伊春林区宣贯国家原木标准情况的调查分析

过去，由于领导质量意识差，质检人员素质低，制度不健全，使得山中楞造材质量问题严重，贮木场质量问题普遍存在，管理不适应，造成资源浪费，效益流失，产品滞销。因此建议：推行ISO9000认证；按市场需求组织生产；加大标准化执法力度；建立激励机制。     

代料花菇与段木花菇的品质分析与比较研究

测试了木屑代料和段木栽培花菇的可溶性蛋白组分、氨基酸、粗蛋白、粗脂肪、粗纤维、碳水化合物、微量元素、维生素和核酸含量。结果表明,可溶性蛋白在木屑花菇中的含量为6.09％,电泳图谱显示有11条谱带;在段木花菇中含量为5.75％,有10条谱带。氨基酸总量在木屑花菇中为18.56％,其中必需氨基酸占34.16％;而在段木花菇中二者分别为14.51％和32.59％。核酸含量在木屑花菇中为3.92％;在段木花菇中为3.61％。粗纤维在木屑花菇中的含量为13.13％;而在段木花菇中仅为7.82％。粗脂肪、碳水化合物的含量在木屑花菇中分别为1.12％和42.77％;在段木花菇中为4.53％和62.01％。维生素B_1、B_2、尼克酸、麦角甾醇及微量元素铁(Fe)、磷(P)、钙(Ca)、锌(Zn)等在木屑花菇中的含量也均高于段木花菇。     

运材汽车列车可靠性特征量的研究

应用可靠性理论，对运材汽车列车在使用中的可靠性特征量进行了研究，并根据林区常用的２种车型的运材汽车列车有关运行数据的统计分析，得出了支材汽车列车可靠性特征量的分布规律和特点，同时也对可靠性理论在运材汽车列车维修过程中的应用作了探讨。     

对贮木场挖潜增效的几点建议

本文针对鹤北林业局贮木场生产经营现状及存在的问题，提出了提高贮木场经济效益的具体措施是合理量材和造材、转变经营机制、降低生产成本。     

带式运输机过渡曲线的简化计算

本文运用几何方法,对带式运输机过渡曲线设计中经常遇到的曲率半径,以及曲率半径与水平段、倾斜段衔接的尺寸计算问题,进行了分析和研究,提出了一种能满足实际生产需要的简化计算方法。     

Design and application of Model DZ1 log grapple driven by an electric drum

This article introduces the history and development of log grapple in China. According to the special conditions of Chinese forest areas, we have selected log grapple driven by electric drum, and have analyzed and calculated its parameters theoretically. This is the first log grapple driven by an electric drum made successfully in China. The Model DZ1 log grapple has a large closing force, works safely and is suitable for the special forest working conditions in China.     

DESIGN AND APPLICATION OF MODEL DZI LOG GRAPPLE DRIVEN BY AN ELECTRIC DRUM

This article introduces the history and development of log grapple in China.Ac-cording to the special conditions of Chinese forest areas,we have selected log grapple driven byelectric drum,and have analyzed and calculated its parameters theoretically.This is the first loggrapple driven by an electric drum made successfully in China.The Model DZ1 log grapple has alarge closing force,works safely and is suitable for the special forest working conditions inChina.     

木屋圆木梁加工中心转塔式主轴结构设计与研究

通过对圆木梁加工形式的分析,确定加工中心转塔式主轴结构的总体布局方案,利用SolidWorks软件对木屋圆木梁加工中心进行三维建模。完成了矩形转塔、车外圆和铣横向榫槽主轴总成、钻孔主轴总成、铣纵向榫槽主轴总成、铣端部榫槽主轴总成、转动总成的结构设计及单位切削力、切削功率等主参数的设计计算。该设计使加工中心能够一次性进行车削、铣削、钻孔等形式的加工,大大提高了木屋圆木梁的加工精度和加工效率。     

福建三明格氏栲林物种多度分布格局研究

Species abundance distribution was regarded as an important measuring method of species diversity study inCastanopsis kawakamii forest. The log-series model was used to calculate, inspect and draw to illustrate the species abun-dance of 7 main communities by investigating species amounts of community composition types in C. kawakamii forest,which including ( C. kawakamii + Schima superba + Litsea mollifolia, (2 C. kawakamii + Daphniphyllum oldhamii +Schima superba, 3 C . kawakamii + Quercus glandulifera + Ilex purpurea , (4 C . kawakamii pure forest, (5 Pinus massoni-ana+ Schima superba + Elaeocarpus decipiens , ⑥ C . kawakamii + Pinus massoniana + Symplocos stellaris , (7 Castanopsiseyrei + C. kawakamii + Schima superba. The results showed that species abundance of arbor layer, shrub layer, all woodyspecies of 7 main communities in C. kawakamii forest all obey a logarithmic series distribution.     

弯曲原木材积测定的实用近似公式探讨

本文采用柱坐标,以椭圆—阿基米德螺线包络组成解析曲线椭圆柱体的弯曲原木的数学模型。定义它为C型弯曲。并以材长和弯曲弓背长度定义,提出了一个实测参数的弯曲原木材积计算公式。定量地解决了弯曲造成原木材积统计时的损失。这种方法和理论,可以解决弯曲原木最佳出材率和弯曲原条最佳截断问题。为制材的数控软件编制提供了理论基础。