scholarly journals Refinement of the methodology for assessing the resistance of hazel (hazelnuts) to stress factors

2021 ◽  
Vol 17 (5) ◽  
pp. 106-113
Author(s):  
S. G. Biganova ◽  
Yu. I. Sukhorukikh ◽  
E. K. Pchikhachev
Keyword(s):  
Abiotic Factors ◽  
The State ◽  
Stress Factors ◽  
Final Conclusion ◽  
Vegetative Organs ◽  
Apical Buds ◽  
Whole Plant ◽  
Degree Of Damage ◽  
Fallen Leaves ◽  
Assessment Scales

The aim of the research is to clarify the methodology for assessing the resistance of hazel (hazelnuts) to stress factors on the basis of uniform approaches adopted in walnut farming. The assessment of resistance to biotic and abiotic factors has been carried out according to the methods recommended for the walnut, and the state of the vegetative and generative organs of hazel (hazelnuts) has been correlated with the program requirements. The result has been the development of 7 point assessment scales and the numerical values of the degree of damage correlated with them. Score 0 corresponds to the absence of lesions, 1 – lesions up to 5%, 2 – lesions up to 6–10%, 3 – lesions up to 11–25%, 4 – lesions up to 26–50%, 5 – lesions up to 51–75%, 6 – lesions more than 75% or death of the whole plant (depending on the studied indicator). The assessment scale for the winter hardiness of vegetative organs takes into account the degree of damage to the apical buds, annual shoots, branches of two years and older, the stem and the whole plant. Damage to male inflorescences is determined by the length of their dead part, to the female flowers – by the number of damaged ones, expressed as a percentage. The degree of drought resistance is revealed on the basis of studying the state of the entire plant, the percentage of damaged and fallen leaves. The influence of drought on the loss of food part is established by the degree of shrinkage of the kernel. Susceptibility to diseases and pests is estimated in percentage points separately for leaves by area, shoots in length, nuts by the ratio of damaged and undamaged ones. We have distinguished 6 groups of resistance, depending on the degree of vulnerability of varieties and forms of hazel (hazelnuts). It has been proposed to draw conclusions on the basis of at least three years of observations, and the final conclusion should be focused on specific breeding goals.

Comparative characteristics of educational stress and mental health of senior medicine students at different universities (results of an interregional study)

2020 ◽  
pp. 34-46
Author(s):  
Victoria Ruzhenkova ◽  
Irina Sheremet’eva ◽  
Viktor Ruzhenkov
Keyword(s):  
Mental Health ◽  
Medical Students ◽  
The State ◽  
Panic Attacks ◽  
Stress Factors ◽  
Anxiety And Depression ◽  
State University ◽  
The Future ◽  
Training Stress ◽  
Medical University

Stress negatively affects the mental health of students, causes anxiety and depression, leads to poor academic performance, lowers level of professional training and success in the future. The purpose of the research is to study the state of mental health of medical students to develop recommendations for the prevention of maladaptation. Materials and methods. 252 5-year students aged 20–29 (22 ± 1,1) years, 168 (66,7 %) females and 84 (33,3 %) males (137 students of Belgorod State University and 115 of Altay State Medical University (ASMU)) were examined by medico-sociological and psychometric methods. Results. It was established that every fifth student of the Belgorod State University and every third of the ASMU did not enter the medical university on their own initiative. Less than half (43 %) of Belgorod State University students and 30.4 % of the ASMU ones are convinced that the choice of profession was correct, 35 and 37.4 % are, consequently, completely disappointed with it. Students of Belgorod State University dealt with training stress factors poorer and, as a result, have more pronounced mental symptoms of training stress, difficulties in organizing the daily regimen, irregular nutrition, and fear of the future. Regardless of the region of studying, the number of students not committed to the medical profession, after 5 years of study, is more than 3 times higher among those who enter the university not on their own initiative. Students of the ASMU hit substances, skipped classes, played computer games and took sedative drugs more often to overcome academic stress. The degree of anxiety before the exams in students of Belgorod State University was higher (9 points) than in their peers from the State Medical University (7 points). An extremely high (8–10 points) level of anxiety before exams was characteristic of 75,9 and 44,3 % of students, respectively. The former were more likely to experience clinically significant panic attacks: 27,7 and 6,1 %. Conclusion. Given the high incidence of social phobia (19,1–24,1 %), depression (22,6–32,2 %) and anxiety (21,9– 27,8 %) among medical students, the development and implementation of psycho-correctional programs aimed at the formation of adaptive ways to overcome stress, reduce anxiety and depression is required. This will prevent the development of psychosomatic disorders and addictions.

scholarly journals Delayed Senescence in Soybean: Terminology, Research Update, and Survey Results from Growers

2016 ◽  
Vol 17 (2) ◽  
pp. 76-83 ◽  
Author(s):  
C. J. Harbach ◽  
T. W. Allen ◽  
C. R. Bowen ◽  
J. A. Davis ◽  
C. B. Hill ◽  
...  
Keyword(s):  
Abiotic Factors ◽  
Biotic Factors ◽  
Delayed Senescence ◽  
Plant Parts ◽  
Whole Plant ◽  
Research Findings ◽  
Survey Results ◽  
Soybean Plants ◽  
Grower Survey ◽  
Specific Symptoms

The terms used to describe symptoms of delayed senescence in soybean often are used inconsistently or interchangeably and do not adequately distinguish the observed symptoms in the field. Various causes have been proposed to explain the development of delayed senescence symptoms. In this article, we review published reports on delayed senescence symptoms in soybean, summarize current research findings, provide examples of terms related to specific symptoms, and present an overview of the results of a multi-state survey directed to soybean growers to understand their concerns about delayed soybean senescence. Some of these terms, such as green bean syndrome and green stem syndrome, describe symptoms induced by biotic factors, while other terms describe symptoms associated with abiotic factors. Some delayed senescence terms involve the whole plant remaining green while other terms include just the stem and other plant parts such as pods. In the grower survey, 77% reported observing soybean plants or plant parts that remained green after most plants in the field were fully mature with ripe seed. Most respondents attributed these symptoms to changes in breeding and choice of cultivars. At the end of this article, we standardized the terms used to describe delayed senescence in soybean. Accepted for publication 23 March 2016. Published 15 April 2016.

scholarly journals Why and How to Make Plant Conservation Ecosystem-Based

2012 ◽  
Vol 1 (1) ◽  
pp. 48 ◽  
Author(s):  
Alan Hamilton ◽  
Shengji Pei ◽  
Huyin Huai ◽  
Seona Anderson
Keyword(s):  
Information Systems ◽  
Ecosystem Services ◽  
Plant Species ◽  
Plant Cover ◽  
Plant Conservation ◽  
The State ◽  
The Earth ◽  
Whole Plant ◽  
Training Programmes ◽  
Ecologically Sustainable

Compared to other groups of organisms, plants require distinctive approaches in their conservation because of their keystone roles in ecosystems and economies. The state of the whole plant cover of the Earth should be of concern to conservationists – for its capacity to ensure the survival of plant species, deliver ecosystem services (locally to globally) and provide produce from plants in ecologically sustainable ways. The primary targets of attention in ecosystem-based plant conservation are the relationships between people and plants, as relevant to every locality, rather than the species-centric approach of conventional plant conservation. Moving plant conservation to an ecosystem-based approach will require the development of training programmes for field practitioners and of information systems for their use.

scholarly journals Effect of abiotic factors on sulfidogenic activity of bacteria Desulfuromonas sp.

2020 ◽  
Vol 11 (2) ◽  
pp. 170-174
Author(s):  
O. M. Сhaіka ◽  
T. B. Peretyatko
Keyword(s):  
Hydrogen Sulfide ◽  
Cell Density ◽  
Elemental Sulfur ◽  
Abiotic Factors ◽  
Electron Acceptors ◽  
Stress Factors ◽  
Sulfide Concentration ◽  
Sulfur Concentration ◽  
Reducing Bacteria ◽  
Hydrogen Sulfide Concentration

Sulfur-reducing bacteria are promising agents for the development of new methods of wastewater treatment with the removal of ions of heavy metals and organic compounds. Study of the effect of various environmental factors on the growth and sulfidogenic activity of sulfur-reducing bacteria allows one to investigate the adaptability of these microorganisms to stress factors. The paper deals with the effect of рН, different concentrations of elemental sulfur, hydrogen sulfide and presence of various electron acceptors on the growth and sulfidogenic activity of bacteria Desulfuromonas sp. YSDS-3. The calculation of C/S ratio for sulfur-reducing bacteria Desulfuromonas sp. YSDS-3 was made, with the comparison with similar parameters of sulfate-reducing bacteria. In the medium with elemental sulfur, concentration of hydrogen sulfide increased with the concentration of elemental sulfur. Bacteria Desulfuromonas sp. YSDS-3 accumulated their biomass in the most effective way at the concentration of elemental sulfur of 10–100 mM. In the medium with polysulfide form of sulfur at the neutral pH, bacteria produced hydrogen sulfide and accumulated biomass the best. Hydrogen sulfide at the concentration of 3 mM did not inhibit the bacterial growth, but further increase in the hydrogen sulfide concentration inhibited the growth of bacteria. The bacteria did not grow at the hydrogen sulfide concentration of 25 mM and above. As the concentration of elemental sulfur and cell density increases, sulfidogenic activity of the bacteria grows. Presence of two electron acceptors (S and K2Cr2O7, S and MnO2, S and Fe (III)) did not affect the accumulation of biomass of the bacteria Desulfuromonas sp. YSDS-3. However, under such conditions the bacteria accumulated 1.5–2.5 times less hydrogen sulfide than in the test medium. After 12–24 h of cultivation, different concentrations of elemental sulfur had a significant effect on the sulfidogenic activity. However, during 3–16 days of cultivation, the percentage of effect of elemental sulfur concentration decreased to 31%, while the percentage of effect of cell density increased threefold. Presence in the medium of the electron acceptors (Cr (VI), MnO2, Fe (III)) alternative to elemental sulfur led to a significant decrease in the content of hydrogen sulfide produced by sulfur-reducing bacteria.

scholarly journals Comparison of different scales for the evaluation of anxiety and compliance with anesthetic induction in children undergoing scheduled major outpatient surgery

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Alberto Vieco-García ◽  
Amanda López-Picado ◽  
Manuel Fuentes ◽  
Laura Francisco-González ◽  
Belén Joyanes ◽  
...  
Keyword(s):  
Trait Anxiety ◽  
Outpatient Surgery ◽  
The State ◽  
Anxiety Scale ◽  
Preoperative Anxiety ◽  
State Trait Anxiety Inventory ◽  
Anesthetic Induction ◽  
The Moment ◽  
Assessment Scales ◽  
Surgical Unit

Abstract Introduction Anxiety in children triggered by a scheduled surgical intervention is a major issue due to its frequency and consequences. Preoperative anxiety is associated with increased patient fear and agitation on anesthetic induction. The aim of this study is to compare three preoperative anxiety scales for children undergoing elective outpatient surgery, and to correlate each of these tools with the degree of patient compliance on induction, as assessed by the Induction Compliance Checklist (ICC). Methods An observational prospective study was performed on a cohort of children with ages between 2 and 16 years old, scheduled for outpatient surgery. Anxiety was assessed upon arrival to the hospital (M0), during transfer to the surgical unit (M1), and in the operating room during anesthetic induction (M2). Anxiety in the parents (measured with the State-Trait Anxiety Inventory, STAI) and in the children (measured with the Spence Anxiety Scale-Pediatric, SCAS-P, the State-Trait Anxiety Inventory Children, STAIC, and Modified Yale Preoperative Anxiety Scale, m-YPAS) was assessed. Compliance with anesthetic induction was assessed with ICC. Results The study included 76 patients (72.4% male, median age 7.9 years). Anxiety scores (m-YPAS) increased as the moment of surgery approached, being greater at the entrance to the surgical unit (M0 = 26.1 ± 9.5; M1 = 31.8 ± 18.1; M2 = 33.5 ± 21.1). A strong correlation was found between ICC scale and m-YPAS at M1 (0.738) and M2 timepoints (0.794), but not with the rest of scales at M0. Conclusions Standard anxiety assessment scales do not predict the quality of anesthetic induction. m-YPAS scale can detect increasing anxiety in children as they approach the surgical procedure and this correlates strongly with a worse anesthetic induction, defined by higher score on ICC scale.

scholarly journals Mujeres inmigrantes privadas de libertad

2019 ◽  
pp. 89-96
Author(s):  
Petra Márquez Gento
Keyword(s):  
Quantitative Data ◽  
Immigrant Women ◽  
The State ◽  
Final Conclusion ◽  
Migration Policies ◽  
Inmate Population ◽  
Disadvantaged Groups ◽  
Las Mujeres ◽  
Criminal Profile ◽  
Mujeres Inmigrantes

Se revisa brevemente el estado de la mujer en la cárcel y su perfil delictivo y los correspondientes datos cuantitativos de cárceles españolas. Se propone un proyecto de investigación e intervención cuyo objetivo principal es detectar los niveles de éxito o fracaso del colectivo de mujeres inmigrantes en su doble adaptación, a través de la observación de las distintas estrategias de asimilación que poseen. Todo ello, llevaría a una conclusión final, que sería obtener un perfil sociocultural de las mujeres inmigrantes. Esto llevaría a una intervención adecuada por parte de las instituciones o servicios que se ocupen de dar ayuda a colectivos desfavorecidos, y /o dar datos sobre la población reclusa a las políticas migratorias. It will be reviewed briefly the state of the woman in prison and her criminal profile and the corresponding quantitative data of Spanish prisons are briefly reviewed. A research and intervention project is proposed whose main objective is to detect the levels of success or failure of the immigrant women in their double adaptation, through the observation of the different assimilation strategies they have. All this, would lead to a final conclusion, which would be to obtain a sociocultural profile of immigrant women. This would lead to an adequate intervention by institutions or services that deal with giving assistance to disadvantaged groups, and / or giving information about the inmate population to migration policies.

Evaluation of the aesthetic qualities and adaptability of introduced ornamental apple trees from the genetic collection of the Orenburg Branch of the Federal Horticultural Research Center for Breeding, Agrotechnology and Nursery

2021 ◽  
Vol 67 ◽  
pp. 78-88
Author(s):  
E. M. Feschenko
Keyword(s):  
Abiotic Factors ◽  
Average Diameter ◽  
Research Center ◽  
Apple Trees ◽  
Vegetative Organs ◽  
Royal Horticultural Society ◽  
Red Color ◽  
Ornamental Crops ◽  
The Rich ◽  
The Aesthetic

The study of ornamental and adaptive qualities of Malus Mill. from the genetic collection of ornamental crops of the Orenburg branch of the Research Center of Horticulture was carried out to assess the gene pool of introduced wild apple tree species and forms and identify suitable for the urban landscaping and the breeding process. Such characteristics as habitus, abundance of flowering, color and number of flowers in the inflorescence, color of vegetative organs, flowers and fruits during the season were taken into account; resistance to major diseases and adverse abiotic factors was evaluated. Additionally, the color of buds and flowers was characterized on the basis of the RHS (Royal Horticultural Society Color Chart). As a result of a preliminary survey on the complex of ornamental qualities and the level of adaptability, 5 most promising species were identified, which received the best ratings on the ornamental scale. Malus sikkimensis (Wenz.) Koehne ex C. K. Schneid. (31 points) was characterized by an attractive habit, the presence of flowers with a diameter of up to 40 mm and subsequently fruits that acquire a yellow-red color. Malus sargentii Rehder (29 points) was notable for its compact rounded crown, a large number of flowers with a diameter of 30 mm, followed by the formation of fruits with a dark red color. Malus floribunda Siebold ex Van Houtte (28 points) was distinguished by a large number of fragrant flowers in an umbrella-shaped inflorescence (5 — 7 pcs) with an average diameter of 30 mm, as well as attractive red-yellow fruits. Malus sieboldii (Regel) Rehder, M. toringo Siebold (28 points) was interesting primarily by the presence of 5 -7 flowers of 20 — 30 mm in the inflorescence and decorative fruits, the color of which varies from yellow to red. Malus niedzwetzkyana Dieck (28 points) attracted attention to the rich purple color of all organs due to the presence of a large number of anthocyanins, it was also worth noting the presence of a pleasant aroma during flowering and large flowers with an average diameter of 40 mm. The selected ornamental types of apple trees are favorable for use in landscaping of various scales, they are recommended for breeding work as initial parent forms.

scholarly journals Isolation of antimicrobial peptides from different plant sources: Does a general extraction method exist?

Plant Methods ◽  
2020 ◽  
Vol 16 (1) ◽  
Author(s):  
Anna S. Barashkova ◽  
Eugene A. Rogozhin
Keyword(s):  
Antimicrobial Peptides ◽  
Large Scale ◽  
Molecular Diversity ◽  
Extraction Methods ◽  
Biologically Active ◽  
Stress Factors ◽  
Structural Types ◽  
Whole Plant ◽  
Plant Sources ◽  
Large Scale Screening

Abstract Plants are good sources of biologically active compounds with antimicrobial activity, including polypeptides. Antimicrobial peptides (AMPs) represent one of the main barriers of plant innate immunity to environmental stress factors and are attracting much research interest. There are some extraction methods for isolation of AMPs from plant organs based on the type of extractant and initial fractionation stages. But most methods are directed to obtain some specific structural types of AMPs and do not allow to understand the molecular diversity of AMP inside a whole plant. In this mini-review, we suggest an optimized scheme of AMP isolation from plants followed by obtaining a set of peptides belonging to various structural families. This approach can be performed for large-scale screening of plants to identify some novel or homologous AMPs for fundamental and applied studies.

scholarly journals Etiology and epidemiology of Pythium root rot in hydroponic crops: current knowledge and perspectives

2006 ◽  
Vol 32 (4) ◽  
pp. 307-321 ◽  
Author(s):  
John Clifford Sutton ◽  
Coralie Rachelle Sopher ◽  
Tony Nathaniel Owen-Going ◽  
Weizhong Liu ◽  
Bernard Grodzinski ◽  
...  
Keyword(s):  
Nutrient Solution ◽  
Root Rot ◽  
Root Zone ◽  
Pythium Ultimum ◽  
Stress Factors ◽  
Pythium Root Rot ◽  
Whole Plant ◽  
Phenolic Substances ◽  
Hydroponic Systems ◽  
The Impact

The etiology and epidemiology of Pythium root rot in hydroponically-grown crops are reviewed with emphasis on knowledge and concepts considered important for managing the disease in commercial greenhouses. Pythium root rot continually threatens the productivity of numerous kinds of crops in hydroponic systems around the world including cucumber, tomato, sweet pepper, spinach, lettuce, nasturtium, arugula, rose, and chrysanthemum. Principal causal agents include Pythium aphanidermatum, Pythium dissotocum, members of Pythium group F, and Pythium ultimum var. ultimum. Perspectives are given of sources of initial inoculum of Pythium spp. in hydroponic systems, of infection and colonization of roots by the pathogens, symptom development and inoculum production in host roots, and inoculum dispersal in nutrient solutions. Recent findings that a specific elicitor produced by P. aphanidermatum may trigger necrosis (browning) of the roots and the transition from biotrophic to necrotrophic infection are considered. Effects on root rot epidemics of host factors (disease susceptibility, phenological growth stage, root exudates and phenolic substances), the root environment (rooting media, concentrations of dissolved oxygen and phenolic substances in the nutrient solution, microbial communities and temperature) and human interferences (cropping practices and control measures) are reviewed. Recent findings on predisposition of roots to Pythium attack by environmental stress factors are highlighted. The commonly minor impact on epidemics of measures to disinfest nutrient solution as it recirculates outside the crop is contrasted with the impact of treatments that suppress Pythium in the roots and root zone of the crop. New discoveries that infection of roots by P. aphanidermatum markedly slows the increase in leaf area and whole-plant carbon gain without significant effect on the efficiency of photosynthesis per unit area of leaf are noted. The platform of knowledge and understanding of the etiology and epidemiology of root rot, and its effects on the physiology of the whole plant, are discussed in relation to new research directions and development of better practices to manage the disease in hydroponic crops. Focus is on methods and technologies for tracking Pythium and root rot, and on developing, integrating, and optimizing treatments to suppress the pathogen in the root zone and progress of root rot.

scholarly journals FAKTOR RESIKO DAN KElADIAN LEPTOSPIROSIS DI KABUPATEN PONOROGO (Studi Kasus Di Wilayah Kecamatan Ngrayun Dan Kecamatan Badegan Tahun 2014)

2014 ◽  
Vol 12 (2) ◽  
Author(s):  
Rahma Ika Pratiwi ◽  
Siti Surasri ◽  
Koerniasari .
Keyword(s):  
Risk Factors ◽  
The State ◽  
Farm Animals ◽  
Final Conclusion ◽  
Research Subjects ◽  
Counseling And Testing ◽  
Biological Environment ◽  
Associated Risk Factors ◽  
First Time

Leptospirosis is a zoonotic disease with rodents (rat), pigs, cows, goats, sheep, horses, dogs, cats,birds, insectivores (hedgehogs, bats, squirrels) acting as the reservoir that have been infected by theagent of the disease leptospiroses leptospira bacteria. leptospiroses outbreak in Ponorogo namely inNgrayun Sub District in 2011 until 2013 marked the highest the number of cases. In 2013 an incident ofleptospiroses involved 20 patients in Ngrayun sub district and 7 people in the district Badegan subdistrictand in 2013 leptospiroses appeared for the first time in Badegan. The purpose of this study was todetermine the risk factors and the occurrence of leptospirosis cases in Ngrayun and Badegan subdistrictsof Ponorogo in 2014.The type of this research is descriptive with case study design to assessand describe the conditionof the cases and the associated risk factors . The research subjects were leptospiroses patients and theirhomes. Research variables in this study were the physical environment, biological environment, socialenvironment, and behavioral factors.Results of the observations and interviews using Guttman scale factors included the state of thephysical environment, poor water storage, poor use of river/weill, and the distance of the waste collection.Biological environment factors included the presenceof rats, the presence of farm animals or pets. Socialenvironmental factors included the level of education and type of occupation, they were also poor.Behavioral factors which included the habit of bathing, washing hands, use of footwear, treatment ofwounds, were all in poor state.The final conclusion is that the state of the risk factors, that include the physical environment.biological/ social and behavioral factors are in poor state. These call for counseling and testing of ROTtoimprove knowledge and insiqhts and to change people's behavior and to review the leptospirosesprevention program

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