Results 41 to 50 of about 436,985 (342)

Synthesis and characterisation of controllably functionalised polyaniline nanofibres [PDF]

open access: yes, 2009
A novel method for functionalising solution based polyaniline (PAni) nanofibres is reported whereby the degree of side-chain attachment can be controllably altered.
Acevedo   +49 more
core   +1 more source

NanoMOF‐Based Multilevel Anti‐Counterfeiting by a Combination of Visible and Invisible Photoluminescence and Conductivity

open access: yesAdvanced Functional Materials, EarlyView.
This study presents novel anti‐counterfeiting tags with multilevel security features that utilize additional disguise features. They combine luminescent nanosized Ln‐MOFs with conductive polymers to multifunctional mixed‐matrix membranes and powder composites. The materials exhibit visible/NIR emission and matrix‐based conductivity even as black bodies.
Moritz Maxeiner   +9 more
wiley   +1 more source

Venous circulation and William Harvey: A historical review

open access: yesVascular Investigation and Therapy, 2019
Greco–Roman concepts regarding the circulation persisted until the 1600s even though many were incorrect. It was held that blood flows in veins from the liver to the periphery where it is consumed.
Kenneth Myers
doaj   +1 more source

In dogs undergoing anaesthesia do pre-anaesthetic gastroprotectants reduce gastro-oesophageal reflux?

open access: yesVeterinary Evidence, 2020
PICO question In dogs undergoing anaesthesia do pre-anaesthetic gastroprotectants reduce gastro-oesophageal reflux?   Clinical bottom line Category of research question Treatment The number and type of study designs reviewed Five ...
Leanne Barry
doaj   +1 more source

Multiple Steady States in Heterogeneous Azeotropic Distillation [PDF]

open access: yes, 1994
In this article we study multiple steady states in ternary heterogeneous azeotropic distillation. We show that in the case of infinite reflux and an infinite number of trays one can construct bifurcation diagrams on physical grounds with the distillate ...
Bekiaris, Nikolaos   +2 more
core  

The esophagogastric junctional adenocarcinoma an increasing disease [PDF]

open access: yes, 2017
Identifying and defining the esophagogastric junctional adenocarcinoma (EGJA) as an independent disease apart from gastric cancer (GC) and esophagus cancer (EG) it has always been a difficult issue entailing doubts about the appropriate therapeutic ...
Andreetti, Claudio   +3 more
core   +1 more source

MnI‐Functionalized Covalent Organic Framework as Efficient Electrocatalyst for CO2 Reduction in a Catholyte‐Free Zero‐Gap Electrolyzer

open access: yesAdvanced Functional Materials, EarlyView.
This work demonstrates the successful integration of a phenanthroline‐based 2D COF with MnI catalytic sites into a catholyte‐free membrane‐electrode‐assembly cell for CO2 electroreduction. The crystalline COF actively suppresses Mn⁰–Mn⁰ dimerization, achieving a turnover frequency of 617 h⁻¹ at 2.8 V (full‐cell potential), and enabling stable operation.
Laura Spies   +8 more
wiley   +1 more source

Preparasi Karbon Aktif Sekam Padi dan Serbuk Gergaji Kayu Jati melalui Proses Refluks sebagai Adsorben Larutan Multi Ion Fe(II)/Cu(II)

open access: yesAlchemy
Sekam padi dan serbuk gergaji kayu jati merupakan bahan berlignoselulosa yang berpotensi sebagai bahan karbon aktif. Penelitian ini bertujuan untuk menentukan pengaruh proses refluks terhadap karakter karbon aktif sekam padi (RHAC) dan serbuk gergaji ...
Cucun Alep Riyanto   +10 more
doaj   +1 more source

Cu2ZnSnS4 synthesized through a low-cost reflux method

open access: yesNanotechnology Reviews, 2015
The chalcopyrite semiconductors belonging to the I2-II-IV-VI4 class are emerging as promising absorber materials for photovoltaic applications. Among them, Cu2ZnSnS4 (CZTS) has been gaining importance due to its high absorption coefficient and optimum ...
Aditha Sai Kiran   +4 more
doaj   +1 more source

IDENTIFICATION AND DETERMINATION OF SAPONIN CONTENT FROM EXTRACT OF Embelia borneensis BARK

open access: yesAl-Ulum, 2023
Embelia borneensis known sekilang used by the Dayak Kenyah tribe of Long Temuyat Village, Malinau, North Kalimantan as a fish poison and leech repellent. Sekilang bark extract contains alkaloids, tannins, saponins and flavonoids compounds. The purpose of
Titin Murtiningsih   +2 more
doaj   +1 more source

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