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Helicobacter pylori (HP) infection represents a major global health concern related to gastric cancer. University students are at a critical stage of forming health knowledge and behaviors and are expected to play an educational role in future family health, yet research on their HP awareness and practices remains insufficient. This study adopted a cross-sectional design based on convenience sampling and investigated 2,025 university students in East China using a reliable self-developed questionnaire. Among the 1,791 participants who had heard of HP, 30.6%, 42.9%, and 26.5% respectively demonstrated low, moderate, and high levels of HP knowledge. Multivariable ordinal logistic regression revealed that gender, major type, family geographic district, household’s per capita living area, father’s education attainment, and family history of gastrointestinal diseases were independent influencing factors for HP knowledge. Only 22.9% of the participants had ever undergone HP screening, among whom the infection rate was 26.3%. Multivariable binary logistic regression indicated that grade, major type, parental education attainment, gastrointestinal discomfort in the last year, and family history of gastrointestinal diseases significantly influenced screening participation. Meanwhile, frequent consumption of coffee/milk tea, frequent consumption of seafood, higher frequency of fruit and vegetable intake, and household tableware sharing were associated with HP infection. University students exhibited moderate HP knowledge and low screening rates, influenced by multiple factors. Targeted health education and screening promotion are needed to enhance their role in family health communication.

Aim To explore the research challenges and experiences faced by part‐time postgraduate nursing students and reveal the underlying reasons behind these challenges. Design A descriptive qualitative study design was applied in this study. Methods Fourteen part‐time postgraduate nursing students were recruited using a combination of purposeful sampling and snowball sampling. Data were collected via in‐depth semi structured interviews and analysed using reflexive thematic analysis. Consolidated criteria for reporting qualitative studies (COREQ): 32‐item checklist was used to report this study. Results Two main themes and six subthemes were identified. The first theme revealed that part‐time postgraduate nursing students ‘conducting research amidst hustle and bustle’. Conflicting commitments, time and space constraints that weakened interpersonal research support, and difficulty in meditating on research were the main challenges they faced in the research process. The second theme described part‐time postgraduate nursing students' experiences of ‘perplexity’ about nursing research, including differences from expectations, self‐doubt and a painful process. Compared to full‐time postgraduate nursing students, part‐time postgraduate nursing students faced unique research challenges that impacted their physical, mental and academic completion. Students, nursing educators and healthcare facility administrators should be aware of these challenges and experiences, and all three should work together to address them. Part‐time postgraduate nursing students need to improve their time management and other skills to ensure learning engagement and efficiency. Nursing educators should guide students through transformative learning at critical junctures for research challenges. Collaboration between schools and healthcare organisations to create supportive environments for part‐time postgraduate nursing students needs to be further explored. Patient or Public Contribution One interviewee participated in the design of the interview guide, and 14 part‐time postgraduate nursing students expressed their challenges and experiences in the nursing research process. Thanks to them for sharing, enabling researchers to access the data and analyse it.

The present study aimed to examine the multi-faceted self-supporting ability profiles of rural empty-nesters in northwestern China on the basis of the self-care ability, economic self-support ability, health self-maintenance ability, physical health self-maintenance ability, and psychological health self-maintenance ability using latent profile analysis. It identified the association of self-supporting ability profiles with demographic variables and sense of coherence. The analysis included 1066 participants (mean age = 70.2; SD = 4.3). The results of latent profile analysis identified three distinctive patterns of self-supporting ability―low physical health self-maintenance ability (C1, 20.5%), low psychological health self-maintenance ability (C2, 31.4%), and high social self-adaption ability (C3, 48.0%). The specific demographic variable age (p < 0.05), monthly income (p < 0.05), education level (p < 0.05), how often their children visit (p < 0.05), how often their children contact them (p < 0.05), whether they drink (p < 0.05), the frequency of physical exercise (p < 0.05), relationship with children (p < 0.05), relationship with neighbours (p < 0.05), medical insurance (p < 0.05), and the number of chronic diseases (p < 0.05) were significantly different among the identified three profiles. A statistically significant positive association existed between self-supporting ability profiles and sense of coherence (SOC) (p < 0.001). The results of multinomial logistic regression showed that a greater sense of coherence (SOC), age ≥ 80, monthly income (RMB) (RMB is the abbreviation for Renminbi) < 1000, a good relationship with neighbours, and one type of chronic disease were significantly associated with C1 when compared with C3 (p < 0.05). Furthermore, a greater SOC, their children visiting and contacting them many times per week or once per week were more significantly related to C2 than to C3 (p < 0.05). This study revealed three groups of self-supporting ability and its related predictors in empty-nesters. The predictors related to particular classes of self-supporting ability can provide information for targeted interventions to improve the self-supporting ability of empty-nesters living in rural areas.

The research on sea ice resources is the academic base of sea ice exploitation in the Bohai Sea. According to the ice-water spectrum differences and the correlation between ice thickness and albedo, this paper comes up with a sea ice thickness inversion model based on the NOAA/AVHRR data. And then a sea ice resources quantity （SIQ） time series of Bohai Sea is established from 1987 to 2009. The results indicate that the average error of inversion sea ice thickness is below 30%. The maximum sea ice resources quantity is about 6×109 m3 and the minimum is 1.3×109 m3. And a preliminary analysis has been made on the errors of the estimate of sea ice resources quantity （SIQ）.

P731.15; The research on sea ice resources is the academic base of sea ice exploitation in the Bohai Sea.According to the ice-water spectrum differences and the correlation between ice thickness and albedo,this paper comes up with a sea ice thickness inversion model based on the NOAA/AVHRR.data.And then a sea ice resources quantity (SIQ) time series of Bohai Sea is established from 1987 to 2009.The results indicate that the average error of inversion sea ice thickness is below 30％.The maximum sea ice resources quantity is about 6× 109 m3 and the minimum is 1.3x 109 ma.And a preliminary analysis has been made on the errors of the estimate of sea ice resources quantity (SIQ).