bluuebunny/crossref_metadata_2025_split huggingface dataset:
Mitral valve replacement using a collar-reinforced mitral prosthesis for severe mitral annular calcification, which secures implantation in both the supra-annular and intra- atrial positions: A case report
Authors: Morishita Atsushi , Tomioka Hideyuki , Katahira Seiichiro , Hoshino Takeshi , Hanzawa Kazuhiko 
Published: April 2023

Abstract
Background: Appropriate management of mitral annular calcification associated with mitral valve surgery must be determined on a case-by-case basis. However, an established procedure remains uncertain.
Case presentation: This report describes a surgical case of severe mitral and aortic valve stenosis associated with severe mitral annular calcification in a 71-year-old woman who underwent mitral valve replacement with a collar-reinforced mitral prosthesis. The patient underwent surgical repair after the treatment for heart failure. As the present patient was deemed to be at high risk for conventional mitral valve replacement, we applied a composite prosthetic valve that was enlarged circumferentially on the ventricular side of the prosthesis with a bovine pericardial patch. First, the solid calcium bar was left untouched and only the friable calcified mass that was easily scattered was removed. Subsequently, the prosthesis was secured by two mattress sutures placed in the intra-atrial position at the region of the extended calcified myocardium. Additionally, ten mattress sutures were placed in the supra-annular position at the other regions capable of passing stitches from the ventricular side to the atrial side. Finally, a 1.5 cm wide trimmed bovine pericardial collar was sutured circumferentially from the annulus to the atrial wall using running 4-0 polypropylene for reinforcement. The postoperative course was uneventful and the patient remained asymptomatic.
Conclusions: The present case suggests that mitral valve replacement using a collar-reinforced mitral prosthesis may be an effective technique for severe mitral annular calcification. To avoid catastrophic complications associated with treatment for severely calcified annulus, it is crucial to make a prudent preoperative decision regarding the surgical strategy under circumstances where conventional mitral valve replacement is impossible.
Shigellosis: A Potential Missed Diarrhea among Patients Attending Kashere General Hospital
Authors: Dahiru Musa , Hassan A. , Aliyu Habiba U. 
Published: April 2023

Abstract
Background Diarrheal diseases are a major public health concern globally and the leading cause of morbidity and mortality among children in Africa and most other developing countries. Children between the ages of five and below are particularly at high risk of diarrheal diseases. Rural areas in Nigeria are particularly vulnerable to diarrheal diseases due to poor sanitation, unsafe drinking water, poor hygiene practices, and low immunization coverage, among others. In view of these, the research wishes to isolate and identify common diarrhea-causing bacteria from stool samples of patients attending Kashere General Hospital as a rural community.Materials and Methods Stool samples were collected from the attending Hospital and subjected to microbiologically standard procedures for the identification of the targeted bacteria.Results The distribution of age groups of samples collected was high (39.9%) for 0–59 months and 60–10 years (28.6%), across genders, with seven different groups of bacteria identified in male and female samples: E. coli spp., Shigella spp., Salmonella typhi, Salmonella paratyphi, and Campylobacter spp., Vibrios spp., and E. coli O157:H7, Campylobacter spp., was not isolated from any female sample. There was a significant difference in the number of Shigella spp. isolates from Samonella paratyphi and Salmonella typhi, Vibrio spp., and E. coli.Conclusion There is an alarming rate of isolation of Shigella among children under five years of age that cuts across genders in the first ever reported prevalence in the study area. This is important in terms of a strategic public health approach to address factors supporting the infection chain for the transmission of diarrheal pathogens in the area. However, further studies may be needed to confirm these observations and identify additional risk factors associated with bacterial infections in this population.
The Production of Cellulose Acetate From Kapok Cellulose With Different Acetylation Conditions
Authors: POON JIA JUN , CHEOK CHOON YOONG , TAN MEI CHING 
Published: April 2023

Abstract
Cellulose acetate (CA) was produced from cellulose through activation and acetylation reactions. This study focused on using kapok cellulose as the starting material in converting cellulose into CA as the final reaction product. In the production of CA from kapok cellulose, acetic acid was used to activate the cellulose before acetylating it with acetic anhydride and sulfuric acid. A total of 27 experiments with varying acetic acid amounts (17.5, 20, 22.5 mL), acetic anhydride (5, 7.5, 10 mL) and acetylation reaction time (30, 45, 60 min) were designed to evaluate CA formation. Fourier transform infrared spectroscopy was used to evaluate the CA formation by identifying its present functional group. The analysis showed that CA produced from 20 mL acetic acid, 10 mL acetic anhydride and 60 min acetylation reaction time as the highest peak intensities of the three major functional groups (C = O, C-H, and C-O). This indicated that CA formed from this condition has the strongest acetyl bonding among the conditions. Scanning electron microscopy evidenced the CA formation, yet they varied with different amounts of acetic acid, acetic anhydride and acetylation reaction time.
Ladybird beetle trails affect population growth of the brown citrus aphid, Toxoptera citricida
Authors: SEO MEEJA 
Published: April 2023

Abstract
The brown citrus aphid, Toxoptera citricida is a pest of citrus because it efficiently transmits severe strains of Citrus tristeza virus (CTV). Little is known about the behavioral interactions of T. citricida with trail chemicals of its ladybeetle predators, Hippodamia convergens. We investigated the host settling behavior and population growth rate of T. citricida in response to trail chemicals deposited by the ladybeetle, Hippodamia convergens. In addition, the repellency of the ladybeetle to their conspecifics trail was evaluated in laboratory olfactometer assays. We found that host settling behavior of T. citricida on plant surfaces was not affected 5 or 24 hr after ladybeetle trails were deposited as compared with untreated controls. However, the population growth rate of T. citricida was significantly reduced on plants containing ladybeetle trails as compared with control plant surfaces 3, 7, and 10 days after treatment. Similarly, the population growth rate of T. citricida was reduced on plant surfaces treated with H. convergens trail extract 10 and 15 day after treatment as compared with on control seedlings. Behavioral assays revealed H. convergens was not repelled by the trail extracts of conspecifics. We discuss potential practical application of ladybird trails for managing T. citricida without negative effects on ladybird beetle behavioral response.
Influence of the Registration Error on the Implantation Depth with A Fully Guided Template
Authors: Li Shufen , Wei Bin 
Published: April 2023

Abstract
Objective: To evaluate the influence of the registration error between the digital dental model and cone-beam computed tomography (CBCT) images on the implantation depth with a fully guided template.
Methods: In this research, 10 isolated dentition models and 10 resin dentition models were compared, and their optical scanning data and CBCT data were imported into virtual planning software for automatic registration. Subsequently, the virtual implant position was planned, and the implant neck platform was designed to be flushed to the preset plane of the models (“bone plane”). A fully guided template was then designed and printed. Implants were placed under template guidance in vitro, and the depth deviation of the placed implant from its planned position was measured using a micrometer. Statistical analysis was performed using SPSS 23.0, and P<0.05 was considered to be statistically significant.
Results: In the test group, the contour of the crown reconstructed by CBCT was larger than that of the digital scans, the occlusal surface of isolated dentition models’ CBCT was higher than that of the digital scans after the automatic registration. The contour of the crown reconstructed by CBCT in the control group was basically the same as that of the digital scans, the crown reconstructed by resin dentition models’ CBCT was basically aligned with the crown of the digital scans after automatic registration. The research showed that the postoperative implant neck platform of the two groups was higher than the preset plane (“bone plane”). The implantation depth of the postoperative implant was evaluated, the implantation depth deviation values of the isolated dentition and resin dentition groups were 0.559±0.059 and 0.183±0.019 mm, respectively, and the difference was statistically significant (P<0.05).
Conclusions: Registration error leads to insufficient implantation depth under the guidance of the fully guided template. The source of registration error may be preoperative data and registration algorithm.
Molecules with antimicrobial activity in the secretion of the arthrodial membrane gland of a harvester (Arachnida, Opiliones)
Authors: SILVA Norton Felipe dos Santos , WILLEMART Rodrigo Hirata , SILVA José Roberto Machado Cunha , Junior Pedro Ismael Silva 
Published: April 2023

Abstract

Because of the exoskeleton, arthropods must have flexible areas in order to be able to move. Such regions are called arthrodial membranes and are particularly vulnerable to bacteria and fungi. Here we analyzed the secretion in the glands underneath it in a Neotropical harvester (Arachnida, Opiliones) and tested whether it has antiseptical properties. We punctured the membrane, collected and diluted the secretion and quantified proteins and peptides in a spectrophotometer. We also fractionated and analyzed the samples in a Reversed phase - High Performance Liquid Chromatography (RP-HPLC) and then incubated treated fractions and determined growth inhibition by the measure of absorbance. The secretions resulted in 42 fractions, among which two had activity, against Gram positive bacteria Micrococcus luteus and against yeast Candida albicans. The low concentrations in which the secretions were active are relevant from the biotechnological point of view. For the animals, the secretions possibly prevent infections including when they are attacked in these regions by predators that pick that spot to bite.
Effectiveness of Pleurodesis for Postoperative Air Leaks after Lung Resection
Authors: Tsubokawa Norifumi , Mimae Takahiro , Ito Risa , Sasai Ryuma , Hirano Kouichi , Kamigaichi Atsushi , Kawamoto Nobutaka , Miyata Yoshihiro , Okada Morihito 
Published: April 2023

Abstract
Background: Pleurodesis is often performed for air leaks; however, the ideal materials and timing of the procedure remain controversial. We investigated the efficacy of pleurodesis using different materials and timing.
Methods: We retrospectively reviewed 913 consecutive patients who underwent segmentectomy or lobectomy for non-small cell lung cancer between 2014 and 2021. Pleurodesis efficacy was assessed on the day of chest tube removal.
Results: Eighty-six patients underwent pleurodesis for postoperative air leaks. Pleurodesis was performed on a median of postoperative day (POD) 5. Talc was the most frequently used material (n=52), followed by autologous blood patches (n=20), OK-432 (n=12), and others (n=2). No difference existed in the number of days from initial pleurodesis to chest tube removal among the three groups (talc, 3 days; autologous blood patch, 3 days; OK-432, 2 days; P=0.55). No difference in patient background, except for sex, was observed between patients who underwent pleurodesis within 4 PODs and those who underwent pleurodesis on POD 5 or later. Drainage time was significantly shorter in patients who underwent pleurodesis within 4 PODs (median, 7 vs. 9 days; P=0.004).
Conclusions: The efficacies of autologous blood patch, talc, and OK-432 were nearly equivalent. Early postoperative pleurodesis can shorten drainage time.
Experience of One Medical Center in the United States With Ultrasound-guided Synovial Biopsies in the Assessment of Inflammatory Arthritis
Authors: Lim Khin Sandar , Ben-Artzi Ami , Forbess Lindsy , DiMundo Natalie , Ishimori Mariko 
Published: April 2023

Abstract

Objective Ultrasound-guided synovial biopsy (USGSB) is a simple, rapid procedure that is well-tolerated by patients and successfully collects samples of synovial tissue from both small and large joints. This retrospective analysis of 25 clinical cases examines its utility in the assessment of inflammatory arthritis.Methods USGSB can be performed as an outpatient procedure using a local anesthetic and a biopsy needle of appropriate gauge (range 14–18 gauge, depending on the size of the joint) introduced under direct ultrasound guidance.Results This procedure provides assessment of synovial thickness in grayscale and synovial vascularity with Doppler signal for biopsy site selection with an estimated 80% success rate. The histological findings of subsequent arthroscopic or surgical synovial biopsies were congruent with those of US-guided synovial biopsies, showing comparable results in large, medium, and small joints.Conclusion In recent years, ultrasound procedures have been increasingly used in routine rheumatology outpatient practice. Given its clinical feasibility, the low rate of complications or adverse events, and its diagnostic value and impact on treatment decisions, USGSB should be a more widely applied practice in the United States.
Neural Computing of Slurry Erosion of Al2O3-13TiO2 Thermal Spray HVOF Coating for Mining Pump
Authors: Singh Jashanpreet , Vasudev Hitesh , Singh Jasgurpreet 
Published: April 2023

Abstract

The purpose of this research was to investigate the cause of a slurry erosion failure in an Al2O3-13TiO2 high-velocity oxygen-fuel coating for SS316L steel. Sand particles served as the erodent in this investigation of wear and erosion. The slurry erosion of SS and HVOF Al2O3-13TiO2 coating was shown to be significantly affected by speed of particles, concentration (wt.%), and exposure period. All characteristics, excluding impingement angle, contribute to faster wear on the parent material, both bare and coated AISI 316L. Coatings were used to slow down the pace at which the source material deteriorated. As a whole, the Al2O3-13TiO2 HVOF coating enhanced the AISI 316L's resistance to erosion by 13.73 percent.
Stability of Standardized Uptake Values of Quantitative Bone SPECT for the Jawbone Lesions: A Single-center Cross-sectional Study
Authors: Hata Hironobu , Shimomura Satoshi , Imamachi Kenji , Sato Jun , Asaka Takuya , Hirata Kenji , Funayama Kyousuke , Mori Yoichi , Matsuzaka Masashi , Nanbu Toshikazu , Kitagawa Yoshimasa 
Published: April 2023

Abstract
Background The long waiting time for bone uptake after radiopharmaceutical injection in bone scintigraphy is a burden for patients with poor health. Thus, we aimed to investigate the equivalence between maximum standardized uptake values (SUVmax) for imaging with 2- and 3-h uptake times.Methods Thirty patients with jaw osteomyelitis or medication-related osteonecrosis of the jaw who underwent single-photon emission computed tomography (SPECT) twice in the same day were enrolled. The SUVmax for the normal parietal bones and jawbone lesion was calculated using a quantitative analysis software, and values for 2- and 3-h uptake times were compared. Bland–Altman plots were used to determine the limits of agreement (LOAs) for the difference in SUVmax between 2- and 3-h uptake times for the parietal bones and jawbone lesion.Results The LOA ranged from − 0.33 to 0.25 in the parietal bones and %LOA ranged from − 9.8–17.3% in the jawbone lesion, proving high equivalence. The SUVmax showed no clinical differences between 2- and 3-h uptake times for technetium-99m hydroxymethylene diphosphonate SPECT of the jawbone.Conclusions This is the first study to demonstrate that the uptake time in jawbone SPECT can be reduced to only 2 h, justifying a 2–3-h uptake time margin.
Adsorption of Brilliant Blue Dye on Biochar from the Macroalgae Cladophora glomerata
Authors: Areej Azwa , Mumtaz Maimoona , Aman Fariha , BADSHAH SYED , Khan Asfar , Emwas Abdul-Hamid , Jaremko Mauisz 
Published: April 2023

Abstract
Here we describe the utilization of freshwater macroalgae Cladophora glomerata (C. glomerata) biochar at comparatively low cost for the removal of brilliant blue dye (BBD) from aqueous solutions. The macroalgae was successfully converted into biochar through thermal pyrolysis. The chemical and morphological nature of the biosorbent was analyzed through Fourier Transform Infrared (FTIR) spectroscopy, scanning electron microscopy and thermogravimetric analysis. The effect of pH, initial concentration and adsorbent dosage were investigated. The removal of brilliant blue increased linearly with increasing adsorbent dose, concentration, and contact duration. Optimized conditions for adsorption were pH 4, contact time of 150 minutes, and adsorbent dosage of 3.0 g. Langmuir isotherm best explained the adsorption data and required parameters and appropriate constants were calculated. These results suggest that C. glomerata may remove dye from aqueous solutions.
Clinical Prediction Models for Peripherally Inserted Central Catheter-Related Venous Thrombosis: A Systematic Review and Meta-analysis
Authors: Wang Fan , Li Hui , Xu Min , Zhou Ying , Zhang Lingling , Hao Zhaohua 
Published: April 2023

Abstract
Background PICC-related venous thrombosis (PICC-RVT) is one of the most serious complications of PICC. Clinical prediction models (CPMs) are statistical models that incorporate a number of variables and forecast the likelihood of outcome events using a few risk factors.Objective To analyze the reported PICC-RVT risk prediction models' bias risks and to conduct out a meta-analysis.Methods PICC-RVT research reports were available in PubMed, Web of Science, CINAHL, Scopus, ProQuest, and Cochrane Library. Research data from articles fulfilling eligibility conditions were collected and analyzed using the Systematic Reviews of Prediction Modeling Studies checklist. The included studies were assessed for bias using PROBAST. A meta-analysis of the C statistics of the included studies was performed using R software.Results A total of 714 articles were acquired from the electronic database; 5 of these were included in our study. All models were evaluated to have "low risk" in the clinical application domain using PROBAST evaluation. Regarding bias risk, three models were labeled as "high risk," one as "uncertain," and one as "low risk." The C-statistics for each model, which were in the range of 0.636 to 0.802.Conclusions The model's discrimination and prediction are acceptable, and most of the models in our review lack external validation. Our findings suggest reporting predictive model creation or validation utilizing TRIPOD criteria.
Immediate Impacts of Online Service-Learning Engagements on Partner Communities: A Mixed Methods Approach
Authors: Abenir Mark Anthony , Lopez Leslie A. , Mendoza Lara Katrina T. , Panlilio Eugene G. 
Published: April 2023

Abstract

This study investigates the immediate impacts of online Service-Learning (SL) on partner communities in the Philippines, addressing a gap in existing literature focused on face-to-face (f2f) SL engagements. Using a mixed-method convergent design, it assesses benefits, drawbacks, and factors influencing the effectiveness of online SL. Data was collected from 66 key contacts across 36 community partner organizations (CPOs) of a comprehensive university using a survey questionnaire and 11 individual interviews. Results show that online SL projects generally support CPOs' missions, enhance resources, foster new knowledge, and yield positive outcomes. However, qualitative analysis reveals areas for improvement to make online SL more engaging and responsive to community needs. This research emphasizes the importance of examining the immediate impact of online SL, guiding best practices for implementation, and fostering effective online SL collaborations that can be adapted across various countries with similar contexts.
Determination of Paraquat and Diquat in Potato by Liquid Chromatography/Tandem Mass Spectrometer
Authors: Chamkasem Narong , Morris Cynthia , Harmon Tiffany 
Published: April 2023

A high-throughput liquid chromatography/tandem mass spectrometry (LC-MS/MS) method was developed for the determination of paraquat and diquat in potatoes using a reversed-phase with weak anion-exchange and cation-exchange mixed-mode Acclaim™ Trinity Q1 column. Five grams of sample was shaken with fifteen milliliters of 1:1 MeOH: 0.1 N HCl for 10 min at room temperature and heated for 15 min at 80°C. After centrifugation, the supernatant was passed through an Oasis HLB SPE to retain suspended particulates and non-polar interferences. The sample was directly injected and analyzed for 10 min by LC-MS/MS with no sample concentration. Two multiple reaction monitoring (MRM) channels were monitored in the method for each target compound to achieve true positive identification. Two internal standards corresponding to each analyte were used to counter matrix suppression effect. Linearity of the detector response with a minimum coefficient of determination (r2) of more than 0.997 was demonstrated in the range from 2 to 250 ng/mL for each analyte using matrix-matched standard. The average recovery for all analytes at 10, 25, 100, and 500 ng/g (n$=$5) are between 87-106% with a relative standard deviation of less than 12%.https://doi.org/10.21423/jrs-v05n01p001 (DOI assigned 4/17/2019)
Evaluation of Whole Genome Sequencing and an Insertion Site Characterization Method for Molecular Characterization of GM Maize
Authors: Cade Rebecca , Burgin Kristina , Schilling Kelly , Lee Tae-Jin , Ngam Peter , Devitt Nico , Fajardo Diego 
Published: April 2023

Molecular characterization of genetically modified (GM) crops has traditionally been accomplished through a combination of Southern blot, polymerase chain reaction (PCR), and Sanger sequencing analyses. This characterization generates critical information that is used in downstream safety assessment of GM crops and development of GM detection methods.Next generation sequencing (NGS) technologies, such as whole genome sequencing (WGS), have shown the potential to replace some or all of these techniques for molecular characterization of GM crops. This paper describes the characterization of two GM maize events using NGS for WGS in combination with an insertion site characterization (ISC) method. The sensitivity of the method is also compared to that of Southern blot analysis through detection of small insert fragments. Our results demonstrate that WGS is at least as sensitive as Southern blot analysis for determining the insert copy number, presence or absence unintended insertions, and for characterization of small fragment insertions.These results support the conclusion that WGS along with an appropriate insertion site characterization method are a suitable alternative to Southern blot analyses for molecular characterization of GM maize.https://doi.org/10.21423/jrs-v06n01p001 (DOI assigned 1/24/2019)