scholarly journals Assessment of phytopathological state of woody plants by ultrasound diagnostics

Author(s):  
O. I. Korotkov ◽  
V. N. Gerasimchuk ◽  
V. A. Belyakov ◽  
Y. A. Gavrilenko ◽  
D. S. Gardt ◽  
...  

The state of the wood trunk tissue of trees Cupressus sempervirens 'Stricta', Morus nigra L., Magnólia grandiflóra L., Carpinus orientalis Mill., growing in the Park of the Educational center "Sirius" (Sochi) was determined with the use of complex acoustic ultrasound tomography ARBOTOM® ABT05-S. It was revealed that these species were characterized by a significant differentiation in the degree of damage to bracket fungi. Low level of phytopathogenic damage was observed in Carpinus orientalis . The trunk wood of Morus nigra was characterized by the highest rates of phytopathogenic damage. The negative impact of bracket fungi is one of the most significant factors that reduce vital functions and reduce the life of many species of woody plants. Phytopathogenic damage to wood and trunk rot formation and voids have an impact on the growth and development of plants, reducing their life time, and can lead to death and fall of a tree, which within the urban environment is a potential danger to people.

2019 ◽  
Vol 2 (3) ◽  
pp. 10-28
Author(s):  
Martina Shotaroska ◽  
Bojan Simovski ◽  
Tomcho Nikolovski ◽  
Katerina Chonevska ◽  
Ivan Minčev ◽  
...  

Subject of research in this article is the urban dendroflora of the Macedonia Park, situated on about 50,000 m2 in the Macedonian capital city of Skopje, i.e., identification and presence of the recent woody plants. Thus, observed are morphological and ecological features of the woody plants and their current state in this urban environment. The investigation relates to a seven-year period (since the establishment of the Park in 2012 up to late 2019). After the field research and the inventorisation of the woody plants in the Park, 82 taxa were identified, represented in 1,318 individuals. Most represented tree species is the hybrid Platanus × hispanica Mill. ex Münchh. with 103 individuals (7.81% of the overall urban dendroflora). Most frequent tree including infraspecific taxa is Fraxinus excelsior L. (including F. e. ‘Globosa’, F. e. ‘Jaspidea’, and F. e. ‘Pendula’) with a total number of 146 individuals (11.08%). Concerning other growth form, the mini and small tree roses of hybrid Rosa Floribunda Group outnumber all ornamental woody species with 225 bushes (17.07%). Climbers are represented with 3 taxa (3.66% of identified taxa) in pergolas (Wisteria sinensis /Sims/ Sweet, Parthenocissus quinquefolia /L./ Planch.), and wire cage topiary (Hedera helix L.). Likewise, 87 individuals (6.60%) of 10 species (12.19%) occur as remnants of the greening in the past of which 3 species are used as a green core of a small sacral architecture: Cupressus sempervirens var. horizontalis (Mill.) Loudon (with 10 trees), Platycladus orientalis (L.) Franco (3), and Pinus nigra J.F.Arnold (1). In general, the urban dendroflora is properly selected and used for greening, although certain species and individuals are withering (e.g. Betula pendula ‘Youngii’, Juniperus scopulorum ‘Skyrocket’, F. e. ‘Jaspidea’) or unsuitably used for avenue and in small alpine-like garden.


Mycotaxon ◽  
2021 ◽  
Vol 136 (2) ◽  
pp. 451-489
Author(s):  
Dhandevi Pem ◽  
Rajesh Jeewon ◽  
Timur S. Bulgakov ◽  
Irina V. Bondarenko-Borisova ◽  
Mingkwan Doilom ◽  
...  

Camarosporidiella specimens collected from woody plants in central Italy, eastern Ukraine, and southeastern Russia were identified based on morphology and multi-gene (LSU, SSU, ITS, and TEF) sequence analyses. Camarosporidiella caraganicola on Amorpha fruticosa, C. celtidis on Ulmus pumila, C. elaeagnicola on Cytisus ruthenicus are described with new host records and as new fungal records for Ukraine. Camarosporidiella moricola on Morus nigra is newly reported for Italy, and C. robiniicola on Robinia pseudoacacia is new for Ukraine. Camarosporidiella elaeagnicola on Elaeagnus angustifolia is re-described to facilitate identification. Notes on host distribution of Camarosporidiellaceae are also provided.


2015 ◽  
Vol 55 (4) ◽  
pp. 508 ◽  
Author(s):  
M. S. Bhanugopan ◽  
W. J. Fulkerson ◽  
M. Hyde ◽  
D. R. Fraser

The aim of this study was to determine the effect of potassium (K) supplementation on the calcium (Ca) absorption capacity from the rumen and abomasum of sheep. The Ca absorption capacity from the rumen and abomasum of sheep was measured using stable strontium (Sr) as a Ca-analogue tracer method. The sheep, cannulated at either the rumen or abomasum, were randomly allocated to one of two groups (control or K-supplemented) and fed in individual metabolism pens twice daily with a diet comprising oaten hay, lucerne chaff and barley fortified with or without potassium carbonate (K2CO3). The K content of the diet of the K-supplemented animals was 3.1% of dry matter compared with 1.4% for the control animals. The animals were fed their respective diets for a period of 2 weeks. The fractional absorption capacity (FC) of Ca was estimated before, during and after the treatment period. Supplementation with K decreased the FC of Ca in both the rumen and abomasum during treatment and increased the FC of Ca in the abomasum post-treatment. Supplementation with K also increased the fractional excretion of K in the urine, but decreased the fractional excretion of Ca and magnesium (Mg) (P < 0.05), showing that K supplementation significantly affected Ca and Mg metabolism. Results suggest that renal conservation of Ca and Mg is an important mechanism controlling the Ca and Mg pool for vital functions of the body. In times of high demand for these minerals during lactation and pregnancy, high K in the diets may predispose sheep to hypomagnesaemia and hypocalcaemia, which in turn will have a negative impact on productivity and economic returns.


2019 ◽  
Vol 19(34) (3) ◽  
pp. 108-115
Author(s):  
Vadym Tkachuk ◽  
Oksana Vitriak

The article substantiates the prospects for the development and increase of the functioning efficiency of small farming forms in the countryside. Particular attention is paid to the study of factors that have a negative impact on the farms and households functioning. Based on the analysis of statistical indicators, it has been established that the most significant factors that have a negative impact on the functioning of small farming forms in the countryside are the difficulty of manufactured products realization, insufficiently effective state support, lack of developed infrastructure, low education level of households' heads. In order to minimize the negative impact of the identified range of problems, it is proposed to introduce preventive measures in the following areas: the state support system improvement, infrastructure development, the production base and resource support improvement, integration relations development.


2019 ◽  
Vol 12 (5) ◽  
pp. 82-89
Author(s):  
E. L. Moreva

The importance of the research lies in crucial significance of atomic industry ecological effects for people vital functions that can greatly restrict the sector’s development. Overcoming unfavorable atomic industry environmental impact is often seen in a way of technical technological development when it is possible to prevent, mitigate and/or neutralize the negative effects from its operating. But this is just part of the solution. The subject of this research addresses the ecological impact of atomic operations on the economic activity of the atomic industry enterprises in the post-soviet space and on the ways of optimizing their productive institutional construction at different levels of trans-border regions.The purpose of the work is to define the meaning of negative impact anticipating for the growth and development of the atomic industry while implementing innovative projects of local / national levels; participating in international competition and interaction for integration on the post-soviet space.It is concluded that inventory-making has crucial importance for atomic industry development. At the local/national level within two-side contacts it is expressed in stimulating the subjects of the industry to transform and perfect by national stakeholders and foreign competitors. At the level of trans-border connections such influence has not become the basis for productive integration interaction and atomic complex development because of the specificity of their subjects’ interests. The adequate inventory-making in institutional construction could allow using the possible ecological impacts of atomic production for their development and consolidating as a driver of social economic development at the postsoviet space.


2018 ◽  
pp. 66-71
Author(s):  
Victoria Erofeeva ◽  
Oleg Granichin ◽  
Ivan Senin

Latest research papers on ultrasound tomography feature a new way of performing the scanning procedure that is similar to computed tomography. The underlying work of computed tomography consists of scanning thin slices with a rotating narrow X-ray beam. Usually, one needs a large number of projections for many different angles to reconstruct an image. In this work, we consider the application of the compressive sensing framework together with randomization to arrange an economy representation of the ultrasound diagnostics data without essential loss of performance. Using this approach, we will be able to randomly select the angles of scanning instead of obtaining all possible projections. We start with a brief overview of ultrasound tomography techniques, after that we formulate the problem of our interest, and provide the appropriate decision with results of preliminary computer simulations.


2020 ◽  
Vol 210 ◽  
pp. 22019
Author(s):  
Olga Fedotova ◽  
Elena Platonova ◽  
Vladimir Latun ◽  
Igor Filkevich ◽  
Oleg Igumnov

The COVID-19 pandemic has significantly affected the organization of the educational process in Russian universities. The object of the research is the experience of implementing e-education and the transition to distance technologies for continuing education of Chinese undergraduates in the Russian metropolitan university. Russian universities had the technical capabilities and used various electronic educational platforms. In the same time, the results of the survey showed a decrease in the satisfaction of Chinese full-time students when switching to distance learning. The study shows the significant factors that had a negative impact on the educational process using distance technology to teach Chinese undergraduates during the COVID-19 pandemic. The authors have grouped these factors into five groups (technical, language, emotional, and financial, content of lecture). Identification of these factors made it possible to develop a program to improve the educational process and enhance the satisfaction of foreign students studying at Russian universities.


Author(s):  
Yu. V. Plugatar ◽  
V. N. Gerasimchuk

As a result of instrumental diagnostics of the state of trunk wood, the level of phytopathogenic damage of the most old-age specimens of Magnolia grandiflora L. in the Arboretum of the Nikitsky Botanical Gardens is estimated. Digital two-dimensional images of the trunk wood were obtained, and the relative indicators of the degree of its destruction were characterized. The results of the research allowed us to identify some patterns in the nature of the distribution of destructions in the trunk wood of M. grandiflora . It was found that of the six studied specimens of M. grandiflora , the greatest destruction of trunk wood was found in two 130-year-old trees growing in The Upper Arboretum Park. There was no correlation between the presence and degree of destruction of M. grandiflora trunk wood and the age of the trees examined. The use of the ultrasound tomography method expands the possibilities of diagnostics of phytopathogenic lesion of the trunk wood. The combination of visual assessment and instrumental diagnostics of trunk wood allows us to obtain more complete information about the vital state of trees.


1997 ◽  
Vol 28 (1) ◽  
pp. 28-30
Author(s):  
Robert Miranda ◽  
Carolyn W. Rollins

In recent years the number of individuals diagnosed with obsessive compulsive disorder (OCD) has increased. With a life time prevalence of 2.5%, OCD is more prevalent than schizophrenia, bipolar disorder, or panic disorder. Undiagnosed and untreated, OCD can have negative effects on many aspects of an individual's life, including vocation. With the mean age of onset in the United States being approximately 16 years of age, the impact of OCD on an individual's vocational development can be considerable. Additionally, individuals with this disorder may present a poor work or academic history. Their vocational performance may be incorrectly interpreted as indicative of irresponsibility or a poor work ethic rather than as a consequence of the disease. Therefore, rehabilitation counselors should be cognizant of the symptoms associated with OCD and the negative impact of the disorder on an individual's life. This article outlines symptoms of the disorder, explores current treatment options, and discusses vocational implications associated with OCD.


2021 ◽  
Vol 301 ◽  
pp. 02001
Author(s):  
Olga Romanova ◽  
Alena Ponomareva

Carrying out large-scale structural transformations of both the entire Russian economy and its individual actors is one of the most important tasks of the current stage of national development. The urgency of this problem has increased dramatically during the COVID-19 pandemic. The purpose of this paper is to identify the most significant factors in the pandemic that affect the economic growth of Russia’s regions and reduce territorial inequality. The use of methods of comparative and economic-statistical analysis made it possible to establish that the most important independent factor in the development of a region is the structure of the economy and such a factor that ensures it as the regional structural (industrial) policy. It has been substantiated that structural modernization is the basis for pursuing a non-contradictory short- and long-term policy to reduce interterritorial inequality. A particularly negative impact of the pandemic on regions with a low level of development of the real sector and overdevelopment of the service sector has been revealed.


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