Search

研究能源生产消费变化对实现“碳中和”目标具有重要意义，然而中国常规能源的时空演化格局还有待深入研究。基于2010—2019年原油、原煤和天然气生产消费量和能源产消总量，使用空间自相关和重心分析方法，探析全国和各省份能源结构，全国及各省份原煤、原油和天然气生产量时空变化格局。结果显示：①中国能源生产量高的区域在煤炭的产地，中国能源消费量高的区域偏向东部，与各类能源生产量高的区域存在空间不平衡；②2010—2019年能源产消重心、原煤产消重心和原油生产重心都有向西移动的趋势，原油消费向南移动，天然气生产消费整体向东移动，西部地区对能源的需求正在逐步变大，中国一直以来以煤炭为主的能源结构正在缓慢改变，新能源和天然气的生产量逐步上升。研究结论为中国制定降碳能源政策和改善区域能源产消不平衡提供了参考。

目的探讨YKL-40对特发性肺动脉高压患者预后的预测作用。方法收集2016年1月至2018年3月在广东省人民医院住院的82例特发性肺动脉高压（IPAH）患者病历资料进行回顾性分析，根据临床结局分为死亡组和存活组。采用酶联免疫吸附测定法检测血清YKL-40，使用Vivid 7超声平台采集超声心动图相关数据。结果IPAH死亡组患者的血清YKL-40水平明显高于存活［95.3 （13.1~217.3） ng/mL vs. 11.0 （5.7~47.7） ng/mL，P=0.006］，三尖瓣环收缩期峰值速度（TAPSV）低于存活组［7（6.0~8.0） cm/s vs. 9 （7.0~11.0） cm/s，P=0.001］。IPAH患者血清YKL-40水平与N端脑钠肽前体、肺动脉平均压、肺血管阻力呈正相关。Logistic回归分析显示TAPSE/lgYKL-40、TAPSV/lgYKL-40与IPAH患者的死亡结局相关，OR值分别为0.722和0.519 ，OR值的95%置信区间分别为（0.368，0.987）和（0.283，0.951）（P＜0.05）。结论YKL-40联合超声心动图参数对特发性肺动脉高压患者的临床结局有预测意义。

目前基于白光LED（发光二极管）的室内可见光通信信道模型的研究主要集中于理论分析,因此信道特性对系统性能的影响还不明确。文章首先分析并优化了室内白光LED通信信道理论模型,并在此基础上研究信道编解码算法,通过Simulink软件搭建信道模型和可见光通信系统来分析信道编码对系统性能的影响,得到了适合可见光通信系统信道特性的信道编码方法。

文章首先针对传送业务从基于电路的时分复用（TDM）业务向基于分组的业务转变对分组传送网的要求,说明了满足这一要求的分组传送网的总体分层结构,然后在此基础上给出了传送多协议标签交换（T-MPLS）分组传送网的分层结构,最后,分析了基于该结构的TDM和IP等业务的综合承载机制。

Copyright of Journal of Modern Medicine & Health is the property of Journal of Modern Medicine & Health 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 Modern Medicine & Health is the property of Journal of Modern Medicine & Health 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 Shanxi Agricultural Sciences is the property of Shanxi 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.)

Objective To analyze the clinical value of three-dimensional digital subtraction angiography (3-D DSA)-guided peritoneal dialysis (PD) catheterization. Methods Twenty-six patients who underwent PD treatment in our hospital from October 2021 to October 2022 were randomly divided into a control group and an observation group. The control group underwent PD catheterization using traditional open surgery, while the observation group underwent percutaneous PD catheterization guided by 3-D DSA. The general information, incision length, intraoperative bleeding volume, operative time, postoperative pain score, pain duration, length of stay, adverse events, and patient satisfaction were compared between the two groups. Results There was no significant difference in general information between the two groups. The observation group was significantly (all P < 0.05 ) better than the control group with shorter incision (2.14±0.17) cm, lower intraoperative bleeding volume (7.74±1.29) mL, shorter operative time (28.48±3.24) min, lower postoperative pain score (2.56±0.87), shorter postoperative pain duration (57.16±7.26) min, and length of stay (11.16±3.04) days compared to the control (5.24±0.86) cm, (15.12±5.41) mL, (59.64±6.52) min, (5.73±1.42), (81.25±15.16) min T (16.24±5.68) days]. There was no significant difference (P = 0.277) in the incidence of adverse event in the observation group (1, 7.69%) compared to control group (3. 23.08%). Patient satisfaction was significantly higher (P = 0.0297) in the observation group (100%) than the control group (69.23%). Conclusion Comparing to traditional open surgery, 3-D DSA-guided PD catheterization is less traumatic and has shorter operative time and patient satisfaction. [ABSTRACT FROM AUTHOR]

Copyright of Food & Fermentation Industries is the property of Food & Fermentation Industries 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 Food & Fermentation Industries is the property of Food & Fermentation Industries 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 Evaluation & Analysis of Drug-Use in Hospitals of China / Zhongguo Yiyuan Yongyao Pingjia yu Fenxi is the property of Evaluation & Analysis of Drug-Use in Hospitals of China 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 Chinese Journal of Stroke is the property of Chinese Journal of Stroke 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 Journal of Graphics is the property of Journal of Graphics 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 construct a Propionibacterium acnes (P. acnes)-induced cellular inflammation model and to study the anti-inflammatory effect of a thermal water. Methods Utilize human immortalized keratinocytes (HaCaT) was used in the experimentation. Co-incubate the cells with thermal spring water and employ the CCK-8 assay to assess cell viability, screening for the optimal intervention time for the thermal spring water. Expose the cells to varying concentrations of P. acnes for different times, measure cell viability, calculate the 50% inhibitory concentration (IC50) of P. acnes, and determine the model induction conditions by testing IL-6 levels. The cells were soaked in thermal spring water for 0.5 hours, followed by co-culturing with P. acnes as the preventive intervention group, or co-culturing with P. acnes first and then soaking the cells in hot spring water for 0.5 hours as the therapeutic intervention group. The levels of cell viability, pro-inflammatory cytokines, and gene expression of inflammation pathways were assessed using the CCK-8 assay, ELISA, and RT-PCR, respectively. Concurrently, control groups with saline solution, tap water, and pure water, along with model and blank controlswere set up. Results After treating the cells with thermal spring water and physiological saline for 0.5 hours, cell viabilities were 92.7% and 99.09%, respectively, which led to the selection of 0.5 hours as the intervention time for subsequent experiments.P. acnes at an OD600 of 0.25 was co-incubated with the cells for 5 hours to establish the model. In the preventive intervention, the secretion levels of IL-1β and IL-8, as well as the relative expression levels of IL-6, TNF-α, IL-8, and the genes TLR2 and NF-κB in the cells of the thermal spring water group, were all lower than those in the model group (P<0.05), and significantly lower than those in the saline solution group. In the therapeutic intervention, the contents of IL-6, IL-1β, TNF-α, and IL-8, as well as the expression levels of the genes IL-6, IL-1β, TNF-α, TLR2, and NF-κB in the thermal spring water group, were all lower than those in the model group. The contents of IL-6, IL-1β, TNF-α, and the expression levels of the genes IL-6, IL-1β, IL-8, TLR2, and NF-κB were also significantly reduced compared to those in the saline solution group (P<0.05). Conclusion This thermal water may exert its anti-inflammatory effect by down-regulating the expression of TLR2 and NF-κB genes in inflammatory signalling pathway and by reducing the secretion of pro-inflammatory cytokines. [ABSTRACT FROM AUTHOR]

Distant supervision relation extraction faces the problem of data quality, that is, the generated dataset has multiple types of noise, noisy words, noisy sentences and noisy bags. Existing research mainly focuses on the noisy sentences, ignoring the impact of other noise, and cannot completely eliminate the noise. To this end, the paper proposed a distant supervision relation extraction model based on multilevel attention mechanism and dynamic thresholding (MADT). The model firstly used a pre-trained language model to obtain entity-pair semantic representations, then obtained semantic features embedded with keyword information through a bidirectional gated recurrent unit and a self-attention mechanism, and then dealt with the three noise problems sequentially in conjunction with the deep contextual representation of the sentence. In addition, the paper proposed a dynamic thresholding method to further remove noisy sentences, enhance the contribution of positive example sentences to the bag representation, and reduce the impact of noisy bags using a semantic similarity-based attention mechanism. Experiments on the NYT10d and NYT10m datasets show that the MADT model is able to address all levels of noise in distant supervision of relation extraction and effectively improve relation extraction performance. [ABSTRACT FROM AUTHOR]

Copyright of Chinese Journal of Diabetes Mellitus is the property of Chinese Journal of Diabetes Mellitus 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 Shandong Medical Journal is the property of Shandong Medical Health Newspapers 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 impact of various factors on the effectiveness of tumor-treating fields (TTFields) therapy, aiming to optimize the electric field strength in tumor regions and improve clinical outcomes. Methods A 3D skull model of a real patient, based on low-frequency electromagnetic fields and finite element method, was utilized to simulate the electric field distribution under actual treatment conditions, analyzing the effects of different electrode positions, sizes, quantities and tumor characteristics on the electric field distribution. Results The simulation validated the accuracy of the algorithm. Statistical analysis revealed that skin and dense bone conductivity significantly impacted the electric field intensity in the tumor region. Electrode placement and cerebrospinal fluid conductivity also affected the distribution. It ensured that more than 90% of the residual area after tumor resection received effective treatment by optimizing parameters. Therefore, the risk of tumor recurrence was reduced, and it provided effective guidance for optimizing TTFields therapy. Conclusions This study provides valuable guidance for the clinical treatment of glioblastoma patients and helps achieve better therapeutic outcomes. [ABSTRACT FROM AUTHOR]

Copyright of International & Comparative Education is the property of International & Comparative Education Editorial, Beijing Normal University 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 Dalian Polytechnic University is the property of Journal of Dalian Polytechnic University 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 Journal of Modern Laboratory Medicine is the property of Journal of Modern Laboratory Medicine 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.)

In order to screen high quality alfalfa varieties suitable for planting in northeast China, 130 alfalfa varieties at home and abroad and newly selected varieties were used as the research materials. The seeds at germination stage were alkali stress treated with 30 mmol/L Na2CO3 and 50 mmol/L NaHCO3, respectively. Comprehensive evaluation of alkali stress of alfalfa varieties were analyzed by detecting germination index and subordinate function analysis. The results showed that the average relative germination rates of 130 alfalfa species under Na2CO3 and NaHCO3 stress were 68.54% and 79.17%, respectively. The relative germination vigor were 57.30% and 65.78% respectively. The relative root length was 23.70% and 17.61%, respectively. The relative bud length was 53.21% and 46.37%, respectively. Through the analysis of membership function, it was found that the seeds of seven varieties of LJ112, LJ66, LJ33, 5010, DARA, Nongjing 1 and Juneng salt-tolerant had good germination trend under two alkali stresses. By calculating the comprehensive membership function values of 130 alfalfa varieties under two alkali stresses, it can be seen that Nongjing 1 and LJ33 have the best germination and growth under two alkali stresses. The study indicates that this experiment is beneficial for guiding the cultivation of alfalfa and providing germplasm resources for the breeding of alkali tolerance alfalfa varieties. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Food Safety & Quality is the property of Journal of Food Safety & Quality 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 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.)

Copyright of Food Research & Development is the property of Food Research & Development 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 China Brewing is the property of China Brewing 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 Geology & Exploration is the property of Geology & Exploration 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 Journal of Tea Science is the property of Journal of Tea Science 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 Shipin Kexue/ Food Science is the property of Food Science 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 Bearing is the property of Bearing 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 Fiber Inspection / Zhongguo Xian-Jian is the property of China Fiber Inspection 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 Computer-Aided Design & Computer Graphics / Jisuanji Fuzhu Sheji Yu Tuxingxue Xuebao is the property of Gai Kan Bian Wei Hui 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 Evaluation & Analysis of Drug-Use in Hospitals of China / Zhongguo Yiyuan Yongyao Pingjia yu Fenxi is the property of Evaluation & Analysis of Drug-Use in Hospitals of China 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 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.)

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.)