GBSN - Microbiology (Lab 2) Compound Microscope

•Download as PPTX, PDF•

0 likes•41 views

Areesha Ahmad

Compound Microscope

Science

Microbiology Lab
Compound Light Microscope
by,
Miss Areesha Ahmad
Lecturer
B.Sc (H), M.Sc, M.Phil and Ph.D scholar (Microbiology)

GBSN - Microbiology (Lab 2) Compound Microscope

Insectsplayamajorroleinthedeteriorationoffoodgrainscausingbothquantitativeandqualitativelosses Wellprovedthatnogranariescanbefilledwithgrainswithoutinsectsastheharvestedproducecontainegg(or)larvae(or)pupae(or)adultinsectinthembecauseoffieldcarryoverinfestationwhichcannotbeavoidedindevelopingcountrieslikeIndia Simpletechnologiesfortimelydetectionofinsectsinthestoredproduceandtherebyplantimelycontrolmeasures

The cost of acquiring information by natural selection

Carl Bergstrom

This is a short talk that I gave at the Banff International Research Station workshop on Modeling and Theory in Population Biology. The idea is to try to understand how the burden of natural selection relates to the amount of information that selection puts into the genome. It's based on the first part of this research paper: The cost of information acquisition by natural selection Ryan Seamus McGee, Olivia Kosterlitz, Artem Kaznatcheev, Benjamin Kerr, Carl T. Bergstrom bioRxiv 2022.07.02.498577; doi: https://doi.org/10.1101/2022.07.02.498577

Recently uploaded

Gadgets for management of stored product pests_Dr.UPR.pdf

PirithiRaju

The cost of acquiring information by natural selection

Carl Bergstrom

Compositions of iron-meteorite parent bodies constrainthe structure of the pr...

Sérgio Sacani

Magmatic iron-meteorite parent bodies are the earliest planetesimals in the Solar System,and they preserve information about conditions and planet-forming processes in thesolar nebula. In this study, we include comprehensive elemental compositions andfractional-crystallization modeling for iron meteorites from the cores of five differenti-ated asteroids from the inner Solar System. Together with previous results of metalliccores from the outer Solar System, we conclude that asteroidal cores from the outerSolar System have smaller sizes, elevated siderophile-element abundances, and simplercrystallization processes than those from the inner Solar System. These differences arerelated to the formation locations of the parent asteroids because the solar protoplane-tary disk varied in redox conditions, elemental distributions, and dynamics at differentheliocentric distances. Using highly siderophile-element data from iron meteorites, wereconstruct the distribution of calcium-aluminum-rich inclusions (CAIs) across theprotoplanetary disk within the first million years of Solar-System history. CAIs, the firstsolids to condense in the Solar System, formed close to the Sun. They were, however,concentrated within the outer disk and depleted within the inner disk. Future modelsof the structure and evolution of the protoplanetary disk should account for this dis-tribution pattern of CAIs.

Clinical periodontology and implant dentistry 2003.pdf

RAYMUNDONAVARROCORON

Anti-Universe And Emergent Gravity and the Dark Universe

Sérgio Sacani

Recent theoretical progress indicates that spacetime and gravity emerge together from the entanglement structure of an underlying microscopic theory. These ideas are best understood in Anti-de Sitter space, where they rely on the area law for entanglement entropy. The extension to de Sitter space requires taking into account the entropy and temperature associated with the cosmological horizon. Using insights from string theory, black hole physics and quantum information theory we argue that the positive dark energy leads to a thermal volume law contribution to the entropy that overtakes the area law precisely at the cosmological horizon. Due to the competition between area and volume law entanglement the microscopic de Sitter states do not thermalise at sub-Hubble scales: they exhibit memory effects in the form of an entropy displacement caused by matter. The emergent laws of gravity contain an additional ‘dark’ gravitational force describing the ‘elastic’ response due to the entropy displacement. We derive an estimate of the strength of this extra force in terms of the baryonic mass, Newton’s constant and the Hubble acceleration scale a0 = cH0, and provide evidence for the fact that this additional ‘dark gravity force’ explains the observed phenomena in galaxies and clusters currently attributed to dark matter.

LEARNING TO LIVE WITH LAWS OF MOTION .pptx

yourprojectpartner05

JAMES WEBB STUDY THE MASSIVE BLACK HOLE SEEDS

Sérgio Sacani

The pathway(s) to seeding the massive black holes (MBHs) that exist at the heart of galaxies in the present and distant Universe remains an unsolved problem. Here we categorise, describe and quantitatively discuss the formation pathways of both light and heavy seeds. We emphasise that the most recent computational models suggest that rather than a bimodal-like mass spectrum between light and heavy seeds with light at one end and heavy at the other that instead a continuum exists. Light seeds being more ubiquitous and the heavier seeds becoming less and less abundant due the rarer environmental conditions required for their formation. We therefore examine the different mechanisms that give rise to different seed mass spectrums. We show how and why the mechanisms that produce the heaviest seeds are also among the rarest events in the Universe and are hence extremely unlikely to be the seeds for the vast majority of the MBH population. We quantify, within the limits of the current large uncertainties in the seeding processes, the expected number densities of the seed mass spectrum. We argue that light seeds must be at least 103 to 105 times more numerous than heavy seeds to explain the MBH population as a whole. Based on our current understanding of the seed population this makes heavy seeds (Mseed > 103 M⊙) a significantly more likely pathway given that heavy seeds have an abundance pattern than is close to and likely in excess of 10−4 compared to light seeds. Finally, we examine the current state-of-the-art in numerical calculations and recent observations and plot a path forward for near-future advances in both domains.

Evidence of Jet Activity from the Secondary Black Hole in the OJ 287 Binary S...

Sérgio Sacani

Wereport the study of a huge optical intraday flare on 2021 November 12 at 2 a.m. UT in the blazar OJ287. In the binary black hole model, it is associated with an impact of the secondary black hole on the accretion disk of the primary. Our multifrequency observing campaign was set up to search for such a signature of the impact based on a prediction made 8 yr earlier. The first I-band results of the flare have already been reported by Kishore et al. (2024). Here we combine these data with our monitoring in the R-band. There is a big change in the R–I spectral index by 1.0 ±0.1 between the normal background and the flare, suggesting a new component of radiation. The polarization variation during the rise of the flare suggests the same. The limits on the source size place it most reasonably in the jet of the secondary BH. We then ask why we have not seen this phenomenon before. We show that OJ287 was never before observed with sufficient sensitivity on the night when the flare should have happened according to the binary model. We also study the probability that this flare is just an oversized example of intraday variability using the Krakow data set of intense monitoring between 2015 and 2023. We find that the occurrence of a flare of this size and rapidity is unlikely. In machine-readable Tables 1 and 2, we give the full orbit-linked historical light curve of OJ287 as well as the dense monitoring sample of Krakow.

Male reproduction physiology by Suyash Garg .pptx

suyashempire

Introduction_Ch_01_Biotech Biotechnology course .pptx

QusayMaghayerh

gastroretentive drug delivery system-PPT.pptx

Shekar Boddu

Immunotherapy presentation from clinical immunology

VetriVel359477

Alternate Wetting and Drying - Climate Smart Agriculture

International Food Policy Research Institute- South Asia Office

cathode ray oscilloscope and its applications

sandertein

11.1 Role of physical biological in deterioration of grains.pdf

PirithiRaju

Quality assurance B.pharm 6th semester BP606T UNIT 5

vimalveerammal

Sexuality - Issues, Attitude and Behaviour - Applied Social Psychology - Psyc...

PsychoTech Services

AJAY KUMAR NIET GreNo Guava Project File.pdf

AJAY KUMAR

Injection: Risks and challenges - Injection of CO2 into geological rock forma...

Oeko-Institut

Mechanisms and Applications of Antiviral Neutralizing Antibodies - Creative B...

Creative-Biolabs

Neutralizing antibodies, pivotal in immune defense, specifically bind and inhibit viral pathogens, thereby playing a crucial role in protecting against and mitigating infectious diseases. In this slide, we will introduce what antibodies and neutralizing antibodies are, the production and regulation of neutralizing antibodies, their mechanisms of action, classification and applications, as well as the challenges they face.

Recently uploaded (20)

Gadgets for management of stored product pests_Dr.UPR.pdf

The cost of acquiring information by natural selection

Compositions of iron-meteorite parent bodies constrainthe structure of the pr...

Clinical periodontology and implant dentistry 2003.pdf

Anti-Universe And Emergent Gravity and the Dark Universe

LEARNING TO LIVE WITH LAWS OF MOTION .pptx

JAMES WEBB STUDY THE MASSIVE BLACK HOLE SEEDS

Evidence of Jet Activity from the Secondary Black Hole in the OJ 287 Binary S...

Male reproduction physiology by Suyash Garg .pptx

Introduction_Ch_01_Biotech Biotechnology course .pptx

gastroretentive drug delivery system-PPT.pptx

Immunotherapy presentation from clinical immunology

Alternate Wetting and Drying - Climate Smart Agriculture

cathode ray oscilloscope and its applications

11.1 Role of physical biological in deterioration of grains.pdf

Quality assurance B.pharm 6th semester BP606T UNIT 5

Sexuality - Issues, Attitude and Behaviour - Applied Social Psychology - Psyc...

AJAY KUMAR NIET GreNo Guava Project File.pdf

Injection: Risks and challenges - Injection of CO2 into geological rock forma...

Mechanisms and Applications of Antiviral Neutralizing Antibodies - Creative B...