说花

说花□郑道和无论是在繁华的城市，还是在偏远的乡村，人们都能看见花，这是大自然赐给人类的本色美。花的世界赏心悦目，多姿多彩，栽培的，野生的，名贵的，普通的，芳香扑鼻的，鲜艳夺目的，大的，小的，红的，白的……各式各样的花朵，把世界妆扮得如此美丽，给我们的...     

思念

灰色的天空一张欲坠的网晶莹的露珠是云霓的童话美丽的羽毛是蓝天的梦想蜂窝状的城市寻不到鸟声甚至没有一棵小树高耸的天线塔和层叠的脚手架是城市撑开的大手婉啭的鸣唱已锈去黑洞洞的烟囱一把把吞嚼气流中逃散的氧分子从夜晚到早晨城市里的人觉得很累太阳是城市一饼灰黄的蛋糕月亮是城市一只朦胧的睡眼城市的窗前没有蝴蝶城市的阳台只有塑料花微风在尘埃中喘息流水于污浊里洇泣人造的假山没有栖居的绿枝幽暗的沼池难留翩然的鸟影天籁之音被从家园逐出绿树青山已浑然成梦在一个不见落叶的秋天我躺在城市的一隅梦见故乡门前的沙枣树上高高低…     

老师 我们心中永不落的太阳

走过播种的春天,踏着成长的夏天,我们迎来了收获的季节——灿烂的金秋!沉甸甸的种子,经过勤奋者春天的播种、夏天的耕耘,在秋天来临的时候,变成了金灿灿的果实,展示了劳动者的智慧和心血。秋的甘甜,秋的色彩,秋的芬芳,像亮亮的雨丝,洒在收获者的心上。走进果园,百果飘香,到处洋溢着收获的喜悦。红     

河北漳河林场洋槐林地位级曲线

地位级是反映一定树种的立地条件的好坏和林分生产力的指标。地位级的优劣是以一定年龄的林分的平均树高的差异划分的,这种划分方法主要应用于树种单纯的同龄林。在森林经营工作中,对于立地条件的调查以及地位级的划分具有十分重要的意义,因为只有对森林生长的立地质量有一个清楚的了解,才有可能采取一定的营林措施改善立地条件,提高林分     

营林工作者的梦

绿的山,绿的松,绿的小草,绿的风,一切都会走进营林工作者绿色的梦!绿的泉,绿的影,绿的树木,绿的岭,一切都会走进营林工作者绿色的梦…… 他们绿色的梦啊,是希望的梦,希望青山秀水,花艳树俊,色彩缤纷,郁郁葱葱!人们的脸上,都有喜悦的表情,清新的空气回荡在城市乡村……     

林区里那盏盏灯

海岸上灯火通明,那是忙碌的象征;都市里灯红酒绿,那是繁华的见证。有灯的地方往往有人,有人的地方是否有灯?平淡的日子里也有不凡啊,那为绿而时刻痴狂的心,那爱岗敬业忠诚的情,谁说林区里缺少明灯犀利的目光,像明查秋毫的灯,黑恶的手再不敢轻举妄动;闪亮的警徽,是满载荣誉的灯,时刻憧憬奉献的梦;肩上的银星,是担负责任的灯,维护着林区的和谐安宁。攀登陡峭的山峰,额头的汗水化作了奋进的灯;困苦时谁都会流泪,晶莹的泪水化作了坚强的灯;经历了沧桑岁月,留下的脚印是耕耘的灯……看啊平淡中他们点亮了心灯,举着它,奔向充满希望的征程林区里那…     

生活的浪花

运动生命的马达懒惰肥胖的温床卫生健康的卫士肮脏病魔的基地欢乐长寿的妙药忧愁衰老的快车烟酒自杀的凶手生活的浪花@张世和     

红色七月

红色的七月,用随风飘荡的红旗,盛装天地间一片神奇的土地;红色的七月,用热情似火的激情,高唱世纪里一首不朽的赞歌;红色的七月用血与火锻造的铁锤镰刀,铸就了中华民族坚挺的脊梁;红色的七月,用亘古未有的荣光,谱写了一曲东方神话的交响;红色的七月,用举世赞叹的成就,凝聚了一卷     

大雁河我无言的诉说

把童稚的梦幻与歌谣留在了山沟把海的向往与追求搁浅在昨夜的林间一年一年,岭上的花开了又谢一次一次,我心中的潮汐去了再来一如你日夜低吟浅唱的浪漫亲近着我铺遍花朵的心情弯曲出我深深的乡愁摇曳着我漂泊的目光童年的我只要在你身旁看到黄昏木屋上的炊烟轻轻上升内心里就会感到无限的温暖即使做了一件又一件让大人困惑的傻事疲劳也会被巨大的幸福完全淹没潮湃的涛音让我荡气回肠滚烫的热泪一回回漫过我的梦乡有多少可歌可泣的故事因你潮涨让大无畏的英雄气概放射光芒播下情洒下爱的家园更加富强激情燃烧的森林里涓涓细流汇入历史的汪洋我…     

自然的另一个面孔

关于大自然,每个人的脑海都会有一幅幅美丽的画面——空气清新的郊野,波光粼粼的湖泊,微风拂煦的草原,参参郁郁的森林,连绵起伏的山峦,一望无际的大海,浪花抚岸的海滨……并且这些画面的背后,还有一个重要的背景——风和日丽。我们的脑海里之所以会有这些美妙的画面或记忆,是因     

山杏叶桦木酸、齐墩果酸和熊果酸的研究

我国山杏资源十分丰富,是绿化荒山的优良树种。采用HydersirBDSC18色谱柱（150×4．6mm,5μm）,流动相体积比为90：10的0．3‰硫酸甲醇溶液一3‰硫酸水溶液,检测波长210nm,建立了山杏叶中三萜酸测定的高效液相色谱法。结果表明：桦木酸、齐墩果酸与熊果酸的浓度在30～2000μg／mL（r桦=0．9971,r齐=0．9986,r熊=0．9978）范围内与色谱峰面积呈良好线性关系;平均加标回收率分别为99．9％、101．1％和98．9％。以山杏叶为材料,采用高效液相色谱法和紫外可见分光光度法分别对山杏叶中的三萜酸成分进行分析,结果表明,山杏叶富含三萜酸,落叶期山杏叶中总三萜酸（17078#g／g）、桦木酸（1842μg／g）、齐墩果酸（2536μg／g）和熊果酸（5706μg／g）含量均高于非落叶期。本研究首次建立了山杏叶中桦木酸、齐墩果酸和熊果酸同时测定的反向高效液相色谱法（HPLC）,发现落叶期山杏叶富含三萜酸,为山杏叶综合开发利用提供了基础数据。     

酸碱处理对制备再生桉木颗粒板的影响

废弃人造板中的胶黏剂影响人造板的回收利用。笔者利用化学法对废弃桉木颗粒板中的胶黏剂进行处理,分别探究不同浓度的硫酸、甲酸、硝酸、氢氧化钾分解废弃木颗粒板中脲醛树脂的最佳条件。结果表明,在90℃,水浴处理2 h条件下,甲酸浓度大于60%,硫酸浓度大于25%,或硝酸浓度大于25%可完全分解固化后的脲醛胶黏剂;对酸处理后的木颗粒的颜色、形貌、化学性质进行分析,甲酸对木颗粒的形态、颜色影响较小。用酸处理后制得的再生木颗粒板,力学性能相对于未经处理的再生木颗粒板得到显著提高。     

Polyelectrolyte titration of whisky

Polyelectrolyte titration using a fluorescent indicator was applied to determine the electrolytic charges in 10 whiskies at various pH levels. Tannic acid was also titrated to compare the relation between pH and charge because the polyelectrolytes in whisky were postulated to be polyphenols, mainly tannic acid, which are gradually extracted from a wood cask over the years. Below pH 7, the pH-charge curves for whisky were analogous to those for tannic acid, indicating that carboxyl groups in tannic acid were fairly stable on maturation of the whisky. The charge of the tannic acid increased with increasing pH, whereas that of whisky had a tendency to level off. The degree of leveling off was higher for whiskies with longer maturation. These phenomena are believed to be due to the oxidation of pyrogallol and catechol moieties in tannic acid, which occurs during storage of the whisky. There was a clear tendency for the whiskies with higher prices to have higher charges, that is, a higher tannic acid content.     

红色康乃馨干燥保色方法研究

以红色康乃馨为材料,采用不同的有机酸、Mg2＋及蔗糖的浓度梯度设置对红色康乃馨花瓣进行处理,经过干燥、破坏性试验后比较、选择确定出最佳干燥花保色方法。实验结果表明,有机酸对红色康乃馨干燥花保色效果较为显著,其中保色效果较好的酸的先后顺序为：酒石酸〉柠檬酸〉苹果酸,并筛选出保色效果较好的处理方法为：7.5%酒石酸浸泡处理15h;10%酒石酸处理10h或15h。金属离子Mg2＋与蔗糖处理对红色康乃馨干燥花保色无显著效果。     

纳米镍催化树脂酸歧化反应的研究（Ⅰ）——树脂酸组成的研究

将纳米镍催化剂首次应用于树脂酸的歧化反应中。在溶剂存在条件下，进行松香的歧化反应，对不同催化剂催化下的歧化松香组成尤其是酸性部分的组成进行了分析。将DEAE—Sephadax子交换色谱法应用于歧化松香酸性物与中性物的分离。对纳米镍催化松香歧化过程中树脂酸的组成进行了跟踪分析。     

漆酶/介体体系降解单一纸浆树脂模拟物的研究

以松香酸、亚油酸、油酸、β-谷甾醇、甾醇油酸酯分别作为纸浆中单一树脂的模拟物,采用一种产自黄孢原毛平革菌的漆酶对树脂模拟物进行降解,通过对比漆酶/介体体系的降解效率,筛选了该漆酶合适的介体,探讨了漆酶/介体体系对单一树脂模拟物的降解效果,研究了漆酶/介体体系降解亚油酸和油酸的动力学,并对漆酶降解亚油酸的工艺条件进行了优化。研究结果表明:1-羟基苯并三唑(HBT)是较为合适的介体;漆酶/HBT体系对松香酸、亚油酸、油酸、β-谷甾醇、甾醇油酸酯单一树脂模拟物均有较好的降解效果;漆酶/HBT体系处理亚油酸、油酸的米氏常数分别为1.38和1.86mmol/L,表明亚油酸更易与漆酶/HBT体系结合;该漆酶处理亚油酸的最佳工艺条件为酶用量2.0U/mg、1-羟基苯并三唑介体用量7.6mol/g、时间60min、温度50℃、pH值4.0,此条件下亚油酸的降解率为88.9%,当酶用量增加到4.0U/mg或者处理时间延长至120min时,亚油酸的降解率可达到100%。     

Caffeic and chlorogenic acids in Ilex paraguariensis extracts are the main inhibitors of AGE generation by methylglyoxal in model proteins

The present study concentrates on the evaluation of the anti-glycation effect of some bioactive substances present in yerba maté (Ilex paraguariensis): 5-caffeoylquinic acid, caffeic acid and a sapogenin (oleanolic acid). Bovine serum albumin and histones were incubated in the presence of methylglyoxal with or without the addition of 5-caffeoylquinic acid, caffeic acid and oleanolic acid. After the incubation period, advanced glycation end product (AGE) fluorescence spectra were performed and protein structural changes were evaluated by Sodium Dodecyl Sulfate Polyacrylamide Gel Electrophoresis. Chlorogenic acid, caffeic acid are the main substances responsible for the anti-glycation effect of maté tea.     

Silicic acid: boric acid complexes as wood preservatives

Wood was treated with a low molecular-weight silicic acid: boric acid agent and examined for increased resistance to termites and combustion. Wood treated with silicic acid only exhibited increased termite resistance, but not to the marked extent observed after treatment with a mixture of silicic and boric acids. Increasing the quantity of boric acid also increased the termite mortality rate and shortened the time to death. Oral-toxicity tests using dyed silicic acid: boric acid suggested that the boric acid in the agent acted as a stomach poison. Field tests on stakes over three years showed that even if stakes were placed near the termite exit, those treated with silicic acid and high levels of boric acid had no attack by termites and maintained their original form. Though these specimens were installed in the field during three rainy seasons (about six months in total) in three years, the termite resistance ability of these chemicals was maintained. It became clear that this silicic acid: boric acid agent has a high water resistance ability worthy of application in the outdoors. Combustion tests showed that flame and glowing combustion times were shortened at high levels of boric acid. When a boric acid: methanol solution was added at of rate of not less than 25 ml for 100 g of colloidal silicic acid solution (CSAS), flaming and glowing combustion were not observed. Although the charring length of the wood specimen which was treated with a low molecular weight silicic acid: boric acid agent decreased to 2/3 of that of the control wood, the charring lengths were not influenced by the level of boric acid. However, the volume of smoke decreased relative to the amount of boric acid that had been added.     

云南高原山地油茶籽油脂肪酸组成及品质分析

为了解云南高原山地油茶籽油品质及其脂肪酸组成和含量,以云南高原山地主产区初选的37株油茶优树为研究对象,检测分析37株油茶优树的油茶籽油。结果表明:云南高原山地油茶籽油平均含油率为46.87%,油脂主要由油酸、亚油酸、棕榈酸、硬脂酸、亚麻酸等脂肪酸组成,其中不饱和脂肪酸含量占90%左右,油酸含量72.52%~84.78%、亚油酸含量4.85%~13.74%、亚麻酸含量0.45%~1.30%;饱和脂肪酸含量占10%左右,棕榈酸含量6.44%~10.99%、硬脂酸含量1.09%~2.98%。同时,与其他省区的油茶籽油、市场上销售的主要植物食用油进行对比分析,发现云南油茶籽油脂肪酸组成及其比例优于其他油脂,是一款优质的木本食用油。最后采用模糊综合评判法,对初选37株优树的油脂品质进行综合评比,富宁17号综合品质最佳,其余依次为富宁11号、富宁2号、富宁3号、广南9号等。