scholarly journals Development of the foregut in Katharina tunicata (Mollusca; Polyplacophora)

2021 ◽  
Author(s):  
Brandy S. Biggar
Keyword(s):  
Histological Study ◽  
Evolutionary Development ◽  
Future Research ◽  
Developmental Sequence ◽  
Gut Development ◽  
Larval Stages ◽  
First Time

AbstractAs a highly diverse phyla, Mollusca is both intriguing to study and difficult to define. No single common feature distinguishes the phyla, but the most common and recognizable is the radula. Throughout Molluscan history, there have been many developments to the radular structure. Evolutionary development of unique radular structures may have been made possible by developmental modularity. This histological study examines the development of polyplacophoran internal gut development. Here, I describe the developmental sequence of chiton feeding structures for the first time. Feeding structures are present by 10 days post hatch. Future research should examine larval stages prior to this in order to determine whether developmental modularity exists in polyplacophorans.

A Bibliometric Review on Outcome-Based Learning for Graduate Employability: Mapping the Research Front

2021 ◽  
pp. 002205742110164
Author(s):  
Mohammad Zahir Raihan ◽  
Md. Abul Kalam Azad
Keyword(s):  
Research Trend ◽  
Future Research ◽  
Research Front ◽  
Important Research ◽  
R Software ◽  
Future Research Agenda ◽  
Graduate Employability ◽  
Important Research Topic ◽  
Bibliometric Review ◽  
First Time

The outcome-based learning for graduate employability in higher education has been an important research topic among the policymakers, academicians, and researchers over the years. Yet, no bibliometric review on this topic has been published. This study, for the first time, examines bibliometric analysis on this topic examining current research trend and future research agenda. The bibliometrix package in R software and VOSviewer software are used for visualization and interpretation of results. A content analysis is performed to manually examine the bibliometric results.

scholarly journals Associations of Phoretic Mites on Bark Beetles of the Genus Ips in the Black Sea Mountains of Turkey

Forests ◽  
2021 ◽  
Vol 12 (5) ◽  
pp. 516
Author(s):  
Cihan Cilbircioğlu ◽  
Marta Kovač ◽  
Milan Pernek
Keyword(s):  
Black Sea ◽  
Bark Beetles ◽  
Pinus Nigra ◽  
Mite Species ◽  
Tree Bark ◽  
The Black Sea ◽  
Forest Pests ◽  
Larval Stages ◽  
Suitable Habitats ◽  
First Time

Phoretic mites use bark beetles for transportation to new, suitable habitats. Some phoretic mites act as predators and parasitoids of the bark beetles’ immature stages, especially egg and early larval stages, and are potential agents for the biological control of scolytine forest pests. Mites live very frequently in relationships with other invertebrates. Many are found in association with various species of bark beetles. Here, a total of 41 specimens of different bark beetles of the genus Ips (Ips acuminatus, Ips sexdentatus and Ips typographus) were studied for presence, species composition, and abundance of phoretic mites. The beetles were collected on dead wood and parts of tree bark of Pinus nigra, Pinus sylvestris and Picea abies in the Black Sea Mountains in Kastamonu and Artin Province of Turkey. A total of nine mite species were found, including Dendrolaelaps quadrisetus, Ereynetes sp., Histiostoma piceae, Paraleius cf. leontonychus, Pleuronectocelaeno barbara., Proctolaelaps hystricoides, Schizostethus simulatrix, Trichouropoda lamellosa and Uroobovellaipidis. All species are identified for the first time within Turkish fauna.

scholarly journals Exploring Secondary Metabolite Profiles of Stachybotrys spp. by LC-MS/MS

Toxins ◽  
2019 ◽  
Vol 11 (3) ◽  
pp. 133 ◽  
Author(s):  
Annika Jagels ◽  
Viktoria Lindemann ◽  
Sebastian Ulrich ◽  
Christoph Gottschalk ◽  
Benedikt Cramer ◽  
...  
Keyword(s):  
Secondary Metabolites ◽  
Future Research ◽  
Structural Modifications ◽  
Metabolite Profiles ◽  
The Individual ◽  
First Time ◽  
Analytical Standards ◽  
Respective Species

The genus Stachybotrys produces a broad diversity of secondary metabolites, including macrocyclic trichothecenes, atranones, and phenylspirodrimanes. Although the class of the phenylspirodrimanes is the major one and consists of a multitude of metabolites bearing various structural modifications, few investigations have been carried out. Thus, the presented study deals with the quantitative determination of several secondary metabolites produced by distinct Stachybotrys species for comparison of their metabolite profiles. For that purpose, 15 of the primarily produced secondary metabolites were isolated from fungal cultures and structurally characterized in order to be used as analytical standards for the development of an LC-MS/MS multimethod. The developed method was applied to the analysis of micro-scale extracts from 5 different Stachybotrys strains, which were cultured on different media. In that process, spontaneous dialdehyde/lactone isomerization was observed for some of the isolated secondary metabolites, and novel stachybotrychromenes were quantitatively investigated for the first time. The metabolite profiles of Stachybotrys species are considerably influenced by time of growth and substrate availability, as well as the individual biosynthetic potential of the respective species. Regarding the reported adverse effects associated with Stachybotrys growth in building environments, combinatory effects of the investigated secondary metabolites should be addressed and the role of the phenylspirodrimanes re-evaluated in future research.

scholarly journals Deservingness for "Family 500 +" Benefit in Poland: Qualitative Study of Internet Debates

2021 ◽  
Author(s):  
Piotr Michoń
Keyword(s):  
Future Research ◽  
Online Forums ◽  
Time Data ◽  
Social Surveys ◽  
Cash Benefit ◽  
Internet Forums ◽  
Welfare Attitudes ◽  
New Criterion ◽  
First Time ◽  
The Relationship

AbstractThe need for qualitative research of deservingness perception is strongly emphasised in the literature. This article studies the perception of deservingness for a "Family 500 +"—cash benefit in Poland. For the first time, data from online forums was used in the studies of deservingness and welfare attitudes. It allowed to avoid numerous limitations associated with social surveys. The qualitative analysis showed how participants of Internet debates perceive the criteria of deservingness: control, attitude, reciprocity, identity, need, and what are the relations between the criteria. The impurity of all deservingness criteria was indicated and a new criterion “adequacy” was proposed. Moreover due to the fact that the study concerned a concrete, non-abstract family cash benefit addressed the relationship between the perceived deservingness of children and their parents was pointed out. The vast majority of posts on Internet forums referred to deservingness of parents, not children. This is particularly evident in relation to the criteria of control and reciprocity. Presenting the hypothesis of jealousy and scapegoat strategy, the article also shows the direction of future research on deservingness.

Migrants in Medieval England, c. 500-c. 1500

2020 ◽  
Keyword(s):  
Art History ◽  
Historical Linguistics ◽  
Source Material ◽  
Modern World ◽  
Future Research ◽  
Medieval England ◽  
Medieval Studies ◽  
Wide Range ◽  
Different Types ◽  
First Time

This book is a ground-breaking study of the phenomenon of migration in and to England over the medieval millennium, between c. AD 500 and c. AD 1500. It reaches across traditional scholarly divides, both disciplinary and chronological, to investigate, for the first time, the different types of data and scholarly methods that reveal evidence of migration and mobility within the medieval kingdom of England. England offers the opportunity for studying migration and migrants over the longue durée, because it has been a recognisable political unit for over a millennium and because a wealth of source material has survived from these centuries. The data vary unevenly in quality and quantity across this period, but become considerably more powerful through multi-disciplinary approaches to data collection and interpretation. Fifteen subject specialists synthesise and extend recent research in a wide range of disciplines, including archaeology, art history, genetics, historical linguistics, history, literature and onomastics. They evaluate the capacity of different genres of evidence for addressing questions around migration and its effects on the identities of groups and individuals within medieval England, as well as methodological parameters and future research potential. The book therefore marks an important contribution to medieval studies, and to modern debates on migration and the free movement of people, arguing that migration in the modern world, and its reverberations, cannot be completely understood without taking a broad historical perspective on the topic.

Opportunities for improving how and when Canadians are informed about new prescription medications

2020 ◽  
pp. 427-447
Keyword(s):  
Lived Experiences ◽  
Mobile Application ◽  
Future Research ◽  
Prescription Medications ◽  
Structured Interviews ◽  
Risks And Benefits ◽  
Medication Information ◽  
First Time ◽  
To Receive ◽  
Larger Sample

The Canadian prescription process requires a person to go through several steps. Prescription medications have associated risks and benefits and it is important for people to be aware of these before and while they are taking medications. One of the approaches to informing people about new prescription medications is that they are provided Consumer Medication Information (CMI). CMI is given to Canadians at the pharmacy when they pick up prescriptions, they will be taking for the first time. This study used semi-structured interviews to examine the lived experiences of a sample of Canadians (N = 36) to identify opportunities for improvement in how and when they are informed about new prescription medications. The findings were synthesized into a journey map. Generally, participants wanted to receive CMI digitally and earlier in the prescription process. Adopting these changes could have several benefits which include loss prevention and increased accessibility to CMI as well as more participatory decision making and opportunities to ask questions. Future research is warranted to explore similar topics with a larger sample and determine what method (e.g., email, website, mobile application) would be most suitable.

scholarly journals Drivers’ Perceptions of Functionality Implied by Terms Used to Describe Automation in Vehicles

2018 ◽  
Vol 62 (1) ◽  
pp. 1893-1897 ◽  
Author(s):  
Michael A. Nees
Keyword(s):  
Future Research ◽  
Automated Vehicle ◽  
Human Driver ◽  
Trust In Automation ◽  
Vehicle Automation ◽  
First Time

The expectations induced by the labels used to describe vehicle automation are important to understand, because research has shown that expectations can affect trust in automation even before a person uses the system for the first time. An online sample of drivers rated the perceived division of driving responsibilities implied by common terms used to describe automation. Ratings of 13 terms were made on a scale from 1 (“human driver is entirely responsible”) to 7 (“vehicle is entirely responsible”) for three driving tasks (steering, accelerating/braking, and monitoring). In several instances, the functionality implied by automation terms did not match the technical definitions of the terms and/or the actual capabilities of the automated vehicle functions currently described by the terms. These exploratory findings may spur and guide future research on this under-examined topic.

scholarly journals Microfluidic-based imaging of complete C. elegans larval development

2021 ◽  
Author(s):  
Simon Berger ◽  
Silvan Spiri ◽  
Andrew deMello ◽  
Alex Hajnal
Keyword(s):  
Imaging Method ◽  
Cover Glass ◽  
Vulval Development ◽  
C Elegans ◽  
Larval Stages ◽  
Seam Cell ◽  
Time Observation ◽  
On Chip ◽  
First Time

Several microfluidic-based methods for long-term C. elegans imaging have been introduced in recent years, allowing real-time observation of previously inaccessible processes. The ex-isting methods either permit imaging across multiple larval stages without maintaining a stable worm orientation, or allow for very good immobilization but are only suitable for shorter experiments. Here, we present a novel microfluidic imaging method, which allows parallel live-imaging across multiple larval stages, while delivering excellent immobilization and maintaining worm orientation and identity over time. This is achieved by employing an array of microfluidic trap channels carefully tuned to maintain worms in a stable orienta-tion, while allowing growth and molting to occur. Immobilization is supported by an active hydraulic valve, which presses worms onto the cover glass during image acquisition, with the animals remaining free for most of an experiment. Excellent quality images can be ac-quired of multiple worms in parallel, with little impact of the imaging method on worm via-bility or developmental timing. The capabilities of this methodology are demonstrated by observing the hypodermal seam cell divisions and, for the first time, the entire process of vulval development from induction to the end of morphogenesis. Moreover, we demonstrate RNAi on-chip, which allows for perturbation of dynamic developmental processes, such as basement membrane breaching during anchor cell invasion.

scholarly journals Unpacking Associations between Mood Symptoms and Screen Time in Preadolescents: A Network Analysis

2020 ◽  
Author(s):  
Sin-Ying Lin ◽  
Nicholas R Eaton ◽  
Jessica L. Schleider
Keyword(s):  
Graphical Models ◽  
Behavioral Inhibition ◽  
Screen Time ◽  
Parental Monitoring ◽  
Future Research ◽  
Mood Symptoms ◽  
Symptom Profiles ◽  
Different Types ◽  
Symptom Level ◽  
First Time

Mounting evidence highlights the link between screen time and adolescent mood problems. However, there are several shortcomings to the extant literature: (1) this link is relatively underexplored in preadolescents, (2) most existing studies look at mood problems using categorical diagnoses rather than from a symptom-level perspective, despite the heterogeneity within mood disorders, (3) few studies have simultaneously examined the links of mood symptoms with different types of screen time, and (4) family/child-level factors that have shown links to youth psychopathology are not typically considered. This study, for the first time, examined the relationships of mood symptoms with different types of screen time, while accounting for theoretically important factors—parental monitoring and the behavioral inhibition/activation systems (BIS/BAS)—in preadolescents aged 9 to 10 from 9,986 families participating in the Adolescent Brain and Cognitive Development Study. Using mixed graphical models, we found that screen time involving age-inappropriate content was stably and significantly associated with various elevated mood symptoms, independent from other types of screen time, BIS/BAS, and parental monitoring. Additionally, age-inappropriate screen time was associated with increased overall symptom connectivity. Further, preadolescents engaged in high levels of age-inappropriate screen time reported different symptom profiles (i.e., differences in symptom centralities) from common pediatric mood problems. Our findings underline the multifaceted role (i.e., direct associations with symptoms, a moderator for symptom relationships, associations with distinct symptom profiles) of age-inappropriate screen time in preadolescent mood problems. These findings serve as foundations for future research that may facilitate early detection of preadolescents at risk of mood problems.

scholarly journals A Q Methodology Study of Supervisee Roles Within a Counseling Practicum Course

2021 ◽  
Vol 11 (1) ◽  
pp. 1-15
Author(s):  
Eric R. Baltrinic ◽  
Ryan M. Cook ◽  
Heather J. Fye
Keyword(s):  
Clinical Supervision ◽  
Q Methodology ◽  
Counseling Students ◽  
Future Research ◽  
First Semester ◽  
Practicum Students ◽  
Components Analysis ◽  
Counseling Practicum ◽  
First Time ◽  
Q Sort

Counseling students often experience clinical supervision for the first time during their participation in practicum courses. Counseling practicum supervisees new to supervision rely on their supervisors to provide direction and structure in supervision experiences to help them grow professionally and personally. Yet little is known about how students view their roles as new supervisees. Supervisors can benefit from structuring and delivering their courses informed by new supervisees’ perspectives on their roles. Accordingly, the authors conducted a Q methodology study with a purposeful sample of seven counseling practicum students, a doctoral co-instructor, and a counseling practicum instructor engaged in a first-semester counseling practicum course. Principal components analysis with varimax rotation of Q-sort data revealed three factors depicting supervisee roles (i.e., Dutiful, Discerning, and Expressive Learners). Implications for applying findings to improve supervision instruction and student learning are discussed, including limitations and future research suggestions.

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