传统节日节物的性别修辞与符号指述关系研究——以“端午索”为例

中国传统节日节物是节日文化的物质载体,也是人类“意义生产”的特殊载体。节俗活动和节物也可看成主体的一种“言说”行为,具有一定的修辞功能。端午节历史上一个重要节物——“端午索”就极具性别修辞意义和符号指述关系。社会生产和分工是端午索确立女性修辞的技术基础和物质前提。端午索的修辞意义及其指述关系大致可分为夫妻指向的符号意义和母子关系的符号意义。这两种修辞意义及其指述关系既存在共同点,又具有差异性。深入研究包括端午索在内的众多传统节日节物的性别修辞与符号指述关系,对当今继承和发扬传统节日文化具有十分重要的现实意义。

不同植物生长调节剂对冬小麦生长及产量的影响

为考察不同植物生长调节剂对农作物生长状况及产量的影响,以氨基寡糖素、复硝酚钠和胺鲜酯为处理药剂,以复合肥(18-15-12)为药剂载体,于冬小麦播种前底施于土壤,测定了不同生育时期冬小麦的株高、主根长、须根数、分蘖数、叶片数、顶节长、穗长、旗叶长、颖果数等指标。结果表明:氨基寡糖素在冬小麦前期能促苗生根,中期能促叶、增加分蘖数,提高冬小麦产量;复硝酚钠主要表现在中后期能促进冬小麦株高和旗叶的生长;胺鲜酯在冬小麦前期对茎叶、须根数,在中期对顶节长、颖果数具有促进作用,但后期对顶节长、旗叶长和颖果数有抑制作用;复硝酚钠和胺鲜酯均会降低冬小麦产量。

低工作压力的混合物节流制冷机的实验研究

报告了液氮温区采用气体混合物作工质的微型节流制冷机的实验研究结果。实验表明，采用混合物工质是提高节流制冷机效率的有效途径。

PP_(333)调控黄瓜子叶节培养物的花芽形态分化

应用离体黄瓜子叶节花芽分化实验系统,研究了PP333在黄瓜花芽分化进程中的作用.组织培养结果显示,0.3mg·L-1PP333处理显著促进离体黄瓜子叶节培养物的花芽分化,直接花形成率由对照的16.86%升高至36.02%,直接花芽/总芽的比值达到最高,约为对照的1.7倍;营养芽形成率和营养芽/总芽的比值均降至最低,分别为对照的72%和59%.组织切片结果显示,0.3mg·L-1PP333处理明显提高黄瓜子叶节培养物的花芽原基百分率和花芽原基/总原基的百分率,增幅分别为42%和50%,而营养芽原基百分率则较对照降低约47%.实验结果发现,适宜浓度的PP333处理可以促进培养物所生成原基向花属性方向发育,是PP333处理促进黄瓜子叶节培养物花芽形成的主要原因.

端午节节气起源与节物习俗——以河南省唐河县为研究对象

端午节有深刻的文化渊源和丰富的节物风俗,传承了近两千年,但是端午节的物质材料在现当代社会中已经不易获取,同时由于社会生活变迁的影响,端午节的部分民俗活动正逐渐淡出人们的生活世界。本文主要分析河南省唐河县端午节的起源、习俗、禁忌等,让人们更好地了解端午节。

物理性腰交感神经节切除治疗下肢缺血性疾病

目的:探讨物理性腰交感神经节切除在治疗下肢缺血性疾病的疗效.方法:应用射频技术对40例下肢缺血性疾病的肢体热凝切除其腰交感神经节,观察患肢SPO_2趾脉搏波幅,足背皮肤温度,疼痛VAS评分变化和肢体溃疡的愈合情况分析其治疗效果.结果:射频手术后患肢SPO_2脉搏波幅比手术前明显增宽,差异有显著性(P<0.05);患肢足背皮肤温度比射频消融前升高,但差异无统计学意义(P>0.05).手术后患肢疼痛VAS评分和溃疡面积均较手术前有明显改善(P<0.05).结论:应用射频行腰交感神经节物理性切除治疗下肢缺血性疾病疗效佳、微创、并发症少,是治疗下肢缺血性疾病的有效方法.

人工全髋关节置换治疗股骨近端骨肿瘤:疗效及安全性分析

背景:随着医疗水平的提高,肢体恶性肿瘤保肢手术的价值日益提高,目前已替代截肢,成为当今肢体肿瘤外科治疗的主流与发展方向。但目前为止,对股骨近端肿瘤还没有统一的手术适应证,仍存在争议。目的:观察人工全髋关节置换联合瘤段扩大切除治疗股骨近端骨肿瘤的效果。方法:选取中南大学湘雅二医院收治的股骨近端骨肿瘤患者并随机分为对照组和观察组,每组30例。对照组患者根据病情选择病灶刮除,瘤体壁灭活,自体和(或)异体骨、人工骨混合植骨后行植入物内固定治疗。观察组患者接受瘤段扩大切除加人工全髋关节置换治疗。比较两组患者手术时间、术中术后出血量、住院时间及关节功能情况。2年后对患者进行回访,比较两组患者的转移复发率、死亡率以及生活质量。结果与结论:两组患者手术时间及术中出血量间无显著性差异(P>0.05),但观察组患者住院时间短于对照组,关节功能恢复优良率(83%)高于对照组(53%),术后2年内转移复发率(7%)和死亡率(3%)均低于对照组(30%,23%)。观察组患者生活质量各项指标均优于对照组,差异有显著性意义(P<0.05)。提示人工全髋关节置换治疗股骨近端骨肿瘤安全有效。

《文心雕龙》的“物色论”与桐城派文论“声色观”的比较

《文心雕龙·物色》篇所论“物色”为气象影响下的动态节物,其中感物论部分与《诗三百》以少总多的诗例材料被姚永朴引入《文学研究法·功效》篇,认为有“达情”“博物”的文学功能。然而,刘勰的“物色”论不同于桐城派的“声色”论,前者论节物对创作主体的冲击,更侧重情感激发,属文学发生论;后者将文章的社会效益与文学性结合起来讨论,以声色服务于文章义理,关联写作学。前者所论物色讨论的是文章素材,重点是如何表达内容;后者所论色泽,以炼字、造句、隶事为色泽三要,是文章辞采问题。刘勰虽然也用“声色”一词,但没有以此为文学范畴的明确意识。《文镜秘府论》所录旧题王昌龄《诗格》与桐城派古文家分别对“物色”与“声色”理论有进一步阐释与运用。

定量磁共振成像在关节软骨中的应用研究进展

在临床上,关节软骨损伤是一种常见病,其发生发展可由外伤、骨性关节炎(osteoarthritis, OA)以及剥脱性骨软骨炎等原因造成,而且这种损坏发生后很难修复。关节软骨损伤主要表现为关节疼痛及功能障碍,关节软骨的损伤以及退变都不同程度地发生在老年人及长期剧烈运动的人群中。关节镜检查被认为是诊断关节软骨病变的金标准。但由于其有创检查的性质,对检查者的技术水平要求很高,且无法深入了解软骨的内部情况。定量磁共振成像(quantitative magnetic resonance imaging, qMRI)既可显示软骨形态学变化,又可以定量评估软骨的生化成分,由于该技术具有无创、良好的软组织分辨力、多参数、多平面成像的优势,它能以非侵入性的定量测量来敏感地监测软骨的微细变化,提供可靠和可重复的成像生物标志物。

中国传统生态观的历史鉴戒

中国传统文化中蕴藏着丰富而深刻的生态智慧。天人合一、节物利用、以时禁发等生态观是古代先哲总结的人与自然和谐相处的经验。但随着现代工业和科技的高歌猛进,人与自然的矛盾逐渐激化,产生了诸多的生态环境问题。对此,应以史为鉴,同自然共生共存、对自然敬重敬畏、利用自然资源有节有度,努力建设美丽的地球家园。

Effect of Osmotic Stress with PEG6000 on Osmotic Adjustment Solute in Seedling Leaves of Chenopodium album L.

[ Objective] The purpose was to discuss drought resistance mechanism of Chenopodium album L. and supply theoretical basis and practical guidance for artificial cultivation and popularization of C. album. [ Method] C. album seedlings grown to 6th leaf stage were conducted osmotic stress treatment with PEG6000 osmotic whose concentration was set up as 0, 5%, 10% and 20% and the various physiological indices of the 3rd -5th function leaves in upper plant were determined after being treated for 0, 1,3, 5, 7 and 9 d. [ Result] Under osmotic stress with 5% PGE, the relative water content （RWC） of C. album reduced less. Under osmotic stress with 10%, the RWC in seedling leaves of C. album decreased to 62% on the fifth day and the leaves began to wither. Under osmotic stress with 20%, the RWC in seedling leaves of C. album decreased to 61.9% on the third day and the leaves appeared withering, and the RWC decreased to 48.6% on the 7th day and the leaves were dry and yellow. Proline contents in seedling leaves of C. album under osmotic stress with 5%, 10% and 20% PEG were 7.64, 10.9 and 29.4 times of CK on the 7th day. [ Conclusion] C. album hed some adaptability to moderate osmotic stress, but the PEG osmotic stress with high concentration and long time might lead to severe damage on C. album.

Effects of Drought Stress on Osmotic Regulation Substances of Five Catalpa bungei Clones

[Objective] This study aimed to investigate the effects of drought stress on osmotic regulation substances of Catalpa bungei clones. [Method] Potting experimental was carried out with plastic film sealing method, to differentiate the degrees of drought stress based on changes in soil water content and leaf water potential and investigate variations in contents of osmotic regulation substances（free proline,soluble sugar and soluble protein） in leaves of five Catalpa bungei clones under different degrees of drought stresses. [Result] According to changes in soil water content and leaf water potential, the whole process of drought stress was divided into normal level（CK, with soil water content of 97.49% and leaf water potential of-0.54MPa）, light drought（LD with soil water content of 59.96% and leaf water potential of-1.28 MPa）, mediate drought（MD with soil water content of 34.19% and leaf water potential of-2.32 MPa） and severe drought（SD with soil water content of 14.52%and leaf water potential of-2.99 MPa）. The soil water content and leaf water potential of five Catalpa bungei clones reached the highest correlation in exponential fitting, with an average R2of 0.989 3（P0.001）. The free proline content in leaves of five Catalpa bungei clones increased rapidly with the increasing degree of drought stress（P 0.001）. To be specific, free proline contents of Catalpa bungei clones015-1 and 7080 were 34.39 and 33.41 times of the normal level under severe drought conditions, which reached an extremely significant level（P0.001）; the free proline content of Catalpa bungei clone 1-3 rapidly increased to（855.46±227.52） μg/g Fw under light drought conditions. The soluble protein content in leaves showed different variation trends. To be specific, the soluble protein content of Catalpa bungei clone 7080 was the lowest at various drought stages and reached（1.644 ±0.137）mg/g Fw under normal conditions; the soluble protein content of Catalpa bungei clone 1-3 was relatively high under normal conditions and was reduced rapidly under light drought conditions, showing different response patterns. [Conclusion] Osmotic regulation substances in leaves of five Catalpa bungei clones all have certain response to drought stress. Free proline is the most important osmotic regulation substance, followed by soluble protein, while soluble sugar makes no significant contribution. According to changes in content of osmotic regulation substances, Catalpa bungei clone 7080 has relatively high capacity and good drought resistance, while Catalpa bungei clone 1-3 has the rapidest response to drought stress.

肿节风水提物及其市售制剂的HPLC特征图谱研究

目的建立肿节风水提物的HPLC特征图谱并明确其特征色谱峰的化学成分,对肿节风水提物及其市售制剂的质量进行评价。方法以Ultimate XB-C18色谱柱（250 mm×4.6 mm,5μm）,乙腈-水（各含0.1%甲酸）为流动相梯度洗脱,体积流量为1.0 mL/min,柱温：30℃,检测波长为330 nm;以共有模式特征图谱为对照,对不同厂家的肿节风水提物及其市售制剂进行相似度评价。结果建立的肿节风水提物的HPLC特征图谱具有良好的稳定性、精密度、重现性。不同厂家生产的12批肿节风水提物及20批市售制剂与共有模式对照特征图谱的相似度分别在0.883-0.987和0.797-0.982。其中8个特征色谱峰经化学指认,分别为新绿原酸、绿原酸、隐绿原酸、-βhydroxypropiovanillone、咖啡酸、异嗪皮啶、迷迭香酸-4-O-葡萄糖苷和迷迭香酸。结论本研究建立了涵盖肿节风中抗炎活性成分与特征成分的HPLC特征图谱,反映了肿节风水提物及相关制剂的多成分的整体面貌,为全面、有效控制肿节风及相关制剂的质量奠定了科学基础。

Physical layer design of wireless sensor network nodes

Major consideration dimensions for the physical layer design of wireless sensor network （WSN） nodes is analyzed by comparing different wireless communication approaches, diverse mature standards, important radio frequency （RF） parameters and various microcontroller unit （MCU） solutions. An implementation of the WSN node is presented with experimental results and a novel ＂one processor working at two frequencies＂ energy saving strategy. The lifetime estimation issue is analyzed with consideration to the periodical listen required by common WSN media access control （MAC） algorithms. It can be concluded that the startup time of the RF which determines the best sleep time ratio and the shortest backoff slot time of MAC, the RF frequency and modulation methods which determinate the RX and TX current, and the overall energy consumption of the dual frequency MCU SOC （ system on chip） are the most essential factors for the WSN node physical layer design.

Newly recorded species of the genus Isohypsibius (Tardigrada;Hypsibiidae) from China

This paper reports two newly recorded species, lsohypsibius lunulatus Iharos, 1966 and lsohypsibiusprosostomus Thulin, 1928, of the genus lsohypsibius （Tardigrada; Hypsibiidae） from China. The specimens of lsohysibius lunulatus were collected from Taibai Mt （34°18′N, 107°42′E） at 2,500 m a.s.1, and those oflsohypsibius prosostomus from Taibai Mt （34°10′N, 107°35′E） at 2,000 m above sea level. All specimens are deposited at the College of Life Sciences, Shaanxi Normal University, China. A key to the Chinese species of lsohypsibius was also given.

Two newly recorded species of the genus Itaquascon(Tardigrada;Hypsibiidae) from China

This paper reports two newly recorded species, Itaquascon placophorum Maucci, 1972 and Itaquascon umbellinae Barros, 1939, of the genus Itaquascon （Tardigrada; Hypsibiidae） from China in the first time. The specimens of Itaquascon placophorum were collected from Tsinling Mountains （33°28′N, 108°29′E） at 2,040 m above the sea level and those ofltaquascon umbellinae from Taibai Mt. （34°21′N, 107°39′E） at 1,500 m above the sea level. All specimens are deposited at the College of Life Sciences, Shaanxi Normal University, China.

肿节风水提物诱导白血病CEM细胞凋亡的机制

目的探讨肿节风水提物诱导CEM细胞凋亡作用的机制。方法用浓度不同的肿节风水提物对CEM细胞发生作用24、48、72h后,采用逆转录PCR技术检测凋亡相关基因bcl-2、bax和p53的表达,研究肿节风诱导白血病CEM细胞凋亡的机制。结果肿节风水提物能降低CEM细胞bcl-2基因的表达,并随药物浓度的升高、作用时间的延长,bcl-2基因的表达逐渐下降,作用48、72h后,与对照组比较有显著差异(P<0.05);同时能增强bax和p53基因表达,且随用药浓度的加大和作用时间的延长呈正比关系,与对照组比较有显著差异(P<0.05)。结论肿节风水提物诱导白血病CEM细胞凋亡的机制与下调bcl-2基因和上调bax基因的表达,使bcl-2/bax的比值下降,同时还与上调p53基因的表达有关。

Two newly recorded species of the genus Hypsibius (Tardigrada;Hypsi-biidae) from China

This paper reported two newly recorded species, Hypsibius convergens Urbanowicz, 1925 and Hypsibius hypostomus Bartos, 1935, of the genus Hypsibius （Tardigrada; Hypsibiidae） from China. Both species were collected from Taibai Mt, Shaanxi Province. All specimens are deposited at the College of Life Sciences, Shaanxi Normal University, China.

Study on the Comparison of Arthropod Communities in Three Kinds of Cruciferous Vegetable Fields at High Mountainous Area

[Objective]This research aimed to compare arthropod communities in different cruciferous vegetable fields at high mountainous area and provide guidance for pest control. [Method] The main arthropod species in 3 kinds of erueiferous vegetable fields at high mountainous area were investigated, the composition of arthropod community in different vegetable fields were analyzed. [Result] The main arthropod species in erueiferous vegetables fields at high mountainous area were similar, but had different quantity compositions. The richness was the highest in radish field. [Conclusion] Crop species had great influence on biological community; we should focus on the main pests in the process of pest control.

Advances in the Use of Exogenous Plant Growth Regulators on Litchi

In this paper,we reviewed the advances in the quality and functions of several exogenous plant growth regulators widely used on litchi,and in the applications of exogenous plant growth regulators on litchi production and fresh keeping of litchi,aiming at providing reference for future litchi production and improvement in litchi quality.