Results 31 to 40 of about 66,347 (233)

GROUNDING THE REDUCTION OF POWER OF THE HYDRAULIC DRIVE ELECTRIC MOTOR BY EQUIVALENT POWER METHOD [PDF]

Avtomobilʹnyj Transport (Harʹkov), 2017
The authors have analyzed the power consumption by a hydraulic drive and wound rotor motor of crane mechanisms at all stages of the operational cycle: acceleration, movement at nominal or intermediate speed and deceleration.
O. Hrygorov, V. Stryzhak, D. Ziubanova, M. Tsebrenko, M. Stryzhak   +4 more
doaj  

An experimental study of the efficiency of optimal control for lifting machines [PDF]

, 2019
The article is devoted to the synthesis of optimal speed performance control, in which the Pontryagin maximum principle and the phase-plane method are used to search for switching points of the relay control function.
Anishchenko, Galina, Grigorov, Otto, Okun, Anton, Strizhak, Marjana, Strizhak, Vsevolod   +4 more
core  

Assessing the viability of genebanked seeds from rare, wild plants native to the United States using the D.E.A.D. paradigm

Applications in Plant Sciences, EarlyView.
Abstract Premise Genebanks must maintain viable seeds for decades. Seeds that germinate are clearly alive, but some seeds, often from wild populations, do not germinate because they are dormant, empty, aged, or damaged (D.E.A.D.). This work evaluates the effects of D.E.A.D.
Christina Walters, Lisa M. Hill, Katherine D. Heineman, Hannah M. Tetreault, Shaimaa Ibrahim, Katherine Markstein, Cheryl Birker, Kris Freitag, Dustin Wolkis, Michael Kunz, Sheila Murray, Nathaniel Kingsley, Alexandra Seglias, Nicholas Matsumoto, Thomas N. Kaye, Cheryl Peterson, Matthew A. Albrecht, Noah Dell, Stacy Anderson, Steve Blackwell, David Remucal, Wendy Gibble, Anita Tiller, Emily Coffey, Jason Ligon, Laurie Blackmore, Carrie Radcliffe, Heather E. Schneider, Kristen Nelson, David Sollenberger, Jessamine Finch, Kate Wellspring, Robert Jetton, Joyce Maschinski   +33 more
wiley   +1 more source

Animal‐mediated seed dispersal: A review of study methods

Applications in Plant Sciences, EarlyView.
Abstract By dispersing seeds, animals provide ecological functions critical for the ecology, evolution, and conservation of plants. We review quantitative and empirical approaches and emerging technologies to quantify processes and patterns of animal‐mediated seed dispersal (zoochory) across its phases: from predispersal to postdispersal.
Noelle G. Beckman, Erin K. Kuprewicz, Binod Borah, James M. Bullock, Amanda S. Gallinat, Juan P. González‐Varo, Abir Jain, Jun Ying Lim, Carina I. Motta, Omer Nevo, Haldre S. Rogers   +10 more
wiley   +1 more source

Payload Oscillations Minimization via Open Loop Control. [PDF]

, 2017
The results of tests of payload oscillations, forced by linear control function which allows to minimize payload sway after acceleration phase and after overhead crane stopping are presented in this paper.
Kosucki, Andrzej
core  

Exploring Alexithymia, Uncertainty, Anxious Arousal, and Social Anxiety as Mediators of the Relationship Between Sensory Processing Differences and Restricted and Repetitive Behaviors in Autistic Adults

Autism Research, EarlyView.
ABSTRACT Restricted and repetitive behaviors (RRB) are associated with sensory processing (SP) differences for autistic people, and are thought to be a coping strategy to help manage the sensory environment. Previous work shows that, for autistic people, alexithymia, intolerance of uncertainty (IU), and anxiety mediate the relationship between SP ...
Heather L. Moore, Samuel Brice, Natalya Spraggon, Barry Ingham, Mark Freeston, Jeremy R. Parr, Jacqui Rodgers   +6 more
wiley   +1 more source

Motion of cranes of bridge type simulation in the MS Excel environment [PDF]

, 2014
The idle times of the crane caused by need of replacement of wheels, can have critical value for functioning of a logistic chain. In article the task about the movement of the crane with a skew with the accounting of several mutually influencing ...
Grigorov, Otto, Stepochkina, Olga
core  

Mindfulness and resilience: The experiences of global majority students in a mindfulness intervention Programme at a UK university

British Educational Research Journal, EarlyView.
Abstract Wellbeing in higher education (HE) in the United Kingdom has been increasingly prioritised for many institutions, with a growing demand for student support requests. There are various determinants in life that can influence mental health. As such, protected characteristics, including race, can indicate that students who are Black or Asian ...
Amy Bywater, Helen Keane
wiley   +1 more source

Calculation of the Required Power of Electric Motors for Overhead Crane Movement Mechanisms Using the Statistical Method

Problems of the Regional Energetics
The aim of this study is to determine the functional dependence for the calculation of the re-quired power of the electric motor of the traveling mechanism of the overhead traveling crane on the load capacity and span. The set aim is achieved by solving the following problems: figur-ing out how to calculate the power of the electric motor of the ...
Kovalenko V., Zhuravel O., Strizhak V., Iglin S., Strizhak M.   +4 more
openaire   +4 more sources

Early evolutionary history of the seed

Biological Reviews, EarlyView.
ABSTRACT The seed is an essential stage in the life history of gymnospermous and angiospermous plants, facilitating both their survival and dispersal. We reappraise knowledge of the evolutionary history of the gymnospermous seed, from its origin in the late Devonian through to the well‐known end‐Permian extinctions – an interval encompassing the ...
Richard M. Bateman, Alan R. T. Spencer, Jason Hilton   +2 more
wiley   +1 more source