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Academic literature on the topic 'SONPV'

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Published: 6 September 2023

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Journal articles on the topic "SONPV"

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Li, Hui, Joseph S. Francisco, and Xiao Cheng Zeng. "Unraveling the mechanism of selective ion transport in hydrophobic subnanometer channels." Proceedings of the National Academy of Sciences 112, no. 35 (August 17, 2015): 10851–56. http://dx.doi.org/10.1073/pnas.1513718112.

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Recently reported synthetic organic nanopore (SONP) can mimic a key feature of natural ion channels, i.e., selective ion transport. However, the physical mechanism underlying the K+/Na+ selectivity for the SONPs is dramatically different from that of natural ion channels. To achieve a better understanding of the selective ion transport in hydrophobic subnanometer channels in general and SONPs in particular, we perform a series of ab initio molecular dynamics simulations to investigate the diffusivity of aqua Na+ and K+ ions in two prototype hydrophobic nanochannels: (i) an SONP with radius of 3.2 Å, and (ii) single-walled carbon nanotubes (CNTs) with radii of 3–5 Å (these radii are comparable to those of the biological potassium K+ channels). We find that the hydration shell of aqua Na+ ion is smaller than that of aqua K+ ion but notably more structured and less yielding. The aqua ions do not lower the diffusivity of water molecules in CNTs, but in SONP the diffusivity of aqua ions (Na+ in particular) is strongly suppressed due to the rugged inner surface. Moreover, the aqua Na+ ion requires higher formation energy than aqua K+ ion in the hydrophobic nanochannels. As such, we find that the ion (K+ vs. Na+) selectivity of the (8, 8) CNT is ∼20× higher than that of SONP. Hence, the (8, 8) CNT is likely the most efficient artificial K+ channel due in part to its special interior environment in which Na+ can be fully solvated, whereas K+ cannot. This work provides deeper insights into the physical chemistry behind selective ion transport in nanochannels.
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2

Lou, Lily. "SONPM Update – Raising our Voices." Neonatology Today 16, no. 1 (January 19, 2021): 17–18. http://dx.doi.org/10.51362/neonatology.today/20211611718.

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Ooi, Catriona, Basil Donovan, and David A. Lewis. "Cross-sectional study of sexual behaviour and health of gay and bisexual men in suburban Sydney, New South Wales, Australia: contrasts between sex venue and clinic attendees." Sexual Health 18, no. 3 (2021): 248. http://dx.doi.org/10.1071/sh20196.

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Abstract Background In Australia, men-who-have-sex-with-men (MSM) have higher rates of sexually transmissible infections (STIs) and HIV compared with heterosexual men. We compared demographics, behaviour and HIV/STI prevalence for MSM attending a sex-on-premises-venue (SOPV) or the local sexual health clinic (SHC) to determine key differences. Methods: Men attending a SOPV during onsite HIV/STI screening from November 2015 for 12 months were compared with MSM attending a local SHC for screening. Each group completed a self-administered questionnaire and STI/HIV testing. Data analysis was performed using SPSS. Results: Compared with SHC participants (n = 108), SOPV participants (n = 84) had a higher median age (47 years [range, 22–88] vs 33 years [range, 19–71]; P < 0.001) and less likely to report previous HIV testing (73% vs 89%; P < 0.01), STI testing (60% vs 90%; P < 0.001) or be vaccinated for hepatitis A (32% vs 65%; P < 0.001) or hepatitis B (35% vs 73%; P < 0.001). SOPV participants were more likely to be married, widowed or have a long-term female partner (39% vs 7%; P < 0.001) and have a higher prevalence of urethral and rectal chlamydia (7% vs 1%; P = 0.02 and 8% vs 2%; P = 0.03, respectively). There was no significant difference between the groups for detection of syphilis (4% vs 9%), gonorrhoea (5% vs 9%) or HIV (1% vs 0%). Conclusion: MSM attending the SOPV had higher anogenital chlamydial prevalence compared with those attending the SHC. They reported higher rates of sex with female partners, which may facilitate STI/HIV transmission to heterosexual populations. Our findings have implications for HIV/STI service provision, contact tracing and local health promotion initiatives.
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Stevens, Brett, Joseph Debattista, and William Rutkin. "Use of incentives to encourage sexually transmissible infection testing amongst sex-on-premises venue patrons." Sexual Health 10, no. 2 (2013): 156. http://dx.doi.org/10.1071/sh12132.

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Background Incentives have been explored as a strategy for increasing access to sexually transmissible infection (STI) testing. This project sought to trial the offer of free entry to sex-on-premises venues (SOPVs) for venue patrons as an incentive to access sexual health checks. Method: SOPV patrons were offered free entry into venues if they took advantage of sexual health testing at a range of clinics. Patrons were given testing cards from the SOPV that could be exchanged at the time of the clinical consultation for a free entry pass to the SOPV of their choice. Cards collected at clinics and SOPVs were collated. Results: In total, 244 cards were distributed to patrons from four venues over a 6-month period. Ten persons accessed one of the six clinical sites, one person attending twice. Of these persons, five attended two general practices and the remaining five accessed public sexual health clinics. Of these 10 persons, three used their free entry passes to attend an SOPV. Two persons accessed these clinical sites for the first time, one of whom tested reactive for an STI. Another regular attendee also tested reactive. Conclusion: Despite the low uptake, the free entry promotion was inexpensive and could, given sufficient time, be considered an effective incentive. Nonetheless, this study may have contributed to at least two new persons undertaking testing, one of whom was diagnosed with an STI.
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Mullens, Amy B., Shaun Staunton, Joseph Debattista, Elisabeth Hamernik, and Darren Gill. "Sex on premises venue (SOPV) health promotion project in response to sustained increases in HIV notifications." Sexual Health 6, no. 1 (2009): 41. http://dx.doi.org/10.1071/sh07087.

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Background: Due to increases in HIV notifications in Queensland, a health promotion outreach project was developed with sex on premises venues (SOPV) in Brisbane. Methods: A health promotion officer (HPO) promoted safer sex behaviours among SOPV patrons over 14 months, including providing information, counselling and skills to enhance safer sexual behaviours and providing referrals. Surveys were introduced to facilitate discussions regarding HIV/sexually transmissible infections, testing and safer sex practices. Results: The project demonstrated feasibility within this highly sexualised environment, and was enhanced by careful monitoring and revising the procedure to improve patron/staff responses to the project. The introduction of a survey instrument was a significant contributor to the project’s effectiveness, providing opportunities for patrons to discuss a variety of key sexual health issues. Conclusions: This initiative reflected effective partnering between the Health Department, a community HIV/lesbian, gay, bisexual and transgender organisation and private industry. Despite initial difficulties, the presence of a health worker within an SOPV was acceptable to patrons and allowed for brief interventions to be conducted. This project was deemed effective for a limited time period and within certain constraints.
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Lankowski, Alexander, Hugo Sanchez, Jose Hidalgo, Robinson Cabello, and Ann Duerr. "1253. Sex-on-Premise Venue (SOPV) Attendance Among Men Who Have Sex with Men (MSM) in Lima, Perú: Results From a Cross-Sectional Web-Based Survey." Open Forum Infectious Diseases 6, Supplement_2 (October 2019): S450—S451. http://dx.doi.org/10.1093/ofid/ofz360.1116.

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Abstract Background In Perú, where the HIV epidemic is concentrated among men who have sex with men (MSM), incidence has not changed appreciably over the last decade despite the rapid scale-up of free antiretroviral treatment (ART). New strategies for delivering effective HIV testing and prevention services to at-risk populations are greatly needed. Because most adult MSM in Perú live at home with family where it may be difficult to bring new sex partners, sex-on-premise venues (SOPVs)—such as saunas, sex clubs, and hourly hotels—might represent opportune sites at which to offer targeted HIV testing and prevention interventions. Methods From November 26, 2018 through April 15, 2019 we conducted a cross-sectional web-based survey using REDCap to assess the prevalence of SOPV attendance and associated sexual risk behaviors among MSM in Lima, Perú. SOPVs were defined as saunas, sex clubs, adult movie theaters, hotels, or bars/discos known to permit sex. We recruited participants by disseminating an anonymous survey link through local gay social media networks, with no monetary incentive to complete the survey. We asked participants how/where they met any sex partners from the prior 3 months, where they went for sex, and about HIV-associated sexual risk factors, including self-reported HIV status. We used the Pearson chi-squared test and Student’s t-test to assess whether the frequency of sexual risk behaviors differed based on SOPV attendance. Results Among n = 324 cis-gender MSM completing the survey, 16% identified as bisexual. Median age was 30 years, 62% lived at home with family, 50% had a university education or higher, and 29% reported being HIV+. 65% of respondents reported attending an SOPV to meet a partner and/or have sex in the prior 3 months. SOPV attendees were significantly more likely to report transactional sex, group sex, sex under the influence of alcohol, popper use, and have a higher number of sex partners (table). Conclusion SOPV attendance is common among MSM in Lima and associated with higher levels of several sexual behavioral risk factors. In light of this, SOPVs warrant further consideration as potential sites of outreach to offer HIV testing and prevention interventions designed to reach MSM at high risk for HIV infection. Disclosures All authors: No reported disclosures.
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El-Sobky, B., G. Ashry, and Y. Abo-Elnaga. "An active-set with barrier method and trust-region mechanism to solve a nonlinear Bilevel programming problem." AIMS Mathematics 7, no. 9 (2022): 16112–46. http://dx.doi.org/10.3934/math.2022882.

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<abstract><p>Nonlinear Bilevel programming (NBLP) problem is a hard problem and very difficult to be resolved by using the classical method. In this paper, Karush-Kuhn-Tucker (KKT) condition is used with Fischer-Burmeister function to convert NBLP problem to an equivalent smooth single objective nonlinear programming (SONP) problem. An active-set strategy is used with Barrier method and trust-region technique to solve the smooth SONP problem effectively and guarantee a convergence to optimal solution from any starting point. A global convergence theory for the active-set barrier trust-region (ACBTR) algorithm is studied under five standard assumptions. An applications to mathematical programs are introduced to clarify the effectiveness of ACBTR algorithm. The results show that ACBTR algorithm is stable and capable of generating approximal optimal solution to the NBLP problem.</p></abstract>
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El-Sobky, B., and G. Ashry. "An interior-point trust-region algorithm to solve a nonlinear bilevel programming problem." AIMS Mathematics 7, no. 4 (2022): 5534–62. http://dx.doi.org/10.3934/math.2022307.

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<abstract><p>In this paper, a nonlinear bilevel programming (NBLP) problem is transformed into an equivalent smooth single objective nonlinear programming (SONP) problem utilized slack variable with a Karush-Kuhn-Tucker (KKT) condition. To solve the equivalent smooth SONP problem effectively, an interior-point Newton's method with Das scaling matrix is used. This method is locally method and to guarantee convergence from any starting point, a trust-region strategy is used. The proposed algorithm is proved to be stable and capable of generating approximal optimal solution to the nonlinear bilevel programming problem.</p> <p>A global convergence theory of the proposed algorithm is introduced and applications to mathematical programs with equilibrium constraints are given to clarify the effectiveness of the proposed approach.</p></abstract>
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9

Ooi, Catriona, Fabian Y. S. Kong, David A. Lewis, and Jane S. Hocking. "Prevalence of sexually transmissible infections and HIV in men attending sex-on-premises venues in Australia: a systematic review and meta-analysis of observational studies." Sexual Health 17, no. 2 (2020): 135. http://dx.doi.org/10.1071/sh19150.

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Background In Australia, men who have sex with men (MSM) have high rates sexually transmissible infections (STIs) and sex-on-premises venue (SOPV) patrons are at risk. This paper assesses Neisseria gonorrhoeae (NG), Chlamydia trachomatis (CT), syphilis and HIV prevalence in men tested at Australian SOPVs and describes testing services. Methods: EMBASE, Medline, PubMed and international conference proceedings were searched for articles reporting on-site SOPV testing between 1 January 2000 and 31 January 2017. Meta-analysis calculated pooled prevalence estimates of STIs by anatomical site. Results: Twelve cross-sectional studies were identified. Most (8/12) were local sexual health clinics (SHC) outreach services. Participants’ mean age was 41.1 years (95% confidence interval (CI) 37.0–43.3; range 17 to 84 years). Testing included CT and NG (9/12), HIV (8/12) and syphilis (5/12). CT and NG prevalence overall summary estimates were 3.4% (95% CI 1.9–5.2%, I2 = 88.7%, P &lt; 0.01) and 1.3% (95% CI 0.7–2.2%, I2 = 75.5%, P &lt; 0.01) respectively. CT and NG prevalence was highest in the ano-rectum and oro-pharynx respectively. The HIV and syphilis pooled estimates were 2.3% (95% CI 1.6–2.9%, I2 = 93.1%, P &lt; 0.01) and 3.2% (95% CI 1.8–4.6%, I2 = 72.8%, P &lt; 0.01) respectively. Participation rate varied. Conclusion: This review examines HIV and STI testing in Australian SOPVs before HIV pre-exposure prophylaxis (PrEP). Findings indicate a high prevalence of STIs. PrEP use and resultant condomless sex may influence STI prevalence. Further research is required to determine the effect of PrEP on the STI prevalence among SOPV patrons.
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Urban, Olga Andreevna, and Oksana Vladimirovna Bezrukova. "Conceptual Foundations for the Study of Social Capital of Socially Oriented Non-profit Organizations." Теория и практика общественного развития, no. 12 (December 4, 2020): 14–18. http://dx.doi.org/10.24158/tipor.2020.12.1.

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The activities of socially oriented non-profit organi-zations (further – SONPO) at the state level is con-sidered as an important area of development of the social sphere. The substantiation of the conceptual foundations of the study and measurement of the social capital of socially oriented non-profit organi-zations in the regional aspect is relevant. The paper analyzes the theoretical approaches to disclosing the content of the concept of “social capital”, its structure, and influence on the results of activities of economic entities, which have developed in the scientific literature. The analysis of publications was carried out from the standpoint of a systemic, inte-grated approach based on the principle of polytheo-retical, that is, referring to conceptual ideas and conclusions of scientists from different fields of knowledge and bringing them together. Descriptive, diachronic, axiomatic methods of analysis of scien-tific publications were used. Based on a critical un-derstanding of the publications of foreign and do-mestic scientists, the following conclusion has been made that there are methodological limitations in the study of the social capital of SONPO at the re-gional level. A territorial approach to its study is proposed, within which the conceptual model takes into account the regional specificity of social capital and develops tools and methods for its measure-ment.
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Books on the topic "SONPV"

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Tōin, Kinsada. Sonpi bunmyaku. Tōkyō: Yoshikawa Kōbunkan, 1987.

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1874-1946, Kuroita Katsumi, Maruyama Jirō 1899-1972, and Kokushi Taikei Henshūkai (Japan), eds. Sonpi bunmyaku. Tōkyō: Yoshikawa Kōbunkan, 2001.

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Nihon keizai saisei e no hōteki keishō: Sonpo kiki, gyōkaku, kinʼyū bigguban. Tōkyō: Bokutakusha, 1998.

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Howaito kara: Ginko, shosha, sonpo no rodoshatachi. Shin Nihon Shuppansha, 1990.

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Q & A hoken no katsuyō to hōmu zeimu: Seiho sonpo daisan bunʼya no hoken. Nagoya-shi: Shin Nihon Hōki, 2006.

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Conference papers on the topic "SONPV"

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Rahman, Syed Obaidur. "Comprehensive Traffic Safety Program of Saudi Aramco Safaniya Onshore Producing Department SOnPD Reduces Fatal Traffic Accidents in the Khafji and Nuayriah Areas." In SPE Kingdom of Saudi Arabia Annual Technical Symposium and Exhibition. Society of Petroleum Engineers, 2016. http://dx.doi.org/10.2118/182772-ms.

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