نتایج جستجو برای: proto

تعداد نتایج: 33924  

Journal: :Journal of clinical pathology 1990
Y Deguchi S Kishimoto

The expression of c-sis proto-oncogene in bronchoalveolar mononuclear cells was studied in seven patients with pulmonary sarcoidosis. By means of nuclear run on transcription assay, the transcriptional level of c-sis proto-oncogene in bronchoalveolar mononuclear cells was investigated. Expression of c-sis proto-oncogene in bronchoalveolar mononuclear cells was enhanced. Enhancement of c-sis tra...

Journal: :Angewandte Chemie 2010
Denis Gebauer Philips N Gunawidjaja J Y Peter Ko Zoltán Bacsik Baroz Aziz Lijia Liu Yongfeng Hu Lennart Bergström Cheuk-Wai Tai Tsun-Kong Sham Mattias Edén Niklas Hedin

Crystallization of calcium carbonate, typically, progresses sequentially via metastabIc phases. Amorphous CaC03 (ACC) generally forms initially, both in vitro and in vivo, and is the precursor of the predominant anhydrous polymorphs (calcite, aragonite, and vaterite). [I-I3] A new picture of the crystallization of calcium carbonate is emerging, which involves transformations of clusters to ACC ...

Journal: :Artificial life 2003
Steen Rasmussen Liaohai Chen Martin Nilsson Shigeaki Abe

Assembling non-biological materials (geomaterials) into a proto-organism constitutes a bridge between nonliving and living matter. In this article we present a simple step-by-step route to assemble a proto-organism. Many pictures have been proposed to describe this transition within the origins-of-life and artificial life communities, and more recently alternative pictures have been emerging fr...

2001
Cristiano Porciani Avishai Dekel Yehuda Hoffman

We investigate the cross-talk between the two key components of tidal-torque theory, the inertia (I) and shear (T ) tensors, using a cosmological N -body simulation with thousands of well-resolved haloes. We find that the principal axes of I and T are strongly aligned, even though I characterizes the proto-halo locally while T is determined by the large-scale structure. Thus, the resultant gala...

Journal: :Evolutionary human sciences 2022

Abstract From a linguistic standpoint, Proto-Japonic and Proto-Koreanic are assumed to have split off the Transeurasian languages in southern Manchuria. The idea that came earlier than chronological scheme means language first entered Korean Peninsula, from there spread Japanese archipelago at beginning of Yayoi period, around ninth century BC, while arrival Korea is associated with rolled rim ...

2017
Steven Brown

Proto-acting is introduced here as a new concept that refers to a set of processes that are intermediate between everyday role playing (in the Erving Goffman sense) and dramatic acting. Its most characteristic process is the voluntary act of personal mimicry, which can occur in everyday contexts, such as quoting someone during conversation, or in performance contexts, such as impressionism. Pro...

2011
Miri Krupkin Donna Matzov Hua Tang Markus Metz Rinat Kalaora Matthew J. Belousoff Ella Zimmerman Anat Bashan Ada Yonath

Based on the presumed capability of a prebiotic pocket-like entity to accommodate substrates whose stereochemistry enables the creation of chemical bonds, it is suggested that a universal symmetrical region identified within all contemporary ribosomes originated from an entity that we term the 'proto-ribosome'. This 'proto-ribosome' could have evolved from an earlier machine that was capable of...

Journal: : 2022

Ever since the Afroasiatic affiliation of Chadic as a whole was suggested by Joseph H. Greenberg in his seminal re-classification African languages 1950s and has been generally accepted, i.e. encompassing both ‘Chado-Hamitic’ ‘Chadic’ influential pre-Greenbergian genetic classifications, issue whether Proto-Chadic possessed prenasalised obstruents velar nasals repeatedly raised debated literatu...

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