181 research outputs found
Kinematic relationship between rotation of lumbar spine and hip joints during golf swing in professional golfers
Synthesis and Properties of Pyrrolidinium and Piperidinium Bis(trifluoromethanesulfonyl)imide Ionic Liquids with Allyl Substituents
New pyrrolidinium and piperidinium bis(trifluoromethanesulfonyl)imide (TFSI) ionic liquids (ILs) having
allyl substituents were synthesized and characterized. All of them are liquid at room temperature and stable up
to 300 oC. The pyrrolidinium-based ILs showed better conductivities and lower viscosities than the
corresponding piperidinium-based ILs. Among them, 1-allyl-1-methylpyrrolidinium TFSI showed the lowest
viscosity of 52 cP, the highest conductivity of 5.7 mS cmโ1, and the most negative cathodic voltage window of
โ3.2 V (vs. Fc/Fc+) on a platinum electrode, which are the improved results compared to the corresponding
analogue having a saturated substituent, 1-methyl-1-propylpyrrolidinium TFSI.This work was supported by the
Division of Advanced Batteries in NGE Program (Project
No. 10016439) and by KOSEF through the Research Center
for Energy Conversion and Storage. We also thank BK 21
Project funded by the Ministry of Education and Human
Resources Development of Korea
Incidentally Detected Inguinoscrotal Bladder Hernia
The bladder is involved in less than 4% of inguinal hernias. Inguinoscrotal bladder hernias are difficult to diagnose, and less than 7% are diagnosed preoperatively. Inguinoscrotal bladder hernias are usually asymptomatic. However, they can result in significant complications, such as bladder necrosis or acute renal failure. Accurate diagnosis is crucial to avoid bladder injury during surgery and other complications. Here we report the case of a 64-year-old man who presented with a scrotal mass. Ultrasonography of the scrotal mass showed a nonspecific cystic mass. During surgery, the mass was revealed to be a herniated bladder
Dairy Cattle, a Potential Reservoir of Human Campylobacteriosis: Epidemiological and Molecular Characterization of Campylobacter jejuni From Cattle Farms
Campylobacter jejuni is a major foodborne pathogen that is increasingly found worldwide and that is transmitted to humans through meat or dairy products. A detailed understanding of the prevalence and characteristics of C. jejuni in dairy cattle farms, which are likely to become sources of contamination, is imperative and is currently lacking. In this study, a total of 295 dairy cattle farm samples from 15 farms (24 visits) in Korea were collected. C. jejuni prevalence at the farm level was 60% (9/15) and at the animal level was 23.8% (68/266). Using the multivariable generalized estimating equation (GEE) model based on farm-environmental factors, we estimated that a high density of cattle and average environmental temperature (7 days prior to sampling) below 24ยฐC affects the presence and survival of C. jejuni in the farm environment. Cattle isolates, together with C. jejuni from other sources (chicken and human), were genetically characterized based on analysis of 10 virulence and survival genes. A total of 19 virulence profile types were identified, with type 01 carrying eight genes (all except hcp and virB11) being the most prevalent. The prevalence of virB11 and hcp was significantly higher in isolates from cattle than in those from other sources (p < 0.05). Multilocus sequence typing (MLST) of C. jejuni isolates from three different sources mainly clustered in the CC-21 and CC-48. Within the CC-21 and CC-48 clusters, cattle isolates shared an indistinguishable pattern with human isolates according to pulsed-field gel electrophoresis (PFGE) and flaA-restriction fragment length polymorphism (RFLP) typing. This suggests that CC-21 and CC-48 C. jejuni from dairy cattle are genetically related to clinical campylobacteriosis isolates. In conclusion, the farm environment influences the presence and survival of C. jejuni, which may play an important role in cycles of cattle re-infection, and dairy cattle represent potential reservoirs of human campylobacteriosis. Thus, environmental management practices could be implemented on cattle farms to reduce the shedding of C. jejuni from cattle, subsequently reducing the potential risk of the spread of cattle-derived C. jejuni to humans through the food chain
Correction to: Metagenomic analysis of isolation methods of a targeted microbe, Campylobacter jejuni, from chicken feces with high microbial contamination
Following publication of the original article [1], the authors reported an error in Fig.ย 2. The correct figure is shown below
Synthesis and Physicochemical Properties of Ionic Liquids: 1-Alkenyl-2,3-dimethylimidazolium Tetrafluoroborates
1-Alkenyl-2,3-dimethylimidazolium tetrafluoroborate ionic liquids having an olefinic substituent were
synthesized and characterized. Among them, [AMMIm]BF4 with an allyl group showed lower viscosity, higher
ionic conductivity, and a wider electrochemical window compared with its analogue having a saturated alkyl
substituent. An EDLC with [AMMIm]BF4 showed better performance than that with [PMMIm]BF4, too.This work was supported by the
Division of Advanced Batteries in NGE Program (Project
No. 10016439) and by KOSEF through the Research Center
for Energy Conversion and Storage. We also gratefully
acknowledge the financial support by the BK 21 Project
funded by the Ministry of Education and Human Resources
Development of Korea
Synthesis and Properties of Ionic Liquids:Imidazolium Tetrafluoroborates with Unsaturated Side Chains
Imidazolium tetrafluoroborate ionic liquids having unsaturated aliphatic side chains were synthesized and
characterized. Most of them are liquid at room temperature and all of them are stable up to 300 oC. Some
imidazolium tetrafluoroborates with an allylic side chain showed much wider voltage windows on the platinum
electrode, better conductivities, and lower viscosities compared with the corresponding ionic liquids containing
the saturated side chains.This work was supported by the
Division of Advanced Batteries in NGE Program (Project
No. 10016439) and by KOSEF through the Research Center
for Energy Conversion and Storage
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