Results 61 to 70 of about 2,245,823 (298)

A Facile Synthesis of Polysubstituted Pyrroles by One-Pot Three-Component Reaction

E-Journal of Chemistry, 2012
A new and efficient one-pot synthesis of polysubstituted pyrrole derivatives by three-component reaction between dialkyl acetylenedicarboxylates, triphenylphosphine, 2-aminopyridin derivatives in the presence of arylglyoxals is described.
Hossein Anaraki-Ardakani, Maziar Noei, Mina Karbalaei-Harofteh, Shahab Zomorodbakhsh   +3 more
doaj   +1 more source

Early contingentnegative variation of the EEG and attentional flexibility are reduced in hypotension [PDF]

, 2002
This study explored the question as to whether hypotension is related to decreased attentional performance and reduced cortical activation. A total of 50 females aged 19 44 years participated in the study. Attentional performance was assessed using three
Duschek, Stefan, Jacobs, Arthur M., Mialet, Jean-Paul, Schandry, Rainer, Weisz, Nathan   +4 more
core   +1 more source

Dietary Protein Intake and Peritoneal Protein Losses in Peritoneal Dialysis Patients

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction Peritoneal dialysis (PD) patients lose protein in their waste dialysate, potentially increasing their risk for malnutrition. We wished to determine whether there was any association between losses and dietary protein intake (DPI). Methods DPI was assessed from 24‐h dietary recall using Nutrics software.
Haalah Shaaker, Andrew Davenport
wiley   +1 more source

Microwave-Assisted Three Component Cyclocondensation Reaction: A Facile Synthesis of Highly Functionalized Cyclohexene Derivatives [PDF]

Iranian Journal of Chemistry & Chemical Engineering, 2007
Microwave-assisted three component cyclocondensation reactions of aldehydes, amides and dienophiles in the presence of acetic anhydride and para-toluenesulfonic acid as a catalyst to afford the highly substituted cyclohexene derivatives, in relatively ...
Ahmad Shaabani, Peiman Mirzaei
doaj  

Facile Synthesis of Functionalized Spiropyrrolizidine Oxindoles via a Three-Component Tandem Cycloaddition Reaction

Molecules, 2011
An efficient synthesis of functionalized spiropyrrolizidine oxindoles via a three-component tandem cycloaddition has been achieved. This strategy can provide direct and rapid access to spiropyrrolizidine oxindoles in high yields (up to 99%) with ...
Tai-Ran Kang, Ting-Ting Yan, Jie Liu, Hong-Bao Sun, Yong-Mei Xie, Yu-Qin Yao   +5 more
doaj   +1 more source

A Novel Indium-Catalyzed Three-Component Reaction: General and Efficient One-Pot Synthesis of Substituted Pyrroles [PDF]

, 2011
A convenient and general approach towards the synthesis of substituted pyrroles from propargylic acetates, silyl enol ethers, and primary amines was described. This novel transformation was catalyzed by indium trichloride in a one-pot synthesis, and high
Hao, Lu, Lin, Min, Ma, Rui-da, Zhan, Zhuang-ping, 詹庄平   +4 more
core   +1 more source

Effects of the Fluid Replacement Method During Online Hemodiafiltration on the Solute Removal Performance and Biocompatibility Using the Asymmetric Cellulose Triacetate Membrane

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction Pre‐dilution online hemodiafiltration (Pre‐HDF) is predominantly used in Japan, whereas post‐dilution online HDF (Post‐HDF) is more common in Europe. An asymmetric cellulose triacetate (ATA) membrane may improve biocompatibility.
Kenji Sakurai, Yoshitaka Kurihara, Fumi Yamauchi, Hiromi Hosoya, Takeshi Saito   +4 more
wiley   +1 more source

On the Formation of CO2 and Other Interstellar Ices

, 2011
We investigate the formation and evolution of interstellar dust-grain ices under dark-cloud conditions, with a particular emphasis on CO2. We use a three-phase model (gas/surface/mantle) to simulate the coupled gas--grain chemistry, allowing the ...
Garrod, Robin T., Pauly, Tyler
core   +1 more source

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

FEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

Existence and Stability of a Spike in the Central Component for a Consumer Chain Model [PDF]

, 2015
We study a three-component consumer chain model which is based on Schnakenberg type kinetics. In this model there is one consumer feeding on the producer and a second consumer feeding on the first consumer.
A Doelman, A Doelman, A Doelman, AM Turing, D Iron, DL Benson, EN Dancer, H Meinhardt, H Meinhardt, J Liu, J Schnakenberg, J Wei, J Wei, J Wei, J Wei, J Wei, J Wei, J Wei, J Wei, J Wei, J Wei, J Wei, J Wei, JD Murray, Juncheng Wei, L Bettencourt, M Eigen, M Eigen, M Eigen, M Eigen, Matthias Winter, MJ Ward, P Gray, P Gray, T Kolokolnikov, T Kolokolnikov, W-M Ni, W-M Ni, W-M Ni, Y Nishiura, Y Nishiura   +40 more
core   +2 more sources