scholarly journals Remarkable Change of Stereochemistry near the Terminating Chain-End of Heterotactic Poly(ethyl methacrylate) with Conversion. Importance in Mechanistic Study of Stereospecific Polymerization with the Aid of Chain-End Analysis

1996 ◽  
Vol 28 (12) ◽  
pp. 1110-1111 ◽  
Author(s):  
Tatsuki Kitayama ◽  
Tomohiro Hirano ◽  
Koichi Hatada
1998 ◽  
Vol 31 (23) ◽  
pp. 8063-8068 ◽  
Author(s):  
P. van de Wetering ◽  
N. J. Zuidam ◽  
M. J. van Steenbergen ◽  
O. A. G. J. van der Houwen ◽  
W. J. M. Underberg ◽  
...  

2010 ◽  
Vol 00 (10) ◽  
pp. 1218-1224
Author(s):  
Yan SUN ◽  
Yan ZHAN ◽  
Qiong JIANG ◽  
Yuanyuan SHI ◽  
Qiang WANG ◽  
...  

2001 ◽  
Vol 120 (5) ◽  
pp. A145-A145
Author(s):  
C CHO ◽  
Y YE ◽  
E LIU ◽  
V SHIN ◽  
N SHAM

Planta Medica ◽  
2014 ◽  
Vol 80 (16) ◽  
Author(s):  
L Wang ◽  
L Shan ◽  
G Cui ◽  
Y Chen ◽  
J li ◽  
...  
Keyword(s):  

2018 ◽  
Vol 4 (1) ◽  
pp. 117
Author(s):  
Main Ud-din

This paper is about the transformation in the patriarchal structure of Rashidpur village in Munshiganj district, Bangladesh following overseas migration of men leaving their women in the village. In doing so, the study explores the continuity and changes in the discourse and practices of traditional gender roles in a patriarchal Muslim society considering the perspective of both men and women. The study pays especial attention to transnational communication of the villagers, the changes in their gender based mobility and its contribution to the changes in patriarchal ideology. The study is based on ethnographic fieldwork, which examines whether the changes are sustainable or temporal for a period when the husbands are abroad and what happens to the practices when the husbands permanently return. Though the findings of the study indicate the diversity and complexity of practices, migration of men increases the mobility of the left behind women. Again, the entrance of cell phone, TV and satellite channels and transnational communication of women have significantly changed their agency as individuals. Consequently, many young wives like to come out of the domination of their in-laws and live in separate households instead of previous joint arrangement. The overall findings of the study show a remarkable change in the traditional pattern of village life. The study contextualizes structure and agency to understand how patriarchal structure influences individuals and how individuals play a role to transform the structure in exchange through their mobility, activities and resistance when the migrants are abroad.


2018 ◽  
Author(s):  
Sandepan Maity ◽  
Robert Flowers

Despite the broad utility and application of SmI<sub>2</sub>in synthesis, the reagent is used in stoichiometric amounts and has a high molecular weight, resulting in a large amount of material being used for reactions requiring one or more equivalents of electrons. We report mechanistic studies on catalytic reactions of Sm(II) employing a terminal magnesium reductant and trimethyl silyl chloride in concert with a non-coordinating proton donor source. Reactions using this approach permitted reductions with as little as 1 mol% Sm. The mechanistic approach enabled catalysis employing HMPA as a ligand, facilitating the development of catalytic Sm(II) 5-<i>exo</i>-<i>trig </i>ketyl olefin cyclization reactions.


2019 ◽  
Author(s):  
Chem Int

Activated carbon was prepared from molasses, which are natural precursors of vegetable origin resulting from the sugar industry. A simple elaboration process, based on chemical activation with phosphoric acid, was proposed. The final product, prepared by activation of molasses/phosphoric acid mixture in air at 500°C, presented high surface area (more than 1400 m2/g) and important maximum adsorption capacity for methylene blue (625 mg/g) and iodine (1660 mg/g). The activated carbon (MP2(500)) showed a good potential for the adsorption of Cr(VI), Cu(II) and Pb(II) from aqueous solutions. The affinity for the three ions was observed in the following order Cu2+ Cr6+ Pb2+. The process is governed by monolayer adsorption following the Langmuir model, with a correlation coefficient close to unity.


Sign in / Sign up

Export Citation Format

Share Document