The excretory system removes waste from the body through excretion. The kidneys are the main organs of excretion, filtering waste such as urea and excess water and salts from the blood and excreting it as urine. The nephrons are the functional units of the kidneys that filter the blood in a two-step process of filtration and reabsorption, where most of the filtered water and nutrients are reabsorbed but waste remains and becomes urine. Urine is transported from the kidneys to the bladder for storage until excretion.
Urine is formed in the kidneys through filtration of blood. The urine is then passed through the ureters to the bladder, where it is stored. During urination, the urine is passed from the bladder through the urethra to the outside of the body.
Urine is formed in the kidneys through filtration of blood. The urine is then passed through the ureters to the bladder, where it is stored. During urination, the urine is passed from the bladder through the urethra to the outside of the body.
Functions of Operating Systems:
Types of Operating Systems:
Real-Time Operating Systems
Single-User/Single-Tasking Operating Systems
Single-User/Multitasking Operating Systems
Multi-User/Multitasking Operating Systems
User Interface
Graphical User Interface (GUI)
Command-Line Interface
Running Programs
Managing Hardware
Functions of Operating Systems:
Types of Operating Systems:
Real-Time Operating Systems
Single-User/Single-Tasking Operating Systems
Single-User/Multitasking Operating Systems
Multi-User/Multitasking Operating Systems
User Interface
Graphical User Interface (GUI)
Command-Line Interface
Running Programs
Managing Hardware
This is a document enumerating the different types of plant leaf apices and margins with the corresponding plant example with its scientific name and pictures. Bio 103: Fundamentals in Plant Biology.
Life of every organism depends on certain basic processes. Excretion is one among them. Different organisms follow different modes of excretion. In complex organisms including humans, there is a specialized system for excretion called human excretory system.
Urinary System, Kidney, Nephron, Function of Kidney, Urinary System Disease, Process of urine formation- Glomerular Filtration, Re absorption, Secretion
regeneration
Proliferative Capacities of Tissues
Stem Cells
REPAIR BY CONNECTIVE TISSUE
Angiogenesis
Migration of Fibroblasts and ECM Deposition (Scar Formation)
PATHOLOGIC ASPECTS OF REPAIR
What is wound healing?
Classification of Wounds
Classification of Wounds Closure
Risk Factors for Surgical Wound Infections
Antibiotic Use
Hypertrophic Scars and Keloids
25.1Digestion and Absorption of Lipids
25.2Triacylglycerol Storage and Mobilization
25.3 Glycerol Metabolism
25.4 Oxidation of Fatty Acids
25.5 ATP Production from Fatty Acid Oxidation
25.6 Ketone Bodies
25.7 Biosynthesis of Fatty Acids: Lipogenesis
25.8 Relationship Between Lipogenesis and Citric Acid Cycle Intermediates
25.9 Fate of Fatty-Acid Generated Acetyl CoA
25.10 Relationships Between Lipid and Carbohydrate Metabolism
25.11B Vitamins and Lipid Metabolism
24.1 Digestion and Absorption of Carbohydrates
24.2 Hormonal Control of Carbohydrate Metabolism
24.3 Glycogen Synthesis and Degradation
24.4 Gluconeogenesis
24.5 The Pentose Phosphate Pathway
24.6 Glycolysis
24.7 Terminology for Glucose Metabolic Pathways
24.8 The Citric Acid Cycle
24.9 The Electron Transport Chain
24.10 Oxidative Phosphorylation
24.11 ATP Production for the Complete Oxidation of Glucose
24.12 Importance of ATP
24.13 Non-ETC Oxygen-Consuming Reactions
24.14 B-Vitamins and Carbohydrate Metabolism
Seminar of U.V. Spectroscopy by SAMIR PANDASAMIR PANDA
Spectroscopy is a branch of science dealing the study of interaction of electromagnetic radiation with matter.
Ultraviolet-visible spectroscopy refers to absorption spectroscopy or reflect spectroscopy in the UV-VIS spectral region.
Ultraviolet-visible spectroscopy is an analytical method that can measure the amount of light received by the analyte.
Earliest Galaxies in the JADES Origins Field: Luminosity Function and Cosmic ...Sérgio Sacani
We characterize the earliest galaxy population in the JADES Origins Field (JOF), the deepest
imaging field observed with JWST. We make use of the ancillary Hubble optical images (5 filters
spanning 0.4−0.9µm) and novel JWST images with 14 filters spanning 0.8−5µm, including 7 mediumband filters, and reaching total exposure times of up to 46 hours per filter. We combine all our data
at > 2.3µm to construct an ultradeep image, reaching as deep as ≈ 31.4 AB mag in the stack and
30.3-31.0 AB mag (5σ, r = 0.1” circular aperture) in individual filters. We measure photometric
redshifts and use robust selection criteria to identify a sample of eight galaxy candidates at redshifts
z = 11.5 − 15. These objects show compact half-light radii of R1/2 ∼ 50 − 200pc, stellar masses of
M⋆ ∼ 107−108M⊙, and star-formation rates of SFR ∼ 0.1−1 M⊙ yr−1
. Our search finds no candidates
at 15 < z < 20, placing upper limits at these redshifts. We develop a forward modeling approach to
infer the properties of the evolving luminosity function without binning in redshift or luminosity that
marginalizes over the photometric redshift uncertainty of our candidate galaxies and incorporates the
impact of non-detections. We find a z = 12 luminosity function in good agreement with prior results,
and that the luminosity function normalization and UV luminosity density decline by a factor of ∼ 2.5
from z = 12 to z = 14. We discuss the possible implications of our results in the context of theoretical
models for evolution of the dark matter halo mass function.
Comparing Evolved Extractive Text Summary Scores of Bidirectional Encoder Rep...University of Maribor
Slides from:
11th International Conference on Electrical, Electronics and Computer Engineering (IcETRAN), Niš, 3-6 June 2024
Track: Artificial Intelligence
https://www.etran.rs/2024/en/home-english/
The ability to recreate computational results with minimal effort and actionable metrics provides a solid foundation for scientific research and software development. When people can replicate an analysis at the touch of a button using open-source software, open data, and methods to assess and compare proposals, it significantly eases verification of results, engagement with a diverse range of contributors, and progress. However, we have yet to fully achieve this; there are still many sociotechnical frictions.
Inspired by David Donoho's vision, this talk aims to revisit the three crucial pillars of frictionless reproducibility (data sharing, code sharing, and competitive challenges) with the perspective of deep software variability.
Our observation is that multiple layers — hardware, operating systems, third-party libraries, software versions, input data, compile-time options, and parameters — are subject to variability that exacerbates frictions but is also essential for achieving robust, generalizable results and fostering innovation. I will first review the literature, providing evidence of how the complex variability interactions across these layers affect qualitative and quantitative software properties, thereby complicating the reproduction and replication of scientific studies in various fields.
I will then present some software engineering and AI techniques that can support the strategic exploration of variability spaces. These include the use of abstractions and models (e.g., feature models), sampling strategies (e.g., uniform, random), cost-effective measurements (e.g., incremental build of software configurations), and dimensionality reduction methods (e.g., transfer learning, feature selection, software debloating).
I will finally argue that deep variability is both the problem and solution of frictionless reproducibility, calling the software science community to develop new methods and tools to manage variability and foster reproducibility in software systems.
Exposé invité Journées Nationales du GDR GPL 2024
This presentation explores a brief idea about the structural and functional attributes of nucleotides, the structure and function of genetic materials along with the impact of UV rays and pH upon them.
Observation of Io’s Resurfacing via Plume Deposition Using Ground-based Adapt...Sérgio Sacani
Since volcanic activity was first discovered on Io from Voyager images in 1979, changes
on Io’s surface have been monitored from both spacecraft and ground-based telescopes.
Here, we present the highest spatial resolution images of Io ever obtained from a groundbased telescope. These images, acquired by the SHARK-VIS instrument on the Large
Binocular Telescope, show evidence of a major resurfacing event on Io’s trailing hemisphere. When compared to the most recent spacecraft images, the SHARK-VIS images
show that a plume deposit from a powerful eruption at Pillan Patera has covered part
of the long-lived Pele plume deposit. Although this type of resurfacing event may be common on Io, few have been detected due to the rarity of spacecraft visits and the previously low spatial resolution available from Earth-based telescopes. The SHARK-VIS instrument ushers in a new era of high resolution imaging of Io’s surface using adaptive
optics at visible wavelengths.
1. 1
THE EXCRETORY SYSTEM
The body must rid itself of the waste products of cellular activity. The process of removing metabolic waste, called EXCRETION, is just as vital
as digestion in maintaining the body's internal environment. The Urinary System not only excretes waste but also helps maintain Homeostasis
by returning the content of water and other substances in the blood.
1. THE PROCESS BY WHICH METABOLIC WASTES ARE REMOVED FROM THE BODY IS CALLED EXCRETION.
2. METABOLIC WASTES INCLUDE EXCESS WATER AND SALTS, CARBON DIOXIDE FROM CELLULAR RESPIRATION, NITROGENOUS
COMPOUNDS FROM THE BREAKDOWN OF PROTEINS, AND UREA.
3. THE SKIN, LUNGS, AND KIDNEYS-ALONG WITH THEIR ASSOCIATED ORGANS-MAKE UP THE EXCRETORY SYSTEM.
4. The SKIN excretes excess water and salts, and a small amount of urea.
5. The KIDNEYS excrete the Nitrogenous Wastes, the excretion of Water is necessary to dissolve wastes and is closely regulated by the
Kidneys, the Main Organ of the Urinary system.
6. The LUNGS excrete most of the carbon dioxide.
THE KIDNEYS
1. THE MAIN ORGANS OF THE EXCRETORY SYSTEM ARE THE KIDNEYS. We have Two BEAN-SHAPPED Kidneys, one on each side of
the spinal cord near the lower back, one behind the Stomach the other behind the Liver. Together they Regulate the Chemical Composition of
Blood.
2. Two Blood Vessels Enter and Leave each Kidney. The Renal Artery Enters each Kidney and the Renal Vein Exists each Kidney.
3. A Third Vessel, the URETER, leaves each Kidney carrying fluid to the URINARY BLADDER.
4. Waste-laden Blood Enters the Kidney through the Renal Artery. Excess water, Urea, and other waste products are removed from the blood
and are collected in the URETER. The most common mammalian metabolic waste is UREA. The Filtered Blood exits through the Renal Vein.
5. UREA is a Nitrogenous product made by the Liver. Nitrogenous Wastes are initially brought to the Liver as AMMONIA, a Chemical
Compound of Nitrogen so Toxic that it could not remain in the body without harming cells.
6. The Liver Removes Ammonia from the blood and converts it to the less harmful substance Urea. The Urea enters the Bloodstream and is
then removed by the Kidneys.
KIDNEY STRUCTURE
1. Each Kidney is a Bean-Shaped organ, about the size of a Fist.
2. The Kidney has THREE Regions; the Inner part called the RENAL MEDULLA; the Outer part called the RENAL CORTEX and the RENAL
PELVIS, a Funnel Shaped Structure in the Center of the Kidney.
3. The Renal Cortex contains the NEPHRONS, THE BASIC FUNCTIONAL UNIT OF THE KIDNEYS.
4. EACH NEPHRON IS A SMALL INDEPENDENT FILTERING UNIT. IN EACH KIDNEY THERE ARE ABOUT 1 MILLION NEPHRONS.
5. Nephrons filters water and solutes from blood. Most of the Filtrate is reclaimed from them. The rest, form an Amber Colored Liquid called
URINE enters tubelike collecting ducts. These lead to the Kidneys Central Cavity and the entrance to a Ureter.
6. Each Nephron has its own blood supply and its own collecting tubule, which leads to the Ureter.
7. As blood enters a Nephron through an Arteriole, impurities are filtered out and emptied into he collecting tubule. Purified blood leaves the
nephron through a Venule.
8. The process of Blood Purification involves Two Separate Processes-FILTRATION AND REABSORPTION.
FILTRATION
1. When blood enters a Nephron, it flows into a network of 50 Capillaries known as a GLOMERULUS.
2. The Glomerulus is encased in the upper end of the Nephron by a Cup-Shaped structure called BOWMAN'S CAPSULE.
3. The Blood is under pressure and the walls of the capillaries and Bowman's Capsule are permeable, much of the Fluid from the blood filters
into Bowman's Capsule and the material Filtered from the blood flows through the RENAL TUBULE, a long tube with permeable walls.
4. The Renal Tube Consists of Three PARTS: THE PROXIMAL CONVOLUTED TUBULE, THE LOOP OF HENLE, AND THE DISTAL
CONVOLUTED TUBULE.
5. MATERIALS FROM BLOOD ARE FORCED OUT OF THE GLOMERULUS AND INTO THE BOWMAN'S CAPSULE DURING A PROCESS
CALLED FILTRATION.
2. 2
6. THE MATERIALS THAT ARE FILTERED FROM THE BLOOD ARE KNOWN AS FILTRATE.
7. The Filtrate contains water, urea, glucose, salts, amino acids, and vitamins.
8. Plasma proteins, cells and platelets are too large to pass through the membrane; they remain in the blood.
REABSORPTION
1. Approx. 180 liters of filtrate pass from the blood into the collecting tubules each day. Not all of this is Excreted.
2. Most of the materials removed from the blood at Bowman's Capsule makes its way back into the blood by a process known as
REABSORPTION.
3. Approximately 99 percent of the water that is filtered into the Bowman's Capsule is Reabsorbed into the Blood.
4. Reabsorption proceeds along the Nephron's Tubular Parts.
5. Most Reabsorption occurs in the Proximal Tubule. In this region, about 75 percent of the Water in the Filtrate returns to the Capillaries by
Osmosis.
6. Glucose and minerals are returned to the blood by Active Transport.
7. Some additional reabsorption occurs in the distal Convoluted Tubule.
8. When the filtrate reaches the distal Convoluted Tubule, some substances pass from the blood into the filtrate through a process called
SECRETION. These substance include wastes and toxic materials. The pH of the blood is adjusted by Hydrogen Ions that are secreted from
the Blood into the Filtrate.
9. The material that remains in the distal convoluted tubule is called URINE, and consists of EXCESS salts, water, and urea.
10. The Urine becomes concentrated in a section of the Nephron called the LOOP OF HENLE, this area helps to conserve water and minimize
the volume of urine.
11. Urine from the collecting ducts flows through the Renal Pelvis and into a narrow tube called a URETER. A Ureter leads from each Kidney to
the URINARY BLADDER. Urine is collected in the Urinary Bladder and stored until it can be released through the URETHRA.
12. At least 500 mL (17 oz) of urine must be eliminated every day because this amount of fluid is needed to remove potential toxic materials
from the body to maintain homeostasis.
13. A normal adult eliminates from 1.5 L (1.6 qt) to 2.3 L (2.4 qt) of Urine a DAY, Depending on the amount of water taken in and the amount of
water lost through Respiration and Perspiration.
14. Purified Blood is returned to the Circulatory System through the Renal Vein.
CONTROL OF KIDNEY FUNCTION
1. The main proposes of our Kidneys is to maintain the CHEMICAL Composition of our Blood.
2. The Kidneys are the Master Chemist of the Blood Supply.
3. Two Important Things Controlled by the Kidneys are; CONCENTRATION OF WATER IN BLOOD; AND THE LEVEL OF SALT IN OUR
BLOOD.
4. Drink too much liquid, and the Kidneys will decrease the rate of reabsorption, excess water is sent to the Urinary Bladder to be excreted.
5. Eat Salty Foods and the Kidneys will respond by returning less salt to the Blood by Reabsorption. The excess is excreted in our Urine.
6. The Kidneys ensure that the composition of our Blood remains Constant.