14 research outputs found
Self-assembled Nano-BiFeO3 Chemi-resistive VOC Sensor: A Non-conventional MOS Sensor Highly Selective toward Acetone
No full textEffect of mechanical milling on the structural and dielectric properties of BaTiO3 powders
No full textBarium titanate (BaTiO3) is a well-known ferroelectric material and widely used in electronic industries for the multi-layer ceramic capacitor. In this reported work, commercially available tetragonal BaTiO3 (BT) powders were taken to study the size effect on the structural and dielectric properties of the BT ceramics during high-energy ball milling (0-110 h). The same perovskite when kept under a normal atmospheric condition after milling shows gradual increase of additional crystalline phase that occurred because of the absorption of atmospheric CO2 gas, which is characterised as orthorhombic BaCO3. The milled BT samples were characterised by X-ray diffraction and small-angle X-ray scattering and a dielectric analyser. The purpose of this work was to study how the dielectric property of nanoBT ceramics varies with reduction of particle size, structural changes and the absorption of carbon by these nanopowders. It was observed that the dielectric constant of the BT powders increases with particle size reduction during milling. The dielectric behaviour of the BT ceramics significantly changes with polymorphic phase transformation in nanocrystalline BT at different stages of milling. The capacitance of nanoBT powders is significantly changed with the absorption of carbon by the nanoBT powders in a humid atmosphere
Material dependent and temperature driven adsorption switching (p- to n- type) using CNT/ZnO composite-based chemiresistive methanol gas sensor
No full textThe present study correlates two simultaneous as well as significant observations coming out from a single sensing prototype concerning the detection of volatile organic compounds (VOCs) by a carbonaceous material based sensor. We have developed a composite based chemiresistive sensor utilizing two different components (carbon nanotube (CNT) and zinc oxide (ZnO)). This is reflected in a unique adsorption switching phenomena followed by a ‘p- to n-’ type transition characteristics above a certain operating temperature (150 °C) in the VOC detection process. Noticeably, by the virtue of adsorption switching, the CNT/ZnO composite is able to operate as a dual mode sensor, in which CNT dominates in low temperature region (≤ 150 °C) and ZnO at high temperature region (>150 °C) with a realistic detection ability. The highly reproducible sensors (29 prototypes) are selective towards methanol (Response, R ∼ 73 ± 3 %) and shows 8-fold enhancement in response value compared to neighbouring VOC i.e., ethanol at an operating temperature of 150 °C with a very low bias voltage of 10 mV. Finally, the adsorption switching phenomena (physisorption to chemisorption) has been explained by Fourier Transform Infrared Spectroscopy (FTIR) study and activation energy values along with ‘p- to n-’ type transition is compared qualitatively with a typical full wave rectification process
Evaluation of Surfactant Synthesized from Waste Vegetable Oil to Enhance Oil Recovery from Petroleum Reservoirs
No full textAbstractMinimizing the loss of chemicals due to adsorption unto the rock materials during injection into petroleum reservoirs is critical to improve the economics and environmental footprint of the process and ensure its wider application. In this study, adsorption of a surfactant formulated from waste vegetable oil (SEMES) and two commercial surfactants, cetyltrimethyl ammonium bromide (CTAB) and sodium dodecyl sulfate (SDS) onto common reservoir materials, at various concentrations, salinity and pH is compared. Indirect method of residual equilibrium concentration measurement was employed to obtain the adsorption isotherm of the surfactants on kaolin, silica, alumina and ilmenite. They were found to adsorb strongly onto the materials while stabilization in the region above the CMC was observed. At constant salinity, cationic surfactant adsorbed more strongly on the materials than the anionic surfactant. With increasing pH, the adsorption of SDS and SEMES decreased while the opposite was the case with the cationic surfactant, CTAB
Room temperature multiferroicity in orthorhombic LuFeO3
No full textFrom the measurement of dielectric, ferroelectric, and magnetic properties, we observe simultaneous ferroelectric and magnetic transitions around similar to 600K in orthorhombic LuFeO3. We also observe suppression of the remanent polarization by similar to 95% under a magnetic field of similar to 15 kOe at room temperature. The extent of suppression of the polarization under magnetic field increases monotonically with the field. These results show that even the orthorhombic LuFeO3 is a room temperature multiferroic of type-II variety exhibiting quite a strong coupling between magnetization and polarization. (C) 2014 AIP Publishing LLC
The Relationship between Clinical Governance and Organizational Culture at Kafr El Dawar Central Hospital
No full text<p><strong>Abstract:</strong> The concept and use of the term ‘clinical governance’ emerged in the late-1990s in the United Kingdom and has since become central to health policy in a range of countries. The implementation of Clinical Governance (CG) requires the establishment of a culture which encourages health professionals to improve their performance and such a culture promotes continuous learning and recognizes it as the key of success for quality improvement. Aim: Determine the relationship between clinical governance and organizational culture at Kafr El Dawar Central Hospital. Methods: A descriptive, correlational research design was utilized to conduct this study. Setting: In all inpatient units at Kafr El Dawar Central Hospital which is affiliated to the Ministry of Health, for all nurses in the hospital who are responsible for providing direct patient care (N=126). Tools: two tools were used: Tool1: Clinical Governance Climate Questionnaire (CGCQ) in addition to demographic characteristics data sheet ; Tool II: The Denison Organizational Culture Survey (DOCS). Results: Studied nurses perceived moderate mean percent score for both total clinical governance and total organizational culture (OC). Also, there was a statistical significant moderate correlation was noticed between clinical governance and organizational culture. Conclusion: there was a statistical significant moderate correlation was noticed between clinical governance and organizational culture at Kafr El-Dawar Central hospital. Recommendations: Establishment of a planned and integrated program for quality improvements, improving senior management supports as agents to make relevant changes, providing opportunities for staff to participate in all stages of quality improvement programs and creating a blame-free atmosphere for making a “learning from mistakes” culture.</p>
<p><strong>Keywords:</strong> Clinical governance, Organizational culture.</p>
<p><strong>Title:</strong> The Relationship between Clinical Governance and Organizational Culture at Kafr El Dawar Central Hospital</p>
<p><strong>Author:</strong> Samya Mohamed Ibrahem Ahmed, Nadia Hassan Ali Awad, Neamat Mohamed Ef Sayed</p>
<p><strong>International Journal of Novel Research in Healthcare and Nursing</strong></p>
<p><strong>ISSN 2394-7330</strong></p>
<p><strong>Vol. 10, Issue 3, September 2023 - December 2023</strong></p>
<p><strong>Page No: 73-83</strong></p>
<p><strong>Novelty Journals</strong></p>
<p><strong>Website: www.noveltyjournals.com</strong></p>
<p><strong>Published Date: 02-October-2023</strong></p>
<p><strong>DOI: <a href="https://doi.org/10.5281/zenodo.8398569">https://doi.org/10.5281/zenodo.8398569</a></strong></p>
<p><strong>Paper Download Link (Source)</strong></p>
<p><strong><a href="https://www.noveltyjournals.com/upload/paper/The%20Relationship%20between%20Clinical%20Governance-02102023-2.pdf">https://www.noveltyjournals.com/upload/paper/The%20Relationship%20between%20Clinical%20Governance-02102023-2.pdf</a></strong></p>International Journal of Novel Research in Healthcare and Nursing, ISSN 2394-7330, Novelty Journals, Website: www.noveltyjournals.co
Ultrafast, Highly Sensitive, and Selective Detection of p-Xylene at Room Temperature by Peptide-Hydrogel-Based Composite Material
No full textA peptide/carbon dot (CD) composite xerogel is used as a selective p-xylene VOC (volatile organic compound) sensor. The fiber formation by the peptide allows us to attain a semiconducting property, whereas the presence of the CD amplifies the sensitivity. The selective detection of p-xylene is achieved at a very low concentration (response ≈ 96% for 50 ppm) with an ultrafast response (630 ms) and recovery (540 ms). The sensor is also able to detect p-xylene within crude oil, proving its industrial application. In comparison with the available VOC sensors, this work stands out as a low-cost, sensitive, and selective room-temperature p-xylene sensor with ultrafast sensing ability
Ultrafast, Highly Sensitive, and Selective Detection of <i>p</i>‑Xylene at Room Temperature by Peptide-Hydrogel-Based Composite Material
No full textA peptide/carbon
dot (CD) composite xerogel is used as a selective p-xylene VOC (volatile organic compound) sensor. The fiber
formation by the peptide allows us to attain a semiconducting property,
whereas the presence of the CD amplifies the sensitivity. The selective
detection of p-xylene is achieved at a very low concentration
(response ≈ 96% for 50 ppm) with an ultrafast response (630
ms) and recovery (540 ms). The sensor is also able to detect p-xylene within crude oil, proving its industrial application.
In comparison with the available VOC sensors, this work stands out
as a low-cost, sensitive, and selective room-temperature p-xylene sensor with ultrafast sensing ability
A força normativa da constituição segundo Ferdinand Lassalle e Konrad Hesse
No full textWhat constitutes the pillar of the entire legal system of a nation, therefore, its application and effectiveness that constitute a determining factor in the order and full functioning of a State, is its constitution. The objective of this research was to analyze the similarities and differences in approaches to the essence of the constitution according to the thoughts of Lassalle and Hesse. The question arises: does one author’s thoughts cancel out another’s? Do they have an antagonistic perspective of conceptualizing the Constitution? The method used was inductive, which allows us to analyze the particular ideas of each author and only then arrive at an overview of their works. The methodology used was bibliographical research, which consists of reviewing the literature related to the topic addressed. To this end, books, periodicals, articles, Internet sites and other sources were used. At the end of the research it was inferred that the thoughts of these two great jurists are not antagonistic but rather have different views that in turn complement each other. While Lassalle states that a written Constitution is good and lasting when it corresponds to the Real Constitution and has its roots in factors of power that govern the country, otherwise it would just be a piece of paper. Konrad Hesse aims to demonstrate that political and social factors should not be ignored as they have strength and relevance, but that even in the face of this the Constitution has its own strength, not being at the mercy of political and social events.Quem constitui o pilar de todo o ordenamento jurídico de uma nação, sendo assim, sua aplicação e eficácia que constituem em fator determinante na ordem e pleno funcionamento de um Estado, é a sua constituição. O objetivo desta pesquisa foi o de analisar as semelhanças e diferenças nas abordagens sobre a essência da constituição segundo o pensamento de Lassalle e Hesse. Questiona-se: os pensamentos de um autor anulam o de outro? Possuem um prisma antagônico de interpretar a Constituição? O método utilizado foi o indutivo que nos permite analisar as ideias particulares de cada autor para só então chegarmos a uma visão geral de suas obras A metodologia empregada foi a pesquisa bibliográfica, que consiste na revisão da literatura relacionada à temática abordada. Para tanto, foram utilizados livros, periódicos, artigos, sites da Internet entre outras fontes. Ao final da pesquisa inferiu-se que os pensamentos destes dois grandes juristas não são antagônicas e sim possuem diferentes visões que por sua vez se complementam .Enquanto Lassalle afirma que uma Constituição escrita é boa e duradoura quando corresponde à Constituição Real e tem suas raízes nos fatores do poder que regem o país, pois caso contrário,seria apenas uma folha de papel. Konrad Hesse visa demonstrar que, os fatores políticos e sociais não devem ser ignorados pois possuem força e relvãncia, mas que mesmo diante disso a Constituição possui sua própria força, não ficando à mercê dos acontecimentos políticos e sociais
A scoping review of clinical pharmacist and pharmacy technician contributions to cystic fibrosis care
No full textThe purpose of this scoping literature review was to assess available published literature/abstracts, and to examine described contributions by pharmacists and/or pharmacy technicians as part of the care of people with cystic fibrosis (pwCF). This scoping review followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses Extension for Scoping Reviews (PRISMA-ScR). Published abstracts and articles from inception through December 2022 were included if they described care of pwCF (all ages), with at least one group of participants receiving care/services from pharmacy staff, and were available in English. Data extractions were outcomes, study, and participant characteristics. From 756 abstracts and papers, 91 were included. The majority were published abstracts (n = 67), from the United States (n = 64), retrospective cohort study design (n = 47), involved pharmacist intervention (n = 75), with no comparison group (n = 48), and in an outpatient/ambulatory setting (n = 59). Most often, literature were descriptions of specific pharmacist services, evaluations of adding a pharmacist, or descriptions of overall pharmacist practice/role. Specific pharmacist services were defined as patient or caregiver education, adherence support, medication reconciliation, management of pulmonary exacerbations, and medication management (including monitoring, and telehealth). Pharmacists and pharmacy technicians have contributed to the care of pwCF in various ways; however, much of the available data are currently disseminated in the form of conference abstracts. Efforts to support author publication of data as full peer-reviewed publications should be prioritized as this data can help support others’ efforts to develop or support similar clinical pharmacy services.Open access articleThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at [email protected]
