Results 111 to 120 of about 140,535 (311)

Overview of Encapsulated Lysine and Methionine and Their Impacts on Transition Cow Performance and Health

Animal Research and One Health, EarlyView.
The transition period in dairy cows, spanning 3 weeks before and after calving, is a critical phase characterized by increased nutrient demands, reduced dry matter intake (DMI), and elevated risk of metabolic disorders such as negative nutrient balance (NNB), lipolysis, proteolysis, and oxidative stress.
Mohammed S. Seleem, Samy A. Elsaadawy, Zhaohai Wu, Lu Ma, Todd R. Callaway, Dengpan Bu   +5 more
wiley   +1 more source

Hepatotoxicity of Nonesterified Fatty Acids to Dairy Cows: Pathophysiological Mechanisms and Prospective Solutions

Animal Research and One Health, EarlyView.
Unregulated inflammation increases non‐esterified fatty acids (NEFAs), and triggers multi‐pathway hepatocyte damage including oxidative stress, mitochondrial dysfunction, and metabolic disorders in dairy cows. ABSTRACT Circulating concentrations of nonesterified fatty acids (NEFAs) are elevated due to lipid mobilization from adipose tissue in ...
Siqing Mao, Yuan Tian, Dan Li, Lei Tian, Hang Yu, Ziling Liu, Xin Gao, Yanqiong Wen, Fachun Wan, Zuo Wang, Weijun Shen, Xinwei Li, Lei Liu   +12 more
wiley   +1 more source

Unexpected Accumulation of ncm\u3csup\u3e5\u3c/sup\u3eU and ncm\u3csup\u3e5\u3c/sup\u3es\u3csup\u3e2\u3c/sup\u3eU in a \u3cem\u3etrm9\u3c/em\u3e Mutant Suggests an Additional Step in the Synthesis of mcm\u3csup\u3e5\u3c/sup\u3eU and mcm\u3csup\u3e5\u3c/sup\u3es\u3csup\u3e2\u3c/sup\u3eU [PDF]

, 2011
Background Transfer RNAs are synthesized as a primary transcript that is processed to produce a mature tRNA. As part of the maturation process, a subset of the nucleosides are modified.
Anderson, James T., Byström, Anders S., Chen, Changchun, Huang, Bo   +3 more
core   +1 more source

Synthesis of trimethylolpropane trioleate by using stannous oxalate catalyst

Biofuels, Bioproducts and Biorefining, EarlyView.
Abstract This study was conducted to synthesize trimethylolpropane trioleate (TMPTO) using a stannous oxalate catalyst and investigate the dependence of the esterification rate on reaction variables. The highest esterification rate of approximately 99% was achieved at a 2.75:1 oleic acid/trimethylolpropane, 1.5% catalyst amount, 180°C reaction ...
Oguzhan Ilgen, Sumeyye Bilgic
wiley   +1 more source

Decreasing acid value of fatty acid ethyl ester products using complex enzymes

Frontiers in Bioengineering and Biotechnology
Recently, enzymatic method has been used to prepare biodiesel using various oils. But the high acid value of the biodiesel product using enzyme as a catalyst has been one issue. In this work, an attempt to reduce the acid value of fatty acid ethyl ester (
Yuting Li, Jingjing Guo, Shangde Sun
doaj   +1 more source

Enzymatic synthesis of acylglycerides from agroindustrial residues: process design and simplified techno‐economic assessment

Biofuels, Bioproducts and Biorefining, EarlyView.
Abstract This study developed an enzymatic process to add value to palm oil fatty acid distillate (PFAD) and glycerol, resulting in the production of monoacylglycerides (MAG) and diacylglycerides (DAG). The biocatalyst loading (Novozym 435) and molar ratio of reagents were evaluated to obtain a suitable reaction condition in terms of space–time yield ...
Ronaldo Rodrigues de Sousa, Isabelle de Souza Barbosa, Ana Cristina de Araújo Collaço, Denise Maria Guimarães Freire, Viridiana Santana Ferreira‐Leitão   +4 more
wiley   +1 more source

Esterification and Transesterification Optimization Processes of Nonedible (Castor and Neem) Oils for the Production of Biodiesel

Fuels
In current times, the diminishing reserves of petroleum, increased energy consumption across various sectors, and their consequential environmental impact have become apparent.
Hamid Ayyub, Muhammad Arslan, Muhammad Jamshaid, Akbar Ali Qureshi, Arslan Ahmed, Haji Hassan Masjuki, Md. Abul Kalam, Farah Binti Ahmad, Hafiz Liaqat Ali, Muhammad Umair Ahsan Khan, Muhammad Umer Khallidoon   +10 more
doaj   +1 more source

Electron transport through rectifying self-assembled monolayer diodes on silicon: Fermi level pinning at the molecule-metal interface

, 2006
We report the synthesis and characterization of molecular rectifying diodes on silicon using sequential grafting of self-assembled monolayers of alkyl chains bearing a pi group at their outer end (Si/sigma-pi/metal junctions).
Bouloussa, O., Bourgoin, J. P., Chevrot, C., Guerin, D., Lenfant, S., Palacin, S., Rondelez, F., Van, F. Tran, Vuillaume, D.   +8 more
core   +4 more sources

Life cycle assessment of biodiesel synthesis from waste cooking oil using bifunctional heterogeneous catalyst

Biofuels, Bioproducts and Biorefining, EarlyView.
Abstract The development of renewable energy sources is important in order to achieve the United Nations Sustainable Development Goals (SDGs). Waste cooking oil (WCO) is a promising feedstock for biodiesel production through transesterification. Heterogeneous bifunctional catalysts offer a sustainable alternative to conventional homogeneous bases such ...
Frederick Jit Fook Phang, Jocelyn Ling Hui Jong, Michael Toh Yang Wong, Jiuan Jing Chew, Lusi Ernawati, Diah Agustina Puspitasari, Fuping Li, Yen San Chan, Basil T. Wong, Jaka Sunarso   +9 more
wiley   +1 more source

Disubstituted Meldrum’s Acid: Another Scaffold with SuFEx-like Reactivity

Molecules
Sulfur Fluoride Exchange (SuFEx) chemistry represents an emerging class of click reactions that has found broad applications in drug discovery and materials science.
Baoqi Chen, Zhenguo Wang, Xiaole Peng, Jijun Xie, Zhixiu Sun, Le Li   +5 more
doaj   +1 more source