Results 1 to 10 of about 1,198,277 (402)

The Accelerated Recombination, and the ACBAR and WMAP data [PDF]

ApJL 678, L1 2008, 2008
We have investigated the deviation from the standard recombination process, using the ACBAR 2008 and the WMAP 3 year data. In this investigation, we have considered the possibility of the accelerated recombination as well as the delayed recombination.
Doroshkevich, Fixsen, Hinshaw, Jaiseung Kim, Pavel Naselsky, Peebles, Reichardt   +6 more
arxiv   +3 more sources

Electron-Ion Recombination Rate Coefficients and Photoionization Cross Sections for Astrophysically Abundant Elements VI. Ni II [PDF]

Astrophys.J.Suppl. 137 (2001) 201-208, 2001
We present the first detailed ab initio quantum mechanical calculations for total and state-specific recombination rate coefficients for e + Ni III --> Ni II. These rates are obtained using a unified treatment for total electron-ion recombination that treats the nonresonant radiative recombination and the resonant dielectronic recombination in a self ...
Bautista M. A., Hummer D. G., Manuel A. Bautista, Seaton M. J., Sultana N. Nahar, Zhang H. L.   +5 more
arxiv   +5 more sources

Could the Cosmological Recombination Spectrum Help Us Understand Annihilating Dark Matter? [PDF]

, 2009
In this paper we explore the potential effects of DM annihilations on the cosmological recombination spectrum. With this example we want to demonstrate that the cosmological recombination spectrum in principle is sensitive to details related to possible extra energy release during recombination.
Abdo, Adriani, Arkani-Hamed, Bean, Bean, Burigana, Carr, Chang, Chen, Chluba, Chluba, Chluba, Chluba, Chluba, Chluba, Chluba, Chluba, Chluba, Chluba, Cirelli, Colombo, Doran, Dubrovich, Dubrovich, Fendt, Fixsen, Galli, Galli, Galli, Hirata, Hirata, Holder, Hooper, Hu, Huetsi, Illarionov, Illarionov, J. Chluba, Jasche, Kholupenko, Komatsu, Komatsu, Mapelli, Mather, McDonald, Molnar, Ostriker, Padmanabhan, Peebles, Peebles, Refregier, Rubiño-Martín, Rubiño-Martín, Schleicher, Seager, Seager, Shull, Shull, Slatyer, Sunyaev, Sunyaev, Sunyaev, Switzer, Switzer, Vonlanthen, Wong, Zeldovich, Zeldovich, Zhang, Zhang   +69 more
arxiv   +3 more sources

Accelerated Recombination due to Resonant Deexcitation of Metastable States [PDF]

, 2001
In a recombining plasma the metastable states are known to accumulate population thereby slowing down the recombination process. We show that an account of the doubly-excited autoionizing states, formed due to collisional recombination of metastable ions, results in a significant acceleration of recombination.
Apruzese, Bell, Bernshtam, Cacciatore, Clark, Cowan, Drayson, Elton, Fisher, Fisher, Fisher, Fujimoto, Fujimoto, Gorse, Griem, Griem, Hahn, Jacoby, Kawachi, Kawachi, Koshelev, Koshelev, Lee, Lennon, Lotz, Mazzotta, Murillo, Müller, Parpia, Ralchenko, Shevelko, Verner   +31 more
arxiv   +4 more sources

Delayed Recombination and Standard Rulers [PDF]

Phys.Rev.D79:043503,2009, 2008
Measurements of Baryonic Acoustic Oscillations in galaxy surveys have been recognized as a powerful tool for constraining dark energy. However, this method relies on the knowledge of the size of the acoustic horizon at recombination derived from Cosmic Microwave Background Anisotropy measurements.
A. G. Sanchez, Alessandro Melchiorri, Francesco De Bernardis, J. R. Bond, Joseph I. Silk, Licia Verde, M. G. Kendall, Rachel Bean, Silvia Galli, Ya. B. Zel’dovich, Ya. B. Zel’dovich   +10 more
arxiv   +4 more sources

Highly Expressed Soluble Recombinant Anti-GFP VHHs in Escherichia coli via Optimized Signal Peptides, Strains, and Inducers

Frontiers in Molecular Biosciences, 2022
Antigen-binding variable domains of the H chain of heavy-chain antibodies (VHHs), also known as nanobodies (Nbs), are of great interest in imaging technique, disease prevention, diagnosis, and therapy.
Shuangying Chao, Shuangying Chao, Yuhang Liu, Yuhang Liu, Ning Ding, Ning Ding, Yue Lin, Yue Lin, Qian Wang, Qian Wang, Junwen Tan, Junwen Tan, Wei Li, Wei Li, Yang Zheng, Yang Zheng, Xuejun Hu, Xuejun Hu, Junming Li   +18 more
doaj   +1 more source

Plasma Membrane Anchoring and Gag:Gag Multimerization on Viral RNA Are Critical Properties of HIV-1 Gag Required To Mediate Efficient Genome Packaging

mBio, 2021
Human immunodeficiency virus type 1 (HIV-1) Gag selects and packages the HIV RNA genome during virus assembly. However, HIV-1 RNA constitutes only a small fraction of the cellular RNA.
Alice Duchon, Steven Santos, Jianbo Chen, Matthew Brown, Olga A. Nikolaitchik, Sheldon Tai, Jeffrey A. Chao, Eric O. Freed, Vinay K. Pathak, Wei-Shau Hu   +9 more
doaj   +1 more source

Coding and noncoding transcriptomes of NODULIN HOMEOBOX (NDX)-deficient Arabidopsis inflorescence

Scientific Data, 2023
Arabidopsis NODULIN HOMEOBOX (NDX) is a plant-specific transcriptional regulator whose role in small RNA biogenesis and heterochromatin homeostasis has recently been described. Here we extend our previous transcriptomic analysis to the flowering stage of
Orsolya Feró, Zsolt Karányi, Éva Nagy, Ágnes Mosolygó-L, Henrik Mihály Szaker, Tibor Csorba, Lóránt Székvölgyi   +6 more
doaj   +1 more source

Adaptation of HIV-1/HIV-2 Chimeras with Defects in Genome Packaging and Viral Replication

mBio, 2022
Frequent recombination is a hallmark of retrovirus replication. In rare cases, recombination occurs between distantly related retroviruses, generating novel viruses that may significantly impact viral evolution and public health.
Jonathan M. O. Rawson, Olga A. Nikolaitchik, Jennifer A. Yoo, Xayathed Somoulay, Matthew A. Brown, Franck S. Mbuntcha Bogni, Vinay K. Pathak, Ferri Soheilian, Ryan L. Slack, Stefan G. Sarafianos, Wei-Shau Hu   +10 more
doaj   +1 more source

NODULIN HOMEOBOX is required for heterochromatin homeostasis in Arabidopsis

Nature Communications, 2022
Arabidopsis NDX was previously reported as a regulator of euchromatic gene expression. Here the authors show that NDX functions at pericentromeric regions and regulates heterochromatin homeostasis by controlling siRNA production and non-CG methylation.
Zsolt Karányi, Ágnes Mosolygó-L, Orsolya Feró, Adrienn Horváth, Beáta Boros-Oláh, Éva Nagy, Szabolcs Hetey, Imre Holb, Henrik Mihály Szaker, Márton Miskei, Tibor Csorba, Lóránt Székvölgyi   +11 more
doaj   +1 more source