scholarly journals Evaluation of the electrical conductivity of forest seeds after digestive tract of wild birds

2018 ◽  
Vol 40 ◽  
pp. 79
Author(s):  
Sérgio Thode Filho ◽  
Heider Alves Franco ◽  
Emanuele Nunes Nunes de Lima Figueiredo Jorge ◽  
Miqueias Da Silva Fernandes ◽  
Ildemar Ferreira ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Digestive Tract ◽  
Wild Birds ◽  
Individual Level ◽  
Genetic Potential ◽  
Physiological Quality ◽  
The Individual ◽  
Forest Seeds

The production of seedlings encompasses the need for knowledge of plant physiology, mainly related to seeds and their minutiae. The seed is the vehicle that carries the full genetic potential of a cultivar with superior characteristics. Vigor can be described as that seed property that determines its emergence under unfavorable conditions. According to the International Seed Testing Association (ISTA). The process of reforestation can happen through the production of seedlings and, through seed dispersal, this can occur due to the action of the plant itself (autochory), water (hydrochory), wind (anemochory), animals (zoochory), etc. The current work aimed to investigate the feasibility of using the individual electrical conductivity test to evaluate the physiological quality of seeds of forest species after passage through the digestive tract of wild birds. The results allowed inferring that the forest seeds after digestive tract of wild birds presented low electrical conductivity at the individual level. Thus, the seeds in study no presented loss force after digestive tract of wild birds.  Therefore, the birds only performed the role of individual dispersant.

scholarly journals Evaluation of the seedvigor of Tournefortia paniculata Cham. post-digestive tract of the ruby-crowned tanager Tachyphonus coronatus (Vieillot, 1822)

2019 ◽  
Vol 41 ◽  
pp. 15
Author(s):  
Sérgio Thode Filho ◽  
Heider Alves Franco ◽  
Emanuele Nunes de Lima Figueiredo Jorge ◽  
Mariana De Souza Oliveira ◽  
Jhon Lenon Genovez de Oliveira ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Digestive Tract ◽  
Digestive System ◽  
Forest Species ◽  
Ecological Process ◽  
Germination Test ◽  
Individual Level ◽  
Physiological Quality ◽  
The Individual

Endozoochory (dispersion with passage through the digestive system of animals) is one of the most important processes. It is included in the ecological process known as dispersive mutualism, benefit the species involved. The most used method to evaluate the physiological quality of seeds is carried out based on the traditional germination test. However, electrical conductivity tests with seeds of forest species are still scarce, especially those developed with the individual method, which provide greater fidelity to the results so that through this one can define the test by the mass methods. The current work aimed to investigate the vigor, from the electrical conductivity of the seeds of Tournefortia paniculata Cham. after passage through the digestive tract of a ruby-crowned tanager Tachyphonus coronatus (Vieillot, 1822). An expedition was conducted in a fragmented area of Atlantic Forest in process of reforestation in the campus of the IFRJ. After the capture of the passerine with mist nets, proceeded the identification of seeds shed in its feces. The experimental design was completely randomized with one treatments with five replicates. The results allowed concluded that the seed of the T. paniculata Cham. after digestive tract of the ruby-crowned tanager presented high electrical conductivity in three of its replicates at the individual level. 

scholarly journals Massal and Individual Electrical Conductivity Tests and its Relationships with the Physiological Quality of Sweet Sorghum Seeds

2020 ◽  
Vol 8 (2) ◽  
pp. 407
Author(s):  
Joner Silveira Dalcin ◽  
Caren Alessandra Müller ◽  
Ubirajara Russi Nunes ◽  
Rodrigo Roso ◽  
Alberto Cargnelutti Filho ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Cold Test ◽  
Dry Mass ◽  
Shoot Length ◽  
Tukey Test ◽  
Physiological Quality ◽  
Rapid Tests ◽  
The Individual ◽  
The Relationship

Rapid tests such as electrical conductivity provide fast and consistent results regarding stratification of seed lots by vigor. They are important tools used to evaluate the physiological quality of seeds of several species, however, no such information was found for Sorghum bicolor. The objective of this study was to evaluate the relationship between the physiological quality of the seeds by the mass and individual conductivity tests. Four plots of the Fepagro 19 cultivar were analyzed through the degree of moisture, weight of one thousand seeds, first count and germination, radicular and shoot length, dry mass, cold test and emergence of field seedlings. Subsequently, they were submitted to mass electrical conductivity experiments with variations in the imbibition time (2, 4, 6, 8, 12 and 24 hours), temperature (20, 25 and 30 ºC), number of seeds (25 and 50), volume of water (50 and 75 mL) and individual (2, 4, 6, 8, 12 and 24 hours). The design was completely randomized and the data evaluated by the Tukey test. Only the lowest physiological quality batch was detected in the 20 °C, 75 mL and 25 seeds for 12 hours combinations; the individual test detected the least physiological quality batch, and it was possible to perform it in 24 hours.

Reciprocity of trust between managers and team members

2019 ◽  
Vol 49 (2) ◽  
pp. 653-669
Author(s):  
Vicente Martínez-Tur ◽  
Agustín Molina ◽  
Carolina Moliner ◽  
Esther Gracia ◽  
Luisa Andreu ◽  
...  
Keyword(s):  
Service Quality ◽  
Critical Role ◽  
Well Being ◽  
Content Type ◽  
Team Members ◽  
Individual Level ◽  
The Individual ◽  
High Engagement

Purpose The purpose of this paper is to propose that the manager’s perception of the service quality delivered by his/her team acts as a precursor of his/her trust in team members. In turn, the manager’s trust in team members is related to team members’ trust in the manager. Furthermore, engagement and burnout at the individual level are considered outcomes of trust reciprocity. Design/methodology/approach The authors test this trust-mediated multilevel model with a sample of 95 managers and 754 team members working in services for people with intellectual disability. These services are delivered by team-based structures of workers who perform coordinated tasks. Findings The findings suggest that service quality delivered by team members is positively and significantly related to the manager’s trust in them. The results also suggest that the manager’s trust in team members leads to the trust that managers received by team members. Finally, team members who trust their managers show less burnout and high engagement. Research limitations/implications Previous literature has neglected the reciprocity of trust. In contrast, this research study considered the perspective of both managers and team members and how this reciprocity of trust is related to service quality and well-being at work. Practical implications The current study highlights the critical role of service quality and achieving high-quality relationships between managers and team members. Originality/value Performance and well-being are compatible because team members’ efforts are compensated by forming relationships with managers based on trust, and the quality of these relationships, in turn, prevents burnout and stimulates engagement among employees.

scholarly journals Electrical conductivity test for evaluation of the pea seed vigor

2020 ◽  
Vol 1 (1) ◽  
pp. 89
Author(s):  
Edvan Costa da Silva ◽  
Wagner Menechini ◽  
Carolina Dos Santos Galvão ◽  
Luís Augusto Batista de Oliveira ◽  
Natália Cássia de Faria Ferreira ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Pisum Sativum ◽  
Low Cost ◽  
Seed Vigor ◽  
State University ◽  
Randomized Experimental Design ◽  
Physiological Quality ◽  
Pea Seeds ◽  
The Individual

The electrical conductivity test is routinely used to differentiate the physiological quality of seed lots, and has stood out for its ease of execution, low cost, speed, repeatability, and straightforward interpretation of results. This study aimed to establish a methodology for the electrical conductivity test in pea seeds (Pisum sativum L.) involving seed quantity and seed imbibition periods. The experiment was carried out at the Multidisciplinary Laboratory of the State University of Goiás, the campus of Ipameri Campus, in 2018. Pea seeds (Pisum sativum) stored in the seed laboratory of the same institution were used for this experiment. The completely randomized experimental design with four replications in a 4x6 factorial scheme was used. Four quantity of seeds (25, 50, 75, and 100 seeds) and six imbibition periods (4, 8, 12, 16, 20, and 24 h) at 25ºC were evaluated. The electrical conductivity test was performed with four replicates of 25, 50, 75, and 100 seeds each, weighed on a precision scale (0.001g) and placed in disposable plastic cups, with a capacity of 200 mL, containing 75 mL of distilled water. The cups were then kept in a BOD chamber, set at 25°C, and the measuring was performed after 4, 8, 12, 16, 20, and 24 h of imbibition with a conductivity meter and results were expressed in μS cm-1 g-1. There were no significant results for the interaction between the number of seeds and the imbibition time. Significant results were observed only for the individual effects of each factor. It is recommended to use 100 seeds of Maria pea, and 24 h for the electrical conductivity test.

scholarly journals System models for resilience in gerontology: application to the COVID-19 pandemic

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Katarzyna Klasa ◽  
Stephanie Galaitsi ◽  
Andrew Wister ◽  
Igor Linkov
Keyword(s):  
The Elderly ◽  
System Level ◽  
Improve Quality ◽  
Care Needs ◽  
Individual Level ◽  
Chronic Stressors ◽  
The World ◽  
Aging Adults ◽  
The Individual

AbstractThe care needs for aging adults are increasing burdens on health systems around the world. Efforts minimizing risk to improve quality of life and aging have proven moderately successful, but acute shocks and chronic stressors to an individual’s systemic physical and cognitive functions may accelerate their inevitable degradations. A framework for resilience to the challenges associated with aging is required to complement on-going risk reduction policies, programs and interventions. Studies measuring resilience among the elderly at the individual level have not produced a standard methodology. Moreover, resilience measurements need to incorporate external structural and system-level factors that determine the resources that adults can access while recovering from aging-related adversities. We use the National Academies of Science conceptualization of resilience for natural disasters to frame resilience for aging adults. This enables development of a generalized theory of resilience for different individual and structural contexts and populations, including a specific application to the COVID-19 pandemic.

scholarly journals Ambidexterity as Practice: Individual Ambidexterity Through Paradoxical Practices

2020 ◽  
Vol 56 (2) ◽  
pp. 143-165 ◽  
Author(s):  
Angeliki Papachroni ◽  
Loizos Heracleous
Keyword(s):  
Organization Theory ◽  
Practice Theory ◽  
Greek Philosophy ◽  
Exploration And Exploitation ◽  
Individual Level ◽  
Competing Demands ◽  
The Individual ◽  
Previous Learning

Following the turn to practice in organization theory and the emerging interest in the microfoundations of ambidexterity, understanding the role of individuals in realizing ambidexterity approaches becomes crucial. Drawing insights from Greek philosophy on paradoxes, and practice theory on paradoxes and ambidexterity, we propose a view of individual ambidexterity grounded in paradoxical practices. Existing conceptualizations of ambidexterity are largely based on separation strategies. Contrary to this perspective, we argue that individual ambidexterity can be accomplished via paradoxical practices that renegotiate or transcend boundaries of exploration and exploitation. We identify three such paradoxical practices at the individual level that can advance understanding of ambidexterity: engaging in “hybrid tasks,” capitalizing cumulatively on previous learning, and adopting a mindset of seeking synergies between the competing demands of exploration and exploitation.

scholarly journals How Can Psychological Science Help Counter the Spread of Fake News?

2021 ◽  
Vol 24 ◽  
Author(s):  
Sander van der Linden ◽  
Jon Roozenbeek ◽  
Rakoen Maertens ◽  
Melisa Basol ◽  
Ondřej Kácha ◽  
...  
Keyword(s):  
Research Agenda ◽  
Source Credibility ◽  
Fake News ◽  
Intervention Effectiveness ◽  
Motivated Cognition ◽  
Individual Level ◽  
Psychological Science ◽  
Open Questions ◽  
The Individual

Abstract In recent years, interest in the psychology of fake news has rapidly increased. We outline the various interventions within psychological science aimed at countering the spread of fake news and misinformation online, focusing primarily on corrective (debunking) and pre-emptive (prebunking) approaches. We also offer a research agenda of open questions within the field of psychological science that relate to how and why fake news spreads and how best to counter it: the longevity of intervention effectiveness; the role of sources and source credibility; whether the sharing of fake news is best explained by the motivated cognition or the inattention accounts; and the complexities of developing psychometrically validated instruments to measure how interventions affect susceptibility to fake news at the individual level.

scholarly journals Oral Sensitivity to Flowability and Food Neophobia Drive Food Preferences and Choice

Foods ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 1024
Author(s):  
Sharon Puleo ◽  
Paolo Masi ◽  
Silvana Cavella ◽  
Rossella Di Monaco
Keyword(s):  
Food Choice ◽  
Food Preferences ◽  
Food Neophobia ◽  
Individual Level ◽  
Choice Preference ◽  
Food Liking ◽  
Texture Sensitivity ◽  
The Individual ◽  
Oral Sensitivity

The study aimed to investigate the role of sensitivity to flowability on food liking and choice, the relationship between sensitivity to flowability and food neophobia, and its role in food liking. Five chocolate creams were prepared with different levels of flowability, and rheological measurements were performed to characterise them. One hundred seventy-six subjects filled in the Food Neophobia Scale and a food choice questionnaire (FCq). The FCq was developed to evaluate preferences within a pair of food items similar in flavour but different in texture. Secondly, the subjects evaluated their liking for creams (labelled affective magnitude (LAM) scale) and the flowability intensity (generalised labelled magnitude (gLM) scale). The subjects were clustered into three groups of sensitivity and two groups of choice preference. The effect of individual flowability sensitivity on food choice was investigated. Finally, the subjects were clustered into two groups according to their food neophobia level. The sensitivity to flowability significantly affected the liking of chocolate creams and the solid food choice. The liking of chocolate creams was also affected by the individual level of neophobia (p = 0.01), which, in turn, was not correlated to flowability sensitivity. These results confirm that texture sensitivity and food neophobia affect what a person likes and drives what a person chooses to eat.

The Evolution of the Role of U.S. School Nurses in Adolescent Mental Health at the Individual, Community, and Systems Level: An Integrative Review

2022 ◽  
pp. 105984052110681
Author(s):  
Ashwini R. Hoskote ◽  
Emily Croce ◽  
Karen E. Johnson
Keyword(s):  
Mental Health ◽  
Adolescent Mental Health ◽  
School Nurse ◽  
School Nurses ◽  
Integrative Review ◽  
School Nursing ◽  
Individual Level ◽  
The Individual ◽  
The Impact

School nurses are crucial to addressing adolescent mental health, yet evidence concerning their evolving role has not been synthesized to understand interventions across levels of practice (i.e., individual, community, systems). We conducted an integrative review of school nurse roles in mental health in the U.S. related to depressive symptoms, anxiety, and stress. Only 18 articles were identified, published from 1970 to 2019, and primarily described school nurses practicing interventions at the individual level, yet it was unclear whether they were always evidence-based. Although mental health concerns have increased over the years, the dearth of rigorous studies made it difficult to determine the impact of school nurse interventions on student mental health outcomes and school nurses continue to feel unprepared and under supported in this area. More research is needed to establish best practices and systems to support school nursing practice in addressing mental health at all levels of practice.

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