排序方式: 共有35条查询结果,搜索用时 15 毫秒
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Andrew D. Redd Aleisha Collinson-Streng Craig Martens Stacy Ricklefs Caroline E. Mullis Jordyn Manucci Aaron A. R. Tobian Ethan J. Selig Oliver Laeyendecker Nelson Sewankambo Ronald H. Gray David Serwadda Maria J. Wawer Stephen F. Porcella Thomas C. Quinn 《Journal of clinical microbiology》2013,51(8):2805
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Aleisha McLachlan Kulbir Singh Michael McAlduff D. Gerrard Marangoni Samantha Shortall Shawn D. Wettig 《RSC advances》2020,10(6):3221
Micelle formation enthalpies (ΔmicH values) have been calorimetrically determined at 298 K for three sets of mixed zwitterionic/cationic gemini systems consisting of N-dodecyl-N,N-dimethyl-3-ammonio-1-propanesulfonate (ZW3-12) and a series of structurally related gemini surfactants, the N,N''-bis(dimethyldodecyl)-α,ω-alkanediammonium dibromide (12-s-12) systems. From the experimental and the estimated ideal micelle formation enthalpies, the excess enthalpies were obtained. The degrees of nonideality of the interaction in the mixed micelle (βm) from our previous work was used along with the excess enthalpy values to determine excess thermodynamic quantities of the surfactants in the mixed system according to Regular Solution Theory (RST) and Motomura''s theory. The excess enthalpies for the ZW3-12/12-4-12 were positive in magnitude and rose sharply when small amounts of the zwittergent were distributed into the gemini micelles. The excess enthalpies for the ZW3-12/12-5-12 and the ZW3-12/12-6-12 systems were also >0 kJ mol−1, and as a function of zwittergent composition, were quite different to those of the ZW3-12/12-4-12 mixed micelles. These results indicate that the heat of mixed micelle formation is strongly dependent on electrostatic interactions and the structure of the surfactants involved, specifically, the length of the tether group for the 12-s-12 gemini surfactants. From the calorimetric data and the application of RST and Motomura''s theory, we have obtained estimates of the excess Gibbs energy and entropy of mixing. An analysis of the three thermodynamic properties suggests that the relative contributions of enthalpic and entropic effects to nonideal behavior for mixed micelles involving gemini surfactants are strongly dependent on the gemini structure.Excess enthalpies of micelle formation for the ZW3-12/12-s-12 system as a function of the mole fraction of zwittergent (αZW3-12). 相似文献
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The present study examines the personal accounts of nine young adults who have parents living with mental illness. Adults' experience of personal loss due to their parents' mental illness and perceptions of their religious faith journey and spiritual struggles are described. Overall, young adults who reported experiencing more personal loss due to their parents' mental illness also reported feeling more confused on their faith journey, and reported experiencing more spiritual struggle relative to participants who reported experiencing less personal loss. Regardless of level of personal loss, all participants identified positive personal attributes that resulted from coping with their parents' illness, including a greater sense of independence, personal strength, and compassion. © 2010 Wiley Periodicals, Inc. 相似文献
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Vinh DC Garceau R Martinez G Wiebe D Burdz T Reimer A Bernard K 《Journal of clinical microbiology》2007,45(7):2321-2323
Legionella jordanis was first described in 1982 after isolation from environmental sources and is otherwise a very rare human pathogen. Here, we report the recovery of L. jordanis from a bronchoalveolar lavage specimen from a patient who presented with an indolent lower respiratory tract infection associated with constitutional symptoms. This case is the first culture-positive case of infection involving this species in Canada. 相似文献
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Gardnerella vaginalis bacteremia in a previously healthy man: case report and characterization of the isolate 下载免费PDF全文
Lagacé-Wiens PR Ng B Reimer A Burdz T Wiebe D Bernard K 《Journal of clinical microbiology》2008,46(2):804-806
Gardnerella vaginalis in women causes vaginitis or infections in other sites, such as the urinary tract, but is an infrequent cause of bacteremia. Bacteremia in men is very rare and is typically associated with immunocompromised states. Here we describe G. vaginalis bacteremia in a previously healthy man with renal calculi and urosepsis. 相似文献
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Scott D Langhorne A 《American Indian and Alaska native mental health research (Online)》2012,19(1):15-36
BeLieving In Native Girls (BLING) is a juvenile delinquency and HIV intervention at a residential boarding school for American Indian/Alaska Native adolescent girls ages 12-20 years. In 2010, 115 participants completed baseline surveys to identify risk and protective factors. Initial findings are discussed regarding a variety of topics, including demographics and general characteristics, academic engagement, home neighborhood characteristics and safety, experience with and perceptions of gang involvement, problem-solving skills, self-esteem, depression, sexual experiences and risk-taking behaviors, substance abuse, and dating violence. 相似文献
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Sjölund-Karlsson M Reimer A Folster JP Walker M Dahourou GA Batra DG Martin I Joyce K Parsons MB Boncy J Whichard JM Gilmour MW 《Emerging infectious diseases》2011,17(11):2151-2154
To increase understanding of drug-resistant Vibrio cholerae, we studied selected molecular mechanisms of antimicrobial drug resistance in the 2010 Haiti V. cholerae outbreak strain. Most resistance resulted from acquired genes located on an integrating conjugative element showing high homology to an integrating conjugative element identified in a V. cholerae isolate from India. 相似文献
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Rawlins BJ Kim YM Rozario AM Bazant E Rashidi T Bandazi SN Kachale F Sanghvi H Noh JW 《Midwifery》2013,29(1):53-59