scholarly journals The Use of CO2 in the Production of Bioplastics for an Even Greener Chemistry

2021 ◽  
Vol 13 (20) ◽  
pp. 11278
Author(s):  
Drault Fabien ◽  
Youssef Snoussi ◽  
Ivaldo Itabaiana ◽  
Robert Wojcieszak

The high life expectancy of the world population provokes increase in demand for food and energy. As a result, the intense industrialization and the application of fossil sources is responsible for high levels of CO2 emission and waste generation. To mitigate the CO2 emission a practical solution at the very short term is urgently needed. The capture of CO2 and its application in chemical processes for the valorization of residual biomass are of great importance nowadays. The application of CO2 in the selective carboxylation of furoic acid for the production of 2,5-furandicarboxylic acid (FDCA), a bio-based monomer, has been an important step towards obtaining biopolymers to replace petroleum-based plastics such as polyethylene terephthalate (PET). In this project report, we discuss on the current challenges for obtaining the 2,5-FDCA precursor from the furfural in two main routes involving oxidation and carboxylation via heterogeneous catalysis. We present the main objectives and discuss the importance of this research for the development of more sustainable processes.

Author(s):  
Emilie M. Hafner-Burton

In the last six decades, one of the most striking developments in international law is the emergence of a massive body of legal norms and procedures aimed at protecting human rights. In many countries, though, there is little relationship between international law and the actual protection of human rights on the ground. This book takes a fresh look at why it's been so hard for international law to have much impact in parts of the world where human rights are most at risk. The book argues that more progress is possible if human rights promoters work strategically with the group of states that have dedicated resources to human rights protection. These human rights “stewards” can focus their resources on places where the tangible benefits to human rights are greatest. Success will require setting priorities as well as engaging local stakeholders such as nongovernmental organizations and national human rights institutions. To date, promoters of international human rights law have relied too heavily on setting universal goals and procedures and not enough on assessing what actually works and setting priorities. This book illustrates how, with a different strategy, human rights stewards can make international law more effective and also safeguard human rights for more of the world population.


2014 ◽  
Vol 6 (01) ◽  
Author(s):  
JAVED ALAM SHEIKH

Almost 50 per cent of the world population is constituted by the women and they have been making substantial contribution to socio-economic development. But, unfortunately their tremendous contribution remains unrecognized and unnoticed in most of the developing and least developed countries causing the problem of poverty among them. Empowering women has become the key element in the development of an economy. With women moving forward, the family moves, the village moves and the nation moves. Hence, improving the status of women by way of their economic empowerment is highly called for. Entrepreneurship is a key tool for the economic empowerment of women around the world for alleviating poverty. Entrepreneurship is now widely recognized as a tool of economic development in India also. In this paper I have tried to discuss the reasons and role of Women Entrepreneurship with the help of Push and Pull factors. In the last I have also discussed the problems and the road map of Women Entrepreneurs development in India.


2020 ◽  
Author(s):  
Serena Stefani ◽  
Gabriele Prati

Research on the relationship between fertility and gender ideology revealed inconsistent results. In the present study, we argue that inconsistencies may be due to the fact that such relationship may be nonlinear. We hypothesize a U- shaped relationship between two dimensions of gender ideology (i.e. primacy of breadwinner role and acceptance of male privilege) and fertility rates. We conducted a cross-national analysis of 60 countries using data from the World Values Survey as well as the World Population Prospects 2019. Controlling for gross domestic product, we found support for a U-shaped relationship between gender ideology and fertility. Higher levels of fertility rates were found at lower and especially higher levels of traditional gender ideology, while a medium level of gender ideology was associated with the lowest fertility rate. This curvilinear relationship is in agreement with the phase of the gender revolution in which the country is located. Traditional beliefs are linked to a complementary division of private versus public sphere between sexes, while egalitarian attitudes are associated with a more equitable division. Both conditions strengthen fertility. Instead, as in the transition phase, intermediate levels of gender ideology’s support are associated with an overload and a difficult reconciliation of the roles that women have to embody (i.e. working and nurturing) so reducing fertility. The present study has contributed to the literature by addressing the inconsistencies of prior research by demonstrating that the relationship between gender ideology and fertility rates is curvilinear rather than linear.


2019 ◽  
Author(s):  
Lifang Chen ◽  
Yong Li ◽  
Yizhong Wang ◽  
Bohui Zhang
Keyword(s):  

2019 ◽  
Vol 24 (39) ◽  
pp. 4639-4645 ◽  
Author(s):  
Seyed Mostafa Parizadeh ◽  
Reza Jafarzadeh-Esfehani ◽  
Amir Avan ◽  
Maryam Ghandehari ◽  
Fatemeh Goldani ◽  
...  

Gastric cancer (GC) has a high mortality rate with a poor 5-year survival. Helicobacter pylori (H. pylori) is present as part of the normal flora of stomach. It is found in the gastric mucosa of more than half of the world population. This bacterium is involved in developing H. pylori-induced GC due to the regulation of different micro ribonucleic acid (miRNA or miR). miRNAs are small noncoding RNAs and are recognized as prognostic biomarkers for GC that may control gene expression. miRNAs may function as tumor suppressors, or oncogenes. In this review, we evaluated studies that investigated the ectopic expression of miRNAs in the prognosis of H. pylori positive and negative GC.


Author(s):  
Ali Forouzanfar ◽  
Hamideh Sadat Mohammadipour ◽  
Fatemeh Forouzanfar

: Periodontal diseases are highly prevalent and can affect high percentage of the world population. Oxidative stress and inflammation plays an important role in the pathogenesis of periodontal diseases. Nowadays, more attention has been focused on the herbal remedies in the field of drug discovery. Green tea is an important source of polyphenol antioxidants, it has long been used as a beverage worldwide. The most interesting polyphenol components of green tea leaves that are related with health benefits are the catechins. Taken together this review suggested that green tea with its wide spectrum of activities could be a healthy alternative for controlling the damaging reactions seen in periodontal diseases.


2019 ◽  
Vol 15 (2) ◽  
pp. 105-110 ◽  
Author(s):  
Eric Francelino Andrade ◽  
Víviam de Oliveira Silva ◽  
Débora Ribeiro Orlando ◽  
Luciano José Pereira

Introduction: Diabetes mellitus is a metabolic disease characterized by high glycemic levels for long periods. This disease has a high prevalence in the world population, being currently observed an increase in its incidence. This fact is mainly due to the sedentary lifestyle and hypercaloric diets. Non-pharmacological interventions for glycemic control include exercise, which promotes changes in skeletal muscle and adipocytes. Thus, increased glucose uptake by skeletal muscle and decreased insulin resistance through modulating adipocytes are the main factors that improve glycemic control against diabetes. Conclusion: It was sought to elucidate mechanisms involved in the improvement of glycemic control in diabetics in front of the exercise.


2020 ◽  
Vol 63 (6) ◽  
pp. 40-50
Author(s):  
Hugo Enrique Hernández-Martínez ◽  
Marta Georgina Ochoa-Madrigal

The diagnosis and treatment of bipolar disorders (BPD) in children is currently one of the biggest challenges and area of controversy in the field of child psychiatry. Bipolar disorders encompass several affective disorders that involve alterations in the degree of activity, content and form of thinking that are characterized by biphasic episodes of mood. This group of disorders affect approximately 1% of the world population and begin in youth (the average age of onset of ~20 years). However, in some studies a delay of 5 years has been observed since the presentation of symptoms at the beginning of the treatment. Currently, the diagnosis of TBP in children and adolescents should be based on the same set of symptoms applied to adults, as well as the general principles of the treatment. The research carried out around this disorder has resulted in changes in the conceptualization and approach of this pathology, now conceived as a group of disorders that share changes in mood and other cardinal symptoms, of a chronic and progressive nature that impacts in a negative way in those who suffer them. Key words: Bipolar disorder; childhood; mania; hypomania; depression.


The world faces significant and interrelated challenges in the twenty-first century which threaten human rights in a number of ways. This book examines the relationship between human rights and three of the largest challenges of the twenty-first century: conflict and security, environment, and poverty. Technological advances in fighting wars have led to the introduction of new weapons which threaten to transform the very nature of conflict. In addition, states confront threats to security which arise from a new set of international actors not clearly defined and which operate globally. Climate change, with its potentially catastrophic impacts, features a combination of characteristics which are novel for humanity. The problem is caused by the sum of innumerable individual actions across the globe and over time, and similarly involves risks that are geographically and temporally diffuse. In recent decades, the challenges involved in addressing global and national poverty have also changed. For example, the relative share of the poor in the world population has decreased significantly while the relative share of the poor who live in countries with significant domestic capacity has increased strongly. Overcoming these global and interlocking threats constitutes this century’s core political and moral task. This book examines how these challenges may be addressed using a human rights framework. It considers how these challenges threaten human rights and seeks to reassess our understanding of human rights in the light of these challenges. The analysis considers both foundational and applied questions. The approach is multidisciplinary and contributors include some of the most prominent lawyers, philosophers, and political theorists in the debate. The authors not only include leading academics but also those who have played important roles in shaping the policy debates on these questions. Each Part includes contributions by those who have served as Special Rapporteurs within the United Nations human rights system on the challenges under consideration.


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