bluuebunny/crossref_metadata_2025_split huggingface dataset:
A Visualization Study of Low-Tension Polymer Flooding for Viscous Oil Reservoirs
Authors: Guo Yujia , Song Haofeng , Mohanty Kishore 
Published: December 2022

Summary
Polymer flooding improves the sweep efficiency of viscous oil recovery over waterflooding. The low-tension polymer (LTP) flooding has the potential to improve the displacement efficiency due to low interfacial tension (IFT) without sacrificing sweep efficiency. Compared with ultralow tension (&lt;0.001 mN/m) alkaline-surfactant-polymer (ASP) floods, LTP flooding uses a low concentration surfactant to moderately reduce the IFT (&gt;0.01 mN/m). The objective of this research is to evaluate the performance of LTP floods as a function of IFT for a viscous oil in a 2D sandpack. Over 20 nonionic surfactants/cosolvents were tested. A series of sandpack flooding experiments were conducted in a custom-designed 2D visualization cell. The results show that short-hydrophobic surfactants 2EH-xPO-yEO can reduce the IFT to as low as 0.05 dyne/cm. Flooding experiments were performed in sandpacks with and without connate water saturation. The sandpack was water-wet for the experiments with connate water. For the experiments without connate water, the sandpack was oil-wet. A base-case secondary polymer flood (without any surfactant) with a viscosity ratio (µo/µp) of 10 showed a stable displacement and an oil recovery of 82% at the first pore volume injected (PVI). An LTP flood with an IFT of 0.1 dyne/cm also had a stable displacement front, but a higher oil recovery at 1 PVI [90% original oil in place (OOIP)]. Further reduction in IFT to 0.05 dyne/cm resulted in an unstable displacement and a lower recovery of 65% OOIP. For the experiments without connate water saturation, sandpack was oil-wet; the base-case polymer flood at a viscosity ratio of 10 showed severe fingering and a low oil recovery at 1 PVI (58% OOIP). Adding surfactants did not improve the oil recovery in oil-wet sandpacks.
Adaptive Modulation for Automotive OFDM to Joint Radar-Communications Systems.
Authors: Ammar Khaoula , BELKACEM Oussama BEL HAJ , BOUALLEGUE Ridha 
Published: December 2022

Abstract
The JRC systems have the advantage of joint waveform signals for both radar sensing and vehicular communication functionality on the same device. These systems allow the management of the dedicated radio resources more efficiently and reduce the hardware cost. To improve the performance and to guarantee the permanent availability of the dual functionality offered by this system, we propose to use one of the promising approaches in wireless vehicular networks is the adaptive modulation (AM) techniques for OFDM transmission. This paper proposed an optimal approach based on the predicted instantaneous SNR of the overall subcarriers to choose the modes to be used by the transmitter for its next OFDM frame. AM-OFDM transmission parameter adaptation is an action of the transmitter in response to time and frequency-varying channel conditions. We evaluate the performance of the joint OFDM scheme in terms of outage probability (OP) for the communications functionality and the Ambiguity Function (AF) for radar sensing. The obtained results based on MatLab simulations show that significant improvements in bit error rate (BER) and sensing detection can be accomplished, illustrating the superiority of the adaptive modulation schemes compared to fixed transmission schemes within the automotive scenario
Analysis of the Structure of Embodied Carbon Network in the International Trade of Countries and Regions along the Belt and Road: from the Regional and Sectoral Perspectives
Authors: Xie Huiqiang , Yang Dan , Zhang Kuan , Yang Lisha 
Published: December 2022

Abstract
Carbon flows embodied in the rapid trade development of countries and regions along the Belt and Road have evolved into a complex carbon flow network. Considering 63 countries and 26 sectors, the study uses the EORA Multi-Regional Input-Output (MRIO) model to construct the embodied carbon transfer networks in 1992, 1998, 2004, 2010 and 2016, respectively, and applies the social network approach to analyze the structural characteristics and evolution of carbon flow networks in countries and regions along the Belt and Road. The results show that, from the regional perspective, the net embodied carbon flow network of trade between countries is connected with an obvious core-periphery structure. The embodied carbon transfer network generally tends to expand over time. Moreover, the net carbon transfer network can be divided into four blocks, of which 13 countries, including China, India, Russia, Ukraine and Vietnam, are part of the main spillover block. From the sectoral perspective, the embodied carbon transfer network has generally tended to shrink. Industrial sectors such as electricity, gas and water act the role of "supplier" of embodied carbon in the industry, while service sectors such as education and health mainly play a part of "consumer". Moreover, six industries such as wood and paper industry constitute the main spillover block. Our findings can provide factual basis and policy implication for the coordinated control of carbon emissions in the "Belt and Road" initiative from both regional and sectoral perspectives.
Investigation of Millimeter Wave Propagation Characteristics at E-band for Future Multi-Gigabit Wireless Communications
Authors: Adula Segni Merga , Gebrestadik Atli Lemma 
Published: December 2022

Abstract
Millimeter waves hold strong promise for future multi-Giga wireless communication due to the large available bandwidth. Due to the short wavelength of millimeter waves traveling a short distance, experiencing severe multipath, leading to large delay spread and path loss. i.e. large inter-symbol interference. However, the wideband propagation characteristics of these E-bands are not well studied. Therefore, in this paper, we aim to investigate the propagation characteristics of millimeter waves in the outdoor market at E-Band. In our paper, the Intelligent Ray Tracing model is used to predict wideband parameters that affect the propagation of millimeter waves by considering the geometry of environments. In this research, the biggest marketplace in Africa, Merkato is considered as a case study. We have found out that the propagation is mainly due to direct path as well as single and two-times reflections and diffractions from building walls. In particular, we have observed that 73 GHz produces the best outcome for path loss and received power when compared with other frequencies. A good agreement is observed between the simulation, ABG, and CI path loss model.
Gateway based Multi-hop Enhanced Stable Election Protocol for WSN-based IoT
Authors: Abdelnapi Noha MM. , Omran Nahla F. , Mohamed Eman Mousa 
Published: December 2022

Abstract
Wireless Sensor Networks (WSNs) are an essential component in the Internet of Things (IoT)-based applications because they gather the sensed data from the IoT environment. WSNs consist of nodes that contain sensing units to detect required information. Each sensor has a limited amount of energy, but this energy is exhausted as transmission occurs. To reduce the transmission energy consumption between the sender and the receiver, a hybrid and multi-hop routing protocol known as Gateway-based Multi-hop Enhanced Stable Election Protocol (M-GESEP) for WSN-based IoT is proposed in this paper. The monitoring area is divided into regions in which the communication of sensor nodes with Base Station (BS) is hybrid ( i.e., some nodes communicate data directly while others use the clustering algorithm to send their data). The simulation result demonstrates that the proposed M-GESEP can improve the network lifetime by 45%, 35%, and 38% of the SEP, EDEEC, and ESEP protocols.
The Knowledge Mapping of Hiv/aids in Indonesians Living on Six Major Islands Using the Indonesian Version of the Hiv-kq-18 Instrument
Authors: Arifin Bustanul , Rokhman M. Rifqi , Zulkarnain Zulkarnain , Perwitasari Dyah Aryani , Manggau Marianti , Rauf Saidah , Noor Rasuane , Padmawati Retna Siwi , Massi Muhammad Narum , Schans Jurjen van der , Postma Maarten J. 
Published: December 2022

Abstract

Background: Indonesia's total number of HIV/AIDS cases is still high. Inadequate knowledge about the risk of HIV infection will influence HIV prevention and therapy. This study aimed to map the level of HIV-related knowledge among Indonesians living on six major islands in Indonesia and investigate the relationship between socio-demographic characteristics and HIV/AIDS knowledge.
Methods: This cross-sectional study used the Bahasa Indonesia version of the HIV Knowledge Questionnaire-18 items (HIV-KQ-18) Instrument. Data collection was done online through the Google form application.
Results: A total of 5,364 participants were recruited. The participants from Java had the highest degree of HIV/AIDS knowledge, which was 12.5% higher than participants from Sumatra, Kalimantan, Sulawesi, Papua, and Maluku. Linear regression showed that region, educational level, monthly expenditure, occupation, background in health sciences, and workshop attendance were significantly correlated with HIV knowledge. Participants typically understand that "HIV/AIDS transmission" only happens when sex partners are changed. Additionally, the government still needs improvement in HIV/AIDS education, particularly in the HIV incubation period, HIV transmission from pregnant women to the fetus, and condom use as one method of protection.
Conclusion: There are disparities in HIV/AIDS knowledge levels among the major islands of Indonesia. Based on these findings, the government's health promotion program to increase public awareness of HIV/AIDS must be implemented vigorously. Additionally, in line with our research findings, it is essential to broaden the scope of HIV/AIDS education and promotion materials.
Screening co-expressed target genes in rats and goats of blast lung injury through comparative transcriptomic analysis
Authors: Wang Hong , Gao Junhong , Fan Xiaolin , Lu Qing , Li Liang , Ma Ning , Wang Qi , Zhang Wenjuan 
Published: December 2022

AbstractBackground Blast lung injury (BLI) has been one of the most threat for human beings with the frequent occurrence of local wars, terrorist attacks and industrial explosions. The underlying mechanisms remains unclear. In this paper, transcriptome sequencing was performed in the lung tissues of the two species of goat and rat to identify the potential therapeutic targets involved in BLI. Results In this paper, the BLI models of rat and goat were successfully by validated HE-stain. Reddish edema fluid, erythrocyte, and even focal or patchy bleeding occurred in the alveolar cavity were visible under microscope. The genomic information of the two species was obtained by transcriptome sequencing. There were 83 DEGs co-expressed in rats and goats, among which 49 genes showed the same expression trend, including 38 up-regulated expression genes and 11 down-regulated expression genes. By the enrichment analysis, IL-17 signaling pathway and vascular smooth muscle contraction pathway are involved in BLI mechanism. The genes expressed in lung were screened for experimental verification, the main genes associated with BLI in both goat and rat are AGR2, ANKRD65, BPIFA1, BPIFB1 and KRT4. Conclusion In this study, the whole genomes of two species of BLI models were sequenced to dissect the basic characteristics of their genomes, laying the foundation for further investigation the mechanisms of BLI. By the genomic analysis, the expressed genes were involved in IL-17 signaling pathway and vascular smooth muscle contraction pathway associated with BLI. Finally, AGR2, ANKRD65, BPIFA1, BPIFB1 and KRT4 were highly expressed in both goat and rat BLI model, which could be used as potential target genes and may serve as biomarkers for the prognosis, diagnosis and therapy for BLI.
Climate resilience of European wine regions
Authors: Tscholl Simon , Candiago Sebastian , Marsoner Thomas , Fraga Helder , Giupponi Carlo , Vigl Lukas Egarter 
Published: December 2022

Abstract

Over centuries, European vintners have developed profound knowledge about grapes, environment, and techniques that yields the most distinguishable wines. In many regions, this knowledge is reflected in the system of wine geographical indications (GI), but climate change is challenging this historical union. Here, we present the first climate change vulnerability assessment of 1174 wine GIs across Europe and propose climate-resilient development pathways using an ensemble of biophysical and socioeconomic indicators. Results indicate that wine regions in Southern Europe are among the most vulnerable, with high levels also found in Eastern Europe. Vulnerability is driven by the rigidity of the GI system, which restricts the exploitation of suitable bioclimatic conditions and existing grape cultivar diversity, as well as contextual deficiencies, such as limited socioeconomic resources. Building a climate-resilient wine sector will require rethinking the GI system by allowing innovation to compensate for the negative effects of climate change.
Integrin α10β1-selected equine mesenchymal stem cells reduce lameness and joint degradation and increase immunomodulatory factors interleukin-10 and prostaglandin E2 in experimental post-traumatic osteoarthritis
Authors: Andersen Camilla , Jacobsen Stine , Uvebrant Kristina , IV John F Griffin , Walters Else Marie , Berg Lise Charlotte , Lundgren-Åkerlund Evy , Lindegaard Casper 
Published: December 2022

Abstract

Background Mesenchymal stem cells (MSCs) have gained much attention for their potential to treat osteoarthritis (OA). Integrin α10β1-selected equine MSCs (integrin α10-MSCs) have previously been shown to decrease cartilage degradation and bone sclerosis in an experimental equine post-traumatic osteoarthritis (OA) model, and recently we demonstrated that human integrin α10β1-selected MSCs were able to home to experimental cartilage defects in rabbit knees and directly participate in cartilage regeneration. The aim of this study was to further investigate disease modifying effects of integrin α10β1-selected MSCs with respect to joint function, cartilage health and immunomodulation in an experimental equine post-traumatic OA-model. Design In this non-randomized, partially blinded experimental case-control study, OA was induced using a carpal osteochondral fragment model in female horses. Eighteen days after surgery, eight horses received 2 x 107male integrin α10-MSCs intra-articularly and 9 were left untreated. Lameness, response to carpal flexion, carpal skin temperature and circumference was assessed weekly, along with synovial fluid analysis of inflammatory mediators. After euthanasia (70 days after OA induction), carpi were evaluated by computed tomography (CT) and magnetic resonance imaging (MRI), macroscopic pathology, and histology. The integrin α10-MSCs were traced by Y-chromosome PCR. Results Lameness, response to carpal flexion and carpal skin temperature were significantly improved over time after integrin α10-MSC treatment. The treated horses had significantly milder macroscopic cartilage pathology and lower cartilage histology scores compared to the untreated group. Prostaglandin E2 and interleukin-10 increased in the synovial fluid after integrin α10-MSC injection. MSCs were found in the synovial fluid of treated horses up to day 17 after treatment and in the articular cartilage and subchondral bone in five out of eight treated horses after euthanasia, 52 days after integrin α10-MSC treatment. The integrin α10-MSC injection did not cause any signs of joint flare. Conclusion This study demonstrates that intra-articular injection of integrin α10-MSCs is safe, alleviate pathological changes in the joint and improve joint function in an equine OA model. The results suggest that integrin α10-MSCs hold potential to be a disease modifying treatment of OA.
A multi-lead ECG monitoring combined with a programmed intracavitary ECG to complete LBBaP pacing: study protocol for a Single-center, prospective study
Authors: Wang Min , Sun Yaxun , sheng Xia , Zhang Jiefang , Ye Yang , Yang Ying , Fu Guosheng , Shan Yu 
Published: December 2022

Abstract
Background: Left bundle branch area pacing (LBBaP) has emerged as an alternative method for delivering physiological pacing to provide a near physiological ventricular activation. However, the clinical application and promotion of LBBaP is currently largely depended on the electrophysiological multichannel recorder to record the intracardiac electrogram (EGM). It is difficult for many primary hospitals lack of relevant equipment to carry out such operations.
Methods: We aim to recruit 100 patients of bradycardia with a pacemaker indication and nomal ejection fraction(EF>50%), using multi-lead surface electrocardiogram (ECM) monitoring and pacing system analyzer(PSA), combining with the nine-zone pacing method of the LBBaP, to complete LBBaP without an electrophysiological multichannel recorder, only based on the changes of paced QRS morphology on the multi-lead ECG monitoring and the intracavitary electrocardiogram p potential seen in pacing system analyzer. After completing the lead implantation, we will assess multiple parameters to verify whether the LBBaP is successfully achieved and to judge the feasibility and effectiveness of LBBaP using this method without electrophysiological multichannel recorder.
Discussion: This study will aim to demonstrate the effectiveness and feasibility to achieve LBBaP combining the multi-lead ECG monitoring and the intracavitary ECG of pacing system analyzer without electrophysiological multichannel recorder.
Trial registration: This trial is registered with the Chinese Clinical Trial Registry (ChiCTR2100044845; March 30, 2021 (URL: http://www.chictr.org.cn/showproj.aspx?proj=124207).
WITHDRAWN: A new method of facial image compression based on meta-heuristic algorithms with variable bit budget allocation
Authors: khodadadi Reza , Ardeshir Gholamreza , Grailu Hadi 
Published: December 2022

Abstract
One of the important research areas in imaging is the formation of images, which plays an important role in many different applications, including surveillance, control, and security affairs. On the other hand, high spatial resolution is one of the most important factors for increasing image quality, but it increases the amount of storage memory. Based on this, it is expected that the processing methods will be concentrated in this area. In face recognition systems, one of the existing challenges is maintaining the image recognition rate. These images in the recognition system may affect the efficiency of the system, and as a result, it may be inferred that the percentage of recognition is found. Proposing a method that at least does not reduce detection rates would be very desirable. This article investigates how to compress facial images with high spatial resolution using innovative algorithms to reduce or even increase their accuracy as much as possible. In this article, meta-heuristic algorithms (genetics and gray wolf) are used in a way that they are responsible for identifying the important and similar areas of matching macroblocks in the whole image segmentation. So how arranging the length of the bit string of each block is appropriate to achieve the target estimation to achieve the highest recognition accuracy value, PSNR value, and SSIM value of the image set? In the simulation and evaluation section, the facial images of the CIE and FEI databases have been examined as a selective study, and the recognition efficiency of the images for the conditions without/with compression and the common SPIHT and JPEG coding methods and compared with the proposed method. The simulation results show the significant impact of the proposed methods using meta-heuristic algorithms in increasing the quality of PSNR and SSIM in contrast to the recognition efficiency. According to the proposed method, the larger the value of dividing the blocks, the better the average PSNR and SSIM, assuming the highest recognition accuracy can be reached in both meta-heuristic algorithms. In general, depending on the type of application of the problem, there is a compromise to achieve the highest average PSNR or SSIM, using a genetic algorithm or gray wolf. The gray wolf algorithm, however, reaches its optimal answer much faster than the genetic algorithm.
Loess deposit reveals variations of 100-kyr cycle of temperature and 20-kyr cycle of precipitation at the low latitude of East Asia
Authors: Li Xusheng , Zhou Yuwen , Han Zhiyong , Yuan Xiaokang , Yi Shuangwen , Lu Huayu 
Published: December 2022

Abstract

The cycle of precipitation change indicated by different proxy indicators are found to be inconsistent, which results in the “Chinese 100-kyr Problem”. The loess deposited in the past ~350 ka at the low latitude of East Asia is measured here. We find that the magnetic susceptibility varied at 100-kyr and 40-kyr cycles, can be interpreted as proxy for temperature. In contrast, the DCB-extractable iron varied at 50-kyr, 20-kyr and 10-kyr cycles, can be interpreted as proxy for precipitation. Our results indicate that the temperature and precipitation in the past ~350 ka at the low latitude of East Asia have varied at different cycles, and the change of East Asian summer monsoon indicated by the precipitation in this region is mainly forced by the insolation change due to a variation in the precession.
Pouring From An Empty Cup: Burnout Among Surgical Residents in Central Ethiopia. 2020
Authors: Duguma Yeabsera Mekonnen , Kejela Segni , Abay Eleleta Surafel , Abebe Nebyou Seyoum 
Published: December 2022

Abstract
Background
Medical training is academically rigorous and physically and psychologically demanding. Immense clinical responsibilities, substandard work environments, and the toll these take on the mind and body contribute to significant stress. Burnouts emanate from these factors and in turn affect the work performance and satisfaction of an individual at every level of practice.
Material and method
This is a cross-sectional study involving all surgical residents across all fields of specialty: general surgery, neurosurgery, pediatric surgery, urology, and plastic and reconstructive surgery in Addis Ababa University, College of Health Sciences.
Result
Of the 190 surgical residents in training at the time of the study, 159 completed the survey, amounting to a response rate of 83%. Following further exclusion of incomplete data, a total of 146 responses were analyzed. Of these, 88 (60%) fulfilled at least one criterion of the sub-scales for burnout while 21 (14.4%) met the criteria for burnout in all sub-scales.
Considering the individual contributions of the factors, the result showed that both sleep for more than 6 hours (B=0.357, t=4.6, p<0.001) and residence within the hospital compound (B= 0.229, t=2.96, p=0.004) positively predicted Emotional Exhaustion subscale. In contrast, involvement in extra-professional activities (B=-0.247, t=-3.16, p=0.002) and taking vacations (B=-0.27, t=-3.47, p<0.001) were negative predictors of Depersonalization, while sleep more than 6 hours (B=0.212, t= 2.71 p=0.008) and frequent duties (>1 per week) (B=0.17, t=2.2, p=0.029) positively predicted it. Finally, residence within the hospital compound (B=-0.206, t=-2.62, p=0.01) negatively predicted Personal Accomplishment, while involvement in extra-professional activities (B=0.238, t=-3.03, p=0.003) and being religious (B=0.174, t= 2.21, p=0.028) positively predicted Personal Accomplishment.
Conclusion
The burnout rate was found to be high (60.3%) among our study population. Engagement in extra-professional activities, religious pursuits, and vacations was protective against at least one burnout sub-scale. Residence within the hospital compound, more frequent duty programs, and longer sleep hours were predictors of at least one of the burnout sub-scales. Institutions at large, and the specific residency programs therein should assess the rate of burnout in their respective programs along with the risk factors in order to dampen the rate and effects of it.