Results 131 to 140 of about 187,216 (375)

Hydrogen-bonding chain and dimer motifs in pyridinium and morpholinium hydrogen oxalate salts

Acta Crystallographica Section E: Crystallographic Communications, 2018
We present here three compounds consisting of pyridinium or morpholinium hydrogen oxalates, each displaying different hydrogen-bonding motifs, resulting in chains for 4-(dimethylamino)pyridinium hydrogen oxalate 0.22-hydrate, C7H11N2+·C2HO4−·0.22H2O (1),
David Z. T. Mulrooney, Eimear C. Madden, Rhona F. Lonergan, Valentyna D. Slyusarchuk, Helge Müller-Bunz, Tony D. Keene   +5 more
doaj   +1 more source

Enantioselective Alkoxycarbonyl‐Lactonization of Alkenes via the Merger of Photoredox and Copper Catalysis

Advanced Science, EarlyView.
A highly enantioselective alkoxycarbonyl‐lactonization of alkenes is reported through a photoredox/copper dual‐catalyzed alkoxycarbonyl radical addition/cyclization reaction. Abstract The synthesis of ester derivatives represents one of the most significant and fundamental tasks in modern organic chemistry, and numerous methods have been developed in ...
Yuping Xiong, Zhipeng Zong, Wenlin Xie, Jian‐Qiang Chen, Xiaoyu Zhou, Jie Wu   +5 more
wiley   +1 more source

Plasma metabolomics reveals risk factors for lung adenocarcinoma

Frontiers in Oncology
BackgroundMetabolic reprogramming plays a significant role in the advancement of lung adenocarcinoma (LUAD), yet the precise metabolic changes remain incompletely understood. This study aims to uncover metabolic indicators associated with the progression
Mengjie Yu, Wei Wen, Yue Wang, Xia Shan, Xin Yi, Wei Zhu, Jiye Aa, Guangji Wang   +7 more
doaj   +1 more source

Estimation of Isotherm Parameters: A Simple and Cost-effective Procedure

Frontiers in Environmental Science, 2015
Equilibrium models used for predicting phosphorus (P) loss from a site often use the Langmuir strength of P bonding, KL and the P sorption maximum, Smax, or the Freundlich adsorption coefficient, KF, obtained from traditional isotherms, as model input ...
Biswanath eDari, Vimala eNair, James eColee, Willie eHarris, Rao eMylavarapu   +4 more
doaj   +1 more source

Drug treatment of intermittent claudication [PDF]

, 1994
Intermittent claudication is a major presenting manifestation of chronic obstructive peripheral arterial disease of the lower limbs. The goals of treatment in the absence of rest pain are relief of symptoms, improvement in walking distance and prevention
Attard, Alex R.
core  

Advances in High‐Entropy Catalysts for Lithium–Sulfur Batteries: Design Principles, Recent Progress, and Prospects

Advanced Science, EarlyView.
This review highlights recent progress in high‐entropy catalysts for Lithium–sulfur (Li–S) batteries, covering their structural features, catalytic functions, synthesis strategies, and representative material systems, including high‐entropy alloys, oxides, nitrides, sulfides, phosphides, and MXene. Challenges and future directions are also discussed to
Ruohan Hou, Yixin Wei, Jiaxiang Zhang, Jiaying Chen, Shaojie Chen, Shuaiting Sun, Guosheng Shao, Peng Zhang   +7 more
wiley   +1 more source

Toward Complete CO2 Electroconversion: Status, Challenges, and Perspectives

Advanced Energy Materials, EarlyView.
Electrocatalytic CO2 reduction and CO2 batteries face challenges in achieving complete CO2 conversion with high conversion rates and Faradaic efficiency simultaneously. Existing systems compromise one for the other with incomplete CO2 conversion and inefficiencies, hindering practical applications. This perspective highlights state‐of‐the‐art progress,
Changfan Xu, Ping Hong, Yulian Dong, Marc Robert, Guosheng Shao, Yong Lei   +5 more
wiley   +1 more source

Oxalate contents in leaves of two rice cultivars grown at a free-air CO2 enrichment (FACE) site

Plant Production Science, 2019
Rice straw can be used as a feed for livestock. It accumulates soluble oxalate, which is harmful to livestock as it can cause mineral deficiency. It is therefore necessary to reduce the oxalate content in rice leaves so that the usage of rice straw for a
Atsuko Miyagi, Ko Noguchi, Takeshi Tokida, Yasuhiro Usui, Hirofumi Nakamura, Hidemitsu Sakai, Toshihiro Hasegawa, Maki Kawai-Yamada   +7 more
doaj   +1 more source

Gut microbiota and oxalate homeostasis.

Annals of Translational Medicine, 2017
This perspective focuses on how the gut microbiota can impact urinary oxalate excretion in the context of hyperoxaluria, a major risk factor in kidney stone disease.
M. Hatch
semanticscholar   +1 more source

Patterns of oxalate metabolism in recurrent oxalate stone formers

Kidney International, 1974
Patterns of oxalate metabolism in recurrent oxalate stone formers. The concentration of oxalate in the blood (isotopic procedure), the renal clearance of oxalate, the rate of 14C-oxalate excretion in the urine and the intestinal absorption of 14C-oxalate were used as indexes to classify different disturbances of oxalate metabolism in recurrent oxalate ...
Bernardo Pinto, F. Solé-Balcells, G. Crespí, P. Barceló   +3 more
openaire   +3 more sources