1.homeostasis (1)
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Homeostasis refers to the ability of living organisms to regulate their internal environment to maintain stable, optimal conditions. The concept was first proposed by Claude Bernard in 1865. Homeostasis involves various control systems that allow organisms to adapt to changes in external factors like temperature, water, and solutes. These systems, both physical and living, work to keep the internal environment within a narrow range despite fluctuations outside. This protects organisms from harm and allows them to function properly.
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The theory of mica sheets proposed that the spaces between thin mica layers provided conditions for the first biomolecules to arise and evolve, similar to primitive cells. Heating and cooling could drive chemical reactions.
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bioRxiv 2022.07.02.498577; doi: https://doi.org/10.1101/2022.07.02.498577
Sexuality - Issues, Attitude and Behaviour - Applied Social Psychology - Psyc...
A proprietary approach developed by bringing together the best of learning theories from Psychology, design principles from the world of visualization, and pedagogical methods from over a decade of training experience, that enables you to: Learn better, faster!
8.Isolation of pure cultures and preservation of cultures.pdf
Isolation of pure culture, its various method.
Compexometric titration/Chelatorphy titration/chelating titration
Classification
Metal ion ion indicators
Masking and demasking reagents
Estimation of Magnisium sulphate
Calcium gluconate
Complexometric Titration/ chelatometry titration/chelating titration, introduction, Types-
1.Direct Titration
2.Back Titration
3.Replacement Titration
4.Indirect Titration
Masking agent, Demasking agents
formation of complex
comparition between masking and demasking agents,
Indicators/Metal ion indicators/ Metallochromic indicators/pM indicators,
Visual Technique,PM indicators (metallochromic), Indicators of pH, Redox Indicators
Instrumental Techniques-Photometry
Potentiometry
Miscellaneous methods.
Complex titration with EDTA.
EWOCS-I: The catalog of X-ray sources in Westerlund 1 from the Extended Weste...
Context. With a mass exceeding several 104 M⊙ and a rich and dense population of massive stars, supermassive young star clusters
represent the most massive star-forming environment that is dominated by the feedback from massive stars and gravitational interactions
among stars.
Aims. In this paper we present the Extended Westerlund 1 and 2 Open Clusters Survey (EWOCS) project, which aims to investigate
the influence of the starburst environment on the formation of stars and planets, and on the evolution of both low and high mass stars.
The primary targets of this project are Westerlund 1 and 2, the closest supermassive star clusters to the Sun.
Methods. The project is based primarily on recent observations conducted with the Chandra and JWST observatories. Specifically,
the Chandra survey of Westerlund 1 consists of 36 new ACIS-I observations, nearly co-pointed, for a total exposure time of 1 Msec.
Additionally, we included 8 archival Chandra/ACIS-S observations. This paper presents the resulting catalog of X-ray sources within
and around Westerlund 1. Sources were detected by combining various existing methods, and photon extraction and source validation
were carried out using the ACIS-Extract software.
Results. The EWOCS X-ray catalog comprises 5963 validated sources out of the 9420 initially provided to ACIS-Extract, reaching a
photon flux threshold of approximately 2 × 10−8 photons cm−2
s
−1
. The X-ray sources exhibit a highly concentrated spatial distribution,
with 1075 sources located within the central 1 arcmin. We have successfully detected X-ray emissions from 126 out of the 166 known
massive stars of the cluster, and we have collected over 71 000 photons from the magnetar CXO J164710.20-455217.
Farming systems analysis: what have we learnt?.pptx
Presentation given at the official farewell of Prof Ken Gillet at Wageningen on 13 June 2024
ESR spectroscopy in liquid food and beverages.pptx
With increasing population, people need to rely on packaged food stuffs. Packaging of food materials requires the preservation of food. There are various methods for the treatment of food to preserve them and irradiation treatment of food is one of them. It is the most common and the most harmless method for the food preservation as it does not alter the necessary micronutrients of food materials. Although irradiated food doesn’t cause any harm to the human health but still the quality assessment of food is required to provide consumers with necessary information about the food. ESR spectroscopy is the most sophisticated way to investigate the quality of the food and the free radicals induced during the processing of the food. ESR spin trapping technique is useful for the detection of highly unstable radicals in the food. The antioxidant capability of liquid food and beverages in mainly performed by spin trapping technique.
Travis Hills of MN is Making Clean Water Accessible to All Through High Flux ...
By harnessing the power of High Flux Vacuum Membrane Distillation, Travis Hills from MN envisions a future where clean and safe drinking water is accessible to all, regardless of geographical location or economic status.
Micronuclei test.M.sc.zoology.fisheries.
Current Ms word generated power point presentation covers major details about the micronuclei test. It's significance and assays to conduct it. It is used to detect the micronuclei formation inside the cells of nearly every multicellular organism. It's formation takes place during chromosomal sepration at metaphase.
The binding of cosmological structures by massless topological defects
Assuming spherical symmetry and weak field, it is shown that if one solves the Poisson equation or the Einstein field
equations sourced by a topological defect, i.e. a singularity of a very specific form, the result is a localized gravitational
field capable of driving flat rotation (i.e. Keplerian circular orbits at a constant speed for all radii) of test masses on a thin
spherical shell without any underlying mass. Moreover, a large-scale structure which exploits this solution by assembling
concentrically a number of such topological defects can establish a flat stellar or galactic rotation curve, and can also deflect
light in the same manner as an equipotential (isothermal) sphere. Thus, the need for dark matter or modified gravity theory is
mitigated, at least in part.
(June 12, 2024) Webinar: Development of PET theranostics targeting the molecu...
(June 12, 2024) Webinar: Development of PET theranostics targeting the molecu...Scintica Instrumentation
Targeting Hsp90 and its pathogen Orthologs with Tethered Inhibitors as a Diagnostic and Therapeutic Strategy for cancer and infectious diseases with Dr. Timothy Haystead.waterlessdyeingtechnolgyusing carbon dioxide chemicalspdf
The technology uses reclaimed CO₂ as the dyeing medium in a closed loop process. When pressurized, CO₂ becomes supercritical (SC-CO₂). In this state CO₂ has a very high solvent power, allowing the dye to dissolve easily.
Gadgets for management of stored product pests_Dr.UPR.pdf
Insectsplayamajorroleinthedeteriorationoffoodgrainscausingbothquantitativeandqualitativelosses
Wellprovedthatnogranariescanbefilledwithgrainswithoutinsectsastheharvestedproducecontainegg(or)larvae(or)pupae(or)adultinsectinthembecauseoffieldcarryoverinfestationwhichcannotbeavoidedindevelopingcountrieslikeIndia
Simpletechnologiesfortimelydetectionofinsectsinthestoredproduceandtherebyplantimelycontrolmeasures
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GBSN - Biochemistry (Unit 6) Chemistry of Proteins
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Juaristi, Jon. - El canon espanol. El legado de la cultura española a la civi...
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11.1 Role of physical biological in deterioration of grains.pdf
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The cost of acquiring information by natural selection
The cost of acquiring information by natural selection
Basics of crystallography, crystal systems, classes and different forms
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Sexuality - Issues, Attitude and Behaviour - Applied Social Psychology - Psyc...
Sexuality - Issues, Attitude and Behaviour - Applied Social Psychology - Psyc...
8.Isolation of pure cultures and preservation of cultures.pdf
8.Isolation of pure cultures and preservation of cultures.pdf
Compexometric titration/Chelatorphy titration/chelating titration
Compexometric titration/Chelatorphy titration/chelating titration
EWOCS-I: The catalog of X-ray sources in Westerlund 1 from the Extended Weste...
EWOCS-I: The catalog of X-ray sources in Westerlund 1 from the Extended Weste...
Farming systems analysis: what have we learnt?.pptx
Farming systems analysis: what have we learnt?.pptx
ESR spectroscopy in liquid food and beverages.pptx
ESR spectroscopy in liquid food and beverages.pptx
Travis Hills of MN is Making Clean Water Accessible to All Through High Flux ...
Travis Hills of MN is Making Clean Water Accessible to All Through High Flux ...
The binding of cosmological structures by massless topological defects
The binding of cosmological structures by massless topological defects
(June 12, 2024) Webinar: Development of PET theranostics targeting the molecu...
(June 12, 2024) Webinar: Development of PET theranostics targeting the molecu...
waterlessdyeingtechnolgyusing carbon dioxide chemicalspdf
waterlessdyeingtechnolgyusing carbon dioxide chemicalspdf
Gadgets for management of stored product pests_Dr.UPR.pdf
Gadgets for management of stored product pests_Dr.UPR.pdf
1.homeostasis (1)
- 1. PUNJAB GROUP OF COLLEGE OF BWP
- 2. Prof. Rabia Ramzan Lecture 1 Chapter 15 Homeostasis
- 3. Discovery • The concept of homeostasis was first given by French Physiologist Claude Bernard in 1865. • The word Homeostasis was coined by Walter Bradford Cannon.
- 4. Types of Environment External environment Internal environment
- 5. 1. External Environment 2. Internal Environment
- 6. External Environment Internal Environment Definition Environment that surround organism Factor of External environment Water Light Temperature Air Fluctuate continuously Example temperature in winter summer day night Definition Environment inside organism Factor most susceptible Solute Water temperature Organism maintain enternal environment Keep at narrow range
- 7. HOMEOSTASIS: • DEFINITION: The Protection of internal environment form the harms of fluctuations in external environment
- 8. Most susceptible component of enternal environment in organisms 1. Solute 2. Water 3. temperature
- 9. 1)OSMOREGULATION: • DEFINITION: The maintenance of water and salts in the body is called Thermoregulation. • The mechanism regulates the solute between the internal environment and external environment.
- 10. 2)THERMOREGULATION: • The maintenance of internal body temperature with in tolerable range is called Thermoregulation.
- 11. EXCRETION: • The mechanism of elimination of nitrogenous wastes from the body is called excretion. • The adaptation of this mechanism also depends on the availability of water
- 12. Control at organism level Extracellular Environment Intracellular Environment Environment with in cellEnvironment surround cell Example Vascular and interstitial fluid
- 13. SIGNIFICANCE OF HOMEOSTASIS: • The external Environment always changes but the Organism make adjustment with various control system to keep its internal fluctuations with in narrow range.
- 14. SIGNIFICANCE OF HOMEOSTASIS: • The homeostasis protect internal environment from the harms of fluctuations in external Environment.
- 16. NATURE OF CONTROLLING SYSTEM: • Control systems are used for different homeostatic functions. • TYPES OF CONTROL SYSTEM: PHYSICAL CONTROL SYSTEM. LIVING CONTROL SYSTEM. Living control system work exactly on mechanism of Physical control system.
- 17. PHYSICAL CONTROL SYSTEM: • TEMPERATURE CONTROL SYSTEM:
- 18. PHYSICAL CONTROL SYSTEM: • SWITCHING ON: • Cooling System incase of increase of temperature from set point. • KEY POINTS: • SENSOR RECEPTOR • THERMOSTAT CONTROL CENTRE • Compressor EFFECTOR