bluuebunny/crossref_metadata_2025_split huggingface dataset:
Vulnerabilities and Strengths of Pregnant Haitian Adolescents and their Families During Transition to Motherhood
Authors: Philibert Léonel , Lapierre Judith 
Published: October 2022

Background and Objective: Teenage pregnancy is considered a social and health problem because of its multifaceted consequences for pregnant teens, their family and society. The objectives of this article are 1) to describe the vulnerabilities encountered by pregnant teenagers and their relatives throughout the time of transition from pregnancy to motherhood and 2) to identify the strengths that are mobilized by these individuals during this period.
Methods: The qualitative data collection and analysis methodology was based on John Dewey’s Social Inquiry. Participants were recruited from nine health institutions in the North and Northeast departments of Haiti. Data were collected through individual semi-structured interviews, which were audiotaped, transcribed, and exported for coding after verification and validation. The data were analyzed using the thematic analysis of Paillé and Mucchielli.
Results: A total of 50 interviews were conducted with 33 pregnant teenagers (aged 14 - 19 years) and 17 relatives. This research identified vulnerabilities and strengths experienced by the adolescent participants and their relatives during the motherhood transition.
Conclusion and Global Health Implications: The experiences, challenges, and vulnerabilities associated with the teenage-motherhood transition and the needs of pregnant teens, partners, and parents were identified in this study. The results indicated that more attention must be given to psychosocial and material support programs for pregnant adolescents and their loved ones during the motherhood transition and after-childbirth period. When logically and effectively implemented, the study results and suggested recommendations can be used as tools for reaching local and global public-health initiatives in Haiti.

Copyright © 2022 Philibert and Lapierre. Published by Global Health and Education Projects, Inc. This is an open-access article distributed under the terms of the Creative Commons Attribution License CC BY 4.0.
Progressive Technology for Processing Optical Parts
Authors: Kozeruk A. S. , Filonova M. I. , Kuznechik V. O. , Shevchenko V. P. , Yakubovic T. S. 
Published: October 2022

The problems of modern technology for processing lenses for optical devices are noted. Among these problems, the temperature deformation in the process of blocking with adhesive resin has the greatest effect on the quality of parts. It is substantiated that this problem can be solved using a technology that allows simultaneously processing both surfaces of the lens blank when it is fixed to the non-working surface using a photopolymer resin that hardens under the influence of ultraviolet radiation. A scheme of a device for implementing the proposed technology for processing parts with executive spherical surfaces, in particular lenses, with their vertical orientation in the processing zone, which improves the distribution of the abrasive suspension during shaping and thereby increases the intensity of stock removal, is proposed in the paper. Mathematical modeling of the nature of the processing of spherical surfaces of parts of optical devices under the conditions of a power circuit has been performed and a formula has been obtained for calculating the friction paths in the zone of contact between the tool and the surface to be machined. The use of this expression makes it possible to identify the optimal modes of lens shaping, which provide satisfactory quality and the level of intensity of stock removal.
Efficient Multi-Layer Wall Panel
Authors: Sizov V. D. , Pavlovskaya A. V. 
Published: October 2022

A comprehensive analysis of the multilayer wall panel has been performed. The heat-insulating layer, the thickness of which affects both the dimensions of the enclosing structure and the heat-shielding efficiency of the wall panel, has been studied,. Reducing the thickness of the thermal insulation layer is an important issue, since the production of three-layer panels is expensive in energy and material terms. The features of using a different number of screens to reduce the size of the thermal insulation layer are presented. An example of the possibility of a maximum reduction in the size of the heat-insulating layer, when the thickness of the interlayer din cannot be less than 3–5 mm is given. It is shown that the total thickness of the thermal insulation layer will be 0.057 m in the presence of the maximum possible number of screens – 12. For these conditions, the temperatures in the enclosure planes are calculated, according to the values of which the values of the maximum partial pressures E and partial pressures of water vapor e are determined (for the variants of perforated е¢ and non-perforated е¢¢ screens). According to the obtained values the dependences E, е¢, е¢¢ on the temperature in the planes of the fence are constructed. The calculations carried out and a general assessment of the heat and humidity regime in the enclosing structures were confirmed with the help of the compiled program and the calculation of the necessary parameters е and t in the layers of the structure. It has been established that various shielding materials can be used to exclude condensation zones during the operation of enclosing structures.
Methodological Support for Assessing Development Level of Logistics Infrastructure
Authors: Ivut R. B. , Popov P. V. , Lapkovskaya P. I. , Merkulova O. P. 
Published: October 2022

The paper presents the results of a study in the field of assessing the level of development of the logistics infrastructure of the regions. The analysis of existing approaches and methods for assessing the logistics infrastructure revealed that most of them take into account mainly the transport component of the logistics infrastructure, and the financial and information components are represented by indicators of foreign direct investment in human capital and the cost of logistics facilities. At the same time, the assessment of some indicators is carried out by researchers mainly with the help of expert methods. To assess the level of development of the logistics infrastructure of the regions of the Republic of Belarus for the purpose of their comparative analysis and study of the dynamics, a methodology has been developed for assessing the logistics infrastructure of the regions. In order to eliminate the identified features of existing approaches to the assessment of the logistics infrastructure, the methodology presented by the authors used indicators that describe the development of both the transport and storage, information and financial components of the logistics infrastructure using economic and mathematical methods for processing and evaluating data. After selecting indicators and collecting data on them, an assessment was made of the correspondence of the distribution of indicator values in the sample to the normal distribution law using the Kolmogorov – Smirnov criterion with a check for multicollinearity. Further, all indicators were transferred to one measurement scale and the internal consistency of the indicators was checked using the a-Cronbach coefficient. To test the developed methodology, a comparison was made of the logistics infrastructure of the regions of the Republic of Belarus and an assessment of its dynamics based on data for 2015, 2018 and 2021, using factor analysis. Calculations for all stages of the developed methodology were carried out using the IBM SPSS Statistics 20 program.
A Critical Survey of the Rheological Properties Used to Predict Friction Reducer Performance
Authors: Aften Carl W , Asgari Yaser , Warren Sharon 
Published: October 2022

Abstract
Increased interest in correlating rheological properties to the prediction of proppant transport and/or friction reduction performance produces sporadic and isolated experimental evidence. Obtaining accurate results specifically for viscosity, proposedly representative of proppant transport and friction reduction, is challenging and therefore, extrapolating polymer melt rheology to dilute polymer solutions is problematic particularly when applying linear viscoelastic theory. This paper presents a simultaneous, multivariable research approach illustrating how viscoelastic results and hypotheses for anionic, cationic, and amphoteric friction reducers in various brines provide insight into the limitations of constricted variable and experimental range methodology.
Establishing a relevant application window for viscoelastic friction reducers is complicated. Guar gum linear gels are viscous in nature and more approachable than synthetic friction reducers when manipulated for rheological experimentation and field application extrapolation. However, crosslinking of guar gum linear gels results in a viscoelastic fluid of greater complexity, thus even the simplest of linear gels must be subjected to a variety of unique bench tests differentiated by and specific to individual service companies’ field application requirements. Friction reducers’ crossover of storage and loss moduli are dependent upon how the reducers were dispersed and hydrated with respect to brine characters, times, and mixing energies. Furthermore, correlating rheological measurements developed for the melt state may not appropriately adapt to the friction reducer application's dilute polymer state.
Response surfaces were generated for various anionic, cationic, and amphoteric friction reducers with testing variables including brine type, loading, mixing rpm, mixing duration, shear rate, linear shear strain, responses of viscosity, and moduli with corresponding cross over results. Excellent regression was obtained from these complex, interactive response surfaces, revealing the breadth of variability obtained from complex experimentation and validating that studies using simplistic procedures provide limited and potentially biased performance conclusions.
When relating rheology to friction reduction and proppant transport, whether in the lab or the field, and understanding the complexities of polymer absolute dispersion, dissolution, and kinetics indicate that, with respect to performance prediction, limited knowledge is gained from simple polymer make down regimens. This work offers a guideline for assimilating comprehensive studies of complex versus oversimplified, limited scope rheological measurement research and analyses.
Optimized X-Ray Diffraction Analysis Predicts the Swelling Potential of Shales
Authors: Ivanishin Igor , Abell Bradley , Nasrabadi Hadi 
Published: October 2022

Abstract
The presence of expandable clay minerals within the reservoir and source rocks causes many issues over the life of the well. These include wellbore instability and increased mud losses during drilling operations, complications and decrease in production during and after hydraulic fracturing, etc. Existing standard laboratory test methods, e.g., capillary suction time test, do not adequately predict swelling potential. The present work provides the technique to determine the properties and quantify the concentration of expandable clay minerals, thus predicting the swelling potential of clay-rich rocks. A collection of ash layer and bentonite mine samples has been analyzed for the bulk and clay fraction mineral composition and swelling in completion fluids. Comparison of X-ray diffractograms recorded from air-dried and ethylene glycolated clay fractions of ash layer samples confirmed the absence of discrete smectite but revealed the presence of interstratified illite/smectite and illite. X-ray diffractograms of all the ethylene glycolated samples have characteristic complex reflections with two maximas: one between 6.8–7.8°2θ (11.3–13.1 Å), another between 9.3–9.6°2θ (9.3–9.5 Å). Both correspond to the 001 reflection of interstratified illite/smectite mineral, and not a pure endmember illite or smectite. Two properties of this mineral vary among the samples and influence their expandability: (1) illite:smectite ratio in the range 3:2–9:1, and (2) the nature of the interstratification, i.e., the degree of ordering. The shifts of the peak maximas in the regions 6.8–9.6°2θ and 42.0–48.0°2θ are used to calculate the proportion of the component layers. Proposed technique of optimized XRD analysis reveals that the samples containing less illite/smectite mineral, but the higher concentration of smectite layers in this mixed-layer mineral are more expandable. Optimized XRD analysis correctly predicts the swelling potential of a given clay-rich zone (e.g., ash layer) as confirmed by confined immersion testing. Provided technique of XRD analysis is fast, requires small quantities of sample, and could possibly be integrated to field logs in the future. Obtained knowledge can be applied by engineers and researchers working with shale formations around the world.
An Inventory Model for partial backlogging Items with memory effect
Authors: PAKHIRA RITUPARNA , GHOSH UTTAM , GARG HARISH , Mishra Vishnu Narayan 
Published: October 2022

Abstract
In this paper, an EOQ model has been considered where the demand rate is constant for both the stock period and stock out period (i.e. for the period of shortage) and during shortage i.e. stock out period, demand is partially fulfilled at a constant rate. The holding cost here is assumed as time-dependent.The effect of constant backlogging rate and variable backlogging rate are discussed depending on the previous model and present model.Inventory and related phenomena are of agreat importance in the study memory effect.To incorporate memory effect,the model can not be described by the standard ordinary differential equation,it should be developed by standard fractional order differential equation.Moreover,in order to show the relationship between fractional models and standard ordinary first order differential equations,two type of memory indices consider(i) Differential memory index,(ii) integral memory index,equationg two indices to 1,the model would be considered as memoryless model.Different type partial backlogging rate i.e. high partial backlogging rate and low partial backlogging rate has been considered and it is observed that at certain order of differential memory index i.e. at a level of memory effect,profit is equal for high partial backlogging rate and low partial backlogging rate.Atlast,some recommendation is given to develop another paper with the help of this paper.
A Surgical Decision-making Scoring model for spontaneous ventilation- and mechanical ventilation-video-assisted thoracoscopic surgery in non-small-cell lung cancer patients
Authors: Wang Runchen , Wang Qixia , Liang Hengrui , Qiu Jiawen , Chen Chao , Jiang Yu , Zhao Lei , Wang Wei 
Published: October 2022

Abstract
Backgrounds
Spontaneous ventilation-video-assisted thoracoscopic surgery (SV-VATS) has been applied to non-small cell lung cancer (NSCLC) patients in many centers. Since it remains a new and challenging surgical technique, only selected patients can be performed SV-VATS. In this study, we aim to develop a clinical decision-making model to make surgery decision between SV-VATS and MV-VATS in NSCLC patients more objectively and individually.
Methods
5,580 NSCLC patients undergoing SV-VATS or MV-VATS in the department of thoracic surgery between 2011 and 2018 were included. Univariate and multivariate regression analysis were used to identify potential factors influencing the surgical decisions. The performance of the model was validated by area under the receiver operating characteristic curve (AUC), calibration curves and decision curve analysis (DCA).
Results
The Surgical Decision-making Scoring (SDS) model was built guided by the clinical judgment and statistically significant results of univariate and multivariate regression analyses of potential predictors, including age (p < 0.001), smoking status (p = 0.03), BMI (p < 0.001), T stage (p < 0.001), N stage (p = 0.02), ASA grade (p < 0.001) and surgical technique (p < 0.001). The AUC of the training set and the test set were 0.73 (0.13, 0.61 - 0.74) and 0.76 (0.13, 0.62 - 0.77), respectively. The calibration curves and the DCA curve revealed that the SDS model has a desired performance in predicting the surgical decision.
Conclusions
This SDS model is the first clinical decision-making model developed for an individual NSCLC patient to make decision between SV-VATS and MV-VATS.
The utility of near infrared spectroscopy for estimating the mixed venous saturation in children: insights using data from extracorporeal membrane oxygenation
Authors: Loomba Rohit S. , Farias Juan S. , Villarreal Enrique G. , Flores Saul 
Published: October 2022

Abstract
Background: As near infrared spectroscopy (NIRS) offers a noninvasive means by which to monitor regional venous saturation, this study set forth to determine the correlation between near infrared spectroscopy values and mixed venous saturations (SvO2) obtained while on veno-arterial extracorporeal membrane oxygenation (VA-ECMO).
Methods: This was a single-center retrospective study which included pediatric patients who required VA-ECMO and had cerebral and renal NIRS values between November 2020 through November 2021. Demographic data, SvO2, and cerebral and renal NIRS were collected in all patients. A Bayesian linear regression was done to model the SvO2 using the NIRS values. A venous saturation estimate was calculated by averaging the NIRS values. A Bland-Altman analysis and a Bayesian Pearson correlation coefficient calculation were performed between the actual SvO2 and both the modeled and the average-estimated SvO2.
Results: Data from a total of nine patients were used in the final analyses. Bayesian linear regression analyses demonstrated that both cerebral and renal NIRS values were statistically significantly associated with the measured SvO2. The mean difference between the estimated and measured SvO2 was -19 (-34 to -5). The Bayesian Pearson correlation coefficient was 0.574 (0.492 to 0.642). When the SvO2 was estimated with a simple average of the cerebral and renal NIRS values, the mean difference between the average estimated and measured SvO2 was 2 (-14 to 18). The Pearson correlation coefficient was 0.530 (0.443 to 0.604).
Conclusion: Regional NIRS can be used to estimate SvO2 in critically ill children with moderate correlation in patients in VA-ECMO.
Were Surgical Outcomes for Acute Appendicitis Impacted by the COVID-19 Pandemic?
Authors: Waldman Rachel , Kaplan Harrison , Leitman I. Michael 
Published: October 2022

Abstract
Background
The COVID-19 pandemic disrupted healthcare systems throughout the world. We examine whether appendectomy outcomes in 2020 were affected by the pandemic.
Methods
We conducted a retrospective cohort study of 30-day appendectomy outcomes using the ACS-NSQIP database from 2019 and 2020. Logistic regression and linear regression analyses were performed to create models of post-operative outcomes.
Results
There were no associations between year of surgery and death, post-operative blood transfusions, readmissions, sepsis, or length of stay. There was an increase in septic shock in the first quarter (p = 0.033), reoperations in the third quarter (p = 0.027), and rates of complicated appendicitis in the fourth quarter (p = 0.001) of 2020 compared to corresponding quarters of 2019. Total operative time was longer in the first three quarters of 2020 than 2019.
Conclusions
There were minimal differences in emergent appendectomy outcomes in 2020 compared to 2019. Surgical systems in the US successfully adapted to the challenges presented by the COVID-19 pandemic.
Clustering of Charged Colloidal Particles in Microgravity Environment of Space
Authors: Yamanaka Junpei , Miki Hiroyuki , Ishigami Teruyoshi , Okuzono Tohru , Toyotama Akiko , Mata Jitendra , Komazawa Honoka , Takeda Yushi , Minami Madoka , Fujita Minori , Doi Maho , Higuchi Tsunehiko , Takase Hiroshi , Adachi Satoshi , Sakashita Tetsuya , Shimaoka Taro , Nagai Masae , Watanabe Yuki , Fukuyama Seijiro 
Published: October 2022

Abstract
We conducted a charge-charge clustering experiment of positively and negatively charged colloidal particles in aqueous media under a microgravity environment at the International Space Station. A special setup was used to mix the colloid particles in microgravity and then immobilize these structures in gel cured using UV light. The samples returned to the ground were observed by optical microscopy. The space sample of polystyrene particles with a specific gravity d (=1.05) close to the medium had an average association number of approximately 50% larger than the ground control and better structural symmetry. The effect of electrostatic interactions on the clustering was also confirmed for titania particles (d~3), whose association structures were only possible in the microgravity environment without any sedimentation they generally suffer on the ground. This study suggests that even slight sedimentation and convection on the ground significantly affect the structure formation of colloids. Knowledge from this study will help us to develop a model which will be used to design photonic materials and better drugs.
Optimization of Energy Consumption Model of Laser Cladding Technology for Green Additive Manufacturing
Authors: MIAH MD HELAL , Chand Dharmahinder Singh , Malhi Gurmail Singh 
Published: October 2022

Abstract
Regarding the complexity of energy consumption (EC) mechanisms and unpredictable EC in the additive manufacturing (AM) process, this research illustrates the laser cladding system's EC modelling and analysis method. Initially, according to the laser cladding system's working principle and EC characteristics, it is divided into five subsystems. Then, the energy consumption model (ECM) of each subsystem and the ECM of the whole laser cladding system are obtained through theoretical and experimental analysis. Finally, the ECM and specific EC were analysed in the cladding experiment. In this research cladding matrix and cladding material are both 316L Stainless steel. The results showed that the errors between the prediction results of EC and specific EC and the experimental measurement results were 1.37% and 2.17%, respectively, which indicate the accuracy and effectiveness of the model. The model has practical value in predicting the laser cladding system's EC, improving the process route, and achieving green development. The proposed method can also provide a reference for the EC research of other AM technologies.
An innovative approach: Withdrawing the drain sudden allows fistula closure in some prolonged postoperative fistulas
Authors: Hasırcı İsmail , Ulutaş Mehmet Eşref , Şimşek Gürcan , Erşen Ogün , Kartal Adil , Yurtçu Müslim , Alkan Selman , Arslan Kemal 
Published: October 2022

Abstract
Background: Different attitudes are followed in the literature regarding the treatment of postoperative fistulas. We have concluded that the drain can be safely removed in appropriate patients after the fistula tract has matured.
Methods: In patients with fistula, drain flow was monitored until the fistula tract developed. In general, we waited until the fifteenth day for safety to ensure that the fistula tract matured. The drain was removed unchanged and unshortened all at once. The patients were followed up with clinical and imaging methods in the next days, weeks, and months.
Results: We had a total of 15 patients with fistula. The mean age of the patients was 44.6 (10-81) years. 9 of the 15 patients were male and 6 were female (60%, 40%). Eleven patients developed pancreaticobiliary fistulas, one had a tracheoesophageal fistula, and three had chylous fistulas.
Conclusions: In the 15 patients we presented, drains were a mechanical obstacle to the closure of fistulas. After the drain removed patients stasis,leakage or spread did not occur. We think that our experience based on a limited number of patients will bring our thesis that the drain itself prevents fistula closure in some patients to the literature.