Encapsulation of Crabtree's catalyst in sulfonated MIL-101(Cr): enhancement of stability and selectivity between competing reaction pathways by the MOF chemical microenvironment

Crabtree's catalyst was encapsulated inside the pores of the sulfonated MIL‐101(Cr) metal–organic framework (MOF) by cation exchange. This hybrid catalyst is active for the heterogeneous hydrogenation of non‐functionalized alkenes either in solution or in the gas phase. Moreover, encapsulation inside a well‐defined hydrophilic microenvironment enhances catalyst stability and selectivity to hydrogenation over isomerization for substrates bearing ligating functionalities. Accordingly, the encapsulated catalyst significantly outperforms its homogeneous counterpart in the hydrogenation of olefinic alcohols in terms of overall conversion and selectivity, with the chemical microenvironment of the MOF host favouring one out of two competing reaction pathways

Synthesis of alkanethiolate-capped palladium nanoparticles generated from sodium S-dodecyl thiosulfate for isomerization of allyl alcohols

This thesis presents a synthetic method for alkanethiolate-functionalized Pd nanoparticles that are efficient catalysts for the isomerization of various allyl alcohols to their corresponding carbonyl compounds. Pd nanoparticles are produced by the borohydride reduction of K2PdCl4 in toluene/H2O using sodium S-dodecylthiosulfate as a source for the stabilizing ligands. The monolayer-capped Pd nanoparticles from sodium S-dodecylthiosulfate are quite comparable in composition (dodecylthiolate) and core size with those previously prepared from dodecanethiol. However, the catalytic activity of Pd nanoparticles generated from S-dodecylthiosulfate is found to be significantly greater than that of Pd nanoparticles prepared from dodecanethiol. Furthermore, the mechanism of the catalytic reactions and the regioselectivity of Pd nanoparticles in different environments are studied by changing the amount of H2 gas, the type of solvent used for the catalytic reactions and the use of ligands with different chain length. Lastly, the high stability of homogeneous nanocatalysts is demonstrated by recycling dodecanethiolate-capped Pd nanoparticles over ten times for the isomerization reaction of allyl alcohol

Criteria For Determining the Ambiguous Testamentary Property in Iran Law with Emphasis on Shi'ite Jurisprudence Sources

This article examines the ambiguous testament in Shi'ite jurisprudence and Iran law. The purpose of this article is to present a criterion for determining the ambiguous testamentary property and heirs’ authority range in determining its amount. The questions dealt with are whether the remarked narratives (Revayat) on determining the amount of the testamentary property are applicable in Iran law or not, and whether accepting another rule in Iran law is against the jurisprudence. Moreover, the question is: Is the determination of the testamentary property a condition for the validity of that? The conclusion is that the narratives on determining the ambiguous testament are exclusive of Arab societies and languages. Hence, it is not possible to treat it as a criterion in Iran law. It is rather necessary to consider all of them under a unitary rule and entitles the heirs to determine it based on a general rule. Having said that, the heirs are not completely free in this respect, that is to say, they should determine it in accordance with the ‘will’ and volition of testator as well as with the standard of reasonableness. Therefore, in the possessive testament, the determination of the testamentary property is also a condition which is met by entitling the heirs to specify it. In addition, if heirs do not determine the testamentary or if it is not feasible to refer to them, judge will determine the amount of testamentary

Iron deficiency anemia in older females: A comparison between community-dwelling individuals and nursing home residents in the Southwest of Iran

Background: Iron deficiency anemia (IDA), as one of the most common problems of the elderly, is preventable and treatable. Objectives: The current study aimed at determining the prevalence of IDA and its related factors in older females and comparing it between community-dwelling individuals and nursing home residents in the Southwest of Iran. Methods: The current cross sectional study was conducted on 365 community-dwelling and nursing home residents in Bushehr Province, Iran. Data were collected in 2017. Blood samples were taken from all participants to measure hemoglobin and ferritin levels. Hemoglobin values less than 12 g/dL were considered as diagnostic criteria for anemia. Simple logistic regression was used to compare normal subjects with the ones with anemia, and after adjusting the marital status and age, the odds ratio (OR) was obtained. Furthermore, independent variables affecting them and ORs and their associated confidence intervals (CIs) were obtained, which were significant. Data were analyzed using SPSS software and the significant level was less than 0.05. Results: The mean ± SD age of participants was 82.00 ± 5.79 years, and the means of hemoglobin and ferritin levels were 12.6 ± 1.04 g/dL and 15.00 ± 5.11 µg/dL, respectively. Based on the hemoglobin rate, 30% of the elderly females had anemia, and the prevalence of IDA in the elderly living in the community and nursing homes was 27% and 39%, respectively. Conclusions: The prevalence of IDA in elderly females was high in Southwest of Bushehr. The crude and adapted ORs indicated that living in the nursing home was a risk factor for anemia. Therefore, this ailment requires a national screening, diagnosis, and early intervention

Global Medicinal Use of Bats: A Systematic Literature and Social Media Review

The hunting of bats for food and medicine is one of the greatest threats to bat conservation. While hunting for consumption is the focus of increased attention, the specific medicinal uses of bats are poorly documented, limiting mitigation efforts. Here, we determine the distribution of bat hunting for food and medicinal use and characterize medicinal use practices. We systematically surveyed English-language scientific literature and social media platforms utilizing keywords and hashtags in 27 languages. We found 198 papers and 1063 social media posts from 83 countries and territories. Although use for food was more common, with 1284 unique reports from 71 countries, bats were used to treat 42 ailments of 11 human body systems across 37 countries (453 reports). Asthma was the most common ailment, distantly followed by kidney conditions. Ten organs or body parts of bats were used medicinally, with bat meat (flesh) and fluids (blood, bile, and oil) the most common. Understanding the effects and drivers of specific bat hunting practices will help guide conservation and public health efforts in the communities where bats are hunted. By pinpointing the ailments bats are being used for, outreach and alternative treatments can be introduced to replace the use of bats

Global Medicinal Use of Bats: A Systematic Literature and Social Media Review

The hunting of bats for food and medicine is one of the greatest threats to bat conservation. While hunting for consumption is the focus of increased attention, the specific medicinal uses of bats are poorly documented, limiting mitigation efforts. Here, we determine the distribution of bat hunting for food and medicinal use and characterize medicinal use practices. We systematically surveyed English-language scientific literature and social media platforms utilizing keywords and hashtags in 27 languages. We found 198 papers and 1063 social media posts from 83 countries and territories. Although use for food was more common, with 1284 unique reports from 71 countries, bats were used to treat 42 ailments of 11 human body systems across 37 countries (453 reports). Asthma was the most common ailment, distantly followed by kidney conditions. Ten organs or body parts of bats were used medicinally, with bat meat (flesh) and fluids (blood, bile, and oil) the most common. Understanding the effects and drivers of specific bat hunting practices will help guide conservation and public health efforts in the communities where bats are hunted. By pinpointing the ailments bats are being used for, outreach and alternative treatments can be introduced to replace the use of bats

The Concept of Hospitalization of Children from the View Point of Parents and Children

Objective: Disease and hospitalization can be the first crisis that a child encounters. The aim of this study is to reveal a clear picture of the meaning of hospitalization in children, to show the experience and behavior of hospitalized children and to discover the meaning and understanding of hospitalization in them. Methods: This study is a phenomenology study of qualitative research within the framework of Husserl Eidetic phenomenology through comprehensive interviewing. The objective group consisted of children 7-11 years old and their parents hospitalized in the children's ward of 22 Bahman Hospital and the surgery ward of 15 Khordad Hospital during the study (2008). Method of selection of participants was as follows: having experience of hospitalization, having ability to answer the questions, and being volunteered. Sample size was detected by data saturation. In the method of sampling, an object group of 20 (12 children and 8 parents) were chosen and interviewed. The Seven Colaizzi Stages were used for analysis of data. Findings: The analysis of the interviews and the written narrations of the participants led to the extraction of 6 inner themes consisting of sickness, environment, reciprocal relationship, parents'personal problems, mental and emotional matters and a spiritual dimension; all of which define a specific aspect of the experience of hospital in children and parents. Conclusion: The experience of hospitalization in children can be considered as a process of effort for returning to health and, on the whole, the regaining of the individual's status in the world. Nurses can ease this process by showing the importance of experience and feelings of individuals at the time of hospitalization and help people to adapt themselves to their new surroundings. This matter can enable the nurses to utilize methods of helping in the adaptation of individuals and thus guide the unique powers present in every individual to ease and quicken recovery