Notes, summaries, assignments, exams, and problems for University

Atherosclerosis: Pathogenesis & Complications

A chronic inflammatory disease of medium and large arteries, caused by endothelial injury and lipid accumulation.

Key Risk Factors:

• Hypertension
• Hyperlipidemia
• Smoking
• Diabetes

Lesions evolve from fatty streaks → fibrous plaques → complicated plaques.

Common Complications:

• Myocardial Infarction (MI)
• Stroke
• Aneurysm
• Peripheral Artery Disease

Histologically, it shows lipid cores, calcification, and fibrous caps.

Hypertensive Disease: Organ Damage & Malignant Forms

Chronic blood pressure (BP) elevation causes vascular and organ damage.

Consequences Include:

• Arteriolosclerosis
• Left Ventricular (LV) hypertrophy
• Stroke
• Chronic Kidney Disease

Malignant hypertension (diastolic BP >120 mmHg) causes fibrinoid necrosis... Continue reading "Essential Pathology Topics: Systemic Diseases & Neoplasms" »

MATLAB is a high-level programming and numerical computing environment developed by MathWorks. It is widely used in engineering and scientific fields for tasks like data analysis, algorithm development, modeling, and simulation. Its core strength lies in its ability to handle matrices and arrays directly, making it well-suited for mathematical computations.

Key Features and Capabilities

• Programming Language: MATLAB incorporates a powerful, matrix-based programming language that allows for concise and efficient expression of mathematical operations.
• Interactive Environment: MATLAB provides an interactive desktop environment for performing calculations, analyzing data, and developing algorithms.

Mathematical Functions

It offers a vast library of built-... Continue reading "MATLAB Programming: Key Features, Uses, and Resources" »

🧾 Data Transfer Instructions

These instructions are used to move data between registers, memory, and I/O ports.

➕ Arithmetic Instructions

These instructions perform basic mathematical operations.

Anti-Motility Medications (Pharmacy Only)

These medications work by relaxing the smooth muscles in the intestinal wall, reducing bowel movements.

Loperamide + Co-phenotrope (Dhamotil)

Loperamide

• Indication: Symptomatic relief of acute or chronic diarrhea.
• Dose: Maximum 16mg daily. Limit use to less than 48 hours.
• Side Effects: Constipation, nausea, vomiting, bloating.
• Special Precautions (SPC):
  • Stop taking once diarrhea resolves (constipation may occur).
  • Take with food.

Co-phenotrope

• Indication: Acute diarrhea in adults.
• Dose: Maximum 8 tablets daily.
• Contraindications: Not for children under 12 years old.
• Special Precautions (SPC): May cause dizziness and drowsiness; do not drive or operate machinery.

Adsorbent Medications (General Sales List)

Adsorbents... Continue reading "Effective Diarrhea Relief: Medications and Management" »

Operating Systems: System Calls and File Descriptors

int main(int argc, char *argv[]) {
  int fd = open(argv[1], O_WRONLY | O_CREAT | O_EXCL, 0644);
  if (fd == -1) {
    printf("There was a problem creating \"%s\"!\n", argv[1]);
    return 1;
  }
  close(fd);
  return 0;
}

void copyContents(int sourceFD, int destinationFD) {
  char buffer[kCopyIncrement];
  while (true) {
    ssize_t bytesRead = read(sourceFD,

Madrid: Historical Urban Evolution

The Capital Shift and Early Growth (1561–1750)

In 1561, the capital moved from Toledo to Madrid. The Regalia de Aposento was introduced as a new law for court member accommodation, leading to the creation of "Las casas de la malicia" (Trick Houses). The city experienced significant population growth:

• 1561: 12,700 people
• 1571: 42,000 people
• 1618: 108,000 people
• 1850: 220,000 people

Key developments included the Felipe IV wall in 1625 (the boundary of the Teixeira map) and urban improvements between 1600 and 1750, such as the Buen Retiro, the Town Hall, and new urban promenades.

Monumental Transformation and Squares

Carlos III (1759–1771) oversaw a major urban and monumental transformation led by architects Ventura

Islamic Architecture: Mosques and Sacred Spaces

Mosque Elements and Orientation

• Praying Room: A sacred space, even if not considered the physical "House of Allah."
• Orientation (Qibla): East orientation towards Mecca for prayer.
• Minbar: The pulpit, the seat of the Imam.
• Minaret: A tower used to call the Muslim community to prayer.
• Mihrab: A semicircular niche indicating the Qibla wall facing Mecca.
• Maqsura: A safe space located in front of the Mihrab, historically reserved for Caliphs and Emirs.
• Ablutions Area: Space designated for ritual cleansing before prayer.

Parts of a Mosque Complex

• Ziyada: The enclosure space.
• Sahn: The central courtyard or patio.
• Sapil: A public fountain.
• Haram: The roofed prayer space.

Early Examples

House of Muhammad in Medina (7th

Asturian Architecture (9th Century)

San Julian de los Prados

• Structure: 3 naves inscribed in a rectangle with a basilica scheme.
• Features: 3-parted head covered with barrel vaults, Visigothic precedents, Roman arches, and semicircular arches.
• Design: Includes a narthex and interior mural decoration featuring fake arches without human figures.

Santa Maria de Naranco, Oviedo

• Structure: Compact stone volume with an inclined roof and two independent floors.
• Aesthetics: Rhythmical, vertical appearance with symmetrical floorplan.
• Details: Upper room with barrel vaults and transversal arches, buttresses, blind arches for lightness, and Corinthian capitals.

Mozarabic Architecture (10th Century)

Refers to Spanish-Roman citizens living in Andalusia during the

Construction System and Composition

The construction system is defined by arches that generate a second direction, with wooden beams on the ceiling made wider to provide support. Arches are positioned perpendicular to the Qibla, utilizing semicircular arches to support the structure alongside Corinthian capitals. The materials consist of grey and red bricks. Key components include:

• Beam-Wooden Roof Board
• Roof evacuation channel
• Plaster false edges vault
• Semicircular arch
• Rectangular pillar
• Horseshoe codal arch
• Roll modillion

Decoration and Structural Logic

Decoration features vegetal, geometrical, and calligraphic motives. The section of the pillar becomes wider to make it higher; otherwise, the columns would collapse, which is the primary reason for... Continue reading "Islamic Architecture in Al-Andalus: Umayyad to Nasrid" »