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运载火箭和人造地球卫星发动机装置用容器和壳体的制造方法

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国外导弹与航天运载器 1992年第11期 74-78页

作者： radtke w Krings H. 张振广

本文扼要介绍了宇航火箭系统发动机装置用容器和壳体的制造方法,使用此种先进工艺,可以制造出质量轻、可靠性好且廉价的多种产品,满足了宇航系统的特殊要求。

关键词：远地点发动机贮箱运载火箭

Phlegmonous appendicitis in children is characterized by eosinophilia in white blood cell counts

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world Journal of Pediatrics 2018年第5期14卷 504-509页

作者： Maximiliane I.Minderjahn Dag Schadlich Josephine radtke Karin Rothe Marc Reismann Department of Pediatric Surgery Charité–Universitatsmedizin BerlinAugustenburger Platz 113353 BerlinGermany

Background Phlegmonous and complicated appendicitis represent independent entities depending on hereditary immuno-logical mechanisms. However, clinically there are no means to distinguish uncomplicated phlegmonous from complicated appendicitis. The ability to distinguish these two forms of appendicitis is relevant as current attempts are to treat both forms of the disease differently. The aim of the present study was to investigate differences in white blood cell counts (wBCs) in these conditions to identify areas of interest for future molecular studies. Methods white blood cell counts of patients aged between 7 and 14 years who underwent appendectomy from January 2008 to June 2016 were investigated with special reference to particular cellular subpopulations. Results A total of 647 children were included in the study. within distinct inflammatory patterns, significant eosinophilia and basophilia were found in phlegmonous inflammation compared with complicated inflammation (0.11±0.19×109/L vs. 0.046±0.104×109/L, Pwith complicated disease, phlegmonous appendicitis seems to depend primarily on eosinophil inflam-mation. This observation is stable over time and indicates a direction for investigation of underlying genetic prerequisites.

关键词： Appendicitis Children Eosinophil granulocytes Immunology

Cardiopulmonary Response to Exercise at High Altitude in Adolescents with Congenital Heart Disease

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Congenital Heart Disease 2021年第6期16卷 597-608页

作者： Lukas Minder Markus Schwerzmann Thomas radtke Hugo Saner Prisca Eser Matthias wilhelm Jean-Paul Schmid Department of Cardiology Bern University Hospital and University of BernBernSwitzerland Center for Congenital Heart Disease Department of CardiologyBern University Hospital and University of BernBernSwitzerland Epidemiology Biostatistics and Prevention InstituteUniversity of ZurichZurichSwitzerland Department of Cardiology Clinic BarmelweidBarmelweidSwitzerland

Objective:To extend our knowledge on tolerance of acute high-altitude exposure and hemodynamic response to exercise in adolescents with congenital heart disease(AscCHD)without meaningful clinical or functional ***:A symptom limited cardiopulmonary exercise stress test and a non-invasive cardiac output measurement during steady state exercise were performed at 540 m and at 3454 m *** of acute mountain sickness were ***:we recruited 21 healthy controls and 16 AscCHD(59%male,mean age 14.7±1.1 years).Three subjects(2 controls,1 AscCHD)presented light symptoms of acute mountain sickness(dizziness and headache).During the symptom limited exercise test at lowland,control subjects showed a significantly higher power to weight index(3.5±0.6 w/kg vs.3.0±0.7 w/kg,pwer to weight index only remained significantly higher in the control group(2.8±0.6 w/kg vs.2.6±0.6 w/kg,pw(PBF)at lowland showed no difference between the control and the AscCHD group,neither at rest(5.4±0.8 l/min vs.5.1±0.9 l/min,p=0.308),nor during the steady state test(10.6±2.4 l/min vs.10.5±2.0 l/min,p=0.825).At high altitude,PBF increased by 110%and 112%,respectively(12.8±2.32 l/min vs.12.5±3.0 l/min;intergroup difference:p=0.986).Conclusions:High altitude exposure was well tolerated in an unselected group of *** significant difference in the cardio-pulmonary adaptation to a control group was noted during a steady state *** of minor acute mountain sickness did occur,which should however not be misinterpreted as signs of hemodynamic maladaptation.

关键词： Adolescents with congenital heart disease high altitude non-invasive cardiac output measurement exercise

Electro-anatomic mapping of the right atrium:anatomic abnormality is an important substrate

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Chinese Medical Journal 2003年第3期116卷 22-26页

作者：方丕华 Nancy L radtke Tony w Simmons wesley K Haisty Jr Karthik Ramaswamy David M.Fitzgerald Department of Cardiology Fuwai HospitalChinese Academy of Medical SciencesBeijing 100037China wake Forest University School of Medicine Winston-Salem North Carolina 27157 USA

Objective To map and compare the right atrium in patients with AF to those with atrioventricular nodal reentrant tachycardias (AVNRT, as control group) and to investigate the anatomical and electrophysiological abnormality of the right atrium in *** The anatomy and electrophysiology of right atrium and cavotricuspid isthmus were evaluated in 20 patients with AF (16 M/4 F, mean age 55.9±10.68 years) and 26 patients with AVNRT (9 M/17 F, mean age 47.50±19.56 years) during coronary sinus pacing at 600 ms prior to ablation with electro-anatomical mapping system. Right atrial volume (RAV), the length and width of cavotricuspid isthmus (IsL, Isw), unipolar and bipolar voltage in the right atrium (UniV-RA, BiV-RA) were measured and compared between patients with AF and those with AVNRT. Results RAV, IsL, Isw, UniV-RA, and BiV-RA were 143.22±40.72 vs 104.35±21.06 ml, 39.31±8.10 vs 32.42±9.77 mm, 30.54±7.48 vs 23.15±6.61 mm, 1.96±1.24 vs 1.53±0.91 mv and 1.47±1.47 vs 1.29±1.12 mv in AF and AVNRT *** The right atrial volume is larger; both the length and width of cavotricuspid isthmus are greater. Unipolar and bipolar voltages in the right atrium are higher in AF than in AVNRT, suggesting that the enlarged right atrium, increased length and width of cavotricuspid isthmus, and concomitant atrial hypertrophy are important substrates for initiation and perpetuation of typical AF.

关键词： atrial flutter right atrium electrophysiology

Late Quaternary environmental changes in the Taklamakan Desert,western China,inferred from OSL-dated lacustrine and aeolian deposits

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Late Quaternary environmental changes in the Taklamakan Dese...

Densification of Lithium Disilicate under High Pressure Investigated by XPS

中国科学院地质与地球物理研究所2006学术年会

作者： Frank Preusser Ulrich radtke Institute of Geological Sciences University ofBernBaltzerstrasse 1-3CH-3012 BernSwitzerland Department of Geography University of CologneAlbertus-Magnus-PlatzD-50923Ko¨ln(Cologne)Germany

Sediment records from the Tarim Basin of western China are of great importance for understanding Late Quaternary climatic variability in Central Asia.A chronology of aeolian and lacustrine deposits from the centre and southern margin of the Taklamakan Desert,central Tarim Basin,has been established using optical dating *** variations in humidity during the last 40,000 a in this extremely arid inland basin have been *** sediments were deposited in the centre of the Taklamakan during two periods of wetter than present day conditions at around 2000 and 30,000 a *** humid period is recorded between 40,000 and 30,000 a *** processes,the development of large migrating *** dominated during periods of more arid *** wedges at the southern margin of the Taklamakan are dated at ca 40,000 a and ca 18,000 a,and imply a *** temperature decrease in that area. Sedimentological evidence for a late Holocene humid period are consistent with records in ancient Chinese *** nvironmental conditions in the past within the Taklamakan,as indicated by the presence of lacustrine deposits,are also supported by data from adjacent *** is assumed that changes of global westerlies and of the mobile polar high triggered the uctuations of precipitation in the study ***,variations in temperature in the Taklamakan Desert are presumed to be mainly controlled by the intensity of the winter monsoon.

关键词： dune landscape change Late Quaternary Taklamkan

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Open Journal of Inorganic Non 2013年第2期3卷 15-21页

作者： Silvio Buchner Cláudio radtke Naira Maria Balzaretti Institute of Chemistry Universidade Federal do Rio Grande do Sul Porto Alegre Brazil Institute of Physics Universidade Federal do Rio Grande do Sul Porto Alegre Brazil

The aim of this work was to investigate by X-ray photoelectron spectroscopy the effect of high pressure on the chemical environments of Si 2p, O 1s and Li 1s in lithium disilicate glass ceramic with stoichiometric composition Li2O·2SiO2 (LS2). A group of samples was processed at 2.5 GPa, 4 GPa and 7.7 GPa at room temperature and a second group was crystallized under high pressure and high temperature. Large shifts of the binding energy toward higher energies were observed in the X-ray photoelectron spectroscopy spectra for samples of the first group after densification at 2.5 and 4 GPa. For samples processed at 7.7 Gpa, the major component of the binding energy for the Si 2p environment remained practically unchanged compared to the pristine sample but new components, with smaller intensities, appeared in the spectra, indicating the existence of distinct Q-species induced by high pressure. This behavior may be related to changes in the number of bridged and non-bridged oxygen atoms in the glass structure. The results for the second group of samples, crystallized under high pressure, showed evidences of three binding energies for the O atoms, one of them related to non-bridged and two of them to bridged O atoms.

关键词： XPS Glass Ceramic Lithium Disilicate High Pressure Binding Energy

Traditional Chinese Herb 22 Improves wound Healing in An ex vivo Porcine Skin Model

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Traditional Chinese Herb 22 Improves Wound Healing in An ex ...

第十四届全国中药和天然药物学术研讨会

作者： Janine radtke Thomas Friedemann Roland Salchow Sven Schroeder University Medical Center Hamburg Eppendorf

＜正＞Impaired wound healing is a serious problem reducing patient’s life quality and causing high costs for the healthcare *** dysregulated wound regeneration may result from various causes as metabolic and vascular diseases or infection.A satisfactory drug that promotes several healing stages to remodel injured skin and prevent the formation of chronic

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锌铝合金及其镀层

有色矿冶 1989年第1期5卷 48-50,54页

作者： radtke Schrade F. 林沿延

一、技术范围本发明旨在应用普通薄钢板的镀锌技术。多年来,锌作为保护层的用途已为人所知。因此,很长时间以来,无论是连续性,还是一次性的热浸镀锌一直用于各种钢产品的防腐。

关键词：薄钢板锌铝合金镀层金属保护

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镉的新用途及其研究

中国有色冶金 1985年第9期 26-28页

作者： S.F.radtke

为了扩大我国镉的市场,发展镉材技术,本刊组织了一批有关镉的使用技术镉市场的译文,分期连载,以飨读者

关键词：硫酸锡太阳电池黄色颜料