Results 51 to 60 of about 985,673 (310)

Sliding doors

Revista Brasileira de Ensino de Física
Looking closely to the mechanism which make sliding doors move, one sees that the motion of the commonly used objects can be understood by solving a problem related to the motion of blocks and pulleys.
Roberto De Luca
doaj   +1 more source

Centerline latch tool for contingency orbiter door closure [PDF]

, 1982
The centerline latch tool was designed and developed as an EVA manual backup device for latching the Space Shuttle Orbiter's payload bay doors for reentry in case of a failure of the existing centerline latches to operate properly.
Trevino, R. C.
core   +1 more source

Tuning the Dielectric Properties of Individual Clay Nanosheets by Interlayer Composition: Toward Nano‐Electret Materials

Advanced Functional Materials, EarlyView.
The dielectric properties of clays are studied on the level of individual monolayers and functional double stacks. The material breakdown characteristics and charge storage performance are analyzed. For illustration, a defined charge pattern representing a cuneiform character is produced, written into a microscopic clay tile, referencing the origins of
Sebastian Gödrich, Paul Markus, Matthias Stöter, Bernhard Biersack, Rainer Schobert, Josef Breu, Georg Papastavrou   +6 more
wiley   +1 more source

THE QUESTION OF DOORS

International Journal of Child, Youth & Family Studies, 2012
This paper will argue that child and youth care is a kind of social diagram that maps the relations of children and adults. It will propose that residential care in particular, when thought of as a machinic social diagram, has certain characteristics ...
Hans Skott-Myhre
doaj   +1 more source

Photoswitching Conduction in Framework Materials

Advanced Functional Materials, EarlyView.
This mini‐review summarizes recent advances in state‐of‐the‐art proton and electron conduction in framework materials that can be remotely and reversibly switched on and off by light. It discusses the various photoswitching conduction mechanisms and the strategies employed to enhance photoswitched conductivity.
Helmy Pacheco Hernandez, Stefan Hecht, Wolfgang Wenzel, Lars Heinke, Mariana Kozlowska   +4 more
wiley   +1 more source

Opening Doors

Persona Studies
Traditionally, political affiliation has proven to be one of the most fruitful mechanisms to create division and derision amongst the voting masses. So polarising is the topic of politics that it has coined its own phrase – political divide. Drawing from
Natalie Le Clue
doaj   +1 more source

Unusual Swelling Behavior of Hydrogels Modified with Spiropyran as Appendage or Crosslinker

Advanced Functional Materials, EarlyView.
Not so innocent after all—spiropyran crosslinkers in methylenebisacrylamide‐crosslinked poly(acrylamide‐co‐acrylic acid) hydrogels increase crosslinking density, but also, counterintuitively, increase swelling. Charge complexation, cooperative chemo‐mechanical effects, and aggregation may explain these observations.
Michael M. Lerch, Ankita Shastri, Thomas B. H. Schroeder, Amos Meeks, Shucong Li, Anna V. Shneidman, Michael Aizenberg, Joanna Aizenberg   +7 more
wiley   +1 more source

Timing Design and Commissioning Scheme for Linkage between Urban Rail Transit Electric Passenger Car Doors and Platform Doors

Chengshi guidao jiaotong yanjiu
Objective Realizing the synchronous linkage between electric passenger car doors and platform doors (hereinafter referred to as "car-platform doors") in urban rail transit can further improve the metro operation efficiency, so it is necessary to study ...
WANG Li, GAO Xin, ZHAO Na
doaj   +1 more source

Robust and Reversible Thermofluorescence in Solvent‐Free Thermoplastic Polyurethane Composites

Advanced Functional Materials, EarlyView.
Thermofluorescent polymer composites with high‐contrast optical outputs are prepared by solvent‐free blending of indenoquinacridone dye into a thermoplastic polyurethane matrix. The temperature‐dependent fluorescence originates from aggregation–dissociation of the dye molecules, regulated by competing hydrogen bonds from the polymer matrix.
Guanghua Yu, Bowen Tian, Jazmine Aiya Marquez, Chia‐Min Hsieh, Qingsheng Wang, Hung‐Jue Sue, Mohammed Al‐Hashimi, Peiran Wei, Lei Fang   +8 more
wiley   +1 more source

The role of community health workers in re-entry of people with HIV and substance use disorder released from jail: a mixed methods evaluation of a pilot study

Health & Justice
Background Incarcerated individuals face high rates of mental illness, substance use disorders and communicable diseases including HIV, with increased health complications and mortality in the early post-release period.
Afeefah Khazi-Syed, Emily Hoff, Maverick Salyards, Laura Hansen, Nicholas Campalans, Zoe Pulitzer, Christina Melton Crain, Hue Nguyen, Shira Shavit, Robrina Walker, Ank E. Nijhawan   +10 more
doaj   +1 more source