bluuebunny/crossref_metadata_2025_split huggingface dataset:
RISK OF RENEWABLE ENERGY SOURCES DEVELOPMENT IN THE OIL AND GAS INDUSTRY IN THE CONTEXT OF COVID-19
Authors: Babicheva L. K. , Neprintseva E. V. , Shubin S. A. 
Published: May 2021

The global climate problem of climate warming has led to the active development of renewable energy almost all over the world. Many European countries and international corporations are already striving for carbon neutrality.This article analyzes the current trends in the development of the renewable energy sources industry in the world and in Russia, assesses the applicability of renewable energy sources in the oil and gas industry and the impact of the coronavirus crisis on the perspectives for renewable energy. The analysis of the indicators of the volumes of commissioning of generating capacities for 2020 is given, the obstacles encountered in the development of the industry due to the unstable global situation are considered.The article also discusses investment in renewable energy by oil and gas companies and their transformation under the influence of the renewable energy sector, as well as the participation of Russian companies in this transformation and their long-term prospects in relation to renewable energy.
Capacitação Profissional na Geração de Resíduos Sólidos de Serviço de Saúde em Ambiente Hospitalar
Authors: Monteiro de Brito Huama , Dias de Souza Marcelo , Paz da Costa Patrícia , Lataliza de Menezes Géssica , Machado Coelho Flavia , Karoline de Almeida Santiago Bruna 
Published: May 2021

O trabalho teve como objetivo analisar a geração de resíduos comuns do Hospital São Luiz de Cáceres do Estado de Mato Grosso, em relação à capacitação dos funcionários no local de trabalho. Trata-se de estudo de intervenção, analítico, experimental de resíduos de serviços de saúde. A realização da capacitação foi no ano de 2017, em que foram abordados cinco pontos de geração no hospital, tendo como prioridade a quantidade de resíduos gerados em cada ponto, sendo quantificados e analisados antes e após a capacitação profissional dos colaboradores. Os resultados demonstraram que os resíduos comuns gerados no local estão sendo descartados de forma incorreta, pois foram observados resíduos da classe A nas lixeiras de classe D, sendo que mesmo com a capacitação, a segregação ainda continuou sendo realizada de forma incorreta por alguns profissionais. Portanto, em função de danos financeiros e ambientais, pode-se dizer que é de suma importância que os profissionais sejam capacitados por uma pessoa qualificada. É necessária uma pessoa capacitada para se responsabilizar pelo PGRSS, SCIH e gestores, aplicando treinamento de capacitação e monitorando diretamente o manejo dos resíduos sólidos gerados no ambiente hospitalar.

Palavras-chave: Lixo Hospitalar. Segregação. Gerenciamento de Resíduos.

Abstract
The work aimed to analyze the common residues generation of Hospital São Luiz de Cáceres of the state of Mato Grosso, in relation to the employees training in the workplace. This is an intervention, analytical and experimental study of health services residues. The training was carried out in 2017, in which five generation points were added, having as priority the amount of residues generated in each point, being quantified and advanced and after the professional employees training. The results showed that the common residues generated at the site is being disposed of incorrectly, because class A residues were observed in class D dumps, being that even with the training, the segregation still continued to be performed incorrectly by some professionals. Therefore, due to the financial and environmental damage, it can be said that it is extremely important that professionals are trained by a qualified person. A trained person is required to be responsible for the PGRSS, SCIH and managers, applying training and monitoring directly the solid residues management in the hospital environment.

Keywords: Hospital Garbage. Segregation. Residues Management.
New process to obtain unslaked lime through microwave hybrid heating and its fluid dynamics computational modeling
Authors: Corrêa Breno Henrique Booz Carvalho , Bosch Neto Juan Canellas , França Alexandre Bôscaro , Cordeiro Ana Clara Cassin 
Published: May 2021

This study aimed to analyze the advantages of limestone calcination through a conventional microwave heating technique. For such a purpose, the microwave was merged by hybrid heating and a refractory ceramic internally coated with copper oxide was used with a conventional muffle furnace. It has also been analyzed the behavior of calcining limestone with different masses and variations in retention time using a muffle furnace and microwaves, both with and without using the refractory ceramic. Afterwards, the process has been modeled so as to analyze temperature versus retention time. As a result, calcination using a microwave susceptor with the refractory ceramic substance proved to be a process that takes 35% less time than conventional methods. Furthermore, there has been a reduction in 66.1% of energy expenditure. It was also observed that the new procedure offers advantages in reduced greenhouse gases emissions on account of the release of only a single substance, ease of air treatment in industrial environments and being a more economically viable process for limestone calcination, which can be further utilized by companies belonging to such a sector. Its patent deposit number BR 202018073002-4 U2 in INPI.
An Improved Multicomponent Diffusion Model for Compositional Simulation of Fractured Unconventional Reservoirs
Authors: Tian Ye , Zhang Chi , Lei Zhengdong , Yin Xiaolong , Kazemi Hossein , Wu Yu-Shu 
Published: May 2021

Summary
Most simulators currently use the advection/diffusion model (ADM), where the total flux comprises Darcian advection and Fickian diffusion. However, significant errors can arise, especially for modeling diffusion processes in fractured unconventional reservoirs, if diffusion is modeled by the conventional Fick’s law using molar concentration. Hence, we propose an improved multicomponent diffusion model for fractured reservoirs to better quantify the multiphase multicomponent transport across the fracture/matrix interface.
We first give a modified formulation of the Maxwell-Stefan (MS) equation to model the multicomponent diffusion driven by the chemical potential gradients. A physics-based modification is proposed for the ADM in fractured reservoirs, where fracture, matrix, and their interface are represented by three different yet interconnected flow domains to honor the flux continuity at the fracture/matrix interface. The added interface using a more representative fluid saturation and composition of the interface can hence better capture the transient mass fluxes between fracture and matrix. The proposed approach is also implemented in an in-house compositional simulator. The multicomponent diffusion model is validated with both intraphase and interphase diffusion experiments. Then, the improved model for fracture/matrix interaction is compared with a fine-grid model. The proposed multiple interacting continua (MINC) model with three continua (MINC3) can better match the fine-grid model’s result than the double-porosity (DP) model, which only obtains a fair match at an early time.
Then, we simulate a gas huff ‘n’ puff (HnP) well in the Permian Basin to investigate the effect of diffusion within the fractured tight oil reservoir. The simulation reveals that diffusion has a minor effect on the performance of depletion when oil is the dominant phase. For gas HnP, the simulation neglecting diffusion will underestimate the oil recovery factor (RF) but overestimate the gas rate. The DP approach tends to overestimate the RF of heavy components but leads to a similar cumulative oil RF compared with MINC3. With the diffusion included in the simulation, gas HnP performance becomes more sensitive to the soaking time than the model without diffusion. Although increasing the soaking time will lead to a higher RF after considering diffusion, the incremental oil is not sufficiently large to justify a prolonged soaking time.
Longitudinal Associations Between TPO Gene Variants and TPOAb Seroconversion In A Population Based Study: Tehran Thyroid Study (TTS)
Authors: Ghanooni Amir Hossein , Zadeh-Vakili Azita , Rezvankhah Boshra , Nodushan Somayeh Jafari , Akbarzadeh Mahdi , Amouzegar Atieh , Daneshpoor Maryam Sadat , Khalili Davood , Mehrabi Yadollah , Sarvghadi Farzaneh , Ebadi Seyed Alireza , Azizi Fereidoun 
Published: May 2021

Abstract
Background: Autoimmune thyroid diseases (AITD) are among the most common autoimmune diseases in the world. They are usually accompanied by the presence of anti-thyroid antibodies as the early predictive marker. Genetic determinants of the susceptibility to develop thyroid antibodies are still poorly understood. This study aimed to investigate the relation between thyroid peroxidase (TPO) gene variants (53 SNPs) and positive TPOAb and also to evaluate the effect of some environmental factors on changes from negative to positive TPOAb (Seroconversion). Methods: Participants from the Tehran Thyroid Study (TTS) in phases 1 and 2 (N=5317, ≥ 20 years) were evaluated for the positive TPOAb and its relationship with 53 SNPs from TPO gene (a cross-sectional approach). At the second stage of the study (a longitudinal approach), negative TPOAb participants (control group, N= 4815) were followed up for about 5.5 (5.54±1.62) years until they have had positive results for TPOAb (“TPOAb seroconversion”). The association between TPO gene polymorphisms and TPOAb seroconversion was evaluated using logistic regression analysis and SKAT (sequence kernel association test) package. Results: In cross-sectional analyses, 17 SNPs were associated with TPOAb positivity (521 positive TPOAb participants) after the adjustment for age, sex, body mass index (BMI), smoking, the number of parity and oral contraceptive consumption (P <0.05). In longitudinal analyses, there was an association between TPOAb seroconversion and four SNPs before, and three SNPs after adjustment (P <0.05). Conclusions: TPOAb seroconversion could be affected by some thyroid peroxidase gene variants.
The Mediating Role of E-Health Literacy in the Relationship Between Coronavirus Awareness and Hope in the Covid-19
Authors: Gunlu Aykut 
Published: May 2021

Abstract
This research aims to determine the mediating role of e-health literacy levels on the relationship between awareness of coronavirus precautions for Covid-19 and dispositional hope during the Covid-19 era. The current research is based on sequential explanatory design. The quantitative data in this research were collected online Google form, and the qualitative data were collected using the online interview technique. Participants from whom qualitative data were obtained were determined using the analog sampling method, one of the criterion sampling method. Participants from whom the quantitative data of the study were obtained were determined using the snowball sampling method, one of the purposeful sampling methods. As a result of testing the structural equation model, it has been determined that e-health literacy has a full mediating role between awareness of koronavirus and dispositional hope. In addition, in the study, it was observed that people who had Covid-19 increased their awareness of Covid-19 before and after the disease. It has been determined that people pay more attention to the precautions that should be taken for the transmission of the disease, especially after the disease. As a result, it can be said that the necessity of raising the awareness of individuals and giving priority to increasing the level of e-health literacy has emerged.
Industry 4.0 Maturity Follow Up Inside an Internal Value Chain: A Case Study
Authors: Alcácer Vítor , Rodrigues João , Carvalho Helena , Machado Virgílio 
Published: May 2021

Abstract
Social, economic, and technological recent developments leading companies to face new production challenges. Companies will need physical and virtual structures allowing cooperation and quick adaptation along all value chain. To this matter, one of the main foundations of industry 4.0 is the use of information and communication technologies systems. Many companies are using information and communication systems without integration with business partners and even also with internal departments. This gap needs to be analyzed and it can be made by measuring the status of the industry 4.0 enabling technologies adoption inside a company using maturity or readiness models transmitting knowledge and pathing initiatives to help on progress and monitorization, looking forward to the future status of the internal value chain. On a qualitative and quantitative matter, this study presents the industry 4.0 enabling technologies readiness level of three departments of an automotive company internal value chain. This case study shows different readiness level on each department and limitations to reach better levels such as potential results if the benefits of industry 4.0 enabling technologies were reach on a company that assumes to be aligned with the industry 4.0 strategy.
Doubly resonant sub-ppt photoacoustic gas detection with eight decades dynamic range
Authors: Wang Zhen , Zhang Hui , Wang Qiang , Borri Simone , Galli Iacopo , De Natale Paolo , Ren Wei 
Published: May 2021

Abstract
Gas sensors with high sensitivity, wide dynamic range, high selectivity, fast response, and small footprint are desirable across a broad range of applications in energy, environment, safety, and public health. However, designing a compact gas sensor with ultra-high sensitivity and ultra-wide dynamic range remains a challenge. Laser-based photoacoustic spectroscopy (PAS) is a promising candidate to fill this gap. Herein, we report a novel method to simultaneously enhance the acoustic and light waves for PAS using integrated optical and acoustic resonators. This increases sensitivity by more than two orders of magnitude and extends the dynamic range by more than three orders of magnitude, compared with the state-of-the-art photoacoustic gas sensors. We demonstrate the concept by exploiting a near-infrared absorption line of acetylene (C2H2) at 1531.59 nm, achieving a detection limit of 0.5 parts-per-trillion (ppt), a noise equivalent absorption (NEA) of 5.7×10-13 cm-1 and a linear dynamic range of eight orders of magnitude. This study enables the realization of compact ultra-sensitive and ultra-wide-dynamic-range gas sensors in a number of different fields.
Synthesis and Characterization of Superabsorbent Hydrogels From Waste Bovine Hair Via Keratin Grafted With Acrylic Acid (AA) and Acrylamide (AAm)
Authors: Demir Aysegul Uzuner , Arican Fatih , Sancakli Aykut , Ismar Ezgi 
Published: May 2021

Abstract
The leather industry, due to its way of using chemicals during treatment and releasing them back to the environment makes it one of the hazardous sectors. It is not only releasing the chemicals also during the process precious biomass such as collagen and keratin discarded as waste. In this study, bovine hair which occurs during the treatments of the bovine leather process is supplied as waste and converted to superabsorbent hydrogel via grafting of keratin with monomers (Acrylic Acid (AA), Acrylamide (AAm)) in the presence of N, N'-methylene bisacrylamide (NMBA) used as a crosslinking agent and ammonium persulfate (APS) as an initiator. Keratin is selected to enhance the biocompatibility of the hydrogel. Thus, different keratin/monomer ratios, crosslinking agents, and initiator amounts were accepted as variables, and reaction conditions were optimized to achieve the highest swelling capacity. Synthesized hydrogels were chemically, morphologically, and thermally characterized via Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), differential scanning calorimeter (DSC), and thermal gravimetric analyzer (TGA). FTIR, DSC, and TGA results confirmed the grafted structure. The maximum swelling ratio was recorded at pH 9, at the end of 48 hours as 1791%. Sponge-like hydrogels were successfully obtained, and waste keratin is successfully valorized by means of hydrogels which can be used in high-value-added areas.
Analysis the Effect of Dynamic Clustering and Lightweight Symmetric Encryption Approaches on Network Lifetime in WSNs
Authors: Abu-Ain Tarik , AHMAD RAMI , Sundararajan Elankovan A 
Published: May 2021

Abstract
Energy consumption and security efficiency are still main challenges in Wireless Sensor Networks (WSNs) due to their hardware resource-constrained nature. The 6LoWPAN protocol was developed to improve WSNs communication, security, and node management optimization. Hence the protocol energy efficiency and security can be improved. In this paper, we address the WSN nodes’ power consumption by analyzing the Dynamic Cluster Head (DynCH) technique, which automates the process of selecting WSN Cluster Head (CH) nodes based on the WSN nodes’ energy and nodes’ distances among each other in mobile WSN nodes. Moreover, this analysis covers the complexity of DynCH in different environments to prove its efficiency compared to the steady CH mechanism. In addition, we present the performance analysis of different lightweight systematic block encryption algorithms along with DynCH scheme on WSNs lifetime. In particular, Speck128, FlexenTech, Tiny Encryption Algorithm (TEA), and Advanced Encryption Standard (AES) algorithms are used in order to determine the amount of energy consumed by the sensor nodes and their effect on the network lifetime. Furthermore, the lightweight key management mechanism is used to secure the data and keys exchange between WSN nodes in all different systematic encryption algorithms. The Cooja simulator with Contiki operating system are used to evaluate our analysis. Finally, the outcome of the analysis has showed that DynCH improves the wireless network lifetime by 45% compared to the steady clustering approach. Moreover, the analysis also shows that, Speck128 consumed 26%, FlexenTech consumed 52%, TEA consumed 65%, and AES consumed 78% of wireless network lifetime compared to unsecure wireless networks communication, respectively.
Research and Application of Directional Roof Cutting and Pressure Releasing Technology for Retracement Channel of 3314 Working Face in Hexi Coal Mine
Authors: Cao Jindong , Yang Xiaojie , Huang Ruifeng , Fu Qiang , Gao Yubing 
Published: May 2021

Abstract
The high stress of the surrounding rock of Hexi Coal Mine easily leads to severe deformation of the retracement channel and the appearance of the mine pressure during the retreat severely affects the stability of the roadway. In order to solve the above problems, a roadway surrounding rock control technology is proposed and tested. The bidirectional energy-concentrated tensile blasting technology is used to perform directional cutting to cut off the stress propagation path. Firstly, the deformation mechanism of the roof is analyzed by establishing the deformation mechanical model of the roof of the retracement channel. Then, according to the geological conditions of working face 3314 and theoretical calculation, the key parameters of roof cutting and pressure releasing of retracement channel are determined, and through the numerical analysis of its cutting effect, the length of cutting seam is 11.5m, and the cutting angle is 10°. Finally, a field test is carried out on the retracement channel of 3314 working face to verify the effect of roof cutting. The results show that the deformation of the retracement channel and the main roadway is very small. In the process of connecting the working face and the retracement channel, the maximum roof to floor convergence is 141mm, and the two sides convergence is 79mm. After the hydraulic support was retracted, the maximum roof to floor convergence of the surrounding rock is 37 mm, and the two sides convergence is 33mm. The roof cutting and pressure releasing of the retracement channel ensures the safe evacuation of the equipment and the stability of the main roadway. The cutting effect is obvious for the release of pressure, which is of great significance to engineering practice.
Correlation between Ki-67 proliferation index in invasive breast cancer and molecular signatures: EndoPredict and MammaPrint
Authors: Amezcua-Gálvez J. Eduardo , Lopez-Garcia Carlos A. , Cynthia Villarreal-Garza , Victor Lopez-Rivera , Mauricio Canavati-Marcos , Sandra Santuario-Facio , Antonio Dono , Monroig Paloma del C. , Ortiz-Lopez Rocio , Gomez-Macias Gabriela Sofia 
Published: May 2021

Abstract
Background: The need to identify patients with hormone receptor-positive (HR+) early invasive breast cancer (EIBC) who could benefit from adjuvant chemotherapy has been enhanced with the development of molecular signature tests. However, due to their high cost and limited availability alternative low-cost prognostic and predictive tests are used in clinical practice. Here, we sought to evaluate the performance of the proliferation marker Ki-67 to identify these patients and explore its association with molecular signatures and risk stratification markers. Methods: From our prospectively maintained multicenter breast cancer registry, we identified EIBC HR+ patients tested with EndoPredict or MammaPrint and Ki-67 as part of their routine workup. Patients were categorized into two groups: Group 1 (2016-2018) was evaluated using EndoPredict and Group 2 (2011 to 2018) with MammaPrint. A ≥20% Ki67 cutoff was utilized for identify high proliferative EIBC and a receiver-operative curve area under the curve (AUC) and kappa concordance were utilized to evaluate the performance of Ki-67 compared to molecular signature tests. Results: In the EndoPredict group, 54/96 patients were considered high-risk by EPclin. 57/96 patients had a Ki-67 ≥20%. However, there was no significant overall concordance between them (59.37%, κ = 0.168, p=0.09). In the MammaPrint group, 21/70 patients were considered high-risk. Ki67 ≥20% was present in 36 patients with a significant overall concordance (67.14%, κ 0.35, p<0.001). Additionally, Ki-67 was associated with the Nottingham histological grade (NHG) in both groups. Conclusion: There is a fair concordance between Ki-67 and MammaPrint risk stratification of HR + EIBC and no concordance with EndoPredict molecular signature. Cost-effectiveness analysis of these tests in developing countries are needed, until then, the use of Ki-67 seems reasonable to aid clinical decision.