Results 41 to 50 of about 641,342 (317)

Zooplankton abundance, species composition and ecology of tropical high-mountain crater lake Wonchi, Ethiopia

open access: yesJournal of Limnology, 2014
The highlands of Ethiopia represent some of the remnants of undisturbed aquatic ecosystems; they are however highly threatened by significant socio–economic developments and associated anthropogenic impacts. Lake Wonchi is one of the few remaining fairly
Fasil Degefu, Michael Schagerl
doaj   +1 more source

Exploring physical, biological, and behavioral processes that affect larval fish distribution in the pelagic zone of Lake Michigan [PDF]

open access: yes, 2010
The growth and survival of larval fish are influenced by a suite of biotic and abiotic factors. Because aquatic systems are characterized by strong heterogeneity in biotic and abiotic conditions along a vertical gradient, the vertical distribution of ...
Martin, Benjamin
core  

Network divergence analysis identifies adaptive gene modules and two orthogonal vulnerability axes in pancreatic cancer

open access: yesMolecular Oncology, EarlyView.
Tumors contain diverse cellular states whose behavior is shaped by context‐dependent gene coordination. By comparing gene–gene relationships across biological contexts, we identify adaptive transcriptional modules that reorganize into distinct vulnerability axes.
Brian Nelson   +9 more
wiley   +1 more source

Measurement and Visualization of R410A Distribution in the Vertical Header of the Microchannel Heat Exchanger [PDF]

open access: yes, 2012
This paper presents the refrigerant adiabatic upward flow in the vertical header of microchannel heat exchanger and its effect on distribution. R410A is circulated into the header through the microchannel tubes (5 or 10 tubes) in the bottom pass and ...
Zou, Yang, Hrnjak, Predrag S.
core   +1 more source

(Table 1) Vertical distribution of pelagic polychaetes in Kuril-Kamchatka Trench plankton on 1 August 1966 [PDF]

open access: yes, 1969
(Table 1) Vertical distribution of pelagic polychaetes in Kuril-Kamchatka Trench plankton on 1 August ...
Semyon A Mileykovsky (7963361)   +1 more
core   +1 more source

EDNRB‐dependent endothelin signaling reduces proliferation and promotes proneural‐to‐mesenchymal transition in gliomas

open access: yesMolecular Oncology, EarlyView.
Glioma cells mainly express the endothelin receptor EDNRB, while EDNRA is restricted to a perivascular tumor subpopulation. Endothelin signaling reduces glioma cell proliferation while promoting migration and a proneural‐to‐mesenchymal transition associated with poor prognosis. This pathway activates Ca2+, K+, ERK, and STAT3 signalings and is regulated
Donovan Pineau   +36 more
wiley   +1 more source

Vertical restraints and competition policy [PDF]

open access: yes, 1996
This report considers the private and social welfare effects of vertical restraints - whereby contractual arrangements between suppliers (manufacturers) and distributors (retailers) extend beyond simple arms-length pricing.
Dobson, Paul   +3 more
core  

Somatic mutational landscape in von Hippel–Lindau familial hemangioblastoma

open access: yesMolecular Oncology, EarlyView.
The causes of central nervous system (CNS) hemangioblastoma in Von Hippel–Lindau (vHL) disease are unclear. We used Whole Exome Sequencing (WES) on familial hemangioblastoma to investigate events that underlie tumor development. Our findings suggest that VHL loss creates a permissive environment for tumor formation, while additional alterations ...
Maja Dembic   +5 more
wiley   +1 more source

CD47 promotes mitogen‐activated protein kinase and epithelial‐to‐mesenchymal transition molecular programs to drive prometastatic phenotypes in non‐small cell lung cancer

open access: yesMolecular Oncology, EarlyView.
Beyond its role in immune evasion, this study identified that CD47 drives tumor‐intrinsic signaling in non‐small cell lung cancer (NSCLC). Transcriptomic profiling and functional studies revealed that CD47 regulates cell adhesion, migration, and metastasis through an ERK–EMT signaling axis.
Asa P.Y. Lau   +8 more
wiley   +1 more source

Resilience of the Copepod Oithona similis to Climatic Variability: Egg Production, Mortality, and Vertical Habitat Partitioning

open access: yesFrontiers in Marine Science, 2020
There has been an overall decline in copepod populations across the North Atlantic over the past few decades. Reasons for these declines are unclear, and several major species, including the cyclopoid copepod Oithona similis, have maintained stable ...
Louise Elisabeth Cornwell   +11 more
doaj   +1 more source

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