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Advancement in porphyrin/phthalocyanine compounds-based perovskite solar cells

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Genome-wide identification of the pectate lyase(PEL)gene family members in Malvaceae,and their contribution to cotton fiber quality

结构化学 2024年第3期43卷 55-66页

作者： Chen Lu Zefeng Yu Jing Cao State Key Laboratory of Applied Organic Chemistry Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu ProvinceCollege of Chemistry and Chemical EngineeringLanzhou UniversityLanzhou730000PR China

Porphyrin and phthalocyanine compounds belong to a class of large and aromatic macrocyclic *** to their unique structures and electronic properties,they have found widespread applications in optoelectronic *** recent years,the doping of porphyrins and phthalocyanines into perovskite solar cells(PSCs)has emerged as an effective strategy to enhance device performance and *** doping strategy enables the modulation of perovskite film crystallization and surface defects,thereby improving charge transfer and enhancing the photo-conversion *** sensitizers,porphyrins and phthalocyanines absorb light in the visible and near-infrared spectral ranges,providing an advantage to the light absorption characteristics of ***,their roles in interface modification and defect repair contribute to the long-term stability of the *** central metal of porphyrin can also adsorb ions and prevent the migration of harmful *** review summarizes the recent progress in the research on porphyrin and phthalocyanine-doped PSCs,empha-sizing their potential value in enhancing optoelectronic performance,increasing stability and expanding the application scope of these devices.

关键词： Porphyrin Phthalocyanine Charge transport Interfacial chemistry Perovskite solar cells

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Journal of Integrative Agriculture 2024年第10期23卷 3264-3282页

作者： Qian Deng Zeyu Dong Zequan Chen Zhuolin Shi Ting Zhao Xueying Guan Yan Hu Lei Fang Zhejiang Provincial Key Laboratory of Crop Genetic Resources the Advanced Seed InstituteCollege of Agriculture andBiotechnologyZhejiang UniversityHangzhou 300058China Hainan Institute Zhejiang UniversitySanya 572025China

Pectin is a major constituent of the plant cell *** lyase(PEL,EC 4.***.2.2)uses anti-β-elimination chemistry to cleave theα-1,4 glycosidic linkage in the homogalacturonan region of ***,limited information is available on the comprehensive and evolutionary analysis of PELs in the *** this study,we identified 597PEL genes from 10 Malvaceae *** and motif analyses revealed that these PELs are classified into six subfamilies:Clades I,II,III,IV,Va,and *** two largest subfamilies,Clades I and II,contained 237 and222 PEL members,*** members of Clades Va and Vb only contained four or five motifs,far fewer than the other *** duplication analysis showed that segmental duplication played a crucial role in the expansion of the PEL gene family in Gossypium *** PELs from Clades I,IV,Va,and Vb were expressed during the fiber elongation stage,but nearly all PEL genes from Clades II and III showed no expression in any of the investigated fiber developmental *** further performed single-gene haplotype association analysis in 2,*** accessions and 229 *** ***,14 PELs were significantly associated with fiber length and strength traits in *** with superior fiber quality,while only eight GhPEL genes were found to be significantly associated with fiber quality traits in *** findings provide important information for further evolutionary and functional research on the PEL gene family members and their potential use for fiber quality improvement in cotton.

关键词： Malvaceae pectate lyase(PEL) Gossypium species fiber quality

The Impact of Interdisciplinary Curriculum Design Based on STEM Education on Elementary Students’Innovative Thinking Abilities

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Education and Teaching Research

Education and Teaching Research 2024年第2期 10-15页

作者： Zhong Xiang School of Foreign Languages Chengdu College of Arts and SciencesChina

This study investigates the impact of an interdisciplinary STEM curriculum on the innovative thinking abilities of elementary school *** a mixed-methods research design,the study compares an experimental group engaged in an integrated STEM curriculum with a control group following a traditional *** data,collected through pre-and post-implementation assessments,indicate a significant enhancement in innovative thinking abilities among students in the experimental *** data,derived from interviews and focus groups,reveal improvements in student engagement,problem-solving skills,and interdisciplinary learning *** study discusses the implications of these findings,highlighting the advantages and challenges of interdisciplinary curriculum *** concludes with recommendations for educational practice and suggestions for future *** of the study and the need for longitudinal research are also addressed.

关键词： Interdisciplinary Education STEM Curriculum Innovative Thinking Elementary Education Mixed-Methods Research

Numerical Simulation of Flow Field and Flow State Division in Thin-Film Evaporators

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Journal of Donghua University(English Edition) 2024年第5期41卷 525-535页

作者： CHEN Xing PENG Yitian HUANG Yao ZOU Kun college of Mechanical Engineering Donghua UniversityShanghai 201620China

The flow field and flow state of thin-film evaporators are complex,and it is significant to effectively divide and quantify the flow field and flow state,as well as to study the internal flow field distribution and material mixing characteristics to improve the efficiency of thin-film *** using computational fluid dynamics(CFD)numerical simulation,the distribution pattern of the high-viscosity fluid flow field in the thin-film evaporators was *** was found that the staggered interrupted blades could greatly promote material mixing and transportation,and impact the film formation of high-viscosity materials on the evaporator ***,a flow field state recognition method based on radial volume fraction statistics was proposed,and could quantitatively describe the internal flow field of thin-film *** method divides the high-viscosity materials in the thin-film evaporators into three flow states,the liquid film state,the exchange state and the liquid mass *** three states of materials could be quantitatively *** results show that the materials in the exchange state can connect the liquid film and the liquid mass,complete the material mixing and exchange,renew the liquid film,and maintain continuous and efficient liquid film evaporation.

关键词： flow state division material mixing thin-film evaporator numerical simulation

Estimation of cancer cell migration in biomimetic random/oriented collagen fiber microenvironments

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Chinese Physics B 2024年第5期33卷 749-756页

作者：姚静如李国强姚喜耀周连杰叶志凯刘艳平郑栋天唐婷宋克纳陈果刘雳宇 Chongqing Key Laboratory of Soft Condensed Matter Physics and Smart Materials College of PhysicsChongqing UniversityChongqing 401331China Chongqing Key Laboratory for Resource Utilization of Heavy Metal Wastewater Aquatic Ecosystems in the Three Gorges Reservoir Region of Chongqing Observation and Research StationChongqing University of Arts and SciencesYongchuan 402160China Wenzhou Institute University of Chinese Academy of SciencesWenzhou 325000China Department of Biomedical Engineering Chongqing University of Posts and TelecommunicationsChongqing 400065China college of Medical Technology and Engineering Henan University of Science and TechnologyHenan 471023China

Increasing data indicate that cancer cell migration is regulated by extracellular matrixes and their surrounding biochemical microenvironment,playing a crucial role in pathological processes such as tumor invasion and ***,conventional two-dimensional cell culture and animal models have limitations in studying the influence of tumor microenvironment on cancer cell ***,the further development of microfluidic technology has provided solutions for the study of such *** utilize microfluidic chip to build a random collagen fiber microenvironment(RFM)model and an oriented collagen fiber microenvironment(OFM)model that resemble early stage and late stage breast cancer microenvironments,*** combining cell culture,biochemical concentration gradient construction,and microscopic imaging techniques,we investigate the impact of different collagen fiber biochemical microenvironments on the migration of breast cancer MDA-MB-231-RFP *** results show that MDA-MB-231-RFP cells migrate further in the OFM model compared to the RFM model,with significant differences ***,we establish concentration gradients of the anticancer drug paclitaxel in both the RFM and OFM models and find that paclitaxel significantly inhibits the migration of MDA-MB-231-RFP cells in the RFM model,with stronger inhibition on the high concentration side compared to the low concentration ***,the inhibitory effect of paclitaxel on the migration of MDA-MB-231-RFP cells in the OFM model is *** findings suggest that the oriented collagen fiber microenvironment resembling the late-stage tumor microenvironment is more favorable for cancer cell migration and that the effectiveness of anticancer drugs is *** RFM and OFM models constructed in this study not only provide a platform for studying the mechanism of cancer development,but also serve as a tool for the initial measurement of drug screening.

关键词： microfluidic chip random collagen fiber microenvironment(RFM) oriented collagen fiber microenvironment(OFM) cancer cell migration

Hepatitis B Vaccination in Medical and Dental Students: A Cross-Sectional Study

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Open Journal of Internal Medicine 2024年第1期14卷 122-130页

作者： Md. Usama Nasr Md. Kamran Saleem Abdullah Saeed CMH Lahore Medical college & Institute of Dentistry Lahore Pakistan

Background: Medical and dental students are at risk of Hepatitis B Virus (HBV) infection. The study aimed to assess the vaccination status against Hepatitis B Virus of students in clinical and non-clinical years of a private medical and dental college, and their knowledge, attitude, and awareness about the subject. Methods: A cross-sectional study was conducted using a pretested, self-administered questionnaire among 203 medical and dental students of CMH Lahore Medical college and Institute of Dentistry (CMH LMC & IOD) in Lahore, Pakistan. Participants were evaluated for their knowledge and vaccination status against Hepatitis B Virus. Students were considered to be fully vaccinated (recipients of 3 doses), partially vaccinated (recipients of 1 or 2 doses), and unvaccinated. Comparisons were made between students of clinical and non-clinical years. Data was entered and analysed using Statistical Package for the Social Sciences (SPSS) version 23. Results: Only 66% (n = 134) of the 203 participants had ever received a Hepatitis B Virus vaccine out of which a meagre 17.2% (n = 35) were fully vaccinated. No significant difference was found in vaccine uptake between students of clinical and non-clinical years (p-value = 0.181) despite significant differences seen in the knowledge of vaccination schedule (p-value = 0.001), the prevalence of needle-stick injuries (p-value = 0.001), and knowledge of protocols to be followed after a needle-stick injury (p-value = 0.001). Conclusion: Our study found that a large proportion of the student population is vulnerable to HBV infection. There is a need to create awareness regarding the subject to increase vaccine uptake. HBV vaccination should be offered to all currently enrolled students and be made mandatory at the time of admission in the future.

关键词： Hepatitis B Vaccine Medical Students Dental Students Hepatitis B Vaccination Needle-Stick Injuries

Endowing low fatigue for elastocaloric effect by refined hierarchical microcomposite in additive manufactured NiTiCuCo alloy

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International Journal of Extreme Manufacturing 2024年第4期6卷 307-322页

作者： Bo Feng Helong Liu Ying Yang Hui Shen Yang Ren Yinong Liu Lishan Cui Bingmin Huang Shijie Hao college of New Energy and Materials China University of PetroleumBeijing 102249People's Republic of China college of Chemical Engineering and Environment China University of PetroleumBeijing 102249People's Republic of China Department of Physics City University of Hong Kong83 Tat Chee AvenueKowloonHong Kong Special Administrative Region of ChinaPeople's Republic of China Department of Mechanical Engineering The University of Western AustraliaPerthWA 6009Australia Jiangsu Smart Advanced Material Tech Co. LtdXuzhou 221000People's Republic of China

NiTiCu-based shape memory alloys have been considered as ideal materials for solid-state refrigeration due to their superb cycling stability for elastocaloric ***,the embrittlement and deterioration caused by secondary phase and coarse grains restrict their applications,and it is still challenging since the geometric components are ***,bulk NiTiCuCo parts with excellent forming quality were fabricated by laser powder bed fusion(LPBF)*** as-fabricated alloy exhibits refined three-phases hierarchical microcomposite formed based on the rapid cooling mode of LPBF,composed of intricate dendritic Ti2Ni–NiTi composite and nano Ti2Cu embedded inside the *** configuration endows far superior elastocaloric stability compared to the as-cast *** low fatigue stems from the strong elastic coupling between the interphases with reversible martensite transformation,revealed by in-situ synchrotron high-energy x-ray *** fabrication of NiTiCuCo alloy via LPBF fills the bill of complex geometric structures for elastocaloric NiTiCu *** understanding of interphase micro-coupling could provide the guide for designing LPBF fabricated shape memory-based composites,enabling their applications for special demands on other functionalities.

关键词： NiTiCuCo shape memoryalloy microcomposite high-energyx-raydiffraction laser powderbedfusion

Stock Type Prediction Based on Multiple Machine Learning Methods

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Journal of Intelligent Learning Systems and Applications 2024年第3期16卷 242-261页

作者： Zhonger Zhu Wansheng Wang college of Mathematics and Physics Shanghai Normal University Shanghai China

Stocks in the Chinese stock market can be divided into ST stocks and normal stocks, so to prevent investors from buying potential ST stocks, this paper first performs SMOTEENN oversampling data preprocessing for the ST stock category, and selects 139 financial indicators and technical factor as predictive features. Then, it combines the Boruta algorithm and Copula entropy method for feature selection, effectively improving the machine learning model’s performance in ST stock classification, with the AUC values of the two models reaching 98% on the test set. In the model selection and optimization, this paper uses six major models, including logistic regression, XGBoost, AdaBoost, LightGBM, Catboost, and MLP, for modeling and optimizes them using the Optuna framework. Ultimately, XGBoost model is selected as the best model because its AUC value exceeds 95% and its running time is less. Finally, the XGBoost model is explained using the SHAP theory and the interaction between features is discovered, further improving the model’s accuracy and AUC value by about 0.6%, verifying the effectiveness of the model.

关键词： Stock Classification Boruta Algorithm Copula Machine Learning Interaction

Impact of a High-Quality Nursing Model on Patient Outcomes in Rheumatology:A Randomized Controlled Study

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Journal of Clinical and Nursing Research 2024年第9期8卷 273-279页

作者： Jing Li Peking Union Medical college Hospital Beijing 100730China

Objective:To enhance the overall nursing effectiveness in the rheumatology and immunology department,explore specific strategies to improve nursing quality using a high-quality care model,and develop a comprehensive nursing ***:A total of 120 hospitalized patients with rheumatoid arthritis from 2022 to January 2024 were *** patients were randomly divided into two groups:an observation group(60 patients)and a control group(60 patients).The control group received conventional nursing care,which included creating a good care environment,providing drug guidance,and offering psychological *** the observation group,a high-quality nursing model was implemented with a focus on meeting the specific needs of the *** two groups were compared in terms of complication rates,treatment compliance,nurse-patient disputes,patient satisfaction with nursing care,sleep quality(PSQI score),and pain levels(VAS score).Results:The incidence of complications in the observation group was 3.33%,significantly lower than that of the control group,with a statistically significant difference(P<0.05).Nursing compliance in the observation group was 100%,and patient satisfaction was 96.67%,both higher than in the control group,with a statistically significant difference(P<0.05).Additionally,the VAS pain score in the observation group decreased to 2.12±1.89,and the PSQI sleep quality score decreased to 6.89±0.33,both lower than in the control group,with statistically significant differences(P<0.05).Conclusion:Focusing on the needs of patients through a high-quality nursing model provides targeted care that improves overall nursing effectiveness for patients with rheumatoid *** approach enhances patient satisfaction with nursing care,increases treatment compliance,reduces the incidence of complications and nurse-patient disputes,improves sleep quality,and alleviates *** model holds significant value for broader applications.

关键词： High-quality nursing Rheumatology and immunology department Nursing model Nursing effect