Results 131 to 140 of about 2,948,019 (406)

“If You Are Old Enough to Die for Your Country, You Should Be Able to Get a Pinch of Snuff”: Views of Tobacco 21 Among Appalachian Youth [PDF]

open access: yes, 2018
Background: Multiple strategies have been utilized in attempts to decrease the prevalence of youth tobacco use. One strategy, raising the minimum legal sale age (MLSA) of tobacco products to 21, known as Tobacco 21, has recently gained popularity ...
Bhatnagar, Aruni   +5 more
core   +2 more sources

High Performance Flexible Optical Fiber Sensor Enabled by Er3+/Yb3+ Co‐Doped near Pure‐Green Upconversion Emission Phosphor for Implantable Temperature Sensing

open access: yesAdvanced Materials Interfaces, EarlyView.
A superior double‐cladding optical fiber temperature sensor (OFTS) is fabricated by utilizing a bright and stable near‐pure green UC phosphor NaLu(WO4)2:Er3+/Yb3+ as sensing material. The OFTS exhibits a high temperature measurement accuracy of 0.155°C at 303 K, excellent measuring repeatability and chemical stability, along with strong resistance to ...
Jing Lyu   +4 more
wiley   +1 more source

Youth Homelessness in San Francisco: 2014 Report on Incidence and Needs [PDF]

open access: yes, 2015
It is estimated that 353,000-503,000 youth ages 12-24 are homeless on any given day in the United States (Burt, 2007). Homeless youth are without a place to call homethey sleep at night in parks, their cars, abandoned buildings.

core  

Positive for youth work? Contested terrains of professional youth work in austerity England [PDF]

open access: yes, 2014
© 2014 Taylor & Francis. This article is available open access through the publisher’s website at the link below.This article considers professional youth work in England.
Jeffs T.   +3 more
core   +2 more sources

Trapped Fluorine Enables Thermally Stable Broadband Photodetection in Graphene/Fluorinated Graphene Heterostructure

open access: yesAdvanced Materials Technologies, EarlyView.
Fluorinated graphene has opened new opportunities for real‐world applications; however, its working and thermal stability are key issues for practical use. This study successfully demonstrates the stability of a fluorinated graphene‐based photodetector, achieved through a graphene, fluorinated graphene heterostructure (Gr/F‐Gr HS).
Mukesh Kumar Thakur   +11 more
wiley   +1 more source

Implementation of integrated disease surveillance and response systems in West Africa: lessons learned and future directions

open access: yesBMJ Health & Care Informatics
The Integrated Disease Surveillance and Response (IDSR) framework, introduced by the WHO in 1998, aimed to unify disease surveillance across West Africa, replacing fragmented systems.
Stanley Chinedu Eneh   +7 more
doaj   +1 more source

Foster Parent Training for the Delivery of Independent Living Skills [PDF]

open access: yes, 2013
Master's Project (M.Ed.) University of Alaska Fairbanks, 2013Although training is made available to foster parents when they volunteer to share their homes with children in need, the required ten hours for single parents and fifteen hours for coupled ...
Alley, Kandy
core  

Energy Consumption Optimization in Trajectory Planning for Fuel Cell Hybrid Uavs Based On HMPC

open access: yesAdvanced Robotics Research, EarlyView.
The endurance limitation of multirotor drones is a critical challenge. This study adopts a hybrid power system of fuel cells and lithium‐ion batteries. Using Nondominated Sorting Genetic Algorithm II, it integrates trajectory planning with energy management optimization.
Xindi Wang   +7 more
wiley   +1 more source

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