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Chinese Chemical letters 2024年第2期35卷 558-563页

作者： Sheng Cai Xiao-Yuan Wu Weiming Wu sa-sa Wang Can-Zhong lu CAS key laboratory of Design and Assembly of Functional Nanostructures and Fujian Provincial Key Laboratory of NanomaterialsFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China College of Chemistry and Materials Science Fujian Normal UniversityFuzhou 350117China Xiamen Institute of Rare Earth Materials Chinese Academy of SciencesXiamen 361021China University of Chinese Academy of Sciences Beijing 100049China

Partial substitution of polyoxometalate(POM)is an efficient route to modulate the catalytic property of maternal *** this work,a new keggin type POM involving{Ni 6}cluster,{[Ni(H_(2)O)_(2)(Dach)_(2)][Ni(Dach)_(2)]_(2)}{[Ni_(6)Cl(μ-OH)_(3)(H_(2)O)(Dach)_(3)(WO_(4))(PW9 O_(3)_(4))][Ni_(6)(μ-OH)_(3)(H_(2)O)_(2)(Dach)_(3)(WO_(4))(PW9 O_(3)_(4))]}Cl·27H_(2)O,(1,Dach=1,2-diaminocyclohexane)was *** 1 shows excellent catalytic performance in the selective oxidation of aniline to azoxybenzene(AOB)in *** apparently different results from that with the matrix{PW_(9)O_(34)}({PW9})suggest the successful regulation of the catalytic property of{PW9}by the introduction of the{Ni6}cluster into the *** experimental results indicate that the highlighted performance of 1 is contributed by the synergy of W and Ni sites,which are respectively responsible for the oxidation and condensation steps in the production of *** good selectivity to AOB is essentially attributed to the effective modulation of the reaction rates of oxidation and condensation steps by W and Ni sites,respectively.

关键词： Polyoxometalate {Ni_(6)}cluster Modulated catalytic property Aniline oxidation Azoxybenzene

The first record of dermochelyid turtles in the Eocene of Tierra del Fuego:new insights on the evolution of the Weddellian faunas

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Advances in Polar Science 2024年第1期35卷 63-77页

作者： Paula BONA Juliana STERlI Marcelo saúl de la FUENTE Eduardo OlIVERO Marta S.FERNÁNDEZ Marcelo REGUERO División Paleontología Vertebrados Museo de La Plata-Anexo IIFacultad de Ciencias Naturales y MuseoUniversidad Nacional de La PlataLa Plata B1900FWAArgentina Consejo Nacional de Investigaciones Científicas y Técnicas(CONICET) Ciudad Autónoma de Buenos Aires C1425FQBArgentina Museo Paleontológico Egidio Feruglio Trelew U9100Argentina Instituto de Evolución Ecología Histórica y Ambiente-CONICETSan Rafael CP5600Argentina Centro Austral de Investigaciones Científicas-CONICET Universidad Nacional de Tierra del FuegoUshuaia CP 9410Argentina División Paleontología Vertebrados Museo de La PlataUniversidad Nacional de La PlataLa Plata B1900FWAArgentina

The Antarctic Paleogene marine fossil record has been the key to reconstructing the evolution of the Weddellian Sea and final dismemberment of Southern *** this context,Eocene marine vertebrates from Seymour(Marambio)Island have provided valuable *** present the first Eocene record of marine reptiles from the southern Atlantic Coast of South *** corresponds to several postcranial turtle remains represented by a proximal end of the right humerus,three caudal and one thoracic vertebrae,a fragment of the left pubis,and ten ossicles of the dorsal carapace,coming from the leticia Formation(late-mid Eocene)at Cabo Tiburones,Tierra del Fuego,*** materials show severalfeatures such as the size and general morphology of the humerus and vertebrae,and the presence of relatively small,irregular,smooth,and unkeeled ossicles,which allow us to assign them to Dermochelyidae *** are a cosmopolitan group ofcryptodiran turtles,registered from the late Cretaceous up to the recent,with some physiological-biological peculiarities(e.g.,endothermy and an exclusive jellyfish-based diet)and characterized by the presence of an osseous carapace formed by *** new finding from the leticia Formation is an addition to the scarce and extremely fragmentary record of Eocene dermochelyids from the southern seas like those from the la Meseta and Submeseta formations(Antarctica)and the Waihao and Burnside formations(New Zealand).This new information allows us to discuss the presence of these turtles in such high latitudes in the past and its implication in the evolution of the Weddellian fauna.

关键词： marine reptiles sea turtles Dermochelyidae Paleogene la Meseta Formation Submeseta Formation leticia Formation

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Bone marrow microRNA-34a is a good indicator for response to treatment in acute myeloid leukemia

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Oncology Research 2024年第3期32卷 577-584页

作者： MONA sa BDEllATEIF NAGlAA MHASsaN MAHMOUD MkAMEl YOMNA MEl-MElIGUI Department of Cancer Biology Medical Biochemistry and Molecular BiologyNational Cancer InstituteCairo UniversityCairo11976Egypt Department of Cinical Pathology National Cancer InstituteCairo UniversityCairo11976Egypt

Background:microRNA 34a(miR 34a)had been reported to have a diagnostic role in acute myeloid leukemia(AMl).However,its value in the bone marrow(BM)of AMl patients,in addition to its role in response to therapy is still *** current study was designed to assess the diagnostic,prognostic,and predictive significance of miR 34a in the BM of AMl ***:The miR.34a was assed in BM aspirate of 82 AMl patients in relation to 12 normal control subjects using *** data were assessed for correlation with the relevant dinical critenia,response to therapy,disease-free survival(DFS),and overall survival(OS)***:miR.34a was significantly downregulated in AMl patients[0.005(3.3×10^(-6)-1.32)],compared to the control subjects[0.108(3.2× 10^(-4)-1.64),p=0.021].*** relative quantification(RQ)of miR-34a was 0.106(range;0-32.12).The specifaity,sensitivity,and area under the curve(AUC)for the diagnosis of AMl were(58.3%,69.5%,0.707,respectively,p=0.021).patients with upregulated miR-34a showed decreased platelets countl,and achieved early complete remission(CR,p=0.031,p=0.044,respectively).Similarly,patients who were refractory to therapy showed decreased miR 34a levels in comparison to those who achieved CR[0.002(0-0.01)and 0.12(0-32.12),respectively,p=0.002].Therefore,miR 34a could significantly identify patients with CR with a specificity of 75%and sensitivity of 100%at a cut-off of 0.014(AUC=0.927,p=0.005).There was no considerable association between miR-34a expression and survival rates of the induded AMl ***:miR-34a could be a beneficial diagnostic biomarker for AMl *** addition,it serves as a good indicator for response to therapy,which could possibly identify patients who are refractory to treatment with 100%sensitivity and 75%specificity.

关键词： AMl miR 34a microRNA leukemia

Evaluating new biomarkers for diabetic nephropathy:Role ofα2-macroglobulin,podocalyxin,α-l-fucosidase,retinol-binding protein-4,and cystatin C

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World Journal of Diabetes 2024年第6期15卷 1212-1225页

作者： Jing-Jing li Ru-la sa Yu Zhang Zhao-li Yan Department of Infectious Diseases Inner Mongolia Medical UniversityHohhot First HospitalHohhot 010000Inner Mongolia Autonomous RegionChina Department of Endocrinology The Affiliated Hospital of Inner Mongolia Medical UniversityHohhot 010000Inner Mongolia Autonomous RegionChina Department of Dermatology Inner Mongolia Autonomous Region People’s HospitalHohhot 010000Inner Mongolia Autonomous RegionChina

BACkGROUND The intricate relationship between type 2 diabetes mellitus(T2DM)and diabetic nephropathy(DN)presents a challenge in understanding the significance of various biomarkers in *** To elucidate the roles and diagnostic values ofα2-macroglobulin(α2-MG),podocalyxin(PCX),α-l-fucosidase(AFU),retinol-binding protein-4(RBP-4),and cystatin C(CysC)in *** From December 2018 to December 2020,203 T2DM patients were enrolled in the *** these,115 were diagnosed with DN(115 patients),while the remaining 88 patients were classified as *** urinary levels ofα2-MG,PCX,and AFU and the serum concentrations RBP-4 and CysC were measured in conjunction with other relevant clinical indicators to evaluate their potential correlations and diagnostic *** After adjustments for age and gender,significant positive correlations were observed between the biomarkers CysC,RBP-4,α2-MG/urinary creatinine(UCr),PCX/UCr,and AFU/UCr,and clinical indicators such as urinary albumin-to-creatinine ratio(UACR),serum creatinine,urea,24-h total urine protein,and neutrophil-to-lymphocyte ratio(NlR).Conversely,these biomarkers exhibited negative correlations with the estimated glomerular filtration rate(Plysis further demonstrated the diagnostic performance of these biomarkers,with UACR showcasing the highest area under the ROC curve(AUC^(ROC))at *** This study underscores the diagnostic significance ofα2-MG,PCX,and AFU in the development of *** biomarkers RBP-4,CysC,PCX,AFU,andα2-MG provide promising diagnostic insights,while UACR is the most potent diagnostic biomarker in assessing DN.

关键词： α2-macroglobulin Podocalysin α-l-fucosidase Retinol binding protein-4 Cystatin C Diabetic nephropathy

BIERMER’s Disease: About 4 Cases Diagnosed at Regional University Hospital of Ouahigouya (Chur/Ohg) and literature Review

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Open Journal of Gastroenterology 2024年第9期14卷 322-329页

作者： Zanga Damien Ouattara Stève léonce Zoungrana saïdou santi Emeline Agathe Carama Fabien Dembele Bafima Désiré Diarra Alain Bougouma Department of Gastroenteroly Ouahigouya Regional University Hospital Ouahigouya Burkina Faso Department of Neurology Bogodogo University Hospital Ouagadougou Burkina Faso Department of Gastroenterology Yalgado Oudraogo University Hospital Center Ouagadougou Burkina Faso

Megaloblastic pernicious anemia is an autoimmune disorder, considered rare in African context. The objective of this study was to report four clinical cases collected at the CHUR/OHG, and to review the literature. The study population consisted of two men and two women. The clinical manifestations were mainly neurological and hematological. The neurological signs were mainly paresthesia. One patient presented memory problems. On the biological level, macrocytic anemia and vitamin B12 deficiency were reported in two cases prior to treatment while the other two without serological assay of vitamin B12 were put on trial treatment. Anti-intrinsic factor antibodies were positive in three patients. The Schilling test was not used. Upper gastrointestinal endoscopy revealed atrophic fundic gastritis in all four patients who received treatment through intramuscular injection of hydroxocobalamin (vitamin B12). The evolution was favorable after one month of treatment in all cases. The literature review is dominated by clinical case reports, the largest cohorts of which are from the Maghreb.

关键词： Anemia Pernicious Megaloblastic Vitamin B12

Impact of device resistances in the performance of graphene‑based terahertz photodetectors

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Frontiers of Optoelectronics 2024年第2期17卷 87-97页

作者： O.Castelló Sofía M.lópez Baptista k.Watanabe T.Taniguchi E.Diez J.E.Velázquez-Pérez Y.M.Meziani J.M.Caridad J.A.Delgado-Notario Department of Applied Physics University of Salamanca37008 SalamancaSpain Unidad de Excelencia en luz y Materia Estructurada(lUMES) University of Salamanca37008 SalamancaSpain Research Center for Electronic and Optical Materials National Institute for Materials Science1-1 NamikiTsukuba 305-0044Japan Research Center for Materials Nanoarchitectonics National Institute for Materials Science1-1 NamikiTsukuba 305-0044Japan Nanotechnology Group USAL-NanolabUniversity of Salamanca37008 SalamancaSpain

In recent years,graphene field-effect-transistors(GFETs)have demonstrated an outstanding potential for terahertz(THz)photodetection due to their fast response and *** features are essential to enable emerging THz applications,including 6G wireless communications,quantum information,bioimaging and ***,the overall performance of these photodetectors may be utterly compromised by the impact of internal resistances presented in the device,so-called access or parasitic *** this work,we provide a detailed study of the influence of internal device resistances in the photoresponse of high-mobility dual-gate GFET *** dual-gate architectures allow us to fine tune(decrease)the internal resistance of the device by an order of magnitude and consequently demonstrate an improved responsivity and noise-equivalent-power values of the photodetector,*** results can be well understood by a series resistance model,as shown by the excellent agreement found between the experimental data and theoretical *** findings are therefore relevant to understand and improve the overall performance of existing high-mobility graphene photodetectors.

关键词： Graphene THz Photodetector Field-effect transistor Plasmonic

从《沈阳百咏》探析光绪初年盛京城人居文化景观

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风景园林 2024年第6期31卷 133-139页

作者：谢淼伊娜王飒沈阳建筑大学建筑与规划学院沈阳建筑大学辽宁省区域建筑学与寒地人居科学重点实验室

【目的】从人居环境学的角度,探究在清末外部变化影响下仍是帝国陪都的盛京城内文化景观和城市空间变化,以填补盛京城清末文化景观研究的不足。【方法】以《沈阳百咏》为依据,运用文本挖掘语义分析、时间地理学分析、历史地理空间分析... 详细信息

【目的】从人居环境学的角度,探究在清末外部变化影响下仍是帝国陪都的盛京城内文化景观和城市空间变化,以填补盛京城清末文化景观研究的不足。【方法】以《沈阳百咏》为依据,运用文本挖掘语义分析、时间地理学分析、历史地理空间分析量化光绪初年盛京城人居文化景观类型和时空信息,探讨文化景观的分布规律,并通过对比清朝前、中、末期城市空间,总结光绪初年盛京城的风貌特点。【结果】将盛京城人居文化景观归纳为“游憩玩赏”“盛京旧制”“市井生活”“信俗集会”4个一级分类及15个二级分类,发现文化景观类型与季节农时有强关联,不同文化景观在地理空间分布上有显著差异,整体上集中于关厢地带,城北景观密度高于城南。通过将《沈阳百咏》中城市空间与清前、中期城市空间对比发现,光绪初年盛京城已成为有满族特色的地方中心性城市。【结论】对《沈阳百咏》的深入挖掘填补了清末盛京城文化景观研究的缺环,为清代盛京城研究提供新思路,同时也为后续通过诗文分析盛京城文化景观格局提供了参考。

关键词：文化景观人居环境学诗词文本挖掘时空结构清代盛京城

local Criteria Used by Farmers to Evaluate the Agronomic Performance and the Fertilizing Capacity of Cowpea Varieties: Diversity, Variability and Proximal Relation with Agronomic Measurements in Contrasted sahelian locations

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Agricultural Sciences 2024年第1期15卷 114-131页

作者： Nouhou salifou Jangorzo Abdoul-Aziz saïdou Abou-Soufianou sadda Abdoulaye Moussa Mamoudou Hassane Bil-Assanou Issoufou Département des Sciences du Sol et Télédétection Université Dan Dicko Dankoulodo de Maradi Maradi Niger. Unité Mixte de Recherche “Diversité et Adaptation des Plantes” (UMR DAP) Université Dan Dicko Dankoulodo de Maradi Maradi Niger Centre Imaan de Support en Recherche Transdisciplinaire (Imaan Research) Niamey Niger Institut de Recherche pour le Développement Niamey Niger Université Boubacar BA de Tillabéri Tillabéri Niger Département des Sciences et Techniques de Productions Végétales Université Dan Dicko Dankoulodo de Maradi Maradi Niger

When contributing to participatory research, farmers usually appreciate the performance of cowpea varieties using qualitative scores. The score they attribute to each variety are based on local knowledge. The specific criteria they individually use to attribute a score are not well described. The objectives of this work were to: 1) identify and describe exhaustively the local criteria used by farmers to measure the agronomic performance of cowpea;2) assess the variability and statistical structure of these farmer criteria across local contexts;3) and analyze the association between these farmer criteria and the classical agronomic measurement. To achieve these objectives, an augmented block design was implemented across fifteen locations in the regions of Maradi, Dosso and Tillabéri, representing a diversity of local contexts. From a set of 36 cowpea varieties, fifteen varieties were sown per location, including five varieties (controls) common to all locations. In each location, two replicates were sown in randomized Fisher’s blocks. After agronomic measurement and participatory evaluation (scoring of varieties by farmers), a group survey (focus group) was conducted in each location to identify the criteria considered by farmers to found their discretional scoring of varieties during the participatory evaluation. The analysis of the data identified, across locations, thirteen criteria defined by farmers to characterize the agronomic performance of cowpea. Some of these criteria were different according to location. Farmers ranked the three varieties with the best performance for each agronomical trait (Top 3 varieties). A comparison of the farmer ranking with the ranking based on agronomic measurements revealed similarity and complementary between both methods. This study highlighted the importance of considering both local and scientific knowledge in local varietal evaluations.

关键词： Agronomic Performance Participatory Research Cowpea Farmers’ Criteria

Modeling the Spatio-Temporal Dynamics of local Context for a Contextualized Diffusion of Agroecological Intensification Options in Niger

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International Journal of Geosciences 2024年第3期15卷 270-301页

作者： Nouhou salifou Jangorzo Maud loireau Abou-Souﬁanou sadda Ousmane sami Mari Abdoul-Aziz saïdou Hassane Bil-Assanou Issoufou Département des Sciences du Sol et Télédétection Université Dan Dicko Dankoulodo de Maradi UMR DAP Maradi Niger Unité mixte de Recherche Diversité et Adaptation des Plantes (UMR DAP) Université Dan Dicko Dankoulodo de Maradi Maradi Niger Institut de Recherche pour le Développement UMR Espace-DEV Université de Perpignan Via Domitia (UPVD) Perpignan France Institut de Recherche pour le Développement Représentation Niamey Niger Centre Imaan de Support en Recherche Transdisciplinaire UMR DAP/UDDM Niamey Niger Département des Sciences et Techniques de Productions Végétales Université Dan Dicko Dankoulodo de Maradi UMR DAP Maradi Niger

Spatio-temporal variability and dynamics in sahelian agro-pastoral zones make each local situation a special case. These specificities must be considered to guide the dissemination of agricultural options with a view to sustainable development. The territorial scale of municipalities is not sufficient for this necessary contextualization;the scale of the “village terroir” seems to be a better option. This is the hypothesis we put forward in the framework of the Global Collaboration for Resilient Food Systems program (CRFS), i.e. local context is spatially defined by village terroir. The study is based on data collected through participatory mapping and surveys in “village terroirs” in three regions of Niger (Maradi, Dosso and Tillabéri). Then the links between farm managers and their cultivated land, as well as the spatio-temporal dynamics of local context are analyzed. This study provides evidence of the existence and functional usefulness of the village terroir for farmers, their land management and their activities. It demonstrates the usefulness of contextualizing agricultural options at this scale. Their analysis elucidates the links between “terroirs village” and the specific functioning of the agrosocio-ecosystems acting on each of them, thus laying the systemic and geographical foundations for a model of the spatio- temporal dynamics of “village terroirs”. This initial work has opened up new perspectives in modeling and sustainable development.

关键词： Niger Option by Context local Condition Complex System Multiscale Conceptual Modeling

POSITIVE SOlUTIONS FOR SINGUlAR BVPs ON THE POSITIVE HAlF-lINE ARISING FROM EPIDEMIOlOGY AND COMBUSTION THEORY

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Acta Mathematica Scientia 2012年第2期32卷 672-694页

作者： Smaïl Djebali Ouiza saïfi 闫宝强 Department of Mathematics E.N.S.P.O.Box 9216050 Kouba.AlgiersAlgeria Department of Economics Faculty of Economic and Management SciencesAlgiers UniversityAlgeria Department of Mathematics Shandong Normal University

In this work, we are concerned with the existence and multiplicity of positive solutions for singular boundary value problems on the half-line. Two problems from epi- demiology and combustion theory set on the positive half-line are investigated upper and lower solution techniques combined with fixed point index on cones in priate Banach spaces. The results complement recent ones in the literature. We use appropriate Banach spaces. The results complement recent ones in the literature.

关键词： Fixed points index positive solution singular problem cone lower andupper solution half-line