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为保证多舱体系变电站的钢结构预制舱单元在主变压器火灾下的安全性，提出了一种以蒸压轻质混凝土板作为围护材料的附加防火层构造；该构造基于建筑工业化的发展背景，不仅可在工厂预制，现场施工亦简单快捷。基于碳氢化合物火灾升温曲线，对既有多舱体系变电站所采用的复合墙体及所提出的附加防火层构造进行了时长为3 h的受火试验；其中，5个附加防火层试件的设计考虑了重复受火、钩头螺栓锚固长度、板厚、干密度等级、板材连接方式等参数的影响。结果表明，由于热桥效应，复合墙体试件中的构造钢柱所对应的背火面测点温升在107 min后达180 ℃，无法满足该场景下的隔热性要求；采用所提出附加防火层构造的试件在受火3 h后均可满足隔热性和完整性要求，其中齐口连接形式的最不利试件背火面测点最高温升为143.8 ℃。另外，齐口连接方式较错口连接方式在隔热性及施工便利性方面均具有优势；较短的钩头螺栓锚固长度有助于降低热桥效应；更高的干密度等级有利于提升耐火性；100 mm厚的ALC板已经具有足够的安全冗余。

为研究模块化钢结构建筑平面布局方案的智能生成式设计方法，分别基于平面可行域的有限离散化、不同的变量定义方法、约束条件和目标函数，形成了多目标非线性约束整数规划问题和线性整数规划问题，并分别提出了基于遗传算法和平面密铺算法的求解方法。通过一例基于L形平面可行域的数值算例，阐释了所提出方法的可行性和有效性。数值算例结果表明，在相同目标函数下的模块化钢结构建筑布局方案最优解不唯一；基于遗传算法的智能生成式方法可在较小的计算代价下得到较优的可行解，并可为模块单元尺寸的选型提供依据；基于平面密铺算法的智能生成式方法适应于不同的模块单元集，并在给定模块类型的基础上给出模块单元总数最低的布局方案。通过对比2种智能生成式方法的寻优结果，建议采用基于遗传算法的智能生成式方法初步确定模块单元的尺寸，并进一步结合2种智能生成式算法求解不同的最优平面布局方案。

模块化钢结构建筑拥有标准化和工业化程度高、建造速度快等突出优势，现已成为建筑工业化发展的重要方向。模块间快速可靠的连接节点是充分发挥模块化建筑优势和保证结构整体性的关键。以施工现场难以快速拼接、多模块间连接操作困难、模块连接与墙板存在冲突三个主要技术难题为导向，归纳国内外柱承重模块化钢结构建筑模块间连接节点的研究现状，探讨国内外已有研究中提出的多种模块间连接节点形式难以支撑模块化钢结构建筑应用与推广的原因。针对目前模块间连接节点存在的问题，分析模块间连接节点被广泛适用的重要特征，建议在进行模块间连接节点设计时充分考虑模块化建筑多场景的使用需求，指出模块间连接节点的发展趋势，为柱承重模块化钢结构建筑的推广和应用提供参考。

单向螺栓是一种仅在一侧操作便能完成安装的螺栓，因此在闭口截面构件中的连接具有优势。预拉力是保障高强度螺栓连接抗拉刚度的重要参数，但单向螺栓的预拉力和扭矩之间的关系尚不明确。分析了自锁式单向高强螺栓在安装过程与拉伸过程中的受力情况，给出了单向螺栓预拉力的计算方法。对于三种直径、两种强度的标准化自锁式单向螺栓和非标准化自锁式单向螺栓进行了拉伸试验，并基于拉伸试验的荷载-位移曲线，得到了不同型号自锁式单向螺栓在不同拉伸试验中的钢板分离荷载，并根据公式计算得到了单向螺栓在不同安装扭矩下的预拉力值。参考同型号的高强度螺栓给出了自锁式单向高强螺栓的建议安装扭矩和预拉力值，单向螺栓可达到普通高强度螺栓预拉力值的90%以上。

提出了一种模块化建筑钢结构模块间螺栓-抗剪键节点，并分析了其受力性能。该节点的构造形式一方面实现了竖向承载与水平承载方式的分离，便于节点进行设计和分析；另一方面使得模块间连接操作在室内就可以完成，适用于多种安装位置。通过理论分析得到了双模块连接节点抗拉承载力、抗剪承载力和抗弯承载力的计算方法。使用ABAQUS建立该节点的有限元模型并进行数值模拟，验证节点承载力计算方法的有效性。通过对比双模块连接节点和四模块连接节点的数值模拟结果，说明了共用连接板对节点受力性能影响较小，从而证明双模块连接节点的承载力计算方法也适用于其他多模块连接节点。

能源互联网时代，用户参与能源消费与生产的互动将变得容易。在此背景下，区别于传统意义上用户用能成本的概念，提出了用户用能三重价值概念—空间价值、时间价值、柔性价值，来反映用户参与能源消费与生产互动中的用能价值。分析了用户用能的柔性价值挖掘对系统优化运行的影响，构建了考虑用户用能柔性价值的电力系统优化运行模型。该模型计及了柔性价值挖掘对系统功率平衡和备用容量约束的影响。多个场景下的算例研究表明，通过挖掘用户用能的柔性价值，不仅能有效增加风电消纳能力，还可以明显降低系统运行成本和碳排放。

能源互联网的快速发展为传统能源电商的升级带来了新的机遇。面对能源变革、国企改革的新形势，加快提升能源电商的地位与作用，形成新一代能源电商发展模式是促进能源企业转型的重要手段。本文在梳理传统能源电商发展现状与存在问题的基础上，引入Osterwalder商业模式组成要素模型，以电网企业为例分析了电商在企业经营活动中的地位变化，并通过SWOT分析模型研究了电网企业建设电商平台的内部优势、劣势与外部机遇、威胁，为能源企业建设新一代能源电商提供借鉴与参考。

Copyright of Journal of Atomic & Molecular Physics (1000-0364) is the property of Journal of Atomic & Molecular Physics 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.)

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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.)

Cultivated land is the most basic element of food production. Currently, there is a prominent contradiction between the expansion of food demand and the regional shortage of food production. It is of great significance to seek a more reasonable pattern of cultivated land utilization to improve the total factor productivity of food. Based on remote sensing monitoring data of land use/land cover change（LUCC）, this paper applied GIS software to extract the relevant data of cultivated land use patterns in 2000, 2005, 2010, and 2015. At the same time, data envelopment analysis model was used to estimate the total factor productivity of grain in three provinces and cities in eastern and northern China in 2000, 2005, 2010, and 2015. Based on the analysis of the changes in cultivated land use patterns and the measurement of the total factor productivity of grain, a panel data model was constructed using indicators selected from the perspective of changes in cultivated land use patterns to quantitatively analyze their impact on the total factor productivity of grain. The results showed that, first, the four period averages of the total factor productivity of grain in the cities of three northeastern provinces were 0.81, 0.78, 0.82, and 0.83, respectively. The spatial distribution of the total factor productivity of grain changed from relatively uniform at the beginning to local agglomeration. Second, there was a negative correlation between the cultivated land transfer rate and cultivated land patch fragmentation degree and the total factor productivity of grain, while there was a positive correlation between the cultivated land area ratio, cultivated land transfer rate, and cultivated land patch aggregation degree and the total factor productivity of grain. Third, the increase in the total factor productivity of grain in the three northeastern provinces mainly stemmed from the increase in the area of cultivated land, the transfer of forest land and unused land to cultivated land, and the aggregation of cultivated land in river basins. The decrease in the total factor productivity of grain mainly stemmed from the reduction in the transfer of cultivated land and the occupation of cultivated land by construction land. This research shows that the pattern of arable land use should be strictly planned, land consolidation should continue, and the degree of aggregation of arable land should be improved in order to ensure the effective quantity of arable land, improve the agglomeration and rationality of arable land use patterns, and promote the improvement of the total factor productivity of food. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Beijing University of Traditional Chinese Medicine is the property of Journal of Beijing University of Traditional Chinese Medicine 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 Forensic Medicine / Fayixue Zazhi is the property of Journal of Forensic Medicine 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.)

Motor neuron disease (MND), a clinical refractory disease, can be classified as “a disease of flaccidity and spasticity” in traditional Chinese medicine ( TCM). Many doctors have their own ideas regarding the treatment of syndrome differentiation, but there is no clear consensus. The concept of toxins damaging collaterals was developed from the theory of “toxins damaging brain collaterals” put forward by academicia Wang Yongyan, which marks the pathological process of toxicity accumulation and toxicity to collaterals, causing the spread of toxicity, directly damaging the shape and quality of the zang-fu organs and resulting in rapid deterioration of the disease. Combined with the theory of TCM and modern research, the pathological changes of toxins damaging collaterals are consistent with the characteristics of occult, extensive, and intractable lesions of MND. It is suggested that toxins damaging collaterals may be the core pathogenesis of the occurrence and development of MND, namely, the accumulation of toxins from external contraction and internal damage in the medullary collaterals leads to damage to the medullary collaterals, imbalance of qi and blood, metabolic imbalance, and subsequent brain and spinal cord injuries, leading to MND. Moreover, qi deficiency and internal wind-related pathogenesis are extended from toxins damaging collaterals. Qi deficiency and toxins damaging collaterals influence each other, leading to the worsening of disease. Wind images of MND muscles may be induced by toxins damaging collaterals. Therefore, the treatment principle of detoxifying and regulating collaterals to remove evil, replenishing qi, and nourishing yin to solidify the root is put forward, emphasizing supplementing qi and detoxifying, nourishing yin and dispelling wind, and regulating collaterals, in order to expand the options for MND treatment and further improve the clinical effect. [ABSTRACT FROM AUTHOR]

Copyright of Chinese Journal of Arteriosclerosis is the property of Chinese Journal of Arteriosclerosis 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.)

经皮冠状动脉介入术（PCI）是冠状动脉粥样硬化性心脏病的常用治疗方法。光学相干断层成像（OCT）是 分辨率高达10 µm的腔内影像学技术。在PCI术前，应用OCT评估冠状动脉粥样硬化斑块，可明确动脉粥样硬化斑 块的易损性，检测斑块破裂、斑块糜烂、微通道形成、钙化结节和巨噬细胞浸润情况；OCT诊断冠状动脉狭窄、夹层的 敏感度及特异度均较高；OCT还可用于冠状动脉复杂性病变（冠状动脉分叉病变、冠状动脉钙化病变）的诊断。PCI 术前得到的OCT数据可指导PCI术中支架型号选择，确定PCI支架着陆点。OCT可用于评价PCI术后植入支架膨胀 和贴壁情况、观察支架边缘夹层、组织脱垂或支架内血栓形成等并发症发生情况。PCI术后随访中可采用OCT观察 PCI术后支架表面内皮修复情况，评估PCI治疗后支架内新动脉粥样硬化斑块，明确PCI支架植入失败的原因。 [ABSTRACT FROM AUTHOR]

AIM: To investigate the effect of polymyxin B on hepatitis B virus （HBV） transcription and replication. METHODS: The cytotoxicity of polymyxin B in HepG2-NTCP, HepAD38, HepG2. 2. 15, HepG2, Huh-7 and PLC/PRF/5 cells was examined by MTT assay. The HBV-infected HepG2-NTCP cells and HepG2. 2. 15 cells with stable HBV replication were treated with 10, 50 and 100 nmol/L polymyxin B, and the mRNA and DNA levels of HBV in the cells were measured by RT-qPCR. The levels of hepatitis B surface antigen （HBsAg） and hepatitis B e antigen （HBeAg） in the cell supernatants were quantified by ELISA. The regulatory effect of polymyxin B on HBV transcription and replication was clarified. Subsequently, we used transcriptome sequencing to screen nuclear factor-κB （NF-κB） as the effector molecule of polymyxin B regulating HBV transcription and replication, and we determined the regulatory effect of knockdown and overexpression of NF-κB on HBV transcription and replication. We used dual-luciferase reporter assay to determine the effect of NF-κB on the activity of Cp, Xp, Sp1 and Sp2 promoters. Finally, a reverse complementation assay was used to investigate whether the regulation of HBV transcription and replication by polymyxin B is dependent on NF-κB. RESULTS: The MTT assay results showed that polymyxin B did not exhibit significant toxicity in HepG2-NTCP, HepAD38, HepG2. 2. 15, HepG2, Huh-7 and PLC/PRF/5 cells when used at concentrations less than 100 μmol/L. Polymyxin B decreased the HBV RNA, HBV DNA, HBsAg and HBeAg levels in HBV-infected HepG2-NTCP cells and HepG2. 2. 15 cells with stable HBV replication in a concentration-dependent manner. Transcriptome sequencing revealed that polymyxin B significantly decreased the expression level of NF-κB in HBV-infected HepG2-NTCP cells. Furthermore, overexpression of NF-κB significantly increased the levels of HBV RNA, HBV DNA, HBsAg and HBeAg in HBV-infected HepG2- NTCP cells, and the opposite effect was found when NF-κB was knocked down. Moreover, the results of dual-luciferase reporter assay showed that NF-κB enhanced HBV Sp2 promoter activity. The reverse complementation assay revealed that polymyxin B regulates HBV transcription and replication in a manner dependent on NF-κB. CONCLUSION: Polymyxin B inhibits HBV transcription and replication by down-regulating NF-κB and inhibiting HBV Sp2 promoter activity. [ABSTRACT FROM AUTHOR]

Copyright of Chinese Journal of Oil Crop Sciences is the property of Oil Crops Research Institute of Chinese 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 Journal of Agricultural Science & Technology (1008-0864) is the property of Journal of Agricultural 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 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 Journal of Agricultural Science & Technology (1008-0864) is the property of Journal of Agricultural 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.)

Objective: To analyze the effect of intra aortic balloon counterpulsation（IABP) on patients with acute myocardial infarction（AMI) complicated with ardiogenic shock（CS) undergoing percutaneous coronary intervention（PCI) and the risk factors of postoperative in-hospital death. Methods: 105 patients with AMI complicated with CS who were treated in our hospital from June 2020 to May 2022 were selected. The patients treated with PCI directly were set as the control group（n=59 cases), and the patients treated with PCI assisted by IABP were set as the study group（n=46 cases). The postoperative cardiac indexes [left ventricular ejection fraction（LVEF), left ventricular end diastolic diameter（LVEDD) and left ventricular end systolic diameter（LVESD）], myocardial zymogram indexes [cardiac troponin T and troponin I, creatine kinase isoenzyme（CK-MB）] and postoperative major cardiovascular adverse events were compared between the two groups. The patients were divided into survival group（n=74) and death group（n=31）according to whether they survived at discharge. The clinical data of the two groups were compared, and the risk factors of in-hospital death were analyzed by multivariate logistic regression model. Results: The LVEF of the two groups after operation was increased, LVEDD and LVESD were decreased, and LVEF of the study group was higher than that of the control group, and LVEDD and LVESD were lower than those of the control group（P＜0.05). The myocardial zymogram indexes of the two groups after operation were significantly decreased compared with those before operation, and the levels of troponin I, troponin T and CK-MB of the study group were lower than those of the control group（P＜0.05). There were 5 cases of recurrent myocardial infarction and 7 cases of acute thrombosis of the control group after operation, 2 cases and 3 cases of the study group respectively（P＞0.05). There were 23 deaths of the control group, and 8 deaths of the study group. The number of deaths of the study group was lower than that of the control group（P＜0.05). The age, Killip grade ≥ grade III, hyperlipidemia, LVEF ＜ 40%, proportion of TIMI blood flow grade ≤ grade II, leukocyte count and serum creatinine level of the death group were higher than those of the survival group, and systolic blood pressure, diastolic blood pressure, hemoglobin, troponin I,troponin T, CK-MB, LVEF and IABP assisted were lower than those in the survival group（P＜0.05). Multivariate logistic regression analysis showed that age ≥ 65 years, Killip grade ≥ grade III, LVEF ＜ 40% and TIMI blood flow grade ≤ grade II were the risk factors for in-hospital death of patients（P＜0.05). Conclusion: IABP assisted supported PCI can effectively improve cardiac function in patients with AMI complicated with CS. Age ≥ 65 years, Killip grade ≥ grade III, LVEF ＜40%, TIMI blood flow grade ≤ grade II are the risk factors for in-hospital death. [ABSTRACT FROM AUTHOR]

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Copyright of Journal of Atomic & Molecular Physics (1000-0364) is the property of Journal of Atomic & Molecular Physics 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 Chinese Journal of Lung Cancer is the property of Chinese Journal of Lung Cancer 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 this paper, the influence of the applied electric field on the microstructure and energy characteristics of the ion- crosslinked polyethylene is studied. The molecular model of the crosslinked polyethyleneis established by the molecular simulation method, and the geometry of the model is optimized by the semi-empirical method while applying an external electric field along the X axis. The total molecular energy, dipole moment, polarizability, molecular orbital energy, energy gap, infrared spectrum and charge distribution of the ionically cross - linked polyethylene are calculated and analyzed. It is concluded that with the increase of the applied electric field, the molecular structure of the cross - linked polyethylene will change. When the applied electric field is too large, the S - Pb - S bond of the cross - linked polyethylene molecular ion salt bridge constructed in this paper will break and form free base. The external electric field will cause the charge inside the molecule to transfer from the end of the cross - linked polyethylene carbon chain to the ionic salt bridge. The Pb atom charge at the salt bridge will continue to accumulate, and when it reaches the critical point, it will be broken to form Pb radicals with a larger charge. Under the action of an external electric field, the stability of the cross - linked polyethylene molecules is further affected and its performance is reduced. The research results provide a reference for the aging of the cross - link ed polyethylene. [ABSTRACT FROM AUTHOR]

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目的　对比观察股骨近端防旋髓内钉（PFNA）及加长PFNA 在伴骨质疏松症不稳定型股骨粗隆间骨折 （IFF）中的应用效果，并从创伤应激程度、骨代谢角度探讨其机制。方法　前瞻性选取伴骨质疏松症不稳定型IFF 患者100 例，按随机数表法分为研究组和对照组各50 例。对照组采用PFNA 内固定术治疗，研究组采用加长PFNA 内固定术治疗。记录两组手术情况（手术时间、术中出血量）、术后康复情况（下地负重时间、住院时间、骨折愈合时 间）、并发症情况，分别于术前、术后7 d 检测血清创伤应激指标去甲肾上腺素（NE）、超氧化物歧化酶（SOD）、血管 紧张素Ⅱ（AngⅡ），分别于术前及术后3、3 个月采用髋关节功能评分量表（Harris）评估髋关节功能、视觉模拟评分 法（VAS）评估疼痛程度，分别于术前、术后3 个月采用酶联免疫吸附法检测血清骨代谢指标人抗酒石酸磷酸酶 （TRACP-5b）、Ⅰ型前胶原氨基末端前肽（PINP）、β-胶原降解产物（β-CTｘ）。结果　研究组术中出血量多于对照 组，手术时间、下地负重时间长于对照组，但住院时间、骨折愈合时间均短于对照组（P 均＜ 0． 05）；术后7 d，两组血 清NE、SOD、AngⅡ水平均较术前升高，且研究组高于对照组（P 均＜ 0． 05）；术后3、3 个月，两组Harris 评分均高于 术前而VAS 均低于术前，且研究组Harris 评分均高于对照组而VAS 均低于对照组（P 均＜0． 05）；术后3 个月，两组 血清PINP 水平均高于术前而TRACP-5b、β-CTｘ 水平均低于术前，且研究组血清PINP 水平均高于对照组而TRACP- 5b、β-CTｘ 水平均低于对照组（P 均＜ 0． 05）；研究组髋内翻发生率低于对照组（P ＜ 0． 05）。结论　PFNA 及加长 PFNA均适用于骨质疏松症不稳定型IFF 患者的内固定治疗。与PFNA 比较，加长PFNA 可改善骨代谢，提高髋关 节功能、减轻疼痛程度，且能减少髋内翻的发生；但PFNA 存在手术时间长、创伤性大的不足，不适宜手术耐受性较 差的患者. [ABSTRACT FROM AUTHOR]

Copyright of Oil Drilling & Production Technology / Shiyou Zuancai Gongyi is the property of Shiyou Zuancai Gongyi Bianjibu 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 Northwest A & F University - Natural Science Edition is the property of Editorial Department of Journal of Northwest A&F University (Natural Science Edition) 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 Atomic & Molecular Physics (1000-0364) is the property of Journal of Atomic & Molecular Physics 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 Forensic Medicine / Fayixue Zazhi is the property of Journal of Forensic Medicine 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 Food & Machinery is the property of Food & Machinery 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 Acta Scientiarum Naturalium Universitatis Sunyatseni / Zhongshan Daxue Xuebao is the property of Sun-Yat-Sen 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 Chinese Journal of Liquid Crystal & Displays is the property of Chinese Journal of Liquid Crystal & Displays 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] In order to reveal the features of nitrogen uptake and utilization in rice genetic populations with different sink capacity type. [ Method] A total of 114 chromosome single segment substitution lines ( CSSSLs ) were analyzed in two consecutive years under field condition, and subcategorized into 6 types, according to their sink size by MinSSw ( Minimum Square Sum within Groups ) method. [ Results] ( i) The sink capacity ranged from 11.53 - 27.66 g·m-2, and the yield ranged from 311. 74 - 763.35kg · 666.7 m-2. Along with increase in the sink capacity, the yield improved; (ii) The N uptake in the large sink capacity type lines was more than that in other types at the maturity stage, but the N use efficiency for grain yield, N use efficiency for dry matter production and the N harvest in the large sink capacity type were the least; ( iii) The path analysis and correlation analysis suggested that the N uptake and N use efficiency for grain output at maturity stage had a positive effect on the formation of sink capacity, and the former one was larger than the latter one ; ( iv) The N uptake in the large sink capacity type were mora than in other types at heading stage and grain-filling stage; ( v) The growth duration in the in the large sink capacity type was lesser, but the N uptake intensity was larger than the other types; ( vi) The panicle number per unit area in the large sink capacity type had a distinct advantage, as well as the N uptake per panicle. [ Conclusion] The sink capacity and yield in the high sink capacity type were more than in other types, it was mainly due to its high nitrogen absorption and nitrogen absorption intensity, especially during the grain-filling stage. [ABSTRACT FROM AUTHOR]

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 Journal of Forensic Medicine / Fayixue Zazhi is the property of Journal of Forensic Medicine 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.)

In order to solve the problems of data availability, confidentiality and integrity in local heterogeneous networks, a three-stage system design model of terminal detection, data storage access, and secure channel establishment and transmission is proposed. Firstly, the terminal system is scanned and detected to avoid the data unavailability problem caused by attack or incomplete hardware layer cleaning. Secondly, the data encryption storage access and self-destruction mechanism are set to realize the data confidentiality function and eliminate the privacy disclosure problem. Finally, SSL and VPN technologies are used to realize the secure establishment of the channel and the complete and secure transmission of the data. Through the prototype model design and the simulation experiment, the test and analysis are carried out, and the results show that the available precision of terminal detection achieves more than 90%, the encryption speed of the security function is less than 0.5 MB/s, the self-destruction protection mechanism is effective, and the full transmission speed of the channel data is increased by about 275% on average. It can be found that the model can be of high reference value for network data security detection and protection. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Forensic Medicine / Fayixue Zazhi is the property of Journal of Forensic Medicine 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.)

Copyright of Chinese Medical Equipment Journal is the property of Chinese Medical Equipment Journal 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 Henan Agricultural Sciences is the property of Editorial Board of Journal of Henan 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 24-hour ambulatory electrocardiography(AECG) combined with treadmill exercise test(TET) in diagnosing latent coronary heart disease(LCHD). MethodsWe selected 100 patients definitely diagnosed with LCHD by coronary angiography(CAG) in our hospital from January 2015 to February 2018. The clinical diagnosis results of 24-hour AECG, TET and CAG were analyzed, respectively. ResultsBetween 24-hour AECG and TET, the sensitivity(82.81% vs. 82.54%), specificity(61.11% vs. 67.56%), accuracy(75.00% vs. 77.00%), and negative and positive predictive values(66.67% vs. 69.44%, 79.10% vs. 81.25%) did not vary significantly(P>0.05). The specificity(91.89%) and positive predictive value(94.23%) of the tandem method(AECG combined with TET) were higher than either of the two methods(P<0.05) while the sensitivity(95.23%) and negative predictive value(88.00%) of the parallel method were also significantly higher(P<0.05). ConclusionThe tandem and parallel methods of AECG combined with TET are obviously more valuable than single examination in the diagnosis of LCHD. They can effectively improve the diagnostic accuracy. [ABSTRACT FROM AUTHOR]