bluuebunny/crossref_metadata_2025_split huggingface dataset:
"I Used to be Scared to Even Like Stand Beside Somebody Who Had It": HIV Risk Behaviours and Perceptions among Indigenous People Who Use Drugs
Authors: Lavalley Jennifer , Western Aboriginal Harm Reduction Society  , Livingstone Christopher , Steinhauer Melissa , Goodman Ashley , Kerr Thomas 
Published: October 2021

Objectives: In Canada, and elsewhere, Indigenous people who use illicit drugs and/or alcohol (WUID/A) experience a disproportionate burden of HIV-related harm. This study examined HIV risk perceptions and behaviours among Indigenous people WUID/A living in the Downtown Eastside (DTES) and the policies and practices that shape inequities and vulnerabilities for them in HIV testing and treatment. Further, we aimed to situate the vulnerabilities of Indigenous people WUID/A in HIV care within the context of wider structural inequality and generate recommendations for culturally relevant and safe HIV treatment options.
Methods: This research employed an Indigenous-led community-based participatory approach using talking circles to explore experiences of Indigenous people living with HIV. Under the participatory research framework, community researchers led the study design, data collection, and analysis. Talking circles elicited participants’ experiences of HIV knowledge, testing, and treatment, and were audio-recorded and transcribed. Data were coded line-by-line and codes were organized into themes.
Results: Five key themes were identified via the talking circles: evolving HIV risk perceptions (e.g., HIV knowledge and testing, and “intentional exposure”); research as an avenue for HIV testing; HIV treatment and discussions about grief and loss; HIV-related stigma and discrimination; and the importance of culturally-relevant and safe HIV treatment options for Indigenous people WUID/A.
Discussion: Our work reveals that Indigenous people WUID/A do not have adequate access to HIV knowledge and education, often limiting their ability to access HIV testing and supports. Participant stories revealed both internalized and community stigma and discrimination, which at times compromised connection with participants' home communities. Further, our findings point to a failure in the public health system to deliver accessible HIV information to Indigenous Peoples, hence, many participants have solely relied on participation in community-based research studies in the Downtown Eastside (DTES) for HIV education and knowledge. There is an urgent need for accessible, culturally safe, and community-based education and treatment options for Indigenous people WUID/A within HIV care.
Research on Phylogenetic Relationship of Lotus Populations Collected in Thua Thien Hue Province, Vietnam based on the Chloroplast Genome by DNA Barcode
Authors: Long Dang Thanh , Hong Hoang Thi Kim , Tram Le Ly Thuy , Trang Nguyen Thi Quynh 
Published: October 2021

Background: The DNA barcoding is currently an effective and widely used tool that enables rapid and accurate identification of plant species. Methods: DNA barcoding of 9 chloroplast genes (rbcL, matK, trnH-psbA, accD-psaI, ndhA, psbE-petL, Rpl32-trnL, trnW-psaJ, trnSGCU-trnGGCC) were used to provide the theoretical basis for species identification, genetic diversity analysis of lotus population collected in Thua Thien Hue province, Vietnam. Universal primers were used and sequence products were analyzed using the MEGA X program. Result: The results showed that high levels of haplotype diversity (Hd), ranging from 0.618-0.869 and low levels of nucleotide diversity (Pi), ranging from 0.180 × 10-3-3.280 × 10-3 base on a total of nine gene regions of chloroplast genome. The neutrality tests show an excess of rare nucleotide position variations in individuals’ white lotus and derived haplotypes recent expansion. While the evolution of the individuals in the pink lotus may have to decrease. The phylogenetic analyses indicated that combined sequences were not insufficient to make a difference to the DNA barcoding in the individual’s lotus of the N. nucifera species this is in the study. The standardized and accurate barcode information of lotus is provided for researchers. It lays the foundation for the conservation, evaluation, innovative utilization and protection of Nelumbonaceae germplasm resources.
The view of foster parents’ on the adequacy of foster care grant in meeting the needs of recipients in Amathole District, South Africa
Authors: Hendricks Eleanor A 
Published: October 2021

Initially, foster care grant originated to assist children removed from their families of origin and placed in alternative care due to their vulnerability, neglect and abuse. Foster care grant forms part of the child protection system and it is issued to children whom require care and protection and are deprived of proper upkeep. The aim of the study was to explore the view of foster parents on the sufficiency of the child support grant in meeting the basic needs of beneficiaries. The study adopted a qualitative research approach. Moreover, in-depth interviews were used to collect data with purposively selected participants. The finding of this study revealed that the grant is sufficient in providing for the nutritional, educational and sartorial needs of beneficiaries. The study sample consisted of twenty-five participants. The study concluded that the grant is sufficient but could be increased to provide funds for some additional stuffs like educational policies, which is essential in securing a decent future for children.
Keywords:
Sufficiency, basic needs, foster care grant, beneficiaries.
Method for Calculating Transients in a Gas Pipeline
Authors: Fikov A. S. 
Published: October 2021

Abstaract. An analytical solution of a system of partial differential equations describing the unsteady isothermal flow of real gases in gas pipelines is considered. Such a problem arises when studying the regularity of alterations in the instantaneous values of pressure and gas flow in main gas pipelines, for example, during startups and shutdowns of large gas consumers. Meanwhile, transients are not necessarily of a pronounced oscillatory nature, despite the fact that they are described by periodic functions. In the course of the research, the task was set to obtain a mathematical model of the process taking into account the inertial term of the equation of motion, the neglect of which is possible only if the friction losses are exceeded by 3.5–4 times over the shock pressure. An important feature of the solution that have been found is its universality, which makes it possible to significantly reduce labor costs when using it to find partial solutions to practical problems that differ in boundary conditions. The boundary conditions of the first kind are given as an arbitrary function of both the gas flow rate and its pressure. The solution is based on the widely used method of separation of Fourier variables. In order to simplify the calculations, the original differential equation is transformed in such a way that the boundary conditions acquire the property of homogeneity. It has been determined that the requirements that the boundary conditions are equal to zero at the initial moment of time introduced into the solution make it possible to obtain a concise record of the obtained analytical model, but do not limit the area of the use of the model with a surge change in the gas flow rate or pressure. The obtained analytical model of unsteady gas flow makes it possible, without using the Duhamel integral, to find analytical solutions under more complex boundary conditions than the flow rate jump. At the same time, the solutions found completely coincide with the solutions based on the Duhamel integral, but in the course of the solution that we have found it is possible to avoid integration, which has a positive effect on the applicability of this approach in the practice of engineering calculations.
Method for simulating processes of processing inhomogeneous data in buffer drives of routers
Authors: Chernyavski P. S. 
Published: October 2021

The article proposes a method for modeling the processing of heterogeneous data in the buffer storage of routers. In contrast to the existing approaches, in the developed method, in the analytical description of the processes of functioning of buffer storage devices of routers under the influence of heterogeneous traffic of subscribers of a special-purpose communication network, the apparatus of the theory of cellular automata was used, which made it possible to take into account the probability of timely processing of data of all used priority levels of communication directions.As a result of the experiment carried out on the basis of a real special communication network, it was found that the developed method of modeling the processes of processing inhomogeneous data of buffer storage devices of routers makes it possible to increase the accuracy of determining the probability of timely delivery of priority information to subscribers of a special purpose communication network, in comparison with the existing standardized methods.
Optimized Protocol for Chelex-based Extraction of DNA from Historical Skeletal Remains and Forensic Trace Samples
Authors: Schmerer Wera M 
Published: October 2021

Abstract
PCR-based analysis of skeletonized human remains is a common aspect in both forensic human identification as well as Ancient DNA research. In this, both areas not merely utilize very similar methodology, but also share the same problems regarding quantity and quality of recovered DNA and presence of inhibitory substances in samples from excavated remains. To enable amplification based analysis of the remains, development of optimized DNA extraction procedures is thus a critical factor in both areas.The method paper here presents an optimized protocol for DNA extraction from ancient skeletonized remains using Chelex-100, with improved effectively in yielding amplifiable extracts from sample material excavated after centuries in a soil environment, which consequently have high inhibitor content and overall limited DNA preservation. Further studies showed that the optimized protocol can likewise be utilized for extraction of DNA from common and trace Forensic sample material.
Atmospheric Density Model Optimization and Spacecraft Orbit Prediction Improvements Based on Q-Sat Orbit Data
Authors: Bai Shunchenqiao , Wen Guangwei , Wang Zhaokui 
Published: October 2021

Abstract
Atmospheric drag calculation error greatly reduce the low-earth orbit spacecraft trajectory prediction fidelity. To solve the issue, the "correction - prediction" strategy is usually employed. In the method, one parameter is fixed and other parameters are revised by inverting spacecraft orbit data. However, based on a single spacecraft data, the strategy usually performs poorly as parameters in drag force calculation are coupled with each other, which result in convoluted errors. A gravity field recovery and atmospheric density detection satellite, Q-Sat, developed by xxxxx Lab at xxx University, is launched on August 6th, 2020. The satellite is designed to be spherical for a constant drag coefficient regardless of its attitude. An orbit prediction method for low-earth orbit spacecraft with employment of Q-Sat data is proposed in present paper for decoupling atmospheric density and drag coefficient identification process. For the first step, by using a dynamic approach-based inversion, several empirical atmospheric density models are revised based on Q-Sat orbit data. Depends on the performs, one of the revised atmospheric density model would be selected for the next step in which the same inversion is employed for drag coefficient identification for a low-earth orbit operating spacecraft whose orbit needs to be predicted. Finally, orbit forecast is conducted by extrapolation with the dynamic parameters in the previous steps. Tests are carried out for the proposed method by using a GOCE satellite 15-day continuous orbit data. Compared with legacy “correction - prediction” method in which only GOCE data is employed, the accuracy of the 24-hour orbit prediction is improved by about 171m the highest for the proposed method. 14-day averaged 24-hour prediction precision is elevated by approximately 70m.
Performance of Hypotension Prediction Index for Prevention of Hypotension and Results on Biomarkers of Organ Injury and Oxidative Stress During Elective Non-Cardiac Surgery: A Randomized Controlled Trial
Authors: Murabito Paolo , Astuto Marinella , Sanfilippo Filippo , Via Luigi La , Basile Francesco , Cappellani Alessandro , Longhitano Lucia , Distefano Alfio , Volti Giovanni Li , Vasile Francesco 
Published: October 2021

Abstract
Background: Intraoperative hypotension is associated with increased postoperative morbidity and mortality. We tested whether the clinical application of an early warning system (EWS) in combination with an algorithm for hemodynamic management reduces the occurrence of intraoperative hypotension as well as decrease the degree of organ injury and oxidative stress. Methods: We randomly assigned patients undergoing major general surgery EWS and hemodynamic algorithm (intervention group, n=20) or standard care (n=20). The primary outcome was the difference in hypotension (defined as mean arterial pressure<65mmHg) evaluated as episodes, time and time-weighted average of hypotension. As secondary outcome we assessed surrogate markers of organ injury (neuron specific enolase -NSE), S100B protein, high-sensitive troponin, neutrophil gelatinase-associated lipocalin -NGAL) and oxidative stress (reduced glutathione). Results: The median number of hypotensive episodes was lower in the intervention group [-5.0 (95%CI:-9.0,-0.5);P<0.005], with lower time spent in hypotension [-12.8 minutes (95%CI:-38.0,-2.3 min);P<0.001], correspondent to -4.8% of total surgery time (95%CI: -12.7,0.01%; P<0.05). The median time-weighted average of hypotension was 0.12 mmHg (0.35) in the intervention group and 0.37 mmHg (1.11) in the control group, with a median difference of -0.25 mmHg (95%CI:-0.85, -0.01;P<0.05). NGAL was correlated with time-weighted average of hypotension (R=0.32;P<0.05) and S100B with all primary outcomes investigated (all P<0.001). The intervention group had lower NSE and higher reduced glutathione when compared to the control group. Conclusions: The use of an EWS coupled with an hemodynamic algorithm resulted in reduced intraoperative hypotension. This finding was coupled with a reduction of biomarkers of brain injury and oxidative stress.Trial Registration number and date: “Correlation Between Circulating Biomarkers of Organ Damage and Intraoperative Hypotension Management”, NCT03527758, registered on May 17, 2018.https://www.clinicaltrials.gov/ct2/show/NCT03527758?term=NCT03527758&draw=2&rank=1
The Relation Between Quality of Relationships and Quality of Life of Elderly Widows in Northeastern Iran
Authors: Pirzadeh Nasim , Nazari Mahin , Asadollahi Abdolrahim 
Published: October 2021

Abstract
Objectivewidowhood is one of the inevitable challenges of aging, which may affect the quality of life. If the widow is in a good relationship with relatives and friends, the possibility of exposition to the damage caused by widowhood is decreased. Hence, the present study has been conducted to determine the relationship between quality of relationships and quality of life of elderly widows in northeastern Iran.Materials & Methodsthe descriptive-analytical study in kind of cross-sectional design was done on 1456 widows in northeastern ran in 2021. The sampling in this study was done using proportional stratified random sampling. The data collection instrument included three questionnaires of demographic information, Quality of Relationships Inventory (QRI), and Elderly Quality of Life (QoL) Questionnaire (LIPAD). Data analysis was done using SPSS-25, and Amos-21.Results75.9% of elderly widows were suffering from types of chronic diseases. 82.7% of widows were illiterate. The results of this study showed that the quality of relationships can have a significant effect on the quality of life of elderly widows (effect size≥0.30). Conclusionas it is proved that social support is an underlying indicator in health-related quality of life, the negative effects of widowhood on the quality of life can be reduced by making supporting family and social relationships.
Technical Feasibility of Biodiesel Production From Waste Cooking Oil: Comparison Between Electric Heating and Microwave Heating Process
Authors: Li Wenjing , Li Guangming , Wang Fan , Zhu Haochen , He Wenzhi , Huang Juwen 
Published: October 2021

Abstract
Base-catalyzed transesterification and conversion of waste cooking oil (WCO) into biodiesel is a renewable energy production technology with a wide range of applications. The most commonly used heating method is electric heating (EH). Microwave heating (MW) has the characteristics of high heat transfer efficiency and short preheating time, and has recently received attention in this field.This study compared effects of the alkali-catalyzed transesterification reaction of WCO under EH and MW processes. The maximum biodiesel yield of EH process appeared when the reaction temperature is 60 °C, the reaction time is 30 min, the molar ratio of alcohol to oil is 6:1, and the catalyst concentration is 1.0%, up to 93.4%. The maximum biodiesel yield obtained from MW technique is 80.66%, under the condition of 200W, 5min, 1wt. % KOH and the methanol/oil molar ratio of 9:1. The activation energy for CH and MW process are found to be 6 768 J·mol-1 and 503.4 J·mol-1, respectively. Microwave heating greatly reduced the activation energy of the reaction, as well as transesterification yield. Compared with other biodiesel producing process, EH process in this study has the advantages of high speed and low production cost, while biodiesel yield is slightly insufficient. This is likely due to the small amount of un-removed moisture contained in the WCO.
Molecular markers based genetic relatedness studies in tissue culture propagated Japanese plum cultivars Santa Rosa and Frontier
Authors: Thakur Manisha , Luharch Rakshandha , Sharma Vishal , Sharma Dharam Paul 
Published: October 2021

Abstract
Santa Rosa and Frontier are the major Japanese plum cultivars grown throughout the world. The present investigation was performed to understand the genetic relatedness among in vitro propagated plum cultivars Santa Rosa and Frontier using PCR based molecular markers. For the study, three arbitrary markers viz. RAPD (Random amplified Polymorphic DNA), ISSR (Inter-Simple Sequence Repeats) and SCoT (Start Codon Targeted) were used. In RAPD analysis, 18 primers out of 28 amplified and generated 33 scorable bands. The allelic variations when analysed, revealed 84 percent similarity between these two cultivars with highest polymorphic information content of 0.78. Similarly, 15 ISSR primers produced 73 amplicons with an average of 4.86 amplicon per primer and similarity coefficient ranging from 62 to 67 percent. Seven SCoT primers out of 26 resulted in a total of twenty- six scorable bands with 24 polymorphic bands. Cluster analysis from all the three markers used broadly divided plum cultivars santa rosa and frontier into two major clusters containing in vitro shoots, their progenies and mother trees of respective genotypes. The study concluded that these three marker systems were found to be effective in revealing genetic relationship of these two commercially important plum cultivars.
Health Care Consequences of Hospitalization with Clostrioides Difficile Infection: A Propensity Score Matching Study
Authors: Hirsch Bruce E. , Williams Myia S. , Lesser Martin L. , Pappas Karalyn , Stefanov Dimitre G. , Iglio Thomas , Gordon Craig , Pekmezaris Renee 
Published: October 2021

Abstract
Background: Clostridiodies difficile infection (CDI) has been characterized by the Center for Disease Control and Prevention (CDC) as an urgent public health threat and a major concern in hospital, outpatient and extended-care facilities worldwide.Methods: A retrospective cohort study of patients aged ≥18 hospitalized with CDI in New York State (NYS) between January 1, 2014-December 31, 2016. Data were extracted from NY Statewide Planning and Research Cooperative (SPARCS) and propensity score matching was performed to achieve comparability of the CDI (case) and non-CDI (control) groups. Of the 3,714,486 hospitalizations, 28,874 incidence CDI cases were successfully matched to 28,874 controls.Results: The matched pairs comparison demonstrated that CDI cases were more likely to be readmitted to the hospital at 30 (28.2625.53% vs. 19.4618.55%), 60 (37.65% 34.01% vs. 26.0225.18%), 90 (42.9338.79% vs. 30.4329.70%) and 120 days (46.47%41.99% vs. 33.7432.93%), had greater mortality rates at 7 (3.68 11.18% vs. 2.015.15%) and 180 days (20.5426.56% vs. 11.9614.82%), with significant increases in length of stay and total hospital charges (p<0.001, respectively). Conclusions: CDI is associated with a large burden on patients and health care systems, significantly increasing hospital utilization, costs and mortality.
Biochar enhanced the nitrogen removal performance of heterotrophic nitrification-aerobic denitrification strain pseudomonas fluorescent sp. Z03 for insufficient carbon source wastewater under low temperature
Authors: Jiang Jie , XiaoyanXu  , Guo Zhina , Sun Lianglun , Tang Meizhen 
Published: October 2021

Abstract
In this study, biochar BC400 and BC700 were prepared, characterized and coupled with heterotrophic nitrification-aerobic denitrification (HNAD) strain Z03 for nitrogen removal experiments. The characterization results showed that BC700 has a higher specific surface area and a more complex multilayered pore structure, with increased aromatic condensation and higher crystallinity. BC400 and BC700 both have good redox activity, while BC400 has stronger electron donor capacities and BC700 owns better electron transfer properties. In addition, both BC400 and BC700 contain relatively high levels of dissolved organic carbon (DOC), reaching at 62.95 and 51.617mg/g respectively. BC400/BC700 coupled with strain Z03 can significantly improve the NH4+-N removal performance of low-temperature and low C/N wastewater compared with the control group. At a dosage of 4.0 g/L, the removal rate of NH4+-N reached to 95.16% (BC400 + Z03) and 84.37% (BC700 + Z03) within 72h, respectively. Higher than the sum of adsorption by BC400/BC700 (16.19%/18.85%) and microbial degradation (41.03%). Besides, the BC400 + BC700 + Z03 NH4+-N removal systems provide higher nitrogen removal efficiencies than BC400/BC700 + Z03 nitrogen removal systems. When the dosage (BC400 + BC700, mass ratio 5:1) reaches 3.0g/L, it can achieve more than 90% NH4+-N removal rate within 48h. The reasons for the promotion of biochar on microbial denitrification were analyzed as follows: 1) DOC can provide an additional carbon source for microorganisms; 2) biochar, as a pH buffer, can neutralize the acidity due to nitrification; 3) BC400 and BC700, as materials with good redox activity, may play a role in promoting the activity of electron transfer system and enzyme activity.