IMMC 2023比赛时间已定，IMMC建模同步辅导课程火热报名中！
数学建模，就是根据实际问题来建立数学模型，对数学模型来进行求解，然后根据结果去解决实际问题。数学建模是一种数学的思考方法，是运用数学的语言和方法，通过抽象、简化建立能近似刻画并解决际问题的一种强有...
Edexcel A (SNAB) A Level Biology:复习笔记5.1.1 Ecosystems: Key Terms
Ecosystems: Key Terms Habitat Species are adapted, or well-suited, to life in a particular habitat A habitat can be defined as the place where an organism lives A habitat can be large, e.g. a deser...
Edexcel A (SNAB) A Level Biology:复习笔记4.2.10 Sustainability & Plant Materials
Sustainability & Plant Materials Sustainability refers to the using resources in such a way that the requirements of the current generation are met without depleting these resources for future ...
Edexcel A (SNAB) A Level Biology:复习笔记4.2.9 Antimicrobial Properties of Plants
Conditions Required for Bacterial Growth Bacteria are microscopic prokaryotes (meaning their cells do not contain a nucleus or membrane-bound organelles) They are often used in studies to test anti...
Edexcel A (SNAB) A Level Biology:复习笔记4.2.8 Development of Drug Testing
Development of Drug Testing Whenever new drugs are developed, they first need to be tested for effectiveness and side-effects, before they can be sold to the general public These are known as clini...
Edexcel A (SNAB) A Level Biology:复习笔记4.2.7 Practical: Determining the Tensile Strength of Plant Fibres
Practical: Determinig the Tensile Strength of Plant Fibres The tensile strength of a fibre refers to the maximum load it can carry before breaking For example, this information would be important w...
Edexcel A (SNAB) A Level Biology:复习笔记4.2.6 Practical: Identifying Tissue Types Within Stems
Practical: Identifying Tissue Types Within Stems In order to identify tissue types within stems, a permanent pre-prepared slide could be used Alternatively, a section of a plant stem could be cut a...
Edexcel A (SNAB) A Level Biology:复习笔记4.2.5 Plant Fibres
Plant Fibres Sclerenchyma fibres and xylem vessels are made of long, hollow plant cells These cells are hollow due to the fact that their cell contents died (often due to the lignification of the c...
Edexcel A (SNAB) A Level Biology:复习笔记4.2.4 Starch & Cellulose: Structure & Function
Starch & Cellulose: Structure & Function Starch Starch is the storage polysaccharide of plants It is stored as granules in plastids (e.g. chloroplasts) and amyloplasts (small, membrane boun...
