多用途植物甘草人工栽培技术

甘草是享有"国老"美誉的中药材,用途广泛,需求量大。介绍了甘草的生物学特性,详细总结了甘草的栽培技术措施、田间管理、病虫害防治、收获方法,并概述了甘草的用途。     

多用途植物甘草人工栽培技术

甘草是享有“国老”美誉的中药材,用途广泛,需求量大。介绍了甘草的生物学特性,详细总结了甘草的栽培技术措施、田间管理、病虫害防治、收获方法,并概述了甘草的用途。     

晋东南山地植物资源多样性研究

晋东南山地有丰富的野生植物资源 ,据调查有种子植物125科 ,512属 ,1090种(含变种)。按照经济用途将它们分为12类 ,其中1.纤维植物98种 ;2.油脂植物147种 ;3.芳香植物66种 ;4.鞣料植物65种 ;5.淀粉植物63种 ;6.果树植物82种 ;8.蜜源植物59种 ;8.饲料植物130种 ;9.药用植物312种 ;10.农药植物46种 ;11.野菜植物56种 ;12.观赏植物159种。此外 ,对中条山东部野生植物的开发利用和保护提出了建议     

河北省野生蔬菜资源初步研究

通过对河北省野生蔬菜资源进行的野外调查与研究发现,全省现有习见野生蔬菜共67科180余种.结合加工方法、食用特性、利用价值,对河北省野生蔬菜资源进行了分类研究,并对野生蔬菜的开发利用提出了加强良种选育、改良加工工艺等具体建议.     

与边塞大漠的心物共鸣——杨牧新边塞诗的抒情特征之一

杨牧常常用“移情”的手法使边塞的山川大漠,一草一木皆着“我”之色彩。于是,在杨牧的新边塞诗中不仅有“客体的主体化”,而且有“主体的客体化”,主客体的交融又使边塞化作了诗人生命的对象化存在。因而,杨牧的新边塞诗也就成了诗人和山川万物心灵对话的物化存在。     

水墨写意画造型特点分析

中国画的造型方式有别于其他画种,既不追求绝对的写实,又不主张脱离真实物象的过分夸张变形,而是力求在尊重客观对象的基础上,对形象进行适当的处理,使所表现的形象更加符合画家的主观意图,更加生动,更具表现力。“意象造型”是水墨写意画所采用的基本造型手段,也是中国画造型的显著特征。     

HDPE抗渗膜在高温天气下的施工工艺

HDPE抗渗膜作为防渗型土工合成材料,由于其抗拉强度高、防渗性能好、施工方便等特点,广泛应用于垃圾填埋场、污水处理厂、化工厂区的防渗加固中。结合工程实例,介绍HDPE防渗膜在石油化工钢储罐工程中的应用。     

一种典型自动控制原理实验教学设备研究

自动控制原理实验的模拟电路实验箱缺少典型的被控对象,在很大程度上限制了学生对自动控制原理的理解和应用。根据自动控制原理实验的特点,提出了采用小车、转盘作为被控对象,以直流伺服电动机作为执行机构的新的实验系统。实践表明,该系统不仅可以完成自动控制原理实验的验证性、设计性、综合性实验,而且学生可以此为基础,开发各种不同用途的控制系统,提高了实践应用能力。     

德化瓷器常见装饰图案的文化意蕴

德化瓷器除了别具一格的釉色外,在装饰工艺上也有非常吸引人的手法。它大量地采用了具有中国传统特色的动物、植物、文字等吉祥装饰图案,以简约的风格,生动地表现了广大群众喜闻乐见的各种吉祥事物,它们都分别表示着各种独特的的文化蕴含。     

永州民间防暑的野生植物

本文探讨几种永州市民间利用的具有清热防暑作用的植物及其简单用法,夏枯草、淡竹叶、金银花、鱼腥草等18种植物;充分证实了湘南古城——永州市人认识植物和利用植物的传统文化;有利于把民间用来防暑的植物与用法开发为人们春夏食用的现代绿色食品。     

What can we learn from the electromagnetic spectrum?

Electromagnetic radiation is all around us, and essential for the survival of all lifeforms. It provides valuable information about the physical world around us, feeds us by providing energy to plants, allows us to maintain human metabolism, and cures us of various diseases. This article deals with the various properties of electromagnetic radiation, its sources and detectors, its nature, and its uses. A brief discussion on the absorption spectrum of the Earth’s atmosphere and the atmospheric windows, and celestial objects seen through optical and radio telescopes is also provided.     

UNITANK池在城市污水处理厂中的应用

UNITANK技术先进,处理工艺选择性强,技术经济合理,易于管理,适合我国中小城市污水的治理的方向。因此成为环保工作者的研究的一个重点。本文介绍了UNITANK池的构造和处理城市生活污水的优点,同时介绍了邢台市污水处理厂中UNITANK池实际的运行状况和现存在的问题。     

A feast of flowers

Amongst their varied uses, flowers are also used as food. The purpose of this article is to review the pros and cons of some well-known and less-known edible flowers.     

浅谈崖柏根雕艺术

根雕艺术是古老而又需要与时俱进的一门艺术,在我国艺术品收藏市场中占有十分重要的地位。它是利用自然中的植物作为创作本体,因材施艺。近年来根雕艺术发展迅速,根雕材料品种繁多,造型各异,特别以崖柏这种独特植物进行创作和收藏的根雕艺术品渐渐走入我们的生活中,具有很高的观赏性,对收藏家更具有相当高的收藏价值。文章通过对崖柏根雕的自然美、选材及艺术修养等进行分析研究,以求开发出崖柏根雕更深层次的艺术美。     

A review of the use of pteridophytes for treating human ailments

The aim of this review was to explore the pharmacological activity of early tracheophytes (pteridophytes) as an alternative medicine for treating human ailments. As the first vascular plants, pteridophytes (aka, ferns and fern allies) are an ancient lineage, and human beings have been exploring and using taxa from this lineage for over 2000 years because of their beneficial properties. We have documented the medicinal uses of pteridophytes belonging to thirty different families. The lycophyte Selaginella sp. was shown in earlier studies to have multiple pharmacological activity, such as antioxidant, anti-inflammatory, anti-cancer, antidiabetic, antiviral, antimicrobial, and anti-Alzheimer properties. Among all the pteridophytes examined, taxa from the Pteridaceae, Polypodiaceae, and Adiantaceae exhibited significant medicinal activity. Based on our review, many pteridophytes have properties that could be used in alternative medicine for treatment of various human illnesses. Biotechnological tools can be used to preserve and even improve their bioactive molecules for the preparation of medicines against illness. Even though several studies have reported medicinal uses of ferns, the possible bioactive compounds of several pteridophytes have not been identified. Furthermore, their optimal dosage level and treatment strategies still need to be determined. Finally, the future direction of pteridophyte research is discussed.     

芦荟在食品中的应用及展望

芦荟是一种应用价值十分广泛的热带野生植物,本文重点地介绍了我国对芦荟在食品和保健品方面的应用,并展望了我国芦荟今后研究、开发利用前景和方向。     

Science Letters:Volatile constituents in the flowers of Elsholtzia argyi and their varia-tion:a possible utilization of plant resources after phytoremediation

Phytoremediation effectiveness and remediation costs are driving factors of this project. Full utilization of plant resources after their being used for phytoremediation is an unsolved problem. GC/MS technique was used to investigate the volatiles of the flowers from Elsholtzia argyi (PFE1: Purple Flower Elsholtzia) and their variation     

关于量子力学中算符的几点注记

给出了构成量子力学中厄密算符的一般规则以及广义坐标及其共轭动量下的对易关系,同时,对非厄密算符也作了说明．     

Fertilization in flowering plants

Fertilization in flowering plants appears simple when compared to that in higher animals. In reality all pre-fertilization events involved in screening and selection of the partners, so familiar in animals, take place in a subtle way in flowering plants also. As plants lack mobility, they cannot perform, on their own, the most important and primary requirement of bringing the male (pollen grain) and the female (pistil) partners together. This process, termed pollination, is effectively outsourced largely to animal agents. Both plants and animals have evolved fascinating adaptations to do this, which is vital not only for their sustenance but also for crop productivity.     

谈缺铁胁迫下植物的适应性反应

铁是植物体必需的营养元素，在缺铁情况下植物会表现出多种症状。但某些植物在缺铁情况下表现出一定的适应性。本文谈了植物对铁的吸收、运输及植物对缺铁的适应性反应机理。