Shipping to France We Offer Worldwide Shipping
Login Wishlist

8 alpha-Methacryloyloxy-13-ethoxyvernojalcanolide

$905

  • Catalogue Number :

Available on backorder

Quantity
Checkout Bulk Order?

Catalogue Number

Analysis Method

Specification

Storage

Molecular Weight

Appearance

Botanical Source

Structure Type

Category

SMILES

Synonyms

IUPAC Name

Applications

Density

Solubility

Flash Point

Boiling Point

Melting Point

InChl

InChl Key

WGK Germany

RID/ADR

HS Code Reference

Personal Projective Equipment

Correct Usage

Meta Tag

No Technical Documents Available For This Product.

PMID

29911966

Abstract

Introduction
Social media platforms are important channels through which health education about the utility and safety of vaccination is conducted.

Objective
To investigate if tweets with different sentiments toward vaccination and different contents attract different levels of Twitter users’ engagement (retweets).

Methods
A stratified random sample (N = 1425) of 142,891 #vaccine tweets (February 4, 2010, to November 10, 2016) was manually coded. All 201 tweets with 100 or more retweets from 194,259 #vaccineswork tweets (January 1, 2014, to April 30, 2015) were manually coded. Regression models were applied to identify factors associated with retweet frequency.

Results
Among #vaccine tweets, provaccine tweets (adjusted prevalence ratio = 1.5836, 95% confidence interval = 1.2130-2.0713, p < 0.001) and antivaccine tweets (adjusted prevalence ratio = 4.1280, 95% confidence interval = 3.1183-5.4901, p < 0.001) had more retweets than neutral tweets. No significant differences occurred in retweet frequency for content categories among antivaccine tweets. Among 411 links in provaccine tweets, Twitter (53; 12.9%), content curator Trap.it (14; 3.4%), and the Centers for Disease Control and Prevention (8; 1.9%) ranked as the top 3 domains. Among 325 links in antivaccine tweets, social media links were common: Twitter (44; 14.9%), YouTube (25; 8.4%), and Facebook (10; 3.4%). Among highly retweeted #vaccineswork tweets, the most common theme was childhood vaccinations (40%; 81/201); 21% mentioned global vaccination improvement/efforts (42/201); 29% mentioned vaccines can prevent outbreaks and deaths (58/201). Conclusion Engaging social media key opinion leaders to facilitate health education about vaccination in their tweets may allow reaching a wider audience online.

Title

Sentiment, Contents, and Retweets: A Study of Two Vaccine-Related Twitter Datasets

Author

Elizabeth B Blankenship, MPH Graduate Student in Epidemiology and Environmental Health Sciences at the Jiann-Ping Hsu College of Public Health at Georgia Southern University in Statesboro. E-mail: ude.nrehtuosaigroeg@36730be. Mary Elizabeth Goff, MPH Graduate Student in Epidemiology and Environmental Health Sciences at the Jiann-Ping Hsu College of Public Health at Georgia Southern University in Statesboro. E-mail: ude.nrehtuosaigroeg@78510ge. Jinging Yin, PhD Assistant Professor of Biostatistics at the Jiann-Ping Hsu College of Public Health at Georgia Southern University in Statesboro. E-mail: ude.nrehtuosaigroeg@niyj. Zion Tsz Ho Tse, PhD Associate Professor in the School of Electrical and Computer Engineering at the College of Engineering at the University of Georgia in Athens. E-mail: ude.agu@estnoiz. King-Wa Fu, PhD Associate Professor at the Journalism and Media Studies Centre at the University of Hong Kong and a Visiting Associate Professor at the Massachusetts Institute of Technology Media Lab in Cambridge. E-mail: kh.ukh@ufwk. Hai Liang, PhD Assistant Professor in the School of Journalism and Communication at the Chinese University of Hong Kong. E-mail: kh.ude.khuc@gnailiah. Nitin Saroha, MS Graduate Student in Computer Science at the University of Georgia in Athens. E-mail: ude.agu@01501sn. Isaac Chun-Hai Fung, PhD Assistant Professor in Epidemiology and Environmental Health Sciences at the Jiann-Ping Hsu College of Public Health at Georgia Southern University in Statesboro. E-mail: ude.nrehtuosaigroeg@gnufc.

Publish date

2018;

PMID

29242775

Abstract

Diseases caused by species of Calonectria (Ca.) represent a serious threat to the growth and sustainability of Eucalyptus plantations in China. Symptoms caused by these fungi mainly include leaf blight on trees in plantations and rotting of stems and leaves in nurseries. Extensive surveys have recently been conducted where Calonectria species were collected in Eucalyptus plantations and nurseries in the FuJian, GuangDong, GuangXi, and YunNan Provinces of South China. Additional isolates were baited from soil samples in the Hong Kong Region. The aim of this study was to identify the 115 Calonectria isolates obtained using comparisons of DNA sequence data for the β-tubulin (tub2), calmodulin (cmdA), histone H3 (his3) and partial translation elongation factor-1α (tef1) gene regions as well as their morphological features. Seven known species were identified, including Calonectria arbusta, Ca. asiatica, Ca. chinensis, Ca. eucalypti, Ca. hongkongensis, Ca. mossambicensis and Ca. pentaseptata. In addition, six novel taxa were collected and are described here as Ca. aciculata, Ca. honghensis, Ca. lantauensis, Ca. pseudoturangicola, Ca. pseudoyunnanensis, and Ca. yunnanensis spp. nov. Overall, the results reflect a high diversity of Calonectria species in China.

KEYWORDS

Cylindrocladium, forest pathogens, Nectriaceae, phylogeny, soil, systematics

Title

Calonectria species isolated from Eucalyptus plantations and nurseries in South China

Author

JieQiong Li, 1 , 2 Michael J. Wingfield, 2 QianLi Liu, 1 Irene Barnes, 3 Jolanda Roux, 4 Lorenzo Lombard, 5 Pedro W. Crous, 2 , 5 and ShuaiFei Chen 1 , 2

Publish date

2017 Dec;