bluuebunny/crossref_metadata_2025_split huggingface dataset:
DETERMINATION OF THE MECHANISM OF INTERACTION OF Cu2 +, Pb2 + METHOD OF FTIR SPECTROSCOPY IN THE MIDDLE REGION
Authors: Rudneva K. 
Published: December 2022

The object of the study is to determine the interaction of copper and lead ions in aqueous weakly acidic solutions. According to the analysis of modern scientific works, recently not enough attention is paid to the study of sorption properties of humates after regeneration, so for further use of humic acids as sorbents, including regenerated, it is important to obtain data on stoichiometric interaction of humic acids with various metals. In this work, humic acids were isolated from commercial potassium humate produced in China. Model solutions of copper (II) sulfate and lead (II) acetate were used in the research. The exact content of copper and lead for the final solutions prepared from model with subsequent regeneration of humate-metal complexes was determined by inductively coupled plasma atomic emission spectroscopy (ICP-AES). Regeneration was carried out by reducing the acidity by adding 1 n nitric acid. The spectra were recorded by FTIR spectroscopy in the middle region. Interpretation of the spectra of the starting humic acids, potassium humates, as well as copper and lead humates was carried out by adjusting the literature data.
Studies of the structure of humic acids and humates of metals and by this method have shown the active involvement of carboxyl groups in the formation of humate-metal bonds. Humic acids after regeneration (reduction) contain carboxyl groups in the dimerized state, in contrast to freshly prepared humic acids. In lead humates, the above general nature of changes in the spectral pattern from humic acids to lead humates is repeated for copper humates, which can be explained in the general theory of FTIR spectroscopy by increasing the reduced mass of a group of atoms involved in oscillations due to significantly higher atomic mass of pigs. compared to copper.
It was also found that sorption occurs as a result of stoichiometric reaction, due to which chelate complexes of copper and lead are formed by interaction with oxygen atoms in the carboxyl groups of humate molecules.
Petroleum++: Lessons Learned as SPE Moves Forward
Authors: Kamal Medhat M. 
Published: December 2022

For the first time since the 2018 SPE Annual Technical Conference and Exhibition (ATCE), the flagship technical conference was held in-person in the US. The COVID-19 pandemic forced us to meet virtually in 2020, and in 2021 we met in Dubai. It was exciting to start meeting our fellow SPE members in-person again. We had a successful ATCE with more than 5,500 members from 58 countries participating. The conference included the traditional technical program (the backbone of SPE meetings) and panel discussions that were highlighted by the opening general session where senior executives from operating oil and gas companies, service companies, and consulting firms shared their views about how to transform the industry for the future in a sustainable manner anchored by our traditional petroleum engineering activities.
Additional sessions included a special panel discussion designed to listen to the members’ ideas regarding the SPE Strategic Plan, which I will discuss later in this column. Along with the extensive technical program, the main feature of ATCE that included more than 400 peer-selected papers from more than 1,200 abstracts submitted to the program committee, ATCE featured expansive exhibits where more than 220 companies showed their services and products to the attending members. Maybe a photo from this year’s ATCE showing large number of members in the exhibition hall?
On the evening of the first day of the conference, alumni from various universities gathered at receptions to renew and start new friendships and discuss the future developments needed in petroleum engineering education at their universities. On Tuesday night, the Annual Reception and Awards Banquet honored members by presenting awards acknowledging the excellent contributions they made to our profession and in serving the members of the Society. On the last day of the conference, the President’s Luncheon and Annual Meeting of the Members was held where 2022 President Kamal Ben-Naceur discussed the state of the Society and passed the gavel to me to start the new year of SPE. Insert photo of passing the gavel? Feedback from members attending the conference was positive, and preparation for next year’s ATCE, which will be held in San Antonio, Texas, from 16–18 October, is underway. The Call for Papers is officially open at the 2023 ATCE site.
In 2022, several events took place that required a pause to think about their effect on our Society. It is time to close the chapter on these events, recognizing the lessons learned from them, and move forward with the main activities of SPE to provide members with the technical and professional support that allows us to provide the world with the energy it needs—safely, reliably, and in an environmentally friendly and affordable manner.
High-Temperature Water-Based Drilling Fluid Accesses Depleted Deepwater Reserves
Authors: Carpenter Chris 
Published: December 2022

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This article, written by JPT Technology Editor Chris Carpenter, contains highlights of paper SPE 207825, “First Use of Novel High-Temperature Water-Based Reservoir Drilling Fluid To Access Depleted Deepwater Reserves,” by Alexandra C. Morrison, Conan King, SPE, and Kevin Rodrigue, Halliburton. The paper has not been peer reviewed.

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A combination of divalent base brine and high wellbore temperature presents significant challenges for high-density aqueous reservoir drilling fluids. Such systems traditionally use biopolymers as viscosifiers; however, they are subject to degradation at elevated temperatures. Nonaqueous drilling fluids are thermally stable, but complete removal of the filter cake is challenging, which can lead to formation damage. The complete paper describes the qualification and first deepwater drilling application of an aqueous reservoir drilling fluid at temperatures greater than 320°F.

Introduction
The laboratory development and scale-up yard trials of the high-temperature divalent brine-based reservoir drilling fluid (HT-RDF) and solids-free screen running fluid (SF-SRF) systems used for this well took several years. Specific rheology and fluid-loss targets were set and met during the design phase, and, in conjunction with hydraulic modeling, software simulations demonstrated that equivalent circulating densities (ECDs) would be acceptable based on well-construction plans. The HT-RDF showed excellent thermal stability in static age tests, which was crucial because of the plans for openhole logging of the production zone once total depth was reached. Screen plugging was identified early in the project as a key risk; the most-suitable mitigation for this was to engineer a completely solids-free fluid in which to install the sand screens. The resulting SF-SRF was designed to provide fluid-loss control and wellbore stability in case filter cake was stripped from the formation face during the screen run. Finally, given the focus on production maximization, the fluids underwent rigorous formation-damage tests, ultimately showing that a return permeability of greater than 60% was possible with the inclusion of an acid breaker to assist filter-cake dissolution.
Dynamic Control of Hybrid Grafted Perfect Vector Vortex Beams
Authors: Ahmed Hammad , Ansari Muhammad Afnan , Li Yan , Zentgraf Thomas , Mehmood Muhammad Qasim , Chen Xianzhong 
Published: December 2022

Abstract
Perfect vector vortex beams (PVVBs) with inhomogeneous polarization and spiral phase profiles have attracted considerable interest due to their peculiar optical features. PVVBs are typically generated through the superposition of perfect vortex beams, which suffer from the limited number of topological charges (TCs) in the involved vortex beams. To meet the requirement of time-varying systems, dynamic control of PVVBs is desirable and hasn’t been demonstrated. A grafted perfect vortex beam (GPVB) is an artificially engineered vortex beam with multiple TCs that are impossible with a conventional vortex beam. Here, for the first time, we propose and experimentally demonstrate hybrid grafted perfect vector vortex beams (GPVVBs) and the dynamic control of these beams. Hybrid GPVVBs are generated through the superposition of new hybrid GPVBs with a novel multifunctional metasurface. The generated hybrid GPVVBs possess spatially variant rates of polarization change in 2D space due to the involvement of more TCs. Remarkably, each hybrid GPVVB features multiple different GPVVBs in the same beam, adding more design flexibility. Furthermore, these beams are dynamically tuned with a rotating half waveplate, making the metasurface function as a dynamic optical device. The generated dynamic GPVVBs may find applications in the fields where dynamic control is in high demand, including optical encryption, dense data communication, and multiple particle manipulation.
Computational Intelligence in Hernia Surgery with Classification of Repair Types
Authors: Charvatova Hana , East Barbora , Prochazka Ales 
Published: December 2022

Abstract
Problems of the ventral hernia are very common and their evaluation by computational methods can help with the selection of the most appropriate treatment. This study collected data from the records of the set of more than 2800 patients from different European countries observed during last 11 years (2012-2022) and were collected by specialists in hernia surgery. The majority of patients were treated by the standard surgery approach, with the increasing trend towards robotic surgery. This paper is devoted to a statistical evaluation of the treatment method related to the age of the patients, their body mass index (BMI), and the type of repair. Appropriate mathematical methods are used to extract and classify the selected features.The proposed methodology focuses on computational and machine learning methods. Mesh hernia surgery is classified into two classes: groin hernia repairs (GHR) and primary ventral, incisional ventral and parastomal hernia repairs (PVHR, IVHR and PHR).This paper presents statistics of surgery hernia treatments related to the age of patients and repair technologies with different kinds of meshes. The main conclusions point to classification of repair technologies related to the BMI and the age of the patients. Separation accuracy of GHR surgery from other types of repairs reached 69.2 % and 70 % for the Bayesian and SVM methods, respectively. The proposed methodology suggests a very close interdisciplinary approach and the use of computational intelligence in hernia surgery, with its possible use in the clinical environment.
Game theory model of corporate governance: Fitting real market environment
Authors: Zhu Yunxuan 
Published: December 2022

Abstract
In this paper, we use two game models to fit the market subject behavior in corporate governance from dynamic dimension and static dimension, respectively. By further expanding the main governance subjects and adding variables with practical significance, such as "bribery" and "social welfare", into the game theory model, some conclusions with practical significance are found in this paper. For example, the factors such as the possibility to check out manager's violation, the punishment to the irregularities, the supervision cost of the supervisory board, have an important impact on the behavior of the corporate governance. In the static game model, this paper finds that intersubjective games and restrictions avoid “the worst result” to occur. Besides, social welfare even can be improved under certain conditions. In the multi-coexistence game model, the equilibrium point of the static game model is uncertain, which makes the social welfare situation uncertain. The conclusions of the two game models can be used for reference to further improve the corporate governance mechanism.
JEL classification: G30; M10; D21; D81
Padovan numbers which are concatenations of three repdigits
Authors: Bhoi Kisan , Ray Prasanta Kumar 
Published: December 2022

Abstract
Padovan sequence is a ternary recurrent sequence defined by the recurrence relation Pn+3 = Pn+1 + Pn with initial terms P0 = P1 = P2 = 1. In this study it is shown that 114, 151, 200, 265, 351, 465, 616, 816, 3329, 4410, 7739, 922111 are the only Padovan numbers which are concatenations of three repdigits.
2020 Mathematics Subject Classification: 11B39; 11J86; 11D61.
Longitudinal investigation of changes in resting-state co-activation patterns and their predictive ability in the zQ175 DN mouse model of Huntington’s disease
Authors: Adhikari Mohit H , Vasilkovska Tamara , Cachope Roger , Tang Haiying , Liu Longbin , Keliris Georgios A , Sanjuan Ignacio Munoz , Pustina Dorian , Linden Annemie Van der , Verhoye Marleen 
Published: December 2022

Abstract

Huntington’s disease (HD) is a neurodegenerative disorder caused by expanded (≥ 40) glutamine-encoding CAG repeats in the huntingtin gene, which leads to dysfunction and death of predominantly striatal and cortical neurons. While the genetic profile and clinical signs and symptoms of the disease are better known, changes in the functional architecture of the brain, especially before the clinical expression becomes apparent, are not fully and consistently characterized. In this study, we sought to uncover functional changes in the brain in the heterozygous (HET) zQ175 delta-neo (DN) mouse model at 3, 6, and 10 months of age, using resting-state functional magnetic resonance imaging (RS-fMRI). This mouse model shows molecular, cellular and circuitry alterations that worsen through age. Motor function disturbances are manifested in this model at 6 and 10 months of age. Specifically, we investigated, longitudinally, changes in co-activation patterns (CAPs) that are the transient states of brain activity constituting the resting-state networks (RSNs). Most robust changes in the temporal properties of CAPs occurred at the 10-month time point; the durations of two anti-correlated CAPs, characterized by simultaneous co-activation of default-mode like network (DMLN) and co-deactivation of lateral-cortical network (LCN) and vice-versa, were reduced in the zQ175 DN HET animals compared to the wild-type mice. Changes in the spatial properties, measured in terms of activation levels of different brain regions, during CAPs were found at all three ages and became progressively more pronounced at 6-, and 10 months of age. We then assessed the cross-validated predictive power of CAP metrics to distinguish HET animals from controls. Spatial properties of CAPs performed significantly better than the chance level at all three ages with 80% classification accuracy at 6 and 10 months of age.
A Performance Comparison of Heterostructure Surface Plasmon Resonance Biosensor for the Diagnosis of Novel Coronavirus SARS-CoV-2
Authors: Akib Tarik Bin Abdul , Mostufa Shahriar , Rana Md. Masud , HOSSAIN MD BIPLOB , Islam Md. Rabiul 
Published: December 2022

Abstract
This paper presents a performance comparison of heterostructure surface plasmon resonance (SPR) biosensors for the application of Novel Coronavirus SARS-CoV-2 diagnosis. The comparison is performed and compared with the existing literature based on the performance parameters in terms of several prisms such as BaF2, BK7, CaF2, CsF, SF6, and SiO2, several adhesion layers such as TiO2, Chromium, plasmonic metals such as Ag, Au, and two-dimensional (2D) transition metal dichalcogenides (TMDs) materials such as BP, Graphene, PtSe2 MoS2, MoSe2, WS2, WSe2. To study the performance of the heterostructure SPR sensor, the transfer matrix method (TMM) is applied, and to analyses, the electric field intensity (EFI) near the graphene-sensing layer contact, the finite-difference time-domain (FDTD) approach is utilized. Numerical results show that the heterostructure comprised of CaF2/TiO2/Ag/BP/Graphene/Sensing-layer has the best sensitivity and detection accuracy. The proposed sensor has an angle shift sensitivity of 390°/refractive index unit (RIU). Furthermore, the sensor achieved a detection accuracy (DA) of 0.464, a quality factor (QF) of 92.86/RIU, a figure of merit (FOM) of 87.95, and a combined sensitive factor (CSF) of 85.28. Furthermore, varied concentrations (0nM to 1000nM) of biomolecule binding interactions between ligands and analytes have been observed for the prospects of diagnosis of the SARS-CoV-2 virus. Results demonstrate that the proposed sensor is well suited for real-time and label-free detection particularly SARS-CoV-2 virus detection.
Investigating the Safety of Patients with Preoperative Tachycardia and Hypertension Undergoing Sleeve Gastrectomy
Authors: Widjaja Jason , Wang Rui , Dong Wenpei , Yang Dongchao , Song Zhicheng , Gu Yan , Yang Jianjun 
Published: December 2022

Abstract
Background: Studies have suggested that elevated postoperative heart rate was associated with bleeding following bariatric surgery. Therefore, we questioned whether patients with preoperative elevated heart rate are more prone to postoperative bleeding following sleeve gastrectomy (SG) than those with normal heart rate.
Methods: Patients who underwent laparoscopic SG between January 2020 and January 2022 at our hospital were included. The primary parameters for this analysis were the patients’ age, gender, weight, body mass index (BMI), preoperative and postoperative day-1 heart rate and blood pressure, drainage placement and volume, incidence of postoperative complications.
Results: Two hundred and fifty-two SG patients were included in this study (elevated heart rate, EHR n=54 vs. normal heart rate, NHR n=198). Postoperatively, the EHR group had significantly higher heart rate, incidence of drainage placement, and postoperative length of stay than the NHR groups(p<0.05). We further analyzed the hypertensive patients (HT) with and without preoperative elevated heart rate (HT with EHR, n=30 vs. HT without EHR, n=60). Postoperatively, the HT with EHR group had significantly higher heart rate and incidence of drainage placement than the HT without EHR group (p<0.05). No incidence of postoperative bleeding was observed in all the groups.
Conclusion: Our study found that patients with preoperative elevated heart rate have increased risk for the need of drainage placement intraoperatively, however, did not result in the increased incidence for postoperative complications. Further studies will be needed to understand better the safety of performing bariatric surgery in patients with elevated heart rate.
Design of intelligent traffic load balancing (ITLB) mechanism for software defined data center (SDDC)
Authors: Balakiruthiga B , Deepalakshmi P 
Published: December 2022

Abstract
The reinforcement learning strategy is adopted for software defined data centers, since it involves software agents to accomplish decision making through continuous learning of environment during drastic traffic. In this research work, we are proposing an intelligent routing algorithm by considering controller capacity and link capacity as the routing metrics. In addition, our approach takes care of migrating switches whenever a controller is over utilized. Distinct reinforcement learning agents are used to handle path computation and switch migration phase individually. Our key objective is to provide intelligent traffic load balancing approach in software defined data center using two distinct software agents. We observe that our proposed approach has achieved nearly 1.2 to 2.1 milliseconds of less latency, 2.5 milliseconds of less response time and low packet loss percentage around 1 to 2.5% and hence overall network throughput improvement is about attained 30 to 50% than other existing approaches through simulation.
Advantages of metagenomic next-generation sequencing in the management of ANCA- associated vasculitis patients with pulmonary infections
Authors: Wang Chen , Hu Zhan-Wei , Li Zhi-Ying , Zhao Ming-Hui , Chen Min 
Published: December 2022

Abstract
Background
Pulmonary infection is one of the leading causes of death in patients with ANCA-associated vasculitis (AAV). Fiberoptic bronchoscopy and bronchoalveolar lavage fluid (BALF) assays are useful diagnostic methods. In addition to conventional microbiological tests (CMTs), metagenomic next-generation sequencing (mNGS) facilitates rapid and sensitive detection of various pathogens. We aimed to evaluate the advantages of additional BALF mNGS in the management of pulmonary infections in AAV patients.
Methods
Fourteen patients with active AAV and/or suspected infection whose BALF samples were tested by mNGS (BALF mNGS group) and 14 AAV patients whose BALF were tested by CMTs only (CMTs group) were retrospectively included in the study. The results of microbiological tests and adjustments of treatment upon BALF mNGS were described. The durations of antimicrobial treatment, ventilation and ICU stay as well as in-hospital mortality in patients were compared between the BALF mNGS group and the CMT group.
Results
A total of 64.3% (9/14) of patients in the BALF mNGS group had polymicrobial infections, including bacterium, fungus and virus. Patients in the BALF mNGS group received significantly shorter antibacterial treatment than those in the CMT group. Patients in the early BALF mNGS group (symptomatic infection duration before bronchoscopies < 5 days) received significantly shorter antibacterial and total antimicrobial treatments than those in the early CMT group. Patients with pulmonary infections in the BALF mNGS group received significantly shorter ventilation treatment than those in the CMT group. No deaths occurred in the early BALF mNGS group.
Conclusions
Compared with CMT alone, additional mNGS tests may shorten the duration of antimicrobial treatment and ventilation. mNGS might be further pursued as a routine approach for the management of active AAV patients with suspected pulmonary infections.
Studies on sorption properties of ordered mesoporous silica MCM- 41 and SBA-15 toward non-polar α-tocopherol. Part 1. Kinetics of sorption
Authors: Karpov Sergey , Inshakova Viktoria V. , Khludneva Alina S. , Selemenev Vladimir F. , Roessner Frank 
Published: December 2022

Abstract

The sorption kinetics of α-tocopherol (TP) was studied on nanostructured silica materials such as MCM-41 and SBA-15. A significant influence of the pore size on the type of kinetics was noted. In case of MCM-41 (pore size 2.7-3.0 nm), the pseudo-second-order model has the best correlation with the kinetic data. The kinetic coefficients are 1-1.5 orders of magnitude higher than those for SBA-15 (pore size 6.0-6.5 nm). Consequently, the sorption equilibrium is established much faster.
For the description of the adsorption behavior of TP on SBA-15 intraparticle diffusion models were applied. In comparison with the Boyd and Weber-Morrison model, the Vermeulen approach describes the best fit with the experimental data. The filling of the large mesopores of SBA-15 results in a higher adsorption capacity of TP compared with MCM-41. It is noted, that increase of temperature in the range 273-318 K leads to decrease of the sorption capacity for both silicas. Raise of the temperature during sorption on MCM-41 results in the increase of the contribution of diffusion inside mesopores in comparison with surface diffusion.