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目的 评价不同引流静脉类型对支架治疗特发性颅内高压合并静脉窦狭窄疗效的影响。 方法 连续入组2014年1月-2019年12月在首都医科大学附属北京天坛医院接受静脉窦支架置入术的特发性颅内高压患者，对病历资料进行回顾性分析。按照静脉引流类型分为横窦单侧引流组和横窦双侧引流组，比较2组的临床特点和术后1个月随访时头痛、视力障碍和视盘水肿等症状和体征的改善情况。 结果 115例患者接受了支架治疗，年龄18～62岁，中位年龄38（31～46）岁，女性90例（78.3%），其中横窦单侧引流组87例，横窦双侧引流组28例。横窦单侧引流组高脂血症发生率低于横窦双侧引流组（8.0% vs. 21.4%，P=0.022），静脉窦狭窄率高于横窦双侧静脉引流组（79.2% vs. 73.9%，P=0.018）。1个月随访结果显示，13例（11.3%）患者的头痛、视力障碍及视盘水肿等症状和体征消失，101例（87.8%）上述症状和体征有改善，1例（0.9%）症状和体征无改善或恶化。横窦单侧引流组比横窦双侧引流组视盘水肿体征的改善更明显（P=0.031），2组头痛和视力损害症状以及总体改善情况差异无统计学意义。 结论 静脉窦支架置入可改善特发性颅内高压患者的症状，横窦单侧静脉引流患者的视盘水肿体征改善较双侧引流患者更明显。 Abstract: Objective To evaluate the effect of different intracranial venous drainage patterns on stenting for idiopathic intracranial hypertension. Methods This retrospective study enrolled the consecutive patients with idiopathic intracranial hypertension who underwent venous sinus stent implantation in Beijing Tiantan Hospital from January 2014 to December 2019. According to intracranial venous drainage pattern, the patients were divided into the unilateral transverse sinus drainage (UTSD) group and bilateral transverse sinus drainage (BTSD) group. The clinical characteristics and 1-month prognosis of the two groups were compared, and the 1-month follow-up symptoms and signs after stenting were analyzed. Results A total of 115 patients received stenting, with a median age of 38 (31-46) years (range:18-62 years) and 90 females (78.3%), 87 cases in UTSD group and 28 cases in BTSD group. The percentage of hyperlipidemia in UTSD group was lower than that in BTSD group (8.0% vs. 21.4%, P=0.022). The stenosis rate in UTSD group was higher than that in BTSD group (79.2% vs. 73.9% P=0.018). The 1-month follow-up after stenting showed that symptoms and signs had improved in 101 patients (87.8%), headache, visual impairment and papilledema disappeared in 13 patients (11.3%), the original symptoms and signs had no improvement or deterioration in only one patient (0.9%). There were no statistical differences in improvement of headache (P=0.799) and visual impairment (P=0.104) and the overall improvement of symptoms (P=0.484) between the two groups. However, papilledema improved better in UTSD group than in BTSD group (P=0.031). Conclusions Venous sinus stenting can improve the symptoms of patients with idiopathic intracranial hypertension. The papilledema improved better in patients with unilateral transverse sinus drainage than in patients with bilateral transverse sinus drainage.

Objective Self-perceptions of aging (SPA) are a critical issue in the mental health of middle -aged and older adults, yet the complex relationship with obesity remains insufficiently explored. This study analyzes the impact of obesity on SPA among this demographic. Methods Utilizing longitudinal follow-up data from the Health and Retirement Study (HRS) in the United States, logistic regression was employed to examine the relationship between Body Mass Index (BMI) and SPA, while restricted cubic splines (RCS) were used to reveal potential nonlinear associations. Results After adjusting for baseline age, gender, race, education level, marital status, number of chronic diseases, depressive symptoms, functional limitations, and baseline SPA levels, grade 2/3 obesity was associated with negative SPA (Oi=1.50!) 95%CI: 1.08-2.07), and a significant nonlinear relationship between BMI and SPA was observed (P-overall < 0.001, P-nonlinear = 0.042). Subgroup analysis indicated that among individuals under 80 years old, females, those with a high school education or lower, Caucasians, individuals with depressive symptoms, and those without functional limitations, grade 2/3 obesity was positively correlated with negative SPA. Conclusion Obesity in middle-aged and older adults is related to negative SPA. Healthcare professionals should pay attention to the potential psychological impacts of obesity during the aging process and develop more targeted prevention and intervention strategies to assist obese individuals in improving their mental health as they age. [ABSTRACT FROM AUTHOR]

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Copyright of Electric Power is the property of Electric Power 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.)

To reduce buildings' operational energy consumption, a method of retrofitting the glazing curtain walls of high-rise buildings in Hong Kong with vacuum glazing was proposed. The thermal performance and indoor thermal comfort of the retrofitted and non-retrofitted curtain walls were comparatively studied through outdoor experimental tests. The results show that this energy-saving retrofit method can significantly reduce the internal surface temperature, internal surface heat flux, solar transmittance and solar heat gain coefficient of the curtain wall, while improving indoor thermal comfort levels. Specifically, the average reduction of internal surface heat flux is as high as 81. 6%, and the maximum reduction in solar heat gain coefficient is up to 83%. This means that the proposed retrofitted solution can effectively contribute to a reduction in energy use for cooling, and is suitable for using in cities with high cooling demand. The analysis results will provide guidance for energy-saving retrofits of existing curtain walls in high-rise buildings in hot-climate cities, contributing to the achievement of carbon neutrality goals. [ABSTRACT FROM AUTHOR]

In order to analyze the status of the transformer core more effectively, a method for analyzing the characteristics of loosening defects in the transformer core based on chaos theory and sparrow optimization K-means algorithm was proposed. Firstly, the C-C method was used to solve the embedding dimension and delay time of the reconstructed phase space, and reconstruct the phase space of the transformer vibration signal. Secondly, the maximum Lyapunov index of the transformer vibration signal was calculated to determine whether the system has chaotic characteristics, and the correlation dimension and Kolmogorov entropy were selected as a set of chaotic characteristics to identify the degree of looseness of the core. Thirdly, the sparrow search algorithm was introduced into the K-means clustering algorithm to optimize the selection of the initial center cluster and use the average displacement of the cluster center and cluster points as a quantitative feature to describe the loose state of the transformer core. Finally, the two sets of characteristics were combined to form a diagnostic index for the loosening fault of the transformer core, which provides a theoretical basis for the diagnosis of the loosening fault of the transformer core and put the classifier into fault diagnosis to verify the superiority of the combination of the two sets of features. [ABSTRACT FROM AUTHOR]

Copyright of Control Theory & Applications / Kongzhi Lilun Yu Yinyong is the property of Editorial Department of Control Theory & Applications 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 Journal of National University of Defense Technology / Guofang Keji Daxue Xuebao is the property of NUDT Press 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.)

Objective To construct the 0. 5-, 1-, and 2-year prognosis prediction nomogram of advanced hepatocellular carcinoma(HCC） patients who can not be treated with radical surgery after hepatic arterial infusion chemotherapy(HAIC） and to conduct the verification and evaluation. Methods Totally124 HCC patients who received HAIC and could not be treated with radical surgery were randomly divided into the training group and validation group according to 6:4. Seventy-four cases in the training group were used to construct the nomogram and to conduct internal validation, and 50 cases in the validation group were used for external verification. Univariate COX analysis was used for survival analysis. The factors included age, sex, Eastern Cooperative Oncology Group (ECOG) score, cirrhosis visible on imaging, tumor size, tumor number, presence of portal cancer thrombin, presence of extrahepatic metastasis, Child-Pugh grade, Alpha fetoprotein(AFP), aspartate transaminase(AST), alanine aminotransferase(ALT), albumin(Alb), total bilirubin(TBIL), C-reactive protein(CRP), hepatitis B virus(HBV), etc. The prognostic factors of HCC patients receiving HAIC who could not be treated with radical surgery were preliminarily screened. Multivariate COX analysis was then performed to obtain independent prognostic factors for HCC patients who received HAIC and could not be treated with radical surgery. Based on the estimated values of COX model parameters in the cohort, the 0. 5-, 1-, and 2-year prognostic nomo‑grams of these patients were constructed. The differentiation and calibration were used to evaluate the prediction effect of the nomogram model. The differentiation of the prediction nomogram was evaluated by analyzing the area under the curve(AUC） of the receiver operating characteristic(ROC） curve. Calibration curves were used to evaluate the degree of calibration of the nomogram model. Results Four factors, including tumor size, AFP, cancer embolus, and CRP were independent prognostic factors for HCC patients who received HAIC and could not be treated with radical surgery. In addition, we successfully constructed a 0. 5-, 1-, and 2-year prognostic nomogram. ROC analysis results showed that the constructed nomogram model predicted that the AUC values of 0. 5-, 1-, and 2-year overall survival(OS） rates of HCC patients in the training group who received HAIC and could not be treated with radical surgery were all greater than 0. 70, indicating that the constructed nomogram had good differentiation. The calibration curve showed that there was a good consistency between the predicted probability of the constructed nomogram and the actual results. Conclusion A 0. 5-, 1-, and 2-year prognosis prediction nomogram of HCC patients who received HAIC and could not be treated with radical surgery was successfully constructed, which was composed of four independent prognostic factors, including tumor size, AFP, cancer embolus, and CRP, and its evaluation effect was good. [ABSTRACT FROM AUTHOR]

Lodging has posed a serious threat to the yield and quality of rice. This study aims to explore the effect of mechanical and physicochemical properties on the lodging resistance of hybrid japonica rice. The test subjects were selected as the curved panicle hybrid japonica rice Liaoyou 2006 (LY2006), Liaoyou 5218 (LY5218), and Liaoyou 5273 (LY5273) in northern China. The control object was selected as the conventional japonica rice Nonglin 313 (NL313(CK)) easy to fall. Then the agronomic characters and microstructure of the plant were measured to establish the mechanical evaluation index for the lodging resistance of japonica hybrid rice, including the maximum bending force, breaking moment, bending section coefficient, single stem weight mass moment, bending strength, Young's elastic modulus and inertia moment, according to the bending and tensile test. Finally, the correlation between the physicochemical and mechanical properties and lodging index was also studied to investigate the effects of mechanical and physicochemical properties on the lodging resistance of hybrid japonica rice under natural cultivation conditions in the field. Four results were obtained. 1) The type of plant was used to improve the structure of rice plants. Thus, ventilation and light transmission were provided for the plants to create a microclimate, thereby strengthening the individual stems and their lodging resistance. The plant height and panicle weight of hybrid japonica rice LY2006, LY5218, and LY5273 were significantly higher than those of conventional japonica rice NL313, whereas, their lodging resistance was greater than that of NL313. Therefore, the shorter the plant height was, and the lighter the panicle was, the stronger the lodging resistance was under suitable cultivation conditions. The structure of the rice plant type was optimized for the unity of high-stem and high-yield. 2) The length of the basal internodes and leaf sheaths of hybrid japonica rice shared a significant impact on the lodging resistance. The lengths of the second and third internodes of hybrid japonica rice LY2006, LY5218, and LY5273 were significantly lower than those of conventional japonica rice NL313, while the lengths of the second and third leaf sheaths were significantly higher. Therefore, the short basal internodes and the long leaf sheaths effectively enhanced the lodging resistance of rice plants. 3) The lodging resistance depended on the thickness of cells and tissues, the area of vascular bundles, as well as the content of cellulose, lignin, and potassium in the stems of hybrid japonica rice. The hybrid japonica rice LY2006, LY5218, and LY5273 presented the strong lodging resistance, indicating the relatively larger cell and tissue thickness, vascular bundle area, as well as the higher content of cellulose, lignin, and potassium. The cultivation and genetic regulation were optimized during rice growth. 4) The mechanical properties of hybrid japonica rice stems also played a decisive role in the lodging resistance of rice plants. The breaking resistance, bending moment, bending section coefficient, single stem weight mass moment, bending strength, Young's modulus, and inertia moment were used as the evaluation indexes for the lodging resistance of hybrid japonica rice. It was found that there was a significant positive correlation between lodging resistance and the maximum breaking resistance, bending moment, bending section coefficient, bending strength, and Young's modulus (P<0.01). There was a significant negative correlation between single stem weight mass moment and inertia moment (P<0.01). The finding can provide comprehensive data support and theoretical support to improve the lodging resistance varieties and agronomic traits in northern japonica hybrid rice. [ABSTRACT FROM AUTHOR]

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Copyright of Mechanical & Electronic Control Engineering is the property of Omniscient Pte. 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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In recent years, the undercutting of the riverbed under the Xinglong Hydrojunction Dam is more serious, and the navigation guarantee rate of 1 000-ton ships in the first-line ship lock is not high. In order to study the scale of second-line ship lock construction, it is necessary to analyze the passing capacity of existing locks and new ship locks according to the prediction of the traffic volume passing through the locks. According to the statistic data and the law of development, this paper predicts the composition of the ships passing through the locks in the future. The discrete event system simulation method was used to simulate the random arrival and stalling process of ships, and the system simulation model of ship lock group was constructed according to the random arrival order of ships. The calculation results show that the near-term and long-term one-way annual passing capacity of the Xinglong second-line ship lock is 31.98 million tons and 38.73 million tons, respectively. It is appropriate to take the effective length of the Xinglong second-line ship lock to be 300 m. [ABSTRACT FROM AUTHOR]

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Copyright of Journal of Engineering for Thermal Energy & Power / Reneng Dongli Gongcheng is the property of Journal of Engineering for Thermal Energy & Power 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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Helium-hydrogen separation bed is an important part of tritium extraction system. In order to deeply study penetration performance of the radial flow bed and guide the structure design, the mathematical model of radial bed breakthrough capacity was established by coupling material hydrogen absorption kinetics equation, mass transfer equation and fluid flow momentum equation in COMSOL Multiphysics, which was used to carry out parametric scanning of the characteristic parameters, and the effect of the model on the breakthrough capacity was analyzed. The results show that the breakthrough experiment results are in good agreement with the simulated data, and the model is reliable. The effect of temperature, height-diameter ratio and porosity on the breakthrough capacity was analyzed. The adsorption temperature of the bed is from room temperature to 343 K. In this temperature range, increasing the temperature has less effect on the length of the mass transfer zone and the concentration-time curve at the outlet. With the increase of the height-diameter ratio, the efficiency of the bed decreases significantly, in which the high efficiency is maintained for a longer period of time when the hieght-diameter ratio is 2.00-8.33. With the increase of porosity, the adsorption efficiency of the bed decreases significantly. Considering the adsorption efficiency, the flow resistance and the difficulty of powder loading, the powder porosity is recommended from 0.56 to 0.64. Therefore, the model established in this study can better predict the adsorption performance, and can be used to optimize the structure design basis and process parameters. [ABSTRACT FROM AUTHOR]

Taking five blueberry varieties introduced from abroad as the experimental materials, the appearance indicators (such as transverse diameter, vertical diameter, single fruit weight, fruit shape index, color, etc. ) and nutritional components (such as vitamin C, soluble protein, free amino acids, soluble sugars, starch and anthocyanins) of their fruits under planting conditions in Lijiang were studied. Principal component analysis was used to analyze all indicator parameters. The results showed that O’Neal had the highest fruit shape index (0. 86), single fruit weight (1. 87 g) and anthocyanin content (440. 5 μg / g), as well as a higher content of soluble sugars (16. 69%), vitamin C (0. 35 mg / g) and free amino acids (41. 11 μg / g). Two principal components were extracted in the principal component analysis, with a cumulative variance contribution rate of 85. 635%. The comprehensive evaluation of O’Neal was the highest, making it the best variety suitable for introduction and cultivation, and also the best variety as a breeding material. [ABSTRACT FROM AUTHOR]

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目的 探讨头孢呋辛钠联合依达拉奉治疗老年大面积脑梗死并发医院获得性肺炎(HAP)的临床效果. 方法　选取老年大面积脑梗死并发HAP患者74例, 随机分为对照组及观察组各37例. 对照组予以依达拉奉联合 常规抗生素盐酸左氧氟沙星注射液治疗, 观察组予以依达拉奉联合注射用头孢呋辛钠治疗, 疗程均为1周. 评价两 组治疗肺炎的临床疗效, 治疗前后行临床肺部感染(CPIS)评分评价肺部感染程度, 免疫荧光层析法及免疫比浊法检 测治疗前后血清炎症因子降钙素原(PCT)、C反应蛋白(CRP), 采用流式细胞仪检测治疗前后外周血免疫功能指标 CD8+ 、CD3+ 、CD4+ T淋巴细胞及 CD4+ /CD8+, 采用美国国立卫生院卒中量表(NIHSS )对患者治疗前后神经功能进行 评估, 采用 Barthel指数(BI )对患者治疗前后日常生活能力进行评估, 记录治疗后不良反应发生情况. 结果　观察 组治疗肺炎的总有效率高于对照组; 两组治疗前CPIS评分差异无统计学意义, 治疗后CPIS评分均下降, 且观察组治 疗后CPIS评分低于对照组(P均<0. 05). 治疗前两组血清PCT、CRP水平差异无统计学意义, 治疗后两组血清PCT、 CRP水平均较治疗前降低, 且观察组治疗后血清 PCT、CRP水平低于对照组(P均<0. 05). 治疗前两组各外周血免 疫功能指标差异无统计学意义, 治疗后两组外周血 CD3+ 、CD4+ T 淋巴细胞比例及 CD4+ /CD8+ 均较治疗前升高且 CD8+ T 淋巴细胞比例较治疗前降低, 观察组治疗后 CD3+ 、CD4+ T 淋巴细胞比例及 CD4+ /CD8+ 高于对照组且 CD8+ T 淋巴细胞比例低于对照组(P均<0. 05). 治疗前两组NIHSS评分、BI差异无统计学意义, 治疗后两组NIHSS评分均 较治疗前降低且BI均较治疗前升高, 观察组治疗后BI高于对照组(P均<0. 05), 治疗后两组NIHSS评分比较差异无 统计学意义. 两组不良反应发生率比较差异无统计学意义. 结论 头孢呋辛钠联合依达拉奉可减轻老年大面积脑 梗死并发HAP患者肺部感染程度, 抑制炎症因子释放, 提高机体免疫功能及患者日常生活能力, 且安全性良好. [ABSTRACT FROM AUTHOR]

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