Search

目的探讨取卵日不同径线卵泡的黄素化颗粒细胞中各种水通道蛋白（AQPs）的mRNA表达水平。方法收集2022年3月25日至2022年9月23日在本中心行体外受精胚胎移植助孕的不孕患者取卵日的卵泡液共48例，根据卵泡径线分为小（< 13 mm）、中（13 ~ 18 mm）、大（≥ 18 mm）卵泡群分开收集卵泡液提取颗粒细胞。经RNA定量后纳入22例进行分析，比较3组卵泡群的AQPs mRNA表达水平。根据促排卵方案将患者分为拮抗剂组和激动剂组，分析AQPs的表达差异。结果黄素化颗粒细胞中AQP2的mRNA水平随卵泡径线的增加而升高（linear trend P = 0.004），其差异在大、小卵泡组间具有统计学差异（P = 0.017）；该差异在拮抗剂组内具有统计学意义（P = 0.049 6），在激动剂组中无统计学意义（P = 0.108）。结论AQP2在黄素化颗粒细胞中的mRNA水平随着卵泡径线的增长而增加，其表达量与促排卵方案有关，提示AQP2在卵泡生长和卵泡液生成过程中可能起到一定作用，且其mRNA表达水平可能受到FSH和LH的调节。

Copyright of Chinese Journal of Tissue Engineering Research / Zhongguo Zuzhi Gongcheng Yanjiu is the property of Chinese Journal of Tissue Engineering 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 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.)

Copyright of Electric Power Automation Equipment / Dianli Zidonghua Shebei is the property of Electric Power Automation Equipment 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.)

In order to address the challenges posed by cloud and vegetation occlusion, as well as low resolution in satellite remote sensing images, which often result in low extraction accuracy, a road extraction method of DLinkNet-Road based on eight-directional stripe pooling was proposed for road extraction in satellite remote sensing images. Firstly, by combining the multi-directional strip features of roads and the advantages of strip pooling for extracting slender targets, an eight directional strip pooling road extraction module was constructed, effectively establishing long-distance multi-directional dependencies of road pixels. Secondly, considering the problems of road breakage caused by occlusion and loss of road contour details caused by convolution pooling operations, a road feature weighted compensation module was designed and a weighted feature fusion structure was constructed to effectively fuse road information from multiple scale features. In experiments on two road datasets, DeepGlobe and Massachusetts, the proposed method achieves an intersection over union (IoU) ratio of 67. 42% and 66. 38%, respectively, which was 3. 89% and 3. 17% higher than the baseline model. The experimental results show that the model proposed can improve the disconnection phenomenon in road extraction and ensure the integrity of the road extraction results. [ABSTRACT FROM AUTHOR]

Hepatocellular carcinoma (HCC) is one of the common and fatal malignant tumors worldwide, and the burden of HCC is particularly severe in China. Physiologically, the blood supply to healthy liver is mainly from the portal vein, supplemented by the hepatic artery. While in the development of HCC, the main source of blood supply to HCC is changed from the portal vein to the hepatic artery. The characteristics of HCC vascularization are important for imaging, surgery, interventional therapy, targeted therapy, etc. Even in the future, with the development of radiation therapy technology, such as proton and heavy ion therapy and artificial intelligence technology, the dynamic changes in HCC blood perfusion can be used as a new biomarker of tumor activity to provide accurate information on the intensity modulation of radiotherapy, so that accurate measurements of HCC blood perfusion is of great significance in guiding the diagnosis and treatment of HCC. The technologies for measurement of HCC blood perfusion have developed from invasive techniques, such as inert gas scavenging, electromagnetic flowmeter, and radionuclide-labeled erythrocyte elution in the middle of the last century to the present non-invasive techniques of CT. With the development of CT imaging technology in the last 30 years, the CT-based imaging technology can assess the status of organ and tissue perfusion relatively easily and accurately. In this paper, the various CT measurement techniques of blood perfusion in HCC were categorized into three types: semi-quantitative technique, relative quantitative technique, and absolute quantitative technique. Their basic principle, scanning methods, and clinical applications were discussed to provide a reference for the diagnosis and treatment of HCC. [ABSTRACT FROM AUTHOR]

To solve the environmental pollution and harm to human health caused by the use of adhesives in traditional paperboard, the development of environmentally friendly mycelium paperboard has become a hot topic. Due to the high dipole moment and hydrogen bonding between macromolecules, hyphae can form clamp shaped connection structures for nutrient reproduction and transfer, and can grow on natural agricultural waste, forming a natural biocomposite material. This study determined the combination of Ganoderma weberianum/corn straw, and designed single factor cultivation conditions such as cultivation time, straw particle size, and fructose addition to explore the effects on the mechanical properties, waterproof properties, and thermal decomposition performance of the hyphal paperboard formed by hot pressing. The optimal cultivation process was obtained through orthogonal experiments. The experimental results indicate that various factors have varying degrees of influence on the edgewise strength, flexural stiffness, and static bending strength and waterproofness of paperboard. Firstly, when the cultivation time was 30 days, the flexural stiffness reached 16.63 mN/m, which was 21.2% higher than the flexural stiffness of kraft paper (13.10 mN/m). Moreover, with the increase of cultivation time, the water absorption (24 hours) had also decreased from 3.92% to 1.27%. Secondly, previous research results have shown that the addition of fructose, glucose, and sucrose increases the biomass growth rate of strains. In this study, fructose was chosen as an exogenous nutrient, and the results showed that when a mass fraction of 5% fructose was added, the mechanical properties were the best, with a flexural stiffness of 18.87 mN/m, which was 30.5% higher than that of kraft paper (13.10 mN/m). Thirdly, the particle size of the sbstrate has a significant impact on the appearance and properties of the material. The results show that, from the appearance perspective, the mycelium paperboard made of 0.165～0.250 mm particle size has the closest appearance and feel to kraft paper. At the same time, during the testing period, it was found that the mycelium paperboard made of 0.165～0.250 mm straw was the least prone to deformation and loosening, and the molding effect was significantly improved compared to other components. In terms of mechanical properties, the edgewise strength increased by 17.4%, the static bending strength increased by 14.9%, and the flexural stiffness increased by 57.3%. The experimental results show that the degree of influence of various factors on the edgewise strength, flexural stiffness, and static bending strength of paperboard is in the order of particle size, cultivation time,fructose addition amount. When the particle size is 0.165～0.250 mm, the cultivation time is 30 days, and the fructose addition of 5.0%, the edgewise strength of the prepared paperboard is 14.36 N/mm, the static bending strength is 10.89 MPa, and the flexural stiffness is 33.09 mN/m. As the particle size decreases, the water absorption rate and water thickness expansion rate of the paperboard after 24 hours of water absorption decrease to 0.86% and 0.59%. The mycelium paperboard prepared by different single factors has the same thermal decomposition process, starting at around 150 ℃ and reaching its maximum at 350 ℃. This study provides a reference basis for the development and application of mycelium composite materials in the future. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Computer Engineering & Applications is the property of Beijing Journal of Computer Engineering & Applications Journal 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 Digital Education is the property of Haiyan Publishing 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 Shanghai Ocean University is the property of Editorial Department of Journal of Shanghai Ocean 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 Acta Prataculturae Sinica is the property of Acta Prataculturae Sinica 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 Arid Zone Research / Ganhanqu Yanjiu is the property of Arid Zone Research 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 Nanjing Agricultural University / Nanjuing Nongye Daxue Xuebao is the property of Journal of Nanjing Agricultural 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.)

This paper summarized the postoperative nursing management of a patient with perianal necrotizing fasciitis and multiple complications. The patient was received Traditional Chinese Medicine debridement, Chinese herbal medicine fumigation and washing, auricular point pressing therapy and comprehensive nursing interventions on gout-related symptoms, anaphylactoid purpura, pain, dietary, emotion and health education. The nursing interventions based on integration of Traditional Chinese and western medicine were effective to improve the postoperative rehabilitation of the patient. (本文总结1例肛周坏死性筋膜炎(PNF)合并多种并发症患者的术后护理经验, 包括中医化腐清创治疗、中药局部熏洗、耳穴压丸、痛风护理、过敏性紫癜的护理、疼痛护理、饮食护理、情志护理以及健康宣教等, 通过开展中西医结合多元化的护理措施, 促进患者早日康复。)

BACKGROUND: Unicompartmental knee arthroplasty has been paid more and more attention because of its advantages of fewer traumas, less blood loss, less complications, faster recovery, excellent knee function and high prosthetic survival rate. Most of the relevant reports focused on its clinical effect, but the changes in the levels of relevant inflammatory cytokines in patients after unicompartmental knee arthroplasty were rarely reported. OBJECTIVE: To investigate the effect of unicompartmental knee arthroplasty in patients with medial compartment osteoarthritis of the knee and the changes of interleukin-1, interleukin-6, and tumor necrosis factor-α levels. METHODS: A total of 30 patients with medial compartment osteoarthritis of the knee who received unicompartmental knee arthroplasty from September 2021 to March 2023 and met the inclusion criteria were selected as the study subjects. Medial angle of proximal tibia, femoral and tibial angle, pain visual analog scale score, hospital for special surgery score, knee joint range of motion, synovial fluid interleukin-1, interleukin-6, and tumor necrosis factor-α levels before and after surgery were compared and statistically analyzed. RESULTS AND CONCLUSION: (1) All 30 patients had grade I wound healing. All patients were followed up for more than 6 months after surgery. There were no complications such as prosthesis loosening and dislocation of prosthesis liner in all patients. (2) The medial proximal tibia angle and the femoral and tibial angles measured after operation were significantly improved (P < 0.05). (3) The visual analog scale score, hospital for special surgery score and range of motion measured at 1, 3, and 6 months after operation were better than those before operation (P < 0.05), and showed a gradual improvement (P < 0.05). (4) The levels of interleukin-1, interleukin-6, and tumor necrosis factor-α in synovial fluid at 3 and 6 months after operation were decreased gradually compared with those before operation (P < 0.05) and showed a gradual downward trend at each time point after operation. (5) It is indicated that unicompartmental knee arthroplasty can effectively treat medial compartment osteoarthritis of the knee, significantly relieve pain, restore knee joint function, improve knee varus deformity and lower limb strength line, and reduce the levels of inflammatory cytokines interleukin-1, interleukin-6, and tumor necrosis factor-α in joints to a certain extent. [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.)

Copyright of Urban Mass Transit is the property of Urban Mass Transit 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 Machine Tool & Hydraulics is the property of Guangzhou Mechanical Engineering Research Institute (GMERI) 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 Packaging & Food Machinery is the property of Packaging & Food Machinery Magazine 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 Automobile Technology & Material is the property of Automobile Technology & Material 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 Telecommunication Engineering is the property of Telecommunication Engineering 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 observe the therapeutic effect of inosine on diabetic cognitive impairment (DCI) in rats and to explore its mechanism. Methods SD male rats were randomly divided into the control group, model group, and experimental group, respectively. Rats in the model group and experimental group were treated with high-fat diet combined with the intraperitoneal injection of streptozotocin and were screened out by Morris water maze experiment to obtain the DCI models, except rats in the control group. After successful modeling, rats in the experimental group were intraperitoneally injected with 100 mg/kg inosine, and rats in the control group and the model group were intraperitoneally injected with the same volume of normal saline, once a day, for 4 weeks. Morris water maze test was used to detect the cognitive ability of rats. HE staining was used to observe the morphology of hippocampal neurons. ELISA was used to detect the levels of tumor necrosis factor- α (TNF- α), interleukin (IL)-1β, IL-6, malondialdehyde (MDA), superoxide dismutase (SOD), and glutathione peroxidase (GSH-Px) in hippocampus. RT-PCR and Western blotting were used to detect the mRNA and protein expression levels of phosphatidylinositol-3-kinase (PI3K/protein kinaseB (AKT/mammalian target of rapamycin (mTOR) signaling pathway. Results Compared with the control group, the escape latency increased, and the number of crossing the platform decreased in the model group (both P<0. 05). Compared with the model group, the escape latency decreased, and the number of crossing the platform increased in the experimental group (both P<0. 05). In the model group, the hippocampal neurons were loosely arranged and irregularly shaped, and the number was significantly reduced. The hippocampal neurons of the experimental group were relatively neatly arranged and the morphology was regular, and the number increased. Compared with the control group, the levels of TNF-α, IL-1β, IL-6, and MDA in the hippocampus of the model group increased, and the levels of SOD and GSH-Px decreased (all P<0. 05). Compared with the model group, the levels of TNF-α, IL-1β, IL-6, and MDA in the hippocampus of the experimental group decreased, and the levels of SOD and GSH-Px increased (all P<0. 05). The mRNA expression levels of PI3K, AKT, and mTOR and the protein expression levels of PI3K, p-AKT, and p-mTOR were lower in the model group than in the control group (all P< 0. 05). The mRNA expression levels of PI3K, AKT, and mTOR and the protein expression levels of PI3K, p-AKT, and pmTOR in the experimental group were higher than those in the model group (all P<0. 05). Conclusions Inosine can improve the cognition and learning memory in DCI rats, thus alleviating cognitive impairment. The mechanism may be related to activating PI3K/AKT/mTOR signaling pathway and reducing inflammatory response and oxidative stress. [ABSTRACT FROM AUTHOR]

Copyright of Tunnel Construction / Suidao Jianshe (Zhong-Yingwen Ban) is the property of Tunnel Construction 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 Tunnel Construction / Suidao Jianshe (Zhong-Yingwen Ban) is the property of Tunnel Construction 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 Engineering Geology / Gongcheng Dizhi Xuebao is the property of Journal of Engineering Geology 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 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.)

Copyright of Chinese Journal of Computational Mechanics / Jisuan Lixue Xuebao is the property of Chinese Journal of Computational Mechanics Editorial Office, Dalian University of 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.)

Copyright of Xinjiang Agricultural Sciences is the property of Xinjiang Agricultural Sciences 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 Food Science & Biotechnology is the property of Journal of Food Science & Biotechnology 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.)

传统基于锁相环（phase lock loop，PLL）电网跟踪型控制在电网短路比（short circuit ratio，SCR）较低或PLL带宽较高情况时，给电力系统引入负阻尼导致系统不稳定。为此，提出了一种不依赖PLL的用于区域间电网互联的新型电压源换流器（voltage source converter，VSC）虚拟同步控制。首先，构造VSC直流电压与受端系统频率间的下垂特性，当受端电网受扰后，受端换流器可为系统提供惯量支撑。其次，测量送端电压波动与直流电流波动可计算受端交流系统的频率扰动，通过模拟同步机的一次调频特性，在受端电网受扰时，送端电网可不依赖通信为受端电网提供频率支撑。与传统控制相比，在系统受扰时，利用电容储能及送端电网的调频能力为其提供频率支撑。基于PSCAD/EMTDC仿真算例验证了受端系统弱SCR场景、负荷变化场景下所提控制策略的有效性。

Copyright of Chinese Journal of Tissue Engineering Research / Zhongguo Zuzhi Gongcheng Yanjiu is the property of Chinese Journal of Tissue Engineering 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 Journal of Guangdong University of Technology is the property of Journal of Guangdong University of 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.)

Copyright of Chinese Journal of Explosives & Propellants is the property of Chinese Journal of Explosives & Propellants 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 Chongqing University of Technology (Natural Science) is the property of Chongqing University of 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.)