bluuebunny/crossref_metadata_2025 huggingface dataset:
Construction and technical properties of vermiculite concrete and fibro vermiculite concrete with volcanic pumice under the influence of elevated temperatures
Authors: Khezhev T. A. , Khadzhishalapov G. N. , Zhurtov A. V. , Shogenova F. M. , Kalazhokov A. V.
Published: May 2023

Objective. Development of compositions of vermiculite concrete and fibro vermiculite concrete with volcanic pumice. Investigation of the construction and technical properties of the developed compositions of vermiculite concrete and fibrovermiculite concrete with volcanic pumice under the influence of elevated temperatures.

Method. Methods of increasing the fire resistance of reinforced concrete structures are considered. The research is aimed at the development of vermiculite concrete and fibro vermiculite concrete with volcanic pumice for fire protection of building structures and the manufacture of heat-resistant products and structures. To reduce the cost of vermiculite concrete, its partial replacement with volcanic pumice is proposed. For the study of vermiculite concrete with volcanic pumice reinforced with basalt fiber, a rotatable plan of the second order of the regular hexagon type was used.

Result. Replacing a part of an expensive aggregate (expanded vermiculite) with pumice leads to a slight increase in the average density of the composite, while the bending and compressive strength increases. In addition, the heat-resistant properties of vermiculite concrete with pumice are increased. This is due to the fact that volcanic pumice, being a hydraulically active additive, is able to react hydration with cement components, eliminating the harmful effect of secondary hydration of free calcium oxide. The influence of the heating temperature on the change in the construction and technical properties of vermiculite concrete and fibrovermiculic concrete, including with the addition of pumice, has been studied. It was found that dispersed reinforcement with basalt fibers reduces shrinkage deformations, when heated to t = 800, the shrinkage decreases from 0.7 to 0.5% compared to the original concrete matrix.

Conclusion. The dependence "compressive strength = f (average concrete density)" significantly depends on the presence and ratio of pumice in the composition of vermiculite concrete, while an increase in the holding temperature to 600 oC or 800 oC leads to a decrease in the compressive strength from 15 to 25%, and the main decrease occurs when heated to 600 oC, further the increase in temperature has a negligible effect. The dependence of the bending strength on the compressive strength is generally maintained regardless of the heating temperature, and the heating of concrete does not reduce the relative bending strength, i.e. the ratio of bending strength / compressive strength is not reduced. Dispersed fiber reinforcement increases the relative bending strength by about 70% regardless of the heating temperature.
Optimization of thermoelectric temperature control systems
Authors: Semilyak A. I. , Sarkarov T. E. , Evdulov D. V. , Nazarov K. K.
Published: May 2023

Objective. The aim of the study is to study the methods of temperature control using the Peltier element in a given temperature range.

Method. A heating method is applied using a Peltier element in a temperature control device of a small plate by regulating the current and using a cooling fan to reduce inertia.

Result. A technique for controlling the Peltier element to maintain the required temperature is obtained, which is carried out using the PWM method generated by the ATmega2560 processor. The H-bridge on the L6203 integrated circuit switches the current direction and can control the current up to 5A on the Peltier element using a PWM signal.

Conclusion. The resulting control algorithm provides an increase in the heating current on the Peltier until the temperature rises to a predetermined high temperature value, and then by changing the direction of the current, a cooling current is created on the Peltier element until the temperature of the copper plate drops to a predetermined low temperature. With repeated repetition of this sequence, the regularity of temperature changes is monitored to study the process of heating and cooling the plate using the Peltier element.
Assessment methodology for security of an automated control system of critical information infrastructure against DDoS attacks based on Monte Carlo simulation
Authors: Voevodin V. A. , Chernyaev V. S. , Burenok D. S. , Vinogradov I. V.
Published: May 2023

Objective. The purpose of the study is to develop a methodology for assessing the security of an automated control system of critical information infrastructure from DDoS attacks. The purpose of the methodology development is to provide the decision–maker with a scientifically sound tool for assessing the risk of implementing a DDoS attack.

Method. To achieve the stated goal of the study, simulation modeling based on the Monte Carlo method was used.

Result. The expediency of using Monte Carlo simulation to assess the probability of server failure under DDoS attacks is confirmed. It was concluded that the server can be considered as a queuing system, however, the flow of incoming applications under DDoS attacks is not Poisson, so the use of analytical expressions to assess the probability of failure is considered incorrect. The simulation results allow the decision-maker to assess the probability of server failure and make organizational and technical decisions to increase the level of security. Analysis of the simulation results showed the effectiveness of improving server performance by increasing service channels.

Conclusion. Thus, the developed methodology will be useful in conducting an information security audit of an organization to justify the amount of its insurance premium in the framework of cyber risk insurance. A possible direction for further research is to study the issue of computer network security, taking into account the features of a specific topology.
Application of existing algorithms for classification and clustering of laser reflection points (k-Means, DBSCAN, SVM) to solve territorial planning problems
Authors: Gura D. A. , Boltovnina O. S.
Published: May 2023

Objective. The aim of the study is to generalize the experience of using and reveal the features of methods for classifying and clustering images obtained by laser scanning.

Method. The study is based on the use of algorithms for recognition, clustering and classification of data obtained using laser scanning.

Result. A brief review of existing algorithms used for clustering images obtained by laser scanning has been carried out. The possibility of using sequentially the K-means and DBSCAN algorithms for clustering in relation to objects of various shapes is shown. The possibilities of using algorithms for the classification and clustering of laser reflection points (k-Means, DBSCAN, SVM) in the framework of solving territorial planning problems are analyzed.

Conclusion. The use of the presented algorithms makes it possible to form data arrays that, when superimposed on each other subsequently and further processed, make it possible to obtain even more accurate representations of objects and territories in territorial planning documents, and in the future, based on the use of machine learning methods and processing of data matrices available in memory, get more accurate information about objects on the ground.
A high-accuracy and efficient approach to question answering for healthcare applications based on context extraction (Preprint)
Authors: Nguyen Duy Anh , Li Minyi , Lambert Gavin , Kowalczyk Ryszard , McDonald Rachael , Vo Bao Quoc
Published: May 2023

BACKGROUND

Question answering (QA) and machine reading comprehension (MRC) tasks have been developed, with state-of-the-art extractive methods having achieved comparable or better accuracy than human performance on benchmark datasets. However, such models are not as successful when adapted to complex domains such as healthcare. One of the main reasons is that the context that the MRC model needs to process in a complex domain can be much larger compared to an average open domain context. A potential solution to this problem is reducing the input context to the MRC model by extracting only the necessary parts from the original context.

OBJECTIVE

This study aims to develop a method for extracting useful contexts from long articles for Question Answering to enable the MRC model work more efficiently and accurately.

METHODS

Existing approaches to context extraction in question answering were based on sentence selection strategies, in which the models were trained to find the sentence(s) containing the answer. We found that using just the sentences containing the answer was insufficient for the MRC model to predict correctly. After a series of empirical studies were conducted, we observed a strong relation between the usefulness of the context and the confidence score output by the MRC model. We also found a strong relationship between the model’s confidence in its predictions and the prediction accuracy. Thus, we propose a method to estimate the utility of each sentence in a context in answering the question, then extract a new, shorter context according to these estimations. We generate a dataset to train two models for estimating sentence utility, based on which we select more precise contexts that improve the MRC model’s performance.

RESULTS

We demonstrate our approach on the COVID-QA and BioASQ datasets and show that our proposed context extraction approach benefits the downstream MRC model. First, our approach helps the MRC model predict the answer more accurately compared to using the original context (2.76% increase in F1 score for COVID-QA and 8.14% increase in F1 score for BioASQ). Second, our proposed method significantly reduces the inference time of the entire QA system by 6 - 7 times. We also found a potential problem in extractive Transformers MRC models where they predict poorly when given a shorter, more precise context in some cases.

CONCLUSIONS

Utilization of the proposed context extraction method allows the MRC model to achieve improved prediction accuracy, it also significantly reduces MRC inference time.
Optimizatoin of Anti-Nuntritional Removal, Protein Extraction and Modification of Functional Properties of Cowpea (Vigna unguiculata L.) Protein with Sonication
Authors: Wijatniko Bambang Dwi , Murdiati Agnes , Eliza Chelsea Rie , Mofiagesa Putri Tania
Published: May 2023

Cowpea has high protein content which makes it is potential to be utilized as a protein isolate. However, cowpeas contain some anti-nutritional compounds which can lower the nutritional quality of the cowpeas. It is necessary to reduce the antinutritional contents from the cowpeas.The objective of this study was to investigate the optimum treatments for antinutritional removal and protein extraction to produce protein isolate. Removal of antinutritional was performed by a combination of soaking treatment with the duration of 24, 48, and 72 hours with 5% NaHCO3 solution and boiling for 0, 2.5, and 5 minutes. The protein extraction was conducted by adjusting the pH to various pH at 2, 4, 6, 8, 10, 11, and 12.Soaking of cowpeas seeds for 48 hours with 5% NaHCO3 significantly reduced HCN levels to 0.72 ppm, phytic acid of 9.62 mg / g, and trypsin inhibitor of 7.02 mg / g. The protein concentrate was obtained from protein extraction by using optimum pH at 12 while precipitation of protein by using pH 4 with protein concentration at 70.9%. Sonication with 80%-30 minutes indicated an increase in the water holding capacity, oil holding capacity, emulsion stability, foaming capacity, and stability rather than untreated
Formulation and Characteristics of Red Palm Oil Nanostractured Lipid Carriers Prepared by Microemulsion Method and Its Application in Drinking Yoghurt
Authors: Elianarni Dahlia , Raharjo Sri , Supriyadi Supriyadi
Published: May 2023

The aim of this study was to investigate the characteristic of red palm oil nanostructured lipid carriers (RPO-NLC) made with microemulsion method. The microemulsion procedures prepared with ratio Tween 80 : Span 20 (80:20 ; 70:30), lipid : surfactant (1:3.75 ; 1:4), red palm oil : palm stearin (8:2 ; 7:3 ; 6:4). The best particle size was found at ratio 80:20, 1:4, 6:4 respectively with 24.73 ± 0.06 nm, zeta potential -7.43, turbidity 0,183% and polydispersity index at 0.06. This formulation indicated a loading capacity of 1.97%, encapsulation efficiency of 99.57%, FTIR, DSC, and stable emulsion at room temperature storage for four weeks. This best formulation was applied in drinking yoghurt with ratio nanostructured lipid carrier and yoghurt 1:18. The pH of yoghurt drink containing RPO-NLC increased from 4.13 to 4.37, while its encapsulation stability decreased from 78.45% to 49.29%. The results of sensory evaluation showed no significant difference in color, aroma, but there was significant difference on the taste of drinking yoghurt.
Correlation of Processing Techniques with Some Quality Indexes of Soy-Akamu Prepared with Yellow Maize, Sprouted and Un-Sprouted Soybean
Authors: Okwunodulu Innocent Nwazulu , Ugochukwu Chikodili , Ndife Joel , Ubbor Stella
Published: May 2023

Akamu or ogi is a commonly relished gruel when prepared with hot water by the sick, recovering patients and infants in Nigeria. It is nutritionally deficient due to inevitable processing losses which called for fortification with soybean (soy-akamu or soy-ogi). Soy-akanu was prepared from steeped yellow maize, sprouted and un-sprouted soybean cotyledons using different processing techniques. Proximate, micronutrients and functional properties were evaluated with standard analytical methods. The results showed that proximate composition of soy-akamu produced from dried steeped maize and sprouted soybean cotyledons had higher protein (63.20%), fibre (0.33%), ash (1.11%), energy (384.28 Kcal) and least moisture content (4.53%). The paste samples had respective values of 0.77, 3.06%; 0.00, 0.00%; 0.71, 1.02%; 29.86, 3303%; 143.50, 145.37 mg/100g, and 64 and 36-64-76%. Dried soy-akamu also had the highest calcium (41.18, iron (0.99), phosphorous (0.27), .zinc (48.02), potassium (0.45), vitamin C (24.60) and least in magnesium (0.07 mg/100g) content. The paste samples had respective values of 40.13, 41.14; 0.86, 0.92; 0.39, 0.41; 0.39, 0.41; 20.46, 23.65 mg/100g with respective magnesium (0.10-0.12)   and phosphorous ( 0.25, 2.21 mg/100g) contents. Different processing techniques had significant (p<0.05) variations in proximate, micronutrient and functional properties of the soy-akamu and also their major sources of nutrient losses.
he Effect of Migration on the Domestic Job Market: Evidence from Australia
Authors: Jati Wasisto Raharjo
Published: May 2023

This paper aims at analysing the relationship between foreign workers and its implication for the domestic job market with Australia as the point of reference. The globalized era pushes every nation to open its market including the job market. This ongoing trend surely causes disruptions in the domestic market. At the same time, the wave of overseas migrant workers fulfills the job sectors which are rarely filled by domestic workers. It can encourage the transfer of knowledge from foreign to domestic laborers. On the other hand, more overseas workers threaten the existence of domestic employers. Australia has been in a dilemma position on this matter. Many foreign workers come in fulfilling the low-level job sectors, such as fruit handpicking, construction, and nursery. At the same time, their presence threatens domestic workers who could perform better in the same field. This especially occurs when they always ask for higher wages which might be irrelevant to the domestic business cycle. In order to analyze this problem, this paper used the quantitative method. The main findings of this paper show that when the government issues policies to encourage employers to spend more on human investment, it improves the work quality of domestic workers more than foreign ones. This suggests/concludes the way government should be protective and selective in securing the domestic job market from overseas migrant workers.
Ketangguhan Wisatawan di Kawasan Malioboro pada Masa Pandemi COVID-19
Authors: Yanti Ni Kadek Winda , Widyaningsih Yulia Arisnani Arisnani , Wijono Djoko
Published: May 2023

Respon wisatawan di kawasan Malioboro kontras dengan fenomena yang terjadi di masa pandemi yang mana masyarakat cenderung menghindari ruang publik sedangkan kondisi di kawasan Malioboro sebaliknya. Penelitian ini bertujuan untuk memahami lebih dalam terkait ketangguhan atau kemampuan wisatawan di kawasan Malioboro untuk menyesuaikan diri dengan kondisi selama pandemi COVID-19. Penelitian ini melihat ketangguhan dari sudut pandang motivasi berwisata, perilaku wisatawan ketangguhan sosial tingkat individu. Penelitian ini menggunakan data kualitatif yang dikumpulkan melalui metode observasi, wawancara tidak terstruktur, dan wawancara mendalam. Penentuan narasumber, wawancara, dan analisa dilakukan dengan sistem bola salju secara terstruktur. Penelitian ini menemukan bahwa wisatawan di kawasan Malioboro mampu menyesuaikan diri dengan situasi pada masa pandemi COVID-19. Hal ini tercermin dari adanya kesadaran wisatawan terhadap bahaya, namun tetap memilih melakukan wisata dengan mempertimbangkan berbagai upaya pencegahan dan berfokus pada upaya-upaya penyesuaian diri baik oleh individu atau destinasi. Penelitian ini diharapkan berguna untuk manajemen resiko di destinasi dan mitigasi permasalahan terkait pandemi dengan memahami perilaku wisatawan.
Mimetic Reading of J.K. Rowling’s The Casual Vacancy: A Political Critique of the United Kingdom’s 2010 General Election Through the Analysis of Children Characters’ Sufferings
Authors: Sugiyanto Levina Elsa Prastiwi , Rohman Moh. Arif
Published: May 2023

In 2010, the United Kingdom called on a General Election after the Queen agreed to grant an approval to Gordon Brown’s proposal to dissolve the parliament. The Queen’s approval resulted on prorogation marking the end of Gordon Brown’s parliamentary period. The General Election was used as a stage for the United Kingdom’s three biggest parties to assert their political dominance. Publishing her first novel for adult, The Casual Vacancy, J.K. Rowling attempted to deliberate the change of political atmosphere during the major event.The recent paper employs Paul Ricoeur’s Threefold Mimesis to analyse the symbolisms presented in The Casual Vacancy in order to demonstrate how it is used as a means of constructive criticism of the three biggest parties participating in the UK’s 2010 General Election. The criticism mentioned in this paper are based on writer’s interpretation. Those are the Conservative needs to evaluate its rigid, too right-winged, outdated policies and to expunge its tendency of establishing class-exclusivity, Labour Party needs to evaluate its members and to pay more attention to its supporters’ concerns; Liberal-Democrats needs to resolve its scandals and to be more selective in postulating its candidates. Details are discussed.
CONVERSATIONAL MAXIM VIOLATION BY THE MAIN CHARACTER IN THE SHANG-CHI AND THE LEGEND OF THE TEN RINGS MOVIE
Authors: Dewi Putu Ameylia Maheswari , Ariyaningsih Ni Nyoman Deni
Published: May 2023

This study aims to identify the types of conversational maxims violation that the violated by the main character found in the Shang-Chi and the Legend of the Ten Rings Movie. Conversational maxim is a set of rule proposed by Grice (1975) that categorizes into four types, which are maxim of quantity, quality, relation, and manner. These rules are important to make an effective and clear conversation. By violating maxims, the participants of the conversation broke the rules of cooperative principle. The participants of the conversation seem to hide the real intended meanings and certain purposes which are conveyed by the speaker behind the utterance. This research uses theory by Grice’s Cooperative Principle and also support with theory by Cutting to analyze four types of conversational maxims violation. The method used to conduct this research is descriptive qualitative method. The amount of maxim violation of quantity is 6 (40%), that appears most frequently throughout the film. The violation of maxim of quality becomes the second violation that frequently found, that brings the total 4 violations (26,6%), also the third violation that occurs is violations of maxim of relation with 3 violations in total (20%). The main character violates the maxim of manners 2 times in totals (13,4%) more than any other violation, which is the least common infraction in the film.
"What the F---": Taboo Words in the TV Series Sex Education
Authors: Syahidna Brilliannisa Syahri , Roselani Ni Gusti Ayu
Published: May 2023

This study investigates the functions of taboo words used by male, female, young and adult characters in the first season of Sex Education. Azzaro (2005) and Allan & Burridge's (2009) functions of taboo words were furthermore employed to identify and classify the use of taboo words in the TV series. There were 114 utterances of taboo words in the TV series. The most common function is swearing or expletive expression (53.51%), followed by insults or abusive expression (29.82%), and the least used functions are expression of social solidarity (11.40%) and stylistic choice (5.26 %). In regards to gender, both male and female use taboo words at nearly the same frequency. In fact, 58 out of 114 taboo words and expressions were used by female characters and 56 by male characters. Moreover, with respect to age group, young characters or teenagers in Sex Education appear to use taboo words more frequently than the adult characters. Overall, 83 out of 114 taboo words and expressions were used by teenage characters and 31 by adult characters. In addition, there are frequency differences in the use of taboo words in four specific gender and age groups. Those groups are young male, adult male, young female, and adult female.Keywords: taboo words, functions, gender, age, and TV series
Knowledge of pregnant women about risk factor of cleft lip and palate at Puskesmas Mutiara, Asahan, Indonesia
Authors: Rusdy Hendry , Syaflida Rahmi , Hanafiah Olivia Avriyanti , Ratnaningtyas Jemima
Published: May 2023

Cleft is a congenital abnormal space or gap in the upper lip, alveolus, or palate. This congenital abnormality occurs between the 5th and 10th weeks of pregnancy. Clefts are divided into cleft lip, cleft palate, as well as cleft lip and palate. Cleft lip and palate are caused by the interaction of individual genes with certain environmental factors. Mothers’ knowledge about risk factor of cleft lip and palate may promote better health-related behavior in their pregnancy by increasing the understanding about the risk factor. Unfortunately, until now there is still limited data about this. The purpose of this study was to determine the knowledge of pregnant women about risk factor of cleft lip and palate. This was a descriptive study that used the survey method. This study was conducted using a questionnaire distributed to 67 pregnant women (n = 67). The questionnaire consisted of 13 validated questions. The results of this study found that 10.4% of the respondents had good knowledge, 32.8% of the respondents had moderate knowledge and 56.7% of the respondents had poor knowledge. The overall knowledge of the pregnant women about risk factor of cleft lip and palate at Puskesmas Mutiara Asahan fell in the low category.
Implementation of teledentistry during the COVID-19 pandemic at Bandung community health centers
Authors: Assagaff Syarifa Salsabila , Suryanti Netty , Setiawan Asty Samiaty
Published: May 2023

Teledentistry has gained an increasing popularity among dentists as an alternative innovative solution to minimize the risk of the transmission of COVID-19 and other infections. Dentists at the Bandung community health center have started implementing teledentistry since the government issued a reference for dental and oral health services during the pandemic. The purpose of this study was to analyze the implementation of teledentistry in community health centers based on the references issued by the government. The population consisted of dentists who implemented teledentistry during the COVID-19 pandemic at the Bandung community health centers. There were 26 respondents as the research samples who were selected using a non-probability sampling technique. This was cross-sectional descriptive research which used an online questionnaire regarding the implementation of teledentistry based on the Technical Guidelines for Dental and Oral Health Services from the Ministry of Health of the Republic of Indonesia. The implementation of teledentistry includes teleconsultation, telediagnosis, teletriage, telemonitoring, teleeducation, communication tools, provision of prescriptions and referrals, service fees, and medical records. The data analysis was carried out by presenting the results of the teledentistry implementation, namely the types of teledentistry implemented by the dentists were teleconsultation 100%, telediagnosis 92.3%, teletriage 76.9%, telemonitoring 7.7%, teleeducation 92.3%; 100% carried out teledentistry via short messages, 76.9% had given prescriptions, and 80.7% had given referrals, 84.6% did not charge any service fee, and only 57.6% recorded medical records. The implementation of the teledentistry services during the COVID-19 pandemic at the Bandung Community Health Centers has not been optimal because the regulation has not been well socialized. In addition, there has been no legal certainty and laws governing teledentistry in Indonesia.
A histological evaluation of cellular response on bone regeneration scaffold
Authors: Dewi Anne Handrini , Listyarifah Dyah , Ardhani Retno , Jansen John
Published: May 2023

Biocompatibility testing for a new implant material is necessary before clinical use. The materials for bone scaffolding must also go through biocompatibility tests both in vitro and in vivo. The purpose of this study was to compare different staining methods in histological preparations to assess the biocompatibility of the material to tissues. Twenty Wistar rats (n= 20), aged 4 months, males, weighing about 250-350 g were divided into 2 research groups, namely sub-cutaneous and bone implantation for 3, 14, and 30 days. The sample was a biodegradable material with gypsum and calcium carbonate as the basic ingredients. Histological stains were prepared in several ways using Hematoxylin Eosin (HE), Mallory, Toluidine Blue, Tartrate-resistant acid phosphatase polyclonal antibody (TRAP), and Chromogen 3,3 diaminobenzidine (DAB) after pre-performing a decalcification process with ethylenedinitril-o-tetra-acetic acid (EDTA). The observation was done using magnification ranging from 10X10 to 100X10 with a light microscope (Nikon eclipse E600) and OptiLab viewer. The results were displayed in the form of descriptions of images generated from different staining methods. Staining by the HE method is most often chosen because it is cheap and easy but the other staining methods such as Toluidine Blue, Mallory, and TRAP show better contrast. Tissue staining techniques with immunohistochemistry (DAB, VEGF) are used to evaluate cell and tissue responses by identifying specific proteins present.
Treatment of temporomandibular joint trauma following odontectomy
Authors: Ruspita Intan , Dipoyono Haryo Mustiko
Published: May 2023

Temporomandibular Joint Disorder (TMD) is a non-dental musculoskeletal disorder that has a complex and multifactorial etiology. The most frequent symptoms are pain in the masticatory muscles, in front of the ears, and in the temporomandibular joint (TMJ); this disorder can also be accompanied by clicking sounds and locking. This study aimed to present a case report of temporomandibular joint trauma following odontectomy. A 22-year-old patient came with some complaints, namely pain in the TMJ, a clicking sound when opening and closing the mouth, and limited mouth opening. The symptoms started when the patient underwent odontectomy on all the four third molars, causing tightness around the jaw, pain, and clicking. However, she did not seek any treatment for these conditions until the pain became worse and disturbed her activities. The patient had to deal with limited mouth opening and severe migraines up to twice a day. During an examination, the patient was able to open her mouth without pain only 25 mm in width, with a maximum mouth opening of 35 mm. The therapy was done by constructing a 4-mm stabilization splint and educating the patient on how to reduce the pain. In fact, 2 months after the treatment and the use of stabilization splints, her complaints of TMJ pain and clicking sounds decreased, her mouth opening increased, and the migraines never came back. In this case, non-invasive treatment as the first-line therapy in patients with disc displacement with reduction and arthralgia can reduce the joint pain symptoms, and some of the symptoms have even disappeared.
Impregnation of various fiber tapes toward mechanical properties of dental fiber-reinforced composites
Authors: Sunarintyas Siti , Irnawati Dyah , Harsini Harsini , Rinastiti Margareta , Nuryono Nuryono
Published: May 2023

Synthetic dental fiber tape for fiber reinforcement (FRC) restoration is relatively costly and its availability is still limited in Indonesia, so natural dental fibers have been used as an alternative material. The aim of this study was to assess the effect of impregnation of various fiber tape toward the flexural strength and hardness of FRC. The materials used were natural Bombyx mori silk fibers (Indonesia), dental polyethylene tape (Construct Kerr, USA), dental Quartz tape (Quartz Splint UD, France), dental E-glass tape (Everstick TM, GC, Japan), silane coupling agent (Ultradent, Jordan), and composite resin (Denfil-Flow, USA). Five groups of samples consisted of FRC with various fiber tapes were prepared: unidirectional-silk, braided-silk, quartz, polyethylene, and E-glass. The five groups of FRC were tested to determine the flexural strength and hardness. The results were analyzed by one-way ANOVA, followed by LSD test. The results showed that the highest flexural strength was in the quartz group (496.84 ± 109.14 MPa), while the lowest was in the braided-silk group (139.39 ± 4.30 MPa). The highest hardness property was in the unidirectional-silk group (141.29 ± 25.17 VHN), while the lowest was in the braided-silk group (139.39 ± 4.30 VHN). The ANOVA showed that various fiber tapes significantly influenced the flexural strength and hardness of FRC (p < 0.05). The LSD showed that the unidirectional-silk, braided-silk, and polyethylene groups demonstrated no significant difference. The LSD for hardness showed that the unidirectional-silk group had a significant difference with the other groups (p < 0.05). It can be concluded that various fiber tapes influenced the flexural strength and hardness of FRC. Natural silk fibers showed comparable flexural strength and hardness with the other fiber tapes.
Comparison of fracture resistance of teeth with prepared protaper next, protaper gold, and hyflex CM rotary files
Authors: Rinastiti Margareta , Widyastuti Andina , Hadriyanto Wignyo
Published: May 2023

Preparation of the root canal system is a crucial step in root canal treatment. Endodontically treated teeth differ structurally from healthy, untreated teeth. This can lead to root cracking by creating pressure on the canal wall, reducing the fracture resistance of the tooth. Different designs, including cross-sectional shape, tip, taper, flute, radial land, helix angle, rake angle, and pitch, can influence the outcome of the root canal preparation and the risk of root fracture. The purpose of this study was to evaluate the fracture resistance of teeth after root canal preparation using three different NiTi rotary files: ProTaper Next (PN), ProTaper Gold (PG), and HyFlex CM (HC). Thirty premolars with a single and straight root canal were decoronated at the cementoenamel junction, leaving 14 mm of the root. The subjects were divided into 3 groups. Group 1 (n = 10) was prepared using PN, group 2 (n = 10) was prepared using PG, and group 3 (n = 10) was prepared using HC. After instrumentation and irrigation, the specimens were subjected to a continuous vertical compressive force (crosshead-speed of 2.28 mm/sec) in order to record the force (in newtons) until root fracture. To describe the surface characteristic of the dentinal root after the preparation, a section fragment from the apical third of the specimens was observed using a scanning electron microscope (SEM) at 2500x magnification. The micrographs were analyzed according to the Hulsman’s method. The results demonstrated that there was a statistically significant difference in root fracture resistance among the three groups. (p = 0.043). The LSD post hoc test indicated that HC showed a higher root fracture resistance (p < 0.05) compared to both PN and PG. In conclusion, the different file systems of PN, PG, and HC instruments generate different root fracture resistance of teeth. In comparison to PN and PG, HC instruments tend to result in increased fracture resistance.
Studi Perilaku Pencarian Informasi Kesehatan oleh Generasi Z Terkait Vaksinasi Covid-19
Authors: Hisan Urfa Khairatun
Published: May 2023

Di Daerah Istimewa Yogyakarta (DIY), jumlah peserta vaksin dosis 3 hanya sebanyak 27.31% dari target sasaran vaksinasi. Informasi memiliki peran penting dalam pengendalian COVID-19. Disinformasi mengenai COVID-19 mempengaruhi penerimaan seseorang terhadap vaksinasi. Generasi Z merupakan individu yang lahir antara tahun 1995 dan 2012. Studi ini bertujuan untuk mengeksplorasi bagaimana perilaku generasi Z di DIY dalam pencarian informasi vaksinasi COVID 19. Studi kuantitatif ini menggunakan teknik convenience sampling. Responden merupakan generasi Z di DIY. Pengumpulan data dilakukan menggunakan google form dan didapatkan 129 responden yang memenuhi kriteria. Hasilnyaadalah 81.0% responden melakukan pencarian informasi kesehatan terkait vaksinasi COVID-19 selama <1 jam dalam sehari. Motivasi utama responden adalah karena mereka berencana mendapatkan vaksinasi. 83.72% orang menggunakan media sosial sebagai sumber informasi, dan Instagram merupakan media sosial yang paling banyak digunakan (85.27%). 60.47% orang percaya dengan informasi yang didapatkan dan 71.32% orang merasa mampu membedakan informasi yang valid dan invalid. Kesulitan yang paling sering ditemui disebabkan oleh adanya penyebaran berita palsu (55.04%).  Generasi Z menggunakan media sosial sebagai sumber informasi utama dalam memperoleh informasi vaksinasi COVID-19 dengan alasan kemudahan akses. Namun, kemudahan tersebut juga menimbulkan tantangan yang sering ditemui berupa penyebaran berita palsu.
Perkembangan Perpustakaan Tradisional Menuju Digital
Authors: Tjiptasari Fitriana
Published: May 2023

Perkembangan teknologi komunikasi dan informasi secara bertahap mengubah model operasi kerja dan layanan di semua aspek. Dalam bidang perpustakaan dan informasi, evolusi teknologi telah menyebabkan pergeseran perpustakaan dari perpustakaan dengan konsep tradisional ke perpustakaan dengan konsep digital. Pergeseran tersebut sekaligus menyebabkan perubahan paradigma cara berfikir manusia, yaitu paradigma di mana orang dapat mengakses dan berinteraksi dengan layanan perpustakaan dan informasi dari manapun, kapanpun, dan di manapun. Peran perpustakaan mengalami tantangan, penambahan pesaing, tuntutan dan tentu saja harapan baru. Pergeseran perpustakaan memungkinkan perpustakaan mendesain ulang layanan dan produk informasinya untuk menambah nilai layanan, untuk memenuhi kebutuhan pemustaka. Pemustaka tidak hanya puas dengan bahan materi cetak, namun mereka juga mendapatkan layanan dan informasi dari sumber elektronik yang lebih dinamis.
Perubahan Pola Perilaku Pencarian Informasi Kesehatan Selama Pandemic Covid-19
Authors: Nugroho Arif Tono
Published: May 2023

Penyebaran virus corona sepanjang tahun 2019-2022 mengubah perilaku kehidupan sehari-hari masyarakat global. Tidak terkecuali pada masyarakat Indonesia, wabah covid-19 mengharuskan semua kalangan masyarakat untuk beradaptasi dengan kebiasaan baru. Menerapkan protokol kesehatan ditempat umum merupakan sebuah suatu kewajiban yang harus dipenuhi. Seiring dengan tingginya eskalasi tren kasus positif covid-19, semua kegiatan sosial kemasyarakatan dilakukan secara virtual. Penyedia layanan informasi kesehatan sebagai platform promosi kesehatan juga dituntut untuk merubah pola penyebaran informasi dengan menerapkan digitalisasi teknologi informasi. Era digital memungkinkan promosi kesehatan melalui platform online secara efektif dan efisien. Sepanjang kuartal I-IV tahun 2021 telah terjadi kenaikan unduhan aplikasi kesehatan dan kebugaran mobile. Hal tersebut sebagai dampak dari meningkatkan kepedulian masyarakat terhadap pola hidup sehat selama pandemi. Selain itu akses terhadap websites yang menyediakan informasi seputar kesehatan (artikel kesehatan) juga melonjak tajam. Informasi kesehatan sebagai salah satu referensi media edukasi masyarakat dituntut untuk melakukan transformasi digital. Perkembangan teknologi informasi yang terus berkembang pesat memaksa para stake holder dibidang kesehatan untuk mengikuti arus perkembangan tersebut. Sehingga promosi dan pendidikan kesehatan mampu beradaptasi dengan berbagai bentuk kecanggihan teknologi digital yang membuat sebuah informasi kesehatan berada dalam satu genggaman tangan dan tanpa batas.
Program Donasi Buku sebagai Upaya untuk Meningkatkan Minat Baca Masyarakat
Authors: Uki Emilyasanti Martina
Published: May 2023

Artikel ini bertujuan untuk mendeskripsikan program donasi buku Perpustakaan Universitas Gadjah Mada (Perpustakaan UGM) sebagai upaya untuk mendukung peningkatan minat baca masyarakat. Kebiasaan membaca di kalangan masyarakat Indonesia dinilai masih rendah. Salah satu faktor yang mempengaruhi rendahnya minat baca masyarakat Indonesia adalah kurangnya ketersediaan buku bacaan dan distribusinya yang kurang merata. Salah satu solusi permasalahan tersebut adalah melalui donasi buku. Sebagai bentuk pengabdian pada masyarakat, Perpustakaan UGM melaksanakan program donasi buku untuk memfasilitasi perpustakaan atau instansi lain yang memerlukan bahan bacaan. Donasi buku Perpustakaan UGM diwujudkan melalui Program Book Donation @UGMLibrary. Program tersebut bertujuan untuk menghubungkan para donatur yang akan menyumbangkan buku-bukunya dengan penerima donasi yang mengajukan proposal kepada Perpustakaan UGM. Masyarakat dan organisasi yang telah menerima manfaat Program Book Donation @UGMLibrary, meliputi: 1) kelompok/tim KKN-PPM UGM; 2) sekolah; 3) Taman Bacaan Masyarakat (TBM); dan 4) organisasi non pemerintah atau non govermental organization (NGO). Program Book Donation @UGMLibrary dapat menjadi sarana untuk mendukung upaya peningkatan minat baca masyarakat melalui pendistribusian buku hasil donasi tersebut untuk dimanfaatkan sebagai bahan bacaan.
Inovasi Sistem Layanan Books Delivery di Perpustakaan FEB UGM
Authors: Widarti Rini
Published: May 2023

Pandemi covid 19 tidak serta merta membawa dampak negatif bagi perpustakaan. Banyak inovasi-inovasi yang lahir pada masa pandemi ini, termasuk salah satunya adalah Inovasi Layanan Books Delivery yang ada di Perpustakaan Fakultas Ekonomika dan Bisnis Universitas Gadjah Mada (Perpustakaan FEB UGM). Inovasi layanan ini menjawab tantangan pustakawan dalam melayani peminjaman dan pengembalian koleksi di perpustakaan dimana pada masa pandemi Covid 19 ini semua kegiatan dibatasi, pemanfaatan koleksi tidak maksimal karena banyak buku yang tidak bisa diakses oleh sivitas akademika. Di sinilah pustakawan dituntut untuk berinovasi dalam melayani pengguna, hingga lahirlah inovasi sistem layanan Books Delivery ini.
Introduction to the Development Trend of New Energy Vehicle Industry
Authors: Cui Xilong
Published: May 2023

So far, the vast majority of cars on the market are still cars that consume gasoline and diesel conventional fuels for power. In people’s deep-rooted thinking, the promotion of new energy vehicles and the establishment of the new energy vehicle industry chain require the inclination of national policies, thus it seems that the development of the new energy vehicle market still needs a long period of policy guidance and technological breakthroughs. The following is a brief description of why new energy vehicles should be developed, the current situation of new energy vehicles in various countries and China’s policy support for new energy vehicles.
Cholecystokinin receptors in GtoPdb v.2023.1
Authors: Beinfeld Margery , Chen Quan , Gao Fan , Liddle Roger A. , Miller Laurence J. , Rehfeld Jens
Published: May 2023

Cholecystokinin receptors (nomenclature as agreed by the NC-IUPHAR Subcommittee on CCK receptors [90]) are activated by the endogenous peptides cholecystokinin-8 (CCK-8), CCK-33, CCK-58 and gastrin (gastrin-17). There are only two distinct subtypes of CCK receptors, CCK1 and CCK2 receptors [64, 124], with some alternatively spliced forms most often identified in neoplastic cells. The CCK receptor subtypes are distinguished by their peptide selectivity, with the CCK1 receptor requiring the carboxyl-terminal heptapeptide-amide that includes a sulfated tyrosine for high affinity and potency, while the CCK2 receptor requires only the carboxyl-terminal tetrapeptide shared by each CCK and gastrin peptides. These receptors have characteristic and distinct distributions, with both present in both the central nervous system and peripheral tissues.
G protein-coupled estrogen receptor in GtoPdb v.2023.1
Authors: Filardo Edward J. , Prossnitz Eric R.
Published: May 2023

The G protein-coupled estrogen receptor (GPER, nomenclature as agreed by the NC-IUPHAR Subcommittee on the G protein-coupled estrogen receptor [26]) was identified following observations of estrogen-evoked cyclic AMP signalling in breast cancer cells [2], which mirrored the differential expression of an orphan 7-transmembrane receptor GPR30 [6]. There are observations of both cell-surface and intracellular expression of the GPER receptor [29, 34]. Selective agonist/ antagonists for GPER have been characterized [26]. Antagonists of the nuclear estrogen receptor, such as fulvestrant [11], tamoxifen [29, 34] and raloxifene [25], as well as the flavonoid 'phytoestrogens' genistein and quercetin [18], are agonists of GPER. Reviews of GPER pharmacology have been published [26]. The roles of GPER in (patho)physiological systems throughout the body (cardiovascular, metabolic, endocrine, immune, reproductive) and in cancer have also been reviewed [26, 27, 20, 17, 9]. The GPER-selective agonist G-1 is currently in Phase I/II clinical trials for cancer (NCT04130516).
Kisspeptin receptor in GtoPdb v.2023.1
Authors: Davenport Anthony P. , Maguire Janet J. , Mead Edward J. , Pawson Adam J
Published: May 2023

The kisspeptin receptor (nomenclature as agreed by the NC-IUPHAR Subcommittee on the kisspeptin receptor [11]), like neuropeptide FF (NPFF), prolactin-releasing peptide (PrP) and QRFP receptors (provisional nomenclature) responds to endogenous peptides with an arginine-phenylalanine-amide (RFamide) motif. kisspeptin-54 (KP54, originally named metastin), kisspeptin-13 (KP13) and kisspeptin-10 (KP10) are biologically-active peptides cleaved from the KISS1 (Q15726) gene product. Kisspeptins have roles in, for example, cancer metastasis, fertility/puberty regulation and glucose homeostasis.
Motilin receptor in GtoPdb v.2023.1
Authors: Davenport Anthony P. , Kitazawa Takio , Sanger Gareth
Published: May 2023

Motilin receptors (provisional nomenclature) are activated by motilin, a 22 amino-acid peptide derived from a precursor (MLN, P12872), which may also generate a motilin-associated peptide. There are significant species differences in the structure of motilin and its receptor, and in the functions of motilin. In humans and large mammals such as dog, activation of these receptors by motilin released from endocrine cells in the duodenal mucosa during fasting, induces propulsive phase III movements. This activity is associated with promoting hunger in humans. In humans and other mammals drugs and other non-peptide compounds which activate the motilin receptor may generate a more long-lasting ability to increase cholinergic activity within the upper gut, to promote upper gastrointestinal motility; this activity is suggested to be responsible for the gastrointestinal prokinetic effects of certain macrolide antibacterials (often called motilides; e.g. erythromycin, azithromycin), although for many of these molecules the evidence is sparse. Relatively high doses may induce vomiting and in humans, nausea.
Neuropeptide FF/neuropeptide AF receptors in GtoPdb v.2023.1
Authors: Mollereau-Manaute Catherine , Moulédous Lionel , Roumy Michel , Tsutsui Kazuyoshi , Ubuka Takayoshi , Zajac Jean-Marie
Published: May 2023

The Neuropeptide FF receptor family contains two subtypes, NPFF1 and NPFF2 (provisional nomenclature [12]), which exhibit high affinities for neuropeptide FF (NPFF, O15130) and RFamide related peptides (RFRP: precursor gene symbol NPVF, Q9HCQ7). NPFF1 is broadly distributed in the central nervous system with the highest levels found in the limbic system and the hypothalamus. NPFF2 is present in high density in the superficial layers of the mammalian spinal cord where it is involved in nociception and modulation of opioid functions.
Melanoma Cancer Detection using Deep Learning Methods
Authors: Niranjan Nadipelli , Akshitha Enagandula , Shruthi Daramalla , Saradhi Dr. Vijaya
Published: May 2023

Abstract: One of the most hazardous types of skin cancer is melanoma because it spreads quickly and accounts for the majority of skin cancer fatalities because, if untreated, it is considerably more likely to migrate to other body regions. If melanomas are not found in their early stages, they cannot be treated.Therefore, melanoma treatment relies heavily on early detection. Melanoma is difficult to detect since it frequently looks benign and is misdiagnosed as such. Previous attempts to use neural networks to detect melanoma using the ABCD worked best with small datasets and low accuracy. The cloud technique requires a significant amount of time to train the dataset's images. The ensemble approach does not perform any image preprocessing, hence the final findings fall short of expectations.It is suggested to use an upgraded encoder-decoder network with separate encoder and decoder sub-networks connected by a number of skip paths. For the ISIC dataset and PH2 dataset, preprocessing strategies for pictures are suggested that aid to achieve high sensitivity and high specificity in lesion border segmentation to get greater accuracy compared to existing models.
Advanced Audio Signal Processing for Speaker Recognition and Sentiment Analysis
Authors: Auti Dr. Nisha , Pujari Atharva , Desai Anagha , Patil Shreya , Kshirsagar Sanika , Rindhe Rutika
Published: May 2023

Abstract: Automatic Speech Recognition (ASR) technology has revolutionized human-computer interaction by allowing users to communicate with computer interfaces using their voice in a natural way. Speaker recognition is a biometric recognition method that identifies individuals based on their unique speech signal, with potential applications in security, communication, and personalization. Sentiment analysis is a statistical method that analyzes unique acoustic properties of the speaker's voice to identify emotions or sentiments in speech. This allows for automated speech recognition systems to accurately categorize speech as Positive, Neutral, or Negative. While sentiment analysis has been developed for various languages, further research is required for regional languages. This project aims to improve the accuracy of automatic speech recognition systems by implementing advanced audio signal processing and sentiment analysis detection. The proposed system will identify the speaker's voice and analyze the audio signal to detect the context of speech, including the identification of foul language and aggressive speech. The system will be developed for the Marathi Language dataset, with potential for further development in other languages.