Results 31 to 40 of about 11,608,149 (298)

Green chemistry in perspective - models for GC activities and GC policy and knowledge areas

, 2006
This article presents two new models that give a perspective on green chemistry (GC). The first model is a classification model of different green chemistry activities, while the second model concerns green chemistry policy and knowledge areas (green ...
Jesper Sjöström, Sjöström, Jesper, Jesper Sjoestroem   +2 more
core   +1 more source

Evaluating a Professional Development Framework to Empower Chemistry Teachers to Design Context-Based Education [PDF]

, 2012
Even experienced chemistry teachers require professional development when they are encouraged to become actively engaged in the design of new context-based education.
Freudenthal Institute for Science and Mathematics Education, Sub Chemistry Education begr. 01-01-2013, Stolk, M.J., Pilot, A., Chemical education, Teacher learning and expertise throughout the professional career, Sub Chemistry Education, de Jong, O., Afd Educatie, Bulte, A.M.W.   +9 more
core   +1 more source

Lewis acid-catalyzed asymmetric reactions of β,γ-unsaturated 2-acyl imidazoles

Nature Communications, 2020
The investigation of reactivity of β,γ-unsaturated carbonyl compounds is of great synthetic value, especially in asymmetric transformations. Here, the authors report a catalytic asymmetric tandem isomerization/α-Michael addition of β,γ-unsaturated 2-acyl
Tengfei Kang, Liuzhen Hou, Sai Ruan, Weidi Cao, Xiaohua Liu, Xiaoming Feng   +5 more
doaj   +1 more source

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

FEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

A Comparative study of green chemistry education in the secondary school curriculum (Iran and four developed countries) [PDF]

فصلنامه نوآوری‌های آموزشی, 2017
It was a qualitative study that using a comparative study (Beredays method) studied the green chemistry education curricula in Iran and countries such as America, Australia, China and the United Kingdom.
Leilā Habibi Boodlāloo, Maryam Sabāghān, Seyed Mohammadrezā Emāmjom’e   +2 more
doaj  

Stereodivergent synthesis of vicinal quaternary-quaternary stereocenters and bioactive hyperolactones

Nature Communications, 2018
Stereodivergent construction of adjacent quaternary-quaternary stereocenters remains a formidable synthetic challenge. Here, the authors report a nickel-catalyzed enantioselective dearomatization Claisen rearrangement leading to vicinal all-carbon ...
Haifeng Zheng, Yan Wang, Chaoran Xu, Xi Xu, Lili Lin, Xiaohua Liu, Xiaoming Feng   +6 more
doaj   +1 more source

Valosin‐containing protein counteracts ATP‐driven dissolution of FUS condensates through its ATPase activity in vitro

FEBS Letters, EarlyView.
Biomolecular condensates formed by fused in sarcoma (FUS) are dissolved by high ATP concentrations yet persist in cells. Using a reconstituted system, we demonstrate that valosin‐containing protein (VCP), an AAA+ ATPase, counteracts ATP‐driven dissolution of FUS condensates through its D2 ATPase activity.
Hitomi Kimura, Shin‐ichi Tate, Kyota Yasuda   +2 more
wiley   +1 more source

Incorporating Sustainability in Higher Chemistry Education in Indonesia through Green Chemistry: Inspirations by Inquiring the Practice in a German University [PDF]

, 2019
Green chemistry is suggested as an important guide to allow the practice of chemistry to become more sustainable. In this study, a chemistry department at a German university is analyzed by an outside view to how it integrates the philosophy of green ...
Fajriati, Imelda, Hamidah, Nina, Eilks, Ingo, Prabawati, Susy Yunita   +3 more
core   +1 more source

Enantioselective organocatalytic synthesis of axially chiral aldehyde-containing styrenes via SNAr reaction-guided dynamic kinetic resolution

Nature Communications, 2023
The precise and efficient construction of axially chiral scaffolds, particularly toward the aryl-alkene atropoisomers with impeccably full enantiocontrol and highly structural diversity, remains greatly challenging. Herein, we disclose an organocatalytic
Fengyuan Guo, Siqiang Fang, Jiajia He, Zhishan Su, Tianli Wang   +4 more
doaj   +1 more source

Residual tail twisting in ascidian larvae is stabilized by asymmetric myofibrils that resist bilateral symmetry restoration

FEBS Letters, EarlyView.
Ascidian Ciona larvae initially show strong clockwise tail twisting, which is largely corrected during development. However, a small residual twist remains. This study shows that organized helical myofibrils in tail muscles mechanically stabilize this residual asymmetry, preventing complete restoration of bilateral symmetry and revealing how embryos ...
Yuki S. Kogure, Misaki K. Nishio, Satoru Okuda, Kohji Hotta   +3 more
wiley   +1 more source