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High-performance nickel metal hydride battery anode with enhanced durability and excellent low-temperature discharge capability

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Nano Research 2024年第10期17卷 8819-8825页

作者： Zhitao Chen Huitian Liu Jean Nei Nian Liu School of Chemical and Biomolecular Engineering Georgia Institute of TechnologyAtlantaGA 30332USA gp Batteries HongkongChina

Current AB_(5)-type hydrogen storage alloys employed in nickel-metal hydride(NiMH)batteries exhibit exceptional low-temperature discharge performance but suffer from limited cycle life and insufficient high-temperature *** overcome these challenges,we introduce a hydrothermal synthesized LaF_(3)coating layer on the surface of the AB_(5)anode *** LaF_(3)coating layer adds a protective barrier for the active material,significantly improving the battery's cycle life and high-temperature *** findings indicate that(1)the LaF_(3)coated anode demonstrates an extended cycle life with increased specific capacity and a capacity retention of 88%after 40 cycles of abusive overcharging and rapid discharging at room temperature.(2)The synthesized anode exhibits a 97%recovery of its specific capacity of 292.7 mAh/g following 144 h of high-temperature storage.(3)The low-temperature discharge capacity of the synthesized anode remains on par with the pristine AB_(5)alloy at 230.4 mAh/g in a-40℃*** research presents a significant advancement in hydrogen storage alloy coatings and offers valuable insights for designing electrodes in NiMH batteries.

关键词： nickel metal hydride(NiMH)batteries hydrothermal synthesis lanthanum fluoride discharge capacity low temperature

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gp-220型水平工程钻机

工程机械 1988年第1期 4-5页

一种适用于市政、铁道、石油、地质等部门地下水平钻孔施工的新型工程机械——gp-220型水平工程钻机已由北京市市政工程研究所和张家口探矿机械厂联合研制成功。地质矿产部装备工业公司于1987年1月在张家口市组织并通过了技术鉴定,由张... 详细信息

一种适用于市政、铁道、石油、地质等部门地下水平钻孔施工的新型工程机械——gp-220型水平工程钻机已由北京市市政工程研究所和张家口探矿机械厂联合研制成功。地质矿产部装备工业公司于1987年1月在张家口市组织并通过了技术鉴定,由张家口探矿机械厂进行小批量生产。该机是国内首创采用双重管正循环钻进的水平钻机。试验证明,具有性能良好、工艺先

关键词：工程钻机 gp-220 北京市市政工程研究所手动卡盘

Stochastic seismic inversion and Bayesian facies classification applied to porosity modeling and igneous rock identification

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Petroleum Science 2024年第2期21卷 918-935页

作者： Fábio Júnior Damasceno Fernandes Leonardo Teixeira Antonio Fernando Menezes Freire Wagner Moreira Lupinacci Exploratory Interpretation and Reservoir Characterization Group(GIECAR) Department of Geology and GeophysicsFederal Fluminense UniversityNiter oiRJ24210-346Brazil Petrobras Rio de JaneiroRJ20231-030Brazil National Institute of Science and Technology of Petroleum Geophysics(INCT-gp/CNPQ) Niter oiRJ24210-346Brazil

We apply stochastic seismic inversion and Bayesian facies classification for porosity modeling and igneous rock identification in the presalt interval of the Santos Basin. This integration of seismic and well-derived information enhances reservoir characterization. Stochastic inversion and Bayesian classification are powerful tools because they permit addressing the uncertainties in the model. We used the ES-MDA algorithm to achieve the realizations equivalent to the percentiles P10, P50, and P90 of acoustic impedance, a novel method for acoustic inversion in presalt. The facies were divided into five: reservoir 1,reservoir 2, tight carbonates, clayey rocks, and igneous rocks. To deal with the overlaps in acoustic impedance values of facies, we included geological information using a priori probability, indicating that structural highs are reservoir-dominated. To illustrate our approach, we conducted porosity modeling using facies-related rock-physics models for rock-physics inversion in an area with a well drilled in a coquina bank and evaluated the thickness and extension of an igneous intrusion near the carbonate-salt interface. The modeled porosity and the classified seismic facies are in good agreement with the ones observed in the wells. Notably, the coquinas bank presents an improvement in the porosity towards the top. The a priori probability model was crucial for limiting the clayey rocks to the structural lows. In Well B, the hit rate of the igneous rock in the three scenarios is higher than 60%, showing an excellent thickness-prediction capability.

关键词： Stochastic inversion Bayesian classification Porosity modeling Carbonate reservoirs Igneous rocks

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全科医师课堂消化不良症与幽门螺杆菌

英国医学杂志中文版 2007年第3期10卷 184-186页

作者： Rupal Shah 夏志伟 Battersea GP principalLondon

消化不良症十分常见，在英国成年人中，有相关症状者高达40％。每名全科医生平均每年接诊消化不良症患者210名，占全部患者的4％，其中约有十分之一转诊做进一步检查。经内镜检查，在服用非甾体抗炎药的人群中，大约有10％～20％患有消... 详细信息

消化不良症十分常见，在英国成年人中，有相关症状者高达40％。每名全科医生平均每年接诊消化不良症患者210名，占全部患者的4％，其中约有十分之一转诊做进一步检查。经内镜检查，在服用非甾体抗炎药的人群中，大约有10％～20％患有消化性溃疡。而英国每年用于抑酸剂的花费高达五亿英镑。

关键词：消化不良症幽门螺杆菌全科医师课堂非甾体抗炎药内镜检查消化性溃疡相关症状

The stronger venue for flexible electronics

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npj Flexible Electronics 2023年第1期7卷 46-47页

作者： Ravinder Dahiya Bendable Electronics&Sustainable Technologies(BEST)gp. Department of Electrical and Computer EngineeringNortheastern UniversityBostonMA 02115USA

I am deeply honoured and delighted to write this editorial as the new Editor-in-Chief of npj Flexible Electronics.I feel a strong sense of connection to the journal as some of the early papers by my group were published here.I would like to begin by thanking the outgoing Editor-in-Chief,*** Bradley for passing on this strong and healthy *** journal has had a lot of success under his and ***’s excellent stewardship and incredible *** is evident from the large number of downloads(about 425,000 so far)of the papers published in npj Flexible Electronics and the altimetric mentions(925,as per 2022 usage metric).

关键词： journal passing thank

Liquid chromatography tandem mass spectrometry method for the estimation of lamotrigine in human plasma:Application to a pharmacokinetic study

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Journal of Pharmaceutical Analysis 2013年第2期3卷 75-83页

作者： Santosh Ghatol Vatsal Vithlani Sanjay Gurule Arshad Khuroo Tausif Monif Pankaj Partani Department of Clinical Pharmacology and Pharmacokinetics Ranbaxy Research LaboratoriesPlot:GP-VSec-18HSIIDCGurgaon 122015HaryanaIndia

A reliable,selective and sensitive liquid chromatography tandem mass spectrometry method was developed and validated for the quantification of lamotrigine in human plasma using lamotrigine13C3,d3 as an internal *** and internal standard were extracted from human plasma by solid-phase extraction and detected in positive ion mode by tandem mass spectrometry with electrospray ionization（ESI） *** separation was performed on a Chromolith s SpeedROD;RP-18e column（50-4.6 mm i.d.） using acetonitrile：570.1 mM ammonium formate solution（90：10,v/v） as the mobile phase at a flow rate of 0.500 mL/*** calibration curves were linear over the range of 5.02-1226.47 ng/mL with the lower limit of quantitation validated at 5.02 ng/*** analytes were found stable in human plasma through three freeze（-20℃）-thaw（ice-cold water bath） cycles and under storage on bench-top in ice-cold water bath for at least 6.8 h,and also in the mobile phase at 10℃ for at least *** method has shown good reproducibility,as the intra-and inter-day precisions were within 3.0%,while the accuracies were within 76.0% of nominal *** validated LC-MS/MS method was applied for the evaluation of pharmacokinetic and bioequivalence parameters of lamotrigine after an oral administration of 50mg lamotrigine tablet to thirty-two healthy adult male volunteers.

关键词： Lamotrigine Liquid chromatography/tandem mass spectrometry Solid phase extraction Pharmacokinetic study

Diagenesis and its controls on reservoir quality of the Tambar oil field, Norwegian North Sea

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能源地球科学(英文) 2021年第1期2卷 10-31页

作者： Mohammed Bukar Richard H.Worden Shettima Bukar Philip Shell Department of Earth and Ocean Sciences University of LiverpoolLiverpoolL693GPUK Department of Geology University of MaiduguriNigeria Saudi Aramco Al-DhahranEastern RegionSaudi Arabia

A study of the diagenetic evolution of the Late Jurassic sandstones of the shallow marine facies in the Tambar oil field,Norwegian North Sea was carried out to understand its controls on reservoir *** samples and a set of wireline logs obtained from three wells were used to carry out petrographic studies including light optics and scanning electron microscopy,well log analysis,fluid inclusions,X-ray diffraction(XRD)for whole rock samples,clay mineral extracts and stable *** Tambar reservoir sandstones range mainly from siltstone to fine-grained sandstones,exclusively arkoses cemented mainly by microcrystalline quartz,euhedral quartz overgrowth,dolomite cement,illite and *** diagenetic/eodigenetic minerals include pyrite,calcite,and microcrystalline quartz and late diagenetic/mesodiagenetic minerals include quartz overgrowth,dolomite,illite and *** d18O values of dolomite cement in the Tambar sandstone reservoir range from11.77‰to3.57‰PDB,while the d13C values of the dolomite cement are from5.07‰to1.12‰*** temperature for fluid inclusions trapped in authigenic quartz fall between 130℃ and 169℃.The reservoir quality is controlled mainly by early formed grain-coating microcrystalline quartz that precipitated from the dissolution of sponge spicules which significantly inhibits quartz overgrowth *** emplacement do not show significant control on reservoir quality because considerable quartz cementation has taken place before the onset of major oil *** the coarse-grained sands show a correlation between quartz cement volume and water ***,the interpreted temperature for dolomite cementation is significantly higher for water leg-suggested effect of oil emplacement on the late ***-standing these controls on the reservoir quality will enhance the exploration strategy for the Tambar oil field.

关键词： Diagenesis Oil-inhibition Microquartz-inhibition Anomalous porosity Permeability

Simultaneous quantitation of atorvastatin and its two active metabolites in human plasma by liquid chromatography/(–) electrospray tandem mass spectrometry

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Journal of Pharmaceutical Analysis 2014年第1期4卷 26-36页

作者： Pankaj Partani S.Manaswita Verma Sanjay Gurule Arshad Khuroo Tausif Monif Department of Clinical Pharmacology and Pharmacokinetics Ranbaxy Research Laboratories Plot: GP-5 Sec-18 HSIIDC Department of Pharmaceutical Sciences Birla Institute of Technology

A sensitive, accurate and selective liquid chromatography-tandem mass spectrometry method （LC-MS/MS） was developed and validated for the simultaneous quantitation of atorvastatin （AT） and its equipotent hydroxyl metabolites, 2-hydroxy atorvastatin （2-AT） and 4-hydroxy atorvastatin （4-AT）, in human plasma. Electrospray ionization （ESI） interface in negative ion mode was selected to improve the selectivity and the sensitivity required for this application. Additionally, a solid phase extraction （SPE） step was performed to reduce any ion-suppression and/or enhancement effects. The separation of all compounds was achieved in less than 6 min using a C18 reverse-phase fused-cores column and a mobile phase, composed of a mixture of 0.005%formic acid in water：acetonitrile：methanol （35：25：40, v/v/v）, in isocratic mode at a flow rate of 0.6 mL/min. The method has lower limit of quantitation （LLOQ） of 0.050 ng/mL for all analytes. The method has shown tremendous reproducibility, with intra-and inter-day precision less than 6.6%, and intra- and inter-day accuracy within 74.3% of nominal values, for all analytes, and has proved to be highly reliable for the analysis of clinical samples.

关键词： Atorvastatin LC-MS/MS Solid phase extractionPharmacokinetics Method validation

Diagnostic value of18F-FDG PET in the assessment of myocardial viability in coronary artery disease：A comparative study with99mTc SPECT and echocar-diography

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Journal of Geriatric Cardiology 2014年第3期11卷 229-236页

作者： Mansour Al Moudi Zhong-Hua Sun Department of Medical Imaging and Nuclear Medicine King Saud Medical City Riyadh Saudi Arabia Discipline of Medical Imaging Department of Imaging and Applied Physics Curtin University GP0 Box U1987 Perth Western Australia 6845 Australia

ObjectiveTo investigate the diagnostic value of 18F-fluorodeoxyglucose positron emission tomography （18F-FDG PET） in the as-sessment of myocardial viability in patients with known coronary artery disease （CAD） when compared to99mTc single photon emission computed tomography （SPECT） and echocardiography, with invasive coronary angiography as the gold *** patients with diagnosed CAD met the selection criteria, with 10 of them （9 men, mean age 59.5 ± 10.5 years） undergoing all of these imaging proce-dures consisting of SPECT and PET, echocardiography and invasive angiography. Diagnostic sensitivity of these less invasive modalities for detection of myocardial viability was compared to invasive coronary angiography. Inter- and intra-observer agreement was assessed for di-agnostic performance of SPECT and *** all patients with proven CAD, 50% had triple vessel disease. Diagnostic sensitivity of SPECT, PET and echocardiography was 90%, 100% and 80% at patient-based assessment, respectively. Excellent agreement was achieved between inter-observer and intra-observer agreement of the diagnostic value of SPECT and PET in myocardial viability （k= 0.9）. Conclusion18F-FDG PET has high diagnostic value in the assessment of myocardial viability in patients with known CAD when com-pared to SPECT and echocardiography. Further studies based on a large cohort with incorporation of18F-FDG PET into patient management are warranted.

关键词： Coronary artery disease Diagnostic value Positron emission tomography Single photon emission computed tomography Vi-ability