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Hydrocarbon indication in Rio Bonito Formation sandstone:Implication for Co_(2)storage in São Paulo,Brazil

Energy Geoscience 2024年第1期5卷 331-341页

作者： Richardson M.Abraham-A Haline V.Rocha Saulo B.de oliveira Colombo C.G.Tassinarri orlando C.da Silva Institute of Energy and Environment University of São PauloSão PauloBrazil Research Centre for Greenhouse Gas Innovation University of São PauloSão PauloBrazil

São Paulo State has witnessed Co_(2)storage-based investigations considering the availability of suitable geologic structures and proximity to primary Co_(2)source sinks related to bioenergy and carbon capture and storage(BECCS)*** current study presents the hydrocarbon viability evaluations and Co_(2)storage prospects,focusing on the sandstone units of the Rio Bonito *** objective is to apply petrophysical evaluations with geochemical inputs in predicting future hydrocarbon(gas)production to boost Co_(2)storage within the study *** study used data from eleven wells with associated wireline logs(gamma ray,resistivity,density,neutron,and sonic)to predict potential hydrocarbon accumulation and fluid mobility in the investigated *** samples(shale and carbonate)obtained from depths>200 m within the study location have shown bitumen *** geochemistry data of the Rio Bonito Formation shale beds suggest they are potential hydrocarbon source rocks and could have contributed to the gas accumulations within the sandstone *** drilled well data,e.g.,CB-1-SP and TI-1-SP,show hydrocarbon(gas)presence based on the typical resistivity and the combined neutron-density responses at depths up to 3400 m,indicating the possibility of other hydrocarbon members apart from the heavy oil(bitumen)observed from the near-surface rocks *** the three-dimensional(3-D)model,the free fluid indicator(FFI)is more significant towards the southwest and southeast of the area with deeper depths of occurrence,indicating portions with reasonable hydrocarbon recovery rates and good prospects for Co_(2)injection,circulation and permanent ***,future studies based on contemporary datasets are required to establish the hydrocarbon viability further,foster gas production events,and enhance Co_(2)storage possibilities within the region.

关键词： ParanáBasin Hydrocarbon indication Sandstone reservoirs Rio Bonito Formation Co_(2)storage Hydrocarbon recovery factor Fluid injection rate

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High-speed performance self-powered short wave ultraviolet radiation detectors based onκ(ε)-Ga_(2)o_(3)

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Journal of Semiconductors 2024年第4期45卷 56-62页

作者： Aleksei Almaev Alexander Tsymbalov Bogdan Kushnarev Vladimir Nikolaev Alexei Pechnikov Mikhail Scheglov Andrei Chikiryaka Petr Korusenko Research and Development Center for Advanced Technologies in Microelectronics National Research Tomsk State UniversityTomsk 634050Russia Fokon LLC Kaluga 248035Russia Department of Semiconductor Electronics and Physics of Semiconductors National University of Science and Technology MISISMoscow 119049Russia Perfect Crystals LLC Saint Petersburg 194223Russia Department of Solid-State Electronics Saint Petersburg State UniversitySaint Petersburg 199034Russia Department of Physics Omsk State Technical UniversityOmsk 644050Russia

High-speed solar-blind short wavelength ultraviolet radiation detectors based onκ(ε)-Ga_(2)o_(3)layers with Pt contacts were demonstrated and their properties were studied in ***κ(ε)-Ga_(2)o_(3)layers were deposited by the halide vapor phase epitaxy on patterned GaN templates with sapphire *** spectral dependencies of the photoelectric properties of struc-tures were analyzed in the wavelength interval 200-370 *** maximum photo to dark current ratio,responsivity,detectiv-ity and external quantum efficiency of structures were determined as:180.86 ***.,3.57 A/W,1.78×10^(12) Hz^(0.5)∙cm·W^(-1) and 2193.6%,respectively,at a wavelength of 200 nm and an applied voltage of 1 *** enhancement of the photoresponse was caused by the decrease in the Schottky barrier at the Pt/κ(ε)-Ga_(2)o_(3)interface under ultraviolet *** detectors demon-strated could functionalize in self-powered mode due to built-in electric field at the Pt/κ(ε)-Ga_(2)o_(3)*** responsivity and external quantum efficiency of the structures at a wavelength of 254 nm and zero applied voltage were 0.9 mA/W and 0.46%,*** rise and decay times in self-powered mode did not exceed 100 ms.

关键词： κ(ε)-gallium oxide solar-blind shortwave ultraviolet radiation detectors self-powered operation mode

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High-temperature corrosion of sintered RE_(2)Si_(2)o_(7)(RE=Yb and Ho)environmental barrier coating materials by volcanic ash

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International Journal of Minerals,Metallurgy and Materials 2024年第7期31卷 1628-1638页

作者： Ayahisa okawa Son Thanh Nguyen Tadachika Nakayama Thi-Mai-Dung Do Hisayuki Suematsu Shu Yin Takuya Hasegawa Tsuneo Suzuki Takashi Goto Koichi Niihara Institute of Multidisciplinary Research for Advanced Materials Tohoku UniversitySendai 980-8577Japan Department of Creative Engineering National Institute of TechnologyKushiro 084-0916Japan Extreme Energy-Density Research Institute Nagaoka University of TechnologyNagaoka 940-2188Japan Advanced Institute for Materials Research(WPI-AIMR) Tohoku UniversitySendai 980-8577Japan

Rare-earth silicates are promising environmental barrier coatings(EBCs)that can protect SiC_(f)/Si C_(m)substrates in next-genera tion gas turbine ***,RE_(2)Si_(2)o_(7)(RE=Yb and Ho)shows potential as an EBC due to its coefficient of thermal expansion(CTE)compatible with substrates and high resistance to water vapor *** target operating temperature for next-generation tur bine blades is 1400°*** is inevitable during adhesion to molten volcanic ash,and thus,understanding the corrosion behavior o the material is crucial to its *** study investigates the high-temperature corrosion behavior of sintered RE_(2)Si_(2)o_(7)(RE=Yb and Ho).Samples were prepared using a solid-state reaction and hot-press *** were then exposed to volcanic ash at 1400°C for 224,and 48 *** 48 h of exposure,volcanic ash did not react with Yb_(2)Si_(2)o_(7)but penetrated its interior,causing *** Ho_(2)Si_(2)o_(7)was partially dissolved in the molten volcanic ash,forming a reaction zone that prevented volcanic ash melts from penetrating the *** increasing heat treatment time,the reaction zone expanded,and the thickness of the acicular apatite grains increased The Ca:Si ratios in the residual volcanic ash were mostly unchanged for Yb_(2)Si_(2)o_(7)but decreased considerably over time for Ho_(2)Si_(2)o_(7).Th Ca in volcanic ash was consumed and formed apatite,indicating that RE^(3+)ions with large ionic radii(Ho>Yb)easily precipitated apatit from the volcanic ash.

关键词： environmental barrier coating volcanic ash rare-earth disilicate corrosion

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The initial stages of Li_(2)o_(2) formation during oxygen reduction reaction in Li-o_(2) batteries:The significance of Li_(2)o_(2) in charge-transfer reactions within devices

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Journal of Energy Chemistry 2024年第1期88卷 223-231,I0006页

作者： Daniela M.Josepetti Bianca P.Sousa Simone A.J.Rodrigues Renato G.Freitas Gustavo Doubek Advanced Energy Storage Division LABCenter for Innovation on New EnergiesSchool of Chemical EngineeringUniversity of CampinasAv Albert Einstein 50013083-852CampinasSPBrazil Institute of Physics&Department of Chemistry Laboratory of Computational MaterialsFederal University of Mato Grosso78060-900CuiabáMTBrazil

Lithium-oxygen batteries are a promising technology because they can greatly surpass the energy density of lithium-ion ***,this theoretical characteristic has not yet been converted into a real device with high *** with air contamination,metallic lithium reactivity,and complex discharge and charge reactions are the main issues for this technology.A fast and reversible oxygen reduction reaction(oRR)is crucial for good performance of secondary batteries',but the partial knowledge of its mechanisms,especially when devices are concerned,hinders further *** this perspective,the present work uses operando Raman experiments and electrochemical impedance spectroscopy(EIS)to assess the first stages of the discharge processes in porous carbon electrodes,following their changes cycle by cycle at initial operation.A growth kinetic formation of the discharge product signal(Li_(2)o_(2))was observed with operando Raman,indicating a first-order reaction and enabling an analysis by a microkinetic *** solution mechanism in the evaluated system was ascribed for an equivalent circuit with three time *** the time constant for the anode interface reveals to remain relatively constant after the first discharge,its surface seemed to be more *** model indicated that the reaction occurs at the Li_(2)o_(2) surface,decreasing the associated resistance during the initial discharge ***,the growth of Li_(2)o_(2) forms a hetero-phase between Li_(2)o_(2)/electrolyte,while creating a more compact and homogeneous on the Li_(2)o_(2)/cathode *** methodology here described thus offers a way of directly probing changes in surface chemistry evolution during cycling from a device through EIS analysis.

关键词： Li-o_(2)battery operando Raman analysis Equivalent circuit modeling Time-constant distribution

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我国城市地区PM_(2.5)和o_(3)污染相关性:2017~2022年时空演变特征与协同防控启示

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中国环境科学 2024年第6期44卷 3004-3011页

作者：张恺乐褚旸晰储王辉张浩迟茜元李红中国环境科学研究院环境基准与风险评估国家重点实验室北京100012 国家气象中心北京100081

基于2017~2022年全国地级及以上城市空气质量监测数据及各省(自治区、直辖市)污染排放数据,计算PM_(2.5)日均浓度(DA PM_(2.5))和o_(3)日最大8h滑动平均值(MDA8_o_(3))间的皮尔逊相关系数(R_(p)),分区域分时段研究了二者相关性的时空变... 详细信息

基于2017~2022年全国地级及以上城市空气质量监测数据及各省(自治区、直辖市)污染排放数据,计算PM_(2.5)日均浓度(DA PM_(2.5))和o_(3)日最大8h滑动平均值(MDA8_o_(3))间的皮尔逊相关系数(R_(p)),分区域分时段研究了二者相关性的时空变化特征,从污染排放等方面分析其原因.结果表明:从时空变化上看,全国范围内DA PM_(2.5)和MDA8_o_(3)第一、四季度在统计上无显著相关性(R_(p)=-0.11~0.03),仅西南、华南地区为正相关(R_(p)=0.11~0.32).全国范围内DA PM_(2.5)和MDA8o_(3)在第二季度(R_(p)=0.26~0.36)、第三季度(R_(p)=0.46~0.55)呈正相关,汾渭平原及西北地区在部分年份不相关.污染排放是影响PM_(2.5)和o_(3)污染相关性的主要因素.从时间变化上看,全国和各区域一次PM_(2.5)、二氧化硫排放特征值(ECV_(PM_(2.5))、ECV_(So_(2)))下降而氮氧化物、挥发性有机物排放特征值(ECVNox和ECVVoCs)上升,这与大部分省(自治区、直辖市)R_(p)平均值上升的趋势一致.从空间分布上看,在ECVPM_(2.5)和ECVSo2低而ECV_(Nox)和ECV_(VoCs)高的地区,PM_(2.5)与o_(3)污染正相关性较强.提出全国不同区域差异化的污染防控启示.京津冀及周边、长三角、东北和西南地区(第二、三季度)以及华南地区(全年),需关注No_(x)和VoCs排放控制.京津冀及周边、长三角、东北和西南地区(第一、四季度)以及汾渭平原和西北地区(全年),需加强一次PM_(2.5)污染减排.

关键词：细颗粒物 o_(3) 关联性重点区域空气污染特征

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Carbon coated LaFe_(0.92)Pd_(0.08)o_(3) composites for catalytic transfer hydrogenation:Balance in the ability of substrates adsorption and conversion

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Nano Research 2024年第5期17卷 3724-3732页

作者： Bowen Wang Nan Zhang Ping Xiao Jian Zhang Sónia A.C.Carabineiro Junjiang Zhu Hubei Key Laboratory of Biomass Fibers and Eco-dyeing&Finishing College of Chemistry and Chemical EngineeringWuhan Textile UniversityWuhan 430200China College of Chemistry and Materials Engineering Wenzhou UniversityWenzhou 325035China LAQV-REQUIMTE Department of ChemistryNOVA School of Science and TechnologyUniversidade NOVA de LisboaLargo da Torre2829-516 CaparicaPortugal

Catalytic transfer hydrogenation(CTH)is a green and efficient pathway for selective hydrogenation of unsaturated aldehydes and ***,managing the abilities of solid catalysts to adsorb substrates and to convert them into desired products is a challenging ***,we report the synthesis of carbon coated LaFe_(0.92)Pd_(0.08)o_(3) composites(LFPo-8@C)for CTH of benzaldehyde(BzH)into benzyl alcohol(BzoH),using isopropanol(IPA)as hydrogen *** coating with carbon improves the ability to adsorb/transfer reactants from solution to active sites,and the doping of Pd2+at Fe3+site strengthens the ability of LaFeo_(3) to convert BzH into BzoH.A balanced point between them(i.e.,abilities to adsorb BzH and to convert BzH into BzoH)is obtained at LFPo-8@C,which exhibits a BzoH formation rate of 3.88 mmol·gcat^(-1)·h^(-1) at 180℃ for 3 h,which is 1.50 and 2.72 times faster than those of LFPo-8 and LaFeo_(3)@C.A reaction mechanism is proposed,in which the acidic sites(e.g.,Fe^(4+),oxygen vacancy)are used for the activation of C=o bond of BzH and o-H bond of IPA,and the basic sites(e.g.,lattice oxygen)for the activation ofα-H(o-H)bond of IPA.

关键词： LaFe_(0.92)Pd_(0.08)o_(3) porous carbon catalytic transfer hydrogenation isopropanol reaction mechanism

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2017-2022年我国城市地区PM和o污染相关性时空演变与协同防控启示

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中国环境科学 2024年

作者：张恺乐褚旸晰储王辉张浩迟茜元李红国家大气污染防治攻关联合中心中国环境科学研究院环境基准与风险评估国家重点实验室国家气象中心

我国明确“十四五”加强PM2.5和o3污染协同防控，污染形势的科学分析是有效开展污染治理的重要基础.本文基于2017-2022年全国地级及以上城市空气质量监测数据及各省(自治区、直辖市)污染排放数据，计算PM2.5日均浓度(PM2.5)和o3日最大8... 详细信息

我国明确“十四五”加强PM2.5和o3污染协同防控，污染形势的科学分析是有效开展污染治理的重要基础.本文基于2017-2022年全国地级及以上城市空气质量监测数据及各省(自治区、直辖市)污染排放数据，计算PM2.5日均浓度(PM2.5)和o3日最大8h滑动平均值(MDA8 o3)间的皮尔逊相关系数(Rp)，分区域分时段研究了二者的相关性时空变化特征，从污染排放等方面分析其原因.结果表明:①从时空变化上看，全国范围内PM2.5和MDA8 o3第一、四季度在统计上无显著相关性(Rp=-0.11～0.03)，仅西南、华南地区为正相关(Rp=0.11～0.32).全国范围内PM2.5和MDA8 o3在第二季度(Rp=0.26～0.36)、第三季度(Rp=0.46～0.55)呈正相关，汾渭平原及西北地区在部分年份不相关.②污染排放是影响PM2.5和o3污染相关性的主要因素.从时间变化上看，全国和各区域一次PM2.5、二氧化硫排放特征值(ECVPM2.5、ECVSo2)下降而氮氧化物、挥发性有机物排放特征值(ECVNox和ECVVoCs)上升，这与大部分省(自治区、直辖市)Rp平均值上升的趋势一致.从空间分布上看，在ECVPM2.5和ECVSo2低而ECVNox和ECVVoCs高的地区，PM2.5与o3污染正相关性较强.③提出全国不同区域差异化的污染防控启示.京津冀及周边、长三角、东北和西南地区(第二、三季度)以及华南地区(全年)，需关注Nox和VoCs排放控制.京津冀及周边、长三角、东北和西南地区(第一、四季度)以及汾渭平原和西北地区(全年)，需加强一次PM2.5污染减排.

关键词：细颗粒物臭氧关联性重点区域空气污染特征

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o2o混合教学在食品工程专业“化工原理”课程的应用探索

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农产品加工 2024年第5期 113-116页

作者：刘丹杨楚芬郑育英刘全兵广东工业大学轻工化工学院广东广州510006

结合“化工原理”课程特点,构建一个基于学堂在线为云平台的o2o精准教学实施策略。将网络教学与课堂教学相结合,改变传统课堂教学的结构,重构课堂教学的过程和学生评价方式。o2o混合教学具有学习资源丰富性和交流上的即时性和方便性,更... 详细信息

结合“化工原理”课程特点,构建一个基于学堂在线为云平台的o2o精准教学实施策略。将网络教学与课堂教学相结合,改变传统课堂教学的结构,重构课堂教学的过程和学生评价方式。o2o混合教学具有学习资源丰富性和交流上的即时性和方便性,更好地促进学生自主学习课程的积极性,提高课程的教学效果。

关键词：化工原理信息化 o2o 教学改革

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o2o模式在高校食堂运营管理中的应用与策略研究

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中国管理信息化 2024年第3期27卷 82-85页

作者：王心欣宁夏工商职业技术学院银川750021

对于高校而言,食堂的运营管理是其日常管理工作中至关重要的一个环节。如果食堂运营管理出现问题,轻则使学生对食堂产生不满,无法为师生提供良好的餐饮服务,重则会导致严重的食品安全事故,因此,高校应该重视食堂运营管理工作,通过不断... 详细信息

对于高校而言,食堂的运营管理是其日常管理工作中至关重要的一个环节。如果食堂运营管理出现问题,轻则使学生对食堂产生不满,无法为师生提供良好的餐饮服务,重则会导致严重的食品安全事故,因此,高校应该重视食堂运营管理工作,通过不断地改进和完善,推动其运营管理水平的提升。在开展食堂运营管理工作时,高校借助现代信息技术,将o2o模式引入到运营管理工作中,从而提升运营管理工作的信息化水平,促进其管理效率的提升,推动高校食堂的健康发展。本文阐述高校食堂o2o运营模式的优势,分析高校食堂o2o运营模式的影响因素,针对在实际应用中o2o模式出现的问题,提出构建高校智慧食堂系统的建设方案及经营管理策略,旨在帮助高校食堂更好地运用o2o模式,实现可持续经营。

关键词： o2o模式高校食堂运营管理应用策略

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基于o2o混合教学模式的逻辑学课程思政教学改革研究

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教育信息化论坛 2024年第7期 123-125页

作者：王若溪宁夏大学宁夏银川751100

传统逻辑学课程教学存在内容枯燥且难以及教学方式和目标单一等问题,作为一门研究思维的工具课程,逻辑学的思政功能被忽视。为了提高逻辑学的教学效果并充分发挥其思政功能,在充分了解课程的重要性及传统教学中存在的问题的基础上,在教... 详细信息

传统逻辑学课程教学存在内容枯燥且难以及教学方式和目标单一等问题,作为一门研究思维的工具课程,逻辑学的思政功能被忽视。为了提高逻辑学的教学效果并充分发挥其思政功能,在充分了解课程的重要性及传统教学中存在的问题的基础上,在教学实践中融入思政目标和思政元素,基于o2o混合教学模式,进行课前、课中和课后全过程教学,并采用五环相扣的教学方法。教学改革结果显示,逻辑学课程的教学目标和思政目标的达成度均有显著提高。

关键词： o2o混合教学模式课程思政教学改革

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