bluuebunny/crossref_metadata_2025_split huggingface dataset:
Development and Optimization of a High-Frequency Axial-Torsional Composite Percussion Drilling Tool for Enhanced Impact Technology
Authors: Yang Haili , Yang Yinglin , Huang YueXiang , Zhang Hengjing , Xie Liangliang 
Published: October 2023

Summary
A high-frequency axial-torsional composite percussion drilling tool is designed to enhance the drilling efficiency by delivering high-frequency axial and torsional impact loads directly to the drill bit. The impact performance and influencing factors of the tool are analyzed via the large eddy simulation method, and a scaled-down experiment on the pulse nozzle structure is conducted. The analysis reveals that after design optimization, the tool achieves high-frequency axial and torsional impacts of 421 and 284 Hz, respectively, at an inlet flow rate of 30 kg/s. Additionally, the unilateral amplitudes of the axial and torsional impact loads reach 1511 N and 19.3 N·m, respectively, with a pressure drop of 2.998 MPa. Furthermore, the similarity degree between the parameters derived from the experiment and numerical analysis is close to or exceeds 70%, demonstrating the reliability and precision of the numerical analysis results. Overall, this study sets a baseline for high-frequency impact technology, paving the way for further advancements in drilling efficiency.
Secured Transportation and Distribution of Examination Papers Using IOT and AI
Authors: Jaiman Akash , Sharma Aniva , Jaiman Vikas , Porwal Naveen 
Published: October 2023

Abstract

In today’s scenario of India most of the youth is preparing for some competitive exam. If we think behind 15–20 years the number of candidates appearing for competitive exams were in thousands but as the population is increasing exponentially in India day by day the number of candidates is increasing in lacks. We can observe by daily newspapers that most of the competitive exams are facing paper leak problems. Although online examination systems are more effective and secure as compared to offline examination systems because it’s not easy to open the question paper before the time starts. On the other hand there are also various consequences where the examination process can be hacked online. But the main issue with online examination process is to lack of resources to conduct parallel examination of millions of candidates, lack of techno enabled exam centers in small cities etc. Our focus is to propose a system in which offline examination can be conducted at most of the govt. and private centers in metro cities as well as small techno backward cities with reduced possibility to leak the paper before commencement of examination.
Clinical description and epigenetic profiling of a new Danish OCD case-control cohort
Authors: Staunstrup Nicklas Heine , Starnawska Anna , Bybjerg-Grauholm Jonas , Nissen Judith Becker 
Published: October 2023

Abstract
Background
Obsessive compulsive disorder (OCD) is a frequent and severe neuropsychiatric disorder, with cardinal features being obsessions and compulsions. The complex nature of OCD has complicated efforts to identify its causal mechanisms, however, genetic and epigenetic factors have been proposed to contribute to the pathophysiology of the disorder. The aim of the study was to provide a clinical description of a novel OCD case-control cohort created to study epigenetic risk factors and lifetime epigenetic trajectories associated with OCD.
Methods
The cohort consisted of 138 OCD cases and 151 control ethnical Danish individuals. Mental health status for all study participants was evaluated according to selected parts of the K-SADS-PL diagnostic instrument. Additionally, baseline OCD symptoms, Children’s Yale Brown Obsessive Compulsive Scale (CYBOCS) scores, insight, avoidance behavior, doubt, responsibility, sensitivity, social aspects, school functioning, medication, and family occurrence of psychiatric and somatic disorders information was collected for OCD cases. Blood genome-wide DNA methylation (DNAm) levels were quantified with Illumina’s EPIC methylation array at birth and at adolescents for all study participants.
Results
This work provides a clinical description of the cohort, and the first results from OCD epigenome-wide association studies performed at two developmental stages: neonatal and adolescent. We have identified several DMRs to be associated with OCD diagnosis (Šidák-adjusted DMR p-value < 0.05), both at birth and adolescence, including three DMRs overlapping across the two developmental stages. The DNAm change in the overlapping DMRs was observed to be in the same direction and two of the findings (ZFP57, PIWIL1) had previously been associated with OCD and treatment response. Furthermore, the third DMR associated with OCD at both stages was annotated to POU6F2, a gene previously suggested to be involved in schizophrenia and autism development.
Conclusions
Overall, our data suggests that differences in DNAm levels in genes implicated in mental illness are associated with OCD diagnosis, and that some of these epigenetic signals can be detected both at birth and at adolescence. Future studies using the same cohort will aim at investigating longitudinal changes in epigenomic trajectories associated with the disorder and its treatment outcomes.
Global warming short-term trends due to population growth providing feedback estimates: A CO2 doubling temperature opposing rate model
Authors: Feinberg Alec 
Published: October 2023

Abstract
This paper using simplistic methods, estimates feedback values from normalized population and energy consumption correlated short-term trends to global warming. As well, CO2 doubling temperature, and anthropogenic heat release (AHR) dynamic short-term trends estimates are provided. Estimates are made from 1975 to 2021. The following normalized rates were found: 0.0204/year for global warming, 0.0209/year for CO2 increases, 0.0107/year for population growth, and 0.0124/year for energy consumption. These rates indicate that CO2 and global warming are increasing by a factor of 1.9 times faster than population growth, and 1.65 times faster than energy consumption. Short-term trend analysis indicates that by 2047, the feedback amplification may reach a value of 2.3-2.4. This is estimated to be equivalent to an average feedback value of 3.3Wm-2/K. Results also finds that the energy consumption rate is slightly higher than the population growth rate by a factor of 1.159. Energy consumption leading to AHR estimates on global warming are also provided for 2021 and 2050.
A proposed opposing rate model indicates that the CO2 doubling temperature dynamic short-term trend may have reduced over time, while feedback amplification has increased proportionately. Trend analysis also suggests a feedback tipping point in this period was likely not present.
Estimates indicate that population growth can reach 10 billion people by 2047. Results then show yearly global warming dynamic increases could be reduced by about half under a worldwide zero population growth scenario.
This analysis is performed without sophisticated computer modeling and can help climatologists provide initial approximations and policymakers make more informed decisions with improved confidence regarding future population growth and energy consumption global warming issues.
Long-term longitudinal changes in astigmatism and their effect on refraction development in school-age children in southern China
Authors: Chen Wuhe , Qin Zhuoer , Zheng Qianlan , Yu Xinping , Chen Jie 
Published: October 2023

Abstract
Objectives: To investigate longitudinal changes in astigmatism in school-age children and to explore the effect of astigmatism on refraction development.
Methods: The medical records of patients with long-term follow-up data from 2006 to 2018 were retrospectively reviewed. Patients who were 6-10 years old at initial visit and 16 years old at last assessment were selected for analysis. The enrolled patients had a cylinder refraction of 0.75 or greater. Astigmatism was analyzed in clinical notation and vector notation(J0, J45). The related factors of changes in astigmatism and sphericalequivalent per year and the interaction between the two were analyzed.
Results: A total of 3101 patients(median age 9 years at initial visit) were followed up for an average of 7 years(IQR, 6–8 years). The mean cylinder refraction at initial examination was 2.11±1.18Dand decreased to 2.08±1.18Dat 16 years old, which was statistically(p=0.034) but not clinically significant. The Oblique astigmatism(J45, 0.005D/y) increased and with-the-rule astigmatism(J0, -0.008D/y) decreased. A lower magnitude of astigmatism and more myopia of the SE at the initial visit were associated with a greater increase in astigmatism magnitude(p<0.001). A higher magnitude of initial astigmatism was associated with less progression in spherical equivalent(p<0.001).
Conclusion: In southern Chinese children, the mean cylinder power decreased slightly from 6-10 to 16 years of age, accompanied by a progression of the oblique axis and a reduction of with-the-rule axis. The presence of myopia at baseline was a risk factor for astigmatism progression. However, high astigmatism seems to prevent reductions in the spherical equivalent.
Diabetes-Related Risk Factors and Survival among individuals with Type 2 Diabetes and Breast, Lung, Colorectal, or Prostate Cancer
Authors: Laurberg Tinne , Witte Daniel Rinse , Gudbjörnsdottir Soffia , Eliasson Björn , Bjerg Lasse 
Published: October 2023

Abstract

Premature death in diabetes is increasingly caused by cancer. The objectives were to estimate the excess mortality when individuals with type 2 diabetes(T2D) were diagnosed with cancer, and to examine the impact of modifiable diabetes-related risk factors. This longitudinal nationwide cohort study included individuals with T2D registered in the Swedish National Diabetes Register between 1998–2019. Poisson models were used to estimate mortality as a function of time-updated risk-factors, adjusted for sex, age, diabetes duration, marital status, country of birth, BMI, blood pressure, lipids, albuminuria, smoking, and physical activity. We included 690,539 individuals with T2D and during 4,787,326 person-years of follow-up 179,627 individuals died. Overall, the all-cause mortality rate ratio was 3.75 [95%confidence interval(CI):3.69–3.81] for individuals with T2D and cancer compared to those remaining free of cancer. The most marked risk factors associated to mortality among individuals with T2D and cancer were low physical activity, 1.59(1.57–1.61) and smoking, 2.15(2.08–2.22), whereas HbA1c, lipids, hypertension, and BMI had no/weak associations with survival. In a future with more patients with comorbid T2D and cancer diagnoses, these results suggest that smoking and physical activity might be the two most salient modifiable risk factors for mortality in people with type 2 diabetes and cancer.
National threat speaks louder for words than for actions: Examining Chinese public’s multi-level climate risk perceptions and their attitudes/behaviors
Authors: Jia Hepeng , Pan Yeheng , Xie Yu 
Published: October 2023

Abstract
High climate risk perception drives positive climate attitudes. However, the Chinese public has perceived low climate-related threats but still had high recognition of anthropological climate change and strong support for climate policies. To solve this puzzle, this study extended the theory of multi-level risk perceptions to investigate how personal, societal, and national levels of risk perceptions may have influenced people’s climate attitudes and behavior willingness differently. Based on a national survey, this study found that a strong statism inclination shapes respondents’ climate attitudes and intentions for climate-friendly behaviors, albeit in different ways. The respondents prioritized national interests when thinking of climate change, whereas personal benefits gained importance when respondents considered taking action. This study provides crucial clues to understand better the public mindset about climate change in the world’s biggest emitter besides theoretical implications.
Reducing health care associated Infections in a Neonatal Intensive Care Unit through Quality Improvement approach, Tibebe-Ghion Specialized Teaching Hospital, Bahir Dar University, Bahir Dar, Ethiopia – Mirror of the Health Care Quality
Authors: Gelaw Tesfaye , Gessesse Alamirew , Yehuala Amare , Belay yiheyis , Tilahun Shitahun , Mengste Senay , Zeleke Zebenay , Getahun Ibrahim , Azeze Mensur , Berihun Aemiro , Akalu Bezza , Muluye Behayilu , Demil Minichil , Muhammed Sefina 
Published: October 2023

Abstract
Background: Health-care-associated-infections are infections occurring while receiving health care, that first appear 48hours or more after hospital admission, or within 30days of receiving health care.
Objective: Measure the impact of quality improvement interventions on health-care-associated-infection in the Neonatal Unit of Tibebe – Ghion Hospital.
Method: We conducted pre – post Interventional Study between February 01, 2022 and May 01, 2023. Multifaced interventions; implementing recommended minimum NICU standards, re-enforcing WHO IPC Guideline and Hand Hygiene practice, were introduced. NICU Standards achieved, Hand hygiene compliance, WHO IPC guideline Implementation and Health-care-associated-infections were surveyed. Comparison of Health-Care-associated-infection rates before and after the intervention was conducted.
Results: Recommended NICU Design standards status was improved from 8% pre-intervention to 79% and 79.5% during and post-intervention respectively. Hand Hygiene compliance in the unit was 10% pre-intervention and improved to 79.5% and 81.3% during and post-intervention respectively. The WHO IPC implementation status was 15% pre-intervention and maximized to 58% both during and post-intervention. These package of interventions were associated with reduction of Health-Care-associated-Infections. (X2 (Degree of Freedom = 1, Sample Size = 432) = 8.2, p = .004.)
Conclusions: Infection Prevention practice, Hand Hygiene Compliance and improving NICU Design standards were associated with decrease in health-care-associated-infection rates.
Posterior Fixation of Gastric Tube With Fibrin Sealant in Laparoscopic Sleeve Gastrectomy: a Promising Method to Prevent Revision Surgeries
Authors: Kizilkaya Mehmet Celal , Gokay Rıdvan , Mutlu Arda Ulas , Sonmez Suleyman , Yılmaz Serhan , Kocatas Ali , Saracoglu Can , Aytac Erman 
Published: October 2023

Abstract
Background
We aim to assess the effects of gastric posterior fixation with fibrin sealant in laparoscopic sleeve gastrectomy in aspects of 12th -month body mass index and gastric volume.
Methods
The patients who underwent laparoscopic sleeve gastrectomy between January 2019 – February 2021 were divided into two groups preoperatively. The first 75 patients were appointed to the posterior fixation group, and the second 75 were to the control group. Changes in gastric volume and body mass index were assessed in the postoperative 12th month.
Results
There were 110 patients in the final analysis. Fifty-four patients had posterior fixation, and 56 had only laparoscopic sleeve gastrectomy. The posterior fixation group was superior in terms of total weight loss rate (39.1% vs. 34.5%, p < 0.001) and less gastric volume increase rate (39.8% vs. 164.7%, p < 0.001) in the postoperative 12th -month.
Conclusion
Our study suggests that posterior fixation with fibrin sealant in laparoscopic sleeve gastrectomy is a promising method for preventing weight regain and creating a need for revision surgery.
An Efficient Algorithm with Fast Convergence Rate for Sparse Graph Signal Reconstruction
Authors: Cao Yuting , Jiang Xue-Qin , Wang Jian , Zhou Shubo , Hou Xinxin 
Published: October 2023

Abstract
In this paper, we consider the graph signals are sparse in the graph Fourier domain and propose an iterative threshold compressed sensing reconstruction (ITCSR) algorithm to reconstruct sparse graph signals in the graph Fourier domain. The proposed ITCSR algorithm derives from the well-known compressed sensing (CS) by considering a threshold for sparsity-promoting reconstruction of the under- lying graph signals. The proposed ITCSR algorithm enhances the performance of sparse graph signal reconstruction by introducing a threshold function to determine an suitable threshold. Furthermore, we demonstrate that the suitable parameters for the threshold can be automatically determined by leveraging the sparrow search algorithm (SSA). Morever, we analytically prove the convergence property of the proposed ITCSR algorithm. In the experimental, numerical tests with synthetic as well as 3D point cloud data demonstrate the merits of the proposed ITCSR algorithm relative to the baseline algorithms.
Growth, leaf anatomy, and photosynthesis of cotton ( Gossypium hirsutum L.) seedlings in response to four light-emitting diodes and high pressure sodium lamp
Authors: Zhang Yichi , Liao Baopeng , Li Fangjun , Eneji A. Egrinya , Du Mingwei , Tian Xiaoli 
Published: October 2023

Abstract
Light is a critical factor of plant growth and development, particularly in controlled environments. Light-emitting diodes (LEDs) have become a reliable alternative to conventional high pressure sodium (HSP) lamps because they are more efficient and versatile light sources. In contrast to well-known specialized LED light spectrums for vegetables, the appropriate LED lights for crops such as cotton remain unknown. In this growth chamber study, we selected and compared four LED lights with varying percentages (26.44-68.68%) of red light (R, 600-700 nm), combined with other lights, for their effects on growth, leaf anatomy and photosynthesis of cotton seedlings, using HSP as a control. The total photosynthetic photon flux density (PPFD) was 215±2 μ mol/m2·s for all LEDs and HSP. The results showed significant differences in all tested parameters among lights, and the percentage of far red (FR, 701-780 nm) within the range of 3.03-11.86% was positively correlated with plant growth (characterized by leaf number and area, plant height and diameter, and total biomass), palisade layer thickness, photosynthesis rate (Pn) and stomatal conductance (Gs). The ratio of R/FR (4.445-11.497) negatively influenced the growth of cotton seedlings, and blue light (B) suppressed stem elongation but increased palisade cell length, chlorophyll content and Pn. The LED 2 was superior to other LED lights and HSP. It had the highest ratio of FR within the total PPFD (11.86%) and the lowest ratio of R/FR (4.445); LED 2 may therefore be used to replace HPS under controlled environments for the study of cotton at the seedling stage.
Temperature and stress field analysis of 7075 aluminum alloy laser-MIG composite welding
Authors: Zhang Defen , Ran Qingzheng , Zhu P. , Jiang P.G. , Lv Y. , Tang S. , Chen X.W. , Xie W.L. 
Published: October 2023

Abstract
In this paper, Simufact.Welding simulation software is used to simulate the temperature field and stress field of 6 mm thick 7075 aluminum alloy laser-MIG composite welding, and the influence of different welding process parameters on the temperature field and stress field is explored for simulation and analysis. By using welding simulation software, a numerical simulation model is established, and reasonable welding process parameters are selected to analyze the simulation results. The influence law of welding parameters on temperature field and stress field of laser-MIG composite welding of 7075 aluminum alloy was explored, plotting the temperature field distribution of the weldment during heating and cooling, and analyzing the temperature change of the molten pool and the nearby area in each time period. The thermal cycle curves of each point on the workpiece were recorded and compared with the simulation results to verify the accuracy of the temperature field simulation. A cloud diagram of the dynamic change characteristics of stress in the workpiece during welding heating and cooling is drawn to analyze the influence of welding process parameters on the residual stress in different directions.
Acute cardiac complications in patients admitted with Community-acquired pneumonia in an Internal Medicine ward
Authors: Farinha Inês , Cunha Alexandra , Rodrigues Ricardo , Saraiva André , Reigota Rita , Gonçalves João , Rua João , Gomes Bráulio , Melo João , Costa Filipa 
Published: October 2023

Abstract
BACKGROUNG: Community-acquired pneumonia (CAP) is one of the most frequent causes of hospital admission and it is associated with acute cardiac events. The goal was to assess the incidence, risk factors and impact of acute cardiac events on hospital stay and mortality in patients hospitalized due to CAP in 2018. METHODS: Cardiac complications were defined as: new or worsening heart failure, arrhythmia, or myocardial infarction. Statistical analysis was performed using SPSS. Factors with a univariate significance level of p < 0.10 were included in a multivariate regression model and odds ratios (OR) with 95% confidence intervals (CI) were calculated. P < 0.05 was considered statistically significant. RESULTS: 270 patients were included (median age: 84y). The most common comorbidities were arterial hypertension (76.3%) and chronic heart failure (40.4%). Forty-three percent of patients developed at least one cardiac complication. Mean CURB-65 score was 2.65 (SD 1.05) and 2.33 (SD 1.16) for patients with and without cardiac events, respectively. Mean duration of hospital stay was significantly higher in patients with cardiac complications (p = 0.01). There were no significant differences in hospital mortality. Factors included in the multivariate regression were previous history of heart failure, arterial hypertension or atrial fibrillation, blood urea nitrogen > 7mmol/L, age ≥ 65y, arterial pH < 7.35 and arterial pCO2 > 45mmHg. Previous history of heart failure was significantly associated with the incidence of acute cardiac events (OR 2.7; 95%CI 1.5–4.7). CONCLUSIONS: Cardiac events are frequent in CAP hospitalized patients and significantly increase the duration of hospital stay. CURB-65 score and previous history of heart failure are associated with this outcome.