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电磁干扰（EMI）抑制技术是保证航天器各功能单元正常运行互不干扰的重要技术。开关电源是航天器内电磁干扰的主要来源。基于对星载开关电源DC/DC和负载点电源POL电磁干扰特性的测试结果，提出了一种星载二次电源系统的电磁干扰抑制方案，采用高稳晶振+控制器+时钟管理芯片硬件与软件设计结合的方法，利用高稳晶振为电源模块提供稳定时钟，通过控制器实现时钟管理芯片的分频和时钟分配。系统以非同步方式上电，软件控制时钟管理芯片输出电源模块同步时钟，然后软件打开时钟同步的使能，实现星载开关电源（DC/DC和POL）开关频率的外同步，最后通过测量输出电压频谱的方法验证了电磁干扰抑制方案的有效性。

This paper summarized the nursing experience of a child with electrolyte disturbance after craniopharyngioma resection. Postoperative children with craniopharyngioma are prone to electrolyte disorders, and children in serious condition may have demyelination and other symptoms, directly affecting the prognosis. Medical staff should take close observation of the vital signs and consciousness, accurately record the fluid intake and output, monitor changes of body temperature, and reduce secondary damage caused by electrolyte disorders. The diet nursing should be carried out in combination with Traditional Chinese Medicine emotional nursing. (本文总结1例儿童颅咽管瘤切除术后患儿出现电解质紊乱的护理经验。颅咽管瘤切除术后患儿容易出现电解质紊乱, 严重者可出现脱髓鞘等症状, 直接影响预后效果。医护人员应严密观察患者生命体征和意识, 准确记录出入量, 监测体温变化, 减少电解质紊乱带来的继发损害; 同时给予饮食护理, 实施中医情志护理。)

Objective To observe the curative effect of massage technique and acupoint application in treating constipation after stroke. Methods Totally 78 patients with acute constipation after cerebral infarction were selected, divided into control group, acupoint application group (Acupoint application group) and massage treatment group (massage group), among which 22 patients in control group, 31 patients in application group and 25 patients in massage group. The control group patients received integrative medicine treatment and nursing. On this basis, the massage group patients received acupoint massage technique; the Acupoint application group patients were given Traditional Chinese Medicine Shenque acupoint application. The defecation situation of the three groups was observed daily for 2 weeks, and the defecation frequency of the three groups was compared with the 7th and 14th day of treatment. Barthel Index was used to evaluate the activity of daily living of patients before discharge from hospital. Results In the first week of treatment, the defecation frequency was higher in the massage group than that in the massage group and control group (P

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Copyright of Feed Industry is the property of Liaoning Provincial Institute of Agricultural Mechanization and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Telecommunications Science is the property of Beijing Xintong Media Co., Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Railway Science & Engineering is the property of Journal of Railway Science & Engineering Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of China Rubber Industry is the property of Editorial Office of China Rubber Industry and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Agro-Environment Science is the property of Journal of Agro-Environment Science Editorial Board and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Resources Development & Market is the property of Sichuan Resource Development & Market Magazine Co., Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Journal of Geological Hazard & Control is the property of China Institute of Geological Environmental Monitoring (CIGEM) Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Systems Engineering & Electronics is the property of Journal of Systems Engineering & Electronics Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Bulletin of the Chinese Ceramic Society is the property of Bulletin of the Chinese Ceramic Society Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The implementation of the rural revitalization strategy focuses on the prosperity of industries, and the effective combination of industry, academia, and research is an effective means and important measure to promote the high-quality development of digital fisheries. By sorting out the policy environment for the high-quality development of central and local fisheries under the current background of rural revitalization, taking Taizhou City as an example, this paper summarizes and analyzes the current situation of fisheries and digital fisheries development, and introduces typical models of industry academia research to assist in the high-quality development of digital fisheries. This paper provides a certain reference for the construction of modern and beautiful fishing villages under the background of rural revitalization. [ABSTRACT FROM AUTHOR]

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Objective To explore the relationship between maternal childbearing age and congenital heart disease (CHD) in offspring. Methods Based on the CHD screening data of live births born in midwifery institutions in Liuzhou area of Guangxi Zhuang Autonomous Region from January 1, 2020 to December 31, 2022, they were divided into CHD group (n=1 117) and non-CHD group (n=107 458). The data of the two groups were matched by propensity score matching method. The childbearing age of mothers was divided into five groups: < 20 years old, 20 years old, 24 years old, 25 years old, 29 years old, 30 years old, 34 years old, and ≥ 35 years old. The multivariate logistic regression model was used to analyze the relationship between mothers and their offspring with congenital heart disease in different childbirth age groups. The restricted cubic spline curve was used to further analyze the nonlinear relationship between maternal childbearing age and offspring CHD. Results There were 1 117 cases in CHD group and 3 148 cases in control group without CHD. The corrected Logistic regression model analysis showed that the risk of atrial septal defect (ASD) in offspring of < 20 years old group and ≥ 35 years old group was significantly higher than that of mothers aged 25 to 29 years old (OR=5.38, 95%CI: 2.96-9.79; OR=1.43, 95%CI: 1.01-2.03). The risk of ventricular septal defect (VSD) was significantly increased in the offspring ≥ 35 years old (OR=1.51, 95%CI: 1.04-2.19). Restricted cubic spline and threshold analysis showed that there was a curvilinear relationship between maternal childbearing age and the risk of CHD, ASD, and VSD in offspring. The risk of CHD in offspring increased with childbirth age (OR=1.04, 95%CI: 1.02-1.06) when childbirth age was more than 25.43 years old, and VSD risk increased with childbirth age when childbirth age > 32.04 years old (OR=1.16, 95%CI: 1.09-1.24). When the delivery age was less than 23.75 years old, the risk of ASD in offspring decreased with the increase of delivery age (OR=0.69, 95%CI: 0.58-0.82). Conclusion Maternal childbearing age is an independent risk factor for CHD in offspring. Women of appropriate age should be encouraged to marry and give birth, and screening policies should be more reasonably specified for young and older women, and prenatal screening should be strengthened. [ABSTRACT FROM AUTHOR]

Copyright of Paint & Coatings Industry (0253-4312) is the property of Paint & Coatings Industry Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Feed Research is the property of Editorial Board of Feed Research and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Science Technology & Engineering is the property of Chinese Society of Technology Economics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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Copyright of Feed Industry is the property of Liaoning Provincial Institute of Agricultural Mechanization and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

In order to identify the pathogen that caused rust of Bletilla striata in Guangxi Zhuang Autonomous Region and to screen resistance resources for B. striata, the rust pathogen was isolated from infected leaves of B. striata and identified using morphology and molecular methods. At the same time, the resistance of 23 B. striata from different regions was evaluated by artificial inoculation of pathogen. The results were as follows:(1)The urediopores of strain X2 isolated from diseased leaves in B. striata were golden yellow, oval,(21.43-30.95)μm ×(13.10-19.05)μm. The teleutospores were golden yellow, obovate or clavate,(17.25-30)μm ×(5.5-6.65)μm.(2)The length of ITS sequence of strain X2(OQ826009)was 689 bp, which were compared with other ITS sequences in the GenBank, and the similarity reached 95.86% compared with Coleosporium sp.(KY783686.1). But the phylogenetic tree showed that the sequence was clustered together with two sequences of Coleosporium bletiae (MN108161.1, OP363680.1). The strain X2 was identified as Coleosporium bletiae by combining morphology and molecular methods.(3)After 14 days of artificial inoculation with strain X2, the disease index of 23 Bletilla striata ranged from 0 to 70.7. And the resistance of strain X2 from 23 B. striata were divided into six different levels according to the disease index. Among them, one immune materials was identified for the disease index was 0. Four highly resistant materials were identified for the disease index was 1.7-4.7. Six disease-resistant materials were identified for the disease index was 5.6-9.4. Five medium-resistant materials were identified for the disease index was 12.7-18.3. Five susceptible materials were identified for the disease index was 32.0-49.1 and two highly susceptible materials were identified for the disease index was 62.2-70.7. In conclusion, five materials(one immune material and four highly resistant materials)of B. striata from different places(Honghe City in Yunnan Province, Gongcheng County and Baise City in Guangxi Zhuang Autonomous Region, Zunyi City in Guizhou Province and Yichang City in Hubei Province, respectively)can be promoted directly or applied as parent materials for creating excellent germplasm to resist the rust in B. striata for they express immune or highly resistance. This study provides the basis for further research on pathogenesis and control of rust in B. striata. [ABSTRACT FROM AUTHOR]

A ventilation system can often dominate a controllable environment in a pig house. A vertical ventilation system with roof and manure pit exhaust fans has been introduced into some newly built pig houses in Northern China, in order to improve the microclimate environment. However, it is still unclear on the adaptability of this ventilation system in cold seasons. This study aims to evaluate the suitability of the ventilation system in northern China. A field measurement was also performed in the newly built pig house using the vertical ventilation pattern in Inner Mongolia. The pig house was equipped with air inlets on the sidewalls, while there was no ceiling inside. Two independent units (U1 and U3) of the pig house were selected for the experiment. Portable monitoring unit (PMU) and particulate concentration monitoring unit (PCMU), internet of things (IoT)-based environmental monitoring devices, were developed to continuously measure indoor temperature, relative humidity, carbon dioxide (CO2 ), ammonia (NH3 ) and total suspended particulate matter (TSP) concentrations in autumn and winter. Ventilation rate was also recorded with the feed intake, feed conversion ratio, mortality, initial and final average weight of the pigs. Then, the adaptability of the vertical ventilation was evaluated in the extremely cold climate using the indoor thermal, air quality and spatial uniformity of the pig house with production performance. Results show that the average temperature and relative humidity during measurement were 22.7 ℃ and 59.6 % in the ranges of 18.2-29.2 ℃ and 38.6 %- 82.1%, respectively. Meanwhile, the average ventilation rate fluctuated at 0.34-0.39 m³ /(h∙kg). Seasonal means of NH3, CO2 and TSP concentrations were 6.5 mg/m³, 2 200 mg/m³ and 2 915 μg/m³, which were fluctuated in 3.1-12.3 mg/m³, 1 244- 3 400 mg/m³, 1 563-4 215 μg/m3 , respectively. The thermal and air quality environment of the pig house was generally controlled in a suitable state for pigs. While effective environmental temperature was 27.1-30.7 ℃ in the pig house during the nursery period, indicating mild heat stress to the pigs with a duration of 12.9% of the measurement. The Non-uniformity Coefficient of temperature, relative humidity, and NH3, CO2, and TSP concentrations in the pig house were 0.01, 0.15, 0.45, 0.03, and 0.15, respectively. Meanwhile, the maximum differences in the temperature, relative humidity, and NH3, CO2, and TSP concentrations in the indoor space were 1.5 ℃, 32.8%, 4.8 mg/m³, 445 mg/m³, and 1 296 μg/m³, respectively, indicating the relatively uniform distribution in the environment. Average ventilation rates of U1 and U3 units in the nursery period were 0.35 and 0.39 m³ /(h∙kg), respectively, which were 0.34 and 0.35 m³ /(h∙kg) during the fattening period. Generally, the ventilation of the pig house fully met the minimum demands in northern China in cold seasons. Moreover, the concentrations of NH3 and CO2 in pig houses were 50% and 52% lower than those without manure pit fans in Europe. There were also comparable daily weight gain (842 vs. 818 g/d), feed conversion ratio (2.68 vs. 2.79), and mortality rate (1.68% vs. 1.31%) of the pigs in the U1 and U3 test units. The thermal environment and air quality of the experimental pig house were suitable for the production performance of the pigs. In conclusion, the tested pig house was equipped with roof and manure pit exhaust fans but without ceiling settings, where the thermal and air quality environment was maintained in a suitable state in autumn and winter. Generally, the production performance of pigs was also achieved under such an environment. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Signal Processing is the property of Journal of Signal Processing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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Copyright of Chinese Journal of Network & Information Security is the property of Beijing Xintong Media Co., Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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Copyright of Storage & Process is the property of Tianjin Academy of Agricultural Sciences and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Fly Ash Comprehensive Utilization is the property of Hebei Fly Ash Comprehensive Utilization Magazine Co., Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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Copyright of Feed Research is the property of Editorial Board of Feed Research and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Feed Industry is the property of Liaoning Provincial Institute of Agricultural Mechanization and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Science Technology & Engineering is the property of Chinese Society of Technology Economics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Anhui Agricultural Sciences is the property of Journal of Anhui Agricultural Sciences Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Objective To investigate the feasibility and value of a multi-parametric MRI radiomicsbased nomogram model for pretreatment predicting the lymphovascular space invasion (LVSI) of endometrial endometrioid adenocarcinoma (EEA). Methods Preoperative MRI and baseline clinical characteristics of 205 EEA patients were prospectively collected from Oct 2020 to Jan 2022 in the Obstetrics and Gynecology Hospital, Fudan University, and randomly divided into training set (n=123) and validation set (n=82) in a 6∶4 ratio. The whole-tumor region of interest was manually drawn on T2- weighted imaging, diffusion-weighted imaging (apparent diffusion coefficient), and dynamic contrastenhanced MRI, respectively, for radiomics features extraction. In the training set, univariate and multivariate Logistic regression analysis were used to select independent clinical predictors of LVSI (+) and construct the clinical model. The least absolute shrinkage and selection operator (LASSO) regression and multivariate Logistic regression analysis were used to select optimal radiomics features to form a radiomics signature. A combined nomogram model was established by integrating clinical independent predictors and the radiomics signature, and validated in the validation set. The predicting performance and clinical net benefit were evaluated by using the area under the receiver operating characteristic curve (AUC) and clinical decision curve analysis, respectively. Results Of the 205 EEA cases, 144 cases were LVSI (-) and 61 cases were LVSI (+). Menopausal status, CA125, and CA199 were independent clinical predictors for the LVSI (+), and contributing to a clinical model with AUCs of 0.714 (training) and 0.731 (validation). From 8 240 extracted radiomics features, five were selected to construct a MRI radiomics signature after de-redundancy and LASSO dimensionality reduction, yielding AUCs of 0.860 (training) and 0.759 (validation). The combined nomogram model showed AUCs of 0.887 (training) and 0.807 (validation), outperforming others and achieving maximum clinical benefit in a large range of threshold probability in both training and validation sets. Conclusion The multi-parametric MRI-based nomogram model has the potential for pretreatment predicting the LVSI status of EEA, providing valuable information for clinical management decision-making and improving patient’s clinical benefits. [ABSTRACT FROM AUTHOR]

Copyright of Modern Food Science & Technology is the property of Editorial Office of Modern Food Science & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)