Exploring Korean adolescent stress on social media: a semantic network analysis.

Background: Considering that adolescents spend considerable time on the Internet and social media and experience high levels of stress, it is difficult to find a study that investigates adolescent stress through a big data-based network analysis of social media. Hence, this study was designed to provide basic data to establish desirable stress coping strategies for adolescents based on a big data-based network analysis of social media for Korean adolescent stress. The purpose of this study was to (1) identify social media words that express stress in adolescents and (2) investigate the associations between those words and their types.

CRISPR/Cas9-Mediated Mutagenesis of Delays the Bolting Time in Chinese Cabbage ( L. ssp. ).

Chinese cabbage has unintended bolting in early spring due to sudden climate change. In this study, late-bolting Chinese cabbage lines were developed via mutagenesis of the () gene, a transcription factor that determines floral identity, using the clustered regularly interspaced short palindromic repeat (CRISPR)/CRISPR-associated protein 9 (CRISPR/Cas9) system. Double-strand break of the target region via gene editing based on nonhomologous end joining (NHEJ) was applied to acquire useful traits in plants.

CRISPR/Cas9-Mediated Editing of Genes Results in a Late-Bolting Phenotype in Chinese Cabbage ( ssp. ).

Due to the sudden change in temperature in spring, Chinese cabbage, a leafy vegetable cultivated for consumption, loses its commercial value due to the onset of bolting—the phenomenon of switching from vegetative to reproductive growth. In this study, we applied clustered regularly interspaced short palindromic repeats/(CRISPR)-associated system 9 (CRISPR/Cas9) technology to analyze AGAMOUS-like genes. We performed functional analysis of AGL19 and AGL24 genes related to bolting and flowering using CRISPR/Cas9-mediated Chinese cabbage transformation.

Network analysis based on big data in social media of Korean adolescents' diet behaviors.

Adolescents are increasingly interested in weight control; hence, proper health education is important for helping them control their weight properly. This study was designed to pick out social media words that express adolescents' diet behaviors, and identify the associations and types between such words and the behaviors. It used text-mining techniques and semantic network analysis for related big data collected from the Internet on adolescents' diet behaviors.

Identification and Characterization of , a -like MITE Activated in Transgenic Chinese Cabbage Lines.

Transposable elements (TEs) are DNA fragments that can be replicated or transposed within a genome. TEs make up a high proportion of the plant genome and contribute to genetic diversity and evolution, affecting genome structure or gene activity. Miniature inverted-repeat transposable elements (MITEs) are short, non-autonomous class II DNA transposable elements.

Effects of App-Based Mobile Interventions for Dementia Family Caregivers: A Systematic Review and Meta-Analysis.

Background: Dementia was caregivers experience tremendous difficulties both physically and psychologically, leading to high levels of depression and caregiver burden. The advantage of mobile interventions has been recognized due to its freedom from time and space restrictions.

Objectives: A systematic review and meta-analysis was conducted to evaluate effectiveness of app-based mobile interventions for dementia caregivers.

Function Analysis of the / Gene Related to Self-Incompatibility in Chinese Cabbage Using CRISPR/Cas9.

Chinese cabbage, a major crop in Korea, shows self-incompatibility (SI). SI is controlled by the type 2A serine/threonine protein phosphatases (PP2As). The gene is controlled by regulatory subunits that comprise a 36 kDa catalyst C subunit, a 65 kDa regulatory A subunit, and a variety of regulatory B subunits (50-70 kDa).

DNA Methylation Level Changes in Transgenic Chinese Cabbage ( ssp. ) Plants and Their Effects on Corresponding Gene Expression Patterns.

Plant tissue culture is an in vitro technique used to manipulate cells, tissues, or organs, and plays an important role in genetic transformation. However, plants cultured in vitro often exhibit unintended genetic and epigenetic variations. Since it is important to secure the stability of endogenous and exogenous gene expressions in transgenic plants, it is preferable to avoid the occurrence of such variations.

Identification and Validation of Genetic Variations in Transgenic Chinese Cabbage Plants ( ssp. ) by Next-Generation Sequencing.

Transgenic plants are usually produced through tissue culture, which is an essential step in -mediated plant transformation. However, genomic variations, termed somaclonal variations, have been detected in transgenic plants cultured in vitro. The occurrence of these variations should be as low as possible to secure the stability of transgenic crops.

Mobile phone interventions to improve adolescents' physical health: A systematic review and meta-analysis.

Background: We conducted a systematic review and meta-analysis to evaluate the effectiveness of mobile phone intervention in promoting a healthy lifestyle among adolescents.

Methods: Six databases were used for literature searches: MEDLINE, Embase, Cochrane Library, Cumulative Index to Nursing and Allied Health Literature, KoreaMed, and Research Information Sharing Service. The keywords used were "adolescents," "mobile phone," "smartphone," "mHealth," "application," and "text message.

[Effects of Self-directed Feedback Practice using Smartphone Videos on Basic Nursing Skills, Confidence in Performance and Learning Satisfaction].

Purpose: This study was done to verify effects of a self-directed feedback practice using smartphone videos on nursing students' basic nursing skills, confidence in performance and learning satisfaction.

Methods: In this study an experimental study with a post-test only control group design was used. Twenty-nine students were assigned to the experimental group and 29 to the control group.

[Impact of Bowel Function, Anxiety and Depression on Quality of Life in Patients with Sphincter-preserving Resection for Rectal Cancer].

Purpose: This study was a descriptive survey research to identify the impact of bowel function, anxiety and depression on quality of life in patients with rectal cancer who had a sphincter-preserving resection.

Methods: Participants were 100 patients who had rectal cancer surgery at W hospital in Korea. Bowel function, anxiety & depression, and quality of life were measured using the BFI (Bowel Function Instrument), HADS (Hospital Anxiety-Depression Scale) and the FACT-C (Functional Assessment of Cancer Therapy-Colorectal).

Health behaviors and related demographic factors among Korean adolescents.

Purpose: The purposes of this study were to explore health behaviors, examine health behaviors in relation to demographic factors, and investigate the relationships between health risk behaviors (e.g., tobacco use, alcohol consumption, and sexual experience) among Korean adolescents.

[Development and psychometric evaluation of a scale to measure health behaviors of adolescents].

Purpose: The purpose was to develop a preliminary scale to measure Korean adolescents' health behaviors through a qualitative approach, to evaluate the scale psychometrically, and to develop a final scale.

Methods: Participants were 61 adolescents for qualitative interviews and 1,687 adolescents for the psychometric evaluation. Procedure included content analysis of interviews to identify health behavior categories for Korean adolescents, pre-test to confirm that preliminary scale items were understandable, content validity by an expert panel, development of the web-based computer-assisted survey (CAS), and psychometric analysis to determine reliability and validity of the final scale.

A mentoring program for the promotion of sexual health among Korean adolescents.

The purpose of this pilot study was to develop a mentoring program for the promotion of sexual health among Korean adolescents and to explore the effects of the program. A nonequivalent control group pre-test-post-test design was used. The mentoring intervention was conducted by eight nursing students who participated in the program as mentors using various methods such as formal group sessions and informal individual contacts.

[Development of a mentoring program to improve exercise and dietary habits of adolescents].

Purpose: The purpose of this study was to evaluate the effects of a mentoring program to improve the exercise and dietary habits of adolescents.

Methods: A non-equivalent control group, pretest-posttest design was used. The independent variable was a mentoring program for improvement of exercise and dietary habits of adolescents, in which the mentors were nursing students and the mentees were female middle school students.

A tailored program for the promotion of physical exercise among Korean adults with chronic diseases.

This study evaluated the effect of a tailored stage-matched intervention designed to increase exercise among Korean adults with chronic diseases. A physician and a nurse collaborated to deliver the intervention to 21 patients; the control group (CG) consisted of 20 patients. A nonequivalent CG pretest-posttest design was used.

[The effects of a sex education program on knowledge related to sexually transmitted diseases and sexual autonomy among university students].

Purpose: The purpose of this study was to evaluate the effects of a sex education program, which was based on the Health Belief Model, on knowledge related to sexually transmitted diseases and sexual autonomy among university students.

Method: A non-equivalent control group, pretest-posttest design was used. The four session program was delivered to 18 students during 4 weeks; the control group consisted of 23 students.

Exercise self-efficacy, exercise benefits and barriers, and commitment to a plan for exercise among Korean women with osteoporosis and osteoarthritis.

This study compared perceived exercise self-efficacy, exercise benefits, exercise barriers, and commitment to a plan for exercise between Korean women with a diagnosis of either osteoporosis or osteoarthritis. The influence of exercise self-efficacy, exercise benefits and barriers on commitment to a plan for exercise was also assessed in each group. Participants in the study were 154 Korean women over 40 years of age who were recruited from hospitals, health centers or a nursing home.

[Content analysis of the experience of preceptors in clinical education for senior student nurses].

Purpose: The purpose of this study was to identify experiences of nurses who served as preceptors in clinical education for senior student nurses in a college of medicine in Wonju city.

Method: Data was collected from 20 preceptors instructing senior student nurses in 2001 using a self-completion questionnaire. To analyze data, content analysis was done using an analysis scheme developed by the investigators.

Using methodological triangulation for cultural verification of commitment to a plan for exercise scale among Korean adults with chronic diseases.

The purpose of this study was twofold: to use methodological triangulation to increase the cultural appropriateness of the Planning for Exercise Scale (Pender, 1996), which measures commitment to a plan of action, and to psychometrically evaluate the revised scale in a selected population of 230 Korean adults experiencing chronic diseases. First, through a qualitative approach, the cultural properties of the concept were identified in order to revise Pender's Planning for Exercise Scale. The revised scale consisted of 20 items: 13 items emerged from the qualitative procedure and seven items were retained from the original scale.