bluuebunny/crossref_metadata_2025_split huggingface dataset:
Activity Analysis of the Fuyu North Fault, China: Evidence from the Time-Series InSAR, GNSS, Seismic Reflection Profile, and Plate Dynamics
Authors: Liu Bin , Jiang Qigang , Zhang Ziwen , Li Yuanhua , Shi Mengyao , Zhang Zhenchao , Shi Pengfei , Liu Huaxin , Zhang Sen , Wang Peng 
Published: June 2022

Abstract
Earthquake disasters are frequent, and the seismic intensity is large in Northeast China. Earthquake activity research is an important aspect of earthquake disaster management. We chose some unconventional means to study fault activity, to find updated activity evidence. The Ms 5.3 earthquake occurred near the Fuyu North Fault (FNF) of China on May 27, 2018. Using the Sentinel-1B descending orbit data from 2016 to 2019, the line-of-sight (LOS) surface deformation in the study area was calculated by using the small baseline subset (SBAS) method. After transforming to the horizontal EW deformation, the variance component estimation method was used for fusion reconstruction with the EW data of the surrounding GNSS stations. The polynomial least square method is used to fit the fault slip rate of three EW data on the surface trace of the FNF. The fitting results of the three regions show that the horizontal eastward distribution rate of the upper plate is significantly greater than that of the lower plate, which is left-lateral clockwise torsion. The vertical structural deformation caused by the growth strata of the upper and lower plates of the upper SYT2 seismic profile of the FNF is quantitatively calculated, and the thrust rate of the upper plate is 0.2 mm/y relative to that of the lower plate. Based on the Li Siguang chessboard structure model, we found that the compression stress in the north-south direction is gradually weakened, and the compression stress in the east-west direction is gradually enhanced. Through the Coulomb stress analysis, the three events of CMT only induced the historical focal location of the surrounding part. The events of 2017 did not induce the events of 2018, but the events of 2019 were related to the induced effects of 2017 and 2018.
Research on the Floor Rockburst of Panel Entry under the Mining Influence: A Case Study
Authors: Feng Hao , Ma Xiang , Zhao Yang , Jiang Lishuai , Wen Xinglin , Cong Qian , Wang Fangtian 
Published: June 2022

Abstract
The stability of the entries of longwall panels is the key to ensure efficient and safe production of coal mines. In order to solve the common problems of floor heave of panel entry in western China, based on a case study, this paper studies the rockburst instability mechanism of entry floor-induced mining by considering the results from a laboratory test, numerical simulations, and field practice. After testing, the coal and rock of the entry are hard and brittle. In particular under the action of impact dynamic load, its dynamic strength is higher and has a positive correlation with the impact pressure, which provides a mechanical premise for subsequent rockburst. Numerical simulation results show that with the mining of the panel, the vertical stress and the maximum principal stress of the floor are mainly concentrated in the coal pillar along the entry, and the area and degree of concentration continue to increase. The horizontal stress is mainly concentrated in the entry floor, which is distributed in the advanced range of the panel. The deformation rate of the entry roof and the ribs is stable, while the floor shows a “mutation” characteristic of not deforming when the panel is far away and suddenly rising when it is closer to the panel. The range of the plastic zone of the roof and floor remains unchanged, the ribs are further deepened, and the mechanical properties of the coal and rock mass are further weakened. The results of this study contribute to providing a reference for the control of surrounding rock of panel entry under similar geological and geotechnical circumstances.
Investigations on OFDM-FSO transmission system for UAV-to-Ground Links
Authors: Singh Mehtab , Grover Amit , Kakati Dhiman , Elsayed Ebrahim E 
Published: June 2022

Abstract
The seamless deployment of 5G and beyond future wireless networks requires ultra-high information rate, cost-efficient, easily deployable and scalable, front-haul and backhaul framework. Motivated by the growing interest in the application of unmanned aerial vehicles (UAV) to boost conventional cellular mobile networks' coverage and performance, this article proposes a UAV-to-ground terminal communication link based on free-space optics (FSO) technology for front-haul and backhaul network traffic. To enhance the system's traffic carrying capacity, robustness, and spectral efficiency, we propose the integration of orthogonal-frequency division multiplexing (OFDM) in the proposed framework. 20 Gbps 4-ary quadrature amplitude modulated (4-QAM) data signal is transmitted over varying channel conditions. The proposed framework performance is investigated for increasing the range of transmission and divergence angle of the beam. The simulations demonstrate that the proposed 4-QAM-OFDM-FSO framework can provide high information transmission rate for front-haul and backhaul traffic and can be a viable solution for the emerging needs of 5G wireless networks.
Evaluation of risk stratification and sepsis-related mortality in patients with positive blood cultures via procalcitonin, combined with the PIRO system in ED
Authors: Yang Long , Lin Yue , Zhang Xiangqun , Wei Bing , Ye Xinhua , Yang Jun , Song Jianmei , Wang Junyu , Liu Bo 
Published: June 2022

Abstract
Background: The aim of the study was to evaluate risk stratification and sepsis-related mortality in patients with positive blood cultures via procalcitonin (PCT) combined with the predisposition，infection, response, and organ dysfunction (PIRO) system in emergency departments (ED). Methods: A total of 1074 patients with positive blood cultures were admitted to Beijing Chao-Yang Hospital ED from December 2017 to October 2020. Their serum PCT was recorded, along with a Sequential Organ Failure Assessment (SOFA) score, Mortality in Emergency Department Sepsis (MEDS) score, Acute Physiology and Chronic Health Evaluation II (APACHE II) score, and PIRO score to predict the prognosis of septic patients with positive blood culture in terms of ICU (Intensive care unit) admission, multiple organ dysfunction syndrome (MODS) development, and 28-day mortality. Receiver operating characteristic (ROC) curves and logistic regression analysis were used to assess the prognostic value of the scoring systems.Results: On admission, 978 patients met the inclusion criteria. PCT, MEDS, APACHE II, and PIRO scores were found to independently predict ICU admission, MODS development, and 28-day mortality (P<0.05), whereas SOFA did not. The AUC values of the PCT, MEDS, APACHE II, and PIRO scores for ICU admission were 0.620, 0.740, 0.780, and 0.751, respectively. For MODS, the AUC values of PCT, MEDS, APACHE II, and PIRO were 0.664, 0.701, 0.761, and 0.811, respectively. In the prediction of 28-day mortality, the AUC values of PCT, MEDS, APACHE II, and PIRO were 0.782,0.745,0.805, and 0.831, respectively. The AUC values combined PCT and PIRO system in predicting MODS and 28-day mortality were better than when predicting ICU admission. Meanwhile, the AUC values of PCT when combined with MEDS, APACHE II, or PIRO score were higher than that of any single predictor. Conclusions: This study indicates that PCT combined with the PIRO scoring system has a higher predictive value and is superior in predicting MODS and 28-day mortality in septic patients with a positive blood culture.
Acute effect of Melon Manis Terengganu peel powder on glycemic response, perceived satiety, and food intake: a randomized, placebo-controlled crossover trial in adults at risk of type 2 diabetes
Authors: Ong Ying Qian , Harith Sakinah , Shahril Mohd Razif , Shahidan Norshazila , Hapidin Hermizi 
Published: June 2022

Abstract
Background
Melon Manis Terengganu (MMT) peel has a high dietary fiber content, but there is no data examining its health benefits in adults at risk of type 2 diabetes. The objective of the study was to evaluate whether consumption of MMT peel powder improves glycemic response, satiety, and food intake in adults at risk of type 2 diabetes.
Methods
An open-label, randomized, placebo-controlled, crossover design trial was conducted among adults (n = 30, ages 18–59 y) at risk of type 2 diabetes. They consumed Formulation 3 (formulated MMT peel powder) [A] and control (glucose) [B] with study breakfast based on randomly assigned treatment sequences (AB, BA) established by Research Randomizer (www.randomizer.org). Capillary blood glucose and perceived satiety were determined at baseline (0 min), 30, 60, 90 and 120 min, followed by a post-intervention food intake measurement.
Results
Respondents (n = 30) who consumed Formulation 3 had a significantly lower blood glucose 2-hour incremental area under the curve (iAUC) of 134.7 ± 44.5 mmol/L*min and maximum concentration (CMax) of 7.2 ± 1.1 mmol/L with relative reduction of 26.8% and 13.3% respectively, when compared with control (p < 0.001). However, the two-way repeated measures analysis of covariance (ANCOVA) revealed no significant time and group*time effects in blood glucose levels after controlling confounding factors (p > 0.05). Besides, significantly lower perceived satiety, energy and fat intake as well as higher fiber intake were also observed in the intervention group compared with the placebo group (p < 0.05). There were no marked side effects associated with the ingestion of the test products.
Conclusions
Short-term consumption of formulated MMT peel powder may have a positive impact on glycemic response (iAUC and CMax), satiety, and food intake in adults at risk of type 2 diabetes with the potential to be utilized as a functional beverage. Medium-to long-term clinical trial is warranted to determine whether taking this formulated MMT peel powder on a daily basis has an influence on health outcomes.
Trial registration:
ClinicalTrials.gov Identifier: NCT05298111. Registered 28/03/2022.
Preparation, characterization and properties of high anti-erosion grouting materials from industrial solid waste
Authors: Gao Yifan , Li Zhaofeng , Xin Gongfeng , Shen Quanjun , Zhang Jian , Liu Xiaolin 
Published: June 2022

Abstract
To address the environmental problems caused by the storage of solid waste and the poor corrosion resistance of Portland cement (PC), high anti-erosion grouting materials (HAGM) were synthesised from red mud (RM), silica fume (SF), carbide slag (CS), and flue gas desulfurization gypsum (FGD). The synthesis, structural characterisation, and properties of HAGM were reported, and compared with those of a typical PC. The results showed that the main mineral composition of the HAGM matrix is hydration phases: 68.3 wt.% β-C2S, 21 wt.% C4AF, and 8.4 wt.% C3A. The compressive strength and rheological characteristics of HAGM prepared with 8 wt.% FDG is the best. The hydration of the HAGM led to the formation of ettringite, C3(A, F)H6, aluminum gel, resulted in compressive strength of 16.70 MPa after curing for 28 d. The anti-erosion coefficient K of HAGM after exposure to different erosion solutions for 28 d was greater than 0.99, which indicated better corrosion resistance than PC. This high anti-erosion resulted from the mineral composition of low C3S content and high C4AF content. This study provides a feasible and promising way for the preparation of disaster prevention materials in coastal engineering.
Proteomic analysis to unravel the biochemical mechanisms triggered by Bacillus toyonensis SFC 500-1E under chromium(VI) and phenol stress
Authors: Fernandez Marilina , Callegari Eduardo A. , Paez María D. , González Paola S. , Agostini Elizabeth 
Published: June 2022

Abstract
Bacillus toyonensis SFC 500-1E is a member of the consortium SFC 500-1 able to remove Cr(VI) and simultaneously tolerate high phenol concentrations. In order to elucidate mechanisms utilized by this strain during the bioremediation process, the differential expression pattern of proteins was analyzed when it grew with or without Cr(VI) (10 mg/L) and Cr(VI)+phenol (10 and 300 mg/L), through two complementary proteomic approaches: gel-based (SDS-PAGE) and gel-free (nanoUPLC-ESI-MS/MS).A total of 400 differentially expressed proteins were identified, out of which 152 proteins were down-regulated under Cr(VI) and 205 up-regulated in the presence of Cr(VI)+phenol, suggesting the extra effort made by the strain to adapt itself and keep growing when phenol was added. The major metabolic pathways affected include carbohydrate and energetic metabolism, followed by lipid and amino acid metabolism. Particularly interesting were also ABC transporters and the iron-siderophore transporter as well as transcriptional regulators that can bind metals. Stress-associated global response involving the expression of thioredoxins, SOS response, and chaperones appears to be crucial for the survival of this strain under treatment with both contaminants. This research not only provided a deeper understanding of B. toyonensis SFC 500-1E metabolic role in Cr(VI) and phenol bioremediation process but also allowed us to complete an overview of the consortium SFC 500-1 behavior. This may contribute to an improvement in its use as a bioremediation strategy and also provides a baseline for further research.
Study on the control of high ore pass dust pollution by pre-injection foam dedusting technology in the ore bin
Authors: Zeng Fabin , Jiang Zhongan , Wang Yapeng 
Published: June 2022

Abstract
The impact airflow generated by ore unloading in the chute raises the dust carried by the ore itself and the floating dust and then the dust raised enters the roadway with the airflow and pollutes the environment. In order to minimize the amount of dust entering the roadway and reduce the pollution of unloading dust, we conducted an experimental study of selection of best foam formula and Pre-injection foam dust dedusting technology in ore bin. It was found that the optimal foaming formula was 1.0% SDBS + 0.5% SDS+(0.2%~0.4%)CMEA by the compound experiment using two evaluation criteria of initial foaming amount and foam defoaming rate. When the air pressure is 0.7MPa, the foaming rate of the foam generator is proportional to the gas and liquid flow rate and the best foaming gas and liquid flow ratio is 27.8. Under this circumstance, the foaming rate of the foaming formula is 500 L/min. When the height of foam is controlled at 15 cm, the effect of foam dust removal is the best. The dust emission rate from the foam to the fourth level can reach 60% and the dust fall rate of the third level is 28%, which effectively reduces the dust production and relieves the pressure of the spray hole dust fall at the wellhead.
WITHDRAWN: Messages Targeted to Global Warming’s Six Americas Can Increase Their Issue Engagement
Authors: Roser-Renouf Connie , Myers Teresa Ann , Luong Kate Tran , Maibach Edward Wile 
Published: June 2022

Abstract
A message-testing experiment assessed the effectiveness of targeted video messages in changing six audience segments’ climate change understanding and concern. Participants viewed one of four short videos addressing their segment’s informational needs, as identified by survey data on their segment’s climate change beliefs. Segments that are skeptical about climate change were targeted with videos on the scientific consensus and climate science. Segments that are unconcerned about climate change were targeted with a video on climate change impacts, and segments that are concerned were targeted with a video about climate solutions. Comparisons to controls, who did not view a video, revealed changes in issue understanding in response to the videos, and viewers of a message targeted to their segment’s informational needs were five percentage points more likely to move to a more engaged audience segment than viewers of untargeted messages. Implications for communicating with each of the six segments are discussed.
Provision of labour analgesia and its related barriers among maternal health care providers in Kenya: An institution-based descriptive survey.
Authors: Ouma Gabriel , Orango Omenge , Were Edwin , Omwodo Kimbley 
Published: June 2022

Abstract
Background: Although pain relief is a key component of modern obstetric care, it remains a poorly established service in sub-Saharan countries, such as Kenya. Maternal health care providers have an extensive role to play in meeting the analgesic needs of women, during childbirth. This study sought to examine the practice of labour pain relief and its deterrents among Kenyan maternal health care providers.Methods: This was an institution based, cross-sectional, descriptive survey. The study population included midwives, obstetricians, and anaesthesiologists working at the second largest tertiary facility in Kenya. A structured, self- administered questionnaire was used. The patterns of analgesic provision during labour, knowledge, attitude, and perceived barriers to labour pain management were described.Results: One hundred and seventeen respondents participated in the study, with a response rate of 97.5%. The prevalence of routine labour analgesia provision was 61.5%. The most common pharmacological method prescribed was non-opioids (13.4 %). Regional analgesia was provided by 4 (3.6%) of the respondents. Sex, cadre, and years of experience were significantly associated with the routine provision of labour analgesia. The majority of maternal healthcare providers (53.0%) had poor knowledge of labour pain management. Almost all (93.9%) of the respondents had a positive attitude towards the provision of labour analgesia. The non-availability of drugs and equipment (58.1%), lack of clear protocols and guidelines (56.4%), and absence of adequate skilled personnel (55.6%) were reported as the health system factors that hindered the provision of labour analgesia.Conclusions: More than half of maternal health care providers routinely relieved labour pain. Epidural analgesia is still relatively underutilized. There is a need for the development of institutional labour pain management protocols, to meet the analgesic needs of women during childbirth.
FEM Analysis and Verification of Pinless Friction Stir Spot Welding of Cu and Al with Zn Interlayer: Effect of Shoulder Diameter and Spot Pass
Authors: abdollahzadeh amin , Bagheri Behrouz , Vaneghi Alireza Heidari , Shamsipur Ali , Mirsalehi Seyyed Ehsan 
Published: June 2022

Abstract
A three-dimensional model for the pinless friction stir spot welding (P-FSSW) of copper-aluminum alloy with zinc interlayer was developed by the ABAQUS/Explicit. The distribution of temperature and stress at the joint zone, at three different shoulder diameters (including 16, 18, and 20 mm) and spot pass-number (including 1 to 3 pass), were simulated and verified by experimental measurements. Microstructural characteristics of the joint interfaces and phase evolution were analyzed by scanning electron microscope and X-ray diffraction, respectively. The numerical and experimental results showed a good agreement and it was found that with increasing shoulder diameter, heat generation by friction and plastic deformation was improved, while the stress was decreased. Mechanical measurements indicated that the best result of 7.45 kN was achieved for a shoulder diameter of 16 mm and three spot pass. From XRD analyses of the fracture surfaces, the Al2Cu, CuZn5, and CuZn2 intermetallic phases were detected in the joint interfaces. The simulation results showed that the axial compressive stresses experience the lowest values when the shoulder diameter is 16 mm. The fracture surface analysis showed the ductile fracture for weld sample joined under optimal welding condition namely shoulder diameter of 16 mm after three spot pass.
A new approach of modelling bottom edge cutting in four-axis roughing of blisk and its application on feedrate optimization
Authors: Zhao Jie , Chang Zhiyong 
Published: June 2022

Abstract
As important component of gas turbine engines, Blisks are complex in shape. The blisks are often rough machined in a four-axis machine tool with an end-mill, and the end-mill is fully engaged into the material to be removed. Because of the complex cutter motion in four-axis machining, the bottom edge of the end-mill is involved in cutting with a high possibility, resulting in undesirable cutting force increase, tool deflection and quick tool wear. To address this technical challenging, an analytical method to identify and evaluate the bottom edge cutting in four-axis machining is proposed in this work. The addition in cutting force caused by the bottom cutting edge are taken into consideration to precisely evaluate the overall cutting force. A feedrate optimization model is then established. The verification shows that the cutting force could be controlled by optimizing the feedrete without losing machining efficiency.
Antibacterial performance of curcumin loaded polycyclodextrin-coated zinc oxide nanomaterials in photodynamic therapy against Enterococcus faecalis
Authors: Gholibegloo Elham , Akbari Tayebeh , Torshabi Maryam , Saberi Sogol , Foroumadi Alireza , Shahabi Sima , khoobi mehdi 
Published: June 2022

Abstract
Antimicrobial photodynamic therapy (aPDT) is a high potential strategy for the treatment of microbial infections in endodontics. In this study, a novel antibacterial agent was designed and prepared based on the two morphologies of zinc oxide nanomaterials (NMs) as ZnO nanosphere (ZnOS) and ZnO nanorod (ZnOR). Their surfaces were coated with carnosine (CAR)-functionalized polycyclodextrin (ZnO@PCD-CAR) for higher payload of curcumin (CUR) as a photosensitizer (PS). This system was characterized using FT-IR, XRD, TGA, FE-SEM, zeta potential analysis and UV-visible spectroscopy. The colony forming unit (CFU) assay was carried out to evaluate the antimicrobial properties of the nanoformulations againts Enterococcus faecalis (E. Faecalis). The target products (ZnOS@PCD-CAR/CUR and ZnOR@PCD-CAR/CUR) exhibited a light stability approximately by 2.9 and 2.8 fold, respectively, higher than the free CUR. Compared to the bare CUR, these materials indicated more stability againts pH variations. ZnOS@PCD-CAR/CUR and ZnOR@PCD-CAR/CUR NMs-mediated aPDT, significantly declined the count of E. Faecalis strains about 1.5 and 2 log (P < 0.05). Due to the high CUR loading, proper stability and significant inhibitory effects against E. Faecalis, ZnO@PCD-CAR/CUR could be considered as a promising antimicrobial agent in aPDT for efficient treatment of root canal infections.
Purification and Characterization of Stenotrophomonas maltophilia Chitinase with Antifungal and Insecticidal properties
Authors: Aktas Cigdem , Ruzgar Damla , Gurkok Sumeyra , Gormez Arzu 
Published: June 2022

Abstract
This study aimed to determine the ability of bacteria to produce the chitinase enzyme, purify and characterize the enzyme from the isolate with the best activity, and determine the use of this purified enzyme as a biocontrol agent. The chitinolytic bacterium was identified as Stenotrophomonas maltophilia. The chitinase enzyme was purified 1.4 times at a 30% ammonium sulfate concentration with a yield of 40.7%. Following partial purification, the enzyme was purified by ion-exchange chromatography using HiPrep Q XL 16/10 column and HiPrep ™ 26/10 desalting column with 25.34% and 18.12% yields, respectively. The molecular weight of the purified enzyme was calculated as 52 kDa by SDS-PAGE. The optimum temperature of the enzyme was determined to be 50°C, and the optimum pH was 7.0. While Fe2+ most induced the activity, it was most inhibited by Zn2+ at a 5 mM concentration. Km and Vmax values of the enzyme for colloidal chitin were calculated as 1.6419 mg/ml and 16.129 U/mg, respectively. The purified chitinase was used as a biocontrol agent against the fungus Fusarium oxysporum and potato beetle Leptinotarsa decemlineata. The enzyme was shown to be effective in reducing the growth of fungus and causing disruption of the chitin structure of potato beetle.