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Cation engineering on lead iodide perovskites for stable and high-performance photovoltaic applications

Journal of energy Chemistry 2018年第4期27卷 1017-1039页

作者： Jue Gong Peijun Guo savannah e.benjamin P.Gregory Van Patten Richard D.Schaller Tao Xu Department of Chemistry and Biochemistry Northern Illinois UniversityDeKalbIL 60115USA Center for Nanoscale Materials Argonne National Laboratory9700 South Cass AvenueLemontIL 60439USA Department of Chemistry Middle Tennessee State UniversityMurfreesboroTN 37132USA

Perovskite solar cells （PSCs） based on methylammonium lead iodide （CH3NH3PbI3） have shown unprecedentedly outstanding performance in the recent years. Nevertheless, due to the weak interaction between polar CH3NH3＋（MA＋） and inorganic PbI3 sublattices, CH3NH3PbI3 dramatically suffers from poor moisture stability, thermal decomposition and device hysteresis. As such, strong electrostatic interactions between cations and anionic frameworks are desired for synergistic improvements of the abovementioned issues. While replacements of I with Br and/or CI evidently widen optical bandgaps of perovskite materials, compositional modifications can solely be applied on cation components in order to preserve the broad absorption of solar spectrum. Herein, we review the current successful practices in achieving efficient, stable and minimally hysteretic PSCs with lead iodide perovskite systems that employ photoactive cesium lead iodide （CsPbI3）, formamidinium lead iodide （HC（NH2）2PbI3, or FAPbI3）, MA1-x y-zFAxCsyRbzPbI3 mixed-cation settings as well as two-dimensional butylammonium （C4H9NH3＋, or BA＋）/MA＋, polymeric ammonium （PeI＋）/MA＋ co-cation layered structures. Fundamental aspects behind the stabilization of perovskite phases α-CsPbi3, α-FAPbI3, mixed-cation MA1-x-y-zFAxCsyRb2PbI3 and crystallographic alignment of （BA）2（MA）3Pb4I13 for effective light absorption and charge transport will be discussed. This review will contribute to the continuous development of photovoltaic technology based on PSCs.

关键词： Solar energy conversion Perovskite solar cells Power conversion efficiency Optical bandgaps Device hysteresis Metastabte phases

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Particle elasticity influences polymeric artificial antigen presenting cell effectiveness in vivo via CD8+T cell activation,macrophage uptake,and the protein corona

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Nano Research 2024年第10期17卷 9052-9064页

作者： savannah e.est-Witte Sydney R.Shannon Dennis H.Gong Kaitlyn G.Calabresi Jawaun J.Harris Kaitlyn Storm edwin J.Yoo Ariel Isser Vivek P.Jani Natalie K.Livingston Mary O.Omotoso Kelly Rhodes elana Ben-Akiva Randall A.Meyer Zoe T.Hsieh Simone Sidoli Stephany Y.Tzeng Jonathan P.Schneck Jordan J.Green Translational Tissue engineering Center Institute for NanobiotechnologyDepartment of Biomedical EngineeringJohns Hopkins School of Medicine400 N BroadwayBaltimoreMD 21231USA Institute for Cell engineering Department of PathologyJohns Hopkins School of Medicine733 N BroadwayBaltimoreMD 21205USA Department of Biochemistry Albert Einstein College of MedicineThe BronxNew York CityNY 10461USA

Adoptive cell therapy(ACT)is an immunotherapy strategy for cancer that has seen widespread clinical *** ACT,patient-derived lymphocytes are stimulated with the antigen of interest ex vivo,proliferated,then returned to the patient to initiate an antigen-specific antitumor *** effective,this process is resource-intensive and logistically impossible for many *** artificial antigen presenting cells(aAPCs)offer a potential“off-the-shelf”alternative to ex vivo *** particulate aAPCs perform well in vitro,they have had limited success in vivo due to poor bioavailability after *** to bioavailability include rapid clearance,unfavorable biodistribution,and inadequate interactions with CD8+T cells at sites of *** properties such as elasticity have been shown to vastly impact the bioavailability and particle-cell interactions,but this has yet to be investigated in the context of aAPCs for in vivo T-cell *** literature likewise indicates that biomaterial properties,especially elasticity,can modulate T-cell activation in *** the goal of creating a more biomimetic,next-generation particulate aAPC,we developed a poly(ethylene)glycol hydrogel particle platform with tunable elasticity to investigate the impact of elasticity on antigen-specific T cell activation for in vivo adoptive *** this knowledge,we were able to gain more precise control over in vivo T cell activation and investigate possible mechanisms including the effects of aAPC elasticity on T cell binding,macrophage uptake,and the protein corona.

关键词： adoptive cell therapy artificial antigen presenting cells particle drug delivery elasticity protein corona poly(ethylene glycol)

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examination of Homologies between COVID-19 Vaccines and Common Allergens:The Potential for T Cell-mediated Responses for Allergic Rhinitis and Asthma

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Infectious Diseases & Immunity 2022年第4期2卷 282-284页

作者： Micah Hartwell benjamin H.Greiner savannah Nicks Oklahoma State University Center for Health Sciences Department of Psychiatry and Behavioral SciencesTulsaOklahomaUnited States Oklahoma State University Center for Health Sciences Office of Medical Student ResearchTulsaOklahomaUnited States University of Texas Medical Branch Department of Internal MedicineGalvestonTexasUnited States

As the SARS-CoV-2 virus shares relatively large protein sequences homologous to grass pollens,dust mites,and molds,our objective was to assess the potential overlap between the COVID-19mRNA vaccines fromPfizer-BioNtech andModerna and known *** found 7 common allergens with potential for cross-reactivity with the Pfizer vaccine and 19 with theModerna vaccine,including common grasses,molds,and dust mites.T-cell mediated antigen cross-reactivity between viruses and allergens is a relatively new area of study in clinical immunology;a discipline that may be particularly useful regarding the SARS-CoV-2 virus and the allergic response in *** results suggest that vaccination with the Pfizer-BioNtech andModerna COVID-19 vaccinesmay contribute to T-cell cross-reactivity with allergens that impact allergic asthma and allergic *** research should assess the clinical implications of COVID-19 vaccination on the severity and symptomatology of the allergic disease,in addition to natural viral infection.

关键词： Rhinitis,allergic Allergy COVID-19 Cross-reactivity mRNA Vaccines

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Upregulation of RIN3 induces endosomal dysfunction in Alzheimer’s disease

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Translational Neurodegeneration 2020年第2期9卷 290-308页

作者： Ruinan Shen Xiaobei Zhao Lu He Yongbo Ding Wei Xu Suzhen Lin savannah Fang Wanlin Yang Kijung Sung Brian Spencer Robert A.Rissman Ming Lei Jianqing Ding Chengbiao Wu Institute of Neurology Ruijing HospitalShanghai JiaoTong University School of Medicine197 Ruijin Er Rd.Shanghai200025China Department of Neurosciences University of California San Diego School of MedicineRoom 312 MC-06249500 Gilman DriveLa JollaCA92093-0624USA Shanghai Institute of Precision Medicine Shanghai200125China Department of Neurology Zhuijiang HospitalSouthern Medical UniversityGuangzhouChina San Diego VA Health System San DiegoCAUSA

Background In Alzheimer’s Disease(AD),about one-third of the risk genes identified by GWAS encode proteins that function predominantly in the endocytic *** them,the Ras and Rab Interactor 3(RIN3)is a guanine nucleotide exchange factor(GeF)for the Rab5 small GTPase family and has been implicated to be a risk factor for both late onset AD(LOAD)and sporadic early onset AD(seOAD).However,how RIN3 is linked to AD pathogenesis is currently *** Quantitative PCR and immunoblotting were used to measure the RIN3 expression level in mouse brain tissues and cultured basal forebrain cholinergic neuron(BFCNs).Immunostaining was used to define subcellular localization of RIN3 and to visualize endosomal changes in cultured primary BFCNs and PC12 *** flag-tagged RIN3 protein was purified from HeK293T cells and was used to define RIN3-interactomes by mass ***3-interacting partners were validated by co-immunoprecipitation,immunofluorescence and yeast two hybrid *** imaging of primary neurons was used to examine axonal transport of amyloid precursor protein(APP)andβ-secretase 1(BACe1).Immunoblotting was used to detect protein expression,processing of APP and phosphorylated forms of *** We have shown that RIN3 mRNA level was significantly increased in the hippocampus and cortex of APP/PS1 mouse *** forebrain cholinergic neurons(BFCNs)cultured from e18 APP/PS1 mouse embryos also showed increased RIN3 expression accompanied by early endosome *** addition,via its proline rich domain,RIN3 recruited BIN1(bridging integrator 1)and CD2AP(CD2 associated protein),two other AD risk factors,to early ***,overexpression of RIN3 or CD2AP promoted APP cleavage to increase its carboxyl terminal fragments(CTFs)in PC12 *** of RIN3 or the neuronal isoform of BIN1 increased phosphorylated Tau ***,upregulation of RIN3 expression promoted accumulation of APP CTFs and increased

关键词： Alzheimer's disease(AD) AD risk factors endosomes Trafficking RIN3 BIN1 CD2AP Tau

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The complexities underlying age-related macular degeneration： could amyloid beta play an important role？

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Neural Regeneration Research 2017年第4期12卷 538-548页

作者： savannah A. Lynn eloise Keeling Rosie Munday Gagandeep Gabha Helen Griffiths Andrew J.Lotery J.Arjuna Ratnayaka Clinical and experimental Sciences Faculty of Medicine University of Southampton Southampton United Kingdom eye Unit University Southampton NHS Trust Southampton United Kingdom

e-related macular degeneration （AMD） causes irreversible loss of central vision for which there is no effective treatment. Incipient pathology is thought to occur in the retina for many years before AMD manifests from midlife onwards to affect a large proportion of the elderly. Although genetic as well as non-genetic/environmental risks are recognized, its complex aetiology makes it difficult to identify susceptibility, or indeed what type of AMD develops or how quickly it progresses in different individuals. Here we summarize the literature describing how the Alzheimer＇s-linked amyloid beta （Aβ） group of misfolding proteins accumulate in the retina. The discovery of this key driver of Alzheimer＇s disease in the senescent retina was unexpected and surprising, enabling an altogether different perspective of AMD. We argue that Aβ fundamentally differs from other substances which accumulate in the ageing retina, and discuss our latest findings from a mouse model in which physiological amounts of Aβ were subretinally-injected to recapitulate salient features of early AMD within a short period. Our discoveries as well as those of others suggest the pattern of Aβ accumulation and pathology in donor aged/AMD tissues are closely reproduced in mice, including late-stage AMD phenotypes, which makes them highly attractive to study dynamic aspects of Aβ-mediated retinopathy. Furthermore, we discuss our findings revealing how Aβ behaves at single-cell resolution, and consider the long-term implications for neuroretinal function. We propose Aβ as a key element in switching to a diseased retinal phenotype, which is now being used as a biomarker for latestage AMD.

关键词： amyloid beta (Aβ) retinal neurons retina mouse models age related macular degeneration(AMD)

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Analysis of PFAAs in American alligators part 2： Potential dietary exposure of South Carolina hunters from recreationally harvested alligator meat

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Journal of environmental Sciences 2017年第11期29卷 31-38页

作者： Jessica J.Tipton Louis J.Guillette Jr Susan Lovelace.benjamin B.Parrott Thomas R.Rainwater Jessica L.Reiner College of Charleston Charleston SC 29724 USA Medical University of South Carolina Department of Obstetrics and Gynecology Charleston SC 29425 USA University of Georgia Odum School of Ecology Savannah River Ecology Laboratory Jackson SC 29831 USA Torn Yawkey Wildlife Center & Belle W. Baruch Institute of Coastal ecology and Forest Science Clemson University P.O. Box 59(5 Georgetown SC 29442 USA National Institute of Standards and Technology Chemical Sciences Division Hollings Marine Laboratory Charleston SC 29412 USA

exposure to perfluorinated alkyl acids（PFAAs） has been linked to many harmful health effects including reproductive disorders, developmental delays, and altered liver and kidney function. Most human exposure to environmental contaminants, including PFAAs,occurs through consumption of contaminated food or drinking water. This study uses PFAA data from meat samples collected from recreationally harvested American alligators（Alligator mississippiensis） in South Carolina to assess potential dietary exposure of hunters and their families to PFAAs. Consumption patterns were investigated using intercept surveys of 23 hunters at a wild game meat processor. An exposure scenario using the average consumption frequency, portion size, and median perfluorooctane sulfonic acid（PFOS） concentration in alligator meat from all hunt units found the daily dietary exposure to be 2.11 ng/kg body weight per day for an adult human. Dietary PFOS exposure scenarios based on location of harvest suggested the highest daily exposure occurs with alligator meat from the Middle Coastal hunt unit in South Carolina. Although no samples were found to exceed the recommended threshold for no consumption of PFOS found in Minnesota state guidelines, exposure to a mixture of PFAAs found in alligator meat and site-specific exposures based on harvest location should be considered in determining an appropriate guideline for vulnerable populations potentially exposed to PFAAs through consumption of wild alligator meat.

关键词： Public hunt American alligator Dietary exposure PFOS Consumption advisory Contaminant consumption

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Analysis of PFAAs in American alligators part 1： Concentrations in alligators harvested for consumption during South Carolina public hunts

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Journal of environmental Sciences 2017年第11期29卷 24-30页

作者： Jessica J.Tipton Louis J.Guillette Jr Susan Lovelace.benjamin B.Parrott Thomas R.Rainwater Jessica L.Reiner College of Charleston Charleston SC 29424 USA Medical University of South Carolina Department of Obstetrics and Gynecology Charleston SC 29425 USA University of Georgia Odum School of Ecology Savannah River Ecology Laboratory Jackson SC 29831 USA Tom Yawkey Wildlife Center & Belle W. Baruch Institute of Coastal ecology and Forest Science Clemson University P.O. Box 596 Georgetown SC 29442 USA National Institute of Standards and Technology Chemical Sciences Division Hollings Marine Laboratory Charleston SC 29412 USA

environmental contamination resulting from the production or release of harmful chemicals can lead to negative consequences for wildlife and human health. Perfluorinated alkyl acids（PFAAs） were historically produced as protective coatings for many household items and currently persist in the environment, wildlife, and humans. PFAAs have been linked to immune suppression, endocrine disruption, and developmental toxicity in wildlife and laboratory studies. This study examines the American alligator, Alligator mississippiensis,as an important indicator of ecosystem contamination and a potential pathway for PFAA exposure in humans. Alligator meat harvested in the 2015 South Carolina（SC） public hunt season and prepared for human consumption was collected and analyzed for PFAAs to determine meat concentrations and relationships with animal body size（total length）, sex, and location of harvest. Of the 15 PFAAs analyzed, perfluorooctane sulfonate（PFOS） was found in all alligator meat samples and at the highest concentrations（median 6.73 ng/g）. No relationship was found between PFAA concentrations and total length or *** of one or all compounds varied significantly across sampling locations, with alligators harvested in the Middle Coastal hunt unit having the highest PFOS concentrations（median 16.0 ng/g; p = 0.0001）. Alligators harvested specifically from Berkley County, SC（located in the Middle Coastal hunt unit） had the highest PFOS concentrations and the greatest number of PFAAs detected（p 〈 0.0001）. The site-specific nature of PFAA concentrations in alligator meat observed in this study suggests a source of PFAA contamination in Berkley County, SC.

关键词： Perfluorinated alkyl acids American alligators South Carolina Perfluorooctane sulfonate(PFOS) Dietary exposure

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Phytogeographical Distribution and Fruit Diversity of <i>Lagenaria siceraria</i>Species in Nigeria

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American Journal of Plant Sciences 2019年第6期10卷 958-975页

作者： Fortune O. Awala benjamin C. Ndukwu Ikechukwu O. Agbagwa Department of Plant Science & Biotechnology University of Port Harcourt Port Harcourt Nigeria

Phytogeographical distribution and fruit diversity of Lagenaria siceraria (Mol.) Standl species in Nigeria were accessed. Information on the distribution and fruit diversity was sourced from three herbaria, Forestry Research Institute of Nigeria Herberia, University of Port Harcourt Herberia and the University of Ibadan Herberia. A field survey across fifteen states in Nigeria namely Kaduna, Kano, Plateau, Oyo, Akwa Ibom, Cross River, Taraba, Bayelsa and enugu, ebonyi, Ondo, Ogun, Kwara Anambra and Rivers State. A total of twenty-four fruit shapes were accessed. The diversity of fruit shapes across the geographical regions of Nigeria shows that the Guinea savannah has all the twenty-four different landraces represented, while Tropical rain forest has nineteen, Sudan savannah has seventeen and Freshwater swamp and the Saltwater swamp has eleven different fruit shapes respectively. The fruits of Lagenaria siceraria (Mol) Standl is considered a topocline since it is not affected only by environmental factors but possess a wide distribution pattern across the geographical regions of Nigeria.

关键词： Fruit Diversity Lagenaria siceraria (Mol) Standl Topocline ecocline and Phytogeographical Distribution

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Understanding the Local Carbon Fluxes Variations and Their Relationship to Climate Conditions in a Sub-Humid savannah-ecosystem during 2008-2015: Case of Lamto in Cote d’Ivoire

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Atmospheric and Climate Sciences 2020年第2期10卷 186-205页

作者： Dro Touré Tiemoko Fidèle Yoroba Adama Diawara Kouakou Kouadio benjamin Komenan Kouassi Assi Louis Martial Yapo Laboratory of Atmosphere Physic and Mechanic Fluids (LAPA-MF) University Felix Houphouet-Boigny UFR SSMT Abidjan Côte d’Ivoire Geophysical Station of Lamto (GSL) N’Douci Côte d’Ivoire

The temporal variations of the Gross Primary Productivity (GPP), the Total ecosystem Respiration (TeR) and the Net ecosystem exchange (Nee), and their responses to meteorological conditions (e.g. temperature, radiative flux and precipitation) at Lamto, in wet savannah region across C?te d’Ivoire are analyzed using GFeD-CASA and daily meteorological data recorded over the 2008-2015 period. The study shows the links between these carbon fluxes and climate variability at Lamto that is subject to high anthropogenic pressures and seasonal bushfires. The correlative statistics from multiple regression methods were used to assess the different relationships and show how they change in time. The results show important seasonal variability in the Gross Primary Productivity and the Total ecosystem Respiration mainly associated with the changes in temperature and radiative flux. In addition, the statistical analysis suggests a high correlation between meteorological conditions and the GPP and TeR. These climatic conditions may explain 83% and 79% of the variances of GPP and TeR respectively. Moreover, the interannual variability of the Net ecosystem exchange indicates that around Lamto, in the subhumid savannah, the ecosystem behaves as a carbon sink similar to other West African ecosystems. On the other hand, there is no clear link between the Nee and temperature, radiative flux and precipitation. This lack of connection may suggest a limited response of the Nee interannual dynamics related to the changes in climatic features.

关键词： Carbon Flux ecosystem Subhumid savannah Lamto Climatic Conditions Linear Models

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铁磷模拟HLW熔体的腐蚀性能

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无机材料学报 2000年第4期15卷 653-659页

作者：陈福义介万奇 Delbert e.Day 西北工业大学凝固技术国家重点实验室西安710072 密苏里大学陶瓷工程系罗拉mo654091170

在铁磷模拟ＨＬＷ熔体和硼硅酸盐熔体ＤＷＰＦ内测量了六种耐火材料的动态腐蚀速度，测量在１０００～１３００℃之间进行，在铁磷熔体中，致密氧化铝和氧化铬耐火材料有最低的熔线腐蚀速度，二氧化硅、锆英石和ＡＺＳ耐火材料的腐蚀... 详细信息

在铁磷模拟ＨＬＷ熔体和硼硅酸盐熔体ＤＷＰＦ内测量了六种耐火材料的动态腐蚀速度，测量在１０００～１３００℃之间进行，在铁磷熔体中，致密氧化铝和氧化铬耐火材料有最低的熔线腐蚀速度，二氧化硅、锆英石和ＡＺＳ耐火材料的腐蚀速度比较高．同时，氧化铝和氧化铬耐火材料在铁磷熔体中的腐蚀速度小于它们在硼硅酸盐熔体ＤＷＰＦ中的腐蚀速度．对氧化铬耐火材料来说，其在三种含有模拟ＨＬＷ废料的铁磷熔体中的熔线腐蚀速度＜０．１ｍｍ／ｄａｙ．可以认为商品制造的致密氧化铝和氧化铬耐火材料是可以用来熔化很多铁磷ＨＬＷ废料的，甚至可以熔化含有１６ｗｔ％氧化钠的ＨＬＷ废料．

关键词： HLW 耐火材料腐蚀模拟铁磷玻璃溶解玻璃化

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