Suitable Period Research Articles

Commercial Quality, Biological Indices and Biochemical Composition of Queen Scallop Aequipecten opercularis in Culture

Market demand for scallops has considerably increased in recent decades. Although natural populations of scallops are vulnerable, the queen scallop, Aequipecten opercularis, can represent a possible alternative to at-risk species. The aim of this study was to determine the effect of seawater parameters on the commercial quality, biological indices and nutritional quality of the scallop A. opercularis in 1900 L tanks in ex situ conditions. The condition index (CI) and meat yield (MY) peaked in autumn (89.92% and 40.29%, respectively). The muscle index (MI) showed the highest peak during the winter season (5.96%), while the gonadosomatic index (GSI) (34.06%) peaked in the spring months. Protein content (6.89–9.56 g/100 g), lipids (2.58–2.79 g/100 g) and carbohydrates (0.12–0.33 g/100 g) varied during the study period. Seasonal fluctuations in seawater temperature and pH negatively influenced the CI, MY and protein and lipid content, while positively affecting carbohydrate and moisture content. The most suitable period of the year for the consumption of the scallop A. opercularis was found to be the winter and spring periods, when the scallops achieved their highest nutritional value. It can be stated from this study that queen scallops in the Adriatic Sea have a high nutritional quality and that they can be proposed for higher human consumption.

The Influence of Temperature Control on Labour Productivity on Masonry Work

Purpose: This research focused on the influence of temperature on labour productivity on construction sites. Design/ Methodology/ Approach: A case study of a construction site at Cape Coast Technical University was adopted for the study, the sampling technique was a purposive method and the sample size was 100 which include contractors, site supervisors, masons, concrete operator and general foreman. The body temperatures of the gang were taken and catalogued to see how each worker fared in terms of their temperature throughout the working times and under the influence of the weather as the concrete work and block work were carried out. Labour output for the block work was measured by the area of block work laid per period and the concrete work was also measured. Findings: It can be seen that the mean body temperatures of the workers fluctuated in the day as work progressed. This was attributed to the fact that the sun’s intensity gradually increased overtime peaking at noon throughout the early afternoons. In the first and second hours of work, produced 2.172m3 of concrete each. The third and fourth hours produced 1.689m3 of concrete each and the fifth hour produced 1.44m3 of concrete. Based on the resulting productivity reduced steadily as temperature increases and at a temperature of 37degree Celsius the productivity of the labour output dropped to 1.44 m3. Research Limitation/ Implications: The study focused on the influence of temperature on construction labour productivity of masonry works. Practical Implication: The knowledge advanced in this study will inform construction managers of the factors that significantly influence construction labour productivity of masonry work to temperature. It will assist the construction managers to select a suitable period of the day to carry out the task when the temperature will not harm the construction workers. Social Implication: The knowledge advanced by this study will help policy-makers in the construction industry to review the existing national labour-intensive public works policy which is geared towards helping indigenous firms in improving productivity in the construction industry. Originality/ Value: The novelty of this study also lies in the labour productivity measurements that will guide construction managers to identify periods of the day that will not pose a hazard to the workers when executing their tasks. Keywords: Construction Management: Labour: Masonry: Productivity: Temperature: Ghana.

On the Choice of the Most Suitable Period to Map Hill Lakes via Spectral Separability and Object-Based Image Analyses

Technological advances in Earth observation made images characterized by high spatial and temporal resolutions available, nevertheless bringing with them the radiometric heterogeneity of small geographical entities, often also changing in time. Among small geographical entities, hill lakes exhibit a widespread distribution, and their census is sometimes partial or shows unreliable data. High resolution and heterogeneity have boosted the development of geographic object-based image analysis algorithms. This research analyzes which is the most suitable period for acquiring satellite images to identify and delimitate hill lakes. This is achieved by analyzing the spectral separability of the surface reflectance of hill lakes from surrounding bare or vegetated soils and by implementing a semiautomatic procedure to enhance the segmentation phase of a GEOBIA algorithm. The proposed procedure was applied to high spatial resolution satellite images acquired in two different climate periods (arid and temperate), corresponding to dry and vegetative seasons. The segmentation parameters were tuned by minimizing an under- and oversegmentation metric on surfaces and perimeters of hill lakes selected as the reference. The separability of hill lakes from their surrounding was evaluated using Euclidean and divergence metrics both in the arid and temperate periods. The classification accuracy was evaluated by calculating the error matrix and normalized error matrix. Classes’ reflectances in the image acquired in the arid period show the highest average separability (3–4 higher than in the temperate one). The segmentation based on the reference areas performs more than that based on the reference perimeters (metric ≈ 20% lower). Both separability metrics and classification accuracies indicate that images acquired in the arid period are more suitable than temperate ones to map hill lakes.

Evaluation of Tourism Climate Resources in Taishan Scenic Spot

Climate resources is a very important resource affecting tourism, is the main reference factor for people to go to tourist attractions. The routine evaluation of climate comfort index, including temperature and humidity index, cold index, clothing index, comprehensive comfort index, and climate tourism climate index, establish the linear regression equation and the tourism climate index and linear regression equation, evaluate the tourism climate resources of mount tai scenic spot in Shandong province. The analysis results show that the suitable period of Taishan is March to November, among which April to October is the best suitable travel period, Taishan scenic area in April and October, May to September tourism comfort is better, and January, February and December are not suitable for travel.

Assessment of COVID-19 Hospitalization Forecasts from a Simplified SIR Model

We propose the SH model, a simplified version of the well-known SIR compartmental model of infectious diseases. With optimized parameters and initial conditions, this time-invariant two-parameter two-dimensional model is able to fit COVID-19 hospitalization data over several months with high accuracy (e.g., the root relative squared error is below 10% for Belgium over the period from 2020-03-15 to 2020-07-15). Moreover, we observed that, when the model is trained on a suitable three-week period around the hospitalization peak for Belgium, it forecasts the subsequent two months with mean absolute percentage error (MAPE) under 4%. We repeated the experiment for each French department and found 14 of them where the MAPE was below 20%. However, when the model is trained in the increase phase, it is less successful at forecasting the subsequent evolution.

Effects of Global Warming on the Growth and Proliferation of Attached Sargassum horneri in the Aquaculture Area near Gouqi Island, China

With global warming, in recent years, golden tides have frequently occurred off the coasts of China. Sargassum horneri, which attach to aquaculture rafts, can float and form small-scale golden tides after falling off. Temperature will affect the growth and reproduction of algae. In order to explore whether the temperature is the potential influence factor of the golden tide outbreak, in this study, the effects of global warming on the growth and proliferation of S. horneri in the mussel aquaculture area of Gouqi Island will be discussed. Samples of the macroalgae were collected monthly from August 2021 to July 2022 at various stages of its life cycle, and the relationship between algal growth and temperature was analyzed based on the concept of effective accumulated temperature, combined with the parameters of sea surface temperature, photosynthetic rate, growth rate, and growth cycle. Based on the continuous temperature variation observed, the growth cycle could be divided into five stages: the decreasing temperature period (October to November), the low-temperature adaptation period (December), the second suitable low-temperature period (January to February), and the high-temperature decay period (February to May). The effective accumulated temperature stored by S. horneri from 2021 to 2022 was 2772.4 °C·d; compared with previous studies, it decreased by about 800 °C·d. The winter temperature in 2022 was higher than the average temperature in the previous 5 years, allowing the macroalgae to enter the reproductive period in advance. This had a significant impact on the blooming time of golden tides and led to an earlier outbreak and extinction. Therefore, in the future, we can set up a monitoring system for the early warning of golden tides according to the change of SST in winter.

1694. Coadministration of Rezafungin Does Not Impact the Pharmacokinetics of Cyclosporine, Ibrutinib, Mycophenolate Mofetil, or Venetoclax

Abstract Background Rezafungin (RZF) is a novel echinocandin antifungal (Figure 1) in development for treatment of candidemia and invasive candidiasis, and for prevention of invasive fungal diseases caused by Candida, Aspergilllus, and Pneumocystis (Figure 2). Vulnerable patient populations may receive antifungal prophylaxis with risks of drug-drug interactions (DDIs) that can alter the pharmacokinetics (PK) of immunosuppressive or anticancer agents. This study was conducted to evaluate the effect of RZF on cyclosporine (CY), mycophenolate mofetil (MM), venetoclax (VX), and ibrutinib (IB). Figure 1.Structure of RezafunginFigure 2.Rezafungin Phase 3 Program Methods A Phase 1, open-label study of 32 healthy inpatients (16 males [Group 1], 16 females [Group 2]) was conducted to assess DDIs between RZF (as perpetrator) and CY 200 mg, MM 500 mg (males only), IB 280 mg, or VX 50 mg (females only). Each was given alone and w/ IV RZF (1 h infusion; 400 mg followed by once-weekly 200 mg) with a suitable washout period between dosing (Figure 3). Validated LC-MS/MS methodology was used to determine plasma concentrations of mycophenolic acid, IB, VX and CY. Figure 3.Open-Label, Phase 1, DDI Study Design Results The PK of all 4 drugs were similar w/ and w/o RZF. Comparison of the exposure (AUC and Cmax) of the drugs given alone or w/ RZF is presented in Table 1. There were no clinically meaningful changes in exposure. Overall, all study drugs were well tolerated. Ten subjects (29.4%) experienced adverse events (AEs) following the administration of the substrate drugs alone and 15 subjects (46.9%) experienced AEs for the substrate drugs w/RZF. There were no deaths or serious adverse events. The most commonly reported AEs were headache and nausea. The majority of AEs were of mild intensity. Two subjects had one severe AE each (abdominal pain related to both RZF and VX and esophagitis related to CY). No trends in safety laboratory results were identified. Table 1.Summary of Statistical Comparisons of Cyclosporine, Mycophenolic Acid, Ibrutinib and Venetoclax Pharmacokinetic Parameters Following Administration of Cylosporine (200 mg), Mycophenolate Mofetil (500 mg), Ibrutinib (280 mg), and Venetoclax (50 mg) alone and in Combination with Rezafungin Conclusion Once weekly IV administration of RZF w/ single doses of CY, IB, MM and VX did not result in any clinically meaningful change in the exposure of the concomitant medications. No dose adjustments of CY, MM, IB, or VX are expected to be necessary when given in combination w/ RZF. The administration of RZF 400 mg followed by 2 once weekly doses of 200 mg, coadministered w/ CY, IB, and MM or VX, in healthy subjects was considered generally well-tolerated with an acceptable safety profile. Disclosures Shawn Flanagan, PhD, Cidara Therapeutics: Employee|Cidara Therapeutics: Stocks/Bonds Taylor Sandison, MD, MPH, Cidara Therapeutics: Employee|Cidara Therapeutics: Stocks/Bonds.

On the Finite-Time Stabilization for a Class of Interconnected Switched Nonlinear Systems via Sampled-Data Output Feedback Control

This article investigates the problem of finite-time stabilization for a class of interconnected switched nonlinear systems (ISNS) via sampled-data output feedback control. First, for each subsystem, the state observers and sampled-data output feedback controllers are constructed. Second, with a selected design parameter and a suitable sampling period, the finite-time stabilization is proved based on the homogeneous theory and related inequalities for the discussed ISNS. Finally, the effectiveness of the presented control method is verified with a numerical example and a practical example.

Impacts of different fencing periods and grazing intensities on insect diversity in the desert steppe in Inner Mongolia

For the past several decades, both species biodiversity and productivity of desert steppe have been reduced due to excessive use and climate factors. To counteract this, Chinese government has supported large-scale grassland ecological restoration programs since the year 2000. The policy needs a standard for the evaluation of the effects of such restorative measures on the grasslands after decades. Grassland insect diversity plays an important role in the maintenance of plant species and functional diversity. To understand the relation of grazing management and insect diversity, we use a complete two factor design, two fencing periods (3 or 7 years) and three grazing intensities (0, 6, or 12 sheep per ha), to examine the response of the insect diversity to fencing and grazing in desert steppe. We found almost no significant differences in either plant or insect species diversity between the sites fenced for 3 and 7 years, as the pressure of grazing increased, insect diversity decreased to a greater extent at 7-year enclosure sites than at 3-year sites. We recommend the most suitable grazing intensity for the sustainability of biodiversity of the desert steppe in Inner Mongolia is light grazing (8 sheep/ha 0.5 yr−1), and the most suitable fencing period is three years, which suggest that policies that remove livestock from the desert grassland for long periods (7 + years) are not beneficial for maintaining insect diversity, and heavy grazing lead ecological environment weaker and insect diversity decreasing. Thus, periodic livestock grazing is important in the design of management actions to preserve biodiversity.

Modeling, Experimental Analysis, and Optimized Control of an Ocean Wave Energy Conversion System in the Yellow Sea near Lianyungang Port

In this paper, an ocean wave energy conversion system (OWECS) is modeled and experimented in the Yellow Sea near Lianyungang port, and an optimized control method based on the sliding mode control is proposed to improve the efficiency of OWECS. Firstly, a motion model of a double-buoy OWECS is presented using a complex representation method, and the analysis results indicate that the efficiency of converting ocean wave energy into the outer buoy’s mechanical power is highest in a suitable ocean wave period. Secondly, a double-buoy OWECS is constructed and experimented in the Yellow Sea near Lianyungang port, which verified the correctness of the above analysis results. Lastly, in order to further improve the efficiency of the double-buoy OWECS, a sliding mode control method based on a linear generator is proposed to realize the phase synchronization between the outer buoy and ocean waves, and the simulation results may be beneficial for the next ocean test of the double-buoy OWECS.

Experimental Investigation of Nanosilica Gel Properties for Well Integrity Remediation

This study investigates the role of clay mineral, polyacrylamide additive, and nanosilica solution in the creation of a cross-linked gel for well cement repair. Several experimental setups were developed using a rotational viscometer and an Anton rheometer to investigate the impact of nanosilica particles on the rheology and performance prediction of the sealing gel. The results of varying the nanosilica concentration revealed that silica solution with a concentration of 15–25 wt % produced a lower gel strength property over a suitable gelation period, whereas silica solution with a concentration of 30–40 wt % displayed a higher gel strength property but with a short gelation time. The findings also demonstrated that adding 0.15 wt % polyacrylamide (PAM) to 18 wt % nanosilica significantly enhanced the properties of the gel, increasing about 135% in the gel strength, 429% in the yield point, and 122% in the storage modulus without posing any operational issues. The gelation of the nanosilica solution in the downhole environment, on the other hand, was shown to be greatly improved by the clay mineral bentonite, which was present in the formation rock. This research’s findings have improved the oil and gas industry’s understanding of the materials that might be used to improve a sealing gel’s rheological properties for well integrity operations.

Decannulation Timing is an Expression of Neurological Recovery Time: The Need to Define a Performance within a Time Frame

Introduction: The factors that influence the likelihood of tracheostomy tube weaning in patients with severe acquired brain injury (sABI) are fairly well known, and recently it has been pointed out that improving swallowing and cough resistance are among the most important. What has not yet been focused on is the “passage of time” factor and how much it affects weaning opportunities. Objective: With this study, we wanted to analyze how the probability of decannulation varies over time, consistent with neurological improvement. Method: We examined the tracheostomy database of our neurological rehabilitation unit, which reports data from 359 patients with sABI, hospitalized between 2000 and 2012, and all carriers of tracheostomy tube upon admission. The sample was divided into two groups based on the time gap between the acute event and admission to rehabilitation, an Early Group = 60 days and a Late Group > 60 days. The probability of decannulation, both overall and subdivided by groups, was then evaluated. Results: The E-Group showed better functional scores at discharge and a better percentage of decannulation compared with the L-Group. The differences were statistically significant, but later decannulations were not unusual: 12% late weanings versus 88% earlier. The probability of decannulation increases over time and is a factor dependent on the degree of neurological and functional recovery. It is of primary importance to consider these aspects when making comparisons between different centers, defining a product standard or performing benchmarking analyses. Conclusions: The rehabilitative prognosis for decannulation can be reliably judged only after a suitable and well-defined period of time, because the probability of tube weaning has been shown to be strongly dependent on the amount of time that passes. This study also showed that effective decannulations can be achieved even more than 6 months after the acute event, although with significantly lower probabilities.

Sustainable Production and Activity Determination of Serum-Free Conditioned Medium from Menstrual Blood-Derived Endometrial Stem Cells.

Mesenchymal stem cells (MSCs) have exhibited great potential as a regenerative medicine, and MSC-derived paracrine effects, mainly including the secretion of various bioactive factors, play critical roles in MSC-based therapies. MSC-derived serum-free conditioned medium (MSC-CM) is defined as the secretome of MSC-derived bioactive factors and is considered a new cell-free therapeutic agent for disease treatment. However, the MSC-CM used in previous studies was prepared by a nearly disposable method that the MSCs were discarded after preparing MSC-CM, and the preparation time was variable; simultaneously, the viability changes of MSCs after MSC-CM preparation are still unknown. Therefore, this study takes MenSCs as a research project and aims to explore the suitable period of sustainable MenSC-CM preparation rather than using a disposable method. As expected, our results confirmed that MenSC-CM improves viability of both naïve targeted cells and H2O2-injured targeted cells, and suggested that 36h is suitable for sustainable MenSC-CM preparation in which the angiogenic factors almost reach to the peak. Simultaneously, the MenSCs used to prepare the MenSC-CM for 36h also maintained preferable cell viability and could be sustainably used for further MenSC-CM preparation. Moreover, the in vivo results further confirmed the improvement of MenSC-CM on promoting skin wound healing. Consequently, our results not only provide support for optimizing MSC-CM sustainable preparation based on various MSCs but also promote the comprehensive application of MenSCs in the clinic.

Effect of Different Date of Sowing on Rice (Oryza sativa L.) Seedling Blight Disease under Nursery Conditions

Aims: The main objective of this study was to find appropriate suitable period for raising rice nurseries to summer cultivation for improved seed germination and reduced seedling mortality in nursery under South Gujarat conditions of India.
 Study Design: Large Plot Technique.
 Place and Duration of Study: Regional Rice Research Station, Navsari Agricultural University, Vyara, Gujarat (Zone II, Agro ecological situation V), India during 2020-21.
 Methodology: Seeds of rice variety GNR-3 was sown in raised bed nursery at 10 days interval from 20 November, 2020 to 9 January, 2021 under open field condition. .Frequently light irrigation gave to maintained soil moisture. Per cent seed germination (%), seedling mortality, root and shoot length (cm) were recorded at 21 days after sowing (DAS) and 35 DAS.
 Results: the present studied revealed that highest seed germination 62.83 per cent was observed in seeds was sown on 30th November. Whereas minimum seedling mortality 10.03 percent was recorded in seeds sown on 20th November, at 21 days after sowing (DAS).While, maximum seedling mortality, 39.93 per cent was recorded in seed sown on 9th January. Similarly, at 35 DAS, minimum seedling mortality 17.25 per cent was recorded in seeds sown on 20th November. Maximum seedling mortality (43.76%) was observed in seeds sown on 9th January. Maximum root length 11.30 cm was recorded in seeds sown on 9th January. Maximum shoot length 26.6 cm was observed in seeds sown on 30th November.
 Conclusion: Highest per cent seed germination, minimum seedling mortality and good root and shoot growth were observed in rice nursery sown between 20-30 November.

A Simulation Experiment on Quality Dynamics of Reclaimed Water under Different Flow Exchanges.

Reclaimed water plays an important role in maintaining urban aquatic ecosystems, especially in areas with water shortages. However, there is little information on water quality dynamics and its driving mechanism in reclaimed water bodies. The simulated experiments were conducted to investigate the effect of flow exchange on water quality dynamics and soil microbial diversity for 100% reclaimed water and mixed water (50% reclaimed and 50% stream water), and the exchange periods ranged from 2 to 40 days. The results showed that the degradation coefficients (K) of CODMn and NH3–N were 0.015 d−1 and 0.001 d−1 for the mixed water, while their K values were negative for the reclaimed water. The flow exchange had little effect on water quality dynamics for the mixed water, which may be attributed to the relatively low concentration of TP in this reclaimed water. A small or great exchange period led to a relatively high fluctuation in K during the experimental period and corresponded to a worse soil microbial diversity. These results indicate that it is not recommended to fill an isolated urban lake with 100% reclaimed water and that a suitable flow exchange period of 5~10 days could help self-purify the water quality.

Purity prediction of the two‐stage high voltage electrostatic separation of a mixture of three polymers

AbstractClean and efficient separation is an important requirement for the high‐value‐added recycling of end‐of‐life automobile polymers. In this study, polymer particles for vehicles were considered as research objects, and a two‐stage electrostatic separation device was designed to separate a mixture of three polymer particles. A kinematic model of friction‐charged particles in a two‐stage free‐fall separator was established. Then, a suitable time period for triboelectrostatic charging with regard to electrostatic separation was determined, and a charge–mass ratio distribution of mixed‐polymer particles, that is, polyamide (PA), polypropylene (PP), and polyethylene (PE), was measured using a Faraday cage based on the triboelectrostatic charging experiment of three types of particles in a friction barrel‐type tribocharger. The theoretical purities of PA, PP, and PE were calculated using the motion and particle charge–mass ratio distribution models were 100.00%, 89.51%, and 92.95% respectively. The experimental purities of PA, PP, and PE were 94.68%, 80.76%, and 84.27%, respectively, which is consistent with the theoretical purity. Results of the study can provide a theoretical and experimental reference for one‐pass electrostatic separation of three kinds of plastic particles.

An Appraisal of Models for Roads Pavement Failures in Ebonyi State Nigeria

Nigeria road pavement is subjected to have low road density of 23km/m2 of the pave land area and justification for this material stress, functional disability and loss of cohesion. In Ebonyi state there is needs to assess the impact of failed road pavement on economic growth and social stability of the state. Most of the state urban roads failed because of many vehicles passing in definite section of the road per unit time at any suitable period, subjecting the paved areas into physically disintegration of crystalline aggregated material informed of ruttings, pothole, raveling and cracks and some deteriorate or decomposed in a large number of cement aggregate into organic matter causing chemical separations and moisture attack on the paved area by attacking the fabric bond of the binding pavement. The aim of this research is to analyze roads pavement failures for effective cost management. The research design comprised extensive literature. This research was to facilitate the measurement of variables on affected areas causing surface depression and surface deterioration on large number of aggregated crystalline material from rehabilitation of the respective road projects. The research was design to measure stress types, stress values, stress seventy and stress density derive from affected paved area. The data collected were presented in tables, percentage, and pie chart and analyzed with multiple regressions. The findings will establish the state of stress over strain will be sustainable for road pavement in urban areas. The model implies based on the data collected the cause of stress values in urban roads increase by 0.284 (28.4%) were trigger increase in road rehabilitation, repairs and remedial works by 0.77, 0.31 and 0.60 and which were ascertain the level of cost implementation for effective life cycle costing on urban roads in the state.

Changes in Bioactive Compounds, Antioxidant Activities and Chemical Properties of Pickled Tea By-Product Fermentation: Promising Waste Management and Value-Added Product

Pickled tea is an ethnic fermented product produced using Assam tea (Camellia sinensis var. assamica) leaves. It is produced in large quantities every year and the liquid waste from its production is estimated to be up to 2500 mL per every kilogram of pickled tea production. To reduce the waste, pickled tea juice remaining from the process was developed into (1) pineapple kombucha and (2) formulated functional drinks as “value added” products. The juice used for making kombucha was collected at 15 days of pickled tea fermentation due to its high value in antioxidant activity (previous study, 2250 µmol TE per g DW). After fermenting the juice with starter culture, the properties of pineapple kombucha were assessed at 0, 1, 3, 5, 7, 9, 11 days. Results showed that the total phenolic of pineapple kombucha was reduced, while antioxidant assay (FRAP and ORAC) slightly increased. The most suitable fermentation period of pineapple kombucha was at day 3. The formulated drink was made from mixing pineapple kombucha with ginger and lemon juice at various ratios including 100:0:0, 80:10:10 and 80:15:5. The ratio 80:10:10 gave the highest TP and antioxidant activity for the functional drink. In addition, for sensory analysis, liking attribute of 80:15:5 fermented juice kombucha pineapple favor was significantly higher compared to other formulations. The study demonstrates the promising second fermentation process of by-product juice from pickled tea production for the conversion to value-added functional drink with reasonable antioxidant properties.

A Fuzzy-Based Method for Objects Selection in Blockchain-Enabled Edge-IoT Platforms Using a Hybrid Multi-Criteria Decision-Making Model

The broad availability of connected and intelligent devices has increased the demand for Internet of Things (IoT) applications that require more intense data storage and processing. However, cloud-based IoT systems are typically located far from end-users and face several issues, including high cloud server load, slow response times, and a lack of global mobility. Some of these flaws can be addressed with edge computing. In addition, node selection helps avoid common difficulties related to IoT, including network lifespan, allocation of resources, and trust in the acquired data by selecting the correct nodes at a suitable period. On the other hand, the IoT’s interconnection of edge and blockchain technologies gives a fresh perspective on access control framework design. This article provides a novel node selection approach for blockchain-enabled edge IoT that provides a quick and dependable node selection. Moreover, fuzzy logic to approximation logic was used to manage numerical and linguistic data simultaneously. In addition, the Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS), a powerful tool for examining Multi-Criteria Decision-Making (MCDM) problems, is used. The suggested fuzzy-based technique employs three input criteria to select the correct IoT node for a given mission in IoT-edge situations. The outcomes of the experiments indicate that the proposed framework enhances the parameters under consideration.

CLINICAL OUTCOMES OF REVERSAL OF HARTMANN’S PROCEDURE

Background. Reversal of Hartmann’s procedure (HP) is one of the most complex surgical interven­tions in abdominal surgery with high morbidity rates of up to 58% in the patients after HP and mortality of up to 3.6%. Objective. This was a retrospective observational study to analyze the Hartmann’s reversal (HR) outcomes. Methods. The study involved 31 patients (16 males and 15 females), average age 59.6±10.31 (range 26-80), who underwent HR at Ternopil Regional Hospital in 2010 - 2021. The reasons for the HP were: cancer in 20 (64.5%) cases, perforation of the diverticulum – 6 (19.3%), traumatic rupture – 3 (9.7%) and Crohn’s disease - 2 (6.4%) cases. Results. Median time from Hartmann’s procedure to reversal was 11.13±9.24 months (interval 3-38). Intraoperative time was 210.33±56.91 minutes (range 120-330). HR was performed in 30 (96.8 %) patients. Dense pelvic adhesions of the stump of the rectum was diagnosed in 13 (41.9%) patients. Hand-sewn anastomosis was performed for 22 (71%) patients, stapler anastomosis – 4 (12.9%), pull-through technique – 3 (9.7%) patients. AL occurred in 3 (9.7%) patients on the 15th, 23rd and 35th postoperative days. pseudomembranous colitis was diagnosed in 2 (6.4%) patients with AL. The mortality rate was 1 (3.3%) as a result of septic complications due to AL; this case was not operated by a colorectal surgeon due to administrative issue in the hospital. Conclusions. Hartmann’s reversal is still one of the most difficult operations in colorectal surgery with high incidence of postoperative complications. Sound selection of patients with low comorbidity and in suitable time period is crucial for successful HR.