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可见光响应型(CuAg)_xIn_(2x)Zn_(2(1-2x))S_2光催化剂的光催化制氢
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作者 张广山 王鹏 郑彤 《哈尔滨工业大学学报》 EI CAS CSCD 北大核心 2014年第6期34-38,共5页
为实现可见光下分解水制氢,用沉淀煅烧法合成系列(CuAg)xIn2xZn2(1-2x)S2光催化剂.采用X射线衍射仪(XRD)、紫外可见吸收光谱(UV-Vis)、电位粒径仪(DLS)、X射线能谱(EDS)、电感耦合等离子体质谱(ICP-MS)等方法研究了光催... 为实现可见光下分解水制氢,用沉淀煅烧法合成系列(CuAg)xIn2xZn2(1-2x)S2光催化剂.采用X射线衍射仪(XRD)、紫外可见吸收光谱(UV-Vis)、电位粒径仪(DLS)、X射线能谱(EDS)、电感耦合等离子体质谱(ICP-MS)等方法研究了光催化剂的能带结构,评价其光催化性能.结果表明,随着组成配比x值的增加,光催化剂的光吸收从紫外光向可见光扩展,禁带宽度逐渐变小.通过计算发现,光催化剂的导带电位逐渐接近氢的氧化还原电位.合成的(CuAg)xIn2xZn2(1-2x)S2(x=0.05~0.30)在可见光下都能光催化产氢,并且(CuAg)0.15In0.3Zn1.4S2(即x=0.15)具有最高的光催化制氢活性.调节组成配比可调控光催化剂的能带结构,有助于获得具有高活性和稳定性的可见光响应型光催化剂. 展开更多
关键词 光催化剂 (CuAg)xin2xZn2(1-2x)S2 可见光 制氢 水分解 禁带宽度
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酵母双杂交方法对牛CMYA1中Xin Repeat结构域的鉴定
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作者 王婷 岳英伟 +4 位作者 杨淑萍 靳聪飞 辛向博 张晓娟 郭宏 《天津农学院学报》 CAS 2017年第1期28-33,共6页
CMYA1是肌肉生长发育相关基因,其表达产物包含若干个由16个氨基酸构成的重复序列,该重复序列被命名为Xin Repeat。为确定CMYA1的蛋白结合核心结构域,本研究利用酵母双杂交方法,以牛CMYA1基因的表达产物中含有Xin Repeat的区域作为预测... CMYA1是肌肉生长发育相关基因,其表达产物包含若干个由16个氨基酸构成的重复序列,该重复序列被命名为Xin Repeat。为确定CMYA1的蛋白结合核心结构域,本研究利用酵母双杂交方法,以牛CMYA1基因的表达产物中含有Xin Repeat的区域作为预测结构域,通过对该区域的不同区段进行克隆建立酵母诱饵表达载体,并转化酵母菌,再与CMYA1的互作蛋白EIF3G和RPL35A进行酵母双杂交。结果表明,共获得了6个不同区段的CMYA1片段,并确定了4个Xin Repeat序列是蛋白结合结构域的最小功能单位。本研究结果有助于揭示CMYA1结构及Xin Repeat的功能,为进一步研究牛肌肉生长发育的分子机制提供理论依据。 展开更多
关键词 CMYA1 xin REPEAT 结构域 酵母双杂交
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Jin-Xin模型初边值问题整体光滑解的存在性
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作者 阮立志 《中南民族大学学报(自然科学版)》 CAS 2004年第4期88-90,共3页
运用特征线法和一阶拟线性双曲系统极大值原理 ,在松弛时间ε充分小的条件下 ,对初值不做任何小性假设 ,得到解的先验估计 ,证明了 Jin- Xin模型初边值问题整体光滑解的存在性 .
关键词 Jin-xin模型 极大值原理 整体光滑解
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APC,β-catenin和Axin在胸腺瘤中的表达及意义 被引量:2
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作者 牟光远 徐林浩 +4 位作者 陈旭 魏路军 孙刚毅 王万忠 李超 《潍坊医学院学报》 2013年第4期285-288,共4页
目的探讨APC,β-catenin 和Axin 在胸腺瘤中的表达及意义。方法采用免疫组织化学PV6000法分析87例胸腺瘤组织石蜡切片中APC,β-catenin和Axin的表达情况,及其表达与胸腺瘤组织分期及预后的关系。结果在Masaoka分期Ⅰ期、Ⅱ期、Ⅲ... 目的探讨APC,β-catenin 和Axin 在胸腺瘤中的表达及意义。方法采用免疫组织化学PV6000法分析87例胸腺瘤组织石蜡切片中APC,β-catenin和Axin的表达情况,及其表达与胸腺瘤组织分期及预后的关系。结果在Masaoka分期Ⅰ期、Ⅱ期、Ⅲ~Ⅳ期中,APC阳性表达率分别为92.0%,84.6%,72.7%,差异无显著性;β-catenin异常表达率分别为58.0%,92.3%,100.0%,差异有显著性;Axin在各分期之间的阳性表达率为24.0%,50.0%,54.5%,差异有显著性;在侵袭性胸腺瘤中β-catenin与Axin的表达差异有显著性,说明β-catenin及Axin与胸腺瘤的侵袭性有关,而APC与胸腺瘤的侵袭性无关;Kaplan-Meier生存分析显示APC阳性表达与阴性表达患者生存期比较,差异无显著性。β-catenin及Axin阳性表达患者术后生存期均低于其阴性表达者。相关性分析显示APC阳性表达和β-catenin阳性表达呈正相关,Axin,β-catenin表达无相关性,APC,Axin表达也无相关性。结论APC,β-catenin与Axin与胸腺肿瘤的发生发展有关;APC与胸腺瘤侵袭性无关,β-cate-nin,Axin与肿瘤的侵袭性有关。 展开更多
关键词 APC Β-CATENIN Axin 胸腺瘤 Masaoka分期
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Kai Xin San ameliorates scopolamine-induced cognitive dysfunction 被引量:12
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作者 Yu-Min Xu Xin-Chen Wang +12 位作者 Ting-Ting Xu Hong-Ying Li Shang-Yan Hei Na-Chuan Luo Hong Wang Wei Zhao Shu-Huan Fang Yun-Bo Chen Li Guan Yong-Qi Fang Shi-Jie Zhang Qi Wang Wei-Xiong Liang 《Neural Regeneration Research》 SCIE CAS CSCD 2019年第5期794-804,共11页
Kai Xin San(KXS, containing ginseng, hoelen, polygala, and acorus), a traditional Chinese herbal compound, has been found to regulate cognitive dysfunction; however, its mechanism of action is still unclear. In this s... Kai Xin San(KXS, containing ginseng, hoelen, polygala, and acorus), a traditional Chinese herbal compound, has been found to regulate cognitive dysfunction; however, its mechanism of action is still unclear. In this study, 72 specific-pathogen-free male Kunming mice aged 8 weeks were randomly divided into a vehicle control group, scopolamine group, low-dose KXS group, moderate-dose KXS group, high-dose KXS group, and positive control group. Except for the vehicle control group and scopolamine groups(which received physiological saline), the doses of KXS(0.7, 1.4 and 2.8 g/kg per day) and donepezil(3 mg/kg per day) were gastrointestinally administered once daily for 2 weeks. On day 8 after intragastric treatment, the behavioral tests were carried out. Scopolamine group and intervention groups received scopolamine 3 mg/kg per day through intraperitoneal injection. The effects of KXS on spatial learning and memory, pathological changes of brain tissue, expression of apoptosis factors, oxidative stress injury factors, synapse-associated protein, and cholinergic neurotransmitter were measured. The results confirmed the following.(1) KXS shortened the escape latency and increased residence time in the target quadrant and the number of platform crossings in the Morris water maze.(2) KXS increased the percentage of alternations between the labyrinth arms in the mice of KXS groups in the Y-maze.(3) Nissl and terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling staining revealed that KXS promoted the production of Nissl bodies and inhibited the formation of apoptotic bodies.(4) Western blot assay showed that KXS up-regulated the expression of anti-apoptotic protein Bcl-2 and inhibited the expression of pro-apoptotic protein Bax. KXS up-regulated the expression of postsynaptic density 95, synaptophysin, and brain-derived neurotrophic factor in the cerebral cortex and hippocampus.(5) KXS increased the level and activity of choline acetyltransferase, acetylcholine, superoxide dismutase, and glutathione peroxidase, and reduced the level and activity of acetyl cholinesterase, reactive oxygen species, and malondialdehyde through acting on the cholinergic system and reducing oxidative stress damage. These results indicate that KXS plays a neuroprotective role and improves cognitive function through reducing apoptosis and oxidative stress, and regulating synapse-associated protein and cholinergic neurotransmitters. 展开更多
关键词 Kai xin SAN cognitive DYSFUNCTION SCOPOLAMINE hydrobromide neuroprotection oxidative stress SYNAPTIC DYSFUNCTION apoptosis CHOLINERGIC system DYSFUNCTION DONEPEZIL neural regeneration
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ZnAlMg-xIn高温无铅钎料的显微组织及性能研究
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作者 闫鑫 杨晓军 +1 位作者 李建勇 雷永平 《焊接》 北大核心 2014年第1期30-33,69,共4页
通过在近共晶组织Zn4Al3Mg合金中适量添加In,得到了ZnAlMgIn四元高温无铅钎料。研究了In的添加量对ZnAlMg-xIn钎料的熔点、显微组织、电阻率及铺展面积的影响。结果表明:微量In的加入可适当降低钎料的熔点,而随着In含量(>2%)的增加,... 通过在近共晶组织Zn4Al3Mg合金中适量添加In,得到了ZnAlMgIn四元高温无铅钎料。研究了In的添加量对ZnAlMg-xIn钎料的熔点、显微组织、电阻率及铺展面积的影响。结果表明:微量In的加入可适当降低钎料的熔点,而随着In含量(>2%)的增加,在合金中出现了互不相容的两相,合金的显微组织趋向于不均匀化。 展开更多
关键词 高温无铅钎料 合金化 ZnAIMg-xln
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A Clinical Study of Safflower Yellow Injection in Treating Coronary Heart Disease Angina Pectoris with Xin-Blood Stagnation Syndrome 被引量:12
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作者 张琼 彭建华 张向农 《Chinese Journal of Integrated Traditional and Western Medicine》 2005年第3期222-225,共4页
Objective: To evaluate the clinical effect and safety of Safflower Yellow injection (SYI) in treating coronary heart disease angina pectoris (OHD-AP) with Xin-blood stagnation syndrome (XBSS). Methods: Adopted... Objective: To evaluate the clinical effect and safety of Safflower Yellow injection (SYI) in treating coronary heart disease angina pectoris (OHD-AP) with Xin-blood stagnation syndrome (XBSS). Methods: Adopted was the multi-centered, randomized, positive parallel controlled method, 448 patients with CHD-AP-XBSS were enrolled and divided into two groups, 336 in the tested group treated with SYI and 112 in the control group treated with Salvia injection by intravenous dripping once a day for 14 days, so as to observe the conditions of angina, electrocardiogram, and therapeutic effect on traditinal Chinese medicine (TCM) symptoms as well as the safety of the treatment. Results: The significantly effective rate and total effective rate in the tested group were 60.06% (194/323) and 91.02 % (294/323) respectively; those in improvement of TOM symptoms were 40. 18% (129/321) and 75.23% (243/323) respectively, which were better than those in the control group (P〈0.01). Conclusion: SYI Injection is effective and safe in treating OHD-AP-XBSS. 展开更多
关键词 Safflower yellow injection coronary heart disease angina pectoris xin-Blood stagnation syndrome
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Hydrological daily rainfall-runoff simulation with BTOPMC model and comparison with Xin'anjiang model 被引量:12
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作者 Hong-jun BAO Li-li WANG +2 位作者 Zhi-jia LI Lin-na ZHAO Guo-ping ZHANG 《Water Science and Engineering》 EI CAS 2010年第2期121-131,共11页
A grid-based distributed hydrological model, the Block-wise use of TOPMODEL (BTOPMC), which was developed from the original TOPMODEL, was used for hydrological daily rainfall-runoff simulation. In the BTOPMC model, ... A grid-based distributed hydrological model, the Block-wise use of TOPMODEL (BTOPMC), which was developed from the original TOPMODEL, was used for hydrological daily rainfall-runoff simulation. In the BTOPMC model, the runoff is explicitly calculated on a cell-by-cell basis, and the Muskingum-Cunge flow concentration method is used. In order to test the model's applicability, the BTOPMC model and the Xin'anjiang model were applied to the simulation of a humid watershed and a semi-humid to semi-arid watershed in China. The model parameters were optimized with the Shuffle Complex Evolution (SCE-UA) method. Results show that both models can effectively simulate the daily hydrograph in humid watersheds, but that the BTOPMC model performs poorly in semi-humid to semi-arid watersheds. The excess-infiltration mechanism should be incorporated into the BTOPMC model to broaden the model's applicability. 展开更多
关键词 digital elevation model BTOPMC model xin anjiang model daily rainfall-runoff simulation SCE-UA method humid watershed semi-humid to semi-arid watershed
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Neuroprotective mechanism of Kai Xin San: upregulation of hippocampal insulin-degrading enzyme protein expression and acceleration of amyloid-beta degradation 被引量:12
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作者 Na Wang Yong-ming Jia +5 位作者 Bo Zhang Di Xue Maharjan Reeju Yan Li Shu-ming Huang Xue-wei Liu 《Neural Regeneration Research》 SCIE CAS CSCD 2017年第4期654-659,共6页
Kai Xin San is a Chinese herbal formula composed of Radix Ginseng, Poria, Radix Polygalae and Acorus Tatarinowii Rhizome. It has been used in China for many years for treating amnesia. Kai Xin San ameliorates amyloid-... Kai Xin San is a Chinese herbal formula composed of Radix Ginseng, Poria, Radix Polygalae and Acorus Tatarinowii Rhizome. It has been used in China for many years for treating amnesia. Kai Xin San ameliorates amyloid-β (Aβ) induced cognitive dysfunction and is neuroprotective in vivo, but its precise mechanism remains unclear. Expression of insulin-degrading enzyme (IDE), which degrades Aβ, is strongly correlated with cognitive function. Here, we injected rats with exogenous Aβ42 (200 μM, 5 μL) into the hippocampus and subsequently administered Kai Xin San (0.54 or 1.08 g/kg/d) intragastrically for 21 consecutive days. Hematoxylin eosin and Nissl staining revealed that Kai Xin San protected neurons against Aβ-induced damage. Furthermore, enzyme linked immunosorbent assay, western blot and polymerase chain reaction results showed that Kai Xin San decreased Aβ42 protein levels and increased expression of IDE protein, but not mRNA, in the hippocampus. Our findings reveal that Kai Xin San facilitates hippocampal Aβ degradation and increases IDE expression, which leads, at least in part, to the alleviation of hippocampal neuron injury in rats. 展开更多
关键词 nerve regeneration NEURODEGENERATION traditional Chinese medicine Kai xin San insulin-degrading enzyme amyloid-β Alzheimer'sdisease Chinese herbal compound Aβ-degrading enzymes neurons Radix Ginseng Radix Polygalae Acorus Tatarinowii Rhizoma neuralregeneration
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Identification of protein targets for the antidepressant effects of Kai-Xin-San in Chinese medicine using isobaric tags for relative and absolute quantitation 被引量:4
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作者 Xian-Zhe Dong Dong-Xiao Wang +3 位作者 Tian-Yi Zhang Xu Liu Ping Liu Yuan Hu 《Neural Regeneration Research》 SCIE CAS CSCD 2020年第2期302-310,共9页
Kai-Xin-San consists of Ginseng Radix, Polygalae Radix, Acori Tatarinowii Rhizoma, and Poria at a ratio of 3:3:2:2. Kai-Xin-San has been widely used for the treatment of emotional disorders in China. However, no studi... Kai-Xin-San consists of Ginseng Radix, Polygalae Radix, Acori Tatarinowii Rhizoma, and Poria at a ratio of 3:3:2:2. Kai-Xin-San has been widely used for the treatment of emotional disorders in China. However, no studies have identified the key proteins implicated in response to Kai-Xin-San treatment. In this study, rat models of chronic mild stress were established using different stress methods over 28 days. After 14 days of stress stimulation, rats received daily intragastric administrations of 600 mg/kg Kai-Xin-San. The sucrose preference test was used to determine depression-like behavior in rats, while isobaric tags were used for relative and absolute quantitation-based proteomics to identify altered proteins following Kai-Xin-San treatment. Kai-Xin-San treatment for 2 weeks noticeably improved depression-like behaviors in rats with chronic mild stress. We identified 33 differentially expressed proteins: 7 were upregulated and 26 were downregulated. Functional analysis showed that these differentially expressed proteins participate in synaptic plasticity, neurodevelopment, and neurogenesis. Our results indicate that Kai-Xin-San has an important role in regulating the key node proteins in the synaptic signaling network, and are helpful to better understand the mechanism of the antidepressive effects of Kai-Xin-San and to provide objective theoretical support for its clinical application. The study was approved by the Ethics Committee for Animal Research from the Chinese PLA General Hospital(approval No. X5-2016-07) on March 5, 2016. 展开更多
关键词 BRAIN-DERIVED neurotrophic factor signal pathway depression ISOBARIC tags for RELATIVE and absolute quantitation Kai-xin-San neurogenesis protein network proteomics analysis synaptic plasticity traditional Chinese medicine
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Ecological Risk Assessment of Shan Xin Mining Area Based on Remote Sensing and Geography Information System Technology 被引量:2
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作者 Chaokui Li Jianhui Chen +2 位作者 Mengguang Liao Guo Chen Qinlan Zhou 《Journal of Geographic Information System》 2018年第2期234-246,共13页
In this paper, introducing new remote sensing and geographic information technology to solve the problem of data collection and analysis, this makes the study of ecological risk assessment very quick and accurate. Tak... In this paper, introducing new remote sensing and geographic information technology to solve the problem of data collection and analysis, this makes the study of ecological risk assessment very quick and accurate. Taking the Shan Xin mining area of the tin mine in Lengshuijiang of Hunan Province as the research object, using the remote sensing image data of three periods in 2005, 2010 and 2015, the remote sensing image is classified carefully and the landscape classification map of the mining area is obtained. The ecological risk index is introduced and the ecological risk values are sampled and interpolated on the ArcGIS platform. The ecological risk spatial distribution map based on the landscape pattern index was obtained. The ecological risk was divided into 5 levels by using the Jenks natural classification method, and each ecological risk grade area was counted. The research results show that: from year 2005 to year 2010, landscape ecological risk trend of the mining area is growing up;the trend rising area of landscape ecological risk is mainly in the southwest and northeast of the Shan Xin mining field;the area of higher and high ecological risk is increasing year by year;and the trend of dispersed development in space is obvious;the development trend of ecological risk in the mining area is rapidly increasing;in 2010 - 2015, the higher and high ecological risk area decrease slightly with the increasing of area of grassland and residential low vulnerability of landscape types;the ecological risk area showed a slow decreasing trend. The research results provide an objective reference for decision making of ecological environment governance. 展开更多
关键词 RS & GIS TECHNOLOGY Shan xin MINING Field ECOLOGICAL RISK Assessment Jenks NATURE Classification RISK Index
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芪苈强心胶囊降低慢性心力衰竭急性失代偿患者发生利尿剂抵抗风险的回顾性研究 被引量:3
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作者 冯超 蒋汉涛 +2 位作者 樊官伟 李澜 冯津萍 《中国全科医学》 CAS 北大核心 2024年第21期2578-2585,共8页
背景利尿剂抵抗与心力衰竭(HF)患者的病死率增加有关。芪苈强心胶囊是用于治疗HF的中药。目前缺乏其在改善利尿剂抵抗方面作用的临床证据。目的探讨芪苈强心胶囊能否降低慢性HF急性失代偿(ADCHF)患者发生利尿剂抵抗的风险并改善其预后... 背景利尿剂抵抗与心力衰竭(HF)患者的病死率增加有关。芪苈强心胶囊是用于治疗HF的中药。目前缺乏其在改善利尿剂抵抗方面作用的临床证据。目的探讨芪苈强心胶囊能否降低慢性HF急性失代偿(ADCHF)患者发生利尿剂抵抗的风险并改善其预后。方法纳入2018年1月—2022年6月在天津大学胸科医院CICU病区住院治疗的HF患者374例为研究对象,根据是否发生利尿剂抵抗将患者分为利尿剂抵抗组(118例)和非利尿剂抵抗组(256例)。收集患者的一般资料和实验室检查结果等。对患者随访12个月,观察因心血管事件再住院或全因死亡情况。绘制各组患者的Kaplan-Meyer生存曲线,生存曲线比较采用Log-rank检验。采用多因素Logistic回归分析探究患者发生利尿剂抵抗风险的影响因素。采用多因素Cox回归分析探究ADCHF患者发生终点事件的影响因素。结果利尿剂抵抗组年龄、体质量、N末端前体脑利钠肽(NT-proBNP)、血尿素氮、血肌酐、血尿酸、国际标准化比值(INR)高于非利尿剂抵抗组,24 h液体摄入量、估算肾小球滤过率(eGFR)、淋巴细胞绝对值、芪苈强心胶囊使用率低于非利尿剂抵抗组。多因素Logistic回归分析结果显示,使用芪苈强心胶囊(OR=0.363,95%CI=0.186~0.708,P=0.003)、24 h液体摄入量升高(OR=0.286,95%CI=0.177~0.461,P<0.001)是ADCHF患者发生利尿剂抵抗风险的保护因素。体质量增加(OR=1.064,95%CI=1.040~1.088,P<0.001)、血尿酸增高(OR=1.002,95%CI=1.000~1.004,P=0.027)是患者发生利尿剂抵抗风险的危险因素。Log-rank检验结果显示,利尿剂抵抗组无终点事件平均生存时间短于非利尿剂抵抗组(χ^(2)=11.866,P=0.001);未使用芪苈强心胶囊患者无终点事件平均生存时间短于使用芪苈强心胶囊患者(χ^(2)=6.502,P=0.011)。多因素Cox回归分析结果显示,使用芪苈强心胶囊(HR=0.536,95%CI=0.308~0.933,P=0.027)和使用血管紧张素受体脑啡肽酶抑制剂/血管紧张素转化酶抑制剂/血管紧张素受体阻滞剂(HR=0.435,95%CI=0.229~0.826,P=0.011)是患者发生终点事件的保护因素,总胆红素升高(HR=1.019,95%CI=1.008~1.030,P=0.001)、总胆汁酸升高(HR=1.029,95%CI=1.002~1.058,P=0.036)是患者发生终点事件的危险因素。结论在常规抗HF治疗的基础上使用芪苈强心胶囊可以降低ADCHF患者发生利尿剂抵抗的风险,同时降低这类患者1年内因心血管事件再住院或全因死亡的风险。 展开更多
关键词 心力衰竭 利尿剂抵抗 芪苈强心胶囊 回顾性研究
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血栓心脉宁片通过调控TGF-β_(1)和Runx2表达抑制血管平滑肌细胞钙化的研究 被引量:1
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作者 张晶 邓毅凡 +5 位作者 张钊源 刘娟 朱米雪 余吉玲 何胜虎 周玮 《现代中西医结合杂志》 CAS 2024年第5期609-613,共5页
目的探讨血栓心脉宁片是否可通过调控转化生长因子β_(1)(TGF-β_(1))和Runt相关转录因子2(Runx2)表达抑制血管平滑肌细胞的钙化。方法取对数生长期大鼠血管平滑肌细胞,实验分为5组:阴性组细胞加入DMEM培养液培养;钙化组加入β-磷酸甘油... 目的探讨血栓心脉宁片是否可通过调控转化生长因子β_(1)(TGF-β_(1))和Runt相关转录因子2(Runx2)表达抑制血管平滑肌细胞的钙化。方法取对数生长期大鼠血管平滑肌细胞,实验分为5组:阴性组细胞加入DMEM培养液培养;钙化组加入β-磷酸甘油(β-GP)作用24 h诱导血管平滑肌细胞钙化;血栓心脉宁低、中、高剂量组先分别加入125 mg/L、250 mg/L、500 mg/L的血栓心脉宁片培养24 h后再给予β-GP作用24 h。采用CCK-8法检测各组细胞活力,酶标仪检测各组细胞中钙含量、碱性磷酸酶(ALP)活性及TGF-β_(1)含量,Western blot法检测细胞中Runx2蛋白表达情况。结果与阴性组比较,钙化组细胞活力明显下降(P<0.05),细胞中钙含量、ALP活性、TGF-β_(1)含量及Runx2蛋白相对表达量均明显升高(P均<0.05);与钙化组比较,血栓心脉宁各组细胞活力均明显提高(P均<0.05),细胞中钙含量、ALP活性、TGF-β_(1)含量及Runx2蛋白相对表达量均明显降低(P均<0.05),且各指标均呈浓度依赖性变化。结论血栓心脉宁片可能通过调控TGF-β_(1)和Runx2的表达,抑制大鼠血管平滑肌细胞的钙化。 展开更多
关键词 血栓心脉宁片 钙化 血管平滑肌细胞 转化生长因子β_(1) Runt相关转录因子2
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Breeding and High-yield Cultivation Techniques for Oil Sunflower New Variety"Xin Kui No.27"
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作者 Wei DUAN Shengli LIU +2 位作者 Yantao LIU Peng WANG Hongye DONG 《Agricultural Biotechnology》 CAS 2022年第1期40-42,46,共4页
This paper introduced the breeding process,characteristics,yield performance,disease resistance,quality characters,and suitable production areas of the new early-maturing oil sunflower variety"Xin Kui No.27"... This paper introduced the breeding process,characteristics,yield performance,disease resistance,quality characters,and suitable production areas of the new early-maturing oil sunflower variety"Xin Kui No.27",and summarized high-yield cultivation techniques based on large-area continuous cultivation demonstration to serve agricultural production. 展开更多
关键词 New variety of oil sunflower "xin Kui No.27" BREEDING Cultivation Technology
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基于多时相RSEI的生态环境质量评价——以新民市为例 被引量:1
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作者 王井利 余鹏程 +2 位作者 蔡福 刘慧楠 高天娇 《湖北农业科学》 2024年第4期56-60,共5页
以辽宁省新民市作为研究对象,基于2014年、2017年、2020年的相近月份(5—6月)Landsat 8 OLI_TRIS数据,提取4个生态因子[绿度(NDVI)、湿度(WET)、干度(NDBSI)、热度(LST)],采用主成分分析法构建遥感生态指数(RSEI),对研究区域生态环境质... 以辽宁省新民市作为研究对象,基于2014年、2017年、2020年的相近月份(5—6月)Landsat 8 OLI_TRIS数据,提取4个生态因子[绿度(NDVI)、湿度(WET)、干度(NDBSI)、热度(LST)],采用主成分分析法构建遥感生态指数(RSEI),对研究区域生态环境质量时空演变特征进行评价。结果表明,2014年、2017年、2020年新民市RSEI的均值分别为0.397、0.348、0.506,呈先降后升的趋势。2014—2020年,生态环境质量等级为差和较差的区域主要分布在西北区域,面积占比由62.5%降至33.2%;生态环境质量等级为较好和好的区域主要分布在东南区域,面积占比呈明显的先降低后升高趋势,由21.3%先下降到18.4%后上升到37.0%。4个因子中绿度和湿度对生态环境质量起到正面作用,其中湿度的正面影响较为显著;干度和热度起到负面作用,其中干度的负影响较为显著。 展开更多
关键词 生态环境质量 Landsat8 OLI_TRIS 遥感生态指数(RSEI) 主成分分析 新民市
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两晋“碑文似赋”说补证 被引量:2
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作者 雷恩海 欧阳一锋 《聊城大学学报(社会科学版)》 2024年第1期82-93,共12页
碑文于两晋之时多为叙述性,近于赋之铺陈,故易受赋影响,常主动借鉴赋之写法。两晋碑文沿袭汉碑传统,在题材、句式、用韵上多与辞赋“同体异用”,且常以赋家笔法叙述碑主家族功勋、描绘历史背景、敷陈碑主德行事业,使得碑文辞采增华,赋... 碑文于两晋之时多为叙述性,近于赋之铺陈,故易受赋影响,常主动借鉴赋之写法。两晋碑文沿袭汉碑传统,在题材、句式、用韵上多与辞赋“同体异用”,且常以赋家笔法叙述碑主家族功勋、描绘历史背景、敷陈碑主德行事业,使得碑文辞采增华,赋化倾向更为明显。“碑文似赋”实与魏晋文学自觉相关,援赋笔破体为文,虽使碑文一改汉魏体制,篇幅增长,但在整体上增强了其文学性、可读性和感染力,强化了其文学张力,使得泛文学观念落到了实处。 展开更多
关键词 两晋 碑文似赋 赋心 赋迹 补证
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宫观官制度与南宋前中期信州文人群体 被引量:1
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作者 张振谦 《长江学术》 CSSCI 2024年第1期61-72,共12页
宫观官制度对宋代士人产生了重要影响,为他们的退居生活提供了基本保障,促进了地域文学的繁荣。南渡初期,吕本中与曾几先后领任宫观官寓居上饶,在他们的吸引下,信州一带的文人士大夫时常聚饮酬唱,形成了颇为闻名的地域文人群体。南宋中... 宫观官制度对宋代士人产生了重要影响,为他们的退居生活提供了基本保障,促进了地域文学的繁荣。南渡初期,吕本中与曾几先后领任宫观官寓居上饶,在他们的吸引下,信州一带的文人士大夫时常聚饮酬唱,形成了颇为闻名的地域文人群体。南宋中期,赵蕃监南岳庙闲居玉山30余年,接续吕、曾倡导的文化精神和文学传统,与当地耆旧诗人往来频繁,成为信州文人群体的核心人物之一。与此同时,辛弃疾因罢官而主管冲佑观赋闲带湖和瓢泉长达20年,其信州诗词透露出闲逸自适与愤懑不平交织的心态,塑造了人生最后阶段的双重自我形象:赋闲归耕的“稼轩居士”和壮志未酬的爱国文士。 展开更多
关键词 宫观官制度 信州文人群体 吕本中 曾几 赵蕃 辛弃疾
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微分形式新安江模型
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作者 梁忠民 赵建飞 +4 位作者 段雅楠 黄嘉璐 李彬权 王军 胡义明 《水科学进展》 EI CAS CSCD 北大核心 2024年第3期374-386,共13页
现有新安江模型数学上是代数方程并限于一阶差分方法求解,不可避免存在数值误差,探索数值求解误差控制新途径,对于提高模型计算精度具有重要意义。基于微分系统框架,识别新安江模型的状态变量和通量,推导其控制方程和本构方程,提出微分... 现有新安江模型数学上是代数方程并限于一阶差分方法求解,不可避免存在数值误差,探索数值求解误差控制新途径,对于提高模型计算精度具有重要意义。基于微分系统框架,识别新安江模型的状态变量和通量,推导其控制方程和本构方程,提出微分形式的新安江模型(ODE-XAJ),并采用四阶显式Runge Kutta法求解。数值实验结果显示,以解析解为基准,ODE-XAJ绝对误差处于或小于10^(-4)mm量级,可实现对解析解的高阶近似;以ODE-XAJ结果为基准,按归一化平均绝对误差评价,现有新安江模型的数值求解误差约为8.7%。典型流域应用结果显示,ODE-XAJ确定性系数提升0.02,洪量相对误差降低4.3%。研究表明,ODE-XAJ理论上分离了模型的数学方程与具体解法,可有效控制数值求解误差,提升模型模拟精度。 展开更多
关键词 新安江模型 数值误差 微分形式 Runge Kutta法 屯溪流域
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The Comparison between “Xin, Da, Ya” and “Dynamic Equivalence” and their Application in Translation Practice
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作者 李佩芸 邓高胜 《海外英语》 2018年第12期119-120,共2页
Yan Fu's"Xin, Da, Ya"and Eugene Nida's"dynamic equivalence"are two representative norms in translation circles.They both contribute greatly to China's translation theory. Although the s... Yan Fu's"Xin, Da, Ya"and Eugene Nida's"dynamic equivalence"are two representative norms in translation circles.They both contribute greatly to China's translation theory. Although the span in time and spaces exists between these two criteria,they share similarities in their basic views. This paper compared these similarities and discussed their application in translationpractice. 展开更多
关键词 英语 学习方法 阅读
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基于黄元御“水寒土湿木郁”理论探讨功能性便秘的诊治及其肠道微生态的改变
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作者 吴锋 祝珊珊 +3 位作者 肖秋平 林丽珠 曾于恒 吴小云 《世界中西医结合杂志》 2024年第9期1839-1845,1851,共8页
目的基于黄元御“水寒土湿木郁”理论探讨功能性便秘(Functional constipation,FC)的诊治,采用高通量测序技术探讨肉苁蓉汤对“水寒土湿木郁”型FC患者肠道微生态的影响。方法选取2020年9月—2022年1月期间厦门市中医院肛肠科便秘门诊... 目的基于黄元御“水寒土湿木郁”理论探讨功能性便秘(Functional constipation,FC)的诊治,采用高通量测序技术探讨肉苁蓉汤对“水寒土湿木郁”型FC患者肠道微生态的影响。方法选取2020年9月—2022年1月期间厦门市中医院肛肠科便秘门诊收治的“水寒土湿木郁”型慢性FC患者60例,采用随机数字表法分为对照组和治疗组,每组各30例。治疗组采用肉苁蓉汤,对照组口服聚乙二醇4000,疗程均为5周。其中肉苁蓉汤组20例,聚乙二醇组18例,分别采集两组患者治疗前后的自然排出的粪便(10.00±5.00)g,立即置于液氮中冷冻,再放入-80℃冰箱中保存,采用MagPure Soil DNA LQ Ki试剂,采用高通量测序技术分析菌群的变化,进行Alpha多样性指数分析,并分别使用Chao、Shannon及Simpson指数计算肠道菌群丰度和菌群多样性;采用LefSe技术分析治疗前后粪便样本中菌群组成中的差异性菌属。结果两组患者疗程结束后水寒土湿木郁证候量化积分,差异有统计学意义(P<0.05);两组患者疗程结束3个月后水寒土湿木郁证候量化积分,差异有统计学意义(P<0.05)。表明肉苁蓉汤组的疗效优于聚乙二醇组。稀释曲线表明测序数据量合理,基本能覆盖样本中所有的细菌种类;治疗后FC患者肠道菌群的Chno1指数高于治疗前,Shannon指数和Simpson指数均低于治疗前,但三者治疗前后的差异无统计学意义(P>0.05);门水平上各组肠道菌群中相对分布较高的菌属有Bacteroidota、Cyanobacteria、Campilobacterota、Deferribacterota;属水平上,各组肠道菌群中相对分布较高的菌属有Bacteroidota、Parabacteroides、Eubacterium_eligens_group、Alistipes、Lachnoclostridium。结论肉苁蓉汤治疗“水寒土湿木郁”型便秘可以取得中远期的疗效,可以增加肠道有益菌,改善肠道微生态。 展开更多
关键词 黄元御 《四圣心源》 肉苁蓉汤 功能性便秘 微生态
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