Calculation and Analysis of Modified Gear Time-varying Meshing Stiffness based on Matlab by Dongjiang Cao, Peng Shang, Yang Zhao

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New lower bounds for the minimum eigenvalue of the Hadamard product of nonsingular M-matrices(非奇异M-矩阵Hadamard积的最小特征值的新下界) by ZHAOJianxing(赵建兴), SANGCaili(桑彩丽)

“…针对非奇异M-矩阵B与非奇异M-矩阵A的逆矩阵A-1的Hadamard积的最小特征值τ(B◦A-1)的估计问题，首先利用矩阵A的元素给出A-1各元素的上下界序列，然后利用这些序列和Brauer定理给出τ(B◦A-1)单调递增收敛的下界序列.最后，通过数值算例验证理论结果，显示所得下界序列比现有结果精确，且能收敛到真值.…”
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DIC光纤的内包层参数研究 by 李经春

“…大沉积厚度、浅凹陷内包层（DIC）光纤广泛地应用于单模长距离陆地通信和海底通信。本文研究这种结构光纤的内包层参数（b/a,δ）对模截止特性和漏模损耗特性的影响,并对这些影响给出了相应的实验证明。…”
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Noise Analysis of Bus Transmission Shaft and Improvement of Vibration Performance by Zhu Zhao, Huang Jun, Zhang Haiyuan, Jiang Hui

“…By using the analysis of noise figure and the vibration waterfall map data,the transmission shaft intermediate support bracket course resonance is confirmed.According to the theory of vibration isolation and finite element analysis,by reducing the stiffness of the intermediate support rubber and increasing the natural frequency of the intermediate support bracket,the vehicle resonance phenomenon is greatly reduced and the vehicle noise is reduced by 4 dB（A）. This method has important reference significance in solving the noise of transmission shaft,structural optimization design and test verification.…”
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Sedative effect of low-dose remidazolam combined with propofol in elderly patients received gastrointestinal endoscopy by YANG Yachong, SHUAI Shichao, HAN Jing, YUE Lihui, LIU Yan, ZHU Xichun

“…<b>Objective</b>To observe the safety and effectiveness of low-dose remidazolam combined with propofol in painless gastroenterscopy in elderly patients. <b>Methods</b>A total of 120 elderly patients who underwent painless gastroenteroscopy in Hebei General Hospital from February 2022 to July 2022 were selected. …”
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Research on Noise Reduction of RV Reducers by Gear Modification Based on the Orthogonal Test by Liu Wenchuan, Zhang Yinghui, He Weidong

“…The results show that the noise reduction effect of the RV reducer is significant for the involute gear modification, and the maximum noise value is reduced by 7.78 dB(A). The virtual prototype of the RV110E type reducer is built with Romax software, and the parameters of involute gear modification are imported. …”
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Experimental Study on Vibration and Noise Control of the Gear System with Different Damping Liquid Viscosity of Novel IDG by Zhang Yipeng, He Lidong, Hou Qiyang, Li Geng

“…At the same time, IDG can effectively reduce the noise of the gear system, and the maximum viscosity can reduce 7.6 dB（A） noise. It is further proved that IDG has excellent vibration and noise reduction characteristics, which ensures the smooth operation of the gear transmission system and provides a new idea for vibration and noise reduction of the gear system.…”
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EFFECTS OF SURFACE MICROMORPHOLOGY CHARACTERISTICS ON FATIGUE PERFORMANCE OF DOUBLE COLD EXPANDED HOLE by JIANG TingYu, WANG Yang, YANG Zhen, WANG Peng, WAN ZhiCheng, ZHANG QuanLi, SU HongHua

“…With the increasing of the number of micro-notches in the hole wall, the stress concentration factor can be alleviated effectively, and stress concentration factor K_t is positively correlated with the depth-width ratio b/a and the distance-width ratio d/（2a）. The double cold expansion process can reduce the surface roughness of the hole wall by 21%～49%, which can effectively alleviate the notch stress concentration and improve the fatigue performance of the hole.…”
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基因編輯技術對歐盟基因 改造生物管理之挑戰 The Challenge of Gene Editing Technology for EU Genetically Modified Organisms Regulation by 謝碧蓮 Pi-Lien Hsieh

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A Polarization Beam Splitting-rotation-multiplexing Integrated Device with Thick Silicon Core Layer by Ze-lin SONG, He-ming CHEN

“…At the input wavelength of 1.55 μm, it has a high polarization extinction ratio of 45 dB, and an insertion loss of 0.53 dB. A bandwidth of 75 nm is achieved when the polarization extinction ratio is greater than 30 dB and the insertion loss is less than 1 dB. …”
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Comparative Experimental Research on Radiated Noise Characteristics of Straddle Monorail Trains and Metro Trains Passing through Elevated Tracks by Zixue DU, Jian WANG

“…Under both straight and curved track conditions, the average maximum radiated noise SPL of straddle monorail trains is 4 to 10 dB(A), lower than that of metro trains.…”
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Relationship between clockwise rotation of ECG and adverse pregnancy outcome by HE Min, LYU Li-juan

“…<b>Objective</b> To observe the incidence of adverse pregnancy outcome in pregnant women with clockwise cardiac rotation indicated by electrocardiogram(ECG) and analyze its clinical significance. <b>Methods</b> A retrospective study was performed on 12 827 pregnant women who were admitted to Guangdong Province Maternity and Child Health Hospital for ECG examination from January 1st, 2016 to December 31st, 2018(from card establishment to 27⁺6 weeks of gestation). …”
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Influence of selection balloon pressure value by invasive arterial blood pressure on hemostasis effect of puncture point after radial arteriography by LU Yurong, XIA Siliang, YU Hong

“… <b>Objective</b> After transradial angiography, based on the non-invasive blood pressure of the patient's healthy upper limb after surgery, the adjustmenf of the pressure value of the radial artery hemostat airbag can achieve both hemostasis and reduce the occurrence of finger swelling on the puncture side, improve the patient's comfort. <b>Methods</b> A total of 274 postoperative patients received coronary angiography at Nanjing Jiangbei Hospital from February to November 2022 were selected and randomly divided into control group and observation group (<i>n</i>=137, each). …”
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Research on fault diagnosis and online monitoring method of M3C submodules by LI Chenchen, YE Zhibin, NING Lianhui, SHI Yuchao, WU Jing, TANG Ming, XU Guofeng

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Adverse reactions of atezolizumab versus durvalumab based on OpenFDA by LU Xinglan, ZHAO Feng, ZHOU Qiuyun, WANG Fang, LU Tao

“…<b>Methods</b> The ADR data of atezolizumab and durvalumab from January 1, 2004 to January 28, 2022 were retrieved through the application programming interface (API) access to the interactive icon panel of the OpenFDA ADR endpoint. <b>Results</b> A total of 13 630 and 5 374 ADR reports respectively related to atezolizumab and durvalumab were obtained. …”
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Impacts of different degrees of hypertensive disorders of pregnancy on their blood indexes by WANG Yanqing, YANG Hailan, MA Huijing

“…<b>Objective</b> To analyze the changes of blood indicators in pregnant women with different degrees of hypertensive disorders of pregnancy (HDP). <b>Methods</b> A retrospective study was conducted on the clinical data of the patients with HDP admitted to the First Hospital of Shanxi Medical University from July 2017 to July 2022, and the patients were divided into HDP group, mild pre-eclampsia (PE) group (without severe PE) and severe PE group (<i>n</i>=75, each). …”
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Influence of comprehensive nursing on complications of patients with neuromyelitis optica by GUO Yuanyuan, CAI Jihong, LIANG Yanchun, YUAN Meng

“…<b>Objective</b>To explore the effects of comprehensive nursing during treatment on incidence of complications and nursing satisfaction in patients with neuromyelitis optica （NMO）. <b>Methods</b>A total of 96 NMO patients admitted to Beijing Tiantan Hospital from June 2020 to May 2022 were selected and randomly divided into control group （with routine nursing, n=48） and observation group （with comprehensive nursing, n=48）. …”
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Value of contrast-enhanced ultrasound and magnetic resonance imaging in the diagnosis of glioma grading by LI Jing, WANG Rui, ZHU Limin

“…<b>Objective</b> To explore the effect of magnetic resonance imaging （MRI） and contrast enhanced ultrasound （CEUS） in the grading diagnosis of glioma. <b>Methods</b>A retrospective analysis was performed on the patients without glioma （control group, n=94） and with glioma （observation group, n=96） treated in No. 215 Hospital of Shaanxi Nuclear Industry from April 2017 to April 2022. …”
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Construction and validation of predictive model for intraoperative hypothermia in patients received radical gastrectomy for gastric cancer by ZHAO Lanhong, YANG Li, WANG Min, SONG Jing, LIU Zhaolan

“…<b>Objective</b>To construct and verify the risk prediction model for intraoperative hypothermia in patients received radical surgery for gastrointestinal cancer. <b>Methods</b> A total of 276 patients receiving radical gastrointestinal cancer surgery in the Affiliated Hospital of Qingdao University from November 2020 to June 2021 were selected by a convenient sampling as the model group. …”
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Thermal-fluid field coupling simulation and characteristic analysis on internal temperature of oil-immersed transformers by SHAO Xianjun, GAO Yiran, JIN Lingfeng, ZHAN Jiangyang, ZHENG Yiming, LI Yuan

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