Untitled

from pptx import Presentation

# Create a new PowerPoint presentation
presentation = Presentation()

# Slide 1: Title Slide
slide = presentation.slides.add_slide(presentation.slide_layouts[0])
title = slide.shapes.title
subtitle = slide.placeholders[1]

title.text = "Salinity Determination in Seawater"
subtitle.text = "Understanding Practical and Absolute Salinity Variations"

# Slide 2: Abstract
slide = presentation.slides.add_slide(presentation.slide_layouts[1])
title = slide.shapes.title
content = slide.placeholders[1]

title.text = "Abstract"
content.text = (
    "Salinity determination using the Practical Salinity Scale 1978 (PSS-78) is based on electrical "
    "conductivity but differs slightly from absolute salinity. This difference arises due to historical "
    "practices and spatial variations in seawater composition. A mathematical model combining chemical "
    "composition and conductivity relationships estimates a correction factor, δSA, for accurate salinity "
    "determination. The model closely aligns with density-based estimates, though minor discrepancies "
    "highlight uncertainties in biogeochemical processes. This work refines δSA calculations and enhances "
    "our understanding of ocean salinity variations."
)

# Slide 3: Introduction
slide = presentation.slides.add_slide(presentation.slide_layouts[1])
title = slide.shapes.title
content = slide.placeholders[1]

title.text = "Introduction"
content.text = (
    "Salinity measurement has been standardized using PSS-78 for over 30 years. "
    "Practical salinity (SP) is derived from conductivity but deviates from absolute salinity (SA), "
    "which is the mass of dissolved solids. This deviation results from variations in seawater composition "
    "and historical measurement practices. Accurate salinity is critical for oceanographic studies, "
    "particularly in density and circulation analyses."
)

# Slide 4: Objective
slide = presentation.slides.add_slide(presentation.slide_layouts[1])
title = slide.shapes.title
content = slide.placeholders[1]

title.text = "Objective"
content.text = (
    "Develop a mathematical model to estimate δSA, accounting for changes in seawater composition.\n"
    "- Combine chemical and conductivity models for accuracy.\n"
    "- Validate model predictions against density-based estimates.\n"
    "- Address biogeochemical uncertainties influencing salinity variations."
)

# Slide 5: Method
slide = presentation.slides.add_slide(presentation.slide_layouts[1])
title = slide.shapes.title
content = slide.placeholders[1]

title.text = "Method"
content.text = (
    "- A chemical model representing standard seawater composition was developed.\n"
    "- Variations in conductivity were predicted using multi-component solution models.\n"
    "- Correction factor δSA was computed for compositional changes.\n"
    "- Model results were compared with density-based salinity estimates."
)

# Slide 6: Results and Discussion
slide = presentation.slides.add_slide(presentation.slide_layouts[1])
title = slide.shapes.title
content = slide.placeholders[1]

title.text = "Results and Discussion"
content.text = (
    "- The model’s δSA predictions aligned with density-based calculations.\n"
    "- Spatial variations in seawater composition (e.g., North Pacific) highlighted δSA ranges.\n"
    "- Biogeochemical processes, such as alkalinity and carbon changes, showed minimal conductivity impact.\n"
    "- Minor discrepancies point to uncertainties in carbonate and nutrient dynamics."
)

# Slide 7: Conclusion
slide = presentation.slides.add_slide(presentation.slide_layouts[1])
title = slide.shapes.title
content = slide.placeholders[1]

title.text = "Conclusion"
content.text = (
    "- The developed model provides accurate δSA estimates, enhancing salinity measurement precision.\n"
    "- It underscores the importance of biogeochemical processes in salinity variation.\n"
    "- Future refinements can address existing uncertainties, benefiting oceanographic research."
)

# Save the presentation
file_path = "/mnt/data/Seawater_Salinity_Presentation.pptx"
presentation.save(file_path)

file_path