Results 111 to 120 of about 1,208,588 (320)

On the ring structure of K∗ for discrete groups

open access: yesTopology and its Applications, 1998
The author considers a discrete group \(\Gamma\) of finite cohomological dimension and finds a rational splitting for its classifying space. This is based on the multiplicative formula due to T.~tom Dieck describing a rational splitting for \(G\)-equivariant \(K\)-theory for groups of considered type.
openaire   +2 more sources

Controlled Aggregation of Pyrene‐Based Supramolecular Nanostructures for Light‐Driven Switchable H2 or H2O2 Production

open access: yesAdvanced Functional Materials, EarlyView.
This work reports the self‐assembly of a pyrene derivative into two distinct nanostructures and their application in visible‐light photocatalysis. The two nanostructures exhibit completely different yet complementary photocatalytic activities, promoting either H2 or H2O2 evolution.
Marianna Barbieri   +6 more
wiley   +1 more source

NEW ORGANO-AND HALOTIN (IV) WITH EDTA: SYNTHESIS AND INFRARED STUDY

open access: yesScientific Study & Research: Chemistry & Chemical Engineering, Biotechnology, Food Industry, 2015
Nine acidic or neutral ethylenediaminetetraacetato [H2Y2-, H3Y- or Y4-] containing adducts and derivatives have been synthesized and studied by infrared.
SERIGNE CISSE   +2 more
doaj  

Localization of bone sialoprotein (BSP) to Golgi and post-Golgi secretory structures in osteoblasts and to discrete sites in early bone matrix. [PDF]

open access: bronze, 1993
P. Bianco   +6 more
openalex   +1 more source

Sonication‐Assisted Palladium Nanogaps in a Capacitive Structure: A Tunable and Reliable Solution for Sensitive Hydrogen Monitoring

open access: yesAdvanced Functional Materials, EarlyView.
This study presents a capacitive hydrogen sensor with a simple structure and process. Sonication‐induced Pd nanogaps modulate the effective electrode area in response to hydrogen concentration, resulting in capacitance changes within a range predefined by physical parameters.
Sang‐kil Lee   +9 more
wiley   +1 more source

Zn2(Y)·H2O, (Me4N)2H2Y·3ZnCl2, (Me4N)4Y·5ZnCl2·H2O, (BzNMe3)2H2Y·2ZnBr2, Zn(H2Y)·4ZnCl2·2EtOH·14H2O AND Zn(H2Y)·6ZnCl2·2EtOH·6H2O (Y = EDTA): SYNTHESIS AND INFRARED STUDY

open access: yesScientific Study & Research: Chemistry & Chemical Engineering, Biotechnology, Food Industry, 2015
Six acidic or neutral ethylenediaminetetraacetato [H2Y2-, H3Y- or Y4-] containing adducts and derivatives have been synthesized and studied by infrared.
SERIGNE CISSE   +2 more
doaj  

Symplectic Structure of Discrete Hamiltonian Systems

open access: yesJournal of Mathematical Analysis and Applications, 2002
The author considers the discrete Hamiltonian system \[ \Delta x(t)= H_u(t,x(t+1),u(t)), \qquad \Delta u(t)= -H_x(t,x(t+1),u(t)), \tag{1} \] where \(x,u\in \mathbb R^d\), \(H(t,x,u)\) is the corresponding real Hamiltonian function having continuous derivatives in \(x\), \(u\).
openaire   +3 more sources

Conformally Perforated Shellular Metamaterials with Tunable Thermomechanical and Acoustic Properties

open access: yesAdvanced Functional Materials, EarlyView.
This study introduces Conformally Perforated Shellular Metamaterials (CPSMs), which overcome TPMS design limitations by mapping 2D cellular layouts onto 3D surfaces. CPSMs exhibit enhanced elastic stiffness, thermal conductivity, and acoustic performance compared to intact P‐type shellulars, demonstrating their potential as multifunctional ...
Benyamin Shahryari   +8 more
wiley   +1 more source

NEW [SnR2(C2O4)2]2- (R = Ph, Bu) MOIETY CONTAINING ADDUCTS AND COMPLEXES: SYNTHESIS, INFRARED AND MOSSBAUER STUDIES

open access: yesScientific Study & Research: Chemistry & Chemical Engineering, Biotechnology, Food Industry, 2015
New oxalato and hydrogenoxalato organotin (IV) derivatives containing mono- and bichelating oxalates or a monochelating hydrogenoxalate, have been synthesized and characterized by elemental analyses, infrared and Mossbauer spectroscopy.
YAYA SOW, LIBASSE DIOP
doaj  

Battery‐Free, Wireless Multi‐Sensing Platform for Comprehensive Management of Pressure Injury and Hygiene

open access: yesAdvanced Functional Materials, EarlyView.
A battery‐free, wireless device for real‐time monitoring of pressure injury and hygiene integrates pressure (≈10 kPa), temperature (≈40 °C), and NH3 gas sensing with antibacterial functionality. Enabled by near‐field communication, it ensures simultaneous, interference‐free mechanical and chemical monitoring, offering a practical solution for pressure ...
Myungwoo Choi   +19 more
wiley   +1 more source

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