Thermodynamic Relations in n-Variable Systems in Jacobian Form: Part II, Polyphase Polycomponent Chemical Systems

1955 ◽  
Vol 83 (6) ◽  
pp. 193 ◽  
Author(s):  
F. H. Crawford
Keyword(s):  
Chemical Systems ◽  
Form Part

Thermodynamics of Chemical Systems

1990 ◽  
Author(s):  
Scott Emerson Wood ◽  
Rubin Battino
Keyword(s):  
Chemical Systems

Using a Multisectoral Approach in Tackling Child Sexual Abuse: Lessons from a Zimbabwean Case Study

2020 ◽  
Vol 32 (1) ◽  
Author(s):  
Noel Muridzo ◽  
Victor Chikadzi
Keyword(s):  
Sexual Abuse ◽  
Child Sexual Abuse ◽  
Justice System ◽  
Child Survivors ◽  
Integrated Service Delivery ◽  
Improved Outcomes ◽  
Form Part ◽  
Role Players ◽  
Areas Of Concern

Child sexual abuse is one of the prevalent social ills that affect children in Zimbabwe. In response to the problem of child sexual abuse and the need to mitigate its adverse effects, Zimbabwe established the Victim Friendly System. The Victim Friendly System is a multisectoral forum made up of social workers, medical doctors, nurses, the police force and role players within the justice system such as magistrates, prosecutors, counsellors, educationists and psychologists. These professionals offer distinctive but complementary interventions to child survivors of child sexual abuse. This paper discusses the merits and lessons gleaned from using the Victim Friendly System as a multisectoral forum to tackle child sexual abuse. In researching this phenomenon, the study adopted a qualitative approach and data were collected from 38 participants and 4 key informants selected using theoretical and purposive sampling respectively. A total of 300 court files of child sexual abuse cases were also reviewed. The findings that emerged from the study show that a multisectoral approach to dealing with child sexual abuse provides the benefit of integrated service delivery. Improved outcomes for victims of sexual abuse as well as streamlined, effective and efficient operations for organisations that form part of the Victim Friendly System were also evident. This notwithstanding, the paper also discusses some areas of concern that could potentially affect how the Victim Friendly System multisectoral arrangement works. The lessons that emerged from the study provide some insights that are useful in informing guidelines for multisectoral arrangements.

Tshivenda Female Attire: A Socio-cultural Significance

2018 ◽  
Vol 28 (2) ◽  
Author(s):  
Matodzi Rebecca Raphalalani ◽  
Mashudu Churchill Mashige
Keyword(s):  
Higher Education ◽  
Literature Review ◽  
Indigenous Knowledge ◽  
Document Analysis ◽  
Age Group ◽  
Cultural Significance ◽  
Cultural Meanings ◽  
Form Part ◽  
Dress Codes ◽  
Verbal Meaning

This study investigated, through observation of the Tshivenḓa female dress codes, the socio-cultural significance of such dress codes as a means of non-verbal communication. The non-verbal meaning embedded in different items of dresses conveys messages from the wearers to observers. The study adopted  a qualitative  design, since it used  document analysis and literature review as a means to adduce evidence that Tshivenḓa dress codes not only communicate socio-cultural meanings to the observer, but also signify gender, age group, rank, authority, status, and identity, as well as power relations—including the supernatural and the sacred. The study also revealed that there are dress codes that are specifically worn during initiation ceremonies among the Vhavenḓa people. In conclusion, we recommend that knowledge of Tshivenḓa dress codes should form part of the overall indigenous knowledge that needs to be studied in institutions of basic and higher education, and that for the sake of preserving this valuable information, communities need to be proactive in disseminating it to the younger generation.

Chemically Fueled Assembly of Macrocycles Comprising Multiple Transient Bonds

2019 ◽  
Author(s):  
Mohammad Mosharraf Hossain ◽  
Joshua Atkinson ◽  
Scott Hartley
Keyword(s):  
Covalent Bond ◽  
Dicarboxylic Acids ◽  
Molecular Assembly ◽  
Chemical Systems ◽  
Complex Architectures ◽  
The Creation ◽  
Dynamic Exchange

Dissipative (nonequilibrium) assembly powered by chemical fuels has great potential for the creation of new adaptive chemical systems. However, while molecular assembly at equilibrium is routinely used to prepare complex architectures from polyfunctional monomers, species formed out of equilibrium have, to this point, been structurally very simple. In most examples the fuel simply effects the formation of a single transient covalent bond. Here, we show that chemical fuels can assemble bifunctional components into macrocycles containing multiple transient bonds. Specifically, dicarboxylic acids give aqueous dianhydride macrocycles on treatment with a carbodiimide. The macrocycle is assembled efficiently as a consequence of both fuel-dependent and -independent mechanisms: it undergoes slower decomposition, building up as the fuel recycles the components, and is a favored product of the dynamic exchange of the anhydride bonds. These results create new possibilities for generating structurally sophisticated out-of-equilibrium species.

Chemically Fueled Assembly of Macrocycles Comprising Multiple Transient Bonds

2019 ◽  
Author(s):  
Mohammad Mosharraf Hossain ◽  
Joshua Atkinson ◽  
Scott Hartley
Keyword(s):  
Covalent Bond ◽  
Dicarboxylic Acids ◽  
Molecular Assembly ◽  
Chemical Systems ◽  
Complex Architectures ◽  
The Creation ◽  
Dynamic Exchange

Dissipative (nonequilibrium) assembly powered by chemical fuels has great potential for the creation of new adaptive chemical systems. However, while molecular assembly at equilibrium is routinely used to prepare complex architectures from polyfunctional monomers, species formed out of equilibrium have, to this point, been structurally very simple. In most examples the fuel simply effects the formation of a single transient covalent bond. Here, we show that chemical fuels can assemble bifunctional components into macrocycles containing multiple transient bonds. Specifically, dicarboxylic acids give aqueous dianhydride macrocycles on treatment with a carbodiimide. The macrocycle is assembled efficiently as a consequence of both fuel-dependent and -independent mechanisms: it undergoes slower decomposition, building up as the fuel recycles the components, and is a favored product of the dynamic exchange of the anhydride bonds. These results create new possibilities for generating structurally sophisticated out-of-equilibrium species.

Graubündens Wald im Fokus | Focus on the Grisons forest

2009 ◽  
Vol 160 (7) ◽  
pp. 195-200
Author(s):  
Reto Hefti
Keyword(s):  
Climate Change ◽  
Global Warming ◽  
Natural Hazards ◽  
Positive Attitude ◽  
Production Costs ◽  
Raw Material ◽  
Intensive Use ◽  
Form Part ◽  
New Challenges ◽  
The Government

In the mountainous canton Grisons, much visited by tourists, the forest has always had an important role to play. New challenges are now presenting themselves. The article goes more closely into two themes on the Grisons forestry agenda dominating in the next few years: the increased use of timber and climate change. With the increased demand for logs and the new sawmill in Domat/Ems new opportunities are offered to the canton for more intensive use of the raw material, wood. This depends on a reduction in production costs and a positive attitude of the population towards the greater use of wood. A series of measures from the Grisons Forestry Department should be of help here. The risk of damage to infrastructure is particularly high in a mountainous canton. The cantonal government of the Grisons has commissioned the Forestry Department to define the situation concerning the possible consequences of global warming on natural hazards and to propose measures which may be taken. The setting up of extensive measurement and information systems, the elaboration of intervention maps, the estimation of the danger potential in exposed areas outside the building zone and the maintenance of existing protective constructions through the creation of a protective constructions register, all form part of the government programme for 2009 to 2012. In the Grisons, forest owners and visitors will have to become accustomed to the fact that their forests must again produce more wood and that, on account of global warming, protective forests will become even more important than they already are today.

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