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06 April Ashish Mahabal: Sensors in Astronomy A review of sensors and systems in observational astronomy
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The document discusses methods for improving the resolution of solar images degraded by atmospheric effects, including the shift and add (SAA) method and self-deconvolving data reconstruction algorithm (SeDDaRA). SAA involves shifting individual images to align a point spread function before adding them together to improve resolution, but it is difficult to apply to extended objects. The document proposes using self-deconvolution to determine the shifting widths for SAA, then applying SAA again using the self-deconvolved frame as the reference frame.
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This document summarizes a research paper that proposes a new method called SeDDaRA (Self-deconvolving Data Reconstruction Algorithm) to improve solar imaging using shift-and-add (SAA) techniques. SeDDaRA first applies self-deconvolution to enhance high-frequency components in speckle images. It then uses SAA, choosing the reference frame based on the image with the highest root-mean-square contrast (RMSC). Finally, a second SAA is performed using the first result as the reference frame, producing the final high-resolution image. Figures in the document show example input/output images from this new two-step SAA process with self-deconvolution.
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The document discusses methods for improving the resolution of solar images degraded by atmospheric effects, including the shift and add (SAA) method and self-deconvolving data reconstruction algorithm (SeDDaRA). SAA involves shifting individual images to align a point spread function before adding them together to improve resolution, but it is difficult to apply to extended objects. The document proposes using self-deconvolution to determine the shifting widths for SAA, then applying SAA again using the self-deconvolved frame as the reference frame.
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1) Emulate and speed up computation of 21cm power spectra from EoR parameters by 3 orders of magnitude.
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This document discusses the history and development of fluorescence detection techniques for ultra-high energy cosmic rays (UHECR). It proposes a new concept called the Fluorescence detector Array of Single-pixel Telescopes (FAST) project. FAST aims to develop an optimized and economical fluorescence detector array to observe UHECRs above 1019.5 eV over a large area. The document outlines the design of FAST stations and reports on an initial test using the EUSO-TA prototype that successfully detected laser pulses and UHECR signals. It concludes by discussing plans to construct a new full-scale FAST prototype and the potential for FAST to increase UHECR exposure and help resolve questions about their origin.
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3) Mount Abu was chosen as the site due to its high number of clear nights per year and altitude, making it suitable for gamma ray and infrared astronomy research.
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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.
Cytokines and their role in immune regulation.pptx
This presentation covers the content and information on "Cytokines " and their role in immune regulation .
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.
Phenomics assisted breeding in crop improvement
As the population is increasing and will reach about 9 billion upto 2050. Also due to climate change, it is difficult to meet the food requirement of such a large population. Facing the challenges presented by resource shortages, climate
change, and increasing global population, crop yield and quality need to be improved in a sustainable way over the coming decades. Genetic improvement by breeding is the best way to increase crop productivity. With the rapid progression of functional
genomics, an increasing number of crop genomes have been sequenced and dozens of genes influencing key agronomic traits have been identified. However, current genome sequence information has not been adequately exploited for understanding
the complex characteristics of multiple gene, owing to a lack of crop phenotypic data. Efficient, automatic, and accurate technologies and platforms that can capture phenotypic data that can
be linked to genomics information for crop improvement at all growth stages have become as important as genotyping. Thus,
high-throughput phenotyping has become the major bottleneck restricting crop breeding. Plant phenomics has been defined as the high-throughput, accurate acquisition and analysis of multi-dimensional phenotypes
during crop growing stages at the organism level, including the cell, tissue, organ, individual plant, plot, and field levels. With the rapid development of novel sensors, imaging technology,
and analysis methods, numerous infrastructure platforms have been developed for phenotyping.
SAR of Medicinal Chemistry 1st by dk.pdf
In this presentation include the prototype drug SAR on thus or with their examples .
Syllabus of Second Year B. Pharmacy
2019 PATTERN.
The debris of the ‘last major merger’ is dynamically young
The Milky Way’s (MW) inner stellar halo contains an [Fe/H]-rich component with highly eccentric orbits, often referred to as the
‘last major merger.’ Hypotheses for the origin of this component include Gaia-Sausage/Enceladus (GSE), where the progenitor
collided with the MW proto-disc 8–11 Gyr ago, and the Virgo Radial Merger (VRM), where the progenitor collided with the
MW disc within the last 3 Gyr. These two scenarios make different predictions about observable structure in local phase space,
because the morphology of debris depends on how long it has had to phase mix. The recently identified phase-space folds in Gaia
DR3 have positive caustic velocities, making them fundamentally different than the phase-mixed chevrons found in simulations
at late times. Roughly 20 per cent of the stars in the prograde local stellar halo are associated with the observed caustics. Based
on a simple phase-mixing model, the observed number of caustics are consistent with a merger that occurred 1–2 Gyr ago.
We also compare the observed phase-space distribution to FIRE-2 Latte simulations of GSE-like mergers, using a quantitative
measurement of phase mixing (2D causticality). The observed local phase-space distribution best matches the simulated data
1–2 Gyr after collision, and certainly not later than 3 Gyr. This is further evidence that the progenitor of the ‘last major merger’
did not collide with the MW proto-disc at early times, as is thought for the GSE, but instead collided with the MW disc within
the last few Gyr, consistent with the body of work surrounding the VRM.
The use of Nauplii and metanauplii artemia in aquaculture (brine shrimp).pptx
Although Artemia has been known to man for centuries, its use as a food for the culture of larval organisms apparently began only in the 1930s, when several investigators found that it made an excellent food for newly hatched fish larvae (Litvinenko et al., 2023). As aquaculture developed in the 1960s and ‘70s, the use of Artemia also became more widespread, due both to its convenience and to its nutritional value for larval organisms (Arenas-Pardo et al., 2024). The fact that Artemia dormant cysts can be stored for long periods in cans, and then used as an off-the-shelf food requiring only 24 h of incubation makes them the most convenient, least labor-intensive, live food available for aquaculture (Sorgeloos & Roubach, 2021). The nutritional value of Artemia, especially for marine organisms, is not constant, but varies both geographically and temporally. During the last decade, however, both the causes of Artemia nutritional variability and methods to improve poorquality Artemia have been identified (Loufi et al., 2024).
Brine shrimp (Artemia spp.) are used in marine aquaculture worldwide. Annually, more than 2,000 metric tons of dry cysts are used for cultivation of fish, crustacean, and shellfish larva. Brine shrimp are important to aquaculture because newly hatched brine shrimp nauplii (larvae) provide a food source for many fish fry (Mozanzadeh et al., 2021). Culture and harvesting of brine shrimp eggs represents another aspect of the aquaculture industry. Nauplii and metanauplii of Artemia, commonly known as brine shrimp, play a crucial role in aquaculture due to their nutritional value and suitability as live feed for many aquatic species, particularly in larval stages (Sorgeloos & Roubach, 2021).
原版制作(carleton毕业证书)卡尔顿大学毕业证硕士文凭原版一模一样
原版纸张【微信：741003700 】【(carleton毕业证书)卡尔顿大学毕业证】【微信：741003700 】学位证，留信认证（真实可查，永久存档）offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
本公司拥有海外各大学样板无数，能完美还原海外各大学 Bachelor Diploma degree, Master Degree Diploma
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微741003700
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
Remote Sensing and Computational, Evolutionary, Supercomputing, and Intellige...
Remote Sensing and Computational, Evolutionary, Supercomputing, and Intellige...University of Maribor
Slides from talk:
Aleš Zamuda: Remote Sensing and Computational, Evolutionary, Supercomputing, and Intelligent Systems.
11th International Conference on Electrical, Electronics and Computer Engineering (IcETRAN), Niš, 3-6 June 2024
Inter-Society Networking Panel GRSS/MTT-S/CIS Panel Session: Promoting Connection and Cooperation
https://www.etran.rs/2024/en/home-english/如何办理(uvic毕业证书)维多利亚大学毕业证本科学位证书原版一模一样
原版纸张【微信：741003700 】【(uvic毕业证书)维多利亚大学毕业证】【微信：741003700 】学位证，留信认证（真实可查，永久存档）offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
本公司拥有海外各大学样板无数，能完美还原海外各大学 Bachelor Diploma degree, Master Degree Diploma
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微741003700
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
Bob Reedy - Nitrate in Texas Groundwater.pdf
Presented at June 6-7 Texas Alliance of Groundwater Districts Business Meeting
Thornton ESPP slides UK WW Network 4_6_24.pdf
ESPP presentation to EU Waste Water Network, 4th June 2024 “EU policies driving nutrient removal and recycling
and the revised UWWTD (Urban Waste Water Treatment Directive)”
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.
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06 ashish mahabal bse1
- 1. BigSkyEarth I: Sensors in Astronomy Ashish Mahabal Center for Data-Driven Discovery, Caltech Apr 5, 2016
- 2. Ashish Mahabal - BSE I Sundial and friends Samrat Yantra at IUCAA 3
- 3. Ashish Mahabal - BSE I Ignoring Galileo to embracing Gravitational-Waves 4
- 4. Ashish Mahabal - BSE I The EM spectrum 5
- 5. Ashish Mahabal - BSE I Photographic plates • Silver salt emulsions - light sensitive • Same principle as older (pre-digital cameras) but on glass plates [palomar story] • large collections exist (Harvard computers) [great for archival searches of variables - DASCH] 6
- 6. Ashish Mahabal - BSE I Carina Nebula on a 1951 plate by Karl Heinze held by Thurburn Baker (ADAP). 38cm x 38cm 7
- 7. Ashish Mahabal - BSE I Photomultiplier tubes • 1% photometry (0.01 mag accuracy) • variable stars • set of electrodes multiply number of electrons through higher voltages: gain of a million • resolution not great • used extensively in cosmic-ray and neutrino detectors [super-kamiokande has 11200 50cm tubes looking for Cerenkov radiation] 8
- 8. Ashish Mahabal - BSE I Charge-Coupled Devices (CCDs) • Workhorse of modern-day astronomy • Typically a 2D set of light-sensitive pixels (picture elements) • photons -> electrons • CSS 10k x 10k chip 9
- 9. Ashish Mahabal - BSE I features • Great dynamic range (twice that of CMOS) [but is it good enough? problems with bright objects] • Great quantum efficiency (can reach 95%) • compare solar cells • Good spectral range • Needs to be cooled for astronomical purposes (LN2) [Orion challenge] • a bit slow 10
- 10. Ashish Mahabal - BSE I PQ CCDs 112-CCD, 161 Mpix camera • multiple amplifiers for readouts (either faster on same chip, or multiple chips): crosstalk [PQ] • gaps between adjacent CCDs to accomodate attendant electronics: leads to more complex cadence 11
- 11. Ashish Mahabal - BSE I CRTS-II • Same telescopes • Bigger cameras and FOVs: MLS 1.5m, 1.2 -> 5 sq. deg CSS 0.7m, 8.2 -> 19 sq. deg Spectral Instruments camera with Imager Labs thinned 10.5K2 CCD. Upgrades funded and underway. 8/27/14 51Ashish Mahabal 12
- 12. Ashish Mahabal - BSE I CCD pipeline • Bias subtraction (ambient noise) • Flat fielding (detector response - per pixel) • cosmic ray removal (grazing incidences) Big Picture at Griffith 13
- 13. Ashish Mahabal - BSE I spectroscopes • filters are low-res spectrographs • to capture emission and absorption lines, we need real spectroscopes • series of mirrors - fraction refracts; different angle depending on wavelength • limited resolution • gelatin and Bragg’s diffraction can be used for better • not below 3000 Angstrom 14
- 14. Ashish Mahabal - BSE I DBSP at palomar • two arms • wider wavelength coverage at better resolution • separate gratings 15
- 15. Ashish Mahabal - BSE I Spectroscopy pipeline • 1d response through polynomial fits • arcs for wavelength calibration • spectrophotometric standards for flux calibration • selection of appropriate wavlength range for best science (e.g H-alpha or L-alpha) 16
- 16. Ashish Mahabal - BSE I integral field units • SDSS example • hundreds of thousands of quasar spectra17
- 17. Ashish Mahabal - BSE I NIR spectroscopy • more challenging - water vapour and CO2 absorption • keck spectrographs (NIRSPEC, MOSFIRE) • above the atmosphere 18
- 18. Ashish Mahabal - BSE I radio detectors • large wavelengths - so larger receivers (lambda/d) • can have bigger gaps (mesh) • arrays for Fourier domain coverage • SKA and path-finders NEP uv coverage 19
- 19. Ashish Mahabal - BSE I subMM detectors • molecular clouds • Star formation: H2, CO • dark clouds: Frozen CO, N • water vapor limitation (dry/cool/stable site needed) • Mauna Kea, Chile, Hanle, South Pole, (Greenland) Balloons (BLAST), Stratosphere (SOFIA) LDN 1768 20
- 20. Ashish Mahabal - BSE I X-ray detectors • focussing: higher resolution/sensitivity • collimating: coded masks, large FOV Swift: GRB finder 21
- 21. Ashish Mahabal - BSE I Polarimeters • To measure polarized light BL Lac with RoboPol 22
- 22. Ashish Mahabal - BSE I Gravitational-wave detectors 23
- 23. Ashish Mahabal - BSE I Summary • Wide variety of sensors • Immense variety of science • Many recent/ongoing innovations • Better/vaster data accumulating 24