bluuebunny/crossref_metadata_2025_split huggingface dataset:
Quantification of Cannabinoids in Cannabis Oil Using GC/MS:
Method Development, Validation, and Application to Commercially Available
Preparations in Argentina
Authors: Fernández Nicolás , Carreras Laura Jorgelina , Larcher Rafael Antonio , Ridolfi Adriana Silvia , Quiroga Patricia Noemí 
Published: May 2020

AbstractThe medicinal use of cannabis oil is increasing all over the world. Few
analytical methods for the quantification of cannabinoids have been validated
using internationally accredited guidelines. This work describes the development
and validation of a selective and sensitive gas chromatography-mass spectrometry
method for the qualitative analysis of the main cannabinoids, namely
cannabidiolic acid, tetrahydrocannabinolic acid, cannabigerol, and
cannabichromene as well as quantitative determination of cannabidiol,
Δ9-tetrahydrocannabinol, and cannabinol, present in
cannabis oils. The method was fully validated according to Food and Drug
Administration and International Conference on Harmonization guidelines. A
linear range of 0.1–30 μg/mL was obtained for CBD and
Δ9-THC and 0.034–11.7 μg/mL for
CBN, presenting determination coefficients above 0.99. The lower limits of
quantification ranged from 0.034 to 0.1 μg/mL. The intra- and
inter-day precision, calculated in terms of relative standard deviation, were
3.9–13.8 and 4.7–14.1%, respectively. Extraction
efficiency at lower limits of quantification was 95–103%.
Verification of method validity was performed with authentic cannabis oil
samples. To our knowledge, this is the first method available in Argentina,
validated according to international guidelines, for quantification of CBD,
Δ9-THC, and CBN in cannabis oil. The primary application
of this method is to differentiate between cannabis oils with high or low
content of Δ9-THC, CBD, or mixed
Δ9-THC/CBD. This is of fundamental importance for the
patient and so that the physicians can carry out a suitable therapy.
Adenoid hypertrophy existence in adulthood- a truth revealed
Authors: Bage Atul M , D. Anand Karthikeyan , Bage Nutan N 
Published: May 2020

Abstract
Background and aims: The adenoids (nasopharyngeal tonsils) are part of Waldeyer’s ring of lymphoid tissue. Endoscopic examination of the nasopharynx increasingly recognized that adenoidal tissue in adults is not an uncommon finding. The aims of this study were to determine prevalence of adult adenoid tissue and the possible reasons behind it. Methods: A retrospective study of 1,100 adult patients, who had routine nasal endoscopic examination for nasal obstruction and related pathologies, was undertaken. 84 cases with incidental hypertrophied adenoid were reviewed to determine the probable cause, presenting symptoms, clinical suspicion and final histological diagnosis. Results: The age of patients ranged from 18 years to 77 years. Median age was 32 years. 59 (70.24%) of adenoid hypertrophy patients were smokers and only 25 (29.76%) were nonsmokers suggesting strong association between smoking and adult adenoid hypertrophy with odds ratio=5.3251, χ2value of 54.23 and an extremely significant p value. All the 84 cases were confirmed histopathologically as Reactive adenoid hyperplasia and no signs of malignancy in any of them. Conclusions: The true incidence of adenoidal hypertrophy in adults is unknown. Adenoidal tissue in adults, if present, must always be biopsied or removed irrespective of their macroscopic appearance. The result underlines the importance of considering adenoid hypertrophy as a cause or contributing factor in nasal obstruction and related pathologies in adults. It also supports the theory that it represents a long-standing inflammatory process rather than being a novel clinical entity.
Intraoperative Proximal Tibia Periprosthetic Fractures in Primary Total Knee Arthroplasty
Authors: Damsgaard Christopher W. , Gad Bishoy V. , Bono Olivia J. , Anderson Marie C. , Brown Jonathon M. , Bono James V. , Talmo Carl T. 
Published: May 2020

AbstractIntraoperative fracture of the proximal tibia is a rare complication of total knee arthroplasty (TKA) with few studies available reporting risk factors or prognosis. A review of our prospective joint registry was performed to determine the incidence and associated risk factors of intraoperative tibia fractures during primary TKA; 14,966 TKAs of all manufacturers were performed with 9 intraoperative tibia fractures. All fractures occurred in a single TKA design. There were 8,155 TKAs of this design performed with a fracture incidence of 0.110%. All but one fracture occurred on the medial tibial plateau, and all but one occurred during preparation of the tibia with keel punching. A control group of 75 patients (80 knees) with the same TKA design were randomly selected. Baseplates size 3 or smaller were less likely to experience an intraoperative fracture (odds ratio [OR]: 0.864, 95% confidence interval [CI]: 0.785–0.951), as were knees with a polyethylene insert thickness of 13 mm or larger (OR: 0.882, 95% CI: 0.812–0.957). Fractures were treated with a variety of different methods, but every patient had at least one screw placed and most (67%) had postoperative weight-bearing restrictions. At final follow-up, there were no cases of nonunion, component subsidence, or need for reoperation. Intraoperative tibia fractures are a rare complication of this TKA design at 0.11%. Knees with baseplates of size ≤3 and polyethylene thickness ≥13 mm were less likely to experience intraoperative fracture. These findings may be related to the depth of tibial resection, requiring the use of a thicker polyethylene insert, and a change in the keel width in implants size 4 or larger. No fracture patients required reoperation.
Targeted mutation of secretogranin-2 disrupts sexual behavior and reproduction in zebrafish
Authors: Mitchell Kimberly , Zhang Wo Su , Lu Chunyu , Tao Binbin , Chen Lu , Hu Wei , Trudeau Vance L. 
Published: May 2020

Significance
The secretory granule protein secretogranin-2 is processed to the bioactive neuropeptide secretoneurin. While these are expressed in hypothalamic neurons and anterior pituitary cells, a role in hormonal control of reproduction is unknown. We provide in vivo evidence that secretogranin-2 plays critical roles in fertility regulation. Mutation of the secretogranin-2a and -2b genes in zebrafish leads to disrupted sexual behaviors, reduced ovulation and egg laying, and suboptimal fertility and embryo survival. Injection of a synthetic secretoneurin peptide enhanced reproductive outcomes in the mutant fish. Our secretogranin-2 mutants offer an amenable model system in which to screen potential injectable stimulators of reproduction, be they for spawning in cultured fish species, or to help with the search for new human infertility treatments.
Shifting bonds in suspect
interrogations
Authors: Kataoka Kuniyoshi 
Published: May 2020

Abstract
In this paper I will
examine a series of police interrogations in which
various “bonding” strategies – typically
linguistic “modality” and “person reference” in
Japanese – are employed. The prosecution process
in Japan is notorious for unduly allowing the
police to extend the detention period while
various types of ploys and threats can be
attempted to make a suspect to confess to the
accused crime. Although such “bonding” between a
suspect and the police may sound like a misleading
characterization, one can expect to find
comparable features to what we typically observe
in “bonded” relationships. I will examine how the
bond between a suspect and interrogators,
established in an inhumane environment called
daiyō-kangoku ‘police detention
cell,’ can be modified in the interrogation
process.
How does collaborative governance evolve? Insights from a medium-n case comparison
Authors: Ulibarri Nicola , Emerson Kirk , Imperial Mark T , Jager Nicolas W , Newig Jens , Weber Edward 
Published: May 2020

Abstract
Understanding the performance of collaborative governance regimes (CGRs) necessitates an understanding of how stakeholders and their interactions evolve over time. However, few studies assess the evolution of the structure or process dynamics of CGRs over time. This paper contributes to our understanding of the longitudinal dynamics of CGRs. We apply a modified grounded theory approach to a dataset of collaboration case studies to develop empirically-based theory about how often CGRs persist over time, how different components of CGRs evolve over time, what conditions support or hinder this evolution, and how different developmental trajectories lead to differences in the outputs and outcomes achieved by these groups. We find that CGRs follow a variety of trajectories, from failing to initiate, to achieving their work in a relatively quick time, to sustaining their operations for decades, to incurring slow or rapid declines in health. Additionally, many characteristics of CGRs, including leadership, collaborative process, accountability, and outputs/outcomes, peak at the midpoint of the observed time, suggesting that at some point, even stable and healthy collaborations incur some decline in their robustness. As an exploratory study, this work highlights the need for a better accounting of how CGRs develop, sustain, evolve, and decline over time.
The intermittent nature of player physical output in professional football matches: An analysis of sequences of peak intensity and associated fatigue responses
Authors: Schimpchen Jan , Gopaladesikan Sudarshan , Meyer Tim 
Published: May 2020

AbstractProfessional footballers experience transient periods of in‐game fatigue which might affect match outcomes. Further information regarding the degree of fatigue elicited by periods of peak physical intensity across different movement metrics is needed to allow for a more informed design of targeted training interventions. To that end, the purpose of this study was to identify sequences of player peak physical output in‐game for three different rolling time windows (1‐, 5‐, 10‐minutes) across three movement categories (total distance, high‐intensity distance, average acceleration/deceleration) for 29 players during a full season of professional football matches. Physical performance was also assessed for the 5‐minutes after peak intensity to identify possible signs of acute fatigue, while goal differential and match time were registered as contextual variables to analyse whether peak physical output fluctuations were game‐state dependent. Total distance and average acceleration/deceleration were reduced by 11%–18% in the first minute after peak intensity but returned to match average within the third minute. High‐intensity distance remained reduced by 64%–89% from the first minute after peak intensity to 6%–31% at the fifth minute after. Both contextual factors had an influence on players’ ability to perform at peak intensity, but only when considering total distance and average acceleration/deceleration. In contrast, high‐intensity distance peak performance remained unaffected by contextual factors. These findings indicate that player in‐game fatigue is most pronounced after periods of peak high‐intensity running, highlighting the need for targeted training interventions to minimise subsequent reductions in players’ physical output capabilities.
Performance Evaluation Solar Charge Controller on Solar Power System Home-Based SPV Amorphous 80 Watt-peak.
Authors: Sofijan Armin , Nawawi Zainuddin , Yudho Suprapto Bhakti , Sipahutar Riman , Bizzy Irwin 
Published: May 2020

Abstract
The problem in renewable energy technology is the capacity stability, battery life and sustainability of energy supply. Similarly, it applies to solar power plant or Solar Home System (SHS). To deal with the required Solar Charge Controller (SCC), the form of electronic equipment that implements the Pulse Width Modulation (PWM) technology in the lead acid battery capacity 120 Ah to set battery charging function and current discharging from battery to load generated by solar Photovoltaic (SPV) Amorphous 80 Wp. Research has been done for systems that work well through the testing phase and data retrieval at the research laboratories. Performance SCC generates the largest current on the current panel 2.08 ampere, at 13.00 pm Use the load Head light of 10 W, 15 W, and 20 W. The load of 10 W generates a current of 0.850.92 A, at a load of 15 W generates a current of 1.23-1.26 A and on Load of 20 W generates a current of 1.77-1.79 A.
The Implementation of YateBTS Based GSM Using Raspberry Pi
Authors: Soim Sopian , Suroso  , Silvia Handayani Ade , Taqwa Ahmad , Shadrina Nur 
Published: May 2020

Abstract

This paper presents YateBTS technology that based on GSM technology that could be solution substitute for Base Transceiver Station in general. This technology system is based on software defined radios and an open sources GSM implementation software. This monitoring system was created using raspberry pi as a workstation and the software defines radio as a transceiver. This paper provides survey of recent open source cellular technologies. It further presents a prototype based on YateBTS for cellular connectivity in developing countries. In lab performance test for the proposed prototype confirm the feasibility of deploying cellular network based on open source technologies as an alternative to conventional mobile operator networks in a bid to solve the challenge. The results of the implementation of this system are the configuration of devices, users, and making calls between fellow users who have registered with YateBTS.
Optimization of Own Electricity Usage with Electricity Supply from Solar Cells at Darajat Geothermal Power Plant
Authors: Chandra Supian Atmodjo Brendy , Dalimi Rinaldy 
Published: May 2020

Abstract
At Darajat Geothermal Power Plant there is the use of the generator’s own electricity for equipment such as cooling water pumps, lubricating oil pumps, oil transfer pumps, lighting lamps, heaters and others. The cost of own-use electricity used by the equipment based on the selling price of electricity from geothermal power plants to PLN is 1,119.74 Rp / kWh. With the potential of solar radiation of 4.90 kWh/m2 per day, optimization of electricity consumption using solar cells and batteries will be carried out. The price of the solar cell is assumed to be 12,000,000 Rp/kW, the battery inverter is 2,000,000 Rp/kW and the battery is 2,350,590 Rp/kW. The lifespan of solar cell equipment and batteries is 20 years. This paper will be simulated in 4 cases and the result will be the price of electricity based on the value of capital divided by the total electricity produced by solar cells and batteries for 20 years. Case 1 when using solar cell day and night using batteries and the result of electricity price for case 1 is 718.648 Rp kWh. Case 2 when using solar cell day and night using its own electricity from the generator and the result of electricity for case 2 is 990.952 Rp/kWh. Case 3 when using solar cell and battery, at night using battery and the result of electricity for case 3 is 711.77 Rp/kWh. Case 4 when using solar cells and batteries, at night using electricity itself from the generator and the results of the case 4 electricity price is 978.005 Rp/kWh. Based on the 4 case simulations, the price of electricity will be cheaper if during the day using a solar cell plus battery and night using a battery, as in case 3, the price of own electricity power plant is 711.77 Rp/kWh.
Analysis of Performance Test and Consumption of BLDC 350 W Motor Power to Mechanical Vibration with Variation of Speed and Load Variation
Authors: Hairul  , Markori  , Indrawasih  , Yahya Sudirman 
Published: May 2020

Abstract

Electric motors Performa with the type of BLDC (Brushless DC Motor) or DC brushless motors are widely used in the industrial sector as movers that have a relatively constant speed, and are also widely used in transportation as electric car drives, electric bicycles and electric motors. In this study a 350 watt BLDC motor was used as the main driver. The motor is controlled via a BLDC Controller with a 48 Volt 10 Ampere variable DC Rectifier. The test is done by measuring the power absorbed by the motor and its speed, and measuring the vibration or vibration of the motor, using a vibration meter. In this study, it is expected that the test results can be analyzed to obtain the performance of a high efficiency BLDC motor that is energy efficient. In this research, the performance of BLDC Motor will be maximal with the use of the smallest wheel transmit when the motor is starting and running condition is using the highest transmission gear. The results of the study are used to improve and improve performance in the manufacture of electric vehicles for competition and commercial use.
SELT Design as a Source of Renewable electricity using the Flywheel Generator and Photodioda Sensor
Authors: Maulana Indra , Seprianto Dicky , Najib Muhammad , Yudhianto Yossy , Azwar Muhamad 
Published: May 2020

Abstract
Day by day, the use of electricity in Indonesia is increasing. This can be shown from the increase use of household electricity consumption in January to June 2018 which reached 42.25 percent or 47.5 TWh and increased by 3 percent per year. This makes many people compete in making free energy. One of the many free energy that is currently made is the energy flywheel. This flywheel uses a flywheel material as an additional material in stabilizing the rotation of a 1 phase motor. It uses sensors that is modified with a voltmeter. It also can be done automatically so that when the voltage reaches 220 V, the input electricity will be disconnected and will use electricity from rotational energy of the generator flywheel.
The Effect of Parameters on the Process of Making Objects with Rapid Prototyping Digital Light Processing Technology on the Bending Stress
Authors: Romli  , Seprianto D , Putra DP , Zamheri  , Rasid M 
Published: May 2020

Abstract
The world is currently entering the era of the industrial revolution of 4.0. The era in which the occurrence of disruptive technology. The main purpose of this existence of the industrial revolution to create stability in the distribution of goods and necessities. Broadly speaking, there are some benefits that can be posed by the presence of the industrial revolution 4.0 is encouraging research, customization, and optimization. In addition, there are several challenges to be faced in the industrial revolution was the first IE 4.0 security, the second is the capital, and then a third that is employment, and the fourth is privacy. A method that can respond to these challenges is additive manufacturing using SLA-DLP 3D Printing. The making of objects utilizing CAD data that have been made in advance. This research aims to know the effect of object making process parameters with digital light processing rapid prototyping technology on bending stress. The parameters investigated is the layer thickness and the exposure time. Test specimens made of a material with liquid photopolymer resin refer to ASTM D 790 using SLA-DLP 3D Printer. Measurement results in data analysis using ANOVA design with type 2 factorial design model and level 1 factorial interactions assisted by software Design Expert trial version. The results of the ANOVA is known that factors significantly (α = 0.001), to effect of object making process parameters with digital light processing rapid prototyping technology on bending stress., that are the layer thickness=10%, exposure time=2%, interaction layer thickness and exposure time=87%.
The Effect of Rectangular Parallel Key Manufacturing Process Parameters Made with Stereolithography DLP 3D Printer Technology Against Impact Strength
Authors: Seprianto D , Sugiantoro R , Siproni  , Yahya  , Erwin M 
Published: May 2020

Abstract
This study aims to determine the effect of the thickness of the Layer and Exposure Time on the strength, impact toughness applied to the prototype of the reduction gear post, test specimens made using SLA DLP 3D Printer with 3D UV Resin Anycubic material and referring to ASTM D-256. In this research, creating objects using SLA DLP 3D Printer uses CAD data which is then converted into G-Code with Creation Workshop software. Factors investigated were layer thickness, exposure time with response impact strength using Charpy method of test specimens. The test result data were analyzed using ANOVA with type 2 factorial level design, 2 factorial interaction design (2FI), and replication 3 modelled by Design-Expert software. The results of the analysis revealed that the main factor that had the most influence on the impact strength of the test specimens was the layer Thickness factor with a percentage contribution of 52%, while the interaction between Layer Thickness and Exposure Time contributed 6%. Based on impact testing with a layer thickness parameter of 0.05 millimetres and an Exposure Time of 15 seconds, the optimal results are an average impact price of the Charpy method 0.005600 Joule/mm2.
Cooling Channel Design for a Built-in Spindle of a Machine Tool
Authors: Li Kun-Ying , Luo Win-Jet , Wei Shih-Jie , Liao Yan-sin 
Published: May 2020

Abstract
The generating heat from bearings and a motor of a built-in high rotating speed spindle of a machine tool has to be dissipated to attain high machining accuracy. In this study, a machine tool with a coolant cooling system for a high rotating speed spindle was investigated. The cooling channel designs in terms of channel pattern and dimensions by the design of experiment method (DOE) on the cooling effect of the spindle were studied. By the optimized cooling channel design, the cooling efficiency can be improved by 57.6% and the generating temperature in the spindle can be reduced by 25.9°C.
The Effect of Surface Modification on Heat Transfer of Heat Exchanger
Authors: Lin Hong-Yi , Wu Yu-Lieh , Yang Kai-Shing , Tseng Chih-Yung , Wu Shih-kuo 
Published: May 2020

Abstract
This study mainly discussed the influence of different surface properties,namely an unmodified copper fin surface and a modified hydrophobic fin surface, on the heat transfer effect of heat exchangers with air velocity ranging from 0.5 m/s to 2.5 m/s and relative humidity of 60% and 90%. The researchers established the following conclusions based on the experiment results. The heat transfer and water removal rates of the two heat exchangers increased with an increase in wind velocity. When the inlet air velocity was increased from 0.5 to 2.5 m/s, the heat transfer and water removal rates of both heat exchangers were increased by approximately 90%.Under similar air velocity conditions, heat exchangers with hydrophobic surfaces constantly removed the condensed water droplets, thereby preventing the water droplets from causing surface thermal resistance. As a result, the condensation heat transfer effect of hydrophobic surfaces was greater than that of unmodified copper surfaces. Compared with heat exchangers with unmodified copper fin surfaces, heat exchangers with hydrophobic surfaces exhibited a 5.56% higher heat transfer efficiency.