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Removal of As(V)in the presence of Cr(VI)in contaminated water from the Bajio region of Mexico using ferrihydrite-functionalized graphene oxide(GOFH):A case study

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Emerging Contaminants 2024年第3期10卷 134-144页

作者： D.R.joya-Cardenas j.P.Rodríguez-Caicedo M.A.Corona-Rivera n.Saldana-Robles C.E.Damian-Ascencio A.Saldana-Robles Graduate Program in Biosciences University of GuanajuatoIrapuato36500Mexico Facultad de Ingenierías y Tecnologías Instituto XeriraUniversidad de SantanderBucaramanga680003Colombia Chemical Engineering Unit Academic Multidisciplinary Region Altiplano UAMRA.Autonomous University of San Luis PotosíMatehualaSan Luis Potosí78000Mexico Department of Agricultural Engineering University of GuanajuatoIrapuato36500Mexico Department of Mechanical Engineering University of GuanajuatoSalamanca36800Mexico Mechanical Engineering Department Virginia TechBlacksburgVA24061USA

The presence of heavy metals such as arsenic(As)and chromium(Cr)can be considered one of the most toxic heavy *** study aims to develop and evaluate a graphene oxide(GO)based material functionalized with ferrihydrite for the removal of As(V)in the presence of Cr(VI).The adsorbent ferrihydrite-functionalized graphene oxide(GOFH)was characterized by SEM,FTIR,XRD,XPS,surface charge,BET and *** adsorption capacities for As(V)and Cr(VI)were 160 and 66 mg g^(-1)respectively at pH 4 and 298 K,fitting the Langmuir *** binary systems,GOFH adsorbed As(V)with an adsorption capacity of 137 mg g^(-1)in the presence of 20 mg L^(-1)Cr(VI)at room *** analysis revealed an exothermic and spontaneous ***,GOFH effectively removed several coexisting anions from groundwater,including SO_(4)^(2-),CO_(3)^(2-)and Cl^(-).This work evidences the potential of GOFH for competitive adsorption of priority pollutants from complex *** GOFH material represents a technically and economically viable technology for application in groundwater decontamination,as it requires inexpensive precursors and ambient conditions during synthesis and operation.

关键词： Competition Ions Contamination Groundwater Adsorption capacity

青藏高原及其周边奥陶纪综合地层、生物群与古地理演化

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中国科学：地球科学 2024年第4期54卷 992-1025页

作者：方翔甄勇毅王光旭魏鑫陈中阳梁艳武学进李文杰李超詹仁斌张元动现代古生物学和地层学国家重点实验室中国科学院南京地质古生物研究所南京210008 Geological Survey of new South wales W.B.Clarke Geoscience CentreNSW 2753Australia 中国科学院大学北京100049

青藏高原奥陶系代表该地区未变质沉积地层的最古老记录,是解读该地区早期地质历史和生物演化的关键层段.青藏高原地区奥陶系底部地层存在不同程度的缺失,但具有下奥陶统弗洛阶、中奥陶统达瑞威尔阶,以及上奥陶统桑比阶、凯迪阶和赫南特... 详细信息

青藏高原奥陶系代表该地区未变质沉积地层的最古老记录,是解读该地区早期地质历史和生物演化的关键层段.青藏高原地区奥陶系底部地层存在不同程度的缺失,但具有下奥陶统弗洛阶、中奥陶统达瑞威尔阶,以及上奥陶统桑比阶、凯迪阶和赫南特阶,可划分为喜马拉雅、冈底斯-察隅、羌塘-昌都、松潘-甘孜、喀喇昆仑-昆仑-阿尔金等地层区,并可与周边的滇缅马、印支、柴达木-祁连、塔里木-天山和扬子区(西缘)等地层区进行综合地层对比.笔石、牙形刺和头足类是青藏高原地区奥陶系最常见的、据以构建该地区生物地层框架的化石门类.青藏高原奥陶纪生物群具有鲜明的生物古地理区系特色,其中头足类在早-中奥陶世以珠角石类繁盛为特征,显示与华北板块具有密切亲缘关系,但到晚奥陶世则以喇叭角石和直角石类繁盛为特征,表现出与华南的密切关系.青藏高原的奥陶纪多门类动物群及其生物古地理演化,为冈瓦纳东北缘地区的奥陶纪古板块重建提供了重要依据.西藏南部喜马拉雅地体、拉萨地体及周边的滇缅马地体在寒武纪晚期-奥陶纪早期经历了库尔加克运动,这次影响深远的构造热事件造成了奥陶纪地层与下伏基底地层之间的角度不整合接触关系,这一间断面在青藏高原大部分地区存在.西藏南部中奥陶统发育鲕粒灰岩和暖水生物群,指示当时位于赤道附近的低纬度地带.喜马拉雅地体及滇缅马地体的上奥陶统普遍发育大套具有网纹结构的海相碳酸盐岩红层,可与华南扬子区的同期地层进行对比,二者可能具有相同或相似的成因背景.奥陶纪末全球性冰期与海平面下降事件也造成了滇西和缅甸掸邦等地区普遍缺失凯迪晚期地层,对青藏高原的申扎和聂拉木等地区也有较大影响.

关键词：奥陶系年代地层岩石地层生物地层生物古地理生物和地质事件

Low-Cost and Biodegradable Thermoelectric Devices Based on van der waals Semiconductors on Paper Substrates

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Energy & Environmental Materials 2024年第1期7卷 201-206页

作者： Gulsum Ersu Carmen Munuera Federico j.Mompean Daniel Vaquero jorge Quereda joão Elias F.S.Rodrigues jose A.Alonso Eduardo Flores jose R.Ares Isabel j.Ferrer Abdullah M.Al-Enizi Ayman nafady Sruthi Kuriakose joshua O.Island Andres Castellanos-Gomez Materials Science Factory Instituto de Ciencia de Materiales de Madrid(ICMM-CSIC)Madrid E-28049Spain nanotechnology Group USAL-NanolabUnivesidad de SalamancaSalamanca Junta de Castilla y León 37007Spain GISC Departamento de Física de MaterialesUniversidad Complutense de MadridMadrid E-28040Spain Departamento de Física Aplicada Centro de Investigación y Estudios AvanzadosMérida 97310Mexico MIRE Group Departamento de Física de MaterialesUniversidad Autónoma de MadridMadrid E-28049Spain Instituto nicolás Cabrera Universidad Autónoma de MadridMadrid E-28049Spain Department of Chemistry College of ScienceKing Saud UniversityRiyadh 11451Saudi Arabia Department of Physics and Astronomy University of Nevada Las VegasLas Vegas NV 89154USA

we present a method to fabricate handcrafted thermoelectric devices on standard office paper *** devices are based on thin films of wS_(2),Te,and BP(P-type semiconductors)and TiS_(3)and TiS_(2)(n-type semiconductors),deposited by simply rubbing powder of these materials against *** thermoelectric properties of these semiconducting films revealed maximum Seebeck coefficients of(+1.32±0.27)mV K^(-1)and(-0.82±0.15)mV K^(-1)for wS_(2)and TiS_(3),***,Peltier elements were fabricated by interconnecting the P-and n-type films with graphite electrodes.A thermopower value up to 6.11 mV K^(-1)was obtained when the Peltier element were constructed with three *** findings of this work show proof-of-concept devices to illustrate the potential application of semiconducting van der waals materials in future thermoelectric power generation as well as temperature sensing for low-cost disposable electronic devices.

关键词： paper-based electronics Seebeck effect semiconductors thermoelectrics van der waals materials

Enabling Technologies for Autonomous Robotic Systems in Manufacturing

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Transactions of nanjing University of Aeronautics and Astronautics 2024年第4期41卷 403-431页

作者： ERDŐS Gábor ABAI Kristóf BEREGI Richárd CSEMPESZ jános CSERTEG Tamás GODÓGábor HAjÓS Mátyás HÁy Borbála HORVÁTH Dániel HORVÁTH Gergely jUnIKIÁdám KEMÉny Zsolt KOVÁCS András nACSA jános PAnITI Imre PEDOnE Gianfranco TAKÁCS Emma TIPARy Bence ZAHORÁn László VÁnCZA józsef Institute for Computer Science and Control Hungarian Research Network(HUN-REN SZTAKI)BudapestHungary Department of Manufacturing Science and Technology Budapest University of Technology and Economics(BME)BudapestHungary EPIC InnoLabs nonprofit Ltd. BudapestHungary Eötvös Loránd University(ELTE) BudapestHungary

Research of autonomous manufacturing systems is motivated both by the new technical possibilities of cyber-physical systems and by the practical needs of the *** operation in semi-structured industrial environments can now be supported by advanced sensor technologies,digital twins,artificial intelligence and novel communication *** enable real-time monitoring of production processes,situation recognition and prediction,automated and adaptive(re)planning,teamwork and performance improvement by *** paper summarizes the main requirements towards autonomous industrial robotics and suggests a generic workflow for realizing such *** case studies will be presented from recent practice at HUn-REn SZTAKI in a broad range of domains such as assembly,welding,grinding,picking and placing,and *** various solutions have in common that they use a generic digital twin concept as their *** making general recommendations for realizing autonomous robotic solutions in the industry,open issues for future research will be discussed.

关键词： industrial robotics autonomy digital twin enabling technology

BMSC-derived Exosomes Ameliorate Peritoneal Dialysis-associated Peritoneal Fibrosis via the Mir-27a-3p/TP53 Pathway

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Current Medical Science 2024年第2期44卷 333-345页

作者： jun-li ZHAO Lin ZHAO Qiu-nan zhan Miao LIU Ting zhanG wen-wen CHU Department of nephrology Shanghai University of Medicine&Health Sciences Affiliated Zhoupu HospitalShanghai 201318China Orthopedic Department Guangming Traditional Chinese Medicine Hospital of Pudong New AreaShanghai 201399China

Objective:Peritoneal fibrosis(PF)is the main cause of declining efficiency and ultrafiltration failure of the peritoneum,which restricts the long-term application of peritoneal dialysis(PD).This study aimed to investigate the therapeutic effects and mechanisms of bone marrow mesenchymal stem cells-derived exosomes(BMSC-Exos)on PF in response to ***:Small RnA sequencing analysis of BMSC-Exos was performed by second-generation sequencing.C57BL/6j mice were infused with 4.25%glucose-based peritoneal dialysis fluid(PDF)for 6 consecutive weeks to establish a PF model.A total of 36 mice were randomly divided into 6 groups:control group,1.5%PDF group,2.5%PDF group,4.25%PDF group,BMSC-Exos treatment group,and BMSC-Exos+TP53 treatment *** transcription quantitative polymerase chain reaction(RT-qPCR)was performed to measure the expression level of miR-27a-3p in BMSC-Exos and peritoneum of mice treated with different concentrations of *** and Masson staining were performed to evaluate the extent of *** therapeutic potential of BMSC-Exos for PF was examined through pathological examination,RT-qPCR,western blotting,and peritoneal function ***-mesenchymal transition(EMT)of HMrSV5 was induced with 4.25%*** were divided into control group,4.25%PDF group,BMSC-Exos treatment group,and BMSC-Exos+TP53 treatment *** Counting Kit-8 assay was used to measure cell viability,and transwell migration assay was used to verify the capacity of BMSC-Exos to inhibit EMT in HMrSV5 ***:Small RnA sequencing analysis showed that miR-27a-3p was highly expressed in BMSC-derived exosomes compared to *** RT-qPCR results showed that the expression of miR-27a-3p was upregulated in BMSC-Exos,but decreased in PD *** found that PF was glucose concentration-dependently enhanced in the peritoneum of the PD *** with the control mice,the PD mice showed high solute transport and decreased ultrafiltration volume as well as an obvious f

关键词： peritoneal fibrosis bone marrow mesenchymal stem cell-derived exosomes miR-27a-3p TP53 epithelialmesenchymal transition

Recent Ventures in Interdisciplinary Arctic Research:The ARCPATH Project

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Advances in Atmospheric Sciences 2024年第8期41卷 1559-1568页

作者： Astrid E.j.OGILVIE Leslie A.KInG noel KEEnLySIDE François COUnILLOn Brynhildur DAVIÐSDÓTTIR níels EInARSSOn Sergey GULEV Ke FAn Torben KOEnIGK james R.MCGOODwIn Marianne H.RASMUSSOn Shuting yAnG Institute of Arctic and Alpine Research(InSTAAR) University of ColoradoBoulder CO 80303USA Stefansson Arctic Institute AkureyriÍS-600Iceland Royal Roads University BC V9B 5Y2Canada University of Bergen Bergen N-5007Norway nansen Environmental and Remote Sensing Centre Bergen N-5007Norway University of Iceland Reykjavík 102Iceland Shirshov Institute of Oceanology Moscow 117218Russia Moscow State University Moscow 11991Russia Chinese Academy of Sciences Beijing 100045China Swedish Meteorological and Hydrological Institute SE-60176 NorrköpingSweden Danish Meteorological Institute CopenhagenØ2100Denmark Obukhov Institute of Atmospheric Physics RAS119017MoscowRussia

This paper celebrates Professor yongqi GAO's significant achievement in the field of interdisciplinary studies within the context of his final research project Arctic Climate Predictions: Pathways to Resilient Sustainable Societies-ARCPATH(https://***/en/projects/finished-projects/arcpath). The disciplines represented in the project are related to climatology, anthropology, marine biology, economics, and the broad spectrum of social-ecological studies. Team members were drawn from the nordic countries, Russia, China, the United States, and Canada. The project was transdisciplinary as well as interdisciplinary as it included collaboration with local knowledge holders. ARCPATH made significant contributions to Arctic research through an improved understanding of the mechanisms that drive climate variability in the Arctic. In tandem with this research, a combination of historical investigations and social, economic, and marine biological fieldwork was carried out for the project study areas of Iceland, Greenland, norway, and the surrounding seas, with a focus on the joint use of ocean and sea-ice data as well as social-ecological drivers. ARCPATH was able to provide an improved framework for predicting the near-term variation of Arctic climate on spatial scales relevant to society, as well as evaluating possible related changes in socioeconomic realms. In summary, through the integration of information from several different disciplines and research approaches, ARCPATH served to create new and valuable knowledge on crucial issues, thus providing new pathways to action for Arctic communities.

关键词： Recent Ventures in Interdisciplinary Arctic Research:The ARCPATH Project

Single atom Cu-n-C catalysts for the electro-reduction of CO_(2) to CO assessed by rotating ring-disc electrode

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journal of Energy Chemistry 2024年第1期88卷 169-182,I0004页

作者： S.Pérez-Rodríguez M.Gutiérrez-Roa C.Giménez-Rubio D.Ríos-Ruiz P.Arévalo-Cid M.V.Martínez-Huerta A.Zitolo M.j.Lázaro D.Sebastián Instituto de Carboquímica(CSIC) Miguel Luesma Castán 450018 ZaragozaSpain Instituto de Catálisis y Petroleoquímica(CSIC) Marie Curie 228049 MadridSpain Synchrotron SOLEIL L’Orme des MerisiersDépartementale 12891190France

The electrochemical CO_(2) reduction reaction(CO_(2)RR) to controllable chemicals is considered as a promising pathway to store intermittent renewable energy. Herein, a set of catalysts based on copper-nitrogendoped carbon xerogel(Cu-n-C) are successfully developed varying the copper amount and the nature of the copper precursor, for the efficient CO_(2)RR. The electrocatalytic performance of Cu-n-C materials is assessed by a rotating ring-disc electrode(RRDE), technique still rarely explored for CO_(2)RR. For comparison, products are also characterized by online gas chromatography in a H-cell. The as-synthesized Cu-nC catalysts are found to be active and highly CO selective at low overpotentials(from -0.6 to -0.8 V ***) in 0.1 M KHCO_(3), while H_(2) from the competitive water reduction appears at larger overpotentials(-0.9 V vs. RHE). The optimum copper acetate-derived catalyst containing Cu-n_(4) moieties exhibits a CO_(2)-to-CO turnover frequency of 997 h^(-1) at -0.9 V vs. RHE with a H_(2)/CO ratio of 1.8. These results demonstrate that RRDE configuration can be used as a feasible approach for identifying electrolysis products from CO_(2)RR.

关键词： Cu-n-C Carbon xerogel Rotating ring disc electrode Carbon dioxide reduction reaction Carbon monoxide

Blood Pressure Profile and Glycemic Control of Type 2 Diabetics and Hypertensives at the yalgado Ouedraogo University Hospital: A Review of 116 Cases

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world journal of Cardiovascular Diseases 2024年第1期14卷 61-76页

作者： G. R. C. Millogo A. Thiam y. Kambiré E. nongkouni S. E. Dabiré L. j. Kagambéga j. K. Kologo V. n. yaméogo P. Zabsonré Department of Cardiology Yalgado Ouédraogo University Hospital Ouagadougou Burkina Faso Department of Cardiology Tengandogo University Hospital Ouagadougou Burkina Faso

Objective: The association hypertension and diabetes is important. The two pathologies may influence each other. The aim was to study the correlation between glycemic control and blood pressure control and to determine the factors associated with blood pressure control. Methodology: This was a descriptive cross-sectional study with an analytical focus over 7 months. Patients were recruited as outpatients and all underwent ambulatory blood pressure measure, glycated hemoglobin and creatinine measurements, and assessment of compliance with treatment. Results: During this period 116 patients were collected. The predominance was female 69%. The mean age of the patients was 62 ± 7 years with a peak between 60 and 70 years. The average age of hypertension was 12 years and that of diabetes 6 1/2 years. The most frequently associated cardiovascular risk factor was a sedentary lifestyle (71.5%) after age. 57.8% of patients were not controlled at the office, with a predominance of systolic hypertension (58.2%). 61.6% of patients were controlled by ambulatory blood pressure measure, a rate of 47.8% of white coat hypertension. Glycemic control was observed in 42.2% of cases and 87% of patients had good renal function (glomerular filter rate ≥ 60 ml/mn). Therapeutic compliance was good in 53.4% of cases and dual therapy was the most used therapeutic modality 44.8% (52 patients) followed by triple therapy. The factors associated with poor blood pressure control were glycemic imbalance, non-compliance and monotherapy. Dual therapy had a protective effect. Conclusion: The association of hypertension and type 2 diabetes is frequent. The risk of occurrence increases with age. Ambulatory blood pressure measure is the best method to assess blood pressure control. Optimization of blood pressure control should also include optimization of glycemic control.

关键词： Blood Pressure Control Glycemic Control Hypertensive and Diabetic Patients

Structure-based design and optimization lead to the identification of novel dihydrothiopyrano[3,2-d]pyrimidine derivatives as potent HIV-1 inhibitors against drug-resistant variants

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Acta Pharmaceutica Sinica B 2024年第3期14卷 1257-1282页

作者： Zhao wang Heng zhang Zhen Gao Zihao Sang Erik De Clercq Christophe Pannecouque Dongwei Kang Peng zhan Xinyong Liu Department of Medicinal Chemistry Key Laboratory of Chemical Biology(Ministry of Education)School of Pharmaceutical SciencesCheeloo College of MedicineShandong UniversityJinan 250012China Rega Institute for Medical Research Laboratory of Virology and ChemotherapyK.U.LeuvenLeuven B-3000Belgium China-Belgium Collaborative Research Center for Innovative Antiviral Drugs of Shandong Province Jinan 250012China Suzhou Research Institute Shandong UniversitySuzhou 215123China

with our continuous endeavors in seeking potent anti-HIV-1 agents,we reported here the discovery,biological characterization,and druggability evaluation of a class of nonnucleoside reverse transcriptase *** fully explore the chemical space of the nnRTI-binding pocket,novel series of dihydrothiopyrano[3,2-d]pyrimidines were developed by employing the structure-based design *** of the derivatives were endowed with prominent antiviral activities against HIV-1 wild-type and resistant strains at nanomolar *** them,compound 23h featuring the aminopiperidine moiety was identified as the most potent inhibitor,with EC50values ranging from 3.43 to 21.4 nmol/***,for the challenging double-mutants F227L+V106A and K103n+y181C,23h exhibited 2.3-to 14.5-fold more potent activity than the first-line drugs efavirenz and ***,the resistance profiles of 23h achieved remarkable improvement compared to efavirenz and *** binding target of 23h was further confirmed to be HIV-1 reverse *** modeling studies were also performed to elucidate the biological evaluation results and give guidance for the optimization ***,no apparent inhibition of the major CyP450 enzymes and hERG channel was observed for *** importantly,23h was characterized by good pharmacokinetic properties and excellent safety in ***,23h holds great promise as a potential candidate for its effective antiviral efficacy and favorable drug-like profiles.

关键词： HIV-1 Reverse transcriptase Dihydrothiopyrano[3,2-d]pyrimidine Antiviral agent