心材

本研究对楸木心材提取物进行分离和生物毒性试验，结果表明主要的有效抗菌活性成分是新物质N和S。

This study conducts separation and biological toxic test for extractive substance of heartwood of Catalpa bungei . Results show that major effective antifungal component are now compounds N and S.

子宫内安放的避孕环（缩写为IUD）心材的体积收缩率、边交界材的皱缩因子和皱缩深度变化最大。

The greatest variation takes place in the volume contractive rate of the heartwood , collapse factor and collapse depth of the sapwood .

与正常材相比，湿心材的pH和酸缓冲容量高，抽提物和灰分含量较高，综纤维素和α-纤维素含量略低。

Comparing with the normal wood , the pH and acid buffering capacity , the content of extractives and ash are all higher , but the content of holo-cellulose and a-cellulose are a little lower .

从形成层到心材，SFD最初有所增加，随后持续减小，但由于树木年龄很小，最大的SFD只比最小的SFD大0.33～0.36倍。

However , because the trees were very young , the maximum SFD was only 0.33-0.36 times more than the minimum .

用明胶+蔗糖、明胶+桃胶+蔗糖、桃胶+蔗糖作为壁材，VA作模型心材，用喷雾干燥法制备微胶囊；

In this research , microcapsules were spray-dried , gelatin + sucrose , gelatin + peach gum + sucrose , and peach gum + sucrose were used as wall material and vitamin A was used as the model core respectively .

施肥处理提高了I-69杨边材和心材的纤维素含量，降低了其木素含量和边材1%NaOH抽提物含量，而对苯醇抽提物影响轻微；

The cellulose contents of both sapwood and heartwood were raised after fertilization , however , lignin content and 1 % NaOH extractives in sapwood were reduced .

结果表明：心材与壁材的最佳比例为12：88，最佳研磨时间30min，最适超声波时间为30min。

The results showed that the optimum ratio of heartwood to wall material was 12:88 , the optimum abrasive time was 30 min , and the best supersonic wave time was 30 min.

心材与壁材的适宜比例为12∶1；高压均质可有效地提高天然维生素E的微胶囊化效率和微胶囊化产率，其最佳均质压力为30MPa～40MPa；

The suitable proportion of core material and wall material was 1.2 ∶ 1 And high pressure homogenization can effectively increase the MEE and MEY , its suitable homogenizing pressure was 30 MPa ~ 40 MPa .

实验结果表明，在包埋温度70℃、心材比2ml·g-1、包埋时间6h条件下，水杨酸甲酯包埋率可以达到48.58%。

The results showed that the yield of encapsulated MS could reach 48.58 % under the conditions of encapsulating temperature of 70 ℃, MS to yeast ratio of 2 ml · g - 1 and encapsulating time of 6 h.

结果：经风害损伤的檀香心材挥发油含量为1.42%，其油中各化学成分含量及各提取部位薄层行为均与自然生长25a植株及对照药材相似。

Results : The content of volatile oil from heartwood of Wind damaged Lignum Santali Albi is 1.42 % ; the content of various components in the oil and the chromatography of different extracts are similar to those of reference drug and 25 years old trees .

边材微黄色，心材坚硬而且沉重。

The sapwood is yellowish with a hard and heavy heartwood .

抽提和压缩处理对杉木心材吸水吸湿性的影响

Effect of Extraction and Compression on Hygroscopicity of Chinese Fir Heartwood

美国南部小型树种，深红色心材。

Small tree of southern United States having dark red heartwood .

东北白桦的‘水心材’

' water heartwood ' of white birch in the north-east China

边材上染率明显高于心材。

Up-take of sapwood was obviously higher than that of heartwood .

北京地区李属树木上一种新的心材腐朽病原菌

A New Pathogen of Heart Rot Disease on Prunus from Beijing

我国主要树种的木材（心材）天然耐腐性试验

Tests on natural decay resistance of the important timber in China

落叶松心材多酚类抽提物特性初步研究

A preliminary study on the characteristics of Larch heartwood polyphenols

侧柏心材活性成分的提取及其抑菌性能

The Effective Components Extraction and Antifungal Test for the Heartwood of Platycladus orientalis

强耐腐性树种心材提取物对木材防腐作用的研究

Inhibitory Effects of Heartwood Extracts from Strong Decay-resistant Tree Species on Wood Preservation

柚木黑色条纹心材的颜色和化学特性（英文）

Color and chemical characterization of partially black-streaked heartwood in teak ( Tectona grandis )

兴安落叶松边材心材生长特征的种源效应

Effects of Provenances on Growth Characteristics of Sapwood and Heartwood of Larix gmelinii Trees

毛果冷杉湿心材的闭塞纹孔及细菌对木材结构的降解

Aspirated Pits in Wetwood and Micromorphology of Microbial Degradation of Sub - alpine Fir

目的：研究东北红豆杉心材的化学成分。

Objective : To study the chemical constituents in the heartwood of Taxus cuspidata .

结论秦艽龙胆苦苷主要集中在根心材部分。

Conclusion Gentiopicrin are chiefly concentrated on the parts of the heart - wooded .

买家俱的时候，一定要分辨边材和心材。

One must be able to differentiate between cambium and heartwood when buying furniture .

国外对杨树湿心材的研究

Foreign Studies on wet heart wood of poplars

该批材料是我省优良的红心材资源，来之不易。应及时做好该批资源的保存、研究和利用工作。

Protection , studies and utilization should be done in time to these resources .

同种原料中，边材金属离子含量一般高于心材；

The contents of metal ions in sapwood are higher than those in heart wood .

国外对湿心材的研究于上世纪初即已开始，已取得许多研究成果。

Many studies have been made abroad on wet heart wood since early last century .