Results 111 to 120 of about 8,356 (228)

Transducers Across Scales and Frequencies: A System‐Level Framework for Multiphysics Integration and Co‐Design

open access: yesAdvanced Materials Technologies, EarlyView.
Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu   +8 more
wiley   +1 more source

Research regarding changes in concept image through introduction activity of formal definition for limit of sequences : based on college freshmen preservice teachers

open access: yes, 2011
교실 상황에서 학생들에게 있어 교사의 영향은 매우 큼은 부정할 수 없는 사실이다. 일반적으로, 수학을 전공한 교사는 학교에서 가르칠 때 매우 정확한 수학적 지식을 지니고 있을 것이라 기대하지만 이는 섣불리 단정 지을 수 없는 부분이라 할 수 있다. 교사가 되기 위해 사범대학에 진학하여 준비하고 있는 예비교사에 대한 연구는 교사의 질의 향상을 위해 필수적이다. Shulman(1986)은 특정 내용을 특정 학생들의 이해를 촉진할 수 있도록 가르치는 방법에
손시영
core  

Flexible Chemiresistive Chitosan‐Glycerol Sensors on Laser‐Induced Graphene Electrodes for Room‐Temperature Ammonia Detection

open access: yesAdvanced Materials Technologies, EarlyView.
Flexible Chitosan‐glycerol sensor integrated with porous laser‐induced graphene (LIG) electrodes enable room‐temperature chemiresistive detection of ammonia (NH3) and proof‐of‐concept detection of fish spoilage. ABSTRACT We report a metal‐free sensor platform combining laser induced graphene (LIG) electrodes with drop‐deposited, glycerol‐plasticized ...
Mintesinot Tamiru Mengistu   +9 more
wiley   +1 more source

The role of cone volatiles and thermogenesis in the pollination of Encephalartos cycads with particular reference to E.villosus

open access: yes, 2011
Includes abstract.Includes bibliographical references.Pollination systems of cycads usually involve obligate mutualisms in which the cycad taxa depend on between one and three insect pollinators.
Suinyuy, Terence Nkwanwir
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High‐Power Rapid Laser‐Induced Synthesis of Multi‐functional Cobalt Metal‐Organic Framework With an Unprecedented Synthesis Efficiency

open access: yesAdvanced Materials Technologies, EarlyView.
Laser‐assisted synthesis enables rapid (within 1 h) and high‐yield (≥90%) production of Co‐MOFs with mesoporous structures, tunable magnetic and optical properties, and efficient adsorption of N2, CH4, and CO2 for low‐energy gas separation. DFT calculations elucidate the electronic structure and adsorption behavior.
Saliha Mutlu   +10 more
wiley   +1 more source

Thickness‐Dependent Infrared Emissivity of Ultrathin Freestanding MoSiN Nanocomposite Membranes

open access: yesAdvanced Optical Materials, EarlyView.
ABSTRACT Metals and dielectrics show opposite trends in thickness‐dependent infrared emissivity: metallic films exhibit a rise in emissivity below a critical thickness, while dielectric films show a corresponding decline. For applications demanding both high emissivity and mechanical strength in membranes with nanoscale thickness, combining these ...
Reethu Sebastian   +3 more
wiley   +1 more source

Data‐Efficient Electromagnetic Surrogate Solver Through Dissipative Relaxation Transfer Learning

open access: yesAdvanced Optical Materials, EarlyView.
Dissipative relaxation transfer learning (DIRTL) enables data‐efficient training of electromagnetic surrogate solvers by pretraining data generated with artificial material loss before fine‐tuning on target lossless data. The framework suppresses resonant outlier effects during early training, allowing effective adaptation to high‐amplitude resonances ...
Sunghyun Nam   +2 more
wiley   +1 more source

Functional morphology of marsupial moles (Marsupialia: Notoryctidae)

open access: yes, 2006
Marsupial moles (genus Notoryctes) are the most highly specialised burrowing marsupials. The specialisations of the appendicular musculo-skeletal system of the marsupial moles are extensive and widespread; the major alterations are concentrated in, but ...
Warburton, N.M.
core  

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