Rays Enserv is installing a waste-to-energy plant in Punjab, India that uses supercritical thermal treatment technology to convert end-of-life plastic waste into synthetic fuel and syngas. The 15 tonne per day plant is at an advanced stage of installation and commissioning and is expected to complete trial runs in the first quarter of 2017. Rays Enserv was established in 2014 and uses a unique, indigenous technology to depolymerize plastic waste into usable fuel, helping address waste management and energy issues while generating jobs.
The document outlines the key steps in planning and scheduling an outage from 12 months before to 1 week before. It details activities 12 months before such as conception and securing long lead items. 6 months before activities include picking lead people for zones. 3-4 months before work packages and scopes are finalized, vendors are selected, and bids are circulated. 2 months before a work freeze occurs, detailed and micro scheduling is completed, and meetings are held. The final 2 weeks include setting up the outage site with equipment and moving spares into position, while the last week includes staging scaffolding.
The document discusses how emotions play a big role in addiction and the powerful connection between emotion and addiction. It describes how drugs of abuse hijack the brain's reward and punishment system, confusing the drug reward with the body's own chemical rewards. Certain brain regions like the prefrontal cortex and limbic structures help regulate emotion. Specific drugs like alcohol, nicotine, methamphetamine, and marijuana impact the brain and neurotransmitters like dopamine in ways that influence emotions, feelings of pleasure, and memory formation, contributing to drug addiction.
This document discusses an outdoor technology project focused on caving at the Waitomo Caves in New Zealand. It lists several travel and tourism related websites for the Waitomo Caves as well as blogs about caving and outdoor adventures. The document was written by Ilicia Martin as part of a school project for the Walker School.
This document provides information about social workers in the addiction field. It discusses their job duties, which include assessing and treating individuals with substance abuse problems through therapies and other interventions. It outlines typical education requirements and important skills like active listening, speaking, and social perceptiveness. Common job titles are also listed, such as addiction counselor, behavioral health case manager, and substance abuse clinician. The document then examines skills and abilities for addiction social work jobs and provides statistics on employment and median pay from the Bureau of Labor Statistics. Treatment approaches used include cognitive behavioral therapy, dialectical behavioral therapy, and motivational interviewing. Social workers play a key role in connecting clients with resources and supporting them through barriers to treatment.
Rays Enserv is installing a waste-to-energy plant in Punjab, India that uses supercritical thermal treatment technology to convert end-of-life plastic waste into synthetic fuel and syngas. The 15 tonne per day plant is at an advanced stage of installation and commissioning and is expected to complete trial runs in the first quarter of 2017. Rays Enserv was established in 2014 and uses a unique, indigenous technology to depolymerize plastic waste into usable fuel, helping address waste management and energy issues while generating jobs.
The document outlines the key steps in planning and scheduling an outage from 12 months before to 1 week before. It details activities 12 months before such as conception and securing long lead items. 6 months before activities include picking lead people for zones. 3-4 months before work packages and scopes are finalized, vendors are selected, and bids are circulated. 2 months before a work freeze occurs, detailed and micro scheduling is completed, and meetings are held. The final 2 weeks include setting up the outage site with equipment and moving spares into position, while the last week includes staging scaffolding.
The document discusses how emotions play a big role in addiction and the powerful connection between emotion and addiction. It describes how drugs of abuse hijack the brain's reward and punishment system, confusing the drug reward with the body's own chemical rewards. Certain brain regions like the prefrontal cortex and limbic structures help regulate emotion. Specific drugs like alcohol, nicotine, methamphetamine, and marijuana impact the brain and neurotransmitters like dopamine in ways that influence emotions, feelings of pleasure, and memory formation, contributing to drug addiction.
This document discusses an outdoor technology project focused on caving at the Waitomo Caves in New Zealand. It lists several travel and tourism related websites for the Waitomo Caves as well as blogs about caving and outdoor adventures. The document was written by Ilicia Martin as part of a school project for the Walker School.
This document provides information about social workers in the addiction field. It discusses their job duties, which include assessing and treating individuals with substance abuse problems through therapies and other interventions. It outlines typical education requirements and important skills like active listening, speaking, and social perceptiveness. Common job titles are also listed, such as addiction counselor, behavioral health case manager, and substance abuse clinician. The document then examines skills and abilities for addiction social work jobs and provides statistics on employment and median pay from the Bureau of Labor Statistics. Treatment approaches used include cognitive behavioral therapy, dialectical behavioral therapy, and motivational interviewing. Social workers play a key role in connecting clients with resources and supporting them through barriers to treatment.
Ch 1 ppt Setting the Stage Multidimensional Approach of Generalist PracticeAriel. Christopher, BSW
This chapter introduces the multidimensional approach in social work and the planned change process. It discusses that social workers need an understanding of human behavior that integrates the personal, environmental, and life course dimensions. These dimensions interact with and affect each other. The chapter then provides an overview of these dimensions, including biological, psychological, social, cultural, and how social locations shape people's perspectives. It also discusses the importance of theory in helping to organize and interpret situations, and factors to consider when evaluating theory.
Educating social workers to establish well formed goals van voorhis et alAriel. Christopher, BSW
This document discusses the importance of establishing well-formed goals in social work practice and outlines an educational approach for teaching social work students how to do so. It defines key criteria for effective goals, known by the acronym MAPS (measurable, attainable, positive, specific). The authors developed several classroom exercises to engage students in applying these criteria when setting goals for clients, evaluating existing goal statements, and distinguishing goals from interventions. The exercises are meant to prepare students to establish goals that meet client and agency expectations for measurable outcomes.
The document discusses various topics related to child maltreatment and protective services, including definitions of different types of child abuse, indicators of abuse, and statistics on perpetrators. It also describes the generalist intervention model for assessment, planning, implementation, and evaluation of services for families where child maltreatment occurs. Crisis intervention approaches are outlined as well as working with diverse groups like older adults, immigrants, and those struggling with substance abuse issues. Empowerment strategies are discussed at the individual, family, organization, and community levels.
The document outlines the 8 steps in the planning process for generalist social work practice: 1) work with clients, 2) prioritize problems, 3) evaluate levels of intervention, 4) assess client strengths, 5) establish goals, 6) specify objectives, 7) specify action steps, and 8) formalize a contract. It notes the process involves working with clients to prioritize problems, select intervention strategies, establish measurable goals and objectives, and create a formal or informal contract outlining the agreed upon actions and expectations. Considerations for planning in mezzo and macro practice are also briefly discussed.
This document discusses engagement and assessment in social work practice. It covers greeting clients, discussing services, completing paperwork during engagement. For assessment, it describes defining problems, prioritizing issues, identifying client strengths, and using tools like the DSM. Assessment is discussed at the micro, mezzo, and macro levels including for individuals, families, groups, and communities. Factors like motivation, communication, and diversity are addressed in group and community assessments.
This document discusses skills for working with groups, including conceptual frameworks around group dynamics, functions, roles, and decision-making patterns. It covers benefits of groups like mutual assistance and goal achievement. Key group types are task groups like committees and treatment groups like therapy groups. Professional roles in groups include brokers, mediators, and facilitators. Micro skills discussed include conflict resolution, team building, and using structure.
The document provides an overview of cultural competence for social workers. It introduces the core values of the social work profession including service, social justice, dignity and worth of individuals. It defines key concepts such as culture, prejudice, discrimination, and stereotyping. It discusses theories related to these concepts. It also presents frameworks to support culturally competent practice including strengths perspective, person-in-environment, empowerment model, and theories of multicultural competence, feminism, and intersectionality. The document emphasizes that social workers must understand and address issues of power, oppression, and discrimination in their work with diverse populations.
This document provides an overview of personality disorders according to the DSM-IV-TR. It discusses what personality and personality disorders are, and how personality disorders are classified into three clusters: odd/eccentric, dramatic/emotional/erratic, and anxious/inhibited. Specific personality disorders like paranoid, antisocial, and borderline are described. Issues with reliably diagnosing personality disorders and problems with the DSM categories are also reviewed.
This document summarizes key concepts from Chapter 13 of the psychology textbook. It covers topics related to social perception, social influence, and social relations. Some main points include how social perception involves making attributions about others' behaviors and the fundamental attribution error. It also discusses conformity to group norms, obedience to authority, and factors that influence persuasion and attitude change. Group processes like social facilitation, social loafing, and groupthink are summarized. The chapter concludes with sections on aggression, altruism, and the bystander effect.
A strengths perspective in working with an adolescent with self cutting beha...Ariel. Christopher, BSW
This document describes using a strengths perspective approach when working with an adolescent who engages in self-cutting behaviors. It contrasts this approach with a disease model orientation. A case study of a 14-year-old girl named Carol demonstrates how a disease model focuses on diagnosing her behaviors as pathological, labeling her with a diagnosis, and viewing medication as the primary treatment approach. In contrast, a strengths perspective aims to understand the meanings and needs behind symptoms, identify the client's abilities, and facilitate communication and social support networks to help the client develop alternative coping strategies to self-cutting.
This document discusses micro practice skills for working with individuals, focusing on interviewing skills. It covers establishing rapport through verbal and nonverbal communication like eye contact and empathy. Techniques for conducting an interview are explained, including asking open-ended questions, reflecting, clarifying and summarizing. Challenges like dealing with cultural diversity, using silence appropriately, confronting clients respectfully and handling involuntary clients are addressed. The importance of these micro skills in social work is emphasized.
This document discusses motivation and the stages of change model as it relates to addiction recovery and relapse prevention. It describes the five stages of change: precontemplation, contemplation, preparation, action, and maintenance. Relapse is presented as being related to motivation and the stages of change. Urge surfing and identifying triggers are taught as skills to manage cravings and prevent relapse. The relationship between emotion, motivation, and challenges in making changes is explored.
This document outlines the agenda for a women's recovery empowerment meeting. It includes activities like quiet time, check-ins where participants share their name, feelings, and last drug/alcohol use. It also involves decorating binders, telling life stories using a lifeline as a reference, and creating clean copies of stories to add to over time. The overall goal is to empower and support women through sharing experiences and creative self-expression.
Prescription drug abuse, especially of stimulants used to treat conditions like ADHD, has been rising in recent years according to national surveys. Stimulants work by increasing levels of dopamine in the brain, which can produce feelings of pleasure and reward. Dopamine plays a key role in functions like cognition, motivation, and mood. Commonly abused prescription stimulants include Adderall and Ritalin, which are normally prescribed to treat ADHD. While they can improve focus and energy when taken properly, abusing these drugs by crushing them and snorting or injecting can have serious unwanted side effects and lead to addiction. Emergency room visits and deaths related to prescription drug overdoses have been increasing from 2005 to
This chapter contains 10 figures and images to illustrate concepts for students, including Fig. 4.2, Fig. 4.3, Fig. 4.5, Fig. 4.9, and Fig. 4.13. It also references content on pages 65 and 78, as well as Table 4.1, to provide visual aids and support the educational topics discussed.
This chapter contains 10 figures and images to illustrate concepts for students, including Fig. 4.2, 4.3, 4.5, 4.9, and 4.13, as well as references to pages 65 and 78. It also includes Table 4.1 to provide additional examples. The images and table are meant to enhance understanding of the material presented.
This document is a chapter from a textbook titled "Images for Students" that contains figures, tables, and page numbers. The chapter includes 11 figures, 2 tables, and spans pages 87 to 103, with the figures and tables providing visual supplemental materials for the textual content.
Ch 1 ppt Setting the Stage Multidimensional Approach of Generalist PracticeAriel. Christopher, BSW
This chapter introduces the multidimensional approach in social work and the planned change process. It discusses that social workers need an understanding of human behavior that integrates the personal, environmental, and life course dimensions. These dimensions interact with and affect each other. The chapter then provides an overview of these dimensions, including biological, psychological, social, cultural, and how social locations shape people's perspectives. It also discusses the importance of theory in helping to organize and interpret situations, and factors to consider when evaluating theory.
Educating social workers to establish well formed goals van voorhis et alAriel. Christopher, BSW
This document discusses the importance of establishing well-formed goals in social work practice and outlines an educational approach for teaching social work students how to do so. It defines key criteria for effective goals, known by the acronym MAPS (measurable, attainable, positive, specific). The authors developed several classroom exercises to engage students in applying these criteria when setting goals for clients, evaluating existing goal statements, and distinguishing goals from interventions. The exercises are meant to prepare students to establish goals that meet client and agency expectations for measurable outcomes.
The document discusses various topics related to child maltreatment and protective services, including definitions of different types of child abuse, indicators of abuse, and statistics on perpetrators. It also describes the generalist intervention model for assessment, planning, implementation, and evaluation of services for families where child maltreatment occurs. Crisis intervention approaches are outlined as well as working with diverse groups like older adults, immigrants, and those struggling with substance abuse issues. Empowerment strategies are discussed at the individual, family, organization, and community levels.
The document outlines the 8 steps in the planning process for generalist social work practice: 1) work with clients, 2) prioritize problems, 3) evaluate levels of intervention, 4) assess client strengths, 5) establish goals, 6) specify objectives, 7) specify action steps, and 8) formalize a contract. It notes the process involves working with clients to prioritize problems, select intervention strategies, establish measurable goals and objectives, and create a formal or informal contract outlining the agreed upon actions and expectations. Considerations for planning in mezzo and macro practice are also briefly discussed.
This document discusses engagement and assessment in social work practice. It covers greeting clients, discussing services, completing paperwork during engagement. For assessment, it describes defining problems, prioritizing issues, identifying client strengths, and using tools like the DSM. Assessment is discussed at the micro, mezzo, and macro levels including for individuals, families, groups, and communities. Factors like motivation, communication, and diversity are addressed in group and community assessments.
This document discusses skills for working with groups, including conceptual frameworks around group dynamics, functions, roles, and decision-making patterns. It covers benefits of groups like mutual assistance and goal achievement. Key group types are task groups like committees and treatment groups like therapy groups. Professional roles in groups include brokers, mediators, and facilitators. Micro skills discussed include conflict resolution, team building, and using structure.
The document provides an overview of cultural competence for social workers. It introduces the core values of the social work profession including service, social justice, dignity and worth of individuals. It defines key concepts such as culture, prejudice, discrimination, and stereotyping. It discusses theories related to these concepts. It also presents frameworks to support culturally competent practice including strengths perspective, person-in-environment, empowerment model, and theories of multicultural competence, feminism, and intersectionality. The document emphasizes that social workers must understand and address issues of power, oppression, and discrimination in their work with diverse populations.
This document provides an overview of personality disorders according to the DSM-IV-TR. It discusses what personality and personality disorders are, and how personality disorders are classified into three clusters: odd/eccentric, dramatic/emotional/erratic, and anxious/inhibited. Specific personality disorders like paranoid, antisocial, and borderline are described. Issues with reliably diagnosing personality disorders and problems with the DSM categories are also reviewed.
This document summarizes key concepts from Chapter 13 of the psychology textbook. It covers topics related to social perception, social influence, and social relations. Some main points include how social perception involves making attributions about others' behaviors and the fundamental attribution error. It also discusses conformity to group norms, obedience to authority, and factors that influence persuasion and attitude change. Group processes like social facilitation, social loafing, and groupthink are summarized. The chapter concludes with sections on aggression, altruism, and the bystander effect.
A strengths perspective in working with an adolescent with self cutting beha...Ariel. Christopher, BSW
This document describes using a strengths perspective approach when working with an adolescent who engages in self-cutting behaviors. It contrasts this approach with a disease model orientation. A case study of a 14-year-old girl named Carol demonstrates how a disease model focuses on diagnosing her behaviors as pathological, labeling her with a diagnosis, and viewing medication as the primary treatment approach. In contrast, a strengths perspective aims to understand the meanings and needs behind symptoms, identify the client's abilities, and facilitate communication and social support networks to help the client develop alternative coping strategies to self-cutting.
This document discusses micro practice skills for working with individuals, focusing on interviewing skills. It covers establishing rapport through verbal and nonverbal communication like eye contact and empathy. Techniques for conducting an interview are explained, including asking open-ended questions, reflecting, clarifying and summarizing. Challenges like dealing with cultural diversity, using silence appropriately, confronting clients respectfully and handling involuntary clients are addressed. The importance of these micro skills in social work is emphasized.
This document discusses motivation and the stages of change model as it relates to addiction recovery and relapse prevention. It describes the five stages of change: precontemplation, contemplation, preparation, action, and maintenance. Relapse is presented as being related to motivation and the stages of change. Urge surfing and identifying triggers are taught as skills to manage cravings and prevent relapse. The relationship between emotion, motivation, and challenges in making changes is explored.
This document outlines the agenda for a women's recovery empowerment meeting. It includes activities like quiet time, check-ins where participants share their name, feelings, and last drug/alcohol use. It also involves decorating binders, telling life stories using a lifeline as a reference, and creating clean copies of stories to add to over time. The overall goal is to empower and support women through sharing experiences and creative self-expression.
Prescription drug abuse, especially of stimulants used to treat conditions like ADHD, has been rising in recent years according to national surveys. Stimulants work by increasing levels of dopamine in the brain, which can produce feelings of pleasure and reward. Dopamine plays a key role in functions like cognition, motivation, and mood. Commonly abused prescription stimulants include Adderall and Ritalin, which are normally prescribed to treat ADHD. While they can improve focus and energy when taken properly, abusing these drugs by crushing them and snorting or injecting can have serious unwanted side effects and lead to addiction. Emergency room visits and deaths related to prescription drug overdoses have been increasing from 2005 to
This chapter contains 10 figures and images to illustrate concepts for students, including Fig. 4.2, Fig. 4.3, Fig. 4.5, Fig. 4.9, and Fig. 4.13. It also references content on pages 65 and 78, as well as Table 4.1, to provide visual aids and support the educational topics discussed.
This chapter contains 10 figures and images to illustrate concepts for students, including Fig. 4.2, 4.3, 4.5, 4.9, and 4.13, as well as references to pages 65 and 78. It also includes Table 4.1 to provide additional examples. The images and table are meant to enhance understanding of the material presented.
This document is a chapter from a textbook titled "Images for Students" that contains figures, tables, and page numbers. The chapter includes 11 figures, 2 tables, and spans pages 87 to 103, with the figures and tables providing visual supplemental materials for the textual content.
PPT on Direct Seeded Rice presented at the three-day 'Training and Validation Workshop on Modules of Climate Smart Agriculture (CSA) Technologies in South Asia' workshop on April 22, 2024.
(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.
SDSS1335+0728: The awakening of a ∼ 106M⊙ black hole⋆Sérgio Sacani
Context. The early-type galaxy SDSS J133519.91+072807.4 (hereafter SDSS1335+0728), which had exhibited no prior optical variations during the preceding two decades, began showing significant nuclear variability in the Zwicky Transient Facility (ZTF) alert stream from December 2019 (as ZTF19acnskyy). This variability behaviour, coupled with the host-galaxy properties, suggests that SDSS1335+0728 hosts a ∼ 106M⊙ black hole (BH) that is currently in the process of ‘turning on’. Aims. We present a multi-wavelength photometric analysis and spectroscopic follow-up performed with the aim of better understanding the origin of the nuclear variations detected in SDSS1335+0728. Methods. We used archival photometry (from WISE, 2MASS, SDSS, GALEX, eROSITA) and spectroscopic data (from SDSS and LAMOST) to study the state of SDSS1335+0728 prior to December 2019, and new observations from Swift, SOAR/Goodman, VLT/X-shooter, and Keck/LRIS taken after its turn-on to characterise its current state. We analysed the variability of SDSS1335+0728 in the X-ray/UV/optical/mid-infrared range, modelled its spectral energy distribution prior to and after December 2019, and studied the evolution of its UV/optical spectra. Results. From our multi-wavelength photometric analysis, we find that: (a) since 2021, the UV flux (from Swift/UVOT observations) is four times brighter than the flux reported by GALEX in 2004; (b) since June 2022, the mid-infrared flux has risen more than two times, and the W1−W2 WISE colour has become redder; and (c) since February 2024, the source has begun showing X-ray emission. From our spectroscopic follow-up, we see that (i) the narrow emission line ratios are now consistent with a more energetic ionising continuum; (ii) broad emission lines are not detected; and (iii) the [OIII] line increased its flux ∼ 3.6 years after the first ZTF alert, which implies a relatively compact narrow-line-emitting region. Conclusions. We conclude that the variations observed in SDSS1335+0728 could be either explained by a ∼ 106M⊙ AGN that is just turning on or by an exotic tidal disruption event (TDE). If the former is true, SDSS1335+0728 is one of the strongest cases of an AGNobserved in the process of activating. If the latter were found to be the case, it would correspond to the longest and faintest TDE ever observed (or another class of still unknown nuclear transient). Future observations of SDSS1335+0728 are crucial to further understand its behaviour. Key words. galaxies: active– accretion, accretion discs– galaxies: individual: SDSS J133519.91+072807.4
Embracing Deep Variability For Reproducibility and Replicability
Abstract: Reproducibility (aka determinism in some cases) constitutes a fundamental aspect in various fields of computer science, such as floating-point computations in numerical analysis and simulation, concurrency models in parallelism, reproducible builds for third parties integration and packaging, and containerization for execution environments. These concepts, while pervasive across diverse concerns, often exhibit intricate inter-dependencies, making it challenging to achieve a comprehensive understanding. In this short and vision paper we delve into the application of software engineering techniques, specifically variability management, to systematically identify and explicit points of variability that may give rise to reproducibility issues (eg language, libraries, compiler, virtual machine, OS, environment variables, etc). The primary objectives are: i) gaining insights into the variability layers and their possible interactions, ii) capturing and documenting configurations for the sake of reproducibility, and iii) exploring diverse configurations to replicate, and hence validate and ensure the robustness of results. By adopting these methodologies, we aim to address the complexities associated with reproducibility and replicability in modern software systems and environments, facilitating a more comprehensive and nuanced perspective on these critical aspects.
https://hal.science/hal-04582287
The cost of acquiring information by natural selectionCarl 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
Candidate young stellar objects in the S-cluster: Kinematic analysis of a sub...Sérgio Sacani
Context. The observation of several L-band emission sources in the S cluster has led to a rich discussion of their nature. However, a definitive answer to the classification of the dusty objects requires an explanation for the detection of compact Doppler-shifted Brγ emission. The ionized hydrogen in combination with the observation of mid-infrared L-band continuum emission suggests that most of these sources are embedded in a dusty envelope. These embedded sources are part of the S-cluster, and their relationship to the S-stars is still under debate. To date, the question of the origin of these two populations has been vague, although all explanations favor migration processes for the individual cluster members. Aims. This work revisits the S-cluster and its dusty members orbiting the supermassive black hole SgrA* on bound Keplerian orbits from a kinematic perspective. The aim is to explore the Keplerian parameters for patterns that might imply a nonrandom distribution of the sample. Additionally, various analytical aspects are considered to address the nature of the dusty sources. Methods. Based on the photometric analysis, we estimated the individual H−K and K−L colors for the source sample and compared the results to known cluster members. The classification revealed a noticeable contrast between the S-stars and the dusty sources. To fit the flux-density distribution, we utilized the radiative transfer code HYPERION and implemented a young stellar object Class I model. We obtained the position angle from the Keplerian fit results; additionally, we analyzed the distribution of the inclinations and the longitudes of the ascending node. Results. The colors of the dusty sources suggest a stellar nature consistent with the spectral energy distribution in the near and midinfrared domains. Furthermore, the evaporation timescales of dusty and gaseous clumps in the vicinity of SgrA* are much shorter ( 2yr) than the epochs covered by the observations (≈15yr). In addition to the strong evidence for the stellar classification of the D-sources, we also find a clear disk-like pattern following the arrangements of S-stars proposed in the literature. Furthermore, we find a global intrinsic inclination for all dusty sources of 60 ± 20◦, implying a common formation process. Conclusions. The pattern of the dusty sources manifested in the distribution of the position angles, inclinations, and longitudes of the ascending node strongly suggests two different scenarios: the main-sequence stars and the dusty stellar S-cluster sources share a common formation history or migrated with a similar formation channel in the vicinity of SgrA*. Alternatively, the gravitational influence of SgrA* in combination with a massive perturber, such as a putative intermediate mass black hole in the IRS 13 cluster, forces the dusty objects and S-stars to follow a particular orbital arrangement. Key words. stars: black holes– stars: formation– Galaxy: center– galaxies: star formation
PPT on Sustainable Land Management presented at the three-day 'Training and Validation Workshop on Modules of Climate Smart Agriculture (CSA) Technologies in South Asia' workshop on April 22, 2024.
Discovery of An Apparent Red, High-Velocity Type Ia Supernova at 𝐳 = 2.9 wi...Sérgio Sacani
We present the JWST discovery of SN 2023adsy, a transient object located in a host galaxy JADES-GS
+
53.13485
−
27.82088
with a host spectroscopic redshift of
2.903
±
0.007
. The transient was identified in deep James Webb Space Telescope (JWST)/NIRCam imaging from the JWST Advanced Deep Extragalactic Survey (JADES) program. Photometric and spectroscopic followup with NIRCam and NIRSpec, respectively, confirm the redshift and yield UV-NIR light-curve, NIR color, and spectroscopic information all consistent with a Type Ia classification. Despite its classification as a likely SN Ia, SN 2023adsy is both fairly red (
�
(
�
−
�
)
∼
0.9
) despite a host galaxy with low-extinction and has a high Ca II velocity (
19
,
000
±
2
,
000
km/s) compared to the general population of SNe Ia. While these characteristics are consistent with some Ca-rich SNe Ia, particularly SN 2016hnk, SN 2023adsy is intrinsically brighter than the low-
�
Ca-rich population. Although such an object is too red for any low-
�
cosmological sample, we apply a fiducial standardization approach to SN 2023adsy and find that the SN 2023adsy luminosity distance measurement is in excellent agreement (
≲
1
�
) with
Λ
CDM. Therefore unlike low-
�
Ca-rich SNe Ia, SN 2023adsy is standardizable and gives no indication that SN Ia standardized luminosities change significantly with redshift. A larger sample of distant SNe Ia is required to determine if SN Ia population characteristics at high-
�
truly diverge from their low-
�
counterparts, and to confirm that standardized luminosities nevertheless remain constant with redshift.
Signatures of wave erosion in Titan’s coastsSérgio Sacani
The shorelines of Titan’s hydrocarbon seas trace flooded erosional landforms such as river valleys; however, it isunclear whether coastal erosion has subsequently altered these shorelines. Spacecraft observations and theo-retical models suggest that wind may cause waves to form on Titan’s seas, potentially driving coastal erosion,but the observational evidence of waves is indirect, and the processes affecting shoreline evolution on Titanremain unknown. No widely accepted framework exists for using shoreline morphology to quantitatively dis-cern coastal erosion mechanisms, even on Earth, where the dominant mechanisms are known. We combinelandscape evolution models with measurements of shoreline shape on Earth to characterize how differentcoastal erosion mechanisms affect shoreline morphology. Applying this framework to Titan, we find that theshorelines of Titan’s seas are most consistent with flooded landscapes that subsequently have been eroded bywaves, rather than a uniform erosional process or no coastal erosion, particularly if wave growth saturates atfetch lengths of tens of kilometers.
Anti-Universe And Emergent Gravity and the Dark UniverseSérgio 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.