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排序方式: 共有189条查询结果,搜索用时 15 毫秒
1.
Christian Veauthier Gunnar Gaede Helena Radbruch Klaus-Dieter Wernecke Friedemann Paul 《International journal of molecular sciences》2015,16(7):16514-16528
Quality of Life (QoL) is decreased in multiple sclerosis (MS), but studies about the impact of sleep disorders (SD) on health-related quality of Life (HRQoL) are lacking. From our original cohort, a cross-sectional polysomnographic (PSG) study in consecutive MS patients, we retrospectively analysed the previously unpublished data of the Nottingham Health Profile (NHP). Those MS patients suffering from sleep disorders (n = 49) showed significantly lower HRQoL compared to MS patients without sleep disorders (n = 17). Subsequently, we classified the patients into four subgroups: insomnia (n = 17), restless-legs syndrome, periodic limb movement disorder and SD due to leg pain (n = 24), obstructive sleep apnea (n = 8) and patients without sleep disorder (n = 17). OSA and insomnia patients showed significantly higher NHP values and decreased HRQoL not only for the sleep subscale but also for the “energy” and “emotional” area of the NHP. In addition, OSA patients also showed increased NHP values in the “physical abilities” area. Interestingly, we did not find a correlation between the objective PSG parameters and the subjective sleep items of the NHP. However, this study demonstrates that sleep disorders can reduce HRQoL in MS patients and should be considered as an important confounder in all studies investigating HRQoL in MS. 相似文献
2.
M. Sadeghi A. Jauhiainen B. Liss E.Ö. Sveinbjörnsson O. Engström 《Solid-state electronics》1998,42(12):2233-2238
We simulate the charge carrier traffic between the energy bands and the interface states in structures like Al/SiO2/6H–SiC, Al/diamond/Si and Al/SIPOS/Si to explain their high frequency capacitance–voltage behavior. The structures have in common that traditional electrical measurement techniques performed at room temperature are prone to thermal non-equilibrium effects. This can result in large errors in the interface data extracted from such studies when thermal equilibrium conditions are assumed. In this work, high frequency capacitance–voltage data are compared to numerical simulations which include such thermal non-equilibrium conditions to enable more accurate estimates of interface state parameters in above-mentioned structures. 相似文献
3.
With the establishment of the Polytechnical Patent Library at the Ilmenau Institute of Technology in April 1981, an efficient patent information centre was set up for the southern districts of the German Democratic Republic (Suhl, Gera, Erfurt). First, the manual methods of search were complemented by two subsystems of the automized patent pre-search system, namely the selective dissemination of information and the field-oriented patent family service. In 1985, the set-up of patent databanks was begun. The present paper explains their specific features, thus complementing the conception of the patent pre-search system presented in previous papers.(1,2) The information services are rendered by order of the Inventions and Patent Office. 相似文献
4.
A 0.3% Au/Al2O3 catalyst prepared by the incipient wetness (IW) method was investigated in the continuous-flow liquid-phase glucose oxidation. Therefore, a continuous stirred tank reactor (CSTR) system equipped with an ultrasonic separator was used. The continuous-flow glucose oxidation was carried out at 40 °C, pH 9 and 1 bar oxygen partial pressure. Residence time and glucose concentration were varied. The IW gold catalyst showed very high activity and selectivity to gluconic acid within its 110 days of operation and, thus, an excellent long-term stability. Even after severe microbial contaminations of the catalyst, its activity could be completely restored by in situ regeneration with 2-propanol. 相似文献
5.
Hui Ma Klaus-Dieter Schewe Bernhard Thalheim Qing Wang 《Service Oriented Computing and Applications》2012,6(3):189-205
Large-scale service-oriented computing is based on the idea that services from various servers are combined into one distributed application. Referring to a collection of services on one server as a ??service cloud??, the problem investigated in this paper is to define formal high-level specifications of such distributed applications and to enable the location of suitable services for them. Based on the language-independent model of Abstract State Services (AS2s), which serves as a universal integrated model for data and software as services, we extend AS2s by high-level action schemes called ??plots?? as a means to specify permitted sequences of service operations. On these grounds, we develop a model for service mediators, that is, specifications of composed services in which service slots have to be filled by actual services, and investigate matching conditions for slots of mediators and services. For a services to match a slot in a mediator, a (generalised) projection of the mediator must comply with the plot of the service. Furthermore, the service must be semantically adequate, which requires the use of a service ontology. 相似文献
6.
7.
Boniol Frédéric Wiels Virginie Aït-Ameur Yamine Schewe Klaus-Dieter 《International Journal on Software Tools for Technology Transfer (STTT)》2017,19(2):133-140
International Journal on Software Tools for Technology Transfer - 相似文献
8.
Chen Gang Liss Klaus-Dieter Cao Peng Lu Xin Qu Xuanhui 《Metallurgical and Materials Transactions B》2019,50(1):429-437
Metallurgical and Materials Transactions B - Sintering behaviors of two types of powder compact, i.e., Ti/Al and TiH2/Al, under vacuum were studied using in situ neutron diffraction, in situ... 相似文献
9.
Photoreduction and evolution of mercury from seawater 总被引:1,自引:0,他引:1
The photoreduction of mercury (Hg2+ to Hg0) in natural seawater was investigated by means of a radiotracer (203Hg2+) solution exposed to natural and simulated sunlight. Different light regimes (dark, natural daylight, and a solar simulator), and dissolved organic carbon (DOC) levels from commercially available humic acids concentrations, were tested in the laboratory to evaluate the possibility of occurrence of the reaction in the environment. The natural seawater prepared accordingly to each experimental condition was continuously purged of the Hg0 formed, which was then re-oxidised in an acid trap and determined. The use of a solar simulator permitted the test of light intensity and wavelength dependence of the process under investigation. The reaction is dependent on the concentration of DOC in the experimental solution, increasing light intensity and decreasing wavelength. Reduction rates were in the range of 0.04-2.2% h(-1) for the DOC concentrations and light regimes tested. The process might have geochemical implications for the cycling of mercury around the air-sea interface. 相似文献
10.