Widening Blockchain Technology toward Access Control for Service Provisioning in Cellular Networks.

The attention on blockchain technology (BCT) to create new forms of relational reliance has seen an explosion of new applications and initiatives, to assure decentralized security and trust. Its potential as a game-changing technology relates to how data gets distributed and replicated over several organizations and countries. This paper provides an introduction to BCT, as well as a review of its technological aspects. A concrete application of outsource access control and pricing procedures in cellular networks, based on a decentralized access control-as-a-service solution for private cellular networks, is also presented. The application can be used by service and content providers, to provide new business models. The proposed method removes the single point of failure from conventional centralized access control systems, increasing scalability while decreasing operational complexity, regarding access control and pricing procedures. Design and implementation details of the new method in a real-world scenario using a private cellular network and a BCT system that enables smart contracts are also provided.

Patient-centred communication for women with breast cancer: Relation to body image perception.

AIMS AND OBJECTIVES: This study aimed to determine the predictive values of patient-centred communication (PCC) and patient's characteristics on the body image (BI) perception in postmastectomy patients. BACKGROUND: Patient-centred communication has been touted as a means of addressing BI issues, especially for postmastectomy patients. DESIGN AND METHODS: This predictive correlational study was conducted on 275 surgically treated breast cancer patients admitted to the Oncology Departments of two hospitals in Tabriz, Iran. These patients were selected using a convenience sampling method. The Body Image after Breast Cancer Questionnaire (BIBCQ) and patient-centred communication questionnaire (PCCQ) were used for collecting the data. Descriptive and inferential statistics were applied to the data. Reporting was in accordance with the STROBE guideline. RESULTS: A multivariable model significantly predicted BI perception in participants using surgery type and time elapsed following surgery. Participants' limitations were significantly affected by surgery type and participants' perception of the nurses' PCC skills. Arm concern was significantly affected by surgery type and nurses' PCC skills. CONCLUSION: Patient-centred skills in nurse-patient communication are critical for resolving BI difficulties such as arm concerns and limitations regarding the disease and its treatment. RELEVANCE TO CLINICAL PRACTICE: Patient-centred communication skills can be taught nurses in the clinical setting to help alleviate patients' BI problems.

Harnessing the power of natural deep eutectic solvents (choline chloride/sucrose) and polypropylene glycol in the formation of aqueous biphasic systems and the application of these systems in drug extraction.

In recent times, there has been considerable interest in utilizing aqueous biphasic systems (ABSs) containing natural deep eutectic solvents (NADESs) for the extraction of various substances. In this study, we focused on investigating the phase behavior of ABSs composed of poly(propylene) glycol 400 and NADESs (specifically, choline chloride/sucrose with molar ratios of 2 : 1 and 1 : 1). By analyzing the compositions of tie-lines, it was observed that these ABSs, which consist of four components, exhibit characteristics similar to ternary systems. To examine the influence of molar ratios on phase separation, the binodal model was applied to the obtained binodal data. The NRTL and UNIQUAC models were employed to establish correlations for the tie-lines. Moreover, we examined the extraction capabilities of the aforementioned ABSs for three commonly used drugs: diclofenac potassium, acetaminophen, and salicylic acid. To assess the efficiency of extraction, partition coefficients and extraction efficiencies were calculated for each drug. The results revealed that the extraction efficiency of these drugs into the polymer-rich top phase is dependent on their hydrophobicity. Furthermore, we employed the Diamond-Hsu equation, along with its modified version, to establish correlations between the experimental partition coefficients of the drugs and NADES overall concentrations.

Liquid-liquid equilibrium measurements and computational study of salt-polymer aqueous two phase system for extraction of analgesic drugs.

In recent decades, aqueous two phase systems have gained a lot of attention for extraction of different materials. In this work, an aqueous two phase system was made by polyethylene glycol 600 and potassium hydroxide and phase diagram were determined for this system. The experimental binodal data were described using two empirical nonlinear three parameter expressions developed by Merchuk and Zafarani-Moattar. The consistency of the experimental tie-line data was determined by utilizing the Othmer-Tobias, Bancraft, and Setschenow correlations. Also, the extraction of two analgesic drugs, namely ibuprofen and acetaminophen were investigated by the mentioned ATPS. For this purpose, partition coefficients and extraction efficiencies of each drug were calculated. The trend of extraction efficiencies indicated that the responsibility of extraction of the mentioned drugs into the polymer-rich top phase is related to their hydrophobicity. The Diamond-Hsu equation and its modified version were used to correlate the drugs experimental partition coefficients. Furthermore, the interaction of mentioned drugs with polyethylene glycol was investigated employing quantum computing techniques based upon density functional theory (DFT). These results were in good agreement with the trend of extraction efficiencies of studied drugs.