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Objective: To analyze the risk factors of moderate and severe depression and to study the effect of high quality nursing on alleviating negative emotions and improving quality of life of patients with advanced lung cancer. Method:...
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Objective: To analyze the risk factors of moderate and severe depression and to study the effect of high quality nursing on alleviating negative emotions and improving quality of life of patients with advanced lung cancer. Method: A total of 100 patients with advanced lung cancer were collected from our hospital. According to the SDS score before the nursing, the patients with SDS score ≤62 and >52 were enrolled in the mild depression group, and those with SDS score >62 were enrolled in the moderate, severe depression group. The risk factors that make mild depression develop into moderate/severe depression were studied. The patients were randomly divided into a control group (n = 50) and an observation group (n = 50). The patients in both groups were given routine nursing, and those in the observation group received high quality nursing on the basis of routine nursing. The QOL-C30 was used to evaluate the changes in quality of life. The SDS (Self-Rating Depression Scale) and SAS (Self-rating Anxiety Scale) were used for assessing the degree of anxiety and depression. The incidence of complications and the nursing satisfaction of patients were observed. Results: The multi-factor Logistic regression results showed that gender (OR: 3.398, 95% CI: 1.020-11.324), course of disease (OR: 0.676, 95% CI: 0.562~0.814), educational level (OR: 2.073, 95% CI: 1.165-3.688), and family income (OR: 1.676, 95% CI: 9.020) were the influence factors of moderate and severe depression. The QOL-30 score in the observation group was higher than those in the control group after nursing, and the changes in the observation group were significantly greater than those in the control group (P<0.05). After nursing, the observation group had much lower SAS and SDS scores and significantly greater changes than the control group (P<0.5). The total incidence of complications in the control group was statistically greatly higher than that in the observation group (P<0.05). The nursing satisfaction in the control group was statistically much lower than that in the observation group (P<0.5). Conclusions: Gender, course of disease, educational level, and family income are independent influencing factors of moderate and severe depression. High quality nursing can effectively improve the anxiety and depression, and quality of life of patients, which is worthy of being popularized clinically.
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This paper reports the design and electrical characterization of a micromechanical disk resonator fabricated in single crystal silicon using a foundry SOI micromachining process. The microresonator has been selectively excited in ...
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This paper reports the design and electrical characterization of a micromechanical disk resonator fabricated in single crystal silicon using a foundry SOI micromachining process. The microresonator has been selectively excited in the radial extensional and the wine glass modes by reversing the polarity of the DC bias voltage applied on selected drive electrodes around the resonant structure. The quality factor of the resonator vibrating in the radial contour mode was 8000 at a resonant frequency of 6.34 MHz at pressure below 10mTorr vacuum. The highest measured quality factor of the resonator in the wine glass resonant mode was 1.9 x 10(6), using a DC bias voltage of 20V at about the same pressure in vacuum; the resonant frequency was 5.43 MHz and the lowest motional resistance measured was approximately 17 k Omega using a DC bias voltage of 60V applied across 2.7 mu m actuation gaps. This corresponds to a resonant frequency-quality factor (f-Q) product of 1.02 x 10(13), among the highest reported for single crystal silicon microresonators, and on par with the best quartz crystal resonators. The quality factor for the wine glass mode in air was approximately 10,000.
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A microcavity based on 12-fold photonic quasicrystals is achieved by the aid of alteration in the proposed structure. The central air hole is missed, and the three nearest surrounding holes radiuses and positions are modified in o...
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A microcavity based on 12-fold photonic quasicrystals is achieved by the aid of alteration in the proposed structure. The central air hole is missed, and the three nearest surrounding holes radiuses and positions are modified in order to optimize the Q-factor. In addition, special fine variations are imposed on the mentioned parameters to shift the resonant wavelength in the 1.55- and 1.31-m window bands. One of the predominant features of this microcavity structure is its capability of obtaining a Q-factor of about 2 106 in the 1.55-m wavelength window band, which is the most desirable wavelength in the optical telecommunication.
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Silicon microresonators are gradually penetrating the low- to mid-range markets for traditional timing and frequency references while generating many new opportunities along the way. A key characteristic requirement for resonators...
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Silicon microresonators are gradually penetrating the low- to mid-range markets for traditional timing and frequency references while generating many new opportunities along the way. A key characteristic requirement for resonators in such applications is attaining a high quality factor, which leads to lower insertion losses and improved oscillator stability. In this work, we demonstrate that it is possible to take advantage of the higher order resonant modes to push the performance limits of bulk resonators and achieve high quality factors while relaxing the packaging requirements. In particular, we study the effect of squeezed-film damping on the behaviour of high frequency, higher order resonant modes of bulk resonators. A micromachined bulk resonator was designed and fabricated such that its fundamental extensional mode as well as its first two Lamé modes could be excited and monitored. The resonator exhibited a high quality factor of 1.2 x 10~6 for its first Lamé mode at 8 MHz. When the second Lamé mode of the device at 16 MHz was excited, the measured f Q product was 1.37 x 10~(13) Hz. Experimental results from this device were used to verify a numerical model which was developed to study squeezed-film damping and its relation with device design and operating parameters. The model demonstrates that there are optimum operating parameters when a high frequency resonator is needed. The model can be used as a design tool to study the effects of electrode separation and structural thickness on squeezed-film damping for different modes.
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This paper reports on a technological process that combines copper as conductor, permalloy as magnetic core material, and polyimide as insulation material to complete a microinductor on glass with high inductance. The shape of the...
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This paper reports on a technological process that combines copper as conductor, permalloy as magnetic core material, and polyimide as insulation material to complete a microinductor on glass with high inductance. The shape of the magnetic core scheme was rectangular, of which the width of the long side and short side were 1.4 and 0.6 mm, respectively. The dimensions of the inductor are 3.86 mm$,times,$ 3.94 mm$,times, $90 $mu{hbox {m}}$ with coil width of 20 $mu{hbox {m}}$ and space of 35 $mu{hbox {m}}$. The results show that the maximum inductance is 4 $mu{hbox {H}}$ at 1 MHz, and the maximum quality factor (${Q}$-factor) is 1.5 at 2 MHz.
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We show that a compact microfiber coil resonator (MCR) can obtain very high quality factors by using two-layer structure with just a few turns of fiber. A record high quality factor, nearly $10^{6}$, is achieved from a three-turn two-layer MCR.
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Research on the regional difference characteristics and driving mechanisms of high-quality developmental evaluations of the construction industry under the constraint of carbon emissions has important practical significance for gu...
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Research on the regional difference characteristics and driving mechanisms of high-quality developmental evaluations of the construction industry under the constraint of carbon emissions has important practical significance for guiding the efficient development of the construction industry, alleviating the contradiction between economic and social development and resource conservation, low-carbon requirements in the process of rapid urbanization, and realizing regional coordinated development. Taking carbon emissions as unexpected output into the evaluation system of high-quality development of construction industry, this paper studies the spatial–temporal differentiation characteristics, dynamic trend evolution and its driving factors of high-quality development of China’s construction industry from 2006 to 2021 by using the SE-SBM model of unexpected output, GML index analysis and grey correlation model. The research results show that (1) from 2006 to 2021, the high-quality development of the construction industry generally fluctuated in a sinusoidal function pattern, and the high-quality development level of the construction industry in China was improved as a whole. It is manifested in the coexistence of regional imbalance and spatial correlation. High-efficiency provinces are concentrated in the eastern coastal areas, forming an obvious cluster effect; however, the radiation-driving effect is weak. (2) The regional difference in technological scale change is the largest, which is the main reason for the difference in regional total factor production growth rate; the contribution of technological progress to the difference in total factor growth rate is also relatively large. Generally speaking, technological factors are the key to reducing the difference of total factor growth rate between regions. (3) Urbanization level, carbon emission constraints, government regulation, scientific and technological R & D investment and industrial structure upgrading are the main driving factors that affect the spatiotemporal differentiation and evolution of high-quality development of the construction industry.
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The development of biological communities is an important research issue regarding biological quality elements. However, it is still uncertain how different organism groups and their metrics are affected by different environmental...
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The development of biological communities is an important research issue regarding biological quality elements. However, it is still uncertain how different organism groups and their metrics are affected by different environmental factors. A study of high-quality sites of medium-sized lowland streams typical for Latvia (ecoregion Baltic province) was carried out with an emphasis on hydrological and hydromorphological characteristics. The investigations were carried out within the STAR project using the project designated standard methods. We found that the level of saprobity according to benthic macroinvertebrates was mainly linked with substrate type and stream depth. The trophic diatom index for diatoms on a soft substratum had a negative correlation with altitude and a positive correlation with distance from the source and also stream depth. There were no significant correlations between macrophyte trophic indices and environmental factors associated with stream hydrological conditions. The European fish index was influenced mainly by stream width and distance from the source, which agrees with the results of other researchers. In general, a direct or indirect role of hydrological and hydromorphological factors was evident in the forming of communities characterizing stream ecological quality.
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摘要 :
The development of biological communities is an important research issue regarding biological quality elements. However, it is still uncertain how different organism groups and their metrics are affected by different environmental...
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The development of biological communities is an important research issue regarding biological quality elements. However, it is still uncertain how different organism groups and their metrics are affected by different environmental factors. A study of high-quality sites of medium-sized lowland streams typical for Latvia (ecoregion Baltic province) was carried out with an emphasis on hydrological and hydromorphological characteristics. The investigations were carried out within the STAR project using the project designated standard methods. We found that the level of saprobity according to benthic macroinvertebrates was mainly linked with substrate type and stream depth. The trophic diatom index for diatoms on a soft substratum had a negative correlation with altitude and a positive correlation with distance from the source and also stream depth. There were no significant correlations between macrophyte trophic indices and environmental factors associated with stream hydrological conditions. The European fish index was influenced mainly by stream width and distance from the source, which agrees with the results of other researchers, In general, a direct or indirect role of hydrological and hydromorphological factors was evident in the forming of communities characterizing stream ecological quality.
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A microwave planar resonator with a very high quality factor is presented for sensing applications. The proposed resonator uses an active feedback loop with a microwave amplifier to generate negative resistance to compensate the r...
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A microwave planar resonator with a very high quality factor is presented for sensing applications. The proposed resonator uses an active feedback loop with a microwave amplifier to generate negative resistance to compensate the resonator's loss and increases the loaded quality factor of the system. This high quality resonator is based on a planar microstrip resonator with a primary quality factor of 200. The active loop technique increases the primary quality factor up to 15,480 with no other material in its surrounding environment when measured at 1.55 GHz resonance frequency. The high quality factor of the designed resonator provides very high resolution for detection of permittivity variation in its ambient environment with a theoretical resolution of 0.1 ppb (10(-10)). It is experimentally demonstrated that the small permittivity variations such as that of foam (with permittivity very close to air) can be detected. The circuit demonstrated a resolution of 26 dB in amplitude for a 1 MHz variation in the frequency domain. (C) 2015 Elsevier B.V. All rights reserved.
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