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My notes to complete a B.Sc. in Textile Engineering at the University of Bangladesh.
https://github.com/itachi-re/butex-notes

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My notes to complete a B.Sc. in Textile Engineering at the University of Bangladesh.

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# 📚 BUTEX University Notes



![Last Commit](https://img.shields.io/github/last-commit/itachi-re/butex-notes?style=flat-square&color=blue)

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![Markdown](https://img.shields.io/badge/Made%20with-Markdown-1f425f.svg?style=flat-square)

[![Changelog](https://img.shields.io/badge/Changelog-view-blueviolet?style=flat-square)](https://github.com/itachi-re/butex-notes/blob/master/CHANGELOG.md)



> **Personal study notes for B.Sc. in Textile Engineering (Fabric Engineering Department)**  

> Maintained by **itachi_re** | Bangladesh University of Textiles (BUTEX)



---



## 📖 About This Repository



This repository contains comprehensive course notes from my journey through the **Fabric Engineering Department** at BUTEX. The notes are written in Markdown with LaTeX support for mathematical expressions, making them easy to version control, share, and export to various formats.



### 🎯 Key Features



- 📝 **Structured Markdown Notes** - Clean, readable format with proper hierarchy

- 🧮 **LaTeX Math Support** - Full equation and formula rendering

- 📊 **Version Controlled** - Track changes and improvements over time

- 📄 **PDF Export Ready** - Automated scripts to convert notes to PDF

- 🏷️ **Tagged & Organized** - Easy navigation with course codes and topics

- 🔍 **Searchable** - Quick find using Git search or GitHub search features

- 📋 **Changelog Tracked** - Every notable update logged in [CHANGELOG.md](CHANGELOG.md)



---



## 🗂️ Course Index



### 🔬 Core Sciences & Mathematics



| Course Code | Course Title | Status | Topics Covered | Quick Links |

| :--- | :--- | :---: | :--- | :--- |

| **[CHEM-101](https://github.com/itachi-re/butex-notes/tree/master/CHEM-101)** | Chemistry - I | 🟢 Active | Periodicity, Bonding, Acids/Bases, Equilibrium, Kinetics, Colloids, Photochemistry | [📑 Topics](#chemistry-101-topics) |

| **[PHY-101](https://github.com/itachi-re/butex-notes/tree/master/PHY-101)** | Physics - I | 🟢 Active | Elasticity, Fluid Mechanics, Interference of Light, Optics | [📑 Topics](#physics-101-topics) |

| **[MATH-101](https://github.com/itachi-re/butex-notes/tree/master/MATH-101)** | Mathematics - I | 🟢 Active | Differential Calculus, Integral Calculus, Linear Algebra | [📑 Topics](#math-101-topics) |

| **[HSS-101](https://github.com/itachi-re/butex-notes/tree/master/HSS-101)** | Humanities & Social Science | 🟢 Active | Communication, Letters, Presentations, Meetings, Group Project | [📑 Topics](#hss-101-topics) |



### 🧵 Yarn Engineering (Fabric Department Focus)



| Course Code | Course Title | Status | Topics Covered | Quick Links |

| :--- | :--- | :---: | :--- | :--- |

| **[YE-101](https://github.com/itachi-re/butex-notes/tree/master/YE-101)** | Natural Textile Fibres | 🟢 Active | Flax, Jute, Cotton, Silk, Wool — Full Modules | [📑 Topics](#ye-101-topics) |

| **[YE-201](https://github.com/itachi-re/butex-notes/tree/master/YE-201)** | Fibre & Yarn Testing | 🟡 In Progress | Moisture Regain, Sampling Methods, Quality Control | - |



### 🔩 Practical & Lab Work



| Course Code | Course Title | Status | Topics Covered | Quick Links |

| :--- | :--- | :---: | :--- | :--- |

| **[lab_reports](https://github.com/itachi-re/butex-notes/tree/master/lab_reports)** | Lab Reports (CHEM-102 / PHY-102) | 🟢 Active | Chemistry & Physics Lab Reports, Mechanical Labs | [📑 Topics](#lab-reports) |

| **[ME-102 Practical](https://github.com/itachi-re/butex-notes/tree/master/tmp/ME-102-Practical)** | Mechanical Engineering Practical | 🟡 In Progress | Boilers, Pumps, Engines, Refrigeration, Turbines | [📑 Topics](#me-102-practical) |



**Status Legend:**  

🟢 Active - Regularly updated | 🟡 In Progress - Being developed | ⚪ Pending - Not started



---



## 📚 Detailed Course Contents



### Chemistry 101 Topics



**[🔗 View All Chemistry Notes](https://github.com/itachi-re/butex-notes/tree/master/CHEM-101)**



📂 01 - Periodicity



- [Periodicity Notes](https://github.com/itachi-re/butex-notes/blob/master/CHEM-101/01_periodicity/periodicity.md)

- [Ionic Radii Questions](https://github.com/itachi-re/butex-notes/blob/master/CHEM-101/01_periodicity/ionic_radii_questions.md)

- [CT-01 Class Test](https://github.com/itachi-re/butex-notes/blob/master/CHEM-101/01_periodicity/CT-01.md)



📂 02 - Chemical Bonding



- [📖 Chemical Bonding README](https://github.com/itachi-re/butex-notes/blob/master/CHEM-101/02_chemical_bonding/chemical_bonding_README.md)

- [🎯 One-Shot Review](https://github.com/itachi-re/butex-notes/blob/master/CHEM-101/02_chemical_bonding/chemical_bonding_oneshot.md)

- [Introduction to Chemical Bonding](https://github.com/itachi-re/butex-notes/blob/master/CHEM-101/02_chemical_bonding/intro_chemical_bonding.md)

- [Ionic Bonding](https://github.com/itachi-re/butex-notes/blob/master/CHEM-101/02_chemical_bonding/ionic_bonding.md)

- [Iron Oxidation States](https://github.com/itachi-re/butex-notes/blob/master/CHEM-101/02_chemical_bonding/iron_oxidation_states.md)

- [Metallic Bond Theory](https://github.com/itachi-re/butex-notes/blob/master/CHEM-101/02_chemical_bonding/metallic_bond_theory.md)

- [Metallic Properties](https://github.com/itachi-re/butex-notes/blob/master/CHEM-101/02_chemical_bonding/metallic_properties.md)

- [Metallic Examples](https://github.com/itachi-re/butex-notes/blob/master/CHEM-101/02_chemical_bonding/metallic_examples.md)

- [Valence Bond Theory (VBT)](https://github.com/itachi-re/butex-notes/blob/master/CHEM-101/02_chemical_bonding/vbt_fundamentals.md)

- [VSEPR Principles](https://github.com/itachi-re/butex-notes/blob/master/CHEM-101/02_chemical_bonding/vsepr_principles.md)

- [VSEPR Molecular Geometry](https://github.com/itachi-re/butex-notes/blob/master/CHEM-101/02_chemical_bonding/vsepr_mol_geometry.md)

- [Molecular Orbital Theory](https://github.com/itachi-re/butex-notes/blob/master/CHEM-101/02_chemical_bonding/molecular_orbital_theory.md)

- [IMF and Advanced Topics](https://github.com/itachi-re/butex-notes/blob/master/CHEM-101/02_chemical_bonding/imf_and_advanced.md)

- [📝 CT-02 Class Test](https://github.com/itachi-re/butex-notes/blob/master/CHEM-101/02_chemical_bonding/z_CT-02.md)

- [💡 CT Suggestions](https://github.com/itachi-re/butex-notes/blob/master/CHEM-101/02_chemical_bonding/z_CT_Suggestions.md)



📂 03-10 - Additional Chemistry Topics



- [03 - Complex Compounds](https://github.com/itachi-re/butex-notes/blob/master/CHEM-101/03_complex_compounds.md)

- [04 - Acids & Bases](https://github.com/itachi-re/butex-notes/blob/master/CHEM-101/04_acids_bases.md)

- [05 - Analytical Methods](https://github.com/itachi-re/butex-notes/blob/master/CHEM-101/05_analytical_methods.md)

- [06 - Physical Chemistry (Dilute Solutions)](https://github.com/itachi-re/butex-notes/tree/master/CHEM-101/06_physical_chemistry)

- [07 - Equilibrium](https://github.com/itachi-re/butex-notes/blob/master/CHEM-101/07_equilibrium.md)

- [08 - Kinetics](https://github.com/itachi-re/butex-notes/blob/master/CHEM-101/08_kinetics.md)

- [09 - Colloids](https://github.com/itachi-re/butex-notes/blob/master/CHEM-101/09_colloids.md)

- [10 - Photochemistry](https://github.com/itachi-re/butex-notes/tree/master/CHEM-101/10_photochemistry)

  - [Laws of Photochemistry](https://github.com/itachi-re/butex-notes/blob/master/CHEM-101/10_photochemistry/10_laws_photochemistry.md)

  - [Quantum Yield](https://github.com/itachi-re/butex-notes/blob/master/CHEM-101/10_photochemistry/11_quantum_yield.md)

  - [HX Decomposition](https://github.com/itachi-re/butex-notes/blob/master/CHEM-101/10_photochemistry/12_hx_decomposition.md)

  - [Photosensitized Reactions](https://github.com/itachi-re/butex-notes/blob/master/CHEM-101/10_photochemistry/13_photosensitized_reactions.md)



📂 Q&A / Class Tests



- [01 - Periodicity Q&A](https://github.com/itachi-re/butex-notes/blob/master/CHEM-101/qna/01_Periodicity_of_Elements.md)

- [02 - Chemical Bonding Q&A](https://github.com/itachi-re/butex-notes/blob/master/CHEM-101/qna/02_Chemical_Bonding.md)

- [03 - Complex Compounds Q&A](https://github.com/itachi-re/butex-notes/blob/master/CHEM-101/qna/03_Complex_Compounds.md)

- [04 - Acid and Base Q&A](https://github.com/itachi-re/butex-notes/blob/master/CHEM-101/qna/04_Acid_and_Base.md)

- [05 - Colligative Properties Q&A](https://github.com/itachi-re/butex-notes/blob/master/CHEM-101/qna/05_Colligative_Properties.md)

- [Class Test 02 - 2024](https://github.com/itachi-re/butex-notes/blob/master/CHEM-101/qna/chem_classtest_02_2024.md)

- [Class Test 02 - 2024-25](https://github.com/itachi-re/butex-notes/blob/master/CHEM-101/qna/chem_classtest_02_2024_25.md)

- [Class Test 02 - 2026 Suggestions](https://github.com/itachi-re/butex-notes/blob/master/CHEM-101/qna/chem_classtest_02_2026_sugg.md)



---



### Physics 101 Topics



**[🔗 View All Physics Notes](https://github.com/itachi-re/butex-notes/tree/master/PHY-101)**



📂 01 - Elasticity



- [Elasticity Fundamentals](https://github.com/itachi-re/butex-notes/blob/master/PHY-101/01_elasticity/elasticity.md)

- [Elasticity Guide](https://github.com/itachi-re/butex-notes/blob/master/PHY-101/01_elasticity/elasticity-guide.md)



📂 02 - Fluid Mechanics



- [📖 Fluid Overview](https://github.com/itachi-re/butex-notes/blob/master/PHY-101/02_fluid_mechanics/fluid_overview.md)

- [Fluid Properties](https://github.com/itachi-re/butex-notes/blob/master/PHY-101/02_fluid_mechanics/fluid_properties.md)

- [Steady & Unsteady Motion](https://github.com/itachi-re/butex-notes/blob/master/PHY-101/02_fluid_mechanics/steady-unsteady-motion.md)

- [Streamline & Turbulent Flow](https://github.com/itachi-re/butex-notes/blob/master/PHY-101/02_fluid_mechanics/streamline-turbulent.md)

- [Uniform Motion](https://github.com/itachi-re/butex-notes/blob/master/PHY-101/02_fluid_mechanics/uniform_motion.md)

- [Non-Uniform Motion](https://github.com/itachi-re/butex-notes/blob/master/PHY-101/02_fluid_mechanics/non-uniform-motion.md)

- [Continuity Equation](https://github.com/itachi-re/butex-notes/blob/master/PHY-101/02_fluid_mechanics/continuity_equation.md)

- [Bernoulli's Equation](https://github.com/itachi-re/butex-notes/blob/master/PHY-101/02_fluid_mechanics/bernoulli_equation.md)

- [Rate of Flow](https://github.com/itachi-re/butex-notes/blob/master/PHY-101/02_fluid_mechanics/rate_of_flow.md)

- [Torricelli's Theorem](https://github.com/itachi-re/butex-notes/blob/master/PHY-101/02_fluid_mechanics/torricelli_theorem.md)

- [Venturimeter Guide](https://github.com/itachi-re/butex-notes/blob/master/PHY-101/02_fluid_mechanics/venturimeter_guide.md)



📂 03 - Interference of Light



- [📖 Interference & Optics Notes](https://github.com/itachi-re/butex-notes/blob/master/PHY-101/03_interference_of_light/Interference_Optics_Notes.md)

- [01 - Wavefront & Huygens' Principle](https://github.com/itachi-re/butex-notes/blob/master/PHY-101/03_interference_of_light/01_wavefront_huygens.md)

- [02 - Reflection & Refraction](https://github.com/itachi-re/butex-notes/blob/master/PHY-101/03_interference_of_light/02_reflection_refraction.md)

- [03 - Interference](https://github.com/itachi-re/butex-notes/blob/master/PHY-101/03_interference_of_light/03_interference.md)

- [04 - Young's Double Slit Experiment](https://github.com/itachi-re/butex-notes/blob/master/PHY-101/03_interference_of_light/04_youngs_experiment.md)

- [05 - Fresnel Biprism](https://github.com/itachi-re/butex-notes/blob/master/PHY-101/03_interference_of_light/05_fresnel_biprism.md)

- [06 - Newton's Rings](https://github.com/itachi-re/butex-notes/blob/master/PHY-101/03_interference_of_light/06_newtons_rings.md)

- [07 - Thin Films](https://github.com/itachi-re/butex-notes/blob/master/PHY-101/03_interference_of_light/07_thin_films.md)

- [📝 CT Q2 2026](https://github.com/itachi-re/butex-notes/blob/master/PHY-101/03_interference_of_light/ct_q2_2026.md)



📂 Q&A / Class Tests



- [Class Test 02 - 2024](https://github.com/itachi-re/butex-notes/blob/master/PHY-101/qna/class_test_02_2024.md)

- [Questions 2017–2023](https://github.com/itachi-re/butex-notes/blob/master/PHY-101/qna/ques_2017~23.md)

- [Questions & Solutions 2012–2018](https://github.com/itachi-re/butex-notes/blob/master/PHY-101/qna/questions_n_sols_2012_18.md)



---



### MATH-101 Topics



**[🔗 View All Mathematics Notes](https://github.com/itachi-re/butex-notes/tree/master/MATH-101)**



📂 Differential Calculus



- [01 - Functions, Domain & Range](https://github.com/itachi-re/butex-notes/blob/master/MATH-101/differential_calculus/01_functions_domain_range.md)

- [02 - Limit & Continuity](https://github.com/itachi-re/butex-notes/blob/master/MATH-101/differential_calculus/02_limit_and_continuity.md)

- [03 - Differentiability & Derivatives](https://github.com/itachi-re/butex-notes/blob/master/MATH-101/differential_calculus/03_differentiability_and_derivatives.md)

- [04 - Tangent & Normal](https://github.com/itachi-re/butex-notes/blob/master/MATH-101/differential_calculus/04_tangent_and_normal.md)

- [05 - Rolle's & Mean Value Theorem](https://github.com/itachi-re/butex-notes/blob/master/MATH-101/differential_calculus/05_rolles_and_mean_value_theorem.md)

- [06 - Taylor & Maclaurin Series](https://github.com/itachi-re/butex-notes/blob/master/MATH-101/differential_calculus/06_taylor_and_maclaurin_series.md)

- [07 - L'Hôpital & Indeterminate Forms](https://github.com/itachi-re/butex-notes/blob/master/MATH-101/differential_calculus/07_lhopital_indeterminate_forms.md)

- [08 - Extrema, Maxima & Minima](https://github.com/itachi-re/butex-notes/blob/master/MATH-101/differential_calculus/08_extrema_maxima_minima.md)

- [09 - Partial Differentiation](https://github.com/itachi-re/butex-notes/blob/master/MATH-101/differential_calculus/09_partial_differentiation.md)



📂 Integral Calculus



- [01 - Indefinite Integrals](https://github.com/itachi-re/butex-notes/blob/master/MATH-101/integral_calculus/01_indefinite_integrals.md)

- [02 - Successive Reduction](https://github.com/itachi-re/butex-notes/blob/master/MATH-101/integral_calculus/02_successive_reduction.md)

- [03 - Definite Integrals](https://github.com/itachi-re/butex-notes/blob/master/MATH-101/integral_calculus/03_definite_integrals.md)

- [04 - Wallis Formula](https://github.com/itachi-re/butex-notes/blob/master/MATH-101/integral_calculus/04_wallis_formula.md)

- [05 - Improper Integrals](https://github.com/itachi-re/butex-notes/blob/master/MATH-101/integral_calculus/05_improper_integrals.md)

- [06 - Gamma & Beta Functions](https://github.com/itachi-re/butex-notes/blob/master/MATH-101/integral_calculus/06_gamma_beta_functions.md)

- [07 - Arc Length](https://github.com/itachi-re/butex-notes/blob/master/MATH-101/integral_calculus/07_arc_length.md)

- [08 - Area of Plane Curves](https://github.com/itachi-re/butex-notes/blob/master/MATH-101/integral_calculus/08_area_plane_curves.md)

- [09 - Volume of Solids of Revolution](https://github.com/itachi-re/butex-notes/blob/master/MATH-101/integral_calculus/09_volume_solids_revolution.md)



📂 Linear Algebra



- [01 - Matrix Fundamentals](https://github.com/itachi-re/butex-notes/blob/master/MATH-101/linear_algebra/01_matrix_fundamentals.md)

- [02 - Determinant](https://github.com/itachi-re/butex-notes/blob/master/MATH-101/linear_algebra/02_determinant.md)

- [03 - Inverse Matrix](https://github.com/itachi-re/butex-notes/blob/master/MATH-101/linear_algebra/03_inverse_matrix.md)

- [04 - System of Linear Equations](https://github.com/itachi-re/butex-notes/blob/master/MATH-101/linear_algebra/04_system_linear_equations.md)

- [05 - Elementary Operations](https://github.com/itachi-re/butex-notes/blob/master/MATH-101/linear_algebra/05_elementary_operations.md)

- [06 - Gaussian Elimination](https://github.com/itachi-re/butex-notes/blob/master/MATH-101/linear_algebra/06_gaussian_elimination.md)

- [07 - Cramer's Rule](https://github.com/itachi-re/butex-notes/blob/master/MATH-101/linear_algebra/07_cramers_rule.md)

- [08 - Echelon & Canonical Form](https://github.com/itachi-re/butex-notes/blob/master/MATH-101/linear_algebra/08_echelon_canonical_form.md)

- [09 - Rank of Matrix](https://github.com/itachi-re/butex-notes/blob/master/MATH-101/linear_algebra/09_rank_of_matrix.md)

- [10 - Consistency Test via Rank](https://github.com/itachi-re/butex-notes/blob/master/MATH-101/linear_algebra/10_consistency_test_rank.md)

- [Matrices Overview](https://github.com/itachi-re/butex-notes/blob/master/MATH-101/linear_algebra/matrices.md)

- [Orthogonal Matrices](https://github.com/itachi-re/butex-notes/blob/master/MATH-101/linear_algebra/orthogonal.md)



📂 Q&A / Class Tests



- [Class Test 02 Q&A - 2024](https://github.com/itachi-re/butex-notes/blob/master/MATH-101/qna/math_classtest_02_qna_2024.md)

- [Class Test 02 Q&A - 2025](https://github.com/itachi-re/butex-notes/blob/master/MATH-101/qna/math_classtest_02_qna_2025.md)

- [Class Test 02 Q&A - 2026](https://github.com/itachi-re/butex-notes/blob/master/MATH-101/qna/math_classtest_02_qna_2026.md)

- [Mixed Q&A](https://github.com/itachi-re/butex-notes/blob/master/MATH-101/qna/math_classtest_02_qna_mixed.md)



---



### YE-101 Topics



**[🔗 View All Natural Textile Fibres Notes](https://github.com/itachi-re/butex-notes/tree/master/YE-101)**



> YE-101 has been reorganised into three fibre families: **Bast**, **Cellulosic**, and **Protein**.



📂 Introduction



- [Introduction to Natural Fibres](https://github.com/itachi-re/butex-notes/blob/master/YE-101/introduction.md)



📂 Bast Fibres — Jute (Full Module)



- [Jute Notes Overview](https://github.com/itachi-re/butex-notes/blob/master/YE-101/bast/jute_notes.md)

- [01 - Introduction to Jute](https://github.com/itachi-re/butex-notes/blob/master/YE-101/bast/jute/01_introduction.md)

- [02 - Production & Processing](https://github.com/itachi-re/butex-notes/blob/master/YE-101/bast/jute/02_production_processing.md)

- [03 - Grading System](https://github.com/itachi-re/butex-notes/blob/master/YE-101/bast/jute/03_grading_system.md)

- [04 - Structure](https://github.com/itachi-re/butex-notes/blob/master/YE-101/bast/jute/04_structure.md)

- [05 - Chemical Composition](https://github.com/itachi-re/butex-notes/blob/master/YE-101/bast/jute/05_chemical_composition.md)

- [06 - Properties](https://github.com/itachi-re/butex-notes/blob/master/YE-101/bast/jute/06_properties.md)

- [07 - Defects](https://github.com/itachi-re/butex-notes/blob/master/YE-101/bast/jute/07_defects.md)

- [08 - End Uses & Identification](https://github.com/itachi-re/butex-notes/blob/master/YE-101/bast/jute/08_end_uses_identification.md)



📂 Bast Fibres — Flax (Full Module) ✨ New



- [01 - Introduction to Flax](https://github.com/itachi-re/butex-notes/blob/master/YE-101/bast/flax/01_introduction.md)

- [02 - Cultivation, Growth & Harvesting](https://github.com/itachi-re/butex-notes/blob/master/YE-101/bast/flax/02_cultivation_growth_harvesting.md)

- [03 - Geographical Distribution](https://github.com/itachi-re/butex-notes/blob/master/YE-101/bast/flax/03_geographical_distribution.md)

- [04 - Grading & Classification](https://github.com/itachi-re/butex-notes/blob/master/YE-101/bast/flax/04_grading_classification.md)

- [05 - Defects](https://github.com/itachi-re/butex-notes/blob/master/YE-101/bast/flax/05_defects.md)

- [06 - Physical & Morphological Structure](https://github.com/itachi-re/butex-notes/blob/master/YE-101/bast/flax/06_physical_morphological_structure.md)

- [07 - Microscopic View](https://github.com/itachi-re/butex-notes/blob/master/YE-101/bast/flax/07_microscopic_view.md)

- [08 - Chemical Composition](https://github.com/itachi-re/butex-notes/blob/master/YE-101/bast/flax/08_chemical_composition.md)

- [09 - Physical & Chemical Properties](https://github.com/itachi-re/butex-notes/blob/master/YE-101/bast/flax/09_physical_chemical_properties.md)

- [10 - Cottonized Flax](https://github.com/itachi-re/butex-notes/blob/master/YE-101/bast/flax/10_cottonized_flax.md)

- [11 - End Uses](https://github.com/itachi-re/butex-notes/blob/master/YE-101/bast/flax/11_end_uses.md)



📂 Cellulosic Fibres — Cotton



- [Cotton](https://github.com/itachi-re/butex-notes/blob/master/YE-101/cellulosic/cotton/Cotton.md)



📂 Protein Fibres — Silk (Full Module) ✨ New



- [Silk Notes Overview](https://github.com/itachi-re/butex-notes/blob/master/YE-101/protein/silk/silk_notes.md)

- [01 - Growth, Sericulture & Production Methods](https://github.com/itachi-re/butex-notes/blob/master/YE-101/protein/silk/01_growth_sericulture_and_methods_of_production.md)

- [02 - Geographical Distribution](https://github.com/itachi-re/butex-notes/blob/master/YE-101/protein/silk/02_geographical_distribution.md)

- [03 - Physical & Morphological Structure](https://github.com/itachi-re/butex-notes/blob/master/YE-101/protein/silk/03_physical_and_morphological_structure.md)

- [04 - Microscopic View](https://github.com/itachi-re/butex-notes/blob/master/YE-101/protein/silk/04_microscopic_view.md)

- [05 - Chemical Composition, Structure & Bonds](https://github.com/itachi-re/butex-notes/blob/master/YE-101/protein/silk/05_chemical_composition_structure_and_bonds.md)

- [06 - Physical & Chemical Properties](https://github.com/itachi-re/butex-notes/blob/master/YE-101/protein/silk/06_physical_and_chemical_properties.md)

- [07 - End Uses](https://github.com/itachi-re/butex-notes/blob/master/YE-101/protein/silk/07_end_uses.md)

- [08 - Difference Between Wool, Silk & Hair Fibre](https://github.com/itachi-re/butex-notes/blob/master/YE-101/protein/silk/08_difference_between_wool_silk_and_hair_fibre.md)



📂 Protein Fibres — Wool (Full Module)



- [Introduction to Wool](https://github.com/itachi-re/butex-notes/blob/master/YE-101/protein/wool/wool_introduction.md)

- [Morphology](https://github.com/itachi-re/butex-notes/blob/master/YE-101/protein/wool/wool_morphology.md)

- [Classification](https://github.com/itachi-re/butex-notes/blob/master/YE-101/protein/wool/wool_classification.md)

- [Manufacturing](https://github.com/itachi-re/butex-notes/blob/master/YE-101/protein/wool/wool_manufacturing.md)

- [Physical Properties](https://github.com/itachi-re/butex-notes/blob/master/YE-101/protein/wool/wool_physical_properties.md)

- [Chemical Structure](https://github.com/itachi-re/butex-notes/blob/master/YE-101/protein/wool/wool_chemical_structure.md)

- [Chemical Properties](https://github.com/itachi-re/butex-notes/blob/master/YE-101/protein/wool/wool_chemical_properties.md)



📂 Q&A / Class Tests



- [NTF Class Test 02 Q&A - 2024](https://github.com/itachi-re/butex-notes/blob/master/YE-101/qna/NTF_classtest_02_qna_2024_.md)

- [NTF Class Test 02 Q&A - 2024-25](https://github.com/itachi-re/butex-notes/blob/master/YE-101/qna/ntf_classtest_02_qna_24-25.md)

- [NTF Class Test 02 Q&A - 2026](https://github.com/itachi-re/butex-notes/blob/master/YE-101/qna/ntf_classtest_02_qna_2026.md)

- [Q&A 2012–2019](https://github.com/itachi-re/butex-notes/blob/master/YE-101/qna/qna_2012_19.md)



---



### HSS-101 Topics



**[🔗 View All HSS Notes](https://github.com/itachi-re/butex-notes/tree/master/HSS-101)**



**Business Communication Module:**



- [Introduction to Business Communication](https://github.com/itachi-re/butex-notes/blob/master/HSS-101/01_intro.md)

- [Business Letters & Email Writing](https://github.com/itachi-re/butex-notes/blob/master/HSS-101/02_letters.md)

- [Business Presentations](https://github.com/itachi-re/butex-notes/blob/master/HSS-101/03_presentations.md)

- [Business Meetings](https://github.com/itachi-re/butex-notes/blob/master/HSS-101/04_meetings.md)



📂 Extras — Group Project (x86 AI Presentation) ✨ New



**Research Notes:**

- [AI History Notes](https://github.com/itachi-re/butex-notes/blob/master/HSS-101/extras/01_Research/member2_AI_history_notes.md)

- [ML & Deep Learning Notes](https://github.com/itachi-re/butex-notes/blob/master/HSS-101/extras/01_Research/member3_ML_DL_notes.md)

- [Applications Notes](https://github.com/itachi-re/butex-notes/blob/master/HSS-101/extras/01_Research/member4_Applications_notes.md)

- [Ethics & Future Notes](https://github.com/itachi-re/butex-notes/blob/master/HSS-101/extras/01_Research/member6_Ethics_Future_notes.md)



**Presentation Scripts:**

- [🎤 Final Script](https://github.com/itachi-re/butex-notes/blob/master/HSS-101/extras/03_Script/x86_FINAL_SCRIPT.md)

- [Intro / Leader Script](https://github.com/itachi-re/butex-notes/blob/master/HSS-101/extras/03_Script/intro_leader.md)

- [Member 2 Script](https://github.com/itachi-re/butex-notes/blob/master/HSS-101/extras/03_Script/member2_script.md)

- [Member 3 Script](https://github.com/itachi-re/butex-notes/blob/master/HSS-101/extras/03_Script/member3_script.md)

- [Member 4 Script](https://github.com/itachi-re/butex-notes/blob/master/HSS-101/extras/03_Script/member4_script.md)

- [Member 6 Script](https://github.com/itachi-re/butex-notes/blob/master/HSS-101/extras/03_Script/member6_script.md)



**References & Guides:**

- [References Masterlist](https://github.com/itachi-re/butex-notes/blob/master/HSS-101/extras/05_References/references_masterlist.md)

- [Presentation Script (Draft)](https://github.com/itachi-re/butex-notes/blob/master/HSS-101/extras/x86_presentation_script.md)

- [Project Guide](https://github.com/itachi-re/butex-notes/blob/master/HSS-101/extras/x86_project_guide.md)



📂 Q&A / Class Tests



- [BCE Class Test 02 Q&A - 2024](https://github.com/itachi-re/butex-notes/blob/master/HSS-101/qna/BCE_classtest_02_qna_2024_.md)

- [Class Test 01 Suggestions](https://github.com/itachi-re/butex-notes/blob/master/HSS-101/qna/sugg_classtest_01.md)

- [Class Test 02 Suggestions](https://github.com/itachi-re/butex-notes/blob/master/HSS-101/qna/sugg_classtest_02.md)

- [Business Report Example](https://github.com/itachi-re/butex-notes/blob/master/HSS-101/qna/business_report_example.docx)



---



### Lab Reports



**[🔗 View All Lab Reports](https://github.com/itachi-re/butex-notes/tree/master/lab_reports)**



📂 Chemistry Lab (CHEM-102) ✨ New



- [CHEM-102 Lab Report](https://github.com/itachi-re/butex-notes/blob/master/lab_reports/CHEM-102_lab_report.md)

- [CHEM-102 Lab Report (AKD variant)](https://github.com/itachi-re/butex-notes/blob/master/lab_reports/CHEM-102_lab_report_AKD.md)

- [Chemistry Extra](https://github.com/itachi-re/butex-notes/blob/master/lab_reports/chem_extra.md)

- [Chemistry Lab Report Suggestions](https://github.com/itachi-re/butex-notes/blob/master/lab_reports/chem_labrep_sug.md)



📂 Physics Lab (PHY-102) ✨ New



- [PHY-102 Lab Reports](https://github.com/itachi-re/butex-notes/blob/master/lab_reports/PHY-102_Lab_Reports.md)

- [PHY-102 Lab Report (Imtiaj)](https://github.com/itachi-re/butex-notes/blob/master/lab_reports/PHY-102_lab_report_Imtiaj.md)

- [PHY-102 Lab Report (Tahin)](https://github.com/itachi-re/butex-notes/blob/master/lab_reports/PHY-102_lab_report_Tahin.md)



📂 Mechanical Lab ✨ New



- [Mechanical Lab Reports](https://github.com/itachi-re/butex-notes/blob/master/lab_reports/mechanical-lab-reports.md)



---



### ME-102 Practical



**[🔗 View ME-102 Practical Notes](https://github.com/itachi-re/butex-notes/tree/master/tmp/ME-102-Practical)**



📂 Mechanical Engineering Practical Topics ✨ New



- [01 - Boilers](https://github.com/itachi-re/butex-notes/blob/master/tmp/ME-102-Practical/01_boilers.md)

- [02 - Pumps](https://github.com/itachi-re/butex-notes/blob/master/tmp/ME-102-Practical/02_pumps.md)

- [03 - Engines](https://github.com/itachi-re/butex-notes/blob/master/tmp/ME-102-Practical/03_engines.md)

- [04 - Refrigeration](https://github.com/itachi-re/butex-notes/blob/master/tmp/ME-102-Practical/04_refrigeration.md)

- [05 - Turbines](https://github.com/itachi-re/butex-notes/blob/master/tmp/ME-102-Practical/05_turbines.md)



---



## 🛠️ Workflow & Usage



### 📝 Creating a New Note



Use the automated script to create properly formatted notes:



```bash

# Syntax: ./scripts/new_note.sh [COURSE_CODE] [FILE_NAME]

./scripts/new_note.sh YE-201 02_fiber_length_testing



# This creates: YE-201/02_fiber_length_testing.md

# With pre-filled template including date, course info, and structure

```



**Manual Method:**

```bash

cp _templates/note_template.md COURSE-CODE/topic_name.md

# Edit the frontmatter and add your content

```



### 📤 Exporting to PDF



Convert all notes to PDF format with proper formatting:



```bash

# Export all markdown notes to PDF

./scripts/build_all.sh



# Output will be in: exported_pdfs/

# Maintains directory structure: exported_pdfs/YE-101/01_natural_fibres.pdf

```



## 🖥️ System Requirements



### 🐧 Linux (Recommended)

- Any modern Linux distribution (Ubuntu / Debian, Arch / Manjaro, Fedora, openSUSE)

- Core tools: `git`, `bash` or `zsh`, `python`

- Optional: `docker`, `make`



---



### 🪟 Windows

- Windows 10 / 11 (64-bit)

- Required: Git for Windows, PowerShell or Windows Terminal

- Recommended: **WSL2** (Ubuntu or openSUSE), Python 3.x

- Optional: Docker Desktop (WSL2 backend)



---



### 🍎 macOS

- macOS 12+ (Monterey or newer)

- Required: Xcode Command Line Tools (`xcode-select --install`)

- Recommended: Homebrew, Git, Python 3.x

- Optional: Docker Desktop



---



### 🌐 Platform-Independent

- A modern web browser (Chrome / Firefox / Brave)

- Markdown viewer: VS Code, Obsidian, or Typora

- PDF reader (for exported notes)



---



### 📦 Recommended Editors

- **VS Code** (Markdown + Git extensions)

- **Neovim** (for terminal users)

- **Obsidian** (knowledge base style)



### 📂 Repository Structure



```

butex-notes/

├── CHEM-101/                    # Chemistry notes

│   ├── 01_periodicity/

│   ├── 02_chemical_bonding/

│   ├── 06_physical_chemistry/

│   ├── 10_photochemistry/

│   ├── qna/

│   └── README.md

├── PHY-101/                     # Physics notes

│   ├── 01_elasticity/

│   ├── 02_fluid_mechanics/

│   ├── 03_interference_of_light/

│   ├── qna/

│   └── README.md

├── MATH-101/                    # Mathematics notes

│   ├── differential_calculus/

│   ├── integral_calculus/

│   ├── linear_algebra/

│   └── qna/

├── HSS-101/                     # Humanities & Social Science

│   ├── 01_intro.md … 04_meetings.md

│   ├── extras/                  # Group project materials

│   │   ├── 01_Research/         # Member research notes

│   │   ├── 03_Script/           # Presentation scripts

│   │   └── 05_References/       # Reference masterlist

│   └── qna/

├── YE-101/                      # Natural Textile Fibres

│   ├── bast/

│   │   ├── flax/                # Flax module (11 files)

│   │   ├── jute/                # Jute module (8 files)

│   │   └── jute_notes.md

│   ├── cellulosic/

│   │   └── cotton/Cotton.md

│   ├── protein/

│   │   ├── silk/                # Silk module (8 files)

│   │   └── wool/                # Wool module (7 files)

│   ├── introduction.md

│   └── qna/

├── YE-201/                      # Fibre & Yarn Testing

│   └── 01_testing_and_moisture.md

├── lab_reports/                 # Lab reports (CHEM-102, PHY-102, Mechanical)

├── tmp/

│   └── ME-102-Practical/        # ME practical notes (5 topics)

├── pdfs/                        # PDF resources

├── scripts/                     # Automation scripts

│   ├── new_note.sh

│   └── build_all.sh

├── _templates/                  # Note templates

├── CHANGELOG.md

├── CONTRIBUTING.md

└── README.md

```



---



## 📋 Note Template Structure



Each note follows a consistent structure for better organization:



```markdown

---

subject: YE-101

topic: Natural Fibres

date: 2025-12-10

tags: [notes, YE-101, fabric-engineering]

---



# Topic Title



## 1. Key Concepts

- Main ideas and definitions



## 2. Formulas / Equations

$$

E = mc^2

$$



## 3. Important Notes

> Critical information and exam tips

```



---



## 🎓 Department Focus: Fabric Engineering



As a **Fabric Engineering** student, this repository emphasizes:



- 🧵 **Yarn Engineering** - Fiber properties, yarn structure, testing methods

- 🧪 **Textile Testing** - Quality control, standard testing procedures

- 📊 **Technical Analysis** - Data interpretation, statistical methods

- 🏭 **Manufacturing Processes** - Spinning, weaving, finishing



While foundation courses (Math, Physics, Chemistry) are included, the primary focus is on textile-specific subjects relevant to fabric manufacturing and quality assurance.



---



## 🚀 Getting Started



### Clone the Repository



```bash

git clone https://github.com/itachi-re/butex-notes.git

cd butex-notes

```



### Make Scripts Executable



```bash

chmod +x scripts/new_note.sh

chmod +x scripts/build_all.sh

```



### Start Taking Notes



```bash

# Create a new note

./scripts/new_note.sh YE-101 03_fiber_identification



# Edit with your preferred editor

nano YE-101/03_fiber_identification.md

# or

nvim YE-101/03_fiber_identification.md

```



---



## 🔧 Tools & Technologies



- **Markdown** - Note formatting

- **LaTeX** - Mathematical equations

- **Pandoc** - Document conversion

- **Git** - Version control

- **Bash** - Automation scripts

- **GitHub** - Hosting & collaboration



---



## 📚 Study Tips



1. **Regular Updates** - Commit notes after each lecture

2. **Clear Formatting** - Use headings, lists, and emphasis consistently

3. **Include Examples** - Add solved problems and diagrams

4. **Tag Properly** - Use relevant tags for easy searching

5. **Review & Refine** - Update notes during exam preparation

6. **Cross-Reference** - Link related topics across courses



---



## 🤝 Contributing



While this is a personal note repository, suggestions and corrections are welcome!



- 🐛 **Found an error?** Open an issue.

- 💡 **Have a suggestion?** Create a pull request.

- 📖 **Want to share resources?** Add them to discussions.



For detailed guidelines, please refer to the [Contributing Guide](https://github.com/itachi-re/butex-notes/blob/master/CONTRIBUTING.md).



---



## 📄 License



This project is licensed under the terms specified in the [LICENSE](LICENSE) file.



**Note:** These are personal study notes. While effort is made to ensure accuracy, they should be used as supplementary material alongside official course resources.



---



## 🔗 Connect



[![GitHub](https://img.shields.io/badge/GitHub-itachi--re-181717?style=flat&logo=github)](https://github.com/itachi-re)

[![Repo](https://img.shields.io/badge/Repo-butex--notes-blue?style=flat&logo=github)](https://github.com/itachi-re/butex-notes)

[![Telegram Study](https://img.shields.io/badge/Telegram-Study%20Resources-26A5E4?style=flat&logo=telegram)](https://t.me/itachi_reinc)

[![Telegram Contact](https://img.shields.io/badge/Telegram-Contact-26A5E4?style=flat&logo=telegram)](https://t.me/itachi_re)



---



## 📊 Repository Stats



```

Total Notes: 41 directories, 216 files

Last Updated: Saturday, April 04, 2026

Export Format: Markdown → PDF

Department: Fabric Engineering

University: BUTEX

```



---






**⭐ Star this repo if you find it helpful!**



Made with 📝 and ☕ by a Fabric Engineering student



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