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Flexible molecules dedicate to release strain of inverted inorganic perovskite solar cell

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Journal of Energy Chemistry 2025年第1期100卷 87-93页

作者： Hongrui Sun Sanlong Wang Pengyang Wang Yali Liu Shanshan Qi Biao Shi Ying Zhao Xiaodan Zhang Institute of Photoelectronic Thin Film Devices and Technology Renewable Energy Conversion and Storage Center State Key Laboratory of Photovoltaic Materials and CellsNankai University Key Laboratory of Photoelectronic Thin Film Devices and Technology of Tianjin Haihe Laboratory of Sustainable Chemical Transformations Engineering Research center of Thin Film Photoelectronic Technology of Ministry of Education Collaborative Innovation center of Chemical Science and Engineering (Tianjin)

The tensile strain in inorganic perovskite films induced by thermal annealing is one of the primary factors contributing to the inefficiency and instability of inorganic perovskite solar cells （IPSCs）,which reduces the defect formation ***,a flexible molecule 5-maleimidovaleric acid （5-MVA） was introduced as a strain buffer to release the residual strain of *** anhydride and carboxyl groups in 5-MVA interact strongly with the uncoordinated Pb2+through Lewis acid-base reaction,thus tightly“pull”the perovskite *** in-between soft carbon chain increased the structural flexibility of CsPbI2.85Br0.15perovskite materials,which effectively relieved the intrinsic internal strain of CsPbI2.85Br0.15,resisted the corrosion of external strain,and also reduced the formation of defects such as VIand *** addition,the introduction of 5-MVA improved crystal quality,passivated residual defects,and narrowed energy level ***,power conversion efficiency （PCE） of NiOxbased inverted IPSCs increased from 19.25% to 20.82% with the open-circuit voltage enhanced from 1.164 V to 1.230 *** release of strain also improved the stability of CsPbI2.85Br0.15perovskite films and devices.

关键词： Inverted inorganic perovskite solar cells Flexible molecules Strain release Crystallization Energy barrier High PCE

What determines walking of older people in their neighborhood?

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Open Journal of Preventive Medicine 2012年第3期2卷 279-286页

作者： Marijke Hopman-Rock Sanne I de Vries Ingrid Bakker Wil TM Ooijendijk lifestyle expertise center TNO Netherlands Organisation for Applied Scientific Research Leiden The Netherlands

Based on literature review and five focus groups, a model was analyzed describing individual, social environmental and physical environmental (perceived) determinants of walking by older people. Aim was to test whether these determinants were significantly associated with the duration of walking by older people (N = 567, 50 - 80 years) in a middle-sized Dutch town. Walking time was best predicted by attitude towards walking (partial correlation in model (partial r) 0.18;p r 0.12, p r 0.21 p r - 0.14, p r 0.28 p < 0.01). The model explained 20% of the total variance in walking time. Conclusion is that individual and social determinants predicted the most variance in walking time and that perceived environmental determinants played only a minor role. Health promotion actions may benefit from these insights.

关键词： Older Adults Physical Activity Environment Health Determinants

A new method of complicated folded fabric modeling

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Journal of Harbin Institute of Technology(New Series) 2012年第2期19卷 43-46页

作者：程涵余莉殷柱伟 College of Aerospace Engineering Nanjing University of Aeronautics and Astronautics Test center of expertise Hewlett-Packard Company

In order to resolve the complicated folded fabric modeling problem and establish the high quality finite element model for fabric working simulation in aviation or aerospace area,the Fluid Structure Interaction(FSI) method based on Arbitrary Lagrangian Eulerian(ALE) coupling theory was applied for modeling in this *** expanded three-dimensional fabric model(a special airbag) was divided into several *** the folded state of each was calculated based on this numerical *** last,the completely folded finite element model was *** method can effectively simulate the complicated and natural folds,and the quality of model is very high which can greatly improve the success rate of fabric working process *** method also can be guidance for other kinds of folded fabric modeling.

关键词： fabric fold ALE FSI inflatable structure

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Replacement of alkali silicate solution with silica fume in metakaolin-based geopolymers

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International Journal of Minerals,Metallurgy and Materials 2019年第5期26卷 555-564页

作者： Ahmed Nmiri Myriam Duc Noureddine Hamdi Oumaya Yazoghli-Marzouk Ezzeddine Srasra National center for Research in Materials Sciences Technop?le Borj Cedria (CNRSM) Department of Chemistry Faculty of Sciences of Tunis University of Tunis El-Manar French Institute of Science and Technology for Transport Development and Networks (IFSTTAR) center for Studies and expertise on Risks Environment Mobility and Development (CEREMA)

A metakaolin(Mk)-based geopolymer cement from Tunisian Mk mixed with different amounts of silica fume(SiO_2/Al_2O_3 molar ratio varying between 3.61 and 4.09) and sodium hydroxide(10M) and without any alkali silicate solution, is developed in this work. After the samples were cured at room temperature under air for 28 d, they were analyzed by X-ray diffraction(XRD), Fourier transform infrared(FTIR) spectroscopy, environmental scanning electron microscopy, mercury intrusion porosimetry, ^(27)Al and ^(29)Si nuclear magnetic resonance(NMR) spectroscopy, and compression testing to establish the relationship between microstructure and compressive strength. The XRD, FTIR, and ^(27)Al and ^(29)Si NMR analyses showed that the use of silica fume instead of alkali silicate solutions was feasible for manufacturing geopolymer cement. The Mk-based geopolymer with a silica fume content of 6 wt%(compared with those with 2% and 10%), corresponding to an SiO_2/Al_2O_3 molar ratio of 3.84, resulted in the highest compressive strength, which was explained on the basis of its high compactness with the smallest porosity. Silica fume improved the compressive strength by filling interstitial voids of the microstructure because of its fine particle size. In addition, an increase in the SiO_2/Al_2O_3 molar ratio, which is controlled by the addition of silica fume, to 4.09 led to a geopolymer with low compressive strength, accompanied by microstructures with high porosity. This high porosity, which is responsible for weaknesses in the specimen, is related to the amount of unreacted silica fume.

关键词： metakaolin silica fume geopolymer cement compressive strength

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Potential of guar gum as a leaky gut model in broilers: Digestibility,performance, and microbiota responses

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Animal Nutrition 2024年第2期17卷 177-187页

作者： Amine Mellouk Tahir Mahmood Maamer Jlali Nuria Vieco-Saiz Virginie Michel Pierre Cozannet Sarper Ozbek Yves Mercier Estelle Devillard Jessika Consuegra Department of R&I in Monogastric Animal Nutrition European Laboratory of Innovation Science & Expertise (ELISE)

Diet is a major modulator of animal resilience and its three pillars: host?s immune response, gut microbiota, and intestinal barrier. In the present study, we endeavour to delineate a challenging condition aimed to degrade these pillars and elucidate its impact on broiler performance and nutrient digestibility. To attain this objective, we opted to use guar gum(GG) as a source of galactomannan. A series of three in vivo experiments were conducted employing conventional or semi-purified diets, supplemented with or without GG during the grower phase(14-28 d). Our findings demonstrate a substantial decline in animal performance metrics such as body weight(reduced by 29%, P < 0.001), feed intake(decreased by 12%, P < 0.001), and feed conversion ratio(up to 58% increase, P < 0.001) in the presence of GG at 2%. The supplementation of a semi-purified diet with incremental doses of GG resulted in a linear reduction(P < 0.001) in the apparent total tract digestibility of dry matter and apparent metabolisable energy. Additionally, a marked reduction in ileal endogenous losses, as well as apparent and standardised digestibility of all amino acids with varying proportions(P < 0.05), was observed. These alterations were accompanied by disrupted gut integrity assessed by fluorescein isothiocyanate-dextran(FITC-d)(P < 0.001) as well as an inflammatory status characterised by elevated levels of acute-phase proteins,namely orosomucoid and serum amyloid A in the sera(P = 0.03), and increased m RNA expression levels of IL-1, IL-6, IL-8, Inos, and K203 genes in the ileum, along with a decrease in Ig A levels in the gut lumen(P < 0.05). Microbial ecology and activity were characterised by reduced diversity and richness(Shannon index, P = 0.005) in the presence of GG. Consequently, our results revealed diminished levels of shortchain fatty acids(P = 0.01) and their producer genera, such as Clostridium＿XIVa and Blautia, in the gut caeca, coupled with excessive accumulation of lactate(17-f

关键词： Animal resilience Guar gum Broilers’ gut health Performance Digestibility Microbiota

Genetic polymorphisms of 16 X-STR loci in the Hani population from Southwest China

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Forensic Sciences Research 2022年第2期7卷 196-201页

作者： Linlin Liu Jinyong Yao Yangzhi Huang Lei Gao Jiameng Dai Xiaokun Yuan Xiufeng Zhang Shengjie Nie Liping Hu School of Forensic Medicine Kunming Medical UniversityKunmingChina Judicial expertise center Kunming Medical UniversityKunmingChina Honghe Public Security Bureau HongheChina

X chromosomal short tandem repeats(X-STRs)have the characteristics of both autosomal and uniparental genetic markers and have been shown to be particularly useful in forensic ***,relevant research or reports have not focused on X-STRs in the Hani *** investigate the genetic variation and forensic efficiency of 16 X-STR loci in the Hani ethnic minority,we calculated the allele frequencies and forensic parameters of 451(116 males and 335 females)unrelated healthy Hani individuals from Yunnan Province,Southwest *** these loci are highly polymorphic in Hani individuals in Yunnan Province except *** combined power of discrimination in males(PDM)and power of discrimination in females(PDF)were found to be 0.999999998433993 and 0.999999999999998,***,a population genetic structure investigation between the Yunnan Hani population and another 18 populations was performed using a principal component analysis,multidimensional scaling plot and neighbouring-joining phylogenetic tree and the findings illustrated that neighbouring populations and different nationalities in the same area appeared to have a closer evolutionary *** study provides the first batch of X chromosome genetic polymorphism data of the Hani population in Yunnan Province,Southwest China and enriches the reference database of the Chinese minority population.

关键词： Forensic sciences forensic genetics forensic parameters genetic polymorphisms Hani population X-STR Yunnan Province

SAR image change detection method based on PPNN

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Science China(Information Sciences) 2021年第8期64卷 257-259页

作者： Guoli NIE Guisheng LIAO Cao ZENG National Laboratory of Radar Signal Processing Xidian University International Coopreation Base of Integrated Electronic Information System of Ministry of Science and Technology Xidian University 2011 Collaborative Innovation center of Information Sensing Xidian University Radar Cognitive Detection Imaging and Target Recognition Overseas Expertise Introduction Center for Discipline Innovation (“111 Center”)Xidian University

Dear editor,In remote sensing research, change detection is said to be a hot spot because of its many applications [1], and lots of synthetic aperture radar(SAR) image change detection methods are proposed. In this study, to address the problem that the accuracy of SAR image change detection needs to be improved, a multi-feature parallel probabilistic neural network(PPNN) is proposed.

关键词： PNN SAR image change detection method based on PPNN image

New insights into protein–polysaccharide complex coacervation:Dynamics,molecular parameters,and applications

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Aggregate 2024年第1期5卷 148-166页

作者： Jiabao Zheng Paul Van der Meeren Weizheng Sun School of Food Science and Engineering South China University of TechnologyGuangzhouChina Department of Green Chemistry and Technology Faculty of Bioscience EngineeringGhent UniversityGhentBelgium Overseas expertise Introduction center for Discipline Innovation of Food Nutrition and Human Health(111 center) GuangzhouChina

For more than a decade,the discovery of liquid–liquid phase separation within living organisms has prompted colloid scientists to understand the connection between coacervate functionality,phase behavior,and dynamics at a multidisciplinary *** the protein–polysaccharide was the first system in which the coacervation phenomenon was discovered and is widely used in food systems,the phase state and relaxation dynamics of protein–polysaccharide complex coacervates(PPCC)have rarely been discussed ***,this review aims to unravel the relationship between PPCC dynamics,thermodynamics,molecular architecture,applications,and phase states in past *** ahead,solving the way molecular architecture spreads to macro-functionality,that is,establishing the relationship between molecular architecture–dynamics–application,will catalyze novel advancements in PPCC research within the field of foods and biomaterials.

关键词： dynamics encapsulation liquid coacervate protein-polysaccharide complex coacervation solid precipitate

COVID-19:A Challenge for Forensic and Pathological Researchers

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Journal of Forensic Science and Medicine 2020年第2期6卷 58-61页

作者： Huang Sizhe- Wang Rongshuai Wang Yunyun Zhang Junchao Zhang Youyou Guan Chuhuai Zhang Jie Yu Yalei Tian Qishuo Qu Guoqiang Liu Qian Zhou Yiwu Ren Liang Liu Liang Department of Forensic Medicine Tongji Medical CollegeHuazhong University of Science and TechnologyWuhanHubeiChina Chongxin Judicial expertise center WuhanHubeiChina

Coronavirus disease 2019(COVID-19)emerged in Wuhan,Hubei province,in December 2019,then spread rapidly in a very short time resulting in thousands of ***,details about the pathological mechanisms involved in the disease-including those associated with death-are currently *** is important to perform autopsies and pathological examinations of patients who have died from COVID-19 as soon as *** is the responsibility of forensic and pathological researchers,but it does pose various *** autopsies should be conducted in an isolated operating room under constantly maintained negative *** examiners should be protectively equipped in accordance with biosafety level 3 *** is essential to disinfect the room,facilities,instruments,and materials after the procedure and to dispose of all wastes *** and precise operations during autopsies and pathological examinations will minimize the possibility of viral *** many autopsies of COVID-19 patients as possible should be performed,until a detailed understanding of the mechanisms involved in COVID-19 pathogenesis and death has been attained.

关键词： Autopsy coronavirus disease forensic medicine severe acute respiratory syndrome