Results 41 to 50 of about 1,640 (307)

pH‐mediated activation of the lysosomal arginine sensor SLC38A9

open access: yesFEBS Letters, EarlyView.
Cells monitor nutrient levels via the lysosomal transporter SLC38A9 to activate the mechanistic target of rapamycin complex 1 (mTORC1). This study reveals that SLC38A9 function is regulated by pH. We identified histidine 544 as a critical pH sensor that undergoes conformational changes to control amino acid efflux from lysosomes; therefore, it ...
Xuelang Mu, Ampon Sae Her, Tamir Gonen
wiley   +1 more source

Timberlake placers, Moffat County, Colorado

open access: yes, 2022
Mine report no. 1255.Typescript (carbon copy).Includes assay report, handwritten report, map and newspaper clipping.Report for Burton Cohn on the Timberlake placers, Moffat county, Colorado, 1936 -- Preliminary report: The Timberlake or Fourmile placer ...
Marks, John H. (John Henry)   +1 more
core  

Residual tail twisting in ascidian larvae is stabilized by asymmetric myofibrils that resist bilateral symmetry restoration

open access: yesFEBS Letters, EarlyView.
Ascidian Ciona larvae initially show strong clockwise tail twisting, which is largely corrected during development. However, a small residual twist remains. This study shows that organized helical myofibrils in tail muscles mechanically stabilize this residual asymmetry, preventing complete restoration of bilateral symmetry and revealing how embryos ...
Yuki S. Kogure   +3 more
wiley   +1 more source

Chemical composition as an indicator of ilmenite genesis and titanium raw material quality

open access: yesМінеральні ресурси України
The study focuses on the chemical composition of ilmenite from various geological settings, including primary and placer deposits, weathering profiles, river and marine sediments, and mud volcanoes.
A. O. Polietnova
doaj   +1 more source

Valorization of waste from old gold mining in the south of the Russian Far East using pyro-hydrometallurgy methods [PDF]

open access: yesBIO Web of Conferences
The basics of the original technology for the development of man-made placers in the south of the Russian Far East have been developed. The necessity of using methods of hydrodifluoride conversion, hydrometallurgy, fluoride autopsy is substantiated.
Molchanov Vladimir, Yudakov Alexander
doaj   +1 more source

Biophysical approaches for studying viral entry

open access: yesFEBS Letters, EarlyView.
Viruses infect all living organisms and have been responsible for major epidemics and pandemics. Their ongoing evolutionary battle with host defenses creates a constant need for improved tools to study viral behavior. Advancing methods to probe viral attachment, fusion, and genome release deepen our understanding of how infections begin and support the
Inbar Yosibash, Raya Sorkin
wiley   +1 more source

Mineralogical and Geochemical Characteristics of Placer and Ore Gold in the Upper Reaches of the Amazar River (Mogochinsky Gold Mining District, Eastern Transbaikalia)

open access: yesGeoresursy
A detailed study of gold from placers and eluvium of the ore zones of the Amazarkan deposit, located in the basin of the three upper tributaries of the Amazar River, was carried out. The placers are not very far from the primary sources.
V. V. Kolpakov   +2 more
doaj   +1 more source

Reference couple gold deposit — placer as a basis for forecasting of the new gold deposits in Amur river basin

open access: yesИзвестия высших учебных заведений: Геология и разведка, 2019
About 1400 placers and several dozens of ore gold deposits are known in the Amur gold-bearing province. Placers are to a large degree worked out, so the future of the province is seen to be in the discovery of the new gold deposits.
V. A. Stepanov
doaj   +1 more source

Rab14 regulates the transport of human papillomavirus to the trans‐Golgi network for infectious cell entry

open access: yesFEBS Letters, EarlyView.
This study reveals that the small GTPase Rab14 is necessary for human papillomavirus (HPV) infection and plays an essential role in the transport of virions to the trans‐Golgi network (TGN). HPV in the early endosome (EE), which harbors GTP‐bound Rab14, is transported to the TGN through the switch of Rab14 from its GTP‐bound to GDP‐bound form.
Yoshiyuki Ishii, Iwao Kukimoto
wiley   +1 more source

Caracterització mineralògica de placers del riu Segre [PDF]

open access: yes, 2022
El Segre representa un dels rius més importants de Catalunya, pel que fa al seu cabal i llargada, però també ho és pel que fa a mineria. Històricament l’explotació del riu ha estat estrictament aurífera, però això no significa que al riu Segre no ...
Granel Pi, Jeroni
core   +1 more source

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