检索结果-南通市图书馆

Recent advances in intermediate-temperature cO_(2) capture: Materials,technologies and applications

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Energy chemistry 2024年第3期90卷 435-452,I0010页

作者： chengbo Zhao Leiming wang Liang Huang nicholas M.Musyoka Tianshan Xue Jabor Rabeah Qiang wang Engineering Research center for Water Pollution Source control&Eco-remediation College of Environmental Science and EngineeringBeijing Forestry UniversityBeijing 100083China State Key Laboratory of Efficient Production of Forest Resources Beijing Forestry UniversityBeijing 100083China china Machinery Huanyu certification and Inspection co. Ltd.Beijing 102609China Nottingham Ningbo china Beacons of Excellence Research and Innovation Institute University of Nottingham Ningbo ChinaNingbo 315100ZhejiangChina Institute of Atmospheric Environment Chinese Research Academy of Environmental SciencesBeijing 100012China Leibniz-Institut für Katalyse e.V. Albert-Einstein-Str.29aRostock D-18059Germany

carbon capture,utilization and storage(ccUS) is widely recognized as a vital strategy for mitigating the impact of human induced climate *** various cO_(2) adsorbents,intermediate-temperature solid adsorbents have garnered significant attention due to their potential applications in hydrogen utilization,specifically in the water gas shift,steam reforming and gasification *** processes are crucial for achieving carbon *** laboratory-level studies have showcased the high adsorption capacity of these materials via various synthesis and modification methods,their practical application in complex industrial environments remains challenging,impeding the commercialization *** review aims to critically summarize the recent research progress made in intermediatetemperature(200-400℃) solid cO_(2) adsorbents,particularly focusing on indicators such as cyclability,gas selectivity,and formability,which play vital roles in industrial application ***,we provide an overview of laboratory-level advanced technologies specifically tailored for industrial ***,we highlight several industrial-ready advanced technologies that can pave the way for overcoming the challenges associated with large-scale *** insights provided by this review aim to assist researchers in identifying the most relevant research directions for industrial *** promoting advances in the application of solid adsorbents,we strive to facilitate the ultimate goal of achieving carbon neutrality.

关键词： Intermediate-temperature cO_(2) capture MgO LDHs Industrialization

Review on laser directed energy deposited aluminum alloys

在线全文

学校读者我要写书评

暂无评论

International Journal of Extreme Manufacturing 2024年第2期6卷 84-131页

作者： Tian-Shu Liu Peng chen Feng Qiu Hong-Yu Yang nicholas Tan Yew Jin Youxiang chew Di wang Ruidi Li Qi-chuan Jiang chaolin Tan Singapore Institute of Manufacturing Technology(SIMTech) Agency for ScienceTechnology and Research(A∗STAR)5 Cleantech LoopSingapore 636732Singapore State Key Laboratory of Automotive Simulation and control Jilin UniversityChangchun 130025People’s Republic of China Key Laboratory of Automobile Materials Ministry of Education and Department of Materials Science and EngineeringJilin UniversityChangchun 130025People’s Republic of China School of Mechanical&Automotive Engineering South China University of TechnologyGuangzhou 510640People’s Republic of China State Key Laboratory of Powder Metallurgy Central South UniversityChangsha 410083People’s Republic of China

Lightweight aluminum(Al)alloys have been widely used in frontier fields like aerospace and automotive industries,which attracts great interest in additive manufacturing(AM)to process high-value Al *** a mainstream AM technique,laser-directed energy deposition(LDED)shows good scalability to meet the requirements for large-format component manufacturing and ***,LDED Al alloys are highly challenging due to their inherent poor printability(*** laser absorption,high oxidation sensitivity and cracking tendency).To further promote the development of LDED high-performance Al alloys,this review offers a deep understanding of the challenges and strategies to improve printability in LDED Al *** porosity,cracking,distortion,inclusions,element evaporation and resultant inferior mechanical properties(worse than laser powder bed fusion)are the key challenges in LDED Al *** parameter optimizations,in-situ alloy design,reinforcing particle addition and field assistance are the efficient approaches to improving the printability and performance of LDED Al *** underlying correlations between processes,alloy innovation,characteristic microstructures,and achievable performances in LDED Al alloys are *** benchmark mechanical properties and primary strengthening mechanism of LDED Al alloys are *** review aims to provide a critical and in-depth evaluation of current progress in LDED Al *** opportunities and perspectives in LDED high-performance Al alloys are also outlined.

关键词： additive manufacturing laser directed energy deposition(LDED) aluminum alloys printability aluminum matrix composite auxiliary fields mechanical properties

Verification and Validation of High-Resolution Inviscid and Viscous conical Nozzle Flows

在线全文

学校读者我要写书评

暂无评论

communications on Applied Mathematics and computation 2024年第1期6卷 533-549页

作者： Luciano K.Araki Rafael B.de R.Borges nicholas Dicati P.da Silva chi-wang Shu Department of Mechanical Engineering Federal University of ParanáCuritiba81531-980ParanáBrazil Mathematics and Statistics Institute Rio de Janeiro State UniversityRio de Janeiro20550-900Rio de JaneiroBrazil Department of Mechanical Engineering State University of MaringáMaringá87020-900ParanáBrazil Division of Applied Mathematics Brown UniversityProvidenceRI02912USA

capturing elaborated flow structures and phenomena is required for well-solved numerical *** finite difference methods allow simple discretization of mesh and model ***,they need simpler meshes,e.g.,*** inverse Lax-Wendroff(ILW)procedure can handle complex geometries for rectangular ***-resolution and high-order methods can capture elaborated flow structures and *** also have strong mathematical and physical backgrounds,such as positivity-preserving,jump conditions,and wave propagation *** perceive an effort toward direct numerical simulation,for instance,regarding weighted essentially non-oscillatory(WENO)***,we propose to solve a challenging engineering application without turbulence *** aim to verify and validate recent high-resolution and high-order *** check the solver accuracy,we solved vortex and couette ***,we solved inviscid and viscous nozzle flows for a conical *** employed the finite difference method,positivity-preserving Lax-Friedrichs splitting,high-resolution viscous terms discretization,fifth-order multi-resolution WENO,ILW,and third-order strong stability preserving *** showed the solver is high-order and captured elaborated flow structures and *** can see oblique shocks in both nozzle *** the viscous flow,we also captured a free-shock separation,recirculation,entrainment region,Mach disk,and the diamond-shaped pattern of nozzle flows.

关键词： High-resolution compressible Navier-Stokes Free-shock separation Nozzle flow

Analysis of the combined effect of rs699 and rs5051 on angiotensinogen expression and hypertension

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

chronic Diseases and Translational Medicine 2024年第2期10卷 102-117页

作者： nicholas R.Powell Tyler Shugg Jacob Leighty Matthew Martin Rolf P.Kreutz Michael T.Eadon Dongbing Lai Tao Lu Todd c.Skaar Division of clinical Pharmacology Department of MedicineSchool of MedicineIndiana UniversityIndianapolisIndianaUSA Department of Pharmacology and Toxicology School of MedicineIndiana UniversityIndianapolisIndianaUSA Department of cardiology School of MedicineKrannert Institute of CardiologyIndiana UniversityIndianapolisIndianaUSA Division of Nephrology Department of MedicineSchool of MedicineIndiana UniversityIndianapolisIndianaUSA Department of Medical and Molecular Genetics School of MedicineIndiana UniversityIndianapolisIndianaUSA

Background Hypertension(HTN)involves genetic variability in the renin-angiotensin system and influences antihypertensive *** previously reported that angiotensinogen(AGT)messenger RNA(mRNA)is endogenously bound by miR-122-5p and rs699 A>G decreases reporter mRNA in the microRNA functional-assay *** AGT promoter variant rs5051 c>T is in linkage disequilibrium(LD)with rs699 A>G and increases AGT *** independent effect of these variants is understudied due to their LD therefore we aimed to test the hypothesis that increased AGT by rs5051 c>T counterbalances AGT decreased by rs699 A>G,and when these variants occur independently,it translates to HTN-related *** We used in silico,in vitro,in vivo,and retrospective models to test this *** In silico,rs699 A>G is predicted to increase miR-122-5p binding affinity by 3%.Mir-ecLIP results show rs699 is 40–45 nucleotides from the strongest microRNA-binding site in the AGT ***,rs699 A>G increases AGT mRNA in an AGT-plasmid-cDNA HepG2 expression ***-Tissue Expression(GTEx)and UK Biobank analyses demonstrate liver AGT expression and HTN phenotypes are not different when rs699 A>G occurs independently from rs5051 c>***,GTEx and the in vitro experiments suggest rs699 A>G confers cell-type-specific effects on AGT mRNA abundance,and suggest paracrine renal renin-angiotensin-system perturbations could mediate the rs699 A>G associations with *** We found that rs5051 c>T and rs699 A>G significantly associate with systolic blood pressure in Black participants in the UK Biobank,demonstrating a fourfold larger effect than in White *** studies are warranted to determine if altered antihypertensive response in Black individuals might be due to rs5051 c>T or rs699 A>*** like this will help clinicians move beyond the use of race as a surrogate for genotype.

关键词： angiotensinogen genetic and genomic medicine hypertension rs699

HDPairFinder:A data processing platform for hydrogen/deuterium isotopic labeling-based nontargeted analysis of trace-level amino-containing chemicals in environmental water

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2024年第2期136卷 583-593页

作者： Tingting Zhao Kristin carroll caley B.craven nicholas J.P.Wawryk Shipei Xing Jian Guo Xing-Fang Li Tao Huan Department of chemistry Faculty of ScienceUniversity of British ColumbiaVancouver Campus2036 Main MallVancouverBritish ColumbiaV6T 1Z1Canada Division of Analytical and Environmental Toxicology Department of Laboratory Medicine and PathologyFaculty of Medicine and DentistryUniversity of AlbertaEdmontonAlberta T6G 2G3Canada

The combination of hydrogen/deuterium(H/D)formaldehyde-based isotopic methyl labeling with solid-phase extraction and high-performance liquid chromatography–high resolution mass spectrometry(HPLc-HRMS)is a powerful analytical solution for nontargeted analysis of trace-level amino-containing chemicals in water *** the huge amount of chemical information generated in HPLc-HRMS analysis,identifying all possible H/Dlabeled amino chemicals presents a significant challenge in data *** address this,we designed a streamlined data processing pipeline that can automatically extract H/D-labeled amino chemicals from the raw HPLc-HRMS data with high accuracy and ***,we developed a cross-correlation algorithm to correct the retention time shift resulting from deuterium isotopic effects,which enables reliable pairing of H-and D-labeled ***,we implemented several bioinformatic solutions to remove false chemical features generated by in-source fragmentation,salt adduction,and natural13c ***,we used a data mining strategy to construct the AMINES library that consists of over 38,000 structure-disjointed primary and secondary amines to facilitate putative compound ***,we integrated these modules into a freely available R program,*** rationale of each module was justified and its performance tested using experimental H/D-labeled chemical standards and authentic water *** further demonstrated the application of HDPairFinder to effectively extract N-containing contaminants,thus enabling the monitoring of changes of primary and secondary N-compounds in authentic water *** is a reliable bioinformatic tool for rapid processing of H/D isotopic methyl labeling-based nontargeted analysis of water samples,and will facilitate a better understanding of N-containing chemical compounds in water.

关键词： Isotope labeling Nontargeted analysis Reactive N-compounds HPLc-HRMS Source water

Groupoid Approach to Ergodic Dynamical System of commutative von Neumann Algebra

在线全文

学校读者我要写书评

暂无评论

Advances in Pure Mathematics 2024年第3期14卷 167-184页

作者： nicholas O. Okeke Murphy E. Egwe Physical and Mathematical Sciences Dominican University Ibadan Nigeria Department of Mathematics University of Ibadan Ibadan Nigeria

Given a compact and regular Hausdorff measure space (X, μ), with μ a Radon measure, it is known that the generalised space M(X) of all the positive Radon measures on X is isomorphic to the space of essentially bounded functions L∞(X, μ) on X. We confirm that the commutative von Neumann algebras M⊂B(H), with H=L2(X, μ), are unitary equivariant to the maximal ideals of the commutative algebra c(X). Subsequenly, we use the measure groupoid to formulate the algebraic and topological structures of the commutative algebra c(X) following its action on M(X) and define its representation and ergodic dynamical system on the commutative von Neumann algebras of M of B(H) .

关键词： Measure Groupoid Groupoid Equivalence Ergodic Action convolution Algebra von Neumann Algebra Generalized Space

马来西亚东部Setiu潟湖1970年以来沉积环境演化及其对ENSO的响应

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

海洋学报 2024年

作者：赵周平李超骆正骅 nicholas Ng chia Wei 戴璐海洋地质国家重点实验室(同济大学)

马来半岛位于低纬热带地区，厄尔尼诺-南方涛动（El Nino-Southern Oscillation，简称ENSO）如何影响该区域的气候，尤其是降水仍然存在争议。本文以马来半岛东北部登嘉楼州Setiu潟湖钻孔NTT-3为研究对象，通过粒度、总有机碳及总氮含量... 详细信息

马来半岛位于低纬热带地区，厄尔尼诺-南方涛动（El Nino-Southern Oscillation，简称ENSO）如何影响该区域的气候，尤其是降水仍然存在争议。本文以马来半岛东北部登嘉楼州Setiu潟湖钻孔NTT-3为研究对象，通过粒度、总有机碳及总氮含量、c/N比值和XRF岩心扫描等分析，探讨该钻孔的沉积环境变化及其对ENSO的响应。研究结果显示，钻孔记录中自1970年前后（84 cm处）出现两种不同的变化趋势。1970年之前钻孔下部沉积物粒度、有机和无机地球化学特征趋势波动明显，沉积速率较低。而1970年以来，潟湖沉积环境总体稳定，沉积物中的有机组分主要来自红树林，同时伴有河流输入的淡水浮游植物的贡献。频谱分析结果显示1970年以来钻孔上部存在明显的ENSO周期变化。强El Nino现象基本对应低Zr/Rb比值和低Zr/Ti比值，而强La Nina现象基本对应高Zr/Rb比值和Zr/Ti比值。该结论不仅支持了现代观测对马来半岛东部沿海地区气候变化的认识，同时也在地质记录中发现了ENSO变化的直接证据，对全面认识和理解ENSO对亚洲气候变化的影响、区域陆海相互作用过程和环境响应等方面具有重要现实意义。

关键词： Setiu潟湖沉积记录频谱分析 ENSO

cooperation and contract Design in Project Management with Outsourcing

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Systems Science and Systems Engineering 2023年第1期32卷 34-70页

作者： Xiaoqiang cai nicholas G.Hall Siyi wang Feng Zhang School of Data Science The Chinese University of Hong KongShenzhen518172China Shenzhen Research Institute of Big Data Shenzhen518172China Department of Operations&Business Analytics Fisher College of BusinessOhio State UniversityColumbusOhioUSA School of Science and Engineering The Chinese University of Hong KongShenzhen518172China Suning Bank Nanjing210019China

We study a project management problem where the prime contractor needs to outsource tasks to subcontractors with the required *** execution of the project requires proper coordination among the subcontractors,as well as contract design by the prime contractor to incentivize the *** modeling the subcontractors’coordination problem as a cooperative game,we develop a profit sharing scheme to facilitate the subcontractors’*** consider two contract designs for the prime contractor:a uniform contract across all subcontractors,and a nonuniform one that customizes incentives for each *** propose efficient algorithms to solve the implicit optimization problems for optimal contract *** experiments show that the pooling effect of subcontractors’cooperation mitigates the negative impact of poor estimates about the crashing cost and resource *** observe three unexpected results through the randomized computation experiments:(i)the subcontractors’profits may decrease if they provide false information;(ii)it is safer for the prime contractor to overestimate subcontractors’crashing costs than underestimate them;and(iii)uniform contracts deliver more project profit for the subcontractors in the coalitions.

关键词： Project management with outsourcing subcontracting cooperative game contract design

Robust and high-sensitivity thermal probing at the nanoscale based on resonance Raman ratio (R3)

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Extreme Manufacturing 2022年第3期4卷 150-161页

作者： Hamidreza Zobeiri nicholas Hunter Shen Xu Yangsu Xie Xinwei wang Department of Mechanical Engineering Iowa State UniversityAmesIA 50011United States of America School of Mechanical and Automotive Engineering Shanghai University of Engineering Science333 Longteng RoadShanghai 201620People’s Republic of China college of chemistry and Environmental Engineering Shenzhen UniversityShenzhenGuangdong 518055People’s Republic of China

Raman spectroscopy-based temperature sensing usually tracks the change of Raman wavenumber,linewidth and intensity,and has found very broad applications in characterizing the energy and charge transport in nanomaterials over the last *** temperature coefficients of these Raman properties are highly material-dependent,and are subjected to local optical scattering *** a result,Raman-based temperature sensing usually suffers quite large uncertainties and has low ***,a novel method based on dual resonance Raman phenomenon is developed to precisely measure the absolute temperature rise of nanomaterial(nm WS_(2) film in this work)from 170 to 470 K.A 532 nm laser(2.33 eV photon energy)is used to conduct the Raman *** photon energy is very close to the excitonic transition energy of WS_(2) at temperatures close to room temperature.A parameter,termed resonance Raman ratio(R3)Ω=I_(A1g)/IE_(2g) is introduced to combine the temperature effects on resonance Raman scattering for the A_(1g) and E_(2g) modes.Ω has a change of more than two orders of magnitude from 177 to 477 K,and such change is independent of film thickness and local optical *** is shown that when Ω is varied by 1%,the temperature probing sensitivity is 0.42 K and 1.16 K at low and high temperatures,*** on Ω,the in-plane thermal conductivity(k)of a∼25 nm-thick suspended WS_(2) film is measured using our energy transport state-resolved Raman(ET-Raman).k is found decreasing from 50.0 to 20.0 Wm^(−1) K^(−1) when temperature increases from 170 to 470 *** agrees with previous experimental and theoretical results and the measurement data using our *** R3 technique provides a very robust and high-sensitivity method for temperature probing of nanomaterials and will have broad applications in nanoscale thermal transport characterization,non-destructive evaluation,and manufacturing monitoring.

关键词： resonant Raman scattering two-dimensional(2D)materials Raman intensity ratio ET-Raman thermal conductivity