相关实验视频

Updated: May 6, 2026

A Technique to Screen American Beech for Resistance to the Beech Scale Insect Cryptococcus fagisuga Lind.
12:47

A Technique to Screen American Beech for Resistance to the Beech Scale Insect Cryptococcus fagisuga Lind.

Published on: May 27, 2014

10.0K

来自美国的木和核桃树木的商品风险评估

, Antonio Vicent Civera, Paula Baptista

    EFSA journal. European Food Safety Authority
    |January 15, 2026
    PubMed
    概括

    一种新的真空蒸汽热处理方法有效地减轻了树和核桃树木中数千种癌症复杂害虫的风险. 然而,对于深度超过5厘米的害虫,如Arrhenodes minutus,它的有效性降低了.

    关键词:
    欧洲联盟 欧洲联盟朱格兰斯 (Juglans) 是一个古格兰斯.科尔库斯 (Quercus Quercus) 是一个植物.商品风险评估 商品风险评估植物健康问题 植物健康植物害虫害虫害虫害虫害害虫害虫害害害虫害虫害虫害害害虫害虫害害害虫害虫害虫害虫害虫害真空蒸汽处理

    更多相关视频

    Preparation and Testing of Plant Seed Meal-based Wood Adhesives08:09

    Preparation and Testing of Plant Seed Meal-based Wood Adhesives

    Published on: March 5, 2015

    9.1K
    Rapid Testing of Resistance of Timber to Biodegradation by Marine Wood-Boring Crustaceans14:06

    Rapid Testing of Resistance of Timber to Biodegradation by Marine Wood-Boring Crustaceans

    Published on: January 29, 2022

    4.2K

    相关概念视频

    Introduction to Wood01:19

    Introduction to Wood

    Wood, derived from trees, is a versatile and widely used construction material. Trees feature a trunk surrounded by a protective layer of dead bark. Beneath this outer layer lies the living bark, followed by the cambium, and then the sapwood which transitions into heartwood as it matures. At the center of the trunk is the pith. The age of a tree can be discerned by examining its growth rings, which are concentric bands visible in the trunk's cross-section.
    The structural integrity of the...
    1.1K
    Softwoods and Hardwoods01:28

    Softwoods and Hardwoods

    Softwoods and hardwoods, derived from different types of trees, are distinguished by their leaf structures and cellular compositions, each serving unique purposes in construction and manufacturing. Softwoods come from cone-bearing trees with needle-like leaves and are predominantly composed of longitudinal cells called tracheids and a smaller proportion of radial cells known as rays. Due to their cellular structure, softwoods are commonly used in construction for structural frames, sheathing,...
    866
    Structural Properties and Dimensions of Lumber01:21

    Structural Properties and Dimensions of Lumber

    Wood's structural properties derive from fibers aligned along the tree's length, contributing significantly to its mechanical strength. Wood exhibits up to twenty times greater tensile strength along these fibers compared to across them, and generally shows better performance under compression than tension. The length of fibers varies, with hardwoods having fibers around one twenty-fifth inch long and softwoods ranging from one-eighth to one-third inch.
    The strength characteristics of...
    580
    Lumber Defects01:23

    Lumber Defects

    Lumber defects, which can affect both the appearance and structural integrity of wood, include a variety of growth and manufacturing flaws. Growth defects such as knots and knotholes occur where branches were once attached to the tree trunk, with knotholes forming when these knots fall out. Other natural defects include decay and insect damage, which compromise the wood's strength and durability.
    Shakes are minor fractures that run along or across the wood's annual rings, while wane is...
    819
    Wood Products01:21

    Wood Products

    Wood products encompass a broad range of materials crafted from wood strands, veneers, lumber, and even waste wood-like shreds, designed for both structural and nonstructural purposes. Various specialized wood products have been developed to enhance strength, durability, and versatility in building applications.
    Glue-laminated wood, often referred to as glulam, combines multiple smaller pieces of dimensional lumber using adhesives to form a single, larger piece. Cross-laminated timber consists...
    428
    Survival Tree01:19

    Survival Tree

    Survival trees are a non-parametric method used in survival analysis to model the relationship between a set of covariates and the time until an event of interest occurs, often referred to as the "time-to-event" or "survival time." This method is particularly useful when dealing with censored data, where the event has not occurred for some individuals by the end of the study period, or when the exact time of the event is unknown.
     Building a Survival Tree
    Constructing a...
    514