Project Gutenberg
Proceedings and Register of Free Blacks, 1803 (1 volume). Entry 221, Box 585
1803 - Gale Group | SASII
Stefan Hollands, Robert M. Wald, Victor G. Zhang,
... new formula for the entropy of a dynamical black hole—valid to leading order for perturbations off of a stationary black hole background—in an arbitrary classical diffeomorphism covariant ... our formula for the entropy of a dynamical black hole differs from the standard Bekenstein-Hawking formula ... physical process version” of the first law of black hole thermodynamics hold for perturbations of a stationary black hole. It follows immediately that for first order ... condition, our entropy obeys the second law of black hole thermodynamics. For vacuum perturbations, the leading-order ...
Tópico(s): Advanced Differential Geometry Research
2024 - American Physical Society | Physical review. D/Physical review. D.
Proceedings and Register of Free Blacks, 1803 (1 volume). Entry 221, Box 585
1803 - Gale Group | SASII
Deepshikha Charan Ashana, Whitney Welsh, Doreet Preiss, Jessica Sperling, HyunBin You, Karissa Tu, Shannon S. Carson, Catherine L. Hough, Douglas B. White, Meeta Prasad Kerlin, Sharron L. Docherty, Kimberly S. Johnson, Christopher E. Cox,
... to shared decision-making in recorded conversations with Black and White caregivers of patients with critical illness. ... Participants in meetings included critical care clinicians and Black or White caregivers of patients who underwent mechanical ... the caregivers. Results The overall sample comprised 20 Black and 19 White caregivers for a total of ... The duration of meetings was similar for both Black and White caregivers (mean [SD], 23.9 [13. ... vs 22.1 [11.2] minutes, respectively). Both Black and White caregivers were generally middle-aged (mean [ ...
Tópico(s): Palliative Care and End-of-Life Issues
2024 - American Medical Association | JAMA Internal Medicine
National Bureau of Economic Research (NBER)
Proceedings and Register of Free Blacks, 1803 (1 volume). Entry 221, Box 585
1803 - Gale Group | SASII
Sardor Murodov, Kodir Badalov, Javlon Rayimbaev, Bobomurat Ahmedov, Zdeněk Stuchlík,
... accretion disks consisting of electrically charged particles around black holes may provide powerful information about the spacetime geometry of the central black hole. We investigate the circular orbits of electrically charged particles around an electrically charged black-bounce Reissner–Nordström (RN) black hole, known as an RN Simpson–Visser (SV) black hole. We also study the profiles of the ... we calculate and study the effects of the black-bounce parameter as well as the black-hole charge on the intensity of the radiation ...
Tópico(s): Astrophysical Phenomena and Observations
2024 - Multidisciplinary Digital Publishing Institute | Symmetry
National Bureau of Economic Research (NBER)
Proceedings and Register of Free Blacks, 1803 (1 volume). Entry 221, Box 585
1803 - Gale Group | SASII
Chen-Wei Tong, Bin-Hao Wang, Jia-Rui Sun,
... the topological numbers of the four-dimensional Schwarzschild black hole, d -dimensional Reissner–Nordström (RN) black hole, d -dimensional singly rotating Kerr black hole and five-dimensional Gauss–Bonnet black hole via the Rényi statistics. We find that ... interesting is that the topological classifications of different black holes are consistent in both the Rényi and GB statistics: the four-dimensional RN black hole, four-dimensional and five-dimensional singly rotating Kerr black holes, five-dimensional charged and uncharged Gauss–Bonnet ...
Tópico(s): Noncommutative and Quantum Gravity Theories
2024 - Springer Science+Business Media | The European Physical Journal C
Project Gutenberg
Proceedings and Register of Free Blacks, 1803 (1 volume). Entry 221, Box 585
1803 - Gale Group | SASII
J. Sadeghi, Saeed Noori Gashti, İzzet Sakallı, B. Pourhassan,
... find the relationship between entropy and extremality-bound black holes. This relationship has been investigated for many black holes, such as charged AdS, rotating, and massive gravity black holes. We give a minor constant correction to ... these universal relations for a charged-rotating-AdS black hole. We then examine these calculations for the black hole, surrounded by the quintessence and the cloud ... the relation between the extremal mass of the black hole and the factor of cloud string and ... ratio and concept of weak gravity conjecture of black holes. We note here that the added constant ...
Tópico(s): Advanced Differential Geometry Research
2024 - Elsevier BV | Nuclear Physics B
Proceedings and Register of Free Blacks, 1803 (1 volume). Entry 221, Box 585
1803 - Gale Group | SASII
Niyaz Uddin Molla, Himanshu Chaudhary, G. Mustafa, Ujjal Debnath, S. K. Maurya,
... investigate strong gravitational lensing by quantum-improved charged black holes characterized by an additional parameter denoted as $$\ ... θ 1 E for the quantum-improved charged black hole is more significant than those for Schwarzschild, quantum-improved Schwarzschild, and Reisner–Nordström black holes. As with supermassive black holes such as $$M87^*$$ M 87 ∗ and $$SgrA^*$$ ... is observed that to be a viable astrophysical black hole, the EHT results constrain the parameter space ( $$\ ... on the parameter space of quantum-improved charged black holes compared to those established by the EHT ...
Tópico(s): Astrophysics and Cosmic Phenomena
2024 - Springer Science+Business Media | The European Physical Journal C
Proceedings and Register of Free Blacks, 1803 (1 volume). Entry 221, Box 585
1803 - Gale Group | SASII
Dexin Kong, Shuxiao Wang, Rui Shan, Jing Gu, Haoran Yuan, Yong Chen,
... this paper is to develop tires cracking carbon black with low ash content. The thermal decomposition characteristics ... yield, ash content and structure of pyrolytic carbon black were discussed by the laboratory tube furnace. Aiming ... phenomenon of high ash content in pyrolytic carbon black, the effect of acid and alkali solvent treatment ... rate and the surface structural properties of carbon black were investigated. The experimental results show that the ... and 500 °C, the yield of pyrolysis carbon black is 38%, and the ash content of carbon ...
Tópico(s): Polymer Nanocomposites and Properties
2024 - Elsevier BV | Journal of Analytical and Applied Pyrolysis
National Bureau of Economic Research (NBER)
Proceedings and Register of Free Blacks, 1803 (1 volume). Entry 221, Box 585
1803 - Gale Group | SASII
B. Eslam Panah, Bidyut Hazarika, Prabwal Phukon,
... effect of high energy and topological parameters on black holes in $\mathrm{ F}(R)$ gravity, we consider ... energy and topological parameters on the physics of black holes. For this purpose, we first extract topological black hole solutions in $\mathrm{ F}(R)$-ModMax gravity’s rainbow. Then, by considering black holes as thermodynamic systems, we obtain thermodynamic quantities ... the Hawking temperature and the total mass of black holes is obvious. We also discuss the thermodynamic topology of topological black holes in $\mathrm{ F}(R)$-ModMax gravity’s ...
Tópico(s): Noncommutative and Quantum Gravity Theories
2024 - University of Oxford | Progress of Theoretical and Experimental Physics
Proceedings and Register of Free Blacks, 1803 (1 volume). Entry 221, Box 585
1803 - Gale Group | SASII
This study examines the quantum-improved charged black hole and examines the influence of higher-order thermal fluctuations on its corrected energies. The research aims to assess the null geodesics, shadow radius, quasinormal modes, and emission energy of the black hole. Observations are made on the impact of the quantum parameter and charge of the black hole geometry on the Schwarzschild black hole. The location of the event horizon is ... lower values of charge. The entropy of the black hole exhibits fluctuations for smaller black holes and ...
Tópico(s): Cosmology and Gravitation Theories
2024 - Elsevier BV | Physics of the Dark Universe
Springer Link
Proceedings and Register of Free Blacks, 1803 (1 volume). Entry 221, Box 585
1803 - Gale Group | SASII
Lingle Chang, Yundi Zheng, Sheng Li, Xi Niu, Shihui Huang, Qingmeng Long, Xueqin Ran, Jiafu Wang,
Abstract Background Guizhou black goat is one of the indigenous black goat breeds in the southwest region of Guizhou, China, which is an ... production. They are characterized by moderate body size, black coat, favorite meat quality with tender meat and ... Here, we resequenced the whole genome of Guizhou black goat from 30 unrelated individuals breeding in the ... breed. The population structure analysis revealed that Guizhou black goat shared a common ancestry with Shaanbei white cashmere goat (0.146), Yunshang black goat (0.103), Iran indigenous goat (0.054), ...
Tópico(s): Livestock Farming and Management
2024 - BioMed Central | BMC Genomics