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大功率GTO逆变器的无耗散吸收电路

机车电传动 1990年第5期 46-52页

作者： joachim holtz 徐瑛

一种新型的大功率GTQ逆变器吸收电路仅由理想化的、不产生损耗的无源元件组成。通态和断态吸收器中存储的能量在开关过程中完全被吸收。这种吸收电路一般用于保证GTO器件的正常开关条件,以避免动态超载和关断故障。

关键词：逆变器无耗散吸收器 GTO

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联邦德国光电所的环境遥感应用研究

遥感技术与应用 1990年第4期 24-27页

作者： Hans joachim holtz 王乙欣

联邦德国航空与航天局(DLR)的光电所于1976年2月1日成立。建所两年后,由所长成立了以光学遥感和红外技术为中心的研究室。相继又在业务同行大气物理所与高频技术所合作下,建立了激光技术传感器室,并进行了应用遥感技术成果的工作。随着... 详细信息

联邦德国航空与航天局(DLR)的光电所于1976年2月1日成立。建所两年后,由所长成立了以光学遥感和红外技术为中心的研究室。相继又在业务同行大气物理所与高频技术所合作下,建立了激光技术传感器室,并进行了应用遥感技术成果的工作。随着DLR一系列地面观察计划的实施,1981年底该所又建立了从事行星表面特征研究的行星探测室。到目前,已发展成为有激光技术、红外技术、光学探测、行星探测等多学科的研究所,所下属又划分地球观测系统

关键词：地球观察重要参量图像处理系统解译西德德国应用光学近红外波罗的海 DLR 试验区多光谱光学领域

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联邦德国高频技术所的雷达遥感研究

遥感技术与应用 1990年第3期 19-22页

作者： Hans joachim' holtz 王乙欣

高频技术所是联邦德国航空与航天局(DLR)从事信息技术和遥感的科研所之一,建立于1978年12月1日。然而就其工作领域而言,已有相当长的历史。它的前身,是由*** Dieckmann于1908年私人开办的“无线电电报和飞机电讯实验学校”。到1937年,... 详细信息

高频技术所是联邦德国航空与航天局(DLR)从事信息技术和遥感的科研所之一,建立于1978年12月1日。然而就其工作领域而言,已有相当长的历史。它的前身,是由*** Dieckmann于1908年私人开办的“无线电电报和飞机电讯实验学校”。到1937年,即包含有无线电电报和航空电子学等专业领域,已具有现代研究所的雏形;于是成立了飞行无线电研究所。相继几年,又开展了部分微波领域的工作。直至1978年

关键词：合成孔径雷达传感器波段分辩率相干机载侧视雷达侧视雷达换能器电子技术 SAR 高频技术联邦德国

Apoer2/Lrp8:the undercover cop of synaptic homeostasis

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Neural Regeneration Research 2024年第12期19卷 2563-2564页

作者： Gordon C.Werthmann joachim Herz Department of Molecular Genetics and Center for Translational Neurodegeneration Research University of Texas Southwestern Medical Center at DallasDallasTXUSA Department of Neuroscience Department of Neurology University of Texas Southwestern Medical Center at Dallas DallasTXUSA

Apolipoprotein E receptor 2(ApoER2)is a receptor for the protein ApoE,the most common genetic risk factor for late-onset Alzheimer's disease(AD).It is also a key modulator of syna ptic homeostasis,in part through its effect on the expression of neuronal genes including those implicated in AD and other neuropsychiatric *** this perspective,we highlight several genes affected by ApoER2 and its alternatively spliced forms and how aberrant expression can be rescued by the reintroduction of the ApoER2 intracellular domain in the mouse hippocampus.

关键词： homeostasis ApoE Alzheimer

Does HSP27 injection induce glaucoma damage in mice?

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Neural Regeneration Research 2024年第11期19卷 2347-2348页

作者： Stephanie C.joachim Sabrina Reinehr Experimental Eye Research Institute University Eye HospitalRuhr-University BochumBochumGermany

In a further aging society,excellent eyesight is an integral part of overall well-being and quality of *** good vision is crucial to maintaining mobility,independence,and mental *** can be several reasons for visual impairment in elderly people,these include age-related macular degeneration,the leading cause of vision loss among older adults,cataract,glaucoma,diabetic retinopathy,retinal detachment,and others.

关键词： HSP27 injection damage

Prevalence and intensity of urinary schistosomiasis and soil-transmitted helminths among women of reproductive age in Mwaluphamba,Kwale

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Asian Pacific Journal of Tropical Medicine 2024年第2期17卷 71-83页

作者： Samuel M.Ngui Joseph M.Mwangangi joachim Richter Josephine W.Ngunjiri Department of Biological Sciences University of EmbuKenya Medical Entomology Kenya Medical Research Institute(KEMRI)Center for Geographic Medicine Research Coast KilifiKenya Institute of International Health Global Health CenterCharitéUniversity MedicineBerlinCorporate Member of Free University and Humboldt University and Berlin Institute of HealthBerlinGermany Swiss Tropical and Public Health Institute BaselSwitzerland Tropical and Infectious Diseases Department of Biological sciencesUniversity of EmbuKenya

Objective:To assess the epidemiology of urinary schistosomiasis and soil-transmitted helminthiasis among women of reproductive age in Mwaluphamba,Kwale County,***:A community-based cross-sectional study design was employed to randomly sample 422 women of reproductive age(15-<50 years)from four villages in Mwaluphamba *** specimens were collected and examined using the Kato-Katz method,while filtration technique was used to analyze urine ***’sociodemographic details were obtained using a standardized ***:Urinary schistosomiasis prevalence was at 4.7%(20/422,95%CI 2.8%-6.9%)while the prevalence of soil-transmitted helminthiasis infection was 4.5%(19/422,95%CI 2.6%-6.7%).The infection intensities of urinary schistosomiasis among the study participants ranged from 1 to 120 eggs/10 mL of urine with median egg count of 18.45 eggs/10 *** patients were diagnosed with light infection,of 56.16 egg/gram and 48.48 egg/gram for Trichuris trichiura and hookworms,*** without latrines had 15.7 times higher risk of having urinary schistosomiasis compared to those with a ***,use of surface water(aOR=1.0,95%CI 0.2-1.4,P=0.010)and crossing the river to go to a place(aOR=1.1,95%CI 0.3-1.6,P=0.009)were statistically significant risk factors for getting urinary *** bivariable regression analysis,defecating around the water source(OR=4.3,95%CI 1.5-12.9)had a statistically significant association with the prevalence of soil-transmitted helminthiasis(P=0.008).Conclusions:This study has given an insight on the prevalence and intensity of urinary schistosomiasis and soil-transmitted helminthiasis in Mwaluphamba location that form a basis for strengthening the control and elimination programmes for these neglected tropical diseases.

关键词： Urinary schistosomiasis Prevalence Soiltransmitted helminths Mwaluphamba

Building Blocks of Nature

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Journal of High Energy Physics, Gravitation and Cosmology 2024年第3期10卷 1226-1303页

作者： Hans joachim Dudek Retired Auf dem Komp Germany

By means of a representation of the elementary objects by the Lagrange density and by the commutators of the communication relations, correlations can be formed using the Fourier transform, which under the conditions of the Hamilton principle, describes correlation structures of the elementary objects with oscillator properties. The correlation structures obtained in this way are characterized by physical information, the essential component of which is the action. The correlation structures describe the physical properties and their interactions under the sole condition of the Hamilton’s principle. The structure, the properties and the interactions of elementary objects can be led back in this way to a fundamental four dimensional structure, which is therefore in their different modifications the building block of nature. With the presented method, an alternative interpretation of elementary physical effects to quantum mechanics is obtained. This report provides an overview of the fundamentals and statements of physical information theory and its consequences for understanding the nature of elementary objects.

关键词： Hamilton Principle as Global Law in Physics Physical Information Generated by Action Correlation Space Mass and Charge Formation Interpretation of Physical Effects

The effect of Laves phases and nano-precipitates on the electrochemical corrosion resistance of Mg-Al-Ca alloys under alkaline conditions

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Journal of Magnesium and Alloys 2024年第6期12卷 2447-2461页

作者： Markus Felten Veronika Chaineux Siyuan Zhang Ali Tehranchi Tilmann Hickel Christina Scheu Joshua Spille Marta Lipińska-Chwałek joachim Mayer Benjamin Berkels Marcus Hans Imke Greving Silja Flenner Sandra Sefa Daniela Zander Chair of Corrosion and Corrosion Protection RWTH Aachen UniversityAachen 52072 Germany Max-Planck-Institut für Eisenforschung GmbH Düsseldorf 40237 Germany Central Facility for Electron Microscopy RWTH Aachen UniversityAachen 52074 Germany Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons Forschungszentrum Jülich GmbHJülich 52428Germany Mathematical Image and Signal Processing Aachen Institute for Advanced Study in Computational Engineering ScienceRWTH Aachen UniversityAachen 52062 Germany Materials Chemistry RWTH Aachen UniversityAachen 52074 Germany Institute of Materials Physics Helmholtz-Zentrum HereonGeesthacht 21502 Germany

The electrochemical corrosion mechanisms of Mg alloys were extensively studied in previous investigations of different chemical com-positions,modified surface states and various electrolyte ***,recent research focused on the active state of Mg dissolution,leading to unresolved effects of secondary phases adjacent to a stableα-solid solution passive *** present study investigates the fundamental electrochemical corrosion mechanisms of three different Laves phases with varying phase morphologies and phase fractions in the passive state of Mg-Al-Ca *** microstructure was characterized by(transmission-)electron microscopy and synchrotron-based transmission X-ray *** electrochemical corrosion resistance was determined with a standard three-electrode setup and advanced in-situ flow cell measurements.A new electrochemical activity sequence(C15>C36>α-Mg>C14)was obtained,as a result of a stable passive layer formation on theα-solid ***,nm-scale Mg-rich precipitates were identified within the Laves phases,which tend to inhibit the corrosion kinetics.

关键词： Laves phase STEM Magnesium Corrosion Passive layer

Effect of the Implementation of Emonc in the Reduction of Maternal Deaths in the Department of Collines from 2018 to 2022

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Open Journal of Obstetrics and Gynecology 2024年第2期14卷 259-266页

作者： joachim Aifa Florence Abraham Roger Klikpezo Edgard-Marius Ouendo Badirou Aguemon Faculty of Health Sciences of Cotonou Department of Public Health Cotonou Benin Nursing and Midwifery Training Institute University of Parakou Parakou Benin Assistant in Gynecology-Obstetrics FM-University of Parakou Parakou Benin Full Professor of Public Health and Epidemiology Ouidah Regional Institute of Public Health Ouidah Benin Full Professor of Public Health Faculty of Health Sciences of Cotonou Cotonou Benin

Background: Maternal and neonatal mortality remains a public health problem in Benin. Each year, approximately 1500 maternal deaths and more than 12,000 newborn deaths are recorded there. In order to correct the situation, strategies such as the implementation of Emergency Obstetric and Neonatal Care (EmONC) were initiated. Objective: Determine the rates of maternal deaths in EmONC centers in the Collines department from 2018 to 2022. Framework and Methods: The study took place in Benin precisely in the Collines department. This was a descriptive cross-sectional study. Data collection was carried out during the first two weeks of January 2023 and covered data from the 09 Basic Emergency Obstetric and Neonatal Care centers (BEMONC) and the Obstetric and Neonatal Care centers of Complete Emergency (CEmONC) of the Collines department from 2018 to 2022. An estimate of the ratios of maternal deaths occurring at the level of the EmONC centers of the Collines department from 2018-2022 was carried out followed by constructive suggestions. Results: During the five years (2018 to 2022), the Collines department recorded 42,582 live births with 148 maternal deaths, i.e. a ratio of 348 maternal deaths per 100,000 live births. Between 2018 and 2022, the highest maternal death ratio was recorded in 2019, i.e. 425 maternal deaths per 100,000 live births for all EmONC centers and 607 maternal deaths per 100,000 live births in EmONC centers. The highest maternal death ratio at the BEmONC center level was recorded in 2020, i.e. 129 maternal deaths per 100,000 births. Conclusion: These results suggest that despite the implementation of EmONC in the Collines department, maternal deaths have not decreased. To improve these outcomes for a reduction in maternal deaths, urgent action must be taken.

关键词： Effect BEmONC CEmONC Maternal deaths Department of Collines