Publication Search

 This study aims to (1) reveal Mathematic learning through Google Classroom media in the midst of the Covid-19 pandemic, (2) find out the supporting and inhibiting factors for Mathematic learning through Google Classroom media in the midst of the Covid-19 pandemic, (3) school solutions and efforts and stakeholders to achieve Mathematic learning goals through Google Classroom media in the midst of the Covid-19 pandemic. The researcher used descriptive qualitative method. Research data obtained through in-depth interviews, observation, and documentation. The informants in this study were theprincipal, the head of the curriculum, Mathematic educators, homeroom teachers, class X students and guardians of students. Researchers used data analysis techniques, including data reduction, data presentation, drawing conclusions and checking the validity of the data. The results showed that, (1) PAI learning management in the evaluation of psychomotor aspects has not been implemented, (2) learning supporting factors, namely the existence workshops oflearning Google Classroom, strong signals and internet quotas, students having smartphones, and guardians of students being able to monitor and control students. learn while at home. Meanwhile, the inhibiting factors for learning are bad signals due to natural conditions and the concentration of students is easily disturbed, (3) the application of combined Mathematic learning, namely 50% face-to-face and 100% online requires good synergy between students, educators, families and communities. in order to achieve Mathematic learning objectives in the midst of the Covid-19 pandemic.   Keywords: , , 

This activity aims to provide an overview of early childhood language development from learning stimulation activities through interactive video learning media at the Denali Development Center (DDC). Interactive video was chosen because it is considered very suitable for the characteristics of early childhood who tend to get bored easily, have low focus and concentration, and tend to be active and find it difficult to sit still. Based on the results of observations that have been made at DDC found problems where some children aged 1-3 years, experience speech delays where children cannot pronounce vocabulary correctly when communicating, the vocabulary mastered by children is still small, children cannot compose simple sentences when communicating, children have not been able to provide answers to questions that are given quickly and straightforwardly and the child has not been able to listen properly. From the results of the learning activities that have been carried out during the service period, gradually the child experiences significant language development where the child is quiet and never makes a sound or gives a slow reaction, this child begins to make sounds such as laughter or bubbling. And other children who cannot pronounce words correctly, gradually these children can say some words well and their meanings can be understood and the vocabulary they master also develops. Therefore providing stimulation to children is very important to reach this stage of development. Children who receive less stimulation tend to have problems and obstacles in their development.  

Waste oil treatment through the distillation method with the addition of sulfuric acid and sodium hydroxide media was successfully carried out. The purpose of this study was to obtain quality diesel fuel, study the effect of the concentration of chemical media used, and determine the effectiveness of using spritus substitute fuel. Waste oil treatment is carried out using a distillation method that involves the process of precipitation, filtration and addition of acid and alkaline media. After going through the processing process, the resulting products are analyzed and tested physically and chemically such as density, specific gravity, flash point, fire point, calorific value, and kinematic viscosity. The results of physical test research and parameters were obtained at optimum conditions of use using H2SO4 and NaOH concentrations of 6%. Physical tests obtained brownish-yellow fuel while parameter tests on density tests were 817 km/m3, specific gravity was 0.801, flash point and fire point were 61°C and 72°C,while kinematic viscosity was 4.99 m2/s. The results of this test show that the fuel obtained tends to have diesel quality, so that the fuel has the potential and effectiveness to be used as a substitute for spritus in patching motorcycle tires

Acne is a skin disease due to chronic inflammation with complex pathogenesis. The public has empirically used the white plant to treat wounds on the skin, it contains flavonoids, saponins, and tannins which can protect the skin from bacteria and can inhibit bacterial growth. This study aims to test the antibacterial activity against Propionibacterium acnes. The ethanol extract of Putihan leaves was obtained by maceration using 96% ethanol solvent, formulated and evaluated for facial soap gel preparations of ethanol extract of Putihan leaves with various extract concentrations of 0% (F0), 10% (F1), 13% (F2), and 15% (F3) which testing antibacterial activity against Propionibacterium acnes. The results showed that the antibacterial activity of the facial soap gel preparation of ethanol extract of Putihan leaves with a concentration of 10% had an inhibition of 8.4 ± 0.20 mm, 13% had an inhibition of 9.5 ± 0.23 mm and 15% had an inhibition of 10.6 ± 0.64mm. Based on this description, the resulting gel preparation has antibacterial activity against Propionibacterium acne. The three formulas are included in the medium inhibition zone category, but the one with the broadest inhibition zone is at a concentration of 15%.  

Secang wood from the Caesalpiniacea tribe which was commonly found in Indonesia had secondary metabolites as antibacterial. This study aims to formulate secang wood ethanol extract into a transparent solid soap that is able to meet quality requirements. This research method was begin with formulating the extract into a transparent solid soap preparation with 3 concentrations, namely 5g (F1), 10g (F2), and 15g (F3). Furthermore, appearance tests, foaming ability, free alkali, free fatty acids, irritation, hedonic, and pH were carried out. The results of the research on transparent solid soap gave different colors for each concentration, namely transparent bright red (F1) and transparent dark red (F2 and F3) which were stable for 4 weeks; the foam power test shows a height of 4.5-6.5 cm after 10 minutes; free alkaline test shows a value of 0.07-0.08%; free fatty acid test 0.16%, and pH test 8.96-9.66 at week 4; and transparent solid soap does not cause irritation, attractive and liked by volunteers

This community service aims to develop and increase students' creativity by introducing kirigami, namely folding and cutting paper to form letters of the alphabet. The tools and materials used are paper, scissors and cutter. This activity was carried out on Thursday, September 15 2022 at MIS Halwani Gebang, Langkat Regency. The benefit of carrying out this activity is to improve the mathematical concept of geometry through the processes of folding, lining and cutting; improve students' fine motor skills by training their fingers in the process of folding paper; train students' concentration; foster a sense of community care by taking part in activities organized by the village, implementing kirigami skills in making backgrounds, congratulations, and so on; increasing students' creativity in the art of paper folding (kirigami).

This study aims to determine the impact of full day school on student learning concentration at SMA Negeri 4 Pariaman. This type of research is descriptive qualitative research where researchers use observation and interview methods. It appears that students are not effective in adjusting themselves to extra hours throughout the day. One of them is the lack of school during the day, students are very tired. Schools that carry out full day school programs have an impact on students, namely physical exhaustion, mental fatigue, and emotional exhaustion. Students also feel bored and bored, bored in learning and arise boredom and fatigue resulting in a lack of student learning concentration during the learning process. Students who usually go to school in the afternoon now go home in the afternoon, plus the assignments or homework given by the subject teacher are too excessive, this has an impact on students being unable to concentrate and forget easily. At the beginning of the full day school program at school, many students complained, were tired, several weeks of full day school, many students did not attend due to illness and some were absent without explanation, each class must have been absent every day, more than five people . So the conclusion is that full day school has an impact on student learning concentration at SMA Negeri 4 Pariaman.

Pharmaceutical biotechnology products in the form of hand washing soap with an active ingredient of telang flower kombucha fermented solution have the potential to inhibit the growth of Staphylococcus capitis, Bacillus cereus, and Pantoea dispersa bacteria. The aim of this study was to formulate and prepare hand washing soap with an active ingredient in a solution of seagrass kombucha fermentation to inhibit the growth of Staphylococcus capitis, Bacillus cereus, and Pantoea dispersa. This research is an experimental laboratory by making 4 hand washing soap preparations, which consist of a hand washing soap base without an active substance. Hand washing soap base added to a solution of fermented butterfly pea flower kombucha at a sugar concentration of 20%, 30%, and 40%. Disc diffusion is a method used to calculate the average diameter of the inhibition zone for the three tested bacterial growth. The research data obtained were analyzed through one way ANOVA and post hoc analysis. The results of the ANOVA test proved that the obtained p value <0.05, which means that there were significant differences in the three treatment groups in inhibiting the growth of the three test bacteria. The post hoc analysis results also proved that 40% concentration was the best concentration in inhibiting the growth of the three tested bacteria, namely 18.34 mm (S. capitis/strong), 16.39 mm (B. cereus/strong), and 13.33 mm (P. disperse/strong).

Streptococcus mutans naturally occurs in the human oral cavity, is a microorganism that plays an important role in the initiation of dental caries. One of the efforts to prevent dental caries is the use of natural ingredients that contain antibacterial substances that can interfere with the growth or kill bacteria. Nutmeg is a natural ingredient that has antibacterial properties. Bioactive compounds in nutmeg seeds have antibacterial properties. This research aimed to determine the formulation and concentration of nutmeg seed extract which has antibacterial activity against Streptococcus mutans. The type of research used is a laboratory experiment with a post test only group design. The treatment group used purified extract of nutmeg seeds with concentrations of 25%, 20%, 15%, 10%, 7.5%, 5.0%, 2.5%, 1.25%, the positive control group used mouthwash I, T and L. The test was carried out three repetitions at each concentration, then the inhibition zone was measured using the well diffusion method. Antibacterial activity testing was carried out using the well method, the data were analyzed using the Shapiro-Wilk test, the Levene test, the one way annova test and the PST hock test. Obtained the average inhibition of nutmeg seeds against Streptococcus mutans at a concentration of 25% (18.33 mm). 20% concentration (17.16 mm), 15% concentration (16.16 mm), 10% concentration (14.66 mm), 7.5% concentration (13.33 mm), 5% concentration (6.66 mm ), the concentration of 2.5% (2.6 mm) and the smallest concentration of 1.25% had no inhibition (0 mm), while in the control group I (4 mm), T (3 mm) and L (2 mm). The higher the concentration of purified extract of nutmeg seeds, the higher the antibacterial activity against Streptococcus mutans. further research on the concentration of nutmeg seed extract preparations was carried out in vivo tests on experimental animals in order to obtain purified extract preparations of nutmeg seeds that are safe and can be an alternative choice in maintaining oral health.

Abstract The purpose of carrying out this activity is to increase the awareness of students of SMK N 1 Siatas Barita about the influence of promiscuity for the future. This research was conducted by making observations first then the observation data were collected to carry out seminar planning, then the educational seminar actions. The subject of this seminar is students of SMK Negeri 1 Siatas Barita. This activity is carried out in a day with 3 seminar sessions. Based on the Christian religious education seminar held at SMK Negeri 1 Siatas Barita, the application of the method is indeed able to increase student concentration by capturing the attention of students and thus students are able to see and analyze events that occur, even students are able to create ideas. Regarding the material for the "Say No To Promiscuity" seminar that was staged, this is evident from the interactive dialogue between the students and the moderator. The demonstration method in seminar activities or in the learning process cannot make the atmosphere fluid, but more than that the demonstration method can train students' concentration by inviting students to see, study, and compare the theory they get with the real situation, therefore Indirect demonstration methods also train students to have the ability to analyze an incident.

Article history: Received 30 Mei 2020 Received in revised form 2 Juni 2020 Accepted 10 Juni 2020 Available online 12 Juni 2020 ABSTRACT Alcohol is the common name for organic compounds that have a hydroxyl group attached to carbon and hydrogen atoms. The alcohol that is commonly found in liquor is ethyl alcohol or it is also called ethanol, but it is usually referred to as alcohol alone. Drinks with an alcohol content of 40% can lose consciousness, leading to accidents for alcohol-affected drivers. To detect alcohol in the body using an alcohol tester. Researchers tried to make a measuring instrument for alcohol levels in the body using several components such as Arduino nano, MQ 3 sensor, OLED, charger module, battery, resistor, push button, and buzzer. The design of a portable alcohol level detector through breath can work well, namely the results of the reading of alcohol levels in the body by the MQ-3 sensor through the breath and displayed on the Oled Display in units of% BAC (Blood Alcohol Concentration), in the sample comparison of the alcohol level reading between Final project tool with a comparison tool alcohol tester obtained the percentage difference in an average of 0.01% BAC. Keywords: Alcohol, Arduino Pro Micro, MQ-3 Sensor, OLED, Charger Module, Battery, Resistor, Push Button, and Buzzer

The  purpose  of  activity  is  to  introduce  that  the public  must  be familiar with  current  technological developments,  and  how  technology  can  contribute  to  the  business  world.  The  activity   also  opened  up insight  and horizons  for  thinking  about  blockchain  technology  called  mass technology,  because  the PKM  activity  also  brought business  partners  from  PT  Alko  Sumatra  International. The results of this activity can provide new enthusiasm, especially the community  so that products marketed through FB, WA and IG can be effective, it is necessary to carry out ongoing evaluations  by always  presenting  value  in every business  they run, then business  people  must  know what is called go digital or digital transformation, so that va lue can come with clear measurements  and make financial planning whose turnover   increases   by   15-20%.  If  it  is  still  not  achieved,   then  it  is  necessary   to  carry  out  a  clear  strategy   of concentration in a certain area. Tujuan   kegiatan memperkenalkan    bahwa   masyarakat    harus   mengenal perkembangan  teknologi   saat  ini,  dan  bagaimana   teknologi   mampu  memberikan  kontribusi  dalam  dunia  usaha. Kegiatan  juga  membukakan  wawasan  dan cakrawala  berpikir  terhadap  teknologi blockchain yang disebut teknologi masa,   karena   Kegiatan   PKM juga   menghadirkan   mitra   bisnis   dari   PT   Alko   Sumatera   International. Hasil   kegiatan   ini   dapat   memberikan   semangat   baru   terutama   masyarakat    agar  produk  yang dipasarkan melalui FB, WA dan IG bisa efektif, maka perlu dilakukan evaluasi secara berkelanjutan  dengan selalu menghadirkan  value dalam setiap usaha yang dijalankan, selanjutnya  pelaku bisnis harus mengenal yang  namanya go digital  atau  digital  transformation,  agar value dapat hadir dengan pengkuran yang jelas dan membuat perencanaan keuangan  yang  omset   meningkat  sebesar 15 -20%. Jika  masih  belum  tercapai  maka  pelu  lakukan  strategi yang jelas konsentrasi  dalam area tertentu.

Graphic novel is one of many communication mediums with a combination of visual and verbal that mutually reinforces one another. This work remains a novel but uses the style of storytelling like a comic, using many illustrations. Graphic novels tell their stories from the beginning to the end, therefore graphic novels tend to be longer than comics. The content or quality of the story is different; graphic novel features a story with a more detailed content so that reading it requires serious concentration to think and understand what the creator is trying to convey.The graphic novel of Wali Songo's da'wah story, created by Gerdi Wirata Kusuma in 2015, presents nine Wali Songo stories, which are then selected into two stories to be studied, namely Sunan Kudus and Sunan Kalijaga. The graphic novel discusses the brief history of Wali Songo's life, including Wali Songo's propagation method in spreading the teachings of Islam.This research uses qualitative content analysis method, with Scott McCloud's comic theory, namely using comic element in the forms of image selection, selection of flow, and choices of words, moments, and frames. This identification is divided into two aspects; visual and verbal. Visual in the form of sequences of images, point of view, and graphics. Verbal in the form of narrative text that resides in column panels or word bubbles.The result of this research indicates that visual and verbal use are interrelated, such as the use of shots related to narration, the use of narration to mention information that can not be conveyed visually or visual expressions that can not be described verbally. This visual and verbal combination that mutually reinforces one another shows that this graphic novel is able to show the story of the history of Wali Songo's method in spreading teachings of Islam through assimilation of education and cultural arts with symbolic visual observations. The graphic novel of Wali Songo's da'wah story tries to show its history visually and verbally that is easy to understand and is able to become a part of medium of education.    

This research was carried out at the Laboratory of the Mathematics and Natural Sciences Faculty of the 1945 NTT Teachers' Association University from July to September 2022. With the aim of 1) to determine the effect of papaya leaf extract (Carica papaya) on the death of house flies (Musca domestica). 2) to determine the effectiveness of papaya leaf extract (Carica papaya) against the death of house flies (Musca domestica). The design used in this research was an experimental method for each papaya leaf extract concentration of 1%, 2% and 3% carried out 3 times. . The aim of the experiment was to provide accurate data on the death of house flies (Musca domestica) where the death of house flies that occurred in the study was due to the administration of papaya leaf extract. The results of the research showed that papaya leaf extract could kill house flies. This proves that papaya leaf extract is effective against the death of house flies. The appropriate concentration of papaya leaf extract for the death of houseflies from the tests that have been carried out is at a concentration of 1%, the lowest range and the highest range is 3%.

Lip balm is a compound applied to lips that serve as moisturizer and brightening. The purpose of research is to know the combination of squeeze fruits and lime as brightening the lips and to know the formulation of a finely tuned combination of cucumbers and lime. This method of study is a quantitative study method. This type of research includes a formulation of lip balm with a concentration of flavor (cucumis sativus l.) and lemon (citrus aurantifolia) concentrations of 5%, 6% and 7%. With the base material at a cacao and cera flava. Available physical quality checkups include organic, homogenity, ph, diffusion, stability, temperance, and irritation. Studies show that a thick-fruit cucumber and a lemon can be formulated into a willing lip balm with 5% concentrations (f1), 6% (f2), 7% (f3) and have met requirements for the coveted, sticky point and no skin. The characteristics of the cucumber and the lime that make a good lip balm ready is third preparation because more of the color on the lips shows brightness as well as moisture

This study aims to utilize rice washing wastewater as a potential raw material for bioethanol production using enzymatic hydrolysis and fermentation methods. The wastewater is treated with amylase enzyme to break down starch into simple sugars, which are then fermented using yeast to produce ethanol. The research involves optimizing process conditions such as temperature, pH, enzyme concentration, and fermentation time. The results indicate that rice washing wastewater has the potential to be an efficient raw material for bioethanol production. Thus, this study contributes to the development of renewable energy sources and the utilization of agricultural waste to create a more sustainable economic cycle.  

Liquid organic fertilizer from goat urine is a fertilizer that dissolves easily in the soil and carries important elements for soil fertility. Fertilizers an important role in increasing crop yields, especially in soils with low nutrient content. The aim of the study was to obtain the optimum dose of goat urine liquid organic fertilizer for cucumber growth and to obtain the optimum dose of goat urine liquid organic fertilizer for cucumber yield. This study used a completely randomized design  method and the treatment was goat urine liquid organic fertilizer (POC) consisting of 5 treatments, namely 0 ml/liter water, 50 ml/liter water, 100 ml/liter water, 150 ml/liter water, and 200 ml/liter of water. The administration of goat urine liquid organic fertilizer at a concentration of 200 ml/liter of water affected the cucumber growth variables, namely plant height, number of leaves, flowering age, and harvest age. Administration of goat urine liquid organic fertilizer at a concentration of 200 ml/liter of water affected the yield variables of cucumbers, namely number of fruit, fruit weight per fruit, fruit diameter, and fruit length.

Pumpkin (Cucurbita moschata) is an important vegetable because of its nutritional value and health benefits. This plant is a rich source of carotenoids, which are rich in water-soluble vitamins, phenolics, flavonoid polysaccharides, mineral salts, and vitamins, all of which are beneficial for health. Pumpkin fruit has a very thick and hard skin, so it can act as a barrier to the rate of respiration, the release of water through the evaporation process, and the entry of air that causes the oxidation process. The purpose of this study was to determine the antibacterial activity of pumpkin seed extract (curcubita moschata). ) against the inhibition of staphylococcus aureus bacteria by well diffusion method. This type of research is a true experimental laboratory using the well diffusion method. The ethanol extract of pumpkin seeds (curcubita moschata) which was tested using the well method was then divided into several concentrations including 10%, 15%, 20%, and 25%. On the NA media that has been made then smeared with Staphylococcus aureus bacteria which had been previously sterilized, then four wells were made in a petri dish after which pumpkin seed extract was added to each concentration. Chloramphenicol was used as a positive control as a positive control. It was then incubated at 37o for 24 hours, then the inhibition zone formed was then measured. The result of this research is pumpkin seed extract (curcubita moschata) has antibacterial activity in the presence of inhibition around the wells of each extract concentration. At a concentration of 10% extract with an inhibitory diameter of 19 mm, a concentration of 15% in an inhibitory diameter of 20 mm, a concentration of 20% in an inhibitory diameter of 21 mm and for a concentration of 15% with an inhibitory diameter of 24 mm, it can be concluded that the extract of pumpkin seeds (curcubita) moschata.) has antibacterial activity against Staphylococcus aureus.

Telang flower has the potential to inhibit the growth of Candida albicans, Malasezia furfur, Pitosporum ovale, and Aspergilus fumigatus through the kombucha fermentation biotechnology method. The purpose of this study was to determine the antifungal activity of telang flower kombucha at various concentrations of white sugar. The varying concentrations of granulated sugar used in this study were 20%, 30%, and 40% (w/v), each repeated 3 times. The positive control used was kombucha made from green tea. The negative control used was sterile distilled water. The well diffusion method is one of the methods used to test antifungal activity. The fementation of telang flower kombucha has overall antifungal activity. White sugar concentration of 40% kombucha telang flower was the best concentration in inhibiting the growth of fungi as a whole when compared to the concentration of white sugar kombucha telang flower of 20%, 30% and positive and negative controls.

The quality of coconut sap (nira) is a significant aspect of the manufacturing of palm sugar. Coconut nira deteriorates fast, and handling nira in the field is challenging due to the long duration of the tapping process, and coconut trees are high, making it tough to reach. The use of natural preservatives to nira help in the preservation of its quality prior to processing. The objectives of this study are to 1) develop a natural coconut nira preservatives formula from mangosteen yellow latex and 2) evaluate the dose of preservatives necessary to maximize nira's shelf life. The study employed a randomized complete analysis with four preservative concentrations of 0%, 1%, 1.5%, and 2%. and four different storage durations: zero hours, six hours, twelve hours, and twenty-four hours.  Chemical analysis of pH, total acid, total sugar, and reduced sugar was performed, as well as sensory evaluation. The study concluded that yellow mangosteen latex can help in the preservation of coconut nira. Preservative concentrations of 1.5% and 2% are still acceptable in 12 hours of storage. While a concentration of 1% is allowed for storage of up to 6 hours. If no preservatives are applied, nira should be processed shortly after harvesting. Nira's quality is deplorable after 24 hours of storage.