scholarly journals Macroalgal Defense against Competitors and Herbivores

2021 ◽  
Vol 22 (15) ◽  
pp. 7865
Author(s):  
Gracjana Budzałek ◽  
Sylwia Śliwińska-Wilczewska ◽  
Kinga Wiśniewska ◽  
Agnieszka Wochna ◽  
Iwona Bubak ◽  
...  
Keyword(s):  
United States ◽  
Current Knowledge ◽  
The United States ◽  
Future Research ◽  
Aquatic Animal ◽  
Research Directions ◽  
Future Research Directions ◽  
Allelopathic Effects ◽  
Careful Investigation ◽  
Allelopathic Compounds

Macroalgae are the source of many harmful allelopathic compounds, which are synthesized as a defense strategy against competitors and herbivores. Therefore, it can be predicted that certain species reduce aquaculture performance. Herein, the allelopathic ability of 123 different taxa of green, red, and brown algae have been summarized based on literature reports. Research on macroalgae and their allelopathic effects on other animal organisms was conducted primarily in Australia, Mexico, and the United States. Nevertheless, there are also several scientific reports in this field from South America and Asia; the study areas in the latter continents coincide with areas where aquaculture is highly developed and widely practiced. Therefore, the allelopathic activity of macroalgae on coexisting animals is an issue that is worth careful investigation. In this work, we characterize the distribution of allelopathic macroalgae and compare them with aquaculture locations, describe the methods for the study of macroalgal allelopathy, present the taxonomic position of allelopathic macroalgae and their impact on coexisting aquatic competitors (Cnidaria) and herbivores (Annelida, Echinodermata, Arthropoda, Mollusca, and Chordata), and compile information on allelopathic compounds produced by different macroalgae species. This work gathers the current knowledge on the phenomenon of macroalgal allelopathy and their allelochemicals affecting aquatic animal (competitors and predators) worldwide and it provides future research directions for this topic.

Online Child Pornography

2012 ◽  
pp. 847-854
Author(s):  
Catherine D. Marcum ◽  
George E. Higgins
Keyword(s):  
United States ◽  
Child Pornography ◽  
The United States ◽  
Future Research ◽  
Empirical Knowledge ◽  
Research Directions ◽  
Legislative History ◽  
The Past ◽  
The Future ◽  
Future Research Directions

This entry provides an examination of the past and present prevalence and issues surrounding online child pornography in the United States. Legal definitions of child pornography are explained, followed by an analysis of the current empirical knowledge on the topic, as well as the legal and legislative history. Finally, a brief discussion of the future research directions on the topic will be discussed.

Job Apathy

2015 ◽  
Vol 25 (3) ◽  
pp. 484-501 ◽  
Author(s):  
Gordon B. Schmidt ◽  
Guihyun Park ◽  
Jessica Keeney ◽  
Sonia Ghumman
Keyword(s):  
Employee Engagement ◽  
The United States ◽  
Two Dimensions ◽  
Popular Media ◽  
Incremental Validity ◽  
Future Research ◽  
Research Directions ◽  
Personal Initiative ◽  
Future Research Directions ◽  
Practical Implications

Work anecdotes and popular media programs such as Office Space, The Office, and Dilbert suggest that there are a number of workers in the United States who feel a sense of apathy toward their workplace and their job. This article develops these ideas theoretically and provides validity evidence for a scale of job apathy across two studies. Job apathy is defined as a type of selective apathy characterized by diminished motivation and affect toward one’s job. A scale of job apathy was developed and data from a sample of currently or recently employed college students supported two dimensions: apathetic action and apathetic thought. Job apathy was found to be empirically distinct from clinical apathy, negative affectivity, cynicism, and employee engagement. Job apathy was also found to have incremental validity in the prediction of personal initiative, withdrawal, and organizational deviance. Practical implications and future research directions for job apathy are discussed.

scholarly journals Emerging role of a novel small non-coding regulatory RNA: tRNA-derived small RNA

ExRNA ◽  
2019 ◽  
Vol 1 (1) ◽  
Author(s):  
Fangfang Jin ◽  
Zhigang Guo
Keyword(s):  
Small Rna ◽  
Current Knowledge ◽  
Future Research ◽  
Regulatory Rna ◽  
Biological Functions ◽  
Research Directions ◽  
Non Coding Rna ◽  
Future Research Directions ◽  
Non Coding Rnas

Abstract The discovery of small non-coding RNAs, such as miRNA and piRNA, has dramatically changed our understanding of the role RNA plays in organisms. Recent studies show that a novel small non-coding RNA generated from cleavage of tRNA or pre-tRNA, called tRNA-derived small RNA (tsRNA), serves as a new regulator of gene expression. tsRNA has been determined participate in regulating some specific physiological and pathological processes. Although knowledge regarding the biological roles of miRNA and piRNA is expanding, whether tsRNAs play similar roles remains poorly understood. Here, we review the current knowledge regarding the mechanisms of action and biological functions of tsRNAs in intracellular, extracellular and intergenerational inheritance, and highlight the potential application of tsRNAs in human diseases, and present the current problems and future research directions.

scholarly journals Melatonin in plants: what we know and what we don’t

2021 ◽  
Vol 5 ◽  
Author(s):  
Zixin Zhang ◽  
Yang Zhang
Keyword(s):  
Abiotic Stresses ◽  
Growth And Development ◽  
Current Knowledge ◽  
Future Research ◽  
Signal Transduction Pathways ◽  
Biotic And Abiotic Stresses ◽  
Research Directions ◽  
Genetic Characteristics ◽  
Future Research Directions ◽  
Biosynthesis Regulation

Abstract Melatonin is an endogenous micromolecular compound of indoleamine with multiple physiological functions in various organisms. In plants, melatonin is involved in growth and development, as well as in responses to biotic and abiotic stresses. Furthermore, melatonin functions in phytohormone-mediated signal transduction pathways. There are multiple melatonin biosynthesis pathways, and the melatonin content in plants is greatly affected by intrinsic genetic characteristics and external environmental factors. Although melatonin biosynthesis has been extensively studied in model plants, it remains uncharacterized in most plants. This article focuses on current knowledge on the biosynthesis, regulation and application of melatonin, particularly for fruit quality and preservation. In addition, it highlights the links between melatonin and other hormones, as well as future research directions.

Machine Learning Techniques to Identify and Characterize Sleep Disorders Using Biosignals

2021 ◽  
pp. 136-160
Author(s):  
Mercedes Barrachina ◽  
Laura Valenzuela López
Keyword(s):  
Machine Learning ◽  
Sleep Disorders ◽  
Adult Population ◽  
The United States ◽  
Machine Learning Techniques ◽  
Future Research ◽  
Research Directions ◽  
Learning Techniques ◽  
Control And Prevention ◽  
Future Research Directions

Sleep disorders are related to many different diseases, and they could have a significant impact in patients' health, causing an economic impact to the society and to the national health systems. In the United States, according to information from the Center for Disease Control and Prevention, those disorders are affecting 50-70 million in the adult population. Sleep disorders are causing annually around 40,000 deaths due to cardiovascular problems, and they cost the health system more than 16 billion. In other countries, such as in Spain, those disorders affect up to 48% of the adult population. The main objective of this chapter is to review and evaluate the different machine learning techniques utilized by researchers and medical professionals to identify, assess, and characterize sleep disorders. Moreover, some future research directions are proposed considering the evaluated area.

Digitizing Healthcare

2010 ◽  
pp. 31-41
Author(s):  
Yasin Ozcelik ◽  
Claire H. Carter ◽  
Maryann Clark ◽  
Alejandro Martinez
Keyword(s):  
The United States ◽  
Medication Administration ◽  
Future Research ◽  
Healthcare Industry ◽  
Future Trends ◽  
Research Directions ◽  
Adoption And Implementation ◽  
The World ◽  
Future Research Directions ◽  
Promote Patient Safety

Proliferation of the Internet and Information Technology (IT) has led to many innovations in the healthcare industry. Among such innovations are the Electronic Medication Administration Record (eMAR) and the Bedside Medication Verification (BMV), both of which have been widely implemented by hospitals around the world. In this regard, the goal of this chapter is three-fold. It first describes the underlying work-flow utilized in these systems by comparing it with traditional methods of medication administration. Then it investigates the adoption and implementation of eMAR and BMV in hospitals in the United States, the conversion from traditional medication administration to eMAR documentation, and how utilization of eMAR and BMV can promote patient safety. The chapter concludes with the exploration of future trends in medication administration through the utilization of eMAR and BMV, and highlights future research directions in the field.

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