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全二维气相色谱中第二维保留指数的测定方法研究

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全二维气相色谱中第二维保留指数的测定方法研究

Autologous cord blood vs individualized supplements in autistic spectrum disorder:CORDUS study results

中国核学会2011年学术年会

作者：赵雅平章军王兵 Seong Ho Kim 房爱芹 bogdan bogdanov Craig McClain 张翔中国原子能科学研究院美国路易斯维尔大学

本工作完善了一种以正烷烃系列化合物计算全二维气相色谱-飞行时间质谱(GC×GC/TOF MS)中第二维保留指数的方法。首次应用24次等温实验中所得到的从C-C范围内正烷烃化合物的保留时间覆盖了所有的0-6 s范围的二维空间,这使得从相应的保... 详细信息

本工作完善了一种以正烷烃系列化合物计算全二维气相色谱-飞行时间质谱(GC×GC/TOF MS)中第二维保留指数的方法。首次应用24次等温实验中所得到的从C-C范围内正烷烃化合物的保留时间覆盖了所有的0-6 s范围的二维空间,这使得从相应的保留时间值计算目标化合物的保留指数成为可能。同时,提出了一个经验方程用于表示第二维保留时间、二维柱温和正烷烃的碳数三者之间的关系。这个方程可以利用增加碳数来扩展基于正烷烃为标准物质的二维保留时间。当扩展的正烷烃的碳数为2时,引入的保留指数的偏差小于10iu。在改变起始柱温的6次程序升温实验中,运用建立的方程计算出混合物MegaMix中化合物的保留指数的标准偏差的波动范围从1～12 iu,平均标准偏差是5 iu。

关键词： GC×GC/TOF MS 全二维气相色谱保留时间第二维保留指数

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World Journal of Clinical Pediatrics 2025年第1期14卷 101-112页

作者： Felician A Stancioiu Raluca bogdan bogdan Ivanescu Radu Dumitrescu Department of Clinical Research Bio-Forum FoundationBucharest 040245BucurestiRomania Department of Pediatrics Medicover Hospital BucharestBucharest 013982BucurestiRomania Doctor MiT Clinic Bucharest 013929BucurestiRomania Department of Anesthesiology and Intensive Therapy Medicover HospitalBucharest 013982BucurestiRomania

BACKGROUND Cellular therapies have started an important new therapeutic direction in autistic spectrum disorder(ASD),and the ample diversity of ASD pathophysiology and the different types of cell therapies prompt an equally ample effort to employ clinical studies for studying the ASD causes and cell *** cells have yielded so far mixed results in clinical trials,and at patient level the results varied from impressive to no *** this context we have administered autologous cord blood(ACB)and a non-placebo,material intervention repre-sented by an individualized combination of supplements(ICS)to ASD *** CORDUS clinical study is a crossover study in which both oral ICS and intravenous ACB were sequentially administered to 56 children;ACB was infused as an inpatient *** efficacy was evaluated pre-treatment and post-treatment at 6 months by an independent psychotherapist with Autism Treatment Evaluation Checklist,Quantitative Checklist for Autism in Toddlers and a 16-item comparative table score,after interviewing the children’s parents and *** and after each intervention participants had a set of blood tests including inflammatory,metabolic and oxidative markers,and the neuronal specific *** No serious adverse reactions were noted during and after cord blood or supplement *** improved evaluation scores in 78%of children with age 3–7-years(n=28),but was much less effective in kids older than 8 years or with body weight of more than 35 kg(n=28;only 11%of children improved scores).ICS yielded better results than ACB in 5 cases out of 28,while in 23 kids ACB brought more improvement than ICS(P<0.05);high initial levels of inflammation and ferritin were associated with no *** individual differences were noted in children's progress,and statistically significant improvements were seen after ACB on areas such as verbalization and social interaction,but not on irritability or

关键词： Autistic spectrum disorder Cord blood Stem cells Neuroinflammation Autologous stem cell treatment Neuronal specific enolase

Bridging element-free Galerkin and pluri-Gaussian simulation for geological uncertainty estimation in an ensemble smoother data assimilation framework

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Petroleum Science 2024年第3期21卷 1683-1698页

作者： bogdan Sebacher Remus Hanea Department of Applied Informatics Military Technical Academy“Ferdinand I”Bucharest 050141Romania Equinor Sandslivegen 905254 SandsliBergenNorway

The facies distribution of a reservoir is one of the biggest concerns for geologists,geophysicists,reservoir modelers,and reservoir engineers due to its high importance in the setting of any reliable decisionmaking/optimization of field development *** approach for parameterizing the facies distribution as a random variable comes naturally through using the probability *** the prior probability fields of facies come either from a seismic inversion or from other sources of geologic information,they are not conditioned to the data observed from the cores extracted from the *** paper presents a regularized element-free Galerkin(R-EFG)method for conditioning facies probability fields to facies *** conditioned probability fields respect all the conditions of the probability theory(*** the values are between 0 and 1,and the sum of all fields is a uniform field of 1).This property achieves by an optimization procedure under equality and inequality constraints with the gradient projection *** conditioned probability fields are further used as the input in the adaptive pluri-Gaussian simulation(APS)methodology and coupled with the ensemble smoother with multiple data assimilation(ES-MDA)for estimation and uncertainty quantification of the facies *** history-matching of the facies models shows a good estimation and uncertainty quantification of facies distribution,a good data match and prediction capabilities.

关键词： Element free Galerkin(EFG) Adaptive pluri-Gaussian simulation(APS) Facies distribution estimation Ensemble smoother with multipledata assimilation(ESMDA)

Miniature Detonating Cord (MDC) for Breaking Organic Glass Plates

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含能材料 2008年第5期16卷 618-620页

作者： bogdan ZYGMUNT Military University of Technology Mechatronics Faculty2 Kaliski Str.00-908 WarsawPoland

In order to develop a method to break the aircrafts canopy,a miniature detonating cords (MDC) of 1 mm in diameter were manufactured and its detonation properties were *** in a heavy lead confinement were also manufactured and were examined for breaking of organic glass *** showthat MDC in lead confinement with 1g plastic explosive per metre,cuts organic glass plate 10 mm thick.

关键词：有机玻璃爆炸性能物理性能功能材料塑胶炸弹

Response of photosynthesis,growth,and acorn mass of pedunculate oak to diff erent levels of nitrogen in wet and dry growing seasons

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Journal of Forestry Research 2023年第1期34卷 167-176页

作者： Krunoslav Sever Saša bogdan ŽeljkoŠkvorc Faculty of Forestry and Wood Technology University of ZagrebSvetošimunska 2510000 ZagrebCroatia

The objective was to examine the effects of optimal leaf nitrogen levels>2.0%and suboptimal levels<2.0%,nitrogen nutrition on net photo synthetic rate,stem diameter increment,height growth increment and acorn mass of pedunculate oak during 2010 in the absence of drought stress and during 2011 under the impact of moderate drought *** to the results,moderate drought stress significantly reduced net photo synthetic rate,stem diameter increment and height growth increment,while acorn mass was not *** nitrogen nutrition significantly reduced the net photo synthetic rate and stem diameter increment only in the wet year,acorn mass in both wet and dry years,while height growth increment was not significantly reduced by suboptimal nitrogen nutrition in either *** results indicate that optimal nitrogen levels can stimulate photo synthetic rate and stem diameter increment of pedunculate oak only in the absence of moderate drought ***,the results show that moderate drought stress is a more dominant stressor for photosynthesis and growth of pedunculate oak than suboptimal nitrogen nutrition,while for acorn development,it is the more dominant stressor.

关键词： Quercus robur L. Drought stress Net photosynthic rate Stem diameter increment Height growth increment Acorn mass

Stressed axons craving for glial sugar: links to regeneration?

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Neural Regeneration Research 2022年第2期17卷 304-306页

作者： Elisabetta Babetto bogdan Beirowski Hunter James Kelly Research Institute Jacobs School of Medicine and Biomedical SciencesUniversity at BuffaloBuffaloNYUSA Department of Biochemistry Jacobs School of Medicine and Biomedical SciencesUniversity at BuffaloBuffaloNYUSA Department of Pharmacology and Toxicology Jacobs School of Medicine and Biomedical SciencesUniversity at BuffaloBuffaloNYUSA

Extract The contrary but interrelated processes of axon degeneration and regeneration are the yin and yang of many neurodegenerative conditions. Here we discuss recent evidence for metabolic cross-talk between glia and injured axons regulating these processes. We especially focus on potential bioenergetic mechanisms as to how axon-flanking glia may promote regeneration.

关键词： degeneration conditions. processes.

MnFe2O4 nanoparticles as new catalyst for oxidative degradation of phenol by peroxydisulfate

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Journal of Environmental Sciences 2017年第3期29卷 269-277页

作者： Marcela Stoia Cornelia Muntean bogdan Militaru Faculty of Industrial Chemistry and Environmental Engineering Politehnica University TimisoaraR0-300223 TimisoaraRomania Research Institute for Renewable Energy Politehnica University TimisoaraRO-300006TimisoaraRomania

Manganese ferrite nanopowder was prepared by thermal decomposition at 400℃ of the gel synthesized from manganese and iron nitrates and polyvinyl alcohol. X-ray diffractometry evidenced that manganese ferrite was formed as single crystalline phase at this temperature. Scanning electron microscope images evidenced the formation of very fine spherical particles （d 〈 11 nm） of manganese ferrite, with specific surface area of 147 m2/g. The powder obtained at 400℃ was used as a catalyst for the oxidative degradation of phenol in aqueous solutions, in the presence of potassium peroxydisulfate as oxidant. High phenol removal efficiencies above 90% were reached at： pH 3-3.5, phenol initial concentration around 50 mg/L, peroxydisulfate：phenol mass ratio 10：1, and catalyst dose 3 g/L. Total organic carbon measurements showed that the degradation of phenol goes, under these conditions, to mineralization in an extent of 60%.

关键词： Manganese ferriteNanoparticlesPhenolPeroxydisulfateCatalytic oxidation

Comparison of stem volume estimates from terrestrial point clouds for mature Douglas-fir(Pseudotsuga menziessi(Mirb.)Franco)

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Information Processing in Agriculture 2023年第3期10卷 334-346页

作者： Rong Fang bogdan M.Strimbu Forest Engineering Resourcesand Management DepartmentOregon State UniversityCorvallisOR 97333 ORUSA

As a complement to traditional estimates of stem dimensions from numerical models,terrestrial light detection and ranging(Lidar)provides direct stem diameter and volume values using cylindrical models constructed from point *** study used two approaches to estimate total stem volume using Lidar and compared them with two empirical equations,one used by the Forest Inventory Analysis in the Pacific Northwest(FIA-PNW)and one based on a taper *** fitted point clouds of 10 Douglas-fir with three sets of cylinder models that are distinguished by their segment length(i.e.0.5 m,1 m,and 2 m),then developed three taper equations based on the point-cloud-based diameter estimated *** estimated the total stem volume of the tree with eight models:six-point cloudbased(*** taper and three cylinders)and two ***,we used simulations to extrapolate the volume estimations of various methods for different diameters at breast height(DBH)*** found that all the point-cloud-based taper equations were similar in their performance(R2¼0:94,RMSE=4.6 cm)and produced mean volume estimates greater than mean estimates of the existing *** cylinder models produced 11–16%greater mean volume estimates than the FIA-PNW estimate,with the 0.5 m segment length producing the greatest values,followed by the 1 m and 2 m segment *** simulated data suggested that the mean volume estimates of a given DBH class are different when using different computation *** revealed a combined effect of the computation methods and the DBH class on the mean volume *** conclude that the point-cloud-based taper equations,after being symmetrically calibrated,would be consistent with the regional stem volume estimates,whereas the cylinder models would be better in estimating individual stem *** constructing Lidar-based cylinder models in future applications,cylinder segment length would need to be adjusted to the length and DBH of the stem

关键词： Lidar Cylinder models Cylinder segment length Taper equations Forest inventory and analysis

Approximation of Integrable Functions by General Linear Operators of Their Fourier Series

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Acta Mathematica Sinica,English Series 2012年第6期28卷 1119-1134页

作者： Wodzimierz LENSKI bogdan SZAL Faculty of Mathematics Computer Science and Econometrics University of Zielona Gra

The pointwise estimates of the deviation Tn,A,Bf（·） -- f（·） in terms of moduli of continuity w. f and w. f there are proved. Analogical results on norm approximation with remarks and corollaries are also given. In the results there are used the essentially weaker conditions than these in [Mittal, M. L.： J. Math. Anal. Appl., 220, 434-450）（1998） Theorem 1, p. 4377.

关键词： Rate of approximation summability of Fourier series