开展插花艺术活动课,提高学生的审美素质

插花艺术活动课融艺术、自然、审美为一体,把知识传授和实践紧密结合起来,能增强学生的美感体验,培养学生欣赏和创造美的能力。我们在教学过程中解放思想,转变观念,不断总结新的经验,把好重要教学环节,使插花艺术活动课取得良好的效果,提高学生的审美素质。     

高效液相色谱法分析和检测青梅花、枝、叶中有机酸的种类和含量

用高效液相色谱法检测青梅花、枝、叶中有机酸的种类和含量。色谱条件:色谱柱为Agilent TC-C18柱(250 mm×4.6 mmi.d.,5μm),流动相为含3%(V/V)甲醇的0.01 mol/L KH2PO4水溶液(pH2.85),流速1 mL/min,柱温30℃,紫外检测波长为210 nm。该方法相对标准偏差介于0.36%~1.61%之间,回收率在92.7%~104.2%之间,各种酸的线性相关系数r>0.9943。该高效液相法可以对柠檬酸、苹果酸、草酸、酒石酸、抗坏血酸、乳酸、醋酸、马来酸、富马酸和琥珀酸这10种有机酸进行快速、有效的定性定量分析。实验结果表明,梅枝30%乙醇提取物中有机酸总量为5.75%,主要是柠檬酸和酒石酸;梅叶30%乙醇提取物中有机酸总量为5.86%,主要是草酸和柠檬酸;梅花30%乙醇提取物中有机酸含量相对较低。     

双勾写意花鸟画发展历史探究

双勾写意花鸟画是近几年形成的新的写意花鸟画形式。而双勾技法自古有之,双勾写意花鸟画的发展一直隐现在写意花鸟画的发展历史过程中。梳理与探究双勾写意花乌画发展的历史,有利于人们对“双勾写意”这一独特表现形式引起足够的认识和关注,从而促进写意花鸟画的发展与创新。     

三种鲜切花保鲜剂的保鲜效果

观察了3种鲜切花(唐菖蒲、月季、康乃馨)不同配方的保鲜剂在武汉自然条件下,对切花外观品质和瓶插寿命的影响。从中筛选出各种鲜切花的较佳保鲜配方:配方1-9(2%S+250mg/L8-HQ+200mg/LCA+50mg/LCoSO4+100mg/LAl2(SO4)3+25mg/LAgNO3+15mg/LEDTA)对唐菖蒲的保鲜效果最好,可明显延长其瓶插寿命;配方2%S+250mg/L8-HQ+200mg/LCA+25mg/LAgNO3+15mg/LEDTA对月季的保鲜效果较好,能很好地延长花期,其瓶插寿命比对照组长12d;配方3%S+250mg/L8-HQ+50mg/LCA+20mg/LBA对康乃馨的保鲜效果最佳,其瓶插寿命达到了47d,保鲜效果显著。     

Antioxidant activity and protective effect of Clitoria ternatea flower extract on testicular damage induced by ketoconazole in rats

Background

Ketoconazole (KET), an antifungal drug, has adverse effects on the male reproductive system. Pre-treatments with antioxidant plant against testicular damage induced by KET are required. The flowers of Clitoria ternatea (CT) are proven to have hepatoprotective potential. However, the protective effect on KET-induced testicular damage has not been reported.

Objective

To investigate the protective effect of CT flower extracts with antioxidant activity on male reproductive parameters including sperm concentration, serum testosterone level, histopathology of the testis, and testicular tyrosine phosphorylation levels in rats induced with KET.

Methods

The antioxidant activity of CT flower extracts was determined using 2,2-diphenyl-1-picrylhydrazyl (DPPH) and ferric reducing antioxidant power (FRAP) assays. Male rats were treated with CT flower extracts (10, 50, or 100 mg/kg BW) or distilled water via a gastric tube for 28 d (preventive period: Days 1–21) and induced by KET (100 mg/kg BW) via intraperitoneal injection for 7 d (induction period: Days 22–28). After the experiment, all animals were examined for the weights of the testis, epididymis plus vas deferens and seminal vesicle, serum testosterone levels, sperm concentration, histological structures and diameter of testis, and testicular tyrosine phosphorylation levels by immunoblotting.

Results

The CT flower extracts had capabilities for DPPH scavenging and high reducing power. At 100 mg/kg BW, the extract had no toxic effects on the male reproductive system. Significantly, in CT+KET groups, CT flower extracts (50 and 100 mg/kg BW) alleviated the reduction of reproductive organ weight parameters, testosterone levels, and sperm concentration. In addition, CT flower extracts gave protection from testicular damage in KET-induced rats. Moreover, in the CT100+KET group, CT flower extracts significantly enhanced the expression of a testicular 50-kDa tyrosine phosphorylated protein compared with that of other groups.

Conclusions

C. ternatea flower extracts possessing antioxidant activity are not harmful to the male reproductive system and can protect against testicular damage in KET-induced rats.     

论河北面花模子装饰图形中线造型之美

面花模子是河北地区民间美术留存的一种艺术形式。河北面花模子的装饰图形线形造型丰富多样,具有民间美术造型典型特征和独特的审美价值,其装饰图形富于动态变化之美、生命力之美和质朴率真之美。     

草本花卉在潍坊园林绿化中的应用

为美化潍坊市的环境,我们通过调查,确定了适合潍坊地区园林绿化应用的主要草本类花卉种类。本文总结分析了草本花卉在潍坊地区园林景观建造中的主要应用形式、特点,谨呈同仁参阅指正。     

Pollen Sensitivity to Ultraviolet-B Suggests Floral Structure Evolution in Alpine Plants

<正>The diversifi cation and evolution of fl oral traits are driven by both biotic and abiotic agents.The most well-studied agent is rain,which can wash away pollen grains,reduce pollen viability and dilute nectar thus affecting the reproductive fitness directly or indirectly.Strong ultraviolet radiation(especially UV-B radiation)is also known to reduce pollen viability,and strong UV-B radiation is a typical characteristic of alpine environments;accordingly,it may exert selection pressures on fl oral traits of alpine plants as well.However,the influence of UV-B radiation on the evolution of flower structure remains relatively unexplored.According to previous research,the reflexed flower stalk of Anisodus luridus during anthesis     

伏羲祭祀乐舞——蜡花舞的现代体育文化价值研究

研究伏羲祭祀乐舞——蜡花舞的起源和发展,挖掘整理蜡花舞的健身价值、健心价值、旅游经济价值等体育价值,旨在弘扬伏羲体育文化,弘扬我国民族传统体育文化。     

浅谈吴昌硕先生的花鸟画

写意画作为中国美术的重要组成部分,它能完整地传达中国美术的精神实质和内涵,再现中国人的美术发展观。吴昌硕先生的写意花鸟画,深受徐渭和八大山人影响,加之他书法、篆刻功底深厚,把书法、篆刻的行笔、运刀及章法、体势融入绘画,形成了富有金石味的独特画风,在中国绘画史上,开创了文人画的新纪元。