Effects of the type, chemical structure and NCO/OH of resins on wet adhesion and salt spray resistance of two component waterborne polyurethane coating were studied in this paper. The content of functional groups in resins and films were analysed by areas of their FT-IR absorption peak to study the relationship with anticorrosive performance of coatings. Coatings based on resins with more -OH tend to have stronger wet adhesion and salt spray resistance because resins with more -OH have more possibilities to react with -NCO to form a compact film with a higher crosslinking degree. The wet adhesion of coatings after 8 h of immersion deteriorated from level 1 to level 5 with the increase of NCO/OH due to the decrease of -OH in coatings to link with substrates. And excess -NCO tend to react with H 2 O to generate CO 2 to form cracked physical bubbles, which would weaken the wet adhesion.Abstract: Let F denote a eld and let V denote a vector space over F with nite positive a pair A, A * of diagonalizable F-linear maps on V, each of which acts on an eigenbasis f irreducible tridiagonal fashion. Such a pair is called a Leonard pair. We consider the se there exists an automorphism of the endomorphism algebra of V that swaps A and A * . Su is unique, and called the duality A ↔ A * . In the present paper we give a comprehens duality. In particular, we display an invertible F-linear map T on V such that the map X → A ↔ A * . We express T as a polynomial in A and A * . We describe how T acts on ags and 24 bases for V.

Kokkos is a programming model for writing performance portable applications for all major high performance computing platforms. It provides abstractions for data management and common parallel operations, allowing developers to write portable high performance code with minimal knowledge of architecture-specific details. Kokkos is implemented as a heavily-templated C++ library. However, C++ is not ideal for rapid prototyping and quick algorithmic exploration. An increasing number of developers use Python for scientific computing, machine learning, and data analytics. In this paper, we present a new Python framework, dubbed PyKokkos, for writing performance portable applications entirely in Python. PyKokkos provides Kokkos-like abstractions that are easier to use and more concise than the C++ interface. We implemented PyKokkos by building a translator from a subset of Python to C++ Kokkos and bridging necessary function calls via automatically generated Python bindings. PyKokkos is also compatible with NumPy, a widely-used high performance Python library. By porting several existing Kokkos applications to PyKokkos, including ExaMiniMD (∼3k lines of code in C++), we show that the latter can achieve efficient execution with low performance overhead. CCS CONCEPTS• Software and its engineering → Source code generation; • Computing methodologies → Parallel programming languages.

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Background: The Temple University Fox Chase Cancer Center and Hunter College Cancer Health Disparity Partnership (TUFCCC/HC Cancer Partnership) is a comprehensive collaborative cancer health research infrastructure in Pennsylvania, New Jersey, and New York City (PNN) Region. Its goals are to enhance equity in cancer health through rigorous and sustainable cancer research, train the next generation of researchers, and establish community outreach programs. Establishing and strengthening a bidirectional academic-community partnership is a key component of this partnership. While such collaborative relationships have been strongly endorsed by the National Institutes of Health (NIH), little has been documented demonstrating how such partnership can be created and maintained. Objectives: Building on previous established collaborative relationships with the community-based organizations (CBOs), we created and expanded a bidirectional, academic–community partnership in African American, Asian American, and Latinx communities in the PNN region to (1) assess the level of awareness of cancer prevention knowledge; (2) identify community needs and barriers to cancer prevention healthcare services; (3) jointly develop and implement community-based educational initiatives to promote cancer prevention in medically underserved communities. Methods: In this presentation, we established a comprehensive evaluation metric to assess the bidirectional partnership. The metric, its outputs, and outcomes were adapted from the Evaluation Metrics Manual published by the National Institute of Environmental Health Services of NIH. We also formed a Community Advisory Board (CAB) to guide our bidirectional communication and jointly develop a community-driven cancer education agenda. Results: The CAB played a critical role in the development of the bidirectional partnership. They provided key inputs in identifying the goals and benchmarks of the educational initiative, and in facilitating the recruitment and implementation of the initiative. Our evaluation indicated that a bidirectional partnership is an interactive and non-linear process that requires constant feedback and communication. We identified several successes and challenges during our co-learning and co-implementing process. We also identified areas for improvement, specifically, establishing a more efficient channel for information and resource sharing, and greater efforts on dissemination of scientific findings to the community. Conclusions: Actively engaging CAB and CBOs in the cancer prevention educational initiatives from the onset enhanced the efficacy of the initiatives and strengthened the research training capacity of the academic institutions. We will share best practices in our bidirectional, academic–community partnership building and discuss next steps in adaptation and further development of the partnership. Citation Format: Lin Zhu, Ellen J. Kim, Steven Zhu, Nathaly Rubio-Torio, Evelyn González, Marilyn A. Fraser, Ming-chin Yeh, Marsha Zibalese-Crawford, Grace X. Ma, Olorunseun O. Ogunwobi, Yin Tan. Evaluating a bidirectional academic–community partnership with multiple racial/ethnic communities for cancer prevention initiatives and cancer health disparities research [abstract]. In: Proceedings of the 15th AACR Conference on the Science of Cancer Health Disparities in Racial/Ethnic Minorities and the Medically Underserved; 2022 Sep 16-19; Philadelphia, PA. Philadelphia (PA): AACR; Cancer Epidemiol Biomarkers Prev 2022;31(1 Suppl):Abstract nr PR010.

Background: The existing body of literature suggests that modifiable lifestyle behaviors such as alcohol consumption and dietary behaviors were linked to viral hepatitis B/C and liver cancer. So far, most of the liver cancer awareness campaigns and behavioral interventions have focused on preventive behaviors such as screening, vaccination, and early diagnosis. Not enough efforts have been made to raise awareness of behavioral mechanism of liver cancer prevention, especially in the medically underserved populations. Methods: We used the community-based participatory research (CBPR) approach to implement an education initiative regarding the promotion of liver cancer among the African, Asian, and Hispanic populations within the Philadelphia metropolitan area and New York City. In this study, we used data from the pre-education surveys and follow-up assessments at 6 months post-education to assess the changes in dietary behaviors and alcohol consumption among participants. Results: The study sample includes 344 participants recruited through community-based organizations. The sample consists of 31 African Americans, 174 Asian Americans, and 139 Hispanic Americans. Among the African Americans participants, the consumption of scores such as fruits (2.710 to 3.581) and poultry (2.613 to 3.677) increased significantly, while vegetables and red meats decreased. In Asian Americans, the consumption of non-refined cereals (3.362 to 4.282), red meats (2.655 to 3.195), and dairy (2.851 to 3.701) products decreased. Lastly, among the Hispanic American participants poultry (2.173 to 3.554), dairy products (2.101 to 3.863), and olive oil (3.022 to 3.849) increased, as well as the consumption of alcohol. Conclusion: This community-based educational imitative generated different impacts in the three populations, further highlighting the needs for more targeted, culturally tailored efforts in health promotion among these underprivileged communities. Citation Format: Tamar Tertulien, Ellen J. Kim, Wenyue Lu, Steven Zhu, Nathaly Rubio-Torio, Evelyn González, Marilyn A. Fraser, Ming-Chin Yeh, Lin Zhu, Grace X. Ma, Olorunseun O. Ogunwobi, Yin Tan. Reducing liver cancer risk through dietary change: Positive results from a community-based educational initiative in three racial/ethnic groups [abstract]. In: Proceedings of the 15th AACR Conference on the Science of Cancer Health Disparities in Racial/Ethnic Minorities and the Medically Underserved; 2022 Sep 16-19; Philadelphia, PA. Philadelphia (PA): AACR; Cancer Epidemiol Biomarkers Prev 2022;31(1 Suppl):Abstract nr C069.