bluuebunny/crossref_metadata_2025 huggingface dataset:
Extended damage range of (Al0.3Cr0.2Fe0.2Ni0.3)3O4 high entropy oxide films induced by surface irradiation*
Authors: Zhang Jian-Cong , Sun Sen , Yang Zhao-Ming , Qiu Nan , Wang Yuan
Published: March 2020

Irradiation makes structural materials of nuclear reactors degraded and failed. However, the damage process of materials induced by irradiation is not fully elucidated, mostly because the charged particles only bombarded the surface of the materials (within a few microns). In this work, we investigated the effects of surface irradiation on the indirect irradiation region of the (Al0.3Cr0.2Fe0.2Ni0.3)3O4 high entropy oxide (HEO) films in detail by plasma surface interaction. The results show that the damage induced by surface irradiation significantly extends to the indirect irradiation region of HEO film where the helium bubbles, dislocations, phase transformation, and the nickel oxide segregation were observed.
Influence of the anisotropy on the magneto-acoustic response of magnetic surface acoustic wave resonators*
Authors: Lu Yawei , Hu Wenbin , Liu Wan , Bai Feiming
Published: March 2020

One-port magnetic surface acoustic wave (MSAW) resonators are fabricated by stacking multilayered (FeCoSiB/SiO2)
n
films directly on top of interdigital electrodes. It is shown that the magneto-acoustic response of the MSAW resonators critically depends the hysteresis of ΔE effect. For the magnetic multilayer without induced magnetic anisotropy, the resonance frequency (f
R) exhibits a butterfly-like dependence on the external field, therefore, enabling bipolar detection of magnetic field smaller than its coercive field. However, for the magnetic multilayers with induced magnetic anisotropy, butterfly-like or loop-like f
R–H curves are measured along the interdigtial electrode fingers or the SAW propagation direction, which can be attributed to the competition between the magnetic field-induced anisotropy and the stress-induced or shape anisotropy.
Design of NO2 photoacoustic sensor with high reflective mirror based on low power blue diode laser*
Authors: Jin Hua-Wei , Xie Pin-Hua , Hu Ren-Zhi , Huang Chong-Chong , Lin Chuan , Wang Feng-Yang
Published: March 2020

An NO2 photoacoustic sensor system with a high reflective mirror based on a low power blue diode laser is developed in this work. The excitation power is enhanced by increasing the number of reflections. Comparing with a traditional photoacoustic system, the pool constant is improved from 300.24 (Pa⋅cm)/W to 1450.64 (Pa⋅cm)/W, and the signal sensitivity of the photoacoustic sensor is increased from 0.016 μV/ppb to 0.2562 μV/ppb. The characteristics of temperature and humidity of the new photoacoustic sensor are also obtained, and the algorithm is adjusted to provide a quantitative response and drift of the resonance frequency. The results of this research provide a new method and concept for further developing the NO2 photoacoustic sensors.
Zero-energy modes in serially coupled double quantum dots*
Authors: Sun Fu-Li , Li Zhen-Hua , Wei Jian-Hua
Published: March 2020

We investigate symmetrically coupled double quantum dots via the hierarchical equations of motion method and propose a novel zero-energy mode (ZEM) at a temperature above the spin singlet–triplet transition temperature. Owing to the resonance of electron quasi-particle and hole quasi-particle, ZEM has a peak at ω = 0 in the spectral density function. We further examine the effect of the magnetic field on the ZEM, where an entanglement of spin and charge has been determined; therefore, the magnetic field can split the ZEM in the spectra.
Approximate solution to the time-dependent Kratzer plus screened Coulomb potential in the Feinberg–Horodecki equation
Authors: Farout Mahmoud , Sever Ramazan , Ikhdair Sameer M.
Published: March 2020

We obtain the quantized momentum eigenvalues Pn
together with space-like coherent eigenstates for the space-like counterpart of the Schrödinger equation, the Feinberg–Horodecki equation, with a combined Kratzer potential plus screened coulomb potential which is constructed by temporal counterpart of the spatial form of these potentials. The present work is illustrated with two special cases of the general form: the time-dependent modified Kratzer potential and the time-dependent screened Coulomb potential.
Characteristics of physico-chemical and functional properties of starch extracts from tubers
Authors: Azima F , Nazir N , Efendi H C
Published: March 2020

This research was aimed to determine the physico-chemical and functional properties of tubers starches and find out a suitable application in food products. Starch from tubers that analyzed were sweet cassava, bitter cassava, white sweet potato, red sweet potato, yellow sweet potato. The results of the physical analysis of Tubers starches were yield (10.86-17.57%), fineness (90.55-92.28%), whiteness (93.82-96.50). The results of chemical analysis of Tubers starches were water (6.51- 8.70%), ash (0.31- 0.43%), fat (0.27-0.37%), protein (0.14-0.16%), starch (82.46-89.05 %), amylose (15.47-17.55%), degree of acid (1.03-1.50 ml NaOH 1N/100g) and residual sulphite (31.44-38.10 ppm). The results of the functional properties analysis of tubers starches were water absorption capacity (0.884-0.951), oil absorption capacity (0.962-1.152), Freeze-Thaw Stability (18.85-40.53%), swelling power at 950C (14, 17-15, 73g/g), solubility at 950C (8, 40 to 17, 16%), the beginning temperature of gelatinization (51-70, 50C), maximum viscosity (475-1733BU), setback (30-487 BU) breakdown (188-850 BU), the stability of pasta (-90- (-390) BU).
Clinical improvement after surgical treatment posterior approaches of cervical schwannoma C5-6 anterior with radiculopathy bilateral: A case report
Authors: Ermawan R , Adriansyah D
Published: March 2020

Schwannoma is a benign, encapsulated, benign tumor that grows slowly from neural fairy cells in the nerve sheath. Extracranial schwannoma is a rare case. These tumors can cause neurological deficits because of their intradural location and suppress the spinal cord so it needs to be decompressed to prevent permanent nerve damage. We reported one case of cervical schwannoma with a neurologic deficit in the form of a numbness in four of limbs since 6 month before admission, we finally performed a laminectomy – posterior durotomy and tumor excision with posterior approach without intraoperative monitoring. The result is a return of neurological function in the patient no complain about pain and patient satisfy with the result.
Response of the growth superior sugarcane clones on soil acidity levels sourced from budchip seeds
Authors: Uchtiawati S , Budi S , Arifani Y , Prihatiningrum A E
Published: March 2020

Low productivity of sugarcane crop effects directly to sugar production. The low sugar production makes price principal sales become high. As a result, farmers income becomes low. One of causing low productivity is the variety of sugarcane crop which is planted has not good quality. One of efforts to increase sugarcane productivity is by producing superior sugarcane variety by doing crossing. This research cooperates with PG Gempol krep produced some sugarcane clones including SB1, SB2, SB3, SB4 and P3. The objective of this research is examining growth response of some sugarcane clones on soil acidity levels sourced from budchips seeds. This research used random complete group design which consist of two factorials and repeated three times. The first factor is sugarcane clones consist of SB1, SB2, SB3, SB4, P3 and BL as the control. The second factor is soil acidity levels consist of soil with pH 4.5, pH 7 and pH 8.2. The growth indicators of plant which observed include plant height, number of leaves, and number of tiller. The result showed that there is significant interaction of treatment sugarcane clones sourced from budchips seeds on variables number of tillers. The treatment of soil acidity levels showed significant interaction on the growth of sugarcane clones sourced from budchips seeds. There is no significant interaction between treatment sugarcane clones and soil acidity levels on sugarcane growth which planted from budchips seeds.
Coffee pulp fermentation techniques for the sustainable organic agriculture
Authors: Sutanto A , Achyani A , Noor R , Subandowo D , Thresia F
Published: March 2020

This paper discusses the potential issues in Lampung province of Sumatera, Indonesia where the majority of the people are to earn a livelihood as a coffee farmer. This place has potential benefits to increase land of coffee farms in order to make greater capacity and economic sector by using an environmentally-friendly technology. To date, the utilization of coffee pulps is only by freely spreading to the coffee farms. In doing so, the technological fermentation by using Indigenous bacteria that has role to produce organic fertilizer of coffee pulps helps gain the soil fertility. This study used descriptive data analysis with community practical approach. The results show that the growth of coffee and other intercropping plants like chili is more fertilized, easy to flower, and it lengthens the shoot growth. In addition, the coffee production seems like changing in the amount of quantity that tends to get better. The significant number also showed by the production of chili because the harvest season is longer than usual. Another advantage by using this fermentation is that the use of non-organic fertilizer can be reduced up to level 80 per cent. Likewise, this condition automatically dropped the production cost.
A novel and innovative drug delivery system in fast dissolving oral film of glimepiride-betacyclodextrin inclusion complexes
Authors: Darusman F , Soewondo B P , Alatas S A M N
Published: March 2020

Delivery system in fast dissolving oral film is the system in which drug can be released immediately without drinking water and can be dissolved in saliva, then absorbed into the body through the oral cavity. Glimepiride is classified in the Biopharmaceutics Classification System class II which has a low solubility in water. Formation of glimepiride inclusion complexes using betacyclodextrin is known to increase solubility while suppressing the bitter taste of glimepiride. The purpose of this study was to develop FDOF preparations containing glimepiridebetacyclodextrin (1:2) inclusion complexes made by co-grinding technique. The development of the FDOF formula begins with the orientation of the formula which varies the concentration of crospovidone as superdisintegrant and PEG 400 as plasticizer. The FDOF were made from two formulas, with one formula containing glimepiride-betacyclodextrin (1:2) inclusion complexes and the other formula containing pure glimepiride as the active ingredient, using the solvent casting method with HPMC E5 LV as the film forming agent. The final evaluations of FDOF include organoleptic, weight variation, film thickness, surface pH, disintegration time, drug content, dissolution rate, percent elongation, tensile strength and folding endurance tests. The best FDOF formula from optimization process contain HPMC E5 LV 35% as film forming agent, PEG 400 15% as plasticizer and 8% crospovidone as superdisintegrant. From the results of final preparation evaluation, FDOF containing glimepiride-betacyclodextrin (1:2) inclusion complexes proved to be better than FDOF containing pure glimepiride.
Mechanical properties of nanogrout as advanced material for construction
Authors: Jonbi J , Tjahjani A R I , Meutia W , Yahya I , Shodik J
Published: March 2020

Recent development in construction industry requires new materials with higher mechanical properties. Therefore, it is necessary to develop grout materials using materials at nano scale. The purpose of this study is to determine the optimal content of nanosilica in grout material. Initial mix was given code G0. Then the nanosilica was added with 1% content (code G1), 2% content (G2), 3% (G3), and finally 5% nanosilica content (G5). Compressive strength tests were carried out when the grout was aged 1, 3, 7, and 28 days. Whereas flexural strength test was carried out at 28 days. The result finding showed that the optimal nanosilica content was at 3% (G3), significantly improved compressive strength 24.6%, tensile strength 20.9% and flexural strength 25.6%. The contribution of this research is to introduce nanogrout as an advanced material, to overcome the challenges of increasingly complex construction work in the future.
Measuring leanness index using fuzzy logic approach
Authors: Dahda S S , Andesta D , Wicaksono A S
Published: March 2020

Continuing competitive advantage will be a goal that will be increased by all types of industry to win the competition. The application of Lean production is a necessity for the industry to be able to increase the competitive advantage. This competitive advantage is achieved by waste elimination and cost reduction programs through the implementation of lean practice. In its implementation, there are many obstacles that occur, including lack of understanding and implementation of lean production that should be carried out. Leanness is a measure of the level of implementation of lean practices. In this paper, the dimensions that are the main areas of concern in lean production implementation are quality, customer, process, human resource and delivery-supplier. By using the advantages of fuzzy logic in performance appraisal and giving qualitative importance to avoid data impreciseness and vagueness. The built-in fuzzy linguistic level is used to identify the position of the industry at the level of application of lean production expressed by Fuzzy Leanness Index. The built model can be used for assessment and identify areas in the industry that have and have not contributed to the implementation of lean production.
Machine learning approach for Acute Respiratory Infections (ISPA) prediction: Case study Indonesia
Authors: R Ginantra N L W S , Indradewi I G A D , Hartono E
Published: March 2020

The progress of human civilization is growing rapidly in all areas of life. Science and technology are hereby inseparable from the life of modern society and capital. Can’t be denied the results of the life of modern society and capital spawned industries that have a big impact to the cause of the Acute Respiratory Infections (ISPA). Acute Respiratory Infections (ISPA) is a disease that attacks the breath through the nose, throat including adnexa network like sinuses with symptoms such as fever, sore throat and cough. In Indonesia ISPA ranks first cause of death in infant group and toddlers with percentages 38, 80% of all toddler mortality. ISPA is a major cause of patient visits in health services, 40-60% visit at community health clinic and 15-30% visit treatment at hospital inpatient or outpatient. In this research, we collect the dataset we get from Community Health Clinic around Denpasar and Tabanan, Bali, Indonesia. The dataset consists of 14 attribute and 150 rows of data. In this study we conducted a study to predict and diagnose disease in a person whether positive suffering from ISPA or negative in accordance with the symptoms caused by using the machine approach. In this research we will make comparisons from some algorithm is KNN, SVM, Naïve Bayes and with Neural Network. The result this research the best performance is SVM with value sensitivity 100%, specificity 100% and accuracy 100%.
Determining cognitive and affective aspects of ablution lessons synchronized with English language learning using total physical response methods as multimedia learning parameters for Islamic kindergarten
Authors: Widiartin T , Azizah S , Karyanto N W
Published: March 2020

Building multimedia learning as a tool in the learning process must also consider the cognitive and affective aspects. Determine cognitive and affective aspects adjusted to the age level of students. Therefore, learning content will have cognitive and affective aspects that are adjusted to the age level of students. In this research will be found cognitive and affective aspects of the learning content that will be loaded into the content of a multimedia learning. The cognitive aspects and affective aspects will be obtained from the results of the synchronization of two lesson content possessed by Islamic Kindergarten schools using the Total Physical Response Method. Based on the cognitive and affective aspects of the learning content obtained, therefore, the result will be used as a reference to determine the multimedia parameters to be built.
Preschoolers’ mental health status based on their mobile gadget usage
Authors: Ayu I M , Titik R , Yuli S
Published: March 2020

Recently, the high number of mobile gadget usage by parents has increased its usage by the children, resulting positive and negative effects. One of the negative effects is mental health problems. Therefore, parents should pay attention to their children’s mobile gadget usage and check their emotional status. This research aims at investigating the relationship between the mobile gadget usage based on American Academy of Pediatrics’ recommendation and children’s mental health status based on the Mental Health Problem Questionnaire (KMEE). This research is an analytic observation research using a cross-sectional approach. The samples of this research were 70 preschoolers taken from three kindergartens in Bandung Wetan sub-district selected using cluster random sampling technique. The research found that 39 preschoolers used gadgets more than one hour a day, and 36 of them had deviant mental health status. The statistical calculations using Chi-Square showed that there was a significant relationship between mobile gadget usage based on the duration of use and mental health status. Children’s mobile gadget usage that did not follow AAP recommendations could give a negative effect on children’s mental health status. Whereas, mobile gadget usage that followed AAP recommendations could improve children’s development of cognition, language, and social skills.
Controlling diet effectiveness through smartphones: An android-based application design
Authors: Trusda S A D , Permatasari I , Yuniarti L , Indrasari E R , Tursina A
Published: March 2020

Obesity has become a global issue, and has almost doubled since 1980. One of the strategies chosen for handling or preventing obesity is by diet. Various types of diets are widely developed in the community, such as the ketogenic, Atkins, and mayo diet. There is no definitive data on what diet protocol is the most effective both in the short and long term. Provide an overview and data about diets that are most effective in losing weight. Analytic observational with cross sectional design. Subjects were the total population of women who took the Atkins, the ketogenic, and the Mayo diet at a diet provider in Bandung during 2017-2018 totalling 59 people. Data was analyzed using ANOVA test. To see the difference of those diets with duration 5 or 13 days, Independent T Test was tested. There were differences in weight loss and BMI in women who underwent the Atkins diet, ketogenic diet, and mayo diet with p=0.008 (p=0.05) for weight loss and p=0.007 (p value<0.05) for reduce BMI. The difference was also found in duration with p<0.001 (p value<0.05) for weight loss and p=0.001 (p value 50.05) for decrease in BMI. In both tests Mayo has the highest decrease in weight and BMI.
Specialized social media platform for integrated thematic based science learning
Authors: Subhan S , Astra I M , Paristiowati M
Published: March 2020

The development of high-order thinking skill of students is one of the keys to success in adapting to changing times and entering the world of technology. This ability should be developed since students in elementary school. The research aims to improve students’ high order thinking skills through integrative thematic-based science learning with scientific approaches. The research was conducted at one of the elementary schools in Ambon, East Indonesia used the quasi-experimental method with pre-post-equivalent control group designs. Data collection techniques are carried out through high-order thinking tests with indicators determining aspects, making decisions, making ideas, reasoning, and communicating. Furthermore, the data were analyzed using an independent sample t-test with a significance level of 0.05. The results showed that the average N-gain value of the experimental group was 0.7427 higher than the control group 0.4338. So it can be concluded that thematic integrative science-based learning with a scientific approach can improve students’ high order thinking skills in elementary schools.
Critical reading skill and discovery learning method at elementary schools based on an Android-application: A computerization approach
Authors: Elhefni E , Zulela Z , Sumantri S
Published: March 2020

This study discusses the implementation of the method of discovery learning in critical reading learning in Indonesian language lessons in elementary schools. This study aims to determine the improvement of critical reading skills of fifth-grade students of elementary school through discovery learning methods and to find out the implementation of discovery learning methods in improving critical reading skills of fifth-grade students in elementary school. The method used in this study is the Elliott model action research method. The action research was carried out on 32 fifth graders at one of the Islamic private elementary schools in Palembang, Indonesia. Based on the results of the study, it can be concluded that the use of discovery learning methods in critical reading learning can improve students’ skills in critical reading. Thus the results of this study can be recommended to elementary school educators to use this discovery learning method in critical reading learning in Indonesian language lessons in elementary school. In addition, the discovery learning guide can also be used to facilitate the learning process.
Validity and reliability level of an application measuring school principle’s decision making
Authors: Setiawan I , Djaali D , karnati N , Laratmase A J , Cletus S , Nugraha A B , Sulaiman S
Published: March 2020

The objective of the research is to obtain information about the effect of authority and decision making on managerial effectiveness on principal of state primary school. The research was conducted to all of state primary school principal at The City of north Jakarta by using a survey method with path analysis applied in testing hypothesis. The number 80principal as sample was selected by using Slovin formula. The research concludes: (1). there is direct effect of authority on managerial effectiveness. (2). there is direct effect of decision making on managerial effectiveness. (3). there is direct effect of authority on decision making. Therefore to enhance principal’s managerial effectiveness can be carried out by authority, and decision making.
ICT-based talent scouting in the 21st century
Authors: Legowo M A P , Suyanto S
Published: March 2020

This article is based on research data in elementary schools (SD). This research is focused on a program called Talent Optimizing Program which is intended for students with special needs at Budi Mulia Dua Elementary School Yogyakarta. This school is one of the formal educational institutions with inclusion program facilities. This school implements inclusive education where education for normal children and children with special needs is held simultaneously regardless of their condition. Qualitative approach is used in this study by collecting data through in-depth interviews, participant observation, and documentation. Informants choosing is done with snowball technique. For checking data credibility, it is done by using triangulation technique. The results of the study show that this school believes each individual is unique, hence respect and tolerance for differences must be made. These are the learning bases available at Budi Mulia Dua Elementary School Yogyakarta. This school provides services for students with special needs through adaptation of school curriculum, learning, assessment, and infrastructure. This school is a means for students with special needs to develop their talents and interests. Educators and education staffs in this school strive for making innovation continuously so students with special needs can take part in learning activities by adjusting to their conditions, developing their talents and interests through Talent Optimizing Programs.
Digital measurement of student learning style: Using smartphones for self-evaluation
Authors: Hadi D L P , Usodo B , Slamet I
Published: March 2020

Students had different characteristics of learning styles, differences from these characteristics can affect learning achievement, confidence, communication, and other activities. This study aims to analyze student learning achievement with all three learning styles. The method in this study is a quantitative method and continued with analysis. The data of this study were obtained from all junior high school students at Karanganyar, Indonesia, district and used multiple choice question test instruments and questionnaires. The results of this study indicated that student learning achievements have differences from learning styles. To improve learning achievement, in mathematics learning students are trained to work on math problems and the teacher expected to know student learning styles so that the teacher can provide appropriate to handle students at Karanganyar Regency.
Understanding natural coloring substances using a web-based application
Authors: Chairunnisa R , Wahyu W , Sopandi W
Published: March 2020

This study describes chemical learning in junior high school through Project Based Learning (PjBL). Learning through Project Based Learning (PjBL) can help students reduce learning difficulties, both in academic performance, motivation (self-efficacy and task value in terms of environmental studies) and group work (acceptance in groups and involvement in the learning process). In order to be able to attend learning well, students must have cognitive abilities, because it is one aspect of child development that must be stimulated by their abilities early. Therefore, this study aims to develop students’ cognitive abilities through the design of Project Based Learning (PjBL) on the topic of natural dyes. The researcher used the Greivemeijer & Cobb Design-Based Research (DBR) research method consisting of 3 phases namely Preliminary Design, Design Experiment and Retrospective Analysis. Participants in this study were 25 class VIII students, science teachers and 3 observers who understood the PjBL design. Based on the results of the study, the PjBL design can improve students’ cognitive abilities. Understanding (C2) obtaining an average of 59.59% (sufficient category), applying (C3) obtained an average of 66.66% (good category), analysed (C4) obtained an average of 58.58% (sufficient category). The highest cognitive ability of students is in the ability to remember, while the lowest is in the ability to analyse.
Digital repository of Chinese temple and sea guardian deity tradition
Authors: Hartati C D , Chandra Y N , Wijayanti G , Yuniar E , Afiyati A
Published: March 2020

Respect for the sea is a form of local wisdom of Indonesian people who are maritime countries. Many ethnic groups in Indonesia see the sea as something sacred apart from the profane. Traditions and rituals related to the sea are a sign of respect for the sea. Likewise, in Chinese society in Indonesia, respect for the sea appears with the existence of temples located on the coast. Globalization is characterized by the loss of local wisdom and sacred traditions, but here can be seen the persistence of local wisdom traditions in viewing the sacred. The study was conducted using ethnographic research methods, which were carried out in several temples that had sea guardian deities as host gods, such as in Makassar, Jakarta, Karawang, and Madiun. This research will discuss the rituals intended to honour Mazupo as a sea guardian deity as a form of local wisdom in maritime society. Those rituals are local wisdom because the form of worship is a life value system inherited from one generation to the next in the form of religion, culture or customs which are generally in oral form in a society’s social system and become sacred.
ICT-based of investment decision and method evaluation in hospitality sector
Authors: Syamsiyah N , Novianti E , Susilawati E A , Astuty E Y , Sesunan M F
Published: March 2020

This study aims to determine the feasibility of IT investment in hospitality and determine the value and tangible/intangible benefits from IT implementation. Problem arises from high investment without knowing the real impact and future investment to IT development. The scope of this research is information technology investment in 5-star hotel in Jakarta. The data were collected by distributing questionnaires to the research samples, are Grand Hyatt Hotel, Mandarin Oriental Hotel and Ayana Midplaza Hotel Jakarta. The analysis uses Cost Benefit Analysis that combines financially and non-financial calculations to determine the feasibility of IT investment and the benefits of IT for 5-star hotels in Jakarta. From the analysis result, it can be concluded that 5-star hotel in Jakarta is feasible to make IT investment according to NPV, ROI, and Payback period calculation and IT investment in 5-star hotel is quite beneficial for hotel business process.
Optical properties of oil palm Fresh Fruits Bunch (FFB) for optimum harvest-window prediction
Authors: Cherie D , Rini R , Makky M
Published: March 2020

Oil palm is among the strategic commodity of Indonesian agroindustry. The oil produced from the fresh fruits bunch through several steps of extraction process. The oil palm industry contributes to the advancement of country’s economy, development and human resource. It provides job for more than 50 million Indonesian, directly or through secondary activities. Today, the industry needs to improved its efficiency, to address market competition and global demand. In the upstream region, oil palm plantation still practices outdated method, particularly harvest. Improper harvest decision contributes to national production loss of 15%. This study aimed to identify the optimum time for harvesting the oil palm FFB. When harvested on prime and optimum ripe, the FFB can yield 25-28% of oil extraction rate (OER), much higher than the current 18-20% nation-wide OER. While the FFB is commonly harvest according to its physical properties (fruits’ colour and the number of loose fruits), the visual based observation is subjective and prone to influence by the mental state of the labour. Here, device which can identify the FFB true ripeness is needed to perform proper harvest when the FFB truly obtained its optimum ripe. Our previous studies suggest that, upon grading, the FFB quality can be identified by its optical properties. The same approach opens the possibility to be used when evaluating the FFB for harvest. In this study, the FFB colour model was established to identify the optimum harvest window of FFB under observation.
An environmentally-friendly perlecan protein expression
Authors: Njoto I , Soekanto A , Ernawati S , Kalim H , Handono K , Soeatmadji D W , Abdurrachman A , Fatchiyah F
Published: March 2020

The risk of high sugar level exposure can affect almost all parts of the body, organ systems, tissues, to the cellular level. The exposure to high sugar level caused disturbances in the joints in the form of changes in the microcellular environment. It will cause negative impact to microcellular component of articular cartilage, which increased the risk of joint degradation. Present study was to investigate excess carbohydrate diets on perlecan protein expression and Transforming Growth Factor alpha (TGF-ᾳ) in articular cartilage which still unclear, which perlecan function to chondrocytes articular cartilage was to support regeneration of articular cartilage by increasing the secretion of anabolic factors by chondrocytes, so the progressivity of articular cartilage damage decreased and the risk of osteoarthritis disease can be lowered too. Function of TGF-ᾳ expression was opposite to perlecan protein expression. Methods: six groups of eighteen adult’s male rats were divided into: control (K0), lower diet 1 (A), lower diet 2 (B), middle diet (C), over diet 1 (D), over diet 2 (E). Control group were not performed Anterior Cruciate Ligament Transection (ACLT), but others group were performed ACLT to develop osteoarthritis condition for two months’ maintenance. Perlecan protein expression, and expression of TGF-ᾳ were analyzed using Western Blotting method. Perlecan protein expression was fluctuate stable at group (a) < (b) compare to control group (K0), but decreasing at group (e) < (d) < (c) compare to control group, which opposite to increasing carbohydrate intake dose. TGF-ᾳ as catabolic factor was fluctuate increasing at group D > group C > E compare to control group, but slightly stable at group A and B. Interaction of perlecan and TGF-ᾳ as one of others factor which determine cartilage health under hyperglycemia condition. Results and discussion: This aim as early research as a based to next research for accomplish of pathogenesis of osteoarthritis caused by hyperglycemia. Present study concludes that hyperglycemia was influence to cartilage health due to changing of perlecan protein expression and TGF-ᾳ expression.
Risk factors of leprosy and how its treatment it environmentally-friendly
Authors: Masrizal M , P R Ananda , Ilham R
Published: March 2020

Leprosy is a contagious disease of chronic infection of the skin caused by Mycobacterium leprae which causes complex problems. Based on West Sumatera Provincial Health Office data, Padang Pariaman Regency is the biggest contributor of leprosy in West Sumatera, i.e. 4.2% in 2015 and 8, 3% in 2016. This study aims to determine the risk factors for leprosy in Padang Pariaman District. Method: case-control study is conducted in 32 leprosy patients and 32 controls are selected based on matching the age and gender adjusted to the cases. Using non probability sampling method with total sampling technique. Data are analysed using Univariate, Bivariate (Mac Nemar), Multivariate (Logistic). Results: The result of bivariate showed that there is a significant relationship between history contact OR=5,6 (95%CI 1,6-19,3), knowledge level OR=9, 0(95%CI 2.0-38,7), personal hygiene OR = 7.0(95%CI 1.5-30.8) and occupancy density OR = 13.0(95%CI 1.7-99.3) with the incidence of leprosy. The result of multivariate analysis shows that the knowledge level is the most dominant factor contributing to the incidence of leprosy. Conclusion: The dominant risk factors that contribute to the incidence of leprosy in Padang Pariaman District is the level of knowledge. It is suggested that health workers should increase the extension of personal hygiene and education about leprosy to the community, how to spread and prevention to the community gradually and sustainably in Health Centre of Padang City.
Exploring the type of ferns (pteridophyta) to realize the Wonorejo Surabaya mangrove forest ecology balance
Authors: Ngadiani N , Restia A S D
Published: March 2020

Mangrove forests are the habitat of various organisms, including Ferns plants. Ferns plants as plant communities in biodiversity have important ecological functions in the mangrove forest ecosystem. The objectives of the study were (1) to know the index of the diversity of Ferns plants (pteridophyta), (2) to determine the type of Ferns plant found in the mangrove forest of Wonorejo Surabaya, (3) to know the environmental parakeet of mangrove forest of Wonorejo Surabaya as the place of life of Ferns plant (pteridophyta). The research was conducted from March 2018 - June 2018 in Wonorejo mangrove Surabaya. This type of research is descriptive skin to obtain information about the diversity of Ferns plant species in terms of sporangium type, habitat and environmental factors that may affect. Samples were obtained from 5x5m plot of land at 5 research stations. The method used in this study is the method cruse with direct observation and explore each point of the location that can represent the types of ecosystems or vegetation in the area under study. The result shows that the diversity of Ferns plant species in the mangrove forest of Wonorejo Surabaya is said to be low in terms of diversity index because there are only 3 types of Ferns plants that consist of pteridaceae family, with Acrostichum aerum species, Acrostichum speciosum and Pytirogramma calomelanos. This is due to environmental factors that are less suitable as a place of life of Ferns plants such as habitat, temperature, humidity, light intensity and wind speed. The benefit of this research is to go to the ecosystem that is suitable with Ferns plant by adding the habitat for Ferns plant to live.
Levels of Cuprum (Cu) and Plumbum (Pb) in Shrimp in the traditional market and their impacts towards the environmental health
Authors: Asih A Y P
Published: March 2020

Absorption of heavy metals by the main shrimp Cuprum (Cu) and Plumbum (Pb) will be accumulated in the body and cannot be biodegradable and accumulated in living tissue. Cuprum and plumbum in small amounts are needed in the body’s metabolic process but exposure in excess amounts is toxic, so that at a certain level it can increase the risk of death. Heavy metal pollution often comes from human activities, namely industrial waste disposal, domestic waste or pesticide use in agricultural cultivation, plantations, as well as fisheries businesses, especially shrimp farming. This study aims to identify the magnitude of the average levels of cuprum (Cu) and plumbum (Pb) heavy metals in various types of shrimp available in traditional markets, by comparing the average levels of cuprum (Cu) and plumbum (Pb) of various types of shrimp, observation as well done by comparing the physical size of shrimp based on the type of shrimp. and determination of cuprum (Cu) and plumbum (Pb) levels was carried out by atomic absorption spectrometry. The results of research on shrimp sold in the traditional market of Surabaya, showed that the smaller the physical shrimp, the higher levels of cuprum (Cu) and plumbum (PB) will be higher. The highest Cuprum (Cu) and Plumbum (Pb) levels were found in Vannamei (Litopenaeus vannamei) shrimp, Cuprum (Cu) levels of 8,811 mgCu / kg, and Plumbum (Pb) of 1,990 mgPb / kg, on Windu shrimp (Panaeus monodon) Cuprum (Cu) levels of 7,886 mgCu / kg, and Plumbum (Pb) of 0.735 mgPb / kg, whereas for giant prawns (Macrobrachium rosenbergii de Mann) showed levels of Cuprum (Cu) of 5,814 mgCu / kg and Plumbum (Pb) of 0.728 mgPb / kg; this average level is higher than the WHO standard of 0.691 mgCu / kg for Cu, and 0.715 mgPb / kg for Pb.
Effects of paternal exposure to tertiary cigarette smoke on fetal morphometry and cognition of the offspring and its impact towards pollution
Authors: Furqaani A R , Siswanti L H , Sari A K , Oktaviana W , Febriyanty N , Putri S A
Published: March 2020

The aim of this study was to determine the effect of paternal exposure to tertiary cigarette smoke on fetal morphometry and cognition of the offspring. This research is an experimental study with a complete randomized design. Twenty adult male mice used and randomly divided into control group and treated group which exposed to tertiary cigarette smoke for 14 days. After the smoking period, each male mated with two adult female mice. One group of female mice sacrificed and dissected to isolate the fetus on the 18th day of gestational. Fetal morphometry observed immediately. Another group of female mice allowed to give birth naturally. Then on the 30th day, novel object recognition (NOR) test performed to assess the cognitive function of the offspring. The results showed that the weight and length of the fetus from the treated group significantly smaller than that of the control group. Furthermore, offspring of the control group showed better performance significantly during NOR test. These results indicated that paternal exposure to cigarette residues affect the fetal development so that the fetus has smaller size and worse offspring cognition.
Study of mercury contamination in the environment as an impact of Artisanal gold mines activities at North Halmahera Indonesia
Authors: Chamid C , Sulistijo B , Hindersah H , Asyiawati Y
Published: March 2020

North Halmahera is part of Halmahera Island in East Indonesia which has natural resources that can be used for capital development of the island, such is gold deposit. An environmental destruction has occurred in surrounding areas of artisanal gold mines, one of them is mercury contamination. This is a descriptive analysis study in order to find out has mercury contamination occurred in the study area. The study was conducted by measuring mercury concentration directly in the atmosphere and soil by using mercury vapor analyzer, and collected river and marine water which analyzed in laboratory. The average measured mercury vapor in the atmosphere was 2.071, 8 mg/L, and in soil was 12, 568.4 mg/L, while the EPA threshold limit of mercury vapor concentration is 300 mg/L. All mercury concentration in river water were lower than 0.009 mg/L below the threshold limit of Water Quality Class II PPRI No.82/2001 which is 0.002 mg/L. The measurements were also below the threshold limit for water marine of KepMen LH No 51/2004 of 0.001 mg/L. It is find out that mercury vapor has contaminated the atmosphere of the study area of Malifut and Kao Teluk sub districts.
Sensory evaluation of sorghum cakes: Substituting sorghum flour for rice flour, sticky rice flour and wheat flour
Authors: Noerhartati E , Hernanda P Y , Mujianto M , Simamora D , Widiartin T , Maslihah M , Karyanto N W
Published: March 2020

The research objective was the development of the potential of sorghum as an alternative food source to support the Diversification and Food Security Program, by developing various wet cake products, the substitution results of sorghum flour with various other flour, namely: rice flour, sticky rice flour and wheat flour. Specific target: get sorghum-based cakes and various formulations and products that can be accepted by consumers, including quality in terms of physical aspects and organoleptic aspects. The results of these studies are useful for the formulation of the next phase of technical studies, namely obtaining appropriate technology that can be applied to the community. The selected treatment was sorghum “nogosari” cake with S1B1 treatment (combination of sorghum flour 30% and rice flour 70%), sorghum “mendut” cake with S1K1 treatment (combination of sorghum flour 30% and sticky rice flour 70%), while sorghum “bolu” cake with S1T2 treatment (combination of sorghum flour 40% and wheat flour 60%).
Misconceptions in mathematical induction for eleventh-grade students – HOTS categorized items
Authors: Adinata Y C , Budiyono B , Indriati D
Published: March 2020

This study aims to analyse misconceptions made by students regarding mathematical induction. The technic to collection data uses principles in ethnography such as observation, interview, documentation, and field note. Data were collected through student answer documentation based on 40 multiple choice questions with reasons. There are four misconceptions in solving problems related to mathematics induction subject matter. First is a misconception in interpreting the (n) on proof of P(n). Second is a misconception in generalizations (deduction). The third is a misconception in evidentiary procedures. Fourth is a misconception in manipulating or operating. The results of the findings of the misconceptions are used as material for consideration to improve items. Results construction of instruments to measure higher order thinking skills obtained 40 items that have been corrected based on criteria substance, construction, and language for further validation by experts before being tested in three schools.
Student perspective on fairness of assessment in mathematics classroom
Authors: Nurhayati S , Herman T
Published: March 2020

An appropriate assessment that can show specifically the ability of students is something that is expected can be felt by students. Therefore there must be a fair assessment in an authentic assessment conducted on students. We report the results of case studies on student perspectives related to seven themes of fairness assessment that aim to investigate students’ perspectives on the assessment of fairness in mathematics classes. We developed 20 questions related to fairness theme indicators and were given to five 11th grade high school students (15-17 years) from one of the referral schools in suburban areas in West Java. The results of this study illustrate that not all indicators of fairness are felt by students and the acquisition of student values influences their sense of fairness. This shows that the fairness of assessments in math classes is still lacking even in schools with referral school categories (implement authentic assessments).
Analysis of the ability of mathematical connections of middle school students in the field of algebra
Authors: Sari D N O , Mardiyana M , Pramudya I
Published: March 2020

The world of education continues to innovate in various fields, including renewal in its implementation strategies. Mathematical connection ability is one of the important abilities possessed by students. Mathematical connections aim to link mathematical problems into mathematical ideas they have. If students can use mathematical connections, learning will be optimal and meaningful. This study aims to describe students’ mathematical connection skills in solving the problem of mathematical connections in the algebraic field. This research uses descriptive qualitative research with the subject of the research is class VIII in Surakarta Batik Middle School, amounting to 57 students. Data collection is done by giving a test in the form of a more in-depth essay on mathematical connection skills in the algebraic field. The variables in this study are indicators of mathematical connection ability, namely the connection between mathematical concepts, connections between mathematics and other sciences, and connections between mathematics and everyday life. In this study, students’ mathematical connection ability tests were still low. Can be seen from the percentage of each indicator, namely the indicator of the connection between mathematical concepts is 38%, the connection between mathematics and other sciences is 29%, and the connection between mathematics and everyday life is 43%. Students are lowest in connecting mathematics with other sciences.
The effect of cooperative learning Type Teams-Games-Tournaments (TGT) on mathematical connection and communication ability in elementary schools
Authors: Muslim A
Published: March 2020

This study aims to analyze the effect of increasing the ability of connection and mathematical communication of students through TGT cooperative learning. This study uses a quasi-experimental method. The sample of the study is the fourth-grade students of students of one of the state elementary schools in Bandung with 52 students. The instruments are data collection, namely test instruments, mathematical connection, and communication skills. Through the t-test, Mann-Whitney, and two-way ANOVA, conclusions were obtained, 1) there was a significant difference in the increase in connection skills and mathematical communication of students who received TGT type cooperative learning with students who received classical learning, 2) there was no interaction effect significant between learning and mathematical initial ability to increase students’ connection and mathematical communication skill. So this study proves that TGT cooperative learning can be used as an increase in the results of mathematical learning in elementary schools.