essential condition for ensuring the country's food security. The features of information support of the problem of developing models for reducing risks associated with droughts are noted. A method for reducing agricultural losses associated with this weather event is outlined. It is based on exploiting the different vulnerabilities of crops by hazardous weather events. The possibilities of practical use of the method under conditions of climate change are touched upon, and the main tasks arising along this path are discussed. The results of model calculations, which were carried out in order to study the effectiveness of the method, are presented. It is noted that, on the basis of the proposed approach, flexible and quickly responding to changes in the conditions for the functioning of agriculture, systems can be created to reduce the loss of agriculture from adverse weather events.

Common Glow-Worm <i>Lampyris noctiluca</i> (Coleoptera, Lampyridae) in the Khanty-Mansiysk Autonomous Okrug – Ugra

The distribution of common glow-worm Lampyris noctiluca (Linnaeus, 1767) in Western Siberia is not thoroughly studied. The report presents the data on findings of this species in the Khanty-Mansiysk Autonomous Okrug Ugra. All registrations of beetles known to us were made in the western part of the okrug (Sovetskiy and Kondinskiy districts) in Malaya Sosva Nature Reserve in the area of the city of Sovetskiy, the villages of Yagodnyy, Listvenichnyy, Mezhdurechenskiy (survey data) and Staryy Katysh. Most likely, the outermost part of the area of common glow-worm with the northern border near Malaya Sosva Nature Reserve is located in the denoted region. The explored species absent on the significant area to the east probably due to the severe bogging of the region in this part. To the north, in addition to the biotopic component, other unfavorable environmental factors may have a limiting effect: weather elements and illumination. Limitative influence of human economic activity is not excluded in the habitats of insects. As a rare, not thoroughly explored and sporadically distributed species, common glow-worm can be included in the regional Red Data Book.

Ulcerative colitis in the practice of a family doctor

Ulcerative colitis is a chronic disease that is caused by a genetic predisposition and occurs under the influence of unfavorable environmental factors on the intestinal microflora. Having an inflammatory nature, it manifests itself in the form of erosive hemorrhagic and ulcerative destructive changes in the mucous membrane of the rectum and colon. The prevalence of ulcerative colitis is widespread, but it is especially common in economically developed countries. Issues of timely diagnosis cause difficulties among practicing physicians. This is explained by the fact that ulcerative colitis manifests itself not only with classic intestinal symptoms, but also often debuts with various extraintestinal manifestations. Modern medicine provides doctors with many methods for high-quality diagnosis of this pathology. This article presents current aspects of the pathogenesis, clinical picture, diagnosis, and treatment of ulcerative colitis from the perspective of evidence-based medicine.

Determination of the longevity of collection samples oftomato (Solanum lycopersicum L.) using the accelerated seedageing test and assessment of their storage potential for ex situ coservation

The article is dedicated to the analysis of the effectiveness of the accelerated aging method (AA) of seeds for assessing the stability of tomato collection specimens and determining their longevity during ex situ conservation in active collections of the plant genetic bank. The use of this method, which consists in the incubation of seeds under increased temperature and air humidity, allows adequately modeling the impact of unfavorable environmental factors and predicting their effect on seed resistance. The storage potential (SP) of seeds for their medium-term storage in the plant genetic bank was determined according to various morphophysiological parameters of tomato seeds and seedlings (germination energy and seed germination, root length, dry and wet root biomass, electrolyte yield). Tomato varieties with high and medium storage potential were identified, i.e. gradation was carried out according to this important complex indicator. The obtained results indicate that the accelerated seed ageing test allows to assess differences in resistance between different varieties of important crop species.

B-Chromosome Variability in Plants and Animals under Extreme Environments

A review of data on B-chromosomes in populations of various systematic groups of plants and animals from their extreme habitats – the borders of the range and areas of the range exposed to unfavorable environmental factors is given. The analysis showed a rather similar picture of the distribution of B chromosomes in species from extreme habitats: there is a tendency to increase the number, occurrence and polymorphism of B chromosomes, which is accompanied by changes in the karyotype, genomic and chromosomal anomalies in their carriers. B chromosomes are often found in species with wide ranges. The possible adaptive role of B chromosomes in the vital activity of the organism and the evolution of genomes is discussed.

On salt stress, PLETHORA signaling maintains root meristems.

Salt stress is one of the unfavorable environmental factors to affect plants. Salinity represses root growth, resulting in reduced biomass of agricultural plants. Little is known about how plants maintain root growth to counteract salt stress. The AP2-domain transcription factors PLETHORA1/2 (PLT1/2) act as master regulators in root meristem maintenance in Arabidopsis. In this study, we report that the salt overly sensitive (SOS) pathway component SOS2 regulates PLT1/2 at the post-transcriptional level. Salt-activated SOS2 interacts and phosphorylates PLT1/2 through their conserved C-terminal motifs to stabilize PLT1/2, critical for root apical meristem maintenance under salt stress. The phospho-mimetic version of PLT1/2 restored meristem and primary root length reduction of sos2-2 and plt1-4 plt2-2 mutants on salt treatment. Moreover, SOS2-mediated PLT1/2 phosphorylation improves root growth recovery after salt stress alleviation. We identify a SOS2-PLT1/2 core protein module that is required for protecting primary root growth and meristem maintenance from salt stress.

The reaction of fiber flax (<i>Linum usitatissimum</i> L.) to the content of aluminum ions <i>in vitro</i> culture

Relevance. The influence of unfavorable environmental factors is one of the reasons for the low realization of the biological capabilities of modern flax varieties in production conditions. Cultivation of flax on soils with strongly acidic (pHKCl 4.5 and below) and neutral (pHKCl over 6.0) reactions leads to a significant decrease in the productivity of fiber and seeds. Biotechnological methods are effective in creating new forms with altered features and properties.Methods. The studies were conducted in vitro. The source material is seeds and hypocotyl segments of flax varieties-dolguntsa Impulse, Phoenix, Leader, S-108, Soyuz. The selective agent in the studies was aluminum salts in the form of AlCl3 at concentrations of 0 (control — H2O dist. / nutrient medium (without selective agent), 44 mg/l, 64 mg/l, 84 mg/l.Results. The toxic effect of AlCl3 on the germination of fiber flax seeds, the formation of primary roots and seedlings — hypocotyls of the varieties used was revealed. The indicator of the value indicating the length of primary roots in germinated fiber flax seeds decreased on the seventh day with an increase in the concentration of the AlCl3 solution. The highest sensitivity to the content of aluminum ions was shown by varieties S-108, Leader and Soyuz. This was expressed in a decrease in the length of the hypocotyl with an increase in the concentration of aluminum ions in the solution. In genotypes in all variants of studies on a selective medium containing AlCl3, a morphogenic callus was formed. The frequency of formation of morphogenic calli was different depending on the concentration of AlCl3 in the cultivation medium. A trend towards a decrease in the number of morphogenic cells with an increase in the concentration of aluminum ions was observed in all varieties. In less sensitive varieties (Impulse and Phoenix), the amount of morphogenic callus formed was higher than in more sensitive ones (C-108, Soyuz, Leader). Under selective conditions, shoots of flax of the studied varieties resistant to AlCl3 were obtained.

Prediction and Early Diagnosis of Bronchial Asthma in Workers Specializing in Argon Welding Based on Fuzzy Mathematical Models

The purpose of research is to develop fuzzy mathematical models for predicting and early diagnosis of bronchial asthma developing under the influence of toxic substances released during argon welding providing an acceptable quality of decision-making for practical medicine Methods. The paper uses the method of synthesis of fuzzy mathematical models of forecasting and early diagnosis of occupational diseases provoked by the action of industrial pesticides developed in the South-Eastern Federal University on the basis of the methodology of synthesis of hybrid fuzzy decision rules allowing to take into account the multiplicative nature of the links between the risk of occurrence and development of occupational diseases with the concentration and time of exposure to harmful chemicals. Results. Using the chosen method, fuzzy hybrid models of forecasting and early diagnosis of industrial bronchial asthma in welding workers were obtained in which, in addition to the effects of ozone, dust and fibrogenic risk factors on the human body, unfavorable environmental and ergonomic factors combined with individual health characteristics are taken into account. In the course of modeling and expert evaluation, it was shown that the obtained mathematical model provides confidence in the correct prognosis of the occurrence of industrial bronchial asthma in welding workers at least 0.85, and early diagnosis at least 0.9. Conclusion. Hybrid fuzzy models of forecasting and early diagnosis of industrial bronchial asthma in welding workers caused by the presence of ozone and fibrogenic dust in combination with individual, environmental and ergonomic risk factors were obtained, the quality of which was tested on representative control samples. During the control check, it was shown that the prognostic model provides diagnostic specificity and sensitivity at the level of 0.87, and the early diagnosis model - at the level of 0.92, which is a good result for the class of tasks under consideration.

Penicillium citrinum NP4 mediated production, extraction, physicochemical characterization of the melanin, and its anticancer, apoptotic, photoprotection properties

The biopolymer melanin is reported for many biological processes to secure biological entities over unfavorable environmental factors. The present study aimed to isolate soil fungi and screen for melanin production. The potent fungus was identified as Penicillium citrinum NP4 based on morphological and molecular characterization with accession number OP070954. Using standardized tyrosine broth conditions melanin was produced by NP4 and extracted by acidification. Extracted melanin exhibited maximum UV–visible absorption at 223 nm; FTIR peaks validate the occurrence of CO, CN, CH, and CC functional groups present in the indole/pyrrole structure. TLC analysis exhibited a prominent single band with a Retardation factor (Rf) of 0.68, resonance peaks at 6.621, 7.061, and 7.185 ppm exhibited aromatic hydrogen in the indole/pyrole system in 1H NMR. The EDX peaks confirm the presence of carbon, oxygen, sulfur, and nitrogen elements which are the key factors in melanin structure, and TGA reports the thermal stability of the melanin. An in silico molecular docking approach on lung cancer causing proteins EGFR (3g5z), KRAS (6vc8), and TP53 (8 dc4) were conducted to determine the active binding sites of the melanin, and proteins exhibited binding affinity of −8.0 for 3g5z, −9.8 for 6vc8, and − 10.1 kcal/mol for TP53 protein with melanin. Anticancer activity of the melanin showed significant inhibition of A549 cells in dose-dependent mode with significant IC50 of 65.49 μg/mL; apoptotic examination reveals 46.14 % apoptosis for melanin and 46.36 % apoptosis for standard drug (cisplatin). Melanin exhibited good photoprotection capacity at 1 μg/mL. In conclusion, the extracted melanin exhibited significant results on many biological applications and it can be used in the pharmaceutical field to avoid chemical-based drugs.

Characterization of materials in the late 15th-century animal encyclopedia at an Ottoman Library and detection of deterioration products by HPLC–DAD

There are many manuscripts in institutions that preserve and exhibit cultural heritage such as museums, galleries, and libraries. These manuscripts are of great value because of their witnessing to the past and the historical and cultural significance they have accumulated. In addition to the organic nature and the natural aging of the paper, which is generally used as the primary carrier material in these objects, other materials used in the manuscripts are an obstacle to their preservation and reaching future generations. In this study, the 62-volume animal encyclopedia, which is known to be written in the name of animals, plants, and Islamic science at the end of the fifteenth century (1487–1501) and added to an Ottoman Library, was examined analytically. A total of 40 samples consisting of paper, ink, dye, and leather samples were analyzed using high performance liquid chromatography with a diode array detector (HPLC–DAD). After all, information on material characterization and deterioration product(s) was obtained. As a result of the analysis, vanillic acid, and its derivatives due to the natural aging of the paper and chrysophanic acid and its derivatives caused by fungi, which are the result of unfavorable environmental factors, were determined. It was concluded that the ink used in the manuscripts was iron-gall ink. In addition, it was determined that madder, weld, buckthorn, redwood, rhubarb, or dock plants were used as dyestuffs in paper and leather samples. Also, it was deduced that the leather samples were tanned with the vegetable tanning method using tannins. Since tannic acids were determined in the dyestuff analysis of three paper samples with ink, elemental analysis was performed on black ink by scanning an electron microscope with energy-dispersive X-ray spectroscopy (SEM–EDX). As a result of this analysis, the element of iron has been detected and it has been confirmed that the black ink is iron-gall ink. It is inevitable that this study will guide conservation experts in restoration and conservation studies.

PROSPECTS OF THE USE OF NARROW-LEAFED LAVENDER IN LANDSCAPING OF THE PODILLIA REGION

The article presents scientific and experimental studies on the study of the prospects for the use of narrow-leaved lavender (Lavandula angustifolia Mill.) in the conditions of Podillia. The ecological and decorative value of lavender for modern landscaping has been proven. A systematic literary analysis of sources was carried out and information on the distribution, morpho-biological features of narrow-leaved lavender in Ukraine and the world was summarized. On the basis of the obtained data, the scientific foundations of the introduction of promising taxa into culture and the peculiarities of reproduction were developed, their productive potential was established, and ways of practical use in modern green construction were proposed. It has been proven that for the creation of modern garden compositions in the conditions of Podillia, the most expedient to use are narrow-leaved lavender cultivars (Gem, Alba, Munstead, Rosea), which adapted well to growing conditions, were practically not damaged by pests and were not affected by diseases, and were sufficiently resistant to unfavorable environmental factors. Recommendations for their cultivation have been developed, features of flowering biology and prospects for use in landscaping have been established. Their high evaluation according to a set of criteria indicates the perspective and suitability for cultivation in the conditions of Podillia, as well as the value for various options for the use of narrow-leaved lavender: flower beds, borders, mix borders, landscape-type compositions and their reduced versions imitating natural groupings. In the conditions of Podillia, for the first time, the biological and ecological bases of growing narrow-leaved lavender were developed, as a result of which the species diversity of cultural phytocenoses was enriched and the assortment of new flowering plants was expanded due to their introduction into crops.

Multiple roads lead to Rome: unique morphology and chemistry of endospores, exospores, myxospores, cysts and akinetes in bacteria.

The production of specialized resting cells is a remarkable survival strategy developed by many organisms to withstand unfavourable environmental factors such as nutrient depletion or other changes in abiotic and/or biotic conditions. Five bacterial taxa are recognized to form specialized resting cells: Firmicutes, forming endospores; Actinobacteria, forming exospores; Cyanobacteria, forming akinetes; the δ-Proteobacterial order Myxococcales, forming myxospores; and Azotobacteraceae, forming cysts. All these specialized resting cells are characterized by low-to-absent metabolic activity and higher resistance to environmental stress (desiccation, heat, starvation, etc.) when compared to vegetative cells. Given their similarity in function, we tested the potential existence of a universal morpho-chemical marker for identifying these specialized resting cells. After the production of endospores, exospores, akinetes and cysts in model organisms, we performed the first cross-species morphological and chemical comparison of bacterial sporulation. Cryo-electron microscopy of vitreous sections (CEMOVIS) was used to describe near-native morphology of the resting cells in comparison to the morphology of their respective vegetative cells. Resting cells shared a thicker cell envelope as their only common morphological feature. The chemical composition of the different specialized resting cells at the single-cell level was investigated using confocal Raman microspectroscopy. Our results show that the different specialized cells do not share a common chemical signature, but rather each group has a unique signature with a variable conservation of the signature of the vegetative cells. Additionally, we present the validation of Raman signatures associated with calcium dipicolinic acid (CaDPA) and their variation across individual cells to develop specific sorting thresholds for the isolation of endospores. This provides a proof of concept of the feasibility of isolating bacterial spores using a Raman-activated cell-sorting platform. This cross-species comparison and the current knowledge of genetic pathways inducing the formation of the resting cells highlights the complexity of this convergent evolutionary strategy promoting bacterial survival.

Application of Genetic Resources in the Development of New Lithuanian Vegetable Cultivars

The investigations of genetic resources in Lithuania started in 1924. Collections including more than 110 samples of different vegetable species have been accumulated and continue to expand. The breeding program is focused on productivity, quality traits and biochemical composition, and tolerance of unfavorable environmental factors in changing climates. Currently, over 95 cultivars and hybrids of vegetables have been released, about 40 of which are included in the EU Common catalogue of varieties of vegetable species. From 2012 to 2021, twelve cultivars were developed at the Lithuanian Research Centre for Agriculture and Forestry, seven of which are fruit vegetables, four are root crops, and two are in the onion group. The breeding direction was to increase the sustainable production of vegetables and improve the quality of the products by using national and adapted genetic resources as valuable parental forms. For 10 years, vegetable plant hybrids and cultivars were developed to meet commercial cultivars' market requirements. The tomato cultivars 'Ainiai' H, 'Adas' H, 'Auksiai' H, 'Alvita' and cucumber cultivar 'Roliai' are distinguished by a good biochemical composition and taste, while the sweet pepper cultivar 'Gabija' has high productivity and fruit quality. The carrot hybrids 'Ieva', 'Rokita', 'Jola', garlic cultivar 'Dangiai', and onion cultivar 'Joriai' are distinguished by their productivity and good storage ability. The Jerusalem artichoke cultivar 'Sauliai' has tubers with white skin and the colour of the flowers is yellow.

Gut Microbiome Variation Along A Lifestyle Gradient Reveals Threats Faced by Asian Elephants

The gut microbiome is closely related to host nutrition and health. However, the relationships between gut microorganisms and host lifestyle are not well characterized. In the absence of confounding geographic variation, we defined clear patterns of variation in the gut microbiomes of Asian elephants (AEs) in the Wild Elephant Valley, Xishuangbanna, China, along a lifestyle gradient (completely captive, semicaptive, semiwild, and completely wild). A phylogenetic analysis using the 16S rRNA gene sequences highlighted that the microbial diversity decreased as the degree of captivity increased. Furthermore, the results showed that the bacterial taxon WCHB1-41_c was substantially affected by lifestyle variations. qRT-PCR analysis revealed a paucity of genes related to butyrate production in the gut microbiome of AEs with a completely wild lifestyle, which may be due to the increased unfavorable environmental factors. Overall, these results demonstrate the distinct gut microbiome characteristics among AEs with a gradient of lifestyles and provide a basis for designing strategies to improve the well-being or conservation of this important animal species.

Immunochemical, cytogenetic changes and genetic polymorphism in children living under the exposure to unfavourable environmental factors

Introduction. Studies of biomarkers of effects of susceptibility and sensitivity of the human body to exposure to environmental toxicants are a priority in the development of the hygiene science, individual predisposition to adverse effects of chemicals on DNA and the immune system being of special importance. The objective of our study was to assess immunochemical, cytogenetic changes and genetic polymorphism in children exposed to environmental hazards. Materials and methods. We examined immunochemical marker and functional metabolic changes in selected cells, indicators of the adaptive status of the body and xenogenic poisoning of children environmentally exposed to heavy metals. Gene polymorphism was determined by two detoxification genes (GSTP1 and SOD2). Poisoning was assessed by blood levels of heavy metals. Results. We revealed the presence of autoantibodies to the liver and nervous system in 100% of children. A low level of secretory IgA was observed in 27% of children. The salivary lysozyme level indicates a decrease in the protective function of local immunity by 37.9%. We established a direct relationship between the blood levels of heavy metals and genetic instability in somatic cells of the buccal epithelium. The Ile105Val polymorphism of the GSTP1 gene and the Ala16Val polymorphism of the SOD2 gene were found in 45.9% and 28.4% of children, respectively. Limitations. The paper presents the results of a survey of 3 to 6 years children with allergies attending one preschool. The absence of a control cohort prevents us from comparing our findings with those that could have been obtained for children without allergies and/or living in pollution-free areas. Conclusion. The immunochemical and cytogenetic changes, as well as the genetic polymorphism observed in children are most likely associated with adverse health effects of environmental hazards.

Influence of the pace of El Niño decay on tropical cyclone frequency over the western north pacific during decaying El Niño summers

This study investigated the distinct responses of western North Pacific (WNP) tropical cyclone (TC) activity during different decaying El Niño summers. The El Niño events were classified into two types according to the periodicity of the ENSO cycle, with positive SST anomalies in the equatorial central-eastern Pacific maintaining positive values into the following summer as the slow decaying (SD) cases, but transforming to negative values in the following summer as the rapid decaying (RD) cases. Compared with that in SD El Niño summers, the TC occurrence frequency over the WNP is significantly lower in RD El Niño summers, led by a much weaker WNP monsoon trough with more unfavorable environmental factors for TC genesis and development. Further examination showed that the apparent warming over the tropical Indian Ocean basin and cooling over the equatorial central-eastern Pacific contribute together to an enhanced lower-tropospheric anticyclone through modulation of the descending branch of the large-scale Walker circulation over the WNP, which may play a crucial role in suppressing the TC activity during the decaying summer of RD El Niño cases. In contrast, the warming equatorial central-eastern Pacific and remote western Indian Ocean induce a weakening WNP anticyclone and less suppressed deep convection during the decaying summer of SD El Niño cases. Thus, the different evolution of SST anomalies associated with different paces of El Niño decay results in the linkage between the preceding winter El Niño and the decreased WNP TC frequency in summer being more (less) robust for RD (SD) El Niño cases.摘要本文分析了El Niño事件衰减速度的差异对衰退年夏季西北太平洋热带气旋 (tropical cyclone, TC) 频数的不同影响. 按照El Niño事件衰减速度不同, 将其划分为迅速衰减 (rapid decaying, RD) 和缓慢衰减 (slow decaying, SD) 的El Niño事件. SD (RD) El Niño事件的衰退年夏季, 赤道中东太平洋海温仍维持正异常 (衰减为负异常) . 与SD El Niño事件相比, RD El Niño事件衰退年夏季西北太平洋TC频数显著减少. 进一步的分析揭示了导致TC频数差异的大尺度环境要素, 指出热带印度洋-太平洋海温异常密切相关的西北太平洋低层反气旋异常在其中起到了关键作用.

Spectrophotometric indicators of “Zamin-M” biopreparation immobilized with gypan flocculinate

From the turn of the 20th century, biopreparations that quicken plant growth and development have been frequently employed. The accumulated knowledge of the mechanisms governing interactions between microorganisms and plants necessitates the use of minimal resources and energy in the targeted design of phytomicrobial systems and the optimization of their adaptability in order to increase soil fertility and plant productivity, increase plant yield, and increase plant resistance to diseases and unfavorable environmental conditions and stress factors. In the article today, enough experience has been collected on the scientific management of soil microorganism processes in the optimization of agricultural production and maintaining soil fertility, and it envisages the creation and use of microbiological preparations as the main link of intensive technologies in plant science. It is known that concentration of biomass of microorganisms using flocculants in the technological processes of production of bacterial preparations, after the stage of growth in enzymes, the stage of concentration of biomass of microorganisms from culture liquid is carried out.

LIVER HISTOPATHOLOGY IN ROACH (RUTILUS RUTILUS) AND BLEAK (ALBURNUS ALBURNUS) FROM THE BOLSHOY CHEREMSHAN RIVER

The results of histopathological studies of the liver of two mass fi sh species of the Bolshoy Cheremshan River are presented: roach (Rutilus rutilus Linnaeus, 1758) and bleak (Alburnus alburnus Linnaeus, 1758). Using standard histological techniques, fi ve types of detected liver disorders and pathologies were studied. The excess of normal indicators of the occurrence of fi sh with detected liver histopathologies in populations exposed to the greatest adverse effects was recorded, which is one of the signs of their distress in the environmental conditions of some sections of the watercourse. The number of individuals with liver histopathologies at two research stations reached high values, and the occurrence of detected types of pathologies exceeded the value of their spontaneous formation (1%). The revealed pathologies had different degrees of severity for fi sh (2-5 points on a fi ve-point scale). On sections of the river with increased anthropogenic load, damage of an irreversible nature and life-threatening has been recorded. In areas of the river with increased anthropogenic load, damage of an irreversible nature and threatening the life of fi sh was recorded: dysplasia and lipoid degeneration of hepatocytes. Thus, the direct connection of the occurrence of the detected liver histopathologies with the level of anthropogenic load on the ecosystem of the studied reservoir has been confi rmed. The possibility of using histological parameters of fi sh to assess the infl uence of a complex of unfavorable environmental factors on individuals as an indicator of the ecological state of the reservoir is shown. The presented data are the fi rst data on the morphophysiological state of two fi sh species that form the basis of the ichthyofauna of the Bolshoy Cheremshan River.