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Tytuł:
Classification of Parkinsons disease in brain MRI images using Deep Residual Convolutional Neural Network (DRCNN)
Autorzy:
Praneeth, Puppala
Sathvika, Majety
Kommareddy, Vivek
Sarath, Madala
Mallela, Saran
Vani, K. Suvarna
Chkrabarti, Prasun
Powiązania:
https://bibliotekanauki.pl/articles/30148251.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Promocji Wiedzy
Tematy:
Parkinson’s disease
Deep Residual Convolutional Neural Network
deep learning
health control
Opis:
In our aging culture, neurodegenerative disorders like Parkinson's disease (PD) are among the most serious health issues. It is a neurological condition that has social and economic effects on individuals. It happens because the brain's dopamine-producing cells are unable to produce enough of the chemical to support the body's motor functions. The main symptoms of this illness are eyesight, excretion activity, speech, and mobility issues, followed by depression, anxiety, sleep issues, and panic attacks. The main aim of this research is to develop a workable clinical decision-making framework that aids the physician in diagnosing patients with PD influence. In this research, the authors propose a technique to classify Parkinson’s disease by MRI brain images. Initially, the input data is normalized using the min-max normalization method, and then noise is removed from the input images using a median filter. The Binary Dragonfly algorithm is then used to select features. In addition, the Dense-UNet technique is used to segment the diseased part from brain MRI images. The disease is then classified as Parkinson's disease or health control using the Deep Residual Convolutional Neural Network (DRCNN) technique along with the Enhanced Whale Optimization Algorithm (EWOA) to achieve better classification accuracy. In this work, the Parkinson's Progression Marker Initiative (PPMI) public dataset for Parkinson's MRI images is used. Indicators of accuracy, sensitivity, specificity and precision are used with manually collected data to evaluate the effectiveness of the proposed methodology.
Źródło:
Applied Computer Science; 2023, 19, 2; 125-146
1895-3735
2353-6977
Pojawia się w:
Applied Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Impact of COVID-19 on Consumer Behavior. The Role of Lack of Control and Risk Perception on Stockpiling
Wpływ COVID-19 na zachowania konsumentów. Rola poczucia braku kontroli i postrzegania ryzyka w tendencji do robienia zakupów na zapas
Autorzy:
Maison, Dominika
Adamczyk, Dominika
Wnuk, Anna
Oleksy, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/16530133.pdf
Data publikacji:
2022-11-10
Wydawca:
Uniwersytet Warszawski. Wydawnictwo Naukowe Wydziału Zarządzania
Tematy:
consumer behavior
stockpiling
coronavirus disease
lack of control
fear of infection
risk perception of COVID-19 infection
zachowania konsumenckie
robienie zakupów na zapas
koronawirus
brak kontroli
strach przed zakażeniem
postrzeganie ryzyka związanego z zakażeniem COVID-19
Opis:
Purpose: The coronavirus pandemic has suddenly changed the lives of people all over the world, both in terms of their health, everyday habits, work, and the patterns of their consumer behavior. The goal of our study was first to examine the intensity of stockpiling in Poland that appeared in response to the onset of the COVID-19 pandemic and explore the role of psychological factors (sense of control over the pandemic and subjective perception of the risk of getting infected with the coronavirus) for different dimensions of stockpiling. Design/methodology/approach: The study was conducted in April 2020 on a nationwide representative random-quota sample (n=1,046) shortly after the first COVID-19 infection was diagnosed in Poland. At the time, certain changes in shopping behavior, especially increased purchase frequencies and stockpiling intensity, were observed in Poland, similarly to many other countries. Findings: The results showed that the factors affecting consumer behavior, such as making supplies or spending more on pandemic-related and unrelated items, are explained not only by demographic variables but also by psychological factors such as the experience of a lack of control and fear of being infected with the coronavirus. Research limitations/implications: The study has managerial implications regarding sales and logistics management. In an emergency situation (not only directly related to the economic crisis and consumption), both producers of basic products and retailers should be prepared for increased interest in the purchase of these products and provide access to consumers accordingly. Controlling communications in public spaces that could generate anxiety would be advisable too. Originality/value: The conducted study shows that the shopping behavior during the onset of the COVID‑19 pandemic was predicted by fear of the coronavirus and feelings of a lack of control.
Cel: pandemia COVID-19 gwałtownie zmieniła życie ludzi na całym świecie w zakresie zarówno zdrowia, codziennych nawyków, pracy, jak i zachowań konsumenckich. Celem badania było zmierzenie intensywności gromadzenia zapasów w Polsce jako odpowiedzi na pojawienie się pandemii COVID-19 oraz zbadanie roli czynników psychologicznych (poczucie kontroli i subiektywne postrzeganie ryzyka zakażenia koronawirusem) dla gromadzenia różnych rodzajów produktów. Metodologia: badanie przeprowadzono w kwietniu 2020 roku na ogólnopolskiej reprezentatywnej próbie losowo-kwotowej (n=1046) krótko po wykryciu pierwszego zakażenia COVID-19 w Polsce. W tym czasie w Polsce, podobnie jak w wielu innych krajach, zaobserwowano pewne zmiany w zachowaniach zakupowych, zwłaszcza zwiększoną częstotliwość zakupów i intensywność gromadzenia zapasów. Wyniki: wyniki pokazały, że czynniki wpływające na zachowania konsumentów, takie jak robienie zapasów czy większe wydatki na zakupy związane i niezwiązane z pandemią, są wyjaśniane nie tylko przez zmienne demograficzne, lecz także przez czynniki psychologiczne, takie jak doświadczenie braku kontroli i strach przed zakażeniem koronawirusem. Ograniczenia/implikacje badawcze: badanie ma implikacje dotyczące zarządzania sprzedażą i logistyką. W sytuacji kryzysowej (nie tylko bezpośrednio związanej z kryzysem gospodarczym i konsumpcją) zarówno producenci podstawowych produktów, jak i ich sprzedawcy powinni być przygotowani na zwiększone zainteresowanie zakupem tych produktów i odpowiednio zapewnić ich dostęp konsumentom. Wskazane byłoby również kontrolowanie komunikatów w przestrzeni publicznej, które mogłyby wywołać niepokój.
Źródło:
Problemy Zarządzania; 2022, 20, 3(97); 4-26
1644-9584
Pojawia się w:
Problemy Zarządzania
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Association between socio-demographic factors, healthy lifestyle factors, and infection prevention behavior among University students: a cross-sectional study
Związek pomiędzy czynnikami społeczno-demograficznymi, czynnikami zdrowego stylu życia i zachowaniami zapobiegającymi zakażeniom wśród studentów uniwersytetu: badanie przekrojowe
Autorzy:
Gill, G.
Powiązania:
https://bibliotekanauki.pl/articles/2048069.pdf
Data publikacji:
2021
Wydawca:
Akademia Bialska Nauk Stosowanych im. Jana Pawła II w Białej Podlaskiej
Tematy:
infection transmission
community medicine
prevention and control
pandemics
disease outbreaks
epidemiology
Opis:
Background. This study investigated the association between infection prevention behavior and socio-demographic and other lifestyle factors among the Lithuanian public and private university students. Material and methods. The cross-sectional survey took place from 15 January to 28 February 2021, and a total of 234 students responded to the survey. Survey questions included socio-demographic factors, compliance to hand hygiene, attitude towards vaccination, safe sexual behavior and risky sexual behavior, self-rated health, eating habits, physical activity, and compliance with COVID-19 preventative measures. Independent sample t-test, oneway ANOVA, correlation bivariate, and multiple regression tests were used to analyze the association between different factors. Results. Students with better health showed higher compliance to hand hygiene, but reported lower safe sex practices (p<0.05). Likewise, students with chronic disorders were more skeptical of vaccines (p<0.05). Students reporting healthy eating habits displayed a higher compliance to hand hygiene (p<0.05) and safe sex (p<0.05), while students who were more physically active showed lower confidence in vaccines (p<0.05). Conclusions. This study indicates that significant correlations exist between numerous variables related to socio-demographic and lifestyle factors with infection prevention behavior. Moreover, there is a need to increase the compliance of infection prevention behavior among youth. Hence, more health promotion programs should be implemented focusing on infection prevention behavior in young individuals.
Źródło:
Health Problems of Civilization; 2021, 15, 3; 187-195
2353-6942
2354-0265
Pojawia się w:
Health Problems of Civilization
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Parch srebrzysty (Helminthosporium solani) – objawy i zwalczanie
Silver scab (Helminthosporium solani) – symptoms and control
Autorzy:
Osowski, Jerzy
Urbanowicz, Janusz
Powiązania:
https://bibliotekanauki.pl/articles/2199399.pdf
Data publikacji:
2021-06-25
Wydawca:
Instytut Hodowli i Aklimatyzacji Roślin
Tematy:
choroba skórki, grzyb, Helminthosporium solani, zwalczanie, ziemniak
disease control, fungus, Helminthosporium solani, potato, skin disease
Opis:
Utrzymujące się od lat zapotrzebowanie rynku i konsumentów na produkty przetworzone z ziemniaków oraz popyt na ziemniaki myte i paczkowane sprawiają, że jakość bulw (gładka skórka, brak oznak chorób) oraz przydatność do przetwórstwa mają duże znaczenie. Tendencja taka sprawia, że każdy patogen powodujący uszkodzenia skórki nabiera znaczenia ekonomicznego. Jednym z nich jest grzyb Helminthosporium solani sprawca parcha srebrzystego. Znaczenie choroby i jego sprawcy wynika także i z innych czynników, spośród których znaczenie ma brak odmian odpornych, złożony cykl rozwoju choroby z mniej znaczącą fazą polową i trudną do opanowania fazą rozwoju podczas przechowywania. Dodatkowym czynnikiem jest także brak dostępnych środków do chemicznego zwalczania choroby. Stwierdzona w latach 70-tych i 80-tych XX w. odporność na tiabendazol stosowany zarówno wiosną jak i jesienią była jedną z ważniejszych przyczyn wzrostu znaczenia choroby. Ze względu na złożony cykl rozwoju choroby (faza polowa i przechowalnicza) zwalczanie tej choroby jest trudne i wymaga zastosowania wszystkich dostępnych metod w ochronie integrowanej.
The long-standing market and customer demand for processed potato products and the demand for washed and packaged potatoes mean that tubers' quality (smooth skin, no signs of disease) and suitability for processing are of great importance. This tendency makes any pathogen causing skin damage of economic importance. One of them is the fungus Helminthosporium solani, the preparator of silver scab. The importance of the disease and its cause is also due to other factors: the lack of resistant varieties, the complex cycle of disease development with a less significant field phase, and a difficult-to-control phase of development during storage. An additional factor is the lack of available chemical disease control agents. The resistance to thiabendazole used both in spring and autumn, found in the 1970s and 1980s, was one of the most important reasons for the increased importance of the disease. Due to the complex cycle of disease development (field and storage phase), combating this disease is difficult and requires all available methods of integrated protection.
Źródło:
Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin; 2021, 294; 35-50
0373-7837
2657-8913
Pojawia się w:
Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Rzekomy pomór drobiu - przegląd strategii szczepień i zapobiegania chorobie
Newcastle disease (ND) - vaccination protocols and strategies of prevention
Autorzy:
Hodorowicz, Wojciech
Powiązania:
https://bibliotekanauki.pl/articles/22180992.pdf
Data publikacji:
2021
Wydawca:
Krajowa Izba Lekarsko-Weterynaryjna
Tematy:
patogeneza
wirus rzekomego pomoru drobiu
klasyfikacja
objawy kliniczne
zmiany patologiczne
leczenie
profilaktyka
szczepienia ochronne
szczepionki inaktywowane
szczepionki wektorowe
strategia szczepien
drób
rzekomy pomór drobiu
choroby zwierząt
kontrola chorób
szczepionki żywe
Newcastle disease
NDV classification
control
vaccines
Opis:
Newcastle disease (ND), caused by avian paramyxovirus type 1 (APMV‑1), is among the most important diseases in poultry and other bird species, Affected birds can present clinical signs, which range from a mild, almost unnoticed respiratory distress to severe or even highly fatal disease forms. There is no treatment for Newcastle disease – it’s occurrence in commercial poultry is reportable to the World Organisation of Animal Health (OIE), and it impacts international trade in poultry business. Prevention relies on biosecurity procedures and vaccinations. Many countries introduced eradication policies with compulsory slaughter of infected flocks. Due to all these facts, Newcastle disease remains the serious threat to commercial poultry production throughout the world. Currently, there are classification systems of Newcastle disease viruses (NDV), which are mainly related to the clinical signs of the disease. The progress in the development of new vaccines against ND in recent years, may present some difficulties in selecting the best vaccination program. The main aim of this article is to present the current classification and to review the different approaches to ND vaccination methods, with description of all, available worldwide, vaccine types. This knowledge can help the poultry vet to make the best choice for vaccination schedule, accordingly to the local conditions and administrative requirements.
Źródło:
Życie Weterynaryjne; 2021, 96, 08; 579-588
0137-6810
Pojawia się w:
Życie Weterynaryjne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Efficiency of gaseous ozone in disinfection of mushroom growing rooms
Autorzy:
Szumigaj-Tarnowska, J.
Szafranek, P.
Ulinski, Z.
Slusarski, C.
Powiązania:
https://bibliotekanauki.pl/articles/1076875.pdf
Data publikacji:
2020
Wydawca:
Instytut Ogrodnictwa
Tematy:
mushroom
Agaricus bisporus
growing room
fungal disease
disinfection
ozonation
chemical control
Opis:
Fungal diseases are a persistent problem in the cultivation of white button mushrooms (Agaricus bisporus). The chemical control of pathogens is becoming less effective and less desirable, so new ways to limit these infections are urgently required. What is more, the disease is mostly controlled through cultural practices and good hygiene on mushroom farms. The aim of this study was to evaluate the fungicidal effects of ozone on fungal pathogens of common mushrooms. Experiments with the use of ozone gas for disinfection of growing rooms after the completion of the mushroom growing cycle were carried out. The fungicidal effectiveness of ozone fumigation was evaluated on the basis of the survival rate of the spores of the pathogens tested (Lecanicillium fungicola, Cladobotryum dendroides, Mycogone perniciosa, and Trichoderma aggressivum). Spore suspension was applied to aluminum plates and then was exposed to gaseous ozone. The assessment of the growth of colonies of fungal isolates obtained from infected surfaces was carried out using Rodac contact test plates. The results showed that L. fungicola, M. perniciosa, and C. dendroides isolates were sensitive to the gas ozone. In order to achieve 100% efficacy against Mycogone strains, a minimum of 6 hours of ozonation had to be applied, whereas for Cladobotryum strains, a minimum of 8 hours had to be applied. The Lecanicillium species was the most sensitive to ozonation because 30 minutes of ozonation was enough to gain 100% inhibition of its growth. No satisfactory results were obtained in the case of the pathogenic species of Trichoderma, regardless of the experimental conditions. Nevertheless, this study has demonstrated the usefulness of ozone as a disinfectant for empty growing rooms after the completion of the mushrooms’ cultivation cycle.
Źródło:
Journal of Horticultural Research; 2020, 28, 2; 91-100
2300-5009
Pojawia się w:
Journal of Horticultural Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Metody badawcze stosowane w pracach dotyczących ograniczania występowania populacji Globodera rostochiensis w glebie
Research methods used in experimental works of reducing Globodera rostochiensis occurence in the soil
Autorzy:
Franke, Katarzyna
Gryń, Grzegorz
Michałowska, Lidia
Nowakowski, Mateusz
Powiązania:
https://bibliotekanauki.pl/articles/2199912.pdf
Data publikacji:
2019-11-30
Wydawca:
Instytut Hodowli i Aklimatyzacji Roślin
Tematy:
Globodera rostochiensis
mątwik ziemniaczany
organizm kwarantannowy
zwalczanie
metodyka
potato cyst nematode
quarantine pest
disease control
methodology
Opis:
Mątwik ziemniaczany i mątwik agresywny to dwa nicienie tworzące cysty na korzeniach ziemniaka. Zarówno w Polsce jak i w wielu innych państwach posiadają status organizmów kwarantannowych. Obecność mątwika ziemniaczanego może powodować straty w plonie bulw sięgające 50–80%. Metody zwalczania mątwika można podzielić na trzy grupy: agrotechniczną, biologiczną i chemiczną. Pozyskane wyniki będą stanowiły podstawę opracowania zaleceń dla rolników, które usprawnią eliminację szkodnika.
Potato cyst and aggressive cyst are two nematodes forming cysts on the roots of the potato. In Poland and in many other countries they have the status of quarantine organisms. The presence of potato cyst nematodes may cause losses in the tuber yield reaching 50–80%. Methods of fighting cyst nematode can be divided into three groups: agrotechnical, biological and chemical. The obtained results will be the basis for the development of recommendations for farmers, which will improve the elimination of the pest.
Źródło:
Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin; 2019, 287; 15-18
0373-7837
2657-8913
Pojawia się w:
Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Otwarte problemy w obszarze pedagogiki leczniczej
Open Problems in Medical Pedagogy
Autorzy:
Hajnicz, Wanda
Konieczna, Iwona
Powiązania:
https://bibliotekanauki.pl/articles/1371480.pdf
Data publikacji:
2019-01-07
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
healing pedagogy
chronic disease
body
identity
sense of control
resource
loss
coping
matching in contact
social exchange
Opis:
Recently, it has been noticed that the problems of specific specializations in the field of special education overlap or go far beyond the area of a given sub-discipline. The article addresses issues related to outlining the main problems that we may encounter in the area of pedagogy, and which are crucial for the lives of people with chronic illness in various areas of their functioning. They are: body traits – their importance in building identity in the situation of experiencing a chronic disease; coping with loss in a chronic disease situation; matching in contact with a person with a chronic illness and participation in social exchange.
Źródło:
Interdyscyplinarne Konteksty Pedagogiki Specjalnej; 2018, 21; 263-278
2300-391X
Pojawia się w:
Interdyscyplinarne Konteksty Pedagogiki Specjalnej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Relationship between sociodemographic factors and depression symptoms and level of diabetes acceptance
Autorzy:
Cyuńczyk, A.
Misiak, B.
Lewko, K.
Dziekońska, M.
Lewko, J.
Powiązania:
https://bibliotekanauki.pl/articles/1918889.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Medyczny w Białymstoku
Tematy:
Diabetes
glycemic control
depression
disease acceptance
Opis:
Introduction: Diabetes is a disease whose course is strongly determined by self-monitoring and self-care. Ensuring metabolic control of diabetes is not only important for the current state of health, it also allows to maintain the body in the best condition despite the existing chronic disease. Purpose: To assess the relationship between sociodemographic factors and depression symptoms and the level of disease acceptance in diabetes. Materials and methods: The study used a diagnostic survey method with a questionnaire, the Beck Depression Inventory, and the Acceptance of Illness Scale. The study group consisted of 43 women (51%) and 41 men (49%). A total of 67% of respondents had diagnosed type 2 diabetes, 24% type 1 diabetes, and 6% LADA. Average disease duration was 15 years. Results: In the studied group, 15% of patients had diagnosed symptoms of depression; while according to the Beck Depression Inventory, depressive episodes occurred more often in mild (30%) and moderate (23%) severity. They were observed more often in people over 50 years old. Depression symptoms were significantly more common in the group of overweight and obese people (p=0.022, r(X,Y)=0.2490). Conclusions: The problem of depression increases with disease duration. People diagnosed with type 2 diabetes have lower levels of disease acceptance. Disease acceptance is a factor that eliminates the occurrence of depressive disorders of varying severity.
Źródło:
Progress in Health Sciences; 2019, 2; 21-28
2083-1617
Pojawia się w:
Progress in Health Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Antifungal activity of Solanum extracts against phytopathogenic Curvularia lunata
Autorzy:
Hernandez-Rodriguez, Z.G.
Riley-Saldana, C.A.
Gonzalez-Esquinca, A.R.
Castro-Moreno, M.
de-la-Cruz-Chacon, I.
Powiązania:
https://bibliotekanauki.pl/articles/66701.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
phytopathogenic fungi
Curvularia lunata
antifungal activity
Solanum
plant extract
plant disease
disease control
leaf spot disease
phytopathogen
inhibition
Opis:
Several species of Solanum produce secondary metabolites with antimicrobial activity. In the present study, the inhibitory activity of Solanum chrysotrichum, S. erianthum, S. torvum and S. rostratum against phytopathogenic Curvularia lunata was determined. Methanol extracts from roots, stems, leaves and fruits were evaluated by the method of mycelial inhibition on agar and the minimum inhibitory concentration (MIC) was determined on a liquid medium. To increase the antimicrobial activity, the combined activity of the most active extracts for each phytopathogen was also determined (a combination of intra and interspecies extracts). The results showed that 12 of the 16 methanolic extracts of Solanum species had antifungal effects against C. lunata. The extracts of S. rostratum and S. erianthum developed the highest activity (~80% inhibition and 28.4 MIC μg . ml–1), even, equal to or greater than, the reference fungicide. The mixture of the active extracts of S. chrysotrichum and S. torvum increased their activity. Various extracts affected the macro and microscopic morphology and most of them reduced the number of conidia of the fungus. This resulted in the capacity to control the vegetative growth and reproduction of C. lunata, the causal fungus of corn leaf spot disease.
Źródło:
Journal of Plant Protection Research; 2018, 58, 3
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
First report of Pythium aphanidermatum infecting tomato in Egypt and its control using biogenic silver nanoparticles
Autorzy:
Elshahawy, I.
Abouelnasr, H.M.
Lashin, S.M.
Darwesh, O.M.
Powiązania:
https://bibliotekanauki.pl/articles/66024.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Pythium aphanidermatum
plant disease
tomato
Lycopersicon esculentum
Egypt
pest control
biogenic substance
silver nanoparticle
Opis:
In August 2016, tomato plants grown during a hot, wet summer with heavy soil flooding, displaying symptoms of wilting, dead plant, root rot with crown and stem rot, at Beni Suef and Fayoum governorates were examined. A number of 16 fungal isolates were isolated from tomato plants displaying the above symptoms. These isolates were classified as belonging to six species, namely: Alternaria solani, Chaetomium globosum, Fusarium solani, Fusarium oxysporum, Pythium spp. and Rhizoctonia solani. Isolates of Pythium spp. were prevalent and were found to be more pathogenic than the other fungal isolates. This species causes damping-off, root rot, sudden death, stem rot and fruit rot. The pathogen was identified as Pythium aphanidermatum based on morphological, cultural, and molecular characteristics. Biogenic silver nanoparticles (AgNPs) were produced using the F. oxysporum strain and characterized by transmission electron microscopy (TEM). The size of these spherical particles ranged from 10 to 30 nm. In vitro, biogenic AgNPs showed antifungal activity against P. aphanidermatum. In greenhouse and field experiments, AgNPs treatment significantly reduced the incidence of dead tomato plants due to root rot caused by P. aphanidermatum compared to the control. All of the investigated treatments were effective and the treatment of root dipping plus soil drenching was the most effective. To the best of our knowledge, this study describes P. aphanidermatum on tomato in Egypt for the first time. Also, biogenic AgNPs could be used for controlling root rot disease caused by this pathogen.
Źródło:
Journal of Plant Protection Research; 2018, 58, 2
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Impact of mineral oils on dynamics in the aphids presence and virus infection of tulips 'Leen van der Mark' cv. in the field cultivation
Autorzy:
Karczmarz, K.
Marcinek, B.
Powiązania:
https://bibliotekanauki.pl/articles/11895022.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Tematy:
plant cultivation
field cultivation
tulip
Leen van der Mark cultivar
flowering plant
ornamental plant
bulbous plant
leaf greenness index
aphid
aphid occurrence
pest control
plant disease
viral infection
mineral oil
Sunspray 850 EC preparation
Sunspray Ultra-Fine preparation
adjuvant
phytotoxicity
Opis:
The research material consisted of tulip plants of ‘Leen van der Mark’ cv. The effect of two preparations was evaluated: Sunspray 850 EC and Sunspray Ultra-Fine, in which the active substance is refined paraffinbased mineral oil. Preparations were applied at three concentrations: 1, 1.5, and 2%. Research plots were sprayed three times every 7 days. The first treatment was performed at the turn of the second and third decade of April. Starting from the beginning of May, observations of plant colonization by aphids were conducted every 14 days. The observations were terminated at the end of June. It was found that spraying using mineral oils Sunspray 850 EC and Sunspray Ultra-Fine of tulip ‘Leen van der Mark’ significantly affect the degree of virus infection and infection due to disease-causing pathogens in relation to the untreated plants. Plants sprayed with mineral oil at the lowest concentration (1%) were in better health condition and were less attractive to aphids. Increasing the concentration of oil and the number of treatments intensified the phytotoxic reaction of tulips manifested as chlorosis with varying intensity. They were not, however, apparent effect on plant growth and development. The chlorophyll content (expressed as greenness index) in the tulip leaves treated with mineral oil was lower as compared to untreated leaves, when plants were sprayed three times using Sunspray Ultra-Fine oil at a concentration of 2%.
Źródło:
Acta Scientiarum Polonorum. Hortorum Cultus; 2018, 17, 2; 11-25
1644-0692
Pojawia się w:
Acta Scientiarum Polonorum. Hortorum Cultus
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of dopaminergic treatment on resting elbow joint angle control mechanisms in patients with Parkinson’s disease – a preliminary report
Autorzy:
Marusiak, J.
Jaskólska, A.
Budrewicz, S.
Koszewicz, M.
Andrzejewska, R.
Kisiel-Sajewicz, K.
Jaskólski, A.
Powiązania:
https://bibliotekanauki.pl/articles/949739.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
choroba Parkinsona
elektromiografia
myotonometria
lek
Parkinson's disease
electromyography
myotonometry
motor control
joint angle
medication
Opis:
Heightened tonic stretch reflex contributes to increased muscle tone and a more-flexed resting elbow joint angle (EJA) in patients with Parkinson’s disease (PD). Dopaminergic medication restores central nervous system (CNS) functioning and decreases resting muscle electrical and mechanical activities. This study aimed to evaluate the effects of dopaminergic medication on parkinsonian rigidity, resting EJA, resting electrical activity (electromyography, EMG) and mechanical properties (myotonometry, MYO) of elbow flexor muscles and the associations of EJA with these muscles resting electrical activity and mechanical properties in PD patients. We also evaluated a relationship between dopaminergic treatment dose and these outcome measures values. Methods: Ten PD patients (age 68 ± 10.1 years; body mass 70 ± 16.8 kg; height 162 ± 6.6 cm; illness duration 9 ± 4.5 years) were tested during medication on- and off-phases. Resting EJA, myotonometric muscle stiffness (S-MYO) and root mean square electromyogram amplitude (RMS-EMG) were recorded from relaxed biceps brachii and brachioradialis muscles. Based on the above parameters, we also calculated the EJA/S-MYO ratio and EJA/RMS-EMG ratio. Parkinsonian rigidity was assessed using the motor section of the Unified Parkinson’s Disease Rating Scale. Results: EJA, EJA/S-MYO ratio, and EJA/RMS-EMG ratio were increased and S-MYO, RMS-EMG, and parkinsonian rigidity were decreased during the medication on-phase compared with the off-phase. In addition, the dopaminergic treatment dose was negatively correlated with S-MYO and RMS-EMG, and positively correlated with EJA/SMYO and EJA/RMS-EMG ratios. Conclusions: We conclude that dopaminergic medication-induced improvements in resting elbow joint angle in tested patients with PD are related to changes in their muscle electrical and mechanical properties.
Źródło:
Acta of Bioengineering and Biomechanics; 2018, 20, 4; 75-82
1509-409X
2450-6303
Pojawia się w:
Acta of Bioengineering and Biomechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Stress-tolerant antagonistic plant growth-promoting rhizobacteria from Zea mays
Autorzy:
Kaur, A.
Devi, S.R.
Vyas, P.
Powiązania:
https://bibliotekanauki.pl/articles/66648.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
plant disease
biological control
plant health
antagonism
plant growth
Bacillus
maize
Zea mays
stress tolerance
phosphate solubilization
Opis:
Biological control of plant diseases is strongly emerging as an effective alternative to the use of chemical pesticides and fungicides. Stress tolerance is an important attribute in the selection of bacteria for the development of microbial inoculants. Fourteen salt-tolerant bacteria showing different morphological features isolated from the rhizosphere of maize were evaluated for different plant growth-promoting activities. All isolates showed auxin production ranging from 5 to 24 μg ⋅ ml–1 after 48 h incubation in tryptophan supplemented media. Phosphate solubilization ranged from 15 to 419 μg ⋅ ml–1. 1-aminocycloproprane- 1-carboxylate (ACC) deaminase activity was shown by 6 isolates, ammonia production by 9 isolates, siderophore production by 8 isolates while HCN production by 4 isolates. Four bacterial isolates with all plant growth-promoting properties also showed strong antagonistic activities against Fusarium oxysporum, F. verticillioides, Curvularia lunata and Alternaria alternata and abiotic stress tolerance against salinity, temperature, pH and calcium salts. Two selected bacterial isolates significantly enhanced the growth of pea and maize test plants under greenhouse conditions. The bacterial isolate M1B2, which showed the highest growth promotion of test plants, was identified as Bacillus sp. based on phenotypic and 16S rDNA gene sequencing. The results indicated that Bacillus sp. M1B2 is a potential candidate for the development of microbial inoculants in stressful environments.
Źródło:
Journal of Plant Protection Research; 2018, 58, 2
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ nanocząstek srebra i miedzi na wzrost i ograniczanie pasożytniczej zgorzeli siewek sosny zwyczajnej (Pinus sylvestris L.) w szkółce Nadleśnictwa Spychowo
Effect of silver and copper nanoparticles on growth and the control of damping-off disease in Scots pine (Pinus sylvestris L.) in the nursery of Spychowo Forest District
Autorzy:
Aleksandrowicz-Trzcińska, M.
Szaniawski, A.
Sołtys, A.
Baszak, K.
Studnicki, M.
Powiązania:
https://bibliotekanauki.pl/articles/986655.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
szkolki lesne
sosna zwyczajna
Pinus sylvestris
zgorzel siewek
ochrona roslin
zwalczanie chorob roslin
nanoczastki
nanoczastki srebra
nanoczastki miedzi
skutecznosc dzialania
seedling growth
disease control
pinus sylvestris
damping−off disease
nanoparticles
Opis:
Nanoparticles are gaining ever−wider application in plant production (for both agriculture and forestry), in the role of pesticides, as well as stimulators of plant growth and resistance. We sought to determine the efficacy of silver and copper nanoparticles (AgNPs and CuNPs respectively), used as seed dressings or subjected to foliar application, in affording protection from parasitic damping−off disease among soil−grown seedlings of Scots pine in a forest nursery. Experiments also assessed the influence of the nanoparticles on the growth of the plants potentially safeguarded in this way. Nanoparticles were used in seed soaking and foliar spraying at 50 ppm concentration. Pines treated with fungicides (Zaprawa Nasienna T 75 DS, Acrobat MZ 69 WG, Topsin M 500 SC, Gwarant 500 SC, Thiram Granuflo 80 WG and Signum 33 WG) or unprotected at all were used for comparison. In each treatment (AgNPs, CuNPs, fungicides or unprotected), seedlings were inventoried 6 weeks after the sowing and at the end of the growing season, while all individuals on 80 1−m−long segments of seed row were counted. At the end of the growing season, shoot length, root−collar diameter, root length and dry mass of shoots and roots were determined. The seedlings treated with nanoparticles had longer root systems of greater dry mass, but also only more weakly−developed above−ground parts (both height and dry mass being limited) in comparison with young Scots pines that had been fungicide−treated or were unprotected. It resulted in a significantly more favourable ratio between shoot and root masses, where nanoparticle treatment had been applied. The effectiveness of the protection extended to the germination and first−growth stages up to 6 weeks from the time of sowing was furthermore shown to be greatest where AgNPs had been applied, while at the season end there were comparable results among pines treated with either nanoparticles or fungicides. Our results thus indicate that nanoparticles limit damping−off disease in pine seedlings (AgNPs more effectively than CuNPs), with that effectiveness also proving comparable with that noted for the fungicides applied traditionally.
Źródło:
Sylwan; 2018, 162, 06; 490-498
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 89

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