bluuebunny/crossref_metadata_2025_split huggingface dataset:
Design of a modular exhibition structure with additive manufacturing of eco-sustainable materials
Authors: Invernizzi Stefano , Bertetto Amedeo Manuello , Ciaccio Federico , Nicola Paolo 
Published: May 2021

Abstract
In this paper the mechanical characteristics of an innovative bioplastic material, the HBP® -HempBioPlastic® filament, is investigated. HBP® was recently patented by an Italian company Kanésis that focused its activity on nature-derived materials. The filaments are the upshot of an original process allowing to reuse the surplus of the agricultural supply chains and transform it into new sustainable materials. At first, the 3D printed HBP® samples were tested in tensile tests according to the ASTMD638 standard and monitored in term of deformations by the Digital Image Correlation techniques (DIC) in order to evaluate the stress-strain behavior of different HBP® textures under loading. In addition, using the HBP® and the results coming from the experimental campaign, the design of an exhibition pavilion was proposed. The pavilion was modelled starting from the geometric construction of the fullerene. The supporting modular structure is combined by HBP® modular elements, that can be produced by 3D printing or moulding. Finally, in order to demonstrate the feasibility of the proposed pavilion, a linear finite element analysis is presented on the base of the experimentally determined mechanical properties of HBP® elements, under the effects of wind and seismic environmental actions.
Form-finding of pierced vaults and digital fabrication of scaled prototype
Authors: Bertetto Amedeo Manuello , Riberi Federico 
Published: May 2021

Abstract
The new serious consideration to masonry and non-metallic structures evidenced their direct prospective to be, even in the present days, advanced architectural and engineering solutions. In the present paper, a form finding for a cement based tessellated pierced vault is studied. The multi-body rope approach (MRA) was used to define compression-only vault optimal shapes. Successively, the thrust network analysis (TNA) was implemented by Rhino-vault for a further validation of the shape and the definition of different tessellation meshes of the surfaces, according to different hole pattern configuration. Different piercing percentage of the vaults were considered and compared for the best solution identification. In addition, the geometrical solutions were analyzed by means of global stability analysis, taking into account the different positions of the holes. Furthermore, 3D printing with a Fuse Deposition Modeling (FDM) technique in polylactide (PLA) material (completely eco-friendly) is used for the construction of the formworks of the cement based blocks (dowels) useful for the assembly of a vault scaled prototype. The prototype of the vault, characterized by a certain piercing percentage was subjected to different loading conditions and monitored by a non-contact device based on the Digital Image Correlation (DIC) technique. The 3D-DIC was performed to recognize the structural behavior during the loading process of the model (prototype). DIC measurements were used to recognize in advance the critical condition of the vault under loading and the displacement measurements were correlated to the different loading phases up to the collapse condition.
Basics of teaching electrochemical impedance spectroscopy of electrolytes for ion-rechargeable batteries – part 2: dielectric response of (non-) polymer electrolytes
Authors: Abdul Halim Suhaila Idayu , Chan Chin Han , Apotheker Jan 
Published: May 2021

Abstract
In the Part 2 of this article, we present the phenomenological response of the dielectric relaxation for polymer electrolytes monitored by electrochemical impedance spectroscopy (EIS) in terms of electrochemical point of view, such as impedance (Z*), permittivity (ε*), loss tangent (tan δ), modulus (M*) and conductivity (σ*) spectra. It is noteworthy to note that all the electrochemical aspects mentioned are of interest for conduction and seen as closely related to each other indirectly or directly. Two different systems; solid polymer electrolyte (SPE) [poly(ethylene oxide) (PEO) + lithium perchlorate (LiClO4)] and non-SPE [poly(methyl acrylate) (PMA) + LiClO4] were employed for discussion. EIS is a powerful technique to characterize the electrical properties of polymer electrolytes. The results suggest that impedance and modulus are of interest for decoupling of dielectric and electric properties by evaluating the short-range and long-range mobility of the charged entities, respectively. One is able to identify the conduction mechanism of the polymer electrolytes easily if the responses are well understood. The objective of this article to introduce a simplified yet an insightful background and technique that is easy to be followed and useful for educational purposes especially for beginners or young researchers for both undergraduates and postgraduates.
Analysis of environmental factors for production of green raisins in Liang-fang
Authors: Xie Hui , Zhang Wen , Han Shouan , Wang Min , Qin Liuwei , Aiermaike Caikasimu , Guo Xinbo , Bai Shijian , Wu Guohong , Zhao Ronghua , Li Jiang , Pan Mingqi 
Published: May 2021

Abstract
The commercial value of green raisins produced by the shade-air drying in Liang-fang was 2–3 times as high as that of yellow-brown raisins. This study systematically evaluated the effect of the temperature, humidity, and light of sun drying and shade-air drying on raisins. The sugar, acids, texture and color parament of raisins were compared with different drying conditions. The results indicated that shade-air drying can offer a dark and conducive light environment with the maximum temperature below 40 °C, and a lower humidity by segregating rainwater during the day as well. Then, the contents of acids of raisins in sun drying were lower compared with the shade-air drying and had a lower hardness and a* values of raisins. In summary, low light and ultraviolet intensity, suitable temperature and appropriate humidity environments were the basal and key factors for the formation of the green raisins. The present study not only revealed the crucial factors during shade-air drying in Liang-fang in Turpan, but also provided a scientific basis for improving the Liang-fang conditions and producing green raisins in other regions.
On The Contribution of Interest Expense (Income) on Total Output
Authors: Nizam Ahmed Mehedi 
Published: May 2021

Abstract
A decrease in interest rate in traditional view of monetary policy transmission is linked to a lower cost of borrowing which eventually results into a greater spending in investment and a bigger GDP. However, a decrease in interest rate is also linked to a decrease in interest income which, in turn, affects the aggregate demand and total GDP. So far, no concerted effort has been made to investigate this positive inter-relation between interest income and GDP in the existing literature. Here in the first place we intuitively describe the inter-relation between interest income and output and then provide a micro-foundation of our intuitive reasoning in the context of a small endowment economy with finitely-lived identical households. Then we try to uncover the impact of nominal interest income on the macroeconomy using multiplier theory for a panel of some 04 (four) OECD countries. We define and calculate the corresponding multiplier values algebraically and then we empirically measure them using impulse response analysis under structural panel VAR framework. Large, consistent and positive values of the cumulative multipliers indicate a stable positive relationship between nominal interest income and output. Moreover, variance decomposition of GDP shows that a significant portion of the variance in GDP is attributed to interest income under VAR/VECM framework. Finally, we have shown how and where our analysis fits into the existing body of knowledge.
Optimization for drilling process of metal-composite aeronautical structures
Authors: Devitte Cristiano , Souza Gabriel S. C. , Souza André J. , Tita Volnei 
Published: May 2021

Abstract
Metal-composite laminates and joints are applied in aircraft manufacturing and maintenance (repairing) using aluminum alloys (AA) and glass fiber-reinforced polymer (GFRP). In these applications, drilling has a prominent place due to its vast application in aeronautical structures’ mechanical joints. Thus, this study presents the influence of uncoated carbide drills (85C, 86C, H10N), cutting speeds (v
c = 20, 40, and 60 m min−1), and feed rates (f = 0.05, 0.15, and 0.25 mm rev−1) on delamination factor, thrust force (

F

t

{F}_{\text{t}}

), and burr formation in dry drilling metal-composite laminates and joints (AA2024/GFRP/AA2024). Experiments were performed, analyzed, and optimized using the Box–Behnken statistical design. Microscopic digital images for delamination evaluation, piezoelectric dynamometer for thrust force acquisition, and burr analysis were considered. The major finding was that the thrust force during drilling depends significantly on the feed rate. Another significant factor was the influence of the drill type (combined or not with feed rate). In fact, it was verified that the feed rate and the drill type were the most significant parameters on the delamination factor, while the feed rate was the most relevant on thrust force. The cutting speed did not affect significantly thrust force and delamination factor at exit

(

F

da

S

)

\hspace{.25em}({F}_{{\text{da}}_{\text{S}}})

. However, the combination f × v
c was significant in delamination factor at entrance

(

F

da

E

)

\text{&#x00A0;}({F}_{{\text{da}}_{\text{E}}})

. Based on the optimized input parameters, they presented lower values for delamination factors (

F

da

E

=
1.18

{F}_{{\text{da}}_{\text{E}}}=1.18

and

F

da

S

=

1.33

{F}_{{\text{da}}_{\text{S}}}=\hspace{.25em}1.33

) and thrust force (

F

t

=
67.3

N

{F}_{\text{t}}=67.3\hspace{.5em}\text{N}

). These values were obtained by drilling the metal-composite laminates with 85C-tool, 0.05 mm rev−1 feed rate, and 20 m min−1 cutting speed. However, the burrs at the hole output of AA2024 were considered unsatisfactory for this specific condition, which implies additional investigation.
Pharmacologic Treatment in Functional Abdominal Pain Disorders in Children: A Systematic Review
Authors: Rexwinkel Robyn , de Bruijn Clara M. A. , Gordon Morris , Benninga Marc A. , Tabbers Merit M. 
Published: May 2021

CONTEXT:
Functional abdominal pain disorders (FAPDs) are common in childhood, impacting quality of life and school attendance. There are several compounds available for the treatment of pediatric FAPDs, but their efficacy and safety are unclear because of a lack of head-to-head randomized controlled trials (RCTs).

OBJECTIVE:
To systematically review the efficacy and safety of the pharmacologic treatments available for pediatric FAPDs.

DATA SOURCES:
Electronic databases were searched from inception to February 2021.

STUDY SELECTION:
RCTs or systematic reviews were included if the researchers investigated a study population of children (4–18 years) in whom FAPDs were treated with pharmacologic interventions and compared with placebo, no treatment, or any other agent.

DATA EXTRACTION:
Two reviewers independently performed data extraction and assessed their quality. Any interresearcher disagreements in the assessments were resolved by a third investigator.

RESULTS:
Seventeen articles representing 1197 children with an FAPD were included. Trials investigating antispasmodics, antidepressants, antibiotics, antihistaminic, antiemetic, histamine-2-receptor antagonist, 5-HT4-receptor agonist, melatonin, and buspirone were included. No studies were found on treatment with laxatives, antidiarrheals, analgesics, antimigraines, and serotonergics.

LIMITATIONS:
The overall quality of evidence on the basis of the Grading of Recommendations, Assessment, Development and Evaluations system was very low to low.

CONCLUSIONS:
On the basis of current evidence, it is not possible to recommend any specific pharmacologic agent for the treatment of pediatric FAPDs. However, agents such as antispasmodics or antidepressants can be discussed in daily practice because of their favorable treatment outcomes and the lack of important side effects. High-quality RCTs are necessary to provide adequate pharmacologic treatment. For future intervention trials, we recommend using homogenous outcome measures and instruments, a large sample size, and long-term follow-up.
Day trip to hell: A mixed methods study of challenging psychedelic experiences
Authors: Johnstad Petter Grahl 
Published: May 2021

AbstractBackground and aimsThis article presents a mixed methods study of challenging psychedelic experiences or “bad trips”, with the aim of exploring the nature and characteristics of such experiences. While challenging psychedelic experiences have been studied in previous research, the article posits that the focus of this research has been overly narrow in terms of the characteristics and etiology of these experiences, and that it would be helpful to broaden our understanding of what a challenging psychedelic trip might be and how it affects users.MethodsIn the first study, respondents (N= 38) were recruited at various online fora for individual anonymous interviews via private messaging. The Cannabis and Psychedelics User Survey used for the second study was constructed on the basis of the knowledge obtained from interviews, and recruited 319 participants (median age 33; 81% male) from seven different online communities. Respondents were asked to characterize both a typical and their worst psychedelic experience, allowing for comparisons between the two and for regression analyses of associations between challenging experiences and other factors.ResultsBoth in interviews and in the survey, respondents reported a broader range of characteristics for challenging psychedelic experiences than what has previously been recognized in the research literature. Despite the often dramatic narratives, they were convinced that the experience had positive long-term consequences.ConclusionsThe two studies found that challenging psychedelic experiences have a greater thematic range than what has previously been identified. Besides the near ubiquity of fear in these experiences, confusion was also identified as an important aspect. Meditation practice had paradoxical effects on challenging psychedelic experiences, appearing as a fruitful area for further research.
The Impact of Yoga on Inspiratory Muscle Performance in Veterans with COPD: A Pilot Study
Authors: DeLuca Nicole D. , Vajta Gomez Jackeline P. , Vital Isabel , Cahalin Lawrence P. , Campos Michael A. 
Published: May 2021

Abstract
Chronic obstructive pulmonary disease (COPD) causes respiratory muscle weakness that leads to disabling dyspnea and poor functional performance. Therapies are often geared to improve inspiratory muscle performance. Yoga has been shown to improve exercise capacity, quality of life, and some pulmonary function measures in COPD, but little research has examined the effects of yoga training on inspiratory muscle performance. The purpose of this study was to investigate the effects of yoga training on inspiratory muscle performance in military veterans using the Test of Incremental Respiratory Endurance (TIRE). A prospective pilot study examined a 6-week yoga training program consisting of asana (poses) and pranayama (controlled breathing). Subjects had baseline inspiratory muscle weakness. The TIRE measured inspiratory muscle performance via the PrO2 device, providing maximal inspiratory pressure, sustained maximal inspiratory pressure, and inspiratory duration. Secondary measures included 6-minute walk distance, St. George Respiratory Questionnaire, Hospital Anxiety and Depression Scale, and spirometry. Mean age and BMI of subjects were 67 ± 3.6 years and 20.7 ± 3.3, respectively. The majority of subjects had severe (28.7%) or very severe (57.1%) COPD. Statistically significant improve m e n t s were seen in maximal inspiratory pressure (39.0 ± 14.1 cmH2O to 56.4 ± 20.6 cmH2O) and sustained maximal inspiratory pressure (244.1 ± 100.6 PTU to 308.1 ± 121.2 PTU). No statistically significant improvements we re observed in 6-minute walk distance, St. George Respiratory Questionnaire, Hospital Anxiety and Depression Scale, or spirometry. Yoga training has the potential in improve inspiratory muscle performance in veterans with severe to very severe COPD who present with inspiratory muscle weakness. This is of importance because improving inspira-tory muscle performance has been shown to improve COPD outcomes.
Study on pattern of consumption of fruits and vegetables and associated factors among medical students of Delhi
Authors: Khokhar Anita , Singh Sunil Kumar , Bharti Aakanksha , Sharma Manila , Mishra Suruchi 
Published: May 2021

Background: Fruits and vegetables are a rich source of essential micronutrients i.e. vitamins/minerals and dietary fibers required for the normal daily functionality of the body. Young adults such as medical students are a particularly vulnerable population in terms of health issues and adequate diet. Objective of the study was to find the pattern of fruits and vegetables consumption in undergraduate medical students of Delhi.Methods: A cross-sectional study was planned among 300 undergraduate students from medical college in New Delhi. The questionnaire consisted of questions about identification data, pattern of fruit and vegetable consumption. Data was analyzed by SPSS software version 21.0 and for qualitative data analysis chi-square test was used.Results: Mean age of study subjects was 20.82±2.1 years and females (52.7%) were more as compared to (47.3%) males. Out of 300 participants, only one third (33.3%) of study participants consumed more than five servings of fruits and vegetables. More than half of study participants felt that unsafe use of pesticides, difficult to eat five servings in a day, poor handling and poor quality of fruits and vegetables were the most common barriers in consumption of FVs. Age and semester of study participants and education status of mothers were found significant predictors of consumption of recommended number of serving of FVs in day. Conclusions: This study concludes that only one third of study participants consumed more than five servings of fruits and vegetables which is recommended number of serving in a day. So, there is a need to increase awareness about importance of fruits and vegetables consumption among study population.
Early diagnosis and treatment of hydatidiform mole in adolescent pregnant woman
Authors: Pramana Putu Harrista Indra , Kaspan Kaspan 
Published: May 2021

Hydatidiform mole belongs to the spectrum of gestational trophoblastic disorders in which abnormal conception leads to excess placental tissue formation in the absence of fetal development. The incidence of hydatidiform mole is quite rare so that not all experienced clinicians handle this case in clinical experience. Therefore, we present a case of hydatidiform mole in an adolescent patient. A 14-year-old primigravida woman, unemployed, with elementary school education, with a gestational age of 16 weeks went to the ER with complaints of vaginal bleeding for 2 days. Physical examination found the fundal height at umbilicus, abdominal tenderness, accompanied by vaginal bloody discharge. Complete blood count found mild normochromic anemia with increased levels of T3 and decreased TSH. Ultrasound imaging found a typical vesicular pattern of a hydatidiform mole. Treatment of molar evacuation by curettage and drainage was carried out one day after presentation and obtained 600 grams of molar tissue. The patient underwent 24 hours of post-operative observation before being discharged in a stable state. The patient presented with a typical clinical appearance of hydatidiform mole. Ultrasound imaging reveals a typical complete hydatidiform mole accompanied by anemia and hyperthyroxinemic which may accompany hydatidiform mole. Evacuation was carried out according to clinical guidelines and the patient was discharged in a good condition.
Syndesmosis Repair Affects in Vivo Distal Interosseous Tibiofibular Ligament Elongation Under Static Loads and During Dynamic Activities
Authors: Canton Stephen P. , Gale Tom , Onyeukwu Chukwudi , Hogan MaCalus V. , Anderst William 
Published: May 2021

Background:
Ligamentous ankle injuries are the most common injuries sustained by athletes and by the general population, with an incidence of approximately 2 million per year in the U.S. Injuries to the ankle syndesmosis (i.e., “high ankle sprains”) are generally treated operatively. Although cadaveric studies can evaluate syndesmosis fixation strength, they cannot predict how healing, neuromuscular adaptation, or dynamic loading will affect in vivo biomechanics. Using dynamic biplane radiography (DBR), we tested the hypothesis that syndesmosis repair would restore ankle kinematics and ligament elongation during static and dynamic loading.

Methods:
A convenience sample of 6 male patients who had undergone fixation (2 screw, 3 suspensory, 1 hybrid) of syndesmosis injury were assessed with use of DBR during forward running, backpedaling, a 45° angled single-leg hop, and 1 static standing trial at 2 to 4.5 years postoperatively. Three-dimensional ankle kinematics and elongation of the distal interosseous ligament, anterior inferior tibiofibular ligament, and the posterior inferior tibiofibular ligament were measured bilaterally. Comparisons were made between the operative and uninjured sides. Clinical outcomes were evaluated with use of the Foot and Ankle Ability Measure.

Results:
Static load increased the lengths of the distal interosseous ligament (p = 0.02 to 0.05) and middle segment of the anterior inferior tibiofibular ligament (p = 0.02) in the operative ankle. The distal syndesmosis length was greater on the operative side during the static unloaded and loaded conditions (p = 0.02). Length of the distal syndesmosis on the operative side was greater than the corresponding healthy syndesmosis length during all 3 dynamic activities. On average, the operative ankle was in less dorsiflexion over the support phase of the angled hop (p = 0.05) and running (p < 0.01). The average Foot and Ankle Ability Measure Activities of Daily Living and Sports subscale scores were 95 and 88, respectively.

Conclusions:
This study provides the first in vivo evidence of post-fixation changes in biomechanics after syndesmosis repair. Syndesmosis repair fails to restore healthy static and dynamic distal tibiofibular anatomy, even in patients who report good to excellent clinical outcomes.

Level of Evidence:
Therapeutic Level IV. See Instructions for Authors for a complete description of levels of evidence.
Statistical Modeling for Land Surface Temperature in Borneo Island from 2000-2019
Authors: Munawar Munawar , Prasetya Tofan Agung Eka , McNeil Rhysa , Jani Rohana 
Published: May 2021

Abstract
Increased temperature is one of the signals of global warming. Trends in land surface temperature can be used to measure climate change. This research aimed to investigate the variation of land surface temperature in Borneo island using a cubic spline method and a multivariate regression model. The island was divided into 8 regions each comprising 9 subregions. Land surface temperatures for each subregion from 2000 to 2019 was obtained from the National Aeronautics and Space Administration moderate resolution imaging spectroradiometer database. The average increase in temperature was 0.2oC per decade with a 95% confidence interval of (0.14, 0.27). The changes differed by region; a significant increase was seen in Sarawak, North Kalimantan, West Kalimantan, West-central Kalimantan, Central-east Kalimantan region, a slight decrease in Sabah and Brunei Darussalam (Sabah & Brunei) region, a slight increase in East Kalimantan and a stable trend in South Kalimantan.