Results 71 to 80 of about 318 (202)

Avaliação técnica e econômica da extração de madeira de eucalipto com"clambunk skidder" Technical and economic evaluation of eucalyptus log extraction using a clambunk skidder

Revista Árvore, 2006
O presente estudo teve como objetivo avaliar técnica e economicamente atividades de extração de madeira em vários declives, utilizando-se um trator florestal arrastador ("clambunk skidder") com rodado de pneus recoberto por esteiras.
Robson José de Oliveira, Carlos Cardoso Machado, Amaury Paulo de Souza, Helio Garcia Leite   +3 more
doaj   +1 more source

Pharmacological inhibition of the PERK pathway modulates hepatocellular carcinoma growth and immune signaling

FEBS Open Bio, EarlyView.
Pharmacological inhibition of PERK in a DEN‐induced mouse model of liver cancer does not reduce tumor burden but alters cellular stress signaling. Despite blocking PERK activity, downstream stress responses, including CHOP expression, remain active, suggesting compensatory mechanisms within the unfolded protein response that may influence tumor ...
Ada Lerma‐Clavero, Maria Kopsida, Nathalie Arendt, Hans Lennernäs, Markus Sjöblom, Femke Heindryckx   +5 more
wiley   +1 more source

IMPACT OF CARBURIZING AND BOROSILICONIZING ON VIBROACCELERATION OF BEVEL GEAR FRONT DRIVE AXLE SKIDDERS DURING OPERATION

Литьë и металлургия, 2015
It is now established that the main causes of failure of the transmission parts of the forest machines is wear of their working surfaces. The destruction of the contact surfaces of bevel gears front axle of skidder TTP-401 during its operation is usually
M. N. Pischov, S. E. Belskiy, E. P. Andreykovets   +2 more
doaj  

Avaliação técnica e econômica de um "skidder" operando em diferentes produtividades e distâncias de extração Economic and technical evaluation of a ''skidder'' operation at various dragging distances and wood productivity of the operation

Ciência e Agrotecnologia, 2009
Este trabalho foi conduzido em povoamentos de eucalipto de uma empresa florestal do Estado de Goias, com o objetivo de avaliar técnica e economicamente o trabalho de um "skidder".
Sebastião Eudes Lopes, Haroldo Carlos Fernandes, Luciano José Minette, João Cleber Modernel da Silveira, Paula Cristina Natalino Rinaldi   +4 more
doaj   +1 more source

Early‐life high‐fat diet exposure increases Achilles tendon stiffness and induces transcriptomic alterations

FEBS Open Bio, EarlyView.
Early‐life exposure to a high‐fat diet altered intact Achilles tendons in rat offspring, making them thinner, stiffer, and molecularly distinct even without injury. These findings suggest that developmental high‐fat diet exposure may impair tendon quality and increase susceptibility to mechanical overload or tendon injury later in life.
Heyong Yin, Ziyang Yuan, Wenli Jiang, Ai Guo   +3 more
wiley   +1 more source

ANALYSIS OF RESIDUAL STRESSES IN THE HARDENED LAYER GEARS SKIDDERS CHEMICAL SINCE THE PROCESSING

Литьë и металлургия, 2015
The operating conditions of forest machines are analyzed. Transmission parts disabled as a result of intensive wear have been determined, their fracture mechanism has been established. A technique for diffuse impregnation of component parts with powdered
M. N. Pischov, E. P. Andreykovets
doaj  

Soil Bulk Density and Porosity Changes due to Ground-based Timber Extraction in the Hyrcanian Forest

Notulae Scientia Biologicae, 2013
Assessment and management of environmental impacts of forest harvesting activities, one of the main reasons is that its importance is increasing day by day.
Shoukuh SOLTANPOUR, Meghdad JOURGHOLAMI
doaj   +1 more source

Sudden anaerobization in Amphibacillus xylanus increases intracellular labile ferrous iron and inhibits cell growth

FEBS Open Bio, EarlyView.
Abruptly changing from aerobic to anaerobic conditions (sudden anaerobization) induced growth inhibition and a significant increase in intracellular labile ferrous iron in the aerotolerant anaerobe Amphibacillus xylanus. We found that free flavins mediate efficient electron transfer from NADH to ferric iron under anaerobic conditions, suggesting that ...
Shinya Kimata, Yoichi Sakai, Keisuke Tanaka, Etsuro Yoshimura, Ken Kitano, Morio Ishikawa, Tadahiro Nakamoto, Tsutomu Takayama, Hirofumi Inoue, Kaho Nomura, Tomonori Suzuki, Masataka Uchino, Akira Abe, Youichi Niimura   +13 more
wiley   +1 more source

RoundMi: A quantitative method to analyze mitochondrial morphology in mitotic cells

FEBS Open Bio, EarlyView.
RoundMi is a workflow for rapid analysis of mitochondrial morphology in mitotic cells. By combining adaptive preprocessing with automated segmentation and quantification, it enables accurate measurements from single focal plane images, reducing acquisition time and computational demands while remaining compatible with high‐throughput fixed and live ...
Elmira Parvindokht Bararpour, Christine Volmert, Valentina Piano   +2 more
wiley   +1 more source

Utilization of fleet management system for performance analysis and CO2 emissions during skidding operations in Western Carpathians

Frontiers in Forests and Global Change
IntroductionGathering and analyzing the operational parameter information from the timber extraction operation enables to study the impact of several factors on machine productivity, fuel consumption, and carbon dioxide (CO2) emissions.
Michal Allman, Tomi Kaakkurivaara, Tomi Kaakkurivaara, Martin Jankovský, Jan Merganič, Zuzana Dudáková   +5 more
doaj   +1 more source