图片来源:Cambridge International AS & A Level Chemistry 9701 syllabus for 2022, 2023 and 2024. Syllabus overview CIE考试局化学科目一共有五个Paper,Paper1、Paper2、Paper3是AS部分,学生必须同时报考3张试卷。Paper4、Paper5是A2部分,学生必须同时报考2张试卷...
至于Paper5,它是一种笔头实验题。第一种形式要求学生设计实验,详细描述相关仪器、测量方式、步骤、数据处理以及结果分析等;第二种形式要求学生处理数据并绘制图表,计算相关结果。 在这一部分,实验题目的注意事项颇多,考生需要小心谨慎,以免失分。 A-Level化学同A-Level数学、物理一样是所有大学理工科招生最重要的参考...
AS阶段考Paper 1、Paper 2、Paper 3这三张卷,A2阶段考Paper 4和Paper 5这两张试卷。 A-level化学难吗? 对于很多刚接触A-level学科的同学来说,化学是很有挑战性的一门科目,那它主要难在哪里呢? 1.A-level化学包括物理化学、无机化学、有机化学、分析四个部分。每一个部分都有自己的原理和公式,但有互相依...
Extraction of organic chemistry grammar from unsupervised learning of chemical reactions[github][paper] This package does atom mapping for chemistry using transformer networks. From the abstract:During the last few hundred years, chemists compiled the language of chemical synthesis inferring a series of ...
a pretrained protein language model named TAPE-BERT, (3) replacing 1D convolutional neural networks and gated linear units with a self-attention-based transformer encoder, and (4) introducing a new atom vector into the atom sequence that carries the interaction information at the molecular level. ...
Accurately predicting protein–ligand interactions is crucial for understanding cellular processes. We introduce SurfDock, a deep-learning method that addresses this challenge by integrating protein sequence, three-dimensional structural graphs and surfa
欧洲、中东和北非以及美国学校的学生将有机会优先参加线上考试,涉及到AS English General Paper和IGCSE Accounting, Economics, Biology, Chemistry以及Physics六个科目。 CIE考试局官网 另一边打算学习IB课程的同学: Tes在10月份的报道称,国际文凭组织 (IBO) 也计划于2026年夏季为其文凭课程试行数字考试,目标是到2030年...
For the remaining pairs of cells, the c-di-GMP level was estimated as the mean fluorescence intensity in the GFP/FITC channel. We then grouped sister cells into two classes: a c-di-GMP-high and a c-di-GMP-low class based on the average c-di-GMP level over the full lifetime of ...
[*]for polyethylene). The raw PSMILES syntax is non-unique; i.e., the same polymer may be represented using many PSMILES strings; canonicalization is a scheme to reduce the different PSMILES strings of the same polymer to a singel unique canonicalized PSMILES string. polyBERT requires ...
The synthesis of dimethyl carbonate (DMC)/diethyl carbonate (DEC) from CO2, epoxide and methanol/ethanol by “one-step method” is an important application of “green chemistry”. In order to further improve the catalytic effect of ILs, modification strategies were proposed in this review. For ...